Laundry treating apparatus

Abstract

The utility model provides clothes processing equipment which can give consideration to miniaturization and heat exchange capacity of a heat pump assembly. The clothes treating apparatus includes a drum and a heat pump assembly that dries clothes in the drum. The heat pump assembly comprises an air path shell; an evaporator that dehumidifies the air; the evaporator and the condenser are arranged in the upper space part of the roller, and at least one of the evaporator and the condenser is provided with a first snakelike pipeline and a second snakelike pipeline which are connected in parallel in sequence in the direction perpendicular to the windward side; the first S-shaped pipeline and the second S-shaped pipeline respectively comprise a first S-shaped pipe and a second S-shaped pipe, the first S-shaped pipe is provided with a plurality of micro-channels which are connected in parallel, the second S-shaped pipe is provided with a plurality of micro-channels which are connected in parallel, and the first collecting pipe is connected with an opening in one end of the first S-shaped pipe and an opening in one end of the second S-shaped pipe; and the second collecting pipe is respectively connected with the openings at the other ends of the first coiled pipe and the second coiled pipe.

Description

Technical Field

[0001] The utility model relates to a clothing treatment device. Specifically, it relates to a clothing treatment device with a drying component that can balance miniaturization and heat exchange capacity. Background Art

[0002] With the progress of the technology in the dryer industry and the increasing demand for drying by people, consumers pay more and more attention to the drying capacity of dryers, and there are washing and drying requirements for different partitions, especially in multi-member family groups. Consumers gradually tend to wash underwear, socks, and large-category clothes separately. The demand for partition cleaning of small and close-fitting clothes / infant clothes by mothers and babies is also increasing day by day. Therefore, partition washing, drying, and care of multi-cylinder clothing treatment devices are required. At present, there are only upper and lower double-partition washing / dryers or single small-cylinder clothing treatment devices on the market. If functions such as combined washing and drying, drying, and separate treatment of mothers and babies and small and close-fitting clothes are to be realized, another small-cylinder clothing treatment device is needed.

[0003] The overall height of the existing double-partition clothing treatment device is already relatively high, and the space for placing the heat pump component is compact. Most of the existing heat pump components use a combination form of copper tubes and aluminum fins with a microchannel heat exchanger. If the use requirements of an additional small-cylinder clothing treatment device are to be realized, the placement space of the heat pump component will be even more compact. If the existing heat pump component is used, it cannot be satisfied in terms of space structure; if the heat exchange area of the heat pump component is reduced to meet the space, the equal heat exchange capacity cannot be satisfied. Moreover, even if it is not a multi-cylinder clothing treatment device, there is still a need to balance the miniaturization of the heat pump component and the heat exchange capacity. The existing single-layer microchannel heat exchanger cannot achieve sufficient heat exchange capacity in terms of heat exchange area and cannot meet the drying effect required by the design goal.

[0004] In Patent Document 1, a technical solution for preventing the reduction of heat exchange capacity by using a header pipe is proposed. However, Patent Document 1 does not involve the arrangement method of flat tubes for refrigerant flow, and there is room for improvement in its heat exchange capacity.

[0005] Prior Art Documents

[0006] Patent Document 1: CN106319910B Summary of the Utility Model

[0007] Problems to be Solved by the Utility Model

[0008] The utility model expects to further improve the heat exchange capacity on the premise of meeting the space requirements. That is, the purpose of the utility model is to provide a clothing treatment device that can balance the miniaturization of the heat pump component and the heat exchange capacity.

[0009] Solutions for Solving the Problems

[0010] One technical solution of the present utility model provides a laundry treatment device, characterized in that the laundry treatment device comprises: a drum for receiving laundry; and a heat pump assembly for drying the laundry in the drum by using heated air. The heat pump assembly comprises: an air duct housing connected to the drum so that air can circulate between the drum and the air duct housing; an evaporator which is a microchannel evaporator disposed in the air duct housing, the evaporator having a windward surface, and the air led out from the drum passes through the evaporator from the windward surface of the evaporator, thereby dehumidifying the air; and a condenser which is a microchannel condenser disposed in the air duct housing at a position downstream of the evaporator in the air flow direction, the condenser having a windward surface, and the air passing through the evaporator passes through the condenser from the windward surface of the condenser, thereby heating the air. The evaporator and the condenser are disposed in an upper space above the drum, and the evaporator and the condenser are arranged along the rotation direction of the drum. At least one of the evaporator and the condenser has the following structure: in a direction perpendicular to the windward surface, a first serpentine pipe and a second serpentine pipe are sequentially provided. The first serpentine pipe and the second serpentine pipe each comprise a first serpentine tube and a second serpentine tube, and the first serpentine tube and the second serpentine tube are connected in parallel. In the first serpentine pipe itself, there are a plurality of microchannels connected in parallel, and in the second serpentine pipe itself, there are a plurality of microchannels connected in parallel. At least one of the evaporator and the condenser further comprises: a first header having a plurality of interfaces, and the openings at one ends of the first serpentine tubes and the second serpentine tubes of the first serpentine pipe and the second serpentine pipe are respectively connected to the plurality of interfaces of the first header; and a second header having a plurality of interfaces, and the openings at the other ends of the first serpentine tubes and the second serpentine tubes of the first serpentine pipe and the second serpentine pipe are respectively connected to the plurality of interfaces of the second header.

