CN207033844U

CN207033844U - Built-in guiding device centrifugal blower

Info

Publication number: CN207033844U
Application number: CN201720982212.3U
Authority: CN
Inventors: 时海平
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-01
Filing date: 2017-08-01
Publication date: 2018-02-23
Anticipated expiration: 2027-08-01

Abstract

The utility model discloses a kind of built-in guiding device centrifugal blower, it is made up of motor, impeller, guiding device, it is characterised in that：The guiding device includes housing and deflector；The deflector is that surface is smooth and thin plate in banding, and deflector initiating terminal (2a) be located at housing bottom air inlet, along outer casing inner wall by spiral way attachment band around, to opposite other end 2b positions with housing top end air outlet；Motor and impeller are placed in center.The direct direction for changing centrifugal blower air-flow is made air-flow and blown out with more meeting hydromechanical principle, reach the purpose of energy-conservation by the utility model by spiral shape guiding device；Add the housing bulk strength of deflector higher simultaneously, stability enhancing, shock momentum reduces so as to reduce noise when housing is run.

Description

Built-in guiding device centrifugal blower

Technical field：

A kind of blower fan is the utility model is related to, particularly a kind of built-in guiding device centrifugal blower.

Background technology：

Blower fan is a kind of widely used plant equipment, and the aeroperformance of blower fan directly affects the operating efficiency of blower fan, Blower fan structure in real application systems is usually not reasonable due to design, produces eddy current loss and influences the work effect of blower fan The stability of rate and blower fan, the energy expenditure in running is caused, be unfavorable for cost-effective.

Utility model content：

For these above-mentioned shortcomings, the utility model purpose is to provide a kind of centrifugal blower of built-in guiding device, this Utility model centrifugation centrifugal blower is that suction is outwards thrown away through circumference of impeller in the middle part of wheel nose by air-flow, and air-flow is in housing Dynamic pressure is converted into static pressure under constraint, then the mode that axial dynamic pressure reaches air-supply purpose, its performance characteristics are converted to by static pressure It is the product that can require to be designed to various different flow pressure ratios, meets the needs of long distance delivery and technique supply and exhaust, change Centrifugal blower traditional air-out direction and mounting means are become.Its weak point：Energy loss caused by the conversion of air-flow twice, The high dynamic pressure air-flow of impeller tangential direction produces turbulent flow with Blower Housing collision, and produces noise.The utility model passes through shell Body and the spiral shape guiding device of inner walls connection, directly change centrifugal blower by air-flow to meet hydromechanical principle The direction of air-flow, reach the purpose of energy-saving and noise-reducing.

The technical scheme in the invention for solving the above technical problem is：

Built-in guiding device centrifugal blower, is made up of motor, impeller, guiding device, it is characterised in that：The guiding device Including housing and deflector；The deflector is that surface is smooth and thin plate in banding, and deflector initiating terminal (2a) is located at housing At bottom air inlet mouth, along outer casing inner wall by spiral way attachment band around to opposite other end 2b positions and housing top end air outlet； Motor and impeller are placed in center.

Further, the deflector is described from initiating terminal (2a) along inner walls spiral surrounding to opposite other end (2b) Spiral surrounding direction is consistent with the direction that centrifugal blower fan blade wheel rotates.

Further, the baffle quantity is 2-7 pieces.

Further, the deflector width is vertically and inner walls.

Further, the anglec of rotation of the every deflector along inner walls spiral surrounding is less than 180 degree.

Further, the other end 2b that deflector both ends width is equal or initiating terminal 2a is slightly narrow and relative.

Further, the material of the deflector is metal, rigid plastics and inorganic non-metallic material any of which.

Further, the inner walls are that diameter equal straight drum-shaped or air opening end diameter in both ends is slightly larger than air inlet One end diameter.

Further, housing and deflector can be that independent part is linked together by welding or being bonded, and can also lead to Cross casting, forging, compacting, machining, the overall structure that any one in above manufacture craft is made.

The utility model is built-in guiding device centrifugal blower, and its advantage is：

First, the spiral shape guiding device that the utility model is connected by housing and inner walls, will directly change from The direction of heart fan airflow makes air-flow and blown out with more conforming to hydromechanical principle, so as to reach the purpose of energy-conservation.

Second, deflector that the utility model is adhered to by inner walls spiral while play a part of stiffener plate, with When conventional fan outer casing thickness is equal, the shock momentum of the utility model blower fan operationally shell is smaller, reaches the purpose of noise reduction.

Brief description of the drawings：

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 blower fan entirety explosive views；

Fig. 2 front view profiles；

Fig. 3 guiding device left view profiles；

In figure：1- housings；2- deflectors；2a- deflector initiating terminals；2b- deflectors end end；3- impellers；4- motors.

Embodiment：

Built-in guiding device centrifugal blower, it is made up of motor 4, impeller 3, guiding device, the guiding device includes housing 1 With deflector 2；The deflector 2 be surface it is smooth and in banding thin plate, to reduce resistance when air passes through deflector 2, The initiating terminal 2a of deflector 2 is located at the bottom air inlet mouth of housing 1, along the inwall of shell 1 by attachment band in a spiral manner around relatively another Hold at 2b positions and housing top end air outlet, it is consistent with the direction of rotation of impeller 3 around direction, 2a ends it is equal with 2b ends width or 2a ends are slightly narrow with 2b ends, and the width of deflector 2 vertically can be with monoblock cast, flow deflector 2 with housing 1, whole guiding device Can be single part, with welding, the mode such as bonding links with housing 1, and deflector 2 and the junction of housing 1 can not have gap, The material of the guiding device can be metal, rigid plastics or inorganic non-metallic material one kind therein.

Housing 1 is slightly less than air outlet diameter for the equal tubular of both ends diameter, or air inlet diameter, to reduce impeller rotation The blast for turning to be formed is easy to wind to be blown out along air outlet the pressure of inner walls；Motor 4 is placed in guiding device center of gravity with impeller 3, The center line of the rotary shaft of motor 4 overlaps with the center line of housing.The utility model blower fan rationally can effectively improve tradition from The air-out mode of core type blower fan, the energy expenditure of the gas of the flowing of reduction on blower fan inwall, so as to improve operating efficiency.Together When built-in deflector 2 add the stability of housing 3, the shock momentum of housing 3 reduces in fan operation, so as to play noise reduction Effect.

Above example can not summarize whole of the present utility model, all on the idea basis of present design, this area The like product that technical staff can make by simple inference conversion or by the replacement of simple structure part, all should cover In the protection domain of this patent.

Claims

1. guiding device centrifugal blower built in, it is made up of motor, impeller, guiding device, it is characterised in that：The guiding device bag Include housing and deflector；The deflector is that surface is smooth and thin plate in banding, and deflector initiating terminal (2a) is located at housing bottom Portion's air inlet, along outer casing inner wall by spiral way attachment band around to opposite other end (2b) position and housing top end air outlet； Motor and impeller are placed in center.

2. built-in guiding device centrifugal blower according to claim 1, it is characterised in that：The deflector is from initiating terminal The side that (2a) rotates along inner walls spiral surrounding to opposite other end (2b), the spiral surrounding direction with centrifugal blower fan blade wheel To consistent.

3. built-in guiding device centrifugal blower according to claim 1, it is characterised in that：The baffle quantity is 2-7 Piece.

4. built-in guiding device centrifugal blower according to claim 1, it is characterised in that：The deflector width hangs down Directly and inner walls.

5. built-in guiding device centrifugal blower according to claim 1, it is characterised in that：The deflector both ends width phase Deng or initiating terminal 2a it is slightly narrow with relative other end 2b.

6. the built-in guiding device centrifugal blower according to claim 1-5 any one, it is characterised in that：The deflector Material be metal, rigid plastics and inorganic non-metallic material any of which.

7. built-in guiding device centrifugal blower according to claim 1, it is characterised in that：The inner walls are that both ends are straight Equal straight tubular or the air opening end diameter in footpath is slightly larger than air inlet one end diameter.

8. the built-in guiding device centrifugal blower according to claim 1 or 7, it is characterised in that：Housing and deflector can be with It is that independent part is linked together by welding or being bonded, can also be by casting, forging, suppressing, being machined, above system Make the overall structure that any one in technique is made.