CN115915705A - Refrigerating system and power equipment - Google Patents

Refrigerating system and power equipment Download PDF

Info

Publication number
CN115915705A
CN115915705A CN202211284863.7A CN202211284863A CN115915705A CN 115915705 A CN115915705 A CN 115915705A CN 202211284863 A CN202211284863 A CN 202211284863A CN 115915705 A CN115915705 A CN 115915705A
Authority
CN
China
Prior art keywords
heat exchanger
heat exchange
exchange tube
working medium
generator
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.)
Pending
Application number
CN202211284863.7A
Other languages
Chinese (zh)
Inventor
宋金良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Digital Power Technologies Co Ltd
Original Assignee
Huawei Digital Power Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Digital Power Technologies Co Ltd filed Critical Huawei Digital Power Technologies Co Ltd
Priority to CN202211284863.7A priority Critical patent/CN115915705A/en
Publication of CN115915705A publication Critical patent/CN115915705A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems

Landscapes

  • Sorption Type Refrigeration Machines (AREA)

Abstract

A refrigeration system comprising: condensation heat exchanger, first ooff valve, evaporation heat exchanger, absorption refrigeration module and compressor. The condensing heat exchanger, the switch valve and the evaporating heat exchanger are connected in sequence through pipelines. The absorption type refrigeration module and the compressor are connected between the condensation heat exchanger and the evaporation heat exchanger. In the circulation loop of the absorption refrigeration module, the condensation heat exchanger, the switch valve and the evaporation heat exchanger, when the absorption refrigeration module cannot produce gaseous working media, the compressor can work. The refrigerating system can realize working medium circulation through the circulating loops of the compressor, the condensing heat exchanger, the switch valve and the evaporating heat exchanger, so that the evaporating heat exchanger can uninterruptedly reduce the temperature of a heating part.

