CN216649508U

CN216649508U - Frequency converter with sealing structure

Info

Publication number: CN216649508U
Application number: CN202122833705.XU
Authority: CN
Inventors: 邓志阳; 宋慧超; 彭德明
Original assignee: Hubei Zhongxin Yilian Automation System Engineering Co ltd
Current assignee: Hubei Zhongxin Yilian Automation System Engineering Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-05-31
Anticipated expiration: 2031-11-18

Abstract

The utility model discloses a frequency converter with a sealing structure, which belongs to the technical field of frequency converters and comprises a frequency converter shell, wherein a frequency converter host is fixed at the bottom of an inner cavity of the frequency converter shell, a box door is hinged at the left side of the front surface of the frequency converter shell through a hinge, and a controller is fixed at the left side of the box door. The problem of traditional converter seal effect poor is solved.

Description

Frequency converter with sealing structure

Technical Field

The utility model relates to the technical field of frequency converters, in particular to a frequency converter with a sealing structure.

Background

The frequency converter is a power control device which applies frequency conversion technology and microelectronic technology and controls an alternating current motor by changing the working power supply frequency mode of the motor, and mainly comprises a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit, a detection unit micro-processing unit and the like, and the frequency converter adjusts the voltage and the frequency of an output power supply by switching on and off an internal IGBT (insulated gate bipolar translator), and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purposes of energy conservation and speed regulation.

The converter is important subassembly in the electric wire netting, the converter can regulate and control voltage, be a delicate equipment, in order to protect the converter, can overlap in the outside of host computer and be equipped with the box protection, because the converter is in the operation constantly, can produce a large amount of heats, need regularly discharge the heat, heat radiation structure needs to be opened, steam is in the exhaust, probably there is the dust entering box, the too big dust that also can make of gap between the switch door falls on electronic component simultaneously, arouse dust explosion easily under the environment of high temperature, cause the damage of converter.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a frequency converter with a sealing structure, which can be used for plugging gaps and holes of a box body of the frequency converter and preventing dust from entering the box body, so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a converter with seal structure, includes the converter shell, the bottom of converter shell inner chamber is fixed with the converter host computer, the positive left side of converter shell articulates through the hinge has the chamber door, the left side of chamber door is fixed with the controller, the inner chamber of converter shell transversely is fixed with the fixed plate, and the center department of fixed plate inlays and is equipped with the exhaust fan, the air outlet has been seted up at the top of converter shell, the top of converter shell inner chamber is fixed with fixed case, the round hole that the cooperation air outlet used is seted up at the top of fixed case, the ventilation hole has been seted up all around to fixed bottom of the case portion, the inner chamber of fixed case is provided with moving mechanism, the positive right side of converter shell is provided with fixture, the both sides of converter shell inner chamber all are provided with temperature sensor.

Preferably, moving mechanism includes the motor, the motor is fixed in the right side of fixed incasement chamber, the output shaft of motor is fixed with the screw rod, the left side of screw rod is passed through the bearing and is rotated in the inner chamber of fixed case, the surperficial threaded connection of screw rod has the swivel nut, the outside of swivel nut is fixed with first fly leaf, all there is the bracing piece all through sliding seat swing joint around the first fly leaf top, there is the second fly leaf one side through sliding seat swing joint in the one side that first fly leaf was kept away from to the bracing piece, the top of second fly leaf and the top sliding connection of fixed incasement chamber.

Preferably, fixture includes the activity ball, the activity ball inlays and locates the positive right side of converter shell, the front of activity ball is fixed with the lead screw, the front of lead screw is fixed with the disc, the surperficial threaded connection of lead screw has the thread bush, the outside of thread bush is fixed with the carousel, the recess that the cooperation lead screw used is seted up in the front of chamber door.

Preferably, a sealing ring is bonded on the right side of the box door, and a clamping groove matched with the sealing ring for use is formed in the front face of the shell of the frequency converter.

Preferably, the front on chamber door right side all is fixed with the reference column from last to down in proper order, the locating hole that the cooperation reference column used is seted up on the positive right side of converter shell.

Preferably, first chutes are formed in the front and the back of the inner cavity of the fixed box, the inner cavity of each first chute is connected with a first sliding block in a sliding manner, and one opposite side of each first sliding block penetrates through the corresponding first chute and is fixedly connected with the front and the back of the corresponding first movable plate.

