Dishwasher heat pump system and dishwasher

Abstract

Provided is a dishwasher heat pump system, comprising a main circuit (A), a first branch circuit (c), a second branch circuit (d), a third branch circuit (e), and a fourth branch circuit (f). The dishwasher heat pump system comprises a compressor (1), a first valve element (2), a first condenser (4), a first evaporator (9), a second condenser (3), a second evaporator (8), and a throttling device (71). The compressor (1) and the throttling device (71) are both arranged in the main circuit (A), the first condenser (4) is arranged in the first branch circuit (c), the first evaporator (9) is arranged in the third branch circuit (e), the second condenser (3) is arranged in the second branch circuit (d), and the second evaporator (8) is arranged in the fourth branch circuit (f). The first condenser (4) and the second condenser (3) are connected in parallel, and the first evaporator (9) and the second evaporator (8) are connected in parallel. The main circuit (A) is in communication with either the first branch circuit (c) or the second branch circuit (d), and is in communication with either the third branch circuit (e) or the fourth branch circuit (f). Further provided is a dishwasher. The dishwasher heat pump system is provided with two condensers and two evaporators to form different heat exchange flow paths, and the heat exchange flow paths can be independent of each other, making the dishwasher heat pump system highly efficient and energy-saving.

Description

Dishwasher heat pump system and dishwasher Technical Field

[0001] The present invention belongs to the technical field of dishwashers, and in particular relates to a dishwasher heat pump system and a dishwasher. Background Art

[0002] A dishwasher is a device used to automatically wash tableware such as bowls, chopsticks, plates, dishes and knives, and heat generation is a core functional requirement of the dishwasher, which will affect the overall performance of the dishwasher. At present, the heat generation in the high-temperature cleaning stage of the dishwasher mainly adopts the electric heating mode, which has high energy consumption. As the market's requirements for energy efficiency ratio become higher and higher, the application of electric heating mode in dishwashers will decrease. The mainstream direction of market development is energy conservation and environmental protection. The application of dishwasher heat pump system to the dishwasher field has opened up a new heating and drying method, which greatly reduces energy consumption and has a better user experience. In the related technology, the setting of the evaporator or condenser of the dishwasher heat pump system makes the dishwasher heat pump system unable to achieve high efficiency and energy saving.

[0003] Summary of the Invention

[0004] The present application aims to provide a dishwasher heat pump system, comprising a main circuit, a first branch circuit, a second branch circuit, a third branch circuit, and a fourth branch circuit, wherein the main circuit, the first branch circuit, the second branch circuit, the third branch circuit, and the fourth branch circuit can all be used to circulate refrigerant;

[0005] The dishwasher heat pump system includes a compressor, a first condenser, a first evaporator, a second condenser, a second evaporator, and a throttling device. The compressor and the throttling device are both arranged on the main circuit, the first condenser is arranged on the first branch circuit, the first evaporator is arranged on the third branch circuit, the second condenser is arranged on the second branch circuit, and the second evaporator is arranged on the fourth branch circuit; the first condenser and the second condenser are connected in parallel, and the first evaporator and the second evaporator are connected in parallel.

[0006] The main road is connected to the first branch road or the second branch road; the main road is connected to the third branch road or the fourth branch road.

[0007] In the present application, the dishwasher heat pump system is provided with two condensers and two evaporators, wherein the first condenser and the first evaporator are respectively arranged in the first branch and the third branch, and the second condenser and the second evaporator are respectively arranged in the second branch and the fourth branch. The first branch and the third branch are both connected to the main road to form a heat exchange flow path, or the second branch and the fourth branch are both connected to the main road to form a heat exchange flow path, or the first branch and the fourth branch are both connected to the main road to form a heat exchange flow path, or the second branch and the third branch are both connected to the main road to form a heat exchange flow path. Each heat exchange flow path is independent of each other, making the dishwasher heat pump system efficient and energy-saving.

[0008] The present application also provides a dishwasher, comprising a main path, a bypass flow path, a first branch path, and a second branch path; the main path, the bypass flow path, the first branch path, and the second branch path are all used to circulate refrigerant;

[0009] The dishwasher includes a compressor, a first valve, a first condenser, and a second condenser. The bypass flow path has a first end and a second end. The first end is connected between the compressor and the second condenser, and the second end is connected between the first condenser and the second condenser.

[0010] The first valve member can be used to control the communication between the main path and the bypass path or the second branch path;

[0011] The first condenser has a first refrigerant branch, the second condenser has a second refrigerant branch, the first branch includes the first refrigerant branch, the second branch includes the second refrigerant branch, and the compressor is arranged on the main circuit.

[0012] In the present application, the dishwasher has a main path, a bypass flow path, a first branch and a second branch, and the dishwasher includes a first valve component. By controlling the first valve component, the main path can be connected to the bypass flow path or the second branch. The first branch includes a first refrigerant branch, and the second branch includes a second refrigerant branch. According to the corresponding operating mode, the main path can be connected to the bypass branch, or the main path can be connected to the first branch, so that the dishwasher heat pump system is efficient and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a schematic diagram of the overall structure of an embodiment of a dishwasher heat pump system in this application;

[0014] FIG2 is a schematic structural diagram of an embodiment of the first condenser in the present application;

[0015] FIG3 is a structural diagram of an embodiment of the communication relationship between the first condenser and the water tank in the present application;

[0016] FIG4 is a schematic diagram of the overall structure of an embodiment of a dishwasher heat pump system in the present application;

[0017] FIG5 is a schematic diagram of the overall structure of another embodiment of a dishwasher heat pump system in the present application;

[0018] FIG6 is a schematic structural diagram of the refrigerant flow path of the dishwasher heat pump system in this application;

[0019] FIG7 is a schematic structural diagram of one embodiment of a refrigerant flow path of a dishwasher heat pump system in the present application;

[0020] FIG8 is a schematic structural diagram of an embodiment of a washing liquid flow path of a dishwasher heat pump system in the present application;

[0021] FIG9 is a schematic structural diagram of another embodiment of a washing liquid flow path of a dishwasher heat pump system in the present application;

[0022] FIG10 is a schematic diagram of the path of the washing mode of the dishwasher heat pump system in this application;

[0023] FIG11 is a schematic diagram of the path of the drying mode of the dishwasher heat pump system in this application. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0025] It should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0026] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. "Include" or "comprising" and similar words mean that the elements or objects preceding "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects.

[0027] The diagrams shown in Figures 1 to 3 are a dishwasher heat pump system that complies with the present application; the dishwasher heat pump system includes a main path A, a first branch c, a second branch d, a third branch e and a fourth branch f; the main path A, the first branch c, the second branch d, the third branch e and the fourth branch f are connected; the main path A, the first branch c, the second branch d, the third branch e and the fourth branch f can all be used to circulate refrigerant.

[0028] In some embodiments, the dishwasher heat pump system includes a compressor 1, a first condenser 4, a first evaporator 9, a second condenser 3, a second evaporator 8 and a throttling device 71, the compressor 1 and the throttling device 71 are both arranged on the main line A, the first condenser 4 is arranged on the first branch c, the second condenser 3 is arranged on the second branch d, the first evaporator 9 is arranged on the third branch e, and the second evaporator 8 is arranged on the fourth branch f; the first condenser 4 and the second condenser 3 are connected in parallel, and the first evaporator 9 and the second evaporator 8 are connected in parallel; the main line A is connected to the first branch c or the second branch d; the main line A is connected to the third branch e or the fourth branch f.