Description

Refrigerating system and power equipment
Technical Field
The invention relates to the technical field of refrigeration, in particular to a refrigeration system and power equipment.
Background
In the existing electric power equipment such as automobiles, outdoor base stations, data centers and the like, heat generating components such as engines, motors, battery modules, integrated circuit boards and the like are generally deployed. As the power equipment operates for a long time, heat generating components inside the power equipment generate a large amount of heat. If the heat of the heating components in the power equipment is timely transferred out, the normal work of the heating components can be influenced, and even potential safety hazards exist. Therefore, how to reduce the temperature of the heat generating components inside the power equipment is a problem that needs to be solved.
Disclosure of Invention
In order to solve the above problem, an embodiment of the present application provides a refrigeration system and an electric power device, an absorption refrigeration module, a condensing heat exchanger, a switching valve, and an evaporating heat exchanger are sequentially communicated through a pipeline to form a closed loop. The compressor, the condensing heat exchanger, the switch valve and the evaporating heat exchanger are communicated in sequence through pipelines to form a closed loop. When the absorption refrigeration module works normally, the evaporation heat exchanger of the refrigeration system refrigerates heat generating components through a circulating loop of the absorption refrigeration module → the condensation heat exchanger → the switch valve → the evaporation heat exchanger. When the absorption type refrigeration module can not work normally, the compressor works. The evaporation heat exchanger of the refrigeration system refrigerates heat generating components through a circulating loop of 'compressor → condensing heat exchanger → switch valve → evaporation heat exchanger', so that the refrigeration system can uninterruptedly refrigerate the heat generating components.
Therefore, the following technical scheme is adopted in the embodiment of the application:
in a first aspect, the present application provides a refrigeration system comprising: the condensing heat exchanger, the first switch valve and the evaporating heat exchanger are sequentially connected through a pipeline, and the condensing heat exchanger is respectively connected to the output end of the absorbing refrigeration module and the output end of the compressor through pipelines and is used for condensing gas working media output by the absorbing refrigeration module and/or the compressor into liquid working media; the evaporation heat exchanger is respectively connected with the input end of the absorption refrigeration module and the input end of the compressor through pipelines and is used for evaporating liquid working media into gaseous working media, inputting the gaseous working media into the absorption refrigeration module and/or the compressor and reducing the temperature of heating components.
In this embodiment, the condensing heat exchanger, the switching valve, and the evaporating heat exchanger are connected in sequence by piping. The absorption type refrigeration module and the compressor are connected between the condensation heat exchanger and the evaporation heat exchanger. In the circulation loop of the absorption refrigeration module, the condensation heat exchanger, the switch valve and the evaporation heat exchanger, when the absorption refrigeration module cannot produce gaseous working media, the compressor can work. The refrigerating system can realize working medium circulation through the circulating loops of the compressor, the condensing heat exchanger, the switch valve and the evaporating heat exchanger, so that the evaporating heat exchanger can uninterruptedly reduce the temperature of a heating part.
In one embodiment, the condensing heat exchanger comprises a first heat exchange tube and a second heat exchange tube, one end of the first heat exchange tube is connected to the first switch valve through a pipeline, and the other end of the first heat exchange tube is connected to the output end of the absorption refrigeration module and the output end of the compressor through a pipeline; and two ends of the second heat exchange tube are connected to the cold source through pipelines.
In one embodiment, the evaporative heat exchanger comprises a third heat exchange tube and a fourth heat exchange tube, one end of the third heat exchange tube is connected to the first switch valve through a pipeline, and the other end of the third heat exchange tube is connected to the input end of the absorption refrigeration module and the input end of the compressor through a pipeline; and two ends of the second heat exchange tube are connected with the heating component through a pipeline.
In one embodiment, the absorption refrigeration module comprises an absorber and a generator, wherein an input end of the absorber is respectively connected to output ends of the evaporation converter and the generator through pipelines, and the absorber is used for enabling a solution with a first concentration input by the generator to absorb a gaseous working medium of the evaporation converter; the output end of the generator is connected to the condensation converter through a pipeline, the input end of the generator is connected to the output end of the generator through a pipeline, the generator is used for heating the solution with the second concentration input by the absorber and outputting the generated gaseous working medium to the condensation converter, and the adsorbent content of the solution with the first concentration is higher than that of the solution with the second concentration.
In this embodiment, the absorber and the generator are connected to each other by piping to form a circulation loop. The high-concentration adsorbent solution in the absorber absorbs the gaseous working medium of the evaporation converter to form low-concentration adsorbent solution. The generator heats the low-concentration adsorbent solution to generate a gaseous working medium and form a high-concentration adsorbent solution. The gaseous working medium generated by the generator is input into the condensation converter, so that the working medium circulation of the circulation loop of the refrigeration system is realized.
In one embodiment, the absorption refrigeration module further comprises an intermediate heat exchanger disposed on the pipeline between the absorber and the generator for transferring heat of the first concentration solution output by the generator to the second concentration solution output by the absorber.
In this embodiment, the intermediate converter exchanges heat between the heated high-concentration sorbent solution output from the generator and the low-concentration sorbent solution input from the generator, and returns the heat output from the generator to the generator, thereby reducing heat loss from the generator.
In one embodiment, the intermediate heat exchanger comprises a fifth heat exchange tube and a sixth heat exchange tube, one end of the fifth heat exchange tube is connected to the output end of the absorber through a pipeline, and the other end of the fifth heat exchange tube is connected to the input end of the generator through a pipeline; one end of the sixth heat exchange tube is connected to the input end of the absorber through a pipeline, and the other end of the sixth heat exchange tube is connected to the output end of the generator through a pipeline.
In one embodiment, the absorption refrigeration module further comprises a pump disposed on a pipeline between the output end of the absorber and the fifth heat exchange tube of the intermediate heat exchanger, for pumping the second concentration solution inside the absorber into the generator.
In this embodiment, a pump is provided in the line between the absorber and the generator. The pump provides power for the solution of the circulation loop of the absorption refrigeration module, and the solution is circulated in the circulation loop of the absorption refrigeration module.
In one embodiment, the absorption refrigeration module further comprises a second switch valve, which is disposed on a pipeline between the sixth heat exchange pipe of the intermediate heat exchanger and the input end of the absorber, and is used for converting the first concentration solution inside the generator into a spray-like first concentration solution.
In this embodiment, an on-off valve is provided in the line between the absorber and the generator. The refrigerating system can adjust the opening degree of the switch valve to enable the liquid high-concentration absorbent solution to form a spray-shaped high-concentration absorbent solution and flow into the absorber. The sprayed high-concentration absorbent solution can better absorb the gaseous working medium.
In one embodiment, the refrigerant inside the absorption refrigeration module is a working medium of the refrigeration system.
In the embodiment, the working medium of the refrigeration system is the same as the refrigerant in the absorption refrigeration module, so that the complexity of the solution in the absorption refrigeration module can be reduced, and the cost of the refrigeration system can be reduced.
