CN110849035A - Heat pump system, air conditioner and control method of heat pump system - Google Patents
Heat pump system, air conditioner and control method of heat pump system Download PDFInfo
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- CN110849035A CN110849035A CN201911128820.8A CN201911128820A CN110849035A CN 110849035 A CN110849035 A CN 110849035A CN 201911128820 A CN201911128820 A CN 201911128820A CN 110849035 A CN110849035 A CN 110849035A
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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
- F25B30/02—Heat pumps of the compression type
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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
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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
- F25B41/31—Expansion 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
The invention provides a heat pump system, an air conditioner and a control method of the heat pump system, wherein the heat pump system comprises a compressor assembly; an indoor heat exchange assembly; the air outlet port of the compressor assembly is respectively communicated with the first port of the indoor heat exchange assembly and the first port of the outdoor heat exchange assembly through a control valve; the second port of the outdoor heat exchange assembly and the second port of the indoor heat exchange assembly are both communicated with the air inlet port of the compressor assembly; the inlet of the auxiliary heat exchange pipeline is communicated with the second port of the indoor heat exchange assembly, the outlet of the auxiliary heat exchange pipeline is communicated with the compressor assembly, the auxiliary heat exchange pipeline is provided with the auxiliary heat exchange assembly, one part of refrigerant medium flowing out of the indoor heat exchange assembly flows into the compressor assembly after passing through the outdoor heat exchange assembly, the other part of refrigerant medium flows into the auxiliary heat exchange pipeline and flows into the compressor assembly after being pressurized by the auxiliary heat exchange assembly, and therefore the problem that the operation efficiency of a heat pump system in the prior art is low is solved.
Description
Technical Field
The invention relates to the field of heat pump systems, in particular to a heat pump system, an air conditioner and a control method of the heat pump system.
Background
At present, the air conditioner becomes indispensable life electrical apparatus, along with the continuous development of science and technology, environmental pollution's continuous aggravation and the exhaustion of the energy also more and more high to the requirement of air conditioner, how to adopt energy-efficient technological means to realize that the air conditioner high efficiency operation has become the technical problem that urgently awaits solution.
The existing air conditioner heat energy system has single function, for example, a double-evaporation system can only realize a refrigeration mode or a heating mode, and the whole equipment can be idle in winter or summer, so that resources are wasted, and the operating efficiency of the whole heat pump system is low.
Disclosure of Invention
The invention mainly aims to provide a heat pump system, an air conditioner and a control method of the heat pump system, so as to solve the problem of low operation efficiency of the heat pump system in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a heat pump system including: the compressor assembly is used for compressing the cold medium; the indoor heat exchange assembly is used for exchanging heat between indoor air and the cold medium; the outdoor heat exchange assembly is used for exchanging heat between outdoor air and a cold medium, and the air outlet port of the compressor assembly is respectively communicated with the first port of the indoor heat exchange assembly and the first port of the outdoor heat exchange assembly through a control valve; the second port of the outdoor heat exchange assembly and the second port of the indoor heat exchange assembly are communicated with the air inlet port of the compressor assembly so as to convey the cold medium after heat exchange into the compressor assembly for compression; the auxiliary heat exchange pipeline is provided with the auxiliary heat exchange assembly, so that a part of refrigerant medium flowing out of the indoor heat exchange assembly flows into the compressor assembly after passing through the outdoor heat exchange assembly, and the other part of refrigerant medium flows into the auxiliary heat exchange pipeline and flows into the compressor assembly after being pressurized by the auxiliary heat exchange assembly.
