Clothes dryer

Abstract

The utility model provides a clothes dryer. The clothes dryer comprises a roller, a base, a cross-flow fan and a heat exchange assembly. Wherein the roller comprises a containing cavity and a pick-and-place opening, the pick-and-place opening is located in the front side of the roller and communicates with the containing cavity, and an air inlet communicating with the containing cavity is formed in the rear wall of the roller; the base is located below the roller which can rotate relative to the base. A first air duct is arranged in the base, an inlet of the first air duct communicates with the pick-and-place opening, and an outlet of the first air duct communicates with the air inlet; the cross-flow fan comprises a wind wheel and a fan motor, and at least the wind wheel is located in the first air duct; the fan motor drives the wind wheel to rotate to form airflow; the heat exchange assembly is at least partially located in the first air duct and located between the cross-flow fan and an inlet of the first air duct, and when the wind wheel rotates, airflow from the containing cavity can circulate into the containing cavity sequentially through the first air duct and the air inlet after being dehumidified and heated by the heat exchange assembly. According to the clothes dryer, the airflow flowing speed and the air volume can be increased, and the drying efficiency and the drying effect are improved.

Description

Technical Field

[0001] This application relates to the technical field of clothing treatment, and particularly to a clothes dryer. Background Art

[0002] With the continuous improvement of living standards, the traditional way of drying clothes by hanging them out to dry can no longer meet the needs. Hanging clothes to dry is greatly affected by the weather, with a slow drying speed, poor drying effect, and is prone to breeding mold, which affects the comfort and health of wearing clothes. A clothes dryer can generate dry hot air, use the hot air to take away the moisture of the clothes, and achieve the purpose of drying the clothes. This drying method is fast and has a good effect, and is deeply loved by people.

[0003] However, most current clothes dryers use axial fans to drive the air flow in the air duct, which has the disadvantages of high noise and small pressure rise, affecting the user experience.

[0004] Therefore, there is an urgent need to provide a clothes dryer to solve at least one of the above technical problems. Summary of the Invention

[0005] In view of the above problems, the embodiments of this application provide a clothes dryer that can increase the pressure rise, reduce the noise, and improve the drying efficiency and drying effect.

[0006] To achieve the above purpose, the embodiments of this application provide the following technical solutions:

[0007] The embodiments of this application provide a clothes dryer, which includes:

[0008] A drum, including a receiving cavity and a loading / unloading opening. The loading / unloading opening is located on the front side of the drum and communicates with the receiving cavity. An air inlet communicating with the receiving cavity is provided on the rear wall of the drum;

[0009] A base, located below the drum. Under the action of an external force, the drum can rotate relative to the base; a first air duct is provided in the base, the inlet of the first air duct communicates with the loading / unloading opening, and the outlet of the first air duct communicates with the air inlet;

[0010] A cross-flow fan, including a wind wheel and a fan motor. At least the wind wheel is located in the first air duct; under the action of the fan motor, the wind wheel rotates to form an air flow;

[0011] A heat exchange component, at least partially located in the first air duct and located between the cross-flow fan and the inlet of the first air duct. Under the rotation action of the wind wheel, the air flow from the receiving cavity is dehumidified and heated by the heat exchange component, and then can circulate through the first air duct and the air inlet to the receiving cavity in sequence.

[0012] Compared with the axial-flow fans in the prior art, in the cross-flow fan adopted in the embodiments of the present application, the impeller is a multi-blade long cylindrical shape, the impeller structure is more compact, and the noise is lower. Moreover, the airflow flow path inside the impeller is more complex than that of the axial-flow fan and can form a vortex, and the pressure rise is larger than that of the axial-flow fan. Therefore, adopting a cross-flow fan can increase the airflow velocity and air volume, enabling the clothes to achieve an ideal drying effect in a shorter time, improving the working efficiency of the dryer, and the lower noise interference also improves the user experience.

[0013] In some embodiments, the base includes an upper cover plate and a lower cover plate, and the upper cover plate and the lower cover plate together form the first air duct, and the cross-flow fan is installed between the upper cover plate and the lower cover plate.

[0014] In some embodiments, one end of the impeller is connected to the output shaft of the fan motor, and the other end of the impeller is connected to the lower cover plate;

[0015] The bottom of the fan motor is connected to the lower cover plate, the top of the fan motor is connected to the upper cover plate, and the fan motor is installed between the upper cover plate and the lower cover plate.

