Heat dissipation structure of oil-free air compressor

Abstract

The utility model relates to the technical field of air compressors, and discloses a heat dissipation structure of an oil-free air compressor, which is characterized by comprising a cylinder body and a connecting body arranged in the cylinder body, a flow channel is formed between the inner side of the cylinder body and the outer side of the connecting body, and a convex section is formed at one end of the cylinder body close to a motor. Air flow flowing into the flow channel flows out from the first air outlet, the air flow takes away part of heat on the cylinder body and also drives heat at the joint of the cylinder body and the motor shell, and the first air outlet is formed towards one side of the motor, so that the air flow can be blown to the outer surface of the motor shell after flowing out from the first air outlet, and the motor shell is cooled; the second air outlet is formed in the side, close to the protruding section, of the cylinder body, the number of the air outlets in the cylinder body is increased, the staying time of airflow in the flow channel is shortened, and therefore heat dissipation is better achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, and more specifically to a heat dissipation structure of an oil-free air compressor. Background Art

[0002] The oil-free air compressor consists of a motor, a cylinder and a piston assembly. The motor drives the piston assembly to move, thereby compressing the air and delivering the compressed air. The motor will generate a lot of heat during operation. If it is overheated, it will affect the use status and even the service life of the motor. Therefore, the motor needs to be cooled down.

[0003] In the invention with patent application number 202311194007.7, the airflow flows into the cylinder body and out from the circular holes on the side of the cylinder body by rotating the fan blades, thereby cooling the cylinder body and the motor part. However, this cooling method has poor cooling ability for the outer surface of the motor. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a heat dissipation structure for an oil-free air compressor, which is used to improve the cooling capacity of the outer surface of the motor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat dissipation structure of an oil-free air compressor, comprising a cylinder body and a connector arranged in the cylinder body, a flow channel is formed between the inner side of the cylinder body and the outer side of the connector, a raised section is provided at one end of the cylinder body close to the motor, a first air outlet facing one side of the motor is formed at the raised section, and the first air outlet is connected to the flow channel.

[0006] As a further improvement of the present invention, a plurality of the raised segments are provided, and the plurality of the raised segments are evenly distributed circumferentially along the central axis of the motor.

[0007] As a further improvement of the utility model, a second air outlet is provided on a side of the cylinder body close to the raised section.

[0008] As a further improvement of the present invention, the raised section is detachably connected to the cylinder body.

[0009] As a further improvement of the present invention, a sealing gasket is provided between the raised section and the cylinder body.

[0010] As a further improvement of the present invention, the flow channel includes an air inlet chamber, a circulation chamber and a connecting chamber, the air inlet chamber is connected to the circulation chamber, and the circulation chamber is connected to the first air outlet through the connecting chamber.

[0011] As a further improvement of the present invention, the connecting cavity includes an air inlet, and the end of the motor housing extends to the air inlet.

[0012] As a further improvement of the present invention, the diameter of the circulation cavity decreases from one end close to the air inlet cavity to one end away from the air inlet cavity.

[0013] The beneficial effects of the utility model are as follows: the airflow flowing into the flow channel in the utility model will flow out from the first air outlet, the airflow will take away part of the heat on the cylinder body, and will also drive the heat at the connection between the cylinder body and the motor housing, and the first air outlet is arranged toward one side of the motor, so that after the airflow flows out from the first air outlet, it will blow toward the outer surface of the motor housing, thereby cooling the motor housing, so that the cooling effect on the motor is better, and a second air outlet is opened on the side of the cylinder body close to the raised section, which increases the air outlet on the cylinder body and reduces the residence time of the airflow in the flow channel, thereby better realizing heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 4 It is a structural schematic diagram of a cylinder body in the utility model.

[0018] Figure numerals: 1. cylinder body; 2. connecting body; 3. flow channel; 31. air inlet chamber; 32. circulation chamber; 33. connecting chamber; 331. air inlet; 4. raised section; 41. first air outlet; 5. motor; 6. second air outlet. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] Reference Figures 1 to 4As shown, a heat dissipation structure of an oil-free air compressor of the present embodiment comprises a cylinder body 1 and a connecting body 2 arranged in the cylinder body 1, a flow channel 3 is formed between the inner side of the cylinder body 1 and the outer side of the connecting body 2, wherein fan blades are arranged in the flow channel 3, and the motor 5 drives the fan blades to rotate during the rotation process, so that the external air flow flows into the flow channel 3, and a convex section 4 is arranged at one end of the cylinder body 1 close to the motor 5, and the convex section 4 and the cylinder body 1 can be integrally formed, and a first air outlet 41 facing the side of the motor 5 is formed at the convex section 4, and the first air outlet 41 is connected with the flow channel 3, and the airflow flowing into the flow channel 3 will flow out from the first air outlet 41, and the airflow will take away part of the heat on the cylinder body 1, and will also drive the heat at the connection between the cylinder body 1 and the outer shell of the motor 5;

[0021] In addition, the first air outlet 41 is arranged toward one side of the motor 5 , so that after the airflow flows out from the first air outlet 41 , it will blow toward the outer surface of the motor 5 housing, thereby cooling the motor 5 housing and achieving a better cooling effect on the motor 5 .

