CN114364233A

CN114364233A - Anti-condensation electric cabinet

Info

Publication number: CN114364233A
Application number: CN202210126053.2A
Authority: CN
Inventors: 赵东华; 倪荣妹
Original assignee: Nanjing Jiuding Environmental Technology Co ltd
Current assignee: Nanjing Jiuding Environmental Technology Co ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-04-15

Abstract

The invention discloses an anti-condensation electric cabinet which is good in heat dissipation and free of condensation. The anti-condensation electric cabinet comprises a box body (1), wherein an electric element which generates heat during operation is arranged in the box body (1); the heat pipe heat exchanger also comprises a heat pipe (3) and a water-cooled heat exchanger (5); a water inlet pipe (7) and a water outlet pipe (6) of the water-cooled heat exchanger (5) are respectively connected with a water supply pipe and a water outlet pipe of the cooling tower; one end (2) of the heat pipe (3) is in close contact with the box body (1), and the other end (4) of the heat pipe (3) is in close contact with the water-cooled heat exchanger (5).

Description

Anti-condensation electric cabinet

Technical Field

The invention belongs to the technical field of electric appliance boxes, and particularly relates to a condensation-preventing electric cabinet which is good in heat dissipation and free of condensation.

Background

At present, heat dissipation of small-space and closed-space electrical elements is a hot topic, and meanwhile condensation prevention of the small-space and closed-space electrical elements is difficult to lead out.

At present, most of electrical equipment adopts a method of combining a humidity controller and a heater to solve the problem of equipment moisture in a cabinet. However, under the conditions of limited space, sealing or extreme temperature, the heater only hydrates and separates water from local humid air around, and water molecules are cooled around the box body or on electrical equipment after being heated and raised to generate condensation, so that the condensation prevention of the electric box is not really solved; when the electrical components need to dissipate heat, the anti-condensation device is especially unwieldy. The heater and the dehumidifying device can not effectively reduce the humidity inside the cabinet, the electrical elements can not meet the requirements when heat dissipation is needed, and the device has the advantages of large occupied space, energy consumption, complex pipeline and inapplicable small sealed space.

Therefore, the technical problem that current electric cabinets exist is: untimely heat dissipation, poor condensation prevention effect and complex structure.

Disclosure of Invention

The invention aims to provide an anti-condensation electric cabinet which is good in heat dissipation and free of condensation.

The technical solution for realizing the purpose of the invention is as follows:

an anti-condensation electric cabinet comprises a box body, wherein an electric element which generates heat during operation is arranged in the box body; the heat pipe and the water-cooled heat exchanger are also included; the water inlet pipe and the water outlet pipe of the water-cooled heat exchanger are respectively connected with the water supply pipe and the water outlet pipe of the cooling tower; one end of the heat pipe is in close contact with the box body, and the other end of the heat pipe is in close contact with the water-cooled heat exchanger.

Compared with the prior art, the invention has the following remarkable advantages:

1. the heat dissipation is good: the invention adopts the heat pipe heat conduction technology, when the electric cabinet needs to dissipate heat during operation, the heat pipe can carry the heat of hot air on the surface of the electric cabinet and around to the cooling tower to dissipate, the heat dissipation effect is good, and the safe operation of the equipment is ensured.

2. Non-condensation: when the electric elements in the electric cabinet do not work, the temperature of the box body is reduced. At this moment, the heat pipe absorbs external heat to heat the surface of the electric cabinet and the surrounding air, and the moisture in the cold air is prevented from being condensed on the surface of the electric cabinet and internal components.

The invention is described in further detail below with reference to the figures and the detailed description.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of the anti-condensation electric cabinet of the invention.

In the figure, 1, an electric cabinet body, 2, one end of a heat pipe, 3 heat pipes, 4 other ends of the heat pipes, 5 water-cooled heat exchangers, 6 water outlet pipes and 7 water inlet pipes.

Detailed Description

As shown in fig. 1, the anti-condensation electric cabinet of the present invention includes a box body 1, and an electric component (not shown in the figure) which generates heat during operation is disposed in the box body 1.

The heat pipe 3 and the water-cooled heat exchanger 5 are also included;

a water inlet pipe 7 and a water outlet pipe 6 of the water-cooled heat exchanger 5 are respectively connected with the cooling tower;

one end 2 of the heat pipe 3 is in close contact with a heating element in the box body 1, and the other end 4 of the heat pipe 3 is in close contact with the water-cooling heat exchanger.

Preferably, the heat exchanger 5 is a plate heat exchanger.

The plate heat exchanger can greatly reduce the volume of the heat exchanger and enhance the heat exchange effect.

Preferably, one end 2 of the heat pipe 3, which is in close contact with the box 1, is closely attached along the outer surface of the box and close to the heat generating part of the electric element in the box.

As an improvement, one end 2 of the heat pipe 3, which is in close contact with the box body 1, is provided with a fin, and the fin is tightly attached to the outer surface of the box body.

Preferably, one end 4 of the heat pipe 3, which is in close contact with the water-cooled heat exchanger 5, is tightly wound on the water outlet pipe 6 of the water-cooled heat exchanger 5.

As an improvement, one end 4 of the heat pipe 3, which is in close contact with the water-cooled heat exchanger 5, is wound on a water outlet pipe 6 of the water-cooled heat exchanger 5 for multiple circles.

As a further improvement, an insulating layer is arranged on the outer side of the pipe body 6 between one end 2 of the heat pipe 3, which is in close contact with the box body 1, and one end 4 of the heat pipe, which is in close contact with the water-cooled heat exchanger 5.

