Cooling device for asynchronous motor

Abstract

The utility model discloses a cooling device for an asynchronous motor, which relates to the technical field of motor cooling and comprises a cooling assembly composed of a transmission mechanism, a direction control mechanism and radiating fan blades. The transmission mechanism can drive the heat dissipation fan blades to rotate, so that air flow is excited to cool and dissipate heat of the asynchronous motor, and meanwhile, the direction control mechanism can convert bidirectional rotation of the motor rotating shaft into unidirectional rotation. The transmission mechanism can realize one-way and directional rotation of the heat dissipation fan blades through the direction control mechanism to stably cool and dissipate heat for the asynchronous motor, and the problems that a cooling function is realized by a cooling structure of an existing asynchronous motor along with synchronous and same-direction rotation of a rotating shaft of the motor, the fan blade structure can only excite airflow in a fixed rotation direction, and the cooling effect is poor are solved. And after the rotating direction of the rotating shaft of the motor is switched, the function that the fan blade structure excites the air flow fails is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor cooling, and more specifically, relates to a cooling device for an asynchronous motor. Background Art

[0002] An asynchronous motor, also known as an induction motor, is an AC motor that generates electromagnetic torque through the interaction between the rotating magnetic field in the air gap and the induced current in the rotor winding, thereby converting electromechanical energy into mechanical energy. Asynchronous motors generate heat when working. In order to ensure the normal use of asynchronous motors, a fan blade structure is generally provided on the motor shaft. When the asynchronous motor is working, the fan blade structure can rotate with the motor shaft, thereby arousing airflow to dissipate heat and cool the asynchronous motor.

[0003] As for the cooling structure of the existing asynchronous motor, its cooling function is achieved by following the synchronous and coinciding rotation of the motor shaft. However, in order to adapt to the working state, the asynchronous motor will switch the rotation direction. The fan blade structure can only arouse airflow in a fixed rotation direction. Therefore, when the motor shaft switches the rotation direction, the fan blade structure will fail to arouse the airflow function, and then its cooling and heat dissipation function of the asynchronous motor will fail, resulting in poor stability and low practicality. Utility Model Content

[0004] The disclosed embodiment relates to a cooling device for an asynchronous motor, which has a cooling component, wherein a transmission mechanism can drive the heat dissipation fan blades to rotate, thereby achieving the operation of arousing airflow to cool and dissipate heat for the asynchronous motor, and the transmission mechanism is driven by the motor shaft, without the need for additional energy drive access, and is flexible to use. At the same time, the control mechanism can convert the bidirectional rotation of the motor shaft into unidirectional rotation, so that regardless of whether the motor shaft rotates forward or backward, the transmission mechanism can achieve unidirectional and directional rotation of the heat dissipation fan blades through the control mechanism, stably cooling and dissipating heat for the asynchronous motor, and having extremely high flexibility, stability and practicality.

[0005] In a first aspect of the present disclosure, a cooling device for an asynchronous motor is provided, comprising a cooling assembly, wherein the cooling assembly is composed of a transmission mechanism, a direction control mechanism, and heat dissipation fan blades;

[0006] The transmission mechanism includes a mounting base, a flexible gear a and a flexible gear b and a control shaft, wherein the mounting base is fixedly mounted on the tail end of the asynchronous motor housing, the flexible gear a is rotatably connected to the inside of the mounting base, and the flexible gear b is rotatably connected to the inside of the mounting base, the flexible gear a and the flexible gear b are symmetrically arranged, and the flexible gear a and the flexible gear b are on the same axis, and one side of the flexible gear a is fixedly mounted on the side of the motor shaft of the asynchronous motor;

[0007] The control mechanism is provided with two groups, and the control mechanism includes a synchronous seat and an adaptation block. The synchronous seats of the two groups of control mechanisms are respectively fixedly installed inside the flexible gear a and the flexible gear b, and the adaptation block is inserted into the control shaft. The heat dissipation fan blades are fixedly installed on the side of the control shaft, and the control shaft is rotatably connected to the inside of the synchronous seat.

[0008] In at least some embodiments, the transmission mechanism further includes a linkage gear, which is rotatably connected to the interior of the mounting base, and the two sides of the linkage gear are respectively engaged with the gear teeth of the flexible gear a and the flexible gear b for transmission.

[0009] In at least some embodiments, a one-way tooth groove is provided inside the synchronous seat, and the cross-section of the top block of the adaptable block and the cross-section of a single tooth groove of the one-way tooth groove are both right triangles.

[0010] In at least some embodiments, an adaptive top spring is provided inside the adaptive block, and the two ends of the adaptive top spring respectively abut against the inside of the adaptive block and the inside of the motor shaft. Under the action of the adaptive top spring, the top of the adaptive block is inserted into the inside of the one-way tooth groove.

