Heat dissipation structure of APF (active power filter)

Abstract

The utility model discloses a heat dissipation structure of an active power filter (APF), which relates to the technical field of active power filters, and adopts the technical scheme that the heat dissipation structure comprises a box body, and a heat dissipation mechanism is arranged in the box body; the heat dissipation mechanism comprises a heat dissipation shell, the heat dissipation shell is arranged in the box body, a fixing plate is fixedly arranged in the heat dissipation shell, two motors are fixedly arranged on one side of the fixing plate, fan blades are fixedly connected to the output ends of the two motors, a limiting hole is formed in one side of the heat dissipation shell, and a limiting assembly is arranged on one side of the heat dissipation shell. The beneficial effects of the utility model are that the motor is started and drives the fan blades to rotate, so that heat in the box body is brought out by the fan blades through the heat dissipation holes, the filter screen on the other side of the box body is ventilated and intercepts dust at the same time, the heat dissipation efficiency is improved, the dust is prevented from entering the box body, and the pulleys at the top and the bottom of the heat dissipation shell roll on the sliding frame; the heat dissipation shell can be conveniently moved out of the box body, the heat dissipation mechanism can be conveniently maintained, and the maintenance work efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of active filters, in particular to an APF active filter heat dissipation structure. Background Art

[0002] Active power filter is a new type of power electronic device used for dynamically suppressing harmonics and compensating reactive power. It can compensate for harmonics of varying magnitude and frequency as well as varying reactive power. The reason why active filter is called active is that, as the name suggests, the device needs to provide power (to compensate for the harmonics of the main circuit). Its application can overcome the shortcomings of traditional harmonic suppression and reactive power compensation methods such as LC filters (traditional ones can only provide fixed compensation), realize dynamic tracking compensation, and can compensate for both harmonics and reactive power.

[0003] The existing APF active power filter heat dissipation mechanism is mostly arranged inside the APF active power filter. When the heat dissipation mechanism has problems, the APF active power filter needs to be opened first and then the heat dissipation mechanism is repaired. However, the internal space of the APF active power filter is small, which makes maintenance inconvenient and affects work efficiency. In addition, the heat dissipation mechanism of the APF active power filter is mostly equipped with a cooling fan, and the heat dissipation performance is relatively weak. Utility Model Content

[0004] To this end, the utility model provides an APF active filter heat dissipation structure to solve the problem of repairing the heat dissipation mechanism. However, the internal space of the APF active power filter is small, which makes maintenance inconvenient and affects work efficiency. Moreover, the heat dissipation mechanism of the APF active power filter is mostly equipped with a heat dissipation fan, and the heat dissipation performance is weak.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an APF active filter heat dissipation structure, comprising a box body, wherein a heat dissipation mechanism is provided inside the box body;

[0006] The heat dissipation mechanism includes a heat dissipation shell, which is arranged inside the box body. A fixing plate is fixed inside the heat dissipation shell, two motors are fixedly provided on one side of the fixing plate, and fan blades are fixedly connected to the output ends of the two motors. A limiting hole is opened on one side of the heat dissipation shell, and a limiting component is provided on one side of the heat dissipation shell.

[0007] Preferably, the limit assembly includes a limit housing, the limit housing is arranged inside the box body, the limit housing is connected with a threaded rod through a bearing, the threaded rod is outside provided with two threaded blocks through a threaded sleeve, the threads on both sides of the threaded rod are in opposite directions, one side of the two threaded blocks is movably connected with a connecting plate through a rotating shaft, one side of the two connecting plates is movably connected with the limit block through a rotating shaft, the limit block extends into the limit hole, the threaded rod is outside a fixed sleeve with a first bevel gear, the first bevel gear is provided with a second bevel gear on one side, the first bevel gear is meshed with the second bevel gear, the second bevel gear is fixedly connected with a transmission shaft on one side, the transmission shaft passes through the side wall of the limit housing and is connected to the limit housing through a bearing, and one end of the transmission shaft is fixedly connected with a knob.

[0008] Preferably, the top and bottom side walls of the inner cavity of the box body are both provided with sliding grooves, and the limiting shell slides in the sliding grooves.

