CN213175989U - Air valve system for efficient reciprocating piston type compressor - Google Patents

Abstract

The utility model discloses a high-efficient reciprocating piston compressor air valve system relates to compressor accessory field, with the air suction valve block redesign, decompose into two parts of valve tongue and body, new air suction valve block simplifies to former valve tongue part, the body part then becomes the air suction clearance piece, the two obtains through punching press, wire-electrode cutting, laser cutting or other processing methods respectively, then polish through the finishing process in surface, deburring and processing cutting surface, fix respectively at last and constitute new air suction valve block system on the valve plate through the laser welding mode. The utility model discloses a processing technology is simplified to the mode of independent processing to guarantee the machining precision of two parts and the flatness and the sealing performance of welding back suction valve piece. Therefore, adopt the utility model discloses can improve the performance of compressor, can ensure the reliability of compressor again, reduce the loss of mould, improve the machining efficiency and the quality of valve block of breathing in to show reduce cost, the practicality is strong.

Description

Air valve system for efficient reciprocating piston type compressor

Technical Field

The utility model relates to a compressor accessory field especially relates to a high-efficient reciprocating piston compressor is with valve block structure and pneumatic valve system of breathing in.

Background

The air valve is a core component of the reciprocating piston type compressor, particularly an air suction valve plate and an air discharge valve plate, plays a very important role in the operation process of the compressor, directly influences the air suction, compression and air discharge processes of the compressor, and influences other performance parameters of the compressor, such as noise, energy efficiency, reliability and the like. As shown in fig. 1, most of the existing air valve systems of reciprocating piston compressors are composed of an air suction valve plate, a valve plate, an air discharge valve plate and a stopper, the whole is fixed on a compressor cylinder body through bolts and a silencer, four corners of the air suction valve plate are fixed between a sealing gasket and the valve plate through bolts, and only the middle valve tongue part can be opened and closed to complete the air suction process of the compressor. The existing air suction valve plate is made of ultra-high-strength high-carbon steel and martensitic stainless steel, is obtained through stamping, then removes residual metal burrs of stamping through a surface finishing process and improves the edge quality of a cut surface, and the structure is shown in figure 2.

At present, the air suction valve plate adopts an integral processing mode, and efficient production is carried out through continuous stamping of a whole roll of steel strip with the same thickness, and the processing mode has the following characteristics:

1) the integral consistency of the air suction valve plate can be ensured by a pair of stamping dies;

2) the tongue part and the clearance groove of the body ensure the uniformity of the size through a die;

3) the process is simple, only the steel strip with a certain width needs to be punched to finish the process, and the material loss is less.

However, the following problems also arise:

the existence of the clearance groove can cause uneven stress distribution, and the flatness of the air suction valve plate is poor. Meanwhile, in the running process of the compressor, the air suction valve plate is not provided with a lift limiter, so that the motion working condition of the air suction valve plate is worse, and the air suction valve plate is more prone to failure compared with an exhaust valve plate. With the development of frequency conversion of compressors, the requirements on the suction valve plate are increasingly improved. In order to ensure the reliability of the compressor, in addition to the structural optimization, higher requirements are also put forward on the processing quality of the suction valve plate, and particularly, the processing quality of the peripheral edge of the valve tongue serving as a moving part and the service life of the suction valve plate are directly influenced by the residue of any processing defect.

In order to improve the volumetric efficiency of the compressor, the structure optimization of the suction valve plate is mainly carried out by reducing the thickness of the suction valve plate material on one hand and continuously reducing the width of a clearance groove between a valve tongue in the middle of the suction valve plate and a base body from 0.5mm to below 0.1mm on the other hand. Although theoretically, the structural change is beneficial to the improvement of the performance of the compressor, in the actual process of machining and producing the suction valve plate, the width of the clearance groove between the valve plate base body and the valve tongue part is reduced, so that the machining difficulty and the die loss are greatly increased, on one hand, the machining of the valve tongue part is greatly influenced, when the deburring is performed through surface finishing machining and the edge is polished, the machining of the clearance groove is incomplete, the residual tearing strip of the stamping machining cutting surface in the clearance groove is generated and becomes a stress concentration area and a crack source, the premature failure of the suction valve plate is easily caused, and the reliability of the compressor is finally influenced. On the other hand, the reduction of the clearance groove not only enables the size of a stamping die to be correspondingly reduced, the service life is shortened, the processing cost is obviously increased, but also can directly influence the flatness of the processed valve plate.

