A fan wheel for range hood

Abstract

The present application proposes a fan wheel for a range hood, which relates to the technical field of range hoods. The fan wheel for a range hood comprises: a hub, a blade ring composed of a plurality of blades; the blades are evenly distributed along the circumference of the hub; the blades gradually bend outward from both ends to the middle. Since the middle of the blades of the fan wheel bends outward, it is beneficial to guide the airflow, reduce the airflow that impacts the fan housing, and thus reduce the vibration noise generated by the housing during the operation of the fan.

Description

Technical Field

[0001] The present application relates to the technical field of range hoods, and in particular to a fan wheel for a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It is installed above the kitchen stove and can quickly extract the waste from stove combustion and the fumes that are harmful to the human body produced during the cooking process and discharge them outdoors, reducing pollution, purifying the air, and also providing safety protection against poison and explosion.

[0003] Current range hoods generate a lot of vibration noise when in operation; generally speaking, the greater the air volume of the range hood, the greater the noise. Summary of the invention

[0004] The technical problem to be solved by the present application is to propose a fan wheel for a range hood to reduce the noise of the range hood during operation, in view of the above-mentioned deficiencies in the prior art.

[0005] The fan wheel for the range hood comprises: a hub, and a blade ring composed of a plurality of blades; the blades are evenly distributed along the circumference of the hub; and the blades are gradually bent outwards from both ends to the middle.

[0006] Optionally, 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.

[0007] Optionally, the wind wheel is driven by a motor;

[0008] 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.

[0009] Optionally, 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 limit pin; the limit 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;

[0010] 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.

[0011] Optionally, the middle portion of the blade is fixed to the outer ring of the hub.

[0012] Optionally, the wind wheel has two end rings; the two end rings are respectively fixed on two sides of the blade ring.

[0013] Optionally, 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.

[0014] Optionally, the blades are arranged to be inclined along the circumferential direction.

[0015] The present application proposes a fan wheel for a range hood, the fan wheel for the range hood comprising: a hub, a blade ring consisting of a plurality of blades; the blades are evenly distributed along the circumference of the hub; the blades gradually bend outward from both ends to the middle. Since the middle of the blades of the fan wheel bends outward, it is beneficial to guide the airflow, reduce the airflow that impacts the fan housing, and further reduce the vibration noise generated by the housing during the operation of the fan.

[0016] Furthermore, the motor is provided with a rubber ring during installation to reduce vibration caused by the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a fan wheel for a range hood according to an exemplary embodiment.

[0018] Figure 2 It is a schematic structural diagram showing a fan wheel for a range hood in another direction according to an exemplary embodiment.

[0019] Figure 3 It is a schematic diagram of the exploded structure of a fan wheel for a range hood according to an exemplary embodiment.

[0020] Figure 4 It is a schematic diagram of the exploded structure of a fan wheel for a range hood in another direction according to an exemplary embodiment. DETAILED DESCRIPTION

[0021] The following is the specific embodiment of the present application and in conjunction with the accompanying drawings, the technical scheme of the present application is further described, but the present application is not limited to these embodiments. In the following description, specific details such as specific configuration and assembly are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear 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 present application. In addition, for clarity and brevity, the description of known functions and structures has been omitted.

[0022] The embodiment of the present application shows a fan wheel for a range hood, which has low vibration and noise during operation.

[0023] Specifically, the fan wheel for the range hood comprises: a hub, a blade ring composed of a plurality of blades; the blades are evenly distributed along the circumference of the hub; the blades gradually bend outward from both ends to the middle. Since the middle of the blades of the fan wheel bends outward, it is beneficial to guide the airflow, reduce the airflow that impacts the fan housing, and further reduce the vibration noise generated by the housing during the operation of the fan.

[0024] In addition, the motor is provided with a rubber ring when installed, which can reduce the vibration caused by the motor.

[0025] The fan wheel for the range hood shown in the embodiment of the present application is further described below in conjunction with the accompanying drawings.

[0026] refer to Figure 1 and Figure 2 The fan wheel for the range hood comprises: a hub 1, and a blade ring 2 composed of a plurality of blades 21; the blades 21 are evenly distributed along the circumference of the hub 1; and the blades 21 are gradually bent outward from both ends to the middle.

[0027] Specifically, the blades 21 are gradually bent outward from both ends to the middle, so that when the wind wheel rotates, the airflow on both sides of the wind wheel is concentrated to the middle part, reducing the airflow leaking from both sides of the wind wheel, avoiding the airflow leaking from both sides of the wind wheel causing excessive impact on the housing, thereby reducing the vibration of the housing. In addition, by guiding the airflow to the middle part, turbulence and wind noise caused by turbulence are reduced.

[0028] In the embodiment of the present application, the distance between the middle of the blade 21 and the axis of the hub 1 is 1 cm longer than the distance between the two ends of the blade 21 and the axis of the hub 1. In practice, it is found that the blade 21 bending outward by 1 cm is a better choice.

[0029] refer to Figure 2 In the embodiment of the present application, the wind wheel is driven by a motor 3.

[0030] refer to Figure 1 The hub 1 includes an outer ring 11, an inner ring 12, and a connecting rib 13 connecting the outer ring 11 and the inner ring 12; the blades 21 are fixed on the outer ring 11; the inner ring 12 is detachably fixedly connected to the motor 3. The detachable connection between the motor 3 and the inner ring 12 is conducive to the maintenance and cleaning of the wind wheel, and also increases the versatility of various components of the wind wheel.

[0031] refer to Figure 3 and Figure 4In the embodiment of the present application, the inner ring 12 has a central opening 121; a side of the central opening 121 has a slot 122; the output shaft 31 of the motor 3 is provided with a stop pin 32; the stop pin 32 passes through the output shaft 31 of the motor 3 along 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;

[0032] The output shaft 31 of the motor 3 passes through the central opening 121 of the inner ring 12 of the hub 1 , so that the limit pin 32 is clamped in the clamping groove 122 ; the nut 4 is screwed into the 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 .

[0033] The limit pin 32 is stuck in the slot 122 to limit the relative rotation between the inner ring 12 of the hub 1 and the output shaft 31 of the motor 3. The nut 4 is screwed into the end of the output shaft 31 to fix the axial position of the inner ring 12 of the hub 1 on the output shaft 31.

[0034] Generally speaking, the connection between the output shaft 31 of the motor 3 and the inner ring 12 of the wheel hub 1 is relatively simple in structure, and the wheel hub 1 can be disassembled by simply unscrewing the nut 4, which is very convenient.

[0035] It should be noted that the rotation speed of the wind wheel is relatively low, and the above-mentioned simple connection structure can achieve a stable connection.

[0036] In the embodiment of the present application, the middle part of the blade 21 is fixed to the outer ring 11 of the hub 1. This can reduce the length of the free end of the blade 21, thereby reducing the elastic deformation of the blade 21 when it is subjected to the reaction force of the airflow, thereby reducing the vibration intensity of the blade 21 when it is working.

[0037] In the embodiment of the present application, the wind wheel has two end rings 5 ​​; the two end rings 5 ​​are respectively fixed on two sides of the blade ring 2 .

[0038] The end ring 5 is beneficial to increasing the overall stability of each blade 21 during operation and reducing the vibration intensity of the blade 21 during operation.

[0039] refer to Figure 3 and Figure 4 In the embodiment of the present application, a mounting base 33 is fixed on the motor 3; the mounting base 33 has a plurality of mounting holes, and the mounting holes are provided with rubber rings 331.

[0040] The motor 3 needs to be fixed on the housing of the fan, and the rubber ring 331 can absorb the vibration from the motor 3 to prevent the vibration from being transmitted to the fan housing, thereby reducing the vibration of the housing.

[0041] In the embodiment of the present application, the blades 21 are arranged to be inclined along the circumferential direction.

[0042] It should be noted that the blades 21 are tilted so that the installation direction of the blades 21 is kept consistent with the flow direction of the airflow as much as possible, thereby reducing the impact of excessive airflow on the blades 21 and further reducing the vibration of the blades 21.

[0043] The specific embodiments described herein are merely examples of the spirit of the present application. A person skilled in the art of the present application may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present application or exceed the scope defined by the attached claims.

Claims

1. A fan wheel for a range hood, characterized in that: The fan wheel for the range hood comprises: a hub, and a blade ring composed 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 arranged obliquely along the circumferential direction.

2. The fan wheel for a range hood according to claim 1, 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 part of the blade is fixed on the outer ring of the hub.

5. The fan 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.

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