CN220510969U

CN220510969U - Explosion-proof type frequency converter

Info

Publication number: CN220510969U
Application number: CN202322060088.3U
Authority: CN
Inventors: 何志勇; 徐晓萌
Original assignee: Jiangsu Maifu Precision Technology Co ltd
Current assignee: Jiangsu Maifu Precision Technology Co ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2024-02-20
Anticipated expiration: 2033-08-02

Abstract

The utility model discloses an explosion-proof frequency converter, which comprises a shell, wherein the front surface of the shell is provided with a control panel, components are arranged in the shell, first radiating holes are formed in two sides of the shell, a radiating fan is arranged at the first radiating holes, first protection plates capable of moving outwards simultaneously are arranged on the left side and the right side in the shell, and second protection plates capable of moving outwards simultaneously are arranged on the front side and the rear side of the shell; the shell is internally provided with a temperature sensor and a control module, the temperature sensor is electrically connected with the control module, and the control module is used for controlling the movement of the first protection plate and the second protection plate. If radiator fan damages and leads to the temperature to rise in the casing and reach the back that sets up the temperature, temperature sensor will signal transmission to control module, and control module drive first guard plate and second guard plate support and lean on the inner wall of casing, improve the intensity of casing on the one hand, damage when preventing the explosion, on the other hand can carry out the containment to components and parts, the piece that produces when preventing the explosion outwards splashes, reduces dangerous emergence.

Description

Explosion-proof type frequency converter

Technical Field

The utility model relates to the technical field of frequency converters, in particular to an explosion-proof frequency converter.

Background

The common frequency converter cannot be used in a dangerous area, because the frequency converter can generate a large amount of heat in the operation process, the main heating source of the frequency converter is a semiconductor element, the normal operating temperature range of the device is generally-5 to +65 ℃, and beyond the range, the performance of the element is obviously reduced, and the stable operation cannot be realized, so that the operation reliability of the system is affected. The explosion-proof structure of the explosion-proof frequency converter is particularly important.

The Chinese patent with the publication number of CN203466708U discloses an explosion-proof frequency converter, which is characterized in that a heat pipe radiator is arranged at the back of an explosion-proof box body, the characteristics of quick heat transfer, small temperature difference at two ends and the like of a heat pipe are utilized, the temperature in an explosion-proof cavity is led out of the cavity, and the heat dissipation of the cavity in the box body is realized through an external fan and a heat dissipation fin. The performance of the heat pipe radiator can be improved by more than 10 times compared with that of the solid radiator, and the external air cooling is realized by combining with an external fan, so that the cooling performance is higher, the heat pipe radiating efficiency is high, the temperature rise of the frequency converter power module is small, and the working stability and the reliability of the explosion-proof frequency converter are further improved.

Therefore, the explosion-proof frequency converter disclosed in the patent and the prior art only reduces the temperature in the box body by improving the heat dissipation efficiency, prevents explosion, does not increase the structural strength of the box body, cannot work normally if the heat dissipation part is damaged, causes the temperature in the box body to rise, exceeds the normal working range, has low structural strength, is extremely easy to damage due to explosion, and causes components in the box body to be dispersed everywhere, thereby increasing the danger.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an explosion-proof frequency converter to solve the problems in the background art.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides an explosion-proof type converter, includes the casing, the front of casing is equipped with control panel, is equipped with components and parts in the casing, and first louvre has been seted up to the both sides of casing, and first louvre department installs radiator fan, the upper portion of casing left and right sides wall rotates and is connected with first lead screw, and the lower part is fixed with first guide arm, and the screw thread of first lead screw both sides sets up in opposite directions, and the both sides threaded connection of first lead screw has first guard plate, the lower extreme and the first guide arm sliding connection of first guard plate, and the second louvre that corresponds with first louvre has been seted up at the center of first guard plate, and the outside of casing is equipped with first motor, and first motor passes through the shaft coupling and is connected with the one end transmission of first lead screw; the upper parts of the front side wall and the rear side wall of the shell are rotationally connected with a second screw rod, the lower part of the second screw rod is fixedly provided with a second guide rod, the second screw rod is positioned below the first screw rod, the second guide rod is positioned above the first guide rod, threads on two sides of the second screw rod are reversely arranged, two sides of the second screw rod are in threaded connection with a second protection plate, the lower end of the second protection plate is in sliding connection with the second guide rod, the second protection plate is positioned between the two first protection plates, the center of the second protection plate is provided with a through hole, a control panel passes through the through hole on the second protection plate through a wire and is electrically connected with components, the rear side of the shell is provided with a second motor, and the second motor is in transmission connection with one end of the second screw rod through a coupler; the shell is internally provided with a temperature sensor and a control module, the temperature sensor is electrically connected with the control module, and the first motor and the second motor are electrically connected with the control module.

