CN213461551U

CN213461551U - Fire and explosion protection type converter

Info

Publication number: CN213461551U
Application number: CN202022722789.5U
Authority: CN
Inventors: 周浪生
Original assignee: Jiashan Yichuan Electronic Technology Co ltd
Current assignee: Jiashan Yichuan Electronic Technology Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-06-15
Anticipated expiration: 2030-11-23

Abstract

A fire-proof and explosion-proof frequency converter comprises a shell, an operating panel, a wiring terminal, a fan, a U-shaped groove and a heat dissipation plate. The shell comprises a body, a heat dissipation port and a wiring port. The U-shaped groove comprises a first U-shaped groove, a second U-shaped groove and a third U-shaped groove. The U-shaped groove is formed in the body, and the heat dissipation port is located in the U-shaped groove. And inserting the filter plate from the opening of the U-shaped groove to ensure that the filter plate is fixed in the U-shaped groove and covers the heat dissipation port. And the central point of filter puts and is provided with the filter screen, the filter screen is used for filtering air to make the thermovent has the protection, makes the converter whether use all can prevent the dust entering, and then prevents that the inside dust of converter from piling up and catching fire. And the mounting mode of the filter plate is simple, and the filter plate is convenient to replace and clean.

Description

Fire and explosion protection type converter

Technical Field

The utility model relates to a converter technical field, in particular to fire and explosion protection type converter.

Background

The frequency converter is an electric control device which applies a frequency conversion technology and a microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor. The frequency converter mainly comprises a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit, a detecting unit micro-processing unit and the like. The frequency converter adjusts the voltage and the frequency of an output power supply by switching on and off the internal IGBT, provides the required power supply voltage according to the actual requirement of the motor, and further achieves the purposes of energy conservation and speed regulation.

However, the frequency converter sometimes has a fire or even an explosion phenomenon, and the main reason for the fire of the frequency converter is that heat inside the frequency converter is accumulated and cannot be discharged in time, so that the fire is caused. The reason why the heat cannot be timely discharged is that dust in the air enters the inside of the frequency converter through the heat dissipation holes when the frequency converter is not used or the dust in the air is blown by the fan when the frequency converter is used, so that the dust is attached to electronic components in the frequency converter, and the heat dissipation performance of the frequency converter is poor, so that the heat of the frequency converter cannot be timely discharged. A plurality of heat dissipation holes of a frequency converter in the prior art are directly arranged on the frequency converter in a through hole mode, and no protective measures are taken, so that dust can easily enter the frequency converter. In addition, when dust meets humid air, the dust can become a conductor to cause short circuit of a capacitor in the frequency converter, the capacitor can explode under the high-temperature and high-pressure state, and the explosion can cause new short circuit or short circuit in the frequency converter, so that chain reaction is caused, and the safety of personnel is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a fire prevention explosion-proof type converter to solve above-mentioned technical problem.

A fire-proof and explosion-proof frequency converter comprises a shell, two U-shaped grooves formed in the shell respectively, and two filter plates arranged on the U-shaped grooves respectively. The shell comprises a body and two heat dissipation ports which are oppositely arranged at two ends of the body. The centers of the two radiating holes are on the same straight line, and the radiating holes are located in the U-shaped groove. The U-shaped groove comprises a first U-shaped groove horizontally arranged on the body, a second U-shaped groove arranged at one end of the first U-shaped groove, and a third U-shaped groove arranged at the other end of the first U-shaped groove. The first U-shaped groove is located between the heat dissipation opening and the bottom of the body, the second U-shaped groove and the third U-shaped groove are located on two sides of the heat dissipation opening respectively, planes of the second U-shaped groove and the third U-shaped groove are parallel to each other, the plane of the first U-shaped groove is perpendicular to the planes of the second U-shaped groove and the third U-shaped groove respectively, openings of the first U-shaped groove, the second U-shaped groove and the third U-shaped groove face to a central shaft of the heat dissipation opening, the filter plate comprises a frame body inserted in the U-shaped groove, and a filter screen arranged in the center of the frame body and covering the heat dissipation opening.

Furthermore, the fire-proof and explosion-proof frequency converter also comprises an operation panel arranged on the shell, a fan arranged on the heat dissipation port and a plurality of wiring terminals arranged on the shell.

Further, the housing further comprises a wire connection port arranged on one side edge of the body.

Further, the fan is arranged on one of the heat dissipation openings, and the output direction of the fan faces to the other heat dissipation opening.

