Air cooling structure of induction heating power supply

Abstract

The utility model relates to the field of induction heating power supplies, and discloses an air cooling structure of an induction heating power supply, a mounting plate divides the interior of a case into a heat dissipation cavity and a mounting cavity, two symmetrically arranged heat dissipation fans are mounted in a round hole in the top end of the case, a plug-in port is formed in the lower portion of the front side surface of the case, and the plug-in port is connected with the mounting cavity. An insertion opening is formed in the bottom end of the case, an air inlet assembly is arranged in the insertion opening and comprises a mounting frame, the interior of the mounting frame is designed to be hollow, an air inlet is formed in the front side of the mounting frame, a mounting opening is formed in the top of the mounting frame, and filter cloth is laid in the mounting opening. The bent filter cloth is arranged in the air inlet assembly, the area of the filter cloth is increased as much as possible in a limited space, the ventilation area of the filter cloth is increased, the air inlet effect is further improved, fine dust in airflow can be screened and filtered, and the fine dust cannot be attached to the surfaces of devices such as an induction circuit, an IGBT and a rectifying circuit.

Description

Technical Field

[0001] The utility model relates to the field of induction heating power supplies, in particular to an air cooling structure of an induction heating power supply. Background Art

[0002] The basic principle of electromagnetic induction heating is that the coil passes a current of a certain frequency, thereby generating an alternating magnetic field, causing the inducted body to heat itself, and heating, surface treatment and other tasks are completed through sensors of different styles. In the Chinese utility model patent with announcement number CN204217149U, a new type of air-cooled IGBT induction heating power supply device is disclosed. The device is small in size, light in weight, high in efficiency, and high in control accuracy. All power devices are all air-cooled, and the cooling effect is excellent. In the above structure, in order to ensure the internal heat dissipation effect, a cooling fan is installed on the top of the chassis, and holes and shutters are opened on the bottom and sides of the chassis for heat dissipation and air convection. When the cooling fan draws the internal heat outward, the external airflow will also enter the chassis through the holes and shutters. There is no corresponding dustproof structure in the holes and shutters, which allows external dust to enter the chassis through the holes and shutters and affect the internal components. For this reason, we designed an air-cooled structure for an induction heating power supply. Summary of the invention

[0003] In order to solve the technical problem that external dust can enter into the inside of the chassis through holes and shutters and affect the internal components, the utility model provides an air cooling structure of an induction heating power supply.

[0004] The utility model is implemented by the following technical scheme: an air-cooling structure of an induction heating power supply, comprising a chassis, a mounting plate is arranged inside the chassis, an induction circuit and devices such as an IGBT and a rectifier circuit are fixed on the mounting plate by means of thermal conductive silicone grease and screws, the mounting plate divides the inside of the chassis into a heat dissipation cavity and a mounting cavity, and two symmetrically arranged heat dissipation fans are installed in the circular hole at the top of the chassis;

[0005] A plug interface is provided below the front surface of the chassis, an air inlet assembly is arranged in the plug interface, the air inlet assembly includes a mounting frame, the interior of the mounting frame is hollow, an air inlet is provided on the front side of the mounting frame, a mounting opening is provided on the top of the mounting frame, a filter cloth is laid in the mounting opening.

[0006] As a further improvement of the above scheme, the two cooling fans are located at the partition above the cooling cavity and the installation cavity. The two cooling fans are generally located above the cooling cavity, and the other half is located above the installation cavity. This allows the airflow inside the cooling cavity and the installation cavity to flow from bottom to top, thereby facilitating the rapid discharge of internal heat.

[0007] As a further improvement of the above scheme, a plurality of equally spaced heat dissipating fins are provided on the rear surface of the mounting plate, the heat dissipating fins and the mounting plate are both made of thermally conductive material, and the four surfaces of the mounting plate are respectively in contact with the four internal surfaces of the chassis. The heat generated by the sensing circuit and components such as the IGBT and the rectifier circuit can be transferred to the mounting plate and the heat dissipating fins, and then can be quickly discharged along with the flowing airflow, thereby improving the heat dissipation effect.

