CN220321650U - Energy-saving temperature-regulating cooling equipment for double refrigerating systems - Google Patents
Energy-saving temperature-regulating cooling equipment for double refrigerating systems Download PDFInfo
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- CN220321650U CN220321650U CN202321713134.9U CN202321713134U CN220321650U CN 220321650 U CN220321650 U CN 220321650U CN 202321713134 U CN202321713134 U CN 202321713134U CN 220321650 U CN220321650 U CN 220321650U
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- heat exchanger
- refrigerant
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- 238000001816 cooling Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 74
- 239000003507 refrigerant Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000005057 refrigeration Methods 0.000 claims abstract description 21
- 239000000110 cooling liquid Substances 0.000 abstract description 33
- 230000008859 change Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The utility model discloses energy-saving temperature-regulating cooling equipment with double refrigeration systems, which comprises a refrigeration system, a cold liquid internal circulation system and a cold liquid external circulation system, wherein the refrigeration system comprises two groups of refrigerant circulation, each group of refrigerant circulation comprises a compressor and a condenser, and the two groups of refrigerant circulation respectively use two refrigerant heat exchange channels of a plate heat exchanger; in the cold liquid internal circulation system, cold liquid internal circulation is formed by a cold liquid heat exchange channel of a plate heat exchanger, a water tank and an internal circulation pump; the cold liquid external circulation system is formed by a water tank, an external circulation pump and a load of the cold liquid internal circulation system. The utility model can achieve the purpose of quickly reducing the temperature of the cooling liquid, can avoid the problem of increasing the fault rate of the compressor caused by the fact that the compressor still continues to work when the cooling liquid reaches the set value, achieves the purposes of saving energy and reducing energy consumption, and can adapt to the change of various climatic conditions, thereby enabling the equipment to fully meet the wide-temperature design.
Description
Technical Field
The utility model relates to the field of cold liquid systems, in particular to energy-saving temperature-regulating cooling equipment with double refrigeration systems.
Background
At present, cold liquid equipment is widely applied to the fields of military and aviation, power electronics, power stations, printing equipment, semiconductor equipment, communication fields, supercomputers and the like. In recent years, with the advent of high-energy weapons such as high-power radar transmitter sets and lasers, military cold liquid equipment has gradually developed to high-power, modularized, energy-saving, safe, environment-friendly and other aspects.
The main purpose of the cold liquid device is to provide a circulating cooling liquid with certain temperature, flow and pressure requirements for a thermal load. At present, a refrigerating unit mainly utilizes a compression refrigeration principle, a common refrigerating device uses two compressors to perform refrigeration, the refrigeration capacity is changed through a bypass valve to maintain the temperature of cooling liquid in a water tank, the compressors of the refrigerating device always keep in a working state after being started, even if the temperature of the cooling liquid reaches a set temperature, the compressors cannot be stopped, otherwise, once the temperature of the cooling liquid rises, the compressors are started to cool to reduce the temperature, the time is delayed, and the fight opportunity is missed. And the fault rate of the compressor can be increased by long-time operation of the compressor, the service life of the compressor is reduced, and the compressor can consume a large amount of electric power and waste energy because of full-load operation all the time.
Disclosure of Invention
The utility model provides energy-saving temperature-regulating cooling equipment for a double refrigerating system, which aims to solve the problem that a single compressor is adopted in cold liquid equipment in the prior art and the compressor needs to be kept working for a long time.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a two refrigerating system energy-conserving cooling arrangement that adjusts temperature, includes refrigerating system, cold liquid internal circulation system, cold liquid outer circulation system, wherein:
the refrigeration system comprises two groups of compressors, two groups of condensers and a plate heat exchanger, wherein the plate heat exchanger is provided with two groups of refrigerant heat exchange channels and one group of cold liquid heat exchange channels, and the two groups of condensers are integrated into a whole; the two groups of outlets of the compressors are connected with the inlets of the two groups of condensers in one-to-one correspondence, the outlets of the two groups of condensers are connected with one ends of two groups of refrigerant heat exchange channels of the plate heat exchanger in one-to-one correspondence, and the other ends of the two groups of refrigerant heat exchange channels of the plate heat exchanger are connected with the return ports of the two groups of compressors in one-to-one correspondence, so that two groups of refrigerant circulation is formed;
the cold liquid internal circulation system comprises a cold liquid heat exchange channel of a plate heat exchanger in the refrigeration system, a water tank and an internal circulation pump, wherein the water tank, the internal circulation pump and the cold liquid heat exchange channel of the plate heat exchanger are connected according to a loop to form cold liquid internal circulation;
the cold liquid external circulation system comprises a water tank of the cold liquid internal circulation system and an external circulation pump, and the water tank, the external circulation pump and the load are connected according to a loop to form cold liquid external circulation.