[0011] Thereby, based on the double-layer serpentine pipe, the heat exchange area can be increased, the refrigerant flow rate in the evaporator can be increased, and further the heat exchange space of the refrigerant in the evaporator can be changed, so that the refrigerant in the evaporator can fully and effectively exchange heat with the air, and the heat exchange capacity of the evaporator is increased. At the same time, based on the dual-path parallel structure, the refrigerant flows in multiple channels in the evaporator, reducing the refrigerant flow resistance and the pressure drop in the evaporator, so that the effective heat exchange space in the evaporator is increased, and the heat exchange capacity is increased. In addition, the upper and lower serpentine pipes are connected by headers, ensuring the rapid circulation of the upper and lower serpentine pipes. At the same time, the upper and lower layers are connected by headers, enabling the refrigerant to mix in the headers and then be evenly distributed, which is conducive to the full heat exchange between the air and the refrigerant and avoids the influence of large local temperature differences on the heat exchange performance of the evaporator. Thereby, a laundry treatment device can be provided which can balance the miniaturization of the heat pump assembly and the heat exchange capacity.

[0012] Preferably, the first manifold connects the first serpentine pipeline and the second serpentine pipeline, and the second manifold connects the first serpentine pipeline and the second serpentine pipeline. The first manifold allows refrigerant to enter and distributes the refrigerant to the first serpentine tubes and the second serpentine tubes of the first serpentine pipeline and the first serpentine tubes and the second serpentine tubes of the second serpentine pipeline. The second manifold receives the refrigerant flowing out from the first serpentine tubes and the second serpentine tubes of the first serpentine pipeline and the first serpentine tubes and the second serpentine tubes of the second serpentine pipeline, and sends out the refrigerant.

[0013] Thereby, the refrigerant can flow through the upper and lower layers of serpentine pipelines simultaneously, and the heat exchange capacity of the first serpentine pipeline and the second serpentine pipeline can be made uniform. When air passes through the first serpentine pipeline and the second serpentine pipeline, it can be heated evenly.

[0014] Preferably, the first manifold has a partition plate, which divides the internal cavity of the first manifold into an inlet volume cavity and an outlet volume cavity. The butting interfaces connected to the openings at one ends of the first serpentine tubes and the second serpentine tubes of the first serpentine pipeline are located in the inlet volume cavity, and the butting interfaces connected to the openings at one ends of the first serpentine tubes and the second serpentine tubes of the second serpentine pipeline are located in the outlet volume cavity. The second manifold connects the first serpentine pipeline and the second serpentine pipeline. The inlet volume cavity of the first manifold allows refrigerant to enter and distributes the refrigerant to the first serpentine pipeline. The second manifold receives the refrigerant flowing out from the first serpentine pipeline and sends the refrigerant to the second serpentine pipeline. The outlet volume cavity of the first manifold receives the refrigerant flowing out from the second serpentine pipeline and sends out the refrigerant.

[0015] Thereby, the refrigerant can pass through the first serpentine pipeline on the upstream side and then through the second serpentine pipeline on the downstream side. After the refrigerant exchanges heat sufficiently in the first serpentine pipeline on the upstream side, it is mixed and evenly distributed in the second manifold and then passes through the second serpentine pipeline on the downstream side. With such a structure, the refrigerant can be fully utilized, and the utilization rate of the refrigerant in the evaporator can be improved, thereby further improving the heat exchange capacity.

[0016] Preferably, the inlet volume cavity is located below the outlet volume cavity.

[0017] Preferably, the inlet volume cavity is located above the outlet volume cavity.

[0018] Thereby, corresponding to the structures of the serpentine pipelines in the upper and lower layers, the inlet volume cavity and the outlet volume cavity can be arranged vertically, which is convenient for the connection between the first manifold and the serpentine pipelines in the upper and lower layers.

[0019] Preferably, at least one of the first serpentine pipeline and the second serpentine pipeline further includes a third serpentine pipe, which is connected to the first manifold and the second manifold in parallel with respect to the first serpentine pipe and the second serpentine pipe.

[0020] Thereby, based on the third serpentine pipe, the heat exchange capacity of each layer of the serpentine pipeline can be further improved.

[0021] Preferably, at least one of the evaporator and the condenser sequentially has a first serpentine pipeline, a second serpentine pipeline, and a third serpentine pipeline in a direction perpendicular to the windward surface. The third serpentine pipeline includes a first serpentine pipe and a second serpentine pipe. The first manifold connects the first serpentine pipeline, the second serpentine pipeline, and the third serpentine pipeline. The second manifold connects the first serpentine pipeline, the second serpentine pipeline, and the third serpentine pipeline. The first manifold supplies refrigerant and distributes the refrigerant to the first serpentine pipeline, the second serpentine pipeline, and the third serpentine pipeline. The second manifold receives the refrigerant flowing out from the first serpentine pipeline, the second serpentine pipeline, and the third serpentine pipeline, and sends out the refrigerant.

[0022] Thereby, based on the third serpentine pipeline, the heat exchange capacity of the heat pump assembly can be further improved.

