CN115164440A - Refrigerating system and refrigerating equipment - Google Patents
Refrigerating system and refrigerating equipment Download PDFInfo
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- CN115164440A CN115164440A CN202210685544.0A CN202210685544A CN115164440A CN 115164440 A CN115164440 A CN 115164440A CN 202210685544 A CN202210685544 A CN 202210685544A CN 115164440 A CN115164440 A CN 115164440A
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- refrigeration
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- compressor
- electromagnetic valve
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- 238000005057 refrigeration Methods 0.000 claims abstract description 148
- 238000001704 evaporation Methods 0.000 claims abstract description 36
- 230000008020 evaporation Effects 0.000 claims abstract description 36
- 230000005494 condensation Effects 0.000 claims abstract description 28
- 238000009833 condensation Methods 0.000 claims abstract description 28
- 238000010257 thawing Methods 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention relates to a refrigeration system and refrigeration equipment, wherein the refrigeration system comprises a first refrigeration system and a second refrigeration system, and the first refrigeration system comprises a first compressor, a condenser, a first throttling device and a first heat exchanger which form a first refrigeration loop; the second refrigeration system comprises a second compressor, a condensation evaporator, a second throttling device and a third heat exchanger which form a second refrigeration loop; the condensation evaporator comprises an evaporation section and a condensation section which are arranged adjacently, heat exchange is carried out between the evaporation section and the condensation section, the outlet end of the first throttling device is connected with two paths in parallel, one path is connected with the first heat exchanger, and the other path is connected with the evaporation section; the first compressor, the condenser, the first throttling device and the evaporation section are sequentially connected to form a third refrigeration loop; the condensing section is connected to the second refrigeration loop. The invention has the advantages of energy saving, high efficiency, compact structure and resource saving.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to a refrigeration system and refrigeration equipment.
Background
Along with the continuous development of refrigeration technology, the requirements of human beings on the quality of life are higher and higher, and the requirements on the fluctuation range of the temperature of the refrigeration house are stricter and stricter.
At present, most of cold storages can adopt a single-stage compression type refrigerating system or a cascade type refrigerating system according to the temperature of the cold storage, after the selection of the cold storage is determined, the temperature range is also determined, the energy waste of a unit can be caused by the non-full-load operation, and the temperature requirement can not be realized by the overload.
When the refrigerating system operates, the evaporator in the refrigeration house frosts, the temperature of the refrigeration house rises, and the temperature fluctuation is large.
Therefore, there is a need to develop a refrigeration system and a refrigeration apparatus to solve at least one of the above problems.
Disclosure of Invention
The invention aims to provide a refrigerating system which is energy-saving, efficient, compact in structure and resource-saving.
In order to achieve the above object, an embodiment of the present invention provides a refrigeration system including a first compressor, a condenser, a first throttle device, a first heat exchanger, which constitute a first refrigeration circuit;
the second refrigeration system comprises a second compressor, a condensation evaporator, a second throttling device and a third heat exchanger which form a second refrigeration loop;
the condensation evaporator comprises an evaporation section and a condensation section which are arranged adjacently, heat exchange is carried out between the evaporation section and the condensation section, the outlet end of the first throttling device is connected with two paths in parallel, one path is connected with the first heat exchanger, and the other path is connected with the evaporation section;
the first compressor, the condenser, the first throttling device and the evaporation section are sequentially connected to form a third refrigeration loop;
the condensation section is connected to the second refrigeration loop, and the second compressor, the condensation section, the second throttling device and the third heat exchanger are sequentially connected to form the second refrigeration loop.
As a further improvement of the first embodiment of the present invention, the second refrigeration system further includes a second heat exchanger connected to an air inlet end of the second compressor, wherein the second compressor, the third heat exchanger, the second throttling device, and the second heat exchanger are sequentially connected to form a defrosting circuit.
As a further improvement of an embodiment of the present invention, the second refrigeration system further comprises a four-way reversing valve, the four-way reversing valve comprises a first port, a second port, a third port and a fourth port, wherein,
the first interface is connected with the air outlet end of the second compressor;
the second interface is divided into two paths, one path is connected with the condensation section, and the other path is connected with the second heat exchanger;
the third interface is connected with the air inlet end of the second compressor;
and the fourth interface is connected with the third heat exchanger.
As a further improvement of the first embodiment of the present invention, when the first port communicates with the second port and the third port communicates with the fourth port, the second refrigeration circuit is turned on.
