Frequency converter protection device

Abstract

The utility model discloses a frequency converter protection device, which belongs to the technical field of frequency converters and comprises a protection box, a frequency converter body is arranged in the protection box, a box door is arranged on one side of the protection box, and the box door is rotatably mounted on the side wall of the protection box through a hinge; the device further comprises a heat dissipation assembly, the heat dissipation assembly comprises a draught fan, and the draught fan is installed above the other side of the protection box. Through the arrangement of the protection box, the frequency converter is simple in structure, convenient and practical, the frequency converter body can be isolated from the external environment, the influence of water and dust in the environment on the frequency converter body is reduced, the service life of the frequency converter body is prolonged, vibration conducted to the frequency converter body can be reduced in cooperation with vibration buffering feet and rubber pads, and the service life of the frequency converter body is prolonged. And a fan, a grid air inlet and a dust filtering net are arranged to be matched for use, so that heat dissipation of the frequency converter body is accelerated, and meanwhile, dust entering the protection box is further reduced.

Description

Technical Field

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

[0002] The frequency converter 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 frequency converter can flexibly change the motor's speed according to actual needs and achieve precise speed control to meet the requirements of different working conditions. It can also significantly reduce energy consumption in some cases by optimizing the motor's operating state. After the fan and pump loads are regulated by the frequency converter, the power saving rate is 20% to 60%. The frequency converter also helps to improve the stability of the production process and product quality.

[0003] After searching, in the prior art, Chinese patent publication number: CN220711896U discloses a frequency converter protection device, which includes a frequency converter body, a display screen fixedly installed on the front surface of the frequency converter body, a positioning groove is opened on one side of the frequency converter body, a cooling mechanism is fixedly installed in the positioning groove, a semiconductor cooling plate is fixedly installed in the positioning groove, and the cold end of the semiconductor cooling plate faces the inner side of the frequency converter body, a first heat-conducting fin is fixedly installed on the semiconductor cooling plate on the inner side of the frequency converter body, a second heat-conducting fin is fixedly installed on the semiconductor cooling plate on the outer side of the frequency converter body, and a gas component is provided at the cooling mechanism. After starting the fan on the first positioning frame, the gas in the frequency converter body will flow through the first heat-conducting fin to reduce the gas temperature, thereby dissipating heat for the components in the frequency converter body. During the heat dissipation process, the gas in the frequency converter does not contact the outside world, which can prevent water vapor from entering the frequency converter body, thereby protecting the frequency converter.

[0004] But this device still has the following defects:

[0005] When the inverter is used in conjunction with fans, pumps, etc., the working environment is relatively harsh, and water, dust, and vibrations generated by the operation of the machine will affect the service life of the inverter. The device has a single function and can only reduce the harm of water vapor to the inverter body. The device does not solve this problem well. Utility Model Content

[0006] The purpose of the utility model is to provide a frequency converter protection device. By setting up a protective box, the frequency converter body can be isolated from the external environment, reducing the impact of water and dust in the environment on the frequency converter body, and improving the service life of the frequency converter body. When used in conjunction with vibration-absorbing feet and rubber pads, the vibration transmission to the frequency converter body can be reduced, further improving the service life of the frequency converter, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A frequency converter protection device comprises a protection box, wherein a frequency converter body is arranged inside the protection box, a box door is arranged on one side of the protection box, and the box door is rotatably mounted on the side wall of the protection box through a hinge;

[0009] It also includes a heat dissipation component, which includes a fan, which is installed above the other side of the protection box, and the air inlet end of the fan faces the inside of the protection box.

[0010] It also includes a vibration damping assembly, which includes four sets of vibration damping feet, and the vibration damping feet are fixedly installed around the bottom of the protection box;

[0011] It also includes a fixing assembly, which includes two sets of clamping plates, one side of the clamping plate is rotatably matched with one end of the threaded rod, the threaded rod is threadedly matched with the side wall of the protection box, and a rotating handle is fixed to the other end of the threaded rod.

[0012] Preferably, a rubber pad is provided inside the protection box, and the rubber pad is bonded to the bottom of the protection box by glue.