[0023] Preferably, at least one of the evaporator and the condenser sequentially has a first serpentine pipeline, a second serpentine pipeline, and a third serpentine pipeline in a direction perpendicular to the windward surface. The third serpentine pipeline includes a first serpentine pipe and a second serpentine pipe. The first manifold has a plurality of interfaces connected to the openings at one ends of the first serpentine pipe and the second serpentine pipe of the third serpentine pipeline. The second manifold has a plurality of interfaces connected to the openings at the other ends of the first serpentine pipe and the second serpentine pipe of the third serpentine pipeline. The first manifold has a partition, which divides the inner cavity of the first manifold into an inlet volume cavity and a second intermediate volume cavity. The second manifold has a partition, which divides the inner cavity of the second manifold into a first intermediate volume cavity and an outlet volume cavity. The interfaces connected to the openings at one ends of the first serpentine pipe and the second serpentine pipe of the first serpentine pipeline are located in the inlet volume cavity. The interfaces connected to the openings at the other ends of the first serpentine pipe and the second serpentine pipe of the third serpentine pipeline are located in the outlet volume cavity. The first intermediate volume cavity of the second manifold connects the first serpentine pipeline and the second serpentine pipeline. The second intermediate volume cavity of the first manifold connects the second serpentine pipeline and the third serpentine pipeline. The inlet volume cavity of the first manifold supplies refrigerant and distributes the refrigerant to the first serpentine pipeline. The first intermediate volume cavity of the second manifold receives the refrigerant flowing out from the first serpentine pipeline and sends out the refrigerant to the second serpentine pipeline. The second intermediate volume cavity of the first manifold receives the refrigerant flowing out from the second serpentine pipeline and sends out the refrigerant to the third serpentine pipeline. The outlet volume cavity of the second manifold receives the refrigerant flowing out from the third serpentine pipeline and sends out the refrigerant.

[0024] Thus, based on the third serpentine pipeline, the heat exchange capacity of the heat pump module can be further improved.

[0025] Preferably, the evaporator and the condenser are arranged in an inverted V shape.

[0026] Thus, the space above the drum can be further utilized, and the space utilization rate can be improved.

[0027] Preferably, the laundry treating apparatus further has other drums on the side and / or above the heat pump module.

[0028] Thus, corresponding to the miniaturization of the heat pump module, the number of laundry treating drums of the laundry treating apparatus can be increased, and the accommodation capacity can be improved.

[0029] Effects of the utility model

[0030] Based on the laundry treating apparatus of the present utility model, the heat pump module thereof can take into account miniaturization and heat exchange capacity. Brief description of the drawings

[0031] Figure 1 is the front view of the laundry treating apparatus according to an embodiment of the present utility model.

[0032] Figure 2 is the perspective view of the laundry treating apparatus according to an embodiment of the present utility model after removing the outer shell.

[0033] Figure 3 is the internal schematic view of the heat pump module of the laundry treating apparatus according to an embodiment of the present utility model.

[0034] Figure 4 is the perspective view of the evaporator according to an embodiment of the present utility model.

[0035] Figure 5 is Figure 4 the sectional view taken along the line A-A of

[0036] Figure 6 is Figure 4 the sectional view taken along the line B-B of

[0037] Figure 7 is Figure 4 the sectional view taken along the line C-C of

[0038] Figure 8 is the perspective view of the first serpentine pipe.

[0039] Figure 9 is the perspective view of the second serpentine pipe.

[0040] Figure 10 is the perspective view of the first manifold.

[0041] Figure 11 It is a perspective view of the second manifold pipe.

[0042] Figure 12 It is a perspective view of the condenser of the embodiment of the present utility model.

[0043] Explanation of reference numerals

[0044] 100, laundry treatment device; 1, drum; 2, heat pump assembly; 10, air duct housing; 20, evaporator; 20m, windward surface of the evaporator; 30, condenser; 30m, windward surface of the condenser; 21, first serpentine pipe; 22, second serpentine pipe; 23, first serpentine tube; 24, second serpentine tube; 25, first manifold pipe; 26, second manifold pipe; 25a1-25a4, 26b1-26b4, docking ports; 23a, 23b, 24a, 24b, openings; 27, partition; 28, inlet volume chamber; 29, outlet volume chamber; K1, inlet; K2, outlet. Detailed implementation manners

[0045] Next, the detailed implementation manners of the embodiment of the present utility model will be described with reference to the accompanying drawings.

[0046] As the laundry treatment device of the present utility model, it can be a drum-type laundry treatment device. Hereinafter, a washing and drying integrated machine having both washing function and drying function will be taken as an example for description. Those skilled in the art can understand that the laundry treatment device of the present utility model can also be a dryer having only a drying function.

[0047] <Embodiment>

[0048] <Overall structure of the laundry treatment device>

[0049] Based on Figure 1 and Figure 2 , a brief description of the overall structure of the laundry treatment device of the embodiment will be given.

[0050] As Figure 1 , Figure 2 shown, the laundry treatment device 100 is, for example, a drum-type laundry treatment device, including: a drum 1 for receiving laundry; and a heat pump assembly 2 for drying the laundry in the drum by using heated air.

[0051] As Figure 2 shown, the heat pump assembly 2 includes an air duct housing 10 connected to the drum 1 so that air can circulate between the drum 1 and the air duct housing 10. Thus, a laundry treatment device 100 with a drying function can be obtained.

[0052] When the laundry treatment apparatus 100 is to implement its drying function, the heat pump assembly 2 sucks the humid air in the drum 1. The humid air is dehumidified and heated in the heat pump assembly 2, and then returned to the drum 1 as dry and hot air, thereby drying the laundry stored in the drum 1. The laundry treatment apparatus 100 can also be a multi-drum laundry treatment apparatus. For example, there are other drums on the side and / or above the heat pump assembly 2. Thus, the number of laundry treatment drums of the laundry treatment equipment can be increased corresponding to the miniaturization of the heat pump assembly, and the accommodation capacity can be improved.