In one embodiment, the boiling point of the refrigerant inside the absorption refrigeration module is less than the boiling point of the absorbent inside the absorption refrigeration module.
In the embodiment, the boiling point of the refrigerant inside the absorption refrigeration module is smaller than that of the absorbent, so that the phenomenon that the absorbent volatilizes to cause the pollution of the working medium of the circulation loop of the refrigeration system when the gaseous working medium is generated inside the absorption refrigeration module is avoided.
In one embodiment, the refrigeration system further comprises an exhaust valve, the exhaust valve is disposed on a pipeline between the condensing heat exchanger and the output end of the compressor, and is used for exhausting the gaseous working medium when the pressure of the pipeline between the condensing heat exchanger and the output end of the compressor is greater than a set threshold value.
In this embodiment, a vent valve is provided in the line between the condensing heat exchanger and the output of the compressor. When the compressor outputs a large amount of gaseous working media, the exhaust valve can exhaust part of the gaseous working media, and the damage to a circulation loop caused by overhigh pressure in the circulation loop of the refrigeration system is avoided.
In one embodiment, the working fluid of the refrigeration system is water.
In the embodiment, the working medium in each circulation loop in the refrigeration system adopts water, so that the cost of the refrigeration system can be reduced, and the competitive advantage of the refrigeration system is improved.
In one embodiment, the compressor is a negative pressure compressor.
In a second aspect, an embodiment of the present application provides an electrical device, including: at least one heat-generating component, at least one refrigeration system as in the respective possible implementations of the first aspect, the evaporative heat exchangers of the at least one refrigeration system being respectively connected to the at least one heat-generating component by piping. The power equipment can be equipment such as an electric automobile, a base station and an outdoor cabinet. The heat generating component can be an engine, a motor, a battery module, a PCB, an integrated circuit board and the like. The power equipment may be a data center, an office, a workshop, etc. The heat generating component may be a closed space.
Drawings
The drawings that accompany the detailed description can be briefly described as follows.
Fig. 1 is a schematic diagram of a refrigeration system provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a working medium circulation path of a refrigeration system during normal operation of an absorption refrigeration module provided in an embodiment of the present application;
FIG. 3 is a schematic view of a solution circulation path inside an absorption refrigeration module provided in an embodiment of the present application;
fig. 4 is a schematic diagram of the operation of the refrigeration system when the compressor provided in the embodiment of the present application is in operation.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
In the description of the present application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application.
In the description of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected" and "connected" should be interpreted broadly, such as may be a fixed connection, a removable connection, an interference connection or an integral connection; the specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
In the description of the present application, the term "and/or" is an association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, a/B denotes a or B.
In the description of the present application, the terms "first" and "second", etc. are used to distinguish different objects, rather than to describe a particular order of objects. For example, the first response message and the second response message, etc. are for distinguishing different response messages, not for describing a specific order of the response messages.
In the present application, the words "in one embodiment" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "in one embodiment" or "for example" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "in one embodiment" or "such as" is intended to present relevant concepts in a concrete fashion.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
Fig. 1 is a schematic diagram of a refrigeration system provided in an embodiment of the present application. As shown in fig. 1, the refrigeration system 100 includes a condensing heat exchanger 110, a switching valve 120, an evaporating heat exchanger 130, an absorption refrigeration module 140, and a compressor 150. The condensing heat exchanger 110, the switching valve 120 and the evaporating heat exchanger 130 are connected in sequence by pipelines. The absorption refrigeration module 140 is connected between the condensing heat exchanger 110 and the evaporating heat exchanger 130 by a pipe, and constitutes a circulation loop of "the absorption refrigeration module 140 → the condensing heat exchanger 110 → the on-off valve 120 → the evaporating heat exchanger 130". The compressor 150 is connected between the condensing heat exchanger 110 and the evaporating heat exchanger 130 by a pipe, and constitutes a circulation loop of "the compressor 150 → the condensing heat exchanger 110 → the on-off valve 120 → the evaporating heat exchanger 130". Working medium can flow in the two circulation loops to realize heat transfer among all the components. The pipeline can be divided into a gas pipeline and a liquid pipeline. The gaseous pipeline refers to a pipeline for circulating gaseous working media. The liquid pipeline refers to a pipeline for circulating a liquid working medium.
It should be noted that, in the embodiment of the present application, the working medium inside the circulation loop of the refrigeration system 100 is water. In other embodiments, the working fluid may also be other liquids, such as ammonia (NH) 3 /H 2 O), methyl ethyl ether (CH) 3 -O-CH 3 ) Tetrafluoroethane (CH) 2 FCF 3 ) Tetrafluoropropylene (C) 3 H 2 F 4 ) And the like, and may be a liquid obtained by mixing a plurality of different components, and the present application is not limited thereto.
The condensing heat exchanger 110 is a device that condenses a gaseous working medium into a liquid working medium and transfers heat. In the embodiment of the present application, two heat exchange tubes are disposed inside the condensing heat exchanger 110. One heat exchange tube (hereinafter, referred to as a "first heat exchange tube") of the condensing heat exchanger 110 has one end connected to the switching valve 120 through a pipe and the other end connected to an output terminal of the absorption refrigeration module 140 and an output terminal of the compressor 150 through a pipe. Both ends of the other heat exchanging pipe (hereinafter, referred to as "second heat exchanging pipe") of the condensing heat exchanger 110 are connected to a cold source through pipes. In the circulation loop formed by the cold source and the second heat exchange tube of the condensing heat exchanger 110, the cold source can flow low-temperature working medium into the second heat exchange tube of the condensing heat exchanger 110, so that the temperature of the working medium of the second heat exchange tube of the condensing heat exchanger 110 is lower than that of the working medium of the first heat exchange tube.
In one embodiment, the gaseous working medium enters the first heat exchange tube of the condensing heat exchanger 110, the working medium of the first heat exchange tube of the condensing heat exchanger 110 exchanges heat with the working medium of the second heat exchange tube, and the heat of the gaseous working medium of the first heat exchange tube is transferred to the working medium of the second heat exchange tube. After the gaseous working medium of the first heat exchange tube releases heat, the gaseous working medium is condensed into a liquid working medium. At this time, the condensing heat exchanger 110 condenses the working medium of the first heat exchange tube into a liquid working medium, which can reduce the temperature of the working medium of the first heat exchange tube. In other embodiments, the heat sink refers to a device for reducing heat, such as a cooling fan, a heat sink, a cooling tower, a dry cooler, and the like.
The evaporation heat exchanger 130 is a device that evaporates a liquid working medium into a gaseous working medium and transfers heat. In the embodiment of the present application, two heat exchange pipes are disposed inside the evaporation heat exchanger 130. One heat exchange tube (hereinafter, referred to as a "third heat exchange tube") of the evaporation heat exchanger 130 has one end connected to the switching valve 120 through a pipe and the other end connected to an input of the absorption refrigeration module 140 and an input of the compressor 150 through a pipe. Both ends of the other heat exchange tube (hereinafter referred to as "fourth heat exchange tube") of the evaporating heat exchanger 130 are connected to a heat generating component through a pipe. In a circulation loop formed by the fourth heat exchange tube of the evaporation heat exchanger 130 and the heat generating component, the heat generating component can flow a high-temperature working medium into the fourth heat exchange tube of the evaporation heat exchanger 130, so that the temperature of the working medium of the third heat exchange tube of the evaporation heat exchanger 130 is lower than that of the working medium of the fourth heat exchange tube. Wherein, the parts that generate heat can be the engine of car, new energy automobile's motor, battery module, printed Circuit Board (PCB), integrated circuit board etc. generate heat the device heat dissipation.
