CN112444006A - Heat pump system, control method and air conditioner - Google Patents
Heat pump system, control method and air conditioner Download PDFInfo
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- CN112444006A CN112444006A CN202011450090.6A CN202011450090A CN112444006A CN 112444006 A CN112444006 A CN 112444006A CN 202011450090 A CN202011450090 A CN 202011450090A CN 112444006 A CN112444006 A CN 112444006A
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- way valve
- heat exchanger
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02743—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using three four-way 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present disclosure provides a heat pump system, a control method and an air conditioner, the heat pump system including: the system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and a throttling component; the first end of the first four-way valve is communicated with the exhaust end of the compressor, the second end of the first four-way valve can be communicated with the outdoor heat exchanger, the third end of the first four-way valve can be communicated with the indoor heat exchanger, and the fourth end of the first four-way valve can be communicated with the air suction end of the compressor; a fifth end of the second four-way valve can be communicated with the compressor, a sixth end of the second four-way valve can be communicated with the outdoor heat exchanger, a seventh end of the second four-way valve can also be communicated with the outdoor heat exchanger, and an eighth end of the second four-way valve can be communicated with the throttling component; and the ninth end of the third four-way valve can be communicated with the throttling component, the tenth end can be communicated with the compressor, the tenth end can be communicated with the indoor heat exchanger, and the twelfth end can also be communicated with the indoor heat exchanger. According to the heat pump system, the effect of countercurrent heat exchange of the indoor fin heat exchanger and the outdoor fin heat exchanger can be realized in the refrigerating and heating states, the heat exchange efficiency is improved, the heating capacity and the energy efficiency ratio of the heat pump system are improved, and the performance of the heat pump system is improved.
Description
Technical Field
The disclosure relates to the technical field of heat pumps, in particular to a heat pump system, a control method and an air conditioner.
Background
In order to improve the heat exchange efficiency of the fin heat exchanger, the refrigerant of the fin heat exchanger often runs opposite to the air flow direction, and countercurrent heat exchange is formed. However, for the heat pump system, because the flow directions of the refrigerant in the cooling and heating states are opposite, when the indoor and outdoor fin heat exchangers both satisfy the countercurrent heat exchange in the cooling state, if the heat pump system is switched to the heating state, the flow direction of the refrigerant is opposite to that in the cooling state, and at this time, the indoor and outdoor fin heat exchangers become the concurrent heat exchange, the heat pump system cannot realize the countercurrent heat exchange in both the cooling and heating states.
Because the heat pump system in the prior art can not realize the technical problems that the indoor and the outer fin heat exchangers can perform countercurrent heat exchange in the refrigerating and heating states at the same time, the heat pump system, the control method and the air conditioner are researched and designed according to the disclosure.
BRIEF SUMMARY OF THE PRESENT DISCLOSURE
Therefore, the technical problem to be solved by the present disclosure is to overcome the defect that the heat pump system in the prior art cannot simultaneously realize the countercurrent heat exchange of both the indoor and the outdoor fin heat exchangers in the cooling and heating states, thereby providing a heat pump system, a control method and an air conditioner.
In order to solve the above problem, the present disclosure provides a heat pump system including:
the system comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger and a throttling component; the first four-way valve is communicated with the exhaust end of the compressor, the second end of the first four-way valve is communicated with the outdoor heat exchanger, the third end of the first four-way valve is communicated with the indoor heat exchanger, and the fourth end of the first four-way valve is communicated with the suction end of the compressor;
the second four-way valve is arranged between the compressor and the outdoor heat exchanger, and a fifth end of the second four-way valve can be communicated with the compressor, a sixth end of the second four-way valve can be communicated with the outdoor heat exchanger, a seventh end of the second four-way valve can also be communicated with the outdoor heat exchanger, and an eighth end of the second four-way valve can be communicated with the throttling component;
the third four-way valve is arranged between the throttling component and the indoor heat exchanger, and a ninth end of the third four-way valve can be communicated with the throttling component, a tenth end of the third four-way valve can be communicated with the compressor, an eleventh end of the third four-way valve can be communicated with the indoor heat exchanger, and a twelfth end of the third four-way valve can also be communicated with the indoor heat exchanger.
In some embodiments, the second end of the first four-way valve is in communication with the fifth end of the second four-way valve, and the third end of the first four-way valve is in communication with the twelfth end of the third four-way valve.
