WO2020052332A1

WO2020052332A1 - Dishwashing machine

Info

Publication number: WO2020052332A1
Application number: PCT/CN2019/094710
Authority: WO
Inventors: 刘超鹏; 刘闪闪; 蔡思琦
Original assignee: 佛山市顺德区美的洗涤电器制造有限公司; 美的集团股份有限公司
Priority date: 2018-09-14
Filing date: 2019-07-04
Publication date: 2020-03-19
Also published as: EP3851016A4; EP3851016A1

Abstract

A dishwashing machine (100), comprising a cavity (101), an evaporator air channel (108), a condenser air channel (109), and a heat pump drying system (107). A spraying arm assembly (60) is disposed within the cavity (101). The evaporator air channel (108) and the condenser air channel (109) are spaced apart. The heat pump drying system (107) comprises a compressor (1072), a first condenser (1071), a second condenser (1075), a throttle device (1074), and an evaporator (1073) that are connected together. The first condenser (1071) performs heat exchange with a washing liquid of the spraying arm assembly (60). The second condenser (1075) is disposed at the condenser air channel (109). The evaporator (1073) is disposed at the evaporator air channel (108). The heat pump drying system (107) is configured to heat, by using the second condenser (1075), air discharged from the cavity (101) via the condenser air channel (109), then return the same to the cavity (101), and to use the evaporator (1073) to cool and remove the moisture from air outside of the cavity (101) via the evaporator air channel (108).

Description

Washing appliances

Priority information

This application claims the priority and rights of the patent applications filed with the State Intellectual Property Office of China on September 14, 2018, with patent application numbers of 201811074701.4 and 201821510972.5, and the entirety of which is incorporated herein by reference.

Technical field

The invention relates to the technical field of household appliances, in particular to a washing appliance.

Background technique

The dishwashers in the related art use the same air duct to achieve the purpose of drying and storage, and the first heat exchange device and the second heat exchange device need to be arranged 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 the temperature is first cooled by the first heat exchange device, and then heated by the second heat exchange device to return to the inner tank. Inside. In addition, during the storage stage, the inner air of the dishwasher needs to be cooled by the first heat exchange device, which causes a reduction in system consumption during the storage process and increases the energy consumption of the dishwasher. In addition, the first heat exchange device and the second heat exchange device are arranged in the same air duct in a serial manner, which results in a lengthy and complicated air duct, a large pressure drop in the air duct, and a problem that the flow ventilation volume is reduced during the drying process.

Summary of the Invention

The invention provides a washing appliance.

A washing appliance according to 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 disposed in the cavity, and the evaporator air duct and the condenser air duct are spaced apart. It is provided that the heat pump drying system includes a connected compressor, a first condenser, a second condenser, a throttling device and an evaporator, and the first condenser is used for heat exchange with the washing liquid of the spray arm assembly, The second condenser is disposed in the condenser air duct, the evaporator is disposed in the evaporator air duct, and the heat pump drying system is configured to exhaust the cavity using the condenser air duct to the cavity. The air is heated by the second condenser and returned to the cavity, and the evaporator is used to cool and dehumidify the outside air of the cavity by using the evaporator air duct.

The above 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 wind flow efficiency and air volume. At the same time, the above-mentioned washing appliance can use hot-air drying with a heat pump to improve the drying effect, and also can achieve a hot-air storage function. When the tableware is taken out, the tableware is in a dry and hot state.

In some embodiments, the evaporator air duct includes a main air duct, a first sub air duct, and a second sub air duct, and the main air duct connects the first sub air duct and the second sub air duct. The evaporator is at least partially disposed in the main air duct, and the heat pump drying system includes a switching device provided in the air duct of the evaporator, the switching device is used to adjust the entry from the main air duct to the air duct; The air flow of the first sub air duct and the second sub air duct.

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 an The first cavity air outlet of the cavity.

In some embodiments, the washing appliance includes a housing, the cavity is disposed in the housing, and the air inlet and the air outlet are located on a side plate or a skirting plate of the housing or the The position where the casing is not blocked by foreign objects.

In some embodiments, the condenser air duct includes a second cavity air outlet and a cavity air inlet provided in the cavity.

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

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

In some embodiments, when the switching device completely closes the airflow from the main air duct to the second sub air duct, the external air cooled and dehumidified by the evaporator passes the first air The sub-air duct leads out of the cavity, and when the switching device completely closes the air flow entering the first sub-air duct from the main air duct, the external air cooled and dehumidified by the evaporator passes through the The second sub-air duct is introduced into the cavity.

