Condensate water prevention structure of motor

Abstract

The utility model discloses a motor condensate water prevention structure which comprises a motor body and a motor junction box connected to the motor body, a motor shell is arranged on the motor body, an air bag shell body is connected to the motor shell in a sealing mode, an air hole is formed in the motor shell, and the air hole is covered with the air bag shell body. And an air bag body which is communicated with the inner cavity of the motor body through the air hole is arranged in the air bag outer shell. The utility model can effectively prevent condensate water from existing in the motor in the drying equipment, and has the advantages of effectively protecting the motor, ensuring the working efficiency of the motor and prolonging the service life of the motor.

Description

Technical Field

[0001] The utility model relates to a structure of a motor arranged in a container (including a heating container, etc.), in particular to a motor anti-condensation water structure. Background Art

[0002] At present, in drying and baking equipment, a motor needs to be installed for power driving of air intake and exhaust. The position where the motor is installed is sometimes arranged in the inner cavity of the equipment. Generally, the motor is a sealed cavity, but it has a built-in cooling device inside. Condensation water in the motor may be formed as follows: during the operation of the motor, the internal air is discharged outward. After the motor is cooled, the air in the drying equipment will enter the inside of the motor through the holes of the motor terminal box, etc. There are also some motors provided with drain holes to prevent the existence of condensation water inside the motor. However, when the motor is not installed horizontally, the condensation water inside the motor will not drain along the drain holes, which is likely to corrode the bearings and rotors inside the motor, thus affecting the service life and working efficiency of the motor. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a motor anti-condensation water structure, which can not only prevent the problem of condensation water existing inside due to the start and stop of the motor.

[0004] To solve the above technical problem, the motor anti-condensation water structure provided by the utility model includes a motor body and a motor housing arranged on the motor body. The structural feature is that: an airbag housing body is hermetically connected to the motor housing, the motor housing is provided with a ventilation hole and the airbag housing body covers the outside of the ventilation hole, and an airbag body communicated with the inner cavity of the motor body through the ventilation hole is arranged inside the airbag housing body.

[0005] After adopting the above structure, due to the arrangement of the airbag body communicated with the above inner cavity, when the gas in the inner cavity of the motor body expands and contracts due to heat, it will perform internal circulation with the inner cavity of the airbag body, and will no longer circulate with the air in the drying equipment. Therefore, the external air will no longer enter the inner cavity of the motor, and no condensation water will be generated. There is no condensation water in the inner cavity of the motor, effectively ensuring the working efficiency of the motor and effectively protecting the motor, and prolonging the service life of the motor.

[0006] The motor housing is connected with a connecting pipe covering the outer wall of the ventilation hole. The motor housing is connected with the airbag body through a fixing device, and one end of the connecting pipe is connected to the motor housing and the other end extends into the airbag body.

[0007] A connecting ring is hermetically connected to the motor housing, and the connecting pipe is located in the ring of the connecting ring. The airbag body covers the outer ring surface of the connecting ring, and a sealing clamp locks the opening part of the airbag body on the outer ring surface of the connecting ring.

[0008] The opening of the airbag body is hermetically connected with a connecting air pipe, and the connecting air pipe is hermetically inserted into the ventilation hole.

[0009] The motor housing is connected with a connecting pipe covering the outer wall of the ventilation hole. The connecting air pipe sequentially passes through the connecting pipe and the ventilation hole, and the outer wall of the connecting air pipe is hermetically connected with the inner wall of the connecting pipe through a sealing plug.

[0010] The airbag housing is provided with circulation air holes, and a filter net covering the circulation air holes is installed on the inner wall of the airbag housing.

[0011] The airbag housing is provided with a ring edge that can fit the outer surface of the motor housing, and a sealing ring is provided between the ring edge and the motor housing.

[0012] A plurality of sealing protrusions or ring convex stripes are provided on the outer circular ring surface of the ring edge.

