CN102128525B - Thermal expansion valve and refrigerating system with same - Google Patents
Thermal expansion valve and refrigerating system with same Download PDFInfo
- Publication number
- CN102128525B CN102128525B CN201010004835.6A CN201010004835A CN102128525B CN 102128525 B CN102128525 B CN 102128525B CN 201010004835 A CN201010004835 A CN 201010004835A CN 102128525 B CN102128525 B CN 102128525B
- Authority
- CN
- China
- Prior art keywords
- expansion valve
- awareness tool
- perception
- heating power
- awareness
- 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.)
- Active
Links
Images
Landscapes
- Fluid-Driven Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention relates to a thermal expansion valve belonging to the technical field of refrigerating control. The thermal expansion valve comprises a valve body, a sensing mechanism for sensing the pressure change of a system, an actuating mechanism and a transmission mechanism arranged between the sensing mechanism and the actuating mechanism, wherein the transmission mechanism converts a pressure signal sensed by the sensing mechanism into a displacement signal to be transmitted to the actuating mechanism. The thermal expansion valve is characterized in that the sensing mechanism comprises two sensing parts which are independently arranged on the valve body and take Bourdon tubes as sensors, and the two independent sensing parts simultaneously act on the transmission mechanism. The invention also relates to a refrigerating system with the thermal expansion valve. The invention overcomes the defect that an expansion valve taking diaphragms, corrugated tubes and the like as the sensors in the traditional structure can not adapt to a high-pressure environment, achieves the structural modularization of products, and improves the reliability of products.
Description
Technical field
The invention belongs to refrigeration control technical field, be suitable for vapor compression heat pump systems (as air-conditioning system) etc.The thermal expansion valve arrangement that is specifically related to use in high-pressure medium.
Background technology
Heating power expansion valve is control element important in refrigeration control system, and in prior art, heating power expansion valve generally adopts diaphragm element as inductive means.Heating power expansion valve as shown in figure 11, this structure comprise offer throttling chamber 11 ' and balance chamber 12 ' valve body 1 ', throttling chamber 11 ' in be provided with spool 2 ', valve body 1 ' one end be fixed with air tank head 200 as temperature sensing part ', air tank head 200 ' by gas tank seat 201 ', driver blade 202 ', diaphragm 203 ', gas tank lid 204 ' composition, diaphragm 203 ' gentle case lid 204 ' between annular seal space 205 ' in be filled with temperature sensing medium, when balance chamber 12 ' and annular seal space 205 ' in temperature sensing medium pressure while changing, this variation impels the variation of diaphragm 203 ' promotion driver blade 202 ' generation displacement, again by this variation by drive disk assembly 4 ' movement be delivered to spool 2 ', control the size of the circulation area at valve port place, adjust by the refrigerant flow effect of throttling passage to reach.
But in recent years, depletion of the ozone layer and greenhouse effects problem receive global concern day by day, the CFC class refrigeration working medium using in the past damages the ozone layer, although the HFC class refrigeration working medium using now does not damage the ozone layer, greenhouse effects are obvious.So state-of-the-art technology is being found the new refrigerant medium without impact on environment always.But, although some alternative refrigerant medium can not have impact to environment, but need in hyperbaric environment, work, as use in the refrigeration system of carbon dioxide as cold-producing medium, high side pressure can reach 70-150bar, the refrigeration system components and parts of some prior aries cannot meet this requirement, can produce potential safety hazard or not reach the refrigeration of optimization.Heating power expansion valve as shown in figure 11, cold-producing medium in confined space is filled with in confined space with liquid condition, be exposed at normal temperatures in atmosphere once expansion gear, pressure differential between pressure and atmosphere in confined space just becomes very large, the diaphragm that forms confined space can be out of shape or break under such pressure differential, and cannot bear the working environment of high pressure.So, how to design a kind of heating power expansion valve of the high reliability using and to refrigeration system, be the difficult problem that those skilled in the art makes great efforts to capture in hyperbaric environment.
Summary of the invention
In view of the use limitation of above-mentioned prior art existence, the technical problem to be solved in the present invention is to overcome prior art problem to be, providing a kind of can use in high-pressure sealed space, good stability and lower-cost thermal expansion valve arrangement and use the refrigeration system of this heating power expansion valve.
