A low-voltage switchgear

Abstract

This utility model provides a low-voltage switchgear assembly, relating to the field of low-voltage switchgear assemblies. It includes a switchgear assembly comprising a cabinet body and side panels fixed to both sides of the cabinet body, and a cooling assembly comprising a protective cover fixed to the surface of the side panels, a heat sink located within the cavity of the protective cover, a thermoelectric cooling chip located on one side of the heat sink, a fan located within the cavity of the protective cover and embedded in the surface of the side panels, and a cooling fan located on the other side of the heat sink. This utility model effectively solves the shortcomings of traditional low-voltage switchgear assemblies in heat dissipation through the cooling assembly. The cooling assembly utilizes the combination of the thermoelectric cooling chip and the heat sink to quickly absorb and dissipate the heat generated by high-current components inside the cabinet, greatly improving heat dissipation efficiency. Simultaneously, the coordinated operation of the fan, intake fan, and exhaust fan creates good air convection, further enhancing the ventilation effect inside the cabinet and ensuring stable operation of the switchgear even in high-temperature environments.

Description

Technical Field

[0001] This utility model belongs to the field of low-voltage switchgear, specifically a low-voltage switchgear. Background Technology

[0002] Low-voltage switchgear is a combined electrical device that integrates switching equipment, measuring instruments, protective electrical appliances and auxiliary equipment. It is usually installed on the low-voltage side of the power system to receive, distribute and control electrical energy. It is widely used in residential, commercial and industrial fields to provide a safe and stable power supply.

[0003] Low-voltage switchgear can be structurally divided into fixed type and withdrawable type. Fixed type can reliably fix each electrical component in a fixed position in the cabinet. The cabinet shape is generally cubic, such as panel type, box type, etc., and there are also frustum type, such as table type. This type of cabinet can be single row or row. Withdrawable type consists of fixed cabinet and movable part that contains the main electrical components such as switches. The movable part should be easy to move and reliably positioned after being moved in. Drawers of the same type and specifications can be reliably interchanged.

[0004] Fixed low-voltage switchgear typically integrates high-current components such as busbars, circuit breaker contacts, and current transformers. These high-current components are concentrated in the narrow space inside the cabinet, generating a large amount of heat during operation. Traditional heat dissipation methods rely on natural convection through bottom air inlets and top exhaust vents. However, with these components densely arranged inside the cabinet, the airflow path is prone to become chaotic, hindering effective circulation and impeding heat dissipation. The resulting heat causes the temperature inside the cabinet to rise, affecting the stability of the switchgear. Some cabinets also add fans to the exhaust vents to improve airflow. However, while adding fans enhances airflow to some extent, their cooling effect is significantly reduced in high-temperature environments, making it difficult to meet the high heat dissipation requirements of the switchgear.

[0005] In summary, this utility model provides a low-voltage switchgear to solve the above problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A low-voltage switchgear assembly includes a switchgear unit, comprising a cabinet body and side panels fixed to both sides of the cabinet body, and a cooling assembly including a protective cover fixed to the surface of the side panels, a heat sink located in the inner cavity of the protective cover, a semiconductor cooling chip located on one side of the heat sink, a fan located in the inner cavity of the protective cover and embedded in the surface of the side panels, a cooling fan located on the other side of the heat sink, a support plate for supporting the cooling fan, an air inlet slot and an air intake fan for air intake inside the cabinet body, and an exhaust fan for heat dissipation inside the cabinet body, wherein the protective cover communicates with the inner cavity of the cabinet body.

[0008] Furthermore, in this utility model, the switch cabinet assembly also includes a cabinet door hinged to the front of the cabinet body, a sealing plate fixed to the lower end of the front of the cabinet body, and a panel fixed to the upper end of the front of the cabinet body.

[0009] Furthermore, in this utility model, a back panel is fixedly connected to the upper end of the back of the cabinet, and a back door is also hinged to the back of the cabinet, and the back door is a double-opening arrangement. A beam frame is fixedly connected to the inner cavity of the cabinet.

[0010] Furthermore, in this utility model, the support plate is fixedly connected to the heat sink, the cooling fan is fixed to the surface of the support plate and extends to the outside of the protective cover, and the heat dissipation surface of the semiconductor cooling chip is fixedly connected to the heat sink.