[0053] <Structure of the heat pump assembly>

[0054] Figure 3 It is an internal schematic view of the heat pump assembly 2 of the embodiment. As Figure 3 shown, the heat pump assembly 2 further includes an evaporator 20 and a condenser 30. The evaporator 20 and the condenser 30 are arranged in the upper space above the drum 1. The evaporator 20 and the condenser 30 are arranged along the rotation direction of the drum 1. The evaporator 20 and the condenser 30 are arranged in an inverted V shape. Thus, the space above the drum 1 can be further utilized, and the space utilization rate can be improved.

[0055] As Figures 3 to 5 shown, the evaporator 20 is a microchannel evaporator and is arranged in the air duct housing 10. The evaporator 20 has a windward surface 20m. The air led out from the drum 1 passes through the evaporator 20 from the windward surface of the evaporator 20 as shown by the arrow in Figure 4 , thereby dehumidifying the air. The structure of the condenser 30 is the same as that of the evaporator 20. It can be understood that the condenser 30 is the structure obtained by turning the evaporator 20 over. That is, the condenser 30 is a microchannel condenser and is arranged in the air duct housing 10 at a position downstream of the evaporator 20 in the air flow direction. The condenser 30 has a windward surface 30m (refer to Figure 12 ), and the air passing through the evaporator 20 passes through the condenser 30 from the windward surface of the condenser 30, thereby heating the air.

[0056] Hereinafter, only the specific structure of the evaporator 20 will be described. It can be considered that the specific structure of the condenser 30 is the same as that of the evaporator 20.

[0057] Figure 4 It is a perspective view of the evaporator 20. As Figure 4As shown in the figure, in the direction perpendicular to the windward surface by 20 m (which can also be said to be the air flow direction), there are successively a first serpentine pipeline 21 and a second serpentine pipeline 22. That is, the first serpentine pipeline 21 and the second serpentine pipeline 22 are arranged along the air flow direction, with the first serpentine pipeline 21 on the upstream side and the second serpentine pipeline 22 on the downstream side. Both the first serpentine pipeline 21 and the second serpentine pipeline 22 include a first serpentine tube 23 and a second serpentine tube 24, and the first serpentine tube 23 and the second serpentine tube 24 are connected in parallel.

[0058] As Figure 4 shown, the evaporator 20 has: a first header 25 which has a plurality of connection ports 25a1 to 25a4 (refer to Figure 10 ), and the openings 23a and 24a at one ends of the first serpentine tubes 23 and the second serpentine tubes 24 of the first serpentine pipeline 21 and the second serpentine pipeline 22 are respectively connected to the plurality of connection ports of the first header 25; and a second header 26 which has a plurality of connection ports 26b1 to 26b4 (refer to Figure 11 ), and the openings 23b and 24b at the other ends of the first serpentine tubes 23 and the second serpentine tubes 24 of the first serpentine pipeline 21 and the second serpentine pipeline 22 are respectively connected to the plurality of connection ports of the second header 26.

[0059] In the present application, by making the evaporator 20 include microchannel flat tubes (the first serpentine tube 23 and the second serpentine tube 24), heat exchange fins (not shown), and headers (the first header 25 and the second header 26), and combining the headers between different layers and different flow paths, efficient heat exchange is achieved, and the refrigerant flow resistance can be reduced. The double-layer serpentine tubes (the first serpentine pipeline 21 and the second serpentine pipeline 22) increase the heat exchange area, increase the refrigerant flow rate in the evaporator 20, and then change the heat exchange space of the refrigerant in the evaporator 20, so that the refrigerant in the evaporator 20 can fully and effectively exchange heat with the air, and the heat exchange capacity of the evaporator 20 is increased. At the same time, based on the dual-path parallel structure, the refrigerant flows in multiple channels in the evaporator 20, reducing the refrigerant flow resistance and the pressure drop in the evaporator 20, so that the effective heat exchange space in the evaporator 20 is increased, increasing the heat exchange capacity. In addition, the upper and lower layer serpentine tubes are connected by headers, ensuring the rapid circulation of the upper and lower layer serpentine tubes. At the same time, the upper and lower layers are connected by headers, so that the refrigerant is mixed and then evenly distributed in the headers, which is conducive to the full heat exchange between the air and the refrigerant, and avoids the influence of large local temperature differences on the heat exchange performance of the evaporator 20. In the processing equipment with multiple laundry treatment units, a more efficient drying effect can be achieved in a compact space compared with traditional evaporators.

[0060] Figure 5 is Figure 4 the A-A direction view sectional view of Figure 5As shown in the sectional view taken along the line A-A, the microchannels of the first serpentine tube 23 and the second serpentine tube 24 are shown, through which the refrigerant flows. And, according to Figure 5 it is known that in the first serpentine tube 23 itself, there are a plurality of microchannels connected in parallel. Therefore, the flow of the refrigerant in the first serpentine tube 23 itself is in a parallel connection manner. The same is true for the second serpentine tube 24.

[0061] Figure 6 is Figure 4 the sectional view taken along the line B-B. As Figure 6 shown, in the sectional view taken along the line B-B, a structure is shown in which the four openings, namely the opening 23a of the first serpentine tube 23 of the first serpentine pipeline 21, the opening 24a of the second serpentine tube 24 of the first serpentine pipeline 21, the opening 23a of the first serpentine tube 23 of the second serpentine pipeline 22, and the opening 24a of the second serpentine tube 24 of the second serpentine pipeline 22, are connected to the first header 25.

