Heat pump system and air conditioner

Abstract

The application discloses a heat pump system and an air conditioner, wherein the exhaust port of a compressor, the return air port of the compressor, an indoor heat exchanger and an outdoor heat exchanger are connected with a reversing valve; the cooling module comprises a convection heat dissipation assembly and a refrigerant heat dissipation assembly, the indoor heat exchanger, an electronic expansion valve, a refrigerant pipe in the refrigerant heat dissipation assembly and the outdoor heat exchanger are sequentially connected; the refrigerant pipe, the electronic expansion valve and the outdoor heat exchanger are connected with a first refrigerant regulating assembly, the first refrigerant regulating assembly is arranged to limit the refrigerant flowing out of the electronic expansion valve to flow into the refrigerant pipe when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger, and to regulate the refrigerant to sequentially flow through the refrigerant pipe and the electronic expansion valve when the refrigerant flows from the outdoor heat exchanger to the indoor heat exchanger. The technical scheme of the application realizes that the heat pump system provided with the cooling module can realize heat dissipation, prevent the cooling module from condensation, realize frost-free defrosting and high-efficiency refrigeration operation.

Description

Technical Field

[0001] This invention relates to the field of heat pump technology, and in particular to a heat pump system and an air conditioner. Background Technology

[0002] Many heat pump systems incorporate a cooling module in their refrigerant circulation loop. During operation, this module uses medium-temperature refrigerant to dissipate heat from the electrical and control components within the heat pump system. To prevent condensation on the cooling module, an electronic expansion valve and a one-way throttling valve are installed at its two ends. During both the cooling and heating cycles, only the component at the cooling module outlet throttles the flow; the component at the inlet does not. This allows refrigerant to flow into the cooling module to dissipate heat from the components in both modes.

[0003] However, this system setup uses a one-way throttling valve for refrigerant heating and an electronic expansion valve for refrigerant cooling. Because the one-way throttling valve cannot adjust the opening, defrosting during the heating cycle requires stopping the system and switching to the cooling cycle to defrost the outdoor unit. This leads to fluctuations in indoor temperature during defrosting and generates noise from system components during the switching process, affecting user comfort. Conversely, using an electronic expansion valve for refrigerant heating and a one-way throttling valve for refrigerant cooling results in poor energy efficiency under low-load cooling operation because the one-way valve cannot adjust the opening. Therefore, current heat pump systems with cooling modules cannot effectively balance heat dissipation, prevention of condensation on the cooling module, continuous defrosting without stopping the system, and efficient cooling operation. Summary of the Invention

[0004] The main objective of this invention is to provide a heat pump system that can simultaneously achieve heat dissipation, prevent condensation on the cooling module, perform defrosting without stopping, and operate at high efficiency.

[0005] To achieve the above objectives, the present invention proposes a heat pump system, comprising a compressor, an indoor heat exchanger, a reversing valve, an outdoor heat exchanger, a cooling module, an electronic expansion valve, and a first refrigerant regulating component, wherein the exhaust port of the compressor, the return port of the compressor, the indoor heat exchanger, and the outdoor heat exchanger are all connected to the reversing valve.

[0006] The cooling module includes a convection heat dissipation component and a refrigerant heat dissipation component. Both the convection heat dissipation component and the refrigerant heat dissipation component are used for heat exchange connection with the heat-generating component. The refrigerant heat dissipation component includes a refrigerant pipe. The indoor heat exchanger, the electronic expansion valve, the refrigerant pipe, and the outdoor heat exchanger are connected in sequence.

[0007] The refrigerant pipe, the electronic expansion valve, and the outdoor heat exchanger are all connected to the first refrigerant regulating component. The first refrigerant regulating component is configured to switch the refrigerant state between a first state and a second state when the reversing valve is operating at different valve positions. The first state includes restricting the refrigerant flowing out of the electronic expansion valve from flowing into the refrigerant pipe when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger. The second state includes regulating the refrigerant to flow sequentially through the refrigerant pipe and the electronic expansion valve when the refrigerant flows from the outdoor heat exchanger to the indoor heat exchanger.

[0008] Optionally, the convection heat dissipation component and the refrigerant heat dissipation component are arranged at intervals to form a space for accommodating the heat-generating component.

[0009] Optionally, the refrigerant heat dissipation assembly further includes a first heat-conducting plate and a second heat-conducting plate disposed opposite to each other, the refrigerant pipe being sandwiched between the first heat-conducting plate and the second heat-conducting plate, and the first heat-conducting plate being configured to abut against the heat-generating component.

[0010] Optionally, the convection heat dissipation component and the refrigerant pipe are arranged side by side so that the convection heat dissipation component and the refrigerant pipe are connected to the same side of the heat-generating component for heat exchange.

[0011] Optionally, the heating component includes a circuit board and electronic components fixed on the circuit board;

[0012] The cooling module further includes a third heat-conducting plate and a fourth heat-conducting plate. The third heat-conducting plate has a first side and a second side that are arranged opposite to each other. The refrigerant pipe and the convection heat dissipation component are both abutted against the first side and are spaced apart. The second side is arranged to abut against the electronic component. The fourth heat-conducting plate abuts against the side of the refrigerant pipe that is away from the third heat-conducting plate.

[0013] Optionally, the convection heat dissipation assembly includes a fin assembly;

[0014] Optionally, the cooling module is located outdoors to exchange heat with the heating component located outdoors.

[0015] Optionally, the first refrigerant regulating component includes:

[0016] A first unidirectional flow guide component is disposed in the pipeline between the electronic expansion valve and the first end of the refrigerant pipe, and the first unidirectional flow guide component is configured to allow unidirectional flow from the first end of the refrigerant pipe to the electronic expansion valve.

[0017] The second unidirectional flow guide component is provided. The pipeline between the first unidirectional flow guide component and the electronic expansion valve is connected to the first end of the second unidirectional flow guide component. The second end of the second unidirectional flow guide component and the second end of the refrigerant pipe are both connected to the outdoor heat exchanger. The second unidirectional flow guide component is configured to conduct unidirectionally from the first end of the second unidirectional flow guide component to the second end of the second unidirectional flow guide component.

[0018] Optionally, the first height of the indoor heat exchanger is greater than the second height of the outdoor heat exchanger, and the second end of the second unidirectional flow guide assembly is connected to the second end of the refrigerant pipe to form a first position, which is connected to the outdoor heat exchanger.

[0019] The first refrigerant regulating component further includes a third unidirectional flow guiding component, which is disposed in the pipeline between the refrigerant pipe and the first position, and is configured to conduct unidirectionally from the first position to the refrigerant pipe.

[0020] Optionally, the outdoor heat exchanger includes a first heat exchange section and a second heat exchange section, a first end of the first heat exchange section is connected to a first end of the second heat exchange section to form a second position, and a second end of the second unidirectional flow guide assembly is connected to the second position.

[0021] The heat pump system further includes a second refrigerant regulating component. The second end of the refrigerant pipe is connected to the second end of the second heat exchange section, the second end of the first heat exchange section is connected to the reversing valve, and the pipeline between the refrigerant pipe and the second heat exchange section, as well as the pipeline between the first heat exchange section and the reversing valve, are all connected to the second refrigerant regulating component.

[0022] The second refrigerant regulating component is configured to cooperate with the first refrigerant regulating component to switch the refrigerant flow direction in the outdoor heat exchanger between a first flow direction and a second flow direction. The first flow direction is in which the refrigerant flows sequentially through the first heat exchange section and the second heat exchange section, and the second flow direction is in which the refrigerant flows through the first heat exchange section and the second heat exchange section respectively.

[0023] Optionally, the second refrigerant regulating component includes a first one-way valve, the pipeline between the second heat exchange section and the refrigerant pipe is connected to the first end of the first one-way valve, the pipeline between the first heat exchange section and the reversing valve is connected to the second end of the first one-way valve, and the first one-way valve is configured to conduct unidirectionally from the first end of the first one-way valve to the second end of the first one-way valve.

[0024] Optionally, the first refrigerant regulating component further includes a second one-way valve, which is located in the pipeline between the refrigerant pipe and the second heat exchange section, and is configured to allow one-way flow from the second heat exchange section to the refrigerant pipe.

[0025] Optionally, the first heat exchange section includes more than one parallel refrigerant flow path, and the number of refrigerant flow paths in the first heat exchange section is greater than or equal to the number of refrigerant flow paths in the second heat exchange section.

[0026] Optionally, the outdoor heat exchanger further includes a third heat exchange section, a fourth heat exchange section, and a fifth heat exchange section, and the heat pump system further includes a third refrigerant regulating component;

[0027] The first end of the third heat exchange section is connected to the first end of the fourth heat exchange section to form a third position. The third position and the first end of the fifth heat exchange section are both connected to the second end of the second unidirectional flow guide assembly. The second end of the refrigerant pipe is connected to the first end of the fifth heat exchange section.

[0028] The second end of the third heat exchange section is connected to the reversing valve, the second end of the fourth heat exchange section is connected to the second end of the fifth heat exchange section to form a fourth position, and the pipeline between the third heat exchange section and the reversing valve and the fourth position are both connected to the third refrigerant regulating component.

[0029] The third refrigerant regulating component is configured to cooperate with the first refrigerant regulating component to switch the refrigerant flow direction in the outdoor heat exchanger between the third flow direction and the fourth flow direction. The third flow direction is in which the refrigerant flows through the third heat exchange section, the fourth heat exchange section and the fifth heat exchange section respectively. The fourth flow direction is in which the refrigerant flows through the third heat exchange section, the fourth heat exchange section and the fifth heat exchange section in sequence.

[0030] Optionally, the third refrigerant regulating component includes a third one-way valve, the fourth position is connected to the first end of the third one-way valve, the pipeline between the third heat exchange section and the reversing valve is connected to the second end of the third one-way valve, and the third one-way valve is configured to allow unidirectional flow from the first end of the third one-way valve to the second end of the third one-way valve.

