High-low voltage power distribution cabinet heat dissipation device

Abstract

The application discloses a high-low voltage power distribution cabinet heat dissipation device and belongs to the technical field of power distribution cabinets. The device comprises a cabinet body, a cabinet door hinged to the front end face of the cabinet body, a ventilation opening formed in the right end face of the cabinet body, a ventilation fan arranged in the ventilation opening, an inner cavity formed in the cabinet body, a fixing sleeve fixedly installed in the ventilation opening, and a mounting mechanism arranged in the inner cavity. The mounting mechanism comprises a threaded rod rotationally connected to the inner cavity, and a motor fixedly installed on the inner wall of the inner cavity. The output shaft of the motor is fixedly connected with the threaded rod. The device is provided with a mechanical transmission and multiple fixing mechanisms, thereby ensuring the reliability of the ventilation fan and the convenience of disassembly. The device is compact in structure and integrated in the cabinet body, and is particularly suitable for high-low voltage power distribution cabinets that require reliable heat dissipation and convenient maintenance. The device significantly improves the fixing reliability, disassembly convenience and heat dissipation effect, and reduces the maintenance cost and time.

Description

Technical Field

[0001] This invention relates to the field of power distribution cabinet technology, and more specifically, to a heat dissipation device for high and low voltage power distribution cabinets. Background Technology

[0002] High and low voltage switchgear, as crucial equipment in power systems, industrial control, and building power distribution, relies on cooling systems that dissipate heat generated inside the cabinet through ventilation fans and other heat dissipation components. This ensures the normal operation of electrical components and the safety of the equipment. Traditional cooling systems for high and low voltage switchgear mainly include natural ventilation, forced ventilation, and air conditioning. These systems often employ simple vent designs or a single fixed ventilation fan. While these traditional systems can meet basic cooling requirements to some extent, they still fall short in terms of ease of installation, maintenance efficiency, and reliability. This is especially true for modern high and low voltage switchgear applications requiring frequent maintenance and rapid fan replacement; traditional systems often fail to meet these requirements, leading to poor cooling performance, low maintenance efficiency, and unstable equipment operation.

[0003] Traditional high and low voltage switchgear cooling devices mostly use simple bolt or clip fixing methods, which are cumbersome to install, require professional tools and skills, and are difficult to disassemble and maintain. Although existing high and low voltage switchgear cooling devices can provide basic cooling functions, they mostly use a single fixing method, and the installation and disassembly process is time-consuming and labor-intensive, making it difficult to meet the needs of rapid maintenance and emergency repairs. In addition, for switchgear that requires frequent replacement or maintenance of ventilation fans, traditional installation methods often cannot meet the requirements, resulting in low maintenance efficiency, long equipment downtime, and poor heat dissipation. Especially in industrial plants, data centers, power systems, and other places with strict requirements for switchgear heat dissipation, the reliability and convenience of ventilation fan installation devices are even higher, and traditional installation methods cannot meet the comprehensive requirements, resulting in high equipment failure rates, increased maintenance costs, and reduced operating efficiency. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a heat dissipation device for high and low voltage distribution cabinets, which can realize the quick installation and disassembly of ventilation fans.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A heat dissipation device for high and low voltage distribution cabinets includes a cabinet body with a door hinged to the front end. A ventilation opening is provided on the right end of the cabinet body, and a ventilation fan is installed inside the ventilation opening. An inner cavity is provided inside the cabinet body, and a fixing sleeve is fixedly installed inside the ventilation opening. An installation mechanism is provided inside the inner cavity. The installation mechanism includes a threaded rod rotatably connected inside the inner cavity. A motor is fixedly installed on the inner wall of the inner cavity, and the output shaft of the motor is fixedly connected to the threaded rod. The installation mechanism also includes transmission components on both sides of the threaded rod. Each transmission component includes threaded sleeves screwed onto both ends of the outer surface of the threaded rod. Connecting rods are rotatably connected to both sides of the outer surface of the threaded sleeves. Connecting members are provided on both sides of the threaded rod, and two sets of connecting rods on the same side are rotatably connected to corresponding connecting members.

[0007] A rack is fixedly installed on the outer side of the connector. A groove is formed on the upper end face of the rack. A slider is slidably connected inside the groove. The slider is fixedly connected to the inner wall of the inner cavity.

