Heat pump drying assembly and washing electric appliance

Abstract

The utility model discloses a heat pump drying assembly and a washing electric appliance, the heat pump drying assembly comprises an air duct part and a heat pump drying system, the air duct part comprises a heat exchange shell, the heat exchange shell is configured to communicate with an inner container of the washing electric appliance, and a ventilation duct is formed in the heat exchange shell; the heat pump drying system comprises a compressor, a condenser, a throttling device and an evaporator which form a closed refrigerant loop, the evaporator and the condenser are arranged in the heat exchange shell in a spaced mode, the evaporator is used for cooling airflow flowing out of the inner container, the condenser is used for heating airflow flowing into the inner container, and the condenser is used for heating the airflow flowing into the inner container. The projection area of the evaporator in the direction perpendicular to the flow guide direction of the ventilating duct is smaller than that of the condenser in the direction perpendicular to the flow guide direction of the ventilating duct. In this way, one part of airflow flows through the evaporator to be cooled and then flows to the condenser, the other part of airflow directly flows to the condenser, energy absorbed by refrigerant of the evaporator and generation of condensate water are reduced, and the energy efficiency of the heat pump drying system is improved.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to a heat pump drying assembly and a washing appliance. Background Technology

[0002] In related technologies, washing appliances include an inner tank and a heat pump drying system, and these appliances have a drying mode for drying dishes. However, the drying effect of the heat pump drying system during the drying process in these washing appliances needs further improvement. Utility Model Content

[0003] This application provides a heat pump drying component and a washing appliance, which at least solves the technical problem of poor drying effect of the heat pump drying system in the washing appliance.

[0004] This application provides a heat pump drying assembly for use in washing appliances, the heat pump drying assembly comprising:

[0005] A duct component, the duct component including a heat exchange housing configured to communicate with the inner tank of the washing appliance, the heat exchange housing forming a ventilation duct; and

[0006] A heat pump drying system includes a compressor, a condenser, a throttling device, and an evaporator that form a closed refrigerant circuit. The evaporator and the condenser are spaced apart in the heat exchange shell. The evaporator is used to cool the airflow flowing out of the inner liner, and the condenser is used to heat the airflow flowing into the inner liner.

[0007] Wherein, the projected area of ​​the evaporator perpendicular to the airflow direction of the ventilation duct is smaller than the projected area of ​​the condenser perpendicular to the airflow direction of the ventilation duct.

[0008] In the heat pump drying assembly of this application embodiment, the projected area of ​​the evaporator perpendicular to the airflow direction is smaller than the projected area of ​​the condenser perpendicular to the airflow direction. This allows part of the airflow to first flow through the evaporator to cool down before flowing to the condenser, while the other part of the airflow flows directly to the condenser. This reduces the energy absorbed by the refrigerant in the evaporator, which helps to reduce the generation of condensate. At the same time, it lowers the operating temperature difference of the compressor, thereby reducing the workload of the compressor and improving the energy efficiency of the heat pump drying system, thus improving the drying effect of the heat pump drying system.

[0009] In some embodiments, the heat pump drying assembly includes a flow-blocking component connected to the evaporator, and the flow-blocking component and the evaporator are arranged side by side, one above the other, along the flow direction of the ventilation duct.

[0010] In some embodiments, the evaporator includes evaporation fins and evaporation heat exchange tubes passing through the evaporation fins, and the flow-blocking component is connected to the evaporation fins.

[0011] In some embodiments, there are multiple evaporation fins, which are arranged at intervals along the width direction of the evaporator, forming an evaporation channel between two adjacent evaporation fins, and the evaporation heat exchange tube passes through the evaporation fins along the width direction of the evaporator.

[0012] In some embodiments, the flow-blocking component includes flow-blocking fins connected to the evaporating fins. There are multiple flow-blocking fins, each corresponding to one of the evaporating fins. The flow-blocking fins and the evaporating fins are an integral structure, and the flow-blocking fins form the flow-blocking component.

