CN202485266U - Water chilling unit - Google Patents
Water chilling unit Download PDFInfo
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- CN202485266U CN202485266U CN2011203770490U CN201120377049U CN202485266U CN 202485266 U CN202485266 U CN 202485266U CN 2011203770490 U CN2011203770490 U CN 2011203770490U CN 201120377049 U CN201120377049 U CN 201120377049U CN 202485266 U CN202485266 U CN 202485266U
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Abstract
The utility model relates to a water chilling unit which comprises a secondary refrigerant main circuit, a refrigerant circuit, a secondary refrigerant bypass and a control module. A dry cooler, a secondary refrigerant heat-absorption heat exchanger, a first booster pump and a control valve and the like are connected in series by a secondary refrigerant pipeline to form the secondary refrigerant main circuit. A compressor, an evaporator, an expansion valve and a condenser and the like are connected in series by a refrigerant pipeline to form the refrigerant circuit. The secondary refrigerant bypass is connected with the secondary refrigerant main circuit, a second booster pump is arranged inside the secondary refrigerant bypass, and the control module controls the operation of the water chilling unit. The water chilling unit is provided with at least one transition season mode. When the water chilling unit is in the transition season mode, the refrigerant circuit and the secondary refrigerant bypass operate, a part of the secondary refrigerant outflowing from the secondary refrigerant heat-absorption heat exchanger passes the secondary refrigerant bypass and is mixed with another part of the secondary refrigerant and then passes the dry cooler and the evaporator and finally reflows into the secondary refrigerant heat-absorption heat exchanger. According to the water chilling unit, the outdoor environment can be fully used as cold source, and the output of the compressor can be reduced. Meanwhile, the water chilling unit has good energy-saving effect and can meet the requirements of perennial refrigeration.
Description
Technical field
The utility model relates to refrigeration system, more particularly, relates to a kind of handpiece Water Chilling Units.
Background technology
Handpiece Water Chilling Units is a kind of common cold source of air conditioning, and along with the progress of expanding economy with society, have higher requirement to such unit in some application scenarios, requires to realize whole year operation and enough colds can be provided.These application scenarios mainly show as occasions such as computer floor, medical treatment, food production, operating room, medicine manufacturing, Chemical Manufacture; Usually in the time of outdoor-20 ℃, also need freeze to indoor, can this just normal at low temperatures for a long time operation propose challenge to handpiece Water Chilling Units.Especially for the water-cooled handpiece Water Chilling Units, cooling refrigeration agent again after it uses cooling tower to water for cooling receives the influence of climatic environment bigger, and can't guarantee has the engineering more complicated, shortcomings such as expense height simultaneously in outdoor low temperature environment operation.
How special place for computer floor and this type of data center needs whole year refrigeration makes handpiece Water Chilling Units guarantee whole year operation and more energy-conservation, and mainly have following two kinds of technological means at present: wind-cooled cold-water unit and ethylene glycol cool off naturally.Below with these two kinds of technological means of brief account.
1. wind-cooled cold-water unit, the wind-cooled cold-water unit utilizes the air cooling refrigeration agent under the environment temperature, has saved cooling tower, and through changing condensation fan rotating speed control condensing pressure, control is simple, and is easy to maintenance.But its operational efficiency under low ambient temperature is lower, and unit for a long time at low temperatures the operation will reduce its service life.
2. ethylene glycol cools off naturally, and ethylene glycol nature cooling refrigeration technology makes spent glycol as refrigerating medium, on the basis of former wind-cooled cold-water unit, increases by a cover ethylene glycol coil pipe.When outdoor temperature is low, cools off glycol water naturally and directly send into the indoor heat exchange of carrying out with outdoor low temperature; When outdoor temperature is higher, the circulation of operation compressor cooling.Weak point: need the special huge ethylene glycol heat exchange coil of a cover volume that increases; And this cover coil pipe was on the shelf in the most of the time except outdoor temperature lower (being generally winter) in 1 year, and did not almost have energy saving for warm southern area.
The utility model content
The technical problem that the utility model will solve is, to the above-mentioned energy saving difference defective of the handpiece Water Chilling Units of prior art, a kind of handpiece Water Chilling Units of good energy saving property is provided.
The utility model solves the technical scheme that its technical problem adopted: construct a kind of handpiece Water Chilling Units, comprising:
Refrigerating medium major loop, said refrigerating medium major loop comprise by the dry and cold device of refrigerating medium pipeline series connection, refrigerating medium heat absorption heat exchanger, first booster pump and control valve;
Refrigerant loop, said refrigerant loop comprise compressor, evaporimeter, expansion valve and the condenser by the refrigerant lines series connection;
The refrigerating medium bypass links to each other with said refrigerating medium major loop, is provided with second booster pump in the said refrigerating medium bypass;
Said evaporimeter has refrigerant passage and refrigerating medium path, and the refrigerating medium path of said evaporimeter is connected in the said refrigerating medium major loop;
Said condenser has refrigerant passage and refrigerating medium path, and the refrigerating medium path of said condenser is connected in the said refrigerating medium bypass;
Control module is used to control said handpiece Water Chilling Units operation;
Said handpiece Water Chilling Units has a transition season pattern at least; When being in said transition season pattern; Said refrigerant loop operation; Said refrigerating medium bypass operation, bypass mixes with another part refrigerating medium the part of the refrigerating medium that is flowed out by said refrigerating medium heat absorption heat exchanger then through refrigerating medium, and mixed refrigerating medium flows back to the refrigerating medium heat exchanger that absorbs heat through dry and cold device, evaporimeter again.