[0016] In some embodiments, the lower cover plate includes a bottom plate, and a first support wall and a second support wall protruding upward from the bottom plate. The first support wall and the second support wall are spaced apart to form the first air duct;

[0017] At least part of the heat exchange assembly, and at least the impeller in the cross-flow fan are located in the spaced space between the first support wall and the second support wall;

[0018] A notch is provided on the first support wall, the bottom of the fan motor is located in the notch of the first support wall, and the other end of the impeller is connected to the second support wall.

[0019] In some embodiments, the dryer further includes a fan bearing. The second support wall is provided with a mounting hole or a mounting notch. The fan bearing is located in the mounting hole or the mounting notch, and the other end of the fan is rotatably connected to the fan bearing.

[0020] In some embodiments, the heat exchange assembly includes: a compressor, a heat exchange pipeline, and an evaporator and a condenser arranged in sequence along the airflow direction in the first air duct;

[0021] The evaporator and the condenser are located in the first air duct. The heat exchange pipeline has a heat exchange medium inside, and the heat exchange pipeline is respectively communicated with the compressor, the evaporator and the condenser, so that the heat exchange medium circulates between the compressor, the evaporator and the condenser;

[0022] Under the combined action of the compressor and the heat exchange medium, the evaporator can absorb heat from the first air duct to dehumidify the air flow passing through the first air duct, and the condenser can release heat into the first air duct to heat the dehumidified air flow.

[0023] In some embodiments, the base includes an upper cover plate and a lower cover plate. The lower cover plate includes a bottom plate, a first support wall and a second support wall protruding upward from the bottom plate. The upper cover plate is connected above the first support wall and the second support wall to form the first air duct.

[0024] The lower cover plate further includes an extension seat horizontally extending outward from the bottom plate to the outside of the first air duct, and the compressor is mounted on the extension seat.

[0025] In some embodiments, the base further includes a waterproof cover. The waterproof cover is located in the first air duct and above the bottom plate, and at least part of the heat exchange assembly and the air wheel are mounted between the waterproof cover and the upper cover plate.

[0026] There is a drainage channel between the waterproof cover and the lower cover plate, and the liquid formed by the dehumidification of the evaporator can pass through the waterproof cover and flow into the drainage channel.

[0027] In some embodiments, the compressor is located behind the evaporator, and the compressor is located in the middle or rear of the base.

[0028] In some embodiments, the cross-flow fan is horizontally placed, and the axis of the cross-flow fan is perpendicular to the length direction of the first air duct.

[0029] The dryer further includes:

[0030] A housing having an inner cavity for accommodating the drum;

[0031] A support member mounted on the housing, and the support member is located behind the rear wall of the drum;

[0032] A rotating shaft, one end of which is connected to the rear wall of the drum;

[0033] A direct drive motor includes a stator and a rotor rotating relative to the stator. The stator is connected to the support member, and the rotor is connected to the other end of the rotating shaft; under the rotation of the rotor, the rotating shaft drives the drum to rotate.

[0034] In some embodiments, the dryer further includes a second air duct located between the support member and the rear wall of the drum. The two ends of the second air duct are respectively communicated with the air inlet and the outlet of the first air duct.

[0035] In some embodiments, the diameter of the stator is within the diameter range of the rotor, and the drum, the rotating shaft, the stator and the rotor are coaxially distributed.

[0036] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought by the technical features of these technical solutions, other technical problems that can be solved by the cleaning module, cleaning device and cleaning system provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manners. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0038] Figure 1 It is a schematic diagram of the overall structure of a clothes dryer provided by some embodiments of the present application;

[0039] Figure 2 It is a rear view of a clothes dryer provided by some embodiments of the present application;

[0040] Figure 3 For Figure 2 It is a cross-sectional view of the clothes dryer at A-A;

[0041] Figure 4 It is an exploded structural schematic diagram of a base and a heat exchange component and a cross-flow fan mounted on the base in a clothes dryer provided by some embodiments of the present application;

[0042] Figure 5 It is a structural schematic diagram of a bottom plate, a heat exchange component and a cross-flow fan assembled in a clothes dryer provided by some embodiments of the present application.

