Washing appliances

Abstract

The present invention discloses a washing appliance, which comprises a cavity, an evaporator air duct, a condenser air duct, and a heat pump drying system. A spray arm assembly is arranged in the cavity, the evaporator air duct and the condenser air duct are arranged at intervals, the heat pump drying system comprises a connected compressor, a first condenser, a second condenser, a throttling device and an evaporator, the first condenser is used for heat exchange with the washing liquid of the spray arm assembly, the second condenser is arranged in the condenser air duct, the evaporator is arranged in the evaporator air duct, the heat pump drying system is configured to heat the air discharged from the cavity by the condenser air duct and return it to the cavity, and to cool and dehumidify the external air of the cavity by the evaporator by the evaporator by the evaporator air duct. The air duct design and the length of the wind flow path can be simplified, and the wind flow efficiency and air volume can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, in particular to a washing appliance. Background Art

[0002] The dishwasher in the related art uses the same air duct to achieve the purpose of drying and storage, and it is necessary to set the first heat exchange device and the second heat exchange device in series in the air duct. In this way, when the dishwasher enters the drying stage, the moisture in the inner tank of the dishwasher is drawn into the air duct, and first cooled by the first heat exchange device, and then heated by the second heat exchange device to flow back into the inner tank. In addition, during the storage stage, the air in the inner tank of the dishwasher needs to be cooled by the first heat exchange device, resulting in a reduction in system power consumption during the storage process, which increases the energy consumption of the dishwasher. In addition, the first heat exchange device and the second heat exchange device are set in series in the same air duct, which makes the air duct relatively long and complicated, the air duct pressure drop is large, and the problem of reduced air flow volume is prone to occur during the drying process. Summary of the invention

[0003] The invention provides a washing appliance.

[0004] The washing appliance of an embodiment of the present invention includes a cavity, an evaporator air duct, a condenser air duct, and a heat pump drying system. A spray arm assembly is arranged in the cavity. The evaporator air duct and the condenser air duct are arranged at intervals. The heat pump drying system includes a connected compressor, a first condenser, a second condenser, a throttling device and an evaporator. The first condenser is used for heat exchange with the washing liquid of the spray arm assembly. The second condenser is arranged in the condenser air duct, and the evaporator is arranged in the evaporator air duct. The heat pump drying system is configured to heat the air discharged from the cavity using the condenser air duct and return it to the cavity after being heated by the second condenser, and to cool and dehumidify the external air of the cavity by the evaporator using the evaporator air duct.

[0005] The above-mentioned washing appliance divides the evaporator air duct where the evaporator is located and the condenser air duct where the second condenser is located into two independent air ducts, which can simplify the air duct design and the length of the air flow path, and improve the air flow efficiency and air volume. At the same time, the above-mentioned washing appliance can utilize heat pump hot air drying to improve the drying effect, and can also realize the hot air storage function, so that the tableware is in a dry and hot state when the tableware is taken out.

[0006] In certain embodiments, the evaporator air duct includes a main air duct, a first sub-duct and a second sub-duct, the main air duct connects the first sub-duct and the second sub-duct, the evaporator is at least partially disposed in the main air duct, and the heat pump drying system includes a switching device disposed in the evaporator air duct, the switching device is used to adjust the amount of airflow entering the first sub-duct and the second sub-duct from the main air duct.

[0007] In some embodiments, the main air duct includes an air inlet located outside the cavity, the first sub-air duct includes an air outlet located outside the cavity, and the second sub-air duct includes a first cavity air outlet arranged in the cavity.

[0008] In some embodiments, the washing appliance includes a shell, the cavity is arranged in the shell, and the air inlet and the air outlet are located on a side panel or a skirting board of the shell or a position of the shell that is not blocked by external objects.

[0009] In some embodiments, the condenser air duct includes a second cavity air outlet and a cavity air inlet disposed in the cavity.

[0010] In some embodiments, a first fan is disposed in the main air duct, and the first fan is used to accelerate the gas flow rate in the evaporator air duct.

[0011] In some embodiments, a second fan is disposed in the condenser air duct, and the second fan is used to accelerate the gas flow rate in the condenser air duct.

[0012] In some embodiments, when the switching device completely closes the airflow from the main air duct into the second sub-duct, the external air after cooling and dehumidification by the evaporator is discharged out of the cavity through the first sub-duct; when the switching device completely closes the airflow from the main air duct into the first sub-duct, the external air after cooling and dehumidification by the evaporator is introduced into the cavity through the second sub-duct.

[0013] In certain embodiments, the compressor, the first condenser, the second condenser, the throttling device, and the evaporator are sequentially connected to form a closed refrigerant circuit.

[0014] In some embodiments, the washing appliance includes a first valve and a second valve, one end of the first valve is connected to the outlet end of the first condenser, the other end of the first valve is connected to the outlet end of the second condenser and the inlet end of the throttling device, one end of the second valve is connected to the inlet end of the first condenser and the compressor, and the other end of the second valve is connected to the inlet end of the second condenser.

[0015] In some embodiments, the throttling device includes a first throttling device and a second throttling device, one end of the first throttling device is connected to the outlet end of the second condenser, and the other end of the first throttling device is connected to the inlet end of the evaporator, one end of the second throttling device is connected to the outlet end of the first condenser, and the other end of the second throttling device is connected to the inlet end of the evaporator, and the inlet end of the first condenser and the inlet end of the second condenser are connected to the compressor.

[0016] In some embodiments, the washing appliance includes a washing pump and a water collection tank, the washing pump is respectively connected to the water collection tank and the spray arm assembly through pipelines, the washing pump is used to pump the washing liquid in the water collection tank to the spray arm assembly, and the first condenser is used to perform heat exchange with the washing liquid in the pipeline.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic structural diagram of a washing appliance according to an embodiment of the present invention;

[0020] Figure 2 is another structural schematic diagram of a washing appliance according to an embodiment of the present invention;

[0021] Figure 3 is another structural schematic diagram of a washing appliance according to an embodiment of the present invention;

[0022] Figure 4 It is another structural schematic diagram of the washing appliance according to the embodiment of the present invention.

[0023] Description of main component symbols:

[0024] Washing appliance 100, cavity 101, water collection tank 105, heat pump drying system 107, first condenser 1071, compressor 1072, evaporator 1073, throttling device 1074, first throttling device 10741, second throttling device 10742, second condenser 1075, evaporator air duct 108, condenser air duct 109, cavity air inlet 1091, second fan 1092, second cavity air outlet 109 3. Cavity exhaust port 110, air inlet 1081, first fan 1082, air exhaust port 1083, switching device 1084, baffle 10841, first cavity air outlet 1085, main air duct 1086, first sub-air duct 1087, second sub-air duct 1088, first valve 30, second valve 31, washing pump 106, pipeline 41, spray arm assembly 60, first spray arm 102, second spray arm 103, third spray arm 104. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figures 1 to 4 The washing appliance 100 of the embodiment of the present invention includes a cavity 101, an evaporator air duct 108, a condenser air duct 109 and a heat pump drying system 107. A spray arm assembly 60 is arranged in the cavity 101. The evaporator air duct 108 and the condenser air duct 109 are arranged at intervals. The heat pump drying system 107 includes a first condenser 1071, a compressor 1072, a second condenser 1075, a throttling device 1074 and an evaporator 1073 connected.

[0029] The first condenser 1071 is used to perform heat exchange with the washing liquid of the spray arm assembly 60. The second condenser 1075 is arranged in the condenser air duct 109. The evaporator 1073 is arranged in the evaporator air duct 108. The heat pump drying system 107 is configured to heat the air discharged from the cavity 101 by the second condenser 1075 using the condenser air duct 109 and return it to the cavity 101, and to cool and dehumidify the external air of the cavity 101 by the evaporator 1073 using the evaporator air duct 108.

[0030] In this way, the evaporator air duct 108 where the evaporator 1073 is located and the condenser air duct 109 where the second condenser 1075 is located are divided into two independent air ducts, which can simplify the air duct design and the length of the air flow path, and improve the air flow efficiency and air volume. At the same time, the above-mentioned washing appliance 100 can utilize heat pump hot air drying to improve the drying effect, and can also realize the hot air storage function, so that the tableware is in a dry and hot state when the tableware is taken out.

[0031] In some embodiments, the washing appliance 100 includes a washing pump 106 and a sump 105. The washing pump 106 is connected to the sump 105 and the spray arm assembly 60 through a pipeline 41. The washing pump 106 is used to pump the washing liquid in the sump 105 to the spray arm assembly 60. The first condenser 1071 is used to perform heat exchange with the washing liquid in the pipeline 41. In this way, the first condenser 1071 can transfer heat to the washing liquid in the pipeline 41 to heat the washing liquid. The washing liquid can be water or a mixture of water and detergent, depending on the washing stage or demand of the washing appliance 100.

[0032] In this embodiment, the spray arm assembly 60 includes a first spray arm 102, a second spray arm 103 and a third spray arm 104. The first spray arm 102, the second spray arm 103 and the third spray arm 104 are arranged in the cavity 101 at intervals and connected by pipelines 1071. The first spray arm 102 is located above the second spray arm 103, and the second spray arm 103 is located above the third spray arm 104. The washing pump 106 pumps the washing liquid from the sump 105 to the first condenser 1071 of the heat pump drying system 107 for heating, and then supplies it to the first spray arm 102, the second spray arm 103 and the third spray arm 104.

[0033] The second condenser 1075 may be at least partially disposed in the condenser air duct 109, and the evaporator 1073 may be at least partially disposed in the evaporator air duct 108, so that the second condenser 1075 and the evaporator 1073 can better exchange heat with the airflow in the air duct.

[0034] Please combine Figure 1 and Figure 2 In some embodiments, the compressor 1072, the first condenser 1071, the second condenser 1075, the throttling device 1074 and the evaporator 1073 are sequentially connected to form a closed refrigerant circuit. In this way, the refrigerant as a refrigerant can circulate in the sealed refrigerant circuit formed by the compressor 1072, the first condenser 1071, the second condenser 1075, the throttling device 1074 and the evaporator 1073.

[0035] When the washing appliance 100 is in the stage where the heat pump drying system 107 heats the washing liquid, the compressor 1072 works to pump the high-temperature and high-pressure refrigerant to the first condenser 1071 (the first condenser 1071 can be a water-cooled condenser) to heat the washing liquid. After the refrigerant and the washing liquid complete the heat exchange, they flow out of the first condenser 1071 and flow into the second condenser 1075. Then, after being throttled by the throttling device 1074, they become low-temperature and low-pressure refrigerant and flow into the evaporator 1073 to exchange heat with the air for evaporation, and then return to the compressor 1072 to complete the entire heat pump heating cycle.

[0036] In some embodiments, the evaporator air duct 108 includes a main air duct 1086 (eg, Figure 1), a first sub-air duct 1087 and a second sub-air duct 1088. The main air duct 1086 connects the first sub-air duct 1087 and the second sub-air duct 1088. The evaporator 1073 is at least partially disposed in the main air duct 1086. The heat pump drying system 107 includes a switching device 1084 disposed in the evaporator air duct 108. The switching device 1084 is used to adjust the amount of air entering the first sub-air duct 1087 and the second sub-air duct 1088 from the main air duct 1086. In this way, the amount of air entering the first sub-air duct 1087 and the second sub-air duct 1088 from the main air duct 1086 can be adjusted by the switching device 1084 to meet the needs of different washing stages of the washing appliance.

[0037] Specifically, the main air duct 1086 includes an air inlet 1081 located outside the cavity 101. The first sub-air duct 1087 includes an air outlet 1083 located outside the cavity 101. The second sub-air duct 1088 includes a first cavity air outlet 1085 disposed in the cavity 101. In this way, the first sub-air duct 1087 is connected to the outside atmosphere, and the second sub-air duct 1088 is connected to the inside of the cavity 101.

[0038] When the switching device 1084 completely closes the airflow from the main air duct 1086 to the second sub-air duct 1088, the external air cooled and dehumidified by the evaporator 1073 is led out of the cavity 101 through the first sub-air duct 1087. When the switching device 1084 completely closes the airflow from the main air duct 1086 to the first sub-air duct 1087, the external air cooled and dehumidified by the evaporator 1073 is led into the cavity 101 through the second sub-air duct 1088.

[0039] Thus, when it is necessary to dry and dehumidify the high temperature and humidity in the cavity 101, the external air cooled and dehumidified by the evaporator 1073 can be introduced into the cavity 101 through the second sub-air duct 1088 to mix with the high temperature and humidity in the cavity 101 to achieve drying. When it is necessary to store the tableware in the cavity 101, the external air cooled and dehumidified by the evaporator 1073 can be guided out of the cavity 101 through the first sub-air duct 1087 to prevent cold air from entering the cavity 101.

[0040] It should be noted that the switching device 1084 may include a baffle 10841 and a driving device (not shown) for driving the baffle 10841 to rotate. The baffle switching device 1084 can be switched between a first state and a second state under the drive of the driving device. When the switching device 1084 is in the first state, the switching device 1084 opens the exhaust port 1083 and closes the first cavity air outlet 1085. When the switching device 1084 is in the second state, the switching device 1084 closes the exhaust port 1083 and opens the first cavity air outlet 1085. In addition, in order to meet the needs of more washing appliances, the position of the baffle 10841 can make a part of the airflow of the main air duct 1086 enter the first sub-air duct 1087, and the other part of the airflow enters the second sub-air duct 1088.

[0041] When the washing appliance 100 is in the stage where the heat pump drying system 107 heats the washing liquid, the switching device 1084 is in the first state, so that the airflow in the main air duct 1086 after heat exchange with the evaporator 1073 enters the first sub-air duct 1087 and is discharged. In this way, if the gas discharged from the first sub-air duct 1087 is discharged into the room, the gas discharged from the first sub-air duct 1087 can also play a role in cooling the room, thereby achieving the purpose of air conditioning cooling.

[0042] When the washing machine 100 is in the drying stage of the dishwasher, the baffle of the switching device 1084 is in the second state, so that the airflow in the main air duct 1086 after heat exchange with the evaporator 1073 enters the second sub-air duct 1088 and then enters the cavity 101. In this way, the airflow after cooling and dehumidification can be mixed with the high-temperature and high-pressure air in the cavity 101 to achieve the effect of dehumidifying the air in the cavity 101, thereby improving the drying effect.

[0043] In some embodiments, the washing appliance 100 includes a housing (not shown). The cavity 101 is disposed in the housing. The air inlet 1081 and the air outlet 1083 are located at a side plate or a baseboard of the housing or a position where the housing is not blocked by foreign objects. In this way, the air flow is facilitated to flow smoothly.

[0044] In some embodiments, the condenser air duct 109 includes a second cavity air outlet 1093 and a cavity air inlet 1091 disposed in the cavity 101. In this way, the condenser air duct 109 can communicate with the interior of the cavity 101 through the second cavity air outlet 1093 and the cavity air inlet 1091, thereby realizing the circulation of airflow in the cavity 101.

[0045] It can be understood that in order to facilitate the flow of air and ensure smooth circulation of air, the second cavity air outlet 1093 and the cavity air inlet 1091 can be opened on the same side of the cavity 101, for example, the second cavity air outlet 1093 and the cavity air inlet 1091 can be opened on the side wall or top wall of the cavity 101, or the second cavity air outlet 1093 and the cavity air inlet 1091 can be opened on the door body (not shown in the figure, which can be an inner door) used to open or close the opening of the cavity 101. Of course, it can be understood that the second cavity air outlet 1093 and the cavity air inlet 1091 can also be set at other positions of the cavity 101.

[0046] Please combine Figure 1 When the washing machine 100 is in the storage stage, in order to maintain the temperature of the dishes and prevent them from getting damp, the compressor 1072 is started, and the air in the cavity 101 is heated through the second condenser 1075 (the second condenser 1075 is, for example, an air-cooled condenser). The baffle of the evaporator air duct 108 can be in the first state to prevent cold air from entering the cavity 101, thereby achieving a low-energy drying or storage function.

[0047] In some embodiments, a first fan 1082 is disposed in the main air duct 1086. The first fan 1082 is used to accelerate the gas flow rate in the evaporator air duct 108. Thus, the first fan 1082 can increase the gas flow rate in the evaporator air duct 108, thereby ensuring the drying or storage effect of the washing appliance 100.

[0048] In some embodiments, a second fan 1092 is provided in the condenser air duct 109. The second fan 1092 is used to accelerate the gas flow rate in the condenser air duct 109. Thus, the second fan 1092 can increase the speed at which the air in the cavity 101 flows in the condenser air duct 109, thereby enhancing the storage and drying effects.

[0049] exist Figure 1 In the example shown, when the washing appliance 100 is in the washing liquid heating stage, the first fan 1082 is started. When the baffle of the switching device 1084 is in the first state, the switching device 1084 opens the exhaust port 1083 and closes the first cavity air outlet 1085. Under the action of the first fan 1082, room temperature air enters the evaporator air duct 108 from the air inlet 1081 and is accelerated to be discharged from the exhaust port 1083. At this time, the second fan 1092 is in the closed state.

[0050] exist Figure 2In the example shown, when the washing appliance 100 is in the drying stage, the washing liquid in the water collection tank 105 and the first condenser 1071 has been drained. The first fan 1082 and the second fan 1092 are in working state, and the compressor 1072 is in the starting state. The compressor 1072 pumps the high-temperature and high-pressure refrigerant to the first condenser 1071 to dry the first condenser 1071 and other internal components of the water flow system, and then the refrigerant flows into the second condenser 1075 to circulate and heat the air in the cavity 101, thereby accelerating the evaporation and drying of water droplets on the tableware in the cavity 101 and raising the temperature of the tableware itself.

[0051] Furthermore, the refrigerant condensed by the second condenser 1075 is throttled by the throttling device 1074 and then flows into the evaporator 1073. The room temperature air flows in from the air inlet 1081 under the action of the first fan 1082, passes through the evaporator 1073 for cooling and dehumidification, and then enters the cavity from the low-temperature and low-humidity first cavity air outlet 1085, and mixes with the high-temperature and high-humidity air in the cavity 101 or squeezes the high-temperature and high-humidity air out of the cavity exhaust port 110 (at this time, the baffle of the switching device 1084 is in the second state), achieving the effect of dehumidifying the air in the cavity 101, thereby improving the drying efficiency and shortening the drying time. In the illustrated embodiment, the cavity exhaust port 110 may be opened at the top of the cavity 101 and may be sealed by a movable seal. When the internal pressure of the cavity 101 is greater than a preset pressure, the seal will be pushed open to open the cavity exhaust port 110. When the internal pressure of the cavity 101 is not greater than the preset pressure, the seal will reseal the cavity exhaust port 110 to seal the cavity 101.

[0052] It can be understood that, in order to facilitate the flow of air, the first cavity air outlet 1085 can be opened on the side wall of the cavity 101 or the top wall of the cavity 101, or the first cavity air outlet 1085 can be opened on a door body (not shown in the figure, which can be an inner door) used to open or close the cavity 101. Of course, it can be understood that the first cavity air outlet 1085 can also be set at other positions of the cavity 101.

[0053] Please combine Figure 3 In some embodiments, the washing appliance 100 includes a first valve 30 and a second valve 31. One end of the first valve 30 is connected to the outlet of the first condenser 1071. The other end of the first valve 30 is connected to the outlet of the second condenser 1075 and the inlet of the throttling device 1074. One end of the second valve 31 is connected to the inlet of the first condenser 1071 and the compressor 1072, and the other end of the second valve 31 is connected to the inlet of the second condenser 1075.

[0054] Thus, when the washing liquid of the washing appliance 100 is in the heating stage, the first valve 30 is opened, the second valve 31 is closed, and the second condenser 1075 is bypassed, so that the refrigerant does not need to pass through the second condenser 1075, reducing heat loss, and reducing the flow resistance of the pipeline of the heat pump drying system 107, and reducing the energy consumption of the heat pump system when heating the washing liquid. When the washing appliance 100 is in the drying stage or the storage stage, the second valve 31 is opened, the first valve 30 is closed, and the first condenser 1071 is bypassed, so that the refrigerant does not need to pass through the first condenser 1071, reducing heat loss, and reducing the flow resistance of the pipeline of the heat pump drying system 107, and reducing the energy consumption of the heat pump drying system 107 during the drying and storage stages.

[0055] Please combine Figure 4 In some embodiments, the throttling device 1074 includes a first throttling device 10741 and a second throttling device 10742. One end of the first throttling device 10741 is connected to the outlet end of the second condenser 1075. The other end of the first throttling device 10741 is connected to the inlet end of the evaporator 1073. One end of the second throttling device 10742 is connected to the outlet end of the first condenser 1071. The other end of the second throttling device 10742 is connected to the inlet end of the evaporator 1073, and the inlet end of the first condenser 1071 and the inlet end of the second condenser 1075 are connected to the compressor 1072.

[0056] In this way, the first throttling device 10741 and the second throttling device 1072 form a dual throttling device system. When the washing liquid of the washing appliance 100 is heated, the second throttling device 10742 enters a normal working state, and the first throttling device 10741 is closed or the opening is at the minimum state, thereby bypassing the second condenser 1075, reducing the flow resistance of the heat pump drying system 107 pipeline, and reducing the energy consumption of the heat pump drying system 107 when heating the washing water. When the washing appliance 100 is in the drying or storage stage, the first throttling device 10741 enters a normal working state, and the second throttling device 10742 is closed or the opening is at the minimum state, bypassing the first condenser 1071, reducing the flow resistance of the heat pump system pipeline, and reducing the energy consumption of the heat pump system during the drying and storage stages.

[0057] It should be noted that the throttling device 1074 includes an expansion valve. The low-temperature and high-pressure liquid refrigerant formed after condensation by the second condenser 1075 becomes a low-temperature and low-pressure mist-like hydraulic refrigerant after throttling through the throttling hole of the expansion valve, creating conditions for the evaporation of the refrigerant. Of course, the throttling device 1074 can also be other types, such as a capillary tube, etc., which are not specifically limited. In addition, the first throttling device 10741 and the second throttling device 10742 can also use electronic expansion valves.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0059] The disclosure herein provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described herein. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art may appreciate the application of other processes and / or the use of other materials.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A washing appliance, characterized in that: include: A cavity, wherein a spray arm assembly is disposed in the cavity; An evaporator air duct and a condenser air duct, wherein the evaporator air duct and the condenser air duct are arranged at intervals; A heat pump drying system, the heat pump drying system comprising: A compressor, a first condenser, a second condenser, a throttling device and an evaporator connected to each other, the first condenser is used to perform heat exchange with the washing liquid of the spray arm assembly, the second condenser is arranged in the condenser air duct, the evaporator is arranged in the evaporator air duct, the heat pump drying system is configured to heat the air discharged from the cavity by the second condenser and return it to the cavity, and to cool and dehumidify the external air of the cavity by the evaporator by the evaporator air duct; The evaporator air duct where the evaporator is located and the condenser air duct where the second condenser is located are divided into two independent air ducts; The evaporator air duct includes a main air duct, a first sub-air duct and a second sub-air duct, the main air duct connects the first sub-air duct and the second sub-air duct, the evaporator is at least partially arranged in the main air duct, the main air duct includes an air inlet located outside the cavity, the first sub-air duct includes an air outlet located outside the cavity, and the second sub-air duct includes a first cavity air outlet arranged in the cavity.

2. The washing appliance according to claim 1, characterized in that: The heat pump drying system includes a switching device disposed in the evaporator air duct, and the switching device is used to adjust the amount of airflow from the main air duct into the first sub-air duct and the second sub-air duct.

3. The washing appliance according to claim 1, characterized in that: The washing appliance comprises a shell, the cavity is arranged in the shell, and the air inlet and the air outlet are located on a side plate or a skirting board of the shell or at a position where the shell is not blocked by external objects.

4. The washing appliance according to claim 1, characterized in that: The condenser air duct includes a second cavity air outlet and a cavity air inlet arranged in the cavity.

5. The washing appliance according to claim 2, characterized in that: A first fan is arranged in the main air duct, and the first fan is used to accelerate the gas flow rate in the evaporator air duct.

6. The washing appliance according to claim 1, characterized in that: A second fan is arranged in the condenser air duct, and the second fan is used to accelerate the gas flow rate in the condenser air duct.

7. The washing appliance according to claim 2, characterized in that: When the switching device completely closes the airflow from the main air duct into the second sub-air duct, the external air cooled and dehumidified by the evaporator is led out of the cavity through the first sub-air duct. When the switching device completely closes the airflow from the main air duct into the first sub-air duct, the external air cooled and dehumidified by the evaporator is introduced into the cavity through the second sub-air duct.

8. The washing appliance according to claim 1, characterized in that: The compressor, the first condenser, the second condenser, the throttling device and the evaporator are connected in sequence to form a closed refrigerant circuit.

9. The washing appliance according to claim 1, characterized in that: The washing appliance includes a first valve and a second valve, one end of the first valve is connected to the outlet end of the first condenser, the other end of the first valve is connected to the outlet end of the second condenser and the inlet end of the throttling device, one end of the second valve is connected to the inlet end of the first condenser and the compressor, and the other end of the second valve is connected to the inlet end of the second condenser.

10. The washing appliance according to claim 1, characterized in that: The throttling device includes a first throttling device and a second throttling device, one end of the first throttling device is connected to the outlet end of the second condenser, and the other end of the first throttling device is connected to the inlet end of the evaporator, one end of the second throttling device is connected to the outlet end of the first condenser, and the other end of the second throttling device is connected to the inlet end of the evaporator, and the inlet end of the first condenser and the inlet end of the second condenser are connected to the compressor.

11. The washing appliance according to claim 1, characterized in that: The washing appliance includes a washing pump and a water collection tank. The washing pump is connected to the water collection tank and the spray arm assembly through pipelines. The washing pump is used to pump the washing liquid in the water collection tank to the spray arm assembly. The first condenser is used to perform heat exchange with the washing liquid in the pipeline.

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