In one embodiment, the liquid working medium or the two-phase working medium flows into the third heat exchange tube of the evaporation heat exchanger 130, the working medium of the third heat exchange tube of the evaporation heat exchanger 130 exchanges heat with the working medium of the fourth heat exchange tube, and the heat of the working medium of the fourth heat exchange tube is transferred to the working medium of the third heat exchange tube. After absorbing heat, the liquid working medium of the third heat exchange tube is evaporated into a gaseous working medium. At this time, the evaporating heat exchanger 130 evaporates the liquid working medium of the third heat exchange tube into a gaseous working medium, which can reduce the temperature of the working medium of the fourth heat exchange tube. The cooled working medium of the fourth heat exchange tube of the evaporation heat exchanger 130 is circulated to the heat generating components, so that the temperature of the heat generating components can be reduced.
The switching valve 120 is connected between the first heat exchange pipe of the condensing heat exchanger 110 and the third heat exchange pipe of the evaporating heat exchanger 130 through a pipe. The switching valve 120 is in a conduction state, and the working medium of the first heat exchange tube of the condensing heat exchanger 110 flows into the third heat exchange tube of the evaporating heat exchanger 130. The switching valve 120 is in an off state, and the working medium of the first heat exchange pipe of the condensing heat exchanger 110 cannot flow into the third heat exchange pipe of the evaporating heat exchanger 130. In other embodiments, the on-off valve 120 may be an Electronic Expansion Valve (EEV), a Throttle Valve (TV), or other types of on-off valves, which are not limited herein.
In the embodiment of the present application, the working medium inside the pipeline between the first heat exchange pipe of the condensing heat exchanger 110 and the switch valve 120 is in a liquid state. The refrigeration system 100 can adjust the temperature of the working fluid flowing into the third heat exchange tube of the evaporating heat exchanger 130 by controlling the opening degree of the switching valve 120.
In one embodiment, the opening degree of the switch valve 120 is relatively small, and after the liquid working medium enters the pipeline between the switch valve 120 and the third heat exchange pipe of the evaporation heat exchanger 130, the pressure is instantly reduced, so that all or most of the liquid working medium is vaporized into the gaseous working medium. When a large amount of working medium is vaporized, a large amount of heat can be absorbed, so that the temperature of the liquid working medium or the surrounding environment is reduced more. At this time, the effect of reducing the temperature of the working medium by the on-off valve 120 is obvious.
In one embodiment, the opening degree of the switch valve 120 is larger, and after the liquid working medium enters the pipeline between the switch valve 120 and the third heat exchange pipe of the evaporation heat exchanger 130, the pressure change is smaller, and little or no liquid working medium is vaporized into the gaseous working medium. When a small amount of working medium is vaporized, a small amount of heat can be absorbed, so that the temperature of the liquid working medium or the surrounding environment is reduced less. At this time, the effect of the on-off valve 120 in reducing the temperature of the working medium is weak.
The refrigeration system 100 can adjust the opening degree of the switch valve 120 to control the ratio of the gaseous working medium and the liquid working medium entering the third heat exchange tube of the evaporation heat exchanger 130. The higher the proportion of the gaseous working medium is, the lower the temperature of the working medium flowing into the third heat exchange tube of the evaporation heat exchanger 130 by the switch valve 120 is, and the heat exchange speed between the third heat exchange tube and the fourth heat exchange tube of the evaporation heat exchanger 130 can be increased. The higher the proportion of the liquid working medium is, the more heat can be absorbed when the liquid working medium is vaporized, and the heat of the fourth heat exchange tube can be absorbed by the working medium of the third heat exchange tube of the evaporation heat exchanger 130.
In this embodiment, the refrigeration system 100 can adjust the opening degree of the switch valve 120, so that the working medium inside the pipeline between the third heat exchange tube of the evaporation heat exchanger 130 and the switch valve 120 is in a two-phase state. Wherein, the ratio of the gaseous working medium to the liquid working medium in the two-phase state can be determined according to the temperature of the working medium of the fourth heat exchange tube of the evaporation heat exchanger 130.
In the embodiment of the present application, the refrigeration system 100 can adjust the opening degree of the on-off valve 120 to control the pressure on both sides of the on-off valve 120. In one embodiment, when the opening degree of the on-off valve 120 is smaller, the pressure of the circulation loop between the absorption refrigeration module 140, the condensing heat exchanger 110 and the on-off valve 120 is higher. The pressure in the circulation loop between the on-off valve 120, the evaporative heat exchanger 130 and the absorption refrigeration module 140 is relatively low. In one embodiment, when the opening degree of the switching valve 120 is small, the pressure of the circulation loop between the compressor 150, the condensing heat exchanger 110, and the switching valve 120 is high. The pressure in the circulation loop between the on-off valve 120, the evaporating heat exchanger 130 and the compressor 150 is relatively low.
The absorption refrigeration module 140 completes the refrigerant cycle by using the mass fraction change of the working medium pair. As shown in fig. 2, the absorption refrigeration module 140 includes an absorber 141, a pump 142, an intermediate heat exchanger 143, a generator 144, and a switching valve 145. The output end of the absorber 141, the pump 142, the fifth heat exchange pipe of the intermediate heat exchanger 143, and the input end of the generator 144 are connected in sequence by pipes to form a flow path. The output end of the generator 144, the sixth heat exchange pipe of the intermediate heat exchanger 143, the on-off valve 145 and the input end of the absorber 141 are connected in sequence by pipes to form one flow path. The absorber 141, the generator 144 and the two flow paths constitute a circulation loop.
A refrigerant and an absorbent are disposed in the circulation loop of the absorption refrigeration module 140. The boiling point of the refrigerant is lower than the boiling point of the absorbent. The refrigerant may be dissolved in the absorbent, or the absorbent may be dissolved in the refrigerant. In the embodiment of the present application, the refrigerant is a working medium of the refrigeration system 100, and may be water. The absorbent may be lithium bromide or other high boiling point solutes. Wherein the boiling point of water is 100 ℃. The boiling point of lithium bromide is 1265 ℃.
The absorber 141 refers to a device that absorbs a refrigerant in a gaseous state by a high-concentration absorbent solution. In the embodiment of the present application, the absorber 141 is connected to the third heat exchange pipe of the evaporation heat exchanger 130 through a pipe. The gaseous working medium or the two-phase working medium of the evaporation heat exchanger 130 flows into the absorber 141, and the high-concentration absorbent solution inside the absorber 141 can absorb the gaseous working medium to form a solution of a dilute-concentration absorbent, so that the gaseous working medium is converted into the liquid working medium.
The pump 142 provides power for the solution in the circulation loop of the absorption refrigeration module 140, and the solution is circulated in the circulation loop of the absorption refrigeration module 140. In the present embodiment, the pump 142 pumps the absorbent solution of low concentration inside the absorber 141 into the generator 144.
The generator 144 refers to a device that precipitates refrigerant by heating. In the embodiment, the generator 144 is connected to the first heat exchanging pipe of the condensing heat exchanger 110 through a pipeline. The generator 144 is internally provided with a heater. The heater of the generator 144 heats the incoming dilute absorbent solution to vaporize the refrigerant in the solution into gaseous working medium. When the generator 144 generates the gaseous working medium, the pressure inside the generator 144 is increased, and the gaseous working medium flows into the first heat exchange tube of the condensing heat exchanger 110. The refrigerant of the low concentration absorbent solution inside the generator 144 is reduced to form a high concentration absorbent solution. The pressure inside the generator 144 is higher than the pressure inside the absorber 141, and the absorbent solution of high concentration inside the generator 144 flows into the absorber 141 through the intermediate converter 143 and the switching valve 145.