[0043] Explanation of the Reference Numerals in the Drawings:

[0044] 110, housing; 101, notch; 102, fan bearing; 103, drainage channel; 111, front cover;

[0045] 120, drum; 121, accommodation cavity; 122, access opening; 123, side wall of the drum; 124, rear wall of the drum; 1241, air inlet;

[0046] 130. Base; 131. First air duct; 132. Inlet of the first air duct; 133. Outlet of the first air duct; 134. Upper cover plate; 135. Lower cover plate; 1351. Bottom plate; 1352. Extension seat; 1353. First support wall; 1354. Second support wall; 1355. Mounting hole

[0047] 140. Heat exchange component; 141. Evaporator; 142. Condenser; 143. Compressor

[0048] 150. Direct drive motor; 151. Rotating shaft

[0049] 160. Cross-flow fan; 161. Fan motor; 162. Wind wheel

[0050] 170. Support member

[0051] 180. Waterproof cover Detailed implementation manners

[0052] To make the technical solutions and beneficial effects of the embodiments of this application more obvious and understandable, the following provides a detailed description by listing specific embodiments. Among them, the drawings are not necessarily drawn to scale, and local features can be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0053] In the description of the embodiments of this application, the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and should not be construed as a limitation to this application.

[0054] In the embodiments of this application, the terms "first" and "second" are only used for the purpose of clear description, and should not be construed as indicating the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined with "first" and "second" can clearly include at least one of such features. In the description of the embodiments of this application, the meaning of "a plurality" is at least two, such as two, three, etc.;

[0055] In the embodiments of this application, unless otherwise clearly defined, the terms "installation", "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In the embodiments of the present application, unless otherwise clearly defined, the first feature being "on" the second feature may mean that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature being "on" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature.

[0057] The following Figures 1 to 5 will be used to explain the clothes dryer according to the embodiments of the present application in detail.

[0058] The clothes dryer according to the embodiments of the present application includes: a drum 120, a base 130, a cross-flow fan 160, and a heat exchange component 140. Among them, the drum 120 includes a receiving cavity 121 and a loading and unloading opening 122. The loading and unloading opening 122 is located on the front side of the drum 120 and communicates with the receiving cavity 121. An air inlet 1241 communicating with the receiving cavity 121 is provided on the rear wall 124 of the drum 120; the base 130 is located below the drum 120. Under the action of an external force, the drum 120 can rotate relative to the base 130; a first air duct 131 is provided in the base 130. The inlet of the first air duct 131 communicates with the loading and unloading opening 122, and the outlet of the first air duct 131 communicates with the air inlet 1241; the cross-flow fan 160 includes a wind wheel 162 and a fan motor 161. At least the wind wheel 162 is located in the first air duct 131; under the action of the fan motor 161, the wind wheel 162 rotates to form an air flow; at least a part of the heat exchange component 140 is located in the first air duct 131 and is located between the cross-flow fan 160 and the inlet of the first air duct 131. Under the rotation of the wind wheel 162, the air flow from the receiving cavity 121 can be dehumidified and heated by the heat exchange component 140, and then can circulate into the receiving cavity 121 through the first air duct 131 and the air inlet 1241 in sequence.

[0059] The clothes drying process of the clothes dryer generally includes: putting the clothes to be dried into the receiving cavity 121 through the loading and unloading opening 122. Subsequently, the cross-flow fan 160 is started to drive the air flow. The wet and cold air in the receiving cavity 121 enters the first air duct 131 of the base 130 through the loading and unloading opening 122. After the air flow entering the first air duct 131 flows through the heat exchange component 140, it is dehumidified and heated by the heat exchange component 140 to form a dry hot air flow. The dry hot air flow continues to flow along the first air duct 131 and flows into the receiving cavity 121 through the outlet 133 of the first air duct 131 and the air inlet 1241 in sequence. The dry hot air flow flowing into the receiving cavity 121 will take away the moisture of the clothes and form wet and cold air again, and so on in a cycle. In order to improve the drying efficiency of the clothes, while the air flow circulates between the receiving cavity 121 and the first air duct 131, an external force drives (generally driven by a motor) the drum 120 to rotate. After the clothes are dried, the clothes are taken out of the receiving cavity 121 through the loading and unloading opening 122.

