Active cooling and noise reduction mechanism and system for electric power equipment cabinet

Abstract

An active cooling and noise reduction mechanism and system for an electric power equipment cabinet comprises a box body, a shell body is fixedly connected to the top of the box body, a ventilation net is arranged in the lower wall of the box body, a sound insulation board is also arranged in the inner wall of the box body, the shell body is hollow and a slidable and resettable driving plate is arranged therein, a plurality of nozzles 1 are fixedly connected to the bottom of the driving plate, the shell body is also provided with a plurality of nozzles 2 corresponding to the nozzles 1, the nozzles 1 are inserted into the nozzles 2 and air holes are left between the two, a sealing ring is also arranged on one side of the nozzles, and the sealing ring moves downward to block the air holes. The present invention provides an active cooling and noise reduction mechanism and system for an electric power equipment cabinet, which divides the start-up of a fan into two gears, high and low. When the fan is in low gear, wind is ejected from nozzles 1 and 2, and the box body is fully cooled under the diffusion effect of nozzle 2. When the fan is in high gear, high-pressure airflow is ejected from nozzle 1 to perform concentrated and efficient heat dissipation in the box body, and dust accumulated on electrical components is removed to prevent dust from affecting the heat dissipation of electrical components.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and more specifically, to an active cooling and noise reduction mechanism for a power equipment cabinet and a system thereof. Background Art

[0002] The power equipment cabinet generally refers to the distribution cabinet, which is a general term for the motor control center. The existing distribution cabinet has a single structure and generally uses a fan to dissipate heat in the cabinet. The heat dissipation method is single and inefficient. In addition, a filter is generally provided at the inlet of the fan to filter dust. The filter is easily blocked and affects the working efficiency of the fan. The existing distribution cabinet sometimes makes noise during operation, disrupting the lives of residents. Therefore, in view of this situation, it is urgently necessary to propose an active cooling and noise reduction mechanism and system for the power equipment cabinet to overcome the shortcomings in current practical applications. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] The present invention aims to solve the problems that the existing power equipment cabinet cannot perform efficient and diversified heat dissipation, the fan filter is easily blocked, affecting work efficiency, and the distribution cabinet cannot reduce noise.

[0005] (II) Technical solution

[0006] The purpose and efficacy of an active cooling and noise reduction mechanism of an electric power equipment cabinet and its system of the present invention are achieved by the following specific technical means: an active cooling and noise reduction mechanism of an electric power equipment cabinet, comprising a box body, a shell fixedly connected to the top of the box body, and a ventilation net is arranged in the lower wall of the box body, a sound insulation board is also arranged in the inner wall of the box body, the shell body is hollow and has a slidable and resettable driving plate therein, a plurality of nozzles 1 are fixedly connected to the bottom of the driving plate, the shell body is also provided with a plurality of nozzles 2 corresponding to the nozzles 1, the nozzles 1 are inserted into the nozzles 2 and air holes are left between the two, a sealing ring is also arranged on one side of the nozzle, the sealing ring moves downward to block the air holes, a magnet is arranged under the driving plate, a magnet is also arranged at a corresponding position on the shell body, the magnets are separated in an initial state, a fan is also arranged in the shell body, a ventilation pipe is arranged on the right side of the fan and fixed to the shell body, and a filter is arranged on the shell body on the other side of the fan.

[0007] Furthermore, an air cavity 1 is provided in the shell, and a partition is provided in the air cavity 1 to divide it into two cavities on the left and right sides. A reset spring for resetting is provided on the left side of the partition, and a one-way valve for one-way air intake is provided on the right side of the air cavity 1. The right side of the air cavity 1 is also connected to the air guide pipe through a switch mechanism. An air cavity 2 is fixedly connected above the filter, and a plurality of nozzles are provided on the air cavity 2 to be aligned with the cross-section of the filter. The other side of the air guide pipe is fixedly connected to the air cavity 2.

[0008] Furthermore, the switch mechanism includes a connecting rod, a connecting rod is fixedly connected above the driving plate, a piston is fixedly connected above the connecting rod and is slidably connected to the air cavity one, and an air vent connected to the air duct is provided in the air cavity one. When the piston moves downward, the connection between the air vent and the air duct is blocked.

[0009] Furthermore, the filter is tilted to the lower left, and a bracket is provided on the shell on the left side of the filter. The bracket is arc-shaped, and the bracket at the connection with the filter is also arc-shaped and tangent to the filter. A filter cloth is provided in the bracket, and a bottom plate is also provided under the bracket.

[0010] Furthermore, the bracket is detachably connected to the shell by interference fit.

