Three-proofing totally-enclosed frequency converter

Abstract

The utility model relates to the technical field of totally-enclosed frequency converters, and discloses a three-proofing totally-enclosed frequency converter, which comprises a three-proofing frequency converter body, the back surface of the three-proofing frequency converter body is fixedly connected with two mounting plates through four cross rods, and a copper plate is embedded in the middle of the back surface of the three-proofing frequency converter body. A normally-open temperature control switch and a plurality of fins are fixedly arranged on the surface of the copper plate, an air inlet and an air outlet are formed in the bottom end of the three-proofing frequency converter body and the top of one side of the three-proofing frequency converter body respectively, and a filter box and an exhaust pipe are fixedly arranged at the bottom end of the air inlet and one side of the air outlet respectively. Heat in the three-proofing frequency converter body can be absorbed through the copper plate, heat exchange with outside air can be achieved through the fins, the temperature in the three-proofing frequency converter body can be reduced, and when the temperature of the copper plate is higher than the threshold value of the normally-open temperature control switch, the normally-open temperature control switch can control the induced draft fan to actively work; the draft fan can exhaust air in the three-proofing frequency converter body, and the blocking cover is opened.

Description

Technical Field

[0001] The utility model relates to the technical field of fully enclosed frequency converters, in particular to a three-proof fully enclosed frequency converter. Background Art

[0002] The inverter industry has developed to this day, and the technology is constantly innovating and developing according to user needs. The development has evolved from a single type to miniaturization, integration, modularization, intelligence, high performance, multi-function, and more stable. Step by step, it follows the development of the times and advances into different industries. The triple-proof fully enclosed inverter is an inverter that can work normally in harsh environments. It usually has the characteristics of waterproof, dustproof, and corrosion-resistant. This inverter is widely used in mining, ocean, petrochemical and other fields, and can ensure the safe operation of equipment in harsh environments.

[0003] The existing fully enclosed inverter can refer to the Chinese utility model patent with the authorization announcement number CN213402803U, which discloses a three-proof fully enclosed inverter, "including an inverter body, the left and right sides of the inverter body are provided with heat dissipation holes and thread grooves, the left and right sides of the inverter body are provided with fixing parts, the fixing parts are hinged with baffles, the inner side of the baffle is fixedly installed with a rubber layer, the top of the baffle is fixedly installed with a fixing block, the middle of the fixing block is provided with a round hole, the A horizontal column is provided in the circular hole, a cylindrical block is fixedly installed at the right end of the horizontal column, and a connecting piece is provided on the side wall of the horizontal column. The utility model hinges baffles on both sides of the inverter body, a rubber layer is installed on the inner side of the baffle, and a fixing block with a stud is provided on the top of the baffle. The stud can be screwed into the thread groove of the side wall of the inverter body, so that the rubber layer fits on both sides of the inverter body, avoids the heat dissipation holes, and prevents water vapor and dust from entering the inverter body, ensuring the normal use of internal components.

[0004] When the above-mentioned equipment is in use, the staff is required to rotate the cylindrical block to disengage the stud from the threaded groove, and then flip the baffle to manually open the heat dissipation hole. This is inconvenient to operate. If the operation is not timely, it is easy to cause heat accumulation inside the inverter body. The heat dissipation effect is poor by using natural heat dissipation. When the heat dissipation holes are opened, dust and moisture can easily enter the interior of the inverter body through the heat dissipation holes, resulting in poor dust prevention effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a three-proof fully enclosed inverter, which has the advantages of convenient operation, good heat dissipation effect and dustproof effect, and solves the problems raised by the above background technology.

[0006] The utility model provides the following technical solutions: a three-proof fully enclosed inverter, comprising a three-proof inverter body, the back of the three-proof inverter body being fixedly connected to two mounting plates by four cross bars, a copper plate being embedded in the middle of the back of the three-proof inverter body, a normally open temperature control switch and a plurality of fins being fixedly provided on the surface of the copper plate, an air inlet and an air outlet being respectively provided at the bottom end and the top of one side of the three-proof inverter body, a filter box and an exhaust duct being respectively fixedly provided at the bottom end of the air inlet and one side of the air outlet, an air filter cotton being snap-connected inside the filter box, a card cover being snap-connected at the bottom end of the filter box, a baffle cover being hinged at the air outlet end of the exhaust duct through a shaft rod, an exhaust fan being fixedly installed inside the exhaust duct, and the exhaust fan being electrically connected to a power supply through a normally open temperature control switch.