[0062] As Figure 6 shown, the first header 25 has a partition 27, which divides the internal cavity of the first header 25 into an inlet volume chamber 28 and an outlet volume chamber 29. The docking ports connected to the openings at one ends of the first serpentine tube 23 and the second serpentine tube 24 of the first serpentine pipeline 21 are located in the inlet volume chamber 28. That is, the opening 23a of the first serpentine tube 23 of the first serpentine pipeline 21 and the opening 24a of the second serpentine tube 24 of the first serpentine pipeline 21 communicate with the inlet volume chamber 28. The docking ports connected to the openings at one ends of the first serpentine tube 23 and the second serpentine tube 24 of the second serpentine pipeline 22 are located in the outlet volume chamber 29. That is, the opening 23a of the first serpentine tube 23 of the second serpentine pipeline 22 and the opening 24a of the second serpentine tube 24 of the second serpentine pipeline 22 communicate with the inlet volume chamber 28. In this embodiment, the inlet volume chamber 28 is located above the outlet volume chamber 29, but it can also be that the inlet volume chamber 28 is located below the outlet volume chamber 29. Thus, the inlet volume chamber and the outlet volume chamber can be arranged vertically corresponding to the structure of the serpentine pipelines in the upper and lower layers, which is convenient for the connection of the first header with the serpentine pipelines in the upper and lower layers.

[0063] Figure 7 is Figure 4 the sectional view taken along the line C-C. As Figure 7 shown, in the sectional view taken along the line C-C, a structure is shown in which the four openings, namely the opening 23b of the first serpentine tube 23 of the first serpentine pipeline 21, the opening 24b of the second serpentine tube 24 of the first serpentine pipeline 21, the opening 23b of the first serpentine tube 23 of the second serpentine pipeline 22, and the opening 24b of the second serpentine tube 24 of the second serpentine pipeline 22, are connected to the second header 26.

[0064] As shown Figure 7 in Figure 7 , the second manifold 26 connects the first serpentine pipeline 21 and the second serpentine pipeline 22. That is, the openings 23b of the first serpentine tube 23 of the first serpentine pipeline 21, the openings 24b of the second serpentine tube 24 of the first serpentine pipeline 21, the openings 23b of the first serpentine tube 23 of the second serpentine pipeline 22, and the openings 24b of the second serpentine tube 24 of the second serpentine pipeline 22 are connected in the second manifold 26.

[0065] Figure 8 is a perspective view of the first serpentine tube. In Figure 8 it shows the opening 23a of the first serpentine tube 23 inserted into the first manifold 25 and the opening 23b inserted into the second manifold 26. As Figure 8 shown, the first serpentine tube 23 is formed to wind from one end of the first serpentine pipeline 21 ( Figure 8 the right end in Figure 8 to the other end of the first serpentine pipeline 21 ( Figure 8 the left end in

[0066] Figure 9 and then meander from the other end of the first serpentine pipeline 21 to the middle part of the first serpentine pipeline 21. Figure 9 is a perspective view of the second serpentine tube. In Figure 9 it shows the opening 24a of the second serpentine tube 24 inserted into the first manifold 25 and the opening 24b inserted into the second manifold 26. As Figure 9 shown, the second serpentine tube 24 is formed to meander from one end of the first serpentine pipeline 21 ( Figure 8 the right end in

[0067] to the middle part of the first serpentine pipeline 21. By setting the first serpentine tube 23 and the second serpentine tube 24 in the above-mentioned meandering structure, the heat exchange efficiency can be improved.

[0068] Figure 10 is a perspective view of the first manifold 25. As Figure 10 shown, the first manifold 25 has docking ports 25a1 to 25a4. Specifically, the docking port 25a1 corresponds to the opening 23a of the first serpentine tube 23 of the first serpentine pipeline 21, the docking port 25a2 corresponds to the opening 24a of the second serpentine tube 24 of the first serpentine pipeline 21, the docking port 25a3 corresponds to the opening 23a of the first serpentine tube 23 of the second serpentine pipeline 22, and the docking port 25a4 corresponds to the opening 24a of the second serpentine tube 24 of the second serpentine pipeline 22.

[0069] Figure 11 is a perspective view of the second manifold 26. As Figure 11As shown, the second manifold 26 has connection ports 26b1 to 26b4. Specifically, connection port 26b1 corresponds to the opening 24b of the second serpentine tube 24 of the first serpentine pipeline 21, connection port 26b2 corresponds to the opening 23b of the first serpentine tube 23 of the first serpentine pipeline 21, connection port 26b3 corresponds to the opening 24b of the second serpentine tube 24 of the second serpentine pipeline 22, and connection port 26b4 corresponds to the opening 23b of the first serpentine tube 23 of the second serpentine pipeline 22.

[0070] <Refrigerant circulation>

[0071] As Figure 6 shown, the first manifold 25 has an inlet K1 and an outlet K2. Refrigerant flows into the inlet volume chamber 28 of the first manifold 25 from the inlet K1. Due to the presence of the partition 27, after the refrigerant flows into the inlet volume chamber 28, it will not enter the outlet volume chamber 29, but will enter the first serpentine pipeline 21 through the opening 23a of the first serpentine tube 23 of the first serpentine pipeline 21 and the opening 24a of the second serpentine tube 24 of the first serpentine pipeline 21. That is, the inlet volume chamber 28 of the first manifold 25 allows the refrigerant to enter and distributes the refrigerant to the first serpentine pipeline 21.