To sum up, how to a great deal of problems such as the poor and high manufacturing cost of structural reliability to current reciprocating piston compressor suction valve block, provide a novel suction valve block structure and air valve system, be the utility model discloses a problem that the urgent need be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-efficient reciprocating piston compressor is with valve block structure and pneumatic valve system of breathing in to improve the reliability of compressor, adapt to more abominable operating mode requirement, long service life, and easily realize automaticly, be favorable to raising the efficiency and reduce manufacturing cost.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a suction valve plate structure for a high-efficiency reciprocating piston compressor, which comprises a body clearance piece and a valve tongue formed by processing the body clearance piece in a split way, wherein the decomposed body clearance piece and the valve tongue are respectively used as a suction clearance piece and a new suction valve plate; the middle part of the body clearance sheet is provided with a mounting hole with the same outer contour as the valve tongue in shape, the valve tongue is assembled in the mounting hole, and the mounting hole is in clearance fit with the valve tongue.

Optionally, the body gap piece is machined from a carbon steel strip material, a stainless steel strip material or other materials meeting the requirements.

Optionally, the valve tongue is processed by using a high-strength martensite carbon steel strip material, a stainless steel strip material or other high-fatigue-performance materials.

Optionally, the tail of the new suction valve plate is welded to the suction gap plate by laser.

Optionally, the body gap piece is formed by stamping or machining, such as stamping, wire cutting, laser cutting, and the like.

Optionally, the valve tongue is formed by stamping or machining, such as stamping, linear cutting, laser cutting, and the like.

And simultaneously, the utility model provides a high-efficient reciprocating piston is valve system for compressor, including valve plate and foretell suction valve block structure, the bottom of new suction valve block weld in the valve plate, the clearance piece that breathes in welds in corresponding the one side of breathing in of valve plate, and with new suction valve block forms together suction valve block structure.

Optionally, the welding spot of the new suction valve plate is positioned at the tail part; the welding points of the air suction gap piece are one point or a plurality of points, and the welding points of the air suction gap piece are distributed on the periphery of the mounting hole.

Optionally, an exhaust valve plate is arranged on one exhaust side of the valve plate, and a lift limiter is arranged above the exhaust valve plate.

Optionally, the exhaust valve plate includes the valve plate body and with the exhaust valve tongue that the valve plate body components of a whole that can function independently set up, the exhaust valve tongue can regard as new exhaust valve plate to use alone, and during the use, new exhaust valve plate weld in the preset position of valve plate.

The split type processing has the following advantages:

1) by combining different materials, the original performance of the air suction valve plate is met, and meanwhile, the production cost of the air suction valve plate is remarkably reduced;

2) after the split machining, the machining quality of the valve tongue of the air suction valve plate can be effectively guaranteed, the qualification rate of the air suction valve plate is remarkably improved, the surface finishing machining after the stamping machining of the body part can be simplified to remove burrs, and the cost is reduced;

3) after the valve tongue and the body gap piece are processed in a split mode, the valve tongue and the body gap piece are respectively welded with the valve plate, the size of a gap groove can be guaranteed, the flatness of the air suction valve plate and the flatness of the air suction gap piece can be guaranteed through welding of different parts, the influence of installation stress is eliminated, and the performance of the compressor is guaranteed.

In addition, in order to ensure that the final finished product meets the size requirements specified in the drawing design in the split machining process, especially when a smaller clearance groove is designed, the sizes of different parts are strictly required in the split structure design, the requirements are ensured through a stamping die, and a specific tool clamp is required to be used for fixing the valve tongue and the body of the air suction valve plate in the welding process.

