CN101443613A - Freezing device - Google Patents
Freezing device Download PDFInfo
- Publication number
- CN101443613A CN101443613A CNA2007800176401A CN200780017640A CN101443613A CN 101443613 A CN101443613 A CN 101443613A CN A2007800176401 A CNA2007800176401 A CN A2007800176401A CN 200780017640 A CN200780017640 A CN 200780017640A CN 101443613 A CN101443613 A CN 101443613A
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- CN
- China
- Prior art keywords
- thermal insulating
- refrigerating plant
- compressor
- heat exchanger
- insulating box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008014 freezing Effects 0.000 title abstract 3
- 238000007710 freezing Methods 0.000 title abstract 3
- 239000003507 refrigerant Substances 0.000 claims abstract description 107
- 238000004891 communication Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 abstract description 31
- 230000008020 evaporation Effects 0.000 abstract description 28
- 238000009413 insulation Methods 0.000 abstract description 10
- 238000003860 storage Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000009835 boiling Methods 0.000 description 22
- 239000007788 liquid Substances 0.000 description 19
- 239000000203 mixture Substances 0.000 description 19
- 239000003921 oil Substances 0.000 description 18
- 239000011810 insulating material Substances 0.000 description 16
- 239000012071 phase Substances 0.000 description 16
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 15
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 description 15
- 239000007789 gas Substances 0.000 description 14
- 238000009833 condensation Methods 0.000 description 11
- 230000005494 condensation Effects 0.000 description 11
- 238000001816 cooling Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000011491 glass wool Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000012808 vapor phase Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical group FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- WMIYKQLTONQJES-UHFFFAOYSA-N hexafluoroethane Chemical compound FC(F)(F)C(F)(F)F WMIYKQLTONQJES-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- DBSMLQTUDJVICQ-CJODITQLSA-N onametostat Chemical group NC1=C2C=CN([C@@H]3C[C@H](CCC4=CC=C5C=C(Br)C(N)=NC5=C4)[C@@H](O)[C@H]3O)C2=NC=N1 DBSMLQTUDJVICQ-CJODITQLSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000005945 translocation Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
- F25D19/02—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors plug-in type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
- F25D23/065—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/14—Insulation with respect to heat using subatmospheric pressure
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Refrigerator Housings (AREA)
Abstract
A freezing device where the temperature etc. in a storage room can be measured by using a measurement hole without affecting an installation environment. The freezing device (1) has a low temperature side refrigerant circuit (38) constructed from a compressor (20), an evaporation pipe (62), etc. and cools the storage room (4), formed in an heat insulation box body (2) by using the evaporation pipe (62), down to extreme cold temperature. A machine room (3) is provided beside the heat insulation box body (2) and has the compressor (20) etc. installed in it. The measurement hole (19) communicating with the inside of the storage room (4) is formed in the side wall on the machine room (3) side of the heat insulation box body (2).
Description
Technical field
The present invention relates to a kind of refrigerating plant, it possesses the refrigerant loop that is made of compressor and rapid steamer etc., and the storeroom that will be formed in the body of thermal insulating box by evaporimeter is cooled to ultralow temperature.
Background technology
In the past, with the storehouse inner sustain is that the refrigerating plant of ultralow temperature constitutes body by body of thermal insulating box, this body of thermal insulating box constitutes by filling with foam insulation materials in the space that interior case and outer container are constituted, in the storeroom in being formed at this body of thermal insulating box, the ultralow temperature space (with reference to patent documentation 1) below for example the refrigerating plant by the binary refrigeration mode for example-80 forms ℃.
Usually,-80 ℃ of refrigerating plants with inferior ultralow temperature will be maintained in the storeroom, by top body of thermal insulating box with opening and with the mode that opens and closes freely inaccessible should above the adiabatic cabinet door of opening constitute, be formed with the Machine Room of the cooling device that sets the binary refrigeration mode in the side direction of body of thermal insulating box.For in the case in seeking to reduce cold and hot (
) leakage rate, consider temperature difference outside and that interior case is interior, body of thermal insulating box is filled the heat-insulating material of suitable thickness between interior case and outer container.
On the other hand, this refrigerating plant is used for the preservation etc. of the biological cell of physical and chemical experiment chamber etc., needs sometimes the actual storage humidity that is accommodated in the sample in the storeroom is carried out micrometric measurement and record.In this case, not the temperature sensor that the control temperature of being located at refrigerating plant is used to be arranged at sample in the storeroom etc., be arranged at the interior sample of storeroom etc. but need to be used in particular for measuring the temperature sensor of preserving indoor actual temperature, and need be used to import the mensuration hole of this temperature sensor.
Figure 10 represents the stereogram of refrigerating plant 100 in the past.This refrigerating plant 100 is had opening and is formed the body of thermal insulating box 101 of storeroom in inside and the Machine Room 102 that forms in abutting connection with the side direction of this body of thermal insulating box 101 constitutes by top, the top opening of body of thermal insulating box 101 in open mode freely by adiabatic cabinet door 103 obturations.And,, form and measure hole 105 at the side 101A that is positioned at an opposite side this body of thermal insulating box 101, that be formed with Machine Room 102 sides.
This is measured hole 105 and temperature sensor can be inserted in the storeroom from the outside, and the distribution of drawing from temperature sensor is connected in outside tape deck body via this mensuration hole 105.And the bolt 106 that the gap between this mensuration hole 105 and the distribution is made of deformable spongy special material stops up.In addition, under not temperature sensor mounted state, utilize this bolt 106, measure hole 105 and stopped up adiabaticly.
Patent documentation 1:(Japan) spy opens clear 62-73046 communique
At this, because this refrigerating plant is in physics and chemistry laboratory etc., most cases lower edge wall or other equipment and be provided with, when the back side at this storage forms the mensuration hole, because of recording temperature sensor is difficult to plug, so this mensuration hole multiform is formed in the side that is positioned at opposite side body of thermal insulating box, that be formed with the Machine Room side.
Yet, in the above-described configuration, when this refrigerating plant is set, if not according to given size with body of thermal insulating box, be formed with wall or other equipment of side from the laboratory etc. of measuring the hole side and leave configuration, exist to be difficult to use the problem in this mensuration hole.
On the other hand, for as above-mentioned with the storeroom inner sustain for the regulation ultralow temperature, this refrigerating plant need use the body of thermal insulating box of the heat-insulating material of having filled specific thickness.Therefore, with respect to the volume in the storeroom, overall dimensions maximizes.And, in order to use the said determination hole, must refrigerating plant be set in the mode that the wall from the laboratory etc. or other equipment leave given size, therefore there is the problem that the required enlarged areas of this refrigerating plant is set.
Summary of the invention
Therefore, the present invention makes for the technical problem that solves in the past, and its purpose is to provide a kind of can the use to measure that the hole is measured the temperature in the storeroom etc. and refrigerating plant that the influence of environment is not set.
The refrigerating plant of first aspect present invention possesses the refrigerant loop that is made of compressor and evaporimeter etc., the storeroom that utilizes evaporimeter to constitute in body of thermal insulating box is cooled to ultralow temperature, it is characterized in that, also possesses the Machine Room that is configured in the body of thermal insulating box side direction and is provided with compressor etc., at the sidewall of the Machine Room of body of thermal insulating box side, constitute mensuration hole with the storeroom internal communication.
