CN204478571U - Refrigeration unit and free cooling system thereof - Google Patents
Refrigeration unit and free cooling system thereof Download PDFInfo
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- CN204478571U CN204478571U CN201520113265.2U CN201520113265U CN204478571U CN 204478571 U CN204478571 U CN 204478571U CN 201520113265 U CN201520113265 U CN 201520113265U CN 204478571 U CN204478571 U CN 204478571U
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Abstract
The purpose of this utility model is to provide a kind of refrigeration unit and free cooling system thereof, and freely cooling wherein improves refrigerating capacity by means of air driven pump.For realizing the free cooling system of the refrigeration unit of described object, be characterized in the compressor arranged in refrigerant loop, condenser, evaporimeter and air driven pump, described condenser installation site is higher than described air driven pump, described air driven pump connects the gas side of described compressor respectively by pipeline, the hydraulic fluid side of described condenser, the hydraulic fluid side of described evaporimeter, so that introduce described compressor export a part of gas to drive described air driven pump, and the refrigerant liquid that described condenser exports is pumped into described evaporimeter, the gas side of described evaporimeter is connected with the gas side of described condenser, so that at least part of refrigerant gas that described evaporimeter exports enters into described condenser carry out condensation.
Description
Technical field
The utility model relates to refrigeration unit, particularly relates to the refrigeration unit with free refrigerating function.
Background technology
Time refrigeration unit carries out freezing in the winter time, environment temperature is lower, can carry out free cooling, adopts Action of Gravity Field to carry out heat pipe principle refrigeration; Also fluorine pump can be adopted to carry out circulate liquid refrigerant refrigeration.The free cooling scheme of Action of Gravity Field is adopted to have certain limitation, because refrigerating capacity is fewer.And the free cooling scheme adopting fluorine pump to freeze, its amount of cooling water is large, but the price of fluorine pump is high, must ensure net positive suction head, otherwise fluorine pump easily damages.
Utility model content
The purpose of this utility model is to provide a kind of refrigeration unit and free cooling system thereof, and freely cooling wherein improves refrigerating capacity by means of air driven pump.
For realizing the free cooling system of the refrigeration unit of described object, be characterized in the compressor arranged in refrigerant loop, condenser, evaporimeter and air driven pump, described condenser installation site is higher than described air driven pump, described air driven pump connects the gas side of described compressor respectively by pipeline, the hydraulic fluid side of described condenser, the hydraulic fluid side of described evaporimeter, so that introduce described compressor export a part of gas to drive described air driven pump, and the refrigerant liquid that described condenser exports is pumped into described evaporimeter, the gas side of described evaporimeter is connected with the gas side of described condenser, so that at least part of refrigerant gas that described evaporimeter exports enters into described condenser carry out condensation.
Described free cooling system, its further feature is that at least two described air driven pumps are parallel in described free cooling system.
Described free cooling system, its further feature be described air driven pump and described condenser hydraulic fluid side between pipeline in be provided with cold-producing medium surge tank.
Described free cooling system, its further feature be described air driven pump also by band valve pipeline be connected with the pipeline of the gas side of described evaporimeter so that described air driven pump introduce described condenser output refrigerant liquid time Exhaust Gas.
For the refrigeration unit realizing described object comprises by compressor, first condenser, the compression-type refrigerating system that expansion valve and the first evaporimeter are formed, be characterized in also comprising free cooling system, this free cooling system comprises the second condenser, second evaporimeter and air driven pump, described second condenser installation site is higher than described air driven pump, described air driven pump connects the gas side of described compressor respectively by pipeline, the hydraulic fluid side of described second condenser, the hydraulic fluid side of described second evaporimeter, so that introduce described compressor export a part of gas to drive described air driven pump, and the refrigerant liquid that described second condenser exports is pumped into described second evaporimeter, the gas side of described second evaporimeter is connected with the gas side of described second condenser, so that at least part of refrigerant gas that described second evaporimeter exports enters into described second condenser carry out condensation.
Described refrigeration unit, its further feature is, described first condenser and described second condenser parallel connection, and, pipeline between described first condenser and described second condenser-air side is provided with magnetic valve, and pipeline is provided with check valve between hydraulic fluid side, can enter into described first condenser respectively to make the refrigerant gas sprayed from described compressor and described second condenser carries out condensation, and the refrigerant liquid physical efficiency that described first condenser and described second condenser hydraulic fluid side export is collected in described compression-type refrigerating system.
