CN107834813A - A kind of switch board - Google Patents

Abstract

The invention relates to electrification control and discloses a control cabinet. The control cabinet in the present invention includes: a cabinet body and a frequency converter unit; the cabinet body includes a cabinet body and a cabinet door, the front part of the cabinet body is detachably connected to the cabinet door, and the top of the back surface of the cabinet body The position is provided with a first air outlet, and the first air outlet is installed with a first protective device for waterproof and dustproof; the frequency converter unit is placed inside the cabinet body, and the frequency converter unit includes a first fan and a housing. A fan opening is provided above the first surface in the casing, and the position of the fan opening is used to install the first fan. The first surface is attached to the back surface of the cabinet body and the first fan is embedded in the first air outlet. The embodiment of the present invention enables the control cabinet not only to have high-level protection, but also to realize stable heat dissipation performance, thereby improving the service life of the control cabinet.

Description

a control cabinet

technical field

The invention relates to electrification control, in particular to a control cabinet.

Background technique

With the development of economy and society, frequency converter is widely used in various industries as a kind of energy-saving equipment, and different industries and different application fields have different requirements for the use environment of frequency converter. For example, the mining industry requires the inverter to be used in dusty and highly corrosive environments, and the air-conditioning industry requires the inverter to be used in outdoor dusty and rainy environments. The harsh and changeable environment requires the frequency converter to have both dustproof and waterproof functions, which requires the protection level system of the frequency converter or control cabinet to be above IP44 protection level. The protection level (INGRESS PROTECTION, referred to as "IP") is composed of two numbers (such as: IP×× level standard), the first number indicates the solid protection level, the level of preventing the intrusion of foreign objects such as dust, and the second number Indicates the liquid protection level, which is the degree of airtightness against moisture and water intrusion. The larger the number, the higher the protection level; for example, the IP44 protection level means: the first 4 means that it is protected against wires or sheets with a diameter greater than 1mm or diameters Solids exceeding 1 mm; the second 4 indicates that splash protection or water splashed from any direction shall have no harmful effects.

While the frequency converter or control cabinet reaches the protection level of IP44, it also needs the heat dissipation performance of the frequency converter or control cabinet to be stable and reliable. The inventor found that there are at least the following problems in the prior art: the air inlet and outlet of the frequency conversion control cabinet currently in use adopts an inner and outer double-layer structure, wherein the middle of the double layer is a sandwich cavity. On the one hand, this structure has large wind resistance and is not conducive to heat dissipation. , On the other hand, it cannot reach the high protection level of IP44. Some frequency converters adopt layered treatment, do not protect the radiator layer, but use cooling fans with IP44 protection level; the electronic component layer adopts a closed cavity design, but the temperature rise of the components in the closed cavity is relatively high Life is not good. Some control cabinets are treated with high protection level. However, when the inverter is working, the hot air from the inverter unit is directly discharged into the control cabinet, which affects the service life of other components in the cabinet.

Contents of the invention

The purpose of the present invention is to provide a control cabinet, so that the control cabinet not only has high-level protection, but also can realize stable heat dissipation performance, thereby improving the service life of the control cabinet.

In order to solve the above technical problems, the embodiment of the present invention provides a control cabinet, including: a cabinet body and a frequency converter unit; the cabinet body includes a cabinet body and a cabinet door, and the front part of the cabinet body is detachable from the cabinet door connected, the upper position of the back surface of the cabinet body is provided with a first air outlet, and the first air outlet is installed with a first protection device for waterproof and dustproof, wherein, the back of the cabinet body and the cabinet body The front part of the cabinet body is parallel to each other, and the position above the back surface of the cabinet body is the position where the back surface of the cabinet body is close to the top of the cabinet body; the inverter unit is placed inside the cabinet body, and the inverter unit includes the first A fan and a casing, a fan opening is provided above the first surface in the casing, the position of the fan opening is used to install the first fan, the first surface is attached to the back surface of the cabinet body and the first fan is inlaid In the first air outlet, the position above the first surface is the position where the first surface is close to the top of the casing.

