WO2022121148A1 - 一种压缩机泵体以及压缩机 - Google Patents

一种压缩机泵体以及压缩机 Download PDF

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Publication number
WO2022121148A1
WO2022121148A1 PCT/CN2021/082522 CN2021082522W WO2022121148A1 WO 2022121148 A1 WO2022121148 A1 WO 2022121148A1 CN 2021082522 W CN2021082522 W CN 2021082522W WO 2022121148 A1 WO2022121148 A1 WO 2022121148A1
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WIPO (PCT)
Prior art keywords
bearing
side wall
compressor
oil suction
oil
Prior art date
Application number
PCT/CN2021/082522
Other languages
English (en)
French (fr)
Inventor
邓燕
龚沛
邝嘉杰
松本嘉文
Original Assignee
松下·万宝(广州)压缩机有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 松下·万宝(广州)压缩机有限公司 filed Critical 松下·万宝(广州)压缩机有限公司
Priority to JP2022522673A priority Critical patent/JP2023509809A/ja
Publication of WO2022121148A1 publication Critical patent/WO2022121148A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation

Definitions

  • the present invention relates to the technical field of compressors, in particular to a compressor pump body and a compressor.
  • a compressor in the prior art generally includes an upper cover 1 , a lower cover 2 , a casing 3 , a motor 4 fixed inside to provide rotational power, and a pump body 5 for compressing refrigerant.
  • the casing 3 is a hollow cylinder with openings at both ends, the upper cover 1 and the lower cover 2 are respectively covered on both ends, and the motor 4 and the pump body 5 are located in the casing 3 , the pump body 5 is driven by the motor 4 to compress the gas.
  • the pump body 5 includes an upper bearing 6 , a lower bearing 7 , a rotating crankshaft 8 , and a compression cylinder assembly 9 .
  • the compression cylinder assembly 9 is provided with a piston.
  • the rotating crankshaft 8 is connected between the motor 4 and the piston, and the motor 4 drives the rotating crankshaft 8 to rotate, so that the piston reciprocates in the compression cylinder assembly 9 .
  • the compression cylinder assembly 9 is located between the upper bearing 6 and the lower bearing 7, the upper bearing 6 is located above the motor 4, and the lower bearing 7 is located below the compression cylinder assembly 9, so The upper bearing 6 and the lower bearing 7 are respectively disposed at both ends of the rotating crankshaft 8 to support and position it.
  • a pump cover 100 is provided at the opening of the end of the lower bearing 7, and the inner wall of the pump cover 100 is closely attached to the outer wall of the lower bearing 7, In order to ensure that the lubricating oil does not leak from between the pump cover 100 and the lower bearing 7 when it flows upward into the pump body 5 .
  • the structure of the pump cover 100 is equivalent to the existing sound-absorbing cover.
  • the pump cover 100 covers the entire end face of the lower bearing 7 and is fixed with the end face of the lower bearing 7 by screws.
  • the side wall of the pump cover 100 is set as a side surface with a certain draft angle relative to the bottom surface thereof, so that the pump cover 100 is formed along the Projected on the axis of the cover 100, the inner cross section of the pump cover 100 gradually decreases from the cover opening to the bottom surface. Therefore, when the pump cover 100 and the end face of the lower bearing 7 are fitted and fixed with the above-mentioned screw, due to tolerances, if the depth of the screw into the end face of the lower bearing 7 is too small, the lower bearing 7 Not in contact with the pump cover 100 , there is a gap between the pump cover 100 and the lower bearing 7 , resulting in insufficient sealing.
  • the pump cover 100 covering the entire end face of the lower bearing 7 has little practical effect, and its structure is complex, resulting in waste of materials and increased processing procedures, affecting production efficiency and production. cost.
  • the purpose of the present invention is to provide a compressor pump body, which has the advantages of simple structure, high structural strength, low processing difficulty and low production cost.
  • a compressor pump body characterized in that it comprises a first bearing, a second bearing, a cylinder assembly, a piston, a crankshaft and a pump oil cover;
  • the first bearing, the cylinder assembly, and the second bearing are sequentially detachably fixed and enclosed into an independent refrigerant compression work space; the piston is movably arranged in the refrigerant compression work space; the crankshaft is movable through the space.