The refrigerating plant of second aspect, on the basis of foregoing invention, it is characterized in that body of thermal insulating box is formed by the composite construction of vacuum heat-insulating plate and foamed thermal insulating, the front and rear wall that vacuum heat-insulating plate is disposed at body of thermal insulating box reaches in the sidewall of a side opposite with the Machine Room.
The refrigerating plant of the third aspect on the basis of above-mentioned each invention, is characterized in that, is provided with in the Machine Room to cover the panel that can open and close of measuring the hole.
The refrigerating plant of fourth aspect on basis of above-mentioned each invention, is characterized in that, constitutes the top panel of Machine Room in the mode that can open and close, and is opening under the state of this top panel, can operate measuring the hole.
According to the present invention, refrigerating plant possesses the refrigerant loop that is made of compressor and evaporimeter etc., the storeroom that utilizes evaporimeter to constitute in body of thermal insulating box is cooled to ultralow temperature, wherein, also possesses the Machine Room that is configured in the body of thermal insulating box side direction and is provided with compressor etc., sidewall in the Machine Room of body of thermal insulating box side, constitute mensuration hole with the storeroom internal communication, thus, measure the hole by inserting with temperature sensor as the described record of sensing equipment, can easily sensing equipment be disposed in the storeroom from the Machine Room side.
Thus, even if with this refrigerating plant with the wall of environment or other equipment are set under situation about being provided with, particularly measure the hole in order to use, also there is no need necessary gap is set, can realize being used to be provided with narrow and smallization of the needed area of refrigerating plant.Be preferred aspect the layout of the chamber that experimentizes etc.
Invention according to second aspect, on the basis of foregoing invention, body of thermal insulating box is formed by the composite construction of vacuum heat-insulating plate and foamed thermal insulating, the front and rear wall that vacuum heat-insulating plate is disposed at body of thermal insulating box reaches in the sidewall of a side opposite with the Machine Room, thus, vacuum heat-insulating plate can be equipped on body of thermal insulating box and be formed at the influence of the mensuration hole site of body of thermal insulating box, can reduce the leak volume of the cold-producing medium in the storeroom, can suppress the unnecessary waste of cooling energy.
Particularly, by in the sidewall of the front and rear wall of the body of thermal insulating box that constitutes towards the outside and a side opposite, disposing vacuum heat-insulating plate with the Machine Room, even if storeroom inside is for example reached under the situation of the ultralow temperature below-150 ℃, also can improve the heat-insulating property of body of thermal insulating box self, can realize dwindling of size, even if identical, also can seek to enlarge the volume of taking in the storeroom with appearance and size in the past.Perhaps, though with in the past to take in volume identical, also can dwindle appearance and size, thus, also can realize being used to be provided with narrow and smallization of the needed area of refrigerating plant.
In addition,, on the basis of above-mentioned each invention, be provided with the panel that can open and close that covers the mensuration hole, see, measure the structure that does not expose in the hole, can improve visual aesthetics thereby can form in appearance in the Machine Room according to the invention of the third aspect.
According to the invention of fourth aspect, on the basis of foregoing invention, constitute the top panel of Machine Room in the mode that can open and close, opening under the state of this top panel, can operate measuring the hole, thus, the operation of measuring the hole is become easily, can seek to improve operation.In addition, the operation of other mechanical indoor equipmenies is also become easily, can seek the raising of upkeep operation.
Description of drawings
Fig. 1 is the stereogram that is suitable for refrigerating plant of the present invention;
Fig. 2 is the front view of the refrigerating plant of Fig. 1;
Fig. 3 is the plane of the refrigerating plant of Fig. 1;
Fig. 4 is the side view of the state in the storeroom of refrigerating plant of perspective view 1;
Fig. 5 is a stereogram of opening the refrigerating plant of the state behind the top panel;
Fig. 6 is the refrigerant loop figure of the refrigerating plant of Fig. 1;
Fig. 7 is the stereogram of adiabatic tectosome;
Fig. 8 is the stereogram of state of removing the heat-insulating material of adiabatic tectosome;
Fig. 9 is the rear perspective view that the refrigerating plant of adiabatic tectosome state is installed in expression;
Figure 10 is the stereogram of refrigerating plant in the past.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described in detail.Fig. 1 is the stereogram that is suitable for refrigerating plant 1 of the present invention, Fig. 2 is the front view of refrigerating plant 1, Fig. 3 is the plane of refrigerating plant 1, and Fig. 4 is the side view of the state in the storeroom 4 of perspective refrigerating plant 1, and Fig. 5 is a stereogram of opening the refrigerating plant 1 of the state behind the top panel 5.The refrigerating plant 1 of present embodiment is the refrigerating plant that is applicable to that the ultralow temperature that for example carries out bio-tissue that long-term low temperature preserves or detected material etc. is preserved, and its body is made of the body of thermal insulating box 2 of top opening and the side direction and the inner Machine Room 3 that is provided with compressor 10 etc. that are positioned at this body of thermal insulating box 2.
This body of thermal insulating box 2 is by constituting as lower member: the outer container 6 of top unlimited steel plate system; The interior case 7 that opens wide above and make by the good metals such as aluminium of heat conductivity; (Block レ-カ) 8 to connect plastic separator between the upper end of these two casings 6,7; Fill the heat-insulating material 9 of the polyurethane resin system of the interior volume that surrounds by these outer containers 6, interior case 7 and separator 8 in the foam-in-place mode; With the storeroom 4 of interior case 7 inside as top opening.
In the present embodiment, for example become below-150 ℃ in order to make as the temperature in the storeroom 4 of target (below be called storehouse temperature), separate in the storeroom 4 and the body of thermal insulating box 2 of extraneous gas, compare storehouse temperature is set near 0 ℃ low temperature, need stronger heat insulation capacity.Therefore,, must form very thick thickness, limited body dimension be sayed the problem of the amount of taking in the storeroom 4 can not be fully guaranteed in existence for the heat-insulating material 9 that only utilizes aforesaid polyurethane resin system is guaranteed this heat insulation capacity.
Therefore, body of thermal insulating box 2 in the present embodiment is configured in antetheca 6A, the rear wall 6B of outer container 6 with the vacuum heat-insulating plate 12 of glass wool system and is positioned on each internal face of sidewall 6C of a side opposite with a side that is provided with Machine Room 3, in case after using two-sided tape temporarily fixing, heat-insulating material 9 is filled between these two casings 6,7 in the foam-in-place mode.
This vacuum heat-insulating plate 12 is taken in the glass wool with thermal insulation in the container that the plural layers that formed by aluminium that does not have aeration or synthetic resin etc. constitute.Thereafter, utilize the air in the specified vacuum exhaust gear amount discharge container, the peristome that engages this container by fusion gummed mode constitutes.Therefore, this vacuum heat-insulating plate 12 utilizes its heat-insulating property, the gauge of heat-insulating material 9 can be made as thinlyyer than existing heat-insulating material, and can obtain identical insulation effect.
On the other hand, on the side face of heat-insulating material 9 sides of interior case 7, the evaporimeter (evaporation tube) 62 of details with the refrigerant loop of formation cooling device R described later is installed in the mode of carrying out heat exchange each other.
