Direct-drive efficient driving module for clothes dryer and clothes dryer

Abstract

The utility model relates to a direct-drive efficient driving module for a clothes dryer, which comprises a stator assembly, a rotor assembly and a speed reducer module, the speed reducer module is fixed on the radial inner side of the stator assembly, and the rotor assembly is rotatably arranged on the radial outer side of the stator assembly. The speed reducer module comprises a shell, an outer gear ring, a planet wheel, a sun wheel shaft, a planet wheel mounting support and a speed reducer output shaft, the sun wheel shaft and the speed reducer output shaft are rotationally connected with the two sides of the shell correspondingly, one end of the speed reducer output shaft penetrates out of the shell, and the sun wheel is fixed to the sun wheel shaft; the outer gear ring is fixed to the inner wall of the shell and is in meshing transmission with the sun gear through the planet gear, the planet gear shaft is rotationally arranged in the middle of the planet gear, and the two ends of the planet gear shaft are fixed to the planet gear mounting support and the speed reducer output shaft respectively. The utility model has the advantages of high integral integration, high transmission efficiency, more energy conservation, favorable cost reduction and more convenience in subsequent maintenance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor technical field, especially relate to direct drive high -efficient formula drive module for clothes dryer and clothes dryer. BACKGROUND

[0002] Traditional clothes dryer, all adopt with the belt connection drive between the transmission motor and the clothes dryer barrel drive wheel, such traditional transmission mode, there is transmission attenuation, cause energy utilization efficiency reduces, and easy to appear noise, and the belt transmission mechanism, its belt itself is belong to the vulnerable parts, service life is not long, affect the whole machine service life.

[0003] Chinese patent CN216514732U discloses a coaxial transmission clothes dryer, drive the clothes dryer drum through the gear reducer on the output shaft of the driving motor, although compared with the original belt drive, improve transmission efficiency, but the driving motor and the reducer of this clothes dryer are independent of each other, low integration, large overall space occupation (especially the axial length is longer), requires the reducer and the motor to be in the coaxial position during installation, high installation requirement, low assembly efficiency. UTILITY MODEL CONTENTS

[0004] In order to solve the above technical problems, the first purpose of the utility model is to provide a direct drive high-efficiency drive module for clothes dryer, which can maintain in the high-efficiency working speed area, has high integration, adopts modular design, is easy to disassemble and assemble, and has high production efficiency; the second purpose of the utility model is to provide a clothes dryer.

[0005] In order to realize the first purpose of the utility model, the utility model adopts the following technical scheme:

[0006] The direct drive high-efficiency drive module for clothes dryer comprises a stator assembly, a rotor assembly and a reducer module, the stator assembly is annular, the reducer module is fixed to the radial inner side of the stator assembly, the rotor assembly is rotationally arranged on the radial outer side of the stator assembly, the reducer module comprises a shell, an outer gear ring, a planetary gear, a sun gear shaft, a planetary gear mounting bracket and a reducer output shaft, the sun gear shaft and the reducer output shaft are rotationally connected with the two sides of the shell respectively, one end of the reducer output shaft penetrates out of the shell, a sun gear is fixed on the sun gear shaft, and the end of the sun gear shaft close to the shell is in transmission connection with the rotor assembly, the outer gear ring is fixed on the inner wall of the shell and is in meshing transmission with the sun gear through the planetary gear, a planetary gear shaft is rotationally arranged in the middle of the planetary gear, and the two ends of the planetary gear shaft are fixed with the planetary gear mounting bracket and the reducer output shaft respectively.

[0007] The utility model discloses a motor's rotor assembly rotates, drives sun wheel axle rotation, and further makes sun wheel drive planetary gear rotate around gear ring, and the corresponding rotation of planetary gear mounting support and speed reducer output shaft also can take place, and speed reducer output shaft can drive corresponding equipment.

[0008] As a preferred scheme, the housing comprises fixed end cover A and end cover B, and the mounting cavity is formed between the end cover A and the end cover B, the middle part of the end cover A is outwardly protruded to form a bearing chamber A, the speed reducer output shaft comprises a shaft body and a mounting plate fixed to one end of the shaft body, and the other end of the shaft body is rotatably connected with the end cover A through a bearing A arranged in the bearing chamber A.

[0009] As a preferred scheme, the mounting plate is integrally formed with the output shaft, and the output shaft is further provided with a bearing chamber B at one end, and one end of the sun wheel axle is rotatably connected with the speed reducer output shaft through a bearing B arranged in the bearing chamber.

[0010] As a preferred scheme, the bearing chamber A on the end cover A is further provided with a flange, and the output shaft and the flange are further provided with a shaft seal. The setting of the shaft seal can avoid the overflow of lubricating oil in the speed reducer module.