Preferably, the front and the back of the top of the inner cavity of the fixed box are both provided with a second sliding groove, the inner cavity of the second sliding groove is connected with a second sliding block in a sliding manner, and the bottom of the second sliding block penetrates through the second sliding groove and is fixedly connected with the top of the second movable plate.

Preferably, the right side at fixed case inner chamber top is fixed with the limiting plate, the left side of limiting plate all is fixed with the spring in proper order from the past to the back, the left side of spring and the right side swing joint of second fly leaf.

Preferably, a protective cover is fixed to the top of the frequency converter shell, and the cross section of the protective cover is trapezoidal.

Preferably, a rubber pad is bonded to the back of the rotary table, and anti-skid grains are formed in the back of the rubber pad.

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

1. according to the utility model, through the arrangement of the motor, the screw rod, the threaded sleeve, the first movable plate, the support rod and the second movable plate, the second movable plate can be conveniently moved leftwards and rightwards, the circular hole and the air outlet can be blocked after heat dissipation and air exhaust are finished, dust in air is prevented from entering the inside of the frequency converter shell through the air outlet, and then the dust is covered on the surface of an electronic element of a frequency converter host, so that the frequency converter host is difficult to clean and easy to cause safety accidents.

2. According to the utility model, the temperature of the frequency converter host is conveniently monitored at any time through the arrangement of the temperature sensor, and then the exhaust fan is utilized to accelerate the heat discharge in the shell of the frequency converter, so that the frequency converter runs in a proper temperature environment, and the overhigh temperature of the frequency converter is avoided.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the housing of the frequency converter of the present invention;

FIG. 3 is a schematic view of the structure of the fixing box of the present invention;

FIG. 4 is a schematic side sectional view of the fixing box of the present invention;

FIG. 5 is an enlarged view of the area A in FIG. 1;

fig. 6 is a schematic perspective view of the turntable according to the present invention.

Reference numbers in the figures: 1. a frequency converter housing; 2. a frequency converter host; 3. a box door; 4. an exhaust fan; 5. an air outlet; 6. a fixed box; 7. a moving mechanism; 71. a motor; 72. a screw; 73. a threaded sleeve; 74. a first movable plate; 75. a support bar; 76. a second movable plate; 8. a clamping mechanism; 81. a movable ball; 82. a screw rod; 83. a disc; 84. a threaded sleeve; 85. a turntable; 86. a groove; 9. a circular hole; 10. a vent hole; 11. a temperature sensor; 12. a seal ring; 13. a card slot; 14. a positioning column; 15. a first chute; 16. a first slider; 17. a second chute; 18. a second slider; 19. a limiting plate; 20. a spring; 21. a protective cover; 22. and (7) a rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The utility model provides a frequency converter with a sealing structure as shown in figures 1-6, which comprises a frequency converter shell 1, wherein a frequency converter host 2 is fixed at the bottom of an inner cavity of the frequency converter shell 1, a box door 3 is hinged at the left side of the front surface of the frequency converter shell 1 through hinges, a controller is fixed at the left side of the box door 3, a fixing plate is transversely fixed in the inner cavity of the frequency converter shell 1, an exhaust fan 4 is embedded in the center of the fixing plate, an air outlet 5 is arranged at the top of the frequency converter shell 1, a fixing box 6 is fixed at the top of the inner cavity of the frequency converter shell 1, a round hole 9 matched with the air outlet 5 is arranged at the top of the fixing box 6, vent holes 10 are arranged at the periphery of the bottom of the fixing box 6, a moving mechanism 7 is arranged in the inner cavity of the fixing box 6, a clamping mechanism 8 is arranged at the right side of the front surface of the frequency converter shell 1, temperature sensors 11 are arranged at two sides of the inner cavity of the frequency converter shell 1, through moving mechanism 7's setting, the convenience is controlled the removal to second fly leaf 76, can carry out the shutoff to round hole 9 and air outlet 5 after the heat dissipation is aired exhaust, prevent that the dust in the air from passing through air outlet 5 and getting into the inside of converter shell 1, then cover the electronic component surface at converter host computer 2, not only be difficult to the clearance, and arouse the incident easily, setting through fixture 8, conveniently closely laminate chamber door 3 and converter shell 1, avoid having the production of gap between chamber door 3 and the converter shell 1, increase the leakproofness of converter shell 1, the problem that traditional converter sealed effect is poor has been solved.

The moving mechanism 7 comprises a motor 71, the motor 71 is fixed on the right side of the inner cavity of the fixed box 6, an output shaft of the motor 71 is fixed with a screw 72, the left side of the screw 72 rotates in the inner cavity of the fixed box 6 through a bearing, the surface of the screw 72 is in threaded connection with a threaded sleeve 73, the outer side of the threaded sleeve 73 is fixed with a first movable plate 74, the periphery of the top of the first movable plate 74 is movably connected with a support rod 75 through a movable seat, one side, away from the first movable plate 74, of the support rod 75 is movably connected with a second movable plate 76 through the movable seat, the top of the second movable plate 76 is in sliding connection with the top of the inner cavity of the fixed box 6, the air outlet 5 of the exhaust fan 4 is conveniently plugged, and dust is prevented from entering the frequency converter housing 1 from the air outlet 5 and covering the surface of the frequency converter host 2 when the exhaust fan 4 stops working.

Fixture 8 includes movable ball 81, movable ball 81 inlays and locates the positive right side of converter shell 1, movable ball 81's front is fixed with lead screw 82, lead screw 82's front is fixed with disc 83, lead screw 82's surface threaded connection has thread bush 84, thread bush 84's the outside is fixed with carousel 85, the recess 86 that cooperation lead screw 82 used is seted up in the front of chamber door 3, can seal chamber door 3, it is too big to avoid the gap between chamber door 3 and the converter shell 1, cause the dust directly to get into inside the converter shell 1 from the gap, influence the operational environment of converter host computer 2.

Sealing ring 12 is bonded on the right side of box door 3, and draw-in groove 13 that cooperation sealing ring 12 used is seted up in the front of converter shell 1, through the setting of sealing ring 12 and draw-in groove 13, increases the leakproofness of box door 3, prevents that the dust from getting into in the gap when box door 3 is closed.

The locating column 14 is all fixed with in proper order from last to down in the front on chamber door 3 right side, and the locating hole that cooperation locating column 14 used is seted up on the positive right side of converter shell 1, through the setting of locating column 14 and locating hole, conveniently fixes a position chamber door 3, prevents that chamber door 3 from taking place to rock, causes sealing washer 12 unable card in draw-in groove 13, causes partial sealing washer 12 card to produce great gap between chamber door 3 and converter shell 1.

First spout 15 has all been seted up at the front and the back of fixed box 6 inner chamber, the inner chamber sliding connection of first spout 15 has first slider 16, first slider 16 one side in opposite directions run through first spout 15 and with the front and the back fixed connection of first fly leaf 74, through the cooperation of first spout 15 and first slider 16, conveniently carry out spacing fixed to first fly leaf 74, prevent that first fly leaf 74 from taking place to rock, cause bracing piece 75 to take place to twist and the fracture, supplementary first fly leaf 74 is moved about simultaneously.

Second spout 17 has all been seted up to the front and the back at fixed box 6 inner chamber top, the inner chamber sliding connection of second spout 17 has second slider 18, the bottom of second slider 18 run through second spout 17 and with the top fixed connection of second fly leaf 76, through the setting of second spout 17 and second slider 18, carry out fixed stay to second fly leaf 76, prevent that second fly leaf 76 from breaking away from with the top of fixed box 6 inner chamber, produce great gap, can't carry out the separation to the dust, supplementary second fly leaf 76 removes simultaneously and removes and carries out the shutoff to round hole 9.

The limiting plate 19 is fixed on the right side of the top of the inner cavity of the fixed box 6, the springs 20 are sequentially fixed on the left side of the limiting plate 19 from front to back, the left side of each spring 20 is movably connected with the right side of the corresponding second movable plate 76, the limiting plate 19 and the springs 20 are arranged, the second movable plates 76 are conveniently limited, and meanwhile when the first movable plates 74 continue to move rightwards, the second movable plates 76 are extruded by the aid of the supporting rods 75, and the second movable plates 76 are tightly attached to the top of the inner cavity of the fixed box 6.

The top of converter shell 1 is fixed with protective cover 21, and protective cover 21's cross section is trapezoidal, through protective cover 21's setting, externally carries out the separation to the dust, reduces the dust volume that gets into in the air outlet 5.

Rubber pad 22 is bonded to the back of carousel 85, and the antiskid line has been seted up at the back of rubber pad 22, through the setting of rubber pad 22, increases the frictional force between carousel 85 and the chamber door 3, prevents that carousel 85 from taking place the reversal, influences the leakproofness of chamber door 3.