As a further improvement of the embodiment of the present invention, when the first port communicates with the fourth port and the second port communicates with the third port, the defrosting circuit is turned on.
As a further improvement of the first embodiment of the present invention, the first refrigeration system further includes a first electromagnetic valve connected between the first heat exchanger and the first compressor, and a second electromagnetic valve connected between the first throttling device and the first heat exchanger, wherein one path of parallel connection of the outlet end of the first throttling device is sequentially the second electromagnetic valve, the first heat exchanger, and the first electromagnetic valve.
As a further improvement of the first embodiment of the present invention, the first refrigeration system further includes a third electromagnetic valve connected between the evaporation section and the first compressor, and a fourth electromagnetic valve connected between the first throttling device and the evaporation section, wherein another path of the parallel connection of the outlet end of the first throttling device is sequentially a fourth electromagnetic valve, an evaporation section, and a third electromagnetic valve.
As a further improvement of the embodiment of the present invention, when both the first solenoid valve and the second solenoid valve are turned on and at least one of the third solenoid valve and the fourth solenoid valve is turned off, the first refrigeration circuit is turned on and the third refrigeration circuit is turned off to form a single-stage compression refrigeration cycle.
As a further improvement of the embodiment of the present invention, when at least one of the first solenoid valve and the second solenoid valve is turned off, and the third solenoid valve and the fourth solenoid valve are both turned on, the first refrigeration circuit is turned off, and the third refrigeration circuit is turned on;
and when the first interface is communicated with the second interface and the third interface is communicated with the fourth interface, the second refrigeration loop is conducted to form a cascade refrigeration cycle.
The invention adopts another technical scheme that:
a refrigeration appliance comprising a refrigeration system as hereinbefore described.
Compared with the prior art, the invention has the beneficial effects that: according to the refrigeration system and the refrigeration equipment provided by the invention, the first heat exchanger and the evaporation section are switched and connected at the outlet end of the first throttling device, so that the aim of switching to a single-stage compression type refrigeration circulation mode or to a high-temperature stage circulation mode of cascade type refrigeration circulation is fulfilled, and the requirements of different refrigeration temperatures are met; meanwhile, the high-temperature stage cycle of the cascade refrigeration cycle and the low-temperature stage cycle of the cascade refrigeration cycle are combined through the arrangement of the condensation evaporator, so that the installation space is saved, the resource utilization rate is improved, and the energy-saving and high-efficiency combined type refrigeration cycle has the advantages of energy conservation, high efficiency, compact structure and resource conservation.
Drawings
FIG. 1 is a schematic diagram of the structural components of the refrigeration system of the present invention;
fig. 2 is a schematic structural view of a second refrigeration system of the present invention.
In the figure: 11. a first compressor; 12. a second compressor; 21. a condenser; 31. a first throttling device; 32. a second throttling device; 41. a first heat exchanger; 42. a second heat exchanger; 43. a third heat exchanger; 5. a condensing evaporator; 51. an evaporation section; 52. a condensing section; 6. a four-way reversing valve; 61. a first interface; 62. a second interface; 63. a third interface; 64. a fourth interface; 71. a first solenoid valve; 72. a second solenoid valve; 81. a third electromagnetic valve; 82. and a fourth solenoid valve.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
The terms "comprising" and "having," as well as any variations thereof, in the present invention are intended to cover non-exclusive inclusions. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The present invention mainly relates to: a refrigeration device comprises a storage space and a refrigeration system, wherein the refrigeration system is used for refrigerating the storage space.
A refrigeration system includes a first refrigeration system and a second refrigeration system.
As shown in fig. 1, in the present embodiment, the first refrigeration system includes a first compressor 11, a condenser 21, a first throttle device 31, and a first heat exchanger 41, which constitute a first refrigeration circuit. Wherein, first heat exchanger 41 sets up in the storing space to realize the refrigeration effect.
The second refrigeration system comprises a second compressor 12, a condenser-evaporator 5, a second throttling device 32, a third heat exchanger 43, which constitute a second refrigeration circuit. Wherein, the third heat exchanger 43 is arranged in the storage space to realize the refrigeration effect.
The condensing evaporator 5 includes an evaporation section 51 and a condensation section 52 which are adjacently disposed, and heat exchange is performed between the evaporation section 51 and the condensation section 52. The outlet end of the first throttling device 31 is connected in parallel with two paths, one path is connected with the first heat exchanger 41, so as to form a first refrigeration loop; the other path is connected to an evaporation section 51, and the first compressor 11, the condenser 21, the first throttle device 31, and the evaporation section 51 are connected in this order to form a third refrigeration circuit.