[0011] Furthermore, in this utility model, the air inlet slot is formed on the surface of the sealing plate, the air intake fan is fixed to the back of the sealing plate, and the exhaust fan is fixed to the back of the back plate.

[0012] Furthermore, in this utility model, a temperature control component is also installed on the surface of the switch cabinet assembly. The temperature control component includes a PID controller fixed to the front of the panel and a temperature probe fixed to the surface of the side panel, and the detection end of the temperature probe extends into the inner cavity of the cabinet.

[0013] Furthermore, in this invention, the output terminal of the temperature probe is electrically connected to the input terminal of the PID controller, and the output terminal of the PID controller is electrically connected to the input terminals of the semiconductor cooling chip, the fan, the intake fan, and the exhaust fan, respectively.

[0014] Beneficial effects: This utility model has the following beneficial effects:

[0015] This invention effectively solves the shortcomings of traditional low-voltage switchgear in terms of heat dissipation by setting up a cooling component. The cooling component utilizes a combination of semiconductor cooling chips and heat sinks to quickly absorb and dissipate the heat generated by high-current components inside the cabinet, greatly improving heat dissipation efficiency. At the same time, the coordinated operation of the fan, intake fan, and exhaust fan creates good air convection, further enhancing the ventilation effect inside the cabinet and ensuring stable operation of the switchgear even in high-temperature environments. In addition, the setting of the temperature control component enables the switchgear to automatically adjust the operation of the heat dissipation equipment according to the temperature inside the cabinet, which not only ensures the heat dissipation effect but also saves energy, effectively improving the heat dissipation effect and operational stability of the switchgear. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the separated structure of the cooling component and the switch cabinet component of this utility model;

[0019] Figure 4 This is a schematic diagram of the protective cover and heat sink of this utility model in their separated state.

[0020] In the picture:

[0021] 100. Switch cabinet assembly; 110. Cabinet body; 120. Cabinet door; 130. Sealing plate; 140. Side panel; 150. Front panel; 160. Rear door; 170. Back panel; 180. Beam frame; 200. Cooling assembly; 210. Protective cover; 220. Heat sink; 230. Semiconductor cooling chip; 240. Fan; 250. Cooling fan; 260. Support plate; 270. Air inlet slot; 280. Intake fan; 290. Exhaust fan; 300. Temperature control assembly; 310. PID controller; 320. Temperature probe. Detailed Implementation

[0022] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0023] Example 1

[0024] like Figure 1-4 As shown, this is the first embodiment of the present invention. This embodiment provides a low-voltage switchgear assembly, including a switchgear assembly 100, including a cabinet 110, and side plates 140 fixed to both sides of the cabinet 110. A cooling assembly 200 includes a protective cover 210 fixed to the surface of the side plate 140, a heat sink 220 located in the inner cavity of the protective cover 210, a semiconductor cooling chip 230 located on one side of the heat sink 220, a fan 240 located in the inner cavity of the protective cover 210 and embedded in the surface of the side plate 140, a cooling fan 250 located on the other side of the heat sink 220, a support plate 260 for supporting the cooling fan 250, an air inlet slot 270 and an air intake fan 280 for air intake inside the cabinet 110, and an exhaust fan 290 for heat exhaust inside the cabinet 110. The protective cover 210 is connected to the inner cavity of the cabinet 110.

[0025] like Figure 1-4 As shown, the thermoelectric cooling chip 230 is attached to one side of the heat sink 220, and actively cools using the thermoelectric effect, drawing heat from the inside of the cabinet 110 to the outside. The heat sink 220 and the cooling fan 250 are used to exhaust the heat generated by the thermoelectric cooling chip 230 to the outside. The fan 240 is used to accelerate the airflow inside the cabinet 110. External air enters the cabinet 110 through the air inlet slot 270 and the intake fan 280. The exhaust fan 290 is used to exhaust the airflow inside the cabinet 110. Thus, through the coordinated operation of the air inlet slot 270, the intake fan 280 and the exhaust fan 290, a stable airflow channel is formed, creating an airflow circulation inside and outside the cabinet. Through the synergistic effect of the multi-layer heat dissipation structure, a composite heat dissipation method of active, passive and internal and external circulation is formed, thereby overcoming the limitations of traditional natural heat dissipation and effectively improving the heat dissipation effect and operational stability of the switch cabinet.