[0011] Furthermore, a water storage chamber is provided on the left side of the shell, and a plurality of guide pipes are provided in the water storage chamber. A plurality of arc-shaped air guide grooves are provided on the shell, one side of the air guide groove is connected to the filter, and the other side is located at the junction of the bracket and the shell, and the other side of the guide pipe is located in the air guide groove at the junction of the shell and the bracket.

[0012] Furthermore, the air guide groove includes an air inlet and an air outlet, the air inlet is located at the connection between the lower end of the filter and the shell, the air outlet is located at the connection between the shell and the bracket, and the width of the air inlet is greater than the width of the air outlet.

[0013] The present invention also provides an active cooling and noise reduction system for an electric power equipment cabinet, comprising any of the above-mentioned active cooling and noise reduction mechanisms for an electric power equipment cabinet.

[0014] Beneficial effects:

[0015] 1. The present invention provides an active cooling and noise reduction mechanism and system for an electric power equipment cabinet, which isolates the noise generated by the electrical components in the distribution cabinet when they are working by providing a sound insulation board on the inner wall of the cabinet, thereby avoiding the noise from the distribution cabinet to disturb the public.

[0016] 2. The present invention provides an active cooling and noise reduction mechanism and system for an electric power equipment cabinet. The mechanism divides the fan startup into two gears, high and low. When the fan is in low gear, wind is ejected from nozzles one and two. Under the diffusion effect of nozzle two, the box body is fully cooled. When the fan is in high gear, high-pressure airflow is ejected from nozzle one to dissipate heat in the box body in a concentrated and efficient manner. At the same time, dust accumulated on electrical components is removed to prevent dust from affecting the heat dissipation of electrical components.

[0017] 3. The present invention provides an active cooling and noise reduction mechanism and system for an electric power equipment cabinet, which stores high-pressure gas in an air cavity and then sprays it out through a nozzle to clean the filter, thereby avoiding excessive dust accumulation on the filter and causing a decrease in the working efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional view of the entirety of the present invention.

[0019] Figure 2 It is a front cross-sectional schematic diagram of the housing of the present invention.

[0020] Figure 3 For the present invention Figure 2 A magnified schematic diagram of center A.

[0021] Figure 4 It is a top cross-sectional schematic diagram of the housing of the present invention.

[0022] Figure 5 It is a front cross-sectional schematic diagram of the bracket of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the support of the present invention.

[0024] Figure 7 For the present invention Figure 6 A magnified schematic diagram of point B in the middle.

[0025] Figure 8 It is a schematic diagram of the workflow of the present invention.

[0026] Figure 1-8 In: 1-box, 2-ventilation net, 3-shell, 4-drive plate, 5-nozzle one, 6-air hole, 7-sealing ring, 8-nozzle two, 9-magnet, 10-ventilation pipe, 11-air cavity one, 12-check valve, 13-partition, 14-reset spring, 15-connecting rod, 16-piston, 17-vent, 18-air guide pipe, 19-fan, 20-air cavity two, 21-nozzle, 22-filter, 23-bracket, 24-filter cloth, 25-bottom plate, 26-air guide groove, 261-air inlet, 262-air outlet, 27-water storage cavity, 28-guide pipe, 29-soundproof board. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] As attached Figure 1-8As shown, an active cooling and noise reduction mechanism for an electric power equipment cabinet includes a box body 1, characterized in that: a shell 3 is fixedly connected to the top of the box body 1, and a ventilation net 2 is arranged in the lower wall of the box body 1, the ventilation net 2 is used for ventilation and heat dissipation, and a sound insulation board 29 is also arranged on the inner wall of the box body 1, and the sound insulation board 29 is embedded in various places of the inner wall of the box body 1 to shield the noise emitted by the facilities in the distribution cabinet to avoid adverse effects on the lives of residents, the shell body 3 is hollow and a slidable and resettable driving plate 4 is arranged therein, the driving plate 4 can realize the reset function through a reset spring, and is slidably connected to the shell body 3 through a telescopic rod, and a plurality of nozzles 5 are fixedly connected below the driving plate 4, The shell 3 is also provided with a plurality of nozzles 8 corresponding to the nozzles 1 and 5. The nozzles 2 and 8 are in the shape of an inverted cone and dispersed outward, and the opening below the nozzles 1 and 5 is in the shape of gathering and shrinking inward. The nozzles 1 and 5 are inserted into the nozzles 2 and a gap is left between the two to form an air hole 6. A sealing ring 7 is also provided on the side of the nozzles 1 and 5. When the sealing ring 7 moves downward, the air hole 6 is blocked, thereby blocking the nozzles 2 and 8. A magnet 9 is provided under the drive plate 4, and a magnet 9 is also provided at a corresponding position on the shell 3. The magnet 9 is initially in a separated state under the action of a reset spring on the drive plate 4. A fan 19 is also provided in the shell 3, and a vent is provided on the right side of the fan 19. The air duct 10 is fixedly connected to the shell 3, and the wind blown out of the ventilation duct 10 is turned through the shell 3 to face the drive plate 4. A filter 22 is provided on the shell 3 on the other side of the fan 19. The filter 22 is used to filter dust. The fan 19 can be controlled by a control chip, and the power of the fan 19 is divided into two gears, high and low. When the fan 19 is in resistance, the wind is started by starting the fan 19 to enter the shell 3 through the ventilation duct 10, and then blown down towards the drive plate 4, and then blown out through the nozzle 1 5 and the nozzle 2 8. The wind is diffused under the diffusion effect of the nozzle 2 8, and then the electrical components in the box 1 are cooled. The wind is ventilated from the bottom of the box 1. The net 2 blows out heat to dissipate the heat. When the fan 19 is adjusted to a high gear, the wind is started by the fan 19 to pass through the ventilation pipe 10 into the shell 3, and then blown down directly towards the drive plate 4. Under the wind pressure of the high-speed fan 19 and the mutual attraction of the two magnets 9, the nozzle 1 5 is driven to move downward, and the sealing ring 7 is driven to block the air hole 6, so that the nozzle 2 8 is blocked, and the wind is ejected from the nozzle 1 5 to dissipate the heat in the box body 1. Due to the effect of the high wind pressure, the electrical components in the box body 1 are efficiently dissipated, and the dust accumulated on the electrical components is also removed, thereby avoiding the heating of the electrical components caused by dust accumulation.