Compared with the prior art, the embodiments of the present invention provide a first air outlet on the back surface of the cabinet body of the control cabinet, thereby ensuring that the heat in the control cabinet is discharged through the first air outlet. In addition, the first The first protective device for waterproof and dustproof is installed at the air outlet. The first protective device ensures that the control cabinet can also be waterproof and dustproof while cooling normally, thus protecting the equipment in the control cabinet from the harsh external environment. Even under the normal operation, to achieve a stable heat dissipation performance. In addition, since the frequency converter unit is the main unit that generates heat in the control cabinet, a first fan is installed inside the frequency converter, and the first fan is installed at the fan opening above the first surface in the housing, and the first surface and The back surface of the cabinet body is attached and the first fan is embedded in the first air outlet, so that the first fan discharges the heat in the cabinet body from the control cabinet through the first air outlet, thereby ensuring that the heat generated in the cabinet will not It affects other devices in the control cabinet, and realizes the efficient heat dissipation function of the control cabinet, thereby improving the service life of the control cabinet.

In addition, the frequency converter unit also includes: a partition plate, a rectification heat dissipation unit, an inverter heat dissipation unit and an electrolytic capacitor unit; the separation plate, the rectification heat dissipation unit, the inverter heat dissipation unit and the electrolytic capacitor unit are arranged in the casing of the frequency converter unit; Partition plate, used to divide the space inside the inverter unit housing into the front end area of the inverter unit and the rear end area of the inverter unit. The electrolytic capacitor unit is placed in the front end area of the inverter unit, and the rectification and heat dissipation unit is placed in the rear end area of the inverter unit. , the inverter heat dissipation unit, and the rectification heat dissipation unit and the inverter heat dissipation unit are fixed on the partition board. In the inverter unit, the rectifier heat dissipation unit and the inverter heat dissipation unit are the main heat dissipation units in the inverter unit. The electrolytic capacitor unit is separated from the rectifier heat dissipation unit and the inverter heat dissipation unit through the partition plate, so that the rectifier heat dissipation unit and the inverter heat dissipation unit are separated. The heat generated by the inverter heat dissipation unit will not affect the electrolytic capacitor unit, which ensures the normal heat dissipation of the electrolytic capacitor unit and further enhances the heat dissipation function of the control cabinet.

In addition, a first vent and a second vent are provided at the bottom of the inverter unit casing; the first vent is located at the front end of the inverter unit, and the second vent is located at the rear end of the inverter unit. By arranging the first ventilation opening and the second ventilation opening, the first ventilation opening and the second ventilation opening cooperate with the partition plate to realize a reasonable air volume distribution and improve the heat dissipation efficiency of the control cabinet.

In addition, the frequency converter unit further includes: a reactor; the reactor is placed in the front end area of the frequency converter unit and faces the first air vent. Because the heat generated by the reactor is small, the reactor is placed in the front end of the inverter unit to dissipate heat through the first vent, and effectively use the first vent to dissipate heat from the inverter, further improving the heat dissipation performance of the control cabinet.

In addition, the control cabinet also includes: a main control unit; the location of the main control unit is at a first preset distance from the first side of the inverter unit; the second side of the cabinet body is provided with a second air outlet, and the second air outlet is installed with a Two protective devices, wherein the first side is opposite to the second side. The position of the main control unit is separated from the first side of the frequency converter by a first preset distance, so that the heat generated by the frequency converter unit will not affect the main control unit. Similarly, the heat generated by the main control unit will not affect the frequency converter unit. In addition, the heat generated by the main control unit is exhausted from the control cabinet through the second air outlet on the second side of the cabinet body.

In addition, the first protective device includes: the first fan cover, the first air filter cotton, sheet metal and waterproof sealing gasket; the first air filter cotton is installed inside the first fan cover, the first fan cover is fixed on the sheet metal, and the sheet metal The metal is fixed at the position of the first air outlet of the cabinet body, and the waterproof sealing gasket is located between the sheet metal and the cabinet body. The first fan cover is used to protect the first fan, the first air filter cotton is used for waterproofing, and the first fan cover is fixed on the sheet metal, and the sheet metal is fixed on the position of the first air outlet of the cabinet body, ensuring the first The firmness of the installation of the fan cover on the cabinet body is not easy to fall off. At the same time, the use of waterproof sealing gaskets further ensures that the water outside the cabinet is not easy to flow into the first fan cover and affect the components in the cabinet body.

