CN101749285A

CN101749285A - Fan with silencer

Info

Publication number: CN101749285A
Application number: CN201010039789A
Authority: CN
Inventors: 汪祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-15
Filing date: 2010-01-15
Publication date: 2010-06-23

Abstract

The invention relates to a fan, in particular to a fan with an embedded silencer for reducing the intensity of the noise transmitted by the fan outwards, and belongs to the field of ventilating devices. The fan with the silencer mainly comprises a shell, a motor, an impeller, a motor frame, and the silencer. The motor is connected with the impeller and is fixed in the shell through the motor frame. The silencer is arranged in the space formed by the shell and the motor and the impeller. The fan with the silencer is characterized in that: the silencer is annular, so that the motor and the impeller are enclosed in an internal space thereof; and the impeller sucks the air from the direction of a rotating shaft thereof and throws the air out of the periphery of the impeller.

Description

A kind of blower fan with silencer

Technical field

The present invention relates to a kind of blower fan, especially a kind of built-in blower fan of silencer utilizes silencer to reduce the noise of blower fan, belongs to the ventilation equipment field.

Background technique

In the building design of modern society, especially, generally all the subtense angle of ventilation system as building can be used for carrying out between the building inside and the external world air exchange to guarantee the pure and fresh of building inner air as the building of public arena.And generally all can be equipped with blower fan in the middle of the ventilation system, blower fan is used for ambient air sucked in the building or with the air in the building discharges.All blower fans all can produce noise in running.In the middle of the existing fan design, the shape of optimizing the parts such as impeller of blower fan by aerodynamic principle reduces noise, perhaps come noise reduction by the structure of optimizing blower fan inside, perhaps by the purpose that quieter material reaches noise reduction is set in housing, application number as China is 03125519.1, and name is called the patent of invention of " pipeline fan and noise reduction method thereof "; And for example Zhong Guo application number is 200520040858.7, and name is called the utility model patent of " a kind of noise cancelling type pipeline fan ".

Summary of the invention

The object of the present invention is to provide a kind of blower fan that uses the silencer of multi-layer compound structure, to reach better noise reduction.

In order to reach above-mentioned purpose of the present invention, the present invention is achieved through the following technical solutions: a kind of blower fan with silencer, mainly form by housing, motor, impeller, motor frame, silencer, motor is connected with impeller and is fixed in the housing by the motor frame, silencer is arranged in the space between housing and motor, the impeller, it is characterized in that: silencer is circular, and motor and impeller are wrapped in its inner space; Impeller sucks air and air is thrown away around impeller from its rotor shaft direction.

The blower fan of above-mentioned band silencer, silencer wherein are mechanical type baffler or electronic type baffler.

The blower fan of above-mentioned band silencer, wherein said mechanical type baffler adopts multilayer material.

The blower fan of above-mentioned band silencer, wherein said mechanical type baffler adopts composite structure.

The present invention uses the silencer of ring-type and in conjunction with the flow pattern of impeller in blower fan, on the basis of existing blower fan technology and in the prerequisite that does not increase structural complexity, be issued to good noise reduction, simple and the realization easily of blower fan structure, so the present invention has substantive distinguishing features and remarkable progress.

Description of drawings

Fig. 1 is the overall appearance perspective view of one embodiment of the present of invention;

Fig. 2 is an embodiment's shown in Figure 1 overall perspective analysis diagram;

Fig. 3 is an embodiment's shown in Figure 1 left view;

Fig. 4 is an embodiment's shown in Figure 1 rear view;

Fig. 5 is an embodiment's shown in Figure 1 front elevation;

Fig. 6 is that the A-A line in Fig. 4 cuts open the sectional view of getting;

Fig. 7 is that embodiment's shown in Figure 1 air-flow moves towards schematic representation, and Fig. 9 is that the arrow that increases expression air-flow F on the basis of Fig. 6 forms;

Wherein, in the accompanying drawing:

1,2-housing, 3-motor, 4-impeller, 5-motor frame, 6, the 7-silencer, F-air-flow.

Embodiment

Below in conjunction with accompanying drawing one embodiment of the present of invention are described.Fig. 1-7 is the same embodiment's of explanation a principle.

Shown in Fig. 1-6, present embodiment is mainly by

housing

1,2, motor 3, and impeller 4, motor frame 5,

silencer

6,7 and some complementary screws are formed; Wherein, housing is divided into 1 and 2 two-part, and silencer is divided into 6 and 7 two-part.

Impeller 4 is fixed on the motor 3, and motor 3 is fixed on the motor frame 5 by screw, and motor frame 5 is connected with housing by screw, and

silencer

6,7 is arranged in the space between housing and motor 3, the impeller 4.

Silencer

6,7 is circular, and motor 3 and impeller 4 are wrapped in its inner space.

As shown in Figure 7, impeller 4 sucks air from its rotor shaft direction and forms air-flow F, and air-flow F is thrown away around impeller 4, and the air-flow F that is thrown away by impeller 4 is guided by silencer and housing, discharges from the air outlet at last.

After air-flow F threw away from impeller 4, vibration that air-flow F produces and sound wave part were absorbed by silencer, thereby realized reducing the purpose of noise intensity.

Claims

1. blower fan with silencer, mainly form by housing (1,2), motor (3), impeller (4), motor frame (5), silencer (6,7), motor (3) is connected with impeller (4) and is fixed in housing (1 by motor frame (5), 2) in, silencer (6,7) is arranged at housing (1,2) and in the space between the motor (3), impeller (4), it is characterized in that: silencer (6,7) is circular, and motor (3) and impeller (4) are wrapped in its inner space; Impeller (4) sucks air and air is thrown away all around from impeller (4) from its rotor shaft direction.

2. blower fan according to claim 1, silencer wherein (6,7) are mechanical type baffler or electronic type baffler.

3. blower fan according to claim 2, wherein said mechanical type baffler adopts multilayer material.

4. blower fan according to claim 2, wherein said mechanical type baffler adopts composite structure.