The device adopts the heat pipe heat conduction technology, and when the electronic box temperature was very low, the hot pipe absorbed external heat and heated electronic box surface and air on every side and prevented that moisture in the cold air from condensing on electronic box surface and inside components and parts, and when the electric cabinet was moved the period and need dispel the heat simultaneously, the heat pipe can take the heat of absorbing electronic box surface and hot air on every side to the cooling tower and dispel, guarantees the safe operation of equipment.

The heat pipe can be made of aluminum, red copper, stainless steel and the like, and the heat conducting performance of different materials is different. Because the surface material of the cold and hot source is stainless steel, a heat pipe with a stainless steel pipe shell filled with water (or acetone) is selected.

The equipment is a sealed box body, the space around a cold and heat source is small, the layout is complex, and the diversity of the heat pipe structure can meet the requirements of condensation prevention and heat dissipation of the electric appliance box.

When the equipment is in a shutdown state, the surface temperature of the electrical element is quickly reduced, and the air temperature around the electric box in the closed cavity is higher because of residual heat remained by various heat dissipation when the equipment runs. The hot air meets the cold surface and is easy to generate condensation, and the condensed water not only reduces the service life of the electrical appliance element, but also has potential safety hazard.

How to ensure that the surface temperature of the electrical components is consistent with the temperature of the ambient air or that the surface temperature of the electrical components is higher than the ambient air in the shutdown state? The design utilizes the high-efficiency heat transfer performance of the heat pipe to transfer the heat of cooling water (the water temperature is about 30 ℃) to an electrical element, and ensures that the surface temperature and the temperature of the surrounding close range are higher than the air temperature in the cavity. It is important to ensure that the heat of the cooling water is smoothly and efficiently transferred to the electric element, and firstly, a heat pipe with good performance is selected, and secondly, the thermal resistance in the heat transfer process is reduced.

Because the space for the cold and heat sources is limited, the size of the heat pipe is limited, and it is important to reduce the thermal resistance between heat transfers.

The condensation end of the heat pipe is tightly attached to the electrical element as much as possible. A plurality of fixing holes are formed in the electric box back plate of the electric appliance element, and four corners of a fin at the condensation end of the heat pipe are required to be provided with bolt holes and fastened with the bolt holes in the electric box back plate through screws, so that the thermal resistance between the heat pipe and the electric box can be reduced as much as possible.

Because the water pipe at the hot end is cylindrical, the heat pipe needs to be bent into an arc shape,

for larger contact area, the hot end can be wound around the water pipe for a plurality of turns,

in order to reduce the thermal resistance between the spiral pipeline and the outer surface of the cooling water pipe and ensure that the heat of the cooling water is efficiently absorbed by the heat pipe, the contact surface of the spiral heat pipe needs to be coated with heat-conducting silica gel, and a fin at the hot end of the heat pipe is tightened by a bolt, so that the engaging force between the heat pipe and the water pipe is increased.

The heat of the cooling water is continuously transmitted to the evaporation end of the heat pipe through convection and heat conduction, the heat pipe medium absorbs heat and evaporates to the condensation end for condensation and heat dissipation, the electric appliance element is tightly attached to the condensation end of the heat pipe, and the condensation end can smoothly and efficiently transmit the heat to the electric appliance element. The whole heating process is efficient and energy-saving.

On the contrary, when the equipment runs, a large amount of heat dissipated by the electrical component is carried to the heat pipe condensation end (the evaporation end of the heat pipe during condensation prevention) by the heat pipe medium through the heat pipe evaporation end (the condensation end of the heat pipe during condensation prevention), the condensation end transfers the heat to the cooling water, and the cooling water carries the heat to the cooling tower to dissipate.

The device has the advantages of small volume, energy conservation, environmental protection, convenient installation, reliable operation, various functions and the like, and is an effective device for preventing condensation of electrical equipment.

Claims

1. An anti-condensation electric cabinet comprises a box body (1), wherein an electric element which generates heat during operation is arranged in the box body (1); the method is characterized in that:

the heat pipe heat exchanger also comprises a heat pipe (3) and a water-cooled heat exchanger (5);

a water inlet pipe (7) and a water outlet pipe (6) of the water-cooled heat exchanger (5) are respectively connected with a water supply pipe and a water outlet pipe of the cooling tower;

one end (2) of the heat pipe (3) is in close contact with the box body (1), and the other end (4) of the heat pipe (3) is in close contact with the water-cooled heat exchanger (5).

2. The anti-condensation electric cabinet according to claim 1, characterized in that:

the water-cooled heat exchanger (5) is a plate heat exchanger.

3. The anti-condensation electric cabinet according to claim 1, characterized in that:

one end (2) of the heat pipe (3) which is tightly contacted with the box body (1) is tightly attached along the outer surface of the box body and is close to the heating part of the electric element in the box.

4. The anti-condensation electric cabinet according to claim 3, characterized in that:

and fins are arranged at one end (2) of the heat pipe (3), which is in close contact with the box body (1), and are tightly attached to the outer surface of the box body.

5. The anti-condensation electric cabinet according to claim 1, characterized in that:

one end (4) of the heat pipe (3) which is in close contact with the water-cooled heat exchanger (5) is tightly wound on a water outlet pipe (6) of the water-cooled heat exchanger (5).

6. The anti-condensation electric cabinet according to claim 5, characterized in that:

one end (4) of the heat pipe (3) which is in close contact with the water-cooled heat exchanger (5) is wound on a water outlet pipe (6) of the water-cooled heat exchanger (5) for a plurality of circles.

7. The anti-condensation electric cabinet according to one of claims 1 to 6, characterized in that:

and a heat insulation layer is arranged on the outer side of the pipe body (6) between one end (3) of the heat pipe (4) in close contact with the box body (1) and one end (4) of the heat pipe in close contact with the water-cooled heat exchanger (5).