In some embodiments, the compressor, the first condenser, the second condenser, the throttling device, and the evaporator are connected in order to form a closed refrigerant circuit.

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, and the other end of the first valve is connected to the first valve An outlet end of two condensers and an 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 The inlet end of the second condenser.

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 an outlet end of the second condenser, and the first throttling device The other end of the 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 evaporator. An inlet end, an inlet end of the first condenser and an inlet end of the second condenser are connected to the compressor.

In some embodiments, the washing appliance includes a washing pump and a water collecting tank, the washing pump is respectively connected to the water collecting tank and the spray arm assembly through a pipeline, and the washing pump is used to connect the water collecting tank to the water collecting tank. The washing liquid is pumped to the spray arm assembly, and the first condenser is used for heat exchange with the washing liquid in the pipeline.

Additional aspects and advantages of the present invention will be given in part in the following description, and part of them will become apparent from the following description, or be learned through the practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

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:

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

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

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

FIG. 4 is another schematic structural diagram of a washing appliance according to an embodiment of the present invention.

Explanation of main component symbols:

Washing appliance 100, cavity 101, water collecting tank 105, heat pump drying system 107, first condenser 1071, compressor 1072, evaporator 1073, throttle device 1074, first throttle device 10741, second throttle device 10742, Second condenser 1075, evaporator air duct 108, condenser air duct 109, cavity air inlet 1091, second fan 1092, second cavity air outlet 1093, cavity exhaust 110, air inlet 1081, first Fan 1082, 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 The valve 31, the washing pump 106, the pipeline 41, the spray arm assembly 60, the first spray arm 102, the second spray arm 103, and the third spray arm 104.

detailed description

Hereinafter, embodiments of the present invention will be described in detail. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, but should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear "," left "," right "," vertical "," horizontal "," top "," bottom "," inside "," outside "," clockwise "," counterclockwise ", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, structure and operation in a specific orientation, Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be interpreted 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 "plurality" is two or more, unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" should be understood in a broad sense unless otherwise specified and limited. For example, they may be fixed connections or removable. Connected, or integrated. 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 between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

1 to 4, a washing appliance 100 according to an 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 disposed in the cavity 101. The evaporator air duct 108 and the condenser air duct 109 are spaced apart. 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, which are connected.

The first condenser 1071 is used for heat exchange with the washing liquid of the spray arm assembly 60. The second condenser 1075 is provided in the condenser air duct 109. The evaporator 1073 is provided 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 condenser air duct 109 to the cavity 101 after being heated by the second condenser 1075, and use the evaporator air duct 108 to Cooling and dehumidifying outside air.

In this way, dividing the evaporator air duct 108 where the evaporator 1073 is located and the condenser air duct 109 where the second condenser 1075 is divided into two independent air ducts can simplify the air duct design and the length of the air flow path and improve the wind flow efficiency. And air volume, at the same time, the washing appliance 100 can achieve hot air drying using a heat pump to improve the drying effect, and also can achieve a hot air storage function. When the tableware is taken out, the tableware is in a dry and hot state.

In some embodiments, the washing appliance 100 includes a washing pump 106 and a water collecting tank 105. The washing pump 106 is connected to the water collecting tank 105 and the spray arm assembly 60 through a pipeline 41, respectively. The washing pump 106 is used for pumping the washing liquid in the water collecting tank 105 to the spray arm assembly 60. The first condenser 1071 is used for heat exchange with the washing liquid in the pipeline 41. In this way, the first condenser 1071 can conduct heat to the washing liquid of the pipeline 41 to heat the washing liquid. The washing liquid may be water or a mixed solution of water and detergent, depending on the washing stage or needs of the washing appliance 100.

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 disposed in the cavity 101 at intervals, and are connected to the pipeline 1071 in a pipeline. 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 water collecting tank 105 to the first condenser 1071 of the heat pump drying system 107, and then supplies the washing liquid to the first spray arm 102, the second spray arm 103, and the third spray arm 104.

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 to better connect the second condenser 1075 and the evaporator 1073 with the wind. The airflow in the tunnel performs heat exchange.