Further, the inner cavity of the body is arranged.

Furthermore, the thickness of the frame body is equal to the size of the openings of the first U-shaped groove, the second U-shaped groove and the third U-shaped groove.

Compared with the prior art, the utility model provides a fire and explosion protection type converter is through set up on the shell U type groove with the filter, specifically, the shell includes a body to and two relative settings are in thermovent on the body both ends. The U-shaped groove is formed in the body, and the heat dissipation port is located in the U-shaped groove. And inserting the filter plate from the opening of the U-shaped groove, so that the filter plate is fixed in the U-shaped groove and covers the heat dissipation port. And the central point of filter puts and is provided with the filter screen, the filter screen is used for filtering air to make the thermovent has the protection, makes the converter whether use all can effectively prevent the dust entering, and then prevents that the inside dust of converter from piling up and catching fire. And the mounting mode of the filter plate is simple, and the filter plate is convenient to replace and clean.

Drawings

Fig. 1 is the utility model provides a pair of fire prevention explosion-proof type converter's decomposition structure schematic diagram.

Fig. 2 is a schematic structural diagram of the fire and explosion protection type frequency converter of fig. 1.

Fig. 3 is a schematic structural diagram of another angle of the fire and explosion protection type frequency converter of fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 3, it is a schematic structural diagram of the fire and explosion protection type frequency converter provided by the present invention. The fire-proof and explosion-proof frequency converter comprises a shell 10, an operation panel 20 arranged on the shell 10, a plurality of wiring terminals 30 arranged on the shell 10, a fan 40 arranged on the shell 10, two U-shaped grooves 50 respectively arranged on the shell 10, and two filter plates 60 respectively arranged on the U-shaped grooves 50. It is understood that the fire and explosion protection type frequency converter further includes other functional modules, such as assembly components, heat dissipation plates, and circuit boards, etc., which are well known to those skilled in the art and will not be described herein again.

The housing 10 includes a body 11, two heat dissipating ports 12 oppositely disposed at both ends of the body 11, and a wiring port 13 disposed at the body 11. The inner cavity of the body 11 is arranged, and the body 11 is used for arranging the functional components, namely the heat dissipation port 12, the wiring port 13, the wiring terminal 30, the fan 40 and the U-shaped groove 50. The body 11 is a cube structure, and the shape of the body 11 can be set according to actual needs. The two heat dissipation ports 12 are respectively and oppositely arranged at two ends of the body 11, one of the heat dissipation ports 12 is used for arranging the fan 40, the other heat dissipation port 12 is used for discharging heat inside the shell 10, and the heat dissipation port 12 is located in the U-shaped groove 50. The centers of the two heat-radiating ports 12 are aligned so as to facilitate the heat discharge by the fan 40. The wiring port 13 is formed in one side edge of the body 11, and the wiring port 13 is used for arranging the wiring terminal 30.

The operation board 20 is disposed on the top of the body 11 and electrically connected to a circuit board (not shown) inside the frequency converter, and the operation board 20 is used for controlling the frequency converter and modifying parameters, which is the prior art and is not described herein again.

The plurality of wiring terminals 30 are disposed in the wiring port 13, and the wiring terminals 30 are used for connecting input and output wires of the frequency converter, which is the prior art and is not described herein again.

The fan 40 is disposed on one of the heat dissipation ports 12, and the output direction of the fan 40 faces the other heat dissipation port 12, so that cold air is continuously blown into the one heat dissipation port 12 of the housing 10 by the fan 40, exchanges heat with a circuit board inside the frequency converter, and is discharged from the other heat dissipation port 12, thereby achieving heat dissipation.

The two U-shaped grooves 50 are respectively disposed on the two heat dissipating ports 12 of the housing 10, and are used for disposing the filter plate 60. The two U-shaped grooves 50 have the same composition, structure, and operation principle, and only one U-shaped groove 50 is taken as an example for illustration. The U-shaped groove 50 includes a first U-shaped groove 51 horizontally disposed on the body 11, a second U-shaped groove 52 disposed at one end of the first U-shaped groove 51, and a third U-shaped groove 53 disposed at the other end of the first U-shaped groove 51. The two ends of the first U-shaped groove 51 are respectively connected with the second and third U-shaped

grooves

52, 53, and the first U-shaped groove 51 is located between the heat dissipation opening 12 and the bottom of the body 11. The second U-shaped groove 52 and the third U-shaped groove 53 are respectively located on two sides of the heat dissipation opening 12, planes of the second U-shaped groove 52 and the third U-shaped groove 53 are parallel to each other, and a plane of the first U-shaped groove 51 is perpendicular to planes of the second U-shaped groove 52 and the third U-shaped groove 53, so that the first U-shaped groove 51, the second U-shaped groove 52 and the third U-shaped groove 53 form the U-shaped groove 50 which is in a U-shaped structure and has an upward opening. The openings of the first, second and

third U-shaped grooves

51, 52 and 53 face the central axis of the heat dissipation opening 12, so that the filter plate 60 can be inserted and fixed in the U-shaped groove 50.

