CN202194859U

CN202194859U - Centrifugal fan

Info

Publication number: CN202194859U
Application number: CN2011202811489U
Authority: CN
Inventors: 钱建刚
Original assignee: Zhangjiagang Shiyibai Electromechanical Equipment Co Ltd
Current assignee: Zhangjiagang smart Mechanical & Electrical Equipment Co., Ltd.
Priority date: 2011-08-04
Filing date: 2011-08-04
Publication date: 2012-04-18
Anticipated expiration: 2021-08-04

Abstract

The utility model relates to a centrifugal fan which comprises a motor and an impeller, wherein the impeller comprises a chassis, an air inlet ring and a plurality pieces of blades, the air inlet ring is coaxially arranged with the chassis, and the plurality pieces of blades are fixed between the chassis and the air inlet ring; and the paddles takes the circle center of the chassis as the round spot to be distributed in a ring shape, one end of each blade, which is close to the circle center, is a blade tip, and the other end of each blade, which is far from the circle center, is a blade root, the blade root extends to the blade tip along the arc shape, and the radian increases by degrees from the blade root to the blade tip. In the centrifugal fan, the impeller adopts a centrifugal impeller, and the impeller extends in the arc shape from the blade root to the blade tip, therefore, the impacting noise is reduced, the index of the aerodynamic efficiency is effectively guaranteed, and the purposes of large airflow and high pressure are realized.

Description

A kind of centrifugal blower

Technical field

the utility model relates to a kind of centrifugal blower.

Background technique

at present the industry of domestic demands blower fan are adopted axial-flow blower mostly, and axial-flow blower exist below many shortcomings: 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.

Summary of the invention

the utility model purpose provides a kind of stable and centrifugal blower that efficient is high.

in order to achieve the above object; The technological scheme that the utility model adopted 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 it is blade tip from the nearer end in the center of circle, is blade root from a center of circle end far away, and described blade root to blade tip extends and radian is increased progressively by blade root to blade tip along arc.

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.

are optimized, and 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 support that middle part and machine shaft rotate and be connected.

further; Described support by the transverse part that is parallel to base plate with form perpendicular to two vertical portions of base plate; Described transverse part and described base plate are fixedly connected, and described vertical portion middle part rotates with described machine shaft and is connected.

are owing to adopt technique scheme; The utlity model has following advantage: impeller adopts receded disk impeller in the utility model; Impeller is from the curved extension of blade root to blade tip; Reduce impact noise, guaranteed the index of pneumatic efficiency effectively, realized the purpose of big air quantity, high pressure.

Description of drawings

Accompanying drawing 1 is the three-dimensional view of the blade of the utility model;

Accompanying drawing 2 is the three-dimensional view of the impeller of the utility model;

Accompanying drawing 3 is the three-dimensional view of the centrifugal blower of the utility model;

Accompanying drawing 4 is the three-dimensional view that the utility model impeller is connected with motor;

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.

Embodiment

describe the preferred specific embodiment of the utility model below in conjunction with accompanying drawing.

are 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.

are 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.

are as shown in Figure 1, and it is a blade tip 62 from the nearer end in the center of circle for described blade, are blade root 61 from a center of circle end far away, 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.

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 motor 4 rotating shafts rotate and are connected support 5.

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

the foregoing description is only for explaining the technical conceive and the characteristics of the utility model; Its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this; Can not limit the protection domain of the utility model with this; All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the utility model like 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 it is blade tip (62) from the nearer end in the center of circle; From a center of circle end far away is blade root (61), 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.