CN212838592U

CN212838592U - Detachable centrifugal fan

Info

Publication number: CN212838592U
Application number: CN202021509182.2U
Authority: CN
Inventors: 郑福桥
Original assignee: Shaoxing Shangyu Shangan Fan Co ltd
Current assignee: Shaoxing Shangyu Shangan Fan Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-03-30
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a fan especially relates to a detachable centrifugal fan. The detachable centrifugal fan comprises a casing, an impeller and a motor, wherein the impeller and the motor are installed in the casing, the motor drives the impeller to rotate, the casing comprises two end plates and a surrounding plate, mounting grooves are formed in edges of two sides of the surrounding plate in the length direction, the two end plates are inserted into the mounting grooves of the two sides respectively, a sealing pressure belt and a sealing arc belt are arranged in the outer surface and the mounting grooves of the end plates, the two ends of the surrounding plate in the length direction and the two end plates form an air outlet, a volute tongue is arranged on the surrounding plate at the air outlet and comprises a volute tongue piece and an ear plate, the first end of the volute tongue piece is connected with the surrounding plate, the ear plate is arranged at the second end of the volute tongue. Can make the casing install fast and dismantle through dismantling between end plate and the bounding wall is connected, the convenient maintenance to the fan. The sealing arc belt and the sealing press belt can improve the sealing performance of the joint.

Description

Detachable centrifugal fan

Technical Field

The utility model belongs to the technical field of the fan, especially, relate to a detachable centrifugal fan.

Background

The centrifugal ventilator mainly comprises an impeller, a casing, a motor, a coupling and a shaft, wherein the impeller is a main work-doing component for generating wind pressure and transmitting energy, the casing is mainly used for introducing gas and discharging gas and simultaneously converting partial kinetic energy of the gas into pressure energy, the coupling is used for connecting the motor and the fan and transmitting torque, and the shaft is used for installing and fixing the impeller.

Chinese patent publication No. CN103321919A discloses a heat dissipation centrifugal fan, which comprises a casing, an impeller, an air inlet, a front cover plate, a rear cover plate, a heat dissipation wheel, and a motor, wherein the rear cover plate is connected with a rear side plate of the fan casing, a backing plate is welded on the rear cover plate, the backing plate is connected with an end plate of the motor, the heat dissipation wheel is arranged between the backing plate and the end plate of the motor, and the heat dissipation wheel is mounted on a hub of the impeller. The heat dissipation wheel is additionally arranged on the fan, so that the service life of the fan is effectively prolonged, and the fan has the advantages of low manufacturing cost, good safety performance, convenience in disassembly, assembly and maintenance and the like.

The heat dissipation wheel has been add to the heat dissipation formula centrifugal fan who discloses in the above-mentioned patent, has prolonged the life of fan, nevertheless makes the structure of fan more complicated, has also increased the probability that the fan broke down, nevertheless because the casing can't be dismantled fast, and it is more troublesome to maintain when breaking down, influences normal use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists to the aforesaid, provide a centrifugal fan that the casing can be dismantled fast.

The purpose of the utility model is realized like this: the utility model provides a detachable centrifugal fan, includes the casing, install impeller, drive impeller pivoted motor in the casing, and the casing includes two end plates and bounding wall, all is equipped with the mounting groove on bounding wall length direction's the both sides edge, and two end plates insert respectively in the mounting groove of both sides, be equipped with in the surface of end plate and the mounting groove and seal the area and seal the arc area, seal the area and press a butt mounting groove inner wall another side butt seal arc area, seal the arc area one side butt end plate surface another side butt seal area, the both ends of bounding wall length direction enclose the air outlet with two end plates, be equipped with the snail tongue on the bounding wall of air outlet department, the snail tongue includes snail tongue spare and otic placode, the first end connection bounding wall of snail tongue spare, the second tip of snail tongue spare is arranged in to the otic placode, and the position is adjustable.