Preferably, a filter screen is arranged on the first heat dissipation hole.

According to the technical scheme, the filter screen is arranged on the first radiating hole, so that dust can be prevented from entering the shell.

Preferably, the top and the bottom of the shell are provided with mounting lugs, and the mounting lugs are provided with mounting holes.

According to the technical scheme, the frequency converter can be fixed on external equipment through the mounting lugs.

Preferably, the top of the shell is provided with a third heat dissipation hole, the top of the shell is connected with a protective cover, the left side and the right side of the protective cover are provided with fourth heat dissipation holes, and a plurality of grid plates inclining downwards from inside to outside are arranged in the fourth heat dissipation holes; the left and right sides of protection casing are connected with downward baffle of slope, and the baffle is located the top of fourth louvre.

According to the technical scheme, the third radiating holes and the fourth radiating holes are formed in the top of the shell, after the radiating fan is damaged, the third radiating holes still have a radiating effect, so that the temperature in the shell cannot be obviously increased, the grid plates are arranged on the fourth radiating holes and incline downwards from inside to outside, rainwater can be prevented from flowing backwards into the shell, and the baffle is arranged to prevent the rainwater from falling on the grid plates and further prevent the rainwater from entering the shell.

Compared with the prior art, the utility model has the beneficial effects that:

carry out the efficient heat dissipation in to the casing through the radiator fan of casing both sides, if radiator fan damages and leads to the casing internal temperature to rise and reach the back that sets up the temperature, temperature sensor passes the signal to control module, control module starts first motor and second motor work, first motor drives first lead screw and rotates, first lead screw drives two first guard plates and outwards moves, until first guard plate supports the left and right sides that leans on the casing, the second motor drives the second lead screw and rotates, the second lead screw drives two second guard plates outwards moves, until the second guard plate supports the front and back both sides that leans on the casing, on the one hand improves the intensity of casing, damage when preventing the explosion, on the other hand can be to enclosing the components and parts, the piece that produces outwards splashes when preventing the explosion, reduce dangerous emergence.

Drawings

FIG. 1 is a schematic illustration of the present utility model;

FIG. 2 is a front cross-sectional view of the present utility model;

FIG. 3 is a side cross-sectional view of the present utility model;

FIG. 4 is a schematic view of a first fender;

FIG. 5 is a schematic view of a second shield;

in the figure: 1-shell, 2-control panel, 3-components, 4-radiator fan, 5-first lead screw, 6-first guide arm, 7-first guard plate, 8-second louvre, 9-first motor, 10-second lead screw, 11-second guide arm, 12-second guard plate, 13-through-hole, 14-second motor, 15-filter screen, 16-mounting ear, 17-third louvre, 18-protection casing, 19-grid board, 20-baffle.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1, an explosion-proof frequency converter includes a housing 1, a control panel 2 is disposed on the front side of the housing 1, components 3 are disposed in the housing 1, first heat dissipation holes are formed in two sides of the housing 1, a heat dissipation fan 4 is mounted at the first heat dissipation holes, a filter screen 15 is disposed on the first heat dissipation holes, heat is dissipated through the heat dissipation fan 4, and dust is prevented from entering the housing 1 through the filter screen 15. The top and the bottom of casing 1 all are equipped with mounting ear 16, have seted up the mounting hole on the mounting ear 16, can be with this converter convenient installation in required position through mounting ear 16.