Furthermore, in the refrigeration system, a liquid storage device and an expansion valve are respectively connected between each condenser and the corresponding refrigerant heat exchange channel of the plate heat exchanger.
Furthermore, a flow regulating device is also connected in the cold liquid internal circulation of the cold liquid internal circulation system.
Further, a gate valve, a pressure sensor and a flowmeter are also connected in the cold liquid external circulation of the cold liquid internal circulation system.
The utility model replaces a single large-displacement compressor by two groups of compressors with small displacement, thereby achieving the purposes of providing stable cooling liquid temperature and saving energy. When the temperature of the cooling liquid in the water tank is higher, the working mode of all the two groups of small-displacement compressor refrigerating systems is adopted, and when the temperature of the cooling liquid reaches a set value rapidly, one compressor is turned off, and the other compressor continuously works to provide a cold source for the cooling liquid in the water tank. At the moment, as one compressor is stopped, the electric power consumed by the equipment can be reduced, and the purpose of energy saving is achieved; if the temperature of the cooling liquid in the water tank begins to rise, the other compressor is stopped, so that the two compressors are at rest due to alternate work, thereby reducing the failure rate of the compressors and prolonging the service life of the compressors.
Compared with the prior art, the utility model has the advantages that:
1. the refrigerating system is designed with two groups of compressors to combine refrigerating modes, so that the purpose of quickly reducing the temperature of the cooling liquid can be achieved, the problem that the fault rate of the compressors is increased and the service life is shortened due to the fact that the compressors still continue to work when the cooling liquid reaches a set value can be avoided, and the purposes of saving energy and reducing energy consumption are achieved due to the fact that the two compressors work alternately when the cooling liquid reaches the set value.
2. According to the utility model, two groups of condensers are physically integrated together when the refrigerating system is designed, so that the volume of the unit is reduced, the condensing fans are shared, and the cost can be saved.
3. The circulating cooling liquid with certain temperature, pressure and flow rate can be provided for the equipment under the environmental condition of-40 ℃ to +50 ℃, and the circulating cooling liquid can adapt to the change of various climatic conditions, so that the equipment can comprehensively meet the wide-temperature design.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1, the embodiment discloses an energy-saving temperature-regulating cooling device with double refrigeration systems, which comprises a refrigeration system, a cold liquid inner circulation system and a cold liquid outer circulation system.
The refrigerating system comprises a compressor 1-1, a compressor 1-2, a condenser 2, a fan 3, a liquid storage 4-1, a liquid storage 4-2, an expansion valve 5-1, an expansion valve 5-2 and a plate heat exchanger 6, wherein the plate heat exchanger 6 is provided with two groups of refrigerant heat exchange channels and one group of cold liquid heat exchange channel, the condenser 2 is formed by integrating two sub-body condensers, and the two sub-body condensers share the fan 3.
The outlet of the compressor 1-1 is connected with the inlet of a first sub-body condenser in the condenser 2 through a connecting pipeline, the outlet of the first sub-body condenser is connected with the inlet of the liquid storage device 4-1 through a connecting pipeline, the outlet of the liquid storage device 4-1 is connected with the inlet of the expansion valve 5-1 through a connecting pipeline, the outlet of the expansion valve 5-1 is connected with one end of a first group of refrigerant heat exchange channels of the plate heat exchanger 6 through a connecting pipeline, and the other end of the first group of refrigerant heat exchange channels of the plate heat exchanger 6 is connected with the return port of the compressor 1-1 through a connecting pipeline, so that a first group of refrigerant circulation is formed.
The outlet of the compressor 1-2 is connected with the inlet of a second sub-body condenser in the condenser 2 through a connecting pipeline, the outlet of the second sub-body condenser is connected with the inlet of the liquid storage device 4-2 through a connecting pipeline, the outlet of the liquid storage device 4-2 is connected with the inlet of the expansion valve 5-2 through a connecting pipeline, the outlet of the expansion valve 5-2 is connected with one end of a second group of refrigerant heat exchange channels of the plate heat exchanger 6 through a connecting pipeline, and the other end of the second group of refrigerant heat exchange channels of the plate heat exchanger 6 is connected with the return port of the compressor 1-2 through a connecting pipeline, so that a second group of refrigerant circulation is formed.