Described refrigeration unit, its further feature is, described first evaporimeter and described second evaporimeter are the evaporimeter of same evaporimeter or parallel connection, the pipeline of described expansion valve low-pressure side and the pipeline of described air driven pump outlet side collect and are connected to the hydraulic fluid side of described first evaporimeter and described second evaporimeter, the pipeline of described air driven pump outlet side is provided with check valve, to make refrigerant liquid one-way flow to described first evaporimeter and described second evaporimeter, the gas side of described first evaporimeter and described second evaporimeter is by pipeline and described second condenser, described compressor connects respectively, described compressor is flowed into make a refrigerant gas energy part for output, a part flows into described second condenser.
Described refrigeration unit, its further feature is, at least two described air driven pumps are parallel in described free cooling system.
Described refrigeration unit, its further feature is provided with cold-producing medium surge tank in the pipeline between the hydraulic fluid side of described air driven pump and described condenser.
Described refrigeration unit, its further feature is, described air driven pump also by band valve pipeline be connected with the pipeline of the gas side of described evaporimeter so that described air driven pump introduce described condenser output refrigerant liquid time Exhaust Gas.
The utility model introduces by air driven pump the Partial shrinkage gas of compressor to promote free cooling refrigeration refrigerating capacity as power, and refrigerating capacity is comparatively large, there is not the high problem of price relative to fluorine pump, is also not easy to damage.The system of this organic assembling, can meet the demand of different refrigerating capacity.The cold freely cooled is limited to environment temperature and water temperature, and under the gentle water temperature condition of a fixed ring, the refrigerating capacity freely cooled remains unchanged substantially, can regulate overall refrigerating effect by the rotating speed of variable compression machine or number of units.Along with the rising of environment temperature, the refrigerating capacity freely cooled declines, and can increase refrigerating capacity, to ensure overall refrigerating effect demand by the displacement increasing compression condensation side.
Accompanying drawing explanation
The above and other feature of the present utility model, character and advantage become more obvious by passing through below in conjunction with the description of drawings and Examples, wherein:
Fig. 1 is the system schematic of cold-producing medium unit in the utility model embodiment 1.
Fig. 2 is the system schematic of cold-producing medium unit in the utility model embodiment 2.
Fig. 3 is the system schematic of cold-producing medium unit in the utility model embodiment 3.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail; set forth more details in the following description so that fully understand the utility model; but the utility model obviously can be implemented with multiple this alternate manner described that is different from; those skilled in the art when doing similar popularization, deduction without prejudice to when the utility model intension according to practical situations, therefore can should not limit protection domain of the present utility model with the content of this specific embodiment.
As shown in Figure 1, the refrigerant loop of refrigeration unit comprises compressor 1, first condenser 21, expansion valve 3, evaporimeter 4, compressor 1, first condenser 21, expansion valve 3 and evaporimeter 4 run in compression-type refrigeration mode, namely the refrigerant gas of high-temperature low-pressure is compressed into the refrigerant gas of HTHP through compressor 1, the refrigerant liquid of cryogenic high pressure is condensed into again through the first condenser 21, the refrigerant liquid of low-temp low-pressure is called again after expansion valve 3 throttling, the refrigerant gas of high-temperature low-pressure is called again after evaporimeter 4 evaporates, finally circulate turning back to compressor 1.
