CN215213999U

CN215213999U - High-efficient low-noise centrifugal fan and breathing machine

Info

Publication number: CN215213999U
Application number: CN202121208593.2U
Authority: CN
Inventors: 周培良; 汪平; 赵进
Original assignee: Ningbo Anchor Driving Technology Co ltd
Current assignee: Ningbo Anchor Driving Technology Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-12-17
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses a centrifugal fan and breathing machine of high-efficient low noise, wherein centrifugal fan includes the fan housing, impeller and motor, the main part of fan housing adopts spiral case structure, be provided with the air outlet of loudspeaker form on the fan housing, be provided with in the cavity of air outlet and separate the tongue, it is located the blade export top of impeller to separate the tongue, the impeller mounting is in the fan housing and is located the below of air outlet, the top of fan housing is provided with the air intake with the corresponding position of impeller, the top of impeller is provided with the radome fairing of round platform type, the radome fairing is with the structure looks adaptation of air intake and the dead in line, the impeller is connected in the axis of rotation of motor. The utility model provides a present centrifugal fan have the problem that high noise and operating efficiency are low, effectively improve its life.

Description

High-efficient low-noise centrifugal fan and breathing machine

Technical Field

The utility model relates to a centrifugal fan field especially relates to a centrifugal fan and breathing machine of high-efficient low noise.

Background

The existing centrifugal fan mostly adopts a structure that an impeller and an air outlet are on the same plane or the air outlet is arranged below the impeller.

However, the prior art has the following problems: when the impeller and the air outlet are on the same plane, although the efficiency is higher, the fluid noise is very high because the baffle tongue is also on the same plane; when the air outlet is arranged below the impeller, although the noise is reduced, the volute can only be made into a round shape due to the structural influence, and the efficiency is greatly reduced. Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a centrifugal fan and a respirator with high efficiency and low noise.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal fan and breathing machine of high-efficient low noise solves present centrifugal fan and has high noise, inefficient problem.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model relates to a high-efficient low-noise centrifugal fan and breathing machine, wherein centrifugal fan includes fan housing, impeller and motor, the main part of fan housing adopts spiral case structure, be provided with the air outlet of loudspeaker form on the fan housing, be provided with in the cavity of air outlet and separate the tongue, it is located to separate the tongue the blade export top of impeller, the impeller mounting be in the fan housing and be located the below of air outlet, the top of fan housing with the corresponding position of impeller is provided with the air intake, the top of impeller is provided with the radome fairing of round platform type, the radome fairing with the structure looks adaptation of air intake and axis coincidence, the impeller is connected in the axis of rotation of motor.

Further, the impeller is an open impeller.

Further, a controller is installed on the motor.

Furthermore, the controller is located in a preformed groove of the buckling end face of the motor, and the motor is electrically connected with the controller.

Further, the motor is a direct current brushless motor or a permanent magnet synchronous motor.

Furthermore, a heat dissipation shell is arranged on the outer side of the motor, and heat dissipation fins are arranged on the outer surface of the heat dissipation shell.

Further, the fan housing adopts the plastics material, the heat dissipation shell adopts the metal material, the fan housing through the cladding of moulding plastics the top of heat dissipation shell.

Furthermore, the fan housing and the heat dissipation shell are made of metal materials, and the fan housing and the heat dissipation shell are integrally formed through injection molding.

The ventilator is provided with the high-efficiency low-noise centrifugal fan in the ventilation device of the ventilator.

Compared with the prior art, the utility model discloses a beneficial technological effect:

the fan cover of the utility model adopts a spiral case structure, and the spiral line structure of the spiral case can greatly improve the performance of the fan and the efficiency;

the utility model places the central axis of the air outlet above the impeller, and the baffle tongue above the impeller, thereby greatly reducing the noise of the fluid part of the fan, reducing the radial force brought to the motor shaft by the non-uniform fluid of centrifugal classification, and prolonging the service life of the motor bearing;

the utility model provides a present centrifugal fan have the problem that high noise and operating efficiency are low, effectively improve its life.

Drawings

The present invention will be further explained with reference to the following description of the drawings.

Fig. 1 is a schematic structural view of the high-efficiency low-noise centrifugal fan of the present invention;

FIG. 2 is an assembly view of the high-efficiency and low-noise centrifugal fan of the present invention;

FIG. 3 is a cross-sectional view of the fan housing;

FIG. 4 is a schematic structural view of an impeller;

description of reference numerals: 1. a fan housing; 101. an air outlet; 102. an air inlet; 103. a tongue is separated; 2. an impeller; 201. a cowling; 202. a vane outlet; 3. a motor; 301. a heat dissipation housing; 4. and a controller.

Detailed Description

As shown in fig. 1-4, a high-efficiency low-noise centrifugal fan includes a fan housing 1, an impeller 2 and a motor 3, a main body of the fan housing 1 adopts a volute structure, a trumpet-shaped air outlet 101 is provided on the fan housing 1, a baffle tongue 103 is provided in a cavity of the air outlet 101, the baffle tongue 103 is located above a blade outlet 202 of the impeller 2, the impeller 2 is installed in the fan housing 1 and located below the air outlet 101, an air inlet 102 is provided at a position corresponding to the impeller 2 at the top of the fan housing 1, a frustum-shaped fairing 201 is provided at the top of the impeller 2, the fairing 201 is matched with the air inlet 102 in structure and has an axis coinciding with each other, the impeller 2 is connected to a rotating shaft of the motor 3, the motor 3 is provided with a controller 4, the controller 4 is located in a reserved groove at a fastening end face of the motor 3, and the motor 3 is electrically connected to the controller 4.

The working state of this embodiment, referring to fig. 2 and 3, the arrows in the figure indicate the gas flow direction and the broken lines indicate the path. The air pumped by the impeller 2 enters through the air inlet 102 of the fan cover 1, and a higher air pressure is obtained at the outlet after the air is pressurized by the spiral line structure, meanwhile, the spiral line structure is more in line with the air motion rule, the friction loss is reduced, and the fan efficiency is effectively improved; the wind pumped out from the blade outlet 202 of the impeller 2 can not directly impact on the baffle tongue 103 of the fan cover 1, and the main noise of the fan is caused by the gas noise, so that the fluid noise of the fan is reduced, and the noise of the whole fan is greatly improved.

In the present embodiment, the impeller 2 is an open impeller 2, and the material of the impeller 2 includes, but is not limited to, PA66, PPS, and other plastics, and 6061 and other metals. The controller 4 can be arranged at the non-shaft extension end of the motor 3 or on the side face according to the situation, and the fan and the controller 4 are integrated together, so that the integrated level is higher, and the use by customers is more convenient and simpler.

Specifically, the motor 3 is a direct current brushless motor or a permanent magnet synchronous motor; a heat dissipation shell 301 is arranged outside the motor 3, and heat dissipation fins are arranged on the outer surface of the heat dissipation shell 301.

The heat dissipation shell 301 of the embodiment can effectively prolong the service life of the motor 3.

Specifically, as a possible implementation manner, the fan cover 1 is made of a plastic material, the heat dissipation shell 301 is made of a metal material, and the fan cover 1 is coated on the top end of the heat dissipation shell 301 through injection molding; as another possible implementation manner, the fan housing 1 and the heat dissipation shell 301 are made of metal, and the fan housing 1 and the heat dissipation shell 301 are integrally formed by injection molding.

In this embodiment, the material of the fan housing 1 includes, but is not limited to, plastics such as PC and PPS, metal alloys such as ADC12 and ZAMAK3, the fan housing 1 and the heat dissipation shell 301 of the motor 3 are directly processed together, and then the motor 3 is directly installed in the heat dissipation shell 301, or the fan housing 1 and the heat dissipation shell 301 of the motor 3 are connected together through glue, so that the structural components of the fan are simpler and more durable in service life.

According to the centrifugal fan of the high-efficient low noise that provides, the utility model discloses still provide a breathing machine, will centrifugal fan is applied to in the breathing machine, when not connecing the humidifier, this breathing machine can improve the comfort level of using.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a centrifugal fan of high-efficient low noise which characterized in that: including fan housing (1), impeller (2) and motor (3), the main part of fan housing (1) adopts the spiral case structure, be provided with horn-shaped air outlet (101) on fan housing (1), be provided with in the cavity of air outlet (101) and separate tongue (103), it is located to separate tongue (103) blade export (202) top of impeller (2), install impeller (2) be located in fan housing (1) and be located the below of air outlet (101), the top of fan housing (1) with the corresponding position of impeller (2) is provided with air intake (102), the top of impeller (2) is provided with fairing (201) of round platform type, fairing (201) with the structure looks adaptation and the axis coincidence of air intake (102), impeller (2) are connected in the axis of rotation of motor (3).

2. The high efficiency, low noise centrifugal fan of claim 1, wherein: the impeller (2) adopts an open impeller.

3. The high efficiency, low noise centrifugal fan of claim 1, wherein: and a controller (4) is arranged on the motor (3).

4. The high efficiency, low noise centrifugal fan of claim 3, wherein: the controller (4) is positioned in a reserved groove of the buckling end face of the motor (3), and the motor (3) is electrically connected with the controller (4).

5. The high efficiency, low noise centrifugal fan of claim 3, wherein: the motor (3) adopts a direct current brushless motor or a permanent magnet synchronous motor.

6. The high efficiency, low noise centrifugal fan of claim 3, wherein: the motor is characterized in that a heat dissipation shell (301) is arranged on the outer side of the motor (3), and heat dissipation fins are arranged on the outer surface of the heat dissipation shell (301).

7. The high efficiency, low noise centrifugal fan of claim 6, wherein: the fan housing (1) is made of plastic, the heat dissipation shell (301) is made of metal, and the fan housing (1) is coated on the top end of the heat dissipation shell (301) through injection molding.

8. The high efficiency, low noise centrifugal fan of claim 6, wherein: the fan housing (1) and the heat dissipation shell (301) are made of metal materials, and the fan housing (1) and the heat dissipation shell (301) are integrally formed through injection molding.

9. A ventilator, characterized by: a ventilator provided with a high-efficiency low-noise centrifugal fan according to any one of claims 1 to 8.