[0031] Optionally, the first pipeline is defined as the pipeline between the first one-way flow guide assembly and the electronic expansion valve. The second one-way flow guide assembly further includes a fourth one-way valve and a fifth one-way valve. The first end of the fourth one-way valve and the first end of the fifth one-way valve are both connected to the first pipeline. The second end of the fourth one-way valve is connected to the third position. The second end of the fifth one-way valve is connected to the first end of the fifth heat exchange section. The pipeline between the fifth one-way valve and the fifth heat exchange section is connected to the second end of the refrigerant pipe.

[0032] The fourth check valve is configured to allow one-way flow from the first pipeline to the third position, and the fifth check valve is configured to allow one-way flow from the first pipeline to the fifth heat exchange section.

[0033] Optionally, the second pipeline is defined as the pipeline between the refrigerant pipe and the fifth heat exchange section. The first refrigerant regulating component further includes a sixth one-way valve, which is located in the second pipeline and is configured to allow one-way flow from the fifth heat exchange section to the refrigerant pipe.

[0034] Optionally, the third heat exchange section includes more than one parallel refrigerant flow path, the number of refrigerant flow paths in the third heat exchange section is greater than or equal to the number of refrigerant flow paths in the fourth heat exchange section, and the number of refrigerant flow paths in the fourth heat exchange section is greater than or equal to the number of refrigerant flow paths in the fifth heat exchange section.

[0035] To achieve the above objectives, the present invention also proposes an air conditioner comprising a heat pump system as described in any of the preceding claims.

[0036] In the heat pump system of this invention, the compressor and indoor and outdoor heat exchangers are all connected to a reversing valve. The refrigerant flow between the indoor and outdoor heat exchangers can be switched under the regulation of the reversing valve. The cooling module is equipped with a convection heat dissipation component and a refrigerant heat dissipation component to dissipate heat from the heat-generating components. The indoor heat exchanger, electronic expansion valve, refrigerant pipes in the refrigerant heat dissipation component, and outdoor heat exchanger are connected in sequence. Based on this, under the regulation of the first refrigerant regulation component, the refrigerant can flow through the electronic expansion valve for throttling and pressure reduction in any mode such as cooling, heating, or defrosting, meeting the large flow range required by the heat pump system during the refrigeration cycle to ensure the system's high efficiency. The system operates efficiently, and when defrosting is required during the heating cycle, the outdoor unit's refrigerant temperature can be increased by adjusting the opening of the electronic expansion valve, eliminating the need to switch to the cooling cycle for defrosting and achieving non-stop defrosting. In any mode, the refrigerant between the indoor and outdoor heat exchangers does not first pass through the electronic expansion valve for throttling and pressure reduction before flowing into the cooling module, effectively preventing condensation on the cooling module. Furthermore, the cooling module can adapt to different flow directions between the indoor and outdoor heat exchangers, employing either a single convection cooling method or a dual cooling method combining convection and refrigerant cooling to dissipate heat from the heating components, effectively improving the heat dissipation efficiency of the heating components. Based on this, the heat pump system can simultaneously achieve heat dissipation, prevention of condensation on the cooling module, non-stop defrosting, and efficient cooling operation. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of an embodiment of the heat pump system of the present invention;

[0039] Figure 2 This is a schematic diagram of the structure of a cooling module in the heat pump system of the present invention.

[0040] Figure 3 This is a schematic diagram of another embodiment of the cooling module in the heat pump system of the present invention;

[0041] Figure 4 for Figure 3 Top view of the intermediate cooling module;

[0042] Figure 5 This is a schematic diagram of another embodiment of the heat pump system of the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of another embodiment of the heat pump system of the present invention and a schematic diagram of the refrigerant flow direction when the reversing valve is in the first valve position;

[0044] Figure 7 This is a schematic diagram of the structure of another embodiment of the heat pump system of the present invention and a schematic diagram of the refrigerant flow direction when the reversing valve is in the second valve position;

[0045] Figure 8 This is a schematic diagram of the structure of another embodiment of the heat pump system of the present invention and a schematic diagram of the refrigerant flow direction when the reversing valve is in the first valve position;

[0046] Figure 9 This is a schematic diagram of another embodiment of the heat pump system of the present invention and a schematic diagram of the refrigerant flow direction when the reversing valve is in the second valve position.

[0047] Explanation of icon numbers:

[0048]

[0049]

[0050] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0052] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0053] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0054] This invention proposes a heat pump system designed to simultaneously achieve heat dissipation, prevent condensation on the cooling module 6, enable continuous defrosting, and ensure efficient cooling operation. In this embodiment, the heat pump system is located within an air conditioner. In other embodiments, the heat pump system may also be a system within other appliances requiring temperature regulation. The structure of the heat pump system is described in detail below:

[0055] In this embodiment, refer to Figure 1 ,as well as Figures 5 to 9 The heat pump system includes a compressor 1, an indoor heat exchanger 3, a reversing valve 2, an outdoor heat exchanger 4, an electronic expansion valve 5, a cooling module 6, and a first refrigerant regulating component 7. The exhaust port of the compressor 1, the return port of the compressor 1, the indoor heat exchanger 3, and the outdoor heat exchanger 4 are all connected to the reversing valve 2.

[0056] The cooling module 6 includes a convection heat dissipation component 62 and a refrigerant heat dissipation component 61. Both the convection heat dissipation component 62 and the refrigerant heat dissipation component 61 are used for heat exchange connection with the heating component 100. The refrigerant heat dissipation component 61 includes a refrigerant pipe 611. The indoor heat exchanger 3, the electronic expansion valve 5, the refrigerant pipe 611 and the outdoor heat exchanger 4 are connected in sequence.

[0057] The refrigerant pipe 611, the electronic expansion valve 5, and the outdoor heat exchanger 4 are all connected to the first refrigerant regulating component 7. The first refrigerant regulating component 7 is configured to switch the refrigerant state between a first state and a second state when the reversing valve 2 is operating at different valve positions. The first state includes restricting the refrigerant flowing out of the electronic expansion valve 5 from flowing from the indoor heat exchanger 3 to the outdoor heat exchanger 4 into the refrigerant pipe 611 when the refrigerant flows from the outdoor heat exchanger 4 to the indoor heat exchanger 3. The second state includes regulating the refrigerant to flow sequentially through the refrigerant pipe 611 and the electronic expansion valve 5 when the refrigerant flows from the outdoor heat exchanger 4 to the indoor heat exchanger 3.

[0058] The reversing valve 2 is specifically used to switch the refrigerant flow direction in the heat pump system. In this embodiment, the reversing valve 2 is a four-way valve. Specifically, the reversing valve 2 has a first port, a second port, a third port, and a fourth port. The exhaust port of the compressor 1, the return port of the compressor 1, the indoor heat exchanger 3, and the outdoor heat exchanger 4 are sequentially connected to the first port, the second port, the third port, and the fourth port. The reversing valve 2 has a first valve position and a second valve position. In the first valve position, the first port is connected to the third port, and the second port is connected to the fourth port. In the second valve position, the first port is connected to the fourth port, and the second port is connected to the third port.

[0059] The heating component 100 is specifically a component of the equipment installed in the heat pump system that generates heat during operation. The heating component 100 may include electrical controls located in the outdoor unit of the air conditioner, such as one or more electronic devices fixed on the circuit board 101.

[0060] The specific structure of the first refrigerant regulating component 7 is not specifically limited. Any device that enables the reversing valve 2 to switch the refrigerant state between the first and second states when operating in different valve positions can be used as the first refrigerant regulating component 7. Specifically, the first refrigerant regulating component 7 may include a combination of multiple one-way valve devices, a multi-way valve (such as a four-way valve), or a combination of more than one multi-way valve (such as two three-way valves). The first refrigerant regulating component 7 can be adapted to adjust the valve position of the reversing valve 2 to allow the refrigerant flowing into or stopping the refrigerant inflow into the refrigerant pipe 611 between the indoor heat exchanger 3 and the outdoor heat exchanger 4.

[0061] The heat exchange connection between the convection heat dissipation component 62 and the heat generation component 100 specifically refers to the connection relationship between the two components through direct connection or indirect connection via heat transfer components, thereby achieving heat conduction between them. Similarly, the heat exchange connection between the refrigerant heat dissipation component 61 and the heat generation component 100 specifically refers to the connection relationship between the refrigerant heat dissipation component 61 and the heat generation component 100 through direct connection or indirect connection via heat transfer components, thereby achieving heat conduction between them.

[0062] The convection heat dissipation component 62 is specifically a structural component that uses air convection to dissipate heat from the heat-generating component 100. In this embodiment, the convection heat dissipation component 62 includes a finned assembly, which specifically includes a plurality of spaced-apart fins. By increasing the heat dissipation surface of the heat-generating component 100, the heat from the heat-generating component 100 can be conducted to the finned assembly and fully contact and exchange heat with the flowing air, thereby achieving effective heat dissipation from the heat-generating component 100.

[0063] The refrigerant heat dissipation component 61 is a structural component that dissipates heat from the heating component 100 by exchanging heat with the refrigerant flowing through the refrigerant pipe 611. The medium-temperature refrigerant, which is not throttled by the electronic expansion valve 5, can flow into the refrigerant pipe 611 under the regulation of the first refrigerant regulating component 7 to exchange heat with the heating component 100.

[0064] The convection heat dissipation component 62 can be equipped with a fan. When the heat pump system is turned on, the fan can be turned on simultaneously. The fan drive can increase the airflow velocity in the space where the convection heat dissipation component 62 and the heat generation component 100 are located, thereby effectively improving the convection heat dissipation efficiency of the heat generation component 100.

