Air-cooled motor

Abstract

The utility model relates to the technical field of motors, in particular to an air-cooled motor, which comprises a shell, a stator arranged in the shell and a rotor arranged in a rotatable manner, the shell is provided with a main shaft which can be controlled by the rotor and rotates coaxially with the rotor, one end of the main shaft penetrates out of the shell, and the other end of the main shaft is provided with a motor. A first cavity for mounting the stator and a second cavity for mounting the main shaft are formed in the shell; wherein the rotor is arranged on the main shaft, and a heat dissipation gap is formed between the rotor and the stator; a normally-closed air inlet structure and an air outlet structure are arranged on the shell, and when air is supplied to the air inlet structure, the air inlet structure is opened and drives the air outlet structure to be synchronously opened through the coupling structure; the air inlet structure can generate heat dissipation airflow flowing through the heat dissipation gaps, air can directly enter the motor through air cooling to dissipate heat of the motor, and a good heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to an air-cooled motor. Background Art

[0002] A motor is an electromagnetic device that uses electromagnetic induction to achieve the conversion or transmission of electrical energy. Currently, motors can be found in various types of machines.

[0003] Currently, since a large amount of heat is generated inside the motor during operation, in the prior art, in order to dissipate the heat of the motor, a water-cooling device is usually used to dissipate the heat of the motor to ensure the normal operation of the motor. However, to avoid the problem of coolant entering the motor and causing damage to the motor, the coolant usually only moves inside or outside the motor housing, and the coolant does not directly enter the motor for heat dissipation. Therefore, heat dissipation has certain limitations.

[0004] In summary, improvements are needed. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an air-cooled motor, aiming to solve the problems presented in the above background art.

[0006] The technical solution of the utility model is realized as follows: An air-cooled motor includes a housing, a stator disposed inside the housing, and a rotor rotatably arranged. The housing is provided with a main shaft that can be controlled by the rotor and rotates coaxially with the rotor. One end of the main shaft passes through the housing. The characteristics are that: The housing has a first cavity for installing the stator and a second cavity for installing the main shaft;

[0007] Wherein, the rotor is disposed on the main shaft, and a heat dissipation gap is formed between the rotor and the stator;

[0008] The housing is provided with a normally closed air intake structure and an air outlet structure. When the air intake structure is supplied with gas, the air intake structure opens and drives the air outlet structure to open synchronously through a coupling structure;

[0009] The air intake structure can generate a heat dissipation air flow flowing through the heat dissipation gap.

[0010] Preferably: The air intake structure includes:

[0011] An air inlet body, integrally formed on the housing and having an air intake cavity;

[0012] An air intake nozzle, disposed on the air inlet body and capable of supplying gas to the air intake cavity through the air intake nozzle;

[0013] An air intake port, formed on the air inlet body and the housing and communicating the air intake cavity and the first cavity;

[0014] A closed body, which is installed in the air inlet cavity by a compression spring;

[0015] When the air inlet nozzle stops supplying air, the closed body is controlled by the compression spring to close the air inlet.

[0016] Preferably, the air outlet structure includes:

[0017] An exhaust port, which is formed on the housing and communicates with the first cavity;

[0018] A movable groove, which is formed on the side wall of the exhaust port;

[0019] A closing block, which is located at the exhaust port and can be controlled to enter or leave the movable groove;

[0020] After the closing block enters the movable groove, the exhaust port is opened; after the closing block leaves the movable groove, the exhaust port is closed.

[0021] Preferably, a heat insulation plate is provided on the closing block, and the heat insulation plate is located inside the exhaust port.

[0022] Preferably, the coupling structure includes:

[0023] A limit seat, which is provided on the housing and is located between the air inlet body and the exhaust port;

[0024] A coupling, which is slidably fixed on the limit seat and is connected to the closed body and the closing block at both ends respectively;

[0025] Wherein, mutually adapted limit ribs and limit grooves are provided on the mating surfaces of the limit seat and the coupling.

[0026] Preferably, a filter screen is provided on the closed body, and a telescopic cavity for the filter screen to move is provided in the air inlet cavity.

[0027] Preferably, a limit piece is provided on the coupling on one side of the limit seat, and the compression spring is provided between the limit piece and the housing.

[0028] The utility model has at least the following beneficial effects:

[0029] 1. The utility model replaces the water cooling heat dissipation method in the prior art with an air cooling heat dissipation method. Compared with water cooling heat dissipation, the air cooling of the utility model can make the cooling air enter the motor interior, and after fully dissipating heat from the motor interior, it is discharged, so as to improve the heat dissipation effect.

[0030] 2. The air inlet structure and the air outlet structure of the utility model can be closed under normal conditions, so impurities can be prevented from entering the motor.

[0031] 3. The air outlet structure of the present utility model cooperates with the air inlet structure through a coupling structure, enabling the air inlet structure and the air outlet structure to open and close synchronously, thereby improving the synchronization of their movements.

[0032] In addition, other advantages of the present utility model will be demonstrated in the embodiment part of the present utility model, making the beneficial effects of the present utility model more remarkable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic structural diagram of Specific Embodiment 1 of the present utility model;

[0035] Figure 2 is Figure 1 the A-A cross-sectional view in

[0036] Figure 3 is Figure 2 the B-B cross-sectional view in

[0037] Figure 4 is Figure 2 a schematic diagram of a variant embodiment of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0039] Embodiment 1

[0040] As Figures 1-4 shown, the present utility model discloses an air-cooled motor, including a housing 10, a stator 11 disposed inside the housing 10, and a rotor 12 rotatably arranged. The housing 10 is provided with a main shaft 13 that can be controlled by the rotor 12 and rotates coaxially with the rotor 12. One end of the main shaft 13 passes through the housing 10. That is to say, the main shaft 13 is the power output end of the motor in this embodiment. As for the starting or operating principles of the rotor, stator, and main shaft, they are currently mature prior arts. Therefore, they will not be elaborated in this embodiment.

[0041] In this embodiment: a first cavity 101 for installing the stator 11 and a second cavity for installing the main shaft 13 are provided inside the housing 10, and the first cavity and the second cavity are coaxially arranged;

[0042] Wherein, the rotor 12 is arranged on the main shaft 13, and a heat dissipation gap 14 is formed between the rotor 12 and the stator 11;

[0043] A normally-closed air inlet structure and an air outlet structure are provided on the housing 10. When the air inlet structure is supplied with air, the air inlet structure opens and drives the air outlet structure to open synchronously through a coupling structure;

[0044] The air inlet structure can generate a heat dissipation air flow flowing through the heat dissipation gap 14.

[0045] In this embodiment: the air inlet structure includes:

[0046] An air inlet body 20, integrally formed on the housing 10 and having an air inlet cavity 21;

[0047] An air inlet nozzle 22, arranged on the air inlet body 20, and air can be supplied into the air inlet cavity 21 through the air inlet nozzle 22;

[0048] An air inlet 23, formed on the air inlet body 20 and the housing 10 and communicating the air inlet cavity 21 and the first cavity 101;

[0049] A closing body 24, installed in the air inlet cavity 21 through a compression spring 25;

[0050] When the air supply to the air inlet nozzle 22 is stopped, the closing body 24 is controlled by the compression spring 25 to close the air inlet 23.

[0051] In this embodiment: the air outlet structure includes:

[0052] An exhaust port 30, formed on the housing 10 and communicating with the first cavity 101;

[0053] An activity groove 31, formed on the side wall of the exhaust port 30;

[0054] A closing block 32, located at the exhaust port 30 and capable of being controlled to enter or leave the activity groove 31;

[0055] When the closing block 32 enters the activity groove 31, the exhaust port 30 is opened; when the closing block 32 leaves the activity groove 31, the exhaust port 30 is closed.

[0056] In this embodiment: a heat insulation plate 4 is provided on the closing block 32, and the heat insulation plate 4 is located inside the exhaust port 30.

[0057] In this embodiment: the coupling structure includes:

[0058] The limit seat 50 is arranged on the housing 10 and is located between the air inlet 20 and the exhaust port 30;

[0059] The coupling shaft 51 is slidably fixed on the limit seat 50, and its two ends are respectively connected to the closing body 24 and the closing block 32;

[0060] Wherein, mutually adapted limit ribs 52 and limit grooves are arranged on the mating surfaces of the limit seat 50 and the coupling shaft 51.

[0061] In this embodiment, the housing 10 is composed of a main housing 10a (mainly for installing the rotor and stator) and a sub-housing 10b (for supporting the main shaft). The main housing 10a and the sub-housing 10b are arranged with a gap therebetween to form the exhaust port 30.

[0062] In this embodiment, a control valve communicating with the intake cavity 21 is arranged on the air inlet 20. The control valve closes when the air inlet nozzle 22 intakes air, and can be controlled to open when the air inlet nozzle 22 stops intaking air, so as to relieve the pressure in the intake cavity 21.

[0063] Reference Figures 1-4 , the principle of this embodiment is:

[0064] When the motor starts, air is supplied to the air inlet nozzle through the air pump, and the closing body gradually moves to the right (taking Figure 2 as a reference), and the air inlet and the exhaust port are opened. That is, when the closing body moves, the closing block is driven by the coupling shaft to enter the movable groove, so as to open the air inlet and the exhaust port. The gas entering the intake cavity enters the first cavity of the housing through the air inlet, and passes through the heat dissipation gap formed between the stator and the rotor, thereby dissipating heat from the inside of the motor, and finally being discharged through the exhaust port to complete the heat dissipation work.

[0065] In this embodiment, by arranging an air intake structure and an air outlet structure on the motor, air flow can be introduced to dissipate heat from the motor, and the air flow can enter the motor to obtain a better heat dissipation effect.

[0066] Secondly, when the air intake structure stops intaking air, the closing body and the closing block are controlled to be in a normally closed state by the compression spring, so as to avoid impurities from entering the motor and affecting the normal use of the motor.

[0067] Thirdly, when the exhaust port is opened, the closing block enters the movable groove, and the heat insulation plate contacts the inner wall of the housing on the side of the exhaust port away from the stator. In this way, the hot air discharged from the left side of the exhaust port will not be transferred to the housing on the right side of the exhaust port during the discharge process. That is to say, the housing of this embodiment is divided into two parts, reference Figure 4, on the left side of the exhaust port is the main housing 10a for installing the stator and rotor, while on the right side of the exhaust port is the auxiliary housing 10b mainly for supporting the movement of the main shaft. There is a gap between the main housing and the auxiliary housing (this gap is the exhaust port). During use, the main housing and the auxiliary housing are installed on the machine. The intake structure of this embodiment is arranged on the main housing, and the movable slot of the outlet structure is formed on the auxiliary housing. Therefore, when the exhaust port is opened, the closing block (ring shape) enters the movable slot, and the heat insulation plate (ring shape) contacts the end of the auxiliary housing close to the main housing. Therefore, when the hot air is discharged from the exhaust port, the heat insulation plate can effectively prevent the hot air from transferring heat to the auxiliary housing.

[0068] Embodiment 2, the difference from Embodiment 1 is as follows:

[0069] As Figure 4 shown, in this embodiment: a filter screen 6 is provided on the closing body 24, and a telescopic cavity 60 for the filter screen 6 to move is provided in the intake cavity 21.

[0070] In this embodiment: a limiting piece 7 is provided on the coupling 51 on one side of the limiting seat 50, and the compression spring 25 is provided between the limiting piece 70 and the housing (main housing 10a).

[0071] Referring to Figure 4 , in order to prevent impurities from entering the motor in this embodiment, a filter screen is provided in the intake gas to filter the gas entering the motor. At the same time, in order to reduce the volume of the intake gas, the compression spring can be arranged on the main housing.

[0072] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air-cooled motor, comprising a housing (10), a stator (11) arranged in the housing (10), and a rotor (12) arranged in a rotatable manner, wherein the housing (10) is provided with a main shaft (13) which can be controlled by the rotor (12) and rotate coaxially with the rotor (12), and one end of the main shaft (13) passes through the housing (10), characterized in that: The housing (10) has a first cavity (101) for installing the stator (11) and a second cavity for installing the main shaft (13); The rotor (12) is arranged on the main shaft (13), and a heat dissipation gap (14) is formed between the rotor (12) and the stator (11); The housing (10) is provided with a normally closed air inlet structure and an air outlet structure, and when the air inlet structure is supplied with air, the air inlet structure opens and drives the air outlet structure to open synchronously through the coupling structure; The air intake structure can generate a heat dissipation airflow flowing through the heat dissipation gap (14).

2. The air-cooled motor according to claim 1, characterized in that: The air intake structure comprises: An air inlet (20) is integrally formed on the housing (10) and has an air inlet cavity (21); An air inlet nozzle (22) is disposed on the air inlet portion (20) and is capable of supplying air into the air inlet cavity (21) through the air inlet nozzle (22); An air inlet (23) formed on the air inlet body (20) and the housing (10) and communicating with the air inlet cavity (21) and the first cavity (101); A closing body (24) is installed in the air inlet chamber (21) via a compression spring (25); When the air supply from the air inlet nozzle (22) is stopped, the closing body (24) is controlled by the compression spring (25) to close the air inlet (23).

3. The air-cooled motor according to claim 2, characterized in that: The gas outlet structure comprises: An exhaust port (30) is formed on the housing (10) and communicates with the first chamber (101); A movable groove (31) formed on a side wall of the exhaust port (30); A closing block (32) is located at the exhaust port (30) and can be controlled to enter or leave the movable groove (31); When the closing block (32) enters the movable groove (31), the exhaust port (30) is opened; when the closing block (32) leaves the movable groove (31), the exhaust port (30) is closed.

4. The air-cooled motor according to claim 3, characterized in that: A heat insulation board (4) is provided on the closing block (32), and the heat insulation board (4) is located inside the exhaust port (30).

5. An air-cooled motor according to claim 3 or 4, characterized in that: The coupling structure comprises: A limit seat (50) is provided on the housing (10) and is located between the air inlet (20) and the air outlet (30); A coupling shaft (51) is slidably fixed on the limiting seat (50), and its two ends are respectively connected to the closing body (24) and the closing block (32); Wherein, mutually matching limiting ribs (52) and limiting grooves are provided on the matching surfaces of the limiting seat (50) and the coupling shaft (51).

6. An air-cooled motor according to any one of claims 2 to 4, characterized in that: A filter screen (6) is provided on the closed body (24), and a telescopic cavity (60) for movement of the filter screen (6) is provided in the air inlet cavity (21).

7. The air-cooled motor according to claim 5, characterized in that: The coupling shaft (51) is provided with a limiting plate (7) located on one side of the limiting seat (50), and the compression spring (25) is provided between the limiting plate (7) and the housing (10).

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