[0008] The installation mechanism also includes a connector disposed inside the vent, the connector including a toothed ring rotatably connected to the outer surface of the fixed sleeve, the toothed ring engaging with the rack.

[0009] A wedge is fixedly installed on the inner wall of the toothed ring. A protrusion is provided on the inner side of the wedge. A plug is fixedly installed on the inner side of the protrusion. A spring is fixedly installed between the protrusion and the fixed sleeve. The spring is fitted on the outer surface of the plug. A slot is correspondingly opened on the outer surface of the ventilation fan.

[0010] The wedge, protrusion, insert, slot, and spring are each provided in three sets, arranged in a ring.

[0011] The installation mechanism also includes a snap-fit ​​component disposed on the lower side of the toothed ring. The snap-fit ​​component includes a wedge block two fixedly installed on the lower end face of the toothed ring. A groove is opened on the outer surface of the fixing sleeve. A fixing rod is fixedly installed inside the groove. A transmission rod is rotatably connected to the outer surface of the fixing rod.

[0012] The transmission rod is L-shaped, with one end of the transmission rod corresponding to the second wedge. A slot is provided on the outer surface of the ventilation fan, corresponding to the other end of the transmission rod. A second spring is fixedly installed between the transmission rod and the fixed sleeve.

[0013] The wedge block 2, the slot, the fixing rod, the transmission rod, the spring 2, and the slot are each provided in three sets, and are arranged in a ring-shaped dispersion.

[0014] The installation mechanism also includes a limiting member disposed at one end of the rack. The limiting member includes a push plate fixedly installed at the end of the rack, and an airbag is fixedly installed between the push plate and the inner wall of the inner cavity.

[0015] A sleeve is provided on the right side of the vent, the sleeve is fixedly connected to the cabinet, a limit plate is slidably connected inside the sleeve, and the sleeve is in communication with the airbag.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution uses a mechanical transmission and multiple fixing mechanism to ensure the reliability of the ventilation fan fixing and the convenience of disassembly; the whole device has a compact structure and is integrated inside the cabinet, which is particularly suitable for high and low voltage distribution cabinets that require reliable heat dissipation and convenient maintenance. It significantly improves the fixing reliability, disassembly convenience and heat dissipation effect, and reduces maintenance costs and time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional view of the mechanism of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 For the present invention Figure 4 Enlarged view of point C in the middle; Figure 7 This is a cross-sectional view of the mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged diagram of point D in the middle.

[0018] Explanation of the labels in the diagram: 1. Cabinet body; 2. Cabinet door; 3. Ventilation opening; 4. Inner cavity; 5. Ventilation fan; 6. Fixing sleeve; 7. Motor; 8. Threaded rod; 9. Threaded sleeve; 10. Connector; 11. Connecting rod; 12. Rack; 13. Slide groove; 14. Slider; 15. Gear ring; 16. Wedge one; 17. Protrusion; 18. Insert rod; 19. Slot; 20. Spring one; 21. Wedge two; 22. Groove; 23. Fixing rod; 24. Transmission rod; 25. Spring two; 26. Slot; 27. Push plate; 28. Airbag; 29. ​​Sleeve; 30. Limiting plate. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 8 A heat dissipation device for high and low voltage distribution cabinets includes a cabinet body 1, a cabinet door 2 hinged to the front end face of the cabinet body 1, a ventilation opening 3 on the right end face of the cabinet body 1, a ventilation fan 5 installed inside the ventilation opening 3, an inner cavity 4 inside the cabinet body 1, a fixing sleeve 6 fixedly installed inside the ventilation opening 3, and an installation mechanism installed inside the inner cavity 4. The inner cavity 4 is the main space for equipment installation; the fixing sleeve 6 is a stainless steel insert, pre-embedded in the inner wall of the ventilation opening 3, serving as the mounting base for all positioning components to ensure that it does not deform during long-term use.

[0021] The mounting mechanism includes a threaded rod 8 that is rotatably connected inside the inner cavity 4. A motor 7 is fixedly mounted on the inner wall of the inner cavity 4, and the output shaft of the motor 7 is fixedly connected to the threaded rod 8.