In the described handpiece Water Chilling Units of the utility model, said handpiece Water Chilling Units comprises first temperature sensor of the condensation temperature that is used to obtain said condenser, and when being in the transition season pattern, the refrigerating medium flow of said refrigerating medium bypass is regulated according to said condensation temperature.
In the described handpiece Water Chilling Units of the utility model, when being in the transition season pattern, the output percentage of said compressor is regulated according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature.
In the described handpiece Water Chilling Units of the utility model, said handpiece Water Chilling Units also has a winter mode, and when being in said winter mode, said refrigerant loop is out of service, and said refrigerating medium bypass is out of service, and refrigerating medium circulates in said refrigerating medium major loop.
In the described handpiece Water Chilling Units of the utility model; Said handpiece Water Chilling Units also comprises second temperature sensor that is used to obtain dry and cold device inlet temperature; And the three-temperature sensor that is used to obtain outdoor environment temperature, said control module is controlled said handpiece Water Chilling Units according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature and between said transition season pattern and winter mode, is switched.
In the described handpiece Water Chilling Units of the utility model, when the temperature difference of dry and cold device inlet temperature and outdoor environment temperature was spent more than or equal to 5 degree and smaller or equal to 15, said handpiece Water Chilling Units switched to the transition season pattern; When the temperature difference of dry and cold device inlet temperature and outdoor environment temperature was spent greater than 15, said handpiece Water Chilling Units switched to winter mode.
In the described handpiece Water Chilling Units of the utility model, said dry and cold device comprises cooling fan, and said cooling fan is a frequency conversion fan, and when being in winter mode, the output percentage of said cooling fan is regulated according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature
In the described handpiece Water Chilling Units of the utility model; Said handpiece Water Chilling Units also has a summer mode; When being in said summer mode, said refrigerant loop operation, said refrigerating medium major loop breaks off; Said refrigerating medium bypass constitutes the first refrigerating medium minor loop with said dry and cold device under the control of said control valve; The refrigerating medium that is flowed out by said dry and cold device flows back to dry and cold device after said evaporimeter, said refrigerating medium heat absorption heat exchanger and said evaporimeter constitute the second refrigerating medium minor loop, and the refrigerating medium that is flowed out by said refrigerating medium heat absorption heat exchanger flows back to refrigerating medium heat absorption heat exchanger through evaporimeter.
In the described handpiece Water Chilling Units of the utility model; Said handpiece Water Chilling Units also comprises second temperature sensor that is used to obtain dry and cold device inlet temperature; And the three-temperature sensor that is used to obtain outdoor environment temperature, said control module is controlled said handpiece Water Chilling Units according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature and between said transition season pattern and summer mode, is switched.
In the described handpiece Water Chilling Units of the utility model, when the temperature difference of dry and cold device inlet temperature and outdoor environment temperature was spent more than or equal to 5 degree and smaller or equal to 15, said handpiece Water Chilling Units switched to the transition season pattern; When the temperature difference of dry and cold device inlet temperature and outdoor environment temperature was spent less than 5, said handpiece Water Chilling Units switched to summer mode.
In the described handpiece Water Chilling Units of the utility model, said handpiece Water Chilling Units also has winter mode and summer mode,
When being in said winter mode, said refrigerant loop is out of service, and said refrigerating medium bypass is out of service, and refrigerating medium circulates in said refrigerating medium major loop;
When being in said summer mode; Said refrigerant loop operation; Said refrigerating medium major loop breaks off, and said refrigerating medium bypass constitutes the first refrigerating medium minor loop with said dry and cold device under the control of said control valve, and the refrigerating medium that is flowed out by said dry and cold device flows back to dry and cold device after said evaporimeter; Said refrigerating medium heat absorption heat exchanger and said evaporimeter constitute the second refrigerating medium minor loop, and the refrigerating medium that is flowed out by said refrigerating medium heat absorption heat exchanger flows back to refrigerating medium heat absorption heat exchanger through evaporimeter;
Said handpiece Water Chilling Units also comprises second temperature sensor that is used to obtain dry and cold device inlet temperature; And the three-temperature sensor that is used to obtain outdoor environment temperature, said control module is controlled said handpiece Water Chilling Units according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature and between said transition season pattern, winter mode and summer mode, is switched.
Implement the handpiece Water Chilling Units of the utility model, have following beneficial effect: the handpiece Water Chilling Units of the utility model can make full use of outdoor environment as low-temperature receiver, can reduce the output of compressor, has good energy-saving effect, can satisfy the requirement of long-term refrigeration.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the systematic schematic diagram of first embodiment of the handpiece Water Chilling Units of the utility model;
Fig. 2 is the systematic schematic diagram of first embodiment of the handpiece Water Chilling Units of the utility model when operating in winter mode;
Fig. 3 is the systematic schematic diagram of first embodiment of the handpiece Water Chilling Units of the utility model when operating in the transition season pattern;
Fig. 4 is the systematic schematic diagram of first embodiment of the handpiece Water Chilling Units of the utility model when operating in summer mode;
Fig. 5 is the systematic schematic diagram of second embodiment of the handpiece Water Chilling Units of the utility model.