[0029] Among them, as attached Figure 2-4As shown, as a further improved structure and implementation method, in order to prevent dust from collecting on the filter screen 22 and causing the fan 19 to have a reduced efficiency, an air cavity 11 is provided in the housing 3, and the air cavity 11 can be cylindrical, and a partition 13 is provided in the air cavity 11 to divide it into two cavities on the left and right sides, and a reset spring 14 for resetting is provided on the left side of the partition 13, and a one-way valve 12 for one-way air intake is provided on the right side of the air cavity 11, wherein the one-way valve 12 can be a spring-type one-way valve 12, and the right side of the air cavity 11 It is also connected to the air duct 18 through a switch mechanism. An air cavity 20 is fixedly connected above the filter 22. A plurality of nozzles 21 are provided on the air cavity 20 to align with the cross-section of the filter 22. The other side of the air duct 18 is fixedly connected to the air cavity 20. A sufficient amount of gas is stored in the air cavity 11, and the gas therein is released through the air duct 18 to flow into the air cavity 20, and then sprayed out from the nozzles 21 to clean the dust on the filter 22, thereby preventing dust accumulation on the filter 22.

[0030] Among them, as attached Figure 2-4 As shown in the figure, as a specific structure and implementation of the switch mechanism, the switch mechanism includes a connecting rod 15, the connecting rod 15 is fixedly connected to the top of the driving plate 4, and the piston 16 slidably connected to the air chamber 11 is fixedly connected to the top of the connecting rod 15. The air chamber 11 is provided with a vent hole 17 connected to the air guide pipe 18. When the piston 16 moves downward, the connection between the vent hole 17 and the air guide pipe 18 is blocked. When the fan 19 is turned on the high gear, the driving plate 4 moves downward to drive the connecting rod 15 to move downward, and then drives the piston 16 to move downward to block the vent hole 17. The air hole 17 and the air guide pipe 18 are connected. Under the action of the wind pressure in the shell 3, the wind enters the air cavity 11 from the one-way valve 12, and then drives the partition 13 in the air cavity 11 to move to the left, so that the air pressure in the air cavity 11 is balanced with the high air pressure in the shell 3. When the fan 19 stops the high gear, the drive plate 4 resets and drives the piston 16 to reset. Under the action of the reset spring 14, the partition 13 moves to the right, and then drives the air in the air cavity 11 to flow into the air cavity 2 20, and then is sprayed out from the nozzle 21 to clean the filter 22.