Furthermore, the compressor component is provided with a first-stage compression chamber and a second-stage compression chamber, and the first-stage compression chamber is communicated with the second-stage compression chamber so that the refrigerant medium flows into the second-stage compression chamber for second-stage compression after being subjected to first-stage compression by the first-stage compression chamber; second ports of the indoor heat exchange assembly and the outdoor heat exchange assembly are communicated with the primary compression chamber, so that part of the cold medium flowing out of the indoor heat exchange assembly flows into the primary compression chamber to be compressed for the first stage; wherein, the entry end of supplementary heat exchange assemblies and indoor heat exchange assemblies's second port intercommunication, supplementary heat exchange assemblies's exit end and second grade compression chamber intercommunication to make by the pressurization of supplementary heat exchange assemblies another part refrigerant medium that indoor heat exchange assemblies flowed out, flow in the second grade compression chamber in with the refrigerant medium matter mixture after the compression of one-level compression chamber.
Further, the auxiliary heat exchange assembly comprises: the auxiliary heat exchanger comprises a first heat exchange channel and a second heat exchange channel, and the first heat exchange channel is communicated with the auxiliary heat exchange pipeline; and the heat exchange branch is communicated with the second heat exchange channel, and an auxiliary heat source for introducing a heat exchange medium is arranged on the heat exchange branch so that the heat exchange medium flowing into the second heat exchange channel heats the cold medium positioned in the first heat exchange channel.
Further, the auxiliary heat exchange assembly further comprises: and the variable-frequency water pump is arranged on the heat exchange branch.
Further, the variable frequency water pump is arranged between the outlet end of the heat exchange branch and the second heat exchange channel.
Further, the heat pump system further includes: and the third electronic expansion valve is arranged on the auxiliary heat exchange pipeline and is positioned between the auxiliary heat exchange assembly and the indoor heat exchange assembly.
Further, a second pressure sensor is arranged on the auxiliary heat exchange pipeline.
Further, the second pressure sensor is arranged between the outlet end of the auxiliary heat exchange assembly and the compressor assembly.
Further, a first pressure sensor is arranged at an air inlet port of the compressor assembly; and/or the air outlet port of the compressor assembly is provided with a third pressure sensor.
Further, the heat pump system further includes: and a first port of the flash evaporator is communicated with the air outlet of the outdoor heat exchange assembly, a second port of the flash evaporator is communicated with the compressor assembly, and a third port of the flash evaporator is communicated with the indoor heat exchange assembly.
According to a second aspect of the present invention, there is provided an air conditioner comprising a heat pump system as described above.
According to a third aspect of the present invention, there is provided a control method of a heat pump system, which is applied to the heat pump system described above, the control method of the heat pump system including: detecting an outdoor pressure value P1, detecting an indoor pressure value P3, detecting the pressure in the auxiliary heat exchange pipeline to P2 and an outdoor temperature value T0 according to a formula
Obtaining a k value, and setting the k value to be more than 0.98 and less than 1.14 in the control system; and adjusting the flow in the auxiliary heat exchange pipeline according to the outdoor temperature value T0 and the k value so as to adjust the pressure value of the refrigerant medium flowing through the auxiliary heat exchange assembly.
Further, the heat pump system is the above heat pump system, and the control method of the heat pump system further includes: when T0 is less than-10 deg.C and k is less than 0.98, the opening of the third electronic expansion valve of the heat pump system is increased; when T0 is less than-10 deg.C, k is greater than 1.14, the opening degree of the third electronic expansion valve is reduced; when the temperature is lower than minus 10 ℃ and lower than T0 and lower than or equal to 0 ℃, and k is lower than 0.98, increasing the opening degree of the third electronic expansion valve; when the temperature is-10 ℃ and T0 is not more than 0 ℃, and k is more than 1.14, reducing the opening degree of the third electronic expansion valve; when T0 is more than 0 ℃, k is less than 0.98, the opening degree of the third electronic expansion valve is increased; and when the T0 is more than 0 ℃ and the k is more than 1.14, reducing the opening degree of the third electronic expansion valve.
