CN214945187U

CN214945187U - Serial-type high-pressure centrifugal fan

Info

Publication number: CN214945187U
Application number: CN202121336968.3U
Authority: CN
Inventors: 徐孟磊
Original assignee: Ningbo Ningfeng Fluid Machinery Co ltd
Current assignee: Ningfeng Technology (Ningbo) Co.,Ltd.
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-11-30
Anticipated expiration: 2031-06-16

Abstract

The utility model relates to a centrifugal fan technical field discloses a serial-type high pressure centrifugal fan, its technical scheme main points are including the support body, set up the motor on the support body, first centrifugal fan and second centrifugal fan, first centrifugal fan includes first impeller, second centrifugal fan includes the second impeller, first impeller and the coaxial setting of second impeller, through setting up first centrifugal fan and second centrifugal fan, and be provided with the connecting pipe between first air outlet and second air intake, drive the operation of first impeller and second impeller through a motor, can be used for replacing the centrifugal fan of doublestage impeller, both can satisfy the performance parameter that centrifugal fan can reach, greatly reduced the processing degree of difficulty and manufacturing cost again.

Description

Serial-type high-pressure centrifugal fan

Technical Field

The utility model relates to a centrifugal fan technical field, more specifically the utility model relates to a serial-type high-pressure centrifugal fan that says so relates to.

Background

Centrifugal fans can be generally classified into centrifugal fans and centrifugal blowers. The centrifugal blower is generally composed of a casing, an impeller, a collector, a main shaft and the like, and the centrifugal blower is generally composed of a front casing, a rear casing, a plurality of impellers, a reflux device, a shaft sleeve, a main shaft, a sealing group and the like.

The centrifugal blower has more than two impellers and has higher wind pressure, and in order to realize higher wind pressure, the centrifugal blower is usually realized by selecting a centrifugal blower, but the centrifugal blower adopts a cast shell, so that the structure is complex, the precision requirement is high, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a serial-type high pressure centrifugal fan realizes higher wind pressure through centrifugal fan.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a serial-type high pressure centrifugal fan, includes the support body, set up motor, first centrifugal fan and second centrifugal fan on the support body, first centrifugal fan includes first impeller, second centrifugal fan includes the second impeller, first impeller with the coaxial setting of second impeller, and all with motor output shaft fixed connection, first centrifugal fan includes first air intake and first air outlet, second centrifugal fan includes second air intake and second air outlet, first air intake department fixedly connected with air inlet case, the air inlet case with first air intake intercommunication, first air outlet with be provided with the connecting pipe between the second air intake, the radial cross-section of connecting pipe is circular.

As a further improvement, the opening of the air inlet box is arranged up, and the second air outlet is arranged up.

As a further improvement of the present invention, the first air outlet is disposed obliquely upward.

As a further improvement of the present invention, the first air outlet and the fixed pipe of the equal fixedly connected with in the second air outlet, the fixed pipe so that the first air outlet with the shape of the second air outlet is changed into a circle by a square.

As a further improvement of the utility model, the air inlet of the air inlet box is circular.

As a further improvement of the utility model, the motor with be provided with primary shaft bearing between the first centrifugal fan, first centrifugal fan with be provided with secondary shaft bearing between the second centrifugal fan, primary shaft bearing with secondary shaft bearing all with the output shaft of motor rotates and connects.

As a further improvement of the present invention, the diameter of the first impeller and the second impeller is equal.

