CN215951815U - Heat pump system and air conditioning equipment - Google Patents
Heat pump system and air conditioning equipment Download PDFInfo
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- CN215951815U CN215951815U CN202122338386.5U CN202122338386U CN215951815U CN 215951815 U CN215951815 U CN 215951815U CN 202122338386 U CN202122338386 U CN 202122338386U CN 215951815 U CN215951815 U CN 215951815U
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Abstract
The utility model provides a heat pump system and air conditioning equipment. According to the heat pump system and the air conditioning equipment, different working modes such as refrigeration, heating, silencing, defrosting and oil return are realized through the control of the valve body assembly and the seventh valve and the ordered combination of the two indoor heat exchangers and the two outdoor heat exchangers, and the constant indoor temperature is ensured through a pure heat pump heating reheating technology in the running process of the working modes of compressor oil return and defrosting, so that the defects that the auxiliary heating is performed by adopting electric heating in the prior art and the energy consumption is effectively reduced are overcome.
Description
Technical Field
The utility model relates to the technical field of heat pumps, in particular to a heat pump system and air conditioning equipment.
Background
The oil return method of the existing air conditioner compressor is to improve the operation of the compressor, so that the oil return speed in a system pipeline is improved, the temperature is inevitably changed greatly, and the comfort level is influenced. The air conditioning system needs to be defrosted when running for a period of time, the temperature change can be caused when the air conditioning system enters the defrosting mode, if the defrosting time is long, the space temperature change can be more obvious, and the comfort degree is affected. The two conditions can cause the temperature of the space to be regulated to fluctuate, which affects the comfort
In the prior art, a non-stop defrosting mode is adopted or refrigeration oil return is added electric auxiliary heat, and the unit is started when entering a defrosting mode or refrigeration oil return, but the electric auxiliary heat has the problems of low energy efficiency and incapability of matching the heating quantity of the electric auxiliary heat with the refrigerating quantity brought by a heat pump, so that the constant indoor temperature is uncontrollable when the electric auxiliary heat is used for ensuring defrosting and the oil return of a compressor, and the energy consumption is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem of poor indoor temperature control effect of the air conditioning unit in the prior art, the heat pump system and the air conditioning equipment which ensure constant indoor temperature by switching the valve body assembly and the seventh valve are provided.
A heat pump system, comprising:
the indoor unit comprises a first indoor heat exchanger and a second indoor heat exchanger;
an outdoor unit including a compressor, a first outdoor heat exchanger, and a second outdoor heat exchanger;
a first communication pipeline is arranged between the first communication port of the first indoor heat exchanger and the second communication port of the first outdoor heat exchanger, a second communication pipeline is arranged between the first communication port of the second indoor heat exchanger and the second communication port of the second outdoor heat exchanger, a seventh valve (47) is arranged between the first communication pipeline and the second communication pipeline, and the seventh valve has a first state that the first communication pipeline and the second communication pipeline are mutually communicated and a second state that the first communication pipeline and the second communication pipeline are closed;
the valve body assembly is connected with the air suction port of the compressor, the air exhaust port of the compressor, the second communication port of the first indoor heat exchanger, the second communication port of the second indoor heat exchanger, the first communication port of the first outdoor heat exchanger and the first communication port of the second outdoor heat exchanger, and the valve body assembly is configured to control the flow direction of a refrigerant and/or the connection and disconnection of a connecting pipeline so as to realize the switching of the heat pump system under different working modes.
The heat pump system further comprises a first outdoor fan and a second outdoor fan, wherein the airflow of the first outdoor fan flows through the first outdoor heat exchanger, the airflow of the second outdoor fan flows through the second outdoor heat exchanger, and the working mode comprises a mute mode, and at most one of the first outdoor fan and the second outdoor fan works in the mute mode; or, in the silent mode, the rotation speed of the first outdoor fan and the rotation speed of the second outdoor fan are reduced to a first set rotation speed.
The heat pump system further comprises an indoor fan, airflow of the indoor fan sequentially passes through the first indoor heat exchanger and the second indoor heat exchanger, the working mode comprises a mute mode, and the rotating speed of the indoor fan is reduced to a second set rotating speed in the mute mode.
The operating modes further include a compressor oil return mode in which the first and second indoor heat exchangers are configured as condensers, the first and second indoor heat exchangers are configured as evaporators, and the seventh valve is in a second state; or, in the compressor oil return mode, the first and second indoor heat exchangers are configured as evaporators, the first and second outdoor heat exchangers are configured as condensers, and the seventh valve is in the second state.
The heat pump system further comprises a first throttling mechanism and a second throttling mechanism, wherein the first throttling mechanism is arranged on the first communicating pipeline, the first throttling mechanism can adjust the flow in the first communicating pipeline, the second throttling mechanism is arranged on the second communicating pipeline, and the second throttling mechanism can adjust the flow in the second communicating pipeline.
The valve body assembly comprises a first four-way valve and a second four-way valve, a D communication port of the first four-way valve and a D communication port of the second four-way valve are connected with an exhaust port of the compressor, an S communication port of the first four-way valve and an S communication port of the second four-way valve are connected with an air suction port of the compressor, a C communication port of the first four-way valve is connected with a first communication port of the first outdoor heat exchanger, a C communication port of the second four-way valve is connected with a first communication port of the second outdoor heat exchanger, an E communication port of the first four-way valve and an E communication port of the second four-way valve are communicated through a first pipeline, and a second communication port of the first indoor heat exchanger and a second communication port of the second indoor heat exchanger are connected with the first pipeline.
The valve body assembly further comprises a first valve, a second valve, a fourth valve and a fifth valve, a second communication port of the first indoor heat exchanger is connected with the exhaust port of the compressor through the first valve, a second communication port of the first indoor heat exchanger is connected with the first pipeline through the second valve, a second communication port of the second indoor heat exchanger is connected with the exhaust port of the compressor through the fourth valve, and a second communication port of the second indoor heat exchanger is connected with the first pipeline through the fifth valve.
The valve body assembly further comprises a third valve and a sixth valve, the E communication port of the first four-way valve is connected with the first pipeline through the third valve, and the E communication port of the second four-way valve is connected with the first pipeline through the sixth valve.
The valve body assembly further comprises an eighth valve and a ninth valve, the C communication port of the first four-way valve is connected with the first communication port of the first outdoor heat exchanger through the eighth valve, and the C communication port of the second four-way valve is connected with the first communication port of the second outdoor heat exchanger through the ninth valve.
The heat pump system further comprises an inter-tube heat exchanger, the inter-tube heat exchanger comprises a first pipeline and a second pipeline which exchange heat with each other, the eighth valve is communicated with the first outdoor heat exchanger through the first pipeline, and the ninth valve is communicated with the second outdoor heat exchanger through the second pipeline.
A control method of the heat pump system includes:
determining an operating mode of the heat pump system;
the valve body assembly and the seventh valve are controlled in operation according to the operating mode.
A control method of the heat pump system includes:
determining an operating mode of the heat pump system;
and controlling the actions of the first four-way valve, the second four-way valve, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve according to the working mode.
