CN109059070B

CN109059070B - A fan wheel for range hood

Info

Publication number: CN109059070B
Application number: CN201811074657.7A
Authority: CN
Inventors: 徐剑光; 邱文权; 任方力
Original assignee: Zhejiang Oulin Life Health Technology Co Ltd
Current assignee: Zhejiang Oulin Life Health Technology Co Ltd
Priority date: 2018-09-14
Filing date: 2018-09-14
Publication date: 2024-12-24
Anticipated expiration: 2038-09-14
Also published as: CN109059070A

Abstract

The application provides a wind wheel for a range hood, which relates to the technical field of range hoods and comprises a hub and a blade ring formed by a plurality of blades; the blades are uniformly distributed along the circumferential direction of the hub, and the blades are gradually bent outwards from two ends to the middle. As the middle of the blades of the wind wheel is outwards bent, the wind wheel is beneficial to guiding air flow, reducing the air flow impacting the shell of the fan, and further reducing the vibration noise generated by the shell in the running process of the fan.

Description

Wind wheel for range hood

Technical Field

The application relates to the technical field of range hoods, in particular to a wind wheel for a range hood.

Background

The kitchen appliance is installed above kitchen range, and can suck away waste burnt by range and fume harmful to human body produced in cooking process, and discharge it out of room, so that it can reduce pollution, purify air and can prevent toxicity and explosion.

The current range hood can generate larger vibration noise when in operation, and generally, the larger the air quantity of the range hood is, the larger the noise is.

Disclosure of Invention

The application aims to solve the technical problem that a wind wheel for a range hood is provided for overcoming the defects in the prior art so as to reduce noise of the range hood during operation.

The wind wheel for the range hood comprises a hub and a blade ring formed by a plurality of blades, wherein the blades are uniformly distributed along the circumferential direction of the hub, and the blades are gradually bent outwards from two ends to the middle.

Optionally, the distance from the center of the blade to the axis of the hub is 1 cm longer than the distance from the two ends of the blade to the axis of the hub.

Optionally, the wind wheel is driven by a motor;

The hub comprises an outer ring, an inner ring and connecting ribs for connecting the outer ring and the inner ring, the blades are fixed on the outer ring, and the inner ring is detachably and fixedly connected with the motor.

Optionally, the inner ring is provided with a central hole, one side of the central hole is provided with a clamping groove, the output shaft of the motor is provided with a limiting pin, the limiting pin penetrates through the output shaft of the motor along the diameter direction and is fixed on the output shaft, and the tail end of the output shaft is provided with a thread section and is provided with a nut;

The output shaft of the motor passes through the central opening of the inner ring of the hub to enable the limiting pin to be clamped in the clamping groove, and the nut is screwed into the tail end of the output shaft to enable the inner ring of the hub to be clamped on the output shaft of the motor.

Optionally, the intermediate portion of the blade is fixed to the outer ring of the hub.

Optionally, the wind wheel is provided with two end circular rings, and the two end circular rings are respectively fixed at two sides of the blade ring.

Optionally, an installation seat is fixed on the motor, the installation seat is provided with a plurality of installation holes, and rubber rings are arranged on the installation holes.

Alternatively, the blades are disposed obliquely in the circumferential direction.

The application provides a wind wheel for a range hood, which comprises a hub and a blade ring formed by a plurality of blades, wherein the blades are uniformly distributed along the circumferential direction of the hub, and the blades are gradually bent outwards from two ends to the middle. As the middle of the blades of the wind wheel is outwards bent, the wind wheel is beneficial to guiding air flow, reducing the air flow impacting the shell of the fan, and further reducing the vibration noise generated by the shell in the running process of the fan.

Further, the motor is provided with a rubber ring during installation, so that vibration caused by the motor can be reduced.

Drawings

Fig. 1 is a schematic structural view illustrating a wind wheel for a range hood according to an exemplary embodiment.

Fig. 2 is a schematic view showing a structure of a wind wheel for a range hood in another direction according to an exemplary embodiment.

Fig. 3 is a schematic view showing an exploded structure of a wind wheel for a range hood according to an exemplary embodiment.

Fig. 4 is a schematic view showing an exploded structure of a wind wheel for a range hood in another direction according to an exemplary embodiment.

Detailed Description

The following are specific embodiments of the present application and the technical solutions of the present application will be further described with reference to the accompanying drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the application. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

The embodiment of the application shows a wind wheel for a range hood, which has low vibration noise during operation.

The wind wheel for the range hood comprises a hub and a blade ring formed by a plurality of blades, wherein the blades are uniformly distributed along the circumferential direction of the hub, and the blades are gradually bent outwards from two ends to the middle. As the middle of the blades of the wind wheel is outwards bent, the wind wheel is beneficial to guiding air flow, reducing the air flow impacting the shell of the fan, and further reducing the vibration noise generated by the shell in the running process of the fan.

In addition, the motor is provided with a rubber ring during installation, so that vibration brought by the motor can be reduced.

The wind wheel for a range hood according to the embodiment of the present application will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, the wind wheel for the range hood comprises a hub 1 and a blade ring 2 formed by a plurality of blades 21, wherein the blades 21 are uniformly distributed along the circumferential direction of the hub 1, and the blades 21 are gradually outwards bent from two ends to the middle.

Specifically, the blades 21 are gradually bent outwards from two ends to the middle, so that when the wind wheel rotates, air flows from two sides of the wind wheel are concentrated to the middle part, air flows leaked from two sides of the wind wheel are reduced, excessive impact caused by the air flows leaked from two sides of the wind wheel to the shell is avoided, and vibration of the shell is reduced. In addition, by directing the air flow toward the middle portion, turbulence is reduced, as well as wind noise caused by turbulence.

In the embodiment of the application, the distance from the middle of the blade 21 to the axis of the hub 1 is 1 cm longer than the distance from the two ends of the blade 21 to the axis of the hub 1. It has been found in practice that bending the blades 21 outwards by 1 cm is a preferred option.

Referring to fig. 2, in the embodiment of the application, the rotor is driven by an electric motor 3.

Referring to fig. 1, the hub 1 comprises an outer ring 11, an inner ring 12 and connecting ribs 13 connecting the outer ring 11 and the inner ring 12, wherein the blades 21 are fixed on the outer ring 11, and the inner ring 12 is detachably and fixedly connected with the motor 3. The motor 3 is detachably connected with the inner ring 12, which is beneficial to maintenance and cleaning of the wind wheel and increases the universality of each component of the wind wheel.

Referring to fig. 3 and 4, in the embodiment of the present application, the inner ring 12 has a central opening 121, one side of the central opening 121 has a clamping groove 122, the output shaft 31 of the motor 3 is provided with a limiting pin 32, the limiting pin 32 passes through the output shaft 31 of the motor 3 in the diameter direction and is fixed on the output shaft 31, the end of the output shaft 31 has a threaded section 311 and is provided with a nut 4;

The output shaft 31 of the motor 3 passes through the central hole 121 of the inner ring 12 of the hub 1, so that the limiting pin 32 is clamped in the clamping groove 122, and the nut 4 is screwed into the tail end of the output shaft 31, so that the inner ring 12 of the hub 1 is clamped on the output shaft 31 of the motor 3.

The limiting pin 32 is clamped in the clamping groove 122, so that the relative rotation between the inner ring 12 of the hub 1 and the output shaft 31 of the motor 3 is limited. The nut 4 is screwed into the end of the output shaft 31, fixing the axial position of the inner ring 12 of the hub 1 on the output shaft 31.

In general, the connection between the output shaft 31 of the motor 3 and the inner ring 12 of the hub 1 is simple in structure, and the hub 1 can be disassembled only by unscrewing the nut 4, so that the disassembly is very convenient.

It should be noted that the rotation speed of the wind wheel is relatively low, and the simple connection structure can realize stable connection.

In the embodiment of the application, the intermediate portion of the blades 21 is fixed to the outer ring 11 of the hub 1. This reduces the length of the free end of the blade 21, which in turn reduces the elastic deformation of the blade 21 when subjected to the reaction force of the air flow, which in turn reduces the vibration intensity of the blade 21 when in operation.

In the embodiment of the application, the wind wheel is provided with two end circular rings 5, and the two end circular rings 5 are respectively fixed on two sides of the blade ring 2.

The end ring 5 advantageously increases the overall stability of the individual blades 21 during operation and reduces the vibration intensity of the blades 21 during operation.

Referring to fig. 3 and 4, in the embodiment of the present application, a mounting seat 33 is fixed on the motor 3, and the mounting seat 33 has a plurality of mounting holes, and the mounting holes are provided with rubber rings 331.

The motor 3 needs to be fixed on the shell of the fan, and the rubber ring 331 can absorb the vibration from the motor 3, prevent the vibration from being transmitted to the shell of the fan, and reduce the vibration of the shell.

In the embodiment of the present application, the blades 21 are disposed obliquely in the circumferential direction.

The blades 21 are inclined, so that the mounting direction of the blades 21 is kept as uniform as possible with the flow direction of the air flow, and the excessive air flow is reduced to impinge on the blades 21, thereby reducing the vibration of the blades 21.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the application. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the application or exceeding the scope of the application as defined in the accompanying claims.

Claims

1. A fan wheel for a range hood, characterized in that the fan wheel for the range hood comprises: a hub, a blade ring consisting of a plurality of blades; the blades are evenly distributed along the circumference of the hub; the blades are gradually bent outward from both ends to the middle to form an arc-shaped air guide portion; the distance between the middle of the blade and the axis of the hub is 1 cm longer than the distance between the two ends of the blade and the axis of the hub; the blades are inclined along the circumferential direction.

2. The wind wheel for a range hood according to claim 1 is characterized in that the wind wheel is driven by a motor; the hub comprises an outer ring, an inner ring, and connecting ribs connecting the outer ring and the inner ring; the blades are fixed on the outer ring; and the inner ring is detachably fixedly connected to the motor.

3. The fan wheel for a range hood according to claim 2, characterized in that the inner ring has a central opening; one side of the central opening has a slot; the output shaft of the motor is provided with a stop pin; the stop pin passes through the output shaft of the motor along the diameter direction and is fixed on the output shaft; the end of the output shaft has a threaded section and is equipped with a nut;

The output shaft of the motor passes through the central opening of the inner ring of the wheel hub, so that the limit pin is clamped in the clamping groove; the nut is screwed into the end of the output shaft, so that the inner ring of the wheel hub is clamped on the output shaft of the motor.

4. The fan wheel for a range hood according to claim 2, characterized in that the middle portion of the blade is fixed on the outer ring of the hub.

5. The wind wheel for a range hood according to claim 4, characterized in that the wind wheel has two end rings; the two end rings are respectively fixed on both sides of the blade ring.

6. The fan wheel for a range hood according to claim 2, characterized in that a mounting seat is fixed on the motor; the mounting seat has a plurality of mounting holes, and the mounting holes are provided with rubber rings.