CN211208961U - A low voltage distribution box - Google Patents

Abstract

The utility model discloses a low-voltage power distribution box, comprising a cabinet body, a heat dissipation mechanism is arranged on the top of the inner wall of the cabinet body, an air inlet communicated with the interior is arranged on the side wall surface of the cabinet body, and the heat dissipation mechanism includes parallel and Multiple groups of heat-conducting plates arranged vertically, installation grooves are arranged in the middle of the heat-conducting plates, turbine blades are rotated in the installation grooves, the axis of the turbine blades is vertical, and a motor is arranged at the axis position of the turbine blades, An air outlet is set on the surface of the cabinet corresponding to the end of the heat-conducting plate, and the ends of the heat-conducting plate are parallel with multiple sets of horizontally arranged air guide plates. The air guide plates are memory metal plates. When the value is fixed, the air deflector is bent so that the air outlet is in a smooth state. The low-voltage distribution box can adjust the air outlet according to the internal temperature of the cabinet. While ensuring the heat dissipation capacity, the sealing performance of the cabinet can be improved to avoid dust and water vapor. Enter to ensure the stability of electrical components.

Description

A low voltage distribution box

technical field

The utility model relates to the technical field of power distribution cabinets, in particular to a low-voltage power distribution box.

Background technique

The power distribution cabinet has the advantages of small size, easy installation and stable performance, so it is widely used in power layout, but the existing power distribution cabinet has many internal electrical components due to its highly integrated characteristics. If the heat dissipation is not timely, it will cause a fire in the power distribution cabinet, resulting in huge economic losses. Therefore, most of the power distribution cabinets are integrated with heat dissipation mechanisms, but most of the existing power distribution cabinets are Simple fans dissipate heat, and the cooling holes are always open, resulting in insufficient sealing inside the power distribution cabinet, so that dust and water vapor can easily enter the inside of the power distribution cabinet, causing internal dirt, affecting the working stability of electrical components, and easily causing power short circuits, etc. question.

Utility model content

The technical problem to be solved by the utility model is to overcome the existing defects and provide a low-voltage power distribution box, which can adjust the air outlet according to the internal temperature of the cabinet, improve the sealing performance of the cabinet while ensuring the heat dissipation capacity, and avoid The entry of dust and water vapor ensures the working stability of the electrical components and can effectively solve the problems in the background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a low-voltage power distribution box, comprising a cabinet body, a heat dissipation mechanism is arranged on the top of the inner wall of the cabinet body, and an air inlet communicated with the interior is arranged on the side wall surface of the cabinet body , the heat dissipation mechanism includes a plurality of groups of heat-conducting plates arranged in parallel and vertically, a mounting groove is arranged in the middle of the heat-conducting plate, a turbine fan blade is rotated in the mounting groove, the axis of the turbine fan blade is vertical, and the turbine A motor is set at the axial position of the fan blade, an air outlet is set on the surface of the cabinet corresponding to the end of the heat-conducting plate, and the ends of the heat-conducting plate are parallel with a plurality of sets of horizontally arranged wind guide plates, and the wind guide plates are memory metal plates , When the temperature of the memory metal plate exceeds the set value, the air deflector is bent so that the air outlet is in a smooth state. When the temperature of the memory metal plate is lower than the set value, the air deflector is in a flat state and the air outlet is closed.

As a preferred technical solution of the present invention, the air inlet is located above the side wall of the cabinet body, and an air inlet duct connected with the air inlet is arranged inside the cabinet body, and the other end of the air inlet duct is connected to the inner side of the cabinet body. The bottom end is connected. Through the periscope design, the air inlet is located at a high position to avoid the ground water entering the cabinet through the air inlet when the low-voltage power distribution cabinet is used outdoors, and the air inlet point inside the cabinet is avoided. It is arranged at the bottom of the cabinet, so that the external cold air can act on the components inside the cabinet from bottom to top from the bottom of the cabinet, so as to ensure that the internal components can be in contact with the external cold air and ensure the heat dissipation effect.

As a preferred technical solution of the present invention, an air filter element is arranged inside the air inlet duct to filter the air entering the cabinet to prevent dust from entering the inside of the cabinet.

As a preferred technical solution of the present invention, a flap is provided outside the air outlet of the cabinet body, the upper end of the flap is connected with the cabinet body through hinges, and a spring is arranged between the inner wall of the flap and the cabinet body , the surface of the cabinet above the air outlet is provided with a vertically arranged push-pull electromagnet, the movable end of the push-pull electromagnet is provided with a rotating roller, and the outer circumferential surface of the roller is tangent to the outer wall of the flap. The double action of the push-pull electromagnet and the spring controls the turning angle of the flap, so as to adjust the external force on the opening and closing of the air outlet, and realize the switching of the internal and external circulation of the air inside the cabinet.