By applying the technical scheme of the invention, the heat pump system comprises a compressor assembly, an indoor heat exchange assembly, an outdoor heat exchange assembly and an auxiliary heat exchange pipeline, wherein the compressor assembly is used for compressing a cold medium, and the indoor heat exchange assembly is used for exchanging heat between indoor air and the cold medium; the outdoor heat exchange assembly is used for exchanging heat between outdoor air and a cold medium, and the air outlet port of the compressor assembly is respectively communicated with the first port of the indoor heat exchange assembly and the first port of the outdoor heat exchange assembly through the control valve; the second port of the outdoor heat exchange assembly and the second port of the indoor heat exchange assembly are communicated with the air inlet port of the compressor assembly, so that the cold medium after heat exchange is conveyed into the compressor assembly to be compressed, the inlet of the auxiliary heat exchange pipeline is communicated with the second port of the indoor heat exchange assembly, the outlet of the auxiliary heat exchange pipeline is communicated with the compressor assembly, the auxiliary heat exchange pipeline is provided with the auxiliary heat exchange assembly, so that one part of the cold medium flowing out of the indoor heat exchange assembly flows into the compressor assembly after passing through the outdoor heat exchange assembly, and the other part of the cold medium flows into the auxiliary heat exchange pipeline, is pressurized by the auxiliary heat exchange assembly and then flows into the compressor assembly. The heat pump system of the invention utilizes the air-supply enthalpy-increasing principle, pressurizes partial refrigerant medium through the auxiliary heat exchange assembly and then completes the refrigerant medium in the system, thereby improving the energy efficiency of the heat pump system and solving the problem of low operation efficiency of the heat pump system in the prior art.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, 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 shows a schematic structural view of an embodiment of a heat pump system according to the present invention.
Wherein the figures include the following reference numerals:
1. a compressor assembly; 2. an indoor heat exchange assembly; 3. an outdoor heat exchange assembly; 4. a control valve; 7. an auxiliary heat exchange line; 5. an auxiliary heat exchange assembly; 10. a primary compression chamber; 11. a secondary compression chamber; 51. an auxiliary heat exchanger; 510. a first heat exchange channel; 511. a second heat exchange channel; 52. a heat exchange branch; 53. an auxiliary heat source; 54. a variable frequency water pump; 6. a third electronic expansion valve; 8. a flash evaporator; 9. a first electronic expansion valve; 13. a second electronic expansion valve; 14. an electromagnetic valve; 15. a first pressure sensor; 16. a third pressure sensor; 55. a second pressure sensor.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The present invention provides a heat pump system, please refer to fig. 1, including: the compressor component 1 is used for compressing the refrigerant medium; the indoor heat exchange assembly 2 is used for exchanging heat between indoor air and a cold medium; the outdoor heat exchange assembly 3 is used for carrying out heat exchange between outdoor air and a cold medium, and an air outlet port of the compressor assembly 1 is respectively communicated with a first port of the indoor heat exchange assembly 2 and a first port of the outdoor heat exchange assembly 3 through a control valve 4; a second port of the outdoor heat exchange assembly 3 and a second port of the indoor heat exchange assembly 2 are both communicated with an air inlet port of the compressor assembly 1 so as to convey the cold medium after heat exchange into the compressor assembly 1 for compression; the auxiliary heat exchange pipeline 7 is characterized in that an inlet of the auxiliary heat exchange pipeline 7 is communicated with a second port of the indoor heat exchange assembly 2, an outlet of the auxiliary heat exchange pipeline 7 is communicated with the compressor assembly 1, and the auxiliary heat exchange assembly 5 is arranged on the auxiliary heat exchange pipeline 7, so that a part of refrigerant medium flowing out of the indoor heat exchange assembly 2 flows into the compressor assembly 1 after passing through the outdoor heat exchange assembly 3, and the other part of refrigerant medium flows into the auxiliary heat exchange pipeline 7, is pressurized by the auxiliary heat exchange assembly 5 and then flows into the compressor assembly 1.