[0008] As a further improvement of the above scheme, a plurality of air inlets are arranged at equal intervals on the rear surface of the chassis to facilitate the entry of external airflow, thereby forming convection and improving the airflow efficiency, and an exhaust port is arranged at the bottom end of the right side surface of the chassis, and the exhaust port is communicated with the heat dissipation cavity;

[0009] The left side of the bottom of the heat dissipation cavity is higher than the right side, and some water may enter the heat dissipation cavity through the air inlet, thereby facilitating the discharge of the internal water flow.

[0010] As a further improvement of the above solution, a protective plate is provided on the top of the chassis in suspension through a bracket, which can protect the top of the chassis and prevent water and debris from falling into the cooling fan.

[0011] As a further improvement of the above scheme, a plurality of equally spaced guide rods are provided in the mounting opening of the mounting frame, and the filter cloth is bent in sequence and passes through the plurality of guide rods. Both ends of the filter cloth are located above the mounting frame and are fixed by screws, so that the filter cloth is bent, thereby increasing the area of ​​the filter cloth as much as possible within a limited space, thereby increasing its ventilation area and improving the air intake effect.

[0012] As a further improvement of the above scheme, a filter is installed in the air inlet opened on the front side of the installation frame by screws, and the front surface of the filter is flush with the front surface of the chassis, which is convenient for installation and removal of the filter. The design of the filter makes it difficult for external debris to enter.

[0013] As a further improvement of the above solution, a frame is provided on the front side of the installation frame, and an embedding groove is extended on the outer front side of the plug interface. The frame is snapped into the embedding groove and connected by screws to facilitate the installation and disassembly of the air inlet assembly, and further facilitate the subsequent cleaning of the filter cloth.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model arranges a mounting plate inside the chassis, and a heat dissipation fin is arranged on the rear side of the mounting plate. The induction circuit, IGBT, rectifier circuit and other devices are mounted on the mounting plate, so that part of the heat generated by them during operation is transferred to the heat dissipation fins. With the two heat dissipation fans arranged, they can be cooled and lowered at the same time, thereby improving the air cooling effect;

[0016] 2. By setting an air intake assembly at the bottom of the chassis, a curved filter cloth is provided in the air intake assembly, and the area of ​​the filter cloth is increased as much as possible within a limited space, so that the ventilation area is increased, thereby improving the air intake effect, and being able to filter and filter the fine dust in the airflow so that it will not adhere to the surface of the induction circuit, IGBT, rectifier circuit and other devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an air-cooling structure of an induction heating power supply provided by the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram without protective plate installed;

[0019] Figure 3 for Figure 2 Schematic diagram of the middle mounting plate inside the chassis;

[0020] Figure 4 for Figure 1 The left and right isometric drawings;

[0021] Figure 5 for Figure 1 Schematic diagram of the middle air intake assembly;

[0022] Figure 6 for Figure 5 Schematic diagram of the mounting frame and guide rods.

[0023] Description of main symbols:

[0024] 1. Chassis; 11. Air inlet; 12. Exhaust outlet; 2. Air inlet assembly; 21. Mounting frame; 22. Filter cloth; 23. Guide rod; 24. Filter net; 25. Frame; 26. Mounting opening; 3. Protective plate; 4. Cooling fan; 5. Mounting plate; 51. Cooling fins. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. Example

[0026] Please combine Figure 1-Figure 6, an air cooling structure of an induction heating power supply of the present embodiment includes a chassis 1, a mounting plate 5 is arranged inside the chassis 1, an induction circuit and components such as an IGBT and a rectifier circuit are fixed on the mounting plate 5 by means of thermal conductive silicone grease and screws, the mounting plate 5 divides the inside of the chassis 1 into a heat dissipation cavity and a mounting cavity, and two symmetrically arranged heat dissipation fans 4 are installed in the circular hole at the top of the chassis 1;

[0027] A plug interface is provided below the front surface of the chassis 1, and an air inlet assembly 2 is arranged in the plug interface. The air inlet assembly 2 includes a mounting frame 21. The interior of the mounting frame 21 is hollow, and an air inlet is provided on the front side of the mounting frame 21. A mounting opening 26 is provided on the top of the mounting frame 21, and a filter cloth 24 is laid in the mounting opening 26.