[0072] The refrigerant entering the first serpentine pipeline 21 passes through the first serpentine tube 23 and the second serpentine tube 24 of the first serpentine pipeline 21 in parallel. At the same time, the refrigerant also passes through multiple microchannels of the first serpentine tube 23 itself and multiple microchannels of the second serpentine tube 24 itself in parallel. Therefore, the heat exchange efficiency can be effectively improved and the heat exchange capacity can be enhanced.

[0073] The refrigerant flowing through the first serpentine pipeline 21 enters the second manifold 26 through the opening 23b of the first serpentine tube 23 of the first serpentine pipeline 21 and the opening 24b of the second serpentine tube 24 of the first serpentine pipeline 21. The refrigerant entering the second manifold 26 will be mixed and evenly distributed in the second manifold 26, and then flows into the second serpentine pipeline 22 through the opening 23b of the first serpentine tube 23 of the second serpentine pipeline 22 and the opening 24b of the second serpentine tube 24 of the second serpentine pipeline 22. That is, the second manifold 26 receives the refrigerant flowing out of the first serpentine pipeline 21 and sends the refrigerant to the second serpentine pipeline 22. Since the refrigerant is mixed and evenly distributed in the second manifold 26, it can enter the second serpentine pipeline 22 in a uniform gas-liquid mixed state. Compared with the structure that directly enters the second serpentine pipeline 22 without the second manifold 26, the present application can enable the refrigerant to exhibit higher heat exchange efficiency in the second serpentine pipeline 22 and improve the heat exchange capacity.

[0074] The refrigerant entering the second serpentine pipeline 22 passes through the first serpentine tube 23 and the second serpentine tube 24 of the (second serpentine pipeline 22) in parallel. At the same time, the refrigerant also passes through a plurality of micro-channels of the first serpentine tube 23 itself and a plurality of micro-channels of the second serpentine tube 24 itself in a parallel manner. Therefore, the heat exchange efficiency can be effectively improved, and the heat exchange capacity can be enhanced.

[0075] The refrigerant flowing through the second serpentine pipeline 22 passes through the opening 23a of the first serpentine tube 23 of the second serpentine pipeline 22 and the opening 24a of the second serpentine tube 24 of the second serpentine pipeline 22, and thus returns to the first manifold 25 again and enters the outlet volume chamber 29 of the first manifold 25. The refrigerant that returns to the first manifold 25 again flows out through the outlet K2. That is, the outlet volume chamber 29 of the first manifold 25 receives the refrigerant flowing out from the second serpentine pipeline 22 and sends out the refrigerant. Thus, the circulation of the refrigerant in the evaporator 20 is completed.

[0076] Thus, the refrigerant can pass through the second serpentine pipeline 22 after passing through the first serpentine pipeline 21. After the refrigerant exchanges heat sufficiently in the first serpentine pipeline 21, it is mixed and evenly distributed in the second manifold 26, and then passes through the second serpentine pipeline 22. With such a structure, the refrigerant can be fully utilized, and the utilization rate of the refrigerant in the evaporator 20 can be improved, thereby further enhancing the heat exchange capacity.

[0077] <Variant Example>

[0078] In the above description, the first manifold 25 has a partition 27. However, it is also possible that the first manifold 25 does not have a partition 27. In this case, the first manifold 25 connects the first serpentine pipeline 21 and the second serpentine pipeline 22, and the second manifold 26 connects the first serpentine pipeline 21 and the second serpentine pipeline 22.

[0079] In this variant example, the first manifold 25 supplies the refrigerant and distributes the refrigerant to the first serpentine tube 23 and the second serpentine tube 24 of the first serpentine pipeline 21 and the first serpentine tube 23 and the second serpentine tube 24 of the second serpentine pipeline 22. That is, the refrigerant entering the first manifold 25 passes through the opening 23a of the first serpentine tube 23 of the first serpentine pipeline 21 and the opening 24a of the second serpentine tube 24 of the first serpentine pipeline 21, and thus enters the first serpentine pipeline 21. The refrigerant entering the first manifold 25 passes through the opening 23a of the first serpentine tube 23 of the second serpentine pipeline 22 and the opening 24a of the second serpentine tube 24 of the second serpentine pipeline 22, and thus enters the second serpentine pipeline 22.

[0080] In this modified example, in addition to flowing in parallel through the first serpentine tube 23 itself and the second serpentine tube 24 itself, and flowing in parallel between the first serpentine tube 23 and the second serpentine tube 24, the refrigerant also flows in parallel between the first serpentine pipeline 21 and the second serpentine pipeline 22. The second header 26 receives the refrigerant flowing out from the first serpentine tube 23 and the second serpentine tube 24 of the first serpentine pipeline 21 and the refrigerant flowing out from the first serpentine tube 23 and the second serpentine tube 24 of the second serpentine pipeline 22, and sends out the refrigerant.

[0081] In this modified example, the same effect can also be achieved based on the dual-path parallel structure and the structure in which the upper and lower serpentine tubes are connected by headers. In addition, since the refrigerant can flow through the upper and lower serpentine pipelines simultaneously, the heat exchange capacity of the first serpentine pipeline and the second serpentine pipeline can be made uniform. When the air passes through the first serpentine pipeline and the second serpentine pipeline, it can be heated evenly.

[0082] In addition, in the structure of the above-mentioned embodiment or the structure of the above-mentioned modified example, in the first serpentine pipeline 21 and the second serpentine pipeline 22, it is not limited to only having two serpentine tubes, namely the first serpentine tube 23 and the second serpentine tube 24. For example, it may also be that at least one of the first serpentine pipeline 21 and the second serpentine pipeline 22 further includes a third serpentine tube, and the third serpentine tube is connected to the first header 25 and the second header 26 in parallel with respect to the first serpentine tube 23 and the second serpentine tube 24. Thereby, based on the third serpentine tube, the heat exchange capacity of each layer of serpentine pipeline can be further improved.