[0013] In some embodiments, the condenser includes condenser fins and condenser heat exchange tubes, and the heat pump drying assembly further includes at least one end plate, with the condenser heat exchange tubes passing through the end plate and the condenser fins, and the evaporator heat exchange tubes passing through the end plate and the evaporator fins.

[0014] In some embodiments, the evaporating fins and the condensing fins are spaced apart along the airflow direction of the ventilation duct, with the evaporating fins located upstream of the condensing fins.

[0015] In some embodiments, the condenser heat exchange tube includes a plurality of U-shaped tubes, all of which are inserted through the condenser fins and connected end to end. The refrigerant inlet and outlet of the condenser and the refrigerant inlet and outlet of the evaporator are located on the same side of the end plate.

[0016] In some embodiments, the evaporator is disposed at the lower part of the ventilation duct, the projected height of the evaporator in the direction perpendicular to the ventilation duct is less than the projected height of the condenser in the direction perpendicular to the ventilation duct, and a gap is formed between the evaporator and the inner wall of the heat exchange shell.

[0017] This application provides a washing appliance, which includes an inner tank and a heat pump drying assembly. The air duct component further includes an air inlet pipe and an exhaust pipe, both of which are connected to the inner tank and the heat exchange shell.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of a washing appliance according to certain embodiments of this application;

[0021] Figure 2 This is a partial perspective view of a washing appliance according to certain embodiments of this application;

[0022] Figure 3 This is another perspective schematic diagram of a heat pump drying system according to certain embodiments of this application;

[0023] Figure 4 This is a partial cross-sectional schematic diagram of a heat pump drying system according to one embodiment of this application;

[0024] Figure 5 This is a partial cross-sectional schematic diagram of a heat pump drying system according to another embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the structure of the evaporator and condenser according to certain embodiments of this application;

[0026] Figure 7 This is an exploded view of the evaporator and condenser according to certain embodiments of this application;

[0027] Figure 8 This is a partial cross-sectional schematic diagram of a heat pump drying system according to another embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1000-Washing appliance, 1100-Inner tank, 1101-Washing chamber, 1110-Heat pump drying assembly, 1200-Heat pump drying system, 100-Air duct component, 10-Heat exchange shell, 11-Ventilation duct, 20-Evaporator, 21-Evaporator fins, 22-Evaporator heat exchange tube, 30-Condenser, 31-Condenser fins, 32-Condenser heat exchange tube, 33-U-tube, 60-Compressor, 70-Inlet pipe, 80-Exhaust pipe, 90-Throttling device, 200-Flow obstruction component, 210-Flow obstruction fins, 220-End plate, 1300-Water cup, 1400-Base. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0031] In the description of the embodiments of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0033] In embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The following disclosure provides numerous different embodiments or examples for implementing various structures of the embodiments of this application. To simplify the disclosure of the embodiments of this application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Reference numerals and / or reference letters may be repeated in different examples of the embodiments of this application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Furthermore, the embodiments of this application provide examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0035] Please see Figure 1 The washing appliance 1000 of this application includes an inner tank 1100 and a heat pump drying assembly 1110. The heat pump drying assembly 1110 includes an air duct component 100 and a heat pump drying system 1200, with the air duct component 100 connected to the inner tank 1100. The washing appliance 1000 is mainly used for washing various types of tableware. The inner tank 1100 can serve as the main structure of the washing appliance 1000, and it has a washing chamber 1101 with an opening. Tableware and other objects can be placed into the washing chamber 1101 through the opening. The washing chamber 1101 may be equipped with a bracket for supporting and fixing tableware, and a water cup 1300 placed below the bracket. The water cup 1300 is used to collect and drain water generated during the washing and condensation processes. The washing appliance 1000 is, for example, a dishwasher.

