Waterproof frequency converter

Abstract

The utility model discloses a waterproof frequency converter, which belongs to the technical field of frequency converters, and comprises a base, the top end of the base is fixedly connected with a damping mechanism, and the top end of the damping mechanism is fixedly connected with a sealing heat dissipation mechanism; the sealing heat dissipation mechanism comprises a sealing shell, the top end of the inner wall of the sealing shell is fixedly connected with heat conduction glue, and the bottom end of the inner wall of the sealing shell is fixedly connected with a circuit board. According to the utility model, heat on the circuit board is transmitted to the sealing shell through the heat-conducting glue, the contact area between the sealing shell and air is increased through the cooling fins, and then the fan is utilized to blow airflow to pass through the surfaces of the cooling fins, so that the heat on the sealing shell is taken away, and in the operation process of the frequency converter, the heat loss is reduced. Electronic components in the frequency converter are protected through the sealing shell, the electronic components are prevented from being affected with damp, meanwhile, heat generated by the frequency converter can be diffused into air more efficiently, and the heat dissipation efficiency of the frequency converter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to a waterproof frequency converter. Background Art

[0002] The inverter is a power control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. The inverter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, microprocessor unit, etc. The inverter adjusts the output power voltage and frequency by the internal IGBT switching, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the inverter has many protection functions, such as over-current, over-voltage, overload protection, etc.

[0003] In the process of using the existing inverter, in order to improve the waterproof performance, a relatively sealed shell is generally set on the outside of the circuit board. However, the relatively sealed shell has certain defects during the operation of the inverter. When the inverter is running, a large amount of heat will be generated. The tightness of the shell is strong, resulting in the air inside the inverter cannot circulate, resulting in poor heat dissipation effect of the inverter. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a waterproof inverter, by arranging a heat sink on the top of the sealed shell, transferring heat to the heat sink through thermal conductive adhesive, and using a fan for heat dissipation, thereby avoiding the problem of poor heat dissipation effect of the existing inverter shell.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: The utility model provides a waterproof inverter, including: a base, the top of the base is fixedly connected with a shock absorbing mechanism, the top of the shock absorbing mechanism is fixedly connected with a sealed heat dissipation mechanism; the sealed heat dissipation mechanism includes a sealed shell, the top of the inner wall of the sealed shell is fixedly connected with a thermal conductive adhesive, the bottom of the inner wall of the sealed shell is fixedly connected with a circuit board, the top of the circuit board is attached to the bottom of the thermal conductive adhesive, the top of the sealed shell is fixedly connected with multiple groups of heat sinks, the top of the sealed shell is fixedly connected with a fan, and multiple groups of heat sinks are distributed around the fan. The heat conductive adhesive is used to transfer the heat on the circuit board to the sealed shell, and then the contact area between the sealed shell and the air is increased through the heat sink, and then the fan is used to blow the airflow through the surface of the heat sink, so as to take away the heat on the sealed shell, while ensuring the sealing performance and improving the heat dissipation effect.

[0006] Preferably, the side wall of the sealed shell is connected with two groups of connecting pipes, the inner wall of the connecting pipe is fixedly provided with a sealing rubber sleeve, and the inner fixed sleeve of the sealing rubber sleeve is provided with multiple groups of wires, so that the part where the wires pass through the inside of the sealed shell has sufficient sealing, preventing water from flowing into the inside of the sealed shell from the gap between the sealed shell and the wires, thereby ensuring the waterproofness of the inverter.

[0007] Preferably, the shock absorbing mechanism comprises a plurality of guide rods, each of which is slidably sleeved with a group of sliders on the outer wall of each group of guide rods, and each of which is hinged with a group of top rods on the top end. When the sealing shell is vibrated, the vertical force is converted into a lateral force, so that while ensuring sufficient shock absorbing stroke, the height of the equipment will not be too high, thereby reducing the space occupied.

[0008] Preferably, the top end of each group of the push rods is hinged with a connecting block, and multiple groups of the connecting blocks are fixedly connected to the side wall of the sealing shell, so that the push rods and the sealing shell can be firmly connected together, which is convenient for transmitting force during the shock absorption process.