[0013] Preferably, a baffle is fixed to the other side of the protective box by screws, a channel for the connection line to pass through is fixedly installed at the bottom of the baffle, the opening of the channel faces downward, and a dust brush is fixedly installed at the opening of the channel.

[0014] Preferably, an observation window is provided above the box door, and a transparent plate is sealed and bonded to the inner wall of the observation window.

[0015] Preferably, a grille air inlet is fixedly installed below the box door, and a dust filter is fixedly installed on one side of the grille air inlet.

[0016] Preferably, a first clamping block is fixedly installed on one side of the box door, and a second clamping block is fixedly installed on one side of the protection box, and the box door is sealed and clamped with the protection box through the first clamping block and the second clamping block.

[0017] Preferably, a protective cover is provided above the fan, and the protective cover is fixedly installed above the other side of the protective box.

[0018] Preferably, the vibration-absorbing foot comprises a movable column, and a base plate is fixedly mounted on the bottom of the movable column.

[0019] Preferably, a limit plate is fixedly mounted on the top of the movable column, the limit plate is slidably mounted inside the top seat, and a limit ring used in conjunction with the limit plate is integrally formed on the bottom of the top seat.

[0020] Preferably, a spring is provided inside the top seat, the top of the spring is fixedly connected to the inner wall of the top seat, the bottom of the spring abuts against the limit plate, and the top seat is fixedly installed around the bottom of the protective box.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The utility model sets up a protective box with a simple structure, which is convenient and practical. The inverter body can be isolated from the external environment, the influence of water and dust in the environment on the inverter body can be reduced, and the service life of the inverter body can be prolonged. When used with vibration-absorbing feet and rubber pads, the vibration transmission to the inverter body can be reduced, and the service life of the inverter can be further prolonged. The fan, grille air inlet and dust filter can be used together to accelerate the heat dissipation of the inverter body and further reduce the dust entering the protective box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the protection box;

[0025] Figure 3 This is a schematic diagram of the back structure of the utility model;

[0026] Figure 4 It is a schematic diagram of the cross-section structure of the vibration-absorbing foot.

[0027] In the figure: 1. protective box; 2. inverter body; 3. box door; 4. hinge; 5. fan; 6. vibration damping foot; 601. movable column; 602. bottom plate; 603. limit plate; 604. top seat; 605. limit ring; 606. spring; 7. clamping plate; 8. threaded rod; 9. turning handle; 10. rubber pad; 11. baffle; 12. channel; 13. dust brush; 14. observation window; 15. grille air inlet; 16. dust filter; 17. first clamping block; 18. second clamping block; 19. protective cover. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figures 1 to 4 , the utility model provides a technical solution:

[0030] A frequency converter protection device comprises a protection box 1, a frequency converter body 2 is arranged inside the protection box 1, a box door 3 is arranged on one side of the protection box 1, and the box door 3 is rotatably mounted on the side wall of the protection box 1 through a hinge 4. By arranging the protection box 1, the frequency converter body 2 can be isolated from the external environment, reducing the influence of water and dust in the environment on the frequency converter body 2, and improving the service life of the frequency converter body 2. By arranging the box door 3, it is convenient for operators to disassemble and operate the frequency converter body 2;

[0031] An observation window 14 is provided above the box door 3, and a transparent plate is sealed and bonded to the inner wall of the observation window 14. The observation window 14 is provided to facilitate the operator to observe the working condition of the inverter body 2, and the transparent plate is provided to improve the sealing of the interior of the protective box 1;

[0032] Observation window material selection: The transparent plate should be made of high temperature resistant, impact resistant, and highly transparent materials, such as tempered glass or high-strength organic glass (such as polycarbonate PC), to ensure good visibility and structural stability under the high temperature and possible vibration environment generated when the inverter body 2 is working.

[0033] Sealing structure design: When the inner wall of the observation window 14 is sealed and bonded to the transparent plate, double-sided high-temperature resistant sealing strips or silicone sealants can be used to ensure seamless fit between the two, preventing external factors such as dust and moisture from invading the interior of the protective box 1, affecting the normal operation of the inverter and extending the life of the equipment. The selection of sealants must take into account their stability in a long-term high-temperature environment to avoid sealing failure caused by aging.

