Controller heat dissipation structure of air compressor

Abstract

The utility model provides a controller heat dissipation structure of an air compressor, and belongs to the technical field of air compressors. The air compressor structure solves the problem that an existing air compressor structure is poor in heat dissipation effect on a controller. The controller heat dissipation structure of the air compressor comprises a controller assembly, a crankcase, a motor shell and fan blades arranged between the crankcase and the motor shell, the motor shell is provided with a controller installation base, the controller assembly is installed on the controller installation base, a plurality of air inlet holes are formed in the motor shell, part of the air inlet holes are communicated with the controller installation base, and the air inlet holes are communicated with the motor shell. The fan blades can blow air towards the crankcase side so that external air can be sucked into the motor shell from the air inlet holes. According to the structure, part of the air inlet holes are communicated with the controller installation base, heat emitted by the controller assembly is directly absorbed away through the air inlet holes, the heat dissipation and cooling effect on the controller assembly is further improved, and the service life of the controller assembly is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressors, in particular to a heat dissipation structure of a controller of an air compressor. Background Art

[0002] An air compressor is a device that converts mechanical energy into gas pressure. It is widely used in industries such as chemical, machinery, medical, textile, electric power, automotive, and military. The controller is a key component of the air compressor, controlling its start, stop, and operating mode. For example, the China Patent Network discloses an air compressor [Authorization Announcement No.: CN220395941U]. The motor housing is provided with an air inlet and outlet, and a control box is mounted on top of the motor housing. The control box houses a controller that controls the operation of the motor.

[0003] The above-mentioned air compressor has the following defects: the entire control box is installed on the casing, and the controller is set inside the control box. This structure cannot effectively dissipate heat for the controller inside the control box. After the air compressor has been working for a long time, the temperature of the controller is high, which affects the service life of the controller and also poses certain safety hazards. Utility Model Content

[0004] The purpose of the present invention is to solve the above problems in the existing technology and propose a heat dissipation structure for a controller of an air compressor. The technical problem to be solved by the present invention is: how to improve the heat dissipation effect of the controller.

[0005] The purpose of this utility model can be achieved through the following technical solutions:

[0006] A controller heat dissipation structure for an air compressor includes a controller assembly, a crankcase, a motor housing, and fan blades arranged between the crankcase and the motor housing. The structure is characterized in that the motor housing has a controller mounting seat, the controller assembly is mounted on the controller mounting seat, a plurality of air inlet holes are opened on the motor housing, some of the air inlet holes are connected to the controller mounting seat, and the fan blades can blow air toward the crankcase side so that the outside air is sucked into the motor housing through the air inlet holes.

[0007] Since the controller mounting base and the motor housing are integrally formed, after the controller assembly is set on the controller mounting base, the controller assembly is in direct contact with the motor housing. When the air compressor is working, the heat generated by the operation of the controller assembly is transferred to the motor housing, and the fan blades blow air toward the crankcase, and the outside wind is sucked into the motor housing through the air inlet holes. Since the air inlet holes are arranged at circumferential intervals on the motor housing, the airflow takes away the heat of the motor housing and the heat of the motor inside the motor housing after passing through the air inlet holes, dissipates heat and cools the motor housing and the motor, and indirectly dissipates heat and cools the controller assembly. Furthermore, since some of the air inlet holes are connected to the controller mounting base, the heat emitted by the controller assembly is directly absorbed through the air inlet holes, further improving the heat dissipation and cooling effect of the controller assembly and extending the service life of the controller assembly.

[0008] In the aforementioned air compressor controller heat dissipation structure, the controller assembly includes a heat sink, a control circuit board, and power devices mounted on the control circuit board. The heat sink contacts the power devices. Heat generated by the power devices is transferred to the heat sink, which contacts the motor housing, allowing some of the heat from the heat sink to be transferred to the motor housing. The rotation of the impellers creates negative pressure suction, dissipating heat from the motor housing and indirectly cooling the heat sink, thereby improving the heat dissipation of the controller assembly.

[0009] In the above-mentioned heat dissipation structure of the controller of an air compressor, the motor housing and the controller mounting base are integrally formed.

[0010] In the above-mentioned heat dissipation structure of the controller of an air compressor, the motor housing and the controller mounting seat are split structures.

[0011] In the above-mentioned heat dissipation structure of the controller of an air compressor, the number of the control circuit boards is one or more.

[0012] In the above-mentioned controller heat dissipation structure of an air compressor, the controller mounting seat includes a receiving box, the control circuit board is provided with a capacitor, and the capacitor is arranged in the receiving box. The provision of the receiving box facilitates the installation of the capacitor.

[0013] In the aforementioned air compressor controller heat dissipation structure, the controller assembly includes a control button. The motor housing is provided with a cover that covers the controller mounting base, and the control button extends outside the cover. The control button is used to control the start and stop and operating mode of the air compressor.

