CN114825098A

CN114825098A - Switching power supply suitable for cold environment

Info

Publication number: CN114825098A
Application number: CN202210492883.7A
Authority: CN
Inventors: 帅春江; 马二华; 杨明托; 郑树琼; 李平; 林璐
Original assignee: Mester Led Ltd
Current assignee: Mester Led Ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-07-29

Abstract

The invention discloses a switching power supply suitable for a cold environment, and relates to the technical field of switching power supplies. Including the power supply box, the inner wall of power supply box is fixed with switching power supply and temperature sensor, the louvre has been seted up to the lateral wall of power supply box, the inner wall of louvre is fixed with the dust screen, the top of power supply box is fixed with the roof, the lateral wall of power supply box is fixed with the baffle, the inner wall of power supply box is fixed with the supporting shoe, the top of supporting shoe is fixed with the motor, the output of motor is fixed with the pivot, this switching power supply who is applicable to under the cold environment, and under chilly weather, because of the motor does not start, does not dispel the heat to switching power supply, through setting up the heated board, makes the heated board laminate to louvre department and shelter from, and then can prevent that external cold air from getting into in the power supply box, causes the switching power supply in the power supply box impaired easily, plays the effect of protection switching power supply.

Description

Switching power supply suitable for cold environment

Technical Field

The invention relates to the technical field of switching power supplies, in particular to a switching power supply suitable for a cold environment.

Background

A switch mode power supply, also called a switching power supply or a switching converter, is a high frequency power conversion device, which is a kind of power supply. The function is to convert a level voltage into a voltage or current required by the user terminal through different types of architectures. The input of the switching power supply is mostly an ac power supply (e.g., commercial power) or a dc power supply, and the output is mostly equipment requiring a dc power supply, such as a personal computer, and the switching power supply performs voltage and current conversion between the two. The switching power supply product is widely applied to the fields of industrial automation control, military equipment, scientific research equipment, LED illumination, industrial control equipment, communication equipment, power equipment, instruments and meters, medical equipment, semiconductor refrigeration and heating, air purifiers, electronic refrigerators, liquid crystal displays, LED lamps, communication equipment, audio-visual products, security monitoring, LED lamp belts, computer cases, digital products, instruments and the like.

The existing switching power supply is generally installed in a power supply box when being installed outdoors, however, when the switching power supply is radiated, the switching power supply is radiated by a radiating hole arranged on the power supply box, and when the switching power supply is in a low-temperature environment, if the radiating hole is always in an open state, cold air may enter the power supply box, so that the temperature in the power supply box is reduced, and further the switching power supply may be damaged; in view of this, we propose a switching power supply suitable for use in cold environments.

Disclosure of Invention

Technical problem to be solved

In view of the deficiencies of the prior art, the present invention provides a switching power supply suitable for use in cold environments, which solves the problems mentioned in the background art.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a switching power supply suitable for being used in a cold environment comprises a power supply box, wherein a switching power supply and a temperature sensor are fixed on the inner wall of the power supply box, heat dissipation holes are formed in the side wall of the power supply box, a dust screen is fixed on the inner wall of each heat dissipation hole, a top plate is fixed at the top of the power supply box, a baffle is fixed on the side wall of the power supply box, a supporting block is fixed on the inner wall of the power supply box, a motor is fixed at the top of the supporting block, a rotating shaft is fixed at the output end of the motor, a first bevel gear is fixed at one end, away from the motor, of the rotating shaft, the first bevel gear is meshed with a second bevel gear, the inner wall of the second bevel gear is fixed on the outer wall of a rotating rod, the top of the rotating rod is rotatably installed on the inner wall of the power supply box, fan blades are fixed at the bottom of the rotating rod, and gears are fixed on the outer wall of the rotating rod, the power supply box is characterized in that the gear and the rack are meshed with each other, a reciprocating mechanism is arranged on the rack, and a beating mechanism is arranged in the power supply box.