[0065] In this embodiment, when the reversing valve 2 in the heat pump system operates in different valve positions, the refrigerant flow direction is as follows:

[0066] When the reversing valve 2 is in the first position, the heat pump system is in heating cycle. The refrigerant discharged from the compressor 1's exhaust port flows into the indoor heat exchanger 3 under the guidance of the reversing valve 2. The refrigerant flowing out of the indoor heat exchanger 3 flows into the electronic expansion valve 5 for throttling and pressure reduction. After the electronic expansion valve 5 throttles and reduces the pressure, the low-temperature, low-pressure refrigerant flowing out is prevented from flowing into the refrigerant pipe 611 under the regulation of the first refrigerant regulating component 7. Instead, it flows directly into the outdoor heat exchanger 4 for heat exchange. The refrigerant flowing out of the outdoor heat exchanger 4 flows back to the compressor 1's return port under the guidance of the reversing valve 2. During this process, the indoor heat exchanger 3 is in a condensing state releasing heat, and the outdoor heat exchanger 4 is in an evaporating state absorbing heat. There is no low-temperature refrigerant flowing into the refrigerant pipe 611. At this time, the refrigerant heat dissipation component 61 stops dissipating heat from the heating component 100, while the convection heat dissipation component 62 can maintain heat dissipation from the heating component 100 using convection. This effectively prevents condensation on the cooling module 6 while ensuring the heat dissipation effect of the heating component 100.

[0067] When the reversing valve 2 is in the second position, the heat pump system is in a refrigeration cycle. The refrigerant discharged from the compressor 1's exhaust port flows into the outdoor heat exchanger 4 under the guidance of the reversing valve 2. The refrigerant flowing out of the outdoor heat exchanger 4, under the regulation of the first refrigerant regulating component 7, first flows through the refrigerant pipe 611 and then through the electronic expansion valve 5 for throttling and pressure reduction. The refrigerant after throttling and pressure reduction flows into the indoor heat exchanger 3 for heat exchange. The refrigerant flowing out of the indoor heat exchanger 3 flows back to the compressor 1's return port under the guidance of the reversing valve 2. During this process, the indoor heat exchanger 3 is in an evaporating state absorbing heat, while the outdoor heat exchanger 4 is in a condensing state releasing heat. When the medium-temperature refrigerant flowing out of the outdoor heat exchanger 4 flows through the refrigerant pipe 611, it exchanges heat with the heating element 100 to dissipate heat from the heating element 100. At the same time, the convection heat dissipation component 62 can maintain convection to dissipate heat from the heating element 100, which can effectively prevent condensation on the cooling module 6 and improve the heat dissipation efficiency of the heating element 100.

[0068] Furthermore, the heat pump system of this embodiment can adapt to different needs and operate in different modes. The application of the heat pump system of this embodiment will be described below in conjunction with different operating conditions:

[0069] In heating mode, with the goal of raising the temperature of the target space (e.g., indoor environment), the reversing valve 2 can be controlled to operate in the first valve position mentioned above. The indoor heat exchanger 3 is in a condensing state to raise the ambient temperature of the target space where it is located. The electronic expansion valve 5 operates at a throttling opening to throttle and reduce the pressure of the refrigerant flowing through it. The specific opening of the electronic expansion valve 5 can be adjusted according to the actual load of the system to ensure the efficient operation of the system in heating mode.

[0070] In cooling or dehumidification mode, with the goal of reducing the temperature or humidity of the target space (e.g., indoor environment), the reversing valve 2 can be controlled to operate in the second valve position mentioned above. The indoor heat exchanger 3 is in a positive hot state to reduce the temperature and humidity of the target space. The electronic expansion valve 5 operates at a throttling opening to throttle and reduce the pressure of the refrigerant flowing through it. The specific opening of the electronic expansion valve 5 can be adjusted according to the actual load of the system, ensuring that the heat pump system can operate efficiently under both high and low loads in cooling or dehumidification mode.

[0071] In the first defrosting mode, with the goal of melting the frost on the outdoor heat exchanger 4, the reversing valve 2 can be controlled to operate in the first valve position as described above, the indoor heat exchanger 3 remains in a condensed state, and the electronic expansion valve 5 increases its opening to raise the temperature of the refrigerant flowing into the outdoor heat exchanger 4. The heat released by the heated refrigerant is used to melt the frost on the outdoor heat exchanger 4. The electronic expansion valve 5 can be increased to its maximum opening.

[0072] In the second defrosting mode, with the goal of melting the frost on the outdoor heat exchanger 4, the reversing valve 2 can be controlled to operate in the second valve position mentioned above. The indoor heat exchanger 3 is in an evaporation state, and the outdoor heat exchanger 4 is in a condensation state. The high-temperature refrigerant in the outdoor heat exchanger 4 releases heat to melt the frost on the outdoor heat exchanger 4.

[0073] In the heating mode of the heat pump system, the status parameters (such as outdoor ambient temperature and / or the temperature of outdoor heat exchanger 4) that characterize the frost layer on the outdoor heat exchanger 4 can be monitored. When the frost layer thickness characterized by the status parameters is less than the preset value, the heat pump system can operate in the first defrosting mode. In this mode, the reversing valve 2 maintains the first valve position, the compressor 1 remains open, and the electronic expansion valve 5 increases its opening (e.g., to the maximum opening) based on the current opening. During this process, the outdoor heat exchanger 4 can be defrosted simply by adjusting the opening of the electronic expansion valve 5. The reversing valve 2 does not need to switch its valve position, which helps to reduce the noise generated by the valve position switching of the reversing valve 22. The ability to defrost without stopping the system helps to improve the stability of the system operation. The indoor heat exchanger 3 maintains the condensation state and transfers heat to the indoor environment, which helps to reduce the indoor temperature fluctuation during the defrosting process and improve the comfort of indoor users during the defrosting process. When the frost thickness represented by the state parameter is greater than the preset value, the heat pump system can operate in the second defrosting mode. At this time, after the compressor 1 stops, the reversing valve 2 is switched from the first valve position to the second valve position. After the reversing valve 2 completes the valve position switch, the compressor 1 restarts. The electronic expansion valve 5 maintains operation at the throttling opening. The outdoor heat exchanger 4 is in a condensing state and uses the heat released by the high-temperature refrigerant to melt the thick frost on the outdoor heat exchanger 4.

[0074] In this embodiment of the invention, the compressor 1 and the indoor and outdoor heat exchangers in the heat pump system are both connected to the reversing valve 2. The refrigerant between the indoor and outdoor heat exchangers can switch its flow direction under the regulation of the reversing valve 2. The cooling module 6 is equipped with a convection heat dissipation component 62 and a refrigerant heat dissipation component 61 to dissipate heat from the heating component 100. The indoor heat exchanger 3, the electronic expansion valve 5, the refrigerant pipe 611 in the refrigerant heat dissipation component 61, and the outdoor heat exchanger 4 are connected in sequence. Based on this, under the regulation of the first refrigerant regulating component 7, the refrigerant can flow through the electronic expansion valve 5 for throttling and pressure reduction in any mode such as cooling, heating, or defrosting, meeting the large flow range required by the heat pump system during the refrigeration cycle. To ensure efficient system operation, when defrosting is required during the heating cycle, the outdoor unit refrigerant temperature can be increased by adjusting the opening of the electronic expansion valve 5, eliminating the need to switch to the cooling cycle for defrosting and achieving non-stop defrosting. In any mode, the refrigerant between the indoor and outdoor heat exchangers will not first pass through the electronic expansion valve 5 for throttling and pressure reduction before flowing into the cooling module 6, effectively preventing condensation on the cooling module 6. Furthermore, the cooling module 6 can adapt to different flow directions between the indoor and outdoor heat exchangers, employing either a single convection cooling method or a dual cooling method combining convection and refrigerant cooling to dissipate heat from the heating element 100, effectively improving the heat dissipation efficiency of the heating element 100. Based on this, the heat pump system can simultaneously achieve heat dissipation, prevention of condensation on the cooling module 6, non-stop defrosting, and efficient cooling operation.

[0075] Furthermore, in one embodiment of the present invention, the cooling module 6 is located outdoors to exchange heat with the heating component 100 located outdoors. Specifically, the convection heat dissipation component 62 can be correspondingly arranged with an outdoor fan, and the airflow driven by the outdoor fan can flow through the convection heat dissipation component 62 to dissipate heat from the outdoor heating component 100. When the outdoor ambient temperature is lower than the indoor ambient temperature, and the reversing valve 2 is operating in the first valve position, the heat dissipation function of the refrigerant heat dissipation component 61 stops. The convection heat dissipation effect of the outdoor air helps to ensure the heat dissipation efficiency of the heating component 100 during the heat pump cycle of the heat pump system.

[0076] In other embodiments, the cooling module 6 may also be located indoors for heat exchange connection with the indoor heating component 100.

[0077] Furthermore, in one embodiment of the present invention, referring to Figure 2 The convection heat dissipation component 62 and the refrigerant heat dissipation component 61 are arranged at intervals to form a receiving space for the heat-generating component 100.

[0078] Specifically, the distance between the convection heat dissipation component 62 and the refrigerant heat dissipation component 61 is less than or equal to the thickness of the heat-generating component 100, so that when the heat-generating component 100 is placed in the receiving space, both the convection heat dissipation component 62 and the refrigerant heat dissipation component 61 can abut against the surface of the heat-generating component 100.

[0079] Specifically, in this embodiment, the heating component 100 includes a circuit board 101 and an electronic component 102 fixed on the circuit board 101. The refrigerant heat dissipation component 61 is configured to abut against the electronic component 102, and the convection heat dissipation component 62 is configured to abut against the side of the circuit board 101 away from the electronic component 102. Since the side where the electronic component 102 is located has a larger heat volume, this configuration helps to improve the overall heat exchange efficiency of the heating component 100.