[0007] As a preferred technical solution of the utility model, one end of the four cross bars are respectively welded to the top and the bottom of the back side of the triple-proof inverter body, and the other ends of the four cross bars are respectively connected to two mounting plates, and two mounting holes are provided on the surfaces of the two mounting plates.

[0008] As a preferred technical solution of the utility model, the top of the filter box and the air inlet end of the exhaust duct are respectively fixedly connected with a mounting frame and a mounting ring, the top of the mounting frame and one side of the mounting ring are snap-connected with rubber strips, and the mounting frame and the mounting ring are respectively fixedly connected to the middle of the bottom end and the top of one side of the triple-proof inverter body by bolts.

[0009] As a preferred technical solution of the utility model, a support is fixedly provided on the top of the exhaust pipe, a connecting block is fixedly provided on the middle part of the top of the blocking cover, and the connecting block is rotatably connected to the support through a shaft.

[0010] As a preferred technical solution of the utility model, a rectangular groove is provided at the bottom end of the card cover, a protective net is fixedly provided on the surface of the rectangular groove, and push-pull plates are fixedly provided at the middle of both sides of the card cover.

[0011] As a preferred technical solution of the utility model, the rectangular groove and the air inlet are located in the same vertical plane, and the length of the rectangular groove and the length of the air inlet are both smaller than the length of the air filter cotton.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The three-proof fully enclosed inverter can absorb the heat inside the three-proof inverter body through the copper plate, and can exchange heat with the external air through the fins, which can reduce the temperature inside the three-proof inverter body. When the temperature of the copper plate is higher than the threshold of the normally open temperature control switch, the normally open temperature control switch can control the exhaust fan to work actively, and the exhaust fan can discharge the air inside the three-proof inverter body and open the cover. The inside of the three-proof inverter body can be in a negative pressure state, and the external air can enter the inside of the three-proof inverter body through the air filter cotton and the air inlet, which improves the heat dissipation effect. No manual operation is required, which avoids the phenomenon of heat accumulation inside the three-proof inverter body due to untimely operation.

[0014] 2. This triple-proof fully enclosed inverter can filter dust and water molecules in the airflow through the air filter cotton inside the filter box, which can prevent dust and water molecules from entering the triple-proof inverter body, ensuring the cleanliness of the air and improving the dust-proof effect. After the exhaust fan stops working, the cover can be reset and close the exhaust pipe by its own weight to prevent dust from falling into the exhaust pipe. By opening the card cover, the card cover can stop limiting the bottom end of the air filter cotton, making it easy to take out the air filter cotton, clean it and replace it. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a structural schematic diagram of the back side of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the air inlet of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the filter box of the utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the filter box of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the exhaust pipe of the utility model;

[0021] Figure 7 It is a schematic diagram of the internal structure of the exhaust pipe of the utility model.