As mentioned above the separator 8 of the body of thermal insulating box 2 of Gou Chenging above, as Fig. 2 or shown in Figure 4, be configured as step-like, at this via not shown filler (パ Star キ Application), adiabatic cabinet door 13 to be being the center with the rear end in an end, the present embodiment, props up parts 14,14 by pivot and rotates freely and be provided with.The top opening of this storeroom 4 opens and closes and is provided with the inner cap 15 that is made of heat-insulating material freely.In addition, be formed with the outstanding press section that constitutes downwards below adiabatic cabinet door 13, thus, inner cap 15 is pushed in the press section of adiabatic cabinet door 13, thereby opens and closes the top opening of inaccessible freely storeroom 4.In addition, in the other end of adiabatic cabinet door 13, present embodiment, be front end, be provided with handle portion 16, by operating this handle portion 16, can carry out opening and closing operations to adiabatic cabinet door 13.
On the other hand, in the side direction of body of thermal insulating box 2,, be provided with Machine Room 3 according to front panel 3A, not shown rear board and the side panel 3B that constitutes the side of a side opposite with a side that is provided with body of thermal insulating box 2.Machine Room 3 in the present embodiment is provided with the demarcation strip 17 that inside is separated up and down.The below of demarcation strip 17 is taken in and is provided with the compressor 10,20 that constitutes cooling device R as mentioned above etc., on the front panel 3A and side panel 3B that are positioned at below this demarcation strip 17, being formed with the ventilative slit 3C that uses.
Above demarcation strip 17, the Machine Room, top 18 of opening above forming.Top panel 5 rotates the top opening part that is arranged on this Machine Room, top 18 freely to be the center with the rear end in an end, the present embodiment, thus, can open and close 18 inside, Machine Room, inaccessible freely top.In addition, the panel of being arranged to be positioned at 18 fronts, Machine Room, top is the guidance panel 21 that is used to operate this refrigerating plant 1.
In the side of body of thermal insulating box 2 sides that constitute this Machine Room, top 18, be formed with and measure hole 19.This measures the mode of hole 19 to be communicated with storeroom 4, connects the outer container 6, the heat-insulating material 9 that constitute body of thermal insulating box 2 and reaches interior case 7 and form, and this storeroom 4 is formed in the body of thermal insulating box 2 that is provided with.Measure hole 19 temperature sensor is inserted in the storeroom 4 from the outside, this temperature sensor distribution of drawing is connected via measuring the tape deck body of hole 19 with the outside certainly.Utilization is by deformable and have the bolt 19A that the spongy special material of thermal insulation constitutes, and stops up the gap between this mensuration hole 19 and the distribution.In addition, under not temperature sensor mounted state, utilize this bolt 19A, measure hole 19 and stopped up adiabaticly.
Thus, use to the temperature in the storeroom 4 etc. measure, during equipment such as record, open the top panel 5 of being located at Machine Room 3,, this sensing equipment can be inserted in the storeroom 4 via the mensuration hole 19 that the side in body of thermal insulating box 2 sides that are positioned at Machine Room, top 18 forms.Therefore, can easily carry out sensing equipment is set to operation in the storeroom 4 of the ultralow temperature that has been cooled to regulation.
Especially the mensuration hole 19 of present embodiment is different with the mensuration hole of being located at refrigerating plant in the past, because it is formed at the side of Machine Room 18 sides of body of thermal insulating box 2, even if so this refrigerating plant 1 and laboratory etc. are provided with the wall of environment or other equipment in abutting connection with situation about being provided with, measure hole 19 and also do not need to reserve necessary interval in particular for using.Thus, can realize being provided with narrow and smallization of refrigerating plant 1 required area, be preferred aspect the layout of the chamber that experimentizes etc.
In addition, be formed at walls body of thermal insulating box 2 and sides Machine Room 3 adjacency owing to measure hole 19, therefore, front and rear wall and side with side beyond the side of Machine Room 3 adjacency, the body of thermal insulating box 2 that promptly constitutes towards the outside, do not measured the influence that hole 19 forms the position, can be set aforesaid vacuum heat-insulating plate 12.
In addition, details as described later, on the wall of the body of thermal insulating box 2 that is formed with this mensuration hole 19, be equipped with insulated structure 70 by the integrally formed tandem type heat exchanger of heat-insulating material (カ ス ケ-De) 43 and each intermediate heat exchanger 48 grade, so, even vacuum heat-insulating plate 12 is not set, also can effectively utilizes in 70 pairs of storerooms 4 of this insulated structure and carry out thermal insulation.
Thus, the cold and hot leakage rate in the storeroom 4 can be reduced, the unnecessary waste of cooling energy can be suppressed.
Therefore, even under as described in present embodiment, making in the storeroom 4 situation that for example reaches the ultralow temperature below-150 ℃, also can improve the heat-insulating property of body of thermal insulating box 2 self, can realize dwindling of adiabatic wall size, even if identical, also can seek to enlarge the volume of taking in the storeroom 4 with appearance and size in the past.Perhaps, though with in the past to take in volume identical, also can dwindle appearance and size, thus, also can realize being used to be provided with narrow and smallization of refrigerating plant 1 needed area.
In addition, the mensuration hole 19 in the present embodiment can be covered by top panel 5, and this top panel 5 can open and close the top opening of Machine Room, top 18, so, can form in appearance and see, measure the structure that does not expose in hole 19, can improve visual aesthetics.In addition,, can easily operate, can seek to improve operation measuring hole 19 by opening top panel 5.In addition, by removing demarcation strip 17, also easily operation setting can seek to improve upkeep operation in the equipment of another refrigerating plant of formation R of demarcation strip 17 belows.Except that to measuring hole 19 operates, this top panel 5 is made as the state of 18 inside, inaccessible Machine Room, thus, also the side stage that this top panel 5 be used as operation can be used, be applicable to that article such as sample taking in taking-up operation etc. to storeroom 4 in.
In addition, in the present embodiment, cover by the top panel 5 of the top opening of Machine Room, inaccessible top 18, be not limited to this, also can measure near the cover that be provided for covering this mensuration hole 19 hole 19 etc. though measure hole 19.
The refrigerant loop of the refrigerating plant 1 of present embodiment then, is described with reference to Fig. 6.The refrigerant loop of the refrigerating plant 1 of present embodiment is as polynary multi-stage refrigerating agent loop, by independently constituting as the high temperature side refrigerant loop 25 of first refrigerant loop with as the binary two-stage system refrigerant circuit of the low temperature side refrigerant loop 38 of second refrigerant loop respectively.
The compressor 10 that constitutes high temperature side refrigerant loop 25 is for using the motor compressor of single-phase or three-phase alternating-current supply, and the discharge side line 10D of this compressor 10 is connected with auxiliary condenser 26.For the edge of opening to storeroom 4 heats preventing its dewfall, this auxiliary condenser 26 and the refrigerant piping 27 that is provided in this edge of opening inboard (below be called frame pipe (Off レ-system パ イ プ)) are connected.This pipe 27 is connected with condenser 28 with after the oil cooler 29 of compressor 10 is connected.After refrigerant piping that comes out from condenser 28 and the oil cooler 30 that constitutes the compressor 20 of low temperature side refrigerant loop 38 are connected, be connected with condenser 31, the refrigerant piping that comes out from this condenser 31 via drier 32 and as the capillary 33 of decompressor, is connected with the evaporimeter 34 as evaporator section that constitutes evaporimeter successively.The outlet side refrigerant piping of evaporimeter 34 connects the accumulator 35 that stores the place as refrigerant liquid, and the refrigerant piping that comes out from this accumulator 35 is connected with the suction side pipe arrangement 10S of compressor 10.In addition, auxiliary condenser in the present embodiment 26 and condenser 38,31 constitute as the condenser of one, and the device that is condensed is with pressure fan 36 coolings.
