A high-efficiency heat dissipation inverter electric control cabinet

Abstract

The present application discloses an efficient heat dissipation inverter electric control cabinet, including a cabinet and an inverter, the cabinet having an installation through hole, the inverter embedded in the installation through hole, and the outlet of the inverter's heat dissipation airflow is located outside the cabinet. In the inverter electric control cabinet of the present application, the inverter adopts an embedded installation method, and the outlet of the inverter's heat dissipation airflow is located outside the cabinet, so that the inverter's heat dissipation airflow is directly discharged outside the cabinet, thereby achieving a better heat dissipation effect. And a protective cover is installed, through which the inverter can achieve a better protection effect, and the air guide plate can guide the airflow emitted by the inverter to the heat dissipation through hole and the openings at both ends to achieve rapid heat dissipation. In addition, a side plug plate can be installed. When the side plug plate is installed, the inverter can obtain a better protection effect. When it is not installed, the heat dissipation airflow can flow out from the openings at both ends of the protective cover to obtain a better heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the field of frequency converter electric control cabinets, and more specifically to an efficient heat dissipation frequency converter electric control cabinet. Background Art

[0002] The inverter electric control cabinet is a device used to control and protect the inverter. The inverter electric control cabinet is widely used in various occasions where the motor needs to be speed-controlled and protected. It usually includes electrical control components, protection components, display components, and wiring terminals, etc., which are used to electrically control and monitor the inverter.

[0003] In existing inverter electric control cabinets, the inverter is installed inside the cabinet. The inverter will generate a certain amount of heat during operation. These hot air flows will gather inside the cabinet, causing the internal temperature to rise. Especially in high temperature environments or when the inverter load is large, the heat dissipation efficiency will be further reduced, making it difficult to dissipate heat in a timely and effective manner. It may not be possible to effectively reduce the temperature inside the cabinet, causing the inverter temperature to be too high. When the inverter temperature exceeds the normal range, it may affect its stability and service life, and even cause equipment failure.

[0004] Usually, the heat dissipation of the inverter in the electric control cabinet will adopt the following forms: 1. Cooling under natural heat dissipation of the control cabinet (fully enclosed type); 2. Cooling through heat sinks (aluminum sheets, etc.); 3. Ventilation cooling (forced ventilation, pipe ventilation); 4. Install a special cabinet air conditioner and force supplementary cooling; 5. Cooling through a heat exchanger or cooler (heat pipe, cooler, etc.). These five heat dissipation methods all have certain problems and disadvantages: 1. Natural ventilation (closed, semi-open): low cost and widely used. When the capacity of the inverter increases, the size of the electrical cabinet also increases. Suitable for small-capacity inverters. Natural ventilation (fully enclosed): Because it is fully enclosed, it is most suitable for use in harsh environments with dust, oil mist, etc. The size of the electrical cabinet will increase depending on the capacity of the inverter. 2. Heat sink cooling: The installation location and area of ​​the heat sink are limited, which is suitable for small-capacity inverters. 3. Forced ventilation: Generally used when set up indoors, it can achieve miniaturization and low cost of electrical cabinets and is often used. 4. Cabinet air conditioner: specially designed for electrical cabinets, with excellent heat dissipation method, high cost, and cannot meet the heat dissipation requirements when the number and capacity of inverters are large. 5. Heat pipe: fully enclosed type can realize the miniaturization of electrical cabinets.

[0005] The fourth method is commonly used in current equipment, but it is too costly and cannot meet the requirements of multi-connected cabinets and large-capacity inverters. The internal temperature of the cabinet is continuously too high, which can easily cause the life of the inverter's semiconductors, components, capacitors, etc. to be significantly shortened. Utility Model Content

[0006] The utility model aims to overcome the defects of the prior art and provide an electric control cabinet for a frequency converter with high efficiency heat dissipation.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inverter electric control cabinet, comprising a cabinet body and an inverter, the cabinet body having an installation through hole, the inverter embedded in the installation through hole, and the outlet of the heat dissipation airflow of the inverter is located outside the cabinet body.