For this reason, the present invention discloses following technical scheme: a kind of heating power expansion valve, comprise perception mechanism, the executing agency that valve body, sensory perceptual system pressure change and be arranged on the transmission mechanism between described perception mechanism and described executing agency, it is characterized in that, described perception mechanism comprises two awareness tools that are independently arranged on described valve body;
Preferably, in such scheme, described two independently awareness tool simultaneously by the signal function of perception on described transmission mechanism;
Preferably, described awareness tool by Bourdon tube as sensor;
Particularly, described awareness tool also includes the base with cavity, the airtight connection of cavity of described Bourdon tube and described base;
Further, described transmission mechanism comprises jointed gear unit and gear drive, and the driving gear of described gear drive is sector gear (204).
Simultaneously, the invention also discloses a kind of refrigeration system, this refrigeration system comprises compressor, condenser, evaporimeter and heating power expansion valve, described heating power expansion valve comprises perception mechanism, the executing agency that valve body, sensory perceptual system pressure change and is arranged on the transmission mechanism between described perception mechanism and described executing agency, it is characterized in that, described perception mechanism comprises that two are independently arranged on the pressure signal of introducing respectively described evaporator outlet end on described valve body and the awareness tool of temperature signal;
Preferably, in such scheme, described two independently awareness tool simultaneously by the signal function of perception on described transmission mechanism;
Preferably, described awareness tool by Bourdon tube as sensor.
Heating power expansion valve of the present invention and refrigeration system, adopt high-pressure sealed flexible member Bourdon tube to be used in the control that realizes stream flow in heating power expansion valve as sensor, avoided utilizing diaphragm, bellows etc. can not adapt to the defect of hyperbaric environment as the structure of sensor.Meanwhile, the ripe integrity of the popularity of its application of Bourdon tube, technique makes its low cost of manufacture, unfailing performance high.In the present invention, use two pressure or temperature signals that independently gather respectively zones of different with Bourdon tube as the awareness tool of sensor, do not interfere with each other, realize product structure simple modular, improved the reliability of product.
Accompanying drawing explanation
Fig. 1: the front view of one of heating power expansion valve concrete structure provided by the invention;
Fig. 2: in Fig. 1, heating power expansion valve concrete structure is at the top view of removing after valve bonnet;
Fig. 3/Fig. 4: in Fig. 1, heating power expansion valve concrete structure is at the internal anatomy of B and C direction;
Fig. 5/Fig. 6: in Fig. 1, heating power expansion valve concrete structure is at the diagram of F and G direction;
Fig. 7 A/7B: the awareness tool structural representation of heating power expansion valve concrete structure in Fig. 1;
Fig. 8 A/8B: the front view of the awareness tool in Fig. 7 A/7B;
Fig. 9 A/9B: the front view of another awareness tool structure concrete structure of heating power expansion valve provided by the invention;
Figure 10: the schematic diagram of heating power expansion valve provided by the invention position in refrigeration system;
Figure 11: the front view of the heating power expansion valve concrete structure of prior art.
Symbol description in figure:
100-heating power expansion valve;
1/1 '-valve body;
101-transverse holes, 102-upright opening;
103-valve port, 104/105-connecting hole;
106-nut;
2-valve bonnet;
3-regulating part, 4-regulating spring;
5-fluid inlet tubes, 6-fluid outlet pipe;
7/8-conduit, 9-cavity;
200-transmission mechanism;
201/202-connecting rod, 203-driver blade;
204-sector gear, 205/206/207/208-movable axis;
209-fixed axis;
210-upper mounted plate, 211-bottom plate;
212-hold-down screw;
213-gear, 214/215-inside/outside screw thread;
216-gear shaft;
300 executing agencies;
301-drive link, 302-spool, 303-valve core case;
400-perception mechanism;
410/410A-the first awareness tool;
411-Bourdon tube, 412/412A-Bourdon tube base, 413-end socket part;
414-cavity, 415-conduit connecting portion;
420/420A-the second awareness tool;
421-Bourdon tube, 422/422A-Bourdon tube base, 423-end socket part;
424-cavity, 425-conduit connecting portion;
510-compressor, 520-condenser;
530-evaporimeter, 540-temperature-sensitive bag.
The specific embodiment
Fig. 1 is the front view of one of heating power expansion valve concrete structure provided by the invention; Fig. 2 is that this structure is at the top view of removing after valve bonnet; Fig. 3 and Fig. 4 are that this structure is respectively at the internal anatomy of overlooking of B and C direction;
As shown in Fig. 1 and Fig. 2 and Fig. 3 and Fig. 4.Heating power expansion valve 100 mainly comprises perception mechanism 400, transmission mechanism 200 and executing agency's 300 three parts.The valve body 1 of hot-forging forming forms a cavity 9 with the airtight welding of valve bonnet 2 of the semiclosed shape of thin-walled, on valve body 1, offer vertical transverse holes 101 and the upright opening 102 connecting mutually, the fluid inlet tubes 5 that is integrally formed circular tube shaped is extended in bottom at valve body 1, fluid outlet pipe 6 and the airtight welding of transverse holes 101.Bottom plate 211 is fixed on by 2 hold-down screws on the transverse plane of the valve body 1 in cavity 9, upper mounted plate 210 is fixed on bottom plate 211 and the certain distance of parallel interval by 2 hold-down screws 211, and transmission mechanism 200 entirety are placed in the gap forming between upper mounted plate 210 and bottom plate 211.