Refrigerant loop also comprises the free cooling system that can operate according to free refrigerating mode, this free cooling system comprise four the second condensers 22, air driven pump 5, evaporimeter 4, second condenser 22 quantity also can be one.The structure of air driven pump 5 can be that known mode is run, it is using Compressed Gas as power source, the flow direction of Compressed Gas is controlled by distribution reversing arrangement, Compressed Gas drives cylinder piston motion, the function of straight line outputting reciprocating linear movement, distribution reversing arrangement includes but not limited to it is the flow direction that air operated reversing valve controls Compressed Gas, another kind of is adopt mechanical reversing mechanism to control Compressed Gas to flow to, about the structure of air driven pump, operation principle can referring to patent document CN103244370, or other technologies document.In the embodiment shown in the drawings, the driving side of air driven pump 5 connects the ejection side of a compressor 1 by pipeline, introduce the partial high pressure gas of this compressor 1 as driving source of the gas, introduce in the pipeline of Compressed Gas and magnetic valve 232 is set, magnetic valve 232 can a direct-open under the free refrigerating mode of refrigeration unit, can open off and on, namely the refrigerant liquid waiting in the second condenser 22 run up to a certain amount of after open again, magnetic valve 232 and other magnetic valves follow-up or aforesaid can by refrigeration unit.The passive side of air driven pump 5 connects the hydraulic fluid side of four the second condensers 22 by pipeline, air driven pump 5 also connects the pipeline of the gas side of evaporimeter 4 by pipeline, magnetic valve 233 is provided with in pipeline, when magnetic valve 233 cuts out, can until refrigerant liquid store in condenser 22 a certain amount of after open again turn back to the second condenser 22 so that at least part of Compressed Gas discharged.Its operation principle is that refrigerant liquid flashes at refrigerant gas in evaporimeter 4, refrigerant gas enters into the second condenser 22 again, refrigerant liquid is condensed in the second condenser 22, refrigerant liquid drops into the passive side of air driven pump 5 by means of gravity, the refrigerant gas that the driving side of air driven pump 5 introduces compression from the ejection side of a compressor 1 drives air driven pump 5, thus the refrigerant liquid in air driven pump 5 is pumped into evaporimeter 4, refrigerant liquid again flashes to refrigerant gas in evaporimeter 4.
In the embodiment shown in fig. 1, compression-type refrigeration and the free type of cooling are carried out simultaneously, the refrigerant liquid through check valve 242 that refrigerant liquid after expansion valve 3 throttling and air driven pump 5 export is pooled to the hydraulic fluid side of evaporimeter 4, a gas part of discharging from evaporimeter 4 gas side is sucked by compressor 1, and a part enters into the second condenser 22 according to aforementioned manner and carries out condensation.
Continue with reference to Fig. 1, the controller of refrigeration unit can be arranged to magnetic valve 231 and open, magnetic valve 233, 234, 232 close, namely compression refrigeration pattern is opened, now, first condenser 21 and four the second condensers 22 are arranged in parallel in refrigerant loop, expansion valve 3 is flowed to through their condensed refrigerant liquids, now whole refrigerant loop runs according to the principle of known compression-type refrigeration, in this running, due to the effect of check valve 243, the cold-producing medium of HTHP can not spray rear directly to flow towards evaporimeter 4 direction from compressor 1, similarly, due to the effect of check valve 242, refrigerant liquid can not enter into air driven pump 5 after expansion valve 3 throttling.Compression refrigeration pattern is opened when outdoor temperature can not be starkly lower than user's water temperature usually, such as, open compression refrigeration pattern in summer.In the usual machine disposed in the interior of evaporimeter 4, in first condenser 21 and the second condenser 22 machine disposed in the outdoor, evaporimeter 4 can select flooded evaporator or downward film evaporator, user's water may be used for cooling some electro-heat equipments, except as shown in Figure 1, the heat exchange with outside object of evaporimeter 4 is outside user's water, can also be gas, be such as room air, the embodiment namely shown in Fig. 1 is also applicable to straight swollen system.
First, second not special implication physically in first condenser 21 and the second condenser 22, mainly for convenience of description, is differentiated.In other embodiments of the present utility model, the quantity of the first condenser 21 can be unnecessary one, the quantity of the second condenser 22 can be one or unnecessary one, the quantity of compressor 1 can be at least one, compressor can select compressor or the multi-machine parallel connection scheme of varying capacity, when adopting multi-machine parallel connection, according to actual conditions apolegamy compressor combination.When adopting variable speed compressor, speed governing can be carried out according to actual conditions.Time environment temperature is low, the slow-speed of revolution is simultaneously mainly through free cooling refrigeration.Time environment temperature is slightly low, middling speed is run, and a part of load is by free cooling refrigeration.The quantity of evaporimeter 4 also can be not limited to be one.In certain embodiments, under the free refrigerating mode of refrigeration unit, the refrigerant gas that partial vaporiser 4 exports all can enter into the second condenser 22.