As a preferred technical solution of the present invention, a temperature sensor and a controller are arranged inside the cabinet, the temperature sensor and the push-pull electromagnet are both electrically connected to the controller, and the temperature inside the cabinet is detected by the temperature sensor , so as to control the working state of the push-pull electromagnet, so as to control the flip angle of the flap.

Compared with the prior art, the beneficial effects of the present utility model are: the low-voltage power distribution box adopts the turbine fan blades to form a circulating air flow inside the cabinet body, air-cools the internal components and dissipates heat, and at the same time adopts a heat-conducting plate to dissipate the heat. It is transmitted to the air outlet, and the air outlet is closed and guided by an air guide plate, and the air guide plate is made of a memory metal plate. When the temperature of the heat conduction plate exceeds the set value, the memory metal plate is bent, so that the air outlet is in the Open state, so as to realize the external discharge of internal air flow and realize heat dissipation. When the temperature of the heat conduction plate is lower than the set value, the memory metal plate returns to its original state, that is, the flat state, and the air outlet is sealed to prevent external dust and water vapor from entering the cabinet through the air outlet. inside the body.

Description of drawings

Fig. 1 is the structural representation of the utility model;

2 is a sectional view of the utility model;

3 is a schematic diagram of the heat dissipation mechanism of the present invention;

Figure 4 is an enlarged view of the utility model A.

In the picture: 1 cabinet, 101 air inlet duct, 102 air inlet, 103 air filter element, 2 cooling mechanism, 201 turbo fan blade, 202 motor, 203 wind deflector, 204 heat conduction plate, 3 sealing mechanism, 301 push-pull electromagnet , 302 rollers, 303 springs, 304 flaps, 305 temperature sensors.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-4, the present utility model provides a technical solution: a low-voltage power distribution box, comprising a cabinet body 1, a heat dissipation mechanism 2 is arranged on the top of the inner wall of the cabinet body 1, and a surface of the side wall of the cabinet body 1 is arranged to communicate with the interior The air inlet 102, the heat dissipation mechanism 2 includes a plurality of sets of heat-conducting plates 204 arranged in parallel and vertically. The heat-conducting plates 204 are provided with installation slots in the middle, and the turbine blades 201 are rotated in the installation slots. The axis of the turbine blades 201 is vertical. The motor 202 is set at the axial position of the blade 201 , the air outlet is set on the surface of the cabinet 1 corresponding to the end of the heat-conducting plate 204 , and the ends of the heat-conducting plate 204 are parallel with multiple sets of horizontally arranged wind guide plates 203 , and the wind guide plates 203 are memory metal plates , When the temperature of the memory metal plate exceeds the set value, the air deflector 203 is bent so that the air outlet is in a smooth state; when the temperature of the memory metal plate is lower than the set value, the air deflector 203 is in a flat state, closing the air outlet.

The motor 202 drives the turbine blades 201 to rotate, and drives the air flow inside the cabinet 1 to flow through the gaps between the heat-conducting plates 204 to exchange heat with the heat-conducting plates 204, thereby conducting the heat to the air-guiding plate 203, thereby promoting the memory metal plate according to the The temperature adjusts its own shape.

The air inlet 102 is located above the side wall of the cabinet 1, and the inside of the cabinet 1 is provided with an air inlet duct 101 that communicates with the air inlet 102. The other end of the air inlet 101 is communicated with the bottom end inside the cabinet 1. The design makes the air inlet 102 at a high position to avoid the ground water entering the inside of the cabinet 1 through the air inlet 102 when the low-voltage power distribution cabinet is used outdoors, and the air inlet point inside the cabinet 1 is arranged in the cabinet. 1 bottom, so that the external cold air can act on the components inside the cabinet 1 from the bottom to the top from the bottom of the cabinet 1, so as to ensure that the internal components can be in contact with the external cold air and ensure the heat dissipation effect.

An air filter element 103 is arranged inside the air inlet duct 101 to filter the air entering the cabinet 1 to prevent dust from entering the inside of the cabinet 1 .

A flap 304 is provided outside the air outlet of the cabinet 1. The upper end of the flap 304 is connected with the cabinet 1 through hinges. A spring 303 is arranged between the inner wall of the flap 304 and the cabinet 1, and the surface of the cabinet 1 above the air outlet is provided The push-pull electromagnet 301 is vertically arranged. The movable end of the push-pull electromagnet 301 is provided with a rotating roller 302. The outer circumferential surface of the roller 302 is tangent to the outer wall of the flap 304. It controls the turning angle of the flap 304, so as to adjust the opening and closing degree of the air outlet by external force, so as to realize the switching of the internal and external circulation of the air inside the cabinet 1.