[0080] In this embodiment, through the above-mentioned settings, the convection heat dissipation component 62 and the refrigerant heat dissipation component 61 can combine to dissipate heat from different ends of the heat-generating component 100 when dissipating heat, effectively improving the heat dissipation efficiency of the heat-generating component 100.

[0081] Furthermore, in this embodiment, referring to Figure 2 The refrigerant heat dissipation assembly 61 further includes a first heat-conducting plate 612 and a second heat-conducting plate 613 disposed opposite to each other, and the refrigerant pipe 611 is sandwiched between the first heat-conducting plate 612 and the second heat-conducting plate 613. The first heat-conducting plate 612 is configured to abut against the heating component 100.

[0082] In this embodiment, both the first heat-conducting plate 612 and the second heat-conducting plate 613 are aluminum plates. In other embodiments, both the first heat-conducting plate 612 and the second heat-conducting plate 613 can have a heat-conducting structure, such as a copper plate or a graphite plate.

[0083] In this embodiment, through the above-described configuration, the cooling capacity of the refrigerant in the refrigerant pipe 611 can be evenly transferred to different positions of the heating element 100 via the first heat-conducting plate 612 to dissipate heat from the heating element 100, thereby effectively improving the heat dissipation efficiency of the heating element 100. The refrigerant pipe 611 is sandwiched between the two heat-conducting plates, which facilitates the installation and fixation of the refrigerant pipe 611 during heat exchange connection with the heating element 100, thus preventing vibration of the refrigerant pipe 611 during heat pump system operation from affecting structural stability and heat dissipation effect.

[0084] Furthermore, in one embodiment of the present invention, referring to Figure 3 and Figure 4 The convection heat dissipation component 62 and the refrigerant pipe 611 are arranged side by side so that the convection heat dissipation component 62 and the refrigerant pipe 611 are connected to the same side of the heat-generating component 100 for heat exchange.

[0085] Specifically, the surfaces of the convection heat dissipation component 62 and the refrigerant pipe 611 that are used for heat exchange connection with the heat-generating component 100 are arranged coplanarly.

[0086] In this embodiment, the above-mentioned arrangement can effectively save space compared to the method of relatively spaced convection heat dissipation component 62 and refrigerant pipe 611; on the other hand, the heat dissipation component 100 does not need to be flipped during installation, which facilitates installation and effectively improves installation efficiency.

[0087] Furthermore, in this embodiment, the heating component 100 includes a circuit board 101 and an electronic component 102 fixed on the circuit board 101. The convection heat dissipation component 62 and the refrigerant pipe 611 are both configured to be heat-exchange connected to the electronic component 102. Since the side containing the electronic component 102 generates a large amount of heat, this configuration helps to improve the heat dissipation efficiency of the heating component 100.

[0088] Furthermore, in this embodiment, referring to Figure 3 and Figure 4 The heating component 100 includes a circuit board 101 and an electronic component 102 fixed on the circuit board 101; the cooling module 6 further includes a third heat-conducting plate 63 and a fourth heat-conducting plate 64. The third heat-conducting plate 63 has a first side and a second side arranged opposite to each other. The refrigerant pipe 611 and the convection heat dissipation component 62 are both abutted against the first side and are spaced apart. The second side is arranged to abut against the electronic component 102. The fourth heat-conducting plate 64 abuts against the side of the refrigerant pipe 611 that is away from the third heat-conducting plate 63.

[0089] In this embodiment, with the above-described arrangement, since the heat generated on the side where the electronic component 102 is located is relatively large, both the refrigerant pipe 611 and the convection heat dissipation assembly 62 are connected to the electronic component 102 for heat exchange through the third heat-conducting plate 63, which is beneficial to improving the heat dissipation efficiency of the heat-generating assembly 100. The arrangement of the third heat-conducting plate 63 helps to improve the uniformity of heat dissipation from the convection heat dissipation assembly 62 and the refrigerant pipe 611 to the electronic component 102 at different locations, thereby improving heat dissipation efficiency. Furthermore, the refrigerant pipe 611 is sandwiched between the two heat-conducting plates, which facilitates the installation and fixation of the refrigerant pipe 611 when it is connected to the heat-generating assembly 100 for heat exchange, thus preventing vibration of the refrigerant pipe 611 during the operation of the heat pump system from affecting structural stability and heat dissipation effect.

[0090] Furthermore, in one embodiment of the present invention, referring to Figure 1 ,as well as Figures 5 to 9 The first refrigerant regulating component 7 includes:

[0091] The first one-way flow component 71 is disposed in the pipeline between the electronic expansion valve 5 and the first end of the refrigerant pipe 611, and the first one-way flow component 71 is configured to unidirectionally flow from the first end of the refrigerant pipe 611 to the electronic expansion valve 5.

[0092] The second unidirectional flow guide component 72 is connected to the first end of the pipeline between the first unidirectional flow guide component 71 and the electronic expansion valve 5. The second end of the second unidirectional flow guide component 72 and the second end of the refrigerant pipe 611 are both connected to the outdoor heat exchanger 4. The second unidirectional flow guide component 72 is configured to conduct unidirectionally from the first end of the second unidirectional flow guide component 72 to the second end of the second unidirectional flow guide component 72.

[0093] Both the first unidirectional flow guiding assembly 71 and the second unidirectional flow guiding assembly 72 are refrigerant regulating devices that provide unidirectional flow for the refrigerant. Each of the first unidirectional flow guiding assembly 71 and the second unidirectional flow guiding assembly 72 may include one or more one-way valves. When a unidirectional flow guiding assembly includes more than one one-way valve, the different one-way valves can be located in different branches. Specifically, when the first unidirectional flow guiding assembly 71 includes more than one one-way valves located in different branches, one end of each of the more than one one-way valves is connected to the first end of the refrigerant pipe 611, and the other end of each of the more than one one-way valves can be connected to different ends of the electronic expansion valve 5. When the second unidirectional flow guiding assembly 72 includes more than one one-way valves located in different branches, one end of each of the more than one one-way valves can be connected to the pipe between the electronic expansion valve 5 and the refrigerant pipe 611, and the other end of each of the more than one one-way valves can be connected to different locations on the outdoor heat exchanger 4.

[0094] The second unidirectional flow guide component 72 can be adapted to different internal structures of the outdoor heat exchanger 4 and connected to the first or second end of the outdoor heat exchanger 4.

[0095] The number of heat exchange sections in the outdoor heat exchanger 4 can be one or more. When the number of heat exchange sections in the outdoor heat exchanger 4 is more than one, the more than one heat exchanger can be connected in series or in parallel.

[0096] In this embodiment, with the cooperation of the aforementioned one-way refrigerant regulating device, the valve position change of the reversing valve 2 can be adapted to different refrigerant guiding effects on the flowing refrigerant. The following is a detailed description in conjunction with the attached... Figure 1 The guiding role of the unidirectional refrigerant regulating device in one structural form of the medium-temperature heat pump system is explained in detail:

[0097] Reference Figure 1The solid arrows in the diagram indicate the refrigerant flow direction, and the arrows inside the one-way refrigerant regulating device indicate the conduction direction. In heating mode or the first defrosting mode, when the reversing valve 2 is in the first valve position, the refrigerant discharged from the compressor 1 flows into the indoor heat exchanger 3 for heat exchange. After heat exchange, the refrigerant flows into the electronic expansion valve 5 for throttling and pressure reduction. The refrigerant after throttling and pressure reduction is prohibited from flowing into the first end of the refrigerant pipe 611 under the one-way cut-off of the first one-way flow guide component 71, but flows into the outdoor heat exchanger 4 for heat exchange under the one-way conduction of the second one-way flow guide component 72. The refrigerant after heat exchange in the outdoor heat exchanger 4 can flow back to the compressor 1 under the guidance of the reversing valve 2. During this process, the cooling module 6 uses convection heat dissipation to dissipate heat from the heating component 100.

[0098] Reference Figure 2 The dashed arrows indicate the refrigerant flow direction, and the arrows inside the one-way refrigerant regulating device indicate the conduction direction. In cooling mode or the second defrosting mode, when the reversing valve 2 is in the second valve position, the refrigerant discharged from the compressor 1 flows into the outdoor heat exchanger 4 for heat exchange. After heat exchange, the refrigerant is prohibited from flowing into the branch where the second one-way flow guide component 72 is located under the one-way cut-off action of the second one-way flow guide component 72. Instead, it flows through the refrigerant pipe 611 under the one-way conduction action of the first one-way flow guide component 71. The refrigerant exchanges heat with the heating component 100 in the refrigerant pipe 611 to dissipate heat from the heating component 100. Then, it enters the electronic expansion valve 5 for throttling and pressure reduction. The refrigerant flowing out of the electronic expansion valve 5 is prohibited from flowing into the branch where the second one-way flow guide component 72 is located under the pressure difference. Instead, it flows into the indoor heat exchanger 3 for heat exchange. After heat exchange in the indoor heat exchanger 3, the refrigerant returns to the compressor 1 under the guidance of the reversing valve 2. During this process, the cooling module 6 combines convection heat dissipation and refrigerant heat dissipation to dissipate heat from the heating component 100.

[0099] In this embodiment, the cooperation of the first unidirectional flow guide component 71 and the second unidirectional flow guide component 72 ensures that the refrigerant flowing between the indoor and outdoor environments during both cooling and heating cycles can be throttled and depressurized by the electronic expansion valve 5 according to actual needs. Furthermore, the low-temperature refrigerant after throttling and depressurization by the electronic expansion valve 5 will not flow into the cooling module 6, effectively preventing condensation in the cooling module 6 while ensuring efficient operation of the heat pump system in both cooling and heating modes. It also ensures heat dissipation for the heating element 100 under any operating condition. During the heating cycle, the opening of the electronic expansion valve 5 can be increased to achieve defrosting without shutting down the system, effectively reducing operating noise and indoor temperature fluctuations, thereby improving user comfort during heat pump system application. In addition, the cooperation of more than one unidirectional flow guide component to adjust the refrigerant flow direction eliminates the need for electronic control adjustment of the valve body during refrigerant flow switching, further reducing operating noise and improving flow direction adjustment efficiency of the heat pump system.

