Low-noise heat dissipation power distribution cabinet

Abstract

The utility model relates to the technical field of power distribution cabinets, in particular to a low-noise heat dissipation power distribution cabinet which comprises a cabinet body shell, a power distribution inner chamber is fixedly arranged in the cabinet body shell, electrical accessories are installed in the power distribution inner chamber, a gas cavity is arranged in a shell body of the cabinet body shell, and inert gas is filled in the gas cavity. A gas space is arranged between the cabinet body shell and the power distribution inner chamber in a spaced mode, at least one cooling assembly is arranged in the gas space, at least one fan is arranged in the gas space, and the fan is located above or below the cooling assembly. The number of the fans is at least two, the fans are evenly arranged in the circumferential direction of the air space, and the blowing direction of the fans enables cold air to flow in the air space clockwise or anticlockwise in a one-way mode. According to the utility model, the technical problems of efficient cooling, heat dissipation and noise reduction of the power distribution cabinet are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution cabinets, in particular to a low-noise heat dissipation power distribution cabinet. Background Art

[0002] A power distribution cabinet is an electrical device used to distribute electrical energy and is widely used in industrial, commercial and residential buildings. It usually contains a series of switchgear, protection devices and measuring instruments to control and monitor the operation of the power system. The power distribution cabinet generates a lot of heat during operation and produces working noise due to the operation of the internal electrical accessories, which affects the surrounding working environment. Existing power distribution cabinets usually use duct cooling or water cooling, but either the heat dissipation efficiency is not high or the heat dissipation equipment has too high power, which generates excess noise.

[0003] The Chinese utility model patent with the name of "A Silent Heat Dissipation Power Distribution Cabinet" and the publication number CN220710964U, which has been published, includes a cabinet, a support foot is fixed at the bottom of the cabinet, cable holes are arranged on both sides of the cabinet, a heat dissipation structure is arranged inside the cabinet on both sides, a cabinet door is installed on the cabinet, and the heat dissipation structure includes a fan, ventilation holes, heat-conducting fins, heat-conducting coils, partitions and connecting ports. The ventilation holes are arranged on both sides of the cabinet, and a fan is installed inside the ventilation holes. The device guides tap water into the heat-conducting coil, so that it absorbs heat in the air through the heat-conducting coil and the heat-conducting fins, reduces the temperature and dissipates heat, and by cooling the air entering the device, the fan can meet the heat dissipation requirements at a low speed, thereby reducing the generation of noise.

[0004] However, the heat transfer coil is located between the cabinet and the external environment. When cooling and absorbing heat, it will first absorb the heat of the external air and then cool it down. Then the cooled air will continue to absorb the heat generated by the circuit breaker in the cabinet when it is working. At this time, the temperature of the cooling air entering the cabinet has risen for a period of time, making the overall cooling efficiency relatively low. Utility Model Content

[0005] The purpose of the present application is to provide a low-noise heat dissipation distribution cabinet, which solves the technical problems of efficient cooling and heat dissipation of the distribution cabinet and reducing noise.

[0006] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0007] A low-noise heat dissipation power distribution cabinet comprises a cabinet shell, wherein a power distribution inner chamber is fixedly arranged inside the cabinet shell, electrical accessories are installed inside the power distribution inner chamber, and an air cavity is arranged in the shell of the cabinet shell, and the air cavity is filled with inert gas.

[0008] Preferably, a gas space is provided between the cabinet shell and the power distribution inner chamber, at least one cooling component is provided in the gas space, at least one fan is provided in the gas space, and the fan is located above or below the cooling component.

[0009] Preferably, there are at least two fans, which are evenly arranged in the circumferential direction of the gas space, and the blowing direction of the fans is set to make the cold air flow in the gas space in a clockwise or counterclockwise unidirectional manner.

[0010] Preferably, the cabinet shell and the power distribution inner chamber are fixedly connected together via a connecting block.

[0011] Preferably, an inflation tube is provided on the cabinet shell, and the inflation valve cavity of the inflation tube is communicated with the air cavity.

[0012] Preferably, the cooling component includes a heat conductive sheet, which is fixedly installed in the gas space between the cabinet shell and the power distribution inner chamber, and the heat conductive sheet is fixedly connected to the outer wall of the power distribution inner chamber. A plurality of evenly arranged heat conductive sheets are arranged in the gas space, and a cooling coil is fixed on the heat conductive sheet.

[0013] Preferably, ventilation holes are formed on the plate surface of the heat conducting plate, and the axial direction of the ventilation holes is the vertical direction, corresponding to the fan above or below the cooling component.

[0014] The technical solution of the present application has at least the following advantages and beneficial effects:

[0015] In the utility model, an air cavity filled with inert gas is provided in the cabinet shell to reduce noise. Inert gas noise reduction is generally used in the construction field. For example, air or inert gas is filled into hollow glass to increase the thermal insulation and sound insulation performance of the hollow glass. In the utility model, an air cavity is innovatively provided in the power distribution cabinet, and inert gas is introduced to absorb the noise inside the cabinet to achieve the effect of noise reduction.