The fixed axis 209 of transmission mechanism 200 and the two ends of gear shaft 216 are placed in respectively the axis hole of upper mounted plate 210 and bottom plate 211.On gear shaft 216, be equipped with gear 213 and external screw thread 214, be provided with internal thread 215 on bottom plate 211, external screw thread 214 coordinates the transmission of formation screw thread to pay with internal thread 215, drive link 301 is moved axially in rotating.On fixed axis 209, be provided with the driver blade 203 and the sector gear 204 that are consolidated and can rotate around fixed axis 209.Sector gear 204 coordinates formative gear transmission to pay with gear 213.
The drive link 301 of executing agency 300 is fixed (in the present embodiment with the gear shaft 216 of transmission mechanism 200, drive link 301 and gear shaft 216 are structure as a whole), spherical spool 302 is placed on valve core case 303, regulating part 3 is fixed on by screw thread in fluid inlet tubes 5 endoporus of valve body 1, and by regulating spring 4, spool 302 is supported to drive link 301, in the upright opening 102 of valve body 1, be also processed with valve port 103, like this, under the power applying at drive link 301 and the acting in conjunction of spring force, spool 302 with respect to valve port 103 away from or close, regulate the fluid circulation area that flows to fluid outlet pipe 6 from fluid inlet tubes 5, reach throttling control object.
Fig. 7 A/7B is the structural representation of the awareness tool of this expansion valve, the front view that Fig. 8 A/8B is awareness tool.
As shown in Fig. 7 A/7B and Fig. 8 A/8B.Perception of the present invention mechanism 400 comprises the first awareness tool 410 and the second awareness tool 420 that are roughly mutually mirror symmetry structure.The first awareness tool 410 comprises the Bourdon tube 411 as " C " type of pressure sensor, welds airtightly in one end of Bourdon tube 411 by end socket part 413, and the other end of Bourdon tube 411 is communicated with Bourdon tube base 412 welding with cavity 414; Equally, the second awareness tool 420 comprises the Bourdon tube 421 as " C " type of pressure sensor, welds airtightly in one end of Bourdon tube 421 by end socket part 423, and the other end of Bourdon tube 421 is communicated with Bourdon tube base 422 welding with cavity 424.
Fig. 5/Fig. 6 is the diagram of this heating power expansion valve concrete structure in F and G direction.
As shown in Figure 5 and Figure 6.Bourdon tube base 412 and the valve body 1 of the first awareness tool 410 weld fixed, and by being opened in the tube connector 104 on valve body 1, the inner chamber of Bourdon tube 411 is communicated with conduit 8, and the end socket part 413 of the first awareness tool 410 is connected with driver blade 203 with connecting rod 201 by movable axis 205/206; Bourdon tube base 422 and the valve body 1 of the second awareness tool 420 weld fixed, and by being opened in the tube connector 105 on valve body 1, the inner chamber of Bourdon tube 421 is communicated with conduit 7, and the end socket part 423 of the second awareness tool 420 is connected with driver blade 203 with connecting rod 202 by movable axis 208/207.
Figure 10 is the schematic diagram of heating power expansion valve position in refrigeration system of above-mentioned concrete structure.
As shown in figure 10.The fluid outlet pipe 6--evaporimeter 530--compressor 510 of the fluid inlet tubes 5---heating power expansion valve 100 of compressor 510--condenser 520--heating power expansion valve 100 forms refrigeration system loop, temperature-sensitive bag 540 is placed in the port of export of evaporimeter 530 and is communicated with the adapter 7 of heating power expansion valve 100, temperature-sensitive bag 540 be filled with temperature sensing medium come sensing evaporator 530 the port of export variations in temperature and change into pressure and change and pass to the Bourdon tube 411 of the first awareness tool 410, bellows 411 changes into force signal by pressure signal and passes to driver blade 203; The adapter 8 of heating power expansion valve 100 is communicated with the port of export of evaporimeter 530.The pressure that carrys out the port of export of sensing evaporator 530 changes and passes to the Bourdon tube 421 of the second awareness tool 420, and bellows 421 changes into force signal by pressure signal and passes to driver blade 203.