In some embodiments, the sixth port of the second four-way valve is in communication with one end of the outdoor heat exchanger and the seventh port of the second four-way valve is in communication with the other end of the outdoor heat exchanger.
In some embodiments, the tenth port of the third four-way valve is in communication with one end of the indoor heat exchanger and the tenth port of the third four-way valve is in communication with the other end of the indoor heat exchanger.
In some embodiments, an outdoor fan is further disposed at the outdoor heat exchanger, the outdoor fan blows air in a direction toward the outdoor heat exchanger, the outdoor heat exchanger includes a first serpentine heat exchange tube section, and a flow direction of refrigerant in the first serpentine heat exchange tube section is opposite to a blowing direction of the outdoor fan.
In some embodiments, the outdoor fan is an axial fan.
In some embodiments, an indoor fan is further disposed at the indoor heat exchanger, the indoor fan blows air in a direction toward the indoor heat exchanger, the indoor heat exchanger includes a second serpentine heat exchange tube section, and a flow direction of refrigerant in the second serpentine heat exchange tube section is opposite to a blowing direction of the indoor fan.
In some embodiments, the indoor fan is an axial fan.
In some embodiments, a filter is further provided on the refrigerant line between the outdoor heat exchanger and the throttling part; and/or the throttling component is in the structure of an electronic expansion valve.
The present disclosure also provides a control method of the heat pump system as set forth in any one of the above, including:
a detection step for detecting the operation mode of the heat pump system;
a judging step of judging whether the operation mode is a cooling mode or a heating mode;
a control step, when the operation mode is a refrigeration mode, controlling the first end and the second end of the first four-way valve to be communicated, and controlling the third end and the fourth end to be communicated; controlling the fifth end of the second four-way valve to be communicated with the sixth end and the seventh end to be communicated with the eighth end; controlling the ninth end and the tenth end of the third four-way valve to be communicated, and controlling the tenth end and the twelfth end to be communicated;
when the operation mode is a heating mode, controlling the first end and the third end of the first four-way valve to be communicated, and controlling the second end and the fourth end of the first four-way valve to be communicated; controlling the fifth end of the second four-way valve to be communicated with the seventh end, and controlling the sixth end to be communicated with the eighth end; and controlling the ninth end of the third four-way valve to be communicated with the eleventh end and the tenth end to be communicated with the twelfth end.
The present disclosure also provides an air conditioner comprising the heat pump system of any one of the preceding claims.
The heat pump system, the control method and the air conditioner have the following beneficial effects:
the present disclosure provides a refrigerant compressor having a first, a second and a third four-way valves disposed in a refrigerant line, the first four-way valve disposed at a discharge end of a compressor, the second four-way valve disposed between the compressor and an outdoor heat exchanger, the third four-way valve disposed between a throttle member and an indoor heat exchanger, and the specific communication mode can be carried out, the flow direction of the refrigerant can be controlled by the linkage of a plurality of four-way valves, the heat pump system is ensured to be in the cooling and heating states, the flow directions of the refrigerants flowing through the outdoor heat exchanger and the indoor heat exchanger are not changed, so that the refrigerating and heating states are realized, the heat pump system has the advantages that the effect of countercurrent heat exchange of the indoor fin heat exchanger and the outdoor fin heat exchanger is achieved, the problem that the heat pump system cannot realize countercurrent heat exchange of the indoor fin heat exchanger and the outdoor fin heat exchanger in a refrigerating and heating state at the same time is solved, the heat exchange efficiency is improved, the heating capacity and the energy efficiency ratio of the heat pump system are improved, and the performance of the heat pump system is improved; the improvement of the heat exchange efficiency of the heat exchanger is beneficial to improving the evaporation temperature of the heat pump machine during heating in winter, thereby prolonging the frosting time and reducing the frosting amount.
Drawings
FIG. 1 is a system diagram of a heat pump system of the present disclosure in a cooling mode;
fig. 2 is a system diagram of the heat pump system of the present disclosure in a heating mode.
The reference numerals are represented as:
1. a compressor; 1a, an exhaust end; 1b, a suction end; 2. an outdoor heat exchanger; 3. an outdoor fan; 4. a filter; 5. a throttling member; 6. an indoor heat exchanger; 7. an indoor fan; 8. a first four-way valve; d1, first end; c1, second end; e1, third end; s1, a fourth end; 9. a second four-way valve; d2, fifth end; c2, sixth end; e2, seventh end; s2, an eighth end; 10. a third four-way valve; d3, ninth end; c3, tenth end; e3, eleventh end; s3, a twelfth end; .