In the high temperature side refrigerant loop 25,, be filled with the cold-producing medium that constitutes by R407D and pentane as the different non-azeotropic refrigerant of boiling point.R407D is by R32 (difluoromethane: CH
2F
2), R125 (pentafluoroethane: CHF
2CF
3), R134a (1,1,1,2-HFC-134a: CH
2FCF
3) constitute, it consists of: the R125 of the R32 of 15 weight %, 15 weight %, the R134a of 70 weight %.The boiling point of each cold-producing medium is respectively: R32 is-26.16 ℃ for-51.8 ℃, R125 for-48.57 ℃, R134a.In addition, the boiling point of pentane is+36.1 ℃.
High-temperature gas shape cold-producing medium from compressor 10 discharges, dispelled the heat by the oil cooler 30 of the compressor 20 of auxiliary condenser 26, frame pipe 27, oil cooler 29, condenser 28, low temperature side refrigerant loop 38, condenser 31 condensations after the liquefaction, remove the moisture that contains by drier 32, utilize after capillary 33 decompression inflow evaporator 34 in succession, cold-producing medium R32, R125 and R134a evaporation, from absorbing the gasification heat on every side and evaporimeter 34 being cooled off, return compressor 10 through accumulator 35 as the refrigerant liquid place of storing.
At this moment, the power of compressor 10 is for example 1.5HP, and operating evaporimeter 34 final arrival temperature are-27 ℃～-35 ℃.Under such low temperature, because the boiling point of the pentane in the cold-producing medium is+36.1 ℃, so, in evaporimeter 34, keep unevaporated liquid state, thereby it is inoperative fully to cooling off, but make it bring into play following effect: to dissolve under the state in the pentane at the moisture of sneaking into that the lubricating oil of compressor 10 or drier 32 are thoroughly absorbed, make it turn back to compressor 10; By this liquid refrigerant of evaporation in compressor 10, the temperature of compressor 10 is reduced.
On the other hand, in low temperature side refrigerant loop 38, compressor 20 and above-mentioned compressor 10 are similarly, for using the motor compressor of single-phase or three-phase alternating-current supply, the discharge side line 20D of this compressor 20 is connected with oil eliminator 40 via the radiator 39 that constitutes with threaded pipe type condenser (ワ イ ヤ コ Application デ Application サ).This oil eliminator 40 is connected with the oil return pipe 41 that turns back to compressor 20.Be connected the refrigerant piping of oil eliminator 40 outlet sides, be connected with condenser pipe 42 in inserting described evaporimeter 34 as the high-pressure side pipe arrangement.This condenser pipe 42 constitutes tandem type heat exchanger 43 in the lump with evaporimeter 32.
And the discharge pipe arrangement that is connected with the outlet side of condenser pipe 42 is connected with first gas-liquid separator 46 via drier 44.Utilize gas-liquid separator 46 isolated vapor phase refrigerant, flow through in first intermediate heat exchanger 48, and flow into second gas-liquid separator 49 via gas phase pipe arrangement 47.Utilize first gas-liquid separator, 46 isolated liquid phase refrigerants,,, flow into first intermediate heat exchanger 48, vapor phase refrigerant is evaporated and made its cooling through drier 51, as the capillary 52 of decompressor via liquid phase pipe arrangement 50.
By second gas-liquid separator, 49 isolated liquid phase refrigerants, via liquid phase pipe arrangement 53,, pass through capillary 55 again as decompressor through behind the drier 54, flow into second intermediate heat exchanger 56.By second gas-liquid separator, 54 isolated vapor phase refrigerant, flowing through in second intermediate heat exchanger 56 via gas phase pipe arrangement 57, flowing through again and be cooled in the process in the 3rd, the 4th intermediate heat exchanger 58,59 and liquefy, via pipe arrangement 68 and through drier 60, flow into capillary 61 as decompressor.Capillary 61 is connected with evaporation tube 62 as evaporimeter, and then evaporation tube 62 is connected with the 4th intermediate heat exchanger 59 via returning pipe arrangement 69.
The 4th intermediate heat exchanger 59 is connected with the suction side pipe arrangement 20S of compressor 20 with after the 3rd, second and first intermediate heat exchanger 58,56,48 is connected successively.Further be connected with the expansion drum 65 that stores cold-producing medium when compressor 20 stops via the capillary 66 as decompressor on the pipe arrangement 20S of suction side, being connected in parallel on this capillary 66 with the direction of expansion drum 65 is the check valve 67 of forward.
In the low temperature side refrigerant loop 38,, enclose the mixed non-azeotropic refrigerant that contains R245fa, R600, R404A, R508, R14, R50, R740 as seven kinds of different mix refrigerants of boiling point.R245fa is 1,1,1,3,3-pentafluoropropane (CF
3CH
2CHF
2), R600 is butane (CH
3CH
2CH
2CH
3).The boiling point of R245fa is that+15.3 ℃, the boiling point of R600 are-0.5 ℃.Therefore, by they are mixed to scale, then can replace the boiling point that in the past used to use for+8.9 ℃ R21.
In addition,, to scale, for example be 70/30 ratio in the present embodiment, it is mixed with non-flame properties R245fa, thus it is enclosed in the refrigerant loop 38 as the noninflammability compounding substances in R245fa/R600 because R600 is inflammable substance.In addition, in the present embodiment, add together gross weight, R245fa is set at 70 weight %, but, therefore, also can be set at more than the 70 weight % owing to, then have noninflammability all the more if surpass this percentage by weight with respect to R245fa and R600.
R404A is by R125 (pentafluoroethane: CHF
2CF
3), R143a (1,1,1-HFC-143a: CH
3CF
3), R134a (1,1,1,2-HFC-134a: CH
2FCF
3) constitute, it consists of: the R143a of the R125 of 44 weight %, 52 weight %, the R134a of 4 weight %.The boiling point of this mix refrigerant is-46.48 ℃.Therefore, can replace the boiling point that in the past used to use for-40.8 ℃ R22.
R508 is by R23 (fluoroform: CHF
3), R116 (hexafluoroethane: CF
3CF
3) constitute, its component is: the R116 of the R23 of 39 weight %, 61 weight %.The boiling point of this mix refrigerant is-88.64 ℃.
R14 is a carbon tetrafluoride (carbon tetrafluoride: CF
4), R50 is methane (CH
4), R740 is argon (Ar).Their boiling point is respectively: R14 is-185.86 ℃ for-127.9 ℃, R50 for-161.5 ℃, R740.In addition, R50 and combination with oxygen and have the danger of blasting, but by it is mixed the danger that does not just have blast with R14.Therefore, even the leakage accident of mix refrigerant takes place, can not blast yet.
In addition, aforesaid these cold-producing mediums, temporarily in advance R245fa is mixed with R50 with R600, R14, after making it become not combustion state, under the mixed state of mix refrigerant, R740 with mix refrigerant, R404A, R508A, R14 and the R50 of R245fa and R600 in advance, enclosed in the refrigerant loop.Perhaps, pressing the height order of boiling point, at first enclose R245fa and R600, secondly is R404A, R508A, R14, R50, is R740 at last.The composition of each cold-producing medium for example is set at: the mix refrigerant of R245fa and R600 is that 10.3 weight %, R404A are that 28 weight %, R508A are that the mix refrigerant of 29.2 weight %, R14 and R50 is that 26.4 weight %, R740 are 5.1 weight %.