Fig. 9 A/9B is the front view of another awareness tool structure concrete structure of heating power expansion valve provided by the invention.
As shown in Fig. 9 A/9B.Different from such scheme is, the first awareness tool 410A of heating power expansion valve comprises the Bourdon tube 411 as " C " type of pressure sensor, one end at Bourdon tube 411 is welded airtight by end socket part 413, the other end of Bourdon tube 411 is communicated with the Bourdon tube base 412A welding with cavity 414, and Bourdon tube base 412A is fixed on the bottom of valve body 1 by nut 106.One end at Bourdon tube pipe base 412A forms conduit connecting portion 415, conduit 8 is directly connected with Bourdon tube pipe base 412A by conduit connecting portion 415, like this, system pressure signal is directly incorporated into Bourdon tube from the base plate through holes of awareness tool, can realize the modular combination of awareness tool, make assembling and use convenient.The second awareness tool 420A of heating power expansion valve has used the same structure mode with the first awareness tool 410A, does not repeat them here.
Below be only the preferred embodiment exemplifying for setting forth technical scheme of the present invention; should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention; can also make some improvements and modifications, all these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a heating power expansion valve, be arranged in refrigeration system, and be connected with the evaporimeter in described refrigeration system, the port of export of described evaporimeter is connected with the temperature-sensitive bag of the port of export variations in temperature of evaporimeter described in perception, described heating power expansion valve comprises valve body (1), the perception mechanism (400) that sensory perceptual system pressure changes, executing agency (300), and be arranged on the transmission mechanism (200) between described perception mechanism (400) and described executing agency (300), it is characterized in that, described perception mechanism (400) comprises two the first awareness tool (410) and the second awareness tools (420) that are independently arranged on described valve body (1), described in described the first awareness tool (410) perception, the pressure of temperature-sensitive bag changes, described in described the second awareness tool (420) perception, the pressure of the port of export of evaporimeter changes, described the first awareness tool (410) and described the second awareness tool (420) are simultaneously upper in described transmission mechanism (200) by the signal function of perception, and described transmission mechanism (200) is subject to from the force action of described the first awareness tool (410) and described the second awareness tool (420) and start.
2. heating power expansion valve as claimed in claim 1, is characterized in that, described the first awareness tool (410) and described the second awareness tool (420) respectively by the first Bourdon tube (411) and the second Bourdon tube (421) as sensor.
3. heating power expansion valve as claimed in claim 2, it is characterized in that, described the first awareness tool (410) and described the second awareness tool (420) also include with first base (412) of cavity and the second base (422), described the first Bourdon tube (411) and described the second Bourdon tube (421) respectively with airtight connection of cavity of described the first base (412) and described the second base (422).
4. the arbitrary heating power expansion valve as described in claim 1-3, is characterized in that, described transmission mechanism (200) comprises jointed gear unit and gear drive.
5. heating power expansion valve as claimed in claim 4, is characterized in that, the driving gear of described gear drive is sector gear (204).
6. a refrigeration system, comprise compressor, condenser, evaporimeter and heating power expansion valve, described heating power expansion valve comprises valve body (1), the perception mechanism (400) that sensory perceptual system pressure changes, executing agency (300), and be arranged on the transmission mechanism (200) between described perception mechanism (400) and described executing agency (300), it is characterized in that, the port of export of described evaporimeter is connected with the temperature-sensitive bag of the port of export variations in temperature of evaporimeter described in perception, described perception mechanism (400) comprises two the first awareness tool (410) and the second awareness tools (420) that are independently arranged on described valve body (1), described in described the first awareness tool (410) perception, the pressure of temperature-sensitive bag changes, described in described the second awareness tool (420) perception, the pressure of the port of export of evaporimeter changes,
Described the first awareness tool (410) and described the second awareness tool (420) are simultaneously upper in described transmission mechanism (200) by the signal function of perception, and described transmission mechanism (200) is subject to from the force action of described the first awareness tool (410) and described the second awareness tool (420) and start.
