CN210167974U

CN210167974U - Sealing device of inverter

Info

Publication number: CN210167974U
Application number: CN201921417441.6U
Authority: CN
Inventors: 张靖漓
Original assignee: Nanjing Fenglue Electromechanical Technology Co Ltd
Current assignee: Nanjing Fenglue Electromechanical Technology Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-03-20
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a sealing device of dc-to-ac converter, including radiator, main tank and seal ring, the below of radiator is provided with the scavenger fan, the below of fin is provided with the screw thread post, seal ring is located the below of screw thread post, the right side of through-hole is provided with the blind hole, the right side of internal thread cover is provided with the screw, the main tank is located the below of radiator, the rear end of locating pin is provided with the weld part, the below of nut is provided with the terminal, the front end of bolt is provided with the expansion gasket, the below of apron is provided with the terminal box, the below of manger plate circle is provided with the bellows joint. Compared with the existing common sealing device, the sealing device of the inverter has the function of cooling the interior of the inverter, reduces the consumption degree of internal parts, prolongs the service life of the inverter, has the function of sealing and protecting the junction and ensures that the inverter is safer to use.

Description

Sealing device of inverter

Technical Field

The utility model relates to an inverter technical field specifically is a sealing device of dc-to-ac converter.

Background

The inverter is a converter which converts direct current electric energy on a battery or an accumulator jar into constant-frequency constant-voltage or frequency-modulation voltage-regulation alternating current, so the inverter is widely applied to the solar power generation industry, but the solar power generation needs to be carried out outdoors, the outdoor environment is severe, the inverter is easy to damage, and a device which can seal and protect the inverter is needed.

The existing sealing device is single in structure, the inverter is only directly wrapped inside the sealing device, the temperature inside the inverter cannot be dissipated, the service life of the inverter is allowed to slide down linearly, the function of a wiring part is not protected, the inverter is easily damaged due to accidental short circuit, the use requirements of people cannot be well met, and technical innovation is performed on the basis of the existing sealing device according to the condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealing device of dc-to-ac converter to propose general sealing device single structure in solving above-mentioned background, only directly wrap up the dc-to-ac converter inside sealing device, this can let the inside temperature of dc-to-ac converter can't be scattered, let the life straight line gliding of dc-to-ac converter, and do not have the function of protection wiring department, let the dc-to-ac converter can damage because of unexpected short circuit very easily, the user demand problem of satisfying people that can not be fine.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing device of an inverter comprises a radiator, a main box and a sealing washer, wherein a ventilating fan is arranged below the radiator, radiating fins are arranged below the ventilating fan, a threaded column is arranged below the radiating fins, the sealing washer is positioned below the threaded column, a through hole is formed below the sealing washer, a blind hole is formed in the right side of the through hole, an internal thread sleeve is arranged below the blind hole, a screw is arranged on the right side of the internal thread sleeve, a circuit substrate is arranged below the screw, the main box is positioned below the radiator, a positioning pin is arranged below the main box, a welding part is arranged at the rear end of the positioning pin, a nut is arranged at the rear end of the welding part, a terminal is arranged below the nut, a bolt is arranged at the front end of the terminal, an expansion washer is arranged at the front end of the bolt, and a cover plate is arranged at the front end of the expansion washer, the junction box is arranged below the cover plate, the water retaining ring is arranged below the junction box, and the corrugated pipe joint is arranged below the water retaining ring.

Preferably, the central axis of the ventilator coincides with the central axis of the radiating fins, and the through holes are embedded in the radiating fins.

Preferably, the outer surface structure of the threaded columns is matched with the inner surface structure of the internal threaded sleeve, and the threaded columns are symmetrically distributed around the central line of the main box.

Preferably, the lower surface of the radiator is tightly attached to the upper surface of the main box, and the positioning pin penetrates through the inner portion of the front end face of the main box.

Preferably, the nuts and the main case form an integrated structure through the welding part, and the nuts are distributed in a rectangular shape with respect to a central axis of the terminal.

Preferably, the front end surface of the expansion washer is attached to the rear end surface of the cover plate, and the central axis of the cover plate is parallel to the central axis of the bellows joint.

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

1. the utility model discloses a setting of scavenger fan, fin and circuit substrate, make this sealing device have cooling structure, when the dc-to-ac converter is worked, the circuit can produce a large amount of heats, if these heats can't be dispelled, just can cause the harm to the internals of dc-to-ac converter, cause the life of dc-to-ac converter to reduce greatly, so through the screw fixed position between fin and the circuit substrate, let the heat between fin and the circuit substrate can transmit, make things convenient for the fin to derive the heat, make the temperature of circuit substrate keep, keep normal temperature, can not only prolong the life of dc-to-ac converter, can also maintain the work efficiency of dc-to-ac converter;