  • the inner hole of the first bearing and the inner hole of the second bearing can drive the piston to reciprocate and complete the refrigerant compression work; the crankshaft is provided with a crankshaft pump oil hole along the axial direction;
  • the oil pump cover includes a cover body and an oil suction pipe; the cover body has a hollow structure and is provided with openings at both ends, and its inner surface is provided with bumps; the cover body cover is arranged outside one end of the second bearing, and The protrusion is engaged with the second bearing; the oil suction pipe penetrates through the cover body through the opening of the cover body, and communicates with the crankshaft pump oil hole.
  • the compressor pump body through the structural design of the pump oil cover, a plurality of bumps are arranged in the cover body, and the bumps form an interference fit with the outer diameter of the second bearing.
  • the technical scheme of the embodiment of the present invention utilizes interference fit to realize the snap-fit and fixation, the fixing stability is good, and the assembly operation can be completed by manual pressing, the disassembly and assembly operations are convenient, and the assembly efficiency is effectively improved;
  • the setting of the pump oil cover avoids the problem of excessive stress at the local position of the pump oil cover after installation with bolts, thereby causing rupture, the overall structural strength is high, and the service life is effectively prolonged;
  • the technical solution of the embodiment of the present invention is In order to use the bumps to form an interference fit with the outer circumferential surface of the second bearing, it avoids the high requirement of machining accuracy caused by the interference fit, which greatly increases the processing difficulty, prolongs the processing cycle, and affects the efficiency and processing cost. The problem.
  • the cover body includes a first side wall, a second side wall and a connecting portion, the first side wall is arranged above the second side wall, and the first side wall and the second side wall Connected by the connecting part; the bump is arranged on the inner surface of the second side wall, and the second side wall is covered on the outer side of one end of the second bearing.
  • the laminated first and second side walls facilitate installation.
  • the oil suction pipe has a three-section structure, which includes a first pipe section away from the cover body, the extension direction of the first pipe section is parallel to the axial direction of the crankshaft, and the end is close to the cylinder assembly , this setting enables the compressor pump body to be used in a horizontal compressor to ensure the length of the outlet end of the oil suction pipe immersed in the oil pool, and in the horizontal compressor, the liquid in the oil pool is prone to appear larger.
  • the three-section structure of the oil suction pipe can ensure that the lubricating oil can be smoothly supplied to the various frictional positions in the pump body through the oil suction pipe for lubrication when the liquid level fluctuates greatly, so as to avoid wear and tear. .
  • the first bearing includes a first bearing handle and a first bearing flange, the first bearing flange is annularly arranged on the outer side of one end of the first bearing handle, and is located close to the cylinder an assembly; a first oil suction hole with an axis parallel to the axis of the crankshaft is formed through the first bearing flange; the cylinder assembly includes a cylinder body, and a position of the cylinder body corresponding to the first oil suction hole is formed through the first oil suction hole The second oil suction hole; the end opening of the first pipe section corresponds to the position of the second oil suction hole, and is communicated with the second oil suction hole and the first oil suction hole in sequence.
  • the first oil suction hole and the second oil suction hole are arranged to facilitate the return of lubricating oil to the oil pool, and the first oil suction hole, the second oil suction hole and the opening of the end of the first pipe section correspond to The arrangement can facilitate the returning lubricating oil from the oil suction pipe to return to each matching contact part of the pump body, so as to realize the lubricating effect.
  • the second bearing includes a second bearing handle and a second bearing flange, the second bearing flange is annularly arranged on the outer side of one end of the second bearing handle and is close to the cylinder body;
  • the convex point on the inner side of the second cylindrical structure forms an interference fit with the outer circular surface of the second bearing shank.
  • the number of the protruding points is at least 3, which are uniformly arranged on the inner side of the second side wall along the circumferential direction to ensure the stability of the snap-fit.
  • the interference fit between the protruding point and the outer circumferential surface of the second bearing shank is 0.02-0.5 mm, which not only ensures the stability of the clamping and fixing, but also ensures the convenience of disassembly and assembly operations.
  • the connecting portion has a circular structure, the first side wall encloses a first cylindrical structure, and the second side wall encloses a second cylindrical structure; the axis of the connecting portion is connected to the first cylindrical structure.
