CN220869940U - A kind of compressor - Google Patents

Abstract

The utility model relates to the technical field of compressors, and particularly discloses a spring for a compressor and the compressor, which are used for being assembled in a spring hole of a cylinder body and comprise a front end invalid ring section, a middle valid ring section and a tail end invalid ring section which are connected in sequence; adjacent two rings of springs of the front end invalid ring section and the tail end invalid ring section are mutually fastened, and a gap is reserved between the adjacent two rings of springs of the middle valid ring section; setting the maximum outer diameter of the tail end invalid ring section as D1, the maximum outer diameter of the middle valid ring section as D2, the maximum outer diameter of the front end invalid ring section as D3 and the inner diameter of the spring hole as D4, wherein D1 is larger than D4, and D4 is larger than D2 and D3; the utility model can improve the reliability and stability of spring installation, and the traditional procedure of clamping by knocking the spring through plastic deformation is cancelled when the spring is installed, thereby effectively saving the installation production time and improving the production efficiency of the compressor.

Description

A kind of compressor

Technical Field

The utility model relates to the technical field of compressors, in particular to a compressor.

Background

The compressor is generally composed of a pumping assembly, a motor assembly, a shell assembly, a filter flask and other components; the pumping assembly at least comprises an upper support, a cylinder body, a lower support, a piston, a shaft, a blade, a spring and other parts to form a compression cavity, and a kinematic pair formed by the spring and the blade forms reciprocating motion and is used for compressing high-low pressure intervals in the cavity to realize the cyclic process of sucking low-temperature low-pressure refrigerant gas, compressing the high-temperature high-pressure gas and then discharging the high-temperature high-pressure gas.

When each part of the pumping assembly runs, the blades realize reciprocating motion of the blades mainly through radial force given by rotation of the piston and compression force provided by the springs, the springs are spiral springs, and the springs are generally of a two-section structure and are divided into a front-end invalid ring and a tail-end valid ring.

In order to maintain the stability of the spring, the tail end of the spring is generally fixed in contact with the inner wall of the cylinder. When the pumping shaft rotates, the vane and the kinematic pair of the spring reciprocate, the effective ring at the tail end of the spring provides compression force for the vane, and the tail end of the spring contacts with the inner wall of the spring hole of the cylinder body to provide fixed support.

In the scheme that the tail end of the spring is directly fixed on the inner wall of the spring hole of the cylinder body, in the existing production process, in order to facilitate the spring to be plugged into the spring hole, the tail end of the spring and the inner wall of the spring hole of the cylinder body are designed in a clearance mode, and the periphery of the spring hole of the cylinder body is chamfered, so that the effects of deburring and chamfering guiding spring installation are achieved. After the spring is installed in, an additional spring beating process is needed, namely, the tail end of the spring is knocked to generate plastic deformation, and interference fixation is generated with the spring hole through the plastic deformation of the spring, so that the spring is blocked and does not fly out; however, the process of knocking the spring deformation is generally performed manually by feel, the operation efficiency is low, and no effective evaluation mode exists. If the tail end of the spring is deformed too much, the risk of disqualification of the service life of the spring in long-term operation exists; if the spring is deformed too little, slight vibrations may cause the spring to fly directly during the compressor assembly process, and the spring may miss-load causing the compressor to fail.

Disclosure of utility model

Aiming at the problems of complex spring installation process, more required time and unstable installation, the utility model provides the compressor, which can improve the reliability and stability of spring installation, and the traditional procedure of clamping by knocking the spring through plastic deformation is omitted when the spring is installed, so that the installation production time is effectively saved, and the production efficiency of the compressor is improved.

In order to solve the technical problems, the utility model provides the following specific scheme:

A compressor comprises a cylinder body, blades and the springs;

The cylinder body is sleeved outside the blade, a spring hole perpendicular to the blade is formed in the cylinder body, and the spring is arranged in the spring hole; the spring comprises a front end invalid ring section, a middle valid ring section and a tail end invalid ring section which are connected in sequence;

Adjacent two rings of springs of the front end invalid ring section and the tail end invalid ring section are mutually fastened, and a gap is reserved between the adjacent two rings of springs of the middle valid ring section;

Setting the maximum outer diameter of the tail end invalid ring section as D1, the maximum outer diameter of the middle valid ring section as D2, the maximum outer diameter of the front end invalid ring section as D3 and the inner diameter of the spring hole as D4, wherein D1 is larger than D4, and D4 is larger than D2 and D3;

the blade is formed with spacing portion in the position of spring hole relatively, the spacing butt in spacing portion of the invalid circle section in front end of spring, the tail end of the invalid circle section auto-lock of tail end of spring is fixed in the tail end in spring hole, when the pumping axle of compressor rotates, reciprocates through the kinematic pair of blade and spring, and the middle effective circle section of spring provides compressive force for the blade, plays fixed support's effect to the spring by the spring hole of cylinder body.