[0060] Compared with the axial-flow fan in the prior art, in the cross-flow fan 160 adopted in the embodiment of the present application, the impeller 162 is a multi-blade long cylindrical shape, the structure of the impeller 162 is more compact, and the noise is lower. Moreover, the air flow path inside the impeller 162 is more complex than that of the axial-flow fan and can form a vortex, and the pressure rise is larger than that of the axial-flow fan. Therefore, adopting the cross-flow fan 160 can increase the air flow speed and air volume, enable the clothes to reach the ideal drying effect in a shorter time, improve the working efficiency of the dryer, and the lower noise interference also improves the user experience.

[0061] Due to the use of the cross-flow fan 160, the size of the first air duct 131 in the embodiment of the present application can be increased to provide a larger air volume and improve the drying efficiency. The size includes but is not limited to: the cross-sectional area perpendicular to the length direction of the first air duct, the air duct width, and the air duct length.

[0062] For the convenience of description, in the embodiment of the present application, the position where the access opening 122 is located is defined as "front", the position where the rear wall 124 of the drum 120 is located is defined as "rear", and "left" and "right" are respectively defined based on the dryer user facing the access opening 122. The specific directions can be referred to Figure 1 as shown.

[0063] As Figure 3 shown, the drum 120 at least includes a cylindrical side wall 123 and a rear wall 124 connected to the rear side of the side wall 123, and an access opening 122 is formed on the front side of the side wall 123.

[0064] The dryer further includes a front cover 111 located on the front side of the access opening 122. After the front cover 111 is opened, the access opening 122 is exposed for taking in and out clothes. After the front cover 111 is closed as Figure 1 shown, the front cover 111 can completely cover the access opening 122 to reduce the entry of dirt from the external environment into the accommodation cavity 121 through the access opening 122 and can prevent the clothes from being thrown out of the access opening 122 during the operation of the dryer.

[0065] As Figure 3 shown, along the air flow direction in the first air duct 131, the cross-flow fan 160 is located between the first air duct outlet 133 and the heat exchange component 140, and the air flow flows out of the base 130 through the first air duct inlet 132, the heat exchange component 140, the cross-flow fan 160 and the outlet 133 of the first air duct 131 in sequence.

[0066] Please refer to the direction of the curved arrow in Figure 3 for the circulating flow path of the air flow in the dryer.

[0067] In some alternative embodiments, such as Figure 4 and Figure 5As shown, the base 130 includes an upper cover plate 134 and a lower cover plate 135. The upper cover plate 134 and the lower cover plate 135 together form a first air duct 131, and the cross-flow fan 160 is installed between the upper cover plate 134 and the lower cover plate 135.

[0068] As can be seen Figure 4 from, the upper cover plate 134 is installed above the lower cover plate 135 to ensure the sealing performance of the first air duct 131.

[0069] When installing the cross-flow fan 160, the cross-flow fan 160 can be first placed on the lower cover plate 135, and then the upper cover plate 134 is installed. After the upper cover plate 134 and the lower cover plate 135 are connected, not only the assembly of the first air duct 131 is completed, but also the installation of the cross-flow fan 160 is realized. The installation method is simple and efficient. This split installation method of the cross-flow fan 160 using two split components, the upper cover plate 134 and the lower cover plate 135, also makes the structure of the base 130 more compact.

[0070] If the dryer is Figure 1 the floor-mounted type as shown, at least the top of the lower cover plate 135 is used to form the first air duct 131, and the bottom of the lower cover plate 135 can be in contact with the support surface to realize the support of the dryer by the support surface. The support surface includes but is not limited to the ground, the surface of furniture or the surface of household appliances.

[0071] In some alternative embodiments, as Figure 4 and Figure 5 shown, one end of the impeller 162 is connected to the output shaft of the fan motor 161, and the other end of the impeller 162 is connected to the lower cover plate 135; the bottom of the fan motor 161 is connected to the lower cover plate 135, and the top of the fan motor 161 is connected to the upper cover plate 134. The fan motor 161 is installed between the upper cover plate 134 and the lower cover plate 135.

[0072] One end of the impeller 162 is indirectly fixed between the upper cover plate 134 and the lower cover plate 135 through the fan motor 161. The other end of the impeller 162 can be limited only by the lower cover plate 135, or the same fixing method as the fan motor 161 can be adopted, that is, the other end of the impeller 162 can be fixed by both the lower cover plate 135 and the upper cover plate 134 at the same time.

[0073] When installing the cross-flow fan 160, the fan motor 161 and the impeller 162 can be first assembled, and then the other end of the impeller 162 is installed on the lower cover plate 135. The fan motor 161 is placed on the lower cover plate 135, and then the upper cover plate 134 is installed to fix the fan motor 161, and further fix the entire cross-flow fan 160.

[0074] Continue to refer to Figure 5, in some alternative embodiments, the lower cover plate 135 includes a bottom plate 1351, and a first support wall 1353 and a second support wall 1354 protruding upward from the bottom plate 1351. The first support wall 1353 and the second support wall 1354 are spaced apart to form a first air duct 131; at least part of the heat exchange assembly 140, and at least the impeller 162 of the cross-flow fan 160 are located in the spaced space between the first support wall 1353 and the second support wall 1354; a notch 101 is provided on the first support wall 1353, and the bottom of the fan motor 161 is located in the notch 101 of the first support wall 1353, and the other end of the impeller 162 is connected to the second support wall 1354.

[0075] The opening of the notch 101 faces upward, and the fan motor 161 can be placed in the notch 101 from top to bottom, which simplifies the assembly operation of the fan motor 161 and the lower cover plate 135.

[0076] After the fan motor 161 is placed in the notch 101, the inner wall of the notch 101 can prevent the fan motor 161 from rolling on the lower cover plate 135, and has a limiting effect on the fan motor 161. Therefore, the notch 101 makes the connection between the fan motor 161 and the lower cover plate 135 simpler and more convenient.

[0077] The bottom plate 1351 forms the bottom wall of the first air duct 131, the first support wall 1353 and the second support wall 1354 respectively form two opposite side walls of the first air duct 131, and the upper cover plate 134 forms the top wall of the first air duct 131. As can be seen from Figure 3 it can be seen that a gap is reserved between the bottom of the impeller 162 and the bottom wall of the first air duct 131 to ensure that the air flow passes more smoothly.

[0078] Without limitation, as Figure 4 shown, the upper cover plate 134 also has a notch 101 with an opening facing downward at the relative position of the notch 101. After the upper cover plate 134 and the lower cover plate 135 are connected, the upper and lower notches 101 together form a cavity for accommodating the fan motor 161.

[0079] In some alternative embodiments, as Figure 5 shown, the dryer further includes a fan bearing 102. The second support wall 1354 is provided with a mounting hole 1355 or a mounting notch, the fan bearing 102 is located in the mounting hole 1355 or the mounting notch, and the other end of the fan is rotatably connected to the fan bearing 102.

[0080] In the embodiments illustrated in the present application, the mounting hole 1355 is a closed ring structure, the fan bearing 102 can be installed in the mounting hole 1355, and the other end of the impeller 162 is installed on the second support wall 1354 through the fan bearing 102.

[0081] Exemplarily, the other end of the wind wheel 162 has a shaft, which is inserted into the inner ring of the fan bearing 102. The outer ring of the fan bearing 102 is connected to the hole wall of the mounting hole 1355, and the inner ring can rotate relative to the outer ring.

[0082] Alternatively, in some other embodiments, both the second support wall 1354 and the upper cover plate 134 have mounting notches at their relative positions. After the upper cover plate 134 and the lower cover plate 135 are connected, the fan bearing 102 is fixed between the second support wall 1354 and the upper cover plate 134. In this implementation manner, the other end of the wind wheel 162 requires the joint cooperation of the upper cover plate 134 and the second support wall 1354 for installation.

[0083] In some alternative embodiments, as Figure 4 and Figure 5 shown, the heat exchange assembly 140 includes: a compressor 143, a heat exchange pipeline, and an evaporator 141 and a condenser 142 arranged in sequence along the air flow direction in the first air duct 131; the evaporator 141 and the condenser 142 are located in the first air duct 131, the heat exchange pipeline has a heat exchange medium therein, and the heat exchange pipeline is respectively connected to the compressor 143, the evaporator 141 and the condenser 142 so that the heat exchange medium circulates between the compressor 143, the evaporator 141 and the condenser 142; under the combined action of the compressor 143 and the heat exchange medium, the evaporator 141 can absorb heat from the first air duct 131 to dehumidify the air flow passing through the first air duct 131, and the condenser 142 can release heat to the first air duct 131 to heat the dehumidified air flow.