[0009] Preferably, a damper is fixedly connected between the two groups of sliders on the same side. The damper dissipates the vibration energy, thereby preventing the inverter from being damaged due to strong vibration and preventing the shock-absorbing spring from constantly rebounding.

[0010] Preferably, the outer wall of each group of guide rods is respectively sleeved with a group of shock absorbing springs, one end of which is fixedly connected to the outer wall of the guide rod, and the other end of which is fixedly connected to the side wall of the slider. The elasticity of the shock absorbing springs is utilized to provide soft support for the sealing shell, thereby preventing the frequency converter from being directly subjected to the impact force of vibration.

[0011] The beneficial effects of the utility model are:

[0012] The utility model transfers the heat on the circuit board to the sealing shell by using thermal conductive adhesive, and then increases the contact area between the sealing shell and the air by using the heat sink, and then uses the fan to blow the airflow through the surface of the heat sink, so as to take away the heat on the sealing shell. During the operation of the inverter, the electronic components inside the inverter are protected by the sealing shell to prevent the electronic components from getting damp, and at the same time, the heat generated by the inverter can be more efficiently diffused into the air, thereby improving the heat dissipation efficiency of the inverter.

[0013] The utility model compresses the shock-absorbing spring and the damper through the slider, so that when the frequency converter is vibrated, the vibration can be buffered, thereby avoiding damage to internal electronic components of the frequency converter due to strong vibration, prolonging the service life of the frequency converter and reducing the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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 work.

[0015] Figure 1 A schematic structural diagram of a waterproof frequency converter provided in an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the main structure of the shock absorbing mechanism.

[0017] Figure 3 Schematic diagram of the explosion structure inside the shell.

[0018] Figure 4 It is a schematic diagram of the side structure.

[0019] Explanation of the reference numerals: 1-base, 2-shock absorbing mechanism, 201-guide rod, 202-slider, 203-top rod, 204-connecting block, 205-damper, 206-shock absorbing spring, 3-sealed heat dissipation mechanism, 301-sealed shell, 302-thermal conductive adhesive, 303-circuit board, 304-heat sink, 305-fan, 306-connecting pipe, 307-sealing rubber sleeve, 308-wire. DETAILED DESCRIPTION

[0020] 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 in 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. Example

[0021] like Figures 1 to 4As shown, this embodiment provides a waterproof inverter, including: a base 1, a shock absorbing mechanism 2 is fixedly connected to the top of the base 1, and a sealed heat dissipation mechanism 3 is fixedly connected to the top of the shock absorbing mechanism 2; the sealed heat dissipation mechanism 3 includes a sealed shell 301, a thermal conductive adhesive 302 is fixedly connected to the top of the inner wall of the sealed shell 301, a circuit board 303 is fixedly connected to the bottom of the inner wall of the sealed shell 301, and the top of the circuit board 303 is attached to the bottom of the thermal conductive adhesive 302, a plurality of groups of heat sinks 304 are fixedly connected to the top of the sealed shell 301, a fan 305 is fixedly connected to the top of the sealed shell 301, and the plurality of groups of heat sinks 304 are distributed around the fan 305, and the side walls of the sealed shell 301 are connected with two groups of connecting pipes 306, the inner wall fixed sleeve of the connecting pipe 306 is provided with a sealing rubber sleeve 307, and the inner fixed sleeve of the sealing rubber sleeve 307 is provided with a plurality of groups of wires 308.