[0036] The heat pump drying system 1200 dries the humid, hot air flowing out of the inner tank 1100 and heats the dried air so that the heated, dried air flows back into the inner tank 1100, thus achieving the effect of drying tableware and other items. The washing appliance 1000 is, for example, a dishwasher. It should be noted that the dried air mentioned above is relative to the humid, hot air inside the inner tank 1100, and does not mean that the air contains absolutely no moisture.

[0037] Please see Figures 2-4In some embodiments, the air duct component 100 includes a heat exchange housing 10 configured to communicate with the inner tank 1100 of the washing appliance 1000. The heat exchange housing 10 forms a ventilation duct 11. The heat pump drying system 1200 includes a compressor 60, a condenser 30, a throttling device 90, and an evaporator 20 constituting a closed refrigerant circuit. The evaporator 20 and the condenser 30 are spaced apart in the heat exchange housing 10. The evaporator 20 is used to cool the airflow flowing out of the inner tank 1100, and the condenser 30 is used to heat the airflow flowing into the inner tank 1100. The projected area of ​​the evaporator 20 in the direction X perpendicular to the ventilation duct 11 is smaller than the projected area of ​​the condenser 30 in the direction X perpendicular to the ventilation duct 11.

[0038] In the heat pump drying assembly 1110 of this application embodiment, the projected area of ​​the evaporator 20 in the direction X perpendicular to the ventilation duct 11 is smaller than the projected area of ​​the condenser 30 in the direction X perpendicular to the ventilation duct 11. This allows part of the airflow to first flow through the evaporator 20 to cool down before flowing to the condenser 30, while the other part of the airflow flows directly to the condenser 30. This reduces the energy absorbed by the refrigerant in the evaporator 20, which helps to reduce the generation of condensate. At the same time, it reduces the operating temperature difference of the compressor 60, thereby reducing the workload of the compressor 60 and improving the energy efficiency of the heat pump drying system 1200, thus improving the drying effect of the heat pump drying system 1200.

[0039] Specifically, the heat exchange housing 10 is used for ventilation. The heat exchange housing 10 can be made of easily moldable materials such as plastic, making it easy to manufacture. The ventilation channel 11 formed by the heat exchange housing 10 is used to achieve the effect of ventilation, allowing airflow to circulate between the inner tank 1100 of the washing appliance 1000 and the ventilation channel 11, so as to achieve the effect of drying tableware and other items.

[0040] The heat pump drying system 1200 is a module with heat exchange function. The heat pump drying system 1200 has at least some of the components of the heat pump drying system 1200 of the washing appliance 1000, so that the washing appliance 1000 can achieve the effect of drying tableware and other items through the heat pump drying system 1200.

[0041] The heat exchange housing 10 can be configured with a specific external structure according to the installation location of the heat pump drying system 1200, so that the heat pump drying system 1200 can fit more compactly with the surrounding components. The heat exchange housing 10 is connected to the inner liner 1100.

[0042] Evaporator 20 is a heat exchanger in heat pump drying system 1200. When heat pump drying system 1200 is working, evaporator 20 can cool by absorbing heat from the air around evaporator 20 to lower the temperature of the surrounding air, so that the airflow flowing through evaporator 20 condenses to form condensate water, thus achieving the effect of drying the air.

[0043] The evaporator 20 is roughly flat. The evaporator 20 can be placed vertically, or in other words, the length of the evaporator 20 is roughly horizontal. The length of the evaporator 20 is roughly parallel to the airflow direction X of the ventilation duct 11, so as to increase the contact area between the airflow in the ventilation duct 11 and the evaporator 20, which is beneficial to improving the drying effect of the air flowing through the evaporator 20.

[0044] The condenser 30 is also a heat exchanger in the heat pump drying system 1200. When the heat pump drying system 1200 is working, the condenser 30 can generate heat to heat the surrounding air, thereby increasing the temperature of the surrounding air so that the airflow flowing through the condenser 30 can re-enter the inner tank 1100 of the washing appliance 1000 to achieve the effect of drying tableware and other items.