[0022] The mounting mechanism also includes transmission components on both sides of the threaded rod 8. The transmission components include threaded sleeves 9 at both ends of the outer surface of the threaded rod 8, and connecting rods 11 rotatably connected to both sides of the outer surface of the threaded sleeves 9. The threads at both ends of the threaded rod 8 have opposite directions of rotation, so when rotating in one direction, the two threaded sleeves 9 move synchronously towards or away from each other.

[0023] Both sides of the threaded rod 8 are provided with connecting parts 10, and the two sets of connecting rods 11 on the same side are rotatably connected to the corresponding connecting parts 10.

[0024] The connector 10 is a U-shaped fork lug, welded to the back of the rack 12; the four-bar linkage 11 amplifies the linear motion of the threaded sleeve 9 and transmits it to the rack 12, providing stable thrust.

[0025] A rack 12 is fixedly installed on the outer side of the connector 10. A groove 13 is provided on the upper end face of the rack 12. A slider 14 is slidably connected inside the groove 13. The slider 14 is fixedly connected to the inner wall of the inner cavity 4.

[0026] The slide groove 13 and the slider 14 form a linear guide pair, which constrains the rack 12 to move only horizontally and prevents it from deflecting and getting stuck.

[0027] The mounting mechanism also includes a connector disposed inside the vent 3. The connector includes a toothed ring 15 rotatably connected to the outer surface of the fixing sleeve 6, and the toothed ring 15 meshes with the rack 12.

[0028] A wedge 16 is fixedly installed on the inner wall of the toothed ring 15. A protrusion 17 is provided on the inner side of the wedge 16. A plug rod 18 is fixedly installed on the inner side of the protrusion 17. A spring 20 is fixedly installed between the protrusion 17 and the fixing sleeve 6. The spring 20 is sleeved on the outer surface of the plug rod 18. A slot 19 is correspondingly opened on the outer surface of the ventilation fan 5.

[0029] Wedge 16 is a sloping cam; protrusion 17 has a guide hole; the front end of insertion rod 18 is chamfered for easy insertion; spring 20 is a compression spring that pulls insertion rod 18 out under normal conditions; slot 19 is a blind hole that fits precisely with insertion rod 18.

[0030] The wedge block 16, protrusion 17, insertion rod 18, slot 19 and spring 20 are each provided in three sets and are arranged in a ring.

[0031] The 120° evenly distributed three-point centering connection can automatically center even if the ventilation fan 5 is slightly off-center, and the clamping force is evenly distributed.

[0032] The mounting mechanism also includes a snap-fit ​​component on the lower side of the toothed ring 15. The snap-fit ​​component includes a wedge 21 fixedly installed on the lower end face of the toothed ring 15. A groove 22 is opened on the outer surface of the fixing sleeve 6. A fixing rod 23 is fixedly installed inside the groove 22. A transmission rod 24 is rotatably connected to the outer surface of the fixing rod 23.

[0033] Wedge 21 rotates synchronously with gear ring 15; slot 22 is a radial countersunk hole; fixed rod 23 is a pin; transmission rod 24 swings around it to realize the conversion of force direction.

[0034] The transmission rod 24 is L-shaped, with one end of the transmission rod 24 corresponding to the wedge block 21. The outer surface of the ventilation fan 5 has a slot 26, which corresponds to the other end of the transmission rod 24. A spring 25 is fixedly installed between the transmission rod 24 and the fixed sleeve 6.

[0035] The short arm of the L-shaped transmission rod 24 is pushed by the second wedge block 21, and the long arm is inserted into the slot 26; the second spring 25 is a torsion spring or a tension spring, which normally disengages the transmission rod 24 from the slot 26.

[0036] Three sets of wedge 21, slot 22, fixing rod 23, transmission rod 24, spring 25 and slot 26 are respectively provided and arranged in a ring.

[0037] Three sets of locking contacts provide circumferential torsional resistance to prevent the ventilation fan 5 from loosening due to vibration.

[0038] The mounting mechanism also includes a limiting member disposed at one end of the rack 12. The limiting member includes a push plate 27 fixedly mounted at the end of the rack 12, and an airbag 28 is fixedly mounted between the push plate 27 and the inner wall of the inner cavity 4.

[0039] The push plate 27 is a rubber-coated steel plate; the airbag 28 is a flexible rubber bladder that compresses / expands as the push plate 27 moves.

[0040] A sleeve 29 is provided on the right side of the vent 3. The sleeve 29 is fixedly connected to the cabinet 1. A limit plate 30 is slidably connected inside the sleeve 29. The sleeve 29 is connected to the airbag 28.