[0031] Among them, as attached Figure 4 As shown, as a further improved structure, in order to prevent dust from spreading around when the filter 22 is cleaned, the filter 22 is tilted to the lower left, and a bracket 23 is provided on the shell 3 on the left side of the filter 22. The bracket 23 is arc-shaped, and the bracket 23 at the connection with the filter 22 is also arc-shaped and tangent to the filter 22. A filter cloth 24 is provided in the bracket 23, and a bottom plate 25 is also provided under the bracket 23. The shell 3, the bracket 23, the filter cloth 24 and the bottom plate 25 form a spiral-like cross-section. When wind is blown out from the nozzle 21 to clean the filter 22, the dust flows along the wind to the shell 3, and then flows to the filter cloth 24 on the bracket 23. The wind is blown out through the filter cloth 24, and the dust accumulates on the filter cloth 24 and the bottom plate 25, thereby preventing the dust from flying around.

[0032] Among them, as attached Figure 4 As shown, the bracket 23 is detachably connected to the housing 3 by interference fit. The bracket 23 is detachably connected to the housing 3 so that the bracket 23 can be easily removed to clean the filter cloth 24 and the bottom plate 25 thereon.

[0033] Among them, as attached Figure 4-6 As shown, a water storage chamber 27 is provided on the left side of the shell 3, and a plurality of guide pipes 28 are provided in the water storage chamber 27. The bottom of the guide pipe 28 is connected to the bottom of the water storage chamber 27. A plurality of arc-shaped air guide grooves 26 are provided on the shell 3. One side of the air guide groove 26 is connected to the filter screen 22, and the other side is located at the connection between the bracket and the shell 3. The other side of the guide pipe 28 is located in the air guide groove 26 at the connection between the shell 3 and the bracket, that is, wind is blown out from the nozzle 21 and flows through the filter screen 22, and further enters into the air guide groove 26. Driven by high wind speed, based on the Bernoulli effect, the greater the flow rate of the fluid, the smaller the pressure, that is, the water in the water storage chamber 27 is sprayed out through the guide pipe 28, thereby wetting the dust, thereby further avoiding the flying of dust.

[0034] Among them, as attached Figure 7 As shown, the air guide groove 26 includes an air inlet 261 and an air outlet 262. The air inlet 261 is located at the connection between the lower end of the filter 22 and the shell 3, and the air outlet 262 is located at the connection between the shell 3 and the bracket 23. The width of the air inlet 261 is greater than the width of the air outlet 262. Based on the fact that the wind speed increases in narrow places, the water in the water storage chamber 27 can be better drawn out and sprayed through the guide pipe 28.

[0035] The present invention also provides an active cooling and noise reduction system for an electric power equipment cabinet, comprising any of the above-mentioned active cooling and noise reduction mechanisms for an electric power equipment cabinet.

[0036] Working principle:

[0037] When the power distribution cabinet is working, the noise generated by the electrical components in the power distribution cabinet when working is isolated by the sound insulation board 29 provided on the inner wall of the box body 1, thereby avoiding the noise from the power distribution cabinet disturbing people. When the power distribution cabinet needs to be cooled, the fan 19 is started at a low gear through the control chip, so that the fan 19 blows out wind into the shell 3. At this time, the wind pressure is too low, the drive plate 4 does not move obviously, the magnets 9 do not attract each other, and the wind is ejected from the nozzle 1 5 and the nozzle 2 8. Under the diffusion effect of the nozzle 2 8 , the wind blows over the electrical components and takes away the heat and blows out from the ventilation net 2, thereby allowing the wind to dissipate heat more comprehensively in the box body 1. When the temperature in the distribution cabinet is too high, the fan 19 can be started at a high gear, and then the driving plate 4 can be driven to move downward under a sufficiently strong wind pressure. The magnets 9 are attracted to each other, and then the sealing ring 7 on the nozzle 1 5 is driven to block the air hole 6 on the nozzle 2 8, so that the high-pressure wind is blown out from the nozzle 1 5, thereby efficiently dissipating the heat of the electrical components in the box body 1. At the same time, the dust accumulated on the electrical components is removed by the high-pressure airflow, thereby preventing the dust accumulated on the electrical components from heating up easily. The driving plate 4 moves downward and drives the piston 16 to move downward through the connecting rod 15 to block the connection between the vent hole 17 and the air guide pipe 18. At the same time, the high-pressure air in the shell 3 enters the air cavity 11 through the one-way valve 12, thereby driving the partition 13 to move leftward. When the fan 19 is closed at a high gear, the piston 16 is reset, and then the partition 13 moves to the right under the action of the reset spring 14 to seal the air cavity 11. 1 is pressed into the air cavity 20, and then sprayed out from the nozzle 21 to clean the filter 22, so as to avoid the blockage of the filter 22 affecting the operation efficiency of the fan 19. The wind blown out from the nozzle 21 carries the dust on the filter 22 into the air guide groove 26, and then drives the guide pipe 28 to spray water mist to combine with the dust. The wind seeps out from the filter cloth 24, and the dust accumulates on the filter cloth 24 and the bottom plate 25, so as to avoid the dust flying. The bracket 23 is set to be detachable to facilitate the replacement and cleaning of the filter cloth 24 and the bottom plate 25.