[0034] Installation and fixing method: The observation window 14 should be designed with a stable installation frame, made of stainless steel or other anti-corrosion materials, and fixed to the box door 3 by bolts or quick-release buckles, etc., to ensure that it can maintain a stable position even under frequent opening and closing or external force, and will not loosen or fall off.

[0035] A first clamping block 17 is fixedly installed on one side of the box door 3, and a second clamping block 18 is fixedly installed on one side of the protective box 1. The box door 3 is sealed and clamped with the protective box 1 through the first clamping block 17 and the second clamping block 18. By setting the first clamping block 17 and the second clamping block 18 for use together, the box door 3 and the protective box 1 can be sealed and clamped, thereby preventing water and dust from entering the interior of the protective box 1 from the connection between the box door 3 and the protective box 1, thereby reducing the influence of water and dust on the inverter body 2.

[0036] It also includes a heat dissipation component, which includes a fan 5. The fan 5 is installed above the other side of the protection box 1. The air inlet end of the fan 5 faces the inside of the protection box 1. By setting the fan 5, the air in the protection box 1 can be quickly drawn out, thereby accelerating the heat dissipation of the inverter body 2, ensuring the normal operation of the inverter body 2, and at the same time increasing the service life of the inverter body 2;

[0037] A protective cover 19 is provided above the fan 5. The protective cover 19 is fixedly installed above the other side of the protection box 1. By providing the protective cover 19, the fan 5 can be protected and the possibility of water entering the protection box 1 from the installation position of the fan 5 can be reduced.

[0038] A grille air inlet 15 is fixedly installed below the box door 3, and a dust filter 16 is fixedly installed on one side of the grille air inlet 15. By setting the grille air inlet 15, air convection can be formed inside the protective box 1 when the fan 5 is working, thereby further improving the heat dissipation effect on the inverter body 2. By setting the dust filter 16, dust can be reduced from entering the protective box 1, further reducing the impact of dust on the inverter body 2.

[0039] It also includes a vibration damping component, which includes four groups of vibration damping feet 6, which are fixedly installed around the bottom of the protection box 1. A rubber pad 10 is arranged inside the protection box 1, and the rubber pad 10 is glued to the bottom of the protection box 1. By arranging the vibration damping feet 6, the vibration transmitted from the ground to the protection box 1 can be reduced, thereby reducing the impact of the vibration on the protection box 1. In addition, when used in conjunction with the rubber pad 10, the vibration can be reduced from the protection box 1 to the inverter body 2, thereby reducing the damage caused by the vibration to the inverter body 2, and further improving the service life of the inverter body 2;

[0040] The vibration damping foot 6 includes a movable column 601, a bottom plate 602 is fixedly installed at the bottom of the movable column 601, a limit plate 603 is fixedly installed at the top of the movable column 601, the limit plate 603 is slidably installed inside the top seat 604, a limit ring 605 used in conjunction with the limit plate 603 is integrally formed at the bottom of the top seat 604, a spring 606 is arranged inside the top seat 604, the top of the spring 606 is fixedly connected to the inner wall of the top seat 604, and the bottom of the spring 606 abuts against the limit plate 603;

[0041] The top seat 604 is fixedly installed around the bottom of the protective box 1. By arranging a spring 606 to cooperate with the movable column 601 to slide in the top seat 604, the protective box 1 can be avoided from being directly affected when vibration is received, and when the movable column 601 moves upward due to vibration, the spring 606 will be compressed, thereby reducing the vibration amplitude of the top seat 604, and then reducing the vibration amplitude of the protective box 1.

