CN220791566U

CN220791566U - Impeller and low-noise water pump

Info

Publication number: CN220791566U
Application number: CN202221019362.1U
Authority: CN
Inventors: 程益冰; 余健; 任立权
Original assignee: Shaoxing Erco Electric Co ltd
Current assignee: Shaoxing Erco Electric Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2024-04-16
Anticipated expiration: 2032-04-29

Abstract

The utility model relates to the technical field of water pump manufacturing, in particular to an impeller and a low-noise water pump, which reduce the impact of a medium on the pump body of the water pump by changing the interval between the impeller and the pump body or changing the shape and the number of water vanes or changing the interval and the shape and the number of the water vanes at the same time, thereby reducing the noise generated by the impact.

Description

Impeller and low-noise water pump

Technical Field

The utility model relates to the technical field of water pump manufacturing, in particular to an impeller and a low-noise water pump.

Background

The water pump is used for the zero cold water gas water heater and the wall hanging stove, and has the functions of pressurization and circulation.

The rotor is used as a power output part in the water pump, the water pump is connected with an external power supply, and then electric energy is converted into mechanical energy through energy conversion, so that the rotor runs, and a medium (clean water) generates kinetic energy through the rotor impeller to flow. Vibration is generated in the running process of the water pump, so that vibration noise is formed; the medium flows fast in the pipeline, can impact the inner wall of the pipeline, and also can generate noise. Along with the continuous improvement of the comfort requirement of consumers, the requirement on the whole noise is higher and higher, so that the noise of the water pump is expected to be reduced to improve the use comfort, and the noise of the water pump can be effectively reduced by modifying the impeller.

As shown in fig. 1 and 2, the front view and the cross-sectional view of the rotor are shown, the rotor comprises an impeller, the impeller is fixed on a rotor plastic frame through ultrasonic welding, and as shown in fig. 3 to 5, the front view, the side view and the rear view of the impeller are shown, and water vanes are uniformly distributed on the impeller in the circumferential direction. The reason why the impeller causes noise mainly includes the following two points: 1. the distance between the impeller and the pump shell is too small and is 3mm, so that the impact noise between the medium and the pump shell is larger; 2. the medium is thrown out from between two adjacent water blades, and as the shape of the water blades is unreasonably arranged, the contact angle between the thrown-out medium and the inner wall of the pump shell is overlarge, and impact noise is generated.

Based on this, the present application is hereby proposed.

Disclosure of Invention

The utility model aims to provide an impeller and a low-noise water pump so as to reduce noise.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

an impeller comprises 5 water leaves which are circumferentially and uniformly arranged, wherein the arc radius of the water leaves is 17-22 mm, and the radian of the water leaves is 0.5235-0.698; or 6 water leaves are circumferentially and uniformly arranged, the arc radius of each water leaf is between 13 and 15mm, and the radian of each water leaf is between 1.9195 and 2.094; or 7 water leaves are uniformly arranged in the circumferential direction, the arc radius of the water leaves is between 14mm and 16mm, and the radian of the water leaves is between 1.2215 and 1.396.

Further, the diameter of the impeller is 40mm to 41 mm.

The scheme of the utility model provides a low-noise water pump, which comprises the impeller.

The scheme of the utility model also provides another low-noise water pump, which comprises an impeller, wherein the distance between the impeller and the inner wall of the water pump is between 6mm and 7 mm.

Further, the diameter of the impeller is between 40mm and 41 mm.

Further, the impeller comprises 5 water leaves which are circumferentially and uniformly arranged, the arc radius of the water leaves is between 17mm and 22mm, and the radian of the water leaves is between 0.5235 and 0.698; or 6 water leaves are circumferentially and uniformly arranged, the arc radius of each water leaf is between 13 and 15mm, and the radian of each water leaf is between 1.9195 and 2.094; or 7 water leaves are uniformly arranged in the circumferential direction, the arc radius of the water leaves is between 14mm and 16mm, and the radian of the water leaves is between 1.2215 and 1.396.

The utility model has the advantages that:

1. the flow channel is optimized by changing the distance between the impeller and the pump body, so that the impact of the medium on the pump body of the water pump and the inner wall of the external pipeline can be reduced, the noise generated by the impact is reduced, and meanwhile, the medium flows out of the water outlet of the pump body more smoothly due to the fact that the distance is increased;

2. the angle of the medium thrown out is adjusted by changing the shape and the number of the water blades, so that the contact force between the medium and the inner wall of the pump body is reduced, and the noise generated by impact is reduced;

3. meanwhile, the distance between the impeller and the pump body and the shape and the number of the water blades are changed, the angle of the medium thrown out is adjusted while the flow channel is optimized, the noise generated by impact is reduced, and the medium flows out from the water outlet of the pump body more smoothly.

Drawings

FIG. 1 is a schematic front view of a rotor in the background art;

FIG. 2 is a schematic cross-sectional view of a rotor in the background art;

FIG. 3 is a schematic front view of an impeller in the background art;

FIG. 4 is a schematic side view of an impeller of the prior art;

FIG. 5 is a schematic rear view of an impeller of the prior art;

FIG. 6 is a schematic rear view of an impeller of an embodiment;

FIG. 7 is a schematic view of the radius and arc of the arc of a wheel in an embodiment;

description of the reference numerals

1 impeller, 2 rotor plastic frame, 3 permanent magnet, 4 graphite bearing, 5 water leaf.

Detailed Description

The present utility model is described in further detail below with reference to examples.

For noise reduction, this embodiment includes three schemes, scheme one: changing the shape and the number of the water leaves; scheme II: changing the distance between the impeller and the inner wall of the water pump; scheme III: and simultaneously adopts a scheme one and a scheme three.

According to the scheme I, the low-noise water pump is provided, impellers are arranged in the water pump, and the impellers are provided with water leaves, so that the number of the water leaves is 5 or 6 or 7 in consideration of practical application, cost and other factors. When the number of the water leaves is 5, the arc radius of the water leaves is between 17 and 22mm, and the radian of the water leaves is between 0.5235 and 0.698, as shown in fig. 6, the arc radius and the radian of the water leaves can be referred to fig. 7; when the number of the water leaves is 6, the arc radius of the water leaves is between 13mm and 15mm, the radian of the water leaf is 1.9195-2.094; when the number of the water leaves is 7, the arc radius of the water leaves is between 14mm and 16mm, and the radian of the water leaves is between 1.2215 and 1.396. Corresponding arc radiuses and radians are limited for different numbers of water blades, so that when a medium is thrown out by the impeller, the contact angle between the medium and the water pump is as small as possible, the contact force between the medium and the inner wall of the pump body is reduced, and noise generated by impact is reduced. Preferably, the diameter of the impeller is between 40mm and 41 mm.

Aiming at a scheme II, the embodiment provides a low-noise water pump, wherein an impeller is arranged in the water pump, and the distance between the impeller and the inner wall of the water pump is between 6mm and 7 mm. The flow channel is enlarged by increasing the distance between the impeller and the inner wall of the pump body, so that the impact of the medium on the pump body of the water pump and the inner wall of the external pipeline can be reduced, the noise generated by the impact is reduced, and meanwhile, the medium flows out of the water outlet of the pump body more smoothly due to the increase of the distance.

Aiming at the scheme III, the embodiment provides a low-noise water pump, the inner diameter of a pump body of the water pump is 47mm, the diameter of an impeller is between 40 and 41mm, the distance between the impeller and the inner wall of the water pump is between 6 and 7mm, and compared with 3mm in the prior art, the flow channel is enlarged, and the effect of the scheme II is achieved.

Further, the number and shape of the water vanes on the impeller are changed: setting the number of the water leaves to be 5 or 6 or 7, wherein when the number of the water leaves is 5, the arc radius of the water leaves is between 17mm and 22mm, the radian of the water leaves is between 0.5235 and 0.698, as shown in figure 6, the arc radius and the radian of the water leaves can be referred to in figure 7; when the number of the water leaves is 6, the arc radius of the water leaves is between 13mm and 15mm, and the radian of the water leaves is between 1.9195 and 2.094; when the number of the water leaves is 7, the arc radius of the water leaves is between 14mm and 16mm, and the radian of the water leaves is between 1.2215 and 1.396. Thereby achieving the effect of the first scheme.

The above embodiments are only for illustrating the concept of the present utility model and not for limiting the protection of the claims of the present utility model, and all the insubstantial modifications of the present utility model using the concept shall fall within the protection scope of the present utility model.

Claims

1. The impeller comprises water leaves, and is characterized in that 5 water leaves are circumferentially and uniformly arranged, the arc radius of each water leaf is 17-22 mm, and the radian of each water leaf is 0.5235-0.698.

2. The impeller comprises 6 water leaves and is characterized in that the water leaves are uniformly distributed in the circumferential direction, the arc radius of each water leaf is between 13mm and 15mm, and the radian of each water leaf is between 1.9195 and 2.094.

3. The impeller comprises 7 water leaves and is characterized in that 7 water leaves are circumferentially and uniformly arranged, the arc radius of each water leaf is between 14mm and 16mm, and the radian of each water leaf is between 1.2215 and 1.396.

4. An impeller according to any one of claims 1 to 3, wherein the diameter of the impeller is between 40mm and 41 mm.

5. A low noise water pump comprising an impeller according to any one of claims 1 to 4.