阅读说明：本技术 一种压缩机泵体结构、泵体组件及压缩机 (Compressor pump body structure, pump body subassembly and compressor ) 是由 张心爱 王珺 吴健 闫鹏举 张大鹏 于 2020-11-28 设计创作，主要内容包括：本发明提供一种压缩机泵体结构、泵体组件及压缩机。压缩机泵体结构,包括气缸和设置在气缸上的法兰组件,气缸和/或法兰组件上设置有焊接结构,焊接结构包括：焊接部和分隔部,焊接部,在焊接部上形成用于焊接的焊接点,焊接部上形成有凸起结构,凸起结构向分隔部凸出形成,焊接点位于焊接部的外侧,并与凸起结构相对设置；分隔部,在气缸和/或法兰组件的径向上位于焊接部的内侧,使焊接部与气缸和/或法兰组件的主体部分之间分隔,避免焊接对气缸和/或法兰组件的主体部分造成影响；焊接结构沿气缸和/或法兰组件的周向设置有多个。本发明通过焊接结构吸收焊接应力以及热量,避免对泵体结构的精加工部分造成影响。(The invention provides a compressor pump body structure, a pump body assembly and a compressor. Compressor pump body structure, including cylinder and the flange subassembly of setting on the cylinder, be provided with welded structure on cylinder and/or the flange subassembly, welded structure includes: the welding part is provided with a welding point for welding, a protruding structure is formed on the welding part and protrudes towards the partition part, and the welding point is positioned on the outer side of the welding part and is opposite to the protruding structure; the partition part is positioned on the inner side of the welding part in the radial direction of the cylinder and/or the flange assembly, so that the welding part is separated from the main body part of the cylinder and/or the flange assembly, and the influence of welding on the main body part of the cylinder and/or the flange assembly is avoided; the welding structure is provided in plurality along the circumference of the cylinder and/or the flange assembly. The welding structure absorbs welding stress and heat, and the influence on the finish machining part of the pump body structure is avoided.)

1. A compressor pump body structure is characterized by comprising an air cylinder and a flange assembly arranged on the air cylinder, wherein a welding structure is arranged on the air cylinder and/or the flange assembly and is used for welding and fixing the compressor pump body structure,

the welded structure includes: a welding part and a separating part which are arranged on the outer wall of the casing,

the welding part is provided with a welding point for welding, a protruding structure is formed on the welding part and protrudes towards the partition part, and the welding point is positioned on the outer side of the welding part and is opposite to the protruding structure;

a partition located inside the weld in a radial direction of the cylinder and/or the flange assembly, partitioning between the weld and a main body portion of the cylinder and/or the flange assembly;

the welding structure is provided in plurality along the circumference of the cylinder and/or the flange assembly.

2. The compressor pump body structure according to claim 1, wherein the partition is configured as a hole, groove, or cavity structure formed on the cylinder and/or flange assembly.

3. The compressor pump body structure according to claim 2, wherein the partition structure forms an arc-shaped hole in a circumferential direction of the cylinder and/or the flange and penetrates in an axial direction of the cylinder and/or the flange.

4. The compressor pump body structure according to claim 3, wherein the boss structure is configured as an arc-shaped boss structure in an axial cross section of the cylinder and/or flange assembly.

5. The compressor pump body structure according to claim 4, wherein the welded structure is configured in an axisymmetric shape, and a symmetry axis thereof perpendicularly intersects a central axis of the cylinder and/or flange assembly.

6. The compressor pump body structure of claim 5, wherein the weld is located on an axis of symmetry of the welded structure.

7. The compressor pump body structure according to claim 2, wherein a gap is provided between the projection structure and a radially inner side wall of the partition portion.

8. The compressor pump body structure according to claim 2, wherein the thickness of the welding portion is D, and the maximum thickness of the portion of the welding portion where the protruding structure is located is D, wherein D is greater than or equal to 3mm and less than or equal to 10 mm; d is more than or equal to 5mm and less than or equal to 15 mm; D-D is more than or equal to 2 mm.

9. The compressor pump body structure according to claim 8, wherein an axial through hole is further provided in the cylinder and/or the flange, and the axial through hole is provided between two adjacent welding structures.

10. A compressor pump body assembly, characterized by comprising a compressor pump body structure according to any one of claims 1 to 9.

11. A compressor, comprising a housing and the compressor pump body structure according to any one of claims 1 to 9, or the compressor pump body assembly according to claim 10, wherein the welded structure of the compressor pump body structure is welded and fixed to the inner wall of the housing.

Technical Field

The invention relates to the technical field of compressors, in particular to a compressor pump body structure, a pump body assembly and a compressor.

Background

The rolling rotor compressor is a compressor which realizes the change of the working volume of a cylinder by means of the rolling of a cylindrical rotor of an eccentric device in the cylinder, and further realizes the processes of air suction, compression and air exhaust. The conventional rolling rotor compressor mainly comprises a shell assembly, an upper cover, a lower cover, a pump body assembly, a motor assembly, a liquid distributor component and the like.

The casing assembly and the upper and lower covers are matched to form a closed structure, and the pump body assembly is welded inside the closed compressor casing through a flange or a cylinder part of the pump body assembly. The pump body assembly comprises an air cylinder, a roller, a crankshaft, an upper flange assembly, a lower flange assembly (comprising an upper flange, a lower flange, an exhaust valve plate and a valve plate limiting baffle) and a sliding sheet, wherein the pump body components are mutually matched to form a closed high-pressure cavity (an exhaust cavity or a compression cavity) and a closed low-pressure cavity (a suction cavity), and the sliding sheet is in clearance fit with an air cylinder sliding sheet groove. The pump body low pressure chamber is communicated with an external air conditioning system through a liquid separator, the motor is in interference fit with a crankshaft in the pump body assembly to drive the pump body crankshaft to do periodic rotary motion, so that the slide sheet is driven to do reciprocating motion in the slide sheet groove, the volume of the high-low pressure chamber is changed periodically, when the volume of the high-pressure chamber is reduced to a certain degree, the gas pressure in the compression chamber reaches or exceeds the backpressure borne by the valve sheet above the flange exhaust port, the valve sheet is opened, the gas in the compression chamber is exhausted out of the chamber through the flange exhaust port (namely, the inner space of the shell), and then enters the air conditioning system through an exhaust passage of the upper cover assembly, and periodic suction and.

The pump body assembly is fixed on the inner wall of the shell through spot welding, two common welding modes are welding a cylinder and a flange, and in the welding process of the pump body assembly and the shell, welding stress is generated due to inward extrusion of welding spots, and the cylinder or the flange is often deformed. The cylinder welding mode can lead to the interior circle of cylinder and cylinder sliding vane groove welding deformation and arouse pump body leakproofness problems such as reveal to reduce compressor volumetric efficiency, serious person still can lead to the compressor pump body to move unsmoothly and produce the reliability risk. The welding flange can avoid the deformation of the cylinder, but can lead the flange seat to be caused by the welding stress to cause the deformation of the bearing, thereby increasing the abrasion of the bearing and the problems of poor crankshaft torsion or poor assembly of the clearance between the stator and the rotor of the motor, such as the performance, the noise and the reliability of the compressor.

Disclosure of Invention

In view of this, the present invention provides a compressor pump body structure, a pump body assembly and a compressor, which are at least used for solving the technical problem existing in the prior art that welding of a compressor pump body easily affects welding of the pump body, and specifically:

in a first aspect, the invention provides a compressor pump body structure, which comprises a cylinder and a flange assembly arranged on the cylinder, wherein a welding structure is arranged on the cylinder and/or the flange assembly and is used for welding and fixing the compressor pump body structure,

the welded structure includes: a welding part and a separating part which are arranged on the outer wall of the casing,

the welding part is provided with a welding point for welding, a protruding structure is formed on the welding part and protrudes towards the partition part, and the welding point is positioned on the outer side of the welding part and is opposite to the protruding structure;

the partition part is positioned on the inner side of the welding part in the radial direction of the cylinder and/or the flange assembly, so that the welding part is separated from the main body part of the cylinder and/or the flange assembly, and the influence of welding on the main body part of the cylinder and/or the flange assembly is avoided;

the welding structure is provided in plurality along the circumference of the cylinder and/or the flange assembly.

Further optionally, the partition is configured as a hole, slot or cavity structure formed on the cylinder and/or flange assembly.

Further optionally, the partition structure forms an arc-shaped hole along the circumferential direction of the cylinder and/or the flange and penetrates in the axial direction of the cylinder and/or the flange.

Further optionally, the raised structure is configured as an arc-shaped raised structure in axial cross-section of the cylinder and/or flange assembly.

Further optionally, the welded structure is configured in an axisymmetrical shape, and a symmetry axis thereof perpendicularly intersects a central axis of the cylinder and/or the flange assembly.

Further optionally, the weld point is located on an axis of symmetry of the welded structure.

Further optionally, the raised structure has a gap with a radially inner side wall of the partition.

Further optionally, the thickness of the welding part is D, and the maximum thickness of the part of the protruding structure on the welding part is D, wherein D is greater than or equal to 3mm and less than or equal to 10 mm; d is more than or equal to 5mm and less than or equal to 15 mm; D-D is more than or equal to 2 mm.

Further optionally, an axial through hole is further formed in the cylinder and/or the flange, and the axial through hole is formed between two adjacent welding structures.

In a second aspect, the invention provides a compressor pump body assembly, which is characterized by comprising the compressor pump body structure.

In a third aspect, the present invention provides a compressor, which includes a housing and the above compressor pump structure, or a compressor pump assembly, wherein a welding structure of the compressor pump structure is welded and fixed to an inner wall of the housing.

The welding structure is arranged on the cylinder and/or the flange assembly and used for welding and fixing the compressor pump body, and the welding structure is used for absorbing welding stress, heat and deformation generated by the welding stress. On the premise of ensuring the welding strength of the compressor, the compressor has better stress homogenization effect, thereby effectively improving the structural deformation of the flange (or the cylinder) caused by welding.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

FIG. 1 is a schematic view of an upper flange structure of a pump body structure of a compressor according to an embodiment of the present invention;

FIG. 2 is a schematic view illustrating a welding state of a pump body structure of a compressor according to an embodiment of the invention;

fig. 3 shows an enlarged view at a in fig. 2.

In the figure:

1. an upper flange; 11. welding the part; 12. a partition portion; 13. a raised structure; 14. a welding point; 15. an axial through hole; 2. a housing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

According to the invention, the welding structure is arranged on the compressor pump body structure and used for welding and mounting the body, the hollow structure and the protruding structure can eliminate the influence of welding stress on the pump body structure, and meanwhile, the welding stress can be uniformly solved, and the strength of the welding structure is improved, so that the welding strength is improved, the reliability of the compressor is enhanced, and meanwhile, the welding deformation and the influence thereof on the performance, noise and vibration of the compressor are greatly weakened. The present invention will be described in detail with reference to specific examples.

The invention provides a compressor pump body structure which comprises an air cylinder and a flange assembly arranged on the air cylinder, wherein a welding structure is arranged on the air cylinder and/or the flange assembly and is used for welding and fixing the compressor pump body structure.

As shown in fig. 1 and 2, the welding structure includes a welding portion 11 and a partition portion 12, a welding point 14 is formed on the welding portion 11, and is used for welding with a structure fixedly connected with the pump body, such as the inner wall of the shell 2 of the compressor; the partition part 12 is located on the inner side of the welding part 11 in the radial direction of the cylinder and/or the flange assembly, so that the welding part 11 is separated from the main body part of the cylinder and/or the flange assembly, and the main body part, namely an assembly finish machining part of the cylinder and/or the flange assembly is prevented from being influenced by welding.

Preferably, the partition 12 may be provided in a hole, a groove or a cavity structure at a radial edge of the cylinder and/or the flange assembly, in an embodiment of the present invention, the partition 12 is a through hole structure that penetrates in an axial direction of the cylinder and/or the flange assembly, and the partition 12 may prevent welding stress, heat and deformation generated under the welding stress generated by welding on the welding portion 11 from being transmitted to a main body portion of the cylinder and/or the flange assembly, so as to prevent the welding from affecting the main body portion of the cylinder and/or the flange assembly, so as to ensure assembly accuracy of various components inside the pump body, such as a vane, a roller, a crankshaft, and the like, and thus improve performance of the compressor.

The welding part 11 is formed with a convex structure 13, the convex structure 13 is formed to protrude towards the inner side of the partition part 12, the welding point 14 is arranged corresponding to the convex structure 13, and the welding stress is absorbed and decomposed by the convex structure 13.

The flange subassembly is including setting up upper flange 1 and the lower flange at the cylinder both ends, uses below to set up welded structure on upper flange 1 as the example and introduces welded structure:

the radial edge of the upper flange 1 is provided with a welding structure, and the welding structure is provided with a plurality of flanges 1 in the circumferential direction. In the present embodiment, the partition portion 12 is a through hole penetrating in the axial direction of the upper flange 1, and the partition portion 12 is provided such that the welded portion 11 is formed radially outside the partition portion 12, the welded portion 11 is configured as a thin-walled structure, and the welded portion 11 is separated from the main body portion of the upper flange 1.

Preferably, in the present embodiment, the partition portion 12 is configured as an arc-shaped hole, that is, the partition portion 12 extends parallel to the radial outer edge of the upper flange 1 to form an arc-shaped hole, and the corresponding welding portion 11 is configured as an arc-shaped structure. Preferably, the raised structure 13 is configured as an arc-shaped raised structure 13, i.e. the outer edge profile of the raised structure 13 in a radial cross section of the upper flange 1 is arc-shaped. The projection structure 13 serves to disperse the welding stress generated by the welding point 14 while improving the strength of the outer wall, and a gap is provided between the projection structure 13 and the radially inner side wall of the partition portion 12, so that the welding stress can be prevented from being transmitted to the main body portion of the upper flange 1, or the force is applied to the main body portion of the upper flange 1 through the projection structure 13 due to the deformation of the outer wall.

Preferably, the welding point 14 is located at the center of the cross section of the protruding structure 13, that is, the distance between the welding point 14 and the protruding structure 13 is the same, so that the protruding structure 13 can effectively and uniformly disperse the welding stress generated when the welding point 14 is welded, and the damage to the welding portion 11 caused by the local stress concentration is avoided.

Further, the convex structure 13 is located in the middle of the welding portion 11, so as to further ensure that the welding stress is evenly distributed in the welding portion 11, and avoid local stress concentration.

The welded structure is configured in an axisymmetrical shape, and its axis of symmetry intersects the central axis of the cylinder and/or flange assembly perpendicularly, in this embodiment the axis of symmetry of the welded structure intersects the central axis of the upper flange 1 perpendicularly, and the weld point 14 is located on the axis of symmetry of the welded structure.

As shown in fig. 3, the thickness of the welding portion 11 is D, and the maximum thickness of the portion of the welding portion 11 where the protruding structure 13 is located is D, wherein D is greater than or equal to 3mm and less than or equal to 10 mm; d is more than or equal to 5mm and less than or equal to 15 mm; D-D is larger than or equal to 2mm, and the thickness of the welding part 11 of the welding structure is limited within a specified range, so that the welding strength is improved, the reliability of the compressor is enhanced, and meanwhile, the welding deformation and the influence of the welding deformation on the performance, noise and vibration of the compressor are greatly weakened.

Preferably, the number of the welding structures is at least three, and the welding structures are evenly distributed along the circumferential direction of the upper flange 1, in this embodiment, the number of the welding structures is three in the circumferential direction of the upper flange 1, and in other embodiments, four welding structures or more than four welding structures may be provided.

Preferably, the upper flange 1 is further provided with an axial through hole 15, the axial through hole 15 is arranged between two adjacent welding structures, the arrangement of the axial through hole 15 can reduce the weight of the upper flange 1 and the whole pump body, further, the axial through hole 15 is an arc-shaped hole, the axial through hole and the partition part 12 of the welding structure are located on the same circumference, and the width of the axial through hole 15 in the radial direction of the upper flange 1 is the same as the width of the partition part 12.

The welding structure can also be arranged on the cylinder in the same way and structure as the welding structure arranged on the upper flange 1, that is, the welding structure comprises a welding part 11 and a partition part 12, a convex structure 13 is arranged on the partition part 12, and a welding point is arranged at a position corresponding to the convex structure 13.

The invention also provides a compressor pump body assembly which comprises the compressor pump body structure, a crankshaft, a roller and a sliding vane, wherein the pump body structure comprises an air cylinder, an upper flange and a lower flange, the upper flange and the lower flange are arranged at two ends of the air cylinder, an air outlet is formed in the upper flange, and an air outlet valve plate is arranged at the air outlet. The inner wall of the cylinder is provided with a sliding sheet groove communicated with the inner cavity, and the sliding sheet is slidably arranged in the sliding sheet groove. The roller is connected with the crankshaft and arranged in the cylinder, and the crankshaft drives the roller to rotate in the cylinder.

The high-pressure cavity volume is reduced to a certain degree, when the gas pressure in the compression cavity reaches or exceeds the backpressure borne by the valve block on the upper flange, the valve block is opened, and the gas in the compression cavity is discharged out of the cavity body through the exhaust port of the upper flange.

According to the invention, the welding structure is arranged on the compressor body structure, so that the influence of welding on the matching precision of all parts of the pump body assembly can be reduced, and the operation stability and reliability of the pump body assembly are better.

The invention also provides a compressor, which comprises a shell and the compressor pump body assembly, wherein the welding structure of the compressor pump body structure is welded with the inner wall of the shell. Specifically, the case includes a main body portion, an upper cover assembly and a lower cover assembly that cover both ends of the main body portion. The compression pump body is arranged in the main body part and is welded and fixed with the inner wall of the main body part through the cylinder or the flange assembly.

The motor is arranged in the shell and is in driving connection with the crankshaft and used for driving the crankshaft to rotate, the exhaust port of the upper flange is communicated with the inner cavity of the shell and discharges high-pressure gas to the inner cavity of the shell, the upper cover assembly comprises a cover body and an exhaust pipe, the exhaust pipe is communicated with the inner cavity of the shell, and the high-pressure gas discharged by the pump body is discharged through the exhaust pipe.

The main body part is provided with an air suction port which is communicated with a low-pressure cavity in the cylinder, and the air suction port is communicated with a liquid distributor outside the shell, so that gas sucked by the low-pressure cavity is subjected to gas-liquid separation through the liquid distributor, and liquid suction is avoided.

Preferably, the compressor may be a single cylinder, a double cylinder, a single stage, a double stage, and the like all of rolling rotor type compressors having similar structures, or a rotary fluid machine having similar structures, such as a sliding vane type compressor, a sliding vane type expander, and the like.

According to the invention, the welding structure is arranged on the compressor pump body structure, and welding operation is carried out at the fixed position, so that welding stress, deformation caused by the welding stress and the like can be absorbed through the welding structure, and the influence on the assembly precision of other parts is avoided. Therefore, on the premise of ensuring the welding strength of the compressor, the compressor has a better stress homogenization effect, the structural deformation of a flange (or a cylinder) caused by welding is effectively improved, the risks of bearing abrasion, pump body leakage and the like caused by welding deformation are reduced, the energy efficiency is improved, the vibration noise of the compressor is optimized, and the reliability and the service life of the whole compressor are improved.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.