Clothes dryer

Abstract

The utility model provides a clothes dryer. The clothes dryer comprises a roller, a base, a fan and a heat exchange assembly. Wherein the roller comprises an accommodating cavity and a pick-and-place opening, and the pick-and-place opening is communicated with the accommodating cavity; the base is located below the roller, and the roller can rotate relative to the base under the action of external force. A first air duct is arranged in the base; an inlet and an outlet of the first air duct communicate with the accommodating cavity; the fan comprises a wind wheel and a fan motor, and 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 airflow which circularly flows between the first air duct and the accommodating cavity; the heat exchange assembly comprises an evaporator and a condenser which are sequentially arranged in the flowing direction of airflow in the first air duct, the evaporator can absorb heat from the first air duct so as to dehumidify the airflow flowing through the first air duct, and the condenser can release heat into the first air duct so as to heat the airflow; and the air duct width of the evaporator is greater than that of the condenser. According to the clothes dryer, the size of the evaporator can be increased, and the drying efficiency is improved.

Description

Technical Field

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

[0002] With the development of science and technology and the improvement of living standards, the traditional way of drying clothes by hanging them out to dry can no longer meet the needs due to reasons such as slow drying speed and poor drying effect. A clothes dryer can generate dry hot airflows, use the hot airflows to take away the moisture of the clothes, and achieve the purpose of drying the clothes. This way of drying clothes is fast and has a good effect, and clothes dryers have become more and more popular.

[0003] In current clothes dryers, the width of the air duct is approximately equal at different positions in the airflow path, the lengths of the evaporator and the condenser are basically equal, and their lengths are both matched with the width of the air duct, so as to make full use of the width of the air duct as much as possible and maximize the sizes of the evaporator and the condenser configured in the clothes dryer. However, limited by the width of the air duct, the sizes of the evaporator and the condenser still cannot meet the requirements.

[0004] Moreover, existing clothes dryers also have other problems such as tortuous air ducts that lead to poor drying efficiency, reducing the user experience.

[0005] 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

[0006] In view of the above problems, the embodiments of this application provide a clothes dryer that can increase the size of the evaporator. A larger-sized evaporator can improve the dehumidification effect on the airflow flowing through the first air duct, and thus improve the drying efficiency.

[0007] To achieve the above object, the embodiments of this application provide the following technical solutions:

[0008] The embodiments of this application provide a clothes dryer, which includes:

[0009] A drum, including a receiving cavity and a loading / unloading opening, and the loading / unloading opening is communicated with the receiving cavity;

[0010] 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; both the inlet and the outlet of the first air duct are communicated with the receiving cavity;

[0011] A fan, including a wind wheel and a fan motor, and 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 airflow that circulates between the first air duct and the receiving cavity;

[0012] The heat exchange component includes an evaporator and a condenser arranged in sequence along the airflow direction in the first air duct. The evaporator can absorb heat from the airflow in the first air duct to dehumidify the airflow passing through the first air duct, and the condenser can release heat into the first air duct to heat the airflow.

[0013] The width of the air duct where the evaporator is located is greater than the width of the air duct where the condenser is located.

[0014] In the embodiment of the present application, at least the width of the air duct where the evaporator is located is greater than the width of the air duct where the condenser is located. That is to say, compared with the air duct with the same width in the prior art, the width of the first air duct at the location of the evaporator is enlarged in the embodiment of the present application, so that the width of the air duct where the evaporator is located is greater than the width of the air duct where the condenser is located. Furthermore, a larger evaporator can be placed in the first air duct, and the larger-sized evaporator has a better condensation effect on the airflow, which can improve the dehumidification effect on the airflow passing through the first air duct, thereby improving the drying efficiency, saving the drying time, and reducing the drying energy consumption.

[0015] In some embodiments, the length directions of both the evaporator and the condenser are parallel to the width direction of the first air duct, and the length of the evaporator is 10% - 30% longer than the length of the condenser.

[0016] In some embodiments, the wind wheel is horizontally placed, and the axial direction of the wind wheel is arranged along the width direction of the first air duct;

[0017] The projection of the wind wheel towards the outlet of the first air duct is located within the outlet range of the first air duct.

[0018] In some embodiments, the width of the air duct where the condenser is located is greater than the width of the air duct where the blower is located.

[0019] In some embodiments, the outlet of the first air duct is square, the width of the first air duct is greater than or equal to the outer diameter of the wind wheel, and the length of the first air duct is greater than or equal to the axial length of the wind wheel.

[0020] In some embodiments, the area of the inlet of the first air duct is equal to the cross-sectional area of the evaporator.

[0021] In some embodiments, in the projection of the base along the extending direction of the first air duct, the inlet and the outlet of the first air duct at least partially overlap.

[0022] In some embodiments, the left wall, the top wall, and at least part of the bottom wall of the first air duct are linear, so that at least part of the airflow flow path in the first air duct is linear.

[0023] In some embodiments, the length direction of the first air duct is parallel to the axial direction of the drum.

[0024] In some embodiments, the heat exchange assembly further includes: a compressor and a heat exchange pipeline. The compressor is located outside the first air duct and is installed on the base in parallel with the condenser in the horizontal direction.

[0025] The heat exchange pipeline contains a heat exchange medium. The heat exchange pipeline is respectively connected to 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 passing through the first air duct, and the condenser can release heat into the first air duct to heat the air flow passing through the first air duct.

[0026] In some embodiments, the fan is a cross-flow fan.

[0027] In some embodiments, the dryer further includes:

[0028] A housing having an inner cavity for accommodating the drum.

[0029] A support member installed on the housing, and the support member is located behind the rear wall of the drum.

[0030] A rotating shaft, one end of which is connected to the rear wall of the drum.

[0031] A direct-drive motor includes a stator and a rotor that rotates 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.

[0032] In some embodiments, the rear wall of the drum has an air inlet.

[0033] 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 connected to the air inlet and the outlet of the first air duct.

[0034] 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.

[0035] 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 equipment 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. Brief Description of the Drawings

[0036] 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 use in 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 also be obtained based on these drawings.

[0037] Figure 1 Schematic diagram of the overall structure of the dryer provided by some embodiments of the present application;

[0038] Figure 2 Vertical sectional view of the dryer provided by some embodiments of the present application;

[0039] Figure 3 Vertical sectional view of the base in the dryer provided by some embodiments of the present application;

[0040] Figure 4 Top view of the internal structure of the base in the dryer provided by some embodiments of the present application.

[0041] Description of the reference numerals:

[0042] 110, housing;

[0043] 120, drum; 121, accommodation cavity; 122, access opening; 123, side wall of the drum; 124, rear wall of the drum; 1241, air inlet;

[0044] 130, base; 131, first air duct; 132, inlet of the first air duct; 133, outlet of the first air duct;

[0045] 140, heat exchange component; 141, evaporator; 142, condenser; 143, compressor;

[0046] 150, direct drive motor; 151, rotating shaft;

[0047] 160, fan; 161, fan motor; 162, impeller;

[0048] 170, support member. Detailed Embodiments

[0049] In order to make the technical solutions and beneficial effects of the embodiments of the present application more obvious and understandable, the following will be described in detail 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 the present application belongs.

[0050] In the description of the embodiments of the present application, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical (or upright)", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and should not be construed as a limitation on the present application.

[0051] In the embodiments of the present 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" may clearly include at least one of such features. In the description of the embodiments of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc.

[0052] In the embodiments of the present application, unless otherwise clearly defined, terms such as "installed", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may also be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0053] In the embodiments of the present application, unless otherwise clearly defined, the first feature being "on" the second feature may be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature.

[0054] The following Figures 1 to 4 will be used to describe the clothes dryer according to the embodiments of the present application in detail.

[0055] As Figures 1 to 4As shown in the figure, the dryer according to the embodiment of the present application includes: a drum 120, a base 130, a 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, and the loading and unloading opening 122 communicates with the receiving cavity 121; the base 130 is located below the drum 120, and 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; both the inlet 132 and the outlet 133 of the first air duct 131 communicate with the receiving cavity 121; the fan 160 includes a wind wheel 162 and a fan motor 161, and 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 circulating between the first air duct 131 and the receiving cavity 121; the heat exchange component 140 includes an evaporator 141 and a condenser 142 arranged in sequence along the air flow direction in the first air duct 131. 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 air flow; As Figure 4 shown, the width of the air duct at the position where the evaporator 141 is located ( Figure 4 at the position approximately indicated by A in the figure) is greater than the width of the air duct at the position where the condenser 142 is located ( Figure 4 at the position approximately indicated by B in the figure).

[0056] The drying process of the dryer generally includes: putting the clothes to be dried into the receiving cavity 121 through the loading and unloading opening 122. Subsequently, the 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 passes through the evaporator 141, it is dehumidified by the evaporator 141. The dehumidified air flow then passes through the condenser 142 and is heated by the condenser 142 to form a dry hot air flow. The dry hot air flow flows along the first air duct 131 and successively enters the receiving cavity 121 through the outlet 133 and the air inlet 1241 of the first air duct 131. 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.

[0057] As Figure 2 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. The front side of the side wall 123 forms the loading and unloading opening 122, and a plurality of air inlets 1241 communicating with the receiving cavity 121 are distributed on the rear wall 124.

[0058] For convenience of description, in the embodiments 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 user of the dryer facing the access opening 122. The specific directions can be referred to Figure 1 as shown.

[0059] In the embodiments of the present application, the width of the air duct at least at the position where the evaporator 141 is located is greater than the width of the air duct at the position where the condenser 142 is located. That is to say, compared with the air duct with the same width in the prior art, in the embodiments of the present application, at least the width of the first air duct 131 at the position where the evaporator 141 is located is enlarged, so that the width of the air duct at the position where the evaporator 141 is located is greater than the width of the air duct at the position where the condenser 142 is located. Furthermore, a larger evaporator 141 can be placed in the first air duct 131. The larger-sized evaporator 141 has a better condensation effect on the air flow, can improve the dehumidification effect on the air flow flowing through the first air duct 131, and thus improve the drying efficiency, save the drying time, and reduce the drying energy consumption.

[0060] In some embodiments, the blower 160 is a cross-flow blower. Compared with the axial-flow blower in the prior art, in the cross-flow blower adopted in the embodiments 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 in the impeller 162 is more complex than that of the axial-flow blower and can form a vortex, and the pressure rise is greater than that of the axial-flow blower. Therefore, adopting a cross-flow blower can increase the air flow velocity and air volume, enable the clothes to reach an ideal drying effect in a shorter time, improve the working efficiency of the dryer, and the lower noise interference also improves the use experience.

[0061] Due to the use of a cross-flow blower, the size of the first air duct 131 in the embodiments of the present application can be larger 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] In some embodiments, as Figure 4 shown, the length direction of the evaporator 141 and the length direction of the condenser 142 are both parallel to the width direction of the first air duct 131, so as to occupy the width dimension of the first air duct 131 as much as possible and maximize the sizes of the evaporator 141 and the condenser 142. Exemplarily, the length of the evaporator 141 is 10% - 30% longer than the length of the condenser 142. For example: the length of the evaporator 141 is 10%, 15%, 20%, 25%, 30% longer than the length of the condenser 142. The longer evaporator 141 has a better condensation effect on the air flow flowing through the first air duct 131.

[0063] It can be understood that since the length of the evaporator 141 is approximately equal to the width of the air duct at its location, the width of the air duct at the location of the evaporator 141 is greater than the width of the air duct at the location of the condenser 142 by approximately 10% to 30%.

[0064] In some embodiments, referring to Figure 2 As shown, the wind wheel 162 is horizontally placed, and the axial direction of the wind wheel 162 is set along the width direction of the first air duct 131; the projection of the wind wheel 162 towards the outlet 133 of the first air duct 131 is within the range of the outlet 133 of the first air duct 131. In this way, the area of the outlet 133 of the first air duct 131 is not less than the cross-sectional area of the wind wheel 162, which can ensure that the outlet 133 of the first air duct 131 is large enough to increase the air flow rate blown into the accommodation cavity 121, thereby improving the drying efficiency. Here, the cross-sectional area of the wind wheel 162 can be understood as the cross-sectional area perpendicular to the length direction of the first air duct 131, which is also the vertical cross-sectional area and is approximately perpendicular to the horizontal direction.

[0065] In some embodiments, as Figure 4 shown, the width of the air duct at the location of the condenser 142 is greater than the width of the air duct at the location of the fan 160 (i.e., Figure 4 the position indicated by C in

[0066] where the fan 160 is horizontally installed). In other words, the length of the condenser 142 is greater than or equal to the axial length of the fan 160. In the prior art, since the width at different positions of the first air duct 131 is basically equal, the dimension of the fan 160 along the width direction of the first air duct 131 is also approximately equal to that of the condenser 142. However, in the embodiments of the present application, the width of the first air duct 131 at the location of the condenser 142 is enlarged, so that the size of the condenser 142 is also increased, and the heating effect of the condenser 142 on the air flow flowing through the first air duct 131 is better.

[0067] In some embodiments, the outlet 133 of the first air duct 131 is square, the width of the first air duct 131 is greater than or equal to the outer diameter of the wind wheel 162, and the length of the first air duct 131 is greater than or equal to the axial length of the wind wheel 162. In this way, the area of the outlet 133 of the first air duct 131 can be made larger, so that the air flow blown by the wind wheel 162 can flow through the outlet 133 of the first air duct 131 to the accommodation cavity 121 as evenly as possible, ensuring the air flow rate.

[0068] In some embodiments, the area of the inlet 132 of the first air duct 131 is approximately equal to the cross-sectional area of the evaporator 141. In this way, the area of the inlet 132 of the first air duct 131 can be made larger, which is beneficial to increasing the air flow rate entering the first air duct 131.

[0069] The cross-sectional area of the evaporator 141 can be understood as the cross-sectional area perpendicular to the length direction of the first air duct 131, which is also the vertical cross-sectional area and is substantially perpendicular to the horizontal direction.

[0070] In some embodiments, as Figure 3 shown, in the projection of the base 130 along the extension direction of the air duct, the inlet 132 and the outlet 133 of the first air duct 131 at least partially overlap. That is to say, the inlet 132 and the outlet 133 of the first air duct 131 are substantially on the same straight line. Such a setting can reduce the bending degree of the first air duct 131 and reduce the air volume loss when the air flows in the first air duct 131.

[0071] Figure 3 The flow direction of the air flow in the first air duct 131 is from front to back.

[0072] In some embodiments, as Figure 3 and Figure 4 shown, the left wall, the top wall and at least part of the bottom wall of the first air duct 131 are linear, so that at least part of the air flow path in the first air duct 131 is linear.

[0073] Continuing to refer to Figure 3 and Figure 4 shown, in the embodiments illustrated in the present application, the curvature change of the right wall of the first air duct 131 is relatively large. Compared with the right wall, the curvature change of the left wall, the top wall and at least part of the bottom wall of the first air duct 131 is relatively small. Therefore, it is considered that the left wall, the top wall and at least part of the bottom wall of the first air duct 131 are linear. If at least one of the left wall, the top wall and part of the bottom wall of the first air duct 131 has a slight bend, the degree of this bend has a relatively small impact on changing the air flow path, and most of the air flow path in the front-back direction is still linear. At this time, the left wall, the top wall and at least part of the bottom wall of the first air duct 131 can also be understood as being linear as a whole.

[0074] The first air duct 131 with such a shape in the embodiments of the present application can reduce the resistance during the air flow. Compared with the zigzag air duct, the linear first air duct 131 can provide a larger air volume and a faster air speed, which is beneficial to improving the drying efficiency.

[0075] Without limitation, the length direction of the first air duct 131 is substantially parallel to the axis of the drum 120.

[0076] In some embodiments, the heat exchange assembly 140 further includes: a compressor 143 and a heat exchange pipeline. The compressor 143 is located outside the first air duct 131 and is installed on the base 130 side by side with the condenser 142 in the horizontal direction; the heat exchange pipeline contains a heat exchange medium, and the heat exchange pipeline is respectively connected to 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 flowing through the first air duct 131, and the condenser 142 can release heat into the first air duct 131 to heat the air flowing through the first air duct 131.

[0077] 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 medium 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. 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.

[0078] In some embodiments, the dryer further includes a housing 110, a support member 170, a rotating shaft 151 and a direct drive 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 of the drum 120; one end of the rotating shaft 151 is connected to the rear wall 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.

[0079] The housing 110 is at least used to form the exterior part of the dryer. The support member 170 is also located in the inner cavity of the housing 110 and is installed on the housing 110. The support member 170 can be used as the installation carrier of 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.

[0080] In the prior art, the motor that drives the rotation of the drive roller 120 is installed on the base 130, while the direct drive motor 150 in the embodiments of the present application is installed on the support member 170 and does not need to be installed on the base 130, saving space for the base 130. This 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 roller 120 through a transmission mechanism such as a belt, has a more compact structure, can also reduce power loss, and is more convenient for controlling the rotation effect of the roller 120.

[0081] The support member 170 can be a sheet metal part, but is not limited thereto.

[0082] In some embodiments, the dryer further includes a second air duct located between the support member 170 and the rear wall of the roller 120. The two ends of the second air duct are respectively communicated with the air inlet 1241 on the rear wall of the roller 120 and the outlet of the first air duct 131.

[0083] The second air duct is located behind the roller 120 to more smoothly guide the air flow flowing out of the first air duct 131 into the accommodation cavity 121 inside the roller 120.

[0084] In some embodiments, the diameter of the stator is within the diameter range of the rotor, and the roller 120, the rotating shaft 151, the stator and the rotor are coaxially distributed. This can improve the coaxiality of the direct drive motor 150 and the roller 120, and improve the stability and reliability of the rolling rotation.

[0085] Among them, the other structures and working principles of the dryer can adopt the solutions of the prior art and will not be elaborated here.

[0086] The embodiments or implementation manners in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0087] In the description of this specification, the descriptions referring to "one implementation manner", "some implementation manners", "schematic implementation manners", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials or characteristics described in combination with the implementation manner or example are included in at least one implementation manner or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same implementation manner or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more implementation manners or examples.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present 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 described 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 the present application.

Claims

1. A dryer, characterized in that, The dryer includes: A drum, including a receiving cavity and a loading / unloading opening, and the loading / unloading opening communicates with the receiving cavity; A base, located below the drum, and under the action of an external force, the drum can rotate relative to the base; a first air duct is provided in the base; both the inlet and the outlet of the first air duct communicate with the receiving cavity; A blower, including a wind wheel and a blower motor, and at least the wind wheel is located in the first air duct; under the action of the blower motor, the wind wheel rotates to form an air flow circulating between the first air duct and the receiving cavity; A heat exchange assembly, including an evaporator and a condenser arranged in sequence along the air flow direction in the first air duct, 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 air flow; The width of the air duct at the position where the evaporator is located is greater than the width of the air duct at the position where the condenser is located.

2. The dryer according to claim 1, characterized in that, The length directions of both the evaporator and the condenser are parallel to the width direction of the first air duct, and the length of the evaporator is 10% - 30% longer than the length of the condenser.

3. The dryer according to claim 1, wherein, The wind wheel is horizontally placed, and the axial direction of the wind wheel is arranged along the width direction of the first air duct; The projection of the wind wheel towards the outlet of the first air duct is located within the range of the outlet of the first air duct.

4. The dryer according to claim 2, characterized in that, The width of the air duct at the position where the condenser is located is greater than the width of the air duct at the position where the blower is located.

5. The dryer according to claim 1, wherein, The outlet of the first air duct is square, the width of the first air duct is greater than or equal to the outer diameter of the wind wheel, and the length of the first air duct is greater than or equal to the axial length of the wind wheel.

6. The dryer according to claim 1, wherein The area of the inlet of the first air duct is equal to the cross-sectional area of the evaporator.

7. The dryer according to claim 1, characterized in that, In the projection of the base along the extending direction of the first air duct, at least part of the inlet of the first air duct and the outlet of the first air duct overlap.

8. The dryer according to claim 1, characterized in that, The left wall, the top wall and at least part of the bottom wall of the first air duct are straight, so that at least part of the air flow path in the first air duct is straight.

9. The dryer according to claim 8, characterized in that, The length direction of the first air duct is parallel to the axial direction of the drum.

10. The dryer according to claim 1, characterized in that, The heat exchange assembly further includes: a compressor and a heat exchange pipeline, the compressor is located outside the first air duct, and is horizontally installed on the base side by side with the condenser; The heat exchange pipeline has a heat exchange medium therein, and the heat exchange pipeline communicates with the compressor, the evaporator and the condenser respectively. 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 air flow passing through the first air duct.

11. The dryer according to any one of claims 1 to 10, characterized in that, The blower is a cross-flow blower.

12. The clothes dryer according to any one of claims 1 to 10, characterized in that, The dryer further includes: A housing, having an inner cavity for accommodating the drum therein; 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; The direct drive motor includes a stator and a rotor that rotates 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.

13. The dryer according to claim 12, characterized in that, The rear wall of the drum has an air inlet. 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.

14. The dryer according to claim 13, 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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