7. refrigeration system as claimed in claim 6, is characterized in that, described the first awareness tool (410) and described the second awareness tool (420) respectively by the first Bourdon tube (411) and the second Bourdon tube (421) as sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010004835.6A CN102128525B (en) | 2010-01-13 | 2010-01-13 | Thermal expansion valve and refrigerating system with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010004835.6A CN102128525B (en) | 2010-01-13 | 2010-01-13 | Thermal expansion valve and refrigerating system with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102128525A CN102128525A (en) | 2011-07-20 |
| CN102128525B true CN102128525B (en) | 2014-05-14 |
Family
ID=44266715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010004835.6A Active CN102128525B (en) | 2010-01-13 | 2010-01-13 | Thermal expansion valve and refrigerating system with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102128525B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063177B (en) * | 2012-12-27 | 2015-08-19 | 太原航空仪表有限公司 | A kind of high temperature high voltage resistant high precision sensitive element |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB320974A (en) * | 1928-08-03 | 1929-10-31 | John Dewrance | Improvements in or relating to safety or relief valves |
| US4150687A (en) * | 1977-05-12 | 1979-04-24 | Blanton James R | Well pilot valve assembly |
| US4462301A (en) * | 1981-11-04 | 1984-07-31 | Baker Cac, Inc. | Bourdon tube actuator |
| CN1193094A (en) * | 1997-03-11 | 1998-09-16 | 株式会社不二工机 | Expansion valve |
| EP0931991A2 (en) * | 1998-01-21 | 1999-07-28 | Denso Corporation | Supercritical refrigerating system |
| CN101545555A (en) * | 2008-03-27 | 2009-09-30 | 浙江三花汽车控制系统有限公司 | Pressure control valve for controlling opening degree of valve core through utilization of sensing element and refrigeration system |
-
2010
- 2010-01-13 CN CN201010004835.6A patent/CN102128525B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB320974A (en) * | 1928-08-03 | 1929-10-31 | John Dewrance | Improvements in or relating to safety or relief valves |
| US4150687A (en) * | 1977-05-12 | 1979-04-24 | Blanton James R | Well pilot valve assembly |
| US4462301A (en) * | 1981-11-04 | 1984-07-31 | Baker Cac, Inc. | Bourdon tube actuator |
| CN1193094A (en) * | 1997-03-11 | 1998-09-16 | 株式会社不二工机 | Expansion valve |
| EP0931991A2 (en) * | 1998-01-21 | 1999-07-28 | Denso Corporation | Supercritical refrigerating system |
| CN101545555A (en) * | 2008-03-27 | 2009-09-30 | 浙江三花汽车控制系统有限公司 | Pressure control valve for controlling opening degree of valve core through utilization of sensing element and refrigeration system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102128525A (en) | 2011-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101545555B (en) | Pressure control valve for controlling opening degree of valve core through utilization of sensing element and refrigeration system | |
| JP2007327672A (en) | Expansion valve | |
| CN101162051B (en) | Automobile air-conditioning heating power expansion valve | |
| CN104344611B (en) | A kind of expansion valve | |
| CN102128525B (en) | Thermal expansion valve and refrigerating system with same | |
| CN204387380U (en) | Insulation semispherical valve | |
| CN203585420U (en) | Bellows three-link low-torque stop valve | |
| CN102661639A (en) | Thermostatic expansion valve | |
| CN115977918B (en) | Double-layer shell noise reduction structure | |
| CN2516919Y (en) | Expansion valve of air conditioner | |
| CN102109062B (en) | Diaphragm capsule temperature sensing system of thermal expansion valve | |
| CN209638520U (en) | Temp sensing driver and the flow control valve for using the temp sensing driver | |
| CN206488518U (en) | A kind of heating power expansion valve | |
| CN105465440B (en) | Heating power expansion valve | |
| CN201945102U (en) | Electronic expansion valve of refrigeration system | |
| CN218718881U (en) | Butterfly valve capable of being remotely controlled in multiple sections | |
| CN216279395U (en) | High-precision adjusting valve with needle type valve core | |
| JPH0829019A (en) | Expansion valve for cooler device | |
| CN107131512B (en) | A kind of Acoustic regulation soot blower | |
| CN2814066Y (en) | Temperature sensing device in bidirectional thermal expansion valve | |
| CN203177551U (en) | Thermal expansion valve | |
| CN205605930U (en) | Novel improve cage type adjusting valve of structure | |
| CN202792729U (en) | Refrigeration system pipeline for movable air conditioner | |
| CN206281258U (en) | A kind of air conditioning for automobiles unit | |
| CN2739445Y (en) | Expansion gas tank head drive piece guide structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170224 Address after: 312500 Zhejiang city of Shaoxing province Xinchang County Chengguan town of Liquan Patentee after: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. Address before: 312500 Liquan village of Zhejiang County in Xinchang Province town under Patentee before: ZHEJIANG SANHUA Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220815 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: Xia Li Quan, Chengguan Town, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |