Clothes dryer

Abstract

The invention discloses a clothes dryer which comprises an air duct shell assembly, a fan assembly, a fan assembly, a fan assembly and a fan assembly, and the air duct shell assembly defines a ventilation cavity with a through opening in one side; the clothes dryer comprises a ventilation cavity and a clothes processing cylinder assembly, a clothes processing cavity is defined by the clothes processing cylinder assembly, one part of the clothes processing cylinder assembly stretches into the ventilation cavity from the through opening and is provided with an air inlet part, and the air inlet part communicates with the ventilation cavity and the clothes processing cavity. More and larger clothes can be processed at the same time, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of clothes dryers, and more particularly, to a clothes dryer. Background Art

[0002] The structure of a traditional clothes dryer includes a clothes treatment cylinder assembly, a rear panel, and an air duct housing. The clothes treatment cylinder assembly defines a clothes treatment cavity. A first flow channel is defined between the air duct housing and the rear panel. An air outlet area is formed on the rear panel, and an air inlet area is formed on the rear wall of the clothes treatment cylinder assembly. The air outlet area and the air inlet area are arranged corresponding to each other, and a second flow channel is defined between them. Airflow sequentially passes through the first flow channel, the air outlet area, the second flow channel, and the air inlet area and enters the clothes treatment cavity. The clothes treatment cylinder assembly is fixed on the rear panel through bearings.

[0003] In the prior art, the capacity of the clothes treatment cylinder assembly is limited by the structure and cannot process more and larger clothes simultaneously, which affects the user experience and there is room for improvement. Summary of the Invention

[0004] The present invention aims to solve at least one of the above technical problems in the prior art to some extent. For this purpose, the present invention provides a clothes dryer, which has a larger capacity of the clothes treatment cavity and can process more and larger clothes simultaneously, improving the user experience.

[0005] A clothes dryer according to an embodiment of the present invention includes: an air duct housing assembly that defines a ventilation cavity with an opening on one side; a clothes treatment cylinder assembly that defines a clothes treatment cavity, and a part of the clothes treatment cylinder assembly extends into the ventilation cavity from the opening and has an air inlet portion that communicates the ventilation cavity and the clothes treatment cavity.

[0006] For the clothes dryer according to an embodiment of the present invention, the capacity of the clothes treatment cavity is larger, and it can process more and larger clothes simultaneously, improving the user experience.

[0007] In addition, the clothes dryer according to an embodiment of the invention may further have the following additional technical features:

[0008] According to some embodiments of the present invention, the clothes dryer further includes: an air duct housing assembly that defines a ventilation cavity with an opening on one side; a clothes treatment cylinder assembly that defines a clothes treatment cavity, and a part of the clothes treatment cylinder assembly extends into the ventilation cavity from the opening and has an air inlet portion that communicates the ventilation cavity and the clothes treatment cavity.

[0009] According to some embodiments of the present invention, the air duct housing assembly is provided with a support portion that contacts the outer surface of the clothes treatment cylinder assembly to support the clothes treatment cylinder assembly.

[0010] According to some embodiments of the present invention, the support portion includes support rollers.

[0011] According to some embodiments of the present invention, the air duct housing assembly includes: a support plate, the through opening is provided on the support plate; an air duct housing, the air duct housing is provided on one side in the thickness direction of the support plate and covers the through opening, and the air duct housing defines the ventilation cavity; wherein, the support portion is provided on the other side in the thickness direction of the support plate.

[0012] According to some embodiments of the present invention, the laundry treatment drum assembly includes: a drum, one end of the drum has a laundry loading and unloading opening and the other end has an open end; an air inlet hood, the air inlet hood covers the open end to define the laundry treatment cavity with the drum, and at least a part of the air inlet hood extends into the ventilation cavity from the through opening.

[0013] According to some embodiments of the present invention, the air inlet hood includes a first extension portion, the first extension portion extends into the ventilation cavity and defines a first chamber communicating with the inner cavity of the drum, the laundry treatment cavity includes the inner cavity of the drum and the first chamber, and the air inlet portion is provided on the first extension portion.

[0014] According to some embodiments of the present invention, the shape of the through opening is circular, and the diameter of the outer peripheral wall of the drum is greater than the diameter of the through opening.

[0015] According to some embodiments of the present invention, the edge of the through opening has a flanging structure or a curling structure.

[0016] According to some embodiments of the present invention, the air inlet hood is an integral part.

[0017] According to some embodiments of the present invention, a sealing ring is provided between the air inlet hood and the air duct housing assembly, and the sealing ring surrounds the outside of the through opening.

[0018] According to some embodiments of the present invention, the air inlet hood is rotatable relative to the air duct housing assembly, and one of the air inlet hood and the air duct housing assembly is fixedly connected to the sealing ring and the other is movably engaged with the sealing ring.

[0019] According to some embodiments of the present invention, the air inlet hood includes: an annular hood body, the outer ring of the annular hood body is connected to the edge of the open end, the inner ring of the annular hood body defines a ventilation opening; a middle hood body, the middle hood body covers the ventilation opening and is fixedly connected to the air duct housing assembly, at least a part of the middle hood body extends into the ventilation cavity from the through opening, and the air inlet portion is provided on the middle hood body.

[0020] According to some embodiments of the present invention, a sealing ring is provided between the annular cover and the middle cover, and the sealing ring is disposed around the ventilation opening.

[0021] According to some embodiments of the present invention, the annular cover is rotatable relative to the middle cover, and one of the annular cover and the middle cover is fixedly connected to the sealing ring and the other is movably engaged with the sealing ring.

[0022] According to some embodiments of the present invention, the dryer further includes a mounting seat, the mounting seat defines an air duct to communicate the clothing treatment cavity and the ventilation cavity, and a heating member is provided in the air duct.

[0023] According to some embodiments of the present invention, the dryer further includes: a heat pump system, the heat pump system includes an evaporator, a condenser and a compressor, and the heating member includes the evaporator and the condenser.

[0024] According to some embodiments of the present invention, the dryer further includes: a support member, the support member is disposed opposite to the air duct housing assembly, and two ends of the clothing treatment cylinder assembly are respectively supported on the air duct housing assembly and the support member. Description of the Drawings

[0025] Figure 1 is a schematic structural view of a dryer according to an embodiment of the present invention;

[0026] Figure 2 is a partial structural view of the dryer according to the embodiment of the present invention after removing the air duct housing;

[0027] Figure 3 is a partial structural view of the dryer according to the embodiment of the present invention after removing the housing;

[0028] Figure 4 is Figure 3 a partial structural view of the dryer in

[0029] Figure 5 after removing the air duct housing;

[0030] Figure 6 is Figure 5 a partial structural view of the dryer in

[0031] Figure 7 after removing the housing and the base;

[0032] Figure 8 is a side view of the dryer according to the embodiment of the present invention after removing the housing;

[0033] Figure 9 is a top view of the dryer according to an embodiment of the present invention after removing the casing;

[0034] Figure 10 is a sectional view of the dryer according to an embodiment of the present invention;

[0035] Figure 11 is a partial sectional view of the dryer according to an embodiment of the present invention;

[0036] Figure 12 is Figure 11 a partial enlarged view at A;

[0037] Figure 13 is a partial sectional view of the dryer according to an embodiment of the present invention;

[0038] Figure 14 is a schematic structural view of the laundry treatment drum assembly according to an embodiment of the present invention;

[0039] Figure 15 is a schematic structural view of the laundry treatment drum assembly according to an embodiment of the present invention;

[0040] Figure 16 is Figure 15 a sectional view taken along A - A;

[0041] Figure 17 is Figure 16 a partial enlarged view at B;

[0042] Figure 18 is a partial sectional view of the dryer according to another embodiment of the present invention;

[0043] Figure 19 is Figure 18 a partial enlarged view at C;

[0044] Figure 20 is a partial sectional view of the dryer according to another embodiment of the present invention;

[0045] Figure 21 is Figure 20 a partial enlarged view at D.

[0046] Reference numerals:

[0047] Dryer 1000, air duct housing assembly 1, support part / support roller 11, support plate 12, protection structure 121, air duct housing 13, ventilation cavity 101, ventilation opening 1011, air passing opening 1012, laundry processing cylinder assembly 2, cylinder body 21, cylinder barrel 211, cylinder cover 212, air inlet hood 22, annular hood body 221, first annular flange 2211, middle hood body 222, annular support protrusion 2221, first extension part 223, end wall 2232, peripheral wall 2233, sealing ring 224, structure strengthening part 2231, first strengthening part 22311, second strengthening part 22312, annular abutting protrusion 225, second extension part 226, laundry processing cavity 201, open end 2011, laundry access opening 2012, ventilation opening 2013, first cavity 2014, second cavity 2015, sealing ring 3, mounting seat 4, air duct 401, support member 6, air inlet part 7, first air inlet part 71, first air inlet hole 711, second air inlet part 72, second air inlet hole 721, air wheel 8. Detailed implementation manners

[0048] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0052] The structure of a traditional clothes dryer includes a clothes processing drum assembly, a rear panel and an air duct housing. The clothes processing drum assembly defines a clothes processing cavity. A first flow channel is defined between the air duct housing and the rear panel. An air outlet area is formed on the rear panel, and an air inlet area is formed on the rear wall of the clothes processing drum assembly. The air outlet area and the air inlet area are correspondingly arranged, and a second flow channel is defined therebetween. The air flow sequentially passes through the first flow channel, the air outlet area, the second flow channel and the air inlet area and enters the clothes processing cavity. The clothes processing drum assembly is fixed on the rear panel through bearings.

[0053] In the prior art, the capacity of the clothes processing drum assembly is limited by the structure and cannot process more and larger clothes simultaneously, which affects the user experience.

[0054] For this reason, in an embodiment of the present invention, a clothes dryer 1000 is designed in which a clothes processing drum assembly 2 can extend backward into a ventilation cavity 101 defined by an air duct housing assembly 1. Thus, the capacity of the clothes processing cavity 201 is increased, and the clothes dryer 1000 can process more and larger clothes simultaneously, improving the user experience.

[0055] Reference is made below to Figures 1 - 21 describe the clothes dryer 1000 according to an embodiment of the present invention.

[0056] The clothes dryer 1000 according to an embodiment of the present invention may include: an air duct housing assembly 1 and a clothes processing drum assembly 2.

[0057] The clothes processing drum assembly 2 defines a clothes processing cavity 201 for accommodating clothes to be processed. The capacity of the clothes processing cavity 201 affects the number of clothes that the clothes dryer 1000 can process simultaneously and the size of the clothes that the clothes dryer 1000 can process. To improve the user experience, the volume of the clothes processing cavity 201 should be as large as possible. The air duct housing assembly 1 defines a ventilation cavity 101, and the clothes dryer 1000 can convey high-temperature air flow into the clothes processing cavity 201 through the ventilation cavity 101 to achieve the clothes drying function.

[0058] Among them, one side of the air duct shell assembly 1 has a through opening 1011, and a part of the clothing processing drum assembly 2 extends from the through opening 1011 into the ventilation cavity 101, thereby, the clothing processing drum assembly 2 can extend backward until it extends into the ventilation cavity 101, and the clothing processing drum assembly 2 can be designed to be deeper without changing the external dimensions of the dryer 1000, thereby increasing the capacity of the clothing processing cavity 201, and the dryer 1000 can process more and larger clothes at the same time, thereby improving the user experience.

[0059] The clothes treatment drum assembly 2 can extend backward until it reaches the ventilation cavity 101. The clothes treatment drum assembly 2 has an air inlet 7, which can directly connect the ventilation cavity 101 and the clothes treatment cavity 201. That is to say, during the flow of air, the air in the ventilation cavity 101 can directly enter the clothes treatment cavity 201 through the air inlet 7. On this basis, the original complex air outlet area on the air duct housing assembly 1 can directly open a larger opening 1011, thereby reducing the production cost of the dryer 1000.

[0060] According to the dryer 1000 of the embodiment of the present invention, the capacity of the clothes processing chamber 201 of the dryer 1000 is larger, and more and larger clothes can be processed at the same time, thereby improving the user experience.

[0061] like Figure 8 As shown, the air duct housing assembly 1 is provided with a support portion 11, which can rotatably support the clothing treatment drum assembly 2 at the front side of the air duct housing assembly 1, ensuring that the clothing treatment drum assembly 2 can be stably arranged and stably rotated.

[0062] In some embodiments, the support portion 11 is formed as a bearing structure respectively connected to the laundry treatment tub assembly 2 and the air duct housing assembly 1. At this time, the support portion 11 is disposed at the center of the bottom wall of the laundry treatment tub assembly 2.

[0063] In other embodiments, referring to Figures 1 - 8 In order to ensure the air inlet area of ​​the clothing processing drum assembly 2 and to ensure the volume of the clothing processing drum assembly 2, the dryer 1000 cancels the bearing structure for supporting the clothing processing drum assembly 2, and supports the clothing processing drum assembly 2 through a support portion 11 in contact with the outer surface of the clothing processing drum assembly 2. The support portion 11 is disposed on the outer side of the clothing processing drum assembly 2 and cooperates with the outer surface of the clothing processing drum assembly 2. There is no need to set a structure for connecting with the bearing at the center position of the bottom wall of the clothing processing drum assembly 2, and the entire rear wall of the clothing processing drum assembly 2 can be used to open the air inlet portion 7.

[0064] There is no need to set a structure for connecting to the bearing at the position on the air duct shell assembly 1 corresponding to the clothing processing drum assembly 2, nor is there a need to set a structure with sufficient strength to support the clothing processing drum assembly 2. Therefore, a larger opening 1011 can be directly opened at the position opposite to the clothing processing drum assembly 2 to be opposite to the air inlet area of ​​the clothing processing drum assembly 2, so as to reduce the resistance to the airflow flowing to the clothing processing chamber 201 while allowing part of the clothing processing drum assembly 2 to extend from the opening 1011 into the ventilation chamber 101.

[0065] like Figure 8 As shown, the support portion 11 includes a support roller 11, and the support roller 11 includes at least two. The at least two support rollers 11 can limit the clothing processing drum assembly 2 below and on both sides of the clothing processing drum assembly 2 to ensure the stability of the clothing processing drum assembly 2. In the process of rotation of the clothing processing drum assembly 2, the support roller 11 is in contact with the outer surface of the clothing processing drum assembly 2 and can roll relatively, and there is rolling friction between the two. The support roller 11 provides a stable friction force while the friction resistance between the two is small, which is beneficial to ensure the stability of the rotation of the clothing processing drum assembly 2.

[0066] Combination Figures 1 - 7 , Figures 10 - 13 and Figures 18 - 21 In the illustrated embodiment, the air duct housing assembly 1 comprises: a support plate 12 and an air duct housing 13. A through opening 1011 is provided on the support plate 12, the air duct housing 13 is provided on one side of the support plate 12 in the thickness direction and covers the through opening 1011, the air duct housing 13 defines a ventilation cavity 101, wherein the support portion 11 is provided on the other side of the support plate 12 in the thickness direction.

[0067] That is, the air duct shell 13 is disposed on one side of the support plate 12, and a ventilation cavity 101 having a through opening 1011 is defined between the air duct shell 13, and the clothes processing drum assembly 2 is disposed on the other side of the support plate 12, and at least a portion of the clothes processing drum assembly 2 is disposed opposite to the through opening 1011, and the portion disposed opposite to the through opening 1011 forms an air inlet 7 of the clothes processing drum assembly 201. The support portion 11 is disposed on the same side as the clothes processing drum assembly 2, and is disposed below the clothes processing drum assembly 2 to support the clothes processing drum assembly 2. The airflow in the ventilation cavity 101 can enter the clothes processing cavity 201 directly through the air inlet 7 provided at the corresponding portion of the clothes processing drum assembly 2 and the through opening 1011, and the structure of the support plate 12 is simple, which reduces the production cost.

[0068] like Figures 10 - 21As shown, the clothing treatment drum assembly 2 includes: a drum body 21 and an air inlet cover 22. The drum body 21 has an open opening 2011 at one axial end and a clothing access opening 2012 at the other end. The air inlet cover 22 covers the open opening 2011 to define a clothing treatment chamber 201 communicated with the clothing access opening 2012 with the drum body 21, wherein the air inlet cover 22 and the drum body 21 may be an integrated structure, or the air inlet cover 22 and the drum body 21 may be separately provided and then fixedly connected, which is not limited here.

[0069] At least a portion of the air inlet cover 22 extends from the opening 1011 into the ventilation cavity 101 to increase the capacity of the clothing processing cavity 201 so that the dryer 1000 can process more and larger clothing at the same time.

[0070] Specifically, the air inlet cover 22 includes a first extension portion 223, which extends into the ventilation cavity 101 and defines a first chamber 2014 connected to the inner cavity of the barrel 21. The clothing processing cavity 201 includes the inner cavity of the barrel 21 and the first chamber 2014, and the air inlet portion 7 is arranged on the first extension portion 223.

[0071] The design of the first extension portion 223 on the air inlet cover 22 increases the capacity of the laundry processing chamber 201, and the clothes dryer 1000 can process more and larger laundry at the same time. The first extension portion 223 is provided with an air inlet portion 7 connected to the laundry processing chamber 201, and the airflow in the ventilation chamber 101 can enter the laundry processing chamber 201 through the air inlet portion 7 provided on the first extension portion 223.

[0072] Due to the special structure of the first extension portion 223 and the flow direction of the air flow in the air duct 401 cavity around the first extension portion 223 flowing radially along the clothing processing drum assembly 2, the different opening methods of the air inlet portion 7 on the first extension portion 223 will greatly affect the distribution and flow of the air flow in the clothing processing chamber 201. Therefore, the air inlet portion 7 includes a first air inlet portion 71, and the first air inlet portion 71 is arranged on the peripheral wall 2233 of the first extension portion 223. That is to say, by opening an air inlet structure on the peripheral wall 2233 of the first extension portion 223, the air flow flowing radially along the clothing processing drum assembly 2 can directly enter the clothing processing chamber 201 through the first air inlet portion 71 arranged on the peripheral wall 2233. The air flow will not generate excessive loss in the process of entering the clothing processing chamber 201, thereby ensuring the flow rate and flow velocity of the air flow entering the clothing processing chamber 201, and further ensuring the dryer effect of the dryer 1000.

[0073] like Figure 7 As shown, the shape of the through opening 1011 is circular to correspond to the shape of the first extension portion 223 extending into the ventilation cavity 101, so that the first extension portion 223 can be set as large as possible.

[0074] In other embodiments, the shape of the through opening 1011 may also be formed into other shapes besides a circle, which is not limited here.

[0075] Furthermore, since the through-port 1011 is connected to the ventilation cavity 101, the airflow in the ventilation cavity 101 can flow out through the through-port 1011. When the diameter of the outer peripheral wall of the cylinder 21 is smaller than the diameter of the through-port 1011, the airflow will flow out through the gap between the edge of the through-port 1011 and the outer peripheral wall of the cylinder 21, causing air volume loss. Therefore, the diameter of the outer peripheral wall of the cylinder 21 is larger than the diameter of the through-port 1011.

[0076] Since the clothes treatment drum assembly 2 is easy to collide with the hole edge of the opening 1011 during the installation process, and the hole edge of the opening 1011 is relatively low in strength and has a sharp edge, which will affect the safety of the installation process, a protective structure 121 is provided at the edge of the opening 1011, such as Figure 12 and Figure 21 As shown, the protective structure 121 can, on the one hand, prevent the edge of the opening 1011 from being too sharp and affecting the safety during installation, and on the other hand, can improve the strength of the air duct shell assembly 1 at the edge of the opening 1011 and prevent the edge of the opening 1011 from deforming when the edge of the opening 1011 is affected by external force.

[0077] The protection structure 121 may be a flange structure or a curling structure.

[0078] like Figures 10 - 17 As shown, the air inlet cover 22 is an integrated part. At this time, during the operation of the clothes drying drum, the air inlet cover 22 rotates as a whole relative to the air duct shell assembly 1. In order to ensure that the clothes processing drum assembly 2 can rotate stably, there is a gap between the air duct shell assembly 1 and the clothes processing drum assembly 2. The airflow will flow out through the gap, causing air volume loss. Therefore, a sealing ring 3 is provided between the air inlet cover 22 and the air duct shell assembly 1, and the sealing ring 3 surrounds the outside of the through opening 1011, that is, it also surrounds the outside of the air inlet portion 7, so as to achieve sealing between the air duct shell assembly 1 and the clothes processing drum assembly 2.

[0079] Furthermore, since the air inlet cover 22 is rotatable relative to the air duct shell assembly 1, in order to fix the sealing ring 3 and prevent the sealing ring 3 structure from falling off and deforming during the rotation of the air inlet cover 22 relative to the air duct shell assembly 1, the sealing ring 3 is fixed on one of the air inlet cover 22 and the air duct shell assembly 1, and the other one is movably cooperated with the sealing ring 3.

[0080] According to other embodiments of the present invention, the air inlet cover 22 includes an annular cover body 221 and a middle cover body 222, which are formed separately, wherein the annular cover body 221 and the cylinder body 21 can be an integrally formed part, or the annular cover body 221 and the cylinder body 21 are formed separately and then connected, referring to Figures 18 - 21At this time, the outer circle of the annular cover body 221 is connected to the edge of the open opening 2011 , and the inner circle of the annular cover body 221 defines a ventilation opening 2013 .

[0081] The middle cover body 222 covers the vent 2013 to ensure the sealing of the clothing processing drum assembly 2. The air inlet portion 7 can be arranged at the portion of the middle cover body 222 opposite to the through opening 1011, and except for the air inlet portion 7, the through opening 1011 is sealed by the middle cover body 222. The airflow can only flow out of the ventilation cavity 101 through the air inlet portion 7, but cannot flow out through the gap between the middle cover body 222 and the air duct shell assembly 1. The middle cover body 222 and the air duct shell assembly 1 are integrally formed or are separately formed and then fixedly connected.

[0082] At least a portion of the middle cover body 222 extends from the opening 1011 into the ventilation cavity 101 to increase the volume of the clothing processing cavity 201 , increase the air intake area of ​​the air intake portion 7 , and improve the drying effect of the clothes dryer 1000 .

[0083] like Figures 18 - 21 As shown, since the middle cover body 222 is fixedly connected to the air duct shell assembly 1, and the annular cover body 221 rotates with the cylinder body 21 relative to the air duct shell assembly 1, the annular cover body 221 rotates relative to the middle cover body 222. In order to avoid friction during the relative rotation between the two, there is a gap between the middle cover body 222 and the annular cover body 221. Further, in order to achieve the sealing of the clothing processing chamber 201, a sealing ring 224 is provided between the annular cover body 221 and the middle cover body 222. The sealing ring 224 is arranged around the vent 2013 to ensure that the middle cover body 222 and the sealing ring 224 can seal the vent 2013 together, thereby ensuring the sealing effect at the vent 2013.

[0084] Furthermore, since the annular cover body 221 is rotatable relative to the middle cover body 222, in order to fix the sealing ring 224 and prevent the sealing ring 224 structure from falling off and deforming during the rotation of the annular cover body 221 relative to the middle cover body 222, the sealing ring 224 is fixedly connected to one of the annular cover body 221 and the middle cover body 222 and movably cooperates with the other.

[0085] like Figure 3 and Figure 4 As shown, the clothes dryer 1000 further includes a mounting base 4, which defines an air duct 401 to connect the clothing processing chamber 201 and the ventilation chamber 101, and a heating element is arranged in the air duct 401. During the operation of the clothes dryer 1000, the wet and cold airflow in the clothing processing chamber 201 passes through the air duct 401 defined by the mounting base 4, is heated and dehumidified in the air duct 401, passes through the air port 1012, and enters the ventilation chamber 101 defined by the air duct shell assembly 1 under the drive of the wind wheel 8, and the dry and hot airflow in the ventilation chamber 101 then enters the clothing processing chamber 201 through the air inlet 7 of the clothing processing drum assembly 2, and performs drying treatment on the clothing.

[0086] According to some embodiments of the present invention, the dryer 1000 further includes: a heat pump system, the heat pump system includes an evaporator, a condenser and a compressor, and the heating member includes the evaporator and the condenser. Inside the laundry treatment chamber 201, dry hot air passes through the wet clothes, and the moisture remaining on the clothes absorbs heat, and the air becomes humid hot air. The humid hot air enters the air duct 401, and the humid hot air is converted into dry cold air after passing through the condenser, and the water vapor in the air condenses into water droplets and is discharged. At this time, the dry cold air continues to be heated and pressurized by the compressor and the evaporator.

[0087] As Figure 3 and Figure 4 shown, the dryer 1000 further includes: a support member 6, the support member 6 is disposed opposite to the air duct housing assembly 1, and together with the air duct housing assembly 1, limits the laundry treatment drum assembly 2 at both axial ends of the laundry treatment drum assembly 2, and both ends of the laundry treatment drum assembly 2 are respectively supported on the air duct housing assembly 1 and the support member 6 to ensure the stability of the setting of the laundry treatment drum assembly 2.

[0088] A specific embodiment of the dryer 1000 of the present invention will be described below with reference to the drawings.

[0089] As Figures 1 - 9 shown, the dryer 1000 includes a mounting base 4, a support member 6, an air duct housing assembly 1 and a laundry treatment drum assembly 2.

[0090] The laundry treatment drum assembly 2 defines a laundry treatment chamber 201, the laundry treatment chamber 201 is used to accommodate the laundry to be processed, and the capacity of the laundry treatment chamber 201 affects the number of clothes that the dryer 1000 can process at the same time and the size of the clothes that the dryer 1000 can process. In order to improve the user experience, the volume of the laundry treatment chamber 201 should be as large as possible. The air duct housing assembly 1 defines a ventilation chamber 101, and the dryer 1000 can convey high-temperature air flow into the laundry treatment chamber 201 through the ventilation chamber 101 to achieve the drying function.

[0091] Wherein, one side of the air duct housing assembly 1 has an opening 1011, and a part of the laundry treatment drum assembly 2 extends into the ventilation chamber 101 from the opening 1011. Thus, the laundry treatment drum assembly 2 can extend backward until it extends into the ventilation chamber 101, while not changing the external dimensions of the dryer 1000, the laundry treatment drum assembly 2 can be designed deeper, thereby increasing the capacity of the laundry treatment chamber 201, and the dryer 1000 can process more and larger clothes at the same time, improving the user experience.

[0092] The laundry drum assembly 2 can extend backward until it extends into the ventilation cavity 101. The laundry drum assembly 2 has an air inlet portion 7, and the air inlet portion 7 can directly communicate with the ventilation cavity 101 and the laundry treatment cavity 201. That is to say, during the flow of the air current, the air current in the ventilation cavity 101 can directly enter the laundry treatment cavity 201 through the air inlet portion 7. On this basis, a relatively large through opening 1011 can be directly opened in the originally structurally complex air outlet area on the air duct housing assembly 1, reducing the production cost of the dryer 1000.

[0093] As Figure 8 shown, the air duct housing assembly 1 is provided with a support portion 11, and the support portion 11 can rotatably support the laundry drum assembly 2 on the front side of the air duct housing assembly 1 to ensure that the laundry drum assembly 2 can be stably arranged and rotated stably. Refer to Figures 1 - 8 , in order to ensure the air inlet area of the laundry drum assembly 2 and ensure the volume of the laundry drum assembly 2, the dryer 1000 cancels the bearing structure for supporting the laundry drum assembly 2, and supports the laundry drum assembly 2 through the support portion 11 in contact with the outer surface of the laundry drum assembly 2. The support portion 11 is arranged on the outside of the laundry drum assembly 2 and cooperates with the outer surface of the laundry drum assembly 2. There is no need to arrange a structure for connecting with the bearing at the central position of the bottom wall of the laundry drum assembly 2, and the entire rear wall of the laundry drum assembly 2 can be used to form the air inlet portion 7.

[0094] There is also no need to arrange a structure for connecting with the bearing at the position on the air duct housing assembly 1 corresponding to the laundry drum assembly 2, and there is no need to arrange a structure with sufficient strength for supporting the laundry drum assembly 2. Therefore, a relatively large through opening 1011 can be directly opened at the position opposite to the laundry drum assembly 2 and opposite to the air inlet area of the laundry drum assembly 2, so as to reduce the resistance to the air current flowing to the laundry treatment cavity 201 while allowing part of the laundry drum assembly 2 to extend into the ventilation cavity 101 through the through opening 1011.

[0095] As Figure 8 shown, the support portion 11 includes support rollers 11, and there are at least two support rollers 11. At least two support rollers 11 can limit the laundry drum assembly 2 below and on both sides of the laundry drum assembly 2 to ensure the stability of the setting of the laundry drum assembly 2. During the rotation of the laundry drum assembly 2, the support rollers 11 are in contact with the outer surface of the laundry drum assembly 2 and can roll relatively. The friction between the two is rolling friction. The support rollers 11 provide stable frictional force while the frictional resistance between the two is relatively small, which is beneficial to ensuring the stability of the rotation of the laundry drum assembly 2.

[0096] The laundry treatment drum assembly 2 has an annular mating wall, and a plurality of support rollers 11 are mated with the annular mating wall. The cross-section of the annular mating wall is circular. The roundness of the circle formed by the cross-section at the mating part of the annular mating wall and the support rollers 11 determines the smoothness during the rotational operation of the laundry treatment drum assembly 2. The rounder the circle, the less likely the laundry treatment drum assembly 2 is to have abnormal conditions such as jumping during rotation, thereby ensuring less noise during the operation of the laundry treatment drum assembly 2.

[0097] Among them, the annular mating wall extends along the axial direction of the laundry treatment drum assembly 2. The support rollers 11 can give the laundry treatment drum assembly 2 a radially inward support force pointing to the center of the circle through the annular mating wall, ensuring the stability of the setting of the laundry treatment drum assembly 2.

[0098] Alternatively, the annular mating wall extends outward along the axial direction of the laundry treatment drum assembly 2 towards the direction close to the laundry loading and unloading port 2012. Thus, the support rollers 11 can give the laundry treatment drum assembly 2 a radially inward acting force to ensure the stability of the setting of the laundry treatment drum assembly 2 and an axial forward force, avoiding the axial position of the laundry treatment drum assembly 2 from shifting, ensuring the stability of the operating position of the laundry treatment drum assembly 2, and avoiding the laundry treatment drum assembly 2 from moving back and forth and hitting the air duct housing assembly.

[0099] According to some embodiments of the present invention, the included angle between the annular mating wall and the central axis of the laundry treatment drum assembly 2 is less than 45°, so as to ensure the contact area between the annular mating wall and the support rollers 11, and avoid the local structure of the laundry treatment drum assembly 2 from being subjected to excessive force due to too small a contact area between the annular mating wall and the support rollers 11, resulting in structural deformation.

[0100] According to some embodiments of the present invention, the axial direction of the support rollers 11 is parallel to the axial direction of the laundry treatment drum assembly 2, so as to ensure rolling contact between the support rollers 11 and the laundry treatment drum assembly 2 during the rotation of the laundry treatment drum assembly 2. The dimension of the annular mating wall in the axial direction of the laundry treatment drum assembly 2 is greater than the dimension of the support rollers 11 in their axial direction, so as to ensure the contact area between the support rollers 11 and the annular mating wall while avoiding the axial ends of the support rollers 11 from colliding with the laundry treatment drum assembly 2, or avoiding the laundry treatment drum assembly 2 from falling off the support rollers 11, affecting the operating stability.

[0101] The annular mating wall is located in the air inlet hood 22. By arranging the annular mating wall in the air inlet hood 22, the forming process of the air inlet hood 22 can ensure the strength at the annular mating wall and the roundness of the circular cross-section of the annular mating wall, ensure the operating stability of the dryer, and reduce the noise during the operation of the dryer. Further, the annular mating wall is located outside the first extension portion 233 of the air inlet hood 22.

[0102] Combined Figures 1 - 7 、 Figures 10 - 13In the illustrated embodiment, the air duct housing assembly 1 includes a support plate 12 and an air duct housing 13. An opening 1011 is provided in the support plate 12, and the air duct housing 13 is provided on one side in the thickness direction of the support plate 12 and covers the opening 1011. The air duct housing 13 defines a ventilation cavity 101. Among them, a support portion 11 is provided on the other side in the thickness direction of the support plate 12.

[0103] That is to say, the air duct housing 13 is provided on one side of the support plate 12, and a ventilation cavity 101 with an opening 1011 is defined therebetween. The clothing treatment cylinder assembly 2 is provided on the other side of the support plate 12, and at least a part of the clothing treatment cylinder assembly 2 is disposed opposite to the opening 1011. The part disposed opposite to the opening 1011 forms an air inlet portion 7 of the clothing treatment cavity 201. The support portion 11 is provided on the same side as the clothing treatment cylinder assembly 2 and is disposed below the clothing treatment cylinder assembly 2 to support the clothing treatment cylinder assembly 2. The air flow in the ventilation cavity 101 can enter the direct clothing treatment cavity 201 through the air inlet portion 7 opened at the corresponding part of the clothing treatment cylinder assembly 2 and the opening 1011. The structure of the support plate 12 is simple, reducing the production cost.

[0104] As Figures 10 - 21 shown, the clothing treatment cylinder assembly 2 includes a cylinder body 21 and an air inlet hood 22.

[0105] Combined Figures 10 - 21 with the illustrated embodiment, the cylinder body 21 includes a cylinder body 211 and a cylinder cover 212. One axial end of the cylinder body 211 has an open mouth 2011, and the cylinder cover 212 is connected to the other axial end of the cylinder body 21. A clothing access opening 2012 is defined in the middle of the cylinder cover 212. Clothes can be placed into or taken out of the clothing treatment cavity 201 through the clothing access opening 2012 defined by the cylinder cover 212.

[0106] One axial end of the cylinder body 21 has an open mouth 2011 and the other end has a clothing access opening 2012. The air inlet hood 22 covers the open mouth 2011 to define a clothing treatment cavity 201 communicating with the clothing access opening 2012 with the cylinder body 21. Among them, the air inlet hood 22 and the cylinder body 21 can be respectively formed and then fixedly connected.

[0107] Among them, at least a part of the air inlet hood 22 extends into the ventilation cavity 101 from the opening 1011 to increase the capacity of the clothing treatment cavity 201, so that the dryer 1000 can process more and larger clothes at the same time.

[0108] Specifically, the air inlet hood 22 has a first extension portion 223 extending away from the cylinder body 21. Through the design of the first extension portion 223 on the air inlet hood 22, the capacity of the laundry treatment chamber 201 is increased, and more and larger laundry items can be processed simultaneously. The first extension portion 223 is provided with an air inlet portion 7 communicating with the laundry treatment chamber 201, and air flow can enter the laundry treatment chamber 201 through the air inlet portion 7 opened on the first extension portion 223.

[0109] Due to the special structure of the first extension portion 223 and the fact that the air flow in the air duct 401 cavity flows radially around the first extension portion 223, different opening methods of the air inlet portion 7 on the first extension portion 223 will greatly affect the distribution and flow rate of the air flow in the laundry treatment chamber 201. Therefore, the air inlet portion 7 includes a first air inlet portion 71, and the first air inlet portion 71 is provided on the peripheral wall 2233 of the first extension portion 223. That is to say, by opening an air inlet structure on the peripheral wall 2233 of the first extension portion 223, the air flow flowing radially along the laundry treatment cylinder assembly 2 can directly enter the laundry treatment chamber 201 through the first air inlet portion 71 provided on the peripheral wall 2233, and there will be no excessive loss during the process of the air flow entering the laundry treatment chamber 201, ensuring the flow rate and flow velocity of the air flow entering the laundry treatment chamber 201, and further ensuring the drying effect of the dryer 1000.

[0110] The air inlet area of the first air inlet portion 71 is S1, and the total air inlet area of the air inlet portion 7 is S. S1 and S satisfy the condition: 0.05 ≤ S1 / S ≤ 1. That is to say, the air inlet area of the first air inlet portion 71 is not less than 5% of the total air inlet area. In other words, there must be an air inlet structure on the peripheral wall 2233 of the first extension portion 223 for the air inlet of the laundry treatment chamber 201. Thus, the air flow flowing radially along the laundry treatment cylinder assembly 2 can directly enter the laundry treatment chamber 201 through the first air inlet portion 71 provided on the peripheral wall 2233, and there will be no excessive loss during the process of the air flow entering the laundry treatment chamber 201, ensuring the flow rate and flow velocity of the air flow entering the laundry treatment chamber 201, and further ensuring the drying effect of the dryer 1000.

[0111] Moreover, S1 / S can be equal to 1. That is to say, the air inlet portion 7 can only include the first air inlet portion 71 provided on the peripheral wall 2233 of the first extension portion 223, and there may be no air inlet structure on the end wall 2232 of the first extension portion 223 and other partial structures on the laundry treatment cylinder assembly 2 corresponding to the through - opening 1011.

[0112] Such as Figure 14As shown, the first air inlet portion 71 includes a plurality of first air inlet holes 711. The plurality of first air inlet holes 711 are arranged at intervals in the axial direction and / or circumferential direction of the peripheral wall 2233 of the first extension portion 223. Thus, the first air inlet holes 711 are evenly distributed on the peripheral wall 2233 of the first extension portion 223. On the one hand, it ensures the uniform weight of the laundry drum assembly 2 in all directions, ensuring that the laundry drum assembly 2 can rotate stably. On the other hand, during the rotation of the laundry drum assembly 2, the air flow can stably enter the laundry processing chamber 201 through the uniformly arranged first air inlet holes 711, ensuring the stability of the air flow in the laundry processing chamber 201.

[0113] According to some embodiments of the present invention, the end wall 2232 of the first extension portion 223 is not provided with the air inlet portion 7, that is, the end wall 2232 of the first extension portion 223 is a non-porous structure. At this time, the end wall 2232 of the first extension portion 223 can be integrated with the air duct housing 13, or the end wall 2232 of the first extension portion 223 can be separated from the air duct housing 13 and arranged at intervals.

[0114] According to some other embodiments of the present invention, referring to Figure 14 , the air inlet portion 7 further includes a second air inlet portion 72. The second air inlet portion 72 is provided on the end wall 2232 of the first extension portion 223. That is to say, part of the air flow can enter the laundry processing chamber 201 through the second air inlet portion 72 provided on the end wall 2232 of the first extension portion 223. Thus, the air inlet area is increased, further increasing the air flow rate and improving the drying effect of the dryer 1000.

[0115] As Figure 14 shown, the second air inlet portion 72 includes a plurality of second air inlet holes 721. The plurality of second air inlet holes 721 are arranged at intervals in the radial direction and / or circumferential direction of the end wall 2232 of the first extension portion 223. Thus, the second air inlet holes 721 are evenly distributed on the end wall 2232 of the first extension portion 223. On the one hand, it ensures the uniform weight of the laundry drum assembly 2 in all directions, ensuring that the laundry drum assembly 2 can rotate stably. On the other hand, during the rotation of the laundry drum assembly 2, the air flow can stably enter the laundry processing chamber 201 through the uniformly arranged second air inlet holes 721, ensuring the stability of the air flow in the laundry processing chamber 201.

[0116] The size of the first extension part 223 affects the volume of the laundry treatment drum assembly 2, and the diameter of the end wall 2232 of the first extension part 223 affects the volume size of the first extension part 223. Wherein, the diameter of the cylinder body 21 is d1, the diameter of the end wall 2232 of the first extension part 223 is d2, and the ratio of d2 to d1 is 0.5 - 1. That is to say, the diameter of the end wall 2232 of the first extension part 223 is at least not less than half of the diameter of the cylinder body 21. Thus, the first extension part 223 can be set large enough to provide sufficient volume for the laundry treatment drum assembly 2 to ensure that the laundry treatment drum assembly 2 has enough volume to accommodate clothes and can process more and larger clothes at the same time.

[0117] Moreover, the first extension part 223 is provided with an air inlet part 7 communicating with the laundry treatment cavity 201, and air flow can enter the laundry treatment cavity 201 through the air inlet part 7 opened on the first extension part 223. Since the air inlet part 7 is arranged on the first extension part 223, the surface area size of the first extension part 223 affects the air inlet area size of the air inlet part 7, thereby affecting the air intake flow rate and air intake speed of the dryer 1000, and further affecting the laundry treatment effect of the dryer 1000. Wherein, the diameter of the cylinder body 21 is d1, the diameter of the end wall 2232 of the first extension part 223 is d2, and the ratio of d2 to d1 is 0.5 - 1. That is to say, the diameter of the end wall 2232 of the first extension part 223 is at least not less than half of the diameter of the cylinder body 21. Thus, the first extension part 223 can have a large enough surface area for the arrangement of the air inlet part 7 to ensure that the laundry treatment drum assembly 2 has a large enough air inlet area, and there will be no excessive loss during the process of air flow entering the laundry treatment cavity 201, ensuring the flow rate and flow velocity of the air flow entering the laundry treatment cavity 201, and further ensuring the drying effect of the dryer 1000.

[0118] As Figure 2 and Figure 15 shown, the end wall 2232 of the first extension part 223 has a structure strengthening part 2231, and the structure strengthening part 2231 can strengthen the structure of the laundry treatment drum assembly 2 at the end wall 2232 of the first extension part 223, especially strengthen the structure at the position of the end wall 2232 of the first extension part 223 of the air inlet cover 22 of the laundry treatment drum assembly 2, ensure the structural strength at the end wall 2232 of the first extension part 223, and prevent the end wall 2232 of the first extension part 223 from deforming or being damaged during installation, transportation, and under high wind pressure conditions.

[0119] Referring to Figure 2 and Figure 15 , the structure strengthening part 2231 includes strengthening convex parts and / or strengthening concave parts to strengthen the end wall 2232 of the first extension part 223 by using the strengthening convex parts and / or strengthening concave parts and ensure the strength of the end wall 2232 of the first extension part 223.

[0120] Combined with Figure 2 and Figure 15 In the illustrated embodiment, the structural strengthening portion 2231 includes: at least one first strengthening portion 22311 and a plurality of second strengthening portions 22312. The first strengthening portion 22311 extends along the circumferential direction of a circumference, that is, the first strengthening portion 22311 is formed as an annular strengthening portion to strengthen the structure of the end wall 2232 of the first extension portion 223 in the circumferential direction of the laundry treatment drum assembly 2, and prevent the end wall 2232 of the first extension portion 223 from deforming under force. The plurality of second strengthening portions 22312 are arranged in the circumferential direction of the circumference and each second strengthening portion 22312 extends along the radial direction of the circumference, that is, the plurality of second strengthening portions 22312 are evenly distributed in the circumferential direction on the end wall 2232 of the first extension portion 223, ensuring the uniform weight of the laundry treatment drum assembly 2 in all directions, ensuring that the laundry treatment drum assembly 2 can rotate stably. Moreover, the plurality of second strengthening portions 22312 are evenly distributed on the end wall 2232 of the first extension portion 223, ensuring the uniform strength of the end wall 2232 of the first extension portion 223, avoiding stress concentration caused by low local strength, and affecting the overall strength and stability of the end wall 2232 of the first extension portion 223 as set.

[0121] As Figure 2 and Figure 15 shown, the first strengthening portion 22311 and the second strengthening portions 22312 are arranged crosswise to utilize the crosswise arrangement of the first strengthening portion 22311 and the second strengthening portions 22312 to improve the continuity of the force when passing through the structural strengthening portion 2231, facilitating the continuous transmission of the force, and further improving the strength of the end wall 2232 of the first extension portion 223.

[0122] As Figures 10 - 21 shown, the end wall 2232 of the first extension portion 223 and the peripheral wall 2233 of the first extension portion 223 are connected with an arc transition. When the air flow passes through the connection between the end wall 2232 of the first extension portion 223 and the peripheral wall 2233 of the first extension portion 223, the air flow can be smoothly guided by the arc transition section, avoiding large resistance when the air flow passes through the turning point, impacting the structure of the first extension portion 223 to cause noise, avoiding the loss of the air flow, and also reducing the punching difficulty during the production process.

[0123] Among them, the angle between the peripheral wall 2233 and the end wall 2232 of the first extension part 223 affects the air intake flow rate of the first air inlet part 71, the volume of the laundry treatment cylinder, the noise during the operation of the dryer 1000, and the punching difficulty during the opening of the air inlet holes in the upper air inlet area. Therefore, the peripheral wall 2233 of the first extension part 223 extends in the direction from the end wall 2232 of the first extension part 223 to the laundry access opening 2012 towards the peripheral wall 2233 of the cylinder body 21, that is to say, the peripheral wall 2233 of the first extension part 223 extends obliquely to increase the air intake flow rate of the first air inlet part 71, thereby increasing the overall air intake flow rate of the laundry treatment cavity 201, ensuring the laundry treatment effect of the dryer 1000, increasing the volume of the laundry treatment cylinder, reducing the noise of the laundry treatment cylinder, improving the user experience, and also reducing the punching difficulty of the first air inlet area, thereby reducing the production cost.

[0124] According to some embodiments of the present invention, the included angle between the peripheral wall 2233 of the first extension part 223 and the plane where the end wall 2232 of the first extension part 223 is located is 20° - 80°. That is to say, the included angle between the peripheral wall 2233 of the first extension part 223 and the plane where the end wall 2232 of the first extension part 223 is located is not less than 20° to avoid the included angle between the peripheral wall 2233 of the first extension part 223 and the plane where the end wall 2232 of the first extension part 223 is located being too small to affect the air volume inside the laundry treatment cavity 201 and the capacity of the laundry treatment cavity 201. The included angle between the peripheral wall 2233 of the first extension part 223 and the plane where the end wall 2232 of the first extension part 223 is located is not greater than 80° to avoid the included angle between the peripheral wall 2233 of the first extension part 223 and the plane where the end wall 2232 of the first extension part 223 is located being too large to cause excessive noise during the operation of the dryer 1000 and affect the punching difficulty of punching holes on the peripheral wall 2233 of the first extension part 223.

[0125] As Figure 7 shown, the shape of the through - opening 1011 is circular to correspond to the shape of the first extension part 223 extending into the ventilation cavity 101, so that the first extension part 223 can be set as large as possible.

[0126] Furthermore, since the through - opening 1011 is communicated with the ventilation cavity 101, the air flow in the ventilation cavity 101 can flow out through the through - opening 1011. When the diameter of the outer peripheral wall of the cylinder body 21 is smaller than the diameter of the through - opening 1011, the air flow will flow out through the gap between the edge of the through - opening 1011 and the outer peripheral wall of the cylinder body 21, resulting in air volume loss. Therefore, the diameter of the outer peripheral wall of the cylinder body 21 is larger than the diameter of the through - opening 1011.

[0127] During the installation of the laundry treatment drum assembly 2, it is prone to collide with the edge of the through port 1011. Since the strength of the edge of the through port 1011 is relatively low and the edge of the through port 1011 is sharp, it will affect the safety of the installation process. Therefore, a protection structure 121 is provided at the edge of the through port 1011, such as Figure 12 and Figure 21 shown. On the one hand, the protection structure 121 can prevent the edge of the through port 1011 from being too sharp and affecting the safety during the installation process. On the other hand, it can improve the strength of the air duct housing assembly 1 at the edge of the through port 1011 and prevent the edge of the through port 1011 from deforming when affected by external forces at the edge of the through port 1011.

[0128] Among them, the protection structure 121 can be a flanging structure or a curling structure.

[0129] Such as Figure 2 、 Figure 4 、 Figure 6 and Figure 7 shown, the air duct housing assembly 1 also has an air passing port 1012 located on one side of the through port 1011. A wind wheel 8 is provided in the ventilation cavity 101 and is disposed opposite to the air passing port 1012.

[0130] Such as Figure 3 and Figure 4 shown, the dryer 1000 further includes a mounting base 4. The mounting base 4 defines an air duct 401 to connect the laundry treatment cavity 201 and the ventilation cavity 101, and a heating element is provided in the air duct 401. During the operation of the dryer 1000, the wet and cold air flow in the laundry treatment cavity 201 passes through the air duct 401 defined by the mounting base 4, is heated and dehumidified in the air duct 401, passes through the air passing port 1012, and enters the ventilation cavity 101 defined by the air duct housing assembly 1 under the drive of the wind wheel 8. The dry and hot air flow in the ventilation cavity 101 then enters the laundry treatment cavity 201 through the air inlet part 7 of the laundry treatment drum assembly 2 to perform the drying treatment on the clothes.

[0131] According to some embodiments of the present invention, the dryer 1000 further includes: a heat pump system, the heat pump system includes an evaporator, a condenser and a compressor, and the heating element includes the evaporator and the condenser. In the laundry treatment cavity 201, the dry and hot air passes through the wet clothes, and the remaining moisture on the clothes absorbs heat, and the air becomes wet and hot air. The wet and hot air enters the air duct 401. The wet and hot air is converted into dry and cold air after passing through the condenser, and the water vapor in the air condenses into water droplets and is discharged. At this time, the dry and cold air continues to be heated and pressurized by the compressor and the evaporator.

[0132] Such as Figure 3 and Figure 4As shown, the dryer 1000 further includes: a support member 6, which is disposed opposite to the air duct housing assembly 1, and together with the air duct housing assembly 1, limits the laundry drum assembly 2 at both axial ends of the laundry drum assembly 2. Both ends of the laundry drum assembly 2 are respectively supported by the air duct housing assembly 1 and the support member 6 to ensure the stability of the setting of the laundry drum assembly 2.

[0133] According to some embodiments of the present invention, the air inlet hood 22 defines an air inlet cavity, the air inlet cavity includes a first chamber 20142014 and a second chamber 2015, the air inlet hood 22 includes a second extension portion 226 extending away from the cylinder body 21, the second extension portion 226 is a non-porous structure and defines the second chamber 2015. Wherein, the second extension portion 226 is located between the first extension portion 223 and the cylinder body 21 so that the second chamber 2015 communicates between the first chamber 20142014 and the inner cavity of the cylinder body 21.

[0134] The arrangement of the first extension portion 223 and the second extension portion 226 makes the air inlet hood 22 form a stepped structure in the axial direction of the laundry drum assembly 2, which is convenient for the forming and processing of the air inlet hood 22. Moreover, a part of the space is reserved at the rear of the laundry drum assembly 2 for the installation of other structures, and the second chamber 2015 further increases the volume of the laundry processing cavity 201, and the dryer can process more laundry at the same time.

[0135] According to some embodiments of the present invention, the air inlet hood 22 includes an annular hood body 221 and a middle hood body 222.

[0136] Next, refer to Figures 10 - 17 Describe the first specific embodiment of the dryer 1000 of the present invention.

[0137] Among them, as Figures 10 - 17 shown, the air inlet hood 22 is an integral part, and the annular hood body 221 and the middle hood body 222 are integrally formed. And there is an arc transition between the two, which avoids the large resistance when the air flow passes through the turning point, impacts the structure to cause noise, avoids the loss of air flow, and also reduces the punching difficulty in the production process.

[0138] The air inlet hood 22 is an integral part. At this time, during the operation of the drying cylinder, the entire air inlet hood 22 rotates relative to the air duct housing assembly 1. In order to ensure the stable rotation of the laundry drum assembly 2, there is a gap between the air duct housing assembly 1 and the laundry drum assembly 2, and the air flow will flow out through the gap, resulting in a loss of air volume. Therefore, a sealing ring 3 is provided between the air inlet hood 22 and the air duct housing assembly 1, and the sealing ring 3 surrounds the outside of the through port 1011, that is, also surrounds the outside of the air inlet portion 7, so as to achieve the sealing between the air duct housing assembly 1 and the laundry drum assembly 2.

[0139] Further, since the air inlet hood 22 is rotatable relative to the air duct housing assembly 1, in order to fix the sealing ring 3 and prevent the structure of the sealing ring 3 from falling off and deforming during the rotation of the air inlet hood 22 relative to the air duct housing assembly 1, the sealing ring 3 is fixed to one of the air inlet hood 22 and the air duct housing assembly 1, and the other is in movable cooperation with the sealing ring 3.

[0140] Referring to Figure 12 , the protection structure 121 includes a limiting flange. Specifically, the edge of the through opening 1011 has a limiting flange extending towards the direction close to the cylinder body 21. The sealing ring 3 is sleeved outside the limiting flange. That is to say, the limiting flange can limit the sealing ring 3, providing an installation position for the setting of the sealing ring 3, and preventing the sealing ring 3 from moving around and affecting the sealing performance.

[0141] Moreover, the limiting flange is also the protection structure 121 provided at the edge of the through opening 1011, and the setting of the limiting flange is more practical.

[0142] Referring to Figure 12 , the minimum compression amount of the sealing ring 3 along the cylinder body 21 is A. When the sealing ring 3 is compressed until it is compressed to the minimum thickness A, the distance between the air duct housing assembly 1 and the laundry treatment cylinder assembly 2 is A, and they cannot approach each other under the limiting action of the sealing ring 3. The included angle between the peripheral wall 2233 of the first extension part 223 and the central axis of the cylinder body 21 is α, and the gap between the edge of the through opening 1011 and the peripheral wall 2233 of the first extension part 223 is greater than Atanα. Thus, when the sealing ring 3 is compressed to the minimum thickness, the gap between the edge of the through opening 1011 and the peripheral wall 2233 of the first extension part 223 is greater than Atanα, the projection of the through opening 1011 on the laundry treatment cylinder covers the entire first extension part 223, the structures around the through opening 1011 do not coincide with the first extension part 223 axially, and the sealing ring 3 is arranged on the outer ring of the first extension part 223, improving the air flow through rate.

[0143] As Figures 10 - 13 and Figure 17 shown, the sealing ring 3 is connected to the air duct housing assembly 1 and is in movable cooperation with the annular cover body 221. During the rotation of the annular cover body 221 relative to the air duct housing assembly 1, the annular cover body 221 and the sealing ring 3 rotate relative to each other. The annular cover body 221 has an annular abutting protrusion 225 extending in the direction away from the cylinder body 21. The annular abutting protrusion 225 abuts against and is in movable cooperation with the sealing ring 3. By the cooperation of the abutting protrusion and the sealing ring 3, the pressure of the contact part between the annular cover body 221 and the sealing ring 3 can be increased, preventing the sealing ring 3 from separating from the sealing ring 3, resulting in sealing failure, air leakage, affecting the air volume in the dryer 1000 and causing noise, affecting the use experience of the dryer 1000.

[0144] There is a gap between the edge of the through - port 1011 and the peripheral wall 2233 of the first extension part 223, so as to avoid friction caused by mutual contact between the two, which affects the normal rotation of the laundry - processing drum assembly 2 and the service life of the dryer 1000. Also, it avoids the generation of noise caused by air flow passing through a narrow space, improves the user experience of the dryer 1000. Further, since the edge of the through - hole forms a protection structure 121, there is a gap between the protection structure 121 and the first extension part 223 in the radial direction of the cylinder body 21.

[0145] Further, referring to Figure 12 , in order to avoid friction caused by mutual contact between the protection structure 121 and the laundry - processing drum assembly 2, which affects the normal rotation of the laundry - processing drum assembly 2, there is a gap between the protection structure 121 and the air - inlet cover 22 in the axial direction of the cylinder body 21, so as to avoid contact between the protection structure 121 and the air - inlet cover 22, which affects the relative rotation of the laundry - processing drum assembly 2 with respect to the air - duct housing assembly 1.

[0146] Among them, the minimum thickness of the sealing ring 3 in the compressed state is greater than the width of the limiting flange, so that when the sealing ring 3 is compressed to the minimum thickness, there is a gap between the edge of the limiting flange and the laundry - processing drum assembly 2, avoiding friction caused by mutual contact between the limiting flange and the laundry - processing drum assembly 2, which affects the normal rotation of the laundry - processing drum assembly 2 and the service life of the dryer 1000.

[0147] Next, referring to Figures 18 - 21 describe the second specific embodiment of the dryer 1000 of the present invention.

[0148] Among them, the annular cover body 221 and the cylinder body 21 are connected after being formed separately. Referring to Figures 18 - 21 , at this time, the outer ring of the annular cover body 221 is connected to the edge of the open port 2011, and the inner ring of the annular cover body 221 defines a ventilation port 2013.

[0149] The middle cover body 222 covers the ventilation port 2013 to ensure the sealing of the laundry - processing drum assembly 2. The air - inlet part 7 can be arranged at the part of the middle cover body 222 opposite to the through - port 1011. And except for the air - inlet part 7, the through - port 1011 is sealed by the middle cover body 222, and the air flow can only flow out of the ventilation cavity 101 through the air - inlet part 7, and cannot flow out through the gap between the middle cover body 222 and the air - duct housing assembly 1. The middle cover body 222 and the air - duct housing assembly 1 are integrally formed or fixedly connected after being formed separately.

[0150] At least a part of the middle cover body 222 extends into the ventilation cavity 101 from the through - port 1011, so as to increase the volume of the laundry - processing cavity 201, increase the air - inlet area of the air - inlet part 7, and improve the drying effect of the dryer 1000.

[0151] Such as Figures 18 - 21As shown, since the middle cover 222 is fixedly connected to the air duct housing assembly 1, and the annular cover 221 rotates relative to the air duct housing assembly 1 along with the cylinder body 21, the annular cover 221 rotates relative to the middle cover 222. In order to avoid friction during the relative rotation between the two, there is a gap between the middle cover 222 and the annular cover 221. Further, in order to seal the laundry treatment chamber 201, a sealing ring 224 is provided between the annular cover 221 and the middle cover 222. The sealing ring 224 is arranged around the ventilation opening 2013 to ensure that the middle cover 222 and the sealing ring 224 can jointly seal the ventilation opening 2013 and ensure the sealing effect at the ventilation opening 2013.

[0152] Further, since the annular cover 221 is rotatable relative to the middle cover 222, and in order to fix the sealing ring 224 and prevent the structure of the sealing ring 224 from falling off and deforming during the rotation of the annular cover 221 relative to the middle cover 222, the sealing ring 224 is fixedly connected to one of the annular cover 221 and the middle cover 222 and is movably matched with the other.

[0153] Specifically, in combination with Figures 18 - 21 the embodiment shown, the annular cover 221 has a first annular flange 2211 extending away from the cylinder body 21, and the middle cover 222 has an annular support protrusion 2221 extending towards the cylinder body 21. The first annular flange 2211 is sleeved outside the annular support protrusion 2221. By providing a sealing structure between the first annular flange 2211 and the annular support protrusion 2221, the sealing of the laundry treatment chamber 201 can be achieved. The arrangement of the first annular flange 2211 and the annular support protrusion 2221 increases the sealing area of the sealing ring 224 and ensures the sealing effect of the sealing ring 224.

[0154] At least a part of the sealing ring 224 is arranged between the first annular flange 2211 and the annular support protrusion 2221, and the sealing ring 224 is fixedly connected to the first annular flange 2211. The fixed connection method can adopt bonding or the like to facilitate the installation and connection of the sealing ring 224.

[0155] In some embodiments, the sealing ring 224 is fixedly connected to the first annular flange 2211 by bonding. The sealing ring 224 is movably matched with the annular support protrusion 2221 to ensure that the annular cover 221 can rotate relative to the middle cover 222.

[0156] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. 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 can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0157] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A dryer, characterized in that, Comprising: An air duct housing assembly that defines a ventilation cavity with an opening on one side; A laundry treatment drum assembly that defines a laundry treatment cavity. A part of the laundry treatment drum assembly extends into the ventilation cavity from the opening and has an air inlet portion that communicates the ventilation cavity and the laundry treatment cavity.

2. The dryer according to claim 1, characterized in that, The air duct housing assembly is provided with a support portion that contacts the outer surface of the laundry treatment drum assembly to support the laundry treatment drum assembly.

3. The dryer according to claim 2, characterized in that, The support portion includes support rollers.

4. The dryer according to claim 2, characterized in that, The air duct housing assembly includes: A support plate with the opening provided thereon; An air duct housing that is disposed on one side in the thickness direction of the support plate and covers the opening, and the air duct housing defines the ventilation cavity; Wherein, the support portion is disposed on the other side in the thickness direction of the support plate.

5. The dryer according to claim 1, wherein, The laundry treatment drum assembly includes: A drum with a laundry loading and unloading opening at one end and an open end at the other end; An air inlet hood that covers the open end to define the laundry treatment cavity with the drum. At least a part of the air inlet hood extends into the ventilation cavity from the opening.

6. The dryer according to claim 5, characterized in that, The air inlet hood includes a first extension portion that extends into the ventilation cavity and defines a first chamber communicating with the inner cavity of the drum. The laundry treatment cavity includes the inner cavity of the drum and the first chamber, and the air inlet portion is provided on the first extension portion.

7. The dryer according to claim 5, characterized in that, The shape of the opening is circular, and the diameter of the outer peripheral wall of the drum is greater than the diameter of the opening.

8. The dryer according to claim 5, characterized in that, The edge of the opening has a flanging structure or a curling structure.

9. The dryer according to claim 5, characterized in that, The air inlet hood is an integral part.

10. The dryer according to claim 9, characterized in that, A sealing ring is provided between the air inlet hood and the air duct housing assembly, and the sealing ring surrounds the outside of the opening.

11. The dryer according to claim 10, characterized in that, The air inlet hood is rotatable relative to the air duct housing assembly. One of the air inlet hood and the air duct housing assembly is fixedly connected to the sealing ring and the other is movably engaged with the sealing ring.

12. The dryer according to claim 5, characterized in that, The air inlet hood includes: An annular hood body whose outer ring is connected to the edge of the open end, and the inner ring of the annular hood body defines a ventilation opening; A middle hood body that covers the ventilation opening and is fixedly connected to the air duct housing assembly. At least a part of the middle hood body extends into the ventilation cavity from the opening, and the air inlet portion is provided on the middle hood body.

13. The dryer according to claim 12, characterized in that, A sealing ring is provided between the annular hood body and the middle hood body, and the sealing ring surrounds the ventilation opening.

14. The dryer according to claim 13, characterized in that, The annular hood body is rotatable relative to the middle hood body. One of the annular hood body and the middle hood body is fixedly connected to the sealing ring and the other is movably engaged with the sealing ring.

15. The dryer according to any one of claims 1-14, characterized in that, The dryer further includes a mounting base that defines an air duct to communicate the laundry treatment cavity and the ventilation cavity, and a heating element is provided in the air duct.

16. The dryer according to claim 15, characterized in that, The dryer further includes: A heat pump system that includes an evaporator, a condenser, and a compressor, and the heating element includes the evaporator and the condenser.

17. The dryer according to any one of claims 1-14, characterized in that, Also including: A support member that is disposed opposite to the air duct housing assembly, and both ends of the laundry treatment drum assembly are respectively supported by the air duct housing assembly and the support member.

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