In addition, the second protective device includes: a cooling fan, a second fan cover, and a second air filter cotton; the second air filter cotton is installed inside the second fan cover, and the cooling fan is installed on the second fan cover; the second The fan cover is fixed at the position of the second air outlet of the cabinet body. The second fan cover protects the cooling fan, and the second air filter cotton is used for waterproofing and dustproofing.

In addition, the bottom of the cabinet body is provided with a first air inlet, the first air inlet is equipped with a third protective device, and the third protective device includes a first louver, a second louver and a third air filter cotton; the third air filter Cotton is installed between the first louver and the second louver, and the first louver and the second louver are detachably connected. The third air filter cotton is used for waterproofing. At the same time, the third air filter cotton is installed between the first louver and the second louver, which ensures the ventilation of the first air inlet and prevents the air from entering from the first air inlet. Water, the first louver and the second louver are detachably connected, so that the third air filter cotton can be replaced at any time. When the first louver or the second louver is damaged, it can be replaced flexibly. There is no need to replace the third protective device as a whole, which saves the use cost.

In addition, the bottom of the inverter unit is separated from the bottom of the cabinet body by a second preset distance, and the front of the inverter unit is separated by a third preset distance from the front of the cabinet body. The second preset distance and the third preset distance allow the heat of the main control unit to be quickly discharged from the cabinet body through the first air inlet and the second air outlet.

In addition, a pull ring is provided on the top of the cabinet body for hanging installation of the control cabinet. The setting of the pull ring makes the control cabinet adopt the hanging installation method, which is convenient for the air intake of the first air inlet and the exhaust air of the second air inlet.

Description of drawings

1 is a schematic diagram of the overall structure of a control cabinet according to a first embodiment of the present invention;

Fig. 2 is a three-dimensional structural schematic view of the back of a control cabinet according to the first embodiment of the present invention;

Fig. 3 is a schematic structural view of the installation of a first fan in a control cabinet according to the first embodiment of the present invention;

4 is a schematic structural view of a first protection device of a control cabinet according to the first embodiment of the present invention;

Fig. 5 is a schematic structural view of a second protection device of a control cabinet according to the first embodiment of the present invention;

Fig. 6 is a structural schematic diagram of a section A-A of a second protection device of a control cabinet according to the first embodiment of the present invention;

Fig. 7 is a schematic structural view of a third protection device of a control cabinet according to the first embodiment of the present invention;

Fig. 8 is a schematic structural diagram of a frequency converter unit of a control cabinet according to a second embodiment of the present invention;

Fig. 9 is a bottom plan view of a frequency converter unit of a control cabinet according to a second embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

A first embodiment of the invention relates to a control cabinet. As shown in FIGS. 1 to 3 , the control cabinet includes: a cabinet body 10 and a frequency converter unit 20 . As shown in Figure 2, the cabinet 10 includes a cabinet body 101 and a cabinet door 102, the front part of the cabinet body 101 is detachably connected to the cabinet door 102, the upper position of the back surface 1011 of the cabinet body 101 is provided with The first air outlet, the first air outlet is installed with a first protective device 1013 for waterproof and dustproof, wherein, the back of the cabinet body 101 is parallel to the front of the cabinet body 101, and the cabinet body 101 The position above the back surface 1011 of the cabinet body 101 is the position where the back surface 1011 of the cabinet body 101 is close to the top of the cabinet body 101 .

Specifically, the front part of the cabinet body 101 is shown in Figure 1 (the shell of the cabinet body is not shown, please refer to Figure 2 for the shell), which is a position perpendicular to the horizontal plane and facing forward, and the cabinet body 101 is a cuboid The shape of the cabinet body 101 is except that the front part has no shell, and the remaining surfaces have shells. In order to protect the components in the cabinet body 101 and facilitate the replacement of the components in the cabinet body 101 at any time, the The cabinet door is installed at the bottom, and the cabinet door 102 is detachably connected with the front part of the cabinet body 101. The front of the cabinet body 101 is parallel to the back, and a first air outlet is provided above the back surface 1011 of the cabinet body 101. The first air outlet is equipped with a first protective device 1013 for waterproof and dustproof. The shape of the first air outlet is the same as that of the first guard 1013, the guard as shown in Figure 2 is in the shape of a rectangle, wherein the first guard 1013 can be a rain-proof louver, and the rain-proof louver can not only effectively Prevent rainwater from penetrating into the cabinet body 101, and no water curtain will be formed on the windward side of the entire louver, thereby ensuring normal ventilation requirements.