[0041] Sleeve 29 is made of aluminum alloy tube; the front end of the limiting plate 30 has a silicone pad to prevent scratching the ventilation fan 5; the air passage is fully sealed to ensure effective transmission of negative / positive pressure.

[0042] Instructions for use: This high and low voltage switchgear heat dissipation device is used for heat dissipation and ventilation of high and low voltage switchgear, providing quick installation and convenient disassembly of the ventilation fan 5. Through a unique mechanical transmission mechanism and multiple fixing systems, this device achieves reliable fixing and quick replacement of the ventilation fan 5, improving the reliability of heat dissipation and ease of maintenance of the switchgear.

[0043] When using the ventilation fan 5, if it is necessary to install it inside the ventilation opening 3, first insert the ventilation fan 5 into the ventilation opening 3. Both the ventilation fan 5 and the interior of the ventilation opening 3 are equipped with electrical contacts to supply power and activate the ventilation fan 5.

[0044] Then, the motor 7 is started, causing the threaded rod 8 to rotate. Both ends of the outer surface of the threaded rod 8 are helically driven with threaded sleeves 9. The threaded rod 8 has two sets of symmetrical thread structures, so the two sets of threaded sleeves 9 connected by the helical drive on the threaded rod 8 will move towards each other.

[0045] Both sides of the outer surface of the threaded sleeve 9 are rotatably connected to connecting rods 11, and both sides of the threaded rod 8 are provided with connecting parts 10. The two sets of connecting rods 11 on the same side are rotatably connected to the corresponding connecting parts 10, thus driving the rack 12 to move.

[0046] A groove 13 is provided on the upper end face of the rack 12. A slider 14 is slidably connected inside the groove 13. The slider 14 is fixedly connected to the inner wall of the inner cavity 4 to perform sliding limit function.

[0047] When the rack 12 moves, the toothed ring 15 that meshes with the rack 12 will rotate, and the toothed ring 15 will carry the first wedge 16 and the second wedge 21 to rotate.

[0048] The wedge 16 rotates, pressing the protrusion 17 on the insertion rod 18, which in turn compresses the spring 20 and drives the insertion rod 18 to insert into the slot 19. Three sets of wedges, protrusions 17, insertion rods 18, slots 19, and springs 20 are arranged in a ring. The three sets of insertion rods 18 are simultaneously inserted into their corresponding slots 19 for connection and fixation, thus allowing the ventilation fan 5 to be connected and fixed.

[0049] Secondly, as wedge 21 moves, it gradually transmits power to the transmission rod 24 rotatably connected to the fixed rod 23. This causes the transmission rod 24 to deflect around the fixed rod 23 and pull the spring 25, placing one end of the transmission rod 24 inside the slot 26. Three sets of wedge 21, slot 22, fixed rod 23, transmission rod 24, spring 25, and slot 26 are provided in a circular arrangement. The three sets of transmission rods 24 are respectively engaged in the corresponding slots 26, thus securing the ventilation fan 5.

[0050] Secondly, the movement of the rack 12 will drive the push plate 27 to squeeze the airbag 28, allowing the gas inside the airbag 28 to enter the sleeve 29, thereby extending the limiting plate 30 that is slidably connected inside the sleeve 29 and placing it on one side of the ventilation fan 5, thus preventing the ventilation fan 5 from falling out of the vent 3.

[0051] This allows for the quick installation of the ventilation fan 5. When disassembly is required, the motor 7 is started in reverse, the threaded rod 8 is reversed, which resets the rack 12. Spring 1 20 and spring 2 25 also elastically deform and reset, causing the insertion rod 18 to be pushed out of the slot 19, the transmission rod 24 to be pushed out of the slot 26, and the limit plate 30 to retract the sleeve 29, allowing the ventilation fan 5 to be removed.

[0052] Through the aforementioned mechanical transmission and multiple fixing mechanisms, the heat dissipation device of the high and low voltage distribution cabinet can achieve rapid installation and convenient disassembly of the ventilation fan 5, meeting the comprehensive requirements of high and low voltage distribution cabinets for heat dissipation reliability and maintenance convenience.