The working mode comprises a first refrigeration mode, when the working mode is the first refrigeration mode, a communication port D of a first four-way valve is communicated with a communication port C, a communication port E of the first four-way valve is communicated with a communication port S, a communication port D of a second four-way valve is communicated with the communication port C, the communication port E of the second four-way valve is communicated with the communication port S, a second valve, a third valve, a fifth valve, a sixth valve, an eighth valve and a ninth valve are switched to a conducting state, and the first valve, the fourth valve and the seventh valve are switched to a disconnected state.
The working mode comprises a second refrigeration mode, when the working mode is the second refrigeration mode, a communication port D of the first four-way valve is communicated with a communication port C, a communication port E of the first four-way valve is communicated with a communication port S, the second valve, the third valve and the eighth valve are switched to be in a conducting state, and the first valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve and the ninth valve are switched to be in a disconnecting state.
The working mode comprises a third refrigeration mode, when the working mode is the third refrigeration mode, a communication port D of the second four-way valve is communicated with a communication port C, a communication port E of the second four-way valve is communicated with a communication port S, the fifth valve, the sixth valve and the ninth valve are switched to be in a conducting state, and the first valve, the second valve, the third valve, the fourth valve, the seventh valve and the eighth valve are switched to be in a disconnecting state.
The working mode comprises a first mute refrigeration mode, when the working mode is the first mute refrigeration mode, a communication port D and a communication port C of a first four-way valve are communicated, a communication port E and a communication port S of the first four-way valve are communicated, a communication port D and a communication port C of a second four-way valve are communicated, a communication port E and a communication port S of the second four-way valve are communicated, a third valve, a fifth valve, a sixth valve, a seventh valve, an eighth valve and a ninth valve are switched to a conducting state, and the first valve, the second valve and the fourth valve are switched to a disconnecting state.
The working mode comprises a second mute refrigeration mode, when the working mode is the second mute refrigeration mode, the D communication port and the C communication port of the first four-way valve are communicated, the E communication port and the S communication port of the first four-way valve are communicated, the D communication port and the C communication port of the second four-way valve are communicated, the E communication port and the S communication port of the second four-way valve are communicated, the second valve, the third valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve are switched to a conducting state, and the first valve, the fifth valve and the fourth valve are switched to a disconnected state.
The working mode comprises a third mute refrigeration mode, when the working mode is the third mute refrigeration mode, the D communication port and the C communication port of the first four-way valve are communicated, the E communication port and the S communication port of the first four-way valve are communicated, the D communication port and the C communication port of the second four-way valve are communicated, the E communication port and the S communication port of the second four-way valve are communicated, the second valve, the third valve, the fifth valve, the sixth valve, the seventh valve and the eighth valve are switched to a conducting state, and the first valve, the fourth valve and the ninth valve are switched to a disconnected state.
The working mode comprises a fourth mute refrigeration mode, when the working mode is the fourth mute refrigeration mode, the D communication port and the E communication port of the first four-way valve are communicated, the C communication port and the S communication port of the first four-way valve are communicated, the D communication port and the C communication port of the second four-way valve are communicated, the E communication port and the S communication port of the second four-way valve are communicated, the second valve, the fifth valve, the sixth valve, the seventh valve and the ninth valve are switched to a conducting state, and the first valve, the third valve, the fourth valve and the eighth valve are switched to a disconnected state.
The working mode comprises a first heating mode, when the working mode is the first heating mode, a communication port D of the first four-way valve is communicated with a communication port E, a communication port C of the first four-way valve is communicated with a communication port S, a communication port D of the second four-way valve is communicated with the communication port E, a communication port C of the second four-way valve is communicated with the communication port S, the first valve, the fourth valve, the eighth valve and the ninth valve are switched to be in a conducting state, and the second valve, the third valve, the fifth valve, the sixth valve and the seventh valve are switched to be in a disconnecting state.
The working mode comprises a second heating mode, when the working mode is the second heating mode, the D communication port of the first four-way valve is communicated with the E communication port, the C communication port of the first four-way valve is communicated with the S communication port, the D communication port of the second four-way valve is communicated with the E communication port, the C communication port of the second four-way valve is communicated with the S communication port, the first valve and the eighth valve are switched to be in a conducting state, and the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the seventh valve and the ninth valve are switched to be in a disconnecting state.
The working mode comprises a third heating mode, when the working mode is the third heating mode, the D communication port of the first four-way valve is communicated with the E communication port, the C communication port of the first four-way valve is communicated with the S communication port, the D communication port of the second four-way valve is communicated with the E communication port, the C communication port of the second four-way valve is communicated with the S communication port, the fourth valve and the ninth valve are switched to be in a conducting state, and the first valve, the second valve, the third valve, the fifth valve, the sixth valve, the seventh valve and the eighth valve are switched to be in a disconnecting state.
The working mode comprises a first mute heating mode, when the working mode is the first mute heating mode, a communication port D of the first four-way valve is communicated with a communication port E, a communication port C of the first four-way valve is communicated with a communication port S, a communication port D of the second four-way valve is communicated with the communication port E, a communication port C of the second four-way valve is communicated with the communication port S, the first valve, the seventh valve, the eighth valve and the ninth valve are switched to be in a conducting state, and the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve are switched to be in a disconnecting state.
The working mode comprises a second mute heating mode, when the working mode is the second mute heating mode, the D communication port of the first four-way valve is communicated with the E communication port, the C communication port of the first four-way valve is communicated with the S communication port, the D communication port of the second four-way valve is communicated with the E communication port, the C communication port of the second four-way valve is communicated with the S communication port, the fourth valve, the seventh valve, the eighth valve and the ninth valve are switched to be in a conducting state, and the first valve, the second valve, the third valve, the fifth valve and the sixth valve are switched to be in a disconnecting state.
The working mode comprises a defrosting mode of the first outdoor heat exchanger, when the working mode is the defrosting mode of the first outdoor heat exchanger, the D communication port of the first four-way valve is communicated with the E communication port, the C communication port of the first four-way valve is communicated with the S communication port, the D communication port of the second four-way valve is communicated with the E communication port, the C communication port of the second four-way valve is communicated with the S communication port, the second valve, the fifth valve, the sixth valve, the seventh valve and the ninth valve are switched to a conducting state, and the first valve, the third valve, the fourth valve and the eighth valve are switched to a disconnected state.
The working mode comprises a defrosting mode of the second outdoor heat exchanger, when the working mode is the defrosting mode of the second outdoor heat exchanger, the D communication port of the first four-way valve is communicated with the E communication port, the C communication port of the first four-way valve is communicated with the S communication port, the D communication port of the second four-way valve is communicated with the E communication port, the C communication port of the second four-way valve is communicated with the S communication port, the first valve, the fourth valve, the seventh valve and the eighth valve are switched to a conducting state, and the second valve, the third valve, the fifth valve, the sixth valve and the ninth valve are switched to an off state.