The utility model has the advantages that: the utility model discloses in through setting up first centrifugal fan and second centrifugal fan to be provided with the connecting pipe between first air outlet and second air intake, drive the operation of first impeller and second impeller through a motor, can be used for replacing the centrifugal blower of doublestage impeller, realized centrifugal blower's high wind pressure, both can satisfy the performance parameter that centrifugal blower can reach, again greatly reduced the processing degree of difficulty and manufacturing cost.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Reference numerals: 1. a frame body; 2. a motor; 3. a first centrifugal fan; 4. a second centrifugal fan; 5. an air inlet box; 6. a connecting pipe; 7. a fixed tube; 8. a first bearing housing; 9. and a second bearing seat.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1, a serial high-pressure centrifugal fan of this embodiment includes a frame body 1, a motor 2, a first centrifugal fan 3 and a second centrifugal fan 4 are disposed on the frame body 1, the first centrifugal fan 3 includes a first impeller, the second centrifugal fan 4 includes a second impeller, the first impeller and the second impeller are coaxially disposed and are both fixedly connected to an output shaft of the motor 2, the first impeller and the second impeller have the same diameter, so that the first centrifugal fan 3 and the second centrifugal fan 4 have the same power, airflow flows more smoothly in the first centrifugal fan 3 and the second centrifugal fan 4, the first centrifugal fan 3 includes a first air inlet and a first air outlet, the second centrifugal fan 4 includes a second air inlet and a second air outlet, the first air inlet is fixedly connected to an air inlet box 5, the opening of the air inlet box 5 is arranged upwards, the second air outlet is arranged upwards, the first air outlet is arranged upwards in an inclined mode, the connecting pipe 6 is convenient to arrange, the connecting pipe 6 can be conveniently and conveniently connected with the second air inlet, the connecting pipe 6 cannot interfere with the second air outlet after being arranged, the air inlet box 5 is communicated with the first air inlet, the connecting pipe 6 is arranged between the first air outlet and the second air inlet, the radial section of the connecting pipe 6 is circular, the first centrifugal fan 3 and the second centrifugal fan 4 are communicated through the connecting pipe 6, the motor 2 is started, the first impeller and the second impeller rotate, air flow sequentially passes through the air inlet box 5, the first centrifugal fan 3, the connecting pipe 6 and the second centrifugal fan 4, finally flows out from the second air outlet, and can be used for replacing a centrifugal fan of a double-stage impeller, not only can meet the performance parameters which can be achieved by the centrifugal blower, but also greatly reduces the processing difficulty and the manufacturing cost.

Referring to fig. 1, the first air outlet and the second air outlet are fixedly connected with a fixing tube 7, and the fixing tube 7 changes the shape of the first air outlet and the second air outlet from square to circular, and the circular shape increases the circulation area and the circulation volume.

Referring to fig. 1, the air inlet of the air inlet box 5 is circular, so that the air inlet amount is increased. The motor 2 with be provided with first bearing frame 8 between the first centrifugal fan 3, first centrifugal fan 3 with be provided with second bearing frame 9 between the second centrifugal fan 4, first bearing frame 8 with second bearing frame 9 all with the output shaft of motor 2 rotates and is connected, and first bearing frame 8 and second bearing frame 9 increase the stability of motor 2 output shaft.

The working principle is as follows: the motor 2 is started, so that the first impeller and the second impeller rotate, and the airflow sequentially passes through the air inlet box 5, the first centrifugal fan 3, the connecting pipe 6 and the second centrifugal fan 4 and finally flows out of the second air outlet.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a serial-type high pressure centrifugal fan, includes support body (1), its characterized in that: set up motor (2), first centrifugal fan (3) and second centrifugal fan (4) on support body (1), first centrifugal fan (3) are including first impeller, second centrifugal fan (4) are including the second impeller, first impeller with the coaxial setting of second impeller, and all with motor (2) output shaft fixed connection, first centrifugal fan (3) are including first air intake and first air outlet, second centrifugal fan (4) are including second air intake and second air outlet, first air intake department fixedly connected with air inlet case (5), air inlet case (5) with first air intake intercommunication, first air outlet with be provided with connecting pipe (6) between the second air intake, the radial cross-section of connecting pipe (6) is circular.

2. The tandem high-pressure centrifugal fan according to claim 1, wherein: the opening of air inlet case (5) sets up upwards, the second air outlet sets up upwards.

3. The tandem high-pressure centrifugal fan according to claim 2, wherein: the first air outlet is arranged in an inclined upward direction.

4. A serial high-pressure centrifugal fan according to claim 3, characterized in that: the first air outlet and the second air outlet are fixedly connected with a fixing pipe (7), and the fixing pipe (7) enables the shape of the first air outlet and the shape of the second air outlet to be changed from square to circular.

5. The tandem high-pressure centrifugal fan according to claim 4, wherein: and the air inlet of the air inlet box (5) is circular.

6. The tandem high-pressure centrifugal fan according to claim 4, wherein: the motor (2) and be provided with first bearing frame (8) between first centrifugal fan (3), first centrifugal fan (3) with be provided with second bearing frame (9) between second centrifugal fan (4), first bearing frame (8) with second bearing frame (9) all with the output shaft of motor (2) rotates and is connected.

7. The tandem high-pressure centrifugal fan according to claim 4, wherein: the first impeller and the second impeller are equal in diameter.