Ventilation device of high-low voltage power distribution cabinet

Abstract

The utility model belongs to the technical field of power distribution cabinets, and discloses a high-low voltage power distribution cabinet ventilation device comprising a cabinet body, one end of the cabinet body is provided with air outlets at equal intervals, the top end of the inner wall of the cabinet body is provided with a cooling fan in a clamping manner, one end of the cooling fan is provided with a flow guide cover, and one end of the flow guide cover is provided with a blowing structure. The blowing structure comprises a corrugated pipe fixedly installed at one end of the flow guide cover, a flow guide pipe is fixedly installed at one end of the corrugated pipe, and round holes are formed in one end face of the flow guide pipe at equal intervals. According to the utility model, uniform ventilation can be carried out in the cabinet body, the ventilation effect is improved, air can flow in the cabinet body more smoothly, air circulation can be promoted, pollutants and peculiar smell in the air can be reduced, and thus the air quality in the cabinet body is improved; the problem of uneven heat dissipation of electronic components in the cabinet body caused by uneven ventilation in the cabinet body due to only one blowing port in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power distribution cabinets, and in particular relates to a ventilation device for high and low voltage power distribution cabinets. Background Art

[0002] The distribution cabinet is divided into power distribution cabinet, lighting distribution cabinet and metering cabinet, which is the final equipment of the power distribution system. The distribution cabinet is a general term for the motor control center. The distribution cabinet is used in places where the load is relatively dispersed and there are fewer circuits; the motor control center is used in places where the load is concentrated and there are more circuits. The inside of the distribution cabinet needs to be ventilated by a ventilation device, and the gas generated by the ventilation is used to dissipate the heat of the electrical components.

[0003] The existing ventilation device of the distribution cabinet utilizes the cooperation between the fan and the exhaust port to ventilate the cabinet. Since the blowing position of the fan is fixed, the problem of uneven local air flow rate inside the cabinet occurs, which further affects the use effect of the ventilation device. Utility Model Content

[0004] The utility model aims at the problem that the ventilation device of the power distribution cabinet in the prior art uses the cooperation between the fan and the exhaust port to ventilate the cabinet. Since the position of the fan blowing is fixed, the problem of uneven local air flow rate inside the cabinet occurs, which further affects the use effect of the ventilation device. The following technical solutions are proposed:

[0005] A ventilation device for a high and low voltage power distribution cabinet comprises: a cabinet, one end of which is provided with air outlets at equal distances, a cooling fan is clamped and installed at the top of the inner wall of the cabinet, one end of the cooling fan is provided with a guide cover, and one end of the guide cover is provided with a blowing structure;

[0006] The blowing structure comprises a bellows fixedly mounted on one end of the air guide cover, a guide pipe is fixedly mounted on one end of the bellows, circular holes are equidistantly opened on one end surface of the guide pipe, and a cleaning structure is mounted on one end of the cooling fan.

[0007] Preferably, a bent pipe is installed between the bellows and the guide pipe, both ends of the bent pipe are respectively clamped and connected between the bellows and one end of the guide pipe, an external thread is provided on the outside of the guide pipe, and a ring is connected to the outside of the guide pipe through the external thread.

[0008] Preferably, one side of the outer surface of the curved pipe and the bottom of the outer surface of the guide pipe are both clamped with clamping rings, and the clamping rings are installed inside the cabinet by screws.

[0009] Preferably, the cleaning structure includes a return-shaped frame fixedly mounted on one end of the cooling fan, a filter screen being snap-fitted and mounted at a middle position of an inner wall of the return-shaped frame, an inclined plate being snap-fitted and mounted equidistantly at one end of the filter screen inside the return-shaped frame, and an L-shaped rod being slidably connected at a position between the filter screen and the inclined plate inside the return-shaped frame.

[0010] Preferably, spring rods are symmetrically embedded and installed on both sides of the bottom end of the L-shaped rod, a rectangular bar is fixedly installed on one end of the spring rod, and the rectangular bar and the inner wall of the return frame are integrally formed.

[0011] Preferably, a pull rod is integrally formed in the middle of one end of the L-shaped rod and the shape of the pull rod is L-shaped, and the pull rod is located between the bottom of the lowest inclined plate and the bottom end of the inner wall of the return frame.

[0012] The beneficial effects of the utility model are:

[0013] (1) It can make the inside of the cabinet evenly ventilated, increase the ventilation effect, make the air flow more smoothly inside the cabinet, and promote air circulation, reduce pollutants and odors in the air, thereby improving the air quality inside the cabinet, changing the problem of uneven ventilation inside the cabinet and uneven heat dissipation of electronic components inside the cabinet caused by only one blowing port in the prior art;

[0014] (2) The filter can be easily cleaned, which reduces the difficulty of cleaning the filter, thereby ensuring the cleanliness of the filter surface. This changes the method in the prior art that the filter needs to be disassembled for cleaning. This method is simple to operate and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a structural schematic diagram of a high and low voltage distribution cabinet ventilation device;

[0016] Figure 2 Shown is a schematic diagram of the installation structure of the cooling fan;

[0017] Figure 3 What is shown is the schematic diagram of the installation structure of the air deflector;

[0018] Figure 4 What is shown is a schematic diagram of the installation structure of the blowing structure;

[0019] Figure 5 Shown is a schematic diagram of the cleaning structure installation structure.