The working mode comprises a first outdoor heat exchanger quick defrosting mode, when the working mode is the first outdoor heat exchanger quick defrosting mode, a communication port D of a first four-way valve is communicated with a communication port C, a communication port E of the first four-way valve is communicated with a communication port S, a communication port D of a second four-way valve is communicated with a communication port E, a communication port S of the second four-way valve is communicated with a communication port C, a second valve, a third valve, a fourth valve, a sixth valve, an eighth valve and a ninth valve are switched to a conducting state, and the first valve, the fifth valve, the sixth valve and the seventh valve are switched to a disconnecting state.
The working mode comprises a second outdoor heat exchanger rapid defrosting mode, when the working mode is the second outdoor heat exchanger rapid defrosting mode, a D communication port of a first four-way valve is communicated with an E communication port, an S communication port and a C communication port of the first four-way valve are communicated, a D communication port and a C communication port of a second four-way valve are communicated, an S communication port and an E communication port of the second four-way valve are communicated, the first valve, the fifth valve, the sixth valve, the eighth valve and the ninth valve are switched to a conducting state, and the second valve, the third valve, the fourth valve and the seventh valve are switched to an off state.
The working mode also comprises a compressor oil return mode, and when the working mode is the compressor oil return mode, the running frequency of the compressor is improved.
A control device of a heat pump system, comprising:
a memory; and a processor coupled to the memory, the processor configured to execute the control method described above based on instructions stored in the memory.
An air conditioning equipment comprises the heat pump system and/or the control device.
A computer readable storage medium storing computer instructions for a processor to execute the above-described control method or to execute the above-described control method.
According to the heat pump system and the air conditioning equipment, different working modes such as refrigeration, heating, silencing, defrosting and oil return are realized through the control of the valve body assembly and the seventh valve and the ordered combination of the two indoor heat exchangers and the two outdoor heat exchangers, and the constant indoor temperature is ensured through a pure heat pump heating reheating technology in the running process of the working modes of compressor oil return and defrosting, so that the defects that the auxiliary heating is performed by adopting electric heating in the prior art and the energy consumption is effectively reduced are overcome.
Drawings
Fig. 1 is a schematic structural diagram of a heat pump system according to an embodiment of the present invention;
fig. 2 is a refrigerant flow diagram of the heat pump system in the first refrigeration mode according to the embodiment of the present invention;
fig. 3 is a refrigerant flow diagram of the heat pump system in the second refrigeration mode according to the embodiment of the present invention;
fig. 4 is a refrigerant flow diagram of the heat pump system in the first silent cooling mode according to the embodiment of the present invention;
fig. 5 is a refrigerant flow diagram of the heat pump system in the third silent cooling mode according to the embodiment of the present invention;
fig. 6 is a refrigerant flow diagram of the heat pump system in the first heating mode according to the embodiment of the present invention;
fig. 7 is a refrigerant flow diagram of the heat pump system in the third heating mode according to the embodiment of the present invention;
fig. 8 is a refrigerant flow diagram of the heat pump system in the first silent heating mode according to the embodiment of the present invention;
fig. 9 is a refrigerant flow diagram of the heat pump system in the defrosting mode of the second outdoor heat exchanger according to the embodiment of the present invention;
fig. 10 is a refrigerant flow diagram of the heat pump system in the second outdoor heat exchanger rapid defrosting mode according to the embodiment of the present invention;
fig. 11 illustrates a control method of the heat pump system according to the embodiment of the present invention;
fig. 12 shows another control method of the heat pump system according to the embodiment of the present invention;
in the figure:
11. a first indoor heat exchanger; 12. a second indoor heat exchanger; 21. a compressor; 22. a first outdoor heat exchanger; 23. a second outdoor heat exchanger; 31. a first communicating pipe; 32. a second communication line; 47. a seventh valve; 51. a first outdoor fan; 52. a second outdoor fan; 6. an indoor fan; 71. a first throttle mechanism; 72. a second throttling mechanism; 81. a first four-way valve; 82. a second four-way valve; 41. a first valve; 42. a second valve; 43. a third valve; 44. a fourth valve; 45. a fifth valve; 46. a sixth valve; 48. an eighth valve; 49. a ninth valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The heat pump system as shown in fig. 1 to 10 includes:
an indoor unit including a first indoor heat exchanger 11 and a second indoor heat exchanger 12;
an outdoor unit including a compressor 21, a first outdoor heat exchanger 22, and a second outdoor heat exchanger 23;
a first communication line 31 is provided between the first communication port of the first indoor heat exchanger 11 and the second communication port of the first outdoor heat exchanger 22, a second communication line 32 is provided between the first communication port of the second indoor heat exchanger 12 and the second communication port of the second outdoor heat exchanger 23, a seventh valve 47 is provided between the first communication line 31 and the second communication line 32, and the seventh valve 47 has a first state in which the first communication line 31 and the second communication line 32 are communicated with each other and a second state in which the first communication line 31 and the second communication line 32 are closed;
and the valve body assembly is connected with the air suction port of the compressor 21, the air exhaust port of the compressor 21, the second communication port of the first indoor heat exchanger 11, the second communication port of the second indoor heat exchanger 12, the first communication port of the first outdoor heat exchanger 22 and the first communication port of the second outdoor heat exchanger 23, and is configured to control the flow direction of a refrigerant and/or the on-off of a connecting pipeline so as to realize the switching of the heat pump system in different working modes.
The compressor oil return of the air conditioning unit and the air conditioning system need defrosting treatment when running for a period of time, and the technical scheme adopted in the prior art ensures constant indoor temperature through electric auxiliary heat, however, the energy efficiency of the existing electric auxiliary heat is low, and the problems that the heating quantity of the electric auxiliary heat cannot be matched with the refrigerating quantity of an indoor heat exchanger exist, therefore, the valve body assembly and the seventh valve 47 are arranged, the flow direction of a refrigerant is controlled through the switching of the valve body assembly, meanwhile, the seventh valve 47 can further control the direction of the refrigerant entering the indoor heat exchanger, the indoor heat exchanger and an outdoor heat exchanger can be selected to work in the refrigerating and heating processes, so that various refrigerating effects and various heating effects are realized, and meanwhile, the noise generated by the air conditioning unit in the working process can be effectively reduced through the control of an indoor unit and an outdoor unit, and further, in the oil return and defrosting processes, the first indoor heat exchanger 11 and the second indoor heat exchanger 12 are used for respectively refrigerating and heating the refrigerant, the final air outlet temperature of the indoor unit can be kept constant, and the control of the indoor temperature by the air conditioner unit is effectively improved.
The heat pump system further includes a first outdoor fan 51 and a second outdoor fan 52, an air flow of the first outdoor fan 51 passes through the first outdoor heat exchanger 22, an air flow of the second outdoor fan 52 passes through the second outdoor heat exchanger 23, and the operation mode includes a silent mode in which at most one of the first outdoor fan 51 and the second outdoor fan 52 is operated; or, in the mute mode, the rotation speed of the first outdoor fan 51 and the rotation speed of the second outdoor fan 52 are reduced to a first set rotation speed. In order to reduce the noise generated by the fan, when the load demand of the air conditioning unit is not high, only the first outdoor heat exchanger 22 and the first outdoor fan 51 or only the second outdoor heat exchanger 23 and the second outdoor fan 52 may be used to exchange heat, so as to effectively reduce the noise generated by the fan, or when the first outdoor heat exchanger 22 and the second outdoor heat exchanger 23 are simultaneously adopted, the purpose of reducing the noise may be achieved by reducing the rotation speed of the first outdoor fan 51 and the second outdoor fan 52.
