CN210624131U

CN210624131U - Vane pump rotor and vane pump capable of reducing noise

Info

Publication number: CN210624131U
Application number: CN201921552062.8U
Authority: CN
Inventors: 夏业文; 许仲秋; 刘光明; 佘笑梅
Original assignee: Hunan Oil Pump Co Ltd
Current assignee: Hunan Oil Pump Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-05-26
Anticipated expiration: 2029-09-18

Abstract

The utility model provides a vane pump rotor, including shaft hole, outer peripheral face and two terminal surfaces, be equipped with a plurality of blade grooves that are used for installing the blade on the outer peripheral face of rotor, a plurality of blade grooves distribute according to unequal interval along rotor circumference, be equipped with the compensating groove on arbitrary terminal surface of rotor or two terminal surfaces, the compensating groove is used for adjusting the barycenter of rotor, makes the barycenter of rotor and the coincidence of the geometric centre of rotor. The rotor with the structure can reduce pressure fluctuation and noise and ensure the balance of the rotor motion. The utility model also provides a can reduce the impeller pump of noise, including the pump body, pump cover, rotor, blade, its improvement point has mainly adopted the utility model provides a impeller pump rotor.

Description

Vane pump rotor and vane pump capable of reducing noise

Technical Field

The utility model relates to an engine lubrication system is a vane pump rotor particularly to and a vane pump that can reduce noise.

Background

Engine noise is a major source of vehicle noise and must be properly controlled and reduced in order to improve vehicle comfort. The engine speed and the oil pump speed are generally fixed speed ratios, so that order noise generated by the oil pump in the rotation process has a linear relation with the engine speed, and is specifically a certain multiple of the engine speed. The order, i.e. the frequency of the signal, corresponds to the frequency multiple of the rotational frequency of the rotating machine. The relationship among the order, the rotating speed and the frequency is as follows: order = frequency/rotational speed, the order being understood as the frequency of change of the signal over the period of one revolution of the rotating machine.

At present, in order to solve the problem of order noise of a vane pump in the industry, an unequal rotor is generally adopted, so that after the rotor rotates for a circle, superposed noise does not occur at the same position, and the order noise is reduced. For example, chinese utility model No. 2017209648358 discloses a vane type oil pump (publication No. CN 207438115U), which adopts a vane structure design with different distances, so as to effectively reduce the order characteristics and the order noise of the oil pump.

However, the adoption of the unequal rotor brings a new problem that the geometric center and the mass center of the unequal rotor are not coincident, so that an eccentric amount exists in the rotation process of the rotor, the movement is unbalanced, and the reliability of a product is inevitably influenced after a long time.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can reduce the noise can guarantee the balanced impeller pump rotor of motion again, still provides the impeller pump that adopts above-mentioned rotor structure can reduce the noise simultaneously.

In order to solve the technical problem, the utility model discloses a technical scheme about the impeller pump is: the utility model provides a vane pump rotor, includes shaft hole, outer peripheral face and two terminal surfaces, be equipped with a plurality of blade grooves that are used for installing the blade on the outer peripheral face of rotor, a plurality of blade grooves distribute according to unequal interval along rotor circumference, be equipped with the compensating groove on arbitrary terminal surface or two terminal surfaces of rotor, the compensating groove is used for adjusting the barycenter of rotor, makes the barycenter of rotor and the geometric center coincidence of rotor. The rotor with the structure can reduce pressure fluctuation and noise and ensure the balance of the rotor motion.

After the inventive concept of the balancing groove is established, the shape of the balancing groove can be regular or irregular such as long arc, kidney, triangle, square, circle, prism, etc.

Preferably, the balance groove is located close to the outer peripheral surface of the rotor

The number of the blade grooves is N, N included angles are formed among the N blade grooves, and the angles among the N included angles are not equal to each other or only part of the included angles are equal to each other.

The utility model provides a pair of can reduce vane pump of noise, including the pump body (1), pump cover (2), rotor, blade, its improvement point has mainly adopted the utility model provides a vane pump rotor.

The unequal rotor with the structure can obtain the following beneficial effects:

1) the pressure fluctuation is reduced, and the noise is reduced;

2) the abrasion between the pump body and the pump cover is reduced;

3) the balance groove is beneficial to reducing the weight;

4) the center of mass of the rotor is adjusted through the balance groove, so that the center of mass of the rotor is coincided with the geometric center of the rotor, the running balance of the unequal rotor can be ensured, and the reliability of a product is improved.

Drawings

Fig. 1 is a schematic view of a rotor structure in an embodiment of the present invention;

FIG. 2 is a schematic view of the angle between the vane grooves on the rotor according to the embodiment of the present invention;

the reference signs are:

1-blade groove 2-balance groove 3-shaft hole 4-rotor.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.

Example 1

As shown in FIGS. 1 and 2, a vane pump rotor comprises a shaft hole 3, an outer circumferential surface and two end surfaces, seven vane grooves 1 for mounting vanes are arranged on the outer circumferential surface of a rotor 4, the seven vane grooves 1 are distributed along the circumferential direction of the rotor at unequal intervals, and theta is formed between the seven vane grooves 1₁、θ₂、θ₃、θ₄、θ₅、θ₆、θ₇The included angles are seven, and the included angles are not equal to each other or only partially equal to each other.

As shown in fig. 1 and 2, the two end faces of the rotor 4 are provided with balance grooves 2, and the balance grooves 2 are used for adjusting the mass center of the rotor 1 so that the mass center of the rotor 1 coincides with the geometric center of the rotor 1. After the inventive concept of the balancing tank 2 is established, the shape of the balancing tank 2 may be a regular shape or an irregular shape such as a long arc, a kidney, a triangle, a square, a circle, a prism, etc. In the present embodiment, the shape of the balance groove 2 is a long arc shape, and the balance groove 2 is located close to the outer peripheral surface of the rotor 4.

Example 2

A vane pump capable of reducing noise comprises basic parts such as a pump body, a pump cover, a rotor, vanes and the like, as shown in figures 1 and 2, wherein the rotor 4 comprises a shaft hole 3, an outer peripheral surface and two end surfaces, a plurality of vane grooves 1 used for installing the vanes are arranged on the outer peripheral surface of the rotor 4, the vane grooves 1 are distributed along the circumferential direction of the rotor at unequal intervals, and included angles among the vane grooves 1 are mutually unequal or only part of included angles are equal; a balance groove 2 is arranged on any end face or two end faces of the rotor 4, and the balance groove 2 is used for adjusting the mass center of the rotor 4 so that the mass center of the rotor 4 is coincided with the geometric center of the rotor 4. Thus, the running balance of the unequal rotors can be ensured, and the reliability of the product is improved.

The above-mentioned embodiment is the utility model discloses the implementation scheme of preferred, in addition, the utility model discloses can also realize by other modes, any obvious replacement is all within the protection scope of the utility model under the prerequisite that does not deviate from this technical scheme design.

In order to make it easier for those skilled in the art to understand the improvement of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and in order to clarify, some other elements have been omitted from this document, those skilled in the art should recognize that these omitted elements may also constitute the content of the present invention.

Claims

1. The utility model provides a vane pump rotor, includes shaft hole (3), outer peripheral face and two terminal surfaces, be equipped with a plurality of blade grooves (1) that are used for installing the blade on the outer peripheral face of rotor (4), a plurality of blade grooves (1) distribute its characterized in that according to unequal interval along rotor circumference: any end face or two end faces of the rotor (4) is/are provided with a balance groove (2), and the balance groove (2) is used for adjusting the mass center of the rotor (4) so that the mass center of the rotor (4) coincides with the geometric center of the rotor (4).

2. The vane pump rotor as set forth in claim 1, wherein: the shape of the balancing groove (2) is long arc, kidney, triangle, square or round.

3. The vane pump rotor as set forth in claim 1, wherein: the balance groove (2) is positioned close to the outer peripheral surface of the rotor (4).

4. The vane pump rotor as set forth in claim 1, wherein: the number of the blade grooves (1) is N, N included angles are formed among the N blade grooves (1), and the angles among the N included angles are not equal to each other or only partial included angles are equal to each other.

5. The utility model provides a can reduce vane pump of noise, includes the pump body, pump cover, rotor (4), blade, its characterized in that: the rotor (4) is a vane pump rotor according to any one of claims 1 to 4.