[0009] Preferably, two limit rings are fixedly provided on the top and bottom of the heat dissipation shell, and pulleys are connected to the top and bottom of the heat dissipation shell through bearings. Two sliding rods are fixedly connected inside the box body, and the sliding rods pass through the limit rings and are slidably connected to the limit rings. Two slides are fixedly provided inside the box body, and the pulleys are in contact with the slides.

[0010] Preferably, a push-pull handle is fixedly provided on one side of the heat dissipation housing.

[0011] Preferably, four corners of the bottom of the box are fixedly connected with support columns, and two carrying handles are fixedly provided on the top of the box.

[0012] Preferably, a filter screen is embedded in one side of the box.

[0013] Preferably, a heat dissipation hole is provided on a side of the box away from the filter.

[0014] Preferably, one side of the box body is connected to a box door via a hinge, and one side of the box door is fixedly provided with a box door handle.

[0015] The utility model embodiment has the following advantages:

[0016] 1. The motor starts and drives the fan blades to rotate, so that the fan blades take out the heat inside the box through the heat dissipation holes. The filter on the other side of the box ventilates and intercepts dust, improving the heat dissipation efficiency and preventing dust from entering the box.

[0017] 2. By controlling the limit assembly to no longer limit the heat dissipation shell, the limit shell is pushed to make the limit shell slide to the other side of the slide groove, and the push-pull handle is pulled. The push-pull handle drives the heat dissipation shell to move, so that the limit rings at the top and bottom of the heat dissipation shell slide on the slide rod, and the pulleys at the top and bottom of the heat dissipation shell roll on the slide, which makes it convenient to move the heat dissipation shell out of the box, facilitates the maintenance of the heat dissipation mechanism, and improves the maintenance work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 The overall structural diagram provided by the utility model;

[0021] Figure 2 A schematic diagram of the internal structure of the housing provided by the utility model;

[0022] Figure 3 A three-dimensional diagram of the heat dissipation mechanism provided by the utility model;

[0023] Figure 4 A cross-sectional view of the heat dissipation mechanism provided by the utility model;

[0024] Figure 5 The utility model provides Figure 4 Enlarged view of the structure of part A in the middle.

[0025] In the figure: 1. box body; 2. box door; 3. support column; 4. carrying handle; 5. box door handle; 6. heat dissipation hole; 7. connecting plate; 8. limit block; 9. limit hole; 10. first bevel gear; 11. second bevel gear; 12. transmission shaft; 13. heat dissipation shell; 14. limit shell; 15. limit ring; 16. slide rod; 17. push-pull handle; 18. knob; 19. slide groove; 20. pulley; 21. slide; 22. fixing plate; 23. motor; 24. fan blade; 25. threaded rod; 26. threaded block; 27. filter. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See attached Figure 1 -Attached Figure 5 The utility model provides an APF active filter heat dissipation structure, comprising a box body 1, wherein a heat dissipation mechanism is provided inside the box body 1;

[0028] The heat dissipation mechanism includes a heat dissipation housing 13, the heat dissipation housing 13 is arranged inside the box 1, a fixing plate 22 is fixed inside the heat dissipation housing 13, two motors 23 are fixedly arranged on one side of the fixing plate 22, and fan blades 24 are fixedly connected to the output ends of the two motors 23, a limiting hole 9 is provided on one side of the heat dissipation housing 13, and a limiting component is provided on one side of the heat dissipation housing 13;

[0029] In this embodiment, the motor 23 is started and drives the fan blades 24 to rotate, so that the fan blades 24 take out the heat inside the box 1;

