Washing machine fan motor

Abstract

The utility model discloses a fan motor of a washing machine, which comprises an outer shell, and a coaxial inner shell is arranged in the outer shell; a stator and a rotor corresponding to the stator are arranged in the inner shell; a first rotating shaft and a second rotating shaft are fixedly arranged at the two ends of the rotor correspondingly, and the ends, away from the rotor, of the first rotating shaft and the second rotating shaft rotationally penetrate out of the corresponding end plates of the inner shell. A plurality of heat dissipation switch assemblies are arranged on the circumferential wall face of the inner shell and used for guiding heat of the inner shell to the outside. A plurality of heat dissipation through holes are uniformly formed in the circumferential wall surface of the outer shell; and a fan is fixedly arranged on the circumferential outer side, between the inner shell and the outer shell, of the first rotating shaft in a sleeving manner. According to the fan motor of the washing machine, rapid and direct heat dissipation is achieved, the heat dissipation effect is good, and the heat dissipation structure is arranged on the body in the motor and does not occupy other space in the washing machine additionally.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor heat dissipation technical field especially relates to a washing machine fan motor. BACKGROUND

[0002] The stator and rotor of the motor of washing machine produce a large amount of heat in the working process under long-term work, wherein the heat of the stator mainly comes from the resistance loss produced when the current passes through the winding, and the heat of the rotor mainly comes from the resistance loss produced when the current flows in the conductor, if the heat is not dissipated in time, the motor will be overheated, and then the service life of the motor is affected, and the washing machine generally adopts the heat dissipation mode such as setting the heat dissipation hole on the wall plate of the washing machine to keep the air circulation inside and outside or water cooling to dissipate heat, the heat dissipation effect is poor or an additional water cooling structure needs to be set, and other spaces inside the washing machine need to be occupied, the washing machine fan motor is provided, the heat dissipation assembly is arranged on the motor shell, is used for quickly dissipating the heat generated by itself, and the heat dissipation effect is improved. SUMMARY

[0003] In view of the above defects or deficiencies in the prior art, it is expected to provide a washing machine fan motor.

[0004] The washing machine fan motor provided by the utility model, comprising a cylindrical external shell, the internal coaxial internal shell is arranged in the external shell, and the end plate is fixedly arranged at the both ends of the internal shell and the external shell, the stator and the rotor corresponding to the stator are fixedly arranged in the internal shell, the first rotating shaft and the second rotating shaft are fixedly arranged at the both ends of the rotor respectively, the first rotating shaft and the second rotating shaft are rotatably arranged on the corresponding end plate of the internal shell at the end away from the rotor, a plurality of heat dissipation switch assemblies are arranged on the top of the circumferential wall surface of the internal shell outside, which are used for leading the heat of the internal shell to the outside, a plurality of heat dissipation through holes are uniformly arranged on the circumferential wall surface of the external shell, the first rotating shaft is rotatably connected between the end away from the rotor and the corresponding end plate of the external shell, the second rotating shaft is rotatably arranged on the corresponding end plate of the external shell at the end away from the rotor, and the fan is fixedly arranged on the circumferential outside of the internal shell and the external shell.

[0005] Further, the heat dissipation switch assembly is arranged on the circumferential wall surface of the internal shell and located at the both ends of the stator, a plurality of heat dissipation switch assemblies are arranged on different busbars of the internal shell respectively, and the included angle between the radii of the two busbars corresponding to the two heat dissipation switch assemblies located at the outermost side of the circumferential direction of the internal shell is less than 25 °.

[0006] Further, the heat dissipation switch assembly comprises a tapered hole arranged on a wall surface of the inner shell, the tapered hole is used for dissipating heat inside the inner shell to outside; a cover plate is arranged on a circumferential wall surface of the outer side of the inner shell and is hinged corresponding to the tapered hole, the cover plate is used for covering the tapered hole; a sail plate is fixedly arranged on a side of the cover plate away from the hinged side, the sail plate is used for accumulating force to rotate the corresponding cover plate upward during the operation of the fan; an L-shaped limiting plate is fixedly arranged on a side of the hinged end of the cover plate away from the tapered hole on the circumferential wall surface of the outer side of the inner shell, and is used for limiting the angle of upward rotation of the cover plate.