[0100] In other embodiments, a multi-way valve can be used instead of the more than one unidirectional flow guiding component described above. For example, the first refrigerant regulating component 7 may include a three-way valve, with the first end of the refrigerant pipe 611, the outdoor heat exchanger 4, and the electronic expansion valve 5 respectively connected to different interfaces of the three-way valve, and the second end of the refrigerant pipe 611 connected to the outdoor heat exchanger 4. When the reversing valve 2 operates in the first valve position, the three-way valve operates in the third valve position to connect the electronic expansion valve 5 to the outdoor heat exchanger 4 and block the electronic expansion valve 5 from one end of the refrigerant pipe 611; when the reversing valve 2 operates in the second valve position, the three-way valve operates in the fourth valve position to block the electronic expansion valve 5 from the outdoor heat exchanger 4 and connect the electronic expansion valve 5 to the refrigerant pipe 611. Alternatively, the first unidirectional flow guiding component 71 and / or the second unidirectional flow guiding component 72 may be replaced by on / off valves.

[0101] Furthermore, in one embodiment of the present invention, referring to Figure 5 The first height of the indoor heat exchanger 3 is greater than the second height of the outdoor heat exchanger 4. The second end of the second unidirectional flow guide assembly 72 is connected to the second end of the refrigerant pipe 611 to form a first position 01. The first position 01 is connected to the outdoor heat exchanger 4.

[0102] The first refrigerant regulating component 7 further includes a third one-way flow guiding component 73, which is disposed in the pipeline between the refrigerant pipe 611 and the first position 01. The first one-way valve is configured to allow one-way flow from the first position 01 to the refrigerant pipe 611.

[0103] The third unidirectional flow guiding assembly 73 is a refrigerant regulating device that has a unidirectional flow guiding function for the refrigerant flowing through it. The third unidirectional flow guiding assembly 73 may include one or more one-way valves. Wherein, when the third unidirectional flow guiding assembly 73 includes more than one one-way valve, different one-way valves may be located in different branches.

[0104] In this embodiment, since the indoor heat exchanger 3 is positioned higher than the outdoor heat exchanger 4, the refrigerant flowing out of the indoor heat exchanger 3 is throttled and depressurized by the electronic expansion valve 5 before entering the branch where the second one-way flow guide assembly 72 is located. Under the influence of gravity, it easily flows into the refrigerant pipe 611 through the second end of the pipe. However, in this embodiment, when the reversing valve 2 is in the first valve position, meaning the refrigerant flowing out of the indoor heat exchanger 3 needs to pass through the electronic expansion valve 5 before entering the outdoor heat exchanger 4 for heat exchange, the pressure at the end of the first one-way flow guide assembly 71 connected to the electronic expansion valve 5 is greater than the pressure at the end of the first one-way flow guide assembly 71 connected to the first end of the refrigerant pipe 611. Under this pressure difference, the refrigerant already present in the refrigerant pipe 611 is prohibited from flowing out of its branch through the first one-way flow guide assembly 71. Furthermore, under the one-way shut-off action of the third one-way flow guide assembly 73, the refrigerant in the refrigerant pipe 611 is prohibited from flowing out of its branch through the third one-way flow guide assembly 73. Based on this, the cooperation of the first unidirectional flow guide component 71 and the third unidirectional flow guide component 73 can achieve a local high-pressure state inside the refrigerant pipe 611. The refrigerant pressure at the location of the refrigerant pipe 611 is higher than the refrigerant pressure at the location of the first position 01. Therefore, the refrigerant flowing out of the electronic expansion valve 5 is prohibited from flowing into the branch of the refrigerant pipe 611 under the action of the pressure difference when it flows through the first position 01. Based on this, the low-temperature refrigerant flowing out of the electronic expansion valve 5 can be further prevented from entering the refrigerant pipe 611, thereby improving the effectiveness of preventing condensation in the cooling module 6.

[0105] In other embodiments, the second end of the second one-way valve and the second end of the refrigerant pipe 611 can be connected to different heat exchange sections of the outdoor heat exchanger 4, in which case the third one-way flow guide assembly 73 can be omitted.

[0106] Furthermore, in one embodiment of the present invention, referring to Figure 6 and Figure 7 The outdoor heat exchanger 4 includes a first heat exchange section 41 and a second heat exchange section 42. The first end of the first heat exchange section 41 is connected to the first end of the second heat exchange section 42 to form a second position 02. The second end of the second unidirectional flow guide assembly 72 is connected to the second position 02.

[0107] The heat pump system further includes a second refrigerant regulating component 8. The second end of the refrigerant pipe 611 is connected to the second end of the second heat exchange section 42. The second end of the first heat exchange section 41 is connected to the reversing valve 2. The pipeline between the refrigerant pipe 611 and the second heat exchange section 42, as well as the pipeline between the first heat exchange section 41 and the reversing valve 2, are all connected to the second refrigerant regulating component 8.

[0108] The second refrigerant regulating component 8 is configured to cooperate with the first refrigerant regulating component 7 to switch the refrigerant flow direction in the outdoor heat exchanger 4 between a first flow direction and a second flow direction. The first flow direction is that the refrigerant flows through the first heat exchange section 41 and the second heat exchange section 42 in sequence, and the second flow direction is that the refrigerant flows through the first heat exchange section 41 and the second heat exchange section 42 respectively.

[0109] The refrigerant flows sequentially through the first heat exchange section 41 and the second heat exchange section 42. Specifically, the refrigerant entering the outdoor heat exchanger 4 first flows entirely through the first heat exchange section 41 for heat exchange, and then flows entirely through the second heat exchange section 42 for heat exchange. The second heat exchange section 42 can be understood as a subcooling section to increase the subcooling degree of the refrigerant flowing out of the outdoor heat exchanger 4.

[0110] The refrigerant flows through the first heat exchange section 41 and the second heat exchange section 42 respectively. This means that part of the refrigerant entering the outdoor heat exchanger 4 flows through the first heat exchange section 41 for heat exchange and then flows out of the outdoor heat exchanger 4, while the other part of the refrigerant flows through the second heat exchange section 42 for heat exchange and then flows out of the outdoor heat exchanger 4.

[0111] In this embodiment, the first heat exchange section 41 and the second heat exchange section 42 are arranged vertically, with the first heat exchange section 41 positioned above the second heat exchange section 42. In other embodiments, the first heat exchange section 41 and the second heat exchange section 42 may also be arranged horizontally.

[0112] The second refrigerant regulating component 8 may include a combination of one or more refrigerant devices such as a one-way valve or a multi-way valve. Any refrigerant regulating device that can switch between the first flow direction and the second flow direction alone or in conjunction with the flow direction switching component can be used as the second refrigerant regulating component 8.

[0113] The specific flow direction in the outdoor heat exchanger 4 is set to meet the operational requirements of the heat pump system. In this embodiment, when the reversing valve 2 operates in different valve positions, the first refrigerant regulating component 7 and the second refrigerant regulating component 8 switch the refrigerant flow direction inside the outdoor heat exchanger 4. When the reversing valve 2 operates in the first valve position, the first refrigerant regulating component 7 and the second refrigerant regulating component 8 cooperate to achieve a second refrigerant flow direction in the outdoor heat exchanger 4. When the reversing valve 2 operates in the second valve position, the first flow direction regulating component and the second flow direction regulating component cooperate to achieve a first refrigerant flow direction in the outdoor heat exchanger 4.

[0114] In this embodiment, based on the outdoor heat exchanger 4 being provided with a first heat exchange section 41 and a second heat exchange section 42, the refrigerant flow direction in the outdoor heat exchanger 4 can be switched according to the current operating state of the heat pump system through the cooperation of the first refrigerant regulating component 7 and the second refrigerant regulating component 8. When subcooling is required, the first flow direction is used, and when subcooling is not required, the second flow direction is used. This helps to avoid unnecessary subcooling of the refrigerant, thereby effectively improving the energy efficiency of the heat pump system in different operating modes and meeting the operating requirements of different modes.

[0115] Furthermore, in this embodiment, referring to Figure 6 and Figure 7 The second refrigerant regulating component 8 includes a first one-way valve. The pipeline between the second heat exchange section 42 and the refrigerant pipe 611 is connected to the first end of the first one-way valve. The pipeline between the first heat exchange section 41 and the reversing valve 2 is connected to the second end of the first one-way valve. The first one-way valve is configured to allow unidirectional flow from the first end of the first one-way valve to the second end of the first one-way valve.

[0116] Reference Figure 6 , Figure 6 The arrows indicate the refrigerant flow direction. In heating mode or first defrosting mode, reversing valve 2 operates in the first valve position, and the refrigerant flow direction in outdoor heat exchanger 4 is the second flow direction. The refrigerant discharged from compressor 1 flows sequentially through indoor heat exchanger 3, electronic expansion valve 5, and second one-way flow guide assembly 72 before flowing to second position 02. A portion of the refrigerant flowing to second position 02 flows into first heat exchange section 41 for heat exchange. After heat exchange, the refrigerant flows out from the second end of first heat exchange section 41 and is prohibited from flowing into the branch where first one-way valve is located under the one-way shut-off action of first one-way valve. Instead, it flows back to compressor 1 through reversing valve 2. The other portion of the refrigerant flowing to second position 02 flows into second heat exchange section 42 for heat exchange. After heat exchange, the refrigerant flows out from the second end of second heat exchange section 42 and is prohibited from flowing back to refrigerant pipe 611 under the action of pressure difference. Instead, it flows into reversing valve 2 through its branch under the one-way conduction action of first one-way valve and then flows back to compressor 1. During this process, the first heat exchange section 41 and the second heat exchange section 42 exchange heat independently, which can reduce the loss of heating capacity caused by unnecessary pressure drop. In the heating mode, it is beneficial to improve the heating effect of the system. In the first defrosting mode, it is beneficial to defrost different positions of the outdoor heat exchanger 4 with relatively uniform heat, avoid incomplete defrosting, and improve the defrosting effect.