[0016] By setting up a gas space in the cabinet, the air is cooled by the cooling components, and then multiple fans drive the cold air to circulate around the outside of the electrical accessories to absorb heat and achieve cooling;

[0017] The heat accumulated in the power distribution room is accelerated to be discharged into the gas space for cooling through the heat conductive sheet, and the inert gas chamber on the cabinet body is used to isolate the heat exchange between the external environment and the cold air in the cabinet by utilizing its low thermal conductivity, thereby improving the cooling efficiency of the cold air in the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 2This is a schematic cross-sectional structural diagram of the cooling component of the device.

[0020] Figure 3 This is a schematic diagram of the location structure of the fan of the device.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the device.

[0022] Figure 5 It is a schematic diagram of the overall structure of the device.

[0023] In the figure: 1-cabinet shell; 2-distribution inner room; 4-fan; 11-air cavity; 12-inflation pipe; 13-external sealing door; 21-connection block; 22-internal sealing door; 31-heat conductive sheet; 32-cooling coil; 33-ventilation hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. If the terms "center", "upper", "lower", "inner", "outer", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the figure, or the orientation or position relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. It should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] Example

[0027] Please refer to Figure 1-Figure 5The utility model provides a low-noise heat dissipation distribution cabinet, comprising a cabinet shell 1, a distribution inner chamber 2, a cooling component, a fan 4, an air cavity 11, an air charging pipe 12, and a connecting block 21.

[0028] Furthermore, a power distribution inner chamber 2 is fixedly provided inside the cabinet shell 1, and electrical accessories are installed inside the power distribution inner chamber 2. An air cavity 11 is provided in the shell of the cabinet shell 1, and the air cavity 11 is filled with inert gas.

[0029] Because the thermal conductivity of inert gas is low, the conduction of heat can be reduced, and inert gas can absorb vibration sound waves and effectively isolate noise. Therefore, inert gas has ideal thermal insulation performance and sound insulation and noise reduction effects.

[0030] Preferably, the air cavity 11 corresponds to the wall surface of the cabinet shell 1 in each direction, covers the power distribution inner chamber 2 arranged inside the cabinet shell 1, and reduces the noise generated by the electrical equipment inside the cabinet shell 1 during operation through the sound insulation performance of the inert gas, so as to achieve a low noise effect.

[0031] In some feasible embodiments, an inflation tube 12 is passed through the cabinet shell 1, and the inflation valve cavity of the inflation tube 12 is connected with the air cavity 11. When the air cavity 11 is inflated, the external air pipe is connected with the inflation tube 12, the air pressure opens the inflation valve cavity, and the inert gas is filled into the air cavity 11; after the air cavity 11 is filled with the inert gas, the external air pipe is removed, and the inflation valve cavity of the inflation tube 12 is automatically closed due to the reverse air pressure of the inert gas in the air cavity 11.

[0032] Furthermore, the cabinet shell 1 and the power distribution inner chamber 2 are fixedly connected together by a connecting block 21. There is a distance between the cabinet shell 1 and the wall of the power distribution inner chamber 2, so that there is a gas space between the two. The connecting block 21 is located in the gas space to support the power distribution inner chamber 2. At least one refrigeration component is arranged in the gas space. At least one fan 4 is arranged in the gas space, and the fan 4 is located on one side of the refrigeration component.

[0033] Preferably, when the electrical equipment inside the distribution chamber 2 is working, it will emit heat. The heat accumulated in the distribution chamber 2 will cause electrical equipment failure. At this time, the refrigeration component and the fan 4 will also work successively. The refrigeration component will cool down the air in the gas space, and then the fan 4 will drive the cold air to flow in the entire gas space. The cold air circulates on the outer wall of the distribution chamber 2, absorbs the heat accumulated inside the distribution chamber 2, thereby reducing the stability of the electrical equipment when it is working.

[0034] In addition, by arranging the air cavity 11 outside the gas space, the external environment and the gas space with a lowered temperature are isolated through its thermal insulation performance, thereby avoiding heat exchange between the cold air and the external environment of the distribution cabinet, and improving the cooling efficiency of the cold air on the electrical equipment.

[0035] In some feasible embodiments, the cooling component includes a heat conductive sheet 31 , a cooling coil 32 , and a ventilation hole 33 .

[0036] The heat conducting sheet 31 is fixedly installed in the gas space between the cabinet shell 1 and the power distribution chamber 2. The heat conducting sheet 31 is fixedly connected to the outer wall of the power distribution chamber 2. A number of evenly arranged heat conducting sheets 31 are arranged in the gas space. The heat conducting sheets 31 are connected to the power distribution chamber 2 through the sheet-shaped plate surface, so that the heat accumulated in the power distribution chamber 2 is quickly transferred to the gas space, which is convenient for the heat exchange of the cold air. A cooling coil 32 is fixedly arranged on the heat conducting sheet 31. The cooling coil 32 is a multi-section curved coil. The temperature in the gas space is reduced by the flow of the condensing agent inside it.

