Heat dissipation structure of high-low voltage switch cabinet

Abstract

The utility model relates to the technical field of switch cabinets, and discloses a high-low voltage switch cabinet heat radiation structure comprising a switch cabinet body, the front surface of the switch cabinet body is provided with an upper ventilation opening and a lower ventilation opening, the front surface of the switch cabinet body is provided with a dust cover, and the dust cover is located on the front surfaces of the ventilation openings. The lower end of the switch cabinet body is provided with an air exhaust assembly, the air exhaust assembly is located right behind the lower ventilation opening, the front end of the air exhaust assembly is communicated with the ventilation openings, and the rear end of the air exhaust assembly is connected with a flow guide assembly. According to the utility model, due to the arrangement of the diversion assembly, the windward area of the diversion member can be matched with the area of the inner cavity of the ventilation opening under the cooperation of the exhaust assembly, so that the downward projection surface of the switch cabinet can be rapidly filled with the entered airflow at the lower end of the switch cabinet through the diversion groove, and the airflow filled in the switch tube can rise simultaneously; therefore, the effect of preventing the barrier from blocking the airflow to enable the airflow to flow reversely is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, and more specifically, to a heat dissipation structure of a high and low voltage switch cabinet. Background Art

[0002] A switch cabinet is a control cabinet that assembles switchgear, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to electrical wiring requirements. Its layout should meet the requirements for normal operation of the power system, be easy to maintain, and not endanger the safety of people and surrounding equipment. During normal operation, the circuit can be connected or disconnected with the help of manual or automatic switches.

[0003] The existing heat dissipation structure of the switch cabinet is to set ventilation hoods at the lower and upper ends of the switch cabinet respectively, and then install a cooling fan to make the air flow in the switch cabinet continuously circulate from bottom to top to achieve the purpose of dissipating heat. However, the inner diameter of the vent is mostly smaller than the inner cavity size of the switch cabinet. In this way, once the low-temperature airflow at the bottom encounters an obstacle during its rising period, it will diffuse to the surroundings and flow downward in the opposite direction, interfering with the heat dissipation airflow from bottom to top, reducing the heat dissipation efficiency, so it needs to be improved. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a heat dissipation structure for a high and low voltage switch cabinet.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat dissipation structure of a high and low voltage switch cabinet, comprising a switch cabinet body, wherein the front of the switch cabinet body is provided with two upper and lower vents, a dust cover is installed on the front of the switch cabinet body, and the dust cover is located in front of the vents, an exhaust assembly is arranged at the lower end of the switch cabinet body, and the exhaust assembly is located directly behind a lower vent, the front end of the exhaust assembly is connected to the vent, and the rear end of the exhaust assembly is connected to a guide assembly;

[0006] The guide assembly includes a guide piece fixedly connected to the rear end of the exhaust assembly, and a plurality of evenly distributed guide grooves are opened inside the guide piece, and the extension lines of the tangent lines of the air outlet ends of the guide grooves fill the projection surface of the inner cavity of the switch cabinet body when viewed from above.

[0007] As a preferred technical solution of the utility model, the outer diameter of the guide member is matched with the inner diameter of the switch cabinet body, the cross-section of the guide member is fan-shaped, and the air outlet end of the guide groove extends to the arc surface of the fan-shaped guide member.

[0008] As a preferred technical solution of the utility model, the inner wall of the through hole on the dust cover is smooth, the cross section of the through hole is inclined, and the horizontal plane where one side of the through hole is located inside the switch cabinet body is above the horizontal plane where the other side is located.

[0009] As a preferred technical solution of the utility model, the exhaust assembly includes a connecting hood installed inside the vent, the inner wall of the connecting hood is smooth, the front end of the connecting hood is connected to the inner wall of the vent, and the rear end of the connecting hood is connected to the outer surface of the guide member.

[0010] As a preferred technical solution of the utility model, the inner diameter dimensions at both ends of the connecting cover are larger than the inner diameter dimension in the middle thereof, a motor fixing frame is fixedly sleeved in the middle of the connecting cover, a driving motor is fixedly installed inside the motor fixing frame, a front end of the output shaft of the driving motor extends to the back of the dust cover and is fixedly connected with an exhaust fan blade, and a controller is installed on the back of the driving motor.