When the temperature sensor 11 detects temperature rise in the frequency converter shell 1, the user controls the exhaust fan 4 to exhaust hot air from the air outlet 5, the controller simultaneously opens the motor 71, the output shaft of the motor 71 drives the screw 72 to rotate, the screw 72 drives the threaded sleeve 73 to move rightwards on the surface of the screw 72, the threaded sleeve 73 drives the first movable plate 74 to move rightwards, the first movable plate 74 drives the second movable plate 76 to move rightwards through the supporting rod 75, and the second movable plate 76 seals the round hole 9 and the air outlet 5, and the second movable plate 76 is tightly attached to the top of the inner cavity of the fixed box 6 under the action of the supporting rod 75.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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. A frequency converter with a sealing structure comprises a frequency converter shell (1), and is characterized in that: the bottom of the inner cavity of the frequency converter shell (1) is fixedly provided with a frequency converter host (2), the front left side of the frequency converter shell (1) is hinged with a box door (3) through a hinge, the left side of the box door (3) is fixedly provided with a controller, the inner cavity of the frequency converter shell (1) is transversely fixed with a fixing plate, an exhaust fan (4) is embedded in the center of the fixing plate, the top of the frequency converter shell (1) is provided with an air outlet (5), the top of the inner cavity of the frequency converter shell (1) is fixedly provided with a fixing box (6), the top of the fixing box (6) is provided with a round hole (9) used by matching with the air outlet (5), the periphery of the bottom of the fixing box (6) is provided with vent holes (10), the inner cavity of the fixing box (6) is provided with a moving mechanism (7), the moving mechanism (7) comprises a motor (71), and the motor (71) is fixed on the right side of the inner cavity of the fixing box (6), the output shaft of motor (71) is fixed with screw rod (72), the left side of screw rod (72) is passed through the bearing and is rotated in the inner chamber of stationary box (6), the surperficial threaded connection of screw rod (72) has swivel nut (73), the outside of swivel nut (73) is fixed with first fly leaf (74), all there is bracing piece (75) all through sliding seat swing joint all around at first fly leaf (74) top, there is second fly leaf (76) one side of keeping away from first fly leaf (74) through sliding seat swing joint in bracing piece (75), the top of second fly leaf (76) and the top sliding connection of stationary box (6) inner chamber, the positive right side of converter shell (1) is provided with fixture (8), the both sides of converter shell (1) inner chamber all are provided with temperature sensor (11).

2. A frequency converter having a sealing structure according to claim 1, wherein: fixture (8) are including movable ball (81), movable ball (81) inlay and locate converter shell (1) positive right side, the front of movable ball (81) is fixed with lead screw (82), the front of lead screw (82) is fixed with disc (83), the surperficial threaded connection of lead screw (82) has thread bush (84), the outside of thread bush (84) is fixed with carousel (85), recess (86) that cooperation lead screw (82) used are seted up in the front of chamber door (3).

3. A frequency converter having a sealing structure according to claim 1, wherein: the right side of the box door (3) is bonded with a sealing ring (12), and the front side of the frequency converter shell (1) is provided with a clamping groove (13) matched with the sealing ring (12) for use.

4. A frequency converter having a sealing structure according to claim 1, wherein: the front on chamber door (3) right side is from last to all being fixed with reference column (14) down in proper order, the locating hole that cooperation reference column (14) used is seted up on the positive right side of converter shell (1).

5. A frequency converter having a sealing structure according to claim 1, wherein: first spout (15) have all been seted up at the front and the back of fixed case (6) inner chamber, the inner chamber sliding connection of first spout (15) has first slider (16), first slider (16) opposite side run through first spout (15) and with the front and the back fixed connection of first fly leaf (74).

6. A frequency converter having a sealing structure according to claim 1, wherein: second spout (17) have all been seted up to the front and the back at fixed case (6) inner chamber top, the inner chamber sliding connection of second spout (17) has second slider (18), the bottom of second slider (18) run through second spout (17) and with the top fixed connection of second fly leaf (76).

7. A frequency converter having a sealing structure according to claim 1, wherein: the right side at fixed case (6) inner chamber top is fixed with limiting plate (19), the left side of limiting plate (19) all is fixed with spring (20) after to in the past in proper order, the left side of spring (20) and the right side swing joint of second fly leaf (76).

8. A frequency converter having a sealing structure according to claim 1, wherein: the top of converter shell (1) is fixed with protective cover (21), the cross section of protective cover (21) is trapezoidal.

9. A frequency converter having a sealing structure according to claim 2, wherein: the back of the rotary table (85) is bonded with a rubber pad (22), and the back of the rubber pad (22) is provided with anti-skid grains.