The cold liquid internal circulation system comprises a cold liquid heat exchange channel of the plate heat exchanger 6, a water tank 7, an electric heater 16, an internal circulation pump 14, a flow regulating device 15 and the electric heater 16. The electric heater 16 is arranged in the water tank 7, the water tank 7 is provided with two inlets and two outlets, the first outlet of the water tank 7 is connected with the inlet of the internal circulation pump 14 through a connecting pipeline, the outlet of the internal circulation pump 14 is connected with the inlet of the flow regulating device 15 through a connecting pipeline, the outlet of the flow regulating device 15 is connected with one end of a cold liquid heat exchange channel of the plate heat exchanger 6 through a connecting pipeline, and the other end of the cold liquid heat exchange channel of the plate heat exchanger 6 is connected with one inlet of the water tank 7 through a connecting pipeline, so that the cold liquid internal circulation is formed.
The cold liquid external circulation system comprises a water tank 7, a temperature sensor 8, an external circulation pump 9, a pressure sensor 10, a gate valve 11-1, a gate valve 11-2, a load 12 and a flowmeter 13. The second outlet of the water tank 7 is connected with the inlet of the external circulation pump 9 through a connecting pipeline, the temperature sensor 8 is arranged on a pipeline between the water tank 7 and the external circulation pump 9, the outlet of the external circulation pump 9 is connected with the inlet of the pressure sensor 10 through a connecting pipeline, the outlet of the pressure sensor 10 is connected with the inlet of the gate valve 11-1 through a connecting pipeline, the outlet of the gate valve 11-1 is connected with the inlet of the load 12 through a connecting pipeline, the outlet of the load 12 is connected with the inlet of the gate valve 11-2 through a connecting pipeline, the outlet of the gate valve 11-2 is connected with the inlet of the flowmeter 13 through a connecting pipeline, and the outlet of the flowmeter 13 is connected with the other inlet of the water tank 7 through a connecting pipeline, thereby forming the external circulation of cold liquid.
The connecting pipeline of the embodiment is a stainless steel hard pipe or a stainless steel hose, and is provided with a connecting flange.
In this embodiment, the cooling liquid circulating in the inner and outer circulation systems of the cooling liquid is a mixture of ethylene glycol and deionized water.
The external circulation system of the cold liquid is responsible for delivering the cooling liquid solution meeting the temperature requirement to supply the load for cooling, the cooling liquid in the water tank 7 in the equipment is delivered into the load 12 for cooling through the pressure sensor 10 and the gate valve 11-1 under the action of the external circulation pump 9, meanwhile, the temperature of the cooling liquid rises due to the absorption of heat in the load 12, the cooling liquid returns into the water tank 7 through the gate valve 11-2 and the flow meter 13 under the action of the external circulation pump 9, and the pressure and the flow of the cooling liquid can be regulated through the gate valve 11-1 and the gate valve 11-2.
The cold liquid internal circulation system is responsible for cold and heat exchange of the cooling liquid solution, high-temperature cooling liquid in the water tank 7 in the equipment is fed into the plate heat exchanger 6 through the flow regulating device 15 under the action of the internal circulation pump 14, and the cooling capacity of the refrigerant which is subjected to evaporation and heat dissipation through the plate heat exchanger 6 is absorbed to cool. If the external environment is very low in winter, the initial temperature of the cooling liquid solution in the water tank is lower than the set value, the electric heater 16 in the water tank is started to heat the cooling liquid solution to the set value.
When the liquid supply temperature is higher than the set value, the refrigerating system is started, and in order to avoid the impact of large current on equipment, the two groups of refrigerating systems are started in a time-sharing mode. The first group of refrigerant circulation in the refrigeration system is put into operation firstly, after the compressor 1-1 is started, the refrigerant low-pressure steam in the plate heat exchanger 6 is absorbed, and compressed into high-temperature high-pressure gas which enters the condenser 2; the high-temperature high-pressure refrigerant gas entering the condenser 2 is heated in the condenser 2 to become medium-temperature high-pressure liquid with a certain supercooling degree; the liquid refrigerant is collected into the liquid storage device 4-1 and becomes a low-temperature low-pressure gas-liquid mixture under the throttling and depressurization effects of the thermal expansion valve 5-1 through the thermal expansion valve 5-1; the low-temperature low-pressure gas-liquid mixture enters the plate heat exchanger 6, the refrigerant liquid is vaporized and absorbs heat, the heat energy of the cooling liquid passing through the plate heat exchanger 6 is absorbed, and the cooling liquid returns to the compressor 1-1 again and enters the next refrigeration cycle; after the circulation operation of the first group of refrigerant in the refrigerating system is stable, the circulation operation of the second group of refrigerant in the refrigerating system is started, and after the compressor 1-2 is started, the refrigerant low-pressure steam in the plate heat exchanger 6 is absorbed and compressed into high-temperature high-pressure gas which enters the condenser 2; the high-temperature high-pressure refrigerant gas entering the condenser 2 is heated in the condenser 2 to become medium-temperature high-pressure liquid with a certain supercooling degree; the liquid refrigerant is collected into the liquid storage device 4-2 and becomes a low-temperature low-pressure gas-liquid mixture under the throttling and depressurization effects of the thermal expansion valve 5-2 through the thermal expansion valve 5-2; the low-temperature low-pressure gas-liquid mixture enters a plate heat exchanger 6, the refrigerant liquid is vaporized and absorbs heat, the heat energy of the cooling liquid passing through the plate heat exchanger 6 is absorbed, and the cooling liquid returns to the compressor 1-2 again and enters the next refrigeration cycle; thus forming a refrigeration cycle system of the cold liquid device. When the temperature sensor 8 detects that the temperature of the cooling liquid reaches a set value, the first group of refrigerant circulation in the refrigerating system stops running, and when the temperature sensor 8 detects that the temperature of the cooling liquid gradually rises to exceed the set value, the first group of refrigerant circulation in the refrigerating system is put into running again; when the temperature sensor 8 detects that the temperature of the coolant reaches the set value again, the first group of refrigerant cycles in the refrigeration system stops.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, and the examples described herein are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the spirit and scope of the present utility model. The individual technical features described in the above-described embodiments may be combined in any suitable manner without contradiction, and such combination should also be regarded as the disclosure of the present disclosure as long as it does not deviate from the idea of the present utility model. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.
The present utility model is not limited to the specific details of the above embodiments, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the protection scope of the present utility model without departing from the scope of the technical concept of the present utility model, and the technical content of the present utility model is fully described in the claims.
Claims (4)
1. The energy-saving temperature-regulating cooling equipment with double refrigeration systems is characterized by comprising a refrigeration system, a cold liquid internal circulation system and a cold liquid external circulation system, wherein:
the refrigeration system comprises two groups of compressors, two groups of condensers and a plate heat exchanger, wherein the plate heat exchanger is provided with two groups of refrigerant heat exchange channels and one group of cold liquid heat exchange channels, and the two groups of condensers are integrated into a whole; the two groups of outlets of the compressors are connected with the inlets of the two groups of condensers in one-to-one correspondence, the outlets of the two groups of condensers are connected with one ends of two groups of refrigerant heat exchange channels of the plate heat exchanger in one-to-one correspondence, and the other ends of the two groups of refrigerant heat exchange channels of the plate heat exchanger are connected with the return ports of the two groups of compressors in one-to-one correspondence, so that two groups of refrigerant circulation is formed;
the cold liquid internal circulation system comprises a cold liquid heat exchange channel of a plate heat exchanger in the refrigeration system, a water tank and an internal circulation pump, wherein the water tank, the internal circulation pump and the cold liquid heat exchange channel of the plate heat exchanger are connected according to a loop to form cold liquid internal circulation;
the cold liquid external circulation system comprises a water tank of the cold liquid internal circulation system and an external circulation pump, and the water tank, the external circulation pump and the load are connected according to a loop to form cold liquid external circulation.
2. The energy-saving temperature-regulating cooling device of claim 1, wherein in the refrigerating system, a liquid storage device and an expansion valve are respectively connected between each condenser and a corresponding refrigerant heat exchange channel of the plate heat exchanger.
3. The energy-saving temperature-regulating cooling equipment of a double refrigerating system as claimed in claim 1, wherein a flow regulator is also connected to the internal circulation of the cold liquid of the internal circulation system of the cold liquid.
4. The energy-saving temperature-regulating cooling device of a double refrigerating system according to claim 1, wherein a gate valve, a pressure sensor and a flowmeter are also connected in the external circulation of cold liquid of the internal circulation system of cold liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321713134.9U CN220321650U (en) | 2023-07-03 | 2023-07-03 | Energy-saving temperature-regulating cooling equipment for double refrigerating systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321713134.9U CN220321650U (en) | 2023-07-03 | 2023-07-03 | Energy-saving temperature-regulating cooling equipment for double refrigerating systems |
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| Publication Number | Publication Date |
|---|---|
| CN220321650U true CN220321650U (en) | 2024-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321713134.9U Active CN220321650U (en) | 2023-07-03 | 2023-07-03 | Energy-saving temperature-regulating cooling equipment for double refrigerating systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220321650U (en) |
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2023
- 2023-07-03 CN CN202321713134.9U patent/CN220321650U/en active Active
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