Please refer to FIG. 1 and FIG. 2. In some embodiments, the compressor 1072, the first condenser 1071, the second condenser 1075, the throttling device 1074, and the evaporator 1073 are connected in order to form a closed refrigerant circuit. In this way, the refrigerant as the refrigerant can circulate through the sealed refrigerant circuit including the compressor 1072, the first condenser 1071, the second condenser 1075, the throttle device 1074, and the evaporator 1073.

When the washing appliance 100 is in the stage of heating the washing liquid by the heat pump drying system 107, the compressor 1072 works, and the high-temperature and high-pressure refrigerant is pumped to the first condenser 1071 (the first condenser 1071 can be a water-cooled condenser) After heating, the refrigerant and the washing liquid have completed the heat exchange, flow out of the first condenser 1071, and then flow into the second condenser 1075, and then throttling through the throttling device 1074. The refrigerant that has become low temperature and low pressure flows into the evaporator 1073 and is exchanged with air for heat exchange , And then return to the compressor 1072 to complete the entire heat pump heating cycle.

In some embodiments, the evaporator air duct 108 includes a main air duct 1086 (as shown in FIG. 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 disposed at least partially within the main air duct 1086. The heat pump drying system 107 includes a switching device 1084 provided in the evaporator air duct 108. The switching device 1084 is used to adjust the air flow from the main air duct 1086 into the first sub air duct 1087 and the second sub air duct 1088. In this way, the air flow from the main air duct 1086 into the first sub air duct 1087 and the second sub air duct 1088 can be adjusted by the switching device 1084, so as to achieve the needs of different washing stages of the washing appliance.

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 communicates with the outside atmosphere, and the second sub air duct 1088 communicates with the interior of the cavity 101.

When the switching device 1084 completely closes the airflow entering the second sub air duct 1088 from the main air duct 1086, 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 into the first sub air duct 1087, the external air cooled and dehumidified by the evaporator 1073 is introduced into the cavity 101 through the second sub air duct 1088.

In this way, when it is necessary to dry and dehumidify the high-temperature humidity of 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 communicate with the high-temperature humidity of the cavity 101. Mix to achieve drying. When the tableware of the cavity 101 needs to be stored, the external air cooled and dehumidified by the evaporator 1073 can be led out of the cavity 101 through the first sub air duct 1087 to prevent cold air from entering the cavity 101.

It should be noted that the switching device 1084 may include a baffle plate 10841 and a driving device (not shown) for driving the baffle plate 10841 to rotate. The shutter switching device 1084 can switch between the first state and the second state under the driving of the driving device. When the switching device 1084 is in the first state, the switching device 1084 opens the air outlet 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 air outlet 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 plate 10841 can make a part of the airflow of the main air duct 1086 enter the first sub-air duct 1087 and another part of the air flow enter the second sub-air duct 1088.

When the washing appliance 100 is in the stage of heating the washing liquid by the heat pump drying system 107, the switching device 1084 is in the first state, so that the airflow in the main air duct 1086 and heat exchanged 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, and achieve the purpose of air conditioning cooling.

When the washing appliance 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 thus enters the cavity. Body 101 inside. In this way, the airflow after the temperature reduction and dehumidification can be mixed with the high-temperature and high-pressure air of the cavity 101 to achieve the effect of dehumidifying the air in the cavity 101, thereby improving the drying effect.

In some embodiments, the washing appliance 100 includes a housing (not shown). The cavity 101 is disposed in the casing. The air inlet 1081 and the air outlet 1083 are located at positions where the side plates or skirting boards of the casing or the casing are not blocked by foreign objects. In this way, this facilitates the smooth flow of airflow.

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, and then realize the circulation of the air flow in the cavity 101.

It can be understood that, in order to facilitate the flow of airflow and ensure smooth airflow circulation, 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 can be opened. And the cavity air inlet 1091 is opened on the side wall or the top wall of the cavity 101, or the second cavity air outlet 1093 and the cavity air inlet 1091 are opened on the door body for opening or closing the opening of the cavity 101 ( (Not shown in the figure, it can be an inner door). Of course, it can be understood that the second cavity air outlet 1093 and the cavity air inlet 1091 may also be disposed at other positions of the cavity 101.

With reference to FIG. 1, when the washing appliance 100 is in the storage stage, in order to maintain the temperature of the tableware and prevent the tableware from regaining moisture, the compressor 1072 is started, and the cavity is opposed by the second condenser 1075 (the second condenser 1075 is an air-cooled condenser, for example). The body 101 is heated with air. The baffle of the evaporator air duct 108 may be in a first state to prevent cold air from entering the cavity 101, thereby achieving a low-energy drying or storage function.