[0028] The two cooling fans 4 are both located at the partition above the cooling cavity and the installation cavity. The two cooling fans 4 are generally located above the cooling cavity, and the other half is located above the installation cavity. This allows the airflow inside the cooling cavity and the installation cavity to flow from bottom to top, thereby facilitating the rapid discharge of internal heat.

[0029] The rear surface of the mounting plate 5 is provided with a plurality of heat dissipating fins 51 distributed at equal intervals. The heat dissipating fins 51 and the mounting plate 5 are both made of heat-conducting materials, and the four surfaces of the mounting plate 5 are respectively in contact with the four internal surfaces of the chassis 1. The heat generated by the sensing circuit and the IGBT, the rectifier circuit and other components can be transferred to the mounting plate 5 and the heat dissipating fins 51, and then can be quickly discharged along with the flowing airflow, thereby improving the heat dissipation effect.

[0030] A plurality of air inlets 11 are provided at equal intervals on the rear surface of the chassis 1 to facilitate the entry of external airflow, thereby forming convection and improving the airflow efficiency. An exhaust port 12 is provided at the bottom end of the right surface of the chassis 1, and the exhaust port 12 is connected to the heat dissipation cavity.

[0031] The left side of the bottom of the heat dissipation cavity is higher than the right side, and some water may enter the heat dissipation cavity through the air inlet 11, thereby facilitating the discharge of the internal water flow.

[0032] A protective plate 3 is suspended at the top of the chassis 1 through a bracket, which can protect the top of the chassis 1 and prevent water and debris from falling into the cooling fan 4.

[0033] A plurality of equally spaced guide rods 23 are provided in the mounting opening 26 of the mounting frame 21, and the filter cloth 22 is bent in sequence to pass through the plurality of guide rods 23, and both ends of the filter cloth 22 are located above the mounting frame 21 and fixed by screws, so that the filter cloth 22 is bent in design, thereby increasing the area of ​​the filter cloth 22 as much as possible within a limited space, thereby increasing its ventilation area and improving the air intake effect.

[0034] A filter 24 is installed in the air inlet opened on the front side of the installation frame 21 by screws, and the front surface of the filter 24 is flush with the front surface of the chassis 1, which is convenient for installation and removal of the filter 24. The design of the filter 24 makes it difficult for external debris to enter.

[0035] A frame 25 is provided on the front side of the installation frame 21, and an embedding groove is formed on the front side of the outer side of the plug interface. The frame 25 is snapped into the embedding groove and connected by screws, which is convenient for the installation and disassembly of the air inlet assembly 2, and further facilitates the subsequent cleaning of the filter cloth 22.

[0036] The implementation principle of the air-cooling structure of an induction heating power supply in the embodiment of the present application is as follows: in actual use, the heat generated by the induction circuit and the IGBT, the rectifier circuit and other devices during operation will be transferred to the mounting plate 5 and the heat dissipation fins 51, and the two heat dissipation fans 4 are generally located above the heat dissipation cavity, and the other half is located above the mounting cavity. The external airflow enters the heat dissipation cavity through the air inlet 11 and forms convection, which enables the airflow inside the heat dissipation cavity and the mounting cavity to flow from bottom to top, thereby facilitating the rapid discharge of the internal heat, and the airflow inside the mounting cavity will also flow from bottom to top, and allow the cold air to blow toward the induction circuit and the IGBT, the rectifier circuit and other devices, thereby cooling them down, and the external airflow needs to pass through the air inlet assembly 2 before entering the mounting cavity, and the filter cloth 22 in the air inlet assembly 2 will filter the fine dust in the airflow to prevent it from adhering to the surfaces of the induction circuit and the IGBT, the rectifier circuit and other devices;