[0011] In at least some embodiments, the straight edges of the tops of the adaptable blocks of the two groups of the control mechanisms face the same direction.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The transmission mechanism can drive the heat dissipation fan blades to rotate, thereby achieving the operation of arousing airflow to cool and dissipate heat for the asynchronous motor, and the transmission mechanism is driven by the motor shaft, without the need for additional energy drive access, and is flexible to use. At the same time, the direction control mechanism can convert the bidirectional rotation of the motor shaft into unidirectional rotation, so that no matter whether the motor shaft rotates forward or backward, the transmission mechanism can realize the unidirectional and directional rotation of the heat dissipation fan blades through the direction control mechanism, which is used for stably cooling and dissipating heat for the asynchronous motor, thereby improving the flexibility, stability and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0016] Figure 3 This utility model Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0017] Figure 4 It is a structural schematic diagram of the disassembled direction control mechanism of the utility model.

[0018] Figure 5It is a structural schematic diagram of the transmission mechanism of the utility model after disassembly.

[0019] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0020] 1. Asynchronous motor; 101. Motor shaft;

[0021] 2. Transmission mechanism; 201. Mounting seat; 202. Flexible gear a; 203. Flexible gear b; 204. Linkage gear; 205. Control shaft;

[0022] 3. Direction control mechanism; 301. Synchronous seat; 3011. One-way tooth groove; 302. Adaptation block; 3021. Adaptation top spring;

[0023] 4. Cooling fan blades. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples.

[0025] As attached Figure 1 To the attached Figure 5 As shown:

[0026] Example 1: The present invention provides a cooling device for an asynchronous motor, comprising a cooling assembly, the cooling assembly comprising a transmission mechanism 2, a direction control mechanism 3 and heat dissipation fan blades 4;

[0027] The transmission mechanism 2 includes a mounting base 201, a flexible gear a202, a flexible gear b203 and a control shaft 205. The mounting base 201 is fixedly mounted on the tail end of the housing of the asynchronous motor 1. The flexible gear a202 is rotatably connected to the inside of the mounting base 201, and the flexible gear b203 is rotatably connected to the inside of the mounting base 201. The flexible gears a202 and b203 are symmetrically arranged and are on the same axis. One side of the flexible gear a202 is fixedly mounted on the side of the motor shaft 101 of the asynchronous motor 1.

[0028] There are two groups of control mechanisms 3, and the control mechanisms 3 include a synchronization seat 301 and an adaptation block 302. The synchronization seats 301 of the two groups of control mechanisms 3 are respectively fixedly installed inside the flexible gear a202 and the flexible gear b203, and the adaptation block 302 is inserted into the control shaft 205. The heat dissipation fan blades 4 are fixedly installed on the side of the control shaft 205, and the control shaft 205 is rotatably connected to the inside of the synchronization seat 301.

[0029] In the embodiment of the present disclosure, the transmission mechanism 2 also includes a linkage gear 204, which is rotatably connected to the inside of the mounting base 201. The two sides of the linkage gear 204 are respectively engaged with the gear teeth of the flexible gear a202 and the flexible gear b203 for transmission. In use, under the action of the control mechanism 3, the motor shaft 101 can drive the heat dissipation fan blades 4 to rotate through the transmission mechanism 2, and the change in the rotation direction of the motor shaft 101 can only and only drive one gear to rotate, thereby ensuring that the airflow stirred up by the heat dissipation fan blades 4 can stably dissipate heat and cool the asynchronous motor 1. When the asynchronous motor 1 rotates, its motor shaft 101 can drive the flexible gear a202 to rotate. When the flexible gear a202 rotates, it can drive the flexible gear b203 to rotate through the linkage gear 204, and the rotation directions of the flexible gear a202 and the flexible gear b203 are always opposite. Therefore, under the action of the control mechanism 3, no matter which direction the motor shaft 101 rotates, the rotation direction of the control shaft 205 is always fixed, thereby ensuring stable cooling and heat dissipation of the asynchronous motor 1.

[0030] In the embodiment of the present disclosure, a one-way tooth groove 3011 is provided inside the synchronous seat 301, and the cross-section of the top block of the adaptive block 302 and the cross-section of a single tooth groove of the one-way tooth groove 3011 are both right triangles, and an adaptive top spring 3021 is provided inside the adaptive block 302, and the two ends of the adaptive top spring 3021 are respectively against the inside of the adaptive block 302 and the inside of the motor shaft 101. Under the action of the adaptive top spring 3021, the top of the adaptive block 302 is inserted into the inside of the one-way tooth groove 3011, and the straight edges of the top of the adaptive blocks 302 of the two sets of control mechanisms 3 face the same direction. In use, the flexible gear a202 and the flexible gear b203 will drive the synchronous seat 301 inside them to rotate when they rotate, and The control shaft 205 can only be driven to rotate under the clamping action of the adaptation block 302 and the straight edge of the one-way tooth groove 3011. Since the rotation directions of the flexible gear a202 and the flexible gear b203 are opposite, under the action of the two groups of control mechanisms 3, no matter which direction the motor shaft 101 rotates, there is always one group of control mechanisms 3 whose adaptation block 302 and the straight edge of the one-way tooth groove 3011 are clamped to drive the control shaft 205 to rotate, while the adaptation block 302 and the oblique edge of the one-way tooth groove 3011 of the other group of control mechanisms 3 will conflict and squeeze each other, so that the adaptation block 302 of this group will move toward the inside of the control shaft 205 to avoid and compress the adaptation top spring 3021, so that the device will not be stuck and it is stable to use.

[0031] The specific usage and function of this embodiment are as follows:

[0032] In the present invention, when the asynchronous motor 1 is working, under the action of the control mechanism 3, the motor shaft 101 can drive the heat dissipation fan blades 4 to rotate through the transmission mechanism 2, and the change in the rotation direction of the motor shaft 101 can only and only drive one gear to rotate, thereby ensuring that the airflow stirred up by the heat dissipation fan blades 4 can stably dissipate heat and cool the asynchronous motor 1. When the asynchronous motor 1 rotates, its motor shaft 101 can drive the flexible gear a202 to rotate. When the flexible gear a202 rotates, it can drive the flexible gear b203 to rotate through the linkage gear 204, and the rotation directions of the flexible gear a202 and the flexible gear b203 are always opposite. Therefore, under the action of the control mechanism 3, no matter which direction the motor shaft 101 rotates, the rotation direction of the control shaft 205 is always fixed, thereby ensuring the asynchronous motor 1 has stable cooling and heat dissipation. When the flexible gear a202 and the flexible gear b203 rotate, they will drive the synchronous seat 301 inside to rotate, and the control shaft 205 will be driven to rotate only under the clamping action of the adaptation block 302 and the straight edge of the one-way tooth groove 3011. Since the rotation directions of the flexible gear a202 and the flexible gear b203 are opposite, under the action of the two groups of control mechanisms 3, no matter which direction the motor shaft 101 rotates, there is always one group of control mechanisms 3 whose adaptation block 302 and the straight edge of the one-way tooth groove 3011 are clamped to drive the control shaft 205 to rotate, while the adaptation block 302 and the oblique edge of the one-way tooth groove 3011 of the other group of control mechanisms 3 will conflict and squeeze each other, so that the adaptation block 302 of this group will move toward the inside of the control shaft 205 to avoid and compress the adaptation top spring 3021, and the device will not be stuck.

[0033] In this article, there are several points to note:

[0034] 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0035] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0036] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A cooling device for an asynchronous motor, characterized in that: It comprises: a cooling assembly, the cooling assembly consisting of a transmission mechanism (2), a direction control mechanism (3) and heat dissipation fan blades (4); The transmission mechanism (2) includes a mounting seat (201), a flexible gear a (202), a flexible gear b (203) and a control shaft (205), wherein the mounting seat (201) is fixedly mounted on the rear end of the housing of the asynchronous motor (1), the flexible gear a (202) is rotatably connected to the interior of the mounting seat (201), and the flexible gear b (203) is rotatably connected to the interior of the mounting seat (201), the flexible gear a (202) and the flexible gear b (203) are symmetrically arranged, and the flexible gear a (202) and the flexible gear b (203) are on the same axis, and one side of the flexible gear a (202) is fixedly mounted on the side of the motor shaft (101) of the asynchronous motor (1); The direction control mechanism (3) is provided with two groups, and the direction control mechanism (3) includes a synchronous seat (301) and an adaption block (302). The synchronous seats (301) of the two groups of direction control mechanisms (3) are respectively fixedly mounted inside the flexible gear a (202) and the flexible gear b (203), and the adaption block (302) is plugged into the inside of the control shaft (205). The heat dissipation fan blade (4) is fixedly mounted on the side of the control shaft (205), and the control shaft (205) is rotatably connected to the inside of the synchronous seat (301).

2. A cooling device for an asynchronous motor according to claim 1, characterized in that: The transmission mechanism (2) further comprises a linkage gear (204), which is rotatably connected to the interior of the mounting seat (201), and two sides of the linkage gear (204) are respectively meshed with the gear teeth of the flexible gear a (202) and the flexible gear b (203) for transmission.

3. A cooling device for an asynchronous motor according to claim 2, characterized in that: A one-way tooth groove (3011) is provided inside the synchronous seat (301), and the cross-section of the top block of the adaptation block (302) and the cross-section of a single tooth groove of the one-way tooth groove (3011) are both right triangles.

4. A cooling device for an asynchronous motor according to claim 3, characterized in that: An adaptive top spring (3021) is provided inside the adaptive block (302), and two ends of the adaptive top spring (3021) respectively abut against the inside of the adaptive block (302) and the inside of the motor shaft (101). Under the action of the adaptive top spring (3021), the top of the adaptive block (302) is inserted into the inside of the one-way tooth groove (3011).

5. A cooling device for an asynchronous motor according to claim 4, characterized in that: The straight edges of the tops of the adaptable blocks (302) of the two sets of the control mechanisms (3) face the same direction.

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