Preferably, a first spring is fixed on one side of the rack close to the motor, and one side of the first spring far away from the rack is fixed on the inner wall of the power box.

Preferably, the reciprocating mechanism comprises a fixed block, the fixed block is fixed on the rack, a guide rod is fixed on one side, away from the motor, of the fixed block, a moving block is slidably mounted on the outer wall of the guide rod, a second spring is fixed on one side, close to the fixed block, of the moving block, one side, away from the moving block, of the second spring is fixed on the fixed block, and the moving block is fixed on the movable teeth.

Preferably, a connecting plate is fixed to one end, away from the rack, of the guide rod, a pull rope is fixed to one side, away from the guide rod, of the connecting plate, the pull rope is wound on the fixed pulley, the top of the fixed pulley is fixed to the inner wall of the power box, one end, away from the connecting plate, of the pull rope is fixed to the heat-insulating plate, and the heat-insulating plate is slidably mounted on the outer wall of the power box.

Preferably, the top of rack is fixed with the slider, the top slidable mounting of slider is at the inner wall of spout, the spout is seted up at the inner wall of power supply box.

Preferably, the outer wall of dwang is fixed with first drive wheel, around being equipped with the drive belt on the first drive wheel, one side that first drive wheel was kept away from to the drive belt is around establishing on the second drive wheel, the inner wall of second drive wheel is fixed with the dwang.

Preferably, the top of the rotating rod is rotatably arranged at the bottom of the supporting plate, the supporting plate is fixed on the inner wall of the power box, and the outer wall of the rotating rod is fixedly provided with a cam.

Preferably, the beating mechanism comprises a fixing rod, the fixing rod is fixed on the inner wall of the power box, a sliding plate is slidably mounted on the outer wall of the fixing rod, an L-shaped connecting rod is fixed at the bottom of the sliding plate, and a rubber hammer is fixed at one end, far away from the sliding plate, of the L-shaped connecting rod.

Preferably, a third spring is fixed on one side of the sliding plate, which is far away from the motor, and one side of the third spring, which is far away from the sliding plate, is fixed on the inner wall of the power box.

(III) advantageous effects

The invention provides a switching power supply suitable for a cold environment. The method has the following beneficial effects:

(1) this be applicable to switching power supply under cold environment, when under chilly weather, because of the motor does not start, does not dispel the heat to switching power supply, through setting up the heated board, makes the heated board laminate to radiating hole department and shelter from, and then can prevent that external cold air from entering into the power supply box, cause the switching power supply of power supply box impaired easily, play protection switching power supply's effect.

(2) This be applicable to switching power supply under the cold environment, when meetting hot weather, and then make the motor start through temperature sensor, it is rotatory to make the pivot, it is rotatory to drive first conical gear, it is rotatory through second conical gear, it is rotatory to make the dwang, it dispels the heat to switching power supply to drive the flabellum rotation, when the pivot is rotatory, through the gear, the rack, the cooperation of reciprocating mechanism and stay cord, make stay cord pulling heated board rebound, make the heated board shelter from the louvre not, and then can make external cold air enter into the power supply box and dispel the heat to switching power supply.

(3) This be applicable to switching power supply under the cold environment, when the dwang is rotatory, it is rotatory to drive first drive wheel, through the drive belt, make the second drive wheel rotatory, it is rotatory to drive the dwang, make the cam rotate, through the cooperation of rapping mechanism, the dust screen that makes the rubber hammer can make a round trip beats, play the effect of clearance dust screen, prevent that the power supply box from installing outdoor, have a large amount of dusts to adhere to on the dust screen, and then can make the dust screen block up, influence the heat dissipation in the power supply box.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic diagram of the front view of the internal structure of the power box of the present invention;

FIG. 4 is an enlarged view of the structure A of FIG. 3 according to the present invention;

FIG. 5 is an enlarged view of the structure B in FIG. 3 according to the present invention;

FIG. 6 is an enlarged view of the structure C of FIG. 4 according to the present invention;

FIG. 7 is a schematic view of the cam of the present invention;

fig. 8 is a schematic structural view of the rubber hammer and the L-shaped connecting rod of the present invention.

