CN102261348A

CN102261348A - Centrifugal fan

Info

Publication number: CN102261348A
Application number: CN2011102220356A
Authority: CN
Inventors: 钱建刚
Original assignee: Zhangjiagang Shiyibai Electromechanical Equipment Co Ltd
Current assignee: Zhangjiagang Shiyibai Electromechanical Equipment Co Ltd
Priority date: 2011-08-04
Filing date: 2011-08-04
Publication date: 2011-11-30

Abstract

The invention relates to a centrifugal fan which comprises a motor and an impeller, wherein the impeller comprises a chassis, an air inlet ring which is coaxial with the chassis and multiple blades which are fixed between the chassis and the air inlet ring; the blades are distributed in an annular array by taking the circle center of the chassis as a round dot, and one end, close to the circle center, of each blade is a blade tip, one end, far from the circle center, of each blade is a blade root, and each blade is extended in an arc shape from the blade root to the blade tip, and the radian of each blade is increased progressively from the blade root to the blade tip. The centrifugal fan provided by the invention has the advantages that the centrifugal impeller is adopted, and each blade is extended in an arc shape from the blade root to the blade tip, thus the impact noise is reduced, the index of the pneumatic efficiency is effectively ensured, and the purposes of large air volume and high pressure are realized.

Description

A kind of centrifugal blower

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Technical field

The present invention relates to a kind of centrifugal blower.

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Background technique

At present the industry of domestic demands blower fan adopts axial-flow blower mostly, and there are following many shortcomings in axial-flow blower: complex structure, fault are more, maintenance difficult, efficient is not high, noise is big, static pressure is low, air quantity is little, less stable during parallel operation.

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Summary of the invention

The object of the invention provides a kind of stable and centrifugal blower that efficient is high.

In order to achieve the above object, the technical solution adopted in the present invention is: a kind of centrifugal blower, it comprises motor, impeller, described impeller comprise the chassis, with the air supplying ring of the coaxial setting in chassis and be fixed on the chassis and air supplying ring between the multi-disc blade; Described blade is that the round dot circular array distributes with the center of circle on chassis, and its nearer end is a blade tip from the center of circle, an end far away is a blade root from the center of circle, described blade root is extended to blade tip along arc and radian is increased progressively by blade root to blade tip.

For raising the efficiency, the rotating shaft of described impeller and motor is fixedly connected.

For saving the space, the described blade of multi-disc annular spread and chassis form a cavity, and described motor is arranged in the cavity.

Further, the air guide ring that described air supplying ring comprises the air supplying ring body, is provided with the perpendicular and rounding off of air supplying ring body, described air guide ring imports air-flow in the cavity of blade and chassis formation.

Optimize, described centrifugal blower also comprises and parallels with described air supplying ring body and be fixedly connected with described base plate with base plate, two ends that air guide ring is fixedly connected and middle part and the support that rotates and be connected with machine shaft.

Further, described support by the transverse part that is parallel to base plate with forms perpendicular to two vertical portions of base plate, described transverse part and described base plate are fixedly connected, rotating with described machine shaft in the middle part of the described vertical portion is connected.

Owing to adopt technique scheme, the present invention has the following advantages: impeller adopts receded disk impeller in the present invention, and impeller is curved extension from blade root to blade tip, has reduced impact noise, guarantee the index of pneumatic efficiency effectively, realized the purpose of big air quantity, high pressure.

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Description of drawings

Accompanying drawing 1 is the three-dimensional view of blade of the present invention;

Accompanying drawing 2 is the three-dimensional view of impeller of the present invention;

Accompanying drawing 3 is the three-dimensional view of centrifugal blower of the present invention;

The three-dimensional view that accompanying drawing 4 is connected with motor for impeller of the present invention;

Wherein: 1, base plate; 3, impeller; 4, motor; 5, support; 6, blade; 7, air supplying ring; 8, chassis; 51, transverse part; 52, vertical portion; 61, blade root; 62, blade tip; 71, air supplying ring body; 72, air guide ring.

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Embodiment

Below in conjunction with accompanying drawing, the preferred specific embodiment of the present invention is described.

As shown in Figure 3, this centrifugal blower, the impeller 3 that it comprises motor 4, is fixedly connected with the rotating shaft of motor 4, the base plate 1 and support 5 of fixed electrical machinery 4 and impeller 3.

As shown in Figure 2, described impeller 3 comprise chassis 8, with the air supplying ring 7 of chassis 8 coaxial settings and be fixed on chassis 8 and air supplying ring 7 between eight blades 6; Described blade 6 is that the round dot circular array distributes with the center of circle on chassis 8, eight cavitys of described blade 6 and chassis 8 formation that annular distributes, and as shown in Figure 4, described motor 4 is arranged in the cavity.

As shown in Figure 1, described blade its nearer end is a blade tip 62 from the center of circle, an end far away is a blade root 61 from the center of circle, described blade root 61 is extended to blade tip 62 along arc and radian is increased progressively by blade root 61 to blade tip 62.

Described air supplying ring 7 comprises air supplying ring body 71, and air guide ring 72 that rounding off be provided with perpendicular with air supplying ring body 71, and described air guide ring 72 imports air-flow in the cavity that blade 6 and chassis 8 form.

Base plate 1 parallel with described air supplying ring body 71 and be fixedly connected with air guide ring 72, support 5 two ends are fixedly connected with described base plate 1 and middle part and the support 5 that rotates and be connected with motor 4 rotating shafts.

Described support 5 by the transverse part 51 that is parallel to base plate 1 with forms perpendicular to two vertical portions 52 of base plate 1, described transverse part 52 and described base plate 1 are fixedly connected, 52 middle parts, described vertical portion rotate with described motor 4 rotating shafts and are connected.

The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention as blade number or the like.

Claims

1. centrifugal blower, it comprises motor (4), impeller (3), it is characterized in that: described impeller (3) comprise chassis (8), with the air supplying ring (7) of the coaxial setting in chassis (8) and be fixed on chassis (8) and air supplying ring (7) between multi-disc blade (6); Described blade (6) is that the round dot circular array distributes with the center of circle of chassis (8), and nearer end is blade tip (62) from the center of circle for it, an end far away is blade root (61) from the center of circle, and described blade root (61) is extended to blade tip (62) along arc and radian is increased progressively by blade root (61) to blade tip (62).

2. centrifugal blower according to claim 1 is characterized in that: described impeller (3) is fixedly connected with the rotating shaft of motor (4).

3. centrifugal blower according to claim 1 is characterized in that: the described blade (6) of multi-disc annular spread forms a cavity with chassis (8), and described motor (4) is arranged in the cavity.

4. centrifugal blower according to claim 1, it is characterized in that: the air guide ring (72) that described air supplying ring (7) comprises air supplying ring body (71), is provided with the perpendicular and rounding off of air supplying ring body (71), described air guide ring (72) imports air-flow in the cavity that blade (6) and chassis (8) form.

5. centrifugal blower according to claim 1 is characterized in that: described centrifugal blower also comprises and parallels with described air supplying ring body (71) and be fixedly connected with described base plate (1) with base plate (1), two ends that air guide ring (72) is fixedly connected and support (5) that middle part and motor (4) rotating shaft rotate and be connected.

6. centrifugal blower according to claim 5, it is characterized in that: described support (5) by the transverse part that is parallel to base plate (1) (51) with form perpendicular to two vertical portions (52) of base plate (1), described transverse part (51) is fixedly connected with described base plate (1), and described vertical portion (52) middle part rotates with described motor (4) rotating shaft and is connected.