The specific embodiment
The handpiece Water Chilling Units of the utility model is suitable for various application scenarios such as computer floor, medical treatment, food production, operating room, medicine manufacturing, Chemical Manufacture.The handpiece Water Chilling Units of the utility model comprises a refrigerating medium major loop and a refrigerant loop, and wherein the refrigerating medium major loop comprises dry and cold device, refrigerating medium heat absorption heat exchanger, first booster pump and the plurality of control valves by the series connection of refrigerating medium pipeline; Refrigerant loop comprises that then wherein evaporimeter and condenser are the heat exchanger that goes with each other all the time by compressor, evaporimeter, expansion valve and the condenser of refrigerant lines series connection, and it all comprises a coolant channel and a refrigerating medium passage separately; When cold-producing medium and refrigerating medium flow therein; Can carry out heat exchange, wherein, in evaporimeter; The cold-producing medium swelling heat absorption can cool off refrigerating medium; In condenser, cold-producing medium then can be cooled off by refrigerating medium, and dry and cold device then utilizes external environment condition that refrigerating medium is cooled off.The handpiece Water Chilling Units of the utility model also comprises a refrigerating medium bypass; The refrigerating medium path of the condenser of refrigerant loop is connected in this refrigerating medium bypass; Also be provided with second booster pump in this refrigerating medium bypass; The refrigerating medium bypass links to each other with the refrigerating medium major loop, through the cooperation of pipeline, plurality of control valves and handpiece Water Chilling Units control module, makes this water chilling unit system have the transition season pattern at least.
When being in the transition season pattern, refrigerant loop also is in running status, and the refrigerating medium bypass is opened; Bypass mixes with another part refrigerating medium a part in the refrigerating medium that is flowed out by refrigerating medium heat absorption heat exchanger then through refrigerating medium earlier, in condenser, carries out heat exchange, heat absorption back temperature rising with the cold-producing medium of high temperature through that part of refrigerating medium of refrigerating medium bypass; This part refrigerating medium raises the bulk temperature of refrigerating medium, on the one hand with after another part refrigerating medium mixes; Heightened the temperature difference of dry and cold device inlet temperature and outdoor environment temperature; Improve the heat of dry and cold device, because refrigerating medium cools off the cold-producing medium in the evaporimeter, can improve the efficient of refrigerant loop compressor on the other hand; Reduce the output of compressor; This pattern has effectively reduced the output of compressor through utilizing the dual heat exchange of refrigerating medium circulation and cold-producing medium circulation, has improved energy saving.
When this handpiece Water Chilling Units can also have a winter mode, when being in winter mode, because outdoor environment temperature is lower; The temperature difference of dry and cold device inlet temperature and outdoor environment is bigger, can utilize outdoor environment directly refrigerating medium to be cooled off, and this moment, refrigerant loop quit work; The refrigerating medium bypass is out of service, and refrigerating medium circulates in the refrigerating medium major loop, and the higher refrigerating medium of temperature that is flowed out by refrigerating medium heat absorption heat exchanger flow in the dry and cold device through pipeline; In dry and cold device, reduced by cold wind cooling back temperature; Pass back into refrigerating medium heat absorption heat exchanger and indoor environment then and carry out heat exchange, take away the heat of indoor environment, indoor temperature is reduced.The temperature difference of dry and cold device inlet temperature and outdoor environment temperature is big more, the amount of heat exchange just big more, and refrigeration is obvious more.This pattern is utilized the external environment condition refrigeration fully, and refrigerant loop is out of service, and energy-saving effect is obvious.
When this handpiece Water Chilling Units can also have a summer mode, when being in summer mode, this moment, outdoor environment temperature was higher; The temperature difference of dry and cold device inlet temperature and outdoor environment temperature is less; At this moment, the refrigerating medium major loop breaks off, and the refrigerating medium bypass constitutes the first refrigerating medium minor loop with dry and cold device under the control of control valve; The part refrigerating medium circulates in this first refrigerating medium minor loop; Be used for the cold-producing medium of condenser is cooled off, reduce condensation temperature and condensing pressure, reduce the output of compressor with this; Refrigerating medium heat absorption heat exchanger then constitutes the second refrigerating medium minor loop with evaporimeter, and the refrigerating medium that is flowed out by refrigerating medium heat absorption heat exchanger is back to the refrigerating medium heat exchanger that absorbs heat after the refrigerating medium passage of evaporimeter is by refrigerant cools.If the load of refrigerating medium heat radiator device rises, cause the temperature difference of dry and cold device inlet temperature and outdoor environment temperature too high, when reaching switching condition, then handpiece Water Chilling Units can switch to the transition season mode operation.
It will be appreciated that; The handpiece Water Chilling Units of the utility model can be as required; According to the outdoor temperature of applied environment, can only have a transition season pattern, also can have transition season pattern and winter mode; Perhaps have transition season pattern and summer mode; Can also have transition season pattern, summer mode and winter mode, when having two or more patterns, the switching between the pattern is to switch according to the temperature difference of dry and cold device inlet temperature and outdoor temperature; When the temperature difference of dry and cold device inlet temperature and outdoor temperature reached preset value, control module waited the operational mode of switching handpiece Water Chilling Units through control control valve, booster pump and compressor.