Detailed Description
As shown in fig. 1-2, the present disclosure provides a heat pump system comprising:
the system comprises a compressor 1, an outdoor heat exchanger 2, an indoor heat exchanger 6 and a throttling component 5; the air conditioner also comprises a first four-way valve 8, a second four-way valve 9 and a third four-way valve 10, wherein a first end D1 of the first four-way valve 8 is communicated with the exhaust end 1a of the compressor 1, a second end C1 can be communicated with the outdoor heat exchanger 2, a third end E1 can be communicated with the indoor heat exchanger 6, and a fourth end S1 can be communicated with the suction end 1b of the compressor 1;
the second four-way valve 9 is disposed between the compressor 1 and the outdoor heat exchanger 2, and a fifth end D2 of the second four-way valve 9 can be communicated with the compressor 1, a sixth end C2 can be communicated with the outdoor heat exchanger 2, a seventh end E2 can also be communicated with the outdoor heat exchanger 2, and an eighth end S2 can be communicated with the throttling component 5;
the third four-way valve 10 is disposed between the throttling member 5 and the indoor heat exchanger 6, and a ninth end D3 of the third four-way valve 10 can communicate with the throttling member 5, a tenth end C3 can communicate with the compressor 1, an eleventh end E3 can communicate with the indoor heat exchanger 6, and a twelfth end S3 can also communicate with the indoor heat exchanger 6.
The present disclosure provides a refrigerant compressor having a first, a second and a third four-way valves disposed in a refrigerant line, the first four-way valve disposed at a discharge end of a compressor, the second four-way valve disposed between the compressor and an outdoor heat exchanger, the third four-way valve disposed between a throttle member and an indoor heat exchanger, and the specific communication mode can be carried out, the flow direction of the refrigerant can be controlled by the linkage of a plurality of four-way valves, the heat pump system is ensured to be in the cooling and heating states, the flow directions of the refrigerants flowing through the outdoor heat exchanger and the indoor heat exchanger are not changed, so that the refrigerating and heating states are realized, the heat pump system has the advantages that the effect of countercurrent heat exchange of the indoor fin heat exchanger and the outdoor fin heat exchanger is achieved, the problem that the heat pump system cannot realize countercurrent heat exchange of the indoor fin heat exchanger and the outdoor fin heat exchanger in a refrigerating and heating state at the same time is solved, the heat exchange efficiency is improved, the heating capacity and the energy efficiency ratio of the heat pump system are improved, and the performance of the heat pump system is improved; the improvement of the heat exchange efficiency of the heat exchanger is beneficial to improving the evaporation temperature of the heat pump machine during heating in winter, thereby prolonging the frosting time and reducing the frosting amount.
According to the heat pump unit, 1 four-way valve is additionally arranged in front of an indoor heat exchanger and an outdoor heat exchanger respectively, when the heat pump unit is switched from cooling to heating, the four-way valve at the outlet of a compressor is reversed, and the four-way valve in front of the two units is also reversed. For two devices (an outdoor heat exchanger and an indoor heat exchanger), after two times of direction change, the refrigerant can still flow into the two devices from the original inlet, so that the problem that the heat pump machine cannot realize the countercurrent heat exchange of both the indoor fin heat exchanger and the outer fin heat exchanger in the refrigerating state and the heating state simultaneously because the refrigerating flow directions are different in the refrigerating state and the heating state is solved.
In some embodiments, the second end C1 of the first four-way valve 8 is in communication with the fifth end D2 of the second four-way valve 9, and the third end E1 of the first four-way valve 8 is in communication with the twelfth end S3 of the third four-way valve 10. This is a further preferred configuration of the present disclosure, that is, the second terminal C1 of the first four-way valve is connected to the fifth terminal D2 of the second four-way valve, which enables effective communication between the compressor and the outdoor heat exchanger and effective switching control, and the third terminal E1 of the first four-way valve 8 is connected to the twelfth terminal S3 of the third four-way valve 10, which enables effective communication between the compressor and the indoor heat exchanger and effective switching control.
