Clothes dryer

Abstract

The utility model provides a clothes dryer. The clothes dryer comprises a roller, a supporting piece, a direct drive motor and a rotating shaft. The roller comprises a containing cavity and a taking and placing opening located in the front side of the roller, and the taking and placing opening communicates with the containing cavity. The supporting piece is located behind the rear wall of the roller. The direct drive motor comprises a stator and a rotor capable of rotating relative to the stator, and the stator is directly connected to the supporting piece. One end of the rotating shaft is connected to the rotor, and the other end of the rotating shaft is connected to the rear wall of the roller; under the rotation effect of the rotor, the rotating shaft drives the roller to rotate. The direct drive motor of the clothes dryer drives the roller to rotate in a direct drive mode, and operation of the roller can be controlled more efficiently and stably.

Description

Technical Field

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

[0002] A clothes dryer uses dry hot air flow to take away the moisture of the clothes in the drum, so as to achieve the purpose of drying the clothes. This drying method is fast and has good effect, making clothes dryers more and more popular.

[0003] In the prior art, a belt drive is used between the motor driving the drum to rotate and the drum. The belt is easily damaged, and it is also easy to increase energy consumption. Moreover, problems such as noise and heat generation are likely to occur during the transmission process, reducing the service life of the clothes dryer. In addition, a safety distance needs to be left around the belt to prevent interference, resulting in waste of space. Summary of the Invention

[0004] In view of the above problems, the embodiments of the present application provide a clothes dryer, which can directly drive the drum to rotate and can control the operation of the drum more efficiently and stably.

[0005] In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0006] The embodiments of the present application provide a clothes dryer, which includes:

[0007] A drum, including a receiving cavity and a pick-up and drop port located on the front side of the drum, and the pick-up and drop port is communicated with the receiving cavity;

[0008] A support member, located behind the rear wall of the drum;

[0009] A direct drive motor, including a stator and a rotor rotatable relative to the stator, and the stator is directly connected to the support member;

[0010] A rotating shaft, installed on the support member, one end of the rotating shaft is connected to the rotor, and the other end of the rotating shaft is connected to the rear wall of the drum; under the action of the rotation of the rotor, the rotating shaft drives the drum to rotate.

[0011] In the embodiments of the present application, the rotor of the direct drive motor drives the drum to rotate. The rotor does not need to be driven by a transmission mechanism such as a belt, so that the rotor and the drum can be coaxially arranged. This direct drive method for driving the drum to rotate can control the operation of the drum more efficiently and stably. Since there is no transmission mechanism such as a belt, the power loss of the rotor is reduced, which has the effect of energy saving and noise reduction. Moreover, it can also reduce the space occupied by the transmission mechanism in the clothes dryer, making the structure of the clothes dryer more compact.

[0012] Moreover, the rotating shaft is an integral component. Using the same rotating shaft to connect the drum and the rotor respectively can further ensure the coaxiality of the drum and the direct drive motor and improve the stability of the drum rotation.

[0013] In some embodiments, at least a part of the surface of the stator on the side opposite to the support member abuts against the support member, so that the stator is directly connected to the support member.

[0014] In some embodiments, the dryer further includes a first fastener;

[0015] The stator is provided with a plurality of first mounting holes, and the support member is provided with a plurality of second mounting holes. The first fastener passes through the first mounting holes and the corresponding second mounting holes to directly connect the stator to the support member.

[0016] In some embodiments, the manner in which the stator is directly connected to the support member includes at least one of the following: welding, riveting, and snap connection.

[0017] In some embodiments, along the axial direction of the drum, the support member is located between the rear wall of the drum and the direct drive motor. The support member has a through hole, and the rotating shaft passes through the through hole.

[0018] In some embodiments, the dryer further includes:

[0019] A bearing seat, connected to the support member;

[0020] Bearings, which are in interference fit with the rotating shaft and the bearing seat respectively. The rotating shaft can rotate relative to the bearing seat through the bearings.

[0021] In some embodiments, the dryer further includes a second fastener;

[0022] Both the bearing seat and the support member are provided with a plurality of third mounting holes. The second fastener passes through the third mounting holes to mount the bearing seat on the support member.

[0023] In some embodiments, the dryer further includes a positioning structure, which is located between the bearing seat and the support member to position the bearing seat and the support member and improve the coaxiality of the bearing and the through hole.

[0024] In some embodiments, the direct drive motor, the rotating shaft, and the through hole are coaxially distributed.

[0025] In some embodiments, the rotating shaft includes:

[0026] A shaft body, one end of which passes through the support member and is connected to the rotor;

[0027] A shaft seat, connected to the other end of the shaft body. The shaft seat protrudes axially from the shaft body, and the shaft seat is mounted on the rear wall of the drum.

[0028] In some embodiments, the shaft seat is riveted to the rear wall of the drum.

[0029] In some embodiments, the shaft body is splined to the rotor.

[0030] 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 dryer 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

[0031] 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, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 Schematic diagram of the internal structure of a dryer provided by some embodiments of the present application;

[0033] Figure 2 Rear view of a dryer provided by some embodiments of the present application;

[0034] Figure 3 For Figure 2 Cross-sectional view taken along line A-A in

[0035] Figure 4 For Figure 3 Enlarged view at B in

[0036] Figure 5 Exploded view of a partial structure of a dryer provided by some embodiments of the present application;

[0037] Figure 6 Schematic diagram of the structure of a rotating shaft in some embodiments of the present application;

[0038] Figure 7 Schematic diagram of the structure of a bearing sleeve in some embodiments of the present application;

[0039] Figure 8 Schematic diagram of the structure of a support member in some embodiments of the present application;

[0040] Figure 9 Schematic diagram of the structure of a direct drive motor in some embodiments of the present application;

[0041] Figure 10This is a schematic structural diagram of the rear wall of the drum in some embodiments of the present application.

[0042] Explanation of reference numerals:

[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. Rotating shaft; 131. Shaft body; 132. Shaft seat; 133. Spline.

[0045] 140. Bearing; 150. Direct drive motor; 151. Stator; 152. Rotor; 153. Insert; 160. Bearing seat; 161. Third mounting hole.

[0046] 170. Support member; 171. Through hole; 180. Base. Detailed implementation manners

[0047] 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.

[0048] In the description of the embodiments of the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "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 to the present application.

[0049] 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" is at least two, such as two, three, etc.

[0050] In the embodiments of the present application, unless otherwise clearly defined, terms such as "installation", "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, indirectly connected through an intermediate medium, or 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 the present application can be understood according to specific circumstances.

[0051] 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 that of the second feature.

[0052] The following will Figures 1 to 10 introduce the dryer of the embodiments of the present application in detail.

[0053] As Figures 1 to 5 shown, the dryer of the embodiments of the present application includes: a drum 120, a support member 170, a direct drive motor 150, and a rotating shaft 130. Among them, the drum 120 includes a receiving cavity 121 and a loading and unloading opening 122 located on the front side of the drum 120, and the loading and unloading opening 122 communicates with the receiving cavity 121; the support member 170 is located behind the rear wall of the drum 120; the direct drive (DD) motor includes a stator 151 and a rotor 152 rotatable relative to the stator 151, and the stator 151 is directly connected to the support member 170; the rotating shaft 130 is installed on the support member 170, one end of the rotating shaft 130 is connected to the rotor 152, and the other end of the rotating shaft 130 is connected to the rear wall of the drum 120; under the driving of the rotation of the rotor 152, the rotating shaft 130 drives the drum 120 to rotate.

[0054] In the embodiments of the present application, the rotor 152 of the direct drive motor 150 drives the drum 120 to rotate. The rotor 152 does not need to be driven by a transmission mechanism such as a belt, so that the rotor 152 and the drum 120 can be coaxially arranged. This direct drive method for driving the drum 120 to rotate can more efficiently and stably control the operation of the drum 120. Since there is no transmission mechanism such as a belt, the power loss of the rotor 152 is reduced, which has the effect of energy saving and noise reduction. Moreover, it can also reduce the space occupied by the transmission mechanism in the dryer, making the structure of the dryer more compact.

[0055] The support member 170 may be a sheet metal part, but is not limited thereto.

[0056] Without limitation, as Figure 5 shown, the direct drive motor 150 of the embodiments of the present application is an outer rotor motor, that is, the diameter of the stator 151 is within the diameter range of the rotor 152.

[0057] In the embodiments of the present application, the rotating shaft 130 is an integral component. Using the same rotating shaft 130 to connect the drum 120 and the rotor 152 respectively can further ensure the coaxiality of the drum 120 and the direct drive motor 150, and improve the stability of the rotation of the drum 120.

[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", and the position where the rear wall of the drum 120 is located is defined as "rear".

[0059] As Figure 3 shown, the drum 120 includes a cylindrical side wall 123 and a rear wall 124 connected to the rear side of the side wall 123. An access opening 122 is formed on the front side of the side wall 123.

[0060] The clothes to be dried are put into the drum 120 through the access opening 122, and the dried clothes are also taken out of the drum 120 through the access opening 122.

[0061] Exemplarily, the dryer further includes a housing. Both the drum 120 and the support member 170 are located in the inner cavity of the housing, and the housing has a fixing effect on the support member 170.

[0062] In the prior art, there is a mounting bracket between the stator 151 and the support member 170. The stator 151 needs to be first mounted on the mounting bracket, and then the mounting bracket is mounted on the support member 170 so that the stator 151 is indirectly mounted on the support member 170. In the embodiments of the present application, as Figure 3 and Figure 5 shown, the dryer does not include a mounting bracket located between the stator 151 and the support member 170, so that the stator 151 is directly connected to the support member 170. This direct mounting method can further improve the coaxiality of the stator 151 and the drum 120, and further improve the stability of the direct drive motor 150 driving the drum 120 to rotate. Moreover, without the mounting bracket, the structure of the dryer is more compact, saving the internal space of the dryer.

[0063] In the embodiments of the present application, the direct drive motor 150 is thinner than the motor indirectly mounted on the support member 170 using a mounting bracket in the prior art, which can ensure more reliable fixation of the direct drive motor 150.

[0064] In some embodiments, at least part of the surface of the stator 151 on the side opposite to the support member 170 abuts against the support member 170, so that the stator 151 is directly connected to the support member 170. Taking Figure 5 the implementation method shown as an example: the rear side of the stator 151 faces the rotor 152, the front side of the stator 151 faces the support member 170, and at least part of the front end face of the stator 151 abuts against the support member 170, so that a direct connection is established between the stator 151 and the support member 170.

[0065] In some embodiments, the dryer further includes a first fastener; the stator 151 is provided with a plurality of first mounting holes, the support member 170 is provided with a plurality of second mounting holes, and the first fastener passes through the first mounting holes and the corresponding second mounting holes to directly connect the stator 151 to the support member 170.

[0066] The first fastener includes, but is not limited to, bolts or screws.

[0067] Without limitation, the number of the first mounting holes and the second mounting holes is equal, and they are arranged in one-to-one correspondence. The number of the first mounting holes and the second mounting holes can be two, three, four or more.

[0068] Connecting the stator 151 and the support member 170 by means of the mounting holes and the first fastener is simple and reliable.

[0069] In addition to the above-mentioned manner of using the first fastener and the mounting holes, the stator 151 can be directly connected to the support member 170 in other ways, including but not limited to at least one of the following: welding, riveting, clamping.

[0070] In some embodiments, such as Figure 4 and Figure 5 As shown, along the axial direction of the drum 120, the support member 170 is located between the rear wall of the drum 120 and the direct drive motor 150. The support member 170 has a through hole 171, and the rotating shaft 130 passes through the through hole 171. Generally, the space between the support member 170 and the rear wall of the drum 120 is small. Installing the direct drive motor 150 at the rear side of the support member 170 can provide more installation space for the direct drive motor 150.

[0071] In some other embodiments, if the space between the support member and the rear wall of the drum 120 is large, the direct drive motor 150 can also be installed between the rear wall of the drum 120 and the support member 170. In this way, the support member 170 may not be provided with the through hole 171.

[0072] In some embodiments, such as Figure 4 and Figure 5 As shown, the dryer further includes a bearing seat 160 and a bearing 140. The bearing seat 160 is connected to the support member 170; the bearing 140 is in interference fit with the rotating shaft 130 and the bearing seat 160 respectively, and the rotating shaft 130 can rotate relative to the bearing seat 160 through the bearing 140.

[0073] Exemplarily, the bearing 140 can be installed in the inner cavity of the bearing seat 160 by interference fit, and the rotating shaft 130 is installed in the inner cavity of the bearing 140 by interference fit. In this way, the connection reliability among the bearing seat 160, the bearing 140 and the rotating shaft 130 can be ensured.

[0074] In some embodiments, the dryer further includes a second fastener; as Figure 7 shown, both the bearing seat 160 and the support member 170 are provided with a plurality of third mounting holes 161, and the second fastener passes through the third mounting holes 161 to mount the bearing seat 160 on the support member 170.

[0075] The first fastener includes, but is not limited to, bolts or screws.

[0076] From Figure 4 and Figure 5 it can be seen that the bearing housing 160 and the stator 151 are respectively installed on the opposite sides of the support member 170, front and back.

[0077] The bearing housing 160 and the support member 170 are connected by means of the mounting holes and the second fasteners, which is simple and reliable.

[0078] In some embodiments, the dryer further includes a positioning structure located between the bearing housing 160 and the support member 170 to position the bearing housing 160 and the support member 170, and improve the coaxiality between the bearing and the through hole 171.

[0079] The positioning structure includes, but is not limited to, key positioning. For example: a protruding key and a corresponding keyhole can be provided on at least one of the bearing housing 160 and the support member 170. Inserting the key into the corresponding keyhole can position the bearing housing 160 and the support member 170, and then the second fastener is inserted into the third mounting hole 161 to fix the two.

[0080] In some embodiments, such as Figure 4 and Figure 5 shown, the direct drive motor 150, the rotating shaft 130 and the through hole 171 are coaxially distributed. This can reduce the friction and noise problems caused by the rotation of the drum 120, and can also improve the stability of the rotation of the drum 120.

[0081] In some embodiments, such as Figure 5 and Figure 6 shown, the rotating shaft 130 includes a shaft body 131 and a shaft seat 132. One end of the shaft body 131 passes through the support member 170 and is connected to the rotor 152; the shaft seat 132 is connected to the other end of the shaft body 131. The shaft seat 132 protrudes axially from the shaft body 131, and the shaft seat 132 is installed on the rear wall of the drum 120.

[0082] From Figure 6 it can be seen that the shaft seat 132 is generally disc-shaped. When this structure is connected to the drum 120, the contact area between the shaft seat 132 and the drum 120 can be increased, and the connection reliability can be improved.

[0083] In some embodiments, the shaft seat 132 is riveted to the rear wall 124 of the drum 120. In other embodiments, the shaft seat 132 and the drum 120 can also be connected by means of welding, screw fixation, etc.

[0084] In some embodiments, the shaft body 131 is splined to the rotor 152. For example: as Figure 6 shown, splines 133 are provided on the circumferential side of the free end of the shaft body 131 away from the shaft seat 132. As Figure 9As shown, an insert 153 is installed in the shaft hole of the stator 151 through which the rotating shaft 130 passes. Splines are also provided on the inner wall of the insert 153, and the splines of the shaft body 131 cooperate with the splines of the insert 153 to achieve synchronous rotation of the shaft body 131 and the rotor 152.

[0085] In some embodiments, the dryer further includes a base 180 located below the drum 120. The base 180 has an air duct, the inlet of the air duct is communicated with the access opening 122, and the outlet of the air duct is communicated with the air inlet 1241 (as Figure 10 shown) on the rear wall of the drum 120. A compressor, a heat exchange cross-flow, an evaporator, a condenser and a fan are also provided in the air duct. There is a heat exchange medium in the heat exchange pipeline, and the heat exchange pipeline is respectively communicated with the compressor, the evaporator and the condenser to enable the heat exchange medium to circulate between 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 air duct to dehumidify the air flowing through the air duct, and the condenser can release heat to the air duct of the base 180 to heat the dehumidified air.

[0086] The drying process of the dryer generally includes: putting the clothes to be dried into the accommodation cavity 121 through the access opening 122. Subsequently, the fan is started to drive the air flow. The wet and cold air in the accommodation cavity 121 enters the air duct of the base 180 through the access opening 122. After the air flow entering the air duct 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 air duct and successively enters the accommodation cavity 121 through the outlet of the air duct and the air inlet 1241. The dry hot air flow flowing into the accommodation 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 accommodation cavity 121 and the air duct, the drum 120 is driven to rotate by an external force (generally driven by a motor). After the clothes are dried, the clothes are taken out of the accommodation cavity 121 through the access opening 122.

[0087] According to the foregoing description, the rotation centers of the direct drive motor 150, the bearing 140, the rotating shaft 130 and the through hole 171 are on the same straight line. When the dryer is running, the dynamic balance of the drum 120 during rotation can be maximally ensured, and the problems of friction and noise caused by the shaking of the drum can be reduced.

[0088] Among them, the other structures and working principles of the dryer can adopt the solutions of the existing technologies and will not be elaborated here.

[0089] In this specification, the various embodiments or implementation manners are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0090] In the description of this specification, the descriptions with reference 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 the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit 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 pick-up and drop opening located at the front side of the drum, and the pick-up and drop opening communicates with the receiving cavity; A support member located at the rear side of the rear wall of the drum; A direct drive motor, including a stator and a rotor rotatable relative to the stator, and the stator is directly connected to the support member; A rotating shaft installed on the support member, one end of the rotating shaft is connected to the rotor, and the other end of the rotating shaft is connected to the rear wall of the drum; under the action of the rotation of the rotor, the rotating shaft drives the drum to rotate.

2. The dryer according to claim 1, wherein At least part of the surface of the stator on the side opposite to the support member abuts against the support member, so that the stator is directly connected to the support member.

3. The dryer according to claim 1, wherein The dryer further includes a first fastener; The stator is provided with a plurality of first mounting holes, the support member is provided with a plurality of second mounting holes, and the first fastener passes through the first mounting holes and the corresponding second mounting holes to directly connect the stator to the support member.

4. The dryer according to claim 1, wherein, The way that the stator is directly connected to the support member includes at least one of the following: welding, riveting, and clamping.

5. The dryer according to claim 1, characterized in that, Along the axial direction of the drum, the support member is located between the rear wall of the drum and the direct drive motor, and the support member has a through hole, and the rotating shaft passes through the through hole.

6. The dryer according to claim 5, characterized in that, The dryer further includes: A bearing seat connected to the support member; Bearings, which are in interference fit with the rotating shaft and the bearing seat respectively, and the rotating shaft can rotate relative to the bearing seat through the bearings.

7. The dryer according to claim 6, characterized in that, The dryer further includes a second fastener; Both the bearing seat and the support member are provided with a plurality of third mounting holes, and the second fastener passes through the third mounting holes to mount the bearing seat on the support member.

8. The dryer according to claim 6, characterized in that, The dryer further includes a positioning structure located between the bearing seat and the support member to position the bearing seat and the support member and improve the coaxiality of the bearing and the through hole.

9. The dryer according to claim 5, characterized in that, The direct drive motor, the rotating shaft and the through hole are coaxially distributed.

10. The dryer according to claim 1 or 5, characterized in that, The rotating shaft includes: A shaft body, one end of which passes through the support member and is connected to the rotor; A shaft seat connected to the other end of the shaft body, and the shaft seat protrudes axially from the shaft body, and the shaft seat is installed on the rear wall of the drum.

11. The dryer according to claim 10, characterized in that, The shaft seat is riveted to the rear wall of the drum.

12. The dryer according to claim 10, characterized in that, The shaft body is spline-connected to the rotor.

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