[0117] Reference Figure 7 , Figure 7The arrows indicate the refrigerant flow direction. In cooling mode or second defrosting mode, the reversing valve 2 operates in the second valve position, and the refrigerant flow direction in the outdoor heat exchanger 4 is the first flow direction. The refrigerant discharged from the compressor 1 is prevented from flowing through its branch into the second heat exchange section 42 by the guiding action of the reversing valve 2 and the one-way shut-off action of the first one-way valve. Instead, it all flows into the first heat exchange section 41 for heat exchange. After heat exchange in the first heat exchange section 41, the refrigerant flowing out from the first end is prevented from flowing into its branch by the one-way shut-off action of the second one-way flow guide assembly 72. Instead, it passes through the second position 02 and flows from the second heat exchange section 42. The refrigerant flows into the second heat exchange section 42 for further heat exchange and subcooling. The refrigerant flowing out of the second end of the second heat exchange section 42 is prohibited from flowing into the branch where the first one-way valve is located due to pressure differential. Instead, it flows entirely through the branch where the second one-way valve is located and enters the refrigerant pipe 611. After flowing out of the module from the refrigerant pipe 611, it passes through the first one-way flow guide assembly 71 and is prohibited from flowing into the branch where the second one-way flow guide assembly 72 is located due to pressure differential. Instead, it flows entirely into the electronic expansion valve 5 for throttling and pressure reduction before entering the indoor heat exchanger 3 for evaporation. The refrigerant evaporated in the indoor heat exchanger 3 is guided back to the compressor 1 by the reversing valve 2. During this process, the refrigerant flows sequentially through the first heat exchange section 41 and the second heat exchange section 42 for heat exchange. The refrigerant can be subcooled in the second heat exchange section 42 to improve the system subcooling degree and increase the system energy efficiency in cooling mode or the second defrosting mode.

[0118] In this embodiment, the flow direction switching within the outdoor heat exchanger 4 is achieved by cooperating with the first one-way valve and more than one one-way flow guide component. This is beneficial for effectively balancing the improvement of heating effect, defrosting effect and cooling energy efficiency. Moreover, the structure is simple and the adjustment process does not require electronic control, which helps to improve the flow direction adjustment efficiency and reduce operating noise.

[0119] In other embodiments, the first check valve can be replaced by an on / off valve, which achieves the same shut-off and conduction function as the check valve by opening and closing the on / off valve to regulate the refrigerant.

[0120] Furthermore, in this embodiment, the first refrigerant regulating component 7 also includes a second one-way valve, which is located in the pipeline between the refrigerant pipe 611 and the second heat exchange section 42. The second one-way valve is configured to allow one-way flow from the second heat exchange section 42 to the refrigerant pipe 611.

[0121] In this embodiment, by setting the second one-way valve, the flow of refrigerant in the refrigerant pipe 611 to the second heat exchange section 42 can be restricted. The first one-way flow guide component 71 and the second one-way valve can cooperate to keep the refrigerant pressure in the refrigerant pipe 611 under high pressure, which can effectively prevent the refrigerant in the refrigerant pipe 611 from flowing out, and ensure that the low-temperature refrigerant flowing out after evaporation in the second heat exchange section 42 will not enter the refrigerant pipe 611, which can effectively prevent condensation in the cooling module 6.

[0122] Furthermore, in this embodiment, referring to Figure 6 and Figure 7 The first heat exchange section 41 includes more than one parallel refrigerant flow path, and the number of refrigerant flow paths in the first heat exchange section 41 is greater than or equal to the number of refrigerant flow paths in the second heat exchange section 42.

[0123] Specifically, the refrigerant flow paths in the first heat exchange section 41 and the second heat exchange section 42 can both be straight pipes.

[0124] The first heat exchange section 41 has at least two refrigerant flow paths, and the second heat exchange section 42 has at least one refrigerant flow path.

[0125] The number of refrigerant flow paths in the first heat exchange section 41 is greater than that in the second heat exchange section 42 to improve the subcooling effect. For example, as Figure 6 and Figure 7 As shown by the solid lines in the outdoor heat exchanger 4, the first heat exchange section 41 has 2 refrigerant flow paths, and the second heat exchange section 42 has 1 refrigerant flow path; for example, as... Figure 6 and Figure 7 As shown by the combination of dashed and solid lines in the outdoor heat exchanger 4, the number of refrigerant flow paths in the first heat exchange section 41 is 3, and the number of refrigerant flow paths in the second heat exchange section 42 is 2.

[0126] In this embodiment, the refrigerant flow rate in the first heat exchange section 41 and the second heat exchange section 42 is set in the manner described above, which is beneficial to improving the heat exchange effect of the outdoor heat exchanger 4. At the same time, it improves the subcooling effect of the outdoor heat exchanger 44 on the refrigerant when subcooling is required, thereby further improving the energy efficiency of the heat pump system.

[0127] Furthermore, in one embodiment of the present invention, referring to Figure 8 and Figure 9 The outdoor heat exchanger 4 further includes a third heat exchange section 43, a fourth heat exchange section 44 and a fifth heat exchange section 45, and the heat pump system further includes a third refrigerant regulating component 9;

[0128] The first end of the third heat exchange section 43 is connected to the first end of the fourth heat exchange section 44 to form a third position 03. The third position 03 and the first end of the fifth heat exchange section 45 are both connected to the second end of the second unidirectional flow guide assembly 72. The second end of the refrigerant pipe 611 is connected to the first end of the fifth heat exchange section 45.

[0129] The second end of the third heat exchange section 43 is connected to the reversing valve 2, and the second end of the fourth heat exchange section 44 is connected to the second end of the fifth heat exchange section 45 to form the fourth position 04. The pipeline between the third heat exchange section 43 and the reversing valve 2 and the fourth position 04 are both connected to the third refrigerant regulating component 9.

[0130] The third refrigerant regulating component 9 is configured to cooperate with the first refrigerant regulating component 7 to switch the refrigerant flow direction in the outdoor heat exchanger 4 between the third flow direction and the fourth flow direction. The third flow direction is that the refrigerant flows through the third heat exchange section 43, the fourth heat exchange section 44 and the fifth heat exchange section 45 respectively. The fourth flow direction is that the refrigerant flows through the third heat exchange section 43, the fourth heat exchange section 44 and the fifth heat exchange section 45 in sequence.

[0131] The refrigerant flowing sequentially through the third heat exchange section 43, the fourth heat exchange section 44, and the fifth heat exchange section 45 specifically means that the refrigerant entering the outdoor heat exchanger 4 first flows entirely through the third heat exchange section 43 for heat exchange, then entirely through the fourth heat exchange section 44 for heat exchange, and finally, all the refrigerant flowing out of the fourth heat exchange section 44 flows entirely through the fifth heat exchange section 45 for heat exchange. The fourth heat exchange section 44 and the fifth heat exchange section 45 can be understood as subcooling sections to increase the subcooling degree of the refrigerant flowing out of the outdoor heat exchanger 4.

[0132] The refrigerant flows through the third heat exchange section 43, the fourth heat exchange section 44, and the fifth heat exchange section 45 respectively. This means that a portion of the refrigerant entering the outdoor heat exchanger 4 flows through the third heat exchange section 43 for heat exchange and then flows out of the outdoor heat exchanger 4, another portion of the refrigerant flows through the fourth heat exchange section 44 for heat exchange and then flows out of the outdoor heat exchanger 4, and yet another portion of the refrigerant flows through the fifth heat exchange section 45 for heat exchange and then flows out of the outdoor heat exchanger 4.

[0133] In this embodiment, the third heat exchange section 43, the fourth heat exchange section 44, and the fifth heat exchange section 45 are arranged vertically, and are arranged sequentially from top to bottom. In other embodiments, the third heat exchange section 43, the fourth heat exchange section 44, and the fifth heat exchange section 45 may also be arranged horizontally.

[0134] The third refrigerant regulating component 9 may include a combination of one or more refrigerant devices such as a one-way valve or a multi-way valve. Any refrigerant regulating device that can switch between the third flow direction and the fourth flow direction alone or in conjunction with the flow direction switching component can be used as the third refrigerant regulating component 9.

[0135] The specific flow direction in the outdoor heat exchanger 4 is set to meet the operational requirements of the heat pump system. In this embodiment, when the reversing valve 2 operates in different valve positions, the first refrigerant regulating component 7 and the third refrigerant regulating component 9 switch the refrigerant flow direction inside the outdoor heat exchanger 4. When the reversing valve 2 operates in the first valve position, the first refrigerant regulating component 7 and the third refrigerant regulating component 9 cooperate to achieve a third refrigerant flow direction in the outdoor heat exchanger 4. When the reversing valve 2 operates in the second valve position, they cooperate to achieve a fourth refrigerant flow direction in the outdoor heat exchanger 4.

[0136] In this embodiment, the refrigerant flow direction in the outdoor heat exchanger 4 can be switched according to the current operating state of the heat pump system through the cooperation of the first refrigerant regulating component 7 and the third refrigerant regulating component 9. When subcooling is required, the fourth flow direction is used, and when subcooling is not required, the third flow direction is used. This helps to avoid unnecessary subcooling of the refrigerant, so as to effectively improve the energy efficiency of the heat pump system in different operating modes and meet the operating requirements of different modes.