[0029] In this application, the first condenser 4 and the first evaporator 9 in the dishwasher heat pump system are respectively arranged in the first branch c and the third branch e, and the second condenser 3 and the second evaporator 8 are respectively arranged in the second branch d and the fourth branch f. The first branch c and the third branch e are both connected to the main road A to form a heat exchange flow path, or the second branch d and the fourth branch f are both connected to the main road A to form a heat exchange flow path. The heat exchange flow paths are independent of each other, so that the dishwasher heat pump system can achieve the effect of reducing energy consumption.

[0030] In some embodiments, the main path A includes a first main path a1 and a second main path a2, the dishwasher heat pump system includes a liquid reservoir 5, the compressor 1 is arranged on the first main path a1, and the liquid reservoir 5 and the throttling device 71 are both arranged on the second main path a2; further, the first condenser 4 and the second condenser 3 are connected in parallel between the compressor 1 and the throttling device 71, and the first evaporator 9 and the second evaporator 8 are also connected in parallel between the compressor 1 and the throttling device 71; wherein the first main path a1 is connected to the first branch c or the second branch d, and the second main path a2 is connected to the third branch e or the fourth branch f.

[0031] In some embodiments, the dishwasher heat pump system includes a first valve component 2 and a control valve 81, the first valve component 2 is used to switch the main path A to communicate with the first branch c or the second branch d; the control valve 81 is used to switch the main path A to communicate with the third branch e or the fourth branch f; further, the first valve component 2 is used to switch the first main path a1 to communicate with the first branch c or the second branch d; the control valve 81 is used to switch the second main path a2 to communicate with the third branch e or the fourth branch f.

[0032] In some embodiments, the first valve component 2 in the dishwasher heat pump system is used to switch the connection status or different operating modes between the components of the dishwasher heat pump system. The first valve component 2 has a first valve port 201, a second valve port 202 and a third valve port 203. The first valve port 201 can selectively disconnect or connect the second valve port 202 and the third valve port 203; when the first valve port 201 is connected to the second valve port 202, the second valve port 202 can be connected to the first branch c; when the first valve port 201 is connected to the third valve port 203, the first main path a1 can be connected to the second branch d. By changing the connection relationship of the valve ports of the first valve component 2, different operating modes can be switched to form different independent heat exchange channels, thereby improving the operating performance of the system and achieving high efficiency and energy saving.

[0033] In some embodiments, the control valve 81 in the dishwasher heat pump system also switches between different operating modes by selecting and switching the connectivity of different valve ports to achieve the purpose of cooling or heating; wherein, the control valve 81 has a fourth valve port 801, a fifth valve port 802 and a sixth valve port 803, and the control valve 81 is connected between the throttling device 71 and the first evaporator 9, or, the control valve 81 is connected between the throttling device 71 and the second evaporator 8.

[0034] Furthermore, in some embodiments, the fourth valve port 801 can be selectively connected to the fifth valve port 802 or to the sixth valve port 803, thereby switching different operating modes; specifically, when the sixth valve port 803 is closed, the fourth valve port 801 is connected to the fifth valve port 802, and then the second main path a2 is connected to the third branch e; when the fifth valve port 802 is closed, the fourth valve port 801 is connected to the sixth valve port 803, and then the second main path a2 is connected to the fourth branch f.

[0035] In some embodiments, the dishwasher heat pump system includes a temperature and pressure (P / T) sensor, which is arranged on the main line A. Further, the temperature and pressure sensor is arranged on the first main a1; in some embodiments, the P / T sensor is connected between the compressor 1 and the first valve 2 to detect the high and low pressures and temperatures of the refrigerant in the dishwasher heat pump system.

[0036] In some embodiments, the first condenser 4 includes a first channel 311 and a second channel 312, the first channel 311 is used to circulate refrigerant, and the second channel 312 is used to circulate washing liquid; the first branch c includes the first channel 311; the first channel 311 is connected to the second valve port 202, the refrigerant enters the first channel 311 through the second valve port 202, flows in the first channel 311, and the washing liquid flows in the second channel 312. The refrigerant releases a large amount of heat through the first channel 311 of the first condenser 4, heating the washing liquid flowing into the second channel 312.

[0037] In some embodiments, the dishwasher heat pump system includes a fifth branch F, the fifth branch F has a first flow channel, the first flow channel includes a first inlet 131 and a first outlet 132; the second channel 312 of the first condenser 4 is connected to the fifth branch F; the dishwasher heat pump system also includes a spray device, which is arranged in the fifth branch F, and the spray device is used to spray washing liquid into the dishwasher heat pump system cavity 12; the second channel 312 is respectively connected to the first inlet 131 and the first outlet 132, and the heated washing liquid is sprayed into the dishwasher heat pump system cavity through the spray device, and the first channel 311 is connected to the throttling device 71, so that the refrigerant can flow into the throttling device 71, as shown in Figure 2.

[0038] Furthermore, in some embodiments, the dishwasher heat pump system includes a first drive device 161, which is arranged in the fifth branch F. The first drive device 161 is connected to the first condenser 4 and is used to provide power for the flow of washing liquid, so that the washing liquid in the second channel 312 flows to the spray device.

[0039] In some embodiments, when the heat exchange area of ​​the first condenser 4 is small or the amount of washing liquid introduced into the second channel 312 is large, a water tank 151 is provided in the dishwasher heat pump system, and the first flow channel is connected to the inner cavity of the water tank 151, so that the washing liquid in the first flow channel can be stored in the water tank 151.

[0040] In some embodiments, the dishwasher heat pump system includes a first flow path G and a second flow path H, and the first flow path G and the second flow path H are connected in parallel. The second flow path H is further provided with a spraying device for spraying washing liquid.

[0041] In some embodiments, the dishwasher heat pump system includes a water tank 151, the first condenser 4 and the water tank 151 are both arranged in the second flow path H, the second flow path H includes a first sub-flow path K, the first sub-flow path K has a first sub-flow channel, the first sub-flow channel is used to circulate washing liquid, the first sub-flow channel is connected to the inner cavity of the water tank 151, and the water tank 151 is used to circulate washing liquid; the first sub-flow channel has an inlet 110 and an outlet 111; one end of the first flow path G is connected to the water tank 151, and the other end of the first flow path G is connected between the first condenser 4 and the inlet 110; the first flow path G has a second sub-flow channel, and the second flow path H has a third sub-flow channel, and the second sub-flow channel and the third sub-flow channel are both used to circulate washing liquid; the first sub-flow path K is connected to the first flow path G, and the inner cavity of the water tank 151 is connected to the second sub-flow channel or the third sub-flow channel.

[0042] In some embodiments, the first condenser 4 has a first channel 311 and a second channel 312, the second sub-channel has a channel inlet and a channel outlet, the channel inlet can be connected to the inner cavity of the water tank 151, and the channel outlet can be connected to the second channel 312; the first branch c includes the first channel 311, the first sub-channel includes the second channel 312, the second channel 312 is connected to the inner cavity of the water tank 151, and the inner cavity of the water tank 151, the second sub-channel, and the third sub-channel are all connected to the second channel 312.

[0043] Furthermore, in some embodiments, both the first flow path G and the second flow path H are provided with a shut-off valve (not shown) for switching the washing liquid to flow to the second sub-channel or the third sub-channel; at least one of the water tank 151, the first flow path G and the second flow path H is provided with a temperature sensor to detect the temperature of the washing liquid in the water tank 151, the first flow path G or the second flow path H.

[0044] Specifically, in some embodiments, the washing liquid flows into the second channel 312 through the inlet, and the refrigerant in the first channel 311 releases heat to heat the washing liquid in the second channel 312. The washing liquid in the second channel 312 flows into the inner cavity of the water tank 151, and then flows into the second sub-channel of the first flow path G. The second sub-channel of the first flow path G is connected to the second channel 312. When the washing liquid in the water tank does not reach the required temperature, the stop valve on the second flow path H is closed, and the stop valve on the first flow path G is opened. The washing liquid in the inner cavity of the water tank 151 flows into the second channel 312 through the second sub-channel of the first flow path G, and is again heated in the second channel 312. The above steps are repeated until the required temperature is reached. The stop valve on the first flow path G is closed, and the stop valve on the second flow path H is opened. The washing liquid in the inner cavity of the water tank 151 flows through the third sub-channel of the second flow path H and is sprayed through the spray port of the spray device into the washing chamber of the dishwasher heat pump system to perform high-temperature cleaning of the dishes, as shown in FIG.

[0045] Furthermore, in some embodiments, the first flow path G is provided with a first driving pump 171 for providing power for the flow of the washing liquid and transporting the washing liquid to the first sub-flow channel, and the second flow path H is provided with a second driving pump 181 for providing power for the flow of the washing liquid and transporting the washing liquid to the spraying device, as shown in Figure 3.

[0046] In some embodiments, the dishwasher heat pump system includes a liquid reservoir 5, which is arranged in the second main path a2, one end of the liquid reservoir 5 is connected to the first condenser 4, and the other end is connected to the throttling device 71; or, one end of the liquid reservoir 5 is connected to the second condenser 3, and the other end is connected to the throttling device 71. The liquid reservoir 5 can play a role in regulating the refrigerant flow, and then adjust the required refrigerant flow according to demand.

[0047] Since liquid generally flows from high pressure to low pressure, in order to ensure that the water flow in the dishwasher heat pump system can flow in a certain direction and prevent backflow, in some embodiments, the dishwasher heat pump system has a first one-way valve 43 and a second one-way valve 44. The first one-way valve 43 is arranged in the first branch c, one end of the first one-way valve 43 is connected to the first condenser 4, and the other end of the first one-way valve 43 is connected to the liquid reservoir 5, so that the refrigerant in the first branch c flows to the second main path a2, and controls the one-way flow of the refrigerant from the first condenser 4 to the throttling device 71; the second one-way valve 44 is arranged in the second branch d, one end of the second one-way valve 44 is connected to the second condenser 3, and the other end of the second one-way valve 44 is connected to the throttling device 71, so that the refrigerant in the third branch e flows to the second main path a2, and controls the one-way flow of the refrigerant from the second condenser 3 to the throttling device 71.

[0048] In some embodiments, the throttling device 71 is connected between the liquid reservoir 5 and the control valve 81 to adjust the refrigerant flow and evaporation pressure in the dishwasher heat pump system.

[0049] In some embodiments, the dishwasher heat pump system includes a first fan 10 and a second fan 11. The first fan 10 is arranged near the first evaporator 9 and can be used to drive the flow of air around the first evaporator 9. The purpose of heat exchange is achieved by providing air volume to the first evaporator 9. The air volume provided by the first fan 10 can also be provided by the environment, and the purpose of heat exchange is achieved by connecting with the external environment. A filter is provided on the windward side of the first fan 10 to filter impurities; similarly, the second fan 11 is arranged near the second condenser 3 and can be used to drive the flow of air around the second condenser 3. Installing the second fan 11 near the second condenser 3 can provide power for the wind, make the air flow flow, and at the same time make the second fan 11 have a good operating condition.

[0050] It should be noted that the first fan 10 and the second fan 11 in the present application can be selected from centrifugal fans or axial flow fans.

[0051] In some embodiments, the dishwasher heat pump system has a first air duct 100, and the first evaporator 9 and the first fan 10 are both located in the first air duct 100; the first fan 10 is located on one side of the first evaporator 9, and relative to the first fan 10, the first evaporator 9 is close to the compressor 1; the first air duct 100 is connected to the external environment.

[0052] In some embodiments, the dishwasher heat pump system has a second air duct 200 , the second condenser 3 , the second fan 11 and the second evaporator 8 are all located in the second air duct 200 ; the first condenser 4 and the first evaporator 9 are both located outside the second air duct 200 .

[0053] In the present application, the dishwasher heat pump system includes a cleaning mode. In the cleaning mode, the first main path a1 is connected to the first branch path c, the first branch path c is connected to the second main path a2, the second main path a2 is connected to the third branch path e, and the third branch path e is connected to the first main path a1, that is, the refrigerant flows to the first valve component 2 through the compressor 1, the first valve port 201 of the first valve component 2 is switched to be connected to the second valve port 202, the third valve port 203 is closed, the first main path a1 is connected to the first channel 311 of the first condenser 4, the refrigerant flows to the first one-way valve 43 through the first channel 311, and then flows to the liquid reservoir 5 through the first one-way valve 43, the liquid reservoir 5 is connected to the throttling device 71, the refrigerant flows to the control valve 81 through the throttling device 71, the sixth valve port 803 is closed, the fourth valve port 801 is connected to the fifth valve port 802, the refrigerant flows to the first evaporator 9, and flows back to the compressor 1 through the first evaporator 9, completing a heating cycle.

[0054] It should be noted that the washing liquid mentioned in this application is water, which is only an example and is not limited to water. It can also be a cleaning agent or a liquid mixed with water and cleaning agent; the refrigerant includes but is not limited to R22, R32, R290, R410A, etc.

[0055] Specifically, in some embodiments, when switching to the cleaning mode, the first fan 10 is running, the second fan 11 is turned off, the low-temperature and low-pressure refrigerant is compressed by the compressor 1 into a high-temperature and high-pressure gas, the compressor 1 is connected to the first valve member 2, the first valve port 201 of the first valve member 2 is switched to be connected to the second valve port 202, the third valve port 203 is closed, the first main path a1 is connected to the first channel 311 of the first condenser 4, the high-temperature and high-pressure gas enters the first channel 311 of the first condenser 4 to release heat and become a medium-temperature and high-pressure liquid refrigerant, and heats the water in the second channel 312, and then enters the liquid reservoir 5 through the first one-way valve 43, and then passes through the throttling device 71 to become a low-temperature and low-pressure liquid refrigerant, and then Through the control valve 81, the low-temperature and low-pressure liquid refrigerant enters the first evaporator 9 in the second branch d, and is converted into a low-temperature and low-pressure gas through heat absorption and evaporation and returns to the compressor 1, forming an independent heat exchange flow path, thereby achieving the purpose of cleaning the dishes in the cavity of the dishwasher heat pump system. Since the required heat is high in the cleaning mode, the first condenser 4 or the first evaporator 9 requires a larger heat exchange area. By using an independent first condenser 4 and the first evaporator 9, the heat exchange area of ​​the first condenser 4 and the first evaporator 9 can be set according to the internal environment in the cavity, so that the working condition can operate better, and at the same time, it can increase the service life of the compressor, so that the dishwasher heat pump system can achieve energy-saving and high-efficiency effects.

[0056] In addition, when the amount of water flowing into the second channel 312 of the first condenser 4 is small, or the heat exchange area of ​​the first condenser 4 is large, the first condenser 4 can provide water to the dishwasher heat pump system cavity in the form of direct heat, so as to meet the high-temperature water requirement of the dishwasher heat pump system cavity, as shown in Figure 2; when the amount of water flowing into the second channel 312 of the first condenser 4 is large or the heat exchange area of ​​the first condenser 4 is small, the first condenser 4 can be connected to the water tank 151, and the water with a temperature lower than the required temperature is first stored in the inner cavity of the water tank 151, and then the water is returned to the second channel 312 and continued to be heated until the water temperature required by the dishwasher heat pump system cavity is reached.

[0057] In the present application, the dishwasher heat pump system includes a drying mode. In the drying mode, the main path A is connected with the second branch d and the fourth branch f, that is, the first main path a1 is connected with the second branch d, the second branch d is connected with the second main path a2, the second main path a2 is connected with the fourth branch f, and the fourth branch f is connected with the first main path a1, that is, the refrigerant flows to the first valve member 2 through the compressor 1, the second valve port 202 is closed, the first valve port 201 is connected with the third valve port 203, the refrigerant flows to the second condenser 3 through the third valve port 203, flows to the liquid storage tank 5 through the second condenser 3, and then flows to the throttling device 71, flows to the second evaporator 8 through the sixth valve port 803 of the control valve 81, and then returns to the compressor 1 through the second evaporator 8.

[0058] Furthermore, in some embodiments, when the drying mode is switched, the first fan 10 is turned off, the second fan 11 is running, the low-temperature and low-pressure refrigerant is compressed by the compressor 1 into a high-temperature and high-pressure gas, the compressor 1 is connected to the first valve member 2, the first valve port 201 of the first valve member 2 is switched to be connected to the third valve port 203, the second valve port 203 is closed, the first main path a1 is connected to the second branch d, the high-temperature and high-pressure gas enters the second condenser 3 in the second branch d, releases heat and becomes a medium-temperature and high-pressure liquid refrigerant, and then enters the liquid storage 5 through the second one-way valve 44, and then passes through the liquid storage 5. The throttling device 71 turns the refrigerant into a low-temperature, low-pressure liquid refrigerant, which then passes through the control valve 81 and enters the second evaporator 8 in the fourth branch f. The refrigerant absorbs the heat of the high-temperature, high-humidity gas and turns into a low-temperature, low-pressure gas and returns to the compressor 1, thereby forming an independent closed drying circuit that is not connected to the outside world, reducing the secondary contamination of the tableware in the cavity of the dishwasher heat pump system. At the same time, the use of a second condenser or a second evaporator with a suitable heat exchange area can enable the circulating heat exchange flow path in the drying mode to operate better, thereby achieving energy saving and high efficiency.

[0059] In the present application, there is an independent circulating air duct in the drying mode. At the beginning of the drying stage, the cavity of the dishwasher heat pump system is filled with high-temperature and high-humidity gas. The second fan 11 provides power for the circulating air. The high-temperature and high-humidity gas releases heat and condenses through the second evaporator 8 to form droplets, turning into low-temperature and high-humidity gas. Then, it absorbs heat through the second condenser 3 and turns into high-temperature and low-humidity gas to enter the cavity of the dishwasher heat pump system. This is a cycle of drying the high-temperature and high-humidity gas in the cavity of the dishwasher heat pump system in the drying mode. In this cycle, the humidity in the cavity of the dishwasher heat pump system will continue to decrease until the drying requirements are met; the water droplets formed on the surface of the second evaporator 8 can be discharged from the dishwasher heat pump system by setting up equipment such as a water receiving tray.

[0060] In drying mode, the second condenser 3 and the second evaporator 8 are in a high-temperature, high-humidity environment. Since the heat exchange area required by the second evaporator 8 may be relatively small, using an independent second evaporator 8 allows the heat exchange area of ​​the second evaporator 8 to be adjusted according to the environment in the cavity, enabling better operation, extending the service life of the compressor, and achieving energy-saving and high-efficiency results for the dishwasher heat pump system. If the same evaporator is shared between the cleaning mode and the drying mode, the heat exchange area required by the evaporator in the cleaning mode may be larger. However, in the drying mode, since the evaporator is in a high-temperature, high-humidity operating environment, the actual required heat exchange area is smaller. Therefore, if the drying mode and the cleaning mode share the same evaporator, the system will experience increased superheat in the dehumidification mode, the compressor exhaust temperature will increase, the operating conditions will be relatively poor, the system performance index will be low, and energy-saving and high-efficiency results will not be achieved.

[0061] Similarly, since the structures of the condensers used in the cleaning mode and the drying mode are different, the condenser in the cleaning mode is generally a closed structure with a refrigerant channel and a water channel, while the condenser in the drying mode is generally an open structure, and the heat exchange areas of the two are also different to a certain extent. If a condenser is shared, the heat exchange capacity of the condenser in different modes will be limited, which will lead to poor operating conditions of the dishwasher heat pump system and fail to achieve energy-saving and high-efficiency effects. To meet the different requirements of the cleaning mode and the drying mode, it is necessary to improve the structure of the condenser or the surrounding structure, which increases production costs on the one hand and may also place higher requirements on the space of the dishwasher heat pump system on the other hand. Therefore, the present application sets two condensers and two evaporators in the dishwasher heat pump system to form different independent heat exchange flow paths, making the dishwasher heat pump system efficient and energy-saving.

[0062] In some embodiments, in the dishwasher heat pump system, the first branch c and the fourth branch f can also be connected to the main path A to form a heat exchange flow path, or the second branch d and the third branch e can be connected to the main path A to form a heat exchange flow path.

[0063] The diagrams shown in Figures 4 to 11 are a dishwasher that complies with the present application, including a main path A, a bypass flow path b, a first branch path c, and a second branch path d; the main path A, the bypass flow path b, the first branch path c, and the second branch path d are all used to circulate refrigerant; the dishwasher includes a compressor 1, a first valve component 2, a first condenser 4, and a second condenser 3, the bypass flow path b has a first end 101 and a second end 102; the first end 101 is connected between the compressor 1 and the second condenser 3, and the second end 102 is connected between the first condenser 4 and the second condenser 3; the first valve component 2 can be used to control the connection between the main path A and the bypass flow path b or the second branch path d.

[0064] In some embodiments, the first condenser 4 has a first refrigerant branch 41, the second condenser 3 has a second refrigerant branch 31, the first branch c includes the first refrigerant branch 41, the second branch d includes the second refrigerant branch 31, and the compressor 1 is arranged in the main path A.

[0065] In the present application, the dishwasher has a main path A, a bypass flow path b and a second branch d, and the dishwasher heat pump system includes a first valve component 2. By controlling the first valve component 2, the main path A can be connected to the bypass flow path b or the second branch d. The first branch c includes a first refrigerant branch 41, and the second branch d includes a second refrigerant branch 31. According to the corresponding operating mode, the main path A can be selected to be connected to the bypass branch b, or the main path A can be selected to be connected to the second branch d, so that the dishwasher can achieve high efficiency and energy saving, while also reducing the condensation pressure of the dishwasher, so that the dishwasher can operate better.

[0066] In some embodiments, the first valve member is used to control the communication between the main path A and the bypass path b or the second branch path d; alternatively, the first valve member 2 can be used to control the communication between the first branch path c and the second branch path d or the bypass path b.

[0067] Referring to Figures 4, 5, and 6, in some embodiments, the compressor 1 is disposed on the main path A, and the first valve member 2 can be used to control the connection between the main path A and the bypass flow path b or the second branch d; the first end 101 has an inlet channel, and the second end 102 has an outlet channel. The main path A is connected to the inlet channel or the second branch d, and the first branch c and the second branch d are both connected to the outlet channel. In this application, the main path A can be connected to the inlet channel or the second branch d, and the first branch c and the second branch d are both connected to the outlet channel. In this case, the first refrigerant branch 41 is connected to the second refrigerant branch 31, and the first refrigerant branch 41 is connected to the second refrigerant branch 31, thereby reducing the condensing pressure of the dishwasher, enabling the dishwasher to have a better operating condition, and also achieving high efficiency and energy saving.

[0068] It should be understood that the first valve component 2 mentioned in the present application may be a multi-way valve, including but not limited to a three-way valve, a four-way valve, etc., and also includes other valve components that can realize switching flow path connectivity.

[0069] In some embodiments, the dishwasher has at least two air ducts, and the first condenser 4 and the second condenser 3 are located in different air ducts, respectively, wherein the heat exchange rate of the first condenser 4 is not lower than the heat exchange rate of the second condenser 3, and different operating modes are applied according to the size of the heat exchange rate of the first condenser 4 and the second condenser 3.

[0070] Referring to Figures 10 and 11, in some implementation modes, the dishwasher includes a washing mode and a drying mode; in the washing mode, the main path A is connected to the bypass flow path b; in the drying mode, the main path A is connected to the second branch d, and the first refrigerant branch 41 is connected to the second refrigerant branch 31.

[0071] Furthermore, in some embodiments, in the washing mode, the main path A is connected to the bypass flow path b, and the bypass flow path b is connected to the first branch c; in the drying mode, the main path A and the first branch c are both connected to the second branch d, that is, the first refrigerant branch 41 is connected to the second refrigerant branch 31.

[0072] 4 , 5 and 7 , in some embodiments, the first valve component 2 is a three-way valve having a first valve port 201, a second valve port 202 and a third valve port 203. The first valve component 2 is used to control the connection between the main path A and the bypass path b or the second branch d. In the washing mode, the main path A is connected to the first valve port 201, the first valve port 201 is switched to be connected to the second valve port 202, the second valve port 202 is connected to the inlet channel of the bypass path b, and the outlet channel of the bypass path b is connected to the first branch c. In the drying mode, the main path A is connected to the first valve port 201, the first valve port 201 is switched to be connected to the third valve port 203, the third valve port 203 is connected to the second branch d, and the second branch d and the first branch c are both connected to the outlet channel of the bypass path b.

[0073] The related technology uses the first condenser and the second condenser independently in the washing mode and the drying mode, which will cause the dishwasher to have a larger condensation pressure and affect the normal operation of the dishwasher; the present application switches the first valve member 2 to control the connection between the main path A and the bypass flow path b or the second branch d, thereby realizing different operating modes. In the drying mode, the first condenser 4 and the second condenser 3 are connected in series, and the first condenser 4 serves as an auxiliary condenser of the second condenser 3 to strengthen condensation, reduce the condensation pressure of the dishwasher, and at the same time reduce the exhaust temperature, so that the compressor 1 operates in good working condition, which is beneficial to the long-term stable operation of the dishwasher, and at the same time enables the dishwasher to achieve high efficiency and energy saving.

[0074] Referring to Figure 7, in some embodiments, the dishwasher includes a third branch e and a fourth branch f, both of which are used to circulate refrigerant; the dishwasher includes a first evaporator 9, a first throttle valve 7, a second evaporator 8 and a second throttle valve 6, the first throttle valve 7 is arranged on the third branch e, the second throttle valve 6 is arranged on the fourth branch f, the first evaporator 9 has a third refrigerant branch, and the second evaporator 8 has a fourth refrigerant branch; the third branch e includes a third refrigerant branch, and the fourth branch f includes a fourth refrigerant branch; the first throttle valve 7 and the second throttle valve 6 include but are not limited to electronic expansion valves.

[0075] Referring to Figures 4 and 5, in some embodiments, the dishwasher includes a first fan 10, the dishwasher heat pump system has a first air duct 100, the first evaporator 9 and the first fan 10 are both located in the first air duct 100, the first fan 10 is located on one side of the first evaporator 9, relative to the first fan 10, the first evaporator 9 is close to the compressor 1, the first air duct 100 is connected to the external environment, the first fan 10 can drive the wind in the external environment to dissipate heat from the compressor 1, and exchange the waste heat generated by the compressor 1 with the first evaporator 9, thereby achieving high efficiency and energy saving.

[0076] In some embodiments, the dishwasher includes a second fan 11, which is located on one side of the second condenser 3; the dishwasher has a second air duct 200, the second condenser 3, the second fan 11 and the second evaporator 8 are all located in the second air duct 200, and the first condenser 4 and the first evaporator 9 are both located outside the second air duct 200.

[0077] Referring to Figures 4, 5, 8 and 9, in some embodiments, the dishwasher includes a first main path g, a first sub-path h and a second sub-path k, the first sub-path h and the second sub-path k are both connected to the first main path g, and the first main path g, the first sub-path h and the second sub-path k are all used to circulate washing liquid; the first condenser 4 has a first coolant branch 42, the first sub-path h includes the first coolant branch 42, and the refrigerant in the first refrigerant branch 41 exchanges heat with the washing liquid in the first coolant branch 42.

[0078] In some embodiments, the dishwasher includes a sump 14 and a first pump 15, one end of the first main path g is connected to the sump 14, the other end of the first main path g is connected to the first sub-path h and the second sub-path k, the first pump 15 is arranged in the first main path g, the sump 14 is used to store washing liquid, and the first pump 15 is used to drive the washing liquid in the sump 14 to flow into the first main path g; further, one end of the first sub-path h is connected to the first main path g, and the other end of the first main path g is connected to the sump 14.

[0079] Referring to Figure 8, in some embodiments, the dishwasher includes a second valve component 16, which is arranged in the first sub-path h. The second valve component 16 is used to control the connection between the first main path g and the first sub-path h. When the second valve component 16 is opened, the first main path g is connected to the first sub-path h, and the washing liquid in the sump 14 flows into the first sub-path h and the second sub-path k respectively through the first main path g. The washing liquid flowing into the first sub-path h enters the first coolant branch 42 of the first condenser 4, absorbs the heat released by the first refrigerant branch 41, and realizes the heating of the washing liquid. The heated washing liquid returns to the sump 14 and circulates continuously until the washing temperature is met, and the second valve component 16 is closed.

[0080] Referring to Figure 9, in some embodiments, the second valve component 16 is connected to the first main flow g, and the second valve component 16 is used to control the connection between the first main flow g and the first sub-flow h or the second sub-flow k; according to different temperature requirements for the washing liquid, the first main flow g is controlled to be connected to the first sub-flow h or the second sub-flow k; when the washing liquid in the sump 14 needs to be heated, the second valve component 16 is switched to connect the first main flow g with the first sub-flow h, and the washing liquid flowing into the first sub-flow h enters the first coolant branch 42 of the first condenser 4, absorbs the heat released by the first refrigerant branch 41, and realizes the heating of the washing liquid; if it is heated to the target temperature, the second valve component 16 is switched to connect the first main flow g with the second sub-flow k.

[0081] It should be understood that the second valve component 16 mentioned in this application can be a solenoid valve or a multi-way valve. The multi-way valve includes but is not limited to a three-way valve, a four-way valve, etc., and also includes other valve components that can realize switching flow path connectivity.

[0082] Referring to Figures 4 and 5, in some embodiments, the dishwasher includes a washing cavity 18, and the second sub-path k is connected to the inner cavity of the washing cavity 18; the washing cavity 18 includes a spraying device 17, which is used to spray washing liquid, spraying the washing liquid in the second sub-path k into the washing cavity 18 to clean dishes and other tableware; the dishwasher includes a water treatment device 13 and a drainage device 19, and the water treatment device 13 and the drainage device 19 are both connected to the water collection tank 14; the water treatment device 13 includes a breather and a water softener.

[0083] In some embodiments, the second sub-path k has a fourth flow channel, which is connected to the inner cavity of the washing chamber 18 and has an outlet; the spray device 17 is arranged in the second sub-path k, and the outlet is arranged in the spray device 17, which is located in the inner cavity of the washing chamber 18.

[0084] In some embodiments, the second sub-path k includes a first sub-branch k1 and a second sub-branch k2, and the spray device 17 includes a first spray device and a second spray device, the first spray device is disposed in the first sub-branch k1, and the second spray device is disposed in the second sub-branch k2. Along the direction of gravity of the dishwasher, the inner cavity of the washing chamber 18 is at least partially located between the first spray device and the second spray device, and the washing liquid in the first sub-branch k1 and the second sub-branch k2 are respectively sprayed into the washing chamber 18. It should be noted that the direction of gravity mentioned in this application is always vertically downward.

[0085] In some embodiments, the dishwasher includes a water filling valve 12, which injects the washing liquid into the water collection tank 14 through a water treatment device 13 (breather and water softener); the dishwasher heat pump system also includes a liquid reservoir 5 and a pressure / temperature sensor 51. The liquid reservoir 5 is arranged in the first branch c for storing refrigerant, and the pressure / temperature sensor is arranged in the main line A. Furthermore, the pressure / temperature sensor is arranged in the main line A for detecting the high and low pressure and temperature parameters of the refrigerant in the dishwasher.

[0086] In some embodiments, the water collection tank 14 has an inlet and an outlet. In order to reduce blockage and contamination of the inlet and outlet of the water collection tank 14, a filtering device (not shown) is provided between the water collection tank 14 and the washing chamber 18 to filter impurities in the washing liquid; a disinfection device (not shown) can also be provided in the washing chamber 18 to disinfect dishes and other tableware.

[0087] Referring to FIG10 , in some embodiments, the operation process of the washing mode includes a refrigerant flow path and a washing liquid flow path; the refrigerant flow path is as follows: the compressor 1, the first fan 10 and the first pump 15 are in operation, the first valve member 2 controls the main path A to be connected to the bypass flow path b, the bypass flow path b is connected to the first branch path c, the low-temperature and low-pressure refrigerant gas passes through the compressor 1 and becomes a high-temperature and high-pressure gas, passes through the first valve member 2 and flows into the first condenser 4 to condense and release heat, and then becomes a high-pressure liquid refrigerant after releasing heat, and then passes through the liquid accumulator 5 and the second throttle valve. 6 is in a fully closed state, the first branch c is connected to the third branch e, and the third branch e is connected to the main path A. The liquid refrigerant is throttled by the first throttle valve 7. The throttled refrigerant is in a gas-liquid two-phase state and then enters the first evaporator 9 to absorb heat and evaporate. The first fan 10 drives the wind from the external environment to dissipate heat from the compressor 1 and exchanges heat with the first evaporator 9. After absorbing heat, it becomes a low-temperature and low-pressure refrigerant gas and returns to the compressor 1. This is a cycle of the refrigerant flow path in the washing mode of the dishwasher, the purpose of which is to heat the washing liquid.

[0088] In one embodiment, in the washing mode, the washing liquid flow path is: when the washing liquid in the sump 14 does not reach the target washing temperature, the second valve component 16 controls the first main path g to be connected with the first sub-path h, and the first pump 5 drives the washing liquid in the sump 14 to flow into the first sub-path h and the second sub-path k respectively. The washing liquid flowing into the first sub-path h is heated through the first coolant branch 42 of the first condenser 4, and the heated washing liquid flows back to the sump 14. The washing liquid flowing into the second branch k flows into the spray device 17 and is sprayed into the washing cavity 18, and then returns to the sump 14. This is a cycle of heating the washing liquid; after the washing liquid reaches the target temperature, the second valve component 16 controls the first main path g to be disconnected from the first sub-path h, and the washing liquid with the target temperature enters the washing cavity 18 through the first sub-branch k1 and the second sub-branch k2, thereby reducing the power consumption of the first pump 15 and achieving energy-saving effects.

[0089] Referring to FIG. 11 , in some embodiments, the operation process of the drying mode includes a refrigerant flow path and an air flow path; the refrigerant flow path is as follows: the compressor 1 and the second fan 11 are in operation, the first valve member 2 controls the main path A to communicate with the second branch path d, the second branch path d to communicate with the first branch path c, and the first refrigerant branch path 41 to communicate with the second refrigerant branch path 31. The low-temperature, low-pressure refrigerant gas becomes a high-temperature, high-pressure gas after passing through the compressor 1. It flows through the first valve member 2 into the second condenser 3 and the first condenser 4 in sequence for condensation, releasing heat and becoming a high-pressure liquid refrigerant. It then passes through the liquid accumulator 5, the second throttle valve 7 is in a fully closed state, the first branch path c is connected to the fourth branch path f, and the fourth branch path f is connected to the main path A. The liquid refrigerant is throttled by the second throttle valve 6. After throttling, the refrigerant is in a gas-liquid two-phase state, then enters the second evaporator 8 to absorb heat and evaporate. After absorbing heat, it becomes a low-temperature, low-pressure refrigerant gas and returns to the compressor 1. This is a cycle of the drying mode of the dishwasher heat pump system until the dehumidification requirement is met.

[0090] In some embodiments, in the drying mode, the air circulation path is as follows: after the washing mode ends, the gas in the washing cavity 18 is high-temperature and high-humidity gas. When the drying mode is running, these high-temperature and high-humidity gases are first cooled by the surface of the second evaporator 8 driven by the second fan 11, and the water vapor is condensed. Then, the gas absorbs heat through the second condenser 3 and becomes high-temperature gas, which flows into the washing cavity 18. The water droplets on the surface of the dishes absorb heat and evaporate into water vapor. This is a cycle of the dehumidification stage. The water droplets formed on the surface of the second evaporator 8 are discharged from the dishwasher through the water receiving tank and other equipment. In this cycle, the humidity in the washing cavity 18 will decrease until the drying requirements are met.

[0091] The present application also provides a dishwasher, including the above-mentioned dishwasher heat pump system, which has a closed dishwasher cavity, the second evaporator 8 and the second condenser 3 are both located in the dishwasher cavity, and the first evaporator 9 and the first condenser 4 are both located outside the dishwasher cavity. The second evaporator 8, the second condenser 3 and the dishwasher cavity form a closed channel, which, on the one hand, can prevent contact with the external environment, avoid contamination of the dishwasher cavity and secondary contamination of dishes in the cavity; on the other hand, using a separate evaporator and condenser in the drying mode can enable the system to operate better and achieve the effect of energy saving and consumption reduction.

[0092] In some embodiments, in a dishwasher, the first branch c and the fourth branch f may be connected to the main path A to form a heat exchange flow path, or the second branch d and the third branch e may be connected to the main path A to form a heat exchange flow path.

[0093] It should be understood that the heat exchange area of ​​the first evaporator 9 in the present application is not smaller than that of the second evaporator 8. Since the washing liquid needs to be heated in the washing mode, the dishwasher heat pump system requires a larger heating power, the condenser has a larger heat load, and an evaporator with a larger heat exchange area is required to ensure the stable operation of the dishwasher heat pump system. In the drying mode, the high-temperature and high-humidity gas in the washing cavity 18 is dried, and a larger heat load is not required. Therefore, the heat exchange area of ​​the second evaporator 8 is not larger than that of the first evaporator 9, so as to achieve high efficiency and energy saving.

[0094] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with this profession can make slight changes or modifications to equivalent embodiments with equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A dishwasher heat pump system, wherein: The dishwasher heat pump system comprises a main circuit (A), a first branch circuit (c), a second branch circuit (d), a third branch circuit (e) and a fourth branch circuit (f); the main circuit (A), the first branch circuit (c), the second branch circuit (d), the third branch circuit (e) and the fourth branch circuit (f) can all be used to circulate refrigerant; the first branch circuit (c), the second branch circuit (d), the third branch circuit (e) and the fourth branch circuit (f) are all connected to the main circuit (A); The dishwasher heat pump system comprises a compressor (1), a first condenser (4), a first evaporator (9), a second condenser (3), a second evaporator (8) and a throttling device (71); the compressor (1) and the throttling device (71) are both arranged on the main path (A); the first condenser (4) is arranged on the first branch (c); the first evaporator (9) is arranged on the third branch (e); the second condenser (3) is arranged on the second branch (d); and the second evaporator (8) is arranged on the fourth branch (f); the first condenser (4) and the second condenser (3) are connected in parallel; and the first evaporator (9) and the second evaporator (8) are connected in parallel; The main road (A) is connected to the first branch road (c) or the second branch road (d); the main road (A) is connected to the third branch road (e) or the fourth branch road (f).

2. The dishwasher heat pump system according to claim 1, wherein: The main path (A) comprises a first main path (a1) and a second main path (a2), the compressor (1) is arranged on the first main path (a1), and the throttling device (71) is arranged on the second main path (a2); The first main road (a1) is connected to the first branch road (c) or the second branch road (d); the second main road (a2) is connected to the third branch road (e) or the fourth branch road (f).

3. The dishwasher heat pump system according to claim 2, wherein: The dishwasher heat pump system comprises a first valve component (2) and a control valve (81), wherein the first valve component (2) is used to control the first main path (a1) to be connected to the first branch path (c) or the second branch path (d), and the control valve (81) is used to control the second main path (a2) to be connected to the third branch path (e) or the fourth branch path (f).

4. The dishwasher heat pump system according to any one of claims 1 to 3, wherein: The dishwasher heat pump system comprises a first one-way valve (43) and a second one-way valve (44); The first one-way valve (43) is arranged in the first branch (c), and the first one-way valve (43) is used to control the one-way flow of the refrigerant from the first condenser (4) to the throttling device (71); The second one-way valve (44) is arranged in the second branch (d), and the second one-way valve (44) is used to control the one-way flow of the refrigerant from the second condenser (3) to the throttling device (71).

5. The dishwasher heat pump system according to any one of claims 1 to 4, wherein: The dishwasher heat pump system comprises a liquid reservoir (5); the liquid reservoir (5) is arranged in the main path (A), the liquid reservoir (5) is connected between the first condenser (4) and the throttling device (71), and the liquid reservoir (5) is connected between the second condenser (3) and the throttling device (71).

6. The dishwasher heat pump system according to any one of claims 1 to 5, wherein: The dishwasher heat pump system comprises a first fan (10) and a second fan (11); the first fan (10) can be used to drive the flow of air around the first evaporator (9); and the second fan (11) can be used to drive the flow of air around the second condenser (3).

7. The dishwasher heat pump system according to claim 6, wherein: The dishwasher heat pump system comprises a first air duct (100) and a second air duct (200), the first evaporator (9) and the first fan (10) are both located in the first air duct (100), and the first air duct (100) is connected to the external environment; The second condenser (3), the second fan (11) and the second evaporator (8) are all located in the second air duct (200); and the first condenser (4) and the first evaporator (9) are both located outside the second air duct (200).

8. The dishwasher heat pump system according to any one of claims 1 to 7, wherein: The dishwasher heat pump system comprises a fifth branch (F), the dishwasher heat pump system comprises a spray device, the spray device is arranged on the fifth branch (F), and the spray device is used to spray washing liquid; The fifth branch (F) has a first flow channel, and the first flow channel is used to circulate the washing liquid, the first flow channel having a first inlet (131) and a first outlet (132); The first condenser (4) has a first channel (311) and a second channel (312), the first channel (311) is used for circulating the refrigerant, and the first branch (c) includes the first channel (311); the second channel (312) is used for circulating the washing liquid, and the first inlet (131) and the first outlet (132) can both be connected to the second channel (312).

9. The dishwasher heat pump system according to claim 8, wherein: The dishwasher heat pump system comprises a first driving device (161), wherein the first driving device (161) is arranged on the fifth branch (F); The first driving device (161) can be used to drive the washing liquid in the second channel (312) to flow into the spraying device.

10. The dishwasher heat pump system according to any one of claims 1 to 7, wherein: The dishwasher heat pump system comprises a first flow path (G) and a second flow path (H), the dishwasher heat pump system comprises a spray device, the spray device is arranged in the second flow path (H), and the spray device is used to spray the washing liquid; The dishwasher heat pump system comprises a water tank (151); the first condenser (4) and the water tank (151) are arranged in the second flow path (H); the second flow path (H) comprises a first sub-flow path (K); the first sub-flow path (K) comprises a first sub-flow channel; the first sub-flow channel is used to circulate washing liquid; the first sub-flow channel is connected to the inner cavity of the water tank (151); the water tank (151) is used to circulate washing liquid; the first sub-flow channel comprises an inlet (110) and an outlet (111); One end of the first flow path (G) is connected to the water tank (151), and the other end of the first flow path (G) is connected between the first condenser (4) and the inlet (110); The first flow path (G) has a second sub-flow channel, the second flow path (H) has a third sub-flow channel, and the second sub-flow channel and the third sub-flow channel are both used to circulate the washing liquid; the inner cavity of the water tank (151) is connected to the second sub-flow channel or the third sub-flow channel.

11. The dishwasher heat pump system according to claim 10, wherein: The first condenser (4) has a first channel (311) and a second channel (312), the first channel (311) is used for circulating the refrigerant, and the second channel (312) is used for circulating the washing liquid; The second sub-flow channel has a flow channel inlet and a flow channel outlet, the flow channel inlet can be communicated with the inner cavity of the water tank (151), and the flow channel outlet can be communicated with the second channel (312); The first branch (c) includes the first channel (311), the first sub-channel (K) includes the second channel (312), and the inner cavity of the water tank (151), the second sub-channel, and the third sub-channel are all connected to the second channel (312).

12. The dishwasher heat pump system according to claim 11, wherein: The dishwasher heat pump system comprises a first driving pump (171) and a second driving pump (181); the first driving pump (171) is arranged in the first flow path (G), and the first driving pump (171) can drive the washing liquid in the inner cavity of the water tank (151) to flow into the second channel (312); the second driving pump (181) is arranged in the second flow path (H), and the second driving pump (181) can drive the washing liquid in the inner cavity of the water tank (151) to flow into the spray device.

13. The dishwasher heat pump system according to any one of claims 10 to 12, wherein: The first flow path (G) and the second flow path (H) are both provided with a stop valve; At least one of the water tank (151), the first flow path (G), and the second flow path (H) is provided with a temperature sensor, and the temperature sensor is used to detect the temperature of the washing liquid.

14. The dishwasher heat pump system according to any one of claims 1 to 13, wherein: The dishwasher heat pump system comprises a temperature and pressure sensor, which is arranged in the main path (A) and can be used to detect the high and low pressures and temperature of the refrigerant in the dishwasher heat pump system.

15. The dishwasher heat pump system according to any one of claims 1 to 14, wherein: The dishwasher heat pump system has a cleaning mode and a drying mode; In the cleaning mode, the main path (A) is connected to the first branch path (c), and the main path (A) is connected to the third branch path (e); In the drying mode, the main path (A) is connected to the second branch path (d), and the main path (A) is connected to the fourth branch path (f).

16. A dishwasher, wherein: The dishwasher comprises a main path (A), a bypass path (b), a first branch path (c) and a second branch path (d); the main path (A), the bypass path (b), the first branch path (c) and the second branch path (d) are all used for circulating refrigerant; The dishwasher comprises a compressor (1), a first valve member (2), a first condenser (4) and a second condenser (3); the bypass flow path (b) has a first end (101) and a second end (102); the first end (101) is connected between the compressor (1) and the second condenser (3), and the second end (102) is connected between the first condenser (4) and the second condenser (3); The first valve member (2) can be used to control the main path (A) to communicate with the bypass path (b) or the second branch path (d); The first condenser (4) has a first refrigerant branch (41), the second condenser (3) has a second refrigerant branch (31), the first branch (c) includes the first refrigerant branch (41), the second branch (d) includes the second refrigerant branch (31), and the compressor (1) is arranged on the main circuit (A).

17. The dishwasher according to claim 16, wherein: The first valve member (2) can be used to control the first branch (c) to communicate with the second branch (d) or the bypass flow path (b).

18. The dishwasher according to claim 16 or 17, wherein: The first end (101) has an inlet channel, the second end (102) has an outlet channel, the main path (A) is in communication with the inlet channel or the second branch path (d), and the first branch path (c) and the second branch path (d) are both in communication with the outlet channel; The first refrigerant branch (41) is in communication with the second refrigerant branch (31); The dishwasher has at least two air ducts, and the first condenser (4) and the second condenser (3) are respectively located in different air ducts.

19. The dishwasher according to any one of claims 16 to 18, wherein: The dishwasher includes a washing mode and a drying mode; In the washing mode, the main path (A) is in communication with the bypass path (b), and the main path (A) is in communication with the first refrigerant branch path (41); In the drying mode, the main path (A) is connected to the second branch path (d), and the first refrigerant branch path (41) is connected to the second refrigerant branch path (31).

20. The dishwasher according to claim 19, wherein: In the drying mode, the compressor (1) and the second fan (11) are in operation, the first valve member (2) controls the main circuit (A) to communicate with the second branch circuit (d), the second branch circuit (d) to communicate with the first branch circuit (c), and the first refrigerant branch circuit (41) to communicate with the second refrigerant branch circuit (31).

21. The dishwasher according to any one of claims 16 to 20, wherein: The dishwasher comprises a third branch (e) and a fourth branch (f), and the third branch (e) and the fourth branch (f) are both used for circulating the refrigerant; The dishwasher comprises a first evaporator (9) and a second evaporator (8), the first evaporator (9) having a third refrigerant branch (91), and the second evaporator (8) having a fourth refrigerant branch (81); The third branch (e) includes the third refrigerant branch (91), and the fourth branch (f) includes the fourth refrigerant branch (81).

22. The dishwasher according to claim 21, wherein: The dishwasher comprises a first throttle valve (7) and a second throttle valve (6), wherein the first throttle valve (7) is arranged on the third branch (e), and the second throttle valve (6) is arranged on the fourth branch (f).

23. The dishwasher according to any one of claims 16 to 22, wherein: The dishwasher comprises a first fan (10); The dishwasher comprises a first air duct (100), wherein the first evaporator (9) and the first fan (10) are both located in the first air duct (100); the first fan (10) is located on one side of the first evaporator (9), and the first evaporator (9) is closer to the compressor (1) relative to the first fan (10); and the first air duct (100) is in communication with the external environment.

24. The dishwasher according to claim 23, wherein: The dishwasher comprises a second fan (11), wherein the second fan (11) is located on one side of the second condenser (3); The dishwasher comprises a second air duct (200), the second condenser (3), the second The fan (11) and the second evaporator (8) are both located in the second air duct (200); and the first condenser (4) and the first evaporator (9) are both located outside the second air duct (200).

25. The dishwasher according to any one of claims 16 to 24, wherein: The dishwasher comprises a first main path (g), a first sub-path (h) and a second sub-path (k), wherein the second sub-path (k) is connected to the first main path (g), and the first main path (g), the first sub-path (h) and the second sub-path (k) are all used for circulating washing liquid; The dishwasher comprises a water collection tank (14) and a first pump (15), the water collection tank (14) being used to store washing liquid, one end of the first main channel (g) being connected to the water collection tank (14), the other end of the first main channel (g) being connected to the first sub-channel (h) and the second sub-channel (k), the first pump (15) being arranged in the first main channel (g), and the first pump (15) being used to drive the washing liquid in the water collection tank (14) to flow into the first main channel (g); One end of the first sub-path (h) is connected to the first main path (g), and the other end of the first sub-path (h) is connected to the water collecting tank (14). The first condenser (4) has a first coolant branch (42), and the first sub-path (h) includes the first coolant branch (42).

26. The dishwasher according to claim 25, wherein: The dishwasher comprises a second valve member (16), the second valve member (16) being arranged on the first sub-path (h), and the second valve member (16) being capable of controlling the connection or disconnection between the first main path (g) and the first sub-path (h); Alternatively, the second valve member (16) is connected to the first main channel (g), and the second valve member (16) can be used to control the communication between the first main channel (g) and the first sub-channel (h) or the second sub-channel (k).

27. The dishwasher according to claim 25 or 26, wherein: The dishwasher has a washing cavity (18), the second sub-path (k) has a fourth flow channel, the fourth flow channel is connected to the inner cavity of the washing cavity (18), and the fourth flow channel has an outflow port; The dishwasher comprises a spray device (17), the spray device is arranged on the second sub-path (k), the outflow port is arranged on the spray device (17), and the spray device (17) is located In the inner cavity of the washing cavity (18); The second sub-path (k) comprises a first sub-branch (k1) and a second sub-branch (k2); the spray device (17) comprises a first spray device and a second spray device; the first spray device is arranged on the first sub-branch (k1); the second spray device is arranged on the second sub-branch (k2); and along the direction of gravity, the inner cavity of the washing cavity (18) is at least partially located between the first spray device and the second spray device.

28. The dishwasher according to any one of claims 25 to 27, wherein: The dishwasher comprises a water treatment device (13) and a drainage device (19), and the water treatment device (13) and the drainage device (19) are both connected to the water collection tank (14); The dishwasher comprises a water injection valve (12), the water injection valve (12) is connected to the water treatment device (13), and the water treatment device (13) comprises a breather and a water softener.

29. The dishwasher according to any one of claims 25 to 27, wherein: The dishwasher comprises a filtering device and / or a disinfecting device, wherein the filtering device and / or the disinfecting device are connected between the water collecting tank (14) and the washing cavity (18).

30. The dishwasher according to any one of claims 16 to 29, wherein: The dishwasher comprises a liquid reservoir (5) and a sensor (51); the liquid reservoir (5) is arranged on the first branch (c), and the liquid reservoir (5) can be used to store refrigerant; the sensor (51) is arranged on the main path (A), and the sensor (51) can be used to detect the pressure and / or temperature of the refrigerant.

Images