As shown in fig. 2, the upper parts of the left and right side walls of the housing 1 are rotatably connected with a first screw rod 5, the lower part of the housing is fixedly provided with a first guide rod 6, threads on two sides of the first screw rod 5 are reversely arranged, threads on two sides of the first screw rod 5 are connected with a first protection plate 7, the lower end of the first protection plate 7 is slidably connected with the first guide rod 6, a second heat dissipation hole 8 (shown in fig. 4) corresponding to the first heat dissipation hole is formed in the center of the first protection plate 7, a first motor 9 is arranged on the outer side of the housing 1, and the first motor 9 is in transmission connection with one end of the first screw rod 5 through a coupling. The first motor 9 is started, the first motor 9 drives the first screw rod 5 to rotate, and the two first protection plates 7 can be driven to move outwards, so that the first protection plates 7 are propped against the left side wall and the right side wall of the shell 1, and the second heat dissipation holes 8 on the first protection plates 7 are aligned with the first heat dissipation holes on the shell 1, so that heat dissipation can be continued while explosion prevention is realized.

As shown in fig. 2 and 3, the upper parts of the front and rear side walls of the housing 1 are rotatably connected with a second screw rod 10, the lower part of the housing is fixedly provided with a second guide rod 11, the second screw rod 10 is located below the first screw rod 5, the second guide rod 11 is located above the first guide rod 6, threads on two sides of the second screw rod 10 are reversely arranged, two sides of the second screw rod 10 are in threaded connection with a second protection plate 12, the lower end of the second protection plate 12 is slidably connected with the second guide rod 11, the second protection plate 12 is located between the two first protection plates 7, so that the second protection plate 12 can move between the two first protection plates 7, a through hole 13 (as shown in fig. 5) is formed in the center of the second protection plate 12, the control panel 2 passes through the through hole 13 on the second protection plate and is electrically connected with the component 3 through a wire, a second motor 14 is arranged on the rear side of the housing 1, and the second motor 14 is in transmission connection with one end of the second screw rod 10 through a coupling. The second motor 14 is started, the second motor 14 drives the second screw rod 10 to rotate, and the two second protection plates 12 can be driven to move outwards, so that the second protection plates 12 are abutted against the front side wall and the rear side wall of the shell 1, and the wires between the control panel 2 and the components 3 are in the through holes 13, so that the wires can be prevented from being broken by the second protection plates.

Preferably, the first and second shielding plates 7 and 12 may be metal plates.

The shell 1 is internally provided with a temperature sensor and a control module, the temperature sensor is electrically connected with the control module, and the first motor 9 and the second motor 14 are electrically connected with the control module. The temperature sensor is used for sensing the temperature in the shell, and when the temperature is too high, signals are transmitted to the control module, and the first motor 10 and the second motor 14 are started to work through the control module.

The working principle of the embodiment is as follows:

the heat dissipation fan 4 on two sides of the shell 1 is used for carrying out high-efficiency heat dissipation in the shell, when the heat dissipation fan can work normally, the first protection plate 7 and the second protection plate 12 are kept at a certain distance from the inner wall of the shell 1, heat can be discharged from the first heat dissipation hole through gaps among the first protection plate 7, the second protection plate 12 and the shell 1, a heat dissipation effect is achieved, if the heat dissipation fan 4 is damaged, the temperature in the shell 1 rises and reaches the set temperature, a temperature sensor transmits a signal to the control module, the control module starts the first motor 10 and the second motor 14 to work, the first motor 9 drives the two first protection plates to abut against the left side and the right side of the shell, the second heat dissipation hole 8 is aligned with the first heat dissipation hole, the second motor 14 drives the two second protection plates 12 to abut against the front side and the rear side of the shell 1, the shell 1 is supported on one hand, the thickness of the shell is increased, the strength of the shell is improved, damage during explosion is prevented, on the other hand, the components 3 can be blocked during explosion can be prevented, fragments generated during explosion are prevented from splashing outwards, and dangerous occurrence is reduced.