In addition, in the present embodiment, also can in R404A, add the pentane (the relative gross weight of non-azeotropic refrigerant is positioned at the scope of 0.5～2 weight %) of 4 weight %.
The circulation of low temperature side cold-producing medium then, is described.The gas shape mix refrigerant of the HTHP of discharging from compressor 20 dispels the heat via discharging in the side line 20D inflow radiator 39, and the mix refrigerant mid-boiling point is high and as the pentane of the good oily carrier cold-producing medium of oil phase dissolubility and a part of condensation liquefaction of R600.
Flow in the oil eliminator 40 through the mix refrigerant behind the radiator 39, with the most of of compressor 20 lubricating oil of refrigerant mixed and the part (part of pentane, R600) by the cold-producing medium behind radiator 39 condensation liquefactions, turn back to compressor 20 by oil return pipe 41.Thus, the low boiling point refrigerant that purity is higher, than tandem type heat exchanger 43 more by flowing in the refrigerant loop 38 in downstream, thereby can obtain ultralow temperature effectively.Thus, even the compressor of equal-wattage 10,20 can be the ultralow temperature that storeroom 4 inside are cooled to regulation with the object that is cooled of bigger volume also, can seek increase and take in capacity and need not make refrigerating plant 1 whole the maximization.
At this, in the present embodiment, the cold-producing medium that flows in the oil eliminator 40 is temporarily cooled off by radiator 39, therefore, can reduce the refrigerant temperature that enters tandem type heat exchanger 43.Specifically, the refrigerant temperature that in the past flowed in the tandem type heat exchanger 43 is about+65 ℃, in the present embodiment, it can be reduced to+about 45 ℃.
Therefore, in tandem type heat exchanger 43, can alleviate the load on the compressor that is applied to the high temperature side refrigerant loop 25 that is used to cool off the cold-producing medium in the low temperature side refrigerant loop 35.In addition, owing to the cold-producing medium that can effectively cool off in the low temperature side refrigerant loop 35, so, can alleviate the load that is applied on the compressor 20 that constitutes low temperature side refrigerant loop 35.Thus, can realize the improvement of refrigerating plant 1 overall operation efficient.
Other mix refrigerant utilizes evaporimeter 34 to be cooled to about-40 ℃～-30 ℃ in tandem type heat exchanger 43 certainly, thus the part of refrigerant that the mix refrigerant mid-boiling point is high (part of R245fa, R600, R404A, R508) condensation liquefaction.And the mix refrigerant from the condenser pipe 42 of tandem type heat exchanger 43 flows out flows into first gas-liquid separator 46 through drier 44.At this moment, because R14, R50 and R740 boiling point in the mix refrigerant are extremely low, therefore be in the gaseous state that is not condensed as yet, the liquefaction that is condensed of the part of R245fa, R600, R404A, R508 is only arranged, so, R14, R50, R740 are split in the gas phase pipe arrangement 47, and R245fa, R600, R404A, R508 are split in the liquid phase pipe arrangement 50.
The refrigerant mixture and first intermediate heat exchanger 48 that flow into gas phase pipe arrangement 47 carry out heat exchange and after being condensed, arrive second gas-liquid separator 49.At this, the low temperature cold-producing medium that returns by evaporation tube 62 flows into first intermediate heat exchanger 48, and then, the liquid refrigerant that flows into liquid phase pipe arrangement 50 is through drier 51, in capillary 52, be depressurized the back and flow into first heat exchanger 48 and be evaporated, cool off thus, so, the result that the part of uncooled R14, R50, R740 and R508 is cooled off is that the medium temperature of first intermediate heat exchanger 48 reaches about-60 ℃.Therefore, by the liquefaction that is condensed fully of the R508 in the mix refrigerant of gas phase pipe arrangement 47, and be diverted in second gas-liquid separator 49.Because the boiling point of R14, R50, R740 is lower, so still be gaseous state.
In second intermediate heat exchanger 56, utilize drier 54 to remove moisture by the R508 after 49 shuntings of second gas-liquid separator also by after capillary 55 decompressions, flow into second intermediate heat exchanger 56, it cools off the R14 the gas phase pipe arrangement 57, R50 and R740 in the lump with the low-temperature refrigerant that returns from evaporation tube 62, makes the highest R14 condensation of evaporating temperature during this period.Consequently, the medium temperature of second intermediate heat exchanger 56 reaches about-90 ℃.
By the gas phase pipe arrangement 57 of this second intermediate heat exchanger 56, then through the 3rd intermediate heat exchanger 58 and by the 4th intermediate heat exchanger 59.At this, just the cold-producing medium that flows out from evaporimeter 62 turns back to the 4th intermediate heat exchanger 59, and according to experiment, the medium temperature of the 4th intermediate heat exchanger 59 reaches-130 ℃ of low-down temperature in the left and right sides.
Therefore, in the 4th intermediate heat exchanger 59, a part of condensation of R50 in the gas phase pipe arrangement 57 and R740 is after R14, a R50 after these liquefaction and the part of R740 are removed moisture by drier 60 and passed through capillary 61 decompressions, flow into evaporation tube 62 and evaporation, thus to around cool off.According to experiment, at this moment, the temperature of evaporation tube 62 reaches-160.3 ℃～-157.3 ℃ ultralow temperature.
Like this, utilize the poor of each cold-producing medium evaporating temperature in the low temperature side refrigerant loop 38, in each intermediate heat exchanger 48,56,58,59, make the condensation of refrigerant that still is in gas phase state in succession, in the evaporation tube 42 of final stage, can reach the ultralow temperature below-150 ℃.Therefore, this evaporation tube 62 is reeled in the mode that can carry out heat exchange and is constituted along heat-insulating material 9 sides of interior case 6, thus, can realize the storehouse temperatures below-152 ℃ in the storeroom 4 of refrigerating plant 1.
The cold-producing medium that flows out from evaporation tube 62 flows into the 4th intermediate heat exchanger 59, the 3rd intermediate heat exchanger 58, second intermediate heat exchanger 56, first intermediate heat exchanger 48 successively, converge with the cold-producing medium after in each heat exchanger, evaporating, and return compressor 20 from sucking pipe arrangement 20S.
The oil of sneaking into the cold-producing medium and being discharged from from compressor 20, most of by returning compressor 20 after oil eliminator 40 separation, but become oil vaporific and that from oil eliminator 40, discharge in the lump with cold-producing medium, be added to the high R600 of the intermiscibility of oil in state return compressor 20.Thus, can prevent the insufficient lubrication or the locking of compressor 20.In addition, because R600 directly returns compressor 20 with liquid condition and is evaporated, therefore can reduce the discharge temperature of compressor 20 in this compressor 20.
As mentioned above, utilize not shown control device,, the compressor 20 that constitutes low temperature side refrigerant loop 38 is carried out ON-OFF control based on the storehouse temperature in the storeroom 4.In this case, if utilize control device to stop the running of compressor 20, then the mix refrigerant in the low temperature side refrigerant loop 38 is the check valve 67 of forward via the direction with expansion drum 65, is recycled in the expansion drum 65.
Therefore, when stopping with compressor 20, cold-producing medium is compared via the situation that capillary 66 is recycled in the expansion drum 65, can extremely promptly via check valve 67 refrigerant-recovery in the refrigerant loop 38 be arrived in the expansion drum 65.