More than the operation principle of the handpiece Water Chilling Units of the utility model has been carried out detailed elaboration; On the basis of understanding above-mentioned principle and the purport that does not break away from the utility model, can build various water chilling unit systems, the scope that these handpiece Water Chilling Units that all belong to the utility model are protected.
Understand for technical characterictic, purpose and effect to the utility model have more clearly, the embodiment that showed a concrete handpiece Water Chilling Units specifies.
As shown in Figure 1, be one first embodiment of the handpiece Water Chilling Units of the utility model.This handpiece Water Chilling Units comprises a refrigerating medium major loop and a refrigerant loop, and wherein this refrigerating medium major loop can comprise dry and cold device 1, refrigerating medium heat absorption heat exchanger 2, first booster pump 31 and the control valve by the series connection of refrigerating medium pipeline; This refrigerant loop can comprise compressor 4, evaporimeter 5, expansion valve 6 and the condenser 7 by refrigerant lines 301 series connection.This handpiece Water Chilling Units also comprises a refrigerating medium bypass, and this refrigerating medium bypass links to each other with the refrigerating medium major loop, is provided with second booster pump 32 in the refrigerating medium bypass; Evaporimeter 5 in the refrigerant loop has refrigerant passage and refrigerating medium path, and the refrigerating medium path of evaporimeter 5 is connected in the refrigerating medium major loop; Condenser 7 also has refrigerant passage and refrigerating medium path, and the refrigerating medium path of condenser 7 is connected in the refrigerating medium bypass.
In the refrigerating medium major loop, the refrigerating medium pipeline can comprise the absorb heat entrance side refrigerating medium pipeline 303 of heat exchanger entrance 22 of outlet side refrigerating medium pipeline 302 and the refrigerating medium that is connected dry and cold device outlet 12 and the refrigerating medium heat absorption heat exchanger 2 of dry and cold device 1 of the refrigerating medium heat absorption heat exchanger exit 21 of the dry and cold device inlet 11 that connects dry and cold device 1 and refrigerating medium heat absorption heat exchanger 2.Control valve then can comprise first triple valve 81 and two-port valve 9 that is connected on the outlet side refrigerating medium pipeline 302; Wherein first triple valve 81 is positioned at the upper reaches of two-port valve 9; First interface 811 of first triple valve 81 and second interface 812 insert outlet side refrigerating medium pipeline 302, and first interface 811 is positioned at the upper reaches of second interface 812; Control valve also can comprise second triple valve 82 that is connected on the entrance side refrigerating medium pipeline 303; This second triple valve 82 is positioned at the upper reaches of evaporimeter 5; First interface 821 of second triple valve 82 and second interface 822 insert entrance side refrigerating medium pipeline 303, and first interface 821 is positioned at the upper reaches of second interface 822.First booster pump 31 in the cold-producing medium major loop and the refrigerating medium path of evaporimeter 5 can insert on entrance side refrigerating medium pipeline 303, and first booster pump 31 is positioned at the upper reaches of evaporimeter 5.
The refrigerating medium bypass comprises refrigerating medium by-pass line 304 and the refrigerating medium path that is connected into the condenser 7 of refrigerating medium by-pass line 304.Outlet side refrigerating medium pipeline 302 is provided with first access point 201 and second access point 202; First access point 201 and second access point 202 can be three-way connections; Wherein, first access point 201 is positioned at the downstream of two-port valve 9, and second access point 202 is between first triple valve 81 and two-port valve 9; First end of refrigerating medium bypass is connected with first access point 201, and second end can be connected with second access point 202 through pipeline 305, and second end of this refrigerating medium bypass also is connected with the 3rd interface 823 of second triple valve 82.On entrance side refrigerating medium pipeline 303, be provided with the 3rd access point 203; The 3rd interface 813 of first triple valve 81 is connected through pipeline 306 with the 3rd access point 203; The 3rd access point 203 is between the refrigerating medium path of second triple valve 82 and evaporimeter 5; The 3rd access point 203 is positioned at the upper reaches of first booster pump 31, and second access point 203 can be a three-way connection.
This handpiece Water Chilling Units can be switched between three kinds of operational modes, and three kinds of operational modes are respectively winter mode, transition season pattern, summer mode.Fig. 2 and Fig. 4 show the sketch map of these three kinds of patterns respectively, and arrow shows cold-producing medium and refrigerating medium at intrasystem flow direction among the figure.
In the present embodiment, the switching of three kinds of patterns is that temperature extent according to dry and cold device inlet temperature and outdoor environment temperature switches.In order to make the handpiece Water Chilling Units running status that can automatically switch; Further; Handpiece Water Chilling Units also can comprise the control module that is used to control the handpiece Water Chilling Units operation, the control module that control module can be used always, for example microprocessor, single-chip microcomputer, programmable logic device or the like; First triple valve 81, second triple valve 82 and said two-port valve 9 are electrically-controlled valve, can be controlled by control module.This handpiece Water Chilling Units also comprises second temperature sensor that is used to obtain dry and cold device inlet temperature; And the three-temperature sensor that is used to obtain outdoor environment temperature; Second temperature sensor and three-temperature sensor are electrically connected with control module respectively, and control module is switched between pattern, transition season pattern and the summer mode according to this handpiece Water Chilling Units of temperature difference control of dry and cold device inlet temperature and outdoor environment temperature in the winter time.