The heat pump system comprises a compressor assembly 1, an indoor heat exchange assembly 2, an outdoor heat exchange assembly 3 and an auxiliary heat exchange pipeline 7, wherein the compressor assembly 1 is used for compressing a cold medium, and the indoor heat exchange assembly 2 is used for exchanging heat between indoor air and the cold medium; the outdoor heat exchange assembly 3 is used for carrying out heat exchange between outdoor air and a cold medium, and an air outlet port of the compressor assembly 1 is respectively communicated with a first port of the indoor heat exchange assembly 2 and a first port of the outdoor heat exchange assembly 3 through a control valve 4; the second port of the outdoor heat exchange assembly 3 and the second port of the indoor heat exchange assembly 2 are communicated with the air inlet port of the compressor assembly 1, so that the refrigerant medium after heat exchange is conveyed into the compressor assembly 1 to be compressed, the inlet of the auxiliary heat exchange pipeline 7 is communicated with the second port of the indoor heat exchange assembly 2, the outlet of the auxiliary heat exchange pipeline 7 is communicated with the compressor assembly 1, the auxiliary heat exchange assembly 5 is arranged on the auxiliary heat exchange pipeline 7, so that a part of the refrigerant medium flowing out of the indoor heat exchange assembly 2 flows into the compressor assembly 1 after passing through the outdoor heat exchange assembly 3, and the other part of the refrigerant medium flows into the auxiliary heat exchange pipeline 7, is pressurized by the auxiliary heat exchange assembly 5 and then flows into the compressor assembly 1. The heat pump system of the invention utilizes the air-supply enthalpy-increasing principle, pressurizes partial refrigerant medium through the auxiliary heat exchange component 5 and then completes the refrigerant medium in the system, thereby improving the energy efficiency of the heat pump system and solving the problem of low operation efficiency of the heat pump system in the prior art.
In the specific implementation process, the compressor component 1 is provided with a first-stage compression chamber 10 and a second-stage compression chamber 11, wherein the first-stage compression chamber 10 is communicated with the second-stage compression chamber 11, so that the refrigerant flows into the second-stage compression chamber 11 for second-stage compression after passing through the first-stage compression chamber 10 for first-stage compression; second ports of the indoor heat exchange assembly 2 and the outdoor heat exchange assembly 3 are communicated with the first-stage compression chamber 10, so that a part of cold medium flowing out of the indoor heat exchange assembly 2 flows into the first-stage compression chamber 10 to be compressed for the first stage; wherein, the entry end of supplementary heat exchange assemblies 5 and the second port intercommunication of indoor heat exchange assemblies 2, the exit end and the second grade compression chamber 11 intercommunication of supplementary heat exchange assemblies 5 to make another part refrigerant medium that flows out by indoor heat exchange assemblies 2 pass through supplementary heat exchange assemblies 5 pressurization back, flow into in the second grade compression chamber 11 with the refrigerant medium matter mixture after the compression of one-level compression chamber 10.
In the heat pump system provided by the present invention, the auxiliary heat exchange assembly 5 includes: the auxiliary heat exchanger 51, the auxiliary heat exchanger 51 comprises a first heat exchange channel 510 and a second heat exchange channel 511, and the first heat exchange channel 510 is communicated with the auxiliary heat exchange pipeline 7; and the heat exchange branch 52 is communicated with the second heat exchange channel 511, and an auxiliary heat source 53 for introducing a heat exchange medium is arranged on the heat exchange branch 52, so that the heat exchange medium flowing into the second heat exchange channel 511 heats the cold medium in the first heat exchange channel 510. Specifically, the auxiliary heat source 53 may be an air source or a water source, and the like, and the energy efficiency of the system is improved and resources are saved by recovering a high-temperature heat source (such as solar energy, waste heat or river and lake water).
In order to facilitate the control of the temperature inside the auxiliary heat exchanger 51, the auxiliary heat exchange assembly 5 further comprises: the variable frequency water pump 54 is arranged on the heat exchange branch 52, and the variable frequency water pump 54 is arranged on the heat exchange branch 52. By controlling the temperature in the auxiliary heat exchanger 51, the pressure of the refrigerant medium can also be controlled to adjust the pressure value in the system, further, the indoor temperature.
Preferably, a variable frequency water pump 54 is disposed between the outlet end of the heat exchange branch 52 and the second heat exchange passage 511.