  • the axes of the cylindrical structure and the second cylindrical structure coincide with each other, and the structure of the connecting portion is simple, which is convenient for processing.
  • the inner surface of the connecting portion facing the second side wall abuts against the second bearing end surface and forms an annular contact surface.
  • the inner side surface of the second cylindrical structure abuts against the end surface of the second bearing to better prevent the leakage of the upwardly flowing lubricating oil.
  • the cross-sectional area of the side of the second side wall close to the connection portion is smaller than the cross-sectional area of the side away from the connection portion, so as to facilitate installation.
  • the compressor pump body of the embodiment of the present invention through the structural design of the pump oil cover, a plurality of bumps are arranged in the second cylindrical structure, and the bumps are formed with the outer diameter of the second bearing. Win cooperation.
  • the technical solution of the embodiment of the present invention utilizes interference fit to realize the clamping and fixing, the fixing stability is good, and the assembly operation can be completed by manual knocking, the disassembly and assembly operation is convenient, and the assembly efficiency is effectively improved;
  • the setting of the connection avoids the problem of excessive stress on the local position of the pump oil cover after installation with bolts, thereby causing rupture, the overall structural strength is high, and the service life is effectively extended;
  • the technology of the embodiment of the present invention is The solution is to use the bump to form an interference fit with the outer diameter of the second bearing shank, and in a preferred embodiment, the arrangement of the bump is further limited to ensure the stability of the clamping and fixing, and effectively It avoids the high requirements on machining accuracy caused by the interference fit between the second cylindrical structure as a
  • the structures of the oil suction pipe, the first bearing and the cylinder body are further limited, which can be applied to horizontal compressors, and can also smoothly absorb oil through the oil suction when the liquid level fluctuates greatly.
  • the pipes are supplied to the various friction-contacting positions in the pump body for lubrication, so as to ensure the lubrication effect and avoid wear.
  • an embodiment of the present invention also provides a compressor
  • the compressor pump body includes a first bearing, a second bearing, a cylinder assembly, a piston, a crankshaft and a pump oil cover;
  • the first bearing, the cylinder assembly, and the second bearing are sequentially detachably fixed and enclosed into an independent refrigerant compression work space; the piston is movably arranged in the refrigerant compression work space; the crankshaft is movable through the space.
  • the inner hole of the first bearing and the inner hole of the second bearing can drive the piston to reciprocate and complete the refrigerant compression work; the crankshaft is provided with a crankshaft pump oil hole along the axial direction;
  • the oil pump cover includes a cover body and an oil suction pipe; the cover body has a hollow structure and is provided with openings at both ends, and its inner surface is provided with bumps; the cover body cover is arranged outside one end of the second bearing, and The second bearing is engaged with the convex point; one end of the oil suction pipe penetrates the cover body through the opening of the cover body, and is communicated with the crankshaft pump oil hole, and the other end is connected with the oil pool Connected.
  • the compressor of the present invention has the advantages of simple structure, reasonable processing procedure design, high processing and assembling efficiency, good lubricating effect during operation, less structural damage due to dry friction, and long service life.
  • the cover body includes a first side wall, a second side wall and a connecting portion, the first side wall is arranged above the second side wall, and the first side wall and the second side wall pass through the The connecting portion is connected; the bump is arranged on the inner surface of the second side wall, and the second side wall is covered on the outer side of one end of the second bearing.
  • the oil suction pipe has a three-section structure, which includes a first pipe section away from the cover body, the extension direction of the first pipe section is parallel to the axial direction of the crankshaft, and its end is close to the cylinder Component settings.
  • the first bearing includes a first bearing shank and a first bearing flange, the first bearing flange is annularly arranged on the outer side of one end of the first bearing shank, and the first bearing method
  • the flange is located on the side close to the cylinder assembly;
  • the first bearing flange is provided with a first oil suction hole whose axis is parallel to the axis of the crankshaft;
  • the cylinder assembly includes a cylinder body, and the cylinder body corresponds to the first oil suction hole.
  • a second oil suction hole runs through the position of an oil suction hole;
  • the end opening of the first pipe section corresponds to the position of the second oil suction hole, and is connected with the second oil suction hole and the first oil suction hole in sequence Pass.