[0008] Furthermore, a protective cover fixedly connected to the cabinet is fixedly installed on the outside of the cabinet.

[0009] Therefore, the protective cover can effectively prevent external debris or foreign objects from affecting the inverter, thus providing safety protection.

[0010] Furthermore, the back and bottom of the protective cover are provided with a plurality of heat dissipation holes, and both ends of the protective cover are open.

[0011] This can effectively improve the heat dissipation effect and keep the inverter within the normal operating temperature range.

[0012] Furthermore, an air guide plate located above the frequency converter is installed in the protective cover.

[0013] The air guide plate helps guide the hot air to the heat dissipation holes and the open ends for discharge, thereby accelerating the transfer and dissipation of heat.

[0014] Furthermore, a protection frame fixedly connected to the cabinet is fixedly installed on the outside of the cabinet, and the protection frame is located inside the protection cover.

[0015] This can further protect the inverter from damage caused by collision with external objects, thereby improving the stability and safety of the equipment.

[0016] Furthermore, the protective cover includes a rectangular frame-shaped fixing frame fixedly connected to the cabinet, a top plate fixedly connected to the fixing frame, a bottom plate fixedly connected to the fixing frame, a back plate connecting the top plate and the bottom plate, and two side frame parts, and the side frame parts are fixedly connected to the fixing frame, the top plate, the bottom plate and the back plate; the air guide plate includes a first strip plate, a first inclined plate fixedly connected to the first strip plate, a second inclined plate fixedly connected to the first inclined plate, and a second strip plate fixedly connected to the second inclined plate, both ends of the first strip plate are fixedly connected with a first side convex plate, and the two first side convex plates are respectively fixedly connected to the two side frame parts, and both ends of the second strip plate are fixedly connected with a second side convex plate, and the two second side convex plates are respectively fixedly connected to the two side frame parts.

[0017] By fixing and connecting the various components, the connection between the entire protective cover and the air guide plate is made more stable, which can effectively protect the equipment from the influence of the external environment and at the same time has a good air guiding effect.

[0018] Furthermore, it also includes two L-shaped side plug plates; the two side frame parts of the protective cover are fixedly connected with L-shaped fixing parts, the L-shaped fixing parts have L-shaped slots, the side plug plates can be inserted into the L-shaped slots, and the top of the side plug plates has a handle part.

[0019] Therefore, the side plug-in plate can be easily installed and removed. After the side plug-in plate is installed, a better protection effect can be formed for the inverter, and after the side plug-in plate is removed, the heat dissipation effect can be increased.

[0020] Furthermore, the protection frame includes a protection plate and a plurality of connection legs fixedly connected to the protection plate, each connection leg has a connection foot fixedly connected to the cabinet; the protection plate has a plurality of rectangular through holes.

[0021] Therefore, the multiple rectangular through holes on the protective plate can achieve ventilation and heat dissipation.

[0022] Furthermore, the bottom plate has a plurality of heat dissipation through holes, and the back plate has a plurality of heat dissipation through holes; the fixing frame and the cabinet are fixed by first bolts.

[0023] Thereby, the protective cover is firmly fixed on the cabinet body, and is convenient for installation and maintenance.

[0024] Furthermore, the connecting foot and the cabinet are fixed by a second bolt.

[0025] Therefore, the protective frame is easy to disassemble and assemble, and is convenient for installation and maintenance.

[0026] Beneficial effects:

[0027] 1. In the inverter electric control cabinet of the present application, the inverter adopts an embedded installation method, and the air outlet of the inverter's heat dissipation airflow is located outside the cabinet, so that the inverter's heat dissipation airflow is directly discharged outside the cabinet, avoiding the heat dissipation airflow from affecting the temperature inside the cabinet, thereby achieving better heat dissipation effect.