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. In this way, the arrangement of the first fan 1082 can increase the gas flow velocity in the evaporator air duct 108, thereby ensuring the drying or storage efficiency of the washing appliance 100.

In some embodiments, a second fan 1092 is disposed in the condenser air duct 109. The second fan 1092 is used to accelerate the gas flow rate in the condenser air duct 109. In this way, the installation of 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 effect.

In the example shown in FIG. 1, 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 air outlet 1083 and closes the first cavity air outlet 1085. Under the action of the first fan 1082, the room-temperature air enters the evaporator air duct 108 from the air inlet 1081, and is expelled from the air outlet 1083. At this time, the second fan 1092 is turned off.

In the example shown in FIG. 2, when the washing appliance 100 is in the drying stage, the washing liquid in the water collecting tank 105 and the first condenser 1071 has been drained. The first fan 1082 and the second fan 1092 are in a working state, and the compressor 1072 is in a 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 components in the water flow system, and then the refrigerant flows into the second condenser 1075 to circulate the air in the cavity 101 Heating, so as to speed up the evaporation and drying of the water droplets on the tableware in the cavity 101 and raise the temperature of the tableware itself.

Then, the refrigerant condensed by the second condenser 1075 is throttled by the throttling device 1074 and then flows into the evaporator 1073. Room temperature air flows in from the air inlet 1081 under the action of the first fan 1082, cools and dehumidifies through the evaporator 1073, and then enters the cavity from the first cavity air outlet 1085 with low temperature and low humidity, and enters the cavity 101 with high temperature and high humidity. Air mixing or squeezing high-temperature and high-humidity air from the cavity exhaust port 110 (at this time the switching device 1084 baffle is in the second state), to achieve the effect of dehumidifying the air in the cavity 101, thereby improving the drying efficiency, Reduce drying time. In the illustrated embodiment, the cavity exhaust port 110 can be opened on the top of the cavity 101 and can be sealed by a movable seal. When the internal pressure of the cavity 101 is greater than a preset pressure, the seal is The top opening opens the cavity exhaust port 110. When the internal pressure of the cavity 101 is not greater than a preset pressure, the seal reseals the cavity exhaust port 110 to achieve the seal of the cavity 101.

It can be understood that, in order to facilitate the flow of airflow, 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 for opening or Close the door of the cavity 101 (not shown in the figure, it may be an inner door). Of course, it can be understood that the first cavity air outlet 1085 can also be disposed at other positions of the cavity 101.

With reference to FIG. 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 end of the first condenser 1071. The other end of the first valve 30 is connected to the outlet end of the second condenser 1075 and the inlet end of the throttle 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.

In this way, 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 then the second condenser 1075 is bypassed, so that the refrigerant does not need to pass through the second condenser 1075, thereby reducing heat loss. And can reduce the flow resistance of the 107 pipeline of the heat pump drying system, and reduce the energy consumption of the heat pump system when heating the washing liquid as a whole. When the washing appliance 100 is in the drying phase or the storage phase, the second valve 31 is opened, the first valve 30 is closed, and the first condenser 1071 is bypassed. This way, the refrigerant does not need to pass through the first condenser 1071, which reduces heat loss, and The flow resistance of the heat pump drying system 107 pipeline is reduced, and the energy consumption of the heat pump drying system 107 during the drying and storage stages is reduced as a whole.

With reference to FIG. 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 throttle device 10741 is connected to the outlet end of the second condenser 1075. The other end of the first throttle device 10741 is connected to the inlet end of the evaporator 1073. One end of the second throttle 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 of the evaporator 1073, and the inlet of the first condenser 1071 and the inlet of the second condenser 1075 are connected to the compressor 1072.

In this way, the first throttle device 10741 and the second throttle device 1072 constitute a dual-throttle device system. During the heating phase of the washing liquid of the washing appliance 100, the second throttling device 10742 enters a normal working state, and the first throttling device 10741 is shut down or the opening degree is at a minimum state, thereby bypassing the second condenser 1075 and reducing heat pump drying. The flow resistance of the system 107 pipeline reduces 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, the second throttling device 10742 is shut down or the opening degree is at a minimum state, the first condenser 1071 is bypassed, and the heat pump system pipeline is reduced. Flow resistance reduces heat pump system energy consumption during the drying and storage phases.