The frequency converter unit 20 is placed inside the cabinet body 101. The frequency converter unit 20 includes a first fan 201 and a housing. A fan opening is provided above the first surface 203 in the housing. The position of the fan opening is used to install the The first fan 201, the first surface 203 is attached to the back surface of the cabinet body 101 and the first fan 201 is embedded in the first air outlet, wherein the position above the first surface 203 is that the first surface 203 is close to the shell the top position of the body.

Specifically, the shape of the frequency converter unit 20 is substantially the same as that of the control cabinet and the frequency converter unit 20 is smaller than the cabinet body 101 so that the frequency converter unit 20 can be placed inside the cabinet body 101 . The first surface 203 is attached to the back surface 1011 of the cabinet body 101 , that is, there is no gap between the first surface 203 of the inverter unit 20 and the back surface 1011 of the cabinet body 101 . It should be noted that the shape of the fan opening on the first surface 203 is the same as that of the first fan 201 . The number of the first fan 201 may be one or more than two. In this embodiment, the number of the first fan 201 is not limited. In this embodiment, four first fans are taken as an example for illustration. The number of fan ports is the same as the number of the first fans, and the four first fans are arranged in a row and installed at the corresponding fan ports one by one, as shown in the arrangement of the first fans in Figure 3, and Figure 3 is the inverter unit 20 is a partial structural schematic diagram of installing the first fan.

It is worth mentioning that the first fans 201 are arranged in a horizontal manner, and the area of the first air outlet should be greater than the area of all the first fans 201. For example, assuming that the area of a first fan is a square centimeter, the frequency converter unit Four first fans are installed in the housing of 20, so the area of the first air outlet is 4a square centimeters or greater than 4a square centimeters.

The first fan 201 is embedded in the first air outlet, and the first fan 201 directly discharges the heat generated in the inverter unit 20 out of the cabinet body 10 through the first air outlet, thereby ensuring that the heat generated in the inverter unit 20 will not affect Other devices in the cabinet body avoid the possibility of other devices being damaged due to overheating, thereby enhancing the service life of the control cabinet.

In a possible implementation manner, the first protection device 1013 includes: a first fan cover 10131 , a first air filter cotton 10132 , a sheet metal 10133 and a waterproof sealing gasket 10134 . The first air filter cotton 10132 is installed inside the first fan cover 10131, the first fan cover 10131 is fixed on the sheet metal 10133, the sheet metal 10133 is fixed on the position of the first air outlet of the cabinet body 101, and the waterproof sealing gasket 10134 is located 10132 and the cabinet body 101. The specific structure is shown in Figure 4.

Specifically, as shown in Figure 4, the number of first fan cover 10131 can be one, or more than two, wherein, the number of first fan cover 10131 is the same as the number of first fans 201, one The first fan cover 10131 can completely cover a first fan 201, thereby protecting the first fan 201 from being easily damaged. Meanwhile, the first air filter cotton 10132 is installed inside the first fan cover 10131 to prevent the water in the humid air from entering the control cabinet and keep the dry environment in the control cabinet. The sheet metal 10133 is fixed on the cabinet body 101 by screws. Waterproof gasket 10134, as shown in the B-B sectional view in Figure 4, is located between the sheet metal 10133 and the cabinet body 101 to prevent the water on the cabinet body from flowing into the control cabinet through the sheet metal.

In a possible implementation, the control cabinet further includes: a main control unit 30; the location of the main control unit 30 is at a first preset distance from the first side 204 of the inverter unit 20; the second side 1014 of the cabinet body 101 is set The second air outlet. The second air outlet is equipped with a second protection device 1016 , wherein the first side 204 is opposite to the second side 1014 .

Specifically, as shown in Figures 1 and 2, the main control unit 30 is separated from the first side 204 of the inverter unit 20 by a first preset distance, and the first preset distance can be set according to actual needs, for example, the first The preset distance is 10 cm or more than 20 cm. The side of the cabinet body 101 parallel to the first side 204 is the second side 1014, and a second air outlet can be arranged above the second side 1014, and the second air outlet is installed with a second protection against water and dust. As for the device 1016, the second protection device 1016 can be a rain shutter to prevent splashing of rainwater. The second protection device 1016 can be directly embedded in the position of the second air outlet.