  • the second bearing includes a second bearing handle and a second bearing flange, the second bearing flange is annularly arranged on the outer side of one end of the second bearing handle; the second side wall The inner convex point of the second bearing shank forms an interference fit with the outer circular surface of the second bearing shank.
  • the number of the protruding points is at least 3, which are uniformly arranged on the inner side of the second cylindrical structure along the circumferential direction.
  • the interference fit between the protruding point and the outer circumferential surface of the second bearing shank is 0.02-0.5 mm.
  • the connecting portion has a ring-shaped structure, and the axis of the connecting portion coincides with the axes of the first cylindrical structure and the second cylindrical structure.
  • the inner surface of the connecting portion facing the second side wall abuts against the second bearing end surface and forms an annular contact surface.
  • the cross-sectional area of the side of the second side wall close to the connection portion is smaller than the cross-sectional area of the side away from the connection portion.
  • FIG. 1 is a schematic diagram of the internal structure of a compressor in the prior art
  • FIG. 2 is a schematic structural diagram of the compressor pump body according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic longitudinal section of the compressor pump body according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic diagram of the fixing structure of the pump oil cover and the second bearing according to Embodiment 1 of the present invention.
  • FIG. 5 is an exploded schematic diagram of the cover body, the oil suction pipe and the second bearing structure according to Embodiment 1 of the present invention
  • FIG. 6 is a schematic longitudinal cross-sectional view of the cover body according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic structural diagram of the compressor pump body according to Embodiment 2 of the present invention.
  • FIG. 8 is a schematic longitudinal section of the compressor pump body according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic diagram of the fixing structure of the pump oil cover and the second bearing according to Embodiment 2 of the present invention.
  • FIG. 10 is a schematic exploded view of the cover body, the oil suction pipe and the second bearing structure according to Embodiment 2 of the present invention.
  • FIG. 11 is a schematic diagram of the internal structure of the compressor according to Embodiment 3 of the present invention.
  • FIG. 12 is an enlarged view of A in FIG. 11 of the present invention.
  • FIG. 2 is a schematic structural diagram of the compressor pump body in Embodiment 1 of the present invention
  • FIG. 3 is a longitudinal cross-sectional schematic diagram of the compressor pump body in Embodiment 1 of the present invention.
  • Embodiment 1 of the present invention provides a compressor pump body, which is applied to a vertical compressor, and includes a first bearing 10 , a second bearing 20 , a cylinder assembly 30 , a piston 60 , a crankshaft 40 and a pump oil cover 50 .
  • the first bearing 10, the cylinder assembly 30, and the second bearing 20 are sequentially detachably fixed and enclosed into an independent refrigerant compression work space; the piston 60 is movably arranged in the refrigerant compression work space;
  • the crankshaft 40 moves through the inner hole of the first bearing 10 and the inner hole of the second bearing 20, and can drive the piston 60 to reciprocate and complete the refrigerant compression work;
  • the crankshaft 40 is axially provided with Crankshaft pump oil hole 42 .
  • FIG. 4 is a schematic diagram of the fixing structure of the pump oil cover and the second bearing according to the first embodiment of the present invention
  • FIG. 5 is the cover body, the oil suction pipe and the The exploded schematic diagram of the second bearing structure
  • FIG. 6 is a schematic longitudinal cross-sectional view of the cover body according to Embodiment 1 of the present invention.
  • the pump oil cover 50 is detachably clamped and fixed to the outside of the second bearing 20 , and includes a cover body 52 and an oil suction pipe 54 ; the cover body 52 has a hollow structure and has openings at both ends.
  • the second bearing 20 is located at an opening of one end of the cover body 52 , and the cover body 52 includes a second side wall that is engaged with the second bearing 20 and extends away from the second bearing 20 . 524 .
  • the first side wall 522 and the connecting portion 526 whose one end face faces the second bearing 20 are stacked on the end of the second side wall 524 away from the second bearing 20 , along the second bearing 20 .
  • the axial projection of the connecting portion 526 is connected between the first side wall 522 and the second side wall 524, and the cross-sectional area enclosed by the first side wall 522 is smaller than that of the second side wall
  • the cross-sectional area enclosed by the wall 524 , the second bearing 20 is located on the connecting portion 526 .
  • the first side wall 522 encloses a first cylindrical structure
  • the second side wall 524 encloses a second cylindrical structure
  • the axes of the first cylindrical structure and the second cylindrical structure coincide
  • the outer diameter of the second cylindrical structure is not less than the inner diameter of the first cylindrical structure
  • the connecting portion 526 is connected between the opposite end surfaces of the first cylindrical structure and the second cylindrical structure, the The first cylindrical structure is in fixed communication with the second cylindrical structure through the connecting portion 526 .
  • the second side wall 524 and the connecting portion 526 are not perpendicular to each other, and are projected along the axial direction of the second bearing, and the second side wall 524 is close to the connecting portion 526
  • the cross-sectional area enclosed by the side is smaller than the cross-sectional area enclosed by the side away from the connecting portion 526 .
  • the cross-sectional diameter of the second cylindrical structure gradually increases.
  • the inner surface of the second side wall 524 is protruded with a plurality of bumps (not shown), and the bumps and the outer circumferential surface of the second bearing 20 form an interference fit.
  • the connecting portion 526 abuts the end surface of the second bearing 20 toward the inner side surface of the second side wall 524 and forms an annular contact surface.
  • One end of the oil suction pipe 54 is fixedly penetrated through the cover body 52 and communicated with the oil hole 42 of the crankshaft pump, and the other end is communicated with the oil pool for storing lubricating oil.
  • Embodiment 1 of the present invention through the structural design of the pump oil cover, several bumps are arranged in the second side wall 524, and the bumps are connected to the outside of the second bearing. An interference fit is formed between the circumferential surfaces.
  • the technical solution of Embodiment 1 of the present invention utilizes interference fit to realize the snap-fit and fixation. While the fixation stability is good, the assembly operation can be completed by manual pressing, the disassembly and assembly operations are convenient, and the assembly efficiency is effectively improved;
  • the connecting structure ensures the sealing between the pump oil cover and the second bearing, and at the same time facilitates the positioning between the pump oil cover and the second bearing, and prevents the second bearing from being pressed against the second bearing.
  • the technical solution of the first embodiment of the present invention utilizes the bumps and the second bearing by using the bumps and the second bearing.
  • the outer circumferential surface forms an interference fit, which avoids the higher machining accuracy requirements caused by the interference fit between the second side wall as a whole and the second bearing, which greatly increases the processing difficulty, prolongs the processing cycle, and affects the efficiency. and processing costs.
  • FIG. 7 is a schematic structural diagram of the compressor pump body according to Embodiment 2 of the present invention
  • FIG. 8 is a longitudinal cross-sectional schematic diagram of the compressor pump body according to Embodiment 2 of the present invention
  • FIG. 9 is an implementation of the present invention.
  • FIG. 10 is an exploded schematic diagram of the cover body, the oil suction pipe and the second bearing structure according to Example 2 of the present invention.
  • Embodiment 2 of the present invention provides a compressor pump body, which is different from Embodiment 1 in that it is applied to a horizontal compressor, and the compressor pump body is placed horizontally.
  • the oil suction pipe 54 has a three-section structure, which includes a first pipe section 542 away from the cover body 52 , and the extension direction of the first pipe section 542 is the same as that of the first pipe section 542 .
  • the axial direction of the crankshaft 40 is parallel, and its end is close to the cylinder assembly 30.
  • the oil suction pipe 54 has a three-stage structure to ensure that the lubricating oil can be smoothly supplied to the oil through the oil suction pipe 54 even when the liquid level fluctuates greatly.
  • Each friction-contacting position in the compressor pump body is lubricated to avoid wear.
  • the first bearing 10 includes a first bearing shank 12 and a first bearing flange 14 , the first bearing flange 14 is annularly disposed outside one end of the first bearing shank 12 , and The first bearing flange 14 is located on the side close to the cylinder assembly 30 .
  • a first oil suction hole 142 with an axis parallel to the axis of the crankshaft 40 is formed through the first bearing flange 14 .
  • the cylinder assembly 30 includes a cylinder body 32 , and a second oil suction hole 322 is formed through the cylinder body 32 corresponding to the position of the first oil suction hole 142 .