[0084] After the air flow enters the interior of the first air duct 131 through the first air duct inlet 132, it then flows through the evaporator 141, the condenser 142 and the wind wheel 162 in sequence.

[0085] Based on the foregoing description, the size of the first air duct 131 in the embodiment of the present application can be larger than the size of the air duct using an axial flow fan. Furthermore, the volumes of the evaporator 141 and the condenser 142 can also be larger. The larger-sized evaporator 141 and condenser 142 can more efficiently dehumidify and heat the air flow in the first air duct 131, thereby improving the drying efficiency.

[0086] The compressor 143 is connected to the evaporator 141 and the condenser 142. The working fluid (i.e., the heat exchange medium) can flow between the compressor 143, the evaporator 141, and the condenser 142 so that the heat exchange medium can absorb or release heat. Specifically, the compressor 143 compresses the low-temperature and low-pressure gas into a high-temperature and high-pressure gas and then becomes a high-temperature and medium-pressure gas-liquid coexistence substance through a throttling device. Subsequently, the heat exchange medium flowing through the condenser 142 changes from a gas to a liquid and releases heat to the surroundings, and then enters the evaporator 141 where the working fluid changes from a liquid to a gas and absorbs heat from the surroundings. Finally, it flows back into the compressor 143 to form a cycle. That is to say, the heat exchange medium can absorb heat at the evaporator 141. When the air in the air duct flows through the evaporator 141, the water vapor in the air flowing into the first air duct 131 will release heat to generate condensed water to dry the air, and the evaporator 141 can process the air flow into low-temperature and dry air. The heat exchange medium releases heat at the condenser 142. When the air flow after drying treatment flows through the condenser 142, the heat released at the condenser 142 can heat the air flow, thereby forming a dry and high-temperature air flow, and the dry and high-temperature air is used to dry clothes.

[0087] In some embodiments, such as Figure 4 and Figure 5 shown, on the basis of the foregoing, the lower cover plate 135 further includes an extension seat 1352 that horizontally extends outward from the bottom plate 1351 to the first air duct 131, and the compressor 143 is installed on the extension seat 1352. The compressor 143 is installed on the extension seat 1352, so that the compressor 143 makes full use of the horizontal space of the base 130. The compressor 143 and the base 130 are not placed vertically, and thus the height of the dryer is not increased.

[0088] In Figure 4 and Figure 5 the implementation manner shown, the axis of the compressor 143 is parallel to the vertical direction, and the compressor 143 is located on the side of the condenser 142. This layout is more compact.

[0089] In some embodiments, such as Figure 3 shown, the base 130 further includes: a waterproof cover 180. The waterproof cover 180 is located in the first air duct 131 and above the bottom plate 1351. At least part of the heat exchange assembly 140 and the air wheel 162 are installed between the waterproof cover 180 and the upper cover plate 134; there is a drainage channel 103 between the waterproof cover 180 and the lower cover plate 135, and the liquid formed by the dehumidification of the evaporator 141 can pass through the waterproof cover 180 and flow into the drainage channel 103.

[0090] In the embodiment, the cross-flow fan 160 may not be provided with a protective housing. In some other embodiments, a protective housing may also be provided outside the cross-flow fan 160.

[0091] Such as Figure 4 and Figure 5As shown, both the evaporator 141 and the condenser 142 are located in the first air duct 131. The waterproof cover 180 is provided with an installation area for carrying the evaporator 141 and the condenser 142. The spaced space between the bottom of the lower cover plate 135 and the waterproof cover 180 forms a drainage channel 103, so that the condensed water formed by the evaporator 141 condensing the air flow in the first air duct 131 enters the drainage channel 103. The water in the drainage channel 103 can be collected in a water storage box or directly discharged into the sewer through a pipe.

[0092] Water passing holes can be provided on the waterproof cover 180, or the water passing holes are formed by the gap between the waterproof cover 180 and the lower cover plate 135. The water passing holes communicate with the drainage channel 103. The condensed water generated in the first air duct 131 flows into the drainage channel 103 through the water passing holes.