As shown in Figure 2, when the temperature difference of dry and cold device inlet temperature and outdoor environment temperature was spent greater than 15, control module switched to winter mode with handpiece Water Chilling Units; At this moment, refrigerant loop is out of service, and compressor 4 is shut down; Thereby second booster pump 32 in the refrigerating medium bypass is shut down and is made the refrigerating medium bypass out of service, first interface 811 of first triple valve 81 and 812 conductings of second interface, and the 3rd interface 813 of first triple valve 81 is closed; First interface 821 of second triple valve 82 and 822 conductings of second interface, the 3rd interface 823 of second triple valve 82 is closed, and two-port valve 9 is opened; First booster pump 31 starts, and refrigerating medium circulates in the refrigerating medium major loop, and refrigerating medium temperature after refrigerating medium heat absorption heat exchanger 2 carries out heat exchange with indoor environment raises; Flow through first triple valve 81 and two-port valve 9 successively along outlet side refrigerating medium pipeline 302 then; Enter into dry and cold device 1 then, dry and cold device 1 utilizes the cooling of outdoor cold wind, flows through the refrigerating medium passage of second triple valve 82, first booster pump 31 and evaporimeter 5 successively along entrance side refrigerating medium pipeline 303 through cooled refrigerating medium; Flow back into refrigerating medium heat absorption heat exchanger 2 then and carry out heat exchange, so continue circulation.In the present embodiment; Dry and cold device 1 can comprise a cooling fan 10, and this cooling fan 10 is a frequency conversion fan, can be the AC frequency conversion or the EC blower fan that can change output; When being in winter mode; The output percentage of this cooling fan 10 can be regulated according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature, and the temperature difference increases, and then can reduce cooling fan 10 outputs.
As shown in Figure 3, when the temperature difference of dry and cold device inlet temperature and outdoor environment temperature was spent more than or equal to 5 degree and smaller or equal to 15, control module switched to the transition season pattern with handpiece Water Chilling Units; At this moment, the refrigerant loop operation also is that compressor 4 is opened; First interface 811 of first triple valve 81 and 812 conductings of second interface; The 3rd interface 813 of first triple valve 81 is closed, first interface 821 of second triple valve 82 and 822 conductings of second interface, and the 3rd interface 823 of second triple valve 82 is closed; Two-port valve 9 is opened, and first booster pump 31 and second booster pump 32 all start.The refrigerating medium that is flowed out by refrigerating medium heat absorption heat exchanger 2 is divided into two parts after through first triple valve 81; Wherein a part is drawn by second access point 202; And the pipeline 305 of flowing through gets into the refrigerating medium bypass; This part refrigerating medium enters into the refrigerating medium path of condenser 7; Temperature raises after in condenser 7, carrying out heat exchange with the refrigerant vapour of HTHP, and this part refrigerating medium is got back to the refrigerating medium major loop at first access point 201, and another part refrigerating medium directly mixes with the refrigerating medium of a preceding part through behind two-port valve 9 to first access points; Flow through again dry and cold device 1, second triple valve 82, first booster pump 31 and evaporimeter 5 of mixed refrigerating medium flows back in the refrigerating medium heat absorption heat exchanger 2, and refrigerating medium is cooled off by cold-producing medium through evaporator 5 time once more.
In order to improve the efficient of handpiece Water Chilling Units, and farthest utilize outdoor environment, when the transition season pattern; Further, can regulate the aperture of two-port valve 9 according to condensation temperature, this handpiece Water Chilling Units can comprise first temperature sensor of the condensation temperature that is used to obtain condenser 7; During this kind pattern, the aperture of two-port valve 9 is regulated through condensation temperature, and condensation temperature is high more; The aperture of two-port valve is just more little, and the amount that gets into the refrigerating medium of condenser 7 like this increases, and condensing pressure descends; Otherwise then two-port valve 9 apertures increase, thus can be condensation temperature and condensation pressure regulation at ideal range, and the operational efficiency of raising compressor 4.Cooling fan 10 is output as 100% under this pattern, thereby reduces the output of compressor 4 to greatest extent.The output percentage of compressor 4 is regulated according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature, and the temperature difference increases, and the heat of dry and cold device increases, and then reduces the output of compressor.This pattern effectively reduces the output of compressor through utilizing the dual heat exchange of cold-producing medium circulation and refrigerating medium circulation.