[0083] In addition, in the structure of the above-mentioned embodiment or the structure of the above-mentioned modified example, it is not limited to only having a double-layer serpentine pipeline structure such as the first serpentine pipeline 21 and the second serpentine pipeline 22, and it may also have a third serpentine pipeline.

[0084] For example, in the case where the modified example has a three-layer serpentine pipeline, in the direction perpendicular to the windward surface of the evaporator 20, there are successively a first serpentine pipeline 21, a second serpentine pipeline 22, and a third serpentine pipeline. The third serpentine pipeline includes a first serpentine tube and a second serpentine tube (having the same structure as the first serpentine tube 23 and the second serpentine tube 24). The first header connects the first serpentine pipeline 21, the second serpentine pipeline 22, and the third serpentine pipeline, and the second header connects the first serpentine pipeline 21, the second serpentine pipeline 22, and the third serpentine pipeline. The first header supplies the refrigerant and distributes the refrigerant to the first serpentine pipeline 21, the second serpentine pipeline 22, and the third serpentine pipeline. The second header receives the refrigerant flowing out from the first serpentine pipeline 21, the second serpentine pipeline 22, and the third serpentine pipeline, and sends out the refrigerant. Thereby, based on the third serpentine pipeline, the heat exchange capacity of the heat pump assembly can be further improved.

[0085] In the case where, for example, the embodiment has a three-layer serpentine pipeline, in the direction perpendicular to the windward surface of the evaporator 20, there are successively a first serpentine pipeline 21, a second serpentine pipeline 22, and a third serpentine pipeline. The third serpentine pipeline includes a first serpentine tube and a second serpentine tube (having the same structure as the first serpentine tube 23 and the second serpentine tube 24). The first manifold 25 has a plurality of docking ports connected to the openings at one ends of the first serpentine tube and the second serpentine tube of the third serpentine pipeline. The second manifold 26 has a plurality of docking ports connected to the openings at the other ends of the first serpentine tube and the second serpentine tube of the third serpentine pipeline. The first manifold has a partition that divides the internal cavity of the first manifold into an inlet volume cavity and a second intermediate volume cavity. The second manifold has a partition that divides the internal cavity of the second manifold into a first intermediate volume cavity and an outlet volume cavity. The docking ports connected to the openings at one ends of the first serpentine tube and the second serpentine tube 24 of the first serpentine pipeline 21 are located in the inlet volume cavity. The docking ports connected to the openings at the other ends of the first serpentine tube and the second serpentine tube of the third serpentine pipeline are located in the outlet volume cavity. The first intermediate volume cavity of the second manifold connects the first serpentine pipeline 21 and the second serpentine pipeline 22. The second intermediate volume cavity of the first manifold connects the second serpentine pipeline 22 and the third serpentine pipeline. The inlet volume cavity of the first manifold allows the refrigerant to enter and distributes the refrigerant to the first serpentine pipeline 21. The first intermediate volume cavity of the second manifold receives the refrigerant flowing out from the first serpentine pipeline 21 and sends the refrigerant to the second serpentine pipeline 22. The second intermediate volume cavity of the first manifold receives the refrigerant flowing out from the second serpentine pipeline 22 and sends the refrigerant to the third serpentine pipeline. The outlet volume cavity of the second manifold receives the refrigerant flowing out from the third serpentine pipeline and sends the refrigerant out. Thus, based on the third serpentine pipeline, the heat exchange capacity of the heat pump assembly can be further improved.

[0086] The above has been mainly described based on the evaporator 20. However, as Figure 12 shown, the structure of the condenser 30 is the same as that of the evaporator 20, only with different orientations. Therefore, the above descriptions of the structural features of the evaporator 20 are all applicable to the condenser 30. For the heat pump assembly of the present application, as long as at least one of the evaporator 20 and the condenser 30 has the above structure, the technical effects of the present application can be achieved. Of course, if both the evaporator 20 and the condenser 30 are set to the above structure, the technical effects of the present application can be further excellently achieved.

Claims

1. A laundry treatment device, characterized in that, the laundry treatment device includes: a drum for receiving laundry; and a heat pump assembly for drying the laundry in the drum by using heated air, the heat pump assembly includes: an air duct housing connected to the drum so that air can circulate between the drum and the air duct housing; an evaporator which is a microchannel evaporator and is disposed in the air duct housing. The evaporator has a windward surface, and the air derived from the drum passes through the windward surface of the evaporator, thereby dehumidifying the air; and a condenser which is a microchannel condenser and is disposed in the air duct housing at a position downstream of the evaporator in the air flow direction. The condenser has a windward surface, and the air passing through the evaporator passes through the windward surface of the condenser, thereby heating the air, the evaporator and the condenser are disposed in an upper space above the drum, the evaporator and the condenser are arranged along the rotation direction of the drum, at least one of the evaporator and the condenser has the following structure: in a direction perpendicular to the windward surface, a first serpentine pipe and a second serpentine pipe are sequentially provided, both the first serpentine pipe and the second serpentine pipe include a first serpentine tube and a second serpentine tube, and the first serpentine tube and the second serpentine tube are connected in parallel. In the first serpentine tube itself, there are a plurality of microchannels connected in parallel, and in the second serpentine tube itself, there are a plurality of microchannels connected in parallel, at least one of the evaporator and the condenser further includes: a first manifold having a plurality of connection ports, and the openings at one ends of the first serpentine tubes and the second serpentine tubes of the first serpentine pipe and the second serpentine pipe are respectively connected to the plurality of connection ports of the first manifold; and a second manifold having a plurality of connection ports, and the openings at the other ends of the first serpentine tubes and the second serpentine tubes of the first serpentine pipe and the second serpentine pipe are respectively connected to the plurality of connection ports of the second manifold.