In some embodiments, the sixth end C2 of the second four-way valve 9 is in communication with one end of the outdoor heat exchanger 2, and the seventh end E2 of the second four-way valve 9 is in communication with the other end of the outdoor heat exchanger 2. This is a further preferred configuration of the present disclosure, that is, a further preferred connection form of the second four-way valve, the sixth port C2 is communicated with one end of the outdoor heat exchanger 2, and the seventh port E2 of the second four-way valve 9 is communicated with the other end of the outdoor heat exchanger 2, which can provide an effective communication action to the outdoor heat exchanger and can perform an effective switching control.
In some embodiments, the tenth end C3 of the third four-way valve 10 is in communication with one end of the indoor heat exchanger 6, and the tenth end E3 of the third four-way valve 10 is in communication with the other end of the indoor heat exchanger 6. This is a further preferred configuration of the present disclosure, that is, a further preferred connection form of the third four-way valve, the tenth port C3 is communicated with one end of the indoor heat exchanger 6, and the tenth port E3 of the third four-way valve 10 is communicated with the other end of the indoor heat exchanger 6, which can provide an effective communication action to the indoor heat exchanger and can perform an effective switching control.
In some embodiments, an outdoor fan 3 is further disposed at the outdoor heat exchanger 2, the outdoor fan 3 blows air in a direction toward the outdoor heat exchanger 2, the outdoor heat exchanger 2 includes a first serpentine heat exchange tube section, and a flow direction of refrigerant in the first serpentine heat exchange tube section is opposite to a blowing direction of the outdoor fan 3. This outdoor fan through outdoor heat exchanger department setting can play the effect that drives the air current and flow for form the heat transfer effect between air current and the outdoor heat exchanger, outdoor heat exchanger is set to the structure of first snakelike heat transfer pipe section, can form the elbow structure of buckling in succession, and the air flow direction is opposite with the refrigerant flow direction of snakelike pipeline section, can strengthen the heat convection effect between refrigerant and the air, improves heat exchange efficiency.
In some embodiments, the outdoor fan 3 is an axial fan. The outdoor fan is an axial flow fan which is the preferred structural form.
In some embodiments, an indoor fan 7 is further disposed at the indoor heat exchanger 6, the indoor fan 7 blows air in a direction toward the indoor heat exchanger 6, the indoor heat exchanger 6 includes a second serpentine heat exchange tube section, and a flow direction of refrigerant in the second serpentine heat exchange tube section is opposite to a blowing direction of the indoor fan 7. This openly indoor fan through indoor heat exchanger department setting can play the effect that drives the air current and flow for form the heat transfer effect between air current and the indoor heat exchanger, the structure of second snakelike heat exchange tube section is set to the indoor heat exchanger, can form the elbow structure of buckling in succession, and the air flow direction is opposite with the refrigerant flow direction of snakelike pipeline section, can strengthen the heat convection effect between refrigerant and the air, improves heat exchange efficiency.
In some embodiments, the indoor fan 7 is an axial fan. The indoor fan is an axial flow fan, and the preferable structure form is that the indoor fan is an axial flow fan.
In some embodiments, a filter 4 is further provided on the refrigerant line between the outdoor heat exchanger 2 and the throttling part 5; and/or the throttling component 5 is an electronic expansion valve. The electronic expansion valve can effectively filter the refrigerant entering the indoor side by arranging the filter, and is the preferred structural form of the throttling component.
The present disclosure also provides a control method of the heat pump system as set forth in any one of the above, including:
a detection step for detecting the operation mode of the heat pump system;
a judging step of judging whether the operation mode is a cooling mode or a heating mode;
a control step of controlling the first end D1 and the second end C1 of the first four-way valve to be communicated and the third end E1 and the fourth end S1 to be communicated when the operation mode is a cooling mode; the fifth end D2 of the second four-way valve 9 is controlled to be communicated with the sixth end C2, the seventh end E2 and the eighth end S2; the ninth end D3 of the third four-way valve 10 is controlled to be communicated with the tenth end C3, the eleventh end E3 and the twelfth end S3;
when the operation mode is the heating mode, controlling the first end D1 and the third end E1 of the first four-way valve to be communicated, and controlling the second end C1 and the fourth end S1 to be communicated; the fifth end D2 of the second four-way valve 9 is controlled to be communicated with the seventh end E2, the sixth end C2 and the eighth end S2; the ninth port D3 of the third four-way valve 10 is controlled to communicate with the eleventh port E3, the tenth port C3 and the twelfth port S3.