[0042] It also includes a fixing assembly, which includes two sets of abutting plates 7, one side of the abutting plates 7 is rotatably matched with one end of a threaded rod 8, the threaded rod 8 is threadably matched with the side wall of the protection box 1, and a rotating handle 9 is fixed to the other end of the threaded rod 8. By setting the rotating handle 9 to drive the threaded rod 8 to rotate, the abutting plates 7 can be pushed inward to press against the inverter body 2. The two sets of abutting plates 7 press against the inverter body 2 at the same time to fix it, thereby improving the stability of the inverter body 2 and preventing the inverter body 2 from colliding with the inner wall of the protection box 1;

[0043] A baffle 11 is fixed to the other side of the protective box 1 by screws, and a channel 12 for the connection line to pass through is fixedly installed at the bottom of the baffle 11. The opening of the channel 12 faces downward, and a dust-proof brush 13 is fixedly installed at the opening of the channel 12. By setting the baffle 11, it is convenient for the operator to open the back of the protective box 1, so as to facilitate the connection of the connection line with the inverter body 2. By setting the channel 12, a position for the connection line to enter and exit can be provided, and the opening of the channel 12 is downward to prevent water drops from falling into the channel 12. By setting the dust-proof brush 13, it is ensured that the connection line can pass through the channel 12 normally, while reducing the dust from entering the protective box 1 through the channel 12.

[0044] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A frequency converter protection device, characterized in that: The invention comprises a protection box (1), wherein a frequency converter body (2) is arranged inside the protection box (1), a box door (3) is arranged on one side of the protection box (1), and the box door (3) is rotatably mounted on the side wall of the protection box (1) via a hinge (4); It also includes a heat dissipation component, the heat dissipation component includes a fan (5), the fan (5) is installed above the other side of the protection box (1), and the air inlet end of the fan (5) faces the inside of the protection box (1) It also includes a vibration damping component, the vibration damping component includes four groups of vibration damping feet (6), and the vibration damping feet (6) are fixedly installed around the bottom of the protection box (1); It also includes a fixing assembly, which includes two sets of clamping plates (7), one side of the clamping plate (7) is rotatably matched with one end of a threaded rod (8), the threaded rod (8) is threadably matched with the side wall of the protective box (1), and the other end of the threaded rod (8) is fixed with a rotating handle (9).

2. The inverter protection device according to claim 1, characterized in that: A rubber pad (10) is arranged inside the protection box (1), and the rubber pad (10) is bonded to the bottom of the protection box (1) by glue.

3. The inverter protection device according to claim 1, characterized in that: A baffle (11) is fixed to the other side of the protective box (1) by screws, and a channel (12) is fixedly installed at the bottom of the baffle (11) for facilitating the passage of the connecting line, the opening of the channel (12) faces downward, and a dustproof brush (13) is fixedly installed at the opening of the channel (12).

4. The inverter protection device according to claim 1, characterized in that: An observation window (14) is provided above the box door (3), and a transparent plate is sealed and bonded to the inner wall of the observation window (14).

5. A frequency converter protection device according to claim 4, characterized in that: A grille air inlet (15) is fixedly mounted below the box door (3), and a dust filter (16) is fixedly mounted on one side of the grille air inlet (15).

6. The inverter protection device according to claim 1, characterized in that: A first clamping block (17) is fixedly mounted on one side of the box door (3), a second clamping block (18) is fixedly mounted on one side of the protection box (1), and the box door (3) is sealed and clamped with the protection box (1) via the first clamping block (17) and the second clamping block (18).

7. The inverter protection device according to claim 1, characterized in that: A protective cover (19) is provided above the fan (5), and the protective cover (19) is fixedly mounted above the other side of the protective box (1).

8. The inverter protection device according to claim 1, characterized in that: The vibration-damping foot (6) comprises a movable column (601), and a bottom plate (602) is fixedly mounted on the bottom of the movable column (601).

9. A frequency converter protection device according to claim 8, characterized in that: A limit plate (603) is fixedly mounted on the top of the movable column (601), and the limit plate (603) is slidably mounted inside the top seat (604). A limit ring (605) is integrally formed at the bottom of the top seat (604) and is used in conjunction with the limit plate (603).

10. A frequency converter protection device according to claim 9, characterized in that: A spring (606) is arranged inside the top seat (604), the top of the spring (606) is fixedly connected to the inner wall of the top seat (604), the bottom of the spring (606) is in contact with the limiting plate (603), and the top seat (604) is fixedly installed around the bottom of the protective box (1).

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