2. The laundry treatment device according to claim 1, characterized in that, the first manifold connects the first serpentine pipe and the second serpentine pipe, the second manifold connects the first serpentine pipe and the second serpentine pipe, the first manifold supplies refrigerant to enter and distributes the refrigerant to the first serpentine tubes and the second serpentine tubes of the first serpentine pipe and the second serpentine tubes of the second serpentine pipe, the second manifold receives the refrigerant flowing out from the first serpentine tubes and the second serpentine tubes of the first serpentine pipe and the refrigerant flowing out from the first serpentine tubes and the second serpentine tubes of the second serpentine pipe, and sends out the refrigerant.

3. The laundry treatment device according to claim 1, characterized in that, the first manifold has a partition plate which divides the inner cavity of the first manifold into an inlet volume cavity and an outlet volume cavity, The butt joint connected to the openings at one ends of the first serpentine tube and the second serpentine tube of the first serpentine pipeline is located in the inlet volume chamber. The butt joint connected to the openings at one ends of the first serpentine tube and the second serpentine tube of the second serpentine pipeline is located in the outlet volume chamber. The second manifold connects the first serpentine pipeline and the second serpentine pipeline. The inlet volume chamber of the first manifold allows refrigerant to enter and distributes the refrigerant to the first serpentine pipeline. The second manifold receives the refrigerant flowing out of the first serpentine pipeline and sends the refrigerant to the second serpentine pipeline. The outlet volume chamber of the first manifold receives the refrigerant flowing out of the second serpentine pipeline and sends the refrigerant out.

4. The laundry treatment device according to claim 3, wherein the inlet volume chamber is located below the outlet volume chamber.

5. The laundry treatment device according to claim 3, wherein the inlet volume chamber is located above the outlet volume chamber.

6. The laundry treatment device according to claim 1, wherein at least one of the first serpentine pipeline and the second serpentine pipeline further includes a third serpentine tube, and the third serpentine tube is connected to the first manifold and the second manifold in parallel with respect to the first serpentine tube and the second serpentine tube.

7. The laundry treatment device according to claim 1, wherein at least one of the evaporator and the condenser has, in a direction perpendicular to the windward surface, the first serpentine pipeline, the second serpentine pipeline, and a third serpentine pipeline in sequence, and the third serpentine pipeline includes the first serpentine tube and the second serpentine tube. The first manifold connects the first serpentine pipeline, the second serpentine pipeline, and the third serpentine pipeline. The second manifold connects the first serpentine pipeline, the second serpentine pipeline, and the third serpentine pipeline. The first manifold allows refrigerant to enter and distributes the refrigerant to the first serpentine pipeline, the second serpentine pipeline, and the third serpentine pipeline. The second manifold receives the refrigerant flowing out of the first serpentine pipeline, the second serpentine pipeline, and the third serpentine pipeline and sends the refrigerant out.

8. The laundry treatment device according to claim 1, wherein at least one of the evaporator and the condenser has, in a direction perpendicular to the windward surface, the first serpentine pipeline, the second serpentine pipeline, and a third serpentine pipeline in sequence, and the third serpentine pipeline includes the first serpentine tube and the second serpentine tube. The first manifold has a plurality of butt joints connected to the openings at one ends of the first serpentine tube and the second serpentine tube of the third serpentine pipeline. The second manifold has a plurality of butt joints connected to the openings at the other ends of the first serpentine tube and the second serpentine tube of the third serpentine pipeline. The first manifold has a partition that divides the internal cavity of the first manifold into an inlet volume chamber and a second intermediate volume chamber. The second manifold has a partition that divides the internal cavity of the second manifold into a first intermediate volume chamber and an outlet volume chamber. The docking port connected to the openings at one ends of the first serpentine tube and the second serpentine tube of the first serpentine pipeline is located in the inlet volume chamber. The docking port connected to the openings at the other ends of the first serpentine tube and the second serpentine tube of the third serpentine pipeline is located in the outlet volume chamber. The first intermediate volume chamber of the second manifold connects the first serpentine pipeline and the second serpentine pipeline. The second intermediate volume chamber of the first manifold connects the second serpentine pipeline and the third serpentine pipeline. The inlet volume chamber of the first manifold allows refrigerant to enter and distributes the refrigerant to the first serpentine pipeline. The first intermediate volume chamber of the second manifold receives the refrigerant flowing out of the first serpentine pipeline and sends the refrigerant to the second serpentine pipeline. The second intermediate volume chamber of the first manifold receives the refrigerant flowing out of the second serpentine pipeline and sends the refrigerant to the third serpentine pipeline. The outlet volume chamber of the second manifold receives the refrigerant flowing out of the third serpentine pipeline and sends the refrigerant out.

9. The laundry treating apparatus according to any one of claims 1 to 8, characterized in that the evaporator and the condenser are arranged in an inverted V shape.

10. The laundry treating apparatus according to any one of claims 1 to 8, characterized in that the laundry treating apparatus further has other drums on the side and / or above the heat pump assembly.

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