[0026] Example 2

[0027] Reference Figure 1-3 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0028] In this embodiment, the switch cabinet assembly 100 also includes a cabinet door 120 hinged to the front of the cabinet body 110, a sealing plate 130 fixed to the lower end of the front of the cabinet body 110, and a panel 150 fixed to the upper end of the front of the cabinet body 110.

[0029] A back panel 170 is fixedly connected to the upper part of the back of the cabinet 110. A back door 160 is also hinged to the back of the cabinet 110, and the back door 160 is a double-opening design. A beam frame 180 is fixedly connected to the inner cavity of the cabinet 110.

[0030] like Figure 1-3As shown, cabinet 110 is used to house electrical components and provide a safe and enclosed operating environment. Side panels 140 are fixed to both sides of cabinet 110 to enclose the sides of cabinet 110. Cabinet door 120 is connected to the front of cabinet 110 by hinges for easy operation and maintenance. Sealing plate 130 is located at the lower end of the front of cabinet 110 for protection and air intake. Panel 150 is located at the upper end of the front of cabinet 110 and carries temperature control component 300 and instruments for electrical components inside the cabinet. Back door 160 is hinged to the back of cabinet 110 for easy rear maintenance. Back panel 170 is fixed to the upper end of the back of cabinet 110 for installing exhaust fan 290. Beam frame 180 provides support for internal components of cabinet 110.

[0031] Example 3

[0032] Reference Figure 1-4 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0033] In this embodiment, the support plate 260 is fixedly connected to the heat sink 220, the cooling fan 250 is fixed to the surface of the support plate 260 and extends to the outside of the protective cover 210, and the heat dissipation surface of the semiconductor cooling chip 230 is fixedly connected to the heat sink 220.

[0034] An air inlet slot 270 is formed on the surface of the sealing plate 130, an intake fan 280 is fixed to the back of the sealing plate 130, and an exhaust fan 290 is fixed to the back of the back plate 170.

[0035] The switch cabinet assembly 100 is also equipped with a temperature control assembly 300. The temperature control assembly 300 includes a PID controller 310 fixed to the front of the panel 150 and a temperature probe 320 fixed to the surface of the side panel 140. The probe end of the temperature probe 320 extends into the inner cavity of the cabinet 110.

[0036] The output terminal of the temperature probe 320 is electrically connected to the input terminal of the PID controller 310, and the output terminal of the PID controller 310 is electrically connected to the input terminals of the thermoelectric cooler 230, the fan 240, the intake fan 280, and the exhaust fan 290, respectively.

[0037] like Figure 1-4As shown, the PID controller 310 is installed on the panel 150 to receive temperature data and control the operating status of the cooling component 200. The temperature probe 320 is installed on the surface of the side panel 140, with the probe end extending into the inner cavity of the cabinet 110 to collect temperature data in real time. The temperature probe 320 can be set up in multiple points to detect the temperature at different locations inside the cabinet 110, preventing local overheating. The temperature probe 320 collects the temperature inside the cabinet and transmits the data to the PID controller 310. The PID controller 310 determines whether the cooling component 200 needs to be started based on the set value. If cooling is required, it controls the semiconductor cooling chip 230, fan 240, intake fan 280, and exhaust fan 290 to operate in coordination to achieve intelligent temperature control.

[0038] The protective cover 210 provides protection for the thermoelectric cooler 230 to prevent dust from entering. The heat sink 220 is made of thermally conductive material and is used to conduct heat from the thermoelectric cooler 230. One side of the thermoelectric cooler 230 absorbs heat from the air inside the cabinet 100 through the fan 240, and the other side is connected to the heat sink 220 to dissipate heat. The fan 240 is embedded in the side panel 140 to accelerate the airflow inside the cabinet 110. The cooling fan 250 is installed on the support plate 260 to actively expel the heat from the heat sink 220. The air inlet slot 270 and the intake fan 280 provide an external air inlet channel. The exhaust fan 290 is located on the back of the back panel 170 to expel the hot air inside the cabinet 110. The thermoelectric cooler 230 absorbs the heat inside the cabinet, and then the heat sink 220 and the cooling fan 250 expel the heat to the outside of the cabinet 110. At the same time, the intake fan 280 and the exhaust fan 290 form an internal and external air circulation to ensure that the internal temperature of the cabinet 100 remains stable.