Claims

1. An active cooling and noise reduction mechanism for an electric power equipment cabinet, comprising a cabinet (1), characterized in that: A shell (3) is fixedly connected to the upper part of the box body (1), and a ventilation net (2) is provided in the lower wall of the box body (1). A sound insulation board (29) is also provided on the inner wall of the box body (1). The shell (3) is hollow and has a slidable and resettable driving plate (4) therein. A plurality of nozzles (5) are fixedly connected to the lower part of the driving plate (4). The shell (3) is also provided with a plurality of nozzles (8) corresponding to the nozzles (5). The nozzles (5) are inserted into the nozzles (8) and air holes (6) are left between the nozzles (8). A sealing ring (7) is also provided on one side of the nozzle (5), and the sealing ring (7) moves downward to seal the air hole (6). A magnet (9) is provided below the driving plate (4), and a magnet (9) is also provided at a corresponding position on the shell (3). The magnet (9) is separated in an initial state. A fan (19) is also provided in the shell (3). A ventilation pipe (10) is provided on the right side of the fan (19) and is fixedly connected to the shell (3), and a filter screen (22) is provided on the shell (3) on the other side of the fan (19).

2. The active cooling and noise reduction mechanism for a power equipment cabinet according to claim 1, characterized in that: An air cavity (11) is provided in the shell (3), and a partition (13) is provided in the air cavity (11) to divide the air cavity (11) into two cavities on the left and right sides. A reset spring (14) for resetting is provided on the left side of the partition (13), and a one-way valve (12) for one-way air intake is provided on the right side of the air cavity (11). The right side of the air cavity (11) is also connected to the air guide pipe (18) through a switch mechanism. An air cavity (20) is fixedly connected above the filter screen (22), and a plurality of nozzles (21) are provided on the air cavity (20) to align with the cross section of the filter screen (22). The other side of the air guide pipe (18) is fixedly connected to the air cavity (20).

3. The active cooling and noise reduction mechanism for a power equipment cabinet according to claim 2, characterized in that: The switch mechanism comprises a connecting rod (15), the connecting rod (15) being fixedly connected above the driving plate (4), a piston (16) being fixedly connected slidably in an air cavity (11) above the connecting rod (15), an air vent (17) being provided in the air cavity (11) and being connected to an air guide tube (18), and the connection between the air vent (17) and the air guide tube (18) being blocked when the piston (16) moves downward.

4. The active cooling and noise reduction mechanism for a power equipment cabinet according to claim 1, characterized in that: The filter screen (22) is arranged to be inclined to the lower left, and a bracket (23) is provided on the housing (3) on the left side of the filter screen (22), the bracket (23) is in an arc shape, and the bracket (23) at the connection with the filter screen (22) is also in an arc shape and is tangent to the filter screen (22), a filter cloth (24) is provided in the bracket (23), and a bottom plate (25) is also provided below the bracket (23).

5. The active cooling and noise reduction mechanism for a power equipment cabinet according to claim 4, characterized in that: The bracket (23) is detachably connected to the housing (3) by interference fit.

6. The active cooling and noise reduction mechanism for a power equipment cabinet according to claim 4, characterized in that: A water storage chamber (27) is provided on the left side of the shell (3), a plurality of flow guide tubes (28) are provided in the water storage chamber (27), a plurality of arc-shaped air guide grooves (26) are provided on the shell (3), one side of the air guide groove (26) is connected to the filter screen (22), and the other side is located at the junction of the bracket and the shell (3), and the other side of the flow guide tube (28) is located in the air guide groove (26) at the junction of the shell (3) and the bracket.

7. The active cooling and noise reduction mechanism for a power equipment cabinet according to claim 6, characterized in that: The air guide groove (26) comprises an air inlet (261) and an air outlet (262); the air inlet (261) is located at the connection between the lower end of the filter (22) and the housing (3); the air outlet (262) is located at the connection between the housing (3) and the bracket (23); the width of the air inlet (261) is greater than the width of the air outlet (262).

8. An active cooling and noise reduction system for a power equipment cabinet, characterized in that: An active cooling and noise reduction mechanism for an electric power equipment cabinet comprising any one of claims 1 to 7.

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