[0045] The condenser 30 is roughly flat. The condenser 30 can be placed vertically, or in other words, the length of the condenser 30 is roughly horizontal, and the length of the condenser 30 is roughly parallel to the airflow direction X of the ventilation duct 11, so as to increase the contact area between the airflow in the ventilation duct 11 and the condenser 30, which is beneficial to improving the heating effect of the air flowing through the condenser 30.

[0046] The projected area of ​​the evaporator 20 in the direction X perpendicular to the ventilation duct 11 is smaller than the projected area of ​​the condenser 30 in the direction X perpendicular to the ventilation duct 11. This can be because the height of the evaporator 20 is smaller than the height of the condenser 30, or the width of the evaporator 20 is smaller than the width of the condenser 30, or the height of the evaporator 20 is smaller than the height of the condenser 30 and the width of the evaporator 20 is smaller than the width of the condenser 30.

[0047] Please see Figure 4 In some embodiments, the evaporator 20 is disposed above the ventilation duct 11. This causes a portion of the airflow to flow from above the ventilation duct 11 through the evaporator 20 to the condenser 30, while another portion of the airflow flows from below the ventilation duct 11 to the condenser 30, thus dividing the airflow path.

[0048] Please see Figure 5 In some embodiments, the heat pump drying assembly 1110 includes a flow-blocking component 200, which is connected to the evaporator 20. The flow-blocking component 200 and the evaporator 20 are arranged side by side, one above the other, along the flow direction X of the ventilation duct 11.

[0049] The flow obstruction component 200 and the evaporator 20 can be an integral structure. When the evaporator 20 is located in the upper part of the ventilation duct 11, the flow obstruction component 200 is located in the lower part of the ventilation duct 11.

[0050] The airflow flowing through the evaporator 20 and the airflow flowing through the flow-blocking component 200 can be mixed before flowing into the condenser 30, reducing the temperature difference between the airflows entering the condenser 30, so that the compressor 60 can operate smoothly.

[0051] The flow-blocking component 200 can create resistance to the airflow, reduce the airflow velocity, and make the airflow flowing through the evaporator 20 and the airflow flowing through the flow-blocking component 200 have the same velocity, so that they can be fully mixed before flowing to the condenser 30.

[0052] Please see Figures 5-7 In some embodiments, the evaporator 20 includes evaporation fins 21 and evaporation heat exchange tubes 22 passing through the evaporation fins 21, and the flow-blocking component 200 is connected to the evaporation fins 21.

[0053] In some embodiments, there are multiple evaporator fins 21, which are arranged at intervals along the width Y direction of the evaporator 20. An evaporation channel is formed between two adjacent evaporator fins 21, and the evaporator heat exchange tube 22 passes through the evaporator fins 21 along the width Y direction of the evaporator 20. The evaporator fins 21 can be square-shaped, and the material of the evaporator fins 21 can be a metal material with high thermal conductivity, such as copper. It is understood that the shape of the evaporator fins 21 can also be other shapes, and there are no specific limitations. The evaporator fins 21 can increase the contact area between the evaporator 20 and the airflow, allowing the refrigerant to quickly absorb heat from the airflow and improve heat exchange efficiency.

[0054] The thickness direction of the evaporator fins 21 can be consistent with the width direction Y of the evaporator 20, that is, the thickness direction of the evaporator fins 21 can be perpendicular to the flow direction X of the ventilation duct 11, so that the direction of the evaporation channel formed by the evaporator fins 21 is consistent with the flow direction X of the ventilation duct 11, which facilitates the flow of air in the ventilation duct 11.

[0055] Evaporator heat exchange tubes 22 are inserted through evaporator fins 21 along the width Y direction of evaporator 20, so that the airflow comes into contact with the evaporator heat exchange tubes 22 when flowing through the evaporation channel to achieve heat exchange. The shape of evaporator heat exchange tubes 22 can be U-shaped, and there can be multiple evaporator heat exchange tubes 22 arranged end to end along a direction perpendicular to the thickness of evaporator fins 21. Evaporator heat exchange tubes 22 can be made of copper tubes, steel tubes, etc., and are used for refrigerant flow.