Through taking above-mentioned technical scheme, bounding wall and end plate are the sheet metal component, and the bounding wall is crooked into the volute form of traditional casing, and the end plate be with bounding wall bending shape assorted plate body, and two end plates are installed respectively in the both sides of bounding wall and are made two end plates and bounding wall constitute the casing wholly. One of the two end plates is provided with an air inlet, and the other end plate is provided with a connecting port for connecting the output shaft of the motor and the impeller. The mounting groove is formed by outwards bending and inwards bending the side edge of the enclosing plate in the length direction, and the two end plates are inserted into the mounting groove and connected with the enclosing plate. Because the structure of pegging graft leads to the leakproofness of casing not enough, insert between the surface of mounting groove inner wall and end plate that the sealing pressure area can effectively improve the sealing performance of end plate and bounding wall junction with sealed arc area, can avoid the hourglass wind of junction, guarantee centrifugal fan's performance. The screw rod runs through the mounting groove, the sealing pressure belt, the sealing arc belt and the end plate and the nut are matched to enable the enclosing plate, the end plate and the sealing pressure belt to be fixed with the sealing arc belt, the structural strength of connection of the enclosing plate and the end plate is guaranteed, and meanwhile the screw rod is convenient to detach. The volute tongue comprises a first end part and a second end part. The first end and the second end are detachably connected with the surrounding plate, so that the volute tongue can be conveniently detached, meanwhile, the ear plate on the second end is connected with the mounting groove, the position of the volute tongue can be adjusted under practical conditions, and the noise reduction performance of the volute tongue is guaranteed.

The utility model discloses further set up to: the lug plate is provided with a first fixing hole, the mounting grooves on two sides are provided with fixing blocks corresponding to the position of the volute tongue, the fixing blocks are provided with second fixing holes coaxial with the first fixing holes, the first fixing holes and the second fixing holes are both long round holes, and the first fixing holes and the second fixing holes are connected with nuts through screws in a matched mode.

By adopting the technical scheme, the convex fixing blocks extend from the edges of the two side mounting grooves corresponding to the positions of the volute tongues, the lug plates are provided with the first fixing holes in the shape of the long circles, the fixing blocks are provided with the second fixing holes in the shape of the long circles matched with the first fixing holes, and the first fixing holes and the second fixing holes are connected and fixed through the screws and the nuts. The shape of the oblong hole enables the position between the ear plate and the mounting groove to be adjusted, so that the position between the surrounding plate and the second end of the volute tongue piece is adjusted.

The utility model discloses further set up to: the first end portion is Z-shaped, a first connecting hole is formed in the Z-shaped first end portion, a cushion block is arranged on the enclosing plate, a second connecting hole matched with the first connecting hole is formed in the cushion block, and the first connecting hole is connected with the second connecting hole through screws.

By adopting the technical scheme, the first end part of the Z-shaped first end part enables the first end part of the volute tongue piece to be installed outside the enclosing plate, so that the connecting structure of the first end part and the enclosing plate cannot penetrate into the volute, the inner surface of the volute is kept smooth as far as possible, and the influence on the flow field inside the volute is avoided.

The utility model discloses further set up to: the sealing pressing belt is provided with a convex strip matched with the groove.

Through adopting above-mentioned technical scheme, can prevent the skew of position between sealed arc area and the sealed pressure area, further strengthen the sealing performance between bounding wall and the end plate, prevent that the junction from producing the phenomenon of leaking out.

The utility model discloses further set up to: the edge of the end plate is provided with a card, and the mounting groove is internally provided with a card hole matched with the card.

Through taking above-mentioned technical scheme, the card hole on the mounting groove corresponds with the card on the end plate, inserts through card and card hole location when the mounting groove when the end plate, can be convenient for the quick installation of end plate on convex bounding wall side.

The utility model has the advantages that:

1. the casing is divided into two end plates and a coaming, the casing can be rapidly installed and detached through detachable connection between the end plates and the coaming, and the maintenance of the fan is facilitated.

2. The sealing arc belt and the sealing pressing belt are arranged at the connecting position between the end plate and the enclosing plate, so that the sealing performance of the connecting position can be effectively improved, and the problem of insufficient sealing performance caused by a detachable structure is compensated.

3. The worm tongue which is detachably connected and adjustable in position is arranged, so that the position of the worm tongue can be adjusted according to actual conditions while the worm tongue is convenient to detach and install.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of an end plate inserted into a coaming;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the structure of the volute tongue;

wherein the reference numerals are: 1. enclosing plates; 11. mounting grooves; 12. cushion blocks; 121. a second connection hole; 13. a fixed block; 131. a second fixing hole; 14. a clamping hole; 2. an end plate; 21. a card; 22. an air inlet; 23. a connecting port; 3. sealing the press belt; 31. a convex strip; 4. sealing the arc belt; 41. a groove; 5. a tongue member; 51. a first end portion; 511. a first connection hole; 52. a second end portion; 53. an ear plate; 531. a first fixing hole.

Detailed Description

In order to make the technical solutions in the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings:

as shown in fig. 1, 2 and 4, a detachable centrifugal fan comprises a casing, an impeller installed in the casing, and a motor driving the impeller to rotate, wherein the casing comprises two end plates 2 and a shroud plate 1, both edges of both sides of the shroud plate 1 in the length direction are provided with mounting grooves 11, the two end plates 2 are respectively inserted into the mounting grooves 11 of both sides, sealing press belts 3 and sealing arc belts 4 are arranged in the outer surfaces of the end plates 2 and the mounting grooves 11, one surface of the sealing press belt 3 is abutted against the inner wall of the mounting groove 11 and the other surface is abutted against the sealing arc belts 4, one surface of the sealing arc belts 4 is abutted against the outer surface of the end plates 2 and the other surface is abutted against the sealing press belts 3, both ends of the shroud plate 1 in the length direction and the two end plates 2 form an air outlet, a volute tongue is arranged on the shroud plate 1 at the air outlet, the volute tongue comprises a volute tongue piece 5 and an ear plate 53, a, the ear plate 53 is connected with the mounting groove 11 and is adjustable in position. The coaming 1 and the end plate 2 are sheet metal parts, the coaming 1 is bent into a volute shape of a traditional casing, the end plate 2 is a plate body matched with the bending shape of the coaming 1, and the two end plates 2 are respectively arranged on two sides of the coaming 1 so that the two end plates 2 and the coaming 1 form the whole casing. One of the two end plates 2 is provided with an air inlet 22, and the other end plate 2 is provided with a connecting port 23 for connecting the output shaft of the motor and the impeller. The mounting groove 11 is formed by bending the side edge of the enclosing plate 1 in the length direction outwards and inwards, and the two end plates 2 are inserted into the mounting groove 11 and connected with the enclosing plate 1. Because the structure of pegging graft leads to the leakproofness of casing not enough, inserts between the surface of 11 inner walls of mounting groove and end plate 2 that sealed press 3 and sealed arc area 4 can effectively improve the sealing performance of end plate 2 and bounding wall 1 junction, can avoid the hourglass wind of junction, guarantees centrifugal fan's performance. The screw rod runs through mounting groove 11, the sealed area of pressing 3, sealed arc area 4 and end plate 2 and nut cooperation and makes bounding wall 1, end plate 2, sealed area of pressing 3 and sealed arc area 4 fixed, guarantees the structural strength that bounding wall 1 and end plate 2 are connected, also convenient to detach simultaneously. The volute tongue includes a first end 51 and a second end 52. First end 51 and second end 52 all can dismantle with bounding wall 1 and be connected, can be convenient for the dismantlement of snail tongue, and the otic placode 53 on the second end 52 is connected and the position is adjustable with mounting groove 11 simultaneously, can have more practical situation and adjust the position of snail tongue to guarantee the noise reduction performance of snail tongue.

As shown in fig. 1 and 4, the ear plate 53 is provided with a first fixing hole 531, the mounting grooves 11 on both sides are provided with fixing blocks 13 corresponding to the position of the volute tongue, the fixing blocks 13 are provided with second fixing holes 131 coaxial with the first fixing hole 531, the first fixing hole 531 and the second fixing holes 131 are both oblong holes, and the first fixing hole 531 and the second fixing holes 131 are connected with nuts through screws in a matching manner. The edge of the mounting groove 11 on two sides corresponding to the position of the volute tongue extends to form a protruding fixing block 13, the lug plate 53 is provided with a first fixing hole 531 in a long circle shape, the fixing block 13 is provided with a second fixing hole 131 in a long circle shape matched with the first fixing hole 531, and the first fixing hole 531 and the second fixing hole 131 are connected and fixed through a screw and a nut. The shape of the oblong hole enables the position between the ear plate 53 and the mounting groove 11 to be adjusted, thereby adjusting the position between the enclosing plate 1 and the second end 52 of the volute tongue 5.

As shown in fig. 1 and 4, the first end 51 is in a "Z" shape, a first connection hole 511 is provided on the first end 51 of the "Z" shape, a spacer 12 is provided on the shroud plate 1, a second connection hole 121 adapted to the first connection hole 511 is provided on the spacer 12, and the first connection hole 511 and the second connection hole 121 are connected by a screw. The first end part 51 of the Z-shaped structure enables the first end part 51 of the volute tongue piece 5 to be installed outside the enclosing plate 1, so that the connecting structure of the first end part 51 and the enclosing plate 1 cannot penetrate into the volute, the inner surface of the volute is kept smooth as far as possible, and the influence on the flow field inside the volute is avoided.

As shown in fig. 3, a groove 41 is formed on one surface of the sealing arc belt 4, which is in contact with the sealing press belt 3, and a convex strip 31 adapted to the groove 41 is formed on the sealing press belt 3. The air leakage prevention device can prevent the position deviation between the sealing arc belt 4 and the sealing press belt 3, further strengthen the sealing performance between the enclosing plate 1 and the end plate 2 and prevent the air leakage phenomenon at the joint.

As shown in fig. 1, a card 21 is provided on the edge of the end plate 2, and a card hole 14 for engaging with the card 21 is provided in the mounting groove 11. The card hole 14 on the mounting groove 11 corresponds with the card 21 on the end plate 2, and when the end plate 2 is inserted into the mounting groove 11, the card 21 and the card hole 14 are positioned, so that the quick mounting of the end plate 2 can be facilitated on the side edge of the circular arc-shaped enclosing plate 1.

The above embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained based on the above embodiments by those skilled in the art without any creative work shall fall within the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A detachable centrifugal fan comprises a casing, an impeller and a motor, wherein the impeller and the motor are arranged in the casing, the motor drives the impeller to rotate, the casing comprises two end plates (2) and a surrounding plate (1), both edges of the two sides of the surrounding plate (1) in the length direction are provided with mounting grooves (11), the two end plates (2) are respectively inserted into the mounting grooves (11) of the two sides, the outer surface of the end plate (2) and the mounting grooves (11) are internally provided with sealing pressure belts (3) and sealing arc belts (4), one surface of each sealing pressure belt (3) is abutted to the inner wall of the mounting groove (11), the other surface of each sealing arc belt (4) is abutted to the other surface of the corresponding end plate (2), the two ends of the surrounding plate (1) in the length direction are surrounded by the two end plates (2) to form an air outlet, a volute tongue is arranged on the surrounding plate (, the volute tongue comprises a volute tongue piece (5) and an ear plate (53), a first end portion (51) of the volute tongue piece (5) is connected with the surrounding plate (1), the ear plate (53) is arranged at a second end portion (52) of the volute tongue piece (5), and the ear plate (53) is connected with the outer surface of the mounting groove (11) and is adjustable in position.

2. The detachable centrifugal fan according to claim 1, wherein the ear plate (53) is provided with a first fixing hole (531), the two side mounting grooves (11) are provided with fixing blocks (13) corresponding to the position of the volute tongue, the fixing blocks (13) are provided with a second fixing hole (131) coaxial with the first fixing hole (531), the first fixing hole (531) and the second fixing hole (131) are both oblong holes, and the first fixing hole (531) and the second fixing hole (131) are connected with a nut through a screw in a matching manner.

3. The detachable centrifugal fan according to claim 1, wherein the first end portion (51) is in a shape of "Z", a first connection hole (511) is formed in the first end portion (51) of the "Z", a cushion block (12) is arranged on the enclosure plate (1), a second connection hole (121) adapted to the first connection hole (511) is formed in the cushion block (12), and the first connection hole (511) and the second connection hole (121) are connected by a screw.

4. The detachable centrifugal fan according to claim 1, wherein a groove (41) is formed on one surface of the sealing arc belt (4) abutted to the sealing pressure belt (3), and a convex strip (31) matched with the groove (41) is formed on the sealing pressure belt (3).

5. The detachable centrifugal fan according to claim 1, wherein a locking piece (21) is provided on the edge of the end plate (2), and a locking hole (14) engaged with the locking piece (21) is provided in the mounting groove (11).