2. the utility model discloses a setting of screw thread post, seal ring and internal thread cover, make and have good sealing performance between this sealing device and the cooling device, the cooperation of screw thread post and internal thread cover, let the surface between radiator and the main tank closely laminate together, the entering of foreign matter has effectively been prevented, let the heat dissipation of radiator can stable work, the screw also plays same function simultaneously, but because the screw passes circuit substrate and connects, can't increase too big pulling force, so can only continue supplementary cooperation, through seal ring will pass through the through-hole and the gap of blind hole is given the plug, let inside can't contact with the external world, thereby make inside become an independent space, the effectual sealed effect that has played, prevent the invasion of external foreign matter;

3. the utility model has the advantages that the sealing device has the function of preventing short circuit of wiring by arranging the positioning pin, the cover plate and the water retaining ring, the common sealing device does not protect the external terminal of the inverter, thereby leading water drops to splash on the terminal, causing the short circuit of the inverter, causing the damage of internal parts, the terminal box protects the terminal, the positioning pin can quickly determine the position of a threaded hole, the bolt can quickly align to the nut, the overlong time is not consumed, simultaneously, the bolt is convenient to loosen, the front end of the main box is protruded to protect the connection part between the main box and the terminal box and is not corroded by running water, the expansion gasket can supplement the gap between the cover plates, the water flow is blocked outside the expansion gasket, the water flow can not enter the inside of the terminal box, the terminal is protruded from the main box, the installation of a wiring operator is convenient, the stable structure between the main box and the terminal box is also stabilized, therefore, the terminal can be well protected, and accidents are reduced.

Drawings

FIG. 1 is a schematic structural view of a front view portion of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is a schematic view of the structure of the right-side view part of the junction box of the present invention.

In the figure: 1. a heat sink; 2. a main box; 3. a junction box; 4. a ventilator; 5. a heat sink; 6. positioning pins; 7. a corrugated pipe joint; 8. a threaded post; 9. a sealing gasket; 10. a through hole; 11. blind holes; 12. an internal thread sleeve; 13. a circuit substrate; 14. a screw; 15. a cover plate; 16. an expansion washer; 17. a bolt; 18. welding the part; 19. a water retaining ring; 20. a terminal; 21. and (4) a nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a sealing device of an inverter comprises a radiator 1, a main box 2 and a sealing gasket 9, wherein a ventilating fan 4 is arranged below the radiator 1, a radiating fin 5 is arranged below the ventilating fan 4, a threaded column 8 is arranged below the radiating fin 5, the sealing gasket 9 is positioned below the threaded column 8, a through hole 10 is arranged below the sealing gasket 9, a blind hole 11 is arranged on the right side of the through hole 10, an internal thread sleeve 12 is arranged below the blind hole 11, the central axis of the ventilating fan 4 is overlapped with the central axis of the radiating fin 5, the through hole 10 is embedded in the radiating fin 5, the outer surface structure of the threaded column 8 is matched with the inner surface structure of the internal thread sleeve 12, the threaded columns 8 are symmetrically distributed around the central line of the main box 2, the sealing device is provided with a cooling structure through the arrangement of the ventilating fan 4, the radiating fin 5 and a circuit substrate 13, when the inverter works, the circuit can produce a large amount of heat, if the heat can not be dissipated, the internal parts of the inverter can be damaged, so that the service life of the inverter is greatly shortened, the heat sink 5 and the circuit substrate 13 are fixed by the screws 14, the heat between the heat sink 5 and the circuit substrate 13 can be transferred, the heat sink 5 can conveniently conduct the heat out, the temperature of the circuit substrate 13 is kept, the normal temperature is kept, the service life of the inverter can be prolonged, and the working efficiency of the inverter can be maintained;

the right side of the internal thread sleeve 12 is provided with a screw 14, a circuit substrate 13 is arranged below the screw 14, the main box 2 is positioned below the radiator 1, a positioning pin 6 is arranged below the main box 2, the rear end of the positioning pin 6 is provided with a welding part 18, the rear end of the welding part 18 is provided with a nut 21, the lower surface of the radiator 1 is tightly attached to the upper surface of the main box 2, the positioning pin 6 penetrates through the inside of the front end face of the main box 2, the sealing device and the cooling device have good sealing performance through the arrangement of the threaded column 8, the sealing washer 9 and the internal thread sleeve 12, the matching of the threaded column 8 and the internal thread sleeve 12 enables the surfaces between the radiator 1 and the main box 2 to be tightly attached together, the entering of foreign matters is effectively prevented, the heat dissipation of the radiator 1 can stably work, meanwhile, the screw 14 also has the same function, but the screw 14 penetrates through the circuit substrate 13 for connection, excessive tension cannot be increased, so that only auxiliary matching can be continued, and the gap between the through hole 10 and the blind hole 11 which penetrate through the blind hole is blocked by the sealing washer 9, so that the inside cannot be contacted with the outside, the inside becomes an independent space, the sealing effect is effectively realized, and the invasion of external foreign matters is prevented;