The heat pump system further comprises an indoor fan 6, airflow of the indoor fan 6 sequentially passes through the first indoor heat exchanger 11 and the second indoor heat exchanger 12, the working mode comprises a mute mode, and the rotating speed of the indoor fan 6 is reduced to a second set rotating speed in the mute mode. In order to reduce the noise generated by the air conditioning unit indoors, when the load demand of the air conditioning unit is not high, the rotating speed of the indoor fan 6 can be reduced to reduce wind dryness, so that the purpose of reducing the noise is achieved.
The operation modes further include a compressor oil return mode in which the first and second indoor heat exchangers 11, 23 are configured as condensers, the first and second outdoor heat exchangers 22, 12 are configured as evaporators, and the seventh valve 47 is in a second state; or, in the compressor oil return mode, the first and second indoor heat exchangers 11 and 23 are configured as evaporators, the first and second outdoor heat exchangers 22 and 12 are configured as condensers, and the seventh valve 47 is in the second state. That is, two mutually independent heat exchange flow paths are formed in the whole heat pump system, one of the heat exchange flow paths heats the indoor space, the other heat exchange flow path cools the indoor space and defrosts the corresponding outdoor heat exchanger of the outdoor unit, the two heat exchange flow paths are used for cooling and heating the indoor space at the same time, and the reheating process is carried out on the air entering the indoor space, so that the indoor temperature is ensured to be constant.
The heat pump system further comprises a first throttling mechanism 71 and a second throttling mechanism 72, the first throttling mechanism 71 is arranged on the first communication pipeline 31, the first throttling mechanism 71 can adjust the flow in the first communication pipeline 31, the second throttling mechanism 72 is arranged on the second communication pipeline 32, and the second throttling mechanism 72 can adjust the flow in the second communication pipeline 32. The heat exchange amount of the first indoor heat exchanger 11 and the second indoor heat exchanger 12 to the air flow in the indoor unit is controlled by controlling the flow of the refrigerant entering the first indoor heat exchanger 11 and the second indoor heat exchanger 12, so that the indoor outlet air temperature is ensured to be constant. Preferably, the first throttling mechanism 71 and the second throttling mechanism 72 are both flow rate regulating valves.
The valve body assembly comprises a first four-way valve 81 and a second four-way valve 82, a D communication port of the first four-way valve 81 and a D communication port of the second four-way valve 82 are connected with an exhaust port of the compressor 21, an S communication port of the first four-way valve 81 and an S communication port of the second four-way valve 82 are connected with a suction port of the compressor 21, a C communication port of the first four-way valve 81 is connected with a first communication port of the first outdoor heat exchanger 22, a C communication port of the second four-way valve 82 is connected with a first communication port of the second outdoor heat exchanger 23, an E communication port of the first four-way valve 81 and an E communication port of the second four-way valve 82 are communicated through a first pipeline, and a second communication port of the first indoor heat exchanger 11 and a second communication port of the second indoor heat exchanger 12 are connected with the first pipeline. By switching the first four-way valve 81 and the second four-way valve 82, the flow direction of the exhaust gas of the compressor 21 is controlled, so that the first indoor heat exchanger 11, the second indoor heat exchanger 12, the first outdoor heat exchanger 22 and the second outdoor heat exchanger 23 are switched to be used as condensers or evaporators, and the heat pump system is switched to different working modes.
The valve body assembly further includes a first valve 41, a second valve 42, a fourth valve 44, and a fifth valve 45, the second communication port of the first indoor heat exchanger 11 is connected to the discharge port of the compressor 21 through the first valve 41, the second communication port of the first indoor heat exchanger 11 is connected to the first pipe through the second valve 42, the second communication port of the second indoor heat exchanger 12 is connected to the discharge port of the compressor 21 through the fourth valve 44, and the second communication port of the second indoor heat exchanger 12 is connected to the first pipe through the fifth valve 45. At most one of the first valve 41 and the second valve 42 is in a conduction state to prevent the refrigerant from directly flowing out without passing through the first indoor heat exchanger 11, and similarly, at most one of the fourth valve 44 and the fifth valve 45 is in a conduction state to prevent the refrigerant from directly flowing out without passing through the second indoor heat exchanger 12, thereby ensuring the normal operation of the heat pump system.
The valve body assembly further includes a third valve 43 and a sixth valve 46, the communication E port of the first four-way valve 81 is connected to the first line through the third valve 43, and the communication E port of the second four-way valve 82 is connected to the first line through the sixth valve 46. Whether or not the communication port E of the first four-way valve 81 and the communication port E of the second four-way valve 82 communicate with the first line is controlled by the control of the third valve 43 and the sixth valve 46.
The valve body assembly further includes an eighth valve 48 and a ninth valve 49, the communication port C of the first four-way valve 81 is connected to the first communication port of the first outdoor heat exchanger 22 through the eighth valve 48, and the communication port C of the second four-way valve 82 is connected to the first communication port of the second outdoor heat exchanger 23 through the ninth valve 49. Whether the refrigerant passes through the first communication line 31, that is, whether the refrigerant passes through the first indoor heat exchanger 11 and the first outdoor heat exchanger 22, is controlled by the eighth valve 48, and similarly, whether the refrigerant passes through the second communication line 32, that is, whether the refrigerant passes through the second indoor heat exchanger 12 and the second outdoor heat exchanger 23, is controlled by the ninth valve 49.
The heat pump system further comprises an inter-tube heat exchanger, the inter-tube heat exchanger comprises a first pipeline and a second pipeline which exchange heat with each other, the eighth valve 48 is communicated with the first outdoor heat exchanger 22 through the first pipeline, and the ninth valve 49 is communicated with the second outdoor heat exchanger 23 through the second pipeline. The refrigerants in the first pipeline and the second pipeline can exchange heat, and the control of the heat pump system on the indoor temperature is further improved.
As shown in fig. 11, a control method of the heat pump system includes:
determining an operating mode of the heat pump system;
the action of the valve body assembly and the seventh valve 47 is controlled according to the operation mode.
As shown in fig. 12, a control method of the heat pump system includes:
determining an operating mode of the heat pump system;
the operations of the first four-way valve 81, the second four-way valve 82, the first valve 41, the second valve 42, the third valve 43, the fourth valve 44, the fifth valve 45, the sixth valve 46, the seventh valve 47, the eighth valve 48, and the ninth valve 49 are controlled according to the operation mode.