Continue with reference to Fig. 1, the controller of refrigeration unit can be arranged to magnetic valve 231 and cut out, magnetic valve 233 is opened when the second condenser 22 exports refrigerant liquid, magnetic valve 232 needs to open during work at air driven pump 5, magnetic valve 234 is opened when air driven pump needs Exhaust Gas, namely opens free refrigerating mode.Now compression-type refrigeration carries out with freely cooling simultaneously, and most condenser participates in free cooling, and the outdoor environment temperature opening free refrigerating mode is starkly lower than user's water.
Fig. 2 shows another embodiment of the present utility model, and the present embodiment continues to use element numbers and the partial content of previous embodiment, wherein adopts identical label to represent identical or approximate element, and optionally eliminates the explanation of constructed content.Explanation about clipped can refer to previous embodiment, and it is no longer repeated for the present embodiment.
In the embodiment shown in Figure 2, in order to keep continuous service, two air driven pumps are arranged in parallel, the master end of air driven pump 51,52 is connected with the jet side of a compressor 1 respectively, source of the gas is driven to introduce, the passive side of air driven pump 51,52 is respectively by the hydraulic fluid side of being with the pipeline of check valve 242A, 242B to be connected to evaporimeter 4, and the exhaust outlet of air driven pump 51,52 is connected respectively to the pipeline of the gas side of evaporimeter 4 by magnetic valve 234A, 234B.One in air driven pump 51,52 be in introduce Compressed Gas pump refrigerant liquid time, another is in the refrigerant liquid fallen into by gravity that reception second condenser 22 exports, or otherwise the two runs, like this, the two constantly replaces, and evaporimeter 4 just can receive the refrigerant liquid that the free type of cooling obtains continuously.
Fig. 3 shows another embodiment of the present utility model, and the present embodiment continues to use element numbers and the partial content of previous embodiment, wherein adopts identical label to represent identical or approximate element, and optionally eliminates the explanation of constructed content.Explanation about clipped can refer to previous embodiment, and it is no longer repeated for the present embodiment.
In the embodiment shown in fig. 3, cold-producing medium surge tank 7 is added in pipeline between air driven pump 5 and the second condenser 22, this situation is particularly suitable for evaporimeter 4 and selects plate to change the situation with dry evaporator, can avoid the uneven adverse effect brought of refrigerant flow.
Although the utility model with preferred embodiment openly as above, but it is not for limiting the utility model, any those skilled in the art are not departing from spirit and scope of the present utility model, possible variation and amendment can be made, such as in certain embodiments, the pipeline with magnetic valve 234 of exhaust can omit, and the compression refrigerant gas driven may cooled dose of condenses be liquid in driving process.Unless otherwise defined, otherwise all technical terms used herein have understood identical implication usual with those of ordinary skill in the art.Ad hoc approach, device and material are described in subject application, but with method described herein and material type like or any method of equivalence and material can use in the practice of this technology.Although quite in detail and by illustrating the embodiment of description technique, described explanation only for being expressly understood, and is not intended to limit.Use various term in the de-scription to pass on the understanding to this technology, should be understood that the implication of described various term extends to the common languages of various term or grammatical variants or form.Also should be understood that when term be finger device or equipment time, described term or name are referred to as the example in the present age and provide, and this technical step is by the restriction of described literal scope.The term introduced in previous embodiment will be understood to by contemporary term description now, and the term introduced in described previous embodiment reasonably can be interpreted as the derivative of the system subset name that contemporary term or contemporary term comprise.Further, although for facilitating the understanding provided technology, such as, about air driven pump, although introduce the explanation of ripe technology, but still be in development, as long as but for the air driven pump introducing compressed gas-driven, the scope of claims is not by the restriction of described development.In addition, when not departing from the scope of disclosed technology, any one or more features of any embodiment of technology can with any one or more other Feature Combinations of arbitrary embodiment of technology.Further, should understand, this technology is not limited to the embodiment of having set forth in order to illustration, but this technology only defines by the fair deciphering of present application for patent appended claims, comprises the equal authenticity of the gamut enjoyed of being had the right by each element of this technology.Therefore, every content not departing from technical solutions of the utility model, any amendment done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all fall within protection domain that the utility model claim defines.