As shown in Figure 4, when the temperature difference of dry and cold device inlet temperature and outdoor environment temperature was spent less than 5, control module switched to summer mode with handpiece Water Chilling Units; At this moment; First interface 811 of first triple valve 81 and 813 conductings of the 3rd interface, second interface 812 of first triple valve 81 is closed, first interface 821 of said second triple valve 82 and 823 conductings of the 3rd interface; Second interface 822 of second triple valve 82 is closed, and two-port valve 9 cuts out; The refrigerant loop operation; The refrigerating medium major loop is disconnected; The refrigerating medium bypass constitutes the first refrigerating medium minor loop with dry and cold device 1 under the control of control valve, the refrigerating medium that is flowed out by dry and cold device 1 flows back to dry and cold device 5, the first refrigerating medium minor loops and utilizes refrigerating medium that condenser 7 is cooled off after evaporimeter 5; Refrigerating medium by outdoor environment cooling, flow into then that the refrigerant vapour to HTHP cools off in the condenser in dry and cold device; Refrigerating medium heat absorption heat exchanger 2 constitutes the second refrigerating medium minor loop with evaporimeter 5; The refrigerating medium that is flowed out by refrigerating medium heat absorption heat exchanger 2 flows back to refrigerating medium heat absorption heat exchanger 2 through evaporimeter 5, gets into refrigerating medium heat absorption heat exchanger 2 after refrigerating medium is cooled and carry out heat exchange with indoor environment in evaporimeter 5.Under this kind pattern, condenser 7 utilizes the refrigerating medium of dry and cold device outlet as the low-temperature receiver heat exchange, the circulation of operation compressor cooling; If indoor load rises; Dry and cold device inlet temperature raises, and the temperature difference that causes dry and cold device inlet temperature and outdoor environment temperature then switches to the transition season pattern greater than 5 degree.
It will be appreciated that the handpiece Water Chilling Units among first embodiment also can only operate in the transition season pattern, perhaps between transition season pattern and winter mode, switch, perhaps between transition season pattern and summer mode, switch.
As shown in Figure 5; Systematic schematic diagram for second embodiment of the handpiece Water Chilling Units of the utility model; This handpiece Water Chilling Units comprises a refrigerating medium major loop, and this refrigerating medium major loop comprises by the refrigerating medium passage of the refrigerating medium heat absorption heat exchanger of refrigerating medium pipeline series connection 2, first booster pump 31, two-port valve 91, two-port valve 9, dry and cold device 1, triple valve 81, evaporimeter 5 etc.; This handpiece Water Chilling Units also comprises refrigerant loop, and this refrigerant loop comprises compressor 4, condenser 7, expansion valve 6 and the evaporimeter 5 by the refrigerant lines series connection; This handpiece Water Chilling Units also comprises the refrigerating medium bypass; The refrigerating medium bypass comprises refrigerating medium passage, second booster pump 32 by the condenser 7 of refrigerating medium bypass relation series connection; The upper reaches of refrigerating medium bypass are connected in the refrigerating medium major loop between the two-port valve 91 and two-port valve 9, and the downstream of refrigerating medium bypass are connected between two-port valve 9 and the dry and cold device 1.
This handpiece Water Chilling Units can have transition season pattern and summer mode; The sketch map of this handpiece Water Chilling Units when being in the transition season pattern that be shown in Figure 5; As shown in the figure; When being in the transition season pattern, the interface 811 of triple valve 81 breaks off interface 812 and interface 813 conductings with interface 812 and interface 813; Two- port valve 91,9 is opened; Two-port valve 92 cuts out, and first booster pump 31, second booster pump 32 and compressor 4 are opened, and the refrigerating medium that is flowed out by the refrigerating medium heat absorption heat exchanger exit 21 of refrigerating medium heat absorption heat exchanger 2 is through shunting after first booster pump 31, the two-port valve 91; Wherein a part of refrigerating medium gets into the refrigerating medium bypass and carries out heat exchange through the refrigerating medium path of condenser 7 and the refrigerant vapour of HTHP; Then through second booster pump 32, and flow through another part refrigerating medium that comes through two-port valve 9 and mixes the back and enter into dry and cold device 1 by the refrigerating medium inlet 11 of dry and cold device 1, the refrigerating medium by dry and cold device 1 after dry and cold device 1 cooling exports 12 outflows; Behind the interface 812,813 of triple valve 81, get into evaporimeter 5 again, the refrigerating medium heat absorption heat exchanger entrance 22 entering refrigerating medium heat absorption heat exchangers 2 by refrigerating medium heat absorption heat exchanger 2 after evaporimeter 5 coolings carry out heat exchange with indoor environment.
When being in summer mode, the refrigerating medium path of dry and cold device 1, two-port valve 92, condenser 7, second booster pump 32 constitute the first refrigerating medium minor loop, are used for the refrigerant vapour of the condenser 7 of flowing through is cooled off; The refrigerating medium path of refrigerating medium heat absorption heat exchanger 2, first booster pump 31, triple valve 81, evaporimeter 5 constitutes the second refrigerating medium minor loop, utilizes 5 pairs of refrigerating mediums of evaporimeter to cool off.At this moment, triple valve 81 interfaces 811 and interface 813 conductings, interface 812 breaks off with interface 811 and interface 813, and two- port valve 91,9 cuts out, and two-port valve 92 is opened.
Switching among the switching between the pattern of the handpiece Water Chilling Units of second embodiment and first embodiment between the pattern of handpiece Water Chilling Units is similar, repeats no more.The handpiece Water Chilling Units of second embodiment also can be moved winter mode as required.