In the embodiment of the present disclosure, when the heat pump is refrigerating, the three four-way valves are in the power-off state, and at this time, the point D1 communicates with the point C1, the point S1 communicates with the point E1, the point D2 communicates with the point C2, the point S2 communicates with the point E2, the point D3 communicates with the point C3, and the point S3 communicates with the point E3, as shown in fig. 1, the high-temperature and high-pressure refrigerant discharged from the compressor flows through the point D1 and the point C1 of the first four-way valve 8, and then flows into the outdoor heat exchanger 2 through the point D2 and the point C2 of the second four. In this case, as shown in fig. 1, the refrigerant flows into the outdoor heat exchanger from the point C2 and flows out from the point E2, and the refrigerant flow direction and the air flow direction are in counter-flow. The refrigerant discharged from the outdoor heat exchanger exits from a point S2 of the second four-way valve 9, is throttled and flows into a point D3 of the third four-way valve 10, and then flows into the indoor heat exchanger 6 from a point C3. At this time, as shown in fig. 1, the refrigerant flows into the indoor heat exchanger from the point C3 and then flows out from the point E3, the refrigerant flow direction is in counter-current to the air flow direction, and the refrigerant flowing out of the indoor heat exchanger passes through the point S3 of the third four-way valve 10, the points E1 and S1 of the first four-way valve 8, and then returns to the compressor suction port, thereby completing the refrigeration cycle. Therefore, when the heat pump machine is used for refrigerating, both the two devices realize countercurrent heat exchange.
When the heat pump machine is switched to the heating mode, the three four-way valves are in an electrified state, the sliding blocks in the valves move to enable the point D1 to be communicated with the point E1, the point C1 to be communicated with the point S1, the point D2 to be communicated with the point E2, the point C2 to be communicated with the point S2, the point D3 to be communicated with the point E3, and the point C3 to be communicated with the point S3, as shown in fig. 2, high-temperature and high-pressure refrigerant discharged by the compressor flows through the point D1 and the point E1 of the first four-way valve 8, and then flows into the indoor heat exchanger 6 through the points S85. At this time, the refrigerant flow direction and the air flow direction of the indoor heat exchanger are as shown in fig. 2, the refrigerant still flows into the indoor heat exchanger from the point C3 and then flows out from the point E3, and the refrigerant flow direction and the air flow direction form a counter flow. The refrigerant flowing out of the indoor heat exchanger exits from a point D3 of the third four-way valve, is throttled and flows into a point S2 of the second four-way valve 9, and then flows into the outdoor heat exchanger 2 from a point C2. At this time, as shown in fig. 2, the refrigerant flows into the outdoor heat exchanger from the point C2 and then flows out from the point E2, the refrigerant flow direction is in counter-flow to the air flow direction, and the refrigerant flowing out of the outdoor heat exchanger passes through the point D2 of the second four-way valve 9, the points C1 and S1 of the first four-way valve 8, and then returns to the suction port of the compressor, thereby completing the heating cycle. Therefore, when the heat pump machine heats, the two devices realize countercurrent heat exchange.
To sum up, no matter the heat pump machine that this patent provided is in refrigeration or heating state, the refrigerant flow direction in indoor, outer ware all forms with the air current to flow to the contrary, has improved heat exchange efficiency and air conditioner performance, has improved evaporating temperature, improves the frosting problem.
The present disclosure also provides an air conditioner comprising the heat pump system of any one of the preceding claims.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present disclosure, and these modifications and variations should also be regarded as the protection scope of the present disclosure.
Claims (11)
1. A heat pump system, characterized by: the method comprises the following steps:
the system comprises a compressor (1), an outdoor heat exchanger (2), an indoor heat exchanger (6) and a throttling component (5); the air conditioner further comprises a first four-way valve (8), a second four-way valve (9) and a third four-way valve (10), wherein a first end (D1) of the first four-way valve (8) is communicated with a discharge end (1a) of the compressor (1), a second end (C1) of the first four-way valve can be communicated with the outdoor heat exchanger (2), a third end (E1) of the first four-way valve can be communicated with the indoor heat exchanger (6), and a fourth end (S1) of the first four-way valve can be communicated with a suction end (1b) of the compressor (1);
the second four-way valve (9) is arranged between the compressor (1) and the outdoor heat exchanger (2), and a fifth end (D2) of the second four-way valve (9) can be communicated with the compressor (1), a sixth end (C2) can be communicated with the outdoor heat exchanger (2), a seventh end (E2) can also be communicated with the outdoor heat exchanger (2), and an eighth end (S2) can be communicated with the throttling component (5);
the third four-way valve (10) is arranged between the throttling component (5) and the indoor heat exchanger (6), and a ninth end (D3) of the third four-way valve (10) can be communicated with the throttling component (5), a tenth end (C3) can be communicated with the compressor (1), a tenth end (E3) can be communicated with the indoor heat exchanger (6), and a twelfth end (S3) can also be communicated with the indoor heat exchanger (6).