  • the opening at the end of the first pipe section 542 corresponds to the position of the second oil suction hole 322 and communicates with the second oil suction hole 322 and the first oil suction hole 142 in sequence.
  • the arrangement of the first oil suction hole 142 and the second oil suction hole 322 facilitates the return of lubricating oil to the oil pool, and the first oil suction hole 142 , the second oil suction hole 322 and the end of the oil suction pipe 54
  • the setting corresponding to the opening position of the upper part can facilitate the smooth suction of the backflow lubricating oil from the oil suction pipe 54 and supply it to each frictional contact and matching part to ensure the lubricating effect of the pump body.
  • the second bearing 20 includes a second bearing shank 22 and a second bearing flange 24.
  • the second bearing flange 24 is annularly disposed on the outer side of one end of the second bearing shank 22.
  • the second bearing flange 24 Located on the side close to the cylinder assembly 30 ; several bumps on the inner side of the second side wall 524 form an interference fit with the outer circumferential surface of the second bearing shank 22 .
  • the number of the bumps is at least three, in this embodiment, the number is three, and the bumps are uniformly arranged on the second cylindrical structure 524 along the circumferential direction of the second side wall
  • the number of the convex points can be more.
  • the interference fit between the protruding point and the outer circumferential surface of the second bearing shank portion 22 is 0.02-0.5 mm, which not only ensures the stability of the clamping and fixing, but also ensures the convenience of disassembly and assembly operations.
  • the connecting portion 526 has a ring-shaped structure, and its axis coincides with the axes of the first side wall 522 and the second side wall 524.
  • the connecting portion 526 has a simple structure, which is convenient for the cover Body 52 is processed.
  • the technical solution of the embodiment of the present invention utilizes interference fit to realize the clamping and fixing, the fixing stability is good, and the assembly operation can be completed by manual knocking, the disassembly and assembly operation is convenient, and the assembly efficiency is effectively improved;
  • the connection arrangement avoids the problem that the pump oil cover 50 is subject to excessive stress at the local position after installation with bolts, thereby causing the problem of rupture, the overall structural strength is high, and the service life is effectively prolonged; in addition, the embodiment of the present invention
  • the technical solution is to use the bumps to form an interference fit with the outer circumferential surface of the second bearing shank 22, and in the preferred embodiment, the arrangement of the bumps is further limited to ensure the stability of the clamping and fixing , and effectively avoid the problem that the second side wall 524 as a whole and the second bearing shank 22 form an interference fit with high processing accuracy requirements, which greatly increases the processing difficulty, prolongs the processing cycle, and affects the efficiency and processing cost.
  • the structure of the oil suction pipe 54, the first bearing 10 and the cylinder body 32 is further limited, which can be applied to a horizontal compressor, and can also be used when the liquid level fluctuates greatly. It can be smoothly supplied through the oil suction pipe 54 to each contact friction position in the pump body for lubrication, so as to ensure the lubrication effect and avoid wear.
  • Embodiment 3 of the present invention provides a compressor, which includes a casing 3 with openings at both ends, an upper cover 1 covering the opening on one side of the casing 3 , a cover The lower cover 2 opened on the other side of the casing 3 and the motor 4 and the compressor pump body (not marked) described in Embodiment 1 or Embodiment 2 respectively located in the casing 3 .
  • the motor 4 drives the crankshaft 40 of the compressor pump body to rotate, thereby realizing the reciprocating motion of the piston 60 .
  • the pump oil cover 50 of the compressor pump body is located on the side close to the lower cover 2 , and the oil suction pipe 54 communicates with the oil pool located in the lower cover 2 .
  • Embodiment 3 of the present invention has a simple structure, a reasonable processing procedure design, high processing and assembling efficiency, and good lubrication effect during the working process, is not prone to structural damage due to dry friction, and has a long service life.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

一种压缩机泵体以及压缩机，压缩机泵体包括第一轴承（10）、第二轴承（20）、气缸组件（30）、活塞（60）、曲轴（40）以及泵油盖（50）；泵油盖（50）可拆卸式卡合固定于第二轴承（20）外，其包括盖体（52）以及吸油管（54）；盖体（52）包括第一圆柱结构以及第二圆柱结构；第二圆柱结构内侧表面凸起设置有若干个凸点，凸点与第二轴承（20）外径形成过盈配合；吸油管（54）一端与曲轴泵油孔（42）相连通。

Description

一种压缩机泵体以及压缩机 技术领域
本发明涉及压缩机技术领域，特别是涉及一种压缩机泵体以及压缩机。
背景技术
请参阅图1，现有技术中压缩机一般包括上盖1、下盖2、壳体3、固定在内部提供旋转动力的马达4和实现冷媒压缩的泵体5。所述壳体3为两端设有开口的中空筒体，所述上盖1、下盖2分别盖设在其两端，所述马达4与所述泵体5位于所述壳体3内，在所述马达4带动下所述泵体5进行气体压缩。所述泵体5包括上轴承6、下轴承7、转动曲轴8、压缩气缸组件9。所述压缩气缸组件9内设有活塞。所述转动曲轴8连接在所述马达4与所述活塞之间，所述马达4带动所述转动曲轴8转动，使得所述活塞在所述压缩气缸组件9内进行往复运动。所述压缩气缸组件9位于所述上轴承6与所述下轴承7之间，所述上轴承6位于靠近所述马达4的上方，所述下轴承7位于所述压缩气缸组件9下方，所述上轴承6与所述下轴承7分别设置在所述转动曲轴8的两端以对其进行支撑与定位。
压缩机工作时，由于往复运动容易带来零部件之间的磨损，因此需要经常对所述转动曲轴8、所述压缩气缸组件9、所述活塞等往复运动零部件添加润滑油。而压缩气体的过程中，在气油分离的作用或重力的作用下，润滑油排到所述压缩气缸组件9并积聚在所述下盖2的油池内，然后在压缩机运转过程中又重新被吸入到所述泵体5内，从而确保压缩机长期稳定的运行。另一方面，为防止气体从所述压缩气缸组件9泄漏，所述下轴承7端部开口处盖设有泵盖100，所述泵盖100的内壁与所述下轴承7外壁紧密贴合，以确保润滑油向上流入所述泵体5时不从所述泵盖100和所述下轴承7之间泄漏。现有技术中，所述泵盖100为与现行消音盖结构相当，所述泵盖100覆盖整个下轴承7端面，并通过螺丝与所述下轴承7端面配合固定。
但是在所述泵盖100的模具成型过程中，为更好地进行脱模，所述泵盖100的侧壁被设置为相对于其底面具有一定拔模斜度的侧面，使得沿所述泵盖100轴线投影，所述泵盖100的内横截面从其盖口指向其底面方向上逐渐变小。因此，采用上述通过螺丝使所述泵盖100与所述下轴承7端面配合固定安装方式时，由于存在公差，如果螺丝拧入所述下轴承7端面的深度过小的话，所述下轴承7与所述泵盖100不接触，所述泵盖100与所述下轴承7之间存在间隙而导致密封性不足。如果螺丝拧入所述下轴承7的深度过大的话，虽然所述下轴承7的端面顶住所述泵盖100部分倾斜的内侧壁面从而实现定位与密封，但是此时所述泵盖100与所述下轴承7处于过盈配合状态，如果继续拧动螺丝就会使得所述下轴承7端面顶住所述 泵盖100内侧壁面所产生的压力过而导致破裂等问题的出现。也就是说，使用螺钉安装的方式难以将所述泵盖100与所述下轴承7之间定位在一个既能保证密封又能防止损坏的合理位置，为安装带来一定的难度。同时对于单转子下轴承无排气孔的压缩机机种，所述泵盖100覆盖整个下轴承7端面实际作用不大，且其结构复杂，造成材料浪费以及增加加工工序，影响生产效率及生产成本。