In one embodiment, the heater of the generator 144 may be a heat source, such as an engine of an automobile, a motor of a new energy automobile, a battery module, a Printed Circuit Board (PCB), an integrated circuit board, and the like. The heater of the generator 144 may be an electric heater or other devices, which are not limited herein.
The intermediate converter 143 refers to a device that transfers heat. In the embodiment of the present application, two heat exchange pipes are disposed inside the intermediate converter 143. One heat exchange tube (hereinafter referred to as "fifth heat exchange tube") of the intermediate converter 143 has one end connected to the pump 142 through a pipe and the other end connected to the input end of the generator 144 through a pipe. The other heat exchange pipe (hereinafter referred to as "sixth heat exchange pipe") of the intermediate converter 143 has one end connected to the output side of the generator 144 through a pipe and the other end connected to the on-off valve 145 through a pipe.
The solution of the fifth heat exchange pipe of the intermediate converter 143 is a low concentration absorbent solution of the absorber 141. The solution of the sixth heat exchange tube of the intermediate converter 143 is the high-concentration absorbent solution of the generator 144. The intermediate converter 143 can exchange heat between the solution in the fifth heat exchange tube and the solution in the sixth heat exchange tube, transfer the heat of the absorbent solution with high concentration in the sixth heat exchange tube to the absorbent solution with low concentration in the fifth heat exchange tube, and return the heat flowing out of the generator 144 to the generator 144, thereby reducing the heat loss of the generator 144.
The switching valve 145 is in a conducting state, and the high-concentration absorbent solution of the generator 144 flows into the absorber 141. The switching valve 145 is in an off state, and the high-concentration absorbent solution of the generator 144 cannot flow into the absorber 141. In other embodiments, the on-off valve 145 may be an EEV, TV or other type of on-off valve, but the application is not limited thereto.
In the embodiment of the present application, the opening of the on-off valve 145 may be adjusted by the refrigeration system 100, so that the liquid high-concentration absorbent solution is formed into a spray-like high-concentration absorbent solution and flows into the absorber 141. The sprayed high-concentration absorbent solution can better absorb the gaseous working medium.
In one embodiment, the opening of the on-off valve 145 is relatively small, and the pressure of the liquid high-concentration absorbent solution entering the line between the on-off valve 145 and the third heat exchange tube of the absorber 141 is momentarily reduced, so that the liquid high-concentration absorbent solution is vaporized into a spray of high-concentration absorbent solution.
An output end of the compressor 150 is connected to the first heat exchange tube of the condensing heat exchanger 110 through a pipe, and an input end of the compressor 150 is connected to the third heat exchange tube of the evaporating heat exchanger 130 through a pipe. In the embodiment of the present application, after the liquid working medium or the two-phase working medium flows into the compressor 150, the liquid working medium or the two-phase working medium is compressed under negative pressure to obtain the gaseous working medium. The compressor 150 allows the gaseous working fluid to flow into the first heat exchange pipe of the condensing heat exchanger 110.
In the embodiment of the present application, the compressor 150 is a negative pressure compressor. In the working process of the negative pressure compressor, the volume of the air suction cavity is gradually increased to form negative pressure. The liquid working medium or the two-phase working medium enters the air suction cavity under the action of pressure difference. The liquid working medium is vaporized into gaseous working medium under the action of negative pressure. The suction chamber gradually compresses the volume, allowing the gaseous working medium to flow into the first heat exchange tube of the condensing heat exchanger 110.
The refrigeration system 100 also includes a vent valve 160. The discharge valve 160 is connected between the compressor 150 and the first heat exchange pipe of the condensing heat exchanger 110 through a pipe. The discharge valve 160 is in a closed state, and the gaseous working medium in the pipe between the compressor 150 and the first heat exchange pipe of the condensing heat exchanger 110 cannot be discharged to the outside. The discharge valve 160 is in a conduction state, and the gaseous working medium in the pipe between the compressor 150 and the first heat exchanging pipe of the condensing heat exchanger 110 can be discharged to the outside.
In one embodiment, when the compressor 150 outputs the gaseous working medium to the first heat exchange tube of the condensing heat exchanger 110, the pressure of the pipeline between the compressor 150 and the first heat exchange tube of the condensing heat exchanger 110 may be relatively high. When the pressure of the pipeline between the compressor 150 and the first heat exchange pipe of the condensing heat exchanger 110 is greater than a set threshold value, the exhaust valve 160 is in a conduction state, so that the gaseous working medium in the pipeline between the compressor 150 and the first heat exchange pipe of the condensing heat exchanger 110 is exhausted to the outside, and the pressure of the pipeline between the compressor 150 and the first heat exchange pipe of the condensing heat exchanger 110 is reduced.
In the embodiment of the present application, the first heat exchange tube of the condensing heat exchanger 110, the switch valve 120, the third heat exchange tube of the evaporating heat exchanger 130, and the absorption refrigeration module 140 are sequentially communicated through a pipeline to form a closed loop. The fourth heat exchange pipe of the evaporation heat exchanger 130 is connected to a heat generating component through a pipe. The absorption refrigeration module 140 absorbs the gaseous working medium of the third heat exchange tube of the evaporation heat exchanger 130, and then outputs the gaseous working medium to the first heat exchange tube of the condensation heat exchanger 110. The refrigeration system 100 refrigerates heat generating parts through a circulation loop of "the absorption refrigeration module 140 → the first heat exchange tube of the condensing heat exchanger 110 → the switching valve 120 → the third heat exchange tube of the evaporating heat exchanger 130".
The first heat exchange tube of the condensing heat exchanger 110, the switching valve 120, the third heat exchange tube of the evaporating heat exchanger 130 and the compressor 150 are sequentially communicated through a pipeline to form a closed loop. When the absorption refrigeration module 140 cannot operate, the refrigeration system 100 refrigerates heat-generating components through a circulation loop of "the compressor 150 → the first heat exchange tube of the condensing heat exchanger 110 → the switching valve 120 → the third heat exchange tube of the evaporating heat exchanger 130", so that the refrigeration system 100 can uninterruptedly refrigerate the heat-generating components.
In the embodiment of the present application, the refrigeration system 100 can circulate the circulation loop of the absorption refrigeration module 140 → the first heat exchange tube of the condensation heat exchanger 110 → the switch valve 120 → the third heat exchange tube of the evaporation heat exchanger 130 and the circulation loop of the compressor 150 → the first heat exchange tube of the condensation heat exchanger 110 → the switch valve 120 → the third heat exchange tube of the evaporation heat exchanger 130 at the same time, so that the refrigeration effect of the refrigeration system 100 can be improved, and the energy consumption of the refrigeration system 100 can be reduced.
As shown in fig. 2, when the absorption refrigeration module 140 can work normally, the high-concentration absorbent solution of the absorber 141 of the absorption refrigeration module 140 can absorb the gaseous working medium of the third heat exchange tube of the evaporation heat exchanger 130 to form a solution of the dilute-concentration absorbent, so as to convert the gaseous working medium into the liquid working medium. The pump 142 of the absorption refrigeration module 140 pumps the low concentration absorbent solution inside the absorber 141 into the generator 144.
The generator 144 of the absorption refrigeration module 140 heats the incoming dilute absorbent solution to vaporize the refrigerant in the solution into gaseous working fluid. When the generator 144 generates the gaseous working medium, the pressure inside the generator 144 is increased, so that the gaseous working medium flows into the first heat exchange tube of the condensing heat exchanger 110.