In a possible implementation, as shown in Figures 5 to 6, the second protection device 1016 includes: a cooling fan 10161, a second fan cover 10162, and a second air filter cotton 10163; the second air filter cotton 10163 is installed on the second Inside the fan cover 10162, the cooling fan 10161 is installed on the second fan cover 10162; the second fan cover 10162 is fixed on the second air outlet of the cabinet body 101.

Specifically, as shown in Figures 5 to 6, Figure 5 is a schematic diagram of the assembly of the second fan cover 10162 and the cooling fan 10161, the second fan cover 10162 and the cooling fan 10161 are locked by screws to ensure that the cooling fan is working security in the state. As shown in FIG. 6 , a second air filter cotton 10163 is installed inside the second fan cover 10162 to prevent splashing water, moisture in humid air, and to prevent dust. In addition, the second fan cover 10162 also protects the cooling fan 10161 from splashing rainwater and water ingress, and also protects the cooling fan 10161 from being easily damaged. Fig. 6 is a schematic diagram of a cooling fan, a schematic cross-sectional view of A-A in Fig. 6, in Fig. 6 the installation positions of the second air filter cotton 10163 and the second fan cover 10162 can be seen, and the second air filter cotton 10163 is close to the second fan cover 10162 internal surface to prevent the entry of rainwater and dust.

In a possible implementation, the bottom of the cabinet body 101 is provided with a first air inlet, and the first air inlet is equipped with a third protection device 10171, and the third protection device 10171 includes: a first louver: 101711, a second louver 101712 and the third air filter cotton 101713; the third air filter cotton 101713 is installed between the first louver 101711 and the second louver 101712, and the first louver 101711 and the second louver 101712 are detachably connected .

Specifically, the first air inlet is arranged at the bottom of the cabinet body 101, parallel to the bottom of the inverter unit 20, and at the same time, the size of the first air inlet can be greater than the area of the bottom of the inverter unit 20, as shown in Figure 1 shown in . The schematic diagram of the third protective placement 10171 is shown in Figure 7, the third air filter cotton 101713 is placed between the first louver 101711 and the second louver 101712, the first louver 101711 and the second louver 101713 are locked by screws, and the shape and size of the first louver 101711 and the second louver 101713 are equal. The third protection device 10171 is fixed at the position of the first air inlet by screws.

It is worth mentioning that the bottom of the inverter unit 20 is a second preset distance from the bottom of the cabinet body 101 , and the front of the inverter unit 20 is a third preset distance from the front of the cabinet body 101 . The bottom of the inverter unit 20 is at a second preset distance from the bottom of the cabinet body 101 to facilitate air intake from the first air inlet, and the front of the inverter unit 20 is at a third preset distance from the front of the cabinet body 101. It is convenient for the air to enter the first air inlet, and at the same time, it can also help the heat dissipation of the inverter unit 20 shell. Wherein, the second preset distance is smaller than the third preset distance, for example, the third preset distance may be 100 to 120 mm, and the second preset distance is 70 mm.

In addition, a pull ring 40 is provided on the top of the cabinet body 101 for hanging installation of the control cabinet. As shown in FIG. 1 , a pull ring 40 is provided at the top four corners of the cabinet body 101 , so that the control cabinet can be installed in suspension; at the same time, the suspension installation is convenient for the first air inlet to enter the air.

Compared with the prior art, the control cabinet provided by this embodiment ensures that the heat in the control cabinet is discharged through the first air outlet by setting the first air outlet on the back surface of the cabinet body of the control cabinet. In addition, the first air outlet is equipped with a first protective device for waterproof and dustproof. The first protective device ensures that the control cabinet can also be waterproof and dustproof while normally dissipating heat, thereby protecting the equipment in the control cabinet. It can work normally even in the harsh external environment, realizing stable heat dissipation performance. In addition, since the frequency converter unit is the main unit that generates heat in the control cabinet, a first fan is installed inside the frequency converter, and the first fan is installed at the fan opening above the first surface in the housing, and the first surface and The back surface of the cabinet body is attached and the first fan is embedded in the first air outlet, so that the first fan discharges the heat in the cabinet body from the control cabinet through the first air outlet, thereby ensuring that the heat generated in the cabinet will not It affects other devices in the control cabinet, and realizes the efficient heat dissipation function of the control cabinet, thereby improving the service life of the control cabinet.