It will be appreciated that; The handpiece Water Chilling Units of the utility model is not limited to the structure of above-mentioned specific embodiment; Under the situation of the purport of understanding said structure and the utility model, can make a lot of deformation programs to above-mentioned handpiece Water Chilling Units, these all belong to the protection domain of the utility model.The dry and cold device inlet temperature of the switching condition of the operational mode of the handpiece Water Chilling Units of the utility model and the temperature difference of outdoor environment temperature are not limited to the actual temp among the embodiment, can be preset according to actual conditions.
Because the refrigerating medium of the handpiece Water Chilling Units of the utility model need carry out heat exchange with outdoor environment; In the winter time during pattern; Outdoor environment temperature is lower; Refrigerating medium should be selected subzero refrigerating medium for use, for example can be glycol water, salt solution, aqueous solution of propylene glycol or the like low temperature refrigerating medium commonly used.Cold-producing medium in the utility model can be R134a, R22, R407C, R410A etc.; Condenser can be condensers such as board-like, shell-tube type or bushing type; Evaporimeter can be evaporimeters such as board-like, shell-tube type or bushing type; Expansion valve can be heating power expansion valve, electric expansion valve or capillary etc., and two-port valve can be electric flow control valves such as electrical ball valve, magnetic valve.
In the handpiece Water Chilling Units of the utility model, can have only a transition season pattern, perhaps can be in same system integrated two or three different refrigeration mode.Can utilize the lower refrigerating medium backwater cooling refrigeration agent of temperature at transition season again directly sent into the indoor heat exchange of carrying out by outdoor subcooled refrigerating medium, also can freeze according to conventional Principle of Compressor Refrigeration.The handpiece Water Chilling Units of the utility model can make full use of outdoor environment as low-temperature receiver, can reduce the output of compressor, has good energy-saving effect, can satisfy the requirement of long-term refrigeration.This handpiece Water Chilling Units integrates refrigeration compression system and chilled water system, does not also need external any cold source equipment with respect to the water-cooled handpiece Water Chilling Units, and it is simple, flexible that product engineering is installed.
Combine accompanying drawing that the embodiment of the utility model is described above; But the utility model is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the utility model.
Claims (7)
1. a handpiece Water Chilling Units is characterized in that, comprising:
Refrigerating medium major loop, said refrigerating medium major loop comprise by the dry and cold device (1) of refrigerating medium pipeline series connection, refrigerating medium heat absorption heat exchanger (2), first booster pump (31) and control valve;
Refrigerant loop, said refrigerant loop comprise compressor (4), evaporimeter (5), expansion valve (6) and the condenser (7) by the refrigerant lines series connection;
The refrigerating medium bypass links to each other with said refrigerating medium major loop, is provided with second booster pump (32) in the said refrigerating medium bypass;
Said evaporimeter (5) has refrigerant passage and refrigerating medium path, and the refrigerating medium path of said evaporimeter (5) is connected in the said refrigerating medium major loop;
Said condenser (7) has refrigerant passage and refrigerating medium path, and the refrigerating medium path of said condenser (7) is connected in the said refrigerating medium bypass;
Control module is used to control said handpiece Water Chilling Units operation;
Said handpiece Water Chilling Units has a transition season pattern at least; When being in said transition season pattern; Said refrigerant loop operation; Said refrigerating medium bypass operation, bypass mixes with another part refrigerating medium the part of the refrigerating medium that is flowed out by said refrigerating medium heat absorption heat exchanger (2) then through refrigerating medium, and mixed refrigerating medium flows back to the refrigerating medium heat exchanger (2) that absorbs heat through dry and cold device (1), evaporimeter (5) again.
2. handpiece Water Chilling Units according to claim 1; It is characterized in that; Said handpiece Water Chilling Units comprises first temperature sensor of the condensation temperature that is used to obtain said condenser (7), and when being in the transition season pattern, the refrigerating medium flow of said refrigerating medium bypass is regulated according to said condensation temperature.
3. handpiece Water Chilling Units according to claim 1; It is characterized in that said handpiece Water Chilling Units also comprises second temperature sensor that is used to obtain dry and cold device inlet temperature, and the three-temperature sensor that is used to obtain outdoor environment temperature; Said handpiece Water Chilling Units also has a winter mode; When being in said winter mode, said refrigerant loop is out of service, and said refrigerating medium bypass is out of service; Refrigerating medium circulates in said refrigerating medium major loop, and said control module is controlled said handpiece Water Chilling Units according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature and between said transition season pattern and winter mode, switched.
4. handpiece Water Chilling Units according to claim 3; It is characterized in that; Said dry and cold device (1) comprises cooling fan (10); Said cooling fan (10) is a frequency conversion fan, and when being in winter mode, the output percentage of said cooling fan (10) is regulated according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature.
5. handpiece Water Chilling Units according to claim 1 and 2; It is characterized in that; Said handpiece Water Chilling Units also has a summer mode; When being in said summer mode, said refrigerant loop operation, said refrigerating medium major loop breaks off; Said refrigerating medium bypass constitutes the first refrigerating medium minor loop with said dry and cold device (1) under the control of said control valve; The refrigerating medium that is flowed out by said dry and cold device (1) flows back to dry and cold device (5) afterwards through said evaporimeter (5), and said refrigerating medium heat absorption heat exchanger (2) and said evaporimeter (5) constitute the second refrigerating medium minor loop, and the refrigerating medium that is flowed out by said refrigerating medium heat absorption heat exchanger (2) flows back to refrigerating medium heat absorption heat exchanger (2) through evaporimeter (5).