The utility model discloses for prior art gain following technological effect:

the utility model discloses with the air suction valve block redesign, decompose into two parts of valve tongue and body, new air suction valve block simplifies to former valve tongue part, and the body part then becomes the air suction gap piece, and the two obtains through stamping processing respectively, then carries out the finishing process in surface and polishes, deburring and processing section to fix through the laser welding mode respectively and constitute new air suction valve block system on the valve plate. The utility model discloses a processing technology is simplified to the mode of independent processing to guarantee the machining precision of two parts and the flatness and the sealing performance of welding back suction valve piece. Therefore, adopt the utility model discloses can improve the performance of compressor, can ensure the reliability of compressor again, reduce the loss of mould, improve the machining efficiency and the quality of valve block of breathing in to show reduce cost, the practicality is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art reciprocating piston compressor air valve system;

FIG. 2 is a schematic structural diagram of a suction valve plate structure of a conventional reciprocating piston compressor;

FIG. 3 is a schematic structural view of a body gap piece in the suction valve plate structure of the reciprocating piston compressor of the present invention;

FIG. 4 is a schematic structural view of a valve tongue in the suction valve plate structure of the reciprocating piston compressor of the present invention;

fig. 5 is a schematic structural diagram of the reciprocating piston type compressor air valve system of the present invention;

wherein the reference numerals are:

11. an air suction valve plate; 12. a valve plate; 13. an exhaust valve plate; 14. a lift limiter;

21. a body clearance piece; 22. a valve tongue; 23. welding spots; 24. a valve plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing a high-efficient reciprocating piston compressor is with valve block structure and pneumatic valve system of breathing in through the structure and the mounting means that change the valve block of breathing in, ensures the processingquality of this part, satisfies the performance promotion of compressor and the requirement of reliability simultaneously to show the cost that reduces the compressor pneumatic valve.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The first embodiment is as follows:

as shown in fig. 3-4, the present embodiment provides a novel suction valve plate structure for a reciprocating piston compressor, which includes a body gap piece 21 and a valve tongue 22 that are separately machined. In order to ensure the processing quality of the structure of the air suction valve plate, the air suction valve plate designed integrally is decomposed into two parts, namely a valve tongue 22 and a body gap piece 21, the valve tongue 22 becomes a new air suction valve plate, and the body gap piece 21 becomes an air suction gap piece. From the functional analysis, what really plays the core role on the air suction valve piece is the valve tongue position, and the body part mainly is used for fixed valve tongue, regulation clearance and sealed, as long as have suitable thickness and the same size other materials can satisfy above-mentioned function, and from the economic consideration, current air suction valve piece wholly uses expensive high strength martensite carbon steel or stainless steel, and the body part has occupied the main part of air suction valve piece, consequently considers to adopt the structure of components of a whole that can function independently to realize. Based on this, the valve tongue 22 of the present embodiment is made of high-strength martensitic carbon steel or stainless steel, the body gap piece 21 is made of common carbon steel or stainless steel, and the high-strength martensitic carbon steel or stainless steel is formed by stamping or machining, so as to manufacture the valve tongue and the body of the suction valve plate, and then the surface finishing, the removal of the residual metal burrs and the polishing of the cut surfaces are performed by the existing process. And then, the valve tongue and the body are respectively welded with the valve plate, so that the positioning precision and the uniformity of the width of the clearance groove can be effectively ensured, and particularly, the flatness and the sealing performance of the suction valve plate are improved.

In this embodiment, the deformation and flatness of the valve tongue 22, i.e., the new suction valve plate, are effectively controlled without being affected by the surrounding installation stress, and the new suction gap plate only participates in the gap adjustment and sealing action and does not affect the valve tongue 22.

In this embodiment, the valve tongue 22 is installed in the installation hole of the body gap piece 21 in a clearance fit manner, two ends of the tail of the valve tongue 22 extend outwards to form a clamping connection with the installation hole, and the specific structure is shown in fig. 5.

In this embodiment, the shape structure of the valve tongue 22 and the shape structure of the body gap piece 21 are both the same. The body gap piece 21 is also provided with a plurality of threaded mounting holes.