[0137] Furthermore, in this embodiment, referring to Figure 8 and Figure 9 The third refrigerant regulating component 9 includes a third one-way valve. The fourth position 04 is connected to the first end of the third one-way valve. The pipeline between the third heat exchange section 43 and the reversing valve 2 is connected to the second end of the third one-way valve. The third one-way valve is configured to allow unidirectional flow from the first end of the third one-way valve to the second end of the third one-way valve.

[0138] Reference Figure 8 , Figure 8 The arrows indicate the refrigerant flow direction. In heating mode or first defrosting mode, reversing valve 2 operates in the first valve position, and the flow direction in outdoor heat exchanger 4 is the third flow direction. The refrigerant discharged from compressor 1 flows sequentially through indoor heat exchanger 3, electronic expansion valve 5, and second one-way flow guide assembly 72. A portion of the refrigerant flowing out of the second one-way flow guide assembly 72 flows into third position 03. A portion of the refrigerant flowing into third position 03 flows into third heat exchange section 43 for heat exchange, and another portion of the refrigerant flowing into third position 03 flows into fourth heat exchange section 44 for heat exchange. Another portion of the refrigerant flowing out of the two unidirectional flow guide components 72 flows into the fifth heat exchange section 45 for heat exchange; the refrigerant flowing out of the third heat exchange section 43 is prevented from flowing into its branch under the unidirectional shut-off action of the third one-way valve, and all flows back to the compressor 1 through the reversing valve 2. The refrigerant flowing out of the fourth heat exchange section 44 and the refrigerant flowing out of the fifth heat exchange section 45 flows into the fourth position 04. The refrigerant at the fourth position 04 flows through the third one-way valve under the unidirectional conduction action of the third one-way valve and merges with the refrigerant flowing out of the third heat exchange section 43 before flowing back to the compressor 1 through the reversing valve 2. In this process, the third heat exchange section 43, the fourth heat exchange section 44, and the fifth heat exchange section 45 exchange heat independently, which can reduce the loss of heating capacity caused by pressure drop. In heating mode, this is beneficial to improving the heating effect of the system. In the first defrosting mode, it is beneficial to defrost different positions of the outdoor heat exchanger 4 with relatively uniform heat, avoid incomplete defrosting, and improve the defrosting effect.

[0139] Reference Figure 9 , Figure 9The arrows indicate the refrigerant flow direction. In cooling mode or the second defrost mode, the reversing valve 2 operates in the second valve position, and the flow direction in the outdoor heat exchanger 4 is the fourth direction. The refrigerant discharged from the compressor 1 is prevented from flowing through the third one-way valve into the fifth heat exchange section 45 by the one-way shut-off action of the reversing valve 2. Instead, all the refrigerant flows into the third heat exchange section 43 for heat exchange. After heat exchange in the third heat exchange section 43, the refrigerant flowing out is prevented from flowing into its destination by the one-way shut-off action of the second one-way flow guide assembly 72. Instead of flowing through the branch, the refrigerant flows through the third position 03 into the fourth heat exchange section 44 for heat exchange. Under the pressure difference, the refrigerant flowing out of the fourth heat exchange section 44 is prohibited from flowing into the branch where the third one-way valve is located. Instead, it flows entirely through the fourth position 04 into the fifth heat exchange section 45 for heat exchange. After the fifth heat exchange section 45, the refrigerant, under the one-way cut-off action of the second one-way flow guide component 72, is prohibited from flowing into its own branch. Instead, it flows into the refrigerant pipe 611 to dissipate heat from the heating element 100, and then returns to the compressor 1 after passing through the reversing valve 2. During this process, the refrigerant flows sequentially through the third heat exchange section 43, the fourth heat exchange section 44, and the fifth heat exchange section 45 for heat exchange. After heat exchange in the third heat exchange section 43, the refrigerant can undergo secondary subcooling in the fourth and fifth heat exchange sections 44 and 45, which helps to extend the subcooling section, increase the system subcooling degree, and thus improve the system energy efficiency in cooling mode or the second defrosting mode.

[0140] In other embodiments, the third refrigerant regulating component 9 may also use an on / off valve instead of the aforementioned third check valve, and the same shut-off and conduction functions as the third check valve are achieved by opening and closing the on / off valve to regulate the refrigerant.

[0141] Furthermore, in this embodiment, referring to Figure 8 and Figure 9 The first pipeline 05 is defined as the pipeline between the first one-way flow guide assembly 71 and the electronic expansion valve 5. The second one-way flow guide assembly 72 further includes a fourth one-way valve 721 and a fifth one-way valve 722. The first end of the fourth one-way valve 721 and the first end of the fifth one-way valve 722 are both connected to the first pipeline 05. The second end of the fourth one-way valve 721 is connected to the third position 03. The second end of the fifth one-way valve 722 is connected to the first end of the fifth heat exchange section 45. The pipeline between the fifth one-way valve 722 and the fifth heat exchange section 45 is connected to the second end of the refrigerant pipe 611. The fourth one-way valve 721 is configured to unidirectionally flow from the first pipeline 05 to the third position 03, and the fifth one-way valve 722 is configured to unidirectionally flow from the first pipeline 05 to the fifth heat exchange section 45.

[0142] The pipeline between the fourth one-way valve 721 and the fifth heat exchange section 45 is connected to the second end of the refrigerant pipe 611.

[0143] Combination Figure 8In heating mode or first defrosting mode, the reversing valve 2 operates in the first valve position. A portion of the refrigerant flowing out of the electronic expansion valve 5 flows to the third position 03 under the unidirectional conduction of the fourth one-way valve 721. A portion of the refrigerant flowing into the third position 03 flows into the third heat exchange section 43 for heat exchange and then flows out of the outdoor heat exchanger 4. Another portion of the refrigerant flowing into the third position 03 flows into the fourth heat exchange section 44 for heat exchange and then flows out of the outdoor heat exchanger 4. Another portion of the refrigerant flowing out of the electronic expansion valve 5 flows into the fifth heat exchange section 45 for heat exchange and then flows out of the outdoor heat exchanger 4 under the unidirectional conduction of the fifth one-way valve 722.

[0144] Combination Figure 9 In cooling mode or second defrosting mode, reversing valve 2 operates in the second valve position. The refrigerant discharged from compressor 1 first flows into the third heat exchange section 43 of outdoor heat exchanger 4 for heat exchange. After heat exchange in the third heat exchange section 43, the refrigerant flows through the third position 03 and is completely cut off by the third one-way valve, flowing into the fourth heat exchange section 44 for heat exchange. After heat exchange in the fourth heat exchange section 44, the refrigerant flows through the fourth position 04 and enters the fifth heat exchange section 45 for heat exchange. The refrigerant flowing out of the fifth heat exchange section 45 is completely cut off by the second one-way flow guide assembly 72 and flows into the refrigerant pipe 611 to dissipate heat from the heating element 100. After passing through the electronic expansion valve 5 and indoor heat exchanger 3, it flows back to compressor 1.

[0145] In this embodiment, through the above-mentioned settings, under the one-way shut-off action of the fourth one-way valve 721, it can be ensured that the refrigerant flowing from the third heat exchange section 43 through the third position 03 into the fourth heat exchange section 44 in the outdoor heat exchanger 4 will not leak from the third position 03 into the external pipeline of the outdoor heat exchanger 4. Under the one-way shut-off action of the fifth one-way valve 722, the refrigerant flowing out of the fifth heat exchange section 45 can all flow into the refrigerant pipe 611, avoiding unnecessary diversion, thereby effectively improving the heat exchange effect of the outdoor heat exchanger 4 while avoiding condensation on the cooling module 6.

[0146] In other embodiments, the second one-way flow guide assembly 72 may also include a seventh one-way valve, one end of which is connected to the first pipeline 05, and the third position 03 and the fifth heat exchange section 45 are both connected to the other end of the seventh one-way valve.

[0147] Furthermore, in this embodiment, the second pipeline 06 is defined as the pipeline between the refrigerant pipeline 611 and the fifth heat exchange section 45. The first refrigerant regulating component 7 also includes a sixth one-way valve 75, which is disposed in the second pipeline 06 and is configured to allow one-way flow from the fifth heat exchange section 45 to the refrigerant pipeline 611.

[0148] In this embodiment, the refrigerant flow in the refrigerant pipe 611 to the fifth heat exchange section 45 can be restricted by the setting of the sixth one-way valve 75. The first one-way flow guide component 71 and the second one-way valve can cooperate to keep the refrigerant pressure in the refrigerant pipe 611 under high pressure, which can effectively prevent the refrigerant in the refrigerant pipe 611 from flowing out, and ensure that the low-temperature refrigerant after the electronic expansion valve 5 throttles and reduces the pressure will not enter the refrigerant pipe 611, which can effectively prevent condensation in the cooling module 6.

[0149] Furthermore, in this embodiment, the third heat exchange unit 43 includes more than one parallel refrigerant flow path, the number of refrigerant flow paths in the third heat exchange unit 43 is greater than or equal to the number of refrigerant flow paths in the fourth heat exchange unit 44, and the number of refrigerant flow paths in the fourth heat exchange unit 44 is greater than or equal to the number of refrigerant flow paths in the fifth heat exchange unit 45.

[0150] Specifically, the refrigerant flow paths in the third heat exchange section 43, the fourth heat exchange section 44, and the fifth heat exchange section 45 can all be straight pipes.

[0151] The third heat exchange section 43 has at least two refrigerant flow paths, the fourth heat exchange section 44 has at least one refrigerant flow path, and the fifth heat exchange section 45 has at least one refrigerant flow path.