The filter plate 60 includes a frame body 61 inserted in the U-shaped groove 50, and a filter screen 62 disposed in the frame body 61. The thickness of the frame body 61 is equal to the size of the openings of the first, second and

third U-shaped grooves

51, 52 and 53, so that the frame body 61 can be inserted into the U-shaped groove 50, and the filter plate 60 can be directly pulled out for cleaning or directly replaced when cleaning is needed, thereby facilitating disassembly and assembly. The filter screen 62 is disposed at the center of the frame 61 and covers the heat dissipation opening 12, and the filter screen 62 is used for filtering air and preventing dust in the air from entering the housing 10, so that the dust can be effectively prevented from entering no matter whether the frequency converter is used or not.

Compared with the prior art, the utility model provides a fire and explosion protection type converter is through set up on the shell 10U type groove 50 with filter 60, specifically, shell 10 includes a body 11 to and two relative settings are in thermovent 12 on the body 11 both ends. The U-shaped groove 50 is arranged on the body 11, and the heat dissipation port 12 is located in the U-shaped groove 50. The filter plate 60 is inserted into the opening of the U-shaped groove 50, so that the filter plate 60 is fixed in the U-shaped groove 50 and covers the heat dissipation opening 12. The filter screen 62 is disposed at the center of the filter plate 60, and the filter screen 62 is used for filtering air, so that the heat dissipation opening 12 is protected, dust can be effectively prevented from entering the frequency converter no matter whether the frequency converter is used, and the dust inside the frequency converter is prevented from accumulating and catching fire. And the installation manner of the filter plate 60 is simple, which facilitates the replacement and cleaning of the filter plate 60.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. The utility model provides a fire prevention explosion-proof type converter which characterized in that: the fireproof and explosion-proof frequency converter comprises a shell, two U-shaped grooves which are respectively arranged on the shell, and two filter plates which are respectively arranged on the U-shaped grooves, wherein the shell comprises a body, two heat dissipation ports which are oppositely arranged at two ends of the body, the centers of the two heat dissipation ports are positioned on a straight line, the heat dissipation ports are positioned in the U-shaped grooves, the U-shaped grooves comprise a first U-shaped groove which is horizontally arranged on the body, a second U-shaped groove which is arranged at one end of the first U-shaped groove, and a third U-shaped groove which is arranged at the other end of the first U-shaped groove, the first U-shaped groove is positioned between the heat dissipation ports and the bottom of the body, the second U-shaped groove and the third U-shaped groove are respectively positioned at two sides of the heat dissipation ports, the planes of the second U-shaped groove and the third U-shaped groove are parallel to each other, and the plane of the first U-, The plane of the third U-shaped groove is vertical to each other, the openings of the first U-shaped groove, the second U-shaped groove and the third U-shaped groove face to the central shaft of the heat dissipation opening, and the filter plate comprises a frame body inserted in the U-shaped groove and a filter screen arranged at the central position of the frame body and covering the heat dissipation opening.

2. A fire and explosion protection type frequency converter according to claim 1, wherein: the fire-proof and explosion-proof frequency converter further comprises an operation panel arranged on the shell, a fan arranged on the heat dissipation port and a plurality of wiring terminals arranged on the shell.

3. A fire and explosion protection type frequency converter according to claim 1, wherein: the housing further includes a wire port disposed on one side of the body.

4. A fire and explosion protection type frequency converter according to claim 2, wherein: the fan is arranged on one of the heat dissipation openings, and the output direction of the fan faces to the other heat dissipation opening.

5. A fire and explosion protection type frequency converter according to claim 1, wherein: the cavity in the body is arranged.

6. A fire and explosion protection type frequency converter according to claim 1, wherein: the thickness of the frame body is equal to the size of the openings of the first U-shaped groove, the second U-shaped groove and the third U-shaped groove.