[0093] In the embodiments shown in the present application, as Figure 4 and Figure 5 shown, the compressor 143 is located in the middle of the base 130. In some other embodiments, the compressor 143 is located at the rear of the base 130. The compressor 143 being set further back can be further away from the user, which is beneficial to further reducing noise.

[0094] As Figure 4 and Figure 5 shown, the cross-flow fan 160 is horizontally placed, and the axis of the cross-flow fan 160 is perpendicular to the length direction of the first air duct 131. This way of the cross-flow fan 160 can ensure a greater air output.

[0095] In the implementation manner shown in the present application, the wind wheel 162 is coaxial with the fan motor 161. The wind wheel 162 is horizontally placed in the first air duct 131, and the air flow passes through the wind wheel 162 substantially along the axial direction parallel to the wind wheel 162.

[0096] In some alternative embodiments, the dryer further includes: a housing 110, a support member 170, a rotating shaft 151, and a direct drive (DD) motor 150. The housing 110 has an inner cavity for accommodating the drum 120; the support member 170 is installed on the housing 110, and the support member 170 is located behind the rear wall 124 of the drum 120; one end of the rotating shaft 151 is connected to the rear wall 124 of the drum 120; the direct drive motor 150 includes a stator and a rotor that rotates relative to the stator. The stator is connected to the support member 170, and the rotor is connected to the other end of the rotating shaft 151; under the rotation of the rotor, the rotating shaft 151 drives the drum 120 to rotate.

[0097] As Figure 3As shown, the casing 110 is at least used to form the exterior part of the dryer, and the support member 170 is also located in the inner cavity of the casing 110 and is installed on the casing 110. The support member 170 can serve as the installation carrier for the direct drive motor 150 and the drum 120. It can be understood that in order to improve the stability of the drum 120 and ensure that the drum 120 can also be stable and reliable during rotation, a support structure can also be provided on the front side of the drum 120.

[0098] In the prior art, the motor for driving the drum 120 to rotate is installed on the base 130, while in the embodiment of the present application, the direct drive motor 150 is installed on the support member 170, located behind the drum 120, and does not need to be installed on the base 130, saving space for the base 130. This part of the saved space provides further possibility for increasing the size of the first air duct 131. Moreover, the direct drive motor 150 does not need to transmit driving external force to the drum 120 through transmission mechanisms such as belts, has a more compact structure, can also reduce power loss, and is more convenient for controlling the rotation effect of the drum 120.

[0099] The support member 170 can be a sheet metal part, but is not limited thereto.

[0100] In some alternative embodiments, the dryer further includes a second air duct located between the support member 170 and the rear wall 124 of the drum 120. The two ends of the second air duct are respectively communicated with the air inlet 1241 and the outlet 133 of the first air duct 131.

[0101] The second air duct is located behind the drum 120 to more smoothly guide the air flow flowing out of the first air duct 131 into the accommodation cavity 121 inside the drum 120.

[0102] In some embodiments, a third air duct can also be provided in front of the drum 120. The third air duct communicates the access opening 122 and the inlet 132 of the first air duct 131.

[0103] Without limitation, the direct drive motor 150 in the embodiment of the present application is an outer rotor motor, that is, the diameter of the stator is within the diameter range of the rotor.

[0104] In some alternative embodiments, the drum 120, the rotating shaft 151, the stator and the rotor are coaxially distributed. The embodiment of the present application adopts an outer rotor direct drive motor 150, so that the coaxiality of the direct drive motor 150 and the drum 120 can be improved, and the stability and reliability of the rolling rotation can be improved.

[0105] Among them, other structures and working principles of the dryer can adopt the solutions of the prior art and will not be elaborated here.

[0106] In this specification, the embodiments or implementation manners are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0107] In the description of this specification, the descriptions referring to "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0108] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A clothes dryer, characterized in that, The clothes dryer includes: A drum, including a receiving cavity and a loading / unloading opening. The loading / unloading opening is located on the front side of the drum and communicates with the receiving cavity. An air inlet communicating with the receiving cavity is provided on the rear wall of the drum; A base, located below the drum. Under the action of an external force, the drum can rotate relative to the base. A first air duct is provided in the base. The inlet of the first air duct communicates with the loading / unloading opening, and the outlet of the first air duct communicates with the air inlet; A cross-flow fan, including an impeller and a fan motor. At least the impeller is located in the first air duct. Under the action of the fan motor, the impeller rotates to form an air flow; A heat exchange component, at least part of which is located in the first air duct and between the cross-flow fan and the inlet of the first air duct. Under the rotation of the impeller, the air flow from the receiving cavity is dehumidified and heated by the heat exchange component and then can circulate into the receiving cavity through the first air duct and the air inlet in sequence.