[0039] During use, outside air enters through the air inlet slot 270 on the sealing plate 130, is guided into the cabinet 110 by the intake fan 280, is heated by the electrical components inside the cabinet 100 and flows upward, and is discharged to the outside by the exhaust fan 290. At the same time, the cooling fan 250 and the fan 240 work together to dissipate the heat generated by the thermoelectric cooling chip 230 to the outside. The thermoelectric cooling chip 230 is attached to one side of the heat sink 220 and uses the thermoelectric effect to actively cool, drawing heat from the inside of the cabinet 110 to the outside, dissipating it through the heat sink 220, with the fan 240 assisting in heat dissipation, and the cooling fan 250 exhausting the heat, forming a highly efficient cooling cycle.

[0040] Temperature probe 320 monitors the internal temperature of cabinet 110 in real time and transmits the data to PID controller 310. PID controller 310 automatically adjusts the operation of cooling component 200 according to the set temperature. Cold air enters from the bottom and hot air is discharged from the top, forming a stable air circulation. Through the coordinated operation of cooling component 200 and temperature control component 300, constant control of the internal temperature of the cabinet is achieved, ensuring stable operation of electrical components.

[0041] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0042] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A low-voltage switchgear, characterized in that: include, A switch cabinet assembly (100) includes a cabinet body (110) and side panels (140) fixed to both sides of the cabinet body (110); The cooling assembly (200) includes a protective cover (210) fixed to the surface of the side plate (140), a heat sink (220) located in the inner cavity of the protective cover (210), a semiconductor cooling chip (230) located on one side of the heat sink (220), a fan (240) located in the inner cavity of the protective cover (210) and embedded in the surface of the side plate (140), a cooling fan (250) located on the other side of the heat sink (220), a support plate (260) for supporting the cooling fan (250), an air inlet slot (270) and an air intake fan (280) for air intake inside the cabinet (110), and an exhaust fan (290) for heat exhaust inside the cabinet (110). The protective cover (210) is in communication with the inner cavity of the cabinet (110).

2. The low-voltage switchgear as described in claim 1, characterized in that: The switch cabinet assembly (100) also includes a cabinet door (120) hinged to the front of the cabinet body (110), a sealing plate (130) fixed to the lower end of the front of the cabinet body (110), and a panel (150) fixed to the upper end of the front of the cabinet body (110).

3. The low-voltage switchgear as described in claim 1, characterized in that: A back panel (170) is fixedly connected to the upper end of the back of the cabinet (110). A back door (160) is also hinged to the back of the cabinet (110) via a hinge. The back door (160) is a double-opening door. A beam frame (180) is fixedly connected to the inner cavity of the cabinet (110).

4. The low-voltage switchgear as described in claim 1, characterized in that: The support plate (260) is fixedly connected to the heat sink (220), the cooling fan (250) is fixed to the surface of the support plate (260) and extends to the outside of the protective cover (210), and the heat dissipation surface of the semiconductor cooling chip (230) is fixedly connected to the heat sink (220).

5. The low-voltage switchgear as described in claim 1, characterized in that: The air inlet slot (270) is formed on the surface of the sealing plate (130), the air intake fan (280) is fixed to the back of the sealing plate (130), and the exhaust fan (290) is fixed to the back of the back plate (170).

6. The low-voltage switchgear as described in claim 1, characterized in that: The surface of the switch cabinet assembly (100) is also equipped with a temperature control assembly (300), which includes a PID controller (310) fixed to the front of the panel (150) and a temperature probe (320) fixed to the surface of the side panel (140), with the probe end of the temperature probe (320) penetrating into the inner cavity of the cabinet (110).

7. The low-voltage switchgear as described in claim 6, characterized in that: The output terminal of the temperature probe (320) is electrically connected to the input terminal of the PID controller (310), and the output terminal of the PID controller (310) is electrically connected to the input terminals of the thermoelectric cooler (230), the fan (240), the intake fan (280), and the exhaust fan (290), respectively.

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