Specifically, the heat pump system further includes: and the third electronic expansion valve 6 is arranged on the auxiliary heat exchange pipeline 7, and the third electronic expansion valve 6 is positioned between the auxiliary heat exchange assembly 5 and the indoor heat exchange assembly 2. When in the refrigeration cycle mode, the third electronic expansion valve 6 is closed.
In order to avoid that the pressure in the auxiliary heat exchange line 7 is too high and damages the line, a second pressure sensor 55 is arranged on the auxiliary heat exchange line 7. Preferably, a second pressure sensor 55 is provided between the outlet end of the auxiliary heat exchange assembly 5 and the compressor assembly 1.
The air inlet port of the compressor assembly 1 is provided with a first pressure sensor 15; and/or the outlet port of the compressor assembly 1 is provided with a third pressure sensor 16. The arrangement is convenient for the control system to detect the pressure value in the heat pump system.
In a specific use, the heat pump system further comprises: and a first port of the flash evaporator 8 is communicated with the air outlet of the outdoor heat exchange assembly 3, a second port of the flash evaporator 8 is communicated with the compressor assembly 1, and a third port of the flash evaporator 8 is communicated with the indoor heat exchange assembly 2.
The heat pump system further includes: the first electronic expansion valve 9, the first electronic expansion valve 9 is arranged between the flash evaporator 8 and the indoor heat exchange assembly 2; the second electronic expansion valve 13 is arranged between the outdoor heat exchange assembly 3 and the flash evaporator 8; a solenoid valve 14, the solenoid valve 14 being disposed between the compressor assembly 1 and the flash vessel 8. After the cold medium flowing out of the outdoor heat exchange assembly 3 is pressurized by the flash evaporator 8, one part of the cold medium flows into the compressor assembly 1, and the other part of the cold medium flows into the indoor heat exchange assembly 2; or, a part of the cold medium flowing out of the indoor heat exchange assembly 2 flows into the flash evaporator 8, and the other part of the cold medium flows into the auxiliary heat exchange assembly 5.
When the heat pump system is in a refrigeration cycle mode, the auxiliary heat exchange pipeline 7 is controlled to be open-circuit, when the electromagnetic valve 14 is closed, refrigerant medium is discharged from the compressor assembly 1 of the heat pump system, the refrigerant medium flows through the outdoor heat exchange assembly 3 of the heat pump system and then is subjected to pressure reduction, the reduced refrigerant medium flows through the flash evaporator for throttling, then flows into the indoor heat exchange assembly 2 to absorb heat of indoor air so as to cool the indoor air, and then flows through the outdoor heat exchange assembly 3 and then enters the compressor assembly 1 for compression; when the electromagnetic valve 14 is opened, part of refrigerant medium flowing through the outdoor heat exchange assembly 3 flows into the indoor heat exchange assembly 2, and the other part flows into the secondary compression chamber after passing through the flash evaporator.
When the heat pump system is in a heating circulation mode, the auxiliary heat exchange pipeline 7 is controlled to be a passage, the electromagnetic valve 14 is closed, after heat exchange is carried out on refrigerant media flowing out of the compressor assembly 1 through the indoor heat exchange assembly 2, one part of refrigerant media flows into the outdoor heat exchange assembly 3 after flowing through the flash evaporator, the other part of refrigerant media enters the auxiliary heat exchange pipeline 7 to be pressurized, and then two paths of refrigerant media are mixed and pressurized in the secondary compression cavity.
The invention also provides an air conditioner which comprises the heat pump system, wherein the heat pump system is the heat pump system of the embodiment.
The invention also provides a control method of the heat pump system, which is suitable for the heat pump system of the embodiment, and the control method of the heat pump system comprises the following steps: detecting an outdoor pressure value P1, detecting an indoor pressure value P3, detecting the pressure in the auxiliary heat exchange pipeline 7 to P2 and an outdoor temperature value T0 according to the formula
Obtaining a k value, and setting the k value to be more than 0.98 and less than 1.14 in the control system; according to outdoor temperature value T0 and k value, regulating flow in auxiliary heat exchange pipeline to regulate flow passing through auxiliary heat exchange pipelineThe pressure value of the refrigerant medium of the heat exchange assembly.
