CN2228996Y

CN2228996Y - Vane for low-noise centrifugal fan

Info

Publication number: CN2228996Y
Application number: CN 95219986
Authority: CN
Inventors: 冯大鹏
Original assignee: SECOND LIGHT INDUSTRY REFRIGERATOR Co GUANGDONG PROV
Current assignee: SECOND LIGHT INDUSTRY REFRIGERATOR Co GUANGDONG PROV
Priority date: 1995-08-22
Filing date: 1995-08-22
Publication date: 1996-06-12
Anticipated expiration: 2005-08-22

Abstract

The utility model relates to a vane for a low-noise centrifugal fan, which is integrally form with an impeller and vanes by injection molding. A silencing layer is coated at the point of the inner end surface of each of the vanes; therefore, the vane for low-noise centrifugal fan can be used for reducing the noise of the centrifugal fan of a window type air conditioner. The silencing layer is made of rubber, or polyfoam, or chemical fibre flock or soft PVC. The mode of coating is felectrostatic lock coating, or spray coating or adhesive connection. The utility model has the advantages of simple structure, simple technologies, obvious noise reduction, low cost and high applicability.

Description

A kind of low noise centrifugal cutter wind wheel

The utility model relates to the centrifugal cutter technical field, particularly a kind of low noise centrifugal cutter wind wheel that is used for air conditioner.

The centrifugal cutter that existing window air conditioner uses, the wind wheel that is made of impeller and blade is to adopt the ABS engineering plastics Integratively formed with injection moulding process.In order to guarantee that impeller has enough rigidity when the high speed rotating, the material of impeller adopts highstrenghtpiston or even metallic material, so impeller interior edge face hardness height.When high speed rotating, air-flow enters impeller along the impeller axial direction, and percussion impeller interior edge face produces very big aerodynamic force noise.

The purpose of this utility model is to provide a kind of structure and technology is simple, the low noise centrifugal cutter wind wheel of excellent noise reduction effect.

The utility model is achieved by the following technical solution: a kind of low noise centrifugal cutter wind wheel, form by impeller and blade, be evenly equipped with blade on circumference of impeller, impeller, blade employing engineering plastics or metallic material are Integratively formed, and the place is coated with the noise reduction layer at the impeller interior edge face.The material of described noise reduction layer is to adopt rubber or foamed plastics or chemical fibre suede or flexible PVC.The mode that covers the noise reduction layer on impeller interior edge face matrix is to adopt static flocking or spraying or bonding.

When impeller rotated, to suction, the 90 ° of angles of transferring then were along radially discharging impeller through collector shaft for air.When air-flow percussion impeller interior edge face was transferred, because its interior edge face is coated with the noise reduction layer, had weakened greatly to the effect of impact of air particle impeller the inner.Meanwhile, air collision impeller interior edge face the and therefore eddy current that forms also weakens is so can reduce the aerodynamic force noise effectively.

Advantage of the present utility model is structure and technology is simple, noise reduction is obvious, with low cost, adaptability is strong.

Fig. 1 is the utility model structural representation;

Fig. 2 is A-A sectional view of Fig. 1.

By following embodiment the utility model is further elaborated.

Embodiment 1:

With reference to Fig. 1, shown in Figure 2, the centrifugal cutter wind wheel 1 that window air conditioner is used is made up of impeller 2 and blade 3, is evenly equipped with some on impeller 2 circumference.Noise reduction layer 5 material adopt flexible PVC, by spraying method it are sprayed on the interior edge face place of impeller matrix 4.

Embodiment 2:

With reference to Fig. 1, shown in Figure 2, the body material of impeller 2 is engineering plastics or metalwork, covers a noise reduction layer 5 by adhering method in its end face inboard.The material of noise reduction layer adopts rubber sheet or plastic foam sheet material.

Embodiment 3:

With reference to Fig. 1, shown in Figure 2, impeller 2 body materials are engineering plastics or metallic material, adopt electrostatic flocking method that chemical fibre suede is planted thereon at the inboard matrix 4 of impeller 2 end faces, thereby cover last layer noise reduction layer 5.

Claims

1, a kind of low noise centrifugal cutter wind wheel is made up of impeller and blade, is evenly equipped with blade on circumference of impeller, and impeller, blade employing engineering plastics or metallic material are Integratively formed, it is characterized in that being coated with the noise reduction layer at impeller interior edge face place.

2, wind wheel according to claim 1, the material that it is characterized in that described noise reduction layer are rubber or foamed plastics or chemical fibre suede or flexible PVC.

3, wind wheel according to claim 1, the coverage mode that it is characterized in that noise reduction layer and impeller matrix are static flocking or spraying or bonding.