the sealing device has the function of preventing short circuit of wiring by arranging the positioning pin 6, the cover plate 15 and the water retaining ring 19, wherein the sealing device has no protection for the external terminal 20 of the inverter, so that when water drops splash on the terminal 20, will let the dc-to-ac converter short circuit, let the internals damage, and terminal box 3 just protects terminal 20, it gets up to wrap up, the position of the definite screw hole that locating pin 6 can be quick, let bolt 17 can aim at nut 21 fast, need not consume the overlength time, also make things convenient for the elasticity of bolt 17 simultaneously, the outstanding junction of main box 2 front end is between for protection main box 2 and terminal box 3, do not corroded by flowing water, expansion washer 16 can supply the gap between apron 15, let rivers blockked outside expansion washer 16, can't get into inside terminal box 3, terminal 20 is protruding from main box 2, not only make things convenient for the installation of operator, the stable structure between main box 2 and the terminal box 3 has also been stabilized, can let terminal 20 obtain good protection like this, reduce unexpected emergence.

The working principle is as follows: when the sealing device of the inverter is used, firstly, the ventilation fan 4 is taken down from the radiator 1, then the through hole 10 is embedded into the radiating fin 5, the through hole 10 penetrates through the radiating fin 5, then the sealing gaskets 9 are clamped at two ends of the through hole 10, then the threaded column 8 is embedded into the main box 2, then the blind hole 11 is punched, then the threaded column 8 is matched with the internal threaded sleeve 12, then the locking is carried out, the surface between the radiator 1 and the main box 2 is tightly attached, then the screw 14 penetrates through the circuit substrate 13, then the screw 14 is locked in the radiator 1, the position of the circuit substrate 13 is fixed, then the concave-convex part of the junction box 3 is matched with the concave-convex part of the main box 2, then the positioning pin 6 is punched at the matching position, the main box 2 is connected with the junction box 3, then the bolt 17 is matched with the nut 21 by using the energy-saving wrench, then the main box 2 is tightly attached with the, then an expansion gasket 16 is placed in a groove of the cover plate 15, then the cover plate 15 is matched with the junction box 3, then the cover plate 15 is fixed by using a bolt 17, then the expansion gasket 16 is filled in the inner gap by pressure, and the terminal 20 is effectively protected, wherein the model of the junction box 3 is DS-AG-0811, and the model of the circuit substrate 13 is WYX-137, which is the working principle of the sealing device of the inverter.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A sealing device of an inverter comprises a radiator (1), a main box (2) and a sealing gasket (9), and is characterized in that: the air exchange fan is characterized in that the air exchange fan (4) is arranged below the radiator (1), the radiating fins (5) are arranged below the air exchange fan (4), the threaded columns (8) are arranged below the radiating fins (5), the sealing washers (9) are positioned below the threaded columns (8), the through holes (10) are arranged below the sealing washers (9), the blind holes (11) are formed in the right sides of the through holes (10), the internal thread sleeves (12) are arranged below the blind holes (11), the screws (14) are arranged on the right sides of the internal thread sleeves (12), the circuit substrate (13) is arranged below the screws (14), the main box (2) is positioned below the radiator (1), the positioning pins (6) are arranged below the main box (2), the welding portions (18) are arranged at the rear ends of the positioning pins (6), and the nuts (21) are arranged at the rear ends of the welding portions (18), the terminal is arranged below the nut (21), the bolt (17) is arranged at the front end of the terminal (20), the expansion gasket (16) is arranged at the front end of the bolt (17), the cover plate (15) is arranged at the front end of the expansion gasket (16), the junction box (3) is arranged below the cover plate (15), the water retaining ring (19) is arranged below the junction box (3), and the corrugated pipe joint (7) is arranged below the water retaining ring (19).

2. The sealing device for an inverter according to claim 1, wherein: the central axis of the ventilator (4) coincides with the central axis of the radiating fins (5), and the through holes (10) are embedded in the radiating fins (5).

3. The sealing device for an inverter according to claim 1, wherein: the outer surface structure of the threaded columns (8) is matched with the inner surface structure of the internal thread sleeve (12), and the threaded columns (8) are symmetrically distributed around the central line of the main box (2).

4. The sealing device for an inverter according to claim 1, wherein: the lower surface of the radiator (1) is tightly attached to the upper surface of the main box (2), and the positioning pin (6) penetrates through the inner portion of the front end face of the main box (2).

5. The sealing device for an inverter according to claim 1, wherein: the nut (21) and the main box (2) form an integrated structure through the welding portion (18), and the nut (21) is distributed in a rectangular mode relative to the central axis of the terminal (20).

6. The sealing device for an inverter according to claim 1, wherein: the front end surface of the expansion gasket (16) is attached to the rear end surface of the cover plate (15), and the central axis of the cover plate (15) is parallel to the central axis of the corrugated pipe joint (7).