In the figure: 1. a power supply box; 2. a top plate; 3. a switching power supply; 4. heat dissipation holes; 5. a dust screen; 6. a baffle plate; 7. a support block; 8. a motor; 9. a rotating shaft; 10. a first bevel gear; 11. a second bevel gear; 12. rotating the rod; 13. a fan blade; 14. a gear; 15. a rack; 16. a slider; 17. a chute; 18. a first spring; 19. a reciprocating mechanism; 191. a fixed block; 192. a guide bar; 193. a moving block; 194. a second spring; 195. a movable gear; 20. a connecting plate; 21. pulling a rope; 22. a thermal insulation board; 23. a fixed pulley; 24. a first drive pulley; 25. a transmission belt; 26. a second transmission wheel; 27. a rotating rod; 28. a support plate; 29. a cam; 30. a tapping mechanism; 301. fixing the rod; 302. a slide plate; 303. a third spring; 304. an L-shaped connecting rod; 305. a rubber hammer; 31. a temperature sensor.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a technical solution: a switching power supply suitable for cold environment comprises a power supply box 1, a switching power supply 3 and a temperature sensor 31 are fixed on the inner wall of the power supply box 1, heat dissipation holes 4 are formed in the side wall of the power supply box 1, the heat dissipation holes 4 are arranged to dissipate heat in the power supply box 1, a dust screen 5 is fixed on the inner wall of each heat dissipation hole 4, the dust screen 5 is arranged to prevent dust from entering the power supply box 1 through the heat dissipation holes 4 to damage the switching power supply 3, a top plate 2 is fixed on the top of the power supply box 1, a baffle 6 is fixed on the side wall of the power supply box 1, the arrangement of the top plate 2 and the baffle 6 can play a rainproof effect to prevent rainwater from entering the power supply box 1 to damage the switching power supply 3, a supporting block 7 is fixed on the inner wall of the power supply box 1, a motor 8 is fixed on the top of the supporting block 7, a rotating shaft 9 is fixed on the output end of the motor 8, a first bevel gear 10 is fixed on the end of the rotating shaft 9 far away from the motor 8, the first bevel gear 10 and the second bevel gear 11 are meshed with each other, the inner wall of the second bevel gear 11 is fixed on the outer wall of the rotating rod 12, the top of the rotating rod 12 is rotatably installed on the inner wall of the power box 1, the bottom of the rotating rod 12 is fixed with the fan blade 13, when the weather with higher temperature occurs, the temperature in the power box 1 can be raised, the motor 8 is controlled through the temperature sensor 31 to rotate the rotating shaft 9 reversely, the first bevel gear 10 reversely rotates, the second bevel gear 11 is driven to rotate normally, the rotating rod 12 drives the fan blade 13 to rotate, the fan blade 13 blows air to the switching power supply 3 for heat dissipation, the gear 14 is fixed on the outer wall of the rotating rod 12, the gear 14 and the rack 15 are meshed with each other, the first spring 18 is fixed on one side of the rack 15 close to the motor 8, one side of the first spring 18 far away from the rack 15 is fixed on the inner wall of the power box 1, when the rotating rod 12 rotates positively, the driving gear 14 rotates forwards, the rack 15 can be driven to move rightwards, the first spring 18 is compressed, a first driving wheel 24 is fixed on the outer wall of the rotating rod 12, a driving belt 25 is wound on the first driving wheel 24, one side, away from the first driving wheel 24, of the driving belt 25 is wound on a second driving wheel 26, a rotating rod 27 is fixed on the inner wall of the second driving wheel 26, the top of the rotating rod 27 is rotatably installed at the bottom of a supporting plate 28, the supporting plate 28 is fixed on the inner wall of the power box 1, a cam 29 is fixed on the outer wall of the rotating rod 27, when the rotating rod 12 rotates, the first driving wheel 24 is driven to rotate, the second driving wheel 26 is driven to rotate through the driving belt 25, the rotating rod 27 is further driven to rotate, the cam 29 can be driven to rotate, a reciprocating mechanism 19 is arranged on the rack 15, and a knocking mechanism 30 is arranged in the power box 1.