2. The dryer according to claim 1, characterized in that, The base includes an upper cover plate and a lower cover plate. The upper cover plate and the lower cover plate jointly form the first air duct, and the cross-flow fan is installed between the upper cover plate and the lower cover plate.

3. The dryer according to claim 2, characterized in that, One end of the impeller is connected to the output shaft of the fan motor, and the other end of the impeller is connected to the lower cover plate; The bottom of the fan motor is connected to the lower cover plate, and the top of the fan motor is connected to the upper cover plate. The fan motor is installed between the upper cover plate and the lower cover plate.

4. The dryer according to claim 3, characterized in that, The lower cover plate includes a bottom plate, and a first support wall and a second support wall protruding upward from the bottom plate. The first support wall and the second support wall are spaced apart to form the first air duct; At least part of the heat exchange component and at least the impeller of the cross-flow fan are located in the spaced space between the first support wall and the second support wall; A notch is provided on the first support wall. The bottom of the fan motor is located in the notch of the first support wall, and the other end of the impeller is connected to the second support wall.

5. The dryer according to claim 4, characterized in that, The clothes dryer further includes a fan bearing. The second support wall is provided with a mounting hole or a mounting notch. The fan bearing is located in the mounting hole or the mounting notch, and the other end of the fan is rotatably connected to the fan bearing.

6. The clothes dryer according to claim 1, characterized in that, The heat exchange component includes: a compressor, a heat exchange pipeline, and an evaporator and a condenser arranged in sequence along the air flow direction in the first air duct; The evaporator and the condenser are located in the first air duct. A heat exchange medium is provided in the heat exchange pipeline. The heat exchange pipeline communicates with the compressor, the evaporator, and the condenser respectively, so that the heat exchange medium circulates among the compressor, the evaporator, and the condenser; Under the combined action of the compressor and the heat exchange medium, the evaporator can absorb heat from the first air duct to dehumidify the air flow flowing through the first air duct, and the condenser can release heat into the first air duct to heat the dehumidified air flow.

7. The dryer according to claim 6, characterized in that, The base includes an upper cover plate and a lower cover plate. The lower cover plate includes a bottom plate, a first support wall and a second support wall protruding upward from the bottom plate. The upper cover plate is connected above the first support wall and the second support wall to form the first air duct. The lower cover plate further includes an extension seat extending horizontally outward from the bottom plate to the outside of the first air duct. The compressor is installed on the extension seat.

8. The dryer according to claim 7, characterized in that, The base further includes a waterproof cover. The waterproof cover is located in the first air duct and above the bottom plate. At least part of the heat exchange component and the air wheel are installed between the waterproof cover and the upper cover plate. There is a drainage channel between the waterproof cover and the lower cover plate. The liquid formed by the dehumidification of the evaporator can pass through the waterproof cover and flow into the drainage channel.

9. The dryer according to claim 7, characterized in that, The compressor is located in the middle or at the rear of the base.

10. The dryer according to any one of claims 1 to 9, characterized in that, The cross-flow fan is placed horizontally, and the axis of the cross-flow fan is perpendicular to the length direction of the first air duct.

11. The dryer according to any one of claims 1 to 9, characterized in that, The dryer further includes: a housing having an inner cavity for accommodating the drum; a support member installed on the housing, and the support member is located behind the rear wall of the drum; a rotating shaft, one end of which is connected to the rear wall of the drum; a direct drive motor including a stator and a rotor rotating relative to the stator. The stator is connected to the support member, and the rotor is connected to the other end of the rotating shaft. Under the rotation of the rotor, the rotating shaft drives the drum to rotate.

12. The dryer according to claim 11, characterized in that, The dryer further includes a second air duct located between the support member and the rear wall of the drum. The two ends of the second air duct are respectively communicated with the air inlet and the outlet of the first air duct.

13. The dryer according to claim 12, characterized in that, The diameter of the stator is within the diameter range of the rotor, and the drum, the rotating shaft, the stator and the rotor are coaxially distributed.

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