In some embodiments, the ratio of the maximum outer diameter D1 of the tail end invalid ring section to the inner diameter D4 of the spring hole is set as P, the value range of P is 1.01-1.10, and the ratio of the tail end invalid ring section to the inner diameter of the spring hole is limited, so that the spring is ensured to be more smooth in installation, and the reliability and stability after installation are improved.

In some embodiments, the number of the spring turns of the tail end ineffective ring section is less than or equal to ten, so that the tail end structure of the spring is enhanced, the stability of the spring is better improved, and the reliability improving effect of the spring is realized.

In some embodiments, the tail end invalid ring section is in a straight pressing shape or a taper shape, so that the inner wall of the spring hole is better clamped by the spring tail end invalid ring section for self-locking, and the installation effect that the spring is self-locked and not ejected is achieved.

In some embodiments, the number of spring turns of the middle effective ring segment is at least two, and the outer diameter size of the middle effective ring segment increases gradually from the front end ineffective ring segment to the tail end ineffective ring segment, and the taper-shaped middle effective ring segment has the effects of mounting guide and gradually strengthening the structural strength of the spring.

In some embodiments, the minimum outer diameter of the middle effective ring section is set as D2, and the maximum outer diameter D3 of the front end ineffective ring section is smaller than or equal to the minimum outer diameter D2 of the middle effective ring section, so that the front end ineffective ring plays a role in installation guiding, and the middle effective ring section in a taper shape plays a role in gradually reinforcing the structural strength of the spring.

In some embodiments, the inner wall of the spring hole is provided with threads, so that the dead coil section at the tail end is better self-locking and fixed when the spring is installed.

In some embodiments, the length of the thread is less than the length of the trailing inactive loop segment, ensuring better self-locking securement of the trailing inactive loop segment when the spring is installed.

In some embodiments, the outer peripheral side of the spring hole is formed with a straight-sided chamfer, the chamfer has a side length of no more than 0.4mm or a chamfer radius of no more than 0.4mm, ensuring better self-locking fixation of the inactive tail ring segment when the spring is installed.

Compared with the prior art, the utility model has the beneficial effects that: according to the compressor provided by the utility model, the spring is designed into the three-section structure, the three-section structure is divided into the front end invalid ring section, the middle valid ring section and the tail end invalid ring section, the maximum outer diameter of each section of the spring and the inner diameter of the spring hole of the cylinder body are limited, the spring is ensured to be mounted without adopting the traditional working procedure of plastically deforming and clamping the spring by knocking, the bad risk of spring flying out and the risk of reducing the service life of the spring can be reduced, the mounting operation time is saved, and the production efficiency of the compressor is improved.

Drawings

FIG. 1 is a schematic view of a spring according to an embodiment of the present utility model;

FIG. 2 is a graph of maximum outside diameter dimension identification for each segment of a spring provided in an embodiment of the present utility model;

FIG. 3 is a schematic view of a cylinder according to an embodiment of the present utility model;

FIG. 4 is a view of the cylinder spring Kong Poumian of FIG. 3;

FIG. 5 is a schematic view of another cylinder according to an embodiment of the present utility model;

FIG. 6 is a view of the cylinder spring Kong Poumian of FIG. 5;

fig. 7 is a schematic view of a structure of a compressor provided in an embodiment of the present utility model;

FIG. 8 is an enlarged view of portion A of FIG. 7;

1-a front end invalid ring segment;

2-an intermediate effective ring segment;

3-tail end invalid circle segment;

4-cylinder; 41-spring holes; 411-thread;

5-leaf blades; 51-limit part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are some, but not all, embodiments of the utility model.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

For example, a spring for a compressor, for assembly in a spring bore of a cylinder, comprises a front end inactive coil section, a middle active coil section, and a rear end inactive coil section connected in sequence; adjacent two rings of springs of the front end invalid ring section and the tail end invalid ring section are mutually fastened, and a gap is reserved between the adjacent two rings of springs of the middle valid ring section; the maximum outer diameter of the tail end invalid ring section is set to be D1, the maximum outer diameter of the middle valid ring section is set to be D2, the maximum outer diameter of the front end invalid ring section is set to be D3, the inner diameter of the spring hole is set to be D4, D1 is larger than D4, and D4 is larger than D2 and D3.