The reciprocating mechanism 19 comprises a fixed block 191, the fixed block 191 is fixed on a rack 15, a guide rod 192 is fixed on one side of the fixed block 191 far away from the motor 8, a moving block 193 is slidably mounted on the outer wall of the guide rod 192, a second spring 194 is fixed on one side of the moving block 193 close to the fixed block 191, one side of the second spring 194 far away from the moving block 193 is fixed on the fixed block 191, the moving block 193 is fixed on a movable tooth 195, a connecting plate 20 is fixed on one end of the guide rod 192 far away from the rack 15, a pull rope 21 is fixed on one side of the connecting plate 20 far away from the guide rod 192, the pull rope 21 is wound on a fixed pulley 23, the top of the fixed pulley 23 is fixed on the inner wall of the power box 1, one end of the pull rope 21 far away from the connecting plate 20 is fixed on an insulation board 22, the insulation board 22 is slidably mounted on the outer wall of the power box 1, a slide block 16 is fixed on the top of the rack 15, and the top of the slide block 16 is slidably mounted on the inner wall of a slide groove 17, the pull rope 21 penetrates through the side wall of the power box 1, the pull rope 21 can move at the penetrating position of the power box 1, when the rack 15 moves rightwards, the sliding block 16 can slide in the sliding groove 17, when the right side of the sliding block 16 is attached to the right side of the inner wall of the sliding groove 17, the gear 14 can rotate at the movable tooth 195, the gear 14 can always hit the movable tooth 195 to reciprocate leftwards and rightwards through the matching of the second spring 194, the rack 15 is fixed, when the rack 15 is driven by the gear 14 to move rightwards, the guide rod 192 can drive the connecting plate 20 to move rightwards, the pull rope 21 pulls the heat insulation plate 22 to move upwards, the heat dissipation holes 4 are opened, external cold air can enter the power box 1 through the heat dissipation holes 4 to effectively dissipate heat of the power box 1, the sliding groove 17 is formed in the inner wall of the power box 1, when the power box is in a low-temperature environment, through the temperature sensor 31, can control motor 8 and close, and then make pivot 9 stop rotatory, make gear 14 stop rotatory, be in compression state because of first spring 18, and pivot 9 of motor 8 does not have self-locking function, and the elasticity coefficient of first spring 18 is greater than the elasticity coefficient of third spring 303, and then can make first spring 18 drive rack 15 move left, make stay cord 21 lax, because of heated board 22 is because of self gravity, and then make heated board 22 remove downwards, make heated board 22 laminate to louvre 4 and shelter from, and then can prevent that external cold air from entering into power supply box 1, cause the switching power supply in the power supply box 1 impaired.

The rapping mechanism 30 comprises a fixed rod 301, the fixed rod 301 is fixed on the inner wall of the power box 1, a sliding plate 302 is slidably mounted on the outer wall of the fixed rod 301, an L-shaped connecting rod 304 is fixed on the bottom of the sliding plate 302, a rubber hammer 305 is fixed on one end of the L-shaped connecting rod 304 far away from the sliding plate 302, a third spring 303 is fixed on one side of the sliding plate 302 far away from the motor 8, and one side of the third spring 303 far away from the sliding plate 302 is fixed on the inner wall of the power box 1, when the cam 29 rotates, the end with the small radius of the cam 29 rotates to the left side of the rotating rod 27, the cam 29 presses the sliding plate 302 to move leftwards, the third spring 303 is compressed, the sliding plate 302 drives the L-shaped connecting rod 304 to move leftwards, the rubber hammer 305 moves leftwards, the rubber hammer 305 beats the dust screen 5, when the end with the large radius of the cam 29 rotates to the left side of the rotating rod 27, because the cam 29 does not contact with the sliding plate 302, the third spring 303 is in a compressed state, the third spring 303 drives the sliding plate 302 to move rightwards to return to the original position, and then when the cam 29 rotates, the rubber hammer 305 can beat the dust screen 5 back and forth, so that the effect of cleaning the dust screen 5 is achieved, the power box 1 is prevented from being installed outdoors, a large amount of dust is attached to the dust screen 5, and the dust screen 5 can be blocked, and the heat dissipation in the power box 1 is influenced.