[0056] Please see Figure 5In some embodiments, the flow-blocking component 200 includes flow-blocking fins 210 connected to the evaporating fins 21. There are multiple flow-blocking fins 210, and each flow-blocking fin 210 corresponds to one of the evaporating fins 21. The flow-blocking fins 210 and the evaporating fins 21 are an integral structure, and the flow-blocking fins 210 form the flow-blocking component 200.

[0057] The number of flow-blocking fins 210 can be the same as the number of evaporating fins 21. The thickness direction of the flow-blocking fins 210 can be the same as the thickness direction of the evaporating fins 21. The length direction of the flow-blocking fins 210 and the length direction of the evaporating fins 21 can be the same as the length direction of the evaporator 20. The thickness of the flow-blocking fins 210 can be the same as the thickness of the evaporating fins 21, and the length of the flow-blocking fins 210 can be the same as the length of the evaporating fins 21.

[0058] The flow-blocking fins 210 and the evaporating fins 21 can be integrally formed from the same material, which can improve the manufacturing and installation efficiency of the flow-blocking component 200.

[0059] Please see Figures 5-7 In some embodiments, the condenser 30 includes condensing fins 31 and condensing heat exchange tubes 32, and the heat pump drying assembly 1110 also includes at least one end plate 220, with the condensing heat exchange tubes 32 passing through the end plate 220 and the condensing fins 31, and the evaporating heat exchange tubes 22 passing through the end plate 220 and the evaporating fins 21.

[0060] The number of condenser fins 31 can be multiple, arranged at intervals, with condensation channels formed between adjacent condenser fins 31, which are connected to the evaporation channel. The condenser fins 31 can be square plates, and the material can be a metal with high thermal conductivity, such as copper. It is understood that the shape of the condenser fins 31 can also be other shapes, without specific limitations. The condenser fins 31 can increase the contact area between the condenser 30 and the airflow, allowing the refrigerant to quickly release heat into the airflow and improving heat exchange efficiency.

[0061] The condenser heat exchange tube 32 passes through the condenser fins 31 along the thickness direction, so that the airflow comes into contact with the condenser heat exchange tube 32 when it flows through the condensation channel, thereby achieving heat exchange. The evaporator heat exchange tube 22 can be made of copper tube, steel tube, etc., and is used for refrigerant flow.

[0062] Along the thickness direction of the condenser fin 31, the projected area of ​​the end plate 220 is greater than the sum of the projected areas of the evaporator fin 21 and the condenser fin 31. There can be one or two end plates 220. When there are two end plates 220, the condenser fin 31 and the evaporator fin 21 are located between the two end plates 220.

[0063] The condenser 30 and evaporator 20 can be formed into a modular structure by using end plate 220, which is beneficial to improving the manufacturing efficiency of evaporator 20 and condenser 30.

[0064] Please see Figure 5 In some embodiments, along the airflow direction X of the ventilation duct 11, the evaporator fins 21 and the condenser fins 31 are spaced apart, with the evaporator fins 21 located upstream of the condenser fins 31. Since the flow-blocking component 200 and the evaporator 20 are arranged side by side, the flow-blocking fin 210 is also located upstream of the condenser fins 31, so that part of the airflow flows to the condenser fins 31 after passing through the evaporator fins 21, and another part of the airflow flows to the condenser fins 31 after passing through the flow-blocking fin 210.

[0065] Please see Figures 5-7 In some embodiments, the condenser heat exchange tube 32 includes multiple U-shaped tubes, which are all inserted through the condenser fins 31 and connected end to end. The refrigerant inlet and outlet ends of the condenser 30 and the refrigerant inlet and outlet ends of the evaporator 20 are located on the same side of the end plate 220.

[0066] Using U-shaped tubes can reduce the number of welding points on the condenser heat exchange tube 32 and improve the sealing performance of the condenser heat exchange tube 32, thereby reducing the manufacturing cost of the condenser 30 and the risk of refrigerant leakage.