The embodiment provides a spring for compressor designs the spring into the syllogic structure, divide into the invalid circle section of front end, the invalid circle section of centre and tail end to inject the biggest external diameter size of each section of spring and the spring hole internal diameter size of cylinder body, when guaranteeing to install the spring, need not to adopt traditional spring plastic deformation chucking's process of beating, and can reduce the bad risk that the spring flies out and the risk that spring life reduces, save installation operating time, improve the production efficiency of compressor.

Embodiment one:

The compressor is generally composed of a pumping assembly, a motor assembly, a shell assembly, a filter flask and other components; the pumping assembly at least comprises an upper support, a cylinder body, a lower support, a piston, a shaft, a blade, a spring and other parts to form a compression cavity, and a kinematic pair formed by the spring and the blade forms reciprocating motion and is used for compressing high-low pressure intervals in the cavity to realize the cyclic process of sucking low-temperature low-pressure refrigerant gas, compressing the high-temperature high-pressure gas and then discharging the high-temperature high-pressure gas.

As shown in fig. 1 to 6, a spring for a compressor is assembled in a spring hole 41 of a cylinder 4, and when a pumping shaft rotates, the spring is reciprocated by a pair of a vane 5 and the spring, and the contact between the inner wall of the spring hole 41 and the spring provides a fixed support for the spring.

The springs comprise a front end invalid ring section 1, a middle valid ring section 2 and a tail end invalid ring section 3 which are sequentially connected, wherein two adjacent springs of the front end invalid ring section 1 and the tail end invalid ring section 3 are mutually fastened, and a gap is reserved between the two adjacent springs of the middle valid ring section 2.

Specifically, let the maximum outer diameter of the tail end invalid ring segment 3 be D1, the maximum outer diameter of the middle valid ring segment 2 be D2, the maximum outer diameter of the front end invalid ring segment 1 be D3, and the inner diameter of the spring hole 41 be D4, wherein D1 is greater than D4, and D4 is greater than D2 and D3.

In one example, the maximum outer diameter D1 of the trailing inactive leg 3 is 10.3mm, the maximum outer diameter D2 of the intermediate active leg 2 is 9.5mm, the maximum outer diameter D3 of the leading inactive leg 1 is 7.2mm, the inner diameter D4 of the spring bore 41 is 9.9mm, the relationship between the maximum outer diameter size of each leg of the spring and the inner diameter size of the spring bore 41 of the cylinder 4 satisfies D1 greater than D4, and D4 greater than D2 and D3.

According to the spring provided in the example, the spring is designed into a three-section structure and is divided into the front end invalid ring section 1, the middle valid ring section 2 and the tail end invalid ring section 3, the maximum outer diameter of each section of the spring and the inner diameter of the spring hole 41 of the cylinder body 4 are limited, the spring is ensured to be mounted without adopting the procedure of plastic deformation clamping of the traditional knocking spring, the bad risk of spring flying out and the risk of spring life reduction can be reduced, the mounting operation time is saved, and the production efficiency of the compressor is improved.

Embodiment two:

The ratio of the maximum outer diameter D1 of the tail end invalid ring section 3 to the inner diameter D4 of the spring hole 41 is set to be P, the value range of P is 1.01-1.10, and the spring installation is ensured to be smoother by limiting the inner diameter ratio of the tail end invalid ring section 3 to the inner diameter of the spring hole 41, and the reliability and stability after the installation are improved.

For example, the maximum outer diameter D1 of the tail end inactive loop section 3 is 10.3mm, the inner diameter D4 of the spring hole 41 is 9.9mm, wherein D1/D4 is equal to 1.04, the value range of P satisfies 1.01 p.ltoreq.1.10, and specific values of the maximum outer diameter D1 of the tail end inactive loop section 3 and the inner diameter D4 of the spring hole 41 are listed in this example, only for facilitating understanding of the value range of P, the values of the maximum outer diameter D1 of the tail end inactive loop section 3 and the inner diameter D4 of the spring hole 41 are not limited, so long as the ratio P of the maximum outer diameter D1 of the tail end inactive loop section 3 to the inner diameter D4 of the spring hole 41 falls within the range of 1.01.ltoreq.1.10.