[0013] In summary, the utility model can effectively prevent the existence of condensed water in the motor in the drying equipment, and has the advantages of effectively protecting the motor, ensuring the working efficiency of the motor, and prolonging the service life of the motor. Description of the Drawings

[0014] The following further describes the utility model with reference to the drawings:

[0015] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0016] Figure 2 is Figure 1 an enlarged schematic structural diagram of area A in

[0017] Figure 3 is Figure 2 an enlarged view of the ring edge in

[0018] Figure 4 is Figure 1 a schematic structural diagram of the circulation air holes arranged on the airbag housing in the embodiment;

[0019] Figure 5 is a schematic structural diagram of another embodiment of the utility model;

[0020] Figure 6 is a schematic structural diagram of a motor in the prior art. Detailed Embodiment

[0021] As Figure 6As shown in the figure, the basic structure of an existing motor is schematically shown, which includes a motor housing on the motor body and a junction box. Due to the presence of the junction box, it is difficult to ensure the sealing effect at the connection part between the junction box and the motor and the part through which the circuit passes. When the motor is working, the air inside the motor heats up and expands, and when it stops working, the internal gas temperature is low and the volume shrinks. Therefore, the air inside the motor will exchange with the outside air along with the above-mentioned expansion and contraction. However, in the field of drying equipment, the outside air contains water vapor, and the outside air entering the motor will form condensed water. If condensed water exists in the motor for a long time, it will damage components such as the motor rotor and bearings, making it difficult to ensure the working efficiency of the motor and even reducing the service life of the motor. In the prior art, there is also the following structure where a drain hole is provided on the motor housing, but it is generally set at the bottom of the motor. When the motor is placed flat, drainage can be achieved, but when the motor is installed in other ways, it cannot achieve drainage, thus greatly reducing the versatility of the motor (separate drain holes need to be set to meet the installation requirements of the motor). Currently, there is no good way to solve the problem of no condensed water in the motor.

[0022] The utility model provides a motor anti-condensation water structure. For the convenience of description, in this embodiment, the inner and outer directions refer to the inside being close to the inner cavity of the motor. And each of the following connections can be understood as a direct connection or an indirect connection through other structures.

[0023] Refer to Figures 1 to 4 As shown, the utility model provides a best embodiment, which includes a motor body and a motor junction box 10 connected to the motor body. A motor housing 1 is provided on the motor body. A gasbag housing body 2 is hermetically connected to the motor housing 1. The motor housing 1 is provided with a ventilation hole 8, and the gasbag housing body 2 covers the outside of the ventilation hole 8. Figure 2 Only one ventilation hole 8 is shown in the figure. Of course, any number of ventilation holes 8 can be set according to needs. A gasbag body 4 is arranged inside the gasbag housing body 2 and is communicated with the inner cavity of the motor body through the ventilation hole 8. The motor housing 1 is connected with a connecting pipe 5 covering the outer wall of the ventilation hole 8. The motor housing 1 is connected with the gasbag body 4 through a fixing device, and one end of the connecting pipe 5 is connected to the motor housing and the other end extends into the gasbag body 4. Of course, the above-mentioned connecting pipe 5 can be not provided, and the ventilation hole 8 is directly communicated with the gasbag body 4. The advantage of setting the above-mentioned connecting pipe is that the gas can be fully guided. A connecting ring 6 is hermetically connected to the motor housing 1, and the connecting pipe 5 is located in the ring of the connecting ring 6. The gasbag body 4 covers the outer ring surface of the connecting ring, and a sealing clamp 7 locks the opening part of the gasbag body 4 on the outer ring surface of the connecting ring 6. Of course, other methods can be used to lock the opening part of the gasbag body 4. The structure of using the sealing clamp 7 is the simplest and can achieve quick connection.

[0024] Refer to Figures 1 to 4As shown, the airbag outer shell 2 is provided with circulation air holes 3, and a filter net 20 covering the circulation air holes 3 is installed on the inner wall of the airbag outer shell 2. When the airbag body 4 expands and contracts, the intake and exhaust of air on the inner wall of the airbag outer shell 2 can be realized, preventing the positive and negative pressure problems of the gas in the inner cavity. The airbag outer shell 2 is provided with a ring edge 21 that can fit on the outer surface of the motor housing 1. A sealing ring 9 is provided between the ring edge 21 and the motor housing 1. Multiple sealing protrusions or ring convex patterns are provided on the outer circular ring surface of the ring edge 21. In this embodiment, sealing protrusions 22 are provided. The functions of the above-mentioned sealing ring 9 and the sealing protrusions are to ensure the sealing performance between the airbag outer shell and the motor housing.