The heat pump system is the heat pump system of the above embodiment, and the control method of the heat pump system further includes: when T0 is less than-10 deg.C, k is less than 0.98, the opening of the third electronic expansion valve 6 of the heat pump system is increased; when T0 is less than-10 deg.C, k is greater than 1.14, the opening degree of the third electronic expansion valve 6 is reduced; when the temperature is lower than-10 ℃ and is less than or equal to T0 and less than or equal to 0 ℃, and k is less than 0.98, increasing the opening degree of the third electronic expansion valve 6; when the temperature is-10 ℃ and T0 is less than or equal to 0 ℃, and k is more than 1.14, the opening degree of the third electronic expansion valve 6 is reduced; when T0 is more than 0 ℃, k is less than 0.98, the opening degree of the third electronic expansion valve 6 is increased; when T0 is more than 0 ℃, k is more than 1.14, the opening degree of the third electronic expansion valve 6 is reduced.
Specifically, the system detects the values of the temperatures T0 and P1, P2 and P3 at predetermined time intervals.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the heat pump system comprises a compressor assembly 1, an indoor heat exchange assembly 2, an outdoor heat exchange assembly 3 and an auxiliary heat exchange pipeline 7, wherein the compressor assembly 1 is used for compressing a cold medium, and the indoor heat exchange assembly 2 is used for exchanging heat between indoor air and the cold medium; the outdoor heat exchange assembly 3 is used for carrying out heat exchange between outdoor air and a cold medium, and an air outlet port of the compressor assembly 1 is respectively communicated with a first port of the indoor heat exchange assembly 2 and a first port of the outdoor heat exchange assembly 3 through a control valve 4; the second port of the outdoor heat exchange assembly 3 and the second port of the indoor heat exchange assembly 2 are communicated with the air inlet port of the compressor assembly 1, so that the refrigerant medium after heat exchange is conveyed into the compressor assembly 1 to be compressed, the inlet of the auxiliary heat exchange pipeline 7 is communicated with the second port of the indoor heat exchange assembly 2, the outlet of the auxiliary heat exchange pipeline 7 is communicated with the compressor assembly 1, the auxiliary heat exchange assembly 5 is arranged on the auxiliary heat exchange pipeline 7, so that a part of the refrigerant medium flowing out of the indoor heat exchange assembly 2 flows into the compressor assembly 1 after passing through the outdoor heat exchange assembly 3, and the other part of the refrigerant medium flows into the auxiliary heat exchange pipeline 7, is pressurized by the auxiliary heat exchange assembly 5 and then flows into the compressor assembly 1. The heat pump system of the invention utilizes the air-supply enthalpy-increasing principle, pressurizes partial refrigerant medium through the auxiliary heat exchange component 5 and then completes the refrigerant medium in the system, thereby improving the energy efficiency of the heat pump system and solving the problem of low operation efficiency of the heat pump system in the prior art.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A heat pump system, comprising:
the compressor assembly (1) is used for compressing the cold medium;
the indoor heat exchange assembly (2) is used for exchanging heat between indoor air and the refrigerant medium;
the outdoor heat exchange assembly (3) is used for carrying out heat exchange on outdoor air and the cold medium, and an air outlet port of the compressor assembly (1) is respectively communicated with a first port of the indoor heat exchange assembly (2) and a first port of the outdoor heat exchange assembly (3) through a control valve (4); a second port of the outdoor heat exchange assembly (3) and a second port of the indoor heat exchange assembly (2) are both communicated with an air inlet port of the compressor assembly (1) so as to convey the cold medium after heat exchange into the compressor assembly (1) for compression;
the auxiliary heat exchange device comprises an auxiliary heat exchange pipeline (7), wherein an inlet of the auxiliary heat exchange pipeline (7) is communicated with a second port of the indoor heat exchange assembly (2), an outlet of the auxiliary heat exchange pipeline (7) is communicated with the compressor assembly (1), the auxiliary heat exchange pipeline (7) is provided with an auxiliary heat exchange assembly (5), so that a part of refrigerant medium flowing out of the indoor heat exchange assembly (2) flows into the compressor assembly (1) after passing through the outdoor heat exchange assembly (3), and the other part of refrigerant medium flows into the auxiliary heat exchange pipeline (7) and flows into the compressor assembly (1) after being pressurized by the auxiliary heat exchange assembly (5).