[0067] Multiple U-shaped tubes are inserted into the condenser fins 31 and connected end to end, allowing the refrigerant to flow in multiple U-shaped tubes, extending the flow path of the refrigerant and giving the refrigerant more time to contact the condenser fins 31.

[0068] Multiple U-shaped tubes can be arranged in a direction perpendicular to the thickness of the condenser fins 31, allowing the U-shaped tubes to be arranged in multiple layers in a limited space, thus improving the space utilization of the condenser 30.

[0069] The refrigerant inlet and outlet of the condenser 30 and the refrigerant inlet and outlet of the evaporator 20 are both located on the same side of the end plate 220, so that the pipes connected to the inlet and outlet of the condenser heat exchange tube 32 and the evaporator heat exchange tube 22 are all located on the same side of the end plate 220. This makes the structure of the heat pump drying assembly 1110 compact, and maintenance can be performed from only one side, improving the maintenance convenience of the heat pump drying assembly 1110.

[0070] Please see Figure 8 In some embodiments, the evaporator 20 is disposed at the lower part of the ventilation duct 11, and the projected height of the evaporator 20 in the direction X perpendicular to the ventilation duct 11 is less than the projected height of the condenser 30 in the direction X perpendicular to the ventilation duct 11. A gap is formed between the evaporator 20 and the inner wall of the heat exchange shell 10.

[0071] The gaps provide a natural downward flow channel for condensate, reducing its accumulation and preventing mold growth that could corrode the evaporator 20 and affect its heat exchange efficiency. They also facilitate the cleaning of dust or condensate buildup at the bottom of the evaporator 20, thus improving the ease of maintenance of the heat pump drying assembly 1110.

[0072] In some embodiments, the ratio of the projected area of ​​the evaporator 20 in the direction perpendicular to the airflow direction X of the ventilation duct 11 to the projected area of ​​the condenser 30 in the direction perpendicular to the airflow direction X of the ventilation duct 11 ranges from 0.5 to 0.9. For example, the ratio of the projected area of ​​the evaporator 20 in the direction perpendicular to the airflow direction X of the ventilation duct 11 to the projected area of ​​the condenser 30 in the direction perpendicular to the airflow direction X of the ventilation duct 11 can be 0.55, 0.65, 0.75, 0.85, etc.

[0073] When the ratio of the projected area of ​​the evaporator 20 in the direction X perpendicular to the ventilation duct 11 to the projected area of ​​the condenser 30 in the direction X perpendicular to the ventilation duct 11 is within the above range, most of the airflow flows to the condenser 30 after being dried and cooled by the evaporator 20, and a small portion of the airflow flows directly to the condenser 30. This ensures the drying effect of the heat pump drying component 1110 while reducing the generation of condensate and lowering the workload of the compressor 60.

[0074] Please see Figure 2 In some embodiments, the heat pump drying system 1200 further includes a tray 50, on which the compressor 60 and heat exchange housing 10 are mounted. The compressor 60 and heat exchange housing 10 are spaced apart along the depth direction of the inner tank 1100. Thus, the compressor 60 and heat exchange housing 10 are formed as a single unit via the tray 50, which facilitates the installation of the heat pump drying system 1200 as a whole and improves the assembly efficiency of the washing appliance 1000.

[0075] Specifically, the tray 50 can be mounted on the base 1400 of the washing appliance 1000. Since the inner tank 1100 has more installation space in its depth direction, the compressor 60 and heat exchange housing 10 are spaced apart along the depth direction of the inner tank 1100, which makes efficient use of the space in the washing appliance 1000 and reduces interference between the compressor 60 and heat exchange housing 10 and other components. The depth direction of the inner tank 1100 is the direction in which the opening of the washing chamber 1104 extends inward.