When a cooling demand exists in a room and the cooling demand is large, the operation modes include a first cooling mode, when the operation mode is the first cooling mode, the communication port D of the first four-way valve 81 is communicated with the communication port C, the communication port E and the communication port S of the first four-way valve 81 are communicated, the communication port D of the second four-way valve 82 is communicated with the communication port C, the communication port E and the communication port S of the second four-way valve 82 are communicated, the second valve 42, the third valve 43, the fifth valve 45, the sixth valve 46, the eighth valve 48, and the ninth valve 49 are switched to the on state, and the first valve 41, the fourth valve 44, and the seventh valve 47 are switched to the off state. In the first cooling mode, the exhaust gas of the compressor 21 is divided into two parts, one part of the exhaust gas sequentially passes through the first four-way valve 81, the eighth valve 48, the first outdoor heat exchanger 22, the first throttling mechanism 71, the first indoor heat exchanger 11 and the first four-way valve 81 and flows back into the compressor 21, the other part of the exhaust gas sequentially passes through the second four-way valve 82, the ninth valve 49, the second outdoor heat exchanger 23, the second throttling mechanism 72, the second indoor heat exchanger 12 and the second four-way valve 82 and flows back into the compressor 21, and at this time, the first indoor heat exchanger 11 and the second indoor heat exchanger 12 both cool in the indoor unit, so that the full-load cooling of the indoor space is ensured.
When the cooling load demand in the room is low, the operation modes include the second cooling mode, and when the operation mode is the second cooling mode, the communication port D of the first four-way valve 81 communicates with the communication port C, the communication port E and the communication port S of the first four-way valve 81 communicate with each other, the second valve 42, the third valve 43, and the eighth valve 48 are switched to the on state, and the first valve 41, the fourth valve 44, the fifth valve 45, the sixth valve 46, the seventh valve 47, and the ninth valve 49 are switched to the off state. In the second cooling mode, the discharge air of the compressor 21 is returned to the compressor 21 only through the first four-way valve 81, the eighth valve 48, the first outdoor heat exchanger 22, the first throttle mechanism 71, the first indoor heat exchanger 11, the second valve 42, and the first four-way valve 81, and at this time, only the first indoor heat exchanger 11 cools the room while only the first outdoor heat exchanger 22 exchanges heat.
When the cooling load demand in the room is low, the operation modes include a third cooling mode, and when the operation mode is the third cooling mode, the communication port D of the second four-way valve 82 communicates with the communication port C, the communication port E and the communication port S of the second four-way valve 82 communicate with each other, the fifth valve 45, the sixth valve 46, and the ninth valve 49 are switched to the on state, and the first valve 41, the second valve 42, the third valve 43, the fourth valve 44, the seventh valve 47, and the eighth valve 48 are switched to the off state. In the third cooling mode, the discharge air of the compressor 21 returns to the compressor 21 only through the second four-way valve 82, the ninth valve 49, the second outdoor heat exchanger 23, the second throttling mechanism 72, the second indoor heat exchanger 12, the fifth valve 45, and the second four-way valve 82, and at this time, only the second indoor heat exchanger 12 cools the room while only the second outdoor heat exchanger 23 exchanges heat.
When the indoor cooling load demand is low and it is necessary to reduce outdoor noise, the operation modes include a first silent cooling mode, and when the operation mode is the first silent cooling mode, the D communication port and the C communication port of the first four-way valve 81 are communicated, the E communication port and the S communication port of the first four-way valve 81 are communicated, the D communication port and the C communication port of the second four-way valve 82 are communicated, the E communication port and the S communication port of the second four-way valve 82 are communicated, the third valve 43, the fifth valve 45, the sixth valve 46, the seventh valve 47, the eighth valve 48, and the ninth valve 49 are switched to the on state, and the first valve 41, the second valve 42, and the fourth valve 44 are switched to the off state. At this time, the exhaust gas of the compressor 21 is divided into two parts, one part flows to the second indoor heat exchanger 12 through the first four-way valve 81, the eighth valve 48, the first outdoor heat exchanger 22 and the seventh valve 47, the other part flows to the second indoor heat exchanger 12 through the second four-way valve 82, the ninth valve 49 and the second outdoor heat exchanger 23, and after converging in the second indoor heat exchanger 12, the exhaust gas is divided into two parts through the fifth valve 45, one part flows back to the compressor 21 through the first four-way valve 81, and the other part flows back to the compressor 21 through the second four-way valve 82, that is, when the load demand of the heat pump system is low, the refrigerants after heat exchange by the first outdoor heat exchanger 22 and the second outdoor heat exchanger 23 both flow through the second indoor heat exchanger 12 for refrigeration, so that the outdoor heat exchange amount is distributed to the first outdoor heat exchanger 22 and the second outdoor heat exchanger 23 on the premise of ensuring the indoor refrigeration amount, at this time, the rotation speed of the first outdoor fan 51 and the rotation speed of the second outdoor fan 52 can be reduced, thereby effectively reducing the outdoor fan noise.
When the indoor cooling load demand is low and it is necessary to reduce outdoor noise, the operation modes include a second silent cooling mode, and when the operation mode is the second silent cooling mode, the communication port D and the communication port C of the first four-way valve 81 are communicated, the communication port E and the communication port S of the first four-way valve 81 are communicated, the communication port D and the communication port C of the second four-way valve 82 are communicated, the communication port E and the communication port S of the second four-way valve 82 are communicated, the second valve 42, the third valve 43, the sixth valve 46, the seventh valve 47, the eighth valve 48, and the ninth valve 49 are switched to the on state, and the first valve 41, the fifth valve 45, and the fourth valve 44 are switched to the off state. At this time, the exhaust gas of the compressor 21 is divided into two parts, one part flows to the first indoor heat exchanger 11 through the first four-way valve 81, the eighth valve 48 and the first outdoor heat exchanger 22, the other part flows to the first indoor heat exchanger 11 through the second four-way valve 82, the ninth valve 49, the second outdoor heat exchanger 23 and the seventh valve 47, and after converging in the first indoor heat exchanger 11, the exhaust gas is divided into two parts through the second valve 42, one part flows back to the compressor 21 through the first four-way valve 81, the other part flows back to the compressor 21 through the second four-way valve 82, when the load demand of the heat pump system is low, the refrigerants after heat exchange by the first outdoor heat exchanger 22 and the second outdoor heat exchanger 23 both flow through the first indoor heat exchanger 11 for refrigeration, so that the outdoor heat exchange amount is distributed to the first outdoor heat exchanger 22 and the second outdoor heat exchanger 23 on the premise of ensuring the indoor refrigeration amount, at this time, the rotation speed of the first outdoor fan 51 and the rotation speed of the second outdoor fan 52 can be reduced, thereby effectively reducing the outdoor fan noise.
When the cooling load demand in the room is low and the noise in the room needs to be reduced, the operation modes include a third silent cooling mode, and when the operation mode is the third silent cooling mode, the communication port D and the communication port C of the first four-way valve 81 are communicated, the communication port E and the communication port S of the first four-way valve 81 are communicated, the communication port D and the communication port C of the second four-way valve 82 are communicated, the communication port E and the communication port S of the second four-way valve 82 are communicated, the second valve 42, the third valve 43, the fifth valve 45, the sixth valve 46, the seventh valve 47, and the eighth valve 48 are switched to the on state, and the first valve 41, the fourth valve 44, and the ninth valve 49 are switched to the off state. At this time, the discharge air of the compressor 21 is divided into two parts after passing through the first four-way valve 81, the eighth valve 48 and the first outdoor heat exchanger 22, one part of the discharge air passes through the first indoor heat exchanger 11 and the second valve 42 and then flows back to the first pipeline, the other part of the discharge air passes through the seventh valve 47, the second indoor heat exchanger 12 and the fifth valve 45 and then flows back to the first pipeline, a part of the refrigerant in the first pipeline passes through the third valve 43 and the first four-way valve 81 and flows back to the compressor 21, and the other part of the discharge air passes through the sixth valve 46 and the second four-way valve 82 and flows back to the compressor 21.