[0037] By arranging a mounting plate 5 inside the chassis 1, a heat dissipation fin 51 is arranged at the rear side of the mounting plate 5, and the induction circuit, IGBT, rectifier circuit and other devices are mounted on the mounting plate 5, so that part of the heat generated by them during operation is transferred to the heat dissipation fin 51, and the two heat dissipation fans 4 are arranged to cool them down at the same time, thereby improving the air cooling effect;

[0038] By arranging an air intake assembly 2 at the bottom end of the chassis 1, a curved filter cloth 22 is arranged in the air intake assembly 2, and the area of ​​the filter cloth 22 is increased as much as possible within a limited space, so that the ventilation area is increased, thereby improving the air intake effect, and being able to filter and filter fine dust in the airflow so that it will not adhere to the surfaces of the sensing circuit, IGBT, rectifier circuit and other devices.

[0039] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An air cooling structure for an induction heating power supply, comprising a chassis (1), characterized in that: A mounting plate (5) is arranged inside the chassis (1), and the mounting plate (5) divides the inside of the chassis (1) into a heat dissipation cavity and a mounting cavity. Two symmetrically arranged heat dissipation fans (4) are installed in the circular hole at the top of the chassis (1); A plug interface is provided below the front surface of the chassis (1), an air intake assembly (2) is arranged in the plug interface, the air intake assembly (2) comprises a mounting frame (21), the mounting frame (21) is hollow inside, an air intake port is provided on the front side of the mounting frame (21), a mounting opening (26) is provided at the top of the mounting frame (21), and a filter cloth (22) is laid in the mounting opening (26).

2. The air cooling structure of an induction heating power supply according to claim 1, characterized in that: The two heat dissipation fans (4) are both located at the partition above the heat dissipation cavity and the installation cavity.

3. The air cooling structure of an induction heating power supply according to claim 1, characterized in that: The rear surface of the mounting plate (5) is provided with a plurality of heat dissipation fins (51) distributed at equal intervals, the heat dissipation fins (51) and the mounting plate (5) are both made of heat-conducting material, and the four surfaces of the mounting plate (5) are respectively in contact with four surfaces inside the chassis (1).

4. The air cooling structure of an induction heating power supply according to claim 1, characterized in that: The rear surface of the chassis (1) is provided with a plurality of air inlets (11) distributed at equal intervals, and the bottom end of the right surface of the chassis (1) is provided with an exhaust port (12), the exhaust port (12) being in communication with the heat dissipation cavity; The left side of the bottom end of the heat dissipation cavity is higher than the right side.

5. The air cooling structure of an induction heating power supply according to claim 1, characterized in that: A protective plate (3) is suspended in the air at the top of the chassis (1) via a bracket.

6. The air cooling structure of an induction heating power supply according to claim 1, characterized in that: A plurality of guide rods (23) distributed at equal intervals are arranged in the installation opening (26) of the installation frame (21); the filter cloth (22) is bent in sequence and passes through the plurality of guide rods (23); two ends of the filter cloth (22) are located above the installation frame (21) and are fixed by screws.

7. The air cooling structure of an induction heating power supply according to claim 1, characterized in that: A filter screen (24) is installed in the air inlet opened on the front side of the installation frame (21) by means of screws, and the front side surface of the filter screen (24) is flush with the front side surface of the chassis (1).

8. The air cooling structure of an induction heating power supply according to claim 1, characterized in that: The front side of the installation frame (21) is provided with a frame (25), the front side of the outer portion of the plug interface is extended to form an embedding groove, and the frame (25) is snapped into the embedding groove and connected via screws.

Images