[0020] In the figure: 1. Cabinet; 2. Air outlet; 3. Cooling fan; 4. Air guide cover;

[0021] 5. Blowing structure; 51. Bellows; 52. Bend pipe; 53. Flow guide pipe; 54. Round hole; 55. Round ring; 56. Snap ring;

[0022] 6. Cleaning structure; 61. Retractable frame; 62. Inclined plate; 63. Filter screen; 64. L-shaped rod; 65. Spring rod; 66. Rectangular bar; 67. Pull rod. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0024] Example 1

[0025] The utility model provides a high and low voltage distribution cabinet ventilation device, such as Figure 1-5 As shown, it comprises: a cabinet 1, one end of the cabinet 1 is provided with air outlets 2 at equal distances, a cooling fan 3 is clamped and installed on the top of the inner wall of the cabinet 1, one end of the cooling fan 3 is provided with a guide cover 4, and one end of the guide cover 4 is provided with a blowing structure 5;

[0026] The blowing structure 5 includes a bellows 51 fixedly mounted on one end of the air guide cover 4, a guide pipe 53 is fixedly mounted on one end of the bellows 51, and circular holes 54 are equidistantly opened on one end surface of the guide pipe 53, and a cleaning structure 6 is mounted on one end of the cooling fan 3;

[0027] The air sucked by the cooling fan 3 enters into the bellows 51 along the air guide cover 4 , and then enters into the air guide pipe 53 along the bellows 51 , and finally blows evenly into the cabinet 1 along the circular hole 54 of the air guide pipe 53 .

[0028] like Figure 3 and Figure 4 , an elbow 52 is installed between the bellows 51 and the guide pipe 53, and the two ends of the elbow 52 are respectively connected between the bellows 51 and one end of the guide pipe 53, and the elbow 52 is used for connecting the guide pipe 53 and the bellows 51, changing the connection difficulty, and an external thread is provided on the outside of the guide pipe 53, and a ring 55 is connected to the outside of the guide pipe 53 through the external thread. Under the action of the external thread, the ring 55 can rotate and move along the outside of the guide pipe 53. Since the circular hole 54 is blocked after the circular ring 55 moves, the inside of the circular ring 55 that is not used can continue to vent air. A clamping ring 56 is installed on one side of the outer surface of the elbow 52 and the bottom of the outer surface of the guide pipe 53, and the clamping ring 56 is installed inside the cabinet 1 by screws. The clamping ring 56 is used to fix the guide pipe 53 and the elbow 52, ​​and the problem of displacement caused by placement occurs;

[0029] Personnel use the curved pipe 52 to install the bellows 51 and the guide pipe 53, and fix the arc through the clamp ring 56 and the cabinet 1 with screws. Finally, the ring 55 is rotated to block the inside of the circular hole 54 that is not in use, thereby changing the flow rate of the gas inside the other circular holes 54, thereby increasing the ventilation effect inside the cabinet 1.

[0030] like Figure 3 and Figure 5The cleaning structure 6 includes a return frame 61 fixedly installed at one end of the cooling fan 3, a filter screen 63 is clamped and installed at the middle position of the inner wall of the return frame 61, and the filter screen 63 is used to filter the gas. An inclined plate 62 is equidistantly clamped and installed at one end of the filter screen 63 inside the return frame 61. The inclined plate 62 prevents larger floating objects from entering the surface of the filter screen 63. An L-shaped rod 64 is slidably connected to the position between the filter screen 63 and the inclined plate 62 inside the return frame 61. The bottom ends of the L-shaped rod 64 are symmetrically embedded in the mounting holes. A spring rod 65 is installed, and the spring rod 65 can drive the L-shaped rod 64 to reset, thereby changing the difficulty of resetting the L-shaped rod 64. A rectangular bar 66 is fixedly installed at one end of the spring rod 65, and the rectangular bar 66 and the inner wall of the return frame 61 are integrally formed. A pull rod 67 is integrally formed in the middle of one end of the L-shaped rod 64, and the shape of the pull rod 67 is L-shaped. The pull rod 67 is located between the bottom of the lowest inclined plate 62 and the bottom end of the inner wall of the return frame 61. The pull rod 67 can facilitate pulling the L-shaped rod 64 to move, thereby changing the difficulty of displacement of the L-shaped rod 64.