[0011] As an optimal technical solution of the utility model, the distance between the outer side of the exhaust fan blade and the axis of the drive motor is greater than the inner diameter of the middle part of the connecting cover, and the distance between the outer side of the exhaust fan blade and the axis of the drive motor is smaller than the inner diameter of the two ends of the connecting cover.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. Due to the setting of the guide component of the utility model, the guide piece can make its windward area match the inner cavity area of ​​the vent in cooperation with the exhaust component, and then the incoming airflow can quickly fill its top projection surface at the lower end of the switch cabinet through the guide groove, ensuring that the airflow filled in the switch tube can rise at the same time, thereby achieving the effect of avoiding obstacles blocking the airflow and making it flow in the reverse direction.

[0014] 2. Due to the setting of the connecting cover, the utility model can make the air contact surface of the guide piece adapt to the size of the inner cavity of the vent, ensuring that the air inhaled at the vent can fill the guide piece as quickly as possible under the action of the exhaust component, so that all the guide grooves can guide the flow of air at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a partial schematic diagram of a side cross-section of the guide groove of the utility model;

[0017] Figure 3 for Figure 2 The structural diagram of the back side;

[0018] Figure 4 It is a cross-sectional view of the flow guide member of the utility model.

[0019] In the figure: 1. switch cabinet body; 2. vent; 3. dust cover; 4. exhaust assembly; 41. connecting cover; 42. motor fixing bracket; 43. drive motor; 44. exhaust fan blade; 5. guide assembly; 51. guide piece; 52. guide groove. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figures 1 to 4 As shown, the utility model provides a heat dissipation structure of a high and low voltage switch cabinet, comprising a switch cabinet body 1, wherein two upper and lower vents 2 are provided on the front of the switch cabinet body 1, a dust cover 3 is installed on the front of the switch cabinet body 1, and the dust cover 3 is located in front of the vent 2, and an exhaust component 4 is provided at the lower end of the switch cabinet body 1, and the exhaust component 4 is located directly behind a lower vent 2, and the front end of the exhaust component 4 is connected to the vent 2, and the rear end of the exhaust component 4 is connected to the guide component 5;

[0022] The guide component 5 includes a guide piece 51 fixedly connected to the rear end of the exhaust component 4, and a plurality of evenly distributed guide grooves 52 are opened inside the guide piece 51, and the extension line of the tangent line of the air outlet end of the guide groove 52 fills the top projection surface of the inner cavity of the switch cabinet body 1; due to the setting of the guide component 5, the guide piece 51 can make its windward area match the inner cavity area of ​​the vent 2 with the cooperation of the exhaust component 4, and then the incoming airflow can quickly fill its top projection surface at the lower end of the switch cabinet through the guide groove 52, ensuring that the airflow filled in the switch tube can rise at the same time, thereby achieving the effect of avoiding obstacles blocking the airflow and making it flow in the opposite direction.

[0023] Among them, the outer diameter of the guide member 51 is adapted to the inner diameter of the switch cabinet body 1, the cross-section of the guide member 51 is fan-shaped, and the air outlet end of the guide groove 52 extends to the fan-shaped arc surface of the guide member 51; due to the setting of the fan-shaped guide member 51, the direction of the air outlet end of the guide groove 52 can be conveniently controlled, thereby ensuring that the direction of the air outlet end of all guide grooves 52 can fill the projection surface of the inner cavity of the switch cabinet body 1 looking down.

[0024] The inner wall of the through hole on the dust cover 3 is smooth, the cross section of the through hole is inclined, and the horizontal plane where one side of the through hole is located inside the switch cabinet body 1 is located above the horizontal plane where the other side of the through hole is located.

[0025] Among them, the exhaust component 4 includes a connecting hood 41 installed inside the vent 2, the inner wall of the connecting hood 41 is smooth, the front end of the connecting hood 41 is connected to the inner wall of the vent 2, and the rear end of the connecting hood 41 is connected to the outer surface of the guide member 51; due to the setting of the connecting hood 41, the air contact surface of the guide member 51 can be adapted to the inner cavity size of the vent 2, ensuring that under the action of the exhaust component 4, the air inhaled at the vent 2 can fill the guide member 51 as quickly as possible, so that all the guide grooves 52 can guide the flow of air at the same time.