[0076] Please see Figure 2 In some embodiments, the air duct component 100 includes an air inlet pipe 70 and an exhaust pipe 80, both of which are connected to the heat exchange housing 10. At least a portion of the air inlet pipe 70 and at least a portion of the exhaust pipe 80 are integrally formed. This improves the assembly efficiency of the air inlet pipe 70 and the exhaust pipe 80, which helps to reduce the manufacturing cost of the washing appliance 1000.

[0077] Specifically, the air inlet pipe 70 can guide the airflow in the inner liner 1100 into the heat exchange shell 10, and the exhaust pipe 80 can guide the airflow after passing through the condenser 30 into the inner liner 1100, so that the airflow can circulate between the air duct component 100 and the inner liner 1100.

[0078] In some embodiments, the intake pipe 70 may be connected to the top wall of the inner liner 1100, while the exhaust pipe 80 may be connected to the side wall of the inner liner 1100.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A heat pump drying assembly for a laundry appliance, characterized by, The heat pump drying assembly includes: A duct component, the duct component including a heat exchange housing configured to communicate with the inner tank of the washing appliance, the heat exchange housing forming a ventilation duct; and A heat pump drying system includes a compressor, a condenser, a throttling device, and an evaporator that form a closed refrigerant circuit. The evaporator and the condenser are spaced apart in the heat exchange shell. The evaporator is used to cool the airflow flowing out of the inner liner, and the condenser is used to heat the airflow flowing into the inner liner. Wherein, the projected area of ​​the evaporator perpendicular to the airflow direction of the ventilation duct is smaller than the projected area of ​​the condenser perpendicular to the airflow direction of the ventilation duct.

2. The heat pump drying assembly of claim 1, wherein, The heat pump drying assembly includes a flow-blocking component connected to the evaporator. The flow-blocking component and the evaporator are arranged side by side, one above the other, along the flow direction of the ventilation duct.

3. The heat pump drying assembly of claim 2, wherein, The evaporator includes evaporation fins and evaporation heat exchange tubes passing through the evaporation fins, and the flow-blocking component is connected to the evaporation fins.

4. The heat pump drying assembly of claim 3, wherein, The number of evaporation fins is multiple, and the multiple evaporation fins are arranged at intervals along the width direction of the evaporator. An evaporation channel is formed between two adjacent evaporation fins, and the evaporation heat exchange tube passes through the evaporation fins along the width direction of the evaporator.

5. The heat pump drying assembly of claim 3, wherein, The flow-blocking component includes flow-blocking fins connected to the evaporating fins. There are multiple flow-blocking fins, and each flow-blocking fin corresponds to one of the evaporating fins. The flow-blocking fins and the evaporating fins are an integral structure, and the flow-blocking fins form the flow-blocking component.

6. The heat pump drying assembly of claim 3, wherein, The condenser includes condenser fins and condenser heat exchange tubes. The heat pump drying assembly also includes at least one end plate. The condenser heat exchange tubes pass through the end plate and the condenser fins, and the evaporator heat exchange tubes pass through the end plate and the evaporator fins.

7. The heat pump drying assembly of claim 6, wherein, Along the airflow direction of the ventilation duct, the evaporation fins and the condensation fins are spaced apart, with the evaporation fins located upstream of the condensation fins.

8. The heat pump drying assembly of claim 6, wherein, The condenser heat exchange tube includes multiple U-shaped tubes, all of which are inserted through the condenser fins and connected end to end. The refrigerant inlet and outlet of the condenser and the refrigerant inlet and outlet of the evaporator are located on the same side of the end plate.

9. The heat pump drying assembly of claim 1, wherein, The evaporator is located at the lower part of the ventilation duct. The projected height of the evaporator in the direction perpendicular to the ventilation duct is less than the projected height of the condenser in the direction perpendicular to the ventilation duct. A gap is formed between the evaporator and the inner wall of the heat exchange shell.

10. A washing appliance characterised in that, include: Inner liner; and The heat pump drying assembly according to any one of claims 1-9, wherein the air duct component further includes an air inlet pipe and an exhaust pipe, both of which are connected to the inner liner and the heat exchange shell.

Images