In the circulation loop of the cold source and the second heat exchange tube of the condensing heat exchanger 110, the low-temperature working medium of the cold source flows into the second heat exchange tube of the condensing heat exchanger 110. The gaseous working medium of the first heat exchange tube of the condensing heat exchanger 110 exchanges heat with the low-temperature working medium of the second heat exchange tube. The gaseous working medium of the first heat exchange tube of the condensing heat exchanger 110 is condensed into a liquid working medium. The liquid working medium of the first heat exchange pipe of the condensing heat exchanger 110 flows into the switching valve 120.
The refrigeration system 100 allows the on-off valve 120 to convert the liquid working medium into a two-phase working medium by adjusting the opening degree of the on-off valve 120. The two-phase working medium flows into the third heat exchange tube of the evaporating heat exchanger 130. The two-phase working medium of the third heat exchange tube of the evaporation heat exchanger 130 exchanges heat with the working medium of the fourth heat exchange tube. The liquid working medium of the third heat exchange tube of the evaporating heat exchanger 130 is evaporated into a gaseous working medium. The gaseous working medium of the third heat exchange tube of the evaporation heat exchanger 130 flows into the absorber 141 of the absorption refrigeration module 140.
In the circulation loop of the fourth heat exchange tube of the evaporation heat exchanger 130 and the heat generating component, the working medium cooled by the fourth heat exchange tube of the evaporation heat exchanger 130 flows into the heat generating component, so that the temperature of the heat generating component can be reduced.
As shown in fig. 3, the generator 144 of the absorption refrigeration module 140 heats the incoming solution of the dilute absorbent to vaporize the refrigerant in the solution into a gaseous working medium. The refrigerant of the low concentration absorbent solution inside the generator 144 is reduced to form a high concentration absorbent solution. The pressure inside the generator 144 is higher than that inside the absorber 141, and the absorbent solution of high concentration inside the generator 144 flows into the on-off valve 145 through the intermediate converter 143.
The refrigeration system 100 adjusts the opening degree of the on-off valve 145 of the absorption refrigeration module 140, so that the liquid high-concentration absorbent solution is atomized into the absorber 141. The sprayed high-concentration absorbent solution of the absorber 141 of the absorption refrigeration module 140 can absorb the gaseous working medium of the third heat exchange tube of the evaporation heat exchanger 130.
As shown in fig. 4, when the absorption refrigeration module 140 may not be operated, the refrigeration system 100 stops the circulation loop of "the absorption refrigeration module 140 → the first heat exchange tube of the condensing heat exchanger 110 → the on-off valve 120 → the third heat exchange tube of the evaporating heat exchanger 130" and operates the compressor 150. The refrigeration system 100 may circulate a circulation loop of "the compressor 150 → the first heat exchange tube of the condensing heat exchanger 110 → the switching valve 120 → the third heat exchange tube of the evaporating heat exchanger 130".
After the compressor 150 sucks the liquid working medium or the two-phase working medium of the first heat exchange tube of the condensing heat exchanger 110, the liquid working medium or the two-phase working medium is compressed under negative pressure to obtain a gaseous working medium. The compressor 150 allows the gaseous working fluid to flow into the first heat exchange pipe of the condensing heat exchanger 110.
In the circulation loop of the cold source and the second heat exchange tube of the condensing heat exchanger 110, the low-temperature working medium of the cold source flows into the second heat exchange tube of the condensing heat exchanger 110. The gaseous working medium of the first heat exchange tube of the condensing heat exchanger 110 exchanges heat with the low-temperature working medium of the second heat exchange tube. The gaseous working medium of the first heat exchange tube of the condensing heat exchanger 110 is condensed into a liquid working medium. The liquid working medium of the first heat exchange pipe of the condensing heat exchanger 110 flows into the switching valve 120.
The opening degree of the on-off valve 120 is adjusted by the refrigeration system 100, so that the on-off valve 120 converts the liquid working medium into the two-phase working medium. The two-phase working medium flows into the third heat exchange tube of the evaporating heat exchanger 130. The two-phase working medium of the third heat exchange tube of the evaporation heat exchanger 130 exchanges heat with the working medium of the fourth heat exchange tube. The liquid working medium of the third heat exchange tube of the evaporating heat exchanger 130 is evaporated into a gaseous working medium. The liquid working medium or the two-phase working medium of the third heat exchange pipe of the evaporation heat exchanger 130 is sucked into the compressor 150 again.
In the circulation loop of the fourth heat exchange tube of the evaporation heat exchanger 130 and the heat generating component, the working medium cooled by the fourth heat exchange tube of the evaporation heat exchanger 130 flows into the heat generating component, so that the temperature of the heat generating component can be reduced. When the absorption refrigeration module 140 cannot work, the refrigeration system 100 makes the compressor 150 work, so that the refrigeration system 100 can uninterruptedly refrigerate heat generating components.
In the embodiment of the present application, the working medium inside each circulation loop in the refrigeration system 100 uses water, which can reduce the cost of the refrigeration system 100 and improve the competitive advantage of the refrigeration system 100. As a pure natural green working medium, water has a zero Global Warming Potential (GWP), so that the refrigeration system 100 better conforms to the current trend of carbon peak reaching and carbon neutralization. The two circulation loops of the refrigeration system 100 both use water as a working medium, so that the energy consumption ratio (COP) of the refrigeration system 100 is increased by more than 16% compared with the COP of a conventional refrigeration system using chilled water as a working medium.
The present embodiment provides an electrical apparatus including a heat generating component and a refrigeration system 100 as described in fig. 1-4 and the corresponding protection schemes described above. The heat generating component may be provided therein with a working medium circulation loop, and the working medium circulation loop of the heat generating component is connected to the fourth heat exchange tube of the evaporation heat exchanger 130 of the refrigeration system 100 to form a circulation loop. The working medium cooled by the evaporating heat exchanger 130 of the refrigeration system 100 flows into the heat generating components, and the temperature of the heat generating components can be reduced.
The electric equipment can be an electric automobile, a base station, an outdoor cabinet and the like which are understood by people. The heat generating component can be a motor, a battery module, a PCB, an integrated circuit board and the like. The electrical equipment can be broadly understood as a data center, an office, a workshop, and the like. The heat generating component may be a closed space. Since the electric power equipment includes the refrigeration system, the electric power equipment has all or part of the advantages of the refrigeration system.
The type, number, shape, connection mode, structure and the like of the components of the refrigeration system provided by the embodiment of the application are not limited to the above embodiments, and all technical schemes realized under the principle of the application are within the protection scope of the scheme. Any one or more of the embodiments or illustrations in the specification, combined in a suitable manner, are within the scope of the present disclosure.
The types, the number, the shapes, the installation manners, the structures and the like of the components of the power equipment provided by the embodiment of the application are not limited to the embodiments, and all technical schemes realized under the principle of the application are within the protection scope of the scheme. Any one or more of the embodiments or illustrations in the specification, combined in a suitable manner, are within the scope of the present disclosure. The electronic device may be a power module, a new energy automobile, an outdoor base station, an outdoor cabinet, or other devices, which is not limited herein.
Finally, the above embodiments are merely used to illustrate the technical solutions of the present application. It will be understood by those skilled in the art that although the present application has been described in detail with reference to the foregoing embodiments, various changes in the embodiments described above may be made and equivalents may be substituted for elements thereof. Such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (14)