When the cooling load demand in the room is low and the noise in the room needs to be reduced, the operation modes include a fourth silent cooling mode, and when the operation mode is the fourth silent cooling mode, the D communication port and the E communication port of the first four-way valve 81 are communicated, the C communication port and the S communication port of the first four-way valve 81 are communicated, the D communication port and the C communication port of the second four-way valve 82 are communicated, the E communication port and the S communication port of the second four-way valve 82 are communicated, the second valve 42, the fifth valve 45, the sixth valve 46, the seventh valve 47, and the ninth valve 49 are switched to the on state, and the first valve 41, the third valve 43, the fourth valve 44, and the eighth valve 48 are switched to the off state. At this time, the discharge air of the compressor 21 is divided into two parts after passing through the second four-way valve 82, the ninth valve 49 and the second outdoor heat exchanger 23, one part of the discharge air passes through the second indoor heat exchanger 12 and the fifth valve 45 and then flows back to the first pipeline, the other part of the discharge air passes through the seventh valve 47, the first indoor heat exchanger 11 and the second valve 42 and then flows back to the first pipeline, a part of the refrigerant in the first pipeline passes through the third valve 43 and the first four-way valve 81 and flows back to the compressor 21, and the other part of the discharge air passes through the sixth valve 46 and the second four-way valve 82 and flows back to the compressor 21.
When a heating demand exists in a room and the heating demand is high, the operation modes include a first heating mode, when the operation mode is the first heating mode, the D communication port of the first four-way valve 81 is communicated with the E communication port, the C communication port of the first four-way valve 81 is communicated with the S communication port, the D communication port of the second four-way valve 82 is communicated with the E communication port, the C communication port of the second four-way valve 82 is communicated with the S communication port, the first valve 41, the fourth valve 48, the eighth valve 49 and the ninth valve 41 are switched to the on state, and the second valve 42, the third valve 43, the fifth valve 45, the sixth valve 46 and the seventh valve 47 are switched to the off state. At this time, the discharge air of the compressor 21 is divided into two parts, one part of which flows back to the compressor 21 through the first valve 41, the first indoor heat exchanger 11, the first outdoor heat exchanger 22, the eighth valve 48, and the first four-way valve 81, and the other part of which flows back to the compressor 21 through the fourth valve 44, the second indoor heat exchanger 12, the second outdoor heat exchanger 23, the ninth valve 49, and the second four-way valve 82.
When the indoor heating demand load is small, the operation modes include the second heating mode, and when the operation mode is the second heating mode, the D communication port of the first four-way valve 81 communicates with the E communication port, the C communication port of the first four-way valve 81 communicates with the S communication port, the D communication port of the second four-way valve 82 communicates with the E communication port, the C communication port of the second four-way valve 82 communicates with the S communication port, the first valve 41 and the eighth valve 48 are switched to the on state, and the second valve 42, the third valve 43, the fourth valve 44, the fifth valve 45, the sixth valve 46, the seventh valve 47, and the ninth valve 49 are switched to the off state. At this time, the discharge air of the compressor 21 is returned to the compressor 21 only through the first valve 41, the first indoor heat exchanger 11, the first outdoor heat exchanger 22, the eighth valve 48, and the first four-way valve 81.
When the indoor heating demand load is small, the operation modes include a third heating mode, and when the operation mode is the third heating mode, the D communication port of the first four-way valve 81 communicates with the E communication port, the C communication port of the first four-way valve 81 communicates with the S communication port, the D communication port of the second four-way valve 82 communicates with the E communication port, the C communication port of the second four-way valve 82 communicates with the S communication port, the fourth valve 44 and the ninth valve 49 are switched to the on state, and the first valve 41, the second valve 42, the third valve 43, the fifth valve 45, the sixth valve 46, the seventh valve 47, and the eighth valve 48 are switched to the off state. At this time, the discharge air of the compressor 21 is returned to the compressor 21 only through the fourth valve 44, the second indoor heat exchanger 12, the second outdoor heat exchanger 23, the ninth valve 49, and the second four-way valve 82.
When the indoor heating requirement is low and outdoor noise needs to be reduced, the operation modes include a first mute heating mode, when the operation mode is the first mute heating mode, the D communication port of the first four-way valve 81 is communicated with the E communication port, the C communication port of the first four-way valve 81 is communicated with the S communication port, the D communication port of the second four-way valve 82 is communicated with the E communication port, the C communication port of the second four-way valve 82 is communicated with the S communication port, the first valve 41, the seventh valve 47, the eighth valve 48 and the ninth valve 49 are switched to the on state, and the second valve 42, the third valve 43, the fourth valve 44, the fifth valve 45 and the sixth valve 46 are switched to the off state. At this time, the exhaust gas of the compressor 21 passes through the first valve 41 and the first indoor heat exchanger 11 in sequence and is divided into two parts, one part of the exhaust gas passes through the first outdoor heat exchanger 22, the eighth valve 48 and the first four-way valve 81 and flows back to the compressor 21, and the other part of the exhaust gas passes through the seventh valve 47, the second outdoor heat exchanger 23, the ninth valve 49 and the second four-way valve 82 and flows back to the compressor 21.
When the indoor heating requirement is low and outdoor noise needs to be reduced, the operation modes include a second mute heating mode, when the operation mode is the second mute heating mode, the D communication port of the first four-way valve 81 is communicated with the E communication port, the C communication port of the first four-way valve 81 is communicated with the S communication port, the D communication port of the second four-way valve 82 is communicated with the E communication port, the C communication port of the second four-way valve 82 is communicated with the S communication port, the fourth valve 44, the seventh valve 47, the eighth valve 48 and the ninth valve 49 are switched to the on state, and the first valve 41, the second valve 42, the third valve 43, the fifth valve 45 and the sixth valve 46 are switched to the off state. At this time, the exhaust gas of the compressor 21 passes through the fourth valve 44 and the second indoor heat exchanger 12 in sequence and is divided into two parts, one part of the exhaust gas passes through the seventh valve 47, the first outdoor heat exchanger 22, the eighth valve 48 and the first four-way valve 81 and flows back to the compressor 21, and the other part of the exhaust gas passes through the second outdoor heat exchanger 23, the ninth valve 49 and the second four-way valve 82 and flows back to the compressor 21.