Example 2

The top of casing 1 is equipped with third louvre 17, and the top of casing 1 is connected with protection casing 18, and the left and right sides of protection casing 18 is equipped with the fourth louvre, is equipped with a plurality of grid boards 19 that incline from inside to outside in the fourth louvre. The left and right sides of the protection cover 18 are connected with a baffle 20 which inclines downwards, and the baffle 20 is positioned above the fourth radiating holes.

Through setting up third louvre 10 and fourth louvre at the top of casing 1, can dispel the heat together with radiator fan, improve radiator fan, after radiator fan damages, third louvre 10 still can play the radiating effect, so that the temperature in the casing 1 can not obviously rise, through setting up grid 19 on fourth louvre, and grid 19 from inside to outside downward sloping, can prevent that the rainwater from flowing backwards in to casing 1, through setting up baffle 20, it falls on grid 19 to block the rainwater, further prevent the rainwater entering casing.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an explosion-proof type converter, its characterized in that, including casing (1), the front of casing (1) is equipped with control panel (2), is equipped with components and parts (3) in casing (1), and first louvre has been seted up to both sides of casing (1), and first louvre department installs radiator fan (4), the upper portion rotation of casing (1) left and right sides wall is connected with first lead screw (5), and the lower part is fixed with first guide arm (6), and the screw thread of first lead screw (5) both sides is reverse to be set up, and the both sides threaded connection of first lead screw (5) has first guard plate (7), and the lower extreme and the first guide arm (6) sliding connection of first guard plate (7), the second louvre (8) that correspond with first louvre have been seted up at the center of first guard plate (7), and the outside of casing (1) is equipped with first motor (9), and first motor (9) are through shaft coupling and one end transmission connection of first lead screw (5);

the upper parts of the front side wall and the rear side wall of the shell (1) are rotationally connected with a second screw rod (10), the lower parts of the second screw rod are fixedly provided with a second guide rod (11), the second screw rod (10) is positioned below the first screw rod (5), the second guide rod (11) is positioned above the first guide rod (6), threads on two sides of the second screw rod (10) are reversely arranged, two sides of the second screw rod (10) are in threaded connection with a second protection plate (12), the lower end of the second protection plate (12) is in sliding connection with the second guide rod (11), the second protection plate (12) is positioned between the two first protection plates (7), the center of the second protection plate (12) is provided with a through hole (13), the control panel (2) passes through the through hole (13) on the second protection plate and is electrically connected with a component (3) through a wire, the rear side of the shell (1) is provided with a second motor (14), and the second motor (14) is in transmission connection with one end of the second screw rod (10) through a coupling;

the temperature sensor and the control module are arranged in the shell (1), the temperature sensor is electrically connected with the control module, and the first motor (9) and the second motor (14) are electrically connected with the control module.

2. An explosion-proof frequency converter according to claim 1, wherein: a filter screen (15) is arranged on the first heat dissipation hole.

3. An explosion-proof frequency converter according to claim 2, wherein: the top and the bottom of the shell (1) are respectively provided with a mounting lug (16), and mounting holes are formed in the mounting lugs (16).

4. An explosion-proof frequency converter according to claim 1, wherein: the top of casing (1) is equipped with third louvre (17), and the top of casing (1) is connected with protection casing (18), and the left and right sides of protection casing (18) is equipped with fourth louvre, is equipped with a plurality of grid boards (19) of from inside to outside downward sloping in the fourth louvre.

5. The explosion-proof frequency converter of claim 4, wherein: the left side and the right side of the protective cover (18) are connected with downward-inclined baffles (20), and the baffles (20) are positioned above the fourth radiating holes.