Thus, can prevent that the pressure in the refrigerant loop 38 from rising, when utilizing control device starting compressor 20, at leisure cold-producing medium be turned back to the refrigerant loop 38 from expansion drum 65, thus, can alleviate the starting load of compressor 20 via capillary 66.
Therefore, by promptly carry out compressor 20 when stopping cold-producing medium to the recovery of expansion drum 65, thereby can make the pressure in the refrigerant loop 38 promptly reach balance, when resetting compressor 20, can successfully carry out resetting of compressor 20 and can not apply load compressor 20.Thus, reach the needed time of equalizing pressure in the refrigerant loop 38 during by remarkable shortening compressor start, thereby, the running efficiency of compressor 20 can be improved, for example can shorten the needed time of the running that descends (プ Le ダ ウ ン ?translocation), can improve convenience.
On the other hand, as mentioned above, in the refrigerant loop of refrigerating plant 1, reach-160.3 ℃～-157.3 ℃ such ultralow temperature in the evaporation tube 62 of low temperature side refrigerant loop 38, also reach the low temperature about-40 ℃～-30 ℃ in the tandem type heat exchanger 43.And first intermediate heat exchanger 48 reaches about-60 ℃, and second intermediate heat exchanger 56 reaches about-90 ℃, and the 3rd, the 4th intermediate heat exchanger 58,59 reaches the ultralow temperature about-130 ℃.Therefore, the evaporation tube 62 in being provided in body of thermal insulating box 2,, also need to carry out fully insulation to other heat exchangers 43 etc.
Therefore, these tandem type heat exchangers 43 and the first, second, third and the 4th intermediate heat exchanger are arranged to utilize heat-insulating material to be trapped among around them and are constituted the insulated structure 70 of cuboid.Fig. 7 represents the stereogram of insulated structure 70, and Fig. 8 represents to remove the stereogram of the state behind the heat-insulating material of insulated structure 70.
At this, the detailed structure of insulated structure 70 is described.In addition, the part that with dashed lines surrounds among Fig. 6, promptly except that above-mentioned heat exchanger, also comprise accumulator 35, the capillary 33 that constitutes high temperature side refrigerant loop 25, drier 44, each gas-liquid separator 46,49, drier 51,54, the capillary 52,55 that constitutes low temperature side refrigerant loop 38, they constitute this insulated structure 70.End at insulated structure 70 is equipped with tandem type heat exchanger 43, and each intermediate heat exchanger 48,56,58,59 is positioned at the side of this tandem type heat exchanger 43, and is layeredly and sets.
Each intermediate heat exchanger 48,56,58,59 is made of dual spiral tube structure, promptly, the outer side line that diameter is bigger is shape ground multilayer-wound and constitute flat in the shape of a spiral, make their mutual coincidences, its inboard is reserved at interval, and side line also passed through the inboard of each intermediate heat exchanger 48,56,58,59 in each gas phase pipe arrangement 47,57 became.In the present embodiment, according to begin temperature order from low to high from lower floor, that is, orlop disposes the 4th, the 3rd intermediate heat exchanger 59,58, configuration second intermediate heat exchanger 56 on it, and the superiors dispose first intermediate heat exchanger 48.
In these the inboard of heat exchanger or tandem type heat exchanger 43 around, dispose each gas-liquid separator 46,49 (second gas-liquid separator 49 is not shown in Fig. 8), drier 44,51,54 (drier 54 is not shown in Fig. 8), accumulator 35 and each not shown capillary 33,52,55, thereby can seek to reduce the dead band, realize miniaturization of size.
In addition, in the insulated structure 70 of this embodiment, to be provided in the equipment in this insulated structure 70 and be provided in the pipe arrangement that this insulated structure 70 equipment outward are connected, face with an end side surface of the opposite side of a side that is equipped with described tandem type heat exchanger 34 and set.Specifically, discharge side line 10D behind the condenser 31 of the high temperature side refrigerant loop 25 that process is connected with tandem type heat exchanger 34, the suction side pipe arrangement 10S that is connected with compressor 10, discharge side line 20D behind the oil eliminator 40 of the low temperature side refrigerant loop 38 that process is connected with same tandem type heat exchanger 34, the suction side pipe arrangement 20S that is connected with the suction side of compressor 20, from being provided in the pipe arrangement 68 that 59 interior gas phase pipe arrangement 57 beginnings of the 4th intermediate heat exchanger are connected with evaporation tube 62, return pipe arrangement 69 from what 62 beginnings of this evaporation tube were connected with the 4th intermediate heat exchanger 59, a side that is provided in insulated structure 70 is concentrated in the coupling part of these pipe arrangements.
At this moment, the circulation temperature sets towards the outside than suction side pipe arrangement 10S, 20S and the discharge side line 20D gathering of higher cold-producing medium together, in the present embodiment, be installed at this insulated structure 70 that 3 sides set towards the Machine Room under the state of body of thermal insulating box 2, and be connected with evaporation tube 62; The pipe arrangement 68 of circulation super low temperature refrigeration agent and return that pipe arrangement 69 draws in together and set towards the outside of a side opposite with described suction side pipe arrangement 10S etc., in the present embodiment, be installed at this insulated structure 70 under the state of body of thermal insulating box 2 and set towards body of thermal insulating box 2 sides.In addition, drier 60 that is connected with pipe arrangement 68 and capillary 61 are equipped on the outside of insulated structure 70.
On the other hand, Fig. 9 represents the rear isometric view of refrigerating plant 1.This refrigerating plant 1 is formed with direction extension forwards, backwards and rearward opens wide on the sidewall of the body of thermal insulating box 2 that is positioned at Machine Room 3 sides rectangular aperture 71, the sidewall rear portion of 3 sides also is formed with otch 72 in the Machine Room accordingly with this opening 71.In this opening 71, insert aforesaid insulated structure 70 from the behind of body of thermal insulating box 2.At this moment, insulated structure 70 inserts in the opening 71 from a side that is equipped with tandem type heat exchanger 34, thus, side towards insulated structure 70 is extended each pipe arrangement 10S, 20S, the 20D, 68,69 that sets, the pipe arrangement 10D that is connected with the capillary 33 of high temperature side refrigerant loop 25, face the face of the plug direction of this insulated structure 70, face the back side of body of thermal insulating box 2 in the present embodiment.
Therefore, equipment such as compressor 10,20 are set to after 3 inside, Machine Room, at last insulated structure 70 is inserted in the opening 71, under this state, carry out pipe arrangement 68,69 is connected to the pipe arrangement connection of the evaporation tube 62 of being located at body of thermal insulating box 2 sides, and the pipe arrangement that carries out pipe arrangement 10S, 10D, 20S, 20D are connected with the equipment of Machine Room 3 sides connects.Thus, can easily carry out following pipe arrangement from the back side of body of thermal insulating box 2 connects, promptly the equipment that constitutes this insulated structure 70 is carried out pipe arrangement and is connected with evaporation tube 62 or the equipment such as compressor 10,20 in the Machine Room 3 of being equipped in being equipped on body of thermal insulating box 2, thereby can seek to improve pipe distribution operation and assembling operation.In addition, even if under situations such as each equipment that constitutes this insulated structure 70 breaks down, by with this insulated structure 70 to not being that the direction that constitutes a side of body of thermal insulating box 2 or Machine Room 3 is pulled out, thereby can easily carry out upkeep operation.