[0014] In the above-mentioned heat dissipation structure of the controller of an air compressor, the motor housing is injection molded.

[0015] In the above-mentioned heat dissipation structure of the controller of the air compressor, there are two crankcases, and both ends of the motor housing are provided with the air inlet holes.

[0016] In the aforementioned air compressor controller heat dissipation structure, the motor housing is provided with an inner air hole, which is located closer to the center of the motor housing relative to the air inlet. In this structure, outside air enters the motor housing through the inner air hole and flows along the inner wall of the motor housing toward the end of the motor, removing heat from both the motor housing and the motor, thereby dissipating heat and cooling both the motor housing and the motor.

[0017] Compared with the prior art, the controller heat dissipation structure of the air compressor of the present invention has the following advantages: the heat generated by the operation of the controller component of this structure is transferred to the motor casing, the fan blades blow air toward the crankcase, and the outside wind is sucked into the motor casing through the air inlet holes. Since the air inlet holes are arranged at circumferential intervals on the motor casing, the wind flows through the air inlet holes and takes away the heat of the motor casing and the heat of the motor inside the motor casing, dissipating the heat and cooling the motor casing and the motor, and indirectly dissipating the heat and cooling the controller component; further, since some of the air inlet holes are connected to the controller mounting seat, the heat emitted by the controller component is directly absorbed through the air inlet holes, further improving the heat dissipation and cooling effect of the controller component and extending the service life of the controller component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of the utility model.

[0019] Figure 2 This is one of the cross-sectional structural diagrams of the present utility model.

[0020] Figure 3 It is a three-dimensional structural diagram of the motor housing of the utility model.

[0021] Figure 4 This is the second schematic diagram of the cross-sectional structure of the present utility model.

[0022] Figure 5 It is a three-dimensional structural diagram of the controller component of the utility model.

[0023] Figure 6 It is a partial three-dimensional structural schematic diagram of the utility model.

[0024] Figure 7 It is a schematic diagram of the partial explosion structure of the utility model.

[0025] Figure 8 It is a three-dimensional structural diagram of the motor housing of the utility model.

[0026] In the figure, 1. controller assembly; 10. heat sink; 11. control circuit board; 12. power device; 13. control button; 14. capacitor; 2. crankcase; 3. motor housing; 30. controller mounting base; 31. air inlet; 32. storage box; 4. fan blade; 5. cover. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figures 1 to 7 As shown, the controller heat dissipation structure of this air compressor includes a controller assembly 1, a crankcase 2, a motor housing 3, and fan blades 4 disposed between the crankcase 2 and the motor housing 3. In this embodiment, the motor housing 3 is injection molded. A controller mounting base 30 is formed on the motor housing 3, and the controller assembly 1 is mounted on the controller mounting base 30. The motor housing 3 is provided with a plurality of air inlet holes 31 along its circumference, some of which are connected to the controller mounting base 30. The fan blades 4 can blow air toward the crankcase 2, so that external air is drawn into the motor housing 3 through the air inlet holes 31. Since the controller mounting base 30 and the motor housing 3 are integrally formed, after the controller component 1 is set on the controller mounting base 30, the controller component 1 is in direct contact with the motor housing 3. During the operation of the air compressor, the heat generated by the operation of the controller component 1 is transferred to the motor housing 3, and the fan blades blow air toward the crankcase 2. The outside wind is sucked into the motor housing 3 through the air inlet holes 31. Since the air inlet holes 31 are arranged at circumferential intervals on the motor housing 3, the wind flows through the air inlet holes 31 and takes away the heat of the motor housing 3 and the heat of the motor in the motor housing 3, dissipating the heat and cooling the motor housing 3 and the motor, and then indirectly dissipating the heat and cooling the controller component 1; further, since some of the air inlet holes 31 are connected to the controller mounting base 30, the heat emitted by the controller component 1 is directly absorbed through the air inlet holes 31, further improving the heat dissipation and cooling effect of the controller component 1 and extending the service life of the controller component 1. The air compressor of this embodiment has two crankcases 2, and air inlet holes 31 are provided at both ends of the motor housing 3, so that air can be sucked from both ends of the controller mounting base 30 and the heat emitted by the controller component 1 can be taken away, further improving the heat dissipation effect of the controller component 1.

[0029] like Figures 3 to 7 As shown, the controller assembly 1 includes a heat sink 10, a control circuit board 11, and a power device 12 arranged on the control circuit board 11, and the number of the control circuit boards 11 is one or more than two. The controller mounting base 30 includes a accommodating box 32, the capacitor 14 is arranged in the accommodating box 32, the heat sink 10 is connected to the control circuit board 11, the heat sink 10 is in contact with the motor housing 3, and the end of the heat sink 10 is arranged near the part of the air inlet 31. Since the end of the heat sink 10 is arranged near the part of the air inlet 31, the heat generated by the heat sink 10 is directly taken away during the process of the fan blade rotating to form a negative pressure suction, which significantly improves the heat dissipation effect of the heat sink 10, and thus improves the heat dissipation effect of the controller assembly 1.