[0022] In the figure: 1. Triple-proof inverter body; 2. Crossbar; 3. Mounting plate; 4. Mounting hole; 5. Copper plate; 6. Normally open temperature control switch; 7. Fins; 8. Air inlet; 9. Air outlet; 10. Filter box; 11. Exhaust duct; 12. Mounting frame; 13. Air filter cotton; 14. Card cover; 15. Protective net; 16. Push-pull plate; 17. Exhaust fan; 18. Connecting block; 19. Cover; 20. Support; 21. Shaft; 22. Mounting ring; 23. Rubber strip. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-7 A three-proof fully enclosed inverter comprises a three-proof inverter body 1, the back of the three-proof inverter body 1 is fixedly connected to two mounting plates 3 through four cross bars 2, a copper plate 5 is embedded in the middle of the back of the three-proof inverter body 1, a normally open temperature control switch 6 and a plurality of fins 7 are fixedly arranged on the surface of the copper plate 5, an air inlet 8 and an air outlet 9 are respectively opened at the bottom end and the top of one side of the three-proof inverter body 1, a filter box 10 and an exhaust pipe 11 are respectively fixedly arranged at the bottom end of the air inlet 8 and one side of the air outlet 9, an air filter cotton 13 is snap-fittedly connected to the inside of the filter box 10, a card cover 14 is snap-fittedly connected to the bottom end of the filter box 10, and the air outlet end of the exhaust pipe 11 is hinged with a shaft rod 21. The cover 19 and the exhaust duct 11 are fixedly installed with an exhaust fan 17, which is electrically connected to the power supply through the normally open temperature control switch 6. The heat inside the three-proof inverter body 1 can be absorbed through the copper plate 5, and heat can be exchanged with the external air through the fins 7, which can reduce the temperature inside the three-proof inverter body 1. When the temperature of the copper plate 5 is higher than the threshold of the normally open temperature control switch 6, the normally open temperature control switch 6 can control the exhaust fan 17 to work actively, and the exhaust fan 17 can exhaust the air inside the three-proof inverter body 1, making the inside of it in a negative pressure state, and the external air can enter the inside of the three-proof inverter body 1 through the air filter cotton 13 and the air inlet 8, thereby improving the heat dissipation effect;

[0025] See also Figure 2 One end of the four cross bars 2 is welded to the top and the bottom of the back of the three-proof inverter body 1 respectively, and the other ends of the four cross bars 2 are respectively connected to two mounting plates 3. Two mounting holes 4 are provided on the surfaces of the two mounting plates 3. The three-proof inverter body 1 can be fixed through the mounting plates 3 and the mounting holes 4. The cross bars 2 can ensure the distance between the three-proof inverter body 1 and the wall, thereby avoiding the three-proof inverter body 1 from being attached to the wall and affecting heat dissipation.

[0026] See also Figure 1 , Figure 2 and Figure 4The top of the filter box 10 and the air inlet end of the exhaust pipe 11 are respectively fixedly connected with a mounting frame 12 and a mounting ring 22. The top of the mounting frame 12 and one side of the mounting ring 22 are both snap-connected with a rubber strip 23. The mounting frame 12 and the mounting ring 22 are respectively fixedly connected to the middle part of the bottom end and the top of one side of the triple-proof inverter body 1 by bolts. The mounting frame 12 and the mounting ring 22 facilitate the installation and removal of the filter box 10 and the exhaust pipe 11. The rubber strip 23 can ensure the sealing of the mounting frame 12 and the mounting ring 22, and it is not easy to leak air.

[0027] See also Figure 6 A support 20 is fixedly provided on the top of the exhaust pipe 11, and a connecting block 18 is fixedly provided in the middle of the top of the blocking cover 19. The connecting block 18 is rotatably connected to the support 20 through a shaft rod 21. The shaft rod 21 can flexibly connect the blocking cover 19 to the exhaust pipe 11 through the support 20 and the connecting block 18.

[0028] See also Figure 5 A rectangular groove is provided at the bottom end of the card cover 14, a protective net 15 is fixedly provided on the surface of the rectangular groove, and push-pull plates 16 are fixedly provided in the middle of both sides of the card cover 14. The rectangular groove can ensure the circulation of air inside and outside the filter box 10, and the card cover 14 is pushed and pulled by the push-pull plates 16, which facilitates the installation and removal of the card cover 14.

[0029] See also Figure 3 and Figure 5 The rectangular groove and the air inlet 8 are located in the same vertical plane, and the length of the rectangular groove and the length of the air inlet 8 are both smaller than the length of the air filter cotton 13. By making the length of the rectangular groove and the length of the air inlet 8 smaller than the length of the air filter cotton 13, the air filter cotton 13 can be prevented from entering the rectangular groove and the air inlet 8, which is safe and reliable.

