Negative pressure structure of air cooling motor

Abstract

The utility model relates to the technical field of motors, in particular to a negative pressure structure of an air-cooled motor, which comprises an air inlet body integrally formed on a motor shell, an air inlet cavity arranged in the air inlet body, an air inlet nozzle and an air outlet nozzle arranged on the air inlet body, a movable plate slidably arranged in the air inlet cavity, and a driving structure controlled by a main shaft of the motor to start, wherein the movable plate can be controlled by the driving structure to do reciprocating motion, when negative pressure is formed in the air inlet body, air is sucked in from the air inlet nozzle and pressed into the motor shell by the movable plate, and the motor has the advantages that the negative pressure structure is synchronously started when the motor is started, and the introduced air enters the motor to dissipate heat of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a negative pressure structure of an air-cooled motor. Background Art

[0002] A motor is an electromagnetic device that uses electromagnetic induction to convert or transfer electrical energy and is one of the most common drivers currently available.

[0003] At present, since the motor generates heat when it is working, it is generally equipped with corresponding heat dissipation equipment to assist. However, the existing motor heat dissipation equipment is separate. When the motor is started or stopped, it is necessary to specifically start or stop the heat dissipation equipment. Therefore, the process is relatively cumbersome in actual use. If the worker forgets to start the heat dissipation equipment, it is very easy for the motor to be damaged due to being in a high temperature state for a long time.

[0004] In summary, improvements need to be made. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a negative pressure structure for an air-cooled motor, aiming to solve the problems arising from the above-mentioned background technology.

[0006] The technical solution of the utility model is implemented as follows: a negative pressure structure of an air-cooled motor, characterized in that it includes:

[0007] An air inlet is integrally formed on the motor housing and has an air inlet cavity;

[0008] The air inlet nozzle and the air outlet nozzle are arranged on the air inlet portion and form an air inlet branch with the air inlet cavity to transport air flow into the motor housing;

[0009] A movable plate is slidably disposed in the air intake cavity;

[0010] The driving structure is mounted on the motor housing and can be started by the main shaft of the motor;

[0011] The movable plate can be controlled to reciprocate by the driving structure. When negative pressure is formed in the intake air, the air is sucked in from the intake nozzle and pressed into the motor housing by the movable plate.

[0012] Preferably, the air inlet nozzle and the air outlet nozzle are both one-way valve structures, and the air outlet nozzle is connected between the air inlet cavity and the motor housing, and can deliver the gas in the air inlet cavity into the motor housing.

[0013] Preferably, the movable plate divides the air inlet cavity into a first cavity and a second cavity, wherein the driving structure comprises:

[0014] A cam is rotatably disposed in the first cavity;

[0015] a return spring, installed in the second cavity and connected to the movable plate;

[0016] The drive shaft is mounted on the motor housing through a support seat, and one end thereof penetrates into the air inlet and is connected to the cam;

[0017] The driven gear is installed at the other end of the driving shaft;

[0018] The transmission gear is installed on the main shaft of the motor and meshes with the driven gear.

[0019] Preferably, a detachable filter structure is provided on the air inlet, and the filter structure comprises:

[0020] The threaded seat is annular in shape and is coaxially arranged with the air inlet nozzle;

[0021] The filter screen is cylindrical in shape and has an inner cavity for the air inlet nozzle to move, and is mounted on a threaded seat;

[0022] Wherein, the air inlet is provided on a threaded cavity which is coaxially arranged with the air inlet nozzle and cooperates with the threaded seat.

[0023] Preferably, the air inlet nozzle is composed of a first air inlet nozzle and a second air inlet nozzle which are arranged on the air inlet body and are respectively connected to the first cavity and the second cavity, and an exhaust nozzle connected to the first cavity is arranged on the air inlet body.

[0024] The utility model has at least the following beneficial effects:

[0025] 1. The utility model is provided with a driving structure, which can be started by the main shaft of the motor when the motor is started, and the driving structure is used to drive the intake air to supply air to the motor to dissipate the heat of the motor. Therefore, when the utility model starts the motor, the negative pressure structure used for heat dissipation can also run synchronously to dissipate the heat of the motor.