[0007] Further, a large end of the tapered hole is located on an inner wall surface of the inner shell, and a small end of the tapered hole is located on an outer wall surface of the inner shell.

[0008] Further, a rubber pad is arranged on a bottom surface of the cover plate corresponding to the tapered hole, so as to ensure sealing.

[0009] Further, a strip-shaped supporting plate is uniformly arranged between the circumferential outer side of the inner shell and the inner wall surface of the outer shell, so as to fix the inner shell in the inner shell of the outer shell; the strip-shaped supporting plate is arranged along the axial direction of the inner shell, and the number of the strip-shaped supporting plates is at least three.

[0010] Compared with the prior art, the washing machine fan motor has the following beneficial effects:

[0011] The washing machine fan motor has the following beneficial effects: the heat generated by the rotor and the stator is dissipated in time through the cooperation between the heat dissipation switch assembly and the fan; specifically, the rotor drives the fan to rotate, the fan rotates to generate wind, the wind acts on the sail plate, the sail plate accumulates force to rotate the corresponding cover plate upward and separates from the corresponding tapered hole, the heat of the inner shell is dissipated to the outside, rapid heat dissipation is realized, and the heat dissipation effect is good; the fan is installed on the rotation of the rotor, and no additional power is needed to drive, so that energy is saved; in addition, the heat dissipation structure is arranged on the body in the motor, so that no other space in the washing machine is occupied, and installation space is left for other functional structures of the washing machine.

[0012] It should be understood that the content described in the content part of the utility model is not intended to limit the key or important features of the embodiments of the utility model, nor is it intended to limit the scope of the utility model.

[0013] Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0014] Other features, objects, and advantages of the present application will become more apparent from the following detailed description when read in conjunction with the accompanying drawings:

[0015] Fig. 1 A structure schematic view of a washing machine fan motor provided by the present application is shown in the figure;

[0016] Fig. 2 A structure schematic view of the side view of the assembled heat dissipation switch assembly is shown in the figure;

[0017] The figure is marked as: 1, external shell; 2, heat dissipation through hole; 3, internal shell; 4, end plate; 5, strip-shaped support plate; 6, stator; 7, rotor; 8, first rotating shaft; 9, second rotating shaft; 10, fan; 11, heat dissipation switch assembly; 111, conical hole; 112, cover plate; 113, sail plate; 114, L-shaped limiting plate. DETAILED DESCRIPTION

[0018] The present application will be further described in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and not to limit the application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the application are shown in the drawings.

[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0020] Please refer to Figs. 1-2 The embodiment of the present application provides a washing machine fan motor, which comprises a cylindrical external shell 1, a coaxial internal shell 3 is arranged in the internal shell 1, and end plates 4 are fixedly arranged at both ends of the internal shell 3 and the external shell 1.

[0021] In a preferred embodiment, strip-shaped support plates 5 are uniformly and fixedly arranged between the circumferential outer side of the internal shell 3 and the inner side wall surface of the external shell 1, which are used to fix the internal shell 3 in the internal shell 1; the strip-shaped support plates 5 are arranged along the axis direction of the internal shell 3, and the number of the strip-shaped support plates 5 is at least three.

[0022] The circumferential wall surface of the external shell 1 is uniformly provided with a plurality of heat dissipation through holes 2, which are used to quickly realize the heat exchange between the internal and external parts of the motor.

[0023] The internal shell 3 is fixedly provided with a stator 6 and a rotor 7 corresponding to the stator 6; since the structure between the rotor 7 and the stator 6 in the motor is a mature prior art, which is a well-known technical means for the person skilled in the art, and thus is not described here.

[0024] The first rotating shaft 8 and the second rotating shaft 9 are respectively fixed at the two ends of the rotor 7, and the first rotating shaft 8 and the second rotating shaft 9 are respectively arranged to pass through the corresponding end plate 4 of the inner shell 3 away from the rotor 7, so as to be connected with the external structure and drive the external structure to rotate.

[0025] A plurality of heat dissipation switch assemblies 11 are arranged on the top of the circumferential wall surface of the inner shell 3, so as to guide the heat of the inner shell 3 to the outside of the inner shell 3, and then to the outside of the motor through the heat dissipation through hole 2 of the outer shell 1.

[0026] The first rotating shaft 8 is rotatably connected between the corresponding end plate 4 of the outer shell 1 away from the rotor 7, and the second rotating shaft 9 is rotatably arranged to pass through the corresponding end plate 4 of the outer shell 1 away from the rotor 7. The first rotating shaft 8 is fixedly sleeved with a fan 10 between the inner shell 3 and the outer shell 1. The fan 10 can accelerate the air flow in the outer shell 1, and can act on the heat dissipation switch assembly 11 to open the heat dissipation switch assembly 11 to dissipate heat for the inner shell 3.

[0027] The rotating connection between the first rotating shaft 8, the second rotating shaft 9, the four end plates 4 of the outer shell 1 and the inner shell 3 can be connected by bearings.

[0028] In a preferred embodiment, the heat dissipation switch assembly 11 is arranged on the circumferential wall surface of the inner shell 3 and located at the two ends of the stator 6. A plurality of heat dissipation switch assemblies 11 are arranged on different busbars of the inner shell 3, that is, the plurality of heat dissipation switch assemblies 11 are arranged alternately to avoid front and rear shielding, that is, to avoid the disadvantage that the wind power of the fan 10 cannot directly act on it.

[0029] The included angle between the corresponding radii of the two busbars on which the two heat dissipation switch assemblies 11 located at the outermost side in the circumferential direction of the inner shell 3 is less than 25°, so that the cover plate 112 cannot be automatically buckled on the corresponding conical hole 111 by gravity.

[0030] In a preferred embodiment, the heat dissipation switch assembly 11 includes a conical hole 111 arranged on the wall surface of the inner shell 3, and the conical hole 111 is used for dissipating heat inside the inner shell 3 to the outside of the inner shell 3.

[0031] In a preferred embodiment, the large end of the conical hole 111 is located on the inner wall surface of the inner shell 3, and the small end of the conical hole 111 is located on the outer wall surface of the inner shell 3.

[0032] The setting of the conical hole 111 can dissipate the heat accumulated inside the inner shell 3, and the shape of the conical hole 111 is set to facilitate the heat inside the inner shell 3 to impact the cover plate 112 and generate an outward force, so that the cover plate 112 is rotated away from the conical hole 111.

[0033] The cover plate 112 is hinged on the circumferential wall surface of the outer side of the inner shell 3 corresponding to the conical hole 111, and is used to cover the conical hole 111.

[0034] The sail plate 113 is fixed on the side of the cover plate 112 away from the hinge, and is used to accumulate force to rotate the corresponding cover plate 112 upward during the operation of the fan 10.

[0035] The sail plate 113 is set as an arc-shaped plate and is made of a light material, and under the action of the wind of the fan 10, the sail plate 113 accumulates force to drive the cover plate 112 to rotate away from the fan 10, so as to separate the cover plate 112 from the conical hole 111.

[0036] The L-shaped limiting plate 114 is fixed on the side of the hinge end of the cover plate 112 away from the conical hole 111, and is used to limit the angle of upward rotation of the cover plate 112, so as to avoid that the cover plate 112 is rotated too much upward and cannot be automatically buckled downward on the corresponding conical hole 111.

[0037] The sail plate 113 is set on one side of the top surface of the cover plate 112, and after the fan 10 stops working, the sail plate 113 is rotated to the direction close to the conical hole 111 under the action of its own gravity, that is, is automatically buckled on the conical hole 111.

[0038] In a preferred embodiment, the bottom surface of the cover plate 112 is provided with a rubber pad corresponding to the conical hole 111, which is used to cover the conical hole 111 and facilitate the sealing between the conical hole 111 and the cover plate 112, so as to avoid water vapor entering the inside of the inner shell 3 in a static state.

[0039] The working principle of the utility model is as follows:

[0040] When the motor works, the rotor 7 rotates inside the stator 6, and drives the first rotating shaft 8 and the second rotating shaft 9 to rotate, and the fan 10 on the first rotating shaft 8 rotates to provide wind power, which acts on the sail plate 113, and the sail plate 113 stores power to drive the cover plate 112 to rotate away from the corresponding conical hole 111, that is, the cover plate 112 is separated from the conical hole 111, so that the heat of the inner shell 3 is dissipated to the inside of the outer shell 1 through the conical hole 111, and then is dissipated to the outside of the motor through the heat dissipation through hole 2 on the outer shell 1, so that rapid and direct heat dissipation is realized, the heat dissipation effect is good, and the heat dissipation structure is arranged on the motor inner body, so that no other space in the washing machine is occupied.

[0041] In the description of the present specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium. 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.

[0042] In the description of the present specification, the terms "one embodiment", "some embodiments" and the like 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 application. In the present specification, the illustrative description of the above terms does not necessarily mean 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] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A washing machine fan motor, characterized in that, The device includes a cylindrical outer shell, inside which is a coaxial inner shell. Both ends of the inner and outer shells are fixedly fitted with end plates. A stator and a corresponding rotor are fixedly mounted inside the inner shell. A first rotating shaft and a second rotating shaft are fixedly mounted at both ends of the rotor, with the ends of both shafts rotatably extending out of the corresponding end plates of the inner shell. Multiple sets of heat dissipation switch assemblies are mounted on the top of the outer circumferential wall of the inner shell to dissipate heat to the outside. A plurality of heat dissipation holes are evenly distributed on the circumferential wall of the outer shell. The end of the first rotating shaft away from the rotor is rotatably connected to the corresponding end plate of the outer shell, and the end of the second rotating shaft away from the rotor rotatably extends out of the corresponding end plate of the outer shell. A fan is fixedly fitted onto the outer circumferential side of the first rotating shaft between the inner and outer shells.

2. The washing machine fan motor according to claim 1, characterized in that, The heat dissipation switch assembly is disposed on the circumferential wall of the inner housing and located at both ends of the stator; multiple sets of the heat dissipation switch assemblies are respectively disposed on different generatrices of the inner housing, and the included angle between the radii of the two generatrices of the two sets of heat dissipation switch assemblies located on the outermost circumferential direction of the inner housing is less than 25°.

3. The washing machine fan motor according to claim 2, characterized in that, The heat dissipation switch assembly includes a conical hole disposed on the wall of the inner housing, the conical hole being used to dissipate heat from inside the inner housing to the outside; a cover plate is hinged to the conical hole on the circumferential wall of the outer side of the inner housing, the cover plate being used to cover the conical hole; a sail is fixedly disposed on the side of the cover plate away from its hinge, the sail being used to store energy during the operation of the fan to rotate the corresponding cover plate upward; an L-shaped limiting plate is fixedly disposed on the side of the outer circumferential wall of the inner housing located at the hinge end of the cover plate away from the conical hole, for limiting the upward rotation angle of the cover plate.

4. The washing machine fan motor according to claim 3, characterized in that, The larger end of the tapered hole is located on the inner wall of the inner housing, and the smaller end of the tapered hole is located on the outer wall of the inner housing.

5. The washing machine fan motor according to claim 4, characterized in that, A rubber gasket is provided on the bottom surface of the cover plate corresponding to the conical hole to ensure sealing.

6. The washing machine fan motor according to claim 5, characterized in that, Strip support plates are uniformly fixed between the outer circumferential side of the inner shell and the inner sidewall of the outer shell to fix the inner shell inside the outer shell; the strip support plates are arranged along the axial direction of the inner shell, and the number of strip support plates is at least three.

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