The extension of this insulated structure 70 constitutes the back side of each pipe arrangement and faces a part of side of Machine Room 3 sides, and utilization is bent to form section and is roughly cover member 73 obturations of L font.In addition, in this case, in the gap between the side that is formed at insulated structure 70 and Machine Room 3 sides, also can set the not shown heat-insulating shield that has loaded glass wool etc.
According to aforesaid structure, tandem type heat exchanger 43 and each intermediate heat exchanger 48,56,58,59, under the state of integrally formed insulated structure 70 by heat-insulating material, be equipped on the sidewall of Machine Room 3 sides of body of thermal insulating box 2, therefore, compare with the situation that this insulated structure 70 was arranged on body of thermal insulating box 2 back side portions in the past, can dwindle the depth size of refrigerating plant 1 integral body.
Therefore, the unfavorable condition that can avoid the existence because of the extension of the insulated structure 70 that is used to surround tandem type heat exchanger 43 grades to cause the depth size of device 1 integral body to increase, even if the described storehouse temperature of present embodiment is the refrigerating plant below-150 ℃, for example can guarantee also that the depth in the storehouse is of a size of about 495mm, and, can be about 765mm with the depth size Control of integral body, thus, can avoid being stuck in the common unfavorable condition of moving into mouthful (in general, being approximately about 800mm).Especially, this insulated structure 70 can be moved into a mouthful plug from general under the state that is installed in device 1, so at this position being set does not need insulated structure 70 is separated or it is connected from body, can avoid numerous and diverse operation.
Thus, needn't significantly dwindle taking in volume and can realize easily that moving into of refrigerating plant 1 take out of in the storehouse.In addition, the position is being set, the insulated structure 70 that is used to surround these tandem type heat exchanger 43 grades is outwards outstanding from the back side, so can make needed narrow and smallization of area is set.
In addition, needn't be as existing refrigerating plant be provided for surrounding the insulated structure around tandem type heat exchanger and each intermediate heat exchanger at the back side of body of thermal insulating box 2, therefore, as mentioned above, antetheca 6A, the rear wall 6B that vacuum heat-insulating plate 12 can be configured in the body of thermal insulating box 2 that constitutes towards the outside reach in the sidewall 6C of a side opposite with the Machine Room, even for example reach the ultralow temperature below-150 ℃ in the storeroom 4, also can improve the heat-insulating property of body of thermal insulating box 2 self.Therefore, can seek minification,, also can seek to enlarge the volume of taking in the storeroom 4 even identical with in the past appearance and size.Perhaps, though with in the past to take in volume identical, also can dwindle appearance and size, thus, also can realize being used to be provided with narrow and smallization of refrigerating plant 1 needed area.
In addition, in the present embodiment, can be that the back side is inserted in the sidewall of body of thermal insulating box 2 or therefrom extracted with insulated structure 70 from the rear of refrigerating plant 1, but be not limited to this, for example also can be from the place ahead or the top plug of body of thermal insulating box 2.Thus, with present embodiment similarly, can improve assembling operation with easily being assembled on the body of device 1 as the tandem type heat exchanger 43 of insulated structure 70 integrated formation and each intermediate heat exchanger 48 etc.
In addition, with present embodiment similarly, by from the place ahead or the top pull out insulated structure 70, thereby it can be removed from installing 1 body, can easily constitute the upkeep operation of the tandem type heat exchanger 43 of this insulated structure 70 and each intermediate heat exchanger 48 etc.
In addition, in the present embodiment, insulated structure 70 will constitute one such as the tandem type heat exchanger 43 of this refrigerating plant 1 and each intermediate heat exchanger 48 and constitute, but in addition, also can be only with tandem type heat exchanger 43 or only each intermediate heat exchanger 48 etc. is constituted as insulated structure 70 one, also can insulated structure 70 be equipped on the sidewall of body of thermal insulating box 2 in pluggable mode as described in the present embodiment.
In addition, in the present embodiment, refrigerating plant 1 to the multistage mode of following binary is illustrated, promptly, make evaporation after the condensation of refrigerant of discharging from compressor 10 or 20 and the high temperature side refrigerant loop 25 and the low temperature side refrigerant loop 38 of the independently cold-producing medium closed-loop path of performance cooling effect constitute refrigerant loop by constituting respectively, this refrigerant loop constitutes refrigerating plant 1, this low temperature side refrigerant loop 38 has: compressor 20, condenser pipe 42, evaporation tube 62, make be connected in series from the returning the cold-producing medium circulation of this evaporation tube 62 a plurality of, specifically be four intermediate heat exchangers 48,56,58,59, a plurality of, specifically be three capillaries 42,55,61, in this low temperature side refrigerant loop, enclose multiple non-azeotropic refrigerant, make through the condensating refrigerant in the cold-producing medium of condenser pipe 42 and converge in each intermediate heat exchanger via each capillary, utilize this intermediate heat exchanger that the uncooled cold-producing medium in the cold-producing medium is cooled off, thus, make lower boiling condensation of refrigerant successively, capillary 61 via final stage makes the minimum cold-producing medium of boiling point flow into evaporation tube 62, and, constitute tandem type heat exchanger 43 by the evaporimeter 34 of high temperature side refrigerant loop 25 and the condenser pipe 42 of low temperature side refrigerant loop 38, utilize the evaporation tube 42 of low temperature side refrigerant loop 38 to obtain ultralow temperature, but the present invention is not limited to this.
Promptly, for example, even if in the refrigerating plant of following polynary merely (binary) mode, by this tandem type heat exchanger 43 is constituted the described insulated structure 70 of present embodiment, and, also can obtain same effect with the side that Machine Room 3 sides of body of thermal insulating box 2 are inserted in these insulated structure 70 loading and unloading freely.This refrigerating plant possesses respectively to constitute makes evaporation after the condensation of refrigerant of discharging from compressor and the high temperature side refrigerant loop and the low temperature side refrigerant loop of the independently cold-producing medium closed-loop path of performance cooling effect, constitute the tandem type heat exchanger by the evaporimeter of high temperature side refrigerant loop and the condenser of low temperature side refrigerant loop, and utilize the evaporimeter of low temperature side refrigerant loop to obtain ultralow temperature.
In addition, similarly, even if in the refrigerating plant of following simple multistage mode, by each intermediate heat exchanger is constituted the described insulated structure 70 of present embodiment, and, also can obtain same effect with the side that Machine Room 3 sides of body of thermal insulating box 2 are inserted in these insulated structure 70 loading and unloading freely.This refrigerating plant possesses: compressor, condenser, evaporimeter, and a plurality of intermediate heat exchangers that are connected in series and a plurality of decompressor, and enclose multiple non-azeotropic refrigerant, these a plurality of intermediate heat exchangers and a plurality of decompressor circulate the cold-producing medium that returns from this evaporimeter, make through the condensating refrigerant in the cold-producing medium of condenser and converge in the intermediate heat exchanger via decompressor, utilize this intermediate heat exchanger that the uncooled cold-producing medium in the cold-producing medium is cooled off, thus, make lower boiling condensation of refrigerant successively, decompressor via final stage makes the minimum cold-producing medium inflow evaporator of boiling point, thereby obtains ultralow temperature.