2. The heat pump system of claim 1, wherein:
the second terminal (C1) of the first four-way valve (8) is in communication with the fifth terminal (D2) of the second four-way valve (9), and the third terminal (E1) of the first four-way valve (8) is in communication with the twelfth terminal (S3) of the third four-way valve (10).
3. The heat pump system of claim 1, wherein:
the sixth end (C2) of the second four-way valve (9) is communicated with one end of the outdoor heat exchanger (2), and the seventh end (E2) of the second four-way valve (9) is communicated with the other end of the outdoor heat exchanger (2).
4. The heat pump system of claim 1, wherein:
the tenth end (C3) of the third four-way valve (10) is communicated with one end of the indoor heat exchanger (6), and the tenth end (E3) of the third four-way valve (10) is communicated with the other end of the indoor heat exchanger (6).
5. The heat pump system according to any one of claims 1-4, wherein:
an outdoor fan (3) is further arranged at the outdoor heat exchanger (2), the outdoor fan (3) blows air towards the direction of the outdoor heat exchanger (2), the outdoor heat exchanger (2) comprises a first serpentine heat exchange pipe section, and the flowing direction of refrigerant in the first serpentine heat exchange pipe is opposite to the blowing direction of the outdoor fan (3).
6. The heat pump system of claim 5, wherein:
the outdoor fan (3) is an axial flow fan.
7. The heat pump system according to any one of claims 1-6, wherein:
an indoor fan (7) is further arranged at the indoor heat exchanger (6), the indoor fan (7) blows air towards the indoor heat exchanger (6), the indoor heat exchanger (6) comprises a second serpentine heat exchange pipe section, and the flowing direction of refrigerant in the second serpentine heat exchange pipe is opposite to the blowing direction of the indoor fan (7).
8. The heat pump system of claim 7, wherein:
the indoor fan (7) is an axial flow fan.
9. The heat pump system according to any one of claims 1-8, wherein:
a filter (4) is also arranged on a refrigerant pipeline between the outdoor heat exchanger (2) and the throttling component (5); and/or the throttling component (5) is in the structure of an electronic expansion valve.
10. A control method of the heat pump system according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
a detection step for detecting the operation mode of the heat pump system;
a judging step of judging whether the operation mode is a cooling mode or a heating mode;
a control step of controlling the first end (D1) and the second end (C1) of the first four-way valve to be communicated and the third end (E1) and the fourth end (S1) to be communicated when the operation mode is a cooling mode; controlling a fifth end (D2) of the second four-way valve (9) to communicate with a sixth end (C2), a seventh end (E2) and an eighth end (S2); controlling a ninth port (D3) of the third four-way valve (10) to communicate with a tenth port (C3), a tenth port (E3) and a twelfth port (S3);
when the operation mode is a heating mode, controlling the first end (D1) and the third end (E1) of the first four-way valve to be communicated, and controlling the second end (C1) and the fourth end (S1) to be communicated; controlling a fifth end (D2) of the second four-way valve (9) to communicate with a seventh end (E2), a sixth end (C2) and an eighth end (S2); the ninth port (D3) of the third four-way valve (10) is controlled to communicate with the tenth port (E3), the tenth port (C3) and the twelfth port (S3).
11. An air conditioner, characterized in that: comprising a heat pump system according to any one of claims 1-9.
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| CN202011450090.6A CN112444006A (en) | 2020-12-09 | 2020-12-09 | Heat pump system, control method and air conditioner |
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| CN202011450090.6A CN112444006A (en) | 2020-12-09 | 2020-12-09 | Heat pump system, control method and air conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963944A (en) * | 2021-03-26 | 2021-06-15 | 广东Tcl智能暖通设备有限公司 | Multi-connected air conditioner control system, method and device and storage medium |
| CN114562775A (en) * | 2022-04-27 | 2022-05-31 | 深圳市英威腾网能技术有限公司 | Air conditioning system and control method thereof |
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