When the indoor heating requirement is low and indoor noise needs to be reduced or defrosting of the first outdoor heat exchanger 22 needs to be performed, the operation mode includes a defrosting mode of the first outdoor heat exchanger 22, when the operation mode is the defrosting mode of the first outdoor heat exchanger 22, the communication port D of the first four-way valve 81 is communicated with the communication port E, the communication port C of the first four-way valve 81 is communicated with the communication port S, the communication port D of the second four-way valve 82 is communicated with the communication port E, the communication port C of the second four-way valve 82 is communicated with the communication port S, the second valve 42, the fifth valve 45, the sixth valve 46, the seventh valve 47 and the ninth valve 49 are switched to the on state, and the first valve 41, the third valve 43, the fourth valve 44 and the eighth valve 48 are switched to the off state. At this time, the exhaust gas of the compressor 21 passes through the second four-way valve 82 and the sixth valve 46 and is divided into two parts, one part passes through the second valve 42, the first indoor heat exchanger 11 and the seventh valve 47 and then flows to the second outdoor heat exchanger 23, the other part passes through the fifth valve 45 and the second indoor heat exchanger 12 and then flows to the second outdoor heat exchanger 23, passes through the second outdoor heat exchanger 23 and then flows back to the compressor 21 through the ninth valve 49 and the second four-way valve 82. At this time, no refrigerant flows in the first outdoor heat exchanger 22, the first outdoor heat exchanger 22 can perform self-defrosting under the condition of natural temperature, and meanwhile, the indoor unit simultaneously adopts the first indoor heat exchanger 11 and the second indoor heat exchanger 12 to perform heating, so that the rotating speed of the indoor fan 6 can be reduced, and the purpose of reducing indoor noise is achieved.
When the indoor heating requirement is low and indoor noise needs to be reduced or defrosting of the second outdoor heat exchanger 23 is needed, the operation mode includes a defrosting mode of the second outdoor heat exchanger 23, when the operation mode is the defrosting mode of the second outdoor heat exchanger 23, the communication port D of the first four-way valve 81 is communicated with the communication port E, the communication port C of the first four-way valve 81 is communicated with the communication port S, the communication port D of the second four-way valve 82 is communicated with the communication port E, the communication port C of the second four-way valve 82 is communicated with the communication port S, the first valve 41, the fourth valve 44, the seventh valve 47 and the eighth valve 48 are switched to a conducting state, and the second valve 42, the third valve 43, the fifth valve 45, the sixth valve 46 and the ninth valve 49 are switched to an off state. At this time, the exhaust gas of the compressor 21 is divided into two parts, one part flows to the first outdoor heat exchanger 22 after passing through the first valve 41 and the first indoor heat exchanger 11, and the other part flows to the first outdoor heat exchanger 22 after passing through the fourth valve 44, the second indoor heat exchanger 12 and the seventh valve 47, and flows back to the compressor 21 through the eighth valve 48 and the first four-way valve 81 after passing through the first outdoor heat exchanger 22. At this time, no refrigerant flows in the second outdoor heat exchanger 23, the second outdoor heat exchanger 23 can perform self-defrosting under the condition of natural temperature, and meanwhile, the indoor unit simultaneously adopts the first indoor heat exchanger 11 and the second indoor heat exchanger 12 to perform heating, so that the rotating speed of the indoor fan 6 can be reduced, and the purpose of reducing indoor noise is achieved.
When the outdoor environment temperature is low, a heating requirement exists in the indoor space and the first outdoor heat exchanger 22 needs defrosting at this time, the operation modes include a first outdoor heat exchanger 22 rapid defrosting mode, when the operation mode is the first outdoor heat exchanger 22 rapid defrosting mode, the communication port D of the first four-way valve 81 is communicated with the communication port C, the communication port E of the first four-way valve 81 is communicated with the communication port S, the communication port D of the second four-way valve 82 is communicated with the communication port E, the communication port S of the second four-way valve 82 is communicated with the communication port C, the second valve 42, the third valve 43, the fourth valve 44, the sixth valve 46, the eighth valve 48 and the ninth valve 49 are switched to the conducting state, and the first valve 41, the fifth valve 45, the sixth valve 46 and the seventh valve 47 are switched to the disconnecting state. At this time, the exhaust gas of the compressor 21 is divided into two parts, one part of the exhaust gas flows back to the compressor 21 through the first four-way valve 81, the eighth valve 48, the first outdoor heat exchanger 22, the first indoor heat exchanger 11, the second valve 42, and the first four-way valve 81, and the other part of the exhaust gas flows back to the compressor 21 through the fourth valve 44, the second indoor heat exchanger 12, the second outdoor heat exchanger 23, the ninth valve 49, and the second four-way valve 82. At this time, the exhaust gas of the compressor 21 enters the first outdoor heat exchanger 22 to defrost the first outdoor heat exchanger 22, meanwhile, the second outdoor heat exchanger 23 and the second indoor heat exchanger 12 ensure the indoor heating requirement, and the air flow of the indoor unit is cooled by the first indoor heat exchanger 11 and reheated by the second indoor heat exchanger 12, so as to finally ensure the constant temperature of the indoor outlet air.
When the outdoor environment temperature is low, a heating requirement exists in the indoor space and the second outdoor heat exchanger 23 needs to be defrosted, the working modes include a second outdoor heat exchanger 23 fast defrosting mode, when the working mode is the second outdoor heat exchanger 23 fast defrosting mode, the communication port D of the first four-way valve 81 is communicated with the communication port E, the communication port S and the communication port C of the first four-way valve 81 are communicated, the communication port D of the second four-way valve 82 is communicated with the communication port C, the communication port S of the second four-way valve 82 is communicated with the communication port E, the first valve 41, the fifth valve 45, the sixth valve 46, the eighth valve 48 and the ninth valve 49 are switched to the conducting state, and the second valve 42, the third valve 43, the fourth valve 44 and the seventh valve 47 are switched to the disconnecting state. At this time, the exhaust gas of the compressor 21 is divided into two parts, one part of the exhaust gas flows back to the compressor 21 through the second four-way valve 82, the ninth valve 49, the second outdoor heat exchanger 23, the second indoor heat exchanger 12, the fifth valve 45, and the second four-way valve 82, and the other part of the exhaust gas flows back to the compressor 21 through the first valve 41, the first indoor heat exchanger 11, the first outdoor heat exchanger 22, the eighth valve 48, and the first four-way valve 81. At this time, the exhaust gas of the compressor 21 enters the second outdoor heat exchanger 23 to defrost the second outdoor heat exchanger 23, meanwhile, the first outdoor heat exchanger 22 and the first indoor heat exchanger 11 ensure the indoor heating requirement, and the air flow of the indoor unit passes through the heating of the first indoor heat exchanger 11 and the cooling of the first indoor heat exchanger 11 to finally ensure the constant temperature of the indoor outlet air.
The operation modes further include a compressor oil return mode, and when the operation mode is the compressor oil return mode, the operation frequency of the compressor 21 is increased. The oil return of the compressor 21 can be realized by increasing the operating frequency of the compressor 21, and meanwhile, the indoor outlet air temperature can be kept constant according to the flow regulation of the first throttling mechanism 71 and the second throttling mechanism 72.