2. The heat pump system according to claim 1, wherein the compressor assembly (1) has a primary compression chamber (10) and a secondary compression chamber (11), the primary compression chamber (10) being in communication with the secondary compression chamber (11) such that the refrigerant medium flows into the secondary compression chamber (11) for secondary compression after being subjected to primary compression by the primary compression chamber (10); second ports of the indoor heat exchange assembly (2) and the outdoor heat exchange assembly (3) are communicated with the primary compression chamber (10), so that a part of cold medium flowing out of the indoor heat exchange assembly (2) flows into the primary compression chamber (10) to be subjected to primary compression;
the inlet end of the auxiliary heat exchange assembly (5) is communicated with the second port of the indoor heat exchange assembly (2), the outlet end of the auxiliary heat exchange assembly (5) is communicated with the second-stage compression chamber (11), so that the other part of refrigerant medium flowing out of the indoor heat exchange assembly (2) flows into the second-stage compression chamber (11) to be mixed with the refrigerant medium compressed by the first-stage compression chamber (10) after being pressurized by the auxiliary heat exchange assembly (5).
3. Heat pump system according to claim 2, characterized in that said auxiliary heat exchange assembly (5) comprises:
an auxiliary heat exchanger (51), the auxiliary heat exchanger (51) comprising a first heat exchange channel (510) and a second heat exchange channel (511), the first heat exchange channel (510) being in communication with the auxiliary heat exchange line (7);
the heat exchange branch (52) is communicated with the second heat exchange channel (511), and an auxiliary heat source (53) for introducing a heat exchange medium is arranged on the heat exchange branch (52), so that the heat exchange medium flowing into the second heat exchange channel (511) heats the cold medium in the first heat exchange channel (510).
4. A heat pump system according to claim 3, wherein said auxiliary heat exchange assembly (5) further comprises:
the variable-frequency water pump (54), the variable-frequency water pump (54) sets up on heat transfer branch road (52).
5. The heat pump system according to claim 4, wherein said variable frequency water pump (54) is arranged between an outlet end of said heat exchange branch (52) and said second heat exchange channel (511).
6. The heat pump system of claim 5, further comprising:
and the third electronic expansion valve (6) is arranged on the auxiliary heat exchange pipeline (7) and is positioned between the auxiliary heat exchange assembly (5) and the indoor heat exchange assembly (2).
7. Heat pump system according to claim 1, characterized in that a second pressure sensor (55) is arranged on the auxiliary heat exchange line (7).
8. The heat pump system according to claim 7, wherein said second pressure sensor (55) is arranged between an outlet end of said auxiliary heat exchange assembly (5) and said compressor assembly (1).
9. Heat pump system according to claim 1, characterized in that the inlet port of the compressor assembly (1) is provided with a first pressure sensor (15); and/or the air outlet port of the compressor assembly (1) is provided with a third pressure sensor (16).
10. The heat pump system of claim 2, further comprising:
a first port of the flash evaporator (8) is communicated with an air outlet of the outdoor heat exchange assembly (3), a second port of the flash evaporator (8) is communicated with the compressor assembly (1), and a third port of the flash evaporator (8) is communicated with the indoor heat exchange assembly (2).
11. An air conditioner comprising a heat pump system, characterized in that the heat pump system is the heat pump system of any one of claims 1 to 10.