[0026] Among them, the inner diameter dimensions at both ends of the connecting cover 41 are larger than the inner diameter dimension in the middle, and a motor fixing frame 42 is fixedly sleeved in the middle of the connecting cover 41, and a driving motor 43 is fixedly installed inside the motor fixing frame 42. The front end of the output shaft of the driving motor 43 extends to the back of the dust cover 3 and is fixedly connected to the exhaust fan blades 44, and a controller is installed on the back of the driving motor 43.

[0027] The distance between the outer side of the exhaust fan blade 44 and the axis of the driving motor 43 is greater than the inner diameter of the middle of the connecting cover 41 , and the distance between the outer side of the exhaust fan blade 44 and the axis of the driving motor 43 is less than the inner diameter of the two ends of the connecting cover 41 .

[0028] The working principle and use process of this utility model:

[0029] Starting the device to run the driving motor 43 can drive the air flow through the exhaust fan blades 44 with the cooperation of the dust cover 3, and then with the cooperation of the connecting cover 41, the external low-temperature airflow can flow to the guide component 5 through the connecting cover 41, and then with the cooperation of the guide groove 52, the low-temperature airflow entering the bottom of the inner cavity of the switch cabinet can quickly fill the projection surface of the inner cavity of the switch cabinet when looking down, so as to avoid the situation where the airflow flows downward in the opposite direction when encountering an obstacle.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation structure for a high and low voltage switch cabinet, comprising a switch cabinet body (1), characterized in that: The switch cabinet body (1) is provided with two upper and lower ventilation openings (2) on the front side, a dust cover (3) is installed on the front side of the switch cabinet body (1), and the dust cover (3) is located on the front side of the ventilation opening (2); an exhaust assembly (4) is provided at the lower end of the switch cabinet body (1), and the exhaust assembly (4) is located directly behind a lower ventilation opening (2); the front end of the exhaust assembly (4) is connected to the ventilation opening (2), and the rear end of the exhaust assembly (4) is connected to a guide assembly (5); The flow guide assembly (5) comprises a flow guide member (51) fixedly connected to the rear end of the exhaust assembly (4); a plurality of evenly distributed flow guide grooves (52) are provided inside the flow guide member (51); and the extension lines of the tangent lines of the air outlet ends of the flow guide grooves (52) fill the projection surface of the inner cavity of the switch cabinet body (1) when viewed from above.

2. A heat dissipation structure for high and low voltage switch cabinets according to claim 1, characterized in that: The outer diameter of the flow guide (51) is matched to the inner diameter of the switch cabinet body (1); the cross section of the flow guide (51) is fan-shaped; and the air outlet end of the flow guide groove (52) extends to the arc surface of the fan-shaped flow guide (51).

3. The heat dissipation structure of a high and low voltage switch cabinet according to claim 1 is characterized in that: The inner wall of the through hole on the dust cover (3) is smooth, the cross section of the through hole is in an inclined state, and the horizontal plane where one side of the through hole is located inside the switch cabinet body (1) is located is above the horizontal plane where the other side of the through hole is located.

4. The heat dissipation structure of a high and low voltage switch cabinet according to claim 1 is characterized in that: The exhaust assembly (4) comprises a connecting hood (41) installed inside the ventilation opening (2); the inner wall of the connecting hood (41) is smooth; the front end of the connecting hood (41) is connected to the inner wall of the ventilation opening (2); and the rear end of the connecting hood (41) is connected to the outer surface of the guide member (51).

5. A heat dissipation structure for high and low voltage switch cabinets according to claim 4, characterized in that: The inner diameters of the two ends of the connecting cover (41) are larger than the inner diameter of the middle part thereof; the middle part of the connecting cover (41) is fixedly sleeved with a motor fixing frame (42); a driving motor (43) is fixedly installed inside the motor fixing frame (42); the front end of the output shaft of the driving motor (43) extends to the back of the dust cover (3) and is fixedly connected with exhaust fan blades (44); and a controller is installed on the back of the driving motor (43).

6. A heat dissipation structure for high and low voltage switch cabinets according to claim 5, characterized in that: The distance between the outer side of the exhaust fan blade (44) and the axis of the drive motor (43) is greater than the inner diameter of the middle of the connecting cover (41), and the distance between the outer side of the exhaust fan blade (44) and the axis of the drive motor (43) is less than the inner diameter of both ends of the connecting cover (41).

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