[0031] A person pulls the pull rod 67, and the pull rod 67 drives the L-shaped rod 64 to move. When the L-shaped rod 64 moves, it drives the spring rod 65 to be compressed. When the pull rod 67 is released, the tension of the spring rod 65 drives the L-shaped rod 64 to move. When the L-shaped rod 64 moves, it collides with one end surface of the filter 63, causing the filter 63 to swing, thereby causing the dust on the surface of the filter 63 to separate from the filter 63.

[0032] Working principle: During the actual use of the device, personnel install the cooling fan 3 and the cabinet 1, and then fix the guide pipe 53 and the elbow 52 inside the cabinet 1 through the clamp ring 56. Under the action of the guide pipe 53, the guide pipe 53 and the elbow 52 can be displaced forward and backward inside the cabinet 1, so that the installation position of the guide pipe 53 and the elbow 52 is more reasonable. Then the personnel rotate the ring 55, and the ring 55 rotates and moves along the outside of the guide pipe 53. After the movement, the ring 55 blocks the circular hole 54, changing the number of the air outlet circular holes 54, thereby accelerating the gas flow speed inside the remaining circular holes 54, further improving the ventilation effect inside the cabinet 1;

[0033] Then the personnel starts the cooling fan 3. When the cooling fan 3 is running, the external air is driven to enter the air guide cover 4 along the cooling fan 3. The air inside the air guide cover 4 enters the air guide pipe 53 along the bellows 51 and the curved pipe 52, and is discharged along the unblocked circular hole 54 on the outside of the air guide pipe 53. The discharged air blows the electrical components inside the cabinet 1, and the blown air is discharged along the air outlet 2.

[0034] Then the personnel pulls the L-shaped rod 64 through the pull rod 67 to move, and the movement of the L-shaped rod 64 drives the spring rod 65 to move. Since one end of the spring rod 65 is fixed by the rectangular bar 66, the spring rod 65 can only be compressed at this time, and when the pull rod 67 is released, the tension of the spring rod 65 drives the L-shaped rod 64 to move. When the L-shaped rod 64 moves, it collides with the filter screen 63, causing the filter screen 63 to swing, so that the dirt remaining inside the filter screen 63 falls off, thereby achieving the purpose of cleaning the filter screen 63.

[0035] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A high and low voltage distribution cabinet ventilation device, characterized in that: include: A cabinet (1), wherein one end of the cabinet (1) is provided with air outlets (2) at equal intervals, a cooling fan (3) is mounted on the top of the inner wall of the cabinet (1), one end of the cooling fan (3) is mounted with a guide cover (4), and one end of the guide cover (4) is mounted with a blowing structure (5); The blowing structure (5) comprises a bellows (51) fixedly mounted on one end of the air guide cover (4); a guide pipe (53) is fixedly mounted on one end of the bellows (51); circular holes (54) are equidistantly formed on one end surface of the guide pipe (53); and a cleaning structure (6) is mounted on one end of the heat dissipation fan (3).

2. A high and low voltage distribution cabinet ventilation device according to claim 1, characterized in that: A bent pipe (52) is installed between the bellows (51) and the flow guide pipe (53); two ends of the bent pipe (52) are respectively connected between the bellows (51) and one end of the flow guide pipe (53); an external thread is provided on the outside of the flow guide pipe (53); and a ring (55) is connected to the outside of the flow guide pipe (53) via the external thread.

3. A high and low voltage distribution cabinet ventilation device according to claim 2, characterized in that: A clamping ring (56) is mounted on one side of the outer surface of the curved pipe (52) and the bottom of the outer surface of the flow guide pipe (53), and the clamping ring (56) is mounted inside the cabinet (1) by means of screws.

4. A high and low voltage distribution cabinet ventilation device according to claim 1, characterized in that: The cleaning structure (6) comprises a return frame (61) fixedly mounted on one end of the cooling fan (3); a filter screen (63) is snap-fitted and mounted at a middle position of an inner wall of the return frame (61); an inclined plate (62) is snap-fitted and mounted equidistantly at a position at one end of the filter screen (63) inside the return frame (61); and an L-shaped rod (64) is slidably connected at a position between the filter screen (63) and the inclined plate (62) inside the return frame (61).

5. A high and low voltage distribution cabinet ventilation device according to claim 4, characterized in that: Spring rods (65) are symmetrically embedded and installed on both sides of the bottom end of the L-shaped rod (64), and a rectangular bar (66) is fixedly installed on one end of the spring rod (65), and the rectangular bar (66) and the inner wall of the return frame (61) are integrally formed.

6. A high and low voltage distribution cabinet ventilation device according to claim 4, characterized in that: A pull rod (67) is integrally formed in the middle of one end of the L-shaped rod (64), and the pull rod (67) is L-shaped. The pull rod (67) is located between the bottom of the bottommost inclined plate (62) and the bottom end of the inner wall of the return frame (61).

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