[0011] As a preferred scheme, the middle part of the end cover B is also outwardly protruded to form a bearing chamber C, and the other end of the sun wheel axle is rotatably connected with the end cover B through a bearing C arranged in the bearing chamber C. The sun wheel axle (input) and the speed reducer output shaft (output) are coaxially rotatably arranged by the bearing, which improves the stability of the motor operation, helps to reduce noise and prolong the service life.

[0012] As a preferred scheme, the bearing chamber C is provided with a through hole, the other end of the sun wheel axle penetrates through the bearing C and the through hole, and the middle part of the rotor assembly is drivingly connected with the end part of the sun wheel axle through interference fit, key groove fit or tooth groove fit.

[0013] As a preferred scheme, the end part of the other end of the sun wheel axle is provided with a transmission tooth, and a step surface is formed between the transmission tooth and the sun wheel axle, the middle part of the rotor assembly is provided with a rotor spline, the middle part of the rotor spline is provided with a gear ring and is inwardly protruded, the rotor spline is axially abutted on the step surface and the inner ring of the bearing C through a limiting bolt, and the gear ring of the rotor spline is meshingly drivingly connected with the transmission tooth of the sun wheel axle.

[0014] As a preferred scheme, the middle part of the rotor assembly forms a notch, the rotor spline is arranged in the notch, the notch is arranged outside the bearing chamber C, and a gap is left between the notch and the bearing chamber. The outer ring of the bearing chamber C, the inner ring of the notch and the inwardly protruded structure of the rotor spline form a reciprocating rotation labyrinth structure, which helps to prevent the leakage of lubricating oil in the speed reducer module.

[0015] As a preferred solution, the inner ring of the stator assembly is provided with a stator mounting flange, the housing is provided with a ring of outer flanges, and the stator mounting flange and the outer flanges are fixed by bolts. The above structure makes the reducer module and the stator assembly have a preliminary positioning structure when being installed, thereby improving the convenience of installation.

[0016] In order to realize the second purpose of the utility model, the utility model adopts the following technical solutions:

[0017] A clothes dryer adopts the integrated drive module of any one of the above.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] The utility model adopts an outer rotor disc type motor, and simultaneously fixes the reducer module in the stator assembly, so that the outer rotor disc type motor can maintain a high-efficiency working speed area of 300-500 rpm through the reducer module; the motor energy conversion efficiency is as high as 85% or more, which can effectively save energy, reduce the motor cost and motor temperature rise; and the input end of the reducer module is connected with the rotor, which greatly reduces the axial length of the drive module, makes the overall integration degree high, and has small volume; simultaneously, since the reducer adopts a modular structure, the disassembly and assembly are easy, and subsequent maintenance and replacement are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings accompanying the specification provide further understanding of the present application, the illustrative embodiments thereof, and the explanations of the present application, and do not constitute limitations to the present application.

[0021] Figure 1 is a whole structure schematic view of the utility model;

[0022] Figure 2 is a cross-section structure schematic view of the utility model;

[0023] Figure 3 and Figure 4 are explosion structure schematic views of the utility model at two different angles;

[0024] The figure signs are as follows: 1, stator assembly; 11, stator mounting flange; 2, rotor assembly; 21, rotor spline; 3, reducer module; 30, reducer output shaft; 301, bearing A; 302, shaft seal; 31, end cover A; 32, end cover B; 321, outer flange; 33, sun gear; 331, bearing B; 332, bearing C; 34, planetary gear mounting support; 35, planetary gear; 36, planetary gear shaft; 37, outer ring gear; 4, limit bolt. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed description is illustrative only, and is intended to provide further description in connection with the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs.

[0026] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0027] In addition, in the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more, unless otherwise explicitly limited.

[0029] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can include that first and second features are directly contacted, also can include that first and second features are not directly contacted and is contacted through other feature between them. Moreover, first feature is "on", "above" and "on" second feature, includes that first feature is directly above and obliquely above second feature, or just indicates that first feature horizontal height is higher than second feature. First feature is "under", "below" and "under" second feature, includes that first feature is directly below and obliquely below second feature, or just indicates that first feature horizontal height is less than second feature.

[0031] The utility model is further explained below in combination with the drawings and examples:

[0032] As Figures 1 to 4 The clothes dryer direct drive high efficiency type drive module, including stator subassembly 1, rotor subassembly 2 and reducer module 3, the stator subassembly 1 is annular, the reducer module 3 is fixed in the radial inner side of stator subassembly 1, the inner ring of stator subassembly 1 is equipped with stator mounting flange 11, the shell of reducer module 3 is equipped with a circle of outer convex edge 321, when installing, stator subassembly 1 is set on reducer module 3, and make stator mounting flange 11 and the outer convex edge abut, then lock again through bolt;The rotor subassembly 2 rotationally arranged in the radial outer side of stator subassembly 1, and with the transmission connection of reducer module's input end.

[0033] As Figures 2 to 4 The reducer module is a one-stage planetary reducer, adopts the design of the reduction ratio of 5:1 to 7:1 interval, and the reduction ratio of 6.88:1 is selected in the embodiment, the working speed of the drive module is 250rpm to 350rpm, and this speed area is the high-efficiency area of the motor working of the drive module. The motor energy conversion efficiency is more than 85%, which can effectively save energy, reduce the cost of the motor and the temperature rise of the motor.

[0034] The reducer module includes a shell, an outer gear ring 37, a planetary gear 35, a sun gear shaft 33, a planetary gear mounting bracket 34, and a reducer output shaft 30. The sun gear shaft 33 and the reducer output shaft 30 are respectively rotatably connected to the two sides of the shell, and one end of the reducer output shaft 30 penetrates the shell. A circle of transmission teeth is also provided on the outer wall of the penetrated shell portion to facilitate connection and transmission with the equipment. The sun gear is fixed on the sun gear shaft 33, and the sun gear is integrally formed with the sun gear shaft 33. The end of the sun gear shaft 33 close to the shell is in transmission connection with the rotor assembly 2. The outer gear ring 37 is fixed on the inner wall of the shell and is in meshing transmission with the sun gear through the planetary gear 35. The planetary gear shaft 36 is rotatably arranged in the middle of the planetary gear 35, and the two ends of the planetary gear shaft 36 are respectively fixed on the mounting plate of the planetary gear mounting bracket 34 and the reducer output shaft 30.

[0035] The three planetary gears are each embedded with a planetary gear shaft in the middle through a bearing, the three planetary gear shafts are equidistantly arranged on the bottom plate of the planetary gear mounting bracket 34 and the reducer output shaft 30, the rotor assembly drives the sun gear shaft to rotate, thereby driving the planetary gear to rotate around the ring gear, and the planetary gear mounting bracket 34 and the reducer output shaft 30 also rotate correspondingly, so that the reducer output shaft 30 can drive the corresponding equipment.

[0036] The shell comprises the end cover A 31 and the end cover B 32 which are fixed to each other, and the mounting cavity is formed between the end cover A 31 and the end cover B 32, the middle part of the end cover A 31 is outwardly protruded to form a bearing chamber A, the reducer output shaft 30 comprises a shaft body and a mounting plate fixed to one end of the shaft body, and the other end of the shaft body is rotatably connected with the end cover A 31 through a bearing A 301 arranged in the bearing chamber A. A flange is further arranged outside the bearing chamber A of the end cover A 31, and a shaft seal 302 is further arranged between the shaft body and the flange. The arrangement of the shaft seal can prevent the lubricating oil in the reducer module from overflowing.

[0037] The mounting plate is integrally formed with the shaft body, one end of the shaft body is further provided with a bearing chamber B, and one end of the sun gear shaft 33 is rotatably connected with the reducer output shaft 30 through a bearing B 331 arranged in the bearing chamber. The sun gear shaft 33 (input) and the reducer output shaft 30 (output) are coaxially arranged by using the bearing, which improves the stability of the motor operation, helps to reduce noise and prolong the service life.

[0038] The middle part of the end cover B 32 is also outwardly protruded to form a bearing chamber C, and the other end of the sun gear shaft 33 is rotatably connected with the end cover B 32 through a bearing C 332 arranged in the bearing chamber C. The bearing chamber C is provided with a through hole, the other end of the sun gear shaft 33 penetrates through the bearing C 332 and the through hole, and the middle part of the rotor assembly is drivingly connected with the end part of the sun gear shaft 33 through interference fit, key groove fit or tooth groove fit.

[0039] In this embodiment, the end part of the other end of the sun gear shaft 33 is integrally formed with a transmission tooth, and a stepped surface is formed between the transmission tooth and the sun gear shaft 33, the rotor assembly can be made of BMC or PP material, and a metal rotor spline 21 is embedded in the middle part, the middle part of the rotor spline 21 is provided with a ring gear and protrudes inwardly, the rotor spline 21 is axially pressed on the stepped surface and the inner ring of the bearing C 332 through a limiting bolt 4, and the ring gear of the rotor spline 21 is in meshing transmission with the transmission tooth of the sun gear shaft 33.

[0040] The middle part of the rotor assembly 2 forms a recess, the rotor spline 21 is arranged in the recess, the recess is sleeved outside the bearing chamber C, and a gap is left between the recess and the bearing chamber. The outer ring of the bearing chamber C, the inner ring of the recess, and the inner convex structure of the rotor spline form a reciprocating rotation labyrinth structure, which helps to prevent leakage of lubricating oil in the speed reducer module.

[0041] The utility model discloses still provide a kind of clothes dryer, the direct drive high-efficiency type drive module for clothes dryer of above has been adopted.

[0042] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments without departing from the principles and purposes of the present application within the scope of the present application. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belongs to the scope of the technical scheme of the present application.

Claims

1. A direct-drive high-efficiency drive module for a clothes dryer, comprising a stator assembly (1), a rotor assembly (2), and a reducer module (3), characterized in that: The stator assembly (1) is annular, the reducer module (3) is fixed on the radial inner side of the stator assembly (1), and the rotor assembly (2) is rotatably disposed on the radial outer side of the stator assembly (1). The reducer module includes a housing, an external gear ring (37), planetary gears (35), a sun gear shaft (33), a planetary gear mounting bracket (34), and a reducer output shaft (30). The sun gear shaft (33) and the reducer output shaft (30) are rotatably connected to the two sides of the housing, and the reducer... One end of the output shaft (30) of the reducer extends out of the housing. A sun gear is fixed on the sun gear shaft (33), and the end of the sun gear shaft (33) near the housing is connected to the rotor assembly (2) for transmission. The external gear ring (37) is fixed on the inner wall of the housing and is driven by meshing with the sun gear through the planet gear (35). A planet gear shaft (36) is rotatably arranged in the middle of the planet gear (35), and the two ends of the planet gear shaft (36) are fixed to the planet gear mounting bracket (34) and the reducer output shaft (30) respectively.

2. The direct-drive high-efficiency drive module for a clothes dryer according to claim 1, characterized in that, The housing includes end cap A (31) and end cap B (32) fixed to each other, and an installation cavity is formed between end cap A (31) and end cap B (32). The middle part of end cap A (31) protrudes outward to form a bearing chamber A. The reducer output shaft (30) includes a shaft body and a mounting plate fixed to one end of the shaft body. The other end of the output shaft is rotatably connected to end cap A (31) through bearing A (301) set in bearing chamber A.

3. The direct-drive high-efficiency drive module for a clothes dryer according to claim 2, characterized in that, The mounting plate is integrally formed with the output shaft, and one end of the output shaft is provided with a bearing chamber B. One end of the sun gear shaft (33) is rotatably connected to the reducer output shaft (30) through the bearing B (331) provided in the bearing chamber.

4. The direct-drive high-efficiency drive module for a clothes dryer according to claim 2, characterized in that, The bearing chamber A on the end cover A (31) is also provided with a flange, and a shaft seal (302) is provided between the output shaft and the flange.

5. The direct-drive high-efficiency drive module for a clothes dryer according to claim 2, characterized in that, The middle part of the end cap B (32) also protrudes outward to form a bearing chamber C, and the other end of the sun gear shaft (33) is rotatably connected to the end cap B (32) through the bearing C (332) set in the bearing chamber C.

6. The direct-drive high-efficiency drive module for a clothes dryer according to claim 5, characterized in that, The bearing housing C is provided with a through hole, and the other end of the sun gear shaft (33) passes through the bearing C (332) and the through hole. The middle part of the rotor assembly is connected to the end of the sun gear shaft (33) by interference fit, keyway fit or tooth groove fit.

7. The direct-drive high-efficiency drive module for a clothes dryer according to claim 6, characterized in that, The other end of the sun gear shaft (33) is provided with a transmission tooth, and a stepped surface is formed between the transmission tooth and the sun gear shaft (33). The rotor assembly is provided with a rotor spline (21) in the middle. The rotor spline (21) is provided with a toothed ring in the middle and protrudes inward. The rotor spline (21) is axially pressed against the stepped surface and the inner ring of the bearing C (332) by a limiting bolt (4). The toothed ring of the rotor spline (21) meshes with the transmission tooth of the sun gear shaft (33) for transmission.

8. The direct-drive high-efficiency drive module for a clothes dryer according to claim 7, characterized in that, The rotor assembly (2) has a notch in the middle, the rotor spline (21) is set in the notch, the notch is fitted on the outside of the bearing chamber C, and there is a gap between the notch and the bearing chamber.

9. The direct-drive high-efficiency drive module for a clothes dryer according to claim 1, characterized in that, The stator assembly (1) has a stator mounting flange (11) on its inner ring, and the housing has an outer protrusion (321). The stator mounting flange (11) and the outer protrusion (321) are fixed together by bolts.

10. A clothes dryer, characterized in that: The dryer uses the direct-drive high-efficiency drive module as described in any one of claims 1 to 9.

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