[0026] 2. The utility model provides a detachably connected filter structure at the air inlet nozzle position, and the filter structure can prevent impurities from entering the motor, thereby ensuring the stable operation of the motor.

[0027] In addition, other advantages of the present invention will be demonstrated in the embodiments of the present invention, thereby making the beneficial effects of the present invention more significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 This is a schematic diagram of the structure of a specific embodiment 1 of the utility model;

[0030] Figure 2 for Figure 1 AA section view in;

[0031] Figure 3 for Figure 2 A magnified view of part A in FIG.

[0032] Figure 4 It is a schematic structural diagram of specific embodiment 2 of the utility model. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Example 1

[0035] like Figure 1-3 As shown, the utility model discloses a negative pressure structure of an air-cooled motor.

[0036] In this embodiment, it includes:

[0037] The air inlet 10 is integrally formed on the motor housing 11 and has an air inlet cavity;

[0038] The air inlet nozzle 12 and the air outlet nozzle 13 are arranged on the air inlet body 10, and together with the air inlet cavity form an air inlet branch capable of conveying air flow into the motor housing 11;

[0039] A movable plate 20 is slidably disposed in the air inlet cavity;

[0040] The driving structure is mounted on the motor housing 11 and can be controlled and started by the main shaft 21 of the motor;

[0041] The movable plate 20 can be controlled to reciprocate by the driving structure. When negative pressure is formed in the air intake 10 , air is sucked in from the air intake nozzle 12 and pressed into the motor housing 11 by the movable plate 20 .

[0042] In this embodiment, the air-cooled motor is composed of a motor housing 11 , a stator 11 a , a rotor 11 b and a main shaft 21 .

[0043] In this embodiment, the air inlet nozzle 12 and the air outlet nozzle 13 are both one-way valve structures, and the air outlet nozzle 13 is connected between the air inlet cavity and the motor housing 11, and can deliver the gas in the air inlet cavity into the motor housing 11. The air inlet nozzle 12 and the air outlet nozzle 13 are provided with a valve cavity 32, a valve core 30 and a spring 31. The spring 31 drives the valve core 30 to close the valve cavity 32. When negative pressure is formed in the air inlet cavity, the valve core of the air inlet nozzle 12 is opened to complete the air intake. When the gas in the air inlet cavity is squeezed out, the valve core of the air outlet nozzle 13 is opened to complete the exhaust.

[0044] In this embodiment, the movable plate 20 divides the air inlet cavity into a first cavity 41 and a second cavity 42, wherein the driving structure includes:

[0045] The cam 50 is rotatably disposed in the first cavity 41;

[0046] A return spring 51 is installed in the second cavity 42 and connected to the movable plate 20;

[0047] The drive shaft 52 is mounted on the motor housing 11 through the support base 53, and one end thereof penetrates into the air inlet 10 and is connected to the cam 50;

[0048] The driven gear 54 is mounted on the other end of the driving shaft 52;

[0049] The transmission gear 55 is mounted on the main shaft 21 of the motor and meshes with the driven gear 54 .

[0050] In this embodiment, bearings 53 a for supporting the driving shaft are disposed in the support seat 53 and the intake body 10 .

[0051] In this embodiment, a heat dissipation opening 11 c is disposed on the motor housing 11 .

[0052] refer to Figure 1-3 , the principle of this embodiment is:

[0053] When the motor starts, the main shaft is controlled to rotate by the rotor, and drives the driven gear to rotate through the transmission gear. The driven gear drives the cam to rotate using the drive shaft. When the cam moves in the first cavity, it cooperates with the return spring to drive the movable plate to move up and down in the air intake cavity, and forms a negative pressure in the second cavity. To be more specific: when the movable plate moves away from the motor housing, a negative pressure is formed in the second cavity, and air is sucked in through the air intake nozzle. When the movable plate moves close to the motor housing, the movable plate squeezes the gas in the second cavity from the air outlet nozzle and sends it into the motor housing. After moving in the motor, the gas is discharged from the heat dissipation port, thereby completing the heat dissipation of the motor.

[0054] Embodiment 2 is different from Embodiment 1 in that:

[0055] like Figure 4As shown, in this embodiment, a detachable filtering structure is provided on the air inlet, and the filtering structure includes:

[0056] The threaded seat 70 is annular and is coaxially arranged with the air inlet nozzle 12;

[0057] The filter screen 71 is cylindrical in shape and has an inner cavity 72 for the air inlet nozzle 12 to move, and is mounted on the threaded seat 70;

[0058] The air inlet body 10 is provided with a threaded cavity which is coaxial with the air inlet nozzle 12 and cooperates with the threaded seat 70 .

[0059] In this embodiment, the air inlet nozzle 12 is composed of a first air inlet nozzle 121 and a second air inlet nozzle 122 which are arranged on the air inlet body 10 and are connected to the first cavity 41 and the second cavity 42 respectively, and an exhaust nozzle 6 (the exhaust nozzle is also a one-way valve structure) which is connected to the first cavity 41 is provided on the air inlet body 10.

[0060] refer to Figure 4 In order to dissipate the heat of the cam, the first air inlet nozzle is arranged on the air inlet to communicate with the first cavity. When the movable plate is raised or lowered, the gas can be introduced into the first cavity through the first air inlet nozzle to dissipate the heat of the cam, and the gas is discharged from the exhaust nozzle after the heat dissipation is completed.

[0061] Moreover, in order to prevent impurities from entering the first cavity or the second cavity, a filter is provided, which can reduce the impurities from entering the first cavity or the second cavity, and the filter of this embodiment can be cleaned by disassembling the threaded seat, so it is easy to replace and clean.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A negative pressure structure for an air-cooled motor, characterized in that: include: An air inlet (10) is integrally formed on the motor housing (11) and has an air inlet cavity; An air inlet nozzle (12) and an air outlet nozzle (13) are arranged on the air inlet portion (10) and together with the air inlet cavity form an air inlet branch capable of conveying air flow into the motor housing (11); A movable plate (20) is slidably disposed in the air inlet cavity; A driving structure is mounted on the motor housing (11) and can be controlled and started by the main shaft (21) of the motor; The movable plate (20) can be controlled to reciprocate by a driving structure, and when negative pressure is formed in the air intake (10), air is sucked in from the air intake nozzle (12) and pressed into the motor housing (11) by the movable plate (20).

2. The negative pressure structure of an air-cooled motor according to claim 1, characterized in that: The air inlet nozzle (12) and the air outlet nozzle (13) are both one-way valve structures, and the air outlet nozzle (13) is connected between the air inlet cavity and the motor housing (11), and can deliver the gas in the air inlet cavity into the motor housing (11).

3. A negative pressure structure for an air-cooled motor according to claim 1 or 2, characterized in that: The movable plate (20) divides the air intake cavity into a first cavity (41) and a second cavity (42), wherein the driving structure comprises: A cam (50) is rotatably disposed in the first chamber (41); A return spring (51) is installed in the second chamber (42) and connected to the movable plate (20); The driving shaft (52) is mounted on the motor housing (11) through a supporting seat (53), and one end thereof penetrates into the gas (10) and is connected to the cam (50); A driven gear (54) is mounted on the other end of the driving shaft (52); The transmission gear (55) is mounted on the main shaft (21) of the motor and meshes with the driven gear (54).

4. The negative pressure structure of an air-cooled motor according to claim 3, characterized in that: The air inlet is provided with a detachable filtering structure, and the filtering structure comprises: The threaded seat (70) is annular in shape and is coaxially arranged with the air inlet nozzle (12); The filter screen (71) is cylindrical in shape and has an inner cavity (72) for the air inlet nozzle (12) to move, and is mounted on the threaded seat (70); Wherein, the air inlet (10) is provided with a threaded cavity which is coaxially arranged with the air inlet nozzle (12) and cooperates with the threaded seat (70).

5. The negative pressure structure of an air-cooled motor according to claim 4, characterized in that: The air inlet nozzle (12) is composed of a first air inlet nozzle (121) and a second air inlet nozzle (122) which are arranged on the air inlet body (10) and are respectively connected to the first cavity (41) and the second cavity (42), and an exhaust nozzle (6) which is connected to the first cavity (41) is arranged on the air inlet body (10).

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