[0022] Principle of this embodiment: The circuit board 303 is wrapped by the sealing shell 301 so that moisture cannot contact the circuit board 303, and the wire 308 is wrapped by the sealing rubber sleeve 307, and a connecting pipe 306 is fixedly sleeved on the outside of the sealing rubber sleeve 307, and the connecting pipe 306 is fixedly connected to the sealing shell 301 by welding, so that water will not enter the position where the wire 308 passes through the inside of the sealing shell 301, thereby improving the sealing of the inverter, and the heat on the circuit board 303 is transferred to the sealing shell 301 through the thermal conductive glue 302, and then the fan 305 is used to suck air from the center of the fan 305, and then expel it from the surroundings of the fan blades, so that the air passes between the multiple groups of heat sinks 304, thereby dissipating the heat on the sealing shell 301. Example

[0023] like Figure 2 and Figure 4 As shown, on the basis of retaining all the technical features in the specific embodiment 1 (or the difference between this embodiment and the specific embodiment 1 is that), in this embodiment: the shock absorbing mechanism 2 includes a plurality of groups of guide rods 201, and the outer wall of each group of guide rods 201 is slidably sleeved with a group of sliders 202, and the top of each group of sliders 202 is hinged with a group of push rods 203, and the top of each group of push rods 203 is hinged with a connecting block 204, and the plurality of connecting blocks 204 are fixedly connected to the side wall of the sealing shell 301, and a damper 205 is fixedly connected between the two groups of sliders 202 on the same side, and the outer wall of each group of guide rods 201 is sleeved with a group of shock absorbing springs 206, one end of the shock absorbing spring 206 is fixedly connected to the outer wall of the guide rod 201, and the other end of the shock absorbing spring 206 is fixedly connected to the side wall of the slider 202.

[0024] Principle of this embodiment: When the frequency converter is vibrated, the sealing shell 301 moves downward, driving the connecting block 204 to move downward. The connecting block 204 pushes the slider 202 to slide on the outer wall of the guide rod 201 through the top rod 203, so that the slider 202 compresses the shock-absorbing spring 206. At the same time, the damper 205 is stretched by the two groups of sliders 202, thereby consuming the force of the vibration and preventing the shock-absorbing spring 206 from rebounding repeatedly, so that the frequency converter is not easily damaged when it is vibrated.

[0025] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A waterproof inverter, characterized in that: include: A base (1), the top of the base (1) being fixedly connected to a shock absorbing mechanism (2), and the top of the shock absorbing mechanism (2) being fixedly connected to a sealing heat dissipation mechanism (3); The sealed heat dissipation mechanism (3) comprises a sealed shell (301), the top end of the inner wall of the sealed shell (301) is fixedly connected to a heat-conducting adhesive (302), the bottom end of the inner wall of the sealed shell (301) is fixedly connected to a circuit board (303), the top end of the circuit board (303) is attached to the bottom end of the heat-conducting adhesive (302), the top end of the sealed shell (301) is fixedly connected to a plurality of groups of heat sinks (304), the top end of the sealed shell (301) is fixedly connected to a fan (305), and the plurality of groups of heat sinks (304) are distributed around the fan (305); The side wall of the sealing shell (301) is connected to two groups of connecting pipes (306), the inner wall fixed sleeve of the connecting pipe (306) is provided with a sealing rubber sleeve (307), and the inner fixed sleeve of the sealing rubber sleeve (307) is provided with multiple groups of wires (308).

2. A waterproof inverter as claimed in claim 1, characterized in that: The shock absorbing mechanism (2) comprises a plurality of groups of guide rods (201), the outer wall of each group of guide rods (201) being slidably sleeved with a group of sliders (202), and the top end of each group of sliders (202) being hingedly connected with a group of push rods (203).

3. A waterproof inverter as claimed in claim 2, characterized in that: The top end of each group of push rods (203) is hingedly connected to a connection block (204), and multiple groups of connection blocks (204) are fixedly connected to the side wall of the sealing shell (301).

4. A waterproof inverter as claimed in claim 2, characterized in that: A damper (205) is fixedly connected between the two groups of sliding blocks (202) on the same side.

5. A waterproof inverter as claimed in claim 2, characterized in that: A group of shock absorbing springs (206) are sleeved on the outer wall of each group of guide rods (201), one end of the shock absorbing spring (206) is fixedly connected to the outer wall of the guide rod (201), and the other end of the shock absorbing spring (206) is fixedly connected to the side wall of the slider (202).

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