In this embodiment, as shown in fig. 5, the valve tongue 22, i.e. the new suction valve plate, is directly welded to the valve plate 24 through the tail portion, and the body gap piece 21, i.e. the suction gap piece, is also directly welded and fixed to the suction side of the corresponding valve plate 24, so as to form a new air valve system together with the new suction valve plate. In order to ensure the completeness of the air valve system, an exhaust valve plate and a lift limiter are arranged on the exhaust side corresponding to the valve plate 24. In this embodiment, the installation manner of the components of the air valve system is the prior art, as shown in fig. 1, the whole air valve system is fixed on the compressor cylinder body together with the muffler through bolts, four corners of the air suction valve plate 11 are fixed between the sealing gasket and the valve plate 12 through bolts, the exhaust valve plate 13 is installed on the exhaust side of the valve plate 12, and the lift limiter 14 is arranged above the exhaust valve plate 13.

The existing exhaust valve plate is of an integrally formed structure and can be directly connected with a lift limiter in a bolt or riveting mode, but the problem that the exhaust valve plate deviates from the position of an exhaust valve port can be caused by bolt connection or riveting, so that the exhaust valve plate is uneven in movement during working, the reliability is reduced, and the performance of a compressor is influenced. In order to avoid the problem, in the embodiment, the exhaust valve tongue in the exhaust valve plate and the valve plate body are also arranged in a split manner, the exhaust valve tongue is used as a new exhaust valve plate to be used independently, the new exhaust valve plate, namely the exhaust valve tongue is partially fixed at the corresponding position of the valve plate in advance in a welding mode, the problem that the valve tongue deviates from the position of the exhaust hole due to stress during subsequent bolt fastening or riveting is avoided, and the installation precision and the service life of the valve plate are improved, and the performance of the compressor of the whole air valve system is improved.

In this embodiment, as shown in fig. 5, the new suction valve plate and the suction gap plate are fixed by laser welding, the welding spot 23 of the new suction valve plate is only required to be located at the tail, and the welding spots 23 of the suction gap plate may be randomly distributed, and the number is not particularly limited, and may be performed at one point or multiple points.

In this embodiment, the valve plate 24 is made of cast iron, powder metallurgy, low-carbon steel, alloy steel, or stainless steel, and is formed by stamping or machining according to different thicknesses, and is suitable for welding.

In this embodiment, the vent valve plate also adopts super high strength high carbon steel and martensite stainless steel as the material, gets rid of the remaining metal burr of punching press and improves the processingquality of cut surface through punching press processing and surface finishing processing technology.

In the embodiment, the limiter is made of low-carbon steel, alloy steel or stainless steel materials, and burrs are removed and the quality of the section is improved mainly through stamping and surface finishing.

In this embodiment, the two components of the valve tongue 22 and the body gap piece 21 are independently processed by stamping, wherein the body part, i.e., the body gap piece 21 can be processed by using a carbon steel strip or a common stainless steel material with low price, as long as the thickness tolerance is ensured, and then the burrs are removed by a surface finishing process; the valve tongue 22, namely the new air suction valve plate, is made of the original high-performance carbon steel or stainless steel materials, the same processing mode as the processing mode of the exhaust valve plate is adopted, the influence of a clearance groove is avoided, the processing of the cut surface is more convenient, and the processing quality can be obviously improved.

Therefore, the air suction valve plate structure and the air valve system thereof disclosed by the embodiment have the following advantages:

1. high performance:

the suction valve plate structure is suitable for the design of the suction valve plate for reducing the clearance volume and the design of ensuring the flatness after the suction valve plate is thinned, so that the performance of the reciprocating piston compressor is improved.