12. A control method of a heat pump system applied to the heat pump system according to any one of claims 1 to 10; the control method of the heat pump system comprises the following steps: detecting an outdoor pressure value P1, detecting an indoor pressure value P3, detecting the pressure in the auxiliary heat exchange pipeline (7) to P2 and an outdoor temperature value T0 according to the formula
Obtaining a k value, and setting the k value to be more than 0.98 and less than 1.14 in the control system;
and adjusting the flow rate in the auxiliary heat exchange pipeline (7) according to the outdoor temperature value T0 and the k value so as to adjust the pressure value of the cold medium flowing through the auxiliary heat exchange assembly (5).
13. The method for controlling a heat pump system according to claim 12, wherein the heat pump system is the heat pump system according to claim 6, and the method for controlling a heat pump system further comprises:
when T0 < -10 ℃, k < 0.98, increasing the opening degree of a third electronic expansion valve (6) of the heat pump system;
when T0 < -10 ℃, k is more than 1.14, the opening degree of the third electronic expansion valve (6) is reduced;
when the temperature is-10 ℃ and T0 is not more than 0 ℃, and k is less than 0.98, increasing the opening degree of the third electronic expansion valve (6);
when the temperature is-10 ℃ and T0 is not more than 0 ℃, and k is more than 1.14, reducing the opening degree of the third electronic expansion valve (6);
when T0 is more than 0 ℃, k is less than 0.98, the opening degree of the third electronic expansion valve (6) is increased;
when T0 is more than 0 ℃, k is more than 1.14, the opening degree of the third electronic expansion valve (6) is reduced.
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| CN201911128820.8A CN110849035A (en) | 2019-11-18 | 2019-11-18 | Heat pump system, air conditioner and control method of heat pump system |
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| CN201911128820.8A CN110849035A (en) | 2019-11-18 | 2019-11-18 | Heat pump system, air conditioner and control method of heat pump system |
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| CN110849035A true CN110849035A (en) | 2020-02-28 |
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| CN201911128820.8A Pending CN110849035A (en) | 2019-11-18 | 2019-11-18 | Heat pump system, air conditioner and control method of heat pump system |
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| CN (1) | CN110849035A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080223055A1 (en) * | 2007-03-13 | 2008-09-18 | Lg Electronics Inc. | Compression system and air conditioning system |
| CN103245155A (en) * | 2012-02-14 | 2013-08-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Control method of bi-level enthalpy-adding heat pump system |
| WO2015158174A1 (en) * | 2014-04-15 | 2015-10-22 | 珠海格力电器股份有限公司 | Refrigeration device |
| US20160356537A1 (en) * | 2015-01-23 | 2016-12-08 | Lg Electronics Inc. | Cooling cycle apparatus for refrigerator |
| CN209042809U (en) * | 2018-08-21 | 2019-06-28 | 广东美的暖通设备有限公司 | Heat pump system and air conditioner |
| CN211146993U (en) * | 2019-11-18 | 2020-07-31 | 珠海格力电器股份有限公司 | Heat pump system and air conditioner |
-
2019
- 2019-11-18 CN CN201911128820.8A patent/CN110849035A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080223055A1 (en) * | 2007-03-13 | 2008-09-18 | Lg Electronics Inc. | Compression system and air conditioning system |
| CN103245155A (en) * | 2012-02-14 | 2013-08-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Control method of bi-level enthalpy-adding heat pump system |
| WO2015158174A1 (en) * | 2014-04-15 | 2015-10-22 | 珠海格力电器股份有限公司 | Refrigeration device |
| US20160356537A1 (en) * | 2015-01-23 | 2016-12-08 | Lg Electronics Inc. | Cooling cycle apparatus for refrigerator |
| CN209042809U (en) * | 2018-08-21 | 2019-06-28 | 广东美的暖通设备有限公司 | Heat pump system and air conditioner |
| CN211146993U (en) * | 2019-11-18 | 2020-07-31 | 珠海格力电器股份有限公司 | Heat pump system and air conditioner |
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