A temperature sensor 305 and a controller are arranged inside the cabinet 1, and both the temperature sensor 305 and the push-pull electromagnet 301 are electrically connected to the controller. working state, so as to control the turning angle of the turning plate 304 .

Both the temperature sensor 305 and the push-pull electromagnet 301 are of common types in the prior art, and the circuit layout and control method thereof are of common solutions in the prior art.

The air guide plate 203 is made of a memory alloy with two-way memory effect, such as nickel-titanium alloy, which restores the shape of the high-temperature phase when heated, and can restore the shape of the low-temperature phase when cooled.

In use: when the temperature sensor 305 detects the internal temperature of the cabinet 1, and the detected value is lower than the set value, the push-pull electromagnet 301 is in the extended state, and the roller 302 presses the outer wall of the flap 304, and the spring 303 is pulled Compression, so that the flap 304 closes the air outlet, so that the air inside the cabinet 1 is in a state of internal circulation, so that the heat inside the cabinet 1 is uniform, when the temperature sensor 305 detects that the temperature exceeds the set value, the push-pull electromagnet 301 moves, the roller 302 moves up, and the flap 304 is turned over under the action of the spring 303, so that the air outlet is in an open state, and by controlling the action amount of the push-pull electromagnet 301, the flip angle of the flap 304 is controlled, The opening size of the air outlet is controlled. At this time, the air guide plate 203 is deformed by the heat of the heat conduction plate 204, and is in the air guide state, so that the internal air flow is discharged to the outside, and the internal temperature is discharged, so as to have a cooling effect.

When the temperature is lowered to the set temperature, the push-pull electromagnet 301 drives the roller 302 to reset, thereby resetting the flap 304 and closing the air outlet, and the temperature of the heat conduction plate 204 drops at this time, so that the shape of the air guide plate 203 is restored, and the outlet The tuyere is closed and plays a sealing role.

The utility model adopts the turbine fan blades 201 to form a circulating air flow inside the cabinet 1, and conducts air cooling and heat dissipation for the internal components. 203 is closed and air-guiding, and the air-guiding plate 203 is made of a memory metal plate. When the temperature of the heat-conducting plate 204 exceeds the set value, the memory metal plate is bent, so that the air outlet is in an open state, so as to realize the discharge of the internal air flow. To achieve heat dissipation, when the temperature of the heat conduction plate 204 is lower than the set value, the memory metal plate returns to its original state, that is, the flat state, and seals the air outlet to prevent external dust and water vapor from entering the cabinet through the air outlet.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. A low-voltage power distribution box, comprising a cabinet body (1), characterized in that: a heat dissipation mechanism (2) is provided on the top of the inner wall of the cabinet body (1), and a side wall surface of the cabinet body (1) is provided with a An air inlet (102) communicated inside, the heat dissipation mechanism (2) includes a plurality of sets of heat-conducting plates (204) arranged in parallel and vertically, a mounting groove is arranged in the middle of the heat-conducting plates (204), and a rotating arrangement is arranged in the mounting groove A turbo fan blade (201), the axis of the turbo fan blade (201) is vertical, a motor (202) is set at the axis position of the turbo fan blade (201), and a cabinet corresponding to the end of the heat conducting plate (204) is provided (1) An air outlet is provided on the surface, and the ends of the heat-conducting plate (204) are arranged in parallel with multiple sets of horizontally arranged air-guiding plates (203), and the air-guiding plates (203) are memory metal plates. When the set value is exceeded, the air deflector (203) is bent so that the air outlet is in a smooth state. When the temperature of the memory metal plate is lower than the set value, the air deflector (203) is in a flat state and closes the air outlet. 2. The low-voltage power distribution box according to claim 1, characterized in that: the air inlet (102) is located above the side wall of the cabinet (1), and the inside of the cabinet (1) is provided with the air inlet (102) A connected air inlet duct (101), the other end of the air inlet duct (101) is communicated with the bottom end inside the cabinet (1). 3. The low-voltage distribution box according to claim 2, characterized in that: an air filter element (103) is arranged inside the air inlet duct (101). 4. The low-voltage power distribution box according to claim 1, characterized in that a flap (304) is provided outside the air outlet of the cabinet (1), and the upper end of the flap (304) is connected to the cabinet (1). ) are connected by hinge rotation, a spring (303) is arranged between the inner wall of the flap (304) and the cabinet (1), and a vertically arranged push-pull electromagnet is arranged on the surface of the cabinet (1) above the air outlet (301), the movable end of the push-pull electromagnet (301) is provided with a rotating roller (302), and the outer circumferential surface of the roller (302) is tangent to the outer wall of the flap (304). 5. The low-voltage power distribution box according to claim 4, characterized in that: a temperature sensor (305) and a controller are arranged inside the cabinet (1), the temperature sensor (305) and the push-pull electromagnet (301) ) are electrically connected to the controller.

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