Claims (4)
1, a kind of refrigerating plant possesses the refrigerant loop that is made of compressor and evaporimeter etc., and the storeroom that utilizes described evaporimeter to constitute in body of thermal insulating box is cooled to ultralow temperature, it is characterized in that,
Also possess the Machine Room that is configured in described body of thermal insulating box side direction and is provided with described compressor etc.,, constitute mensuration hole with described storeroom internal communication at the sidewall of the described Machine Room of described body of thermal insulating box side.
2, refrigerating plant as claimed in claim 1, it is characterized in that, described body of thermal insulating box is formed by the composite construction of vacuum heat-insulating plate and foamed thermal insulating, and the front and rear wall that described vacuum heat-insulating plate is disposed at described body of thermal insulating box reaches in the sidewall of a side opposite with described Machine Room.
3, refrigerating plant as claimed in claim 1 or 2 is characterized in that, is provided with the panel that can open and close that covers described mensuration hole in described Machine Room.
4, refrigerating plant as claimed in claim 3 is characterized in that, constitutes the top panel of described Machine Room in the mode that can open and close, and is opening under the state of this top panel, can operate described mensuration hole.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006135252A JP2007303791A (en) | 2006-05-15 | 2006-05-15 | Refrigerating apparatus |
| JP135252/2006 | 2006-05-15 | ||
| PCT/JP2007/059843 WO2007132802A1 (en) | 2006-05-15 | 2007-05-14 | Freezing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101443613A true CN101443613A (en) | 2009-05-27 |
| CN101443613B CN101443613B (en) | 2011-09-14 |
Family
ID=38693893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800176401A Active CN101443613B (en) | 2006-05-15 | 2007-05-14 | Freezing device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090249823A1 (en) |
| EP (1) | EP2019276B1 (en) |
| JP (1) | JP2007303791A (en) |
| KR (1) | KR20090008343A (en) |
| CN (1) | CN101443613B (en) |
| WO (1) | WO2007132802A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511319A (en) * | 2013-09-30 | 2015-04-15 | 爱斯佩克株式会社 | Apparatus for environmental test |
| CN107923689A (en) * | 2015-08-26 | 2018-04-17 | 松下健康医疗控股株式会社 | Ultra low temperature freezer |
| CN110305631A (en) * | 2019-07-03 | 2019-10-08 | 上海沛芾航天科技发展有限公司 | A kind of mixed working fluid refrigerant for environmental test chamber |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8011201B2 (en) * | 2009-09-30 | 2011-09-06 | Thermo Fisher Scientific (Asheville) Llc | Refrigeration system mounted within a deck |
| KR101155228B1 (en) * | 2009-11-23 | 2012-06-13 | 엘지전자 주식회사 | Air cooling type chiller |
| KR102168586B1 (en) | 2013-11-29 | 2020-10-22 | 삼성전자주식회사 | Refrigerator |
| US10126039B2 (en) | 2015-12-29 | 2018-11-13 | Whirlpool Corporation | Refrigeration appliance having side air intake vent with sound dampening |
| KR102129607B1 (en) * | 2016-03-11 | 2020-07-02 | 피에이치씨 홀딩스 주식회사 | Cryogenic freezer |
| WO2017205854A2 (en) * | 2016-05-26 | 2017-11-30 | Ahmad Mohammad Sharaz | Self-ice making/self heating hybrid food and beverage storage chest |
| KR102588870B1 (en) * | 2016-06-24 | 2023-10-13 | 엘지전자 주식회사 | Refrigerator for super-freezing a storing chamber |
| JP6994419B2 (en) * | 2018-03-29 | 2022-01-14 | 東京エレクトロン株式会社 | Cooling system |
| JP7311483B2 (en) * | 2019-03-04 | 2023-07-19 | 東芝ライフスタイル株式会社 | refrigerator |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE955148C (en) * | 1953-08-18 | 1956-12-27 | F & R Fischer K G | Portable, electric cooler |
| US3055972A (en) * | 1958-07-03 | 1962-09-25 | Robert E Peterson | Fluid leakage seal for electric cables |
| US3257820A (en) * | 1964-09-16 | 1966-06-28 | Charles B Case | Cold storage container |
| US3410109A (en) * | 1967-01-09 | 1968-11-12 | Howard R. Maryland | Iceless freezer chest |
| JPS5211749Y2 (en) * | 1973-07-27 | 1977-03-15 | ||
| DE7425284U (en) * | 1974-07-25 | 1976-07-29 | Elektrotechnik Ehmann Gmbh, 7101 Hoechstberg | REFRIGERANT CIRCUIT CAN BE STARTED OR USED ONLY |
| JPS5417549Y2 (en) * | 1974-11-15 | 1979-07-06 | ||
| JPS573973U (en) * | 1980-06-09 | 1982-01-09 | ||
| GB2180921B (en) * | 1985-09-25 | 1990-01-24 | Sanyo Electric Co | Refrigeration system |
| JPS6273046A (en) * | 1985-09-25 | 1987-04-03 | 三洋電機株式会社 | Refrigerator |
| US5046328A (en) * | 1990-03-01 | 1991-09-10 | Hoshizaki Electric Co., Ltd. | Refrigeration apparatus with article preserving and displaying chamber |
| JPH06213558A (en) * | 1993-01-19 | 1994-08-02 | Hitachi Ltd | Refrigerator |
| JPH10300330A (en) * | 1997-04-25 | 1998-11-13 | Sanyo Electric Co Ltd | Low temperature storage cabinet |
| JP2001056284A (en) * | 1999-08-20 | 2001-02-27 | Fukushima Industries Corp | Measurement hole cap |
| US6628520B2 (en) * | 2002-02-06 | 2003-09-30 | Hewlett-Packard Development Company, L.P. | Method, apparatus, and system for cooling electronic components |
| JP3733079B2 (en) * | 2002-03-29 | 2006-01-11 | 三洋電機株式会社 | Cold storage |
| US20040101031A1 (en) * | 2002-11-25 | 2004-05-27 | Ford Global Technologies, Inc. | Temperature sensor with improved response time |
-
2006
- 2006-05-15 JP JP2006135252A patent/JP2007303791A/en active Pending
-
2007
- 2007-05-14 US US12/300,707 patent/US20090249823A1/en not_active Abandoned
- 2007-05-14 WO PCT/JP2007/059843 patent/WO2007132802A1/en active Application Filing
- 2007-05-14 EP EP07743278.9A patent/EP2019276B1/en active Active
- 2007-05-14 KR KR1020087027848A patent/KR20090008343A/en active Search and Examination
- 2007-05-14 CN CN2007800176401A patent/CN101443613B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511319A (en) * | 2013-09-30 | 2015-04-15 | 爱斯佩克株式会社 | Apparatus for environmental test |
| TWI572855B (en) * | 2013-09-30 | 2017-03-01 | Espec Corp | Environmental test device |
| CN107923689A (en) * | 2015-08-26 | 2018-04-17 | 松下健康医疗控股株式会社 | Ultra low temperature freezer |
| CN110305631A (en) * | 2019-07-03 | 2019-10-08 | 上海沛芾航天科技发展有限公司 | A kind of mixed working fluid refrigerant for environmental test chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007132802A1 (en) | 2007-11-22 |
| EP2019276A1 (en) | 2009-01-28 |
| JP2007303791A (en) | 2007-11-22 |
| US20090249823A1 (en) | 2009-10-08 |
| EP2019276B1 (en) | 2020-01-08 |
| CN101443613B (en) | 2011-09-14 |
| KR20090008343A (en) | 2009-01-21 |
| EP2019276A4 (en) | 2013-12-25 |
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