The spring for the compressor provided in the example limits the ratio of the maximum outer diameter D1 of the ineffective ring section 3 at the tail end of the spring to the inner diameter D4 of the spring hole 41, ensures that a conventional procedure of knocking the spring to plastically deform and clamp the spring is not required when the spring is installed, and can reduce the bad risk of spring flying out and the risk of reducing the service life of the spring.

Embodiment III:

the number of spring turns of the tail end invalid ring section 3 is less than or equal to ten, so that the tail end structure of the spring is enhanced, the stability of the spring is better improved, and the reliability lifting effect of the spring is realized.

In one example, the number of the spring turns of the tail end invalid ring segment 3 is three, however, the number of the spring turns of the tail end invalid ring segment 3 can be set to be four, five or six according to actual requirements, and the number of the spring turns is less than or equal to ten.

The tail end invalid ring section 3 is in a straight pressing shape or a taper shape, so that the inner wall of the spring hole 41 is better clamped by the spring tail end invalid ring section 3 for self-locking, and the installation effect that the spring is self-locked and not ejected is realized.

Referring to fig. 1, the inactive coil section 3 of the spring tail end is in a flat press-fit shape, that is, the outer diameters of two adjacent coils of springs in the inactive coil section 3 of the tail end are the same. If the tail end invalid ring section 3 is in a taper shape, the outer diameter size of two adjacent rings of springs in the tail end invalid ring section 3 is gradually increased along the direction from the middle valid ring section 2 to the tail end invalid ring section 3, so that the effect of gradually reinforcing the structural strength of the springs is achieved.

Embodiment four:

The number of spring turns of the middle effective ring section 2 is at least two, the outer diameter size of the middle effective ring section 2 increases gradually from the front end ineffective ring section 1 to the tail end ineffective ring section 3, and the taper-shaped middle effective ring section 2 has the effects of installation guiding and gradually strengthening the structural strength of the spring.

In one example, the number of the spring turns of the middle effective ring section 2 is four, for example, a first ring spring, a second ring spring, a third ring spring and a fourth ring spring, the outer diameter sizes of two adjacent rings of springs are gradually increased from the front end ineffective ring section 1 to the tail end ineffective ring section 3, for example, the outer diameter size of the first ring spring is 7.2mm, the outer diameter size of the second ring spring is 7.9mm, the outer diameter size of the third ring spring is 8.7mm, the outer diameter size of the fourth ring spring is 9.5mm, and the outer diameter sizes of the middle effective ring section 2 are gradually increased along with the increase of the number of the spring turns.

The minimum outer diameter of the middle effective ring section 2 is D2, the maximum outer diameter D3 of the front end ineffective ring section 1 is smaller than or equal to the minimum outer diameter D2 of the middle effective ring section 2, the front end ineffective ring plays a role in installation and guiding, and the taper-shaped middle effective ring section 2 plays a role in gradually reinforcing the structural strength of the spring.

For example, the minimum outer diameter D2 of the middle effective ring section 2 is 7.2mm, the maximum outer diameter D3 of the front end ineffective ring section 1 is 7.2mm, and the limitation that the maximum outer diameter D3 of the front end ineffective ring section 1 is smaller than or equal to the minimum outer diameter D2 of the middle effective ring section 2 is satisfied, so that when the spring is installed, the guiding function can be achieved through the front end ineffective ring section 1, and the effect of gradually strengthening the structural strength of the spring is achieved through the middle effective ring section 2.

Fifth embodiment:

Referring to fig. 3-8, the present application also provides a compressor comprising a cylinder 4, a vane 5 and a spring according to any of the above embodiments; the cylinder body 4 is sleeved outside the blade 5, a spring hole 41 perpendicular to the blade 5 is formed in the cylinder body 4, and the spring is installed in the spring hole 41.

The position of the blade 5 relative to the spring hole 41 is provided with a limiting part 51, the front end invalid ring section 1 of the spring is in limiting abutting connection with the limiting part 51, the tail end invalid ring section 3 of the spring is self-locked and fixed at the tail end of the spring hole 41, when the pumping shaft of the compressor rotates, the blade 5 and the kinematic pair of the spring reciprocate, the middle valid ring section 2 of the spring provides compression force for the blade 5, and the spring hole 41 of the cylinder body 4 plays a role in fixing and supporting the spring.