[0037] Ventilation holes 33 are provided on the plate surface of the heat conducting plate 31, and a plurality of fans 4 are arranged in the entire gas space, wherein the cooling components are arranged on the left and right sides of the power distribution cabinet, and fans 4 are provided above and below the cooling components on each side, and the blowing directions of the fans 4 at the upper and lower locations are consistent, and the axial direction of the ventilation holes 33 is the vertical direction, which is also consistent with the blowing direction, and accordingly, the blowing directions of the fans 4 at the upper and lower locations of the cooling components on the other side are consistent.

[0038] Preferably, when the fans on one side blow air vertically upward, the fans on the other side blow air vertically downward, so that the cold air in the gas space flows in a clockwise direction, absorbing and cooling the heat generated by the distribution chamber 2, wherein fans are also provided at the top and bottom of the distribution chamber to assist in accelerating the flow of cold air (when all fans blow in reverse, the cold air flows in a counterclockwise direction, which can also achieve a cooling effect).

[0039] The fan 4 includes fan blades and a motor, which belongs to the prior art and thus will not be described in detail in the specification.

[0040] The condensing agent flowing in the cooling coil 32 may be liquid or gas.

[0041] A matching condensing device is provided at the end of the cooling coil 32, including a compressor, a condenser, an evaporator and various valve pipe components; the cooling device formed by the combination of the condensing device and the cooling coil 32 is similar in structure to the air conditioning cooling device, which belongs to the prior art and is therefore not described in detail in the specification.

[0042] In some feasible embodiments, a condensing device matching the cooling coil 32 is arranged on the outside of the entire cabinet, and the pipe of the cooling coil 32 passes through the entire cabinet and is connected to the external condensing device. At this time, multiple cooling coil 32 pipes of the entire cabinet set up in the external environment are connected to one condensing device, that is, multiple small cooling coils 32 are controlled by a large condensing device, and the condensing device is stored in a separate independent chamber space for sound insulation and temperature insulation (the chamber space is not connected or interacted with the chamber space where the distribution cabinet is placed); the cooling coil 32 pipes of each cabinet are connected to the condensing device through quick-release parts, which is convenient for moving and installing the entire cabinet (the quick-release parts are preferably quick connectors of the pipes).

[0043] In some feasible embodiments, the power distribution chamber 2 includes an openable and closable internal sealed door 22, and the cabinet shell 1 includes an openable and closable external sealed door 13, so that the staff can open the cabinet to install and replace electrical accessories or cooling components. A corresponding air cavity 11 is also provided inside the internal sealed door 22.

[0044] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution of the present invention, and the scope of the present invention is defined by the attached claims.

Claims

1. A low-noise heat dissipation distribution cabinet, characterized in that: It comprises a cabinet shell (1), wherein a power distribution inner chamber (2) is fixedly arranged inside the cabinet shell (1), electrical accessories are installed inside the power distribution inner chamber (2), and an air cavity (11) is arranged in the shell of the cabinet shell (1), and the air cavity (11) is filled with an inert gas; A gas space is provided between the cabinet shell (1) and the power distribution inner chamber (2), at least one cooling component is provided in the gas space, at least one fan (4) is provided in the gas space, and the fan (4) is located above or below the cooling component.

2. A low noise heat dissipation distribution cabinet according to claim 1, characterized in that: There are at least two fans (4) which are evenly arranged in the circumferential direction of the gas space, and the blowing direction of the fans (4) enables the cold air to flow in the gas space in a clockwise or counterclockwise unidirectional manner.

3. A low noise heat dissipation distribution cabinet according to claim 1, characterized in that: The cabinet shell (1) and the power distribution inner chamber (2) are fixedly connected together via a connecting block (21).

4. A low noise heat dissipation distribution cabinet according to claim 1, characterized in that: An air filling pipe (12) is provided on the cabinet shell (1), and an air filling valve cavity of the air filling pipe (12) is in communication with the air cavity (11).

5. A low noise heat dissipation distribution cabinet according to claim 1, characterized in that: The cooling component comprises a heat conducting sheet (31), the heat conducting sheet (31) being fixedly mounted in the gas space between the cabinet shell (1) and the power distribution inner chamber (2), the heat conducting sheet (31) being fixedly connected to the outer wall of the power distribution inner chamber (2), a plurality of evenly arranged heat conducting sheets (31) being arranged in the gas space, and a cooling coil (32) being fixedly mounted on the heat conducting sheet (31).

6. A low noise heat dissipation distribution cabinet according to claim 5, characterized in that: A ventilation hole (33) is formed on the plate surface of the heat conducting plate (31), and the axial direction of the ventilation hole (33) is the vertical direction, corresponding to the fan (4) above or below the cooling component.

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