[0152] The number of refrigerant flow paths in the fourth heat exchange section 44 and the fifth heat exchange section 45 is less than the number of refrigerant flow paths in the third heat exchange section 43, in order to improve the subcooling effect. For example, as Figure 8 and Figure 9 As shown by the solid lines in the outdoor heat exchanger 4, the third heat exchange section 43 has 3 refrigerant flow paths, the fourth heat exchange section 44 has 1 refrigerant flow path, and the fifth heat exchange section 45 has 1 refrigerant flow path; for example, as... Figure 8 and Figure 9 As shown by the combination of dashed and solid lines in the outdoor heat exchanger 44, the number of refrigerant flow paths in the third heat exchange section 43 is 4, the number of refrigerant flow paths in the fourth heat exchange section 44 is 2, and the number of refrigerant flow paths in the fifth heat exchange section 45 is 2.

[0153] In this embodiment, setting the refrigerant flow rate in the third heat exchange section 43 and the fourth heat exchange section 44 in the manner described above is beneficial to improving the heat exchange effect of the outdoor heat exchanger 4. At the same time, it improves the subcooling effect of the outdoor heat exchanger 4 on the refrigerant when subcooling is required, thereby further improving the energy efficiency of the heat pump system.

[0154] This invention also proposes an air conditioner that includes the heat pump system described above. The specific structure of the heat pump system is as described in the above embodiments. Since the air conditioner in this embodiment adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0155] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A heat pump system, characterized by, The cooling module comprises a convection heat dissipation assembly and a refrigerant heat dissipation assembly, the convection heat dissipation assembly and the refrigerant heat dissipation assembly are both used for heat exchange connection with the heat generating assembly, the refrigerant heat dissipation assembly comprises a refrigerant pipe, and the indoor heat exchanger, the electronic expansion valve, the refrigerant pipe and the outdoor heat exchanger are sequentially connected. The refrigerant pipe, the electronic expansion valve and the outdoor heat exchanger are connected with the first refrigerant regulating assembly, the first refrigerant regulating assembly is arranged to switch the refrigerant state between a first state and a second state when the reversing valve operates at different valve positions, the first state comprises that when the refrigerant flows from the indoor heat exchanger to the outdoor heat exchanger, the refrigerant flowing out of the electronic expansion valve is limited to flow into the refrigerant pipe, and the second state comprises that when the refrigerant flows from the outdoor heat exchanger to the indoor heat exchanger, the refrigerant sequentially flows through the refrigerant pipe and the electronic expansion valve. The first refrigerant regulating assembly comprises: A first one-way flow guide assembly is arranged between the electronic expansion valve and the first end of the refrigerant pipe, and the first one-way flow guide assembly is arranged to be one-way conducted from the first end of the refrigerant pipe to the electronic expansion valve. A second one-way flow guide assembly is connected with the first end of the second one-way flow guide assembly, and the second end of the second one-way flow guide assembly is connected with the second end of the refrigerant pipe, and the second one-way flow guide assembly is arranged to be one-way conducted from the first end of the second one-way flow guide assembly to the second end of the second one-way flow guide assembly. The convection heat dissipation assembly and the refrigerant heat dissipation assembly are arranged in opposite spaces to form a containing space of the heat generating assembly.

2. The heat pump system of claim 1, wherein, The refrigerant heat dissipation assembly further comprises a first heat conduction plate and a second heat conduction plate arranged oppositely, the refrigerant pipe is clamped between the first heat conduction plate and the second heat conduction plate, and the first heat conduction plate is arranged to abut against the heat generating assembly.

3. The heat pump system of claim 2, wherein, The convection heat dissipation assembly and the refrigerant pipe are arranged side by side to make the convection heat dissipation assembly and the refrigerant pipe both heat exchange connected with the same side of the heat generating assembly.

4. The heat pump system of claim 1, wherein, The heat generating assembly comprises a circuit board and an electronic element fixed on the circuit board.

5. The heat pump system of claim 4, wherein, The cooling module further comprises a third heat conduction plate and a fourth heat conduction plate, the third heat conduction plate has a first surface and a second surface arranged oppositely, the refrigerant pipe and the convection heat dissipation assembly are both abutted on the first surface and arranged in space, the second surface is arranged to abut against the electronic element, and the fourth heat conduction plate is abutted on a surface of the refrigerant pipe away from the third heat conduction plate. The convection heat dissipation assembly comprises a fin assembly.

6. The heat pump system of claim 1, wherein, And / or, the cooling module is arranged outdoors to be heat exchange connected with the heat generating assembly arranged outdoors. ​ 7. The heat pump system of any one of claims 1 to 6, wherein, The first height at which the indoor heat exchanger is arranged is greater than a second height at which the outdoor heat exchanger is arranged, a second end of the second one-way flow guide component is connected to a second end of the refrigerant pipe to form a first position, and the first position is connected to the outdoor heat exchanger. The first refrigerant adjusting component further comprises a third one-way flow guide component arranged in a pipe between the refrigerant pipe and the first position, and the third one-way flow guide component is arranged to be one-way conductive from the first position to the refrigerant pipe.

8. The heat pump system of any one of claims 1 to 6, wherein, The outdoor heat exchanger comprises a first heat exchange part and a second heat exchange part, a first end of the first heat exchange part is connected to a first end of the second heat exchange part to form a second position, and a second end of the second one-way flow guide component is connected to the second position. The heat pump system further comprises a second refrigerant adjusting component, a second end of the refrigerant pipe is connected to a second end of the second heat exchange part, a second end of the first heat exchange part is connected to the reversing valve, and a pipe between the refrigerant pipe and the second heat exchange part and a pipe between the first heat exchange part and the reversing valve are both connected to the second refrigerant adjusting component. The second refrigerant adjusting component is arranged to cooperate with the first refrigerant adjusting component to switch the refrigerant flow direction in the outdoor heat exchanger between a first flow direction and a second flow direction, the first flow direction is that the refrigerant flows through the first heat exchange part and the second heat exchange part in sequence, and the second flow direction is that the refrigerant flows through the first heat exchange part and the second heat exchange part respectively.

9. The heat pump system of claim 8, wherein, The second refrigerant adjusting component comprises a first one-way valve, a pipe between the second heat exchange part and the refrigerant pipe is connected to a first end of the first one-way valve, and a pipe between the first heat exchange part and the reversing valve is connected to a second end of the first one-way valve, and the first one-way valve is arranged to be one-way conductive from the first end of the first one-way valve to the second end of the first one-way valve.

10. The heat pump system of claim 9, wherein, The first refrigerant adjusting component further comprises a second one-way valve arranged in a pipe between the refrigerant pipe and the second heat exchange part, and the second one-way valve is arranged to be one-way conductive from the second heat exchange part to the refrigerant pipe.

11. The heat pump system of claim 8, wherein, The first heat exchange part comprises a plurality of parallel refrigerant flow paths, and the number of the refrigerant flow paths in the first heat exchange part is greater than or equal to the number of the refrigerant flow paths in the second heat exchange part.

12. The heat pump system of any one of claims 1 to 6, wherein, The outdoor heat exchanger further comprises a third heat exchange part, a fourth heat exchange part and a fifth heat exchange part, and the heat pump system further comprises a third refrigerant adjusting component. A first end of the third heat exchange part is connected to a first end of the fourth heat exchange part to form a third position, the third position and a first end of the fifth heat exchange part are both connected to a second end of the second one-way flow guide component, and a second end of the refrigerant pipe is connected to the first end of the fifth heat exchange part. A second end of the third heat exchange part is connected to the reversing valve, a second end of the fourth heat exchange part is connected to a second end of the fifth heat exchange part to form a fourth position, and a pipe between the third heat exchange part and the reversing valve and the fourth position are both connected to the third refrigerant adjusting component. The third refrigerant regulating assembly is configured to cooperate with the first refrigerant regulating assembly to switch the refrigerant flow direction in the outdoor heat exchanger between a third flow direction and a fourth flow direction, the third flow direction being that the refrigerant flows through the third heat exchange part, the fourth heat exchange part and the fifth heat exchange part in sequence, and the fourth flow direction being that the refrigerant flows through the third heat exchange part, the fourth heat exchange part and the fifth heat exchange part in sequence.

13. The heat pump system of claim 12, wherein, The third refrigerant regulating assembly comprises a third one-way valve, the fourth position is connected with a first end of the third one-way valve, a pipeline between the third heat exchange part and the reversing valve is connected with a second end of the third one-way valve, and the third one-way valve is configured to be unidirectionally conducted from the first end of the third one-way valve to the second end of the third one-way valve.

14. The heat pump system of claim 12, wherein, The first pipeline is a pipeline between the first one-way flow regulating assembly and the electronic expansion valve, the second one-way flow regulating assembly further comprises a fourth one-way valve and a fifth one-way valve, a first end of the fourth one-way valve and a first end of the fifth one-way valve are both connected with the first pipeline, a second end of the fourth one-way valve is connected with the third position, and a second end of the fifth one-way valve is connected with a first end of the fifth heat exchange part, a pipeline between the fifth one-way valve and the fifth heat exchange part is connected with the second end of the refrigerant pipe; The fourth one-way valve is configured to be unidirectionally conducted from the first pipeline to the third position, and the fifth one-way valve is configured to be unidirectionally conducted from the first pipeline to the fifth heat exchange part.

15. The heat pump system of claim 12, wherein, The second pipeline is a pipeline between the refrigerant pipe and the fifth heat exchange part, and the first refrigerant regulating assembly further comprises a sixth one-way valve, the sixth one-way valve is arranged in the second pipeline, and the sixth one-way valve is configured to be unidirectionally conducted from the fifth heat exchange part to the refrigerant pipe.

16. The heat pump system of claim 12, wherein, The third heat exchange part comprises a plurality of parallel refrigerant flow paths, the number of the refrigerant flow paths in the third heat exchange part is greater than or equal to the number of the refrigerant flow paths in the fourth heat exchange part, and the number of the refrigerant flow paths in the fourth heat exchange part is greater than or equal to the number of the refrigerant flow paths in the fifth heat exchange part.

17. An air conditioner characterized by comprising: The air conditioner comprises the heat pump system according to any one of claims 1 to 16.

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