In this example, the spring adopts the three-section structure, is the invalid circle section 1 of front end, the invalid circle section 2 of centre and the invalid circle section 3 of tail end respectively, and the invalid circle section 3 of tail end's biggest external diameter is greater than the internal diameter of spring hole 41, the internal diameter of spring hole 41 is greater than the biggest external diameter of the invalid circle section 2 of centre and the biggest external diameter of the invalid circle section 1 of front end, through this definition, when guaranteeing to install the spring, need not to adopt traditional knocking spring plastic deformation chucking's process, and can reduce the risk that the spring flies out and the risk that spring life reduces, save installation operating time, improve compressor's production efficiency.

In order to ensure better self-locking fixation of the tail end invalid ring section 3 during spring installation, threads 411 are arranged on the inner wall of the spring hole 41, and the length of the threads 411 is smaller than that of the tail end invalid ring section 3.

In one application scenario, the outer peripheral side of the spring hole 41 is formed with a straight-sided chamfer, the length of the chamfer is not more than 0.4mm or the radius of the chamfer is not more than 0.4mm, and the tail end invalid ring section 3 is ensured to be better self-locked and fixed during spring installation.

For example, the chamfer has a side length C of 0.35mm and a chamfer radius R of 0.35mm.

In summary, the spring for the compressor provided by the utility model is designed into a three-section structure, is divided into the front end invalid ring section, the middle valid ring section and the tail end invalid ring section, limits the maximum outer diameter of each section of the spring and the inner diameter of the spring hole of the cylinder body, ensures that the working procedure of plastic deformation clamping of the traditional knocking spring is not required when the spring is installed, reduces the bad risk of spring flying out and the risk of reducing the service life of the spring, saves the installation operation time and improves the production efficiency of the compressor.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the 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 according to the specific circumstances.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Claims (9)

1. A compressor, characterized by comprising a cylinder body (4), a blade (5) and a spring;

The cylinder body (4) is sleeved outside the blade (5), a spring hole (41) perpendicular to the blade (5) is formed in the cylinder body (4), and the spring is installed in the spring hole (41);

The spring comprises a front end invalid ring section (1), a middle valid ring section (2) and a tail end invalid ring section (3) which are connected in sequence;

Adjacent two circles of springs of the front end invalid circle section (1) and the tail end invalid circle section (3) are mutually fastened, and a gap is reserved between the adjacent two circles of springs of the middle valid circle section (2);

Setting the maximum outer diameter of the tail end invalid ring section (3) as D1, the maximum outer diameter of the middle valid ring section (2) as D2, the maximum outer diameter of the front end invalid ring section (1) as D3 and the inner diameter of the spring hole as D4, wherein D1 is larger than D4, and D4 is larger than D2 and D3;

The blade (5) is provided with a limiting part (51) at the position opposite to the spring hole (41), the front end invalid ring section (1) of the spring is in limiting contact with the limiting part (51), and the tail end invalid ring section (3) of the spring is self-locked and fixed at the tail end of the spring hole (41).

2. The compressor according to claim 1, wherein the ratio of the maximum outer diameter D1 of the tail end invalid ring section (3) to the inner diameter D4 of the spring hole is set to be P, and the value of P is 1.01-1.10.

3. Compressor according to claim 1, characterized in that the number of spring turns of the trailing inactive coil section (3) is less than or equal to ten.

4. Compressor according to claim 1, characterized in that the tail end inactive collar (3) is of a flat press-fit shape or a taper shape.

5. The compressor according to claim 1, characterized in that the number of spring turns of the intermediate active coil section (2) is at least two, and the outer diameter dimension of the intermediate active coil section (2) increases progressively from the leading inactive coil section (1) to the trailing inactive coil section (3).

6. The compressor according to claim 5, wherein the minimum outer diameter of the intermediate effective ring segment (2) is set to D2, and the maximum outer diameter D3 of the front end ineffective ring segment (1) is equal to or smaller than the minimum outer diameter D2 of the intermediate effective ring segment (2).

7. Compressor according to claim 1, characterized in that the inner wall of the spring hole (41) is provided with threads (411).

8. Compressor according to claim 7, characterized in that the length of the thread (411) is smaller than the length of the tail end inactive collar segment (3).

9. The compressor according to claim 1, wherein the outer peripheral side of the spring hole (41) is formed with a straight-sided chamfer having a side length of not more than 0.4mm or a chamfer radius of not more than 0.4mm.