[0030] Among them, in order to achieve the purpose of convenient maintenance, the present device is implemented by the following technical solutions: the limit assembly includes a limit shell 14, the limit shell 14 is arranged inside the box body 1, the limit shell 14 is connected with a threaded rod 25 through a bearing inside, the threaded rod 25 is provided with two threaded blocks 26 on the outside through a threaded sleeve, the threads on both sides of the threaded rod 25 are rotated in opposite directions, one side of the two threaded blocks 26 is movably connected with a connecting plate 7 through a rotating shaft, one side of the two connecting plates 7 is movably connected with a limit block 8 through a rotating shaft, the limit block 8 extends into the limit hole 9, the threaded rod 25 is fixedly sleeved with a first bevel gear 10 on the outside, the first bevel gear 10 is provided with a second bevel gear 11 on one side, the first bevel gear 10 is meshed with the second bevel gear 11, the second bevel gear 11 is fixedly connected with a transmission shaft 12 on one side, the The transmission shaft 12 passes through the side wall of the limit housing 14 and is connected to the limit housing 14 through a bearing. A knob 18 is fixedly connected to one end of the transmission shaft 12. The top and bottom side walls of the inner cavity of the box body 1 are provided with slide grooves 19. The limit housing 14 slides in the slide grooves 19. By pulling the door handle 5, the door handle 5 drives the door 2 to rotate and open, and then the knob 18 is turned. The knob 18 drives the transmission shaft 12 to rotate, the transmission shaft 12 drives the second bevel gear 11 to rotate, the second bevel gear 11 drives the first bevel gear 10 to rotate, the first bevel gear 10 drives the threaded rod 25 to rotate, the threaded rod 25 drives the two threaded blocks 26 to move to both sides, so that the threaded block 26 drives the connecting plate 7 to move, and the connecting plate 7 drives the limit block 8 to move, so that the limit block 8 leaves the limit hole 9, and the limit assembly no longer limits the heat dissipation housing 13, so that the heat dissipation mechanism is convenient to be removed for maintenance;

[0031] Among them, in order to achieve the purpose of convenient movement, the present device is implemented by the following technical solutions: two limit rings 15 are fixedly provided on the top and bottom of the heat dissipation shell 13, and pulleys 20 are connected to the top and bottom of the heat dissipation shell 13 through bearings. Two slide bars 16 are fixedly connected inside the box body 1, and the slide bars 16 penetrate the limit rings 15 and are slidably connected to the limit rings 15. Two slide racks 21 are fixedly provided inside the box body 1, and the pulleys 20 are in contact with the slide racks 21. A push-pull handle 17 is fixedly provided on one side of the heat dissipation shell 13. When the push-pull handle 17 is pulled, the push-pull handle 17 drives the heat dissipation shell 13 to move, so that the limit rings 15 at the top and bottom of the heat dissipation shell 13 slide on the slide bars 16, and the pulleys 20 at the top and bottom of the heat dissipation shell 13 roll on the slide racks 21, so that the heat dissipation shell 13 is convenient to move out of the box body 1;

[0032] Among them, in order to achieve the purpose of support and transportation, the device is implemented by the following technical solution: the four corners of the bottom of the box body 1 are fixedly connected with support columns 3, and the top of the box body 1 is fixed with two carrying handles 4. The support columns 3 support the box body 1, and the carrying handles 4 facilitate the carrying of the box body 1;

[0033] In order to achieve the purpose of ventilation and heat dissipation, the device adopts the following technical solutions: a filter screen 27 is embedded on one side of the box body 1, and a heat dissipation hole 6 is opened on the side of the box body 1 away from the filter screen 27, and the heat is taken out through the heat dissipation hole 6. The filter screen 27 on the other side of the box body 1 is ventilated and dust is intercepted;

[0034] Among them, in order to achieve the purpose of opening, the present device is implemented by the following technical solution: one side of the box body 1 is connected to the box door 2 by a hinge, and one side of the box door 2 is fixedly provided with a box door handle 5. By pulling the box door handle 5, the box door handle 5 drives the box door 2 to rotate and open.