A second embodiment of the invention relates to a control cabinet. The second embodiment is a further improvement of the first embodiment. The main improvement is that: in the second embodiment of the present invention, the frequency converter unit 20 also includes: a partition plate 204, a rectifying heat dissipation unit 205, and an inverter heat dissipation unit 206 and electrolytic capacitor unit 207. The specific structure is shown in Figure 8.

Partition plate 204, rectification heat dissipation unit 205, inverter heat dissipation unit 206 and electrolytic capacitor unit 207 are arranged in the housing of frequency converter unit 20; The front end area 208 of the unit and the rear end area 209 of the frequency converter unit, the electrolytic capacitor unit 207 is placed in the front end area 208 of the frequency converter unit, the rectification heat dissipation unit 205 and the inverter heat dissipation unit 206 are placed in the rear end area 209 of the frequency converter unit, and the rectification heat dissipation unit 205 and the heat dissipation unit 206 are placed The inverter cooling unit 206 is fixed on the partition board 204 .

Specifically, the partition plate 204 should have the property of not conducting heat, so as to prevent the heat dissipated by the rectifying heat dissipation unit 205 and the inverter heat dissipation unit 206 from affecting the electrolytic capacitor unit. When the frequency converter unit 20 is normally placed in the cabinet body 101, the partition plate 204 divides the space in the housing of the frequency converter unit 20 into front and rear areas, and an electrolytic capacitor unit 207 is placed in the front end area 208 of the frequency converter unit. , as shown in Figure 9. The electrolytic capacitor unit 207 includes: an electrolytic capacitor and an electrolytic capacitor bracket, and the electrolytic capacitor is installed on the electrolytic capacitor bracket. The rectification and cooling unit 205 includes: a rectification unit and a radiator, the rectification unit is installed on the radiator, and the radiator is fixed on the partition plate 204 . The inverter cooling unit 206 includes: an inverter unit and a radiator, the inverter unit is installed on the radiator, and the radiator is fixed on the partition plate 204 .

In a possible implementation, the bottom of the inverter unit 20 is provided with a first vent 2021 and a second vent 2022; the first vent 2021 is located at the front end area 208 of the inverter unit, and the second vent 2022 is located at the front end area 208 of the inverter unit. backend area 209 .

Specifically, the first ventilation opening 2021 and the second ventilation opening 2022 are separated by the partition plate 204, and the air intake through the first ventilation opening 2021 is used in conjunction with the first fan 201 to facilitate the Heat dissipation of the device; the air is taken in through the second vent 2022 and used in conjunction with the first fan 201 to help the heat dissipation of the device located in the rear end area of the inverter unit. The positions of the first ventilation opening 2021 and the second ventilation opening 2022 are shown in FIG. 9 , which is a bottom plan view of the inverter unit 20 . The reasonable configuration of the air volume is realized through the first ventilation opening 2021 and the second ventilation opening 2022 .

It is worth mentioning that the frequency converter unit 20 further includes: a reactor 230 ; the reactor 230 is placed in the front end area 208 of the frequency converter unit and faces the first air vent 2021 . The reactor 230 also generates heat, and the reactor 230 is placed in the frequency converter unit front end region 208 . The heat dissipation process in the frequency converter is as follows: the first ventilation port 2021 and the second ventilation port 2022 respectively enter the air, the first fan is installed above the back surface of the housing of the frequency converter unit 20, and the first fan drives the wind flow, so as to realize heat dissipation to the inverter front end area 208 and the inverter rear end area 209 .

In the control cabinet provided in this embodiment, by setting a partition plate in the frequency converter unit, the heat dissipated by the rectification heat dissipation unit and the inverter heat dissipation unit is isolated, and the heat dissipated by the rectification heat dissipation unit and the inverter heat dissipation unit is avoided from making the electrolytic capacitor unit The temperature of the electrolytic capacitor in the battery increases, thereby increasing the service life of the electrolytic capacitor unit. In addition, the rectifier heat dissipation unit and the inverter heat dissipation unit are set separately, which avoids the direct superposition of the heat generated by the inverter unit and the rectifier unit, which affects the heat dissipation effect. At the same time, with the first ventilator and the second ventilator, the reasonable configuration of the air volume is realized; in addition, because the inverter unit is the main heat dissipation unit, the heat dissipation effect is high, and the heat generated by the reactor is much smaller than that of the rectifier unit and the inverter unit Therefore, placing the reactor directly in the inverter unit can effectively utilize the cooling device of the inverter unit and improve the heat dissipation effect of the entire control cabinet.