1. A refrigeration system, comprising: the system comprises a condensation heat exchanger, a first switch valve, an evaporation heat exchanger, an absorption refrigeration module and a compressor, wherein the condensation heat exchanger, the first switch valve and the evaporation heat exchanger are sequentially connected through a pipeline,
the condensing heat exchanger is respectively connected to the output end of the absorption refrigeration module and the output end of the compressor through pipelines and is used for condensing the gas working medium output by the absorption refrigeration module and/or the compressor into liquid working medium;
the evaporation heat exchanger is respectively connected with the input end of the absorption refrigeration module and the input end of the compressor through pipelines and is used for evaporating liquid working media into gaseous working media, inputting the gaseous working media into the absorption refrigeration module and/or the compressor and reducing the temperature of heating components.
2. The refrigeration system of claim 1 wherein the condensing heat exchanger comprises a first heat exchange tube and a second heat exchange tube,
one end of the first heat exchange tube is connected to the first switch valve through a pipeline, and the other end of the first heat exchange tube is connected to the output end of the absorption refrigeration module and the output end of the compressor through pipelines; and two ends of the second heat exchange tube are connected to the cold source through pipelines.
3. The refrigeration system according to claim 1 or 2, wherein the evaporative heat exchanger includes a third heat exchange tube and a fourth heat exchange tube,
one end of the third heat exchange tube is connected to the first switch valve through a pipeline, and the other end of the third heat exchange tube is connected to the input end of the absorption refrigeration module and the input end of the compressor through pipelines; and two ends of the second heat exchange tube are connected with the heating component through a pipeline.
4. The refrigeration system of any of claims 1-3, wherein the absorption refrigeration module comprises an absorber and a generator,
the input end of the absorber is respectively connected to the output ends of the evaporation converter and the generator through pipelines and is used for enabling the solution with the first concentration input by the generator to absorb the gaseous working medium of the evaporation converter;
the output end of the generator is connected to the condensation converter through a pipeline, the input end of the generator is connected to the output end of the generator through a pipeline, the generator is used for heating the solution with the second concentration input by the absorber and outputting the generated gaseous working medium to the condensation converter, and the adsorbent content of the solution with the first concentration is higher than that of the solution with the second concentration.
5. The refrigeration system of claim 4 wherein the absorption refrigeration module further comprises an intermediate heat exchanger,
the intermediate heat exchanger is arranged on a pipeline between the absorber and the generator and is used for transferring heat of the solution with the first concentration output by the generator to the solution with the second concentration output by the absorber.
6. The refrigeration system as recited in claim 5 wherein said intermediate heat exchanger comprises fifth and sixth heat exchange tubes,
one end of the fifth heat exchange tube is connected to the output end of the absorber through a pipeline, and the other end of the fifth heat exchange tube is connected to the input end of the generator through a pipeline; one end of the sixth heat exchange tube is connected to the input end of the absorber through a pipeline, and the other end of the sixth heat exchange tube is connected to the output end of the generator through a pipeline.
7. The refrigeration system of any of claims 4-6, wherein the absorption refrigeration module further comprises a pump,
the pump is arranged on a pipeline between the output end of the absorber and the fifth heat exchange pipe of the intermediate heat exchanger and is used for pumping the solution with the second concentration in the absorber into the generator.
8. The refrigeration system of any of claims 4-7, wherein the absorption refrigeration module further comprises a second on-off valve,
the second switch valve is arranged on a pipeline between the sixth heat exchange pipe of the intermediate heat exchanger and the input end of the absorber and is used for converting the solution with the first concentration in the generator into a spray-shaped solution with the first concentration.
9. The refrigeration system according to any one of claims 4 to 8, wherein the refrigerant inside the absorption refrigeration module is a working medium of the refrigeration system.
10. A refrigeration system as recited in any of claims 4-9 wherein the boiling point of the refrigerant inside the absorption refrigeration module is less than the boiling point of the absorbent inside the absorption refrigeration module.
11. The refrigeration system as recited in any one of claims 1 to 10, further comprising a discharge valve,
the exhaust valve is arranged on a pipeline between the condensation heat exchanger and the output end of the compressor and used for exhausting gaseous working media when the pressure of the pipeline between the condensation heat exchanger and the output end of the compressor is larger than a set threshold value.
12. A refrigeration system as claimed in any one of claims 1 to 11, wherein the refrigerant of the refrigeration system is water.
13. A refrigeration system as claimed in any one of claims 1 to 12, wherein the compressor is a negative pressure compressor.
14. An electrical device, comprising:
at least one heat-generating component, wherein the heat-generating component,
at least one refrigeration system according to any of claims 1 to 13, the evaporative heat exchangers of the at least one refrigeration system being respectively connected to the at least one heat-generating component by piping.
CN202211284863.7A 2022-10-20 2022-10-20 Refrigerating system and power equipment Pending CN115915705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211284863.7A CN115915705A (en) 2022-10-20 2022-10-20 Refrigerating system and power equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211284863.7A CN115915705A (en) 2022-10-20 2022-10-20 Refrigerating system and power equipment