发明内容
基于此，本发明的目的在于，提供一种压缩机泵体，其具有结构简单、结构强度高、加工难度低且生产成本低的优点。
一种压缩机泵体，其特征在于：包括第一轴承、第二轴承、气缸组件、活塞、曲轴以及泵油盖；
所述第一轴承与所述气缸组件、所述第二轴承依次可拆卸式固定并围合成独立的冷媒压缩工作空间；所述活塞活动设置于所述冷媒压缩工作空间；所述曲轴活动贯穿所述第一轴承的内孔以及所述第二轴承的内孔，并可驱动所述活塞往复活动并完成冷媒压缩工作；所述曲轴内沿轴向设有曲轴泵油孔；
所述油泵盖包括盖体以及吸油管；所述盖体呈中空结构且两端设有开口，其内侧表面设有凸点；所述盖体盖设在所述第二轴承的一端外侧，并通过所述凸点与所述第二轴承卡合；所述吸油管通过所述盖体的开口贯穿所述盖体，并与所述曲轴泵油孔相连通。
本发明实施例所述压缩机泵体，其通过对所述泵油盖的结构设计，在所述盖体内设置若干凸点，所述凸点与所述第二轴承外径形成过盈配合。本发明实施例的技术方案利用过盈配合实现卡合固定，固定稳定性良好的同时通过人手工按压即可完成组装操作，拆装操作便捷，有效提高组装效率；而且，通过过盈配合卡接的设置，避免了使用螺栓进行固定在安装后所述泵油盖局部位置受到应力过大，进而造成破裂的问题，整体结构强度较高，有效延长使用寿命；另外，本发明实施例的技术方案为利用所述凸点与所述第二轴承的外圆周面形成过盈配合，避免了过盈配合所导致的加工精度要求较高，大大增加了加工难度，延长加工周期，影响效率及加工成本的问题。
进一步地，所述盖体包括第一侧壁、第二侧壁和连接部，所述第一侧壁设置在第二侧壁的上方，且所述第一侧壁和所述第二侧壁通过所述连接部连接；所述凸点设置在所述第二侧壁的内表面，所述第二侧壁盖设在所述第二轴承的一端外侧。层叠的第一侧壁和第二侧壁便于安装。
进一步地，所述吸油管呈三段式结构，其包括远离所述盖体的第一管段，所述第一管段 的延伸方向与所述曲轴的轴向平行，且端部靠近所述气缸组件，此设置使得所述压缩机泵体应用于卧式压缩机中使能够确保所述吸油管的出口端浸没于油池中的长度，且在卧式压缩机中油池内的液体容易出现幅度较大的流动，所述吸油管呈三段式结构可以保证润滑油在液面出现大幅度波动时也能顺利经所述吸油管供给到所述泵体内各个接触摩擦的位置进行润滑，以避免出现磨损。
进一步地，所述第一轴承包括第一轴承柄部以及第一轴承法兰，所述第一轴承法兰呈环状设置于所述第一轴承柄部一端的外侧，且位于靠近所述气缸组件；所述第一轴承法兰贯穿开设有轴线与所述曲轴的轴线平行的第一吸油孔；所述气缸组件包括气缸本体，所述气缸本体对应所述第一吸油孔位置处贯穿开设有第二吸油孔；所述第一管段的端部开口与所述第二吸油孔的位置对应，并与所述第二吸油孔、所述第一吸油孔依次相连通。所述第一吸油孔和所述第二吸油孔的设置便于润滑油回流至所述油池，且所述第一吸油孔、所述第二吸油孔以及所述第一管段端部开口位置对应的设置，能够便于回流的润滑油从所述吸油管重新回到泵体的各个配合接触部位，实现润滑效果。
进一步地，所述第二轴承包括第二轴承柄部以及第二轴承法兰，所述第二轴承法兰呈环状设置于所述第二轴承柄部一端的外侧且靠近所述气缸本体；所述第二圆柱结构内侧的凸点与所述第二轴承柄部的外圆面形成过盈配合。
进一步地，所述凸点的数目至少为3，其均匀地沿周向设置于所述第二侧壁的内侧，以确保卡合固定的稳定性。
进一步地，所述凸点与所述第二轴承柄部外圆周面过盈配合的过盈量为0.02～0.5mm，在确保卡合固定稳定性的同时，保证拆装操作的便捷性。
进一步地，所述连接部呈圆环状结构，所述第一侧壁围成第一圆柱结构，所述第二侧壁围成第二圆柱结构；所述连接部的轴线与所述第一圆柱结构以及所述第二圆柱结构的轴线相互重合，所述连接部的结构简单，便于进行加工。
进一步地，所述连接部朝向所述第二侧壁的内