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific examples for realizing the present invention, and in practical applications, various changes can be made to it in form and details without departing from the spirit and spirit of the present invention. scope.

Claims (10)

1. A kind of 1. switch board, it is characterised in that including：Cabinet and frequency converter unit；

   The cabinet includes cabinet body and cabinet door, and the anterior and cabinet door of the cabinet body is detachably connected, the cabinet The top position of the back surfaces of body body is provided with the first air outlet, and first air outlet is installed for waterproof and dustproof First protector, wherein, the back of the cabinet body anterior parallel relative, cabinet body with the cabinet body Back surfaces top position for the cabinet body back surfaces close to the position of the cabinet bodies top；

   The frequency converter unit is placed on the inside of the cabinet body, and the frequency converter unit includes the first fan and housing, The top position of first surface in the housing sets fan mouth, and the fan mouth position is used to install described first Fan, the first surface is bonded with the back surfaces of the cabinet body and first fan is embedded in first air-out Mouthful, wherein, the top position of the first surface is tip position of the first surface close to the housing.
2. 2. switch board according to claim 1, it is characterised in that frequency converter unit also includes：Demarcation strip, rectification radiating are single Member, inversion heat-sink unit and electrochemical capacitor unit；

   The demarcation strip, the rectification heat-sink unit, the inversion heat-sink unit and the electrochemical capacitor unit are arranged on described In the housing of frequency converter unit；

   The demarcation strip, for by space where in the housing of the frequency converter unit be divided into frequency converter unit front end area and Frequency converter unit back-end region, the frequency converter unit front end area place the electrochemical capacitor unit, the frequency converter unit Back-end region places the rectification heat-sink unit, the inversion heat-sink unit, and the rectification heat-sink unit and inversion radiating are single Member is fixed on the demarcation strip.
3. 3. switch board according to claim 2, it is characterised in that the housing bottom of the frequency converter unit sets first to lead to Air port and the second ventilating opening；

   First ventilating opening is located at the frequency converter unit front end area, and second ventilating opening is located at the frequency converter unit Back-end region.
4. 4. switch board according to claim 3, it is characterised in that the frequency converter unit also includes：Reactor；The electricity Anti- device is placed on the frequency converter unit front end area, and the first ventilating opening described in face.
5. 5. switch board according to claim 1, it is characterised in that the switch board also includes：Main control unit；

   The first side of the main control unit position and the frequency converter unit is at a distance of the first pre-determined distance；

   The second side of the cabinet body sets the second air outlet, and second air outlet installs the second protector, wherein, The first side is relative with the second side.
6. 6. switch board according to any one of claim 1 to 4, it is characterised in that first protector includes：The One fan guard, the first air filtration cotton, metal plate and waterproof sealing packing ring；

   The first air filtration cotton is arranged on inside first fan guard, and first fan guard is fixed on the metal plate On, the metal plate is fixed on first air outlet position of the cabinet body, and the waterproof sealing packing ring is located at the metal plate Between golden and described cabinet body.
7. 7. switch board according to claim 5, it is characterised in that second protector, including：Radiator fan, Two fan guards, the second air filtration cotton；

   The second air filtration cotton is arranged on inside second fan guard, and the radiator fan is arranged on second fan On cover；

   Second fan guard is fixed on second air outlet position of cabinet body.
8. 8. switch board according to claim 1, it is characterised in that the bottom of the cabinet body sets the first air inlet, First air inlet installs the 3rd protector, and the 3rd protector includes the first shutter, the second shutter and the Three air filtration cottons；

   The 3rd air filtration cotton is arranged between first shutter and second shutter, first shutter It is to be detachably connected with second shutter.
9. 9. switch board according to claim 8, it is characterised in that the bottom of the frequency converter unit and the cabinet body Bottom at a distance of the second pre-determined distance, anterior and the cabinet body of the frequency converter unit it is anterior at a distance of the 3rd preset away from From.
10. 10. the switch board according to any one of claim 7 to 9, it is characterised in that the top of the cabinet body is set Draw ring, hang and install for the switch board.