Claims (10)
1. the free cooling system of refrigeration unit, it is characterized in that the compressor arranged in refrigerant loop, condenser, evaporimeter and air driven pump, described condenser installation site is higher than described air driven pump, described air driven pump connects the gas side of described compressor respectively by pipeline, the hydraulic fluid side of described condenser, the hydraulic fluid side of described evaporimeter, so that introduce described compressor export a part of gas to drive described air driven pump, and the refrigerant liquid that described condenser exports is pumped into described evaporimeter, the gas side of described evaporimeter is connected with the gas side of described condenser, so that at least part of refrigerant gas that described evaporimeter exports enters into described condenser carry out condensation.
2. free cooling system as claimed in claim 1, is characterized in that at least two described air driven pumps are parallel in described free cooling system.
3. free cooling system as claimed in claim 1, is provided with cold-producing medium surge tank in the pipeline between the hydraulic fluid side that it is characterized in that described air driven pump and described condenser.
4. free cooling system as claimed in claim 1, it is characterized in that described air driven pump also by band valve pipeline be connected with the pipeline of the gas side of described evaporimeter so that described air driven pump introduce described condenser output refrigerant liquid time Exhaust Gas.
5. refrigeration unit, comprise by compressor, first condenser, the compression-type refrigerating system that expansion valve and the first evaporimeter are formed, characterized by further comprising free cooling system, this free cooling system comprises the second condenser, second evaporimeter and air driven pump, described second condenser installation site is higher than described air driven pump, described air driven pump connects the gas side of described compressor respectively by pipeline, the hydraulic fluid side of described second condenser, the hydraulic fluid side of described second evaporimeter, so that introduce described compressor export a part of gas to drive described air driven pump, and the refrigerant liquid that described second condenser exports is pumped into described second evaporimeter, the gas side of described second evaporimeter is connected with the gas side of described second condenser, so that at least part of refrigerant gas that described second evaporimeter exports enters into described second condenser carry out condensation.
6. refrigeration unit as claimed in claim 5, it is characterized in that, described first condenser and described second condenser parallel connection, and, pipeline between described first condenser and described second condenser-air side is provided with magnetic valve, and pipeline is provided with check valve between hydraulic fluid side, can enter into described first condenser respectively to make the refrigerant gas sprayed from described compressor and described second condenser carries out condensation, and the refrigerant liquid physical efficiency that described first condenser and described second condenser hydraulic fluid side export is collected in described compression-type refrigerating system.
7. refrigeration unit as claimed in claim 5, it is characterized in that, described first evaporimeter and described second evaporimeter are the evaporimeter of same evaporimeter or parallel connection, the pipeline of described expansion valve low-pressure side and the pipeline of described air driven pump outlet side collect and are connected to the hydraulic fluid side of described first evaporimeter and described second evaporimeter, the pipeline of described air driven pump outlet side is provided with check valve, to make refrigerant liquid one-way flow to described first evaporimeter and described second evaporimeter, the gas side of described first evaporimeter and described second evaporimeter is by pipeline and described second condenser, described compressor connects respectively, described compressor is flowed into make a refrigerant gas energy part for output, a part flows into described second condenser.
8. refrigeration unit as claimed in claim 5, is characterized in that at least two described air driven pumps are parallel in described free cooling system.
9. refrigeration unit as claimed in claim 5, is provided with cold-producing medium surge tank in the pipeline between the hydraulic fluid side that it is characterized in that described air driven pump and described condenser.
10. refrigeration unit as claimed in claim 5, is characterized in that described air driven pump is also connected with the pipeline of the gas side of described evaporimeter by the pipeline of band valve, so that Exhaust Gas when the refrigerant liquid of described condenser output introduced by described air driven pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520113265.2U CN204478571U (en) | 2015-02-16 | 2015-02-16 | Refrigeration unit and free cooling system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520113265.2U CN204478571U (en) | 2015-02-16 | 2015-02-16 | Refrigeration unit and free cooling system thereof |
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| CN204478571U true CN204478571U (en) | 2015-07-15 |
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| CN201520113265.2U Active CN204478571U (en) | 2015-02-16 | 2015-02-16 | Refrigeration unit and free cooling system thereof |
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