[0022] Reference Figure 2 As shown, there are multiple raised segments 4, and the multiple raised segments 4 are evenly distributed circumferentially along the central axis of the motor 5. In this embodiment, there are two raised segments 4, and the two raised segments 4 are arranged opposite to each other, thereby increasing the air blowing amount to the outer casing of the motor 5.

[0023] Reference Figure 1 As shown, a second air outlet 6 is provided on one side of the cylinder body 1 close to the raised section 4, so as to increase the number of air outlets on the cylinder body 1 and reduce the residence time of the airflow in the flow channel 3, thereby achieving better heat dissipation.

[0024] The convex section 4 and the cylinder body 1 are detachably connected, and the detachable connection between the convex section 4 and the cylinder body 1 can be achieved by bolt connection;

[0025] A connecting hole is provided on the raised section 4 , which may be a countersunk hole, and a threaded hole is provided on the cylinder body 1 . Bolts pass through the connecting hole and the threaded hole for threaded connection, thereby fixing the raised section 4 to the cylinder body 1 .

[0026] In addition, the raised section 4 can also be detachably connected to the cylinder body 1 through a snap connection or plug-in connection.

[0027] A sealing gasket is provided between the raised section 4 and the cylinder body 1. If the raised section 4 and the cylinder body 1 are detachably connected, the sealing gasket is used to increase the sealing between the raised section 4 and the cylinder body 1 to prevent air leakage from affecting the cooling effect.

[0028] Reference Figure 2 , Figure 3As shown, the flow channel 3 includes an air inlet chamber 31, a flow chamber 32 and a connecting chamber 33. The air inlet chamber 31 is connected to the flow chamber 32, and the flow chamber 32 is connected to the first air outlet 41 through the connecting chamber 33. The fan blade is located in the air inlet chamber 31, and a wind shield can be installed at one end of the air inlet chamber 31 away from the flow chamber 32 to prevent accidental contact with the fan blade, thereby improving safety.

[0029] The circulation cavity 32 is annular and communicates with the air inlet cavity 31 in all directions to facilitate circulation therebetween.

[0030] The connecting chamber 33 includes an air inlet 331, and the end of the motor 5 casing extends to the air inlet 331, so that when the airflow flows from the circulation chamber 32 into the connecting chamber 33, it will take away the heat of the end part of the motor 5 casing, thereby reducing the temperature of the connection between the cylinder body 1 and the motor 5 casing, so as to better achieve cooling.

[0031] The diameter of the circulation cavity 32 decreases from one end close to the air inlet cavity 31 to the end away from the air inlet cavity 31. Preferably, the diameter of the circulation cavity 32 gradually decreases from one end close to the air inlet cavity 31 to the end away from the air inlet cavity 31, which can increase the flow rate of the airflow in the circulation cavity 32, take away heat faster, and cool down better.

[0032] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A heat dissipation structure for an oil-free air compressor, characterized in that: The invention comprises a cylinder body (1) and a connecting body (2) arranged in the cylinder body (1), a flow channel (3) being formed between the inner side of the cylinder body (1) and the outer side of the connecting body (2), a raised section (4) being provided at one end of the cylinder body (1) close to the motor (5), a first air outlet (41) being formed at the raised section (4) and facing the side of the motor (5), and the first air outlet (41) being connected to the flow channel (3).

2. The heat dissipation structure of an oil-free air compressor according to claim 1, characterized in that: A plurality of the raised segments (4) are provided, and the plurality of raised segments (4) are evenly distributed circumferentially along the central axis of the motor (5).

3. The heat dissipation structure of an oil-free air compressor according to claim 1, characterized in that: A second air outlet (6) is provided on a side of the cylinder body (1) close to the raised section (4).

4. The heat dissipation structure of an oil-free air compressor according to claim 1, characterized in that: The raised section (4) is detachably connected to the cylinder body (1).

5. The heat dissipation structure of an oil-free air compressor according to claim 4, characterized in that: A sealing gasket is provided between the raised section (4) and the cylinder body (1).

6. The heat dissipation structure of an oil-free air compressor according to claim 1, characterized in that: The flow channel (3) comprises an air inlet chamber (31), a circulation chamber (32) and a connecting chamber (33); the air inlet chamber (31) is connected to the circulation chamber (32); and the circulation chamber (32) is connected to the first air outlet (41) through the connecting chamber (33).

7. The heat dissipation structure of an oil-free air compressor according to claim 6, characterized in that: The connecting cavity (33) comprises an air inlet (331), and an end of the motor (5) housing extends to the air inlet (331).

8. The heat dissipation structure of an oil-free air compressor according to claim 6, characterized in that: The diameter of the circulation cavity (32) decreases from an end close to the air inlet cavity (31) to an end away from the air inlet cavity (31).

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