Specifically, the condensation section 52 is connected to the second refrigeration circuit, the second compressor 12, the condensation section 52, the second throttling device 32, and the third heat exchanger 43 are sequentially connected to form the second refrigeration circuit, and the condensation evaporator 5 performs a condensation function in the second refrigeration circuit and an evaporation function in the third refrigeration circuit.
In this embodiment, when the refrigeration equipment can meet the refrigeration temperature through a single-stage compression refrigeration cycle, the first heat exchanger 41 serves as an evaporator to realize the refrigeration cycle, the first compressor 11, the condenser 21, the first throttling device 31, and the first heat exchanger 41 are sequentially connected and conducted, and the refrigerant returns to the air inlet end of the first compressor 11 from the air outlet end of the first compressor 11 after sequentially flowing through the condenser 21, the first throttling device 31, and the first heat exchanger 41 to complete the single-stage compression refrigeration cycle.
When the refrigeration equipment needs to meet the refrigeration temperature through the cascade refrigeration cycle, the outlet end of the first throttling device 31 is switched to the evaporation section 51 to form a third refrigeration loop, and the refrigerant flows through the condenser 21, the first throttling device 31 and the evaporation section 51 from the outlet end of the first compressor 11 in sequence and then returns to the inlet end of the first compressor 11 to complete the high-temperature stage cycle of the cascade refrigeration cycle. Meanwhile, the refrigerant flows through the condensing section 52, the second throttling device 32 and the third heat exchanger 43 from the outlet end of the second compressor 12 in sequence and then returns to the inlet end of the second compressor 12 to complete the low-temperature stage cycle of the cascade refrigeration cycle. The method has the advantages of easy switching and convenient realization.
The first compressor 11, the condenser 21, the first throttle device 31, and the evaporator 51 are connected in this order to form a third refrigeration circuit as a high-temperature stage cycle of the cascade refrigeration cycle. The second compressor 12, the condensing section 52, the second throttle device 32, and the third heat exchanger 43 are connected in this order to form a second refrigeration circuit, which is a low-temperature stage cycle of the cascade refrigeration cycle. The arrangement of the condensing evaporator 5 combines the high-temperature stage cycle of the cascade refrigeration cycle with the low-temperature stage cycle of the cascade refrigeration cycle, so that the installation space is saved, the resource utilization rate is improved, and the energy-saving and high-efficiency advantages are achieved.
Preferably, the first throttling device 31 and the second throttling device 32 are both designed as capillary tubes or throttle valves, which serve the purpose of throttling and depressurizing.
Preferably, the evaporation section 51 and the condensation section 52 may each be a tubular structure disposed adjacently.
Further, the second refrigeration system further comprises a second heat exchanger 42 connected to the air inlet end of the second compressor 12, wherein the second compressor 12, the third heat exchanger 43, the second throttling device 32 and the second heat exchanger 42 are sequentially connected to form a defrosting loop. The refrigerant discharges high-temperature and high-pressure gas through the second compressor 12, the high-temperature and high-pressure gas passes through the third heat exchanger 43 and releases heat, and the third heat exchanger 43 realizes defrosting in a defrosting loop.
In order to realize that cooling does not stop when the third heat exchanger 43 defrosts, the third refrigeration loop is communicated to refrigerate the refrigeration equipment, the defrosting loop operates independently to realize reverse circulation to defrostize the third heat exchanger 43, and the refrigerant returns to the air inlet end of the second compressor 12 from the air outlet end of the second compressor 12 after sequentially passing through the third heat exchanger 43, the second throttling device 32 and the second heat exchanger 42 to complete defrosting circulation.
Referring to fig. 2, in order to switch the cooling mode of the second refrigeration circuit and the defrosting mode of the defrosting circuit, the second refrigeration system further includes a four-way reversing valve 6, and the four-way reversing valve 6 includes a first connection 61, a second connection 62, a third connection 63, and a fourth connection 64.
The first interface 61 is connected to the air outlet end of the second compressor 12;
the second interface 62 is divided into two paths, one path is connected with the condensing section 52, and the other path is connected with the second heat exchanger 42;
the third interface 63 is connected with the air inlet end of the second compressor 12;
the fourth port 64 is connected to the third heat exchanger 43.
Further, when the first port 61 is communicated with the second port 62, and the third port 63 is communicated with the fourth port 64, the second refrigeration circuit is conducted, and the refrigerant passes through the first port 61, the second port 62, the condensation section 52, the second throttling device 32, and the third heat exchanger 43 from the air outlet end of the second compressor 12 in sequence to complete the refrigeration cycle.
Further, when the first port 61 is communicated with the fourth port 64, and the second port 62 is communicated with the third port 63, the defrosting circuit is turned on, and the refrigerant passes through the first port 61, the fourth port 64, the third heat exchanger 43, the second throttling device 32, and the second heat exchanger 42 from the air outlet end of the second compressor 12 in sequence to complete the defrosting cycle.
Further, the first refrigeration system further includes a first solenoid valve 71 connected between the first heat exchanger 41 and the first compressor 11, and a second solenoid valve 72 connected between the first throttling device 31 and the first heat exchanger 41, wherein one of the paths connected in parallel at the outlet end of the first throttling device 31 is the second solenoid valve 72, the first heat exchanger 41, and the first solenoid valve 71.
When the first electromagnetic valve 71 and the second electromagnetic valve 72 are both turned on, the outlet end of the first throttling device 31 is connected to the first heat exchanger 41, and the first compressor 11, the condenser 21, the first throttling device 31, the second electromagnetic valve 72, the first heat exchanger 41, and the first electromagnetic valve 71 are sequentially connected and turned on.
It is understood that the first refrigeration system including one of the first solenoid valve 71 and the second solenoid valve 72 can also serve the purpose of switching the connection between the first heat exchanger 41 and the evaporation section 51 at the outlet end of the first throttling device 31.
Further, the first refrigeration system further includes a third solenoid valve 81 connected between the evaporation section 51 and the first compressor 11, and a fourth solenoid valve 82 connected between the first throttling device 31 and the evaporation section 51. The other path of the parallel connection of the outlet end of the first throttling device 31 is a fourth electromagnetic valve 82, an evaporation section 51 and a third electromagnetic valve 81. When the third electromagnetic valve 81 and the fourth electromagnetic valve 82 are both turned on, the outlet end of the first throttling device 31 is connected to the evaporation section 51, and the first compressor 11, the condenser 21, the first throttling device 31, the fourth electromagnetic valve 82, the evaporation section 51, and the third electromagnetic valve 81 are sequentially connected and turned on.
It is understood that the first refrigeration system including one of the third solenoid valve 81 and the fourth solenoid valve 82 can also serve the purpose of switching the connection between the first heat exchanger 41 and the evaporation section 51 at the outlet end of the first throttling device 31.
Further, when both the first solenoid valve 71 and the second solenoid valve 72 are on and at least one of the third solenoid valve 81 and the fourth solenoid valve 82 is off, the first refrigeration circuit is on and the third refrigeration circuit is off to form a single-stage compression refrigeration cycle. The aim of switching to the single-stage compression refrigeration cycle is achieved through the combined switching of the four electromagnetic valves.
Further, when at least one of the first solenoid valve 71 and the second solenoid valve 72 is turned off, and the third solenoid valve 81 and the fourth solenoid valve 82 are both turned on, the first refrigeration circuit is turned off, and the third refrigeration circuit is turned on; when the first port 61 is communicated with the second port 62, and the third port 63 is communicated with the fourth port 64, the second refrigeration circuit is conducted to form a cascade refrigeration cycle. The aim of switching to the cascade refrigeration cycle is achieved through the combined switching of the four electromagnetic valves and the four-way reversing valve 6.
Further, when at least one of the first solenoid valve 71 and the second solenoid valve 72 is turned off, and the third solenoid valve 81 and the fourth solenoid valve 82 are both turned on, the first refrigeration circuit is turned off, and the third refrigeration circuit is turned on; the refrigeration requirement of the refrigeration equipment is met; and when the first interface 61 is communicated with the fourth interface 64 and the second interface 62 is communicated with the third interface 63, the defrosting loop operates independently, and reverse circulation is realized for defrosting the third heat exchanger 43.
Compared with the prior art, the refrigeration system and the refrigeration equipment provided by the invention achieve the purpose of switching to a single-stage compression refrigeration cycle mode or to a high-temperature stage cycle mode of a cascade refrigeration cycle by switching and connecting the first heat exchanger 41 and the evaporation section 51 at the outlet end of the first throttling device 31, so as to meet the requirements of different refrigeration temperatures; meanwhile, the high-temperature stage cycle of the cascade refrigeration cycle and the low-temperature stage cycle of the cascade refrigeration cycle are combined through the arrangement of the condensation evaporator 5, so that the installation space is saved, the resource utilization rate is improved, and the energy-saving refrigeration cycle has the advantages of energy conservation, high efficiency, compact structure and resource conservation.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. A refrigeration system, comprising:
the first refrigeration system comprises a first compressor, a condenser, a first throttling device and a first heat exchanger which form a first refrigeration loop;
the second refrigeration system comprises a second compressor, a condensation evaporator, a second throttling device and a third heat exchanger which form a second refrigeration loop;
the condensation evaporator comprises an evaporation section and a condensation section which are arranged adjacently, heat exchange is carried out between the evaporation section and the condensation section, the outlet end of the first throttling device is connected with two paths in parallel, one path is connected with the first heat exchanger, and the other path is connected with the evaporation section;
the first compressor, the condenser, the first throttling device and the evaporation section are sequentially connected to form a third refrigeration loop;
the condensation section is connected into the second refrigeration loop, and the second compressor, the condensation section, the second throttling device and the third heat exchanger are sequentially connected to form the second refrigeration loop.
2. The refrigeration system of claim 1, wherein: the second refrigeration system further comprises a second heat exchanger connected to the air inlet end of the second compressor, wherein the second compressor, the third heat exchanger, the second throttling device and the second heat exchanger are sequentially connected to form a defrosting loop.
3. The refrigeration system of claim 2, wherein: the second refrigeration system also comprises a four-way reversing valve, the four-way reversing valve comprises a first interface, a second interface, a third interface and a fourth interface, wherein,
the first interface is connected with the air outlet end of the second compressor;
the second interface is divided into two paths, one path is connected with the condensation section, and the other path is connected with the second heat exchanger;
the third interface is connected with the air inlet end of the second compressor;
and the fourth interface is connected with the third heat exchanger.
4. The refrigeration system of claim 3, wherein: when the first interface is communicated with the second interface and the third interface is communicated with the fourth interface, the second refrigeration loop is conducted.
5. The refrigeration system of claim 3, wherein: when the first interface is communicated with the fourth interface and the second interface is communicated with the third interface, the defrosting loop is conducted.
6. The refrigeration system of claim 3, wherein: the first refrigeration system further comprises a first electromagnetic valve connected between the first heat exchanger and the first compressor, and a second electromagnetic valve connected between the first throttling device and the first heat exchanger, wherein one path of the outlet end of the first throttling device connected in parallel is sequentially provided with the second electromagnetic valve, the first heat exchanger and the first electromagnetic valve.
7. The refrigeration system of claim 6, wherein: the first refrigerating system further comprises a third electromagnetic valve connected between the evaporation section and the first compressor, and a fourth electromagnetic valve connected between the first throttling device and the evaporation section, wherein the other path of the outlet end of the first throttling device connected in parallel is sequentially provided with the fourth electromagnetic valve, the evaporation section and the third electromagnetic valve.
8. The refrigeration system of claim 7, wherein: when the first electromagnetic valve and the second electromagnetic valve are both conducted and at least one of the third electromagnetic valve and the fourth electromagnetic valve is disconnected, the first refrigeration loop is conducted and the third refrigeration loop is disconnected, so that a single-stage compression refrigeration cycle is formed.
9. The refrigeration system of claim 7, wherein: when at least one of the first electromagnetic valve and the second electromagnetic valve is disconnected and the third electromagnetic valve and the fourth electromagnetic valve are both communicated, the first refrigeration loop is disconnected and the third refrigeration loop is communicated;
and when the first interface is communicated with the second interface and the third interface is communicated with the fourth interface, the second refrigeration loop is conducted to form a cascade refrigeration cycle.
10. A refrigeration apparatus, characterized by: the refrigeration device comprising a refrigeration system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210685544.0A CN115164440A (en) | 2022-06-16 | 2022-06-16 | Refrigerating system and refrigerating equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210685544.0A CN115164440A (en) | 2022-06-16 | 2022-06-16 | Refrigerating system and refrigerating equipment |
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| CN115164440A true CN115164440A (en) | 2022-10-11 |
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| CN202210685544.0A Pending CN115164440A (en) | 2022-06-16 | 2022-06-16 | Refrigerating system and refrigerating equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024198359A1 (en) * | 2023-03-24 | 2024-10-03 | 哈尔滨工业大学 | Ultralow-temperature single-stage and double-stage hybrid air source heat pump unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024198359A1 (en) * | 2023-03-24 | 2024-10-03 | 哈尔滨工业大学 | Ultralow-temperature single-stage and double-stage hybrid air source heat pump unit |
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