[0028] 2. The embedded installation of the inverter uses the inverter cooling fan to directly discharge heat outside the cabinet, instead of into the cabinet, which causes heat accumulation. Its advantages are that the inverter installation position is pre-drilled during the production of the cabinet, which is low-cost and can solve the heat dissipation problem of the electric control cabinet; it can be produced once according to the capacity framework of the inverter; it is convenient for later maintenance and simple to operate; it is energy-saving and environmentally friendly in later use.

[0029] 3. The inverter electric control cabinet of the present application is equipped with a protective cover, so that the protective cover can achieve a better protection effect on the inverter, effectively blocking the influence of external debris or foreign matter on the inverter, and the air guide plate can guide the airflow emitted by the inverter to the heat dissipation holes and the openings at both ends to achieve rapid heat dissipation.

[0030] 4. The inverter electric control cabinet of the present application is equipped with a protective frame to further protect the inverter and avoid damage such as collision with external objects, thereby improving the stability and safety of the inverter.

[0031] 5. The inverter electric control cabinet of the present application can choose to install side plug plates according to the specific ambient temperature. When installed, the inverter can obtain better protection effect. When not installed, the heat dissipation airflow can flow out from the openings at both ends of the protective cover to obtain better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a heat dissipation method for the inverter in the prior art;

[0033] Figure 2 The heat dissipation method of the frequency converter of embodiment 1;

[0034] Figure 3 This is a structural schematic diagram of Example 1;

[0035] Figure 4 This is a schematic diagram of the structure of Example 2;

[0036] Figure 5 This is an enlarged view of area A;

[0037] Figure 6 This is a schematic diagram of the protective cover structure from the first perspective;

[0038] Figure 7 This is a schematic diagram of the protective cover structure from the second perspective.

[0039] Explanation of the reference numerals: 1 cabinet; 2 inverter; 2.1 air outlet; 3 protective cover; 3.1 heat dissipation hole; 3.2 fixing frame; 3.3 top plate; 3.4 bottom plate; 3.5 back plate; 3.6 side frame portion; 3.7 L-shaped fixing portion; 4 air guide plate; 4.1 first strip plate; 4.1.1 first side convex plate; 4.2 first inclined plate; 4.3 second inclined plate; 4.4 second strip plate; 4.4.1 second side convex plate; 5 protective frame; 5.1 protective plate; 5.1.1 rectangular through hole; 5.2 connecting leg; 5.3 connecting foot; 5.3.1 second bolt; 6 side plug plate; 6.1 handle portion. DETAILED DESCRIPTION

[0040] 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.

[0041] Example 1

[0042] This embodiment provides Figure 2-3 The illustrated high-efficiency heat dissipation inverter electric control cabinet comprises a cabinet 1 and an inverter 2, wherein the cabinet 1 has an installation through hole, the inverter 2 is embedded and installed in the installation through hole, and the heat dissipation airflow outlet 2.1 of the inverter is located outside the cabinet 1. A protective cover 3 fixedly connected to the cabinet 1 is fixedly installed on the outside of the cabinet 1. The back and bottom of the protective cover 3 are provided with a plurality of heat dissipation through holes 3.1, and the two ends of the protective cover 3 are open. An air guide plate 4 located above the inverter 2 is installed inside the protective cover 3.

[0043] Working principle: The existing installation structure is as follows: Figure 1 As shown, the heat dissipation airflow is located inside the cabinet, which is not conducive to the discharge of heat. In the inverter electric control cabinet of the present application, the inverter adopts an embedded installation method, and the outlet of the heat dissipation airflow of the inverter is located outside the cabinet, so that the heat dissipation airflow of the inverter is directly discharged outside the cabinet, avoiding the heat dissipation airflow from affecting the temperature inside the cabinet, thereby achieving a better heat dissipation effect. In addition, the protective cover can achieve a better protection effect on the inverter. There are no vents on the top of the protective cover to prevent foreign objects from falling into the protective cover, and the air guide plate can guide the airflow emitted by the inverter to the heat dissipation holes and the openings at both ends to achieve rapid heat dissipation.