The valve body opening and closing relation table under each mode is summarized as follows: (four-way valve 0 is not energized, 1 is energized, the first valve to the ninth valve are normally closed, 0 is not energized, 1 is energized)
A control device of a heat pump system, comprising:
a memory; and a processor coupled to the memory, the processor configured to execute the control method described above based on instructions stored in the memory.
The memory may be a high-speed RAM memory, a non-volatile memory (non-volatile memory), or the like, and the memory may be a memory array. The storage may also be partitioned and the blocks may be combined into virtual volumes according to certain rules. The processor may be a central processing unit CPU, or an application Specific Integrated circuit asic, or one or more Integrated circuits configured to implement the control method of the heat pump system of the present disclosure.
An air conditioning equipment comprises the heat pump system and/or the control device.
A computer readable storage medium storing computer instructions for a processor to execute the above-described control method or to execute the above-described control method.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A heat pump system, characterized by: the method comprises the following steps:
an indoor unit comprising a first indoor heat exchanger (11) and a second indoor heat exchanger (12);
an outdoor unit including a compressor (21), a first outdoor heat exchanger (22), and a second outdoor heat exchanger (23);
a first communication pipeline (31) is arranged between the first communication port of the first indoor heat exchanger (11) and the second communication port of the first outdoor heat exchanger (22), a second communication pipeline (32) is arranged between the first communication port of the second indoor heat exchanger (12) and the second communication port of the second outdoor heat exchanger (23), a seventh valve (47) is arranged between the first communication pipeline (31) and the second communication pipeline (32), and the seventh valve (47) has a first state that the first communication pipeline (31) and the second communication pipeline (32) are communicated with each other and a second state that the first communication pipeline (31) and the second communication pipeline (32) are closed;
the heat pump system comprises a valve body assembly, the valve body assembly is connected with a suction port of the compressor (21), an exhaust port of the compressor (21), a second communication port of the first indoor heat exchanger (11), a second communication port of the second indoor heat exchanger (12), a first communication port of the first outdoor heat exchanger (22) and a first communication port of the second outdoor heat exchanger (23), and the valve body assembly is configured to control the flow direction of a refrigerant and/or the connection and disconnection of a connecting pipeline so as to realize the switching of the heat pump system under different working modes.
2. The heat pump system of claim 1, wherein: the heat pump system further includes a first outdoor fan (51) and a second outdoor fan (52), an air flow of the first outdoor fan (51) passes through the first outdoor heat exchanger (22), an air flow of the second outdoor fan (52) passes through the second outdoor heat exchanger (23), and the operation mode includes a silent mode in which at least one of the first outdoor fan (51) and the second outdoor fan (52) is operated; or, in the mute mode, the rotation speed of the first outdoor fan (51) and the rotation speed of the second outdoor fan (52) are reduced to a first set rotation speed.
3. The heat pump system of claim 1, wherein: the heat pump system further comprises an indoor fan (6), airflow of the indoor fan (6) sequentially passes through the first indoor heat exchanger (11) and the second indoor heat exchanger (12), the working mode comprises a mute mode, and the rotating speed of the indoor fan (6) is reduced to a second set rotating speed in the mute mode.
4. The heat pump system of claim 1, wherein: the operating modes further comprise a compressor oil return mode in which the first and second indoor heat exchangers (11, 23) are configured as condensers, the first and second outdoor heat exchangers (22, 12) are configured as evaporators, the seventh valve (47) is in a second state; or, in the compressor oil return mode, the first and second indoor heat exchangers (11, 23) are configured as evaporators, the first and second outdoor heat exchangers (22, 12) are configured as condensers, and the seventh valve (47) is in a second state.
5. The heat pump system of claim 1, wherein: the heat pump system further comprises a first throttling mechanism (71) and a second throttling mechanism (72), the first throttling mechanism (71) is arranged on the first communication pipeline (31), the first throttling mechanism (71) can adjust the flow rate in the first communication pipeline (31), the second throttling mechanism (72) is arranged on the second communication pipeline (32), and the second throttling mechanism (72) can adjust the flow rate in the second communication pipeline (32).
6. The heat pump system according to any one of claims 1 to 5, wherein: the valve body assembly comprises a first four-way valve (81) and a second four-way valve (82), a communication port D of the first four-way valve (81) and a communication port D of the second four-way valve (82) are both connected with an exhaust port of the compressor (21), an S communication port of the first four-way valve (81) and an S communication port of the second four-way valve (82) are both connected with a suction port of the compressor (21), a communication port C of the first four-way valve (81) is connected with a first communication port of the first outdoor heat exchanger (22), a communication port C of the second four-way valve (82) is connected with a first communication port of the second outdoor heat exchanger (23), the communication port E of the first four-way valve (81) is communicated with the communication port E of the second four-way valve (82) through a first pipeline, and a second communication port of the first indoor heat exchanger (11) and a second communication port of the second indoor heat exchanger (12) are both connected with the first pipeline.
7. The heat pump system of claim 6, wherein: the valve body assembly further comprises a first valve (41), a second valve (42), a fourth valve (44) and a fifth valve (45), a second communication port of the first indoor heat exchanger (11) is connected with an exhaust port of the compressor (21) through the first valve (41), a second communication port of the first indoor heat exchanger (11) is connected with the first pipeline through the second valve (42), a second communication port of the second indoor heat exchanger (12) is connected with an exhaust port of the compressor (21) through the fourth valve (44), and a second communication port of the second indoor heat exchanger (12) is connected with the first pipeline through the fifth valve (45).
8. The heat pump system of claim 7, wherein: the valve body assembly further comprises a third valve (43) and a sixth valve (46), wherein the communication port E of the first four-way valve (81) is connected with the first pipeline through the third valve (43), and the communication port E of the second four-way valve (82) is connected with the first pipeline through the sixth valve (46).
9. The heat pump system of claim 8, wherein: the valve body assembly further comprises an eighth valve (48) and a ninth valve (49), the communication port C of the first four-way valve (81) is connected with the first communication port of the first outdoor heat exchanger (22) through the eighth valve (48), and the communication port C of the second four-way valve (82) is connected with the first communication port of the second outdoor heat exchanger (23) through the ninth valve (49).
10. The heat pump system of claim 9, wherein: the heat pump system further comprises an inter-tube heat exchanger, the inter-tube heat exchanger comprises a first pipeline and a second pipeline which exchange heat with each other, the eighth valve (48) is communicated with the first outdoor heat exchanger (22) through the first pipeline, and the ninth valve (49) is communicated with the second outdoor heat exchanger (23) through the second pipeline.
11. An air conditioning apparatus characterized by: comprising a heat pump system according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122338386.5U CN215951815U (en) | 2021-09-24 | 2021-09-24 | Heat pump system and air conditioning equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122338386.5U CN215951815U (en) | 2021-09-24 | 2021-09-24 | Heat pump system and air conditioning equipment |
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| CN215951815U true CN215951815U (en) | 2022-03-04 |
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| CN202122338386.5U Active CN215951815U (en) | 2021-09-24 | 2021-09-24 | Heat pump system and air conditioning equipment |
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2021
- 2021-09-24 CN CN202122338386.5U patent/CN215951815U/en active Active
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