When the switch power supply is in operation (or in use), in a weather with high temperature, because the power supply box 1 is installed outdoors, the temperature in the power supply box 1 can be increased, the rotating shaft 9 can be rotated reversely by the control motor 8 through the temperature sensor 31, the first bevel gear 10 can be rotated reversely, the second bevel gear 11 can be rotated normally, the rotating rod 12 can drive the fan blade 13 to rotate, the fan blade 13 can blow air to dissipate heat for the switch power supply 3, the rotating rod 12 can drive the gear 14 to rotate normally when rotating normally, the rack 15 can move rightwards, the first spring 18 can be compressed, the sliding block 16 can slide in the sliding groove 17, when the right side of the sliding block 16 is attached to the right side of the inner wall of the sliding groove 17, the gear 14 can rotate at the movable tooth 195, the gear 14 can always hit the movable tooth 195 to reciprocate leftwards and rightwards through the cooperation of the second spring 194, the rack 15 can be fixed, when the rack 15 is driven by the gear 14 to move rightwards, the guide rod 192 can drive the connecting plate 20 to move rightwards, the heat insulation plate 22 is pulled by the pull rope 21 to move upwards, the heat dissipation holes 4 are opened, external cold air can enter the power box 1 through the heat dissipation holes 4, the power box 1 can be effectively dissipated, when the rotating rod 12 rotates, the first transmission wheel 24 is driven to rotate, the second transmission wheel 26 is driven to rotate through the transmission belt 25, the rotating rod 27 is further driven to rotate, the cam 29 can be driven to rotate, when one end with a small radius of the cam 29 rotates to the left side of the rotating rod 27, the cam 29 can extrude the sliding plate 302 to move leftwards, the third spring 303 is compressed, the sliding plate 302 drives the L-shaped connecting rod 304 to move leftwards, the rubber hammer 305 moves leftwards, the rubber hammer 305 beats the dust screen 5, when one end with a large radius of the cam 29 rotates to the left side of the rotating rod 27, the cam 29 is not in contact with the sliding plate 302, because the third spring 303 is in a compressed state, the third spring 303 drives the sliding plate 302 to move rightwards to return to the original position, and further when the cam 29 rotates, the rubber hammer 305 can knock the dust screen 5 back and forth, so that the effect of cleaning the dust screen 5 is achieved, the power supply box 1 is prevented from being installed outdoors, a large amount of dust is attached to the dust screen 5, and the dust screen 5 is further blocked, so that the heat dissipation in the power supply box 1 is influenced;