[0030] When in use, the staff first fixes the three-proof inverter body 1 through the mounting plate 3 and the mounting hole 4, and then puts the air filter cotton 13 into the filter box 10, and then engages the card cover 14 with the bottom end of the filter box 10. When the three-proof inverter body 1 is working, the copper plate 5 can absorb the heat inside the three-proof inverter body 1, and can exchange heat with the external air through the fins 7, so as to reduce the temperature inside the three-proof inverter body 1. When the working environment temperature is high and the heat dissipation effect of the copper plate 5 is reduced, the normally open temperature control switch 6 can monitor the temperature of the copper plate 5. When the temperature of the copper plate 5 is higher than the threshold value of the normally open temperature control switch 6, the contacts of the normally open temperature control switch 6 can be closed to control the exhaust fan 17 to work, and the exhaust fan 17 can discharge the air inside the three-proof inverter body 1, open the cover 19, and the three-proof inverter The interior of the main body 1 can be in a negative pressure state, and the external air can enter the interior of the three-proof inverter body 1 through the air filter cotton 13 and the air inlet 8. The air filter cotton 13 inside the filter box 10 can filter the dust and water molecules in the airflow, and can prevent dust and water molecules from entering the interior of the three-proof inverter body 1. While ensuring cleanliness, it can prevent the internal heat accumulation of the three-proof inverter body 1. When the temperature of the copper plate 5 is lower than the threshold value of the normally open temperature control switch 6, the contacts of the normally open temperature control switch 6 can be disconnected and the exhaust fan 17 can be controlled to enter a sleep state. At this time, the baffle 19 can be reset by its own weight and the exhaust pipe 11 can be closed. The staff pulls the push-pull plate 16 and opens the card cover 14. The card cover 14 can stop limiting the bottom end of the air filter cotton 13, and the air filter cotton 13 can be taken out, cleaned and replaced.

[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 three-proof fully enclosed inverter, comprising a three-proof inverter body (1), characterized in that: The back of the three-proof inverter body (1) is fixedly connected to two mounting plates (3) via four cross bars (2); a copper plate (5) is embedded in the middle of the back of the three-proof inverter body (1); a normally open temperature control switch (6) and a plurality of fins (7) are fixedly provided on the surface of the copper plate (5); an air inlet (8) and an air outlet (9) are respectively provided at the bottom and the top of one side of the three-proof inverter body (1); the bottom of the air inlet (8) and the air outlet (9) are A filter box (10) and an exhaust pipe (11) are fixedly provided on one side thereof, the interior of the filter box (10) is snap-connected with an air filter cotton (13), the bottom end of the filter box (10) is snap-connected with a card cover (14), the air outlet end of the exhaust pipe (11) is hinged with a blocking cover (19) via a shaft rod (21), an exhaust fan (17) is fixedly installed inside the exhaust pipe (11), and the exhaust fan (17) is electrically connected to a power supply via a normally open temperature control switch (6).

2. A three-proof fully enclosed inverter according to claim 1, characterized in that: One end of the four cross bars (2) is respectively welded to the top and the bottom of the back of the triple-proof inverter body (1), and the other end of the four cross bars (2) is respectively connected to two mounting plates (3), and two mounting holes (4) are provided on the surfaces of the two mounting plates (3).

3. The three-proof fully enclosed inverter according to claim 1 is characterized in that: The top of the filter box (10) and the air inlet end of the exhaust pipe (11) are respectively fixedly connected with a mounting frame (12) and a mounting ring (22); the top of the mounting frame (12) and one side of the mounting ring (22) are both snap-fitted with a rubber strip (23); the mounting frame (12) and the mounting ring (22) are respectively fixedly connected with the middle of the bottom end and the top of one side of the triple-proof inverter body (1) by bolts.

4. The three-proof fully enclosed inverter according to claim 1 is characterized in that: A support (20) is fixedly provided at the top of the exhaust pipe (11), a connecting block (18) is fixedly provided at the middle of the top of the blocking cover (19), and the connecting block (18) is rotatably connected to the support (20) via a shaft (21).

5. The three-proof fully enclosed inverter according to claim 1 is characterized in that: A rectangular groove is provided at the bottom end of the card cover (14), a protective net (15) is fixedly provided on the surface of the rectangular groove, and push-pull plates (16) are fixedly provided at the middle of both sides of the card cover (14).

6. A three-proof fully enclosed inverter according to claim 5, characterized in that: The rectangular groove and the air inlet (8) are located on the same vertical plane, and the length of the rectangular groove and the length of the air inlet (8) are both smaller than the length of the air filter cotton (13).

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