It should be noted that the throttling device 1074 includes an expansion valve, and the low-temperature and high-pressure liquid refrigerant formed after being condensed by the second condenser 1075 passes through the throttling orifice of the expansion valve to become a low-temperature and low-pressure misty hydraulic refrigerant. The evaporation of the refrigerant creates the conditions. Of course, the throttling device 1074 may also be other types, such as a capillary tube, which is not specifically limited. In addition, the first expansion device 10741 and the second expansion device 10742 may also employ electronic expansion valves.

In the present invention, unless specifically stated and defined otherwise, the "first" or "down" of the second feature may include the first and second features in direct contact, and may also include the first and second features. Not directly, but through another characteristic contact between them. Moreover, the first feature is "above", "above", and "above" the second feature, including that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is higher in level than the second feature. The first feature is “below”, “below”, and “below” of the second feature, including the fact that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is less horizontal than the second feature.

The disclosure herein provides many different implementations or examples for implementing different structures of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described herein. Of course, they are merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

In the description of this specification, the description with reference to the terms “one embodiment”, “some embodiments”, “exemplary embodiments”, “examples”, “specific examples”, or “some examples”, etc., means that the embodiments are combined The specific features, structures, materials, or characteristics described by the examples are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same implementation or example. Moreover, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more implementations or examples.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present invention, The scope of the invention is defined by the claims and their equivalents.

Claims

A washing appliance, comprising:

A cavity, wherein a spray arm assembly is arranged in the cavity;

An evaporator air duct and a condenser air duct, the evaporator air duct and the condenser air duct are arranged at intervals;

Heat pump drying system, 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, and the second condenser is provided at The condenser air duct, the evaporator is disposed in the evaporator air duct, and the heat pump drying system is configured to use the condenser air duct to exhaust air discharged to the cavity from the second condensing The heater returns to the cavity after being heated, and uses the evaporator air duct to cool and dehumidify the outside air of the cavity by the evaporator.
The washing appliance according to claim 1, wherein the evaporator air duct comprises a main air duct, a first sub air duct, and a second sub air duct, and the main air duct is connected to the first sub air duct And the second sub air 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 The air flow rate of the main air duct entering the first sub air duct and the second sub air duct.
The washing appliance according to claim 2, wherein 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 first The second air duct includes a first cavity air outlet provided in the cavity.
The washing appliance according to claim 3, wherein the washing appliance comprises a housing, the cavity is disposed in the housing, and the air inlet and the air outlet are located in the housing. A position where the side plate or skirting board or the casing is not blocked by a foreign object.
The washing appliance according to claim 1, wherein the condenser air duct comprises a second cavity air outlet and a cavity air inlet provided in the cavity.
The washing appliance according to claim 2, wherein a first fan is disposed in the main air duct, and the first fan is used for accelerating the flow velocity of the gas in the evaporator air duct.
The washing appliance according to claim 1, wherein a second fan is disposed in the condenser air duct, and the second fan is used to accelerate a gas flow rate in the condenser air duct.
The washing appliance according to claim 2, wherein when the switching device completely closes the airflow entering the second sub-air duct from the main air duct, the evaporator is cooled and dehumidified by the evaporator. External air is led out of the cavity through the first sub-air duct,

When the switching device completely shuts off the airflow entering the first sub air duct from the main air duct, the external air cooled and dehumidified by the evaporator is introduced into the cavity through the second sub air duct. Body.
The washing appliance according to claim 1, wherein the compressor, the first condenser, the second condenser, the throttling device, and the evaporator are connected in order to form a closed refrigerant circuit .
The washing appliance according to claim 1, wherein the washing appliance comprises a first valve and a second valve, one end of the first valve is connected to the outlet end of the first condenser, and the first valve The other end is connected to the outlet end of the second condenser and the inlet end of the throttling device, and one end of the second valve is connected to the inlet end of the first condenser and the compressor, and the second The other end of the valve is connected to the inlet end of the second condenser.
The washing appliance according to claim 1, wherein the throttling device comprises a first throttling device and a second throttling device, and one end of the first throttling device is connected to an outlet of the second condenser. End, 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 of the second throttling device is One end 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.
The washing appliance according to claim 1, wherein the washing appliance comprises a washing pump and a water collecting tank, and the washing pump is respectively connected to the water collecting tank and the spray arm assembly through a pipeline, and the washing pump is used for The first condenser is used for exchanging heat with the washing liquid in the pipeline for pumping the washing liquid in the water collecting tank to the spray arm assembly.