when under low temperature environment, through temperature sensor 31, can control motor 8 and close, and then make pivot 9 stop rotatory, make gear 14 stop rotatory, be in compression state because of first spring 18, and pivot 9 of motor 8 does not have self-locking function, and then can make first spring 18 drive rack 15 and remove left, make stay cord 21 lax, because of heated board 22's self gravity, make heated board 22 remove downwards, make heated board 22 laminate and shelter from louvre 4, and then can prevent that external cold air from entering into power supply box 1, cause the switching power supply in the power supply box 1 impaired.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A switching power supply suitable for in cold environment, includes power supply box (1), its characterized in that: the inner wall of the power box (1) is fixed with a switching power supply (3) and a temperature sensor (31), the side wall of the power box (1) is provided with radiating holes (4), the inner wall of the radiating holes (4) is fixed with a dust screen (5), the top of the power box (1) is fixed with a top plate (2), the side wall of the power box (1) is fixed with a baffle (6), the inner wall of the power box (1) is fixed with a supporting block (7), the top of the supporting block (7) is fixed with a motor (8), the output end of the motor (8) is fixed with a rotating shaft (9), one end of the rotating shaft (9) far away from the motor (8) is fixed with a first bevel gear (10), the first bevel gear (10) and a second bevel gear (11) are in an intermeshing shape, the inner wall of the second bevel gear (11) is fixed on the outer wall of a rotating rod (12), the top of dwang (12) is rotated and is installed the inner wall in power supply box (1), the bottom of dwang (12) is fixed with flabellum (13), the outer wall of dwang (12) is fixed with gear (14), gear (14) are intermeshing form with rack (15), be provided with reciprocating mechanism (19) on rack (15), be provided with in power supply box (1) and beat mechanism (30).

2. The switching power supply according to claim 1, wherein: one side of the rack (15) close to the motor (8) is fixed with a first spring (18), and one side of the first spring (18) far away from the rack (15) is fixed on the inner wall of the power box (1).

3. The switching power supply according to claim 1, wherein: the reciprocating mechanism (19) comprises a fixed block (191), the fixed block (191) is fixed on the rack (15), a guide rod (192) is fixed on one side, away from the motor (8), of the fixed block (191), a moving block (193) is installed on the outer wall of the guide rod (192) in a sliding mode, a second spring (194) is fixed on one side, close to the fixed block (191), of the moving block (193), one side, away from the moving block (193), of the second spring (194) is fixed on the fixed block (191), and the moving block (193) is fixed on the movable teeth (195).

4. The switching power supply according to claim 3, wherein: one end of the guide rod (192) far away from the rack (15) is fixed with a connecting plate (20), one side of the connecting plate (20) far away from the guide rod (192) is fixed with a pull rope (21), the pull rope (21) winds on a fixed pulley (23), the top of the fixed pulley (23) is fixed on the inner wall of the power box (1), one end of the pull rope (21) far away from the connecting plate (20) is fixed on an insulation board (22), and the insulation board (22) is slidably mounted on the outer wall of the power box (1).

5. The switching power supply according to claim 1, wherein: the top of rack (15) is fixed with slider (16), the top slidable mounting of slider (16) is at the inner wall of spout (17), the inner wall at power supply box (1) is seted up in spout (17).

6. The switching power supply according to claim 1, wherein: the outer wall of dwang (12) is fixed with first drive wheel (24), around being equipped with drive belt (25) on first drive wheel (24), one side that first drive wheel (24) were kept away from in drive belt (25) is around establishing on second drive wheel (26), the inner wall of second drive wheel (26) is fixed with bull stick (27).

7. The switching power supply according to claim 6, wherein: the top of the rotating rod (27) is rotatably arranged at the bottom of the supporting plate (28), the supporting plate (28) is fixed on the inner wall of the power box (1), and a cam (29) is fixed on the outer wall of the rotating rod (27).

8. The switching power supply according to claim 1, wherein: the rapping mechanism (30) comprises a fixing rod (301), the fixing rod (301) is fixed on the inner wall of the power supply box (1), a sliding plate (302) is slidably mounted on the outer wall of the fixing rod (301), an L-shaped connecting rod (304) is fixed at the bottom of the sliding plate (302), and a rubber hammer (305) is fixed at one end, far away from the sliding plate (302), of the L-shaped connecting rod (304).

9. The switching power supply as claimed in claim 8, wherein: and a third spring (303) is fixed on one side of the sliding plate (302) far away from the motor (8), and one side of the third spring (303) far away from the sliding plate (302) is fixed on the inner wall of the power supply box (1).