6. handpiece Water Chilling Units according to claim 5; It is characterized in that; Said handpiece Water Chilling Units also comprises second temperature sensor that is used to obtain dry and cold device inlet temperature; And the three-temperature sensor that is used to obtain outdoor environment temperature, said control module is controlled said handpiece Water Chilling Units according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature and between said transition season pattern and summer mode, is switched.
7. handpiece Water Chilling Units according to claim 1 and 2 is characterized in that said handpiece Water Chilling Units also has winter mode and summer mode,
When being in said winter mode, said refrigerant loop is out of service, and said refrigerating medium bypass is out of service, and refrigerating medium circulates in said refrigerating medium major loop;
When being in said summer mode; Said refrigerant loop operation; Said refrigerating medium major loop breaks off; Said refrigerating medium bypass constitutes the first refrigerating medium minor loop with said dry and cold device (1) under the control of said control valve; The refrigerating medium that is flowed out by said dry and cold device (1) flows back to dry and cold device (5) afterwards through said evaporimeter (5), and said refrigerating medium heat absorption heat exchanger (2) and said evaporimeter (5) constitute the second refrigerating medium minor loop, and the refrigerating medium that is flowed out by said refrigerating medium heat absorption heat exchanger (2) flows back to refrigerating medium heat absorption heat exchanger (2) through evaporimeter (5);
Said handpiece Water Chilling Units also comprises second temperature sensor that is used to obtain dry and cold device inlet temperature; And the three-temperature sensor that is used to obtain outdoor environment temperature, said control module is controlled said handpiece Water Chilling Units according to the temperature difference of dry and cold device inlet temperature and outdoor environment temperature and between said transition season pattern, winter mode and summer mode, is switched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203770490U CN202485266U (en) | 2011-09-29 | 2011-09-29 | Water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203770490U CN202485266U (en) | 2011-09-29 | 2011-09-29 | Water chilling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485266U true CN202485266U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203770490U Expired - Lifetime CN202485266U (en) | 2011-09-29 | 2011-09-29 | Water chilling unit |
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| Country | Link |
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| CN (1) | CN202485266U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032980A (en) * | 2011-09-29 | 2013-04-10 | 艾默生网络能源有限公司 | Water chilling unit |
| CN107062668A (en) * | 2017-03-09 | 2017-08-18 | 深圳市艾特网能技术有限公司 | Cooling cycle system and its refrigerating method |
| CN108151377A (en) * | 2017-12-22 | 2018-06-12 | 台州龙江化工机械科技有限公司 | The refrigeration system that a kind of anti-liquid hammer occurs |
| CN113133277A (en) * | 2021-03-08 | 2021-07-16 | 烽火通信科技股份有限公司 | Temperature control method and adjusting system of container data center |
| CN113483451A (en) * | 2021-07-12 | 2021-10-08 | 珠海格力电器股份有限公司 | Control method and module for air conditioner operation, air conditioner and computer storage medium |
| CN113818934A (en) * | 2021-10-19 | 2021-12-21 | 普泛能源技术研究院(北京)有限公司 | Adjustable combined cooling and power system and process and operation method thereof |
-
2011
- 2011-09-29 CN CN2011203770490U patent/CN202485266U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032980A (en) * | 2011-09-29 | 2013-04-10 | 艾默生网络能源有限公司 | Water chilling unit |
| CN103032980B (en) * | 2011-09-29 | 2016-01-06 | 艾默生网络能源有限公司 | A kind of handpiece Water Chilling Units |
| CN107062668A (en) * | 2017-03-09 | 2017-08-18 | 深圳市艾特网能技术有限公司 | Cooling cycle system and its refrigerating method |
| CN107062668B (en) * | 2017-03-09 | 2022-06-07 | 深圳市艾特网能技术有限公司 | Refrigeration cycle system and refrigeration method thereof |
| CN108151377A (en) * | 2017-12-22 | 2018-06-12 | 台州龙江化工机械科技有限公司 | The refrigeration system that a kind of anti-liquid hammer occurs |
| CN108151377B (en) * | 2017-12-22 | 2021-03-02 | 台州龙江化工机械科技有限公司 | Refrigerating system capable of preventing liquid hammer from occurring |
| CN113133277A (en) * | 2021-03-08 | 2021-07-16 | 烽火通信科技股份有限公司 | Temperature control method and adjusting system of container data center |
| CN113483451A (en) * | 2021-07-12 | 2021-10-08 | 珠海格力电器股份有限公司 | Control method and module for air conditioner operation, air conditioner and computer storage medium |
| CN113818934A (en) * | 2021-10-19 | 2021-12-21 | 普泛能源技术研究院(北京)有限公司 | Adjustable combined cooling and power system and process and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park B2 building 1-4 floor, building 6-10 Patentee after: Vitamin Technology Co., Ltd. Address before: 518057 Nanshan District science and Technology Industrial Park, Guangdong, Shenzhen Branch Road, No. Patentee before: Aimosheng Network Energy Source Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |