CN113418223A - Multi-water-temperature-working-condition air source heat pump unit and air source heat pump heating system - Google Patents
Multi-water-temperature-working-condition air source heat pump unit and air source heat pump heating system Download PDFInfo
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- CN113418223A CN113418223A CN202110564712.6A CN202110564712A CN113418223A CN 113418223 A CN113418223 A CN 113418223A CN 202110564712 A CN202110564712 A CN 202110564712A CN 113418223 A CN113418223 A CN 113418223A
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- side heat
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
- 239000007788 liquid Substances 0.000 claims description 16
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 19
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0002—Means for connecting central heating radiators to circulation pipes
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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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
Abstract
The invention discloses a multi-water temperature working condition air source heat pump unit and an air source heat pump heating system, wherein the multi-water temperature working condition air source heat pump unit comprises an outlet of an air side heat exchanger and an air suction port of a compressor which are communicated and connected; the outlet of the compressor is divided into two paths, wherein one path is a medium-pressure exhaust port of the compressor and is communicated and connected with the inlet of the second water-side heat exchanger, the other path is a high-pressure exhaust port of the compressor and is communicated and connected with the inlet of the first water-side heat exchanger, the outlet of the second water-side heat exchanger is communicated and connected with the inlet of the first water-side heat exchanger, and the outlet of the first water-side heat exchanger is communicated and connected with the inlet of the air-side heat exchanger; the floor heating radiator can meet the requirement of the floor heating and the water temperature of the radiating fins, and meets the requirements of energy conservation while taking comfort into consideration.
Description
Technical Field
The invention belongs to the technical field of air source heat pump heating, and particularly relates to an air source heat pump unit under multiple water temperature working conditions and an air source heat pump heating system.
Background
Along with the development of economy and society and the improvement of living standard of people, people have higher and higher requirements on the comfort in buildings, and the air source heat pump system is more and more widely applied because of the advantages of simple structure, flexible and convenient use and the like.
In the air source heat pump heating system, because the room functions are different, the requirements of different heating rooms on heating end equipment are different. In a room with common functions, the heating form often adopted is floor heating, because the floor heating is more comfortable. For rooms such as a toilet and the like, a radiating fin heating mode is often adopted due to reasons such as ground structure and the like, but the requirements of two heating modes of a floor heating mode and a radiator on water temperature are different. The floor heating can meet the requirements only by low-temperature hot water due to large laying area; and the radiator needs high-temperature hot water to ensure the heating temperature requirement of the room. Whether floor heating or radiating fins, the heat source forms are consistent, namely, the heat sources are all from the air source heat pump host. Therefore, a contradiction arises here: if the water supply temperature of the air source heat pump host machine is based on the floor heating, the water temperature is too low for the radiators, so that a plurality of radiators need to be arranged in a room, a large amount of installation space is occupied, and even the indoor heating requirement cannot be guaranteed due to the fact that the installation space is limited; if the water supply temperature of the air source heat pump host machine is set by taking the radiator as a reference, a room adopting a floor heating mode is uncomfortable due to overhigh ground temperature, and energy is not saved.
Disclosure of Invention
The invention provides an air source heat pump unit with multiple water temperature working conditions and an air source heat pump heating system, and aims to solve the problem that the water supply temperature of an air source heat pump host in the prior art cannot be simultaneously suitable for ground heating and the problem that the water temperature requirement, the comfort and the energy saving performance of a radiating fin are poor.
The invention specifically comprises the following scheme:
the invention provides an air source heat pump unit under multiple water temperature working conditions, which comprises an air side heat exchanger, wherein the outlet of the air side heat exchanger is communicated and connected with an air suction port of a compressor; the outlet of the compressor is divided into two paths, one path is a medium-pressure exhaust port of the compressor and is communicated with the inlet of the second water side heat exchanger, the other path is a high-pressure exhaust port of the compressor and is communicated with the inlet of the first water side heat exchanger, the outlet of the second water side heat exchanger is communicated with the inlet of the first water side heat exchanger, and the outlet of the first water side heat exchanger is communicated with the inlet of the air side heat exchanger.
In the multi-water-temperature working condition air source heat pump unit, a refrigerant evaporates and absorbs heat in a wind side heat exchanger (the process is changed from a state V to a state I), then enters a compressor from a compressor suction port and is compressed into a refrigerant gas with medium temperature and medium pressure (a state II), and then is divided into two paths, wherein one path flows into a second water side heat exchanger for condensation and heat release, and heats heating return water from a floor heater (the refrigerant is changed from the state II to the state VI, and the temperature of the floor heater return water is raised from the temperature to about the temperature); and the other path of refrigerant gas is continuously compressed into high-temperature and high-pressure refrigerant gas (state III) in the compressor, then enters the first water side heat exchanger for condensation and heat release, heats the heating return water from the radiator, enables the heating return water from the radiator to be heated to the required water temperature (the refrigerant is changed from state III to state IV, and the heating return water is heated to about the temperature), then the refrigerant flowing out of the first water side heat exchanger is changed into state VI, is mixed with the refrigerant flowing through the second water side heat exchanger and then is changed into state V, and then enters the air side heat exchanger for continuous evaporation and heat absorption and continuous circulation.
Further, a medium-pressure exhaust port of the compressor is communicated and connected with the second water-side heat exchanger through a third electronic expansion valve; and a medium-pressure exhaust port of the compressor is communicated and connected with an inlet of a third electronic expansion valve, and an outlet of the third electronic expansion valve is communicated and connected with an inlet of the second water-side heat exchanger.
Further, the first water side heat exchanger is communicated and connected with the air side heat exchanger through a first electronic expansion valve; the outlet of the first water side heat exchanger is communicated with the inlet of the first electronic expansion valve, and the outlet of the first electronic expansion valve is communicated with the inlet of the air side heat exchanger.
Further, the first electronic expansion valve is communicated and connected with the air side heat exchanger through a second electronic expansion valve; the outlet of the first electronic expansion valve is communicated with the inlet of the second electronic expansion valve, and the outlet of the second electronic expansion valve is communicated with the inlet of the air-side heat exchanger.
Further, the wind side heat exchanger is communicated and connected with the compressor through a gas-liquid separator; the outlet of the wind side heat exchanger is communicated with the inlet of the gas-liquid separator, and the outlet of the gas-liquid separator is communicated with the air suction port of the compressor.
Furthermore, the air suction port of the compressor is communicated and connected with the inlet of the gas-liquid separator through a four-way valve.
Further, the outlet of the wind side heat exchanger is communicated and connected with the inlet of the first water side heat exchanger through a four-way valve.
The invention also provides an air source heat pump heating system which comprises a floor heating structure and a radiator, wherein the floor heating structure and the radiator are in circulating communication connection with any one of the multiple water temperature working condition air source heat pump units.
Further, the heat sink includes a heat sink.
Further, the number of the radiators is at least two.
The invention has the beneficial effects that:
the air source heat pump unit and the air source heat pump heating system under the multiple water temperature working conditions can solve the problems that the water supply temperature of the air source heat pump host in the prior art cannot be simultaneously suitable for the ground heating and the poor water temperature requirement, comfort and energy conservation of the radiating fins; can satisfy the temperature requirement of ground heating and fin simultaneously, when considering the travelling comfort, satisfy energy-conservation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of an air source heat pump unit under multiple water temperature conditions according to the present invention.
The arrows in fig. 1 indicate the refrigerant gas flow direction.
Fig. 2 is a pressure-enthalpy diagram of the refrigerant.
In the figure, 1 is a wind side heat exchanger, 2 is a compressor, 3 is a first water side heat exchanger, 4 is a second water side heat exchanger, 5 is a third electronic expansion valve, 6 is a first electronic expansion valve, 7 is a second electronic expansion valve, 8 is a gas-liquid separator, and 9 is a four-way valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the multiple water temperature working condition air source heat pump unit may specifically include a compressor 2, a four-way valve 9, a gas-liquid separator 8, a first water side heat exchanger 3, a second water side heat exchanger 4, a wind side heat exchanger 1, a first electronic expansion valve 6, a second electronic expansion valve 7, and a third electronic expansion valve 5. The high-pressure exhaust port of the compressor 2 is connected with the inlet of the first water side heat exchanger 3, the outlet of the first water side heat exchanger 3 is connected with the inlet of the first electronic expansion valve 6, the outlet of the first electronic expansion valve 6 is connected with the inlet of the second electronic expansion valve 7, the outlet of the second electronic expansion valve 7 is connected with the inlet of the air side heat exchanger 1, the outlet of the air side heat exchanger 1 is connected with the inlet of the gas-liquid separator 8, and the outlet of the gas-liquid separator 8 is connected with the air suction port of the compressor 2. The medium-pressure exhaust port of the compressor 2 is connected with the inlet of a third electronic expansion valve 5, the outlet of the third electronic expansion valve 5 is connected with the inlet of a second water-side heat exchanger 4, and the outlet of the second water-side heat exchanger 4 is connected with the inlet of a second electronic expansion valve 7.
As shown in fig. 2, the specific working principle of the air source heat pump unit under the multiple water temperature conditions is as follows: the refrigerant evaporates and absorbs heat in the air side heat exchanger 1 (the process is changed from the state V to the state I), then enters the compressor 2 from a suction inlet of the compressor 2, is compressed into refrigerant gas with medium temperature and medium pressure (the state II), and is divided into two paths, wherein one path of refrigerant gas flows into the second water side heat exchanger 4 through the third electronic expansion valve 5 to be condensed and release heat, and heats the heating backwater from the ground heating (the refrigerant is changed from the state II to the state VI, and the temperature of the ground heating backwater is raised from 35 ℃ to about 45 ℃), the other path of refrigerant gas is continuously compressed into refrigerant gas with high temperature and high pressure (the state III) in the compressor 2, and then enters the first water side heat exchanger 3 to be condensed and released heat, and heats the heating backwater from the radiator, so that the heating backwater from the radiator is heated to the required water temperature (the refrigerant is changed from the state III to the state IV, and the heating backwater is heated to about 60 ℃), and then, the refrigerant flowing out of the first water side heat exchanger 3 is subjected to primary throttling through the first electronic expansion valve 6 to be changed into a state VI, is mixed with the refrigerant flowing through the second water side heat exchanger 4, is subjected to secondary throttling through the second electronic expansion valve 7 to be changed into a state V, and then enters the air side heat exchanger 1 to continue evaporation and heat absorption for continuous circulation.
Example 2
The utility model provides an air source heat pump heating system, includes floor heating structure and radiator, floor heating structure with the radiator all with following arbitrary any one many water temperature operating mode air source heat pump set circulation intercommunication connect.
The water inlets of the floor heating structure and the radiator are communicated and connected with the water outlets of the multi-water-temperature working condition air source heat pump unit, and the water outlets of the floor heating structure and the radiator are communicated and connected with the water inlets of the multi-water-temperature working condition air source heat pump unit to realize circulation heat supply of the air source heat pump heating system.
The multi-water temperature working condition air source heat pump unit can comprise an air side heat exchanger 1, wherein an outlet of the air side heat exchanger 1 is communicated and connected with an air suction port of a compressor 2; the outlet of the compressor 2 is divided into two paths, one path is a medium-pressure exhaust port of the compressor 2 and is communicated with the inlet of the second water side heat exchanger 4, the other path is a high-pressure exhaust port of the compressor 2 and is communicated with the inlet of the first water side heat exchanger 3, the outlet of the second water side heat exchanger 4 is communicated with the inlet of the first water side heat exchanger 3, and the outlet of the first water side heat exchanger 3 is communicated with the inlet of the wind side heat exchanger 1.
Further, a medium-pressure exhaust port of the compressor 2 is communicated and connected with a second water-side heat exchanger 4 through a third electronic expansion valve 5; the medium-pressure exhaust port of the compressor 2 is communicated and connected with the inlet of a third electronic expansion valve 5, and the outlet of the third electronic expansion valve 5 is communicated and connected with the inlet of a second water-side heat exchanger 4.
Further, the first water side heat exchanger 3 is communicated and connected with the air side heat exchanger 1 through a first electronic expansion valve 6; the outlet of the first water side heat exchanger 3 is communicated and connected with the inlet of the first electronic expansion valve 6, and the outlet of the first electronic expansion valve 6 is communicated and connected with the inlet of the air side heat exchanger 1.
Further, the first electronic expansion valve 6 is communicated and connected with the air side heat exchanger 1 through a second electronic expansion valve 7; an outlet of the first electronic expansion valve 6 is communicated and connected with an inlet of the second electronic expansion valve 7, and an outlet of the second electronic expansion valve 7 is communicated and connected with an inlet of the air-side heat exchanger 1.
Further, the wind side heat exchanger 1 is communicated and connected with the compressor 2 through a gas-liquid separator 8; an outlet of the wind side heat exchanger 1 is communicated with an inlet of the gas-liquid separator 8, and an outlet of the gas-liquid separator 8 is communicated with an air suction port of the compressor 2.
Furthermore, the air suction port of the compressor 2 is communicated and connected with the inlet of the gas-liquid separator 8 through a four-way valve 9.
Further, the outlet of the wind side heat exchanger 1 is communicated and connected with the inlet of the first water side heat exchanger 3 through a four-way valve 9.
Further, it may be further specific that the heat sink includes a heat radiating fin. The number of the heat sinks may be at least two.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A multi-water temperature working condition air source heat pump unit comprises an air side heat exchanger (1), wherein an outlet of the air side heat exchanger (1) is communicated and connected with an air suction port of a compressor (2); the heat exchanger is characterized in that the outlet of the compressor (2) is divided into two paths, one path is a medium-pressure exhaust port of the compressor (2) and is communicated with the inlet of the second water side heat exchanger (4), the other path is a high-pressure exhaust port of the compressor (2) and is communicated with the inlet of the first water side heat exchanger (3), the outlet of the second water side heat exchanger (4) is communicated with the inlet of the first water side heat exchanger (3), and the outlet of the first water side heat exchanger (3) is communicated with the inlet of the air side heat exchanger (1).
2. The multiple water temperature working condition air source heat pump unit according to claim 1, characterized in that the medium pressure air outlet of the compressor (2) is connected with the second water side heat exchanger (4) through a third electronic expansion valve (5); the medium-pressure exhaust port of the compressor (2) is communicated and connected with the inlet of a third electronic expansion valve (5), and the outlet of the third electronic expansion valve (5) is communicated and connected with the inlet of a second water-side heat exchanger (4).
3. The air source heat pump unit under the multiple water temperature working conditions as recited in claim 2, wherein the first water side heat exchanger (3) is connected with the air side heat exchanger (1) through a first electronic expansion valve (6); an outlet of the first water side heat exchanger (3) is communicated and connected with an inlet of a first electronic expansion valve (6), and an outlet of the first electronic expansion valve (6) is communicated and connected with an inlet of the air side heat exchanger (1).
4. The multiple water temperature working condition air source heat pump unit according to claim 3, characterized in that the first electronic expansion valve (6) is connected with the wind side heat exchanger (1) through the second electronic expansion valve (7); an outlet of the first electronic expansion valve (6) is communicated and connected with an inlet of the second electronic expansion valve (7), and an outlet of the second electronic expansion valve (7) is communicated and connected with an inlet of the air side heat exchanger (1).
5. The air source heat pump unit under the multiple water temperature working conditions as recited in claim 4, characterized in that the wind side heat exchanger (1) is connected with the compressor (2) through a gas-liquid separator (8); the outlet of the wind side heat exchanger (1) is communicated and connected with the inlet of the gas-liquid separator (8), and the outlet of the gas-liquid separator (8) is communicated and connected with the air suction port of the compressor (2).
6. The multi-water-temperature-condition air source heat pump unit as claimed in claim 5, wherein an air suction port of the compressor (2) is connected with an inlet of the gas-liquid separator (8) through a four-way valve (9).
7. The air source heat pump unit under the multiple water temperature conditions as recited in claim 1, wherein the outlet of the wind side heat exchanger (1) is connected with the inlet of the first water side heat exchanger (3) through a four-way valve (9).
8. An air source heat pump heating system comprises a floor heating structure and a radiator, and is characterized in that the floor heating structure and the radiator are connected with the multi-water-temperature-condition air source heat pump unit according to any one of claims 1-7 in a circulating and communicating mode.
9. The air-source heat pump heating system of claim 8, wherein the heat sink comprises fins.
10. The air-source heat pump heating system according to claim 9, wherein the number of radiators is at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564712.6A CN113418223A (en) | 2021-05-24 | 2021-05-24 | Multi-water-temperature-working-condition air source heat pump unit and air source heat pump heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110564712.6A CN113418223A (en) | 2021-05-24 | 2021-05-24 | Multi-water-temperature-working-condition air source heat pump unit and air source heat pump heating system |
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| Publication Number | Publication Date |
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| CN113418223A true CN113418223A (en) | 2021-09-21 |
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|---|---|---|---|
| CN202110564712.6A Pending CN113418223A (en) | 2021-05-24 | 2021-05-24 | Multi-water-temperature-working-condition air source heat pump unit and air source heat pump heating system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207146962U (en) * | 2017-08-18 | 2018-03-27 | 山东神舟制冷设备有限公司 | A kind of refrigeration system with two-way condenser |
| CN108007006A (en) * | 2017-11-07 | 2018-05-08 | 西安交通大学 | A kind of the self-cascade heat pump system and operational mode of multi-mode injection synergy |
| CN109579346A (en) * | 2018-11-27 | 2019-04-05 | 南京天加环境科技有限公司 | A kind of multi-connected machine in parallel that refrigerant distributes in due course and its control method |
| CN110207418A (en) * | 2019-06-25 | 2019-09-06 | 珠海格力电器股份有限公司 | A kind of heat pump system and control method with double evaporating temperatures |
| CN110454872A (en) * | 2019-08-20 | 2019-11-15 | 珠海格力电器股份有限公司 | A kind of compressor, fresh air conditioner and fresh air conditioner system |
| CN111306060A (en) * | 2020-02-26 | 2020-06-19 | 安徽美芝精密制造有限公司 | Scroll compressor and refrigeration equipment |
| CN212746644U (en) * | 2020-07-14 | 2021-03-19 | 宁波奥克斯电气股份有限公司 | Heat pump system |
-
2021
- 2021-05-24 CN CN202110564712.6A patent/CN113418223A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207146962U (en) * | 2017-08-18 | 2018-03-27 | 山东神舟制冷设备有限公司 | A kind of refrigeration system with two-way condenser |
| CN108007006A (en) * | 2017-11-07 | 2018-05-08 | 西安交通大学 | A kind of the self-cascade heat pump system and operational mode of multi-mode injection synergy |
| CN109579346A (en) * | 2018-11-27 | 2019-04-05 | 南京天加环境科技有限公司 | A kind of multi-connected machine in parallel that refrigerant distributes in due course and its control method |
| CN110207418A (en) * | 2019-06-25 | 2019-09-06 | 珠海格力电器股份有限公司 | A kind of heat pump system and control method with double evaporating temperatures |
| CN110454872A (en) * | 2019-08-20 | 2019-11-15 | 珠海格力电器股份有限公司 | A kind of compressor, fresh air conditioner and fresh air conditioner system |
| CN111306060A (en) * | 2020-02-26 | 2020-06-19 | 安徽美芝精密制造有限公司 | Scroll compressor and refrigeration equipment |
| CN212746644U (en) * | 2020-07-14 | 2021-03-19 | 宁波奥克斯电气股份有限公司 | Heat pump system |
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Application publication date: 20210921 |