[0025] Reference Figure 5 As shown, the present utility model provides another embodiment, whose basic structure is the same as that of the above embodiment, and the difference lies in the connection structure between the airbag body 4 and the inner cavity of the motor body. Specifically: The opening part of the airbag body 4 is hermetically connected with a connecting air pipe 41, and the connecting air pipe 41 is hermetically inserted into the ventilation hole 8. The motor housing 1 is connected with a connecting pipe 5 covering the outer wall of the ventilation hole 8. The connecting air pipe 41 sequentially passes through the connecting pipe and the ventilation hole, and the outer wall of the connecting air pipe 41 is hermetically connected with the inner wall of the connecting pipe 5 through a sealing plug 42. When the gas in the inner cavity of the motor body expands and contracts thermally, it will enter the airbag body through the connecting air pipe or enter the inner cavity of the motor body from the airbag body through the connecting air pipe, realizing the internal circulation of the gas.

[0026] Through the description of the above embodiments, it can be seen that the present utility model realizes the internal circulation of the air in the inner cavity of the motor body during thermal expansion and contraction, avoids the cyclic contact of the air with the external air, and also avoids the entry of the air containing water vapor into the motor. Therefore, condensed water will no longer accumulate in the inner cavity of the motor. The motor with this structure can be used not only in the drying equipment described in this application, but also in other equipment.

[0027] The present utility model is not limited by the above embodiments. For those skilled in the art of this technology, the equivalent changes and component replacements based on the specific structure of the present utility model are all within the protection scope of the present utility model.

Claims

1. A motor anti-condensation water structure, comprising a motor body and a motor terminal box (10) connected to the motor body, wherein a motor housing (1) is provided on the motor body, wherein: The motor housing (1) is sealedly connected to an airbag outer shell (2); a vent hole (8) is provided on the motor housing (1) and the airbag outer shell (2) covers the outside of the vent hole (8); and an airbag body (4) is provided inside the airbag outer shell (2) and is connected to the inner cavity of the motor body through the vent hole (8).

2. The motor anti-condensation water structure according to claim 1 is characterized in that: The motor housing (1) is connected to a connecting pipe (5) covered on the outer wall of the air vent (8); the motor housing (1) is connected to the airbag body (4) via a fixing device; one end of the connecting pipe (5) is connected to the motor housing, and the other end extends into the interior of the airbag body (4).

3. The motor anti-condensation water structure according to claim 2 is characterized in that: A connecting ring (6) is sealingly connected to the motor housing (1), and the connecting pipe (5) is located in the ring of the connecting ring (6); the airbag body (4) is covered on the outer ring surface of the connecting ring, and the sealing clamp (7) locks the opening of the airbag body (4) on the outer ring surface of the connecting ring (6).

4. The motor anti-condensation water structure according to claim 1 is characterized in that: The opening of the airbag body (4) is sealedly connected to a connecting air pipe (41), and the connecting air pipe (41) is sealedly inserted into the air vent (8).

5. The motor anti-condensation water structure according to claim 4 is characterized in that: The motor housing (1) is connected to a connecting pipe (5) covered on the outer wall of the air vent (8); the connecting air pipe (41) passes through the connecting pipe and the air vent in sequence; the outer wall of the connecting air pipe (41) is sealedly connected to the inner wall of the connecting pipe (5) via a sealing plug (42).

6. The motor anti-condensation water structure according to any one of claims 1 to 5, characterized in that: The airbag outer shell (2) is provided with a circulation air hole (3), and the inner wall of the airbag outer shell (2) is provided with a filter net (20) covering the circulation air hole (3).

7. The motor anti-condensation water structure according to any one of claims 1 to 5, characterized in that: The airbag outer shell (2) is provided with a ring edge (21) that can fit with the outer surface of the motor shell (1), and a sealing ring (9) is provided between the ring edge (21) and the motor shell (1).

8. The motor anti-condensation water structure according to claim 7 is characterized in that: A plurality of sealing protrusions or annular convex patterns are provided on the outer annular surface of the annular edge (21).

Images