[0035] The use process of the utility model is as follows: when using the utility model, the motor 23 is started and drives the fan blades 24 to rotate, so that the fan blades 24 bring out the heat inside the box body 1 through the heat dissipation holes 6, and the filter screen 27 on the other side of the box body 1 is ventilated and intercepts dust. When the heat dissipation mechanism needs to be repaired, the box door handle 5 is pulled to make the box door handle 5 drive the box door 2 to rotate and open, and then the knob 18 is turned, the knob 18 drives the transmission shaft 12 to rotate, the transmission shaft 12 drives the second bevel gear 11 to rotate, the second bevel gear 11 drives the first bevel gear 10 to rotate, the first bevel gear 10 drives the threaded rod 25 to rotate, and the threaded rod 25 drives the two threaded blocks 26 to move to both sides, so that the threaded blocks 26 drive the connecting plate 7 to move, and the connecting plate 7 drives the limit block 8 to move, so that the limit block 8 leaves the limit hole 9, and the limit assembly no longer limits the heat dissipation shell 13, and then pushes the limit shell 14 to make the limit shell 14 slide to the other side of the slide groove 19, pulls the push-pull handle 17, and the push-pull handle 17 drives the heat dissipation shell 13 to move, so that the limit rings 15 at the top and bottom of the heat dissipation shell 13 slide on the slide rod 16, and the pulleys 20 at the top and bottom of the heat dissipation shell 13 roll on the slide 21, so that the heat dissipation shell 13 is convenient to move out of the box body 1, and the heat dissipation mechanism is convenient for maintenance.

[0036] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. An APF active filter heat dissipation structure, comprising a box (1), characterized in that: The box body (1) is provided with a heat dissipation mechanism inside; The heat dissipation mechanism comprises a heat dissipation shell (13), the heat dissipation shell (13) is arranged inside the box body (1), a fixing plate (22) is fixedly arranged inside the heat dissipation shell (13), two motors (23) are fixedly arranged on one side of the fixing plate (22), the output ends of the two motors (23) are fixedly connected to fan blades (24), a limiting hole (9) is provided on one side of the heat dissipation shell (13), and a limiting component is provided on one side of the heat dissipation shell (13).

2. The APF active filter heat dissipation structure according to claim 1, characterized in that: The limit assembly comprises a limit housing (14), the limit housing (14) being arranged inside the box body (1), the limit housing (14) being connected to a threaded rod (25) inside via a bearing, the threaded rod (25) being provided with two threaded blocks (26) outside via a threaded sleeve, the threads on both sides of the threaded rod (25) being rotated in opposite directions, one side of the two threaded blocks (26) being movably connected to a connecting plate (7) via a rotating shaft, one side of the two connecting plates (7) being movably connected to a limit block (8) via a rotating shaft, the limit block ( 8) extends into the interior of the limiting hole (9), the threaded rod (25) is externally fixedly sleeved with a first bevel gear (10), one side of the first bevel gear (10) is provided with a second bevel gear (11), the first bevel gear (10) is meshed with the second bevel gear (11), one side of the second bevel gear (11) is fixedly connected with a transmission shaft (12), the transmission shaft (12) passes through the side wall of the limiting housing (14) and is connected to the limiting housing (14) through a bearing, and one end of the transmission shaft (12) is fixedly connected with a knob (18).

3. The APF active filter heat dissipation structure according to claim 2, characterized in that: The top and bottom side walls of the inner cavity of the box body (1) are both provided with sliding grooves (19), and the limiting shell (14) slides in the sliding grooves (19).

4. The APF active filter heat dissipation structure according to claim 1, characterized in that: Two limiting rings (15) are fixedly provided at the top and bottom of the heat dissipation shell (13), and pulleys (20) are connected to the top and bottom of the heat dissipation shell (13) through bearings. Two sliding rods (16) are fixedly connected inside the box body (1), and the sliding rods (16) pass through the limiting rings (15) and are slidably connected to the limiting rings (15). Two sliding racks (21) are fixedly provided inside the box body (1), and the pulleys (20) are in contact with the sliding racks (21).

5. The APF active filter heat dissipation structure according to claim 1, characterized in that: A push-pull handle (17) is fixedly provided on one side of the heat dissipation housing (13).

6. The APF active filter heat dissipation structure according to claim 1, characterized in that: The four corners of the bottom of the box body (1) are fixedly connected to support columns (3), and the top of the box body (1) is fixedly provided with two carrying handles (4).

7. The APF active filter heat dissipation structure according to claim 1, characterized in that: A filter screen (27) is embedded on one side of the box body (1).

8. The APF active filter heat dissipation structure according to claim 7, characterized in that: A heat dissipation hole (6) is provided on the side of the box body (1) away from the filter screen (27).

9. The APF active filter heat dissipation structure according to claim 1, characterized in that: One side of the box body (1) is connected to a box door (2) via a hinge, and one side of the box door (2) is fixedly provided with a box door handle (5).

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