[0044] Example 2

[0045] This embodiment provides Figure 4-7 The illustrated high-efficiency heat dissipation inverter electric control cabinet comprises a cabinet 1 and an inverter 2, wherein the cabinet 1 has an installation through hole, the inverter 2 is embedded and installed in the installation through hole, and the heat dissipation airflow outlet 2.1 of the inverter is located outside the cabinet 1. A protective cover 3 fixedly connected to the cabinet 1 is fixedly installed on the outside of the cabinet 1. The back and bottom of the protective cover 3 are provided with a plurality of heat dissipation through holes 3.1, and the two ends of the protective cover 3 are open. An air guide plate 4 located above the inverter 2 is installed inside the protective cover 3.

[0046] A protective frame 5 fixedly connected to the cabinet 1 is also fixedly installed on the outside of the cabinet 1, and the protective frame 5 is located in the protective cover 3. The protective frame 5 includes a protective plate 5.1 and a plurality of connecting legs 5.2 fixedly connected to the protective plate 5.1, each connecting leg 5.2 has a connecting foot 5.3 fixedly connected to the cabinet 1; the protective plate 5.1 has a plurality of rectangular through holes 5.1.1. The connecting foot 5.3 is fixed to the cabinet 1 by a second bolt 5.3.1.

[0047] The protective cover 3 includes a rectangular frame-shaped fixed frame 3.2 fixedly connected to the cabinet body 1, a top plate 3.3 fixedly connected to the fixed frame 3.2, a bottom plate 3.4 fixedly connected to the fixed frame 3.2, a back plate 3.5 connecting the top plate 3.3 and the bottom plate 3.4, and two side frame parts 3.6, wherein the side frame parts 3.6 are fixedly connected to the fixed frame 3.2, the top plate 3.3, the bottom plate 3.4 and the back plate 3.5; the air guide plate 4 includes a first strip plate 4.1, a second strip plate 4.4 fixedly connected to the first strip plate 4.1, and a second strip plate 4.5 fixedly connected to the first strip plate 4.1. A slanted plate 4.2, a second slanted plate 4.3 fixedly connected to the first slanted plate 4.2, and a second strip plate 4.4 fixedly connected to the second slanted plate 4.3, both ends of the first strip plate 4.1 are fixedly connected to first side convex plates 4.1.1, the two first side convex plates 4.1.1 are fixedly connected to two side frame parts 3.6, both ends of the second strip plate 4.4 are fixedly connected to second side convex plates 4.4.1, the two second side convex plates 4.4.1 are fixedly connected to two side frame parts 3.6. In addition, two L-shaped side plug plates 6 are also included; the two side frame parts 3.6 of the protective cover 3 are fixedly connected to L-shaped fixing parts 3.7, the L-shaped fixing parts 3.7 have L-shaped slots, the side plug plates 6 can be inserted into the L-shaped slots, and the top of the side plug plates 6 has a handle part 6.1. The bottom plate 3.4 has a plurality of heat dissipation holes, and the back plate 3.5 has a plurality of heat dissipation holes; the fixing frame 3.2 is fixed to the cabinet 1 by first bolts.

[0048] Working principle: The inverter electric control cabinet of the present application adopts an embedded installation method for the inverter, and the outlet of the inverter's heat dissipation airflow is located outside the cabinet, so that the inverter's heat dissipation airflow is directly discharged outside the cabinet, avoiding the heat dissipation airflow from affecting the temperature inside the cabinet, thereby achieving a better heat dissipation effect. The protective cover can also provide better protection for the inverter. There are no vents on the top of the protective cover to prevent foreign objects from falling into the protective cover, and the air guide plate can guide the airflow emitted by the inverter to the heat dissipation holes and the openings at both ends to achieve rapid heat dissipation.