Publications (1)

Publication Number Publication Date
CN115915705A true CN115915705A (en) 2023-04-04

Family

ID=86471775

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211284863.7A Pending CN115915705A (en) 2022-10-20 2022-10-20 Refrigerating system and power equipment

Country Status (1)

Country Link
CN (1) CN115915705A (en)

Similar Documents

Publication Publication Date Title
US10356949B2 (en) Server rack heat sink system with combination of liquid cooling device and auxiliary heat sink device
JP2009529237A (en) System and method for cooling a server-based data center
CN101922778B (en) Semiconductor refrigerating air conditioning device
WO2013135048A1 (en) Heat exchanger and cabinet
CN203628875U (en) Radiator assembly, air conditioner and air conditioning system
CN201844486U (en) Semiconductor refrigerating air-conditioning device
US20160320106A1 (en) Combined vapor absorption and mechanical compression cycle design
WO2024082675A1 (en) Refrigeration system and power device
CN103557571A (en) Inner heat pipe heat-exchange type semiconductor refrigeration device
CN201497089U (en) Evaporative condensing computer room air conditioner
CN114811997A (en) Novel cooling device
CN114245665A (en) Heat dissipation assembly and air conditioner
CN112230741A (en) Computer CPU cooling device
CN115915705A (en) Refrigerating system and power equipment
CN215073552U (en) Compact power device cooling system
WO2022110745A1 (en) Heat dissipation system, heat management apparatus, and working method thereof
CN115103579A (en) Compressor and fluorine pump system based on liquid cooling rack
CN103997875A (en) Cooling apparatus
CN210179811U (en) Air conditioning apparatus
CN210463384U (en) Air conditioning system
CN103557570A (en) Multilayer heat pipe heat exchange type semiconductor refrigeration system
CN112230740A (en) Computer CPU cooling device
CN111212553A (en) Multi-temperature-zone liquid cooling system
CN112954969A (en) Compact power device heat dissipation system and working method
CN110274330A (en) A kind of solar energy economical air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination