CN219795561U - Sliding vane in rotary compressor pump body - Google Patents

Abstract

The utility model discloses a sliding vane in a pump body of a rotary compressor, which comprises a sliding vane body, wherein a needle roller is arranged on one side of the sliding vane body, which is close to an eccentric rotor, and is contacted with the eccentric rotor through the needle roller; and one side of the sliding vane body, which is close to the air cylinder, is provided with a sliding vane spring, the sliding vane spring is always in a compressed state, and the rolling pin at the other side of the sliding vane body is always in contact with the eccentric rotor under the action of the elasticity of the sliding vane spring. The cylindrical rolling needle capable of rolling is arranged in the U-shaped groove of the sliding vane in the rotary compressor pump body, the U-shaped groove is exposed out of the rolling needle, the original sliding friction between the sliding vane and the rotor is changed into rolling friction, the energy consumed by friction is reduced, the energy utilization rate and the efficiency of the compressor are improved, and meanwhile, the abrasion loss of the rotor is reduced.

Description

Sliding vane in rotary compressor pump body

Technical Field

The utility model relates to the technical field of rotary compressor accessories, in particular to a sliding vane in a rotary compressor pump body.

Background

The main part of the rotary compressor is a pump body which mainly comprises a crankshaft, a rotor, a cylinder, a sliding vane, an upper bearing and a lower bearing. The rotor is sleeved on the upper cam of the crankshaft, the crankshaft passes through the hole site of the upper bearing, and the rotor is placed in the cylinder in an eccentric mode. The space between the rotor and the cylinder is divided into two volumes by a sliding vane. The rotor is driven by the motor to rotate, so that the volumes of the cylinders at the two sides of the sliding vane are changed, and the sucking and compressing process of the refrigerant is completed. The rotary compressor has a simple structure and relatively high efficiency, so that the rotary compressor has a plurality of application occasions.

The friction between the sliding vane and the rotor in the existing compressor is sliding friction, the friction force is large, the energy consumption is high, the piston abrasion loss is large, the long-term use has an influence on the performance, and meanwhile the sliding friction between the sliding vane and the rotor also makes the noise large, and the cold start is rough.

At present, in order to reduce abrasion of a sliding vane and noise and energy consumption caused by sliding friction in the running process are increased, current measures adopted in the industry are to cover lubricating oil on the inner wall of the sliding vane and the surface of a rotor to form an oil film to reduce friction coefficient, or to reduce friction coefficient between the sliding vane and a sliding vane groove in a coating increasing mode, so that a structure with long service life and relatively suitable processing difficulty is needed for optimization in the rotary compressor industry, so that the working smoothness of a compressor is improved, the running smoothness of the compressor is improved, and the compressor is reduced.

Disclosure of Invention

The utility model aims to provide a sliding vane in a pump body of a rotary compressor, so as to solve the defects of the sliding vane in the traditional rotary compressor body.

In order to solve the technical problems, the utility model provides a sliding vane in a pump body of a rotary compressor, which divides a space between the inside of a cylinder and an eccentric rotor into two volumes;

the sliding vane comprises a sliding vane body, a rolling needle is arranged on one side, close to the eccentric rotor, of the sliding vane body, and the sliding vane body is contacted with the eccentric rotor through the rolling needle;

and one side of the sliding vane body, which is close to the air cylinder, is provided with a sliding vane spring, the sliding vane spring is always in a compressed state, and the rolling pin at the other side of the sliding vane body is always in contact with the eccentric rotor under the action of the elasticity of the sliding vane spring.

Preferably, a U-shaped groove for installing the roller pin is formed in the side edge of the sliding vane body, the radian range of the U-shaped groove is 180-240 degrees, and the contact part of the roller pin and the eccentric rotor protrudes out of the U-shaped groove.

Preferably, the U-shaped groove is in clearance fit with the needle roller, so that the needle roller freely rolls in the U-shaped groove.

Preferably, the side edges of the two sides of the opening of the U-shaped groove are provided with a closing-in.

Preferably, the number of the closing-in holes is two, and the closing-in holes are symmetrically distributed on two sides of the U-shaped groove.

Preferably, the length of the roller pin is equal to that of the sliding vane body, and the roller pin is inserted from one end of the U-shaped groove and rolls in the U-shaped groove under the restriction of the closing-in.

Preferably, first inclined planes are symmetrically machined on two sides, close to the eccentric rotor, of the sliding vane body and are used for avoiding interference in the process that the needle roller approaches or leaves in the process of rotating and contacting with the sliding vane body.

Preferably, the sliding sheet body is provided with a spring groove for installing the sliding sheet spring, and the spring groove is used for sleeving and installing the sliding sheet spring.

Preferably, the diameter of the sliding vane spring is gradually increased from one end contacting with the spring groove.

Preferably, the sliding vane body is symmetrically processed with second inclined planes at two sides close to the air cylinder.

Compared with the prior art, the utility model has the beneficial effects that:

1. the U-shaped groove of the sliding vane in the rotary compressor pump body is internally provided with the cylindrical rolling needle capable of rolling, and the U-shaped groove is exposed out of the rolling needle, so that the original sliding friction between the sliding vane and the rotor is changed into rolling friction, the energy consumed by friction is reduced, the energy utilization rate and the efficiency of the compressor are improved, and meanwhile, the abrasion loss of the rotor is reduced;

2. the sliding vane in the pump body of the sliding vane rotary compressor is provided with the limiting closing opening, the closing opening is taken as a part of the U-shaped groove to protrude and extend to the upper part of the U-shaped groove, and finally, no matter in a moving state or a non-moving state after the rolling needle is installed in place, the rolling needle is prevented from falling along the long side direction, and the rolling needle can be limited in the U-shaped groove 4;

3. the sliding vane in the rotary compressor pump body is symmetrically machined on the two sides, close to the cylinder, of the second inclined plane, so that the lubrication efficiency of the sliding vane and a sliding vane groove of the cylinder can be obviously improved, lubricating oil can enter a gap between the sliding vane groove and the sliding vane more conveniently, and friction resistance of the sliding vane is further reduced.

Drawings

FIG. 1 is a schematic view of the inside of a rotary compressor pump body with a sliding vane according to the present utility model;

FIG. 2 is a cross-sectional view of the inside of a rotary compressor pump body with a slide mounted therein provided by the present utility model;

FIG. 3 is a schematic view of a vane in a rotary compressor pump according to the present utility model;

FIG. 4 is a schematic view of a sliding plate according to the present utility model;

FIG. 5 is a cross-sectional view of a slide body provided by the present utility model.

In the figure: 1. a slide body; 2. needle roller; 3. a slide spring; 4. a U-shaped groove; 5. closing in; 6. a first inclined surface; 7. a spring groove; 8. a second inclined surface; 10. rotating a slide sheet in a pump body of the compressor; 20. a cylinder; 30. and an eccentric rotor.

Detailed Description

The utility model is described in further detail below with reference to the attached drawings and specific examples. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Examples

As shown in fig. 1 and 2, the present utility model provides a vane 10 in a rotary compressor pump body, dividing a space between the inside of a cylinder 20 and an eccentric rotor 30 into two volumes; the sliding sheet is shown in fig. 3 and comprises a sliding sheet body 1, wherein a needle roller 2 is arranged on one side of the sliding sheet body 1, which is close to the eccentric rotor 30, and the sliding sheet body is contacted with the eccentric rotor 30 through the needle roller 2; and a sliding vane spring 3 is arranged on one side of the sliding vane body 1, which is close to the air cylinder 20, and the sliding vane spring 3 is always in a compressed state, so that the needle roller 2 on the other side of the sliding vane body 1 is always in contact with the eccentric rotor 30 under the action of the elasticity of the sliding vane spring 3.

Specifically, referring to fig. 4 and 5, a U-shaped groove 4 for mounting the needle roller 2 is formed on the side of the sliding body 1, the arc range of the U-shaped groove 4 is 180-240 degrees, and the contact portion of the needle roller 2 and the eccentric rotor 30 protrudes out of the U-shaped groove 4.

Further, the U-shaped groove 4 is in clearance fit with the needle roller 2, so that the needle roller 2 freely rolls in the U-shaped groove 4.

The side edges of the two sides of the opening of the U-shaped groove 4 are provided with closing-in openings 5, the two closing-in openings 5 are symmetrically distributed on the two sides of the U-shaped groove 4, the length of the needle roller 2 is equal to that of the sliding sheet body 1, the needle roller 2 is inserted from one end of the U-shaped groove 4, and the needle roller is limited by the closing-in openings 5 to roll in the U-shaped groove 4. The closing-in 5 is taken as a part of the U-shaped groove 4 to protrude and extend to the upper part of the U-shaped groove 4, so that the rolling needle 2 is finally ensured not to fall off along the long side direction no matter in a moving state or a non-moving state after the rolling needle 2 is installed in place, and the rolling needle 2 can be limited in the U-shaped groove 4.

Specifically, the two sides of the sliding sheet body 1, which are close to the eccentric rotor 30, are symmetrically provided with first inclined planes 6 for avoiding interference in the process of approaching or leaving the rolling needle 2 in the process of rotating and in the process of contacting with the sliding sheet body 1.

Specifically, the sliding sheet body 1 is provided with a spring groove 7 for installing the sliding sheet spring 3, the sliding sheet spring 3 is arranged in a sleeved mode, the diameter of the sliding sheet spring 3 is gradually increased from one end, which is in contact with the spring groove 7, of the sliding sheet spring 3, so that the diameter of the sliding sheet spring 3 at the contact end of the air cylinder 20 is larger than that of the sliding sheet spring in contact with the spring groove 7, and on the premise of providing enough elastic force, the service life of the conical spring is longer, and the elastic force is more stable.

Specifically, the sliding sheet body 1 is symmetrically machined with second inclined planes 8 near the two sides of the air cylinder 20, so that the friction area of the sliding sheet body 1 and the sliding sheet groove of the air cylinder 20 is reduced, friction resistance is reduced, and meanwhile, the second inclined planes 8 are more beneficial to lubricating oil to enter the gap between the sliding sheet body 1 and the sliding sheet groove of the air cylinder 20, so that friction resistance of the sliding sheet body 1 is further reduced.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims (4)

1. A slide vane (10) in a pump body of a rotary compressor divides a space between the inside of a cylinder (20) and an eccentric rotor (30) into two volumes;

the sliding vane is characterized by comprising a sliding vane body (1), wherein a needle roller (2) is arranged on one side, close to the eccentric rotor (30), of the sliding vane body (1), and the sliding vane body is contacted with the eccentric rotor (30) through the needle roller (2);

a sliding vane spring (3) is arranged on one side, close to the air cylinder (20), of the sliding vane body (1), the sliding vane spring (3) is always in a compressed state, and under the elastic force of the sliding vane spring (3), the rolling needle (2) on the other side of the sliding vane body (1) is always in contact with the eccentric rotor (30);

the side edge of the sliding vane body (1) is provided with a U-shaped groove (4) for installing the roller pin (2), the radian range of the U-shaped groove (4) is 180-240 degrees, and the contact part of the roller pin (2) and the eccentric rotor (30) protrudes out of the U-shaped groove (4);

the U-shaped groove (4) is in clearance fit with the needle roller (2), so that the needle roller (2) freely rolls in the U-shaped groove (4);

the two sides of the opening of the U-shaped groove (4) are provided with closing-up openings (5), and the two closing-up openings (5) are symmetrically distributed on the two sides of the U-shaped groove (4); the length of the needle roller (2) is equal to that of the sliding sheet body (1), and the needle roller (2) is inserted from one end of the U-shaped groove (4) and rolls in the U-shaped groove (4) under the limit of the closing-in (5);

the sliding vane body (1) is symmetrically processed with first inclined planes (6) on two sides close to the eccentric rotor (30), and the first inclined planes are used for avoiding interference in the process of approaching or leaving in the process of rotating and contacting with the sliding vane body (1).

2. A vane (10) in a rotary compressor pump body according to claim 1, characterized in that the vane body (1) is provided with a spring groove (7) for mounting the vane spring (3).

3. A vane (10) in a rotary compressor pump body according to claim 2, characterized in that the vane spring (3) increases in diameter from the end in contact with the spring groove (7).

4. A vane (10) in a rotary compressor pump body according to claim 1, characterized in that the vane body (1) is symmetrically machined with second inclined surfaces (8) near both sides of the cylinder (20).