[0049] The difference between Example 2 and Example 1 is that a protective frame and a side plug plate are added. The protective frame further protects the inverter, prevents the inverter from being damaged by collisions with external objects, and improves the stability and safety of the equipment. When the ambient temperature is not high, the side plug plate can be inserted to better protect the inverter. When the ambient temperature is high, the side plug plate can be removed, and the heat dissipation airflow can flow out from the openings at both ends of the protective cover to obtain a better heat dissipation effect, so that it can be flexibly installed according to actual needs.

[0050] Although the present invention has been illustrated and described with respect to preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. An efficient heat dissipation inverter electric control cabinet, characterized in that: The invention comprises a cabinet and a frequency converter, wherein the cabinet is provided with a mounting through hole, the frequency converter is embedded and mounted in the mounting through hole, and an air outlet of the heat dissipation airflow of the frequency converter is located outside the cabinet.

2. The high-efficiency heat dissipation inverter electric control cabinet according to claim 1 is characterized in that: A protective cover fixedly connected to the cabinet is fixedly installed on the outside of the cabinet.

3. The high-efficiency heat dissipation inverter electric control cabinet according to claim 2 is characterized in that: The back side and the bottom end of the protective cover are both provided with a plurality of heat dissipation through holes, and the two ends of the protective cover are open.

4. The high-efficiency heat dissipation inverter electric control cabinet according to claim 3 is characterized in that: An air guide plate located above the frequency converter is installed in the protective cover.

5. The high-efficiency heat dissipation inverter electric control cabinet according to claim 2 is characterized in that: A protection frame fixedly connected to the cabinet is also fixedly installed outside the cabinet, and the protection frame is located inside the protection cover.

6. The high-efficiency heat dissipation inverter electric control cabinet according to claim 4 is characterized in that: The protective cover includes a rectangular frame-shaped fixing frame fixedly connected to the cabinet, a top plate fixedly connected to the fixing frame, a bottom plate fixedly connected to the fixing frame, a back plate connecting the top plate and the bottom plate, and two side frame parts, and the side frame parts are fixedly connected to the fixing frame, the top plate, the bottom plate and the back plate; the air guide plate includes a first strip plate, a first inclined plate fixedly connected to the first strip plate, a second inclined plate fixedly connected to the first inclined plate, and a second strip plate fixedly connected to the second inclined plate, both ends of the first strip plate are fixedly connected with a first side convex plate, and the two first side convex plates are respectively fixedly connected to the two side frame parts, and both ends of the second strip plate are fixedly connected with a second side convex plate, and the two second side convex plates are respectively fixedly connected to the two side frame parts.

7. The high-efficiency heat dissipation inverter electric control cabinet according to claim 6 is characterized in that: It also includes two L-shaped side plug plates; the two side frame parts of the protective cover are fixedly connected with L-shaped fixing parts, the L-shaped fixing parts have L-shaped slots, the side plug plates can be inserted into the L-shaped slots, and the top ends of the side plug plates have handles.

8. The high-efficiency heat dissipation inverter electric control cabinet according to claim 5 is characterized in that: The protection frame comprises a protection plate and a plurality of connection legs fixedly connected to the protection plate, each connection leg has a connection foot fixedly connected to the cabinet; the protection plate has a plurality of rectangular through holes.

9. The high-efficiency heat dissipation inverter electric control cabinet according to claim 6, characterized in that: The bottom plate has a plurality of heat dissipation through holes, and the back plate has a plurality of heat dissipation through holes; the fixing frame is fixed to the cabinet body by a first bolt.

10. The high-efficiency heat dissipation inverter electric control cabinet according to claim 8, characterized in that: The connecting foot and the cabinet body are fixed by a second bolt.

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