[0030] The motor housing 3 and the controller mounting base 30 are integrally formed, or the motor housing 3 and the controller mounting base 30 are split structures, that is, the controller mounting base 30 is fixed to the motor housing 3 by fasteners or other fixing methods.

[0031] Further, such as Figure 2 、 Figure 3 、 Figure 4 and Figure 7 As shown, the outer wall of the motor housing 3 is provided with a heat sink 33 at a position inside the controller mounting base 30. The heat sink 33 is arranged along the axial direction of the motor housing 3. A ventilation duct 6 is formed between two adjacent heat sinks 33. The end of the ventilation duct 6 is connected to the air inlet 31. The heat sink 10 includes heat sink fins 100. The heat sink 10 is inverted on the motor housing 3. Each heat sink fin 100 is located in the corresponding ventilation duct 6. The heat sink fin 100 is the main heat dissipation component of the heat sink 10. Since the heat sink 10 is inverted on the motor housing 3, at least one heat sink 100 is inserted in each ventilation duct 6. The heat dissipated outward by the heat sink 100 is basically located in the ventilation duct 6, and the end of the ventilation duct 6 is connected to the air inlet 31. When the fan blades rotate, the heat in the ventilation duct 6 is sucked away through the air inlet 31, further improving the heat dissipation effect of the heat sink 10.

[0032] like Figure 1 As shown, the controller assembly 1 includes a control button 13 , and a cover 5 is provided on the motor housing 3 and covers the controller mounting seat 30 , and the control button 13 passes through the outside of the cover 5 .

[0033] like Figure 8 As shown, the motor housing 3 is provided with inner air holes 34. The inner air holes 34 are arranged near the middle of the motor housing 3 relative to the air inlet holes 31. In this embodiment, the air inlet holes 31 are arranged near the end of the motor, while the inner air holes 34 are relatively far away from the end of the motor. A plurality of inner air holes 34 are also arranged at intervals along the circumference of the motor housing 3. External air enters the motor housing 3 through the inner air holes 34 and flows along the inner wall of the motor housing 3 toward the end of the motor, removing heat from both the motor housing 3 and the motor, thereby dissipating heat and cooling both the motor housing 3 and the motor.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A controller heat dissipation structure for an air compressor, comprising a controller assembly (1), a crankcase (2), a motor housing (3), and a fan blade (4) arranged between the crankcase (2) and the motor housing (3), characterized in that: The motor housing (3) has a controller mounting seat (30), the controller assembly (1) is mounted on the controller mounting seat (30), a plurality of air inlet holes (31) are provided on the motor housing (3), some of the air inlet holes (31) are connected to the controller mounting seat (30), and the fan blades (4) are capable of blowing air toward the crankcase (2) so that external air is sucked into the motor housing (3) through the air inlet holes (31).

2. The heat dissipation structure of an air compressor controller according to claim 1, characterized in that: The controller assembly (1) comprises a heat sink (10), a control circuit board (11), and a power device (12) arranged on the control circuit board (11), wherein the power device (12) is in contact with the heat sink (10).

3. The heat dissipation structure of an air compressor controller according to claim 1, characterized in that: The motor housing (3) and the controller mounting seat (30) are integrally formed.

4. The heat dissipation structure of an air compressor controller according to claim 1, characterized in that: The motor housing (3) and the controller mounting seat (30) are split structures.

5. The heat dissipation structure of an air compressor controller according to claim 2, characterized in that: The number of the control circuit boards (11) is one or more.

6. The heat dissipation structure of an air compressor controller according to claim 2, characterized in that: The controller mounting seat (30) includes a accommodating box (32), a capacitor (14) is provided on the control circuit board (11), and the capacitor (14) is arranged in the accommodating box (32).

7. The heat dissipation structure of an air compressor controller according to claim 1, characterized in that: The controller assembly (1) includes a control button (13), and the motor housing (3) is provided with a cover (5) which is covered on a controller mounting seat (30).

8. The heat dissipation structure of an air compressor controller according to claim 1, characterized in that: The motor housing (3) is injection molded.

9. The heat dissipation structure of an air compressor controller according to claim 1 or 2, characterized in that: The crankcase (2) has two parts, and both ends of the motor housing (3) are provided with the air inlet holes (31).

10. The heat dissipation structure of an air compressor controller according to claim 1 or 2, characterized in that: An inner air hole (34) is provided on the motor housing (3), and the inner air hole (34) is arranged near the middle of the motor housing (3) relative to the air inlet hole (31).

Images