2. The cost is reduced:

because the old integral suction valve plate is decomposed into the valve tongue and the body part, namely the valve tongue is used as a new suction valve plate, the body is changed into the suction gap plate, the design of the die structure can be simplified, the loss and the processing efficiency of the die can be improved, and the cost is reduced. The moving part of the air suction valve plate is mainly concentrated on the valve tongue part, and after the split structure is adopted, the valve tongue, namely the surface finishing of the new air suction valve plate, is not influenced by gaps, the processing efficiency and the processing quality can be obviously improved, the appearance of unqualified products is reduced, and the surface finishing of the body, namely the air suction gap plate, can be simplified, mainly takes deburring as the main part, and the processing cost is also reduced. On the other hand, the body of the air suction valve plate can be processed by low-cost carbon steel or common stainless steel, so that the cost of the air suction valve plate is obviously reduced.

3. High reliability:

by adopting the novel air suction valve plate structure, the design and the service life of a processing die are improved, the processing efficiency is improved, the subsequent rolling and polishing treatment is more sufficient, and the processing quality and the performance of the air suction valve plate are improved; in addition, a new suction valve plate is directly fixed on the valve plate through laser welding, the problem that the sealing is influenced by the deformation of the valve tongue caused by the previous mounting stress is solved, and the reliability of the compressor is guaranteed.

4. The automation is easy to realize:

adopt new suction valve block structure, can redesign installation and fixed mode, on the fixed valve plate of laser welding is carried out through automation line more easily.

5. The suction valve plate structure of the embodiment can be effectively applied to a reciprocating piston type refrigeration compressor air valve system of a single cylinder, and can also be popularized to a reciprocating piston type refrigeration compressor air valve system of multiple cylinders, such as a swash plate type and swing type reciprocating piston type refrigeration compression air valve system for an automobile air conditioning compressor and the like or other similar reciprocating piston type refrigeration compression air valve systems.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims (9)

1. An air valve system for a high-efficiency reciprocating piston compressor, characterized in that: the valve plate structure for the high-efficiency reciprocating piston compressor comprises a valve plate and a suction valve plate structure for the high-efficiency reciprocating piston compressor, wherein the suction valve plate structure for the high-efficiency reciprocating piston compressor comprises a body clearance piece and a valve tongue which is formed by processing the body clearance piece in a split mode, and the decomposed body clearance piece and the valve tongue are respectively used as the suction clearance piece and a new suction valve plate; the middle part of the body clearance sheet is provided with a mounting hole with the outer contour the same as the shape of the valve tongue, and the mounting hole is in clearance fit with the valve tongue; the bottom of the new air suction valve plate is welded on the valve plate, the air suction gap plate is welded on the air suction side corresponding to the valve plate, and the air valve system is formed by the air suction gap plate and the new air suction valve plate.

2. A gas valve system for a high efficiency reciprocating piston compressor as defined in claim 1, wherein: the body gap sheet is formed by processing a carbon steel strip or a stainless steel strip.

3. A gas valve system for a high efficiency reciprocating piston compressor as defined in claim 1, wherein: the valve tongue is formed by processing a high-strength martensite carbon steel belt or a stainless steel belt.

4. A gas valve system for a high efficiency reciprocating piston compressor as defined in claim 1, wherein: the tail part of the new air suction valve plate is welded to the air suction gap plate through laser.

5. A gas valve system for a high efficiency reciprocating piston compressor as defined in claim 1, wherein: the body clearance piece is formed by stamping or machining.

6. A gas valve system for a high efficiency reciprocating piston compressor as defined in claim 1, wherein: the valve flap is formed by stamping or machining.

7. A gas valve system for a high efficiency reciprocating piston compressor as defined in claim 1, wherein: the welding spot of the new air suction valve plate is positioned at the tail part; the welding points of the air suction gap piece are one point or a plurality of points, and the welding points of the air suction gap piece are distributed on the periphery of the mounting hole.

8. A gas valve system for a high efficiency reciprocating piston compressor as defined in claim 1, wherein: and an exhaust valve plate is arranged on one exhaust side of the valve plate, and a lift limiter is arranged above the exhaust valve plate.

9. A gas valve system for a high efficiency reciprocating piston compressor as defined in claim 8, wherein: the exhaust valve plate comprises a valve plate body and an exhaust valve tongue which is arranged in a split mode with the valve plate body, the exhaust valve tongue is independently used as a new exhaust valve plate, and the new exhaust valve plate is welded to the valve plate.

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