[0053] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A heat dissipation device for high and low voltage distribution cabinets, comprising a cabinet (1), characterized in that: The cabinet (1) has a cabinet door (2) hinged to its front end. The right end of the cabinet (1) has a ventilation opening (3). A ventilation fan (5) is installed inside the ventilation opening (3). The cabinet (1) has an inner cavity (4). A fixing sleeve (6) is fixedly installed inside the ventilation opening (3). An installation mechanism is installed inside the inner cavity (4). The installation mechanism includes a threaded rod (8) rotatably connected inside the inner cavity (4). A motor (7) is fixedly installed on the inner wall of the inner cavity (4). The output shaft of the motor (7) is fixedly connected to the threaded rod (8). The installation mechanism also includes transmission components on both sides of the threaded rod (8). The transmission components include threaded sleeves (9) spirally driven at both ends of the outer surface of the threaded rod (8). A connecting rod (11) is rotatably connected to both sides of the outer surface of the threaded sleeve (9). A connecting piece (10) is provided on both sides of the threaded rod (8). The two sets of connecting rods (11) on the same side are rotatably connected to the corresponding connecting piece (10).

2. The heat dissipation device for high and low voltage distribution cabinets according to claim 1, characterized in that: A rack (12) is fixedly installed on the outer side of the connector (10). A groove (13) is provided on the upper end face of the rack (12). A slider (14) is slidably connected inside the groove (13). The slider (14) is fixedly connected to the inner wall of the inner cavity (4).

3. The heat dissipation device for high and low voltage distribution cabinets according to claim 2, characterized in that: The installation mechanism also includes a connector disposed inside the vent (3), the connector including a toothed ring (15) rotatably connected to the outer surface of the fixing sleeve (6), the toothed ring (15) meshing with the rack (12).

4. A heat dissipation device for high and low voltage distribution cabinets according to claim 3, characterized in that: A wedge (16) is fixedly installed on the inner wall of the toothed ring (15). A protrusion (17) is provided on the inner side of the wedge (16). A plug (18) is fixedly installed on the inner side of the protrusion (17). A spring (20) is fixedly installed between the protrusion (17) and the fixing sleeve (6). The spring (20) is sleeved on the outer surface of the plug (18). A slot (19) is correspondingly opened on the outer surface of the ventilation fan (5).

5. A heat dissipation device for high and low voltage distribution cabinets according to claim 4, characterized in that: The wedge (16), protrusion (17), insertion rod (18), slot (19) and spring (20) are each provided in three sets and are arranged in a ring.

6. A heat dissipation device for high and low voltage distribution cabinets according to claim 5, characterized in that: The installation mechanism also includes a snap-fit ​​component provided on the lower side of the toothed ring (15). The snap-fit ​​component includes a wedge block (21) fixedly installed on the lower end face of the toothed ring (15). A groove (22) is opened on the outer surface of the fixing sleeve (6). A fixing rod (23) is fixedly installed inside the groove (22). A transmission rod (24) is rotatably connected to the outer surface of the fixing rod (23).

7. A heat dissipation device for high and low voltage distribution cabinets according to claim 6, characterized in that: The transmission rod (24) is L-shaped. One end of the transmission rod (24) is corresponding to the wedge block (21). The outer surface of the ventilation fan (5) is provided with a slot (26). The slot (26) is corresponding to the other end of the transmission rod (24). A spring (25) is fixedly installed between the transmission rod (24) and the fixed sleeve (6).

8. A heat dissipation device for high and low voltage distribution cabinets according to claim 7, characterized in that: The wedge block 2 (21), the slot (22), the fixing rod (23), the transmission rod (24), the spring 2 (25), and the slot (26) are all provided in three sets, and are arranged in a ring-shaped dispersion.

9. A heat dissipation device for high and low voltage distribution cabinets according to claim 8, characterized in that: The installation mechanism also includes a limiting member disposed at one end of the rack (12), the limiting member including a push plate (27) fixedly installed at the end of the rack (12), and an airbag (28) fixedly installed between the push plate (27) and the inner wall of the inner cavity (4).

10. A heat dissipation device for high and low voltage distribution cabinets according to claim 9, characterized in that: A sleeve (29) is provided on the right side of the ventilation opening (3). The sleeve (29) is fixedly connected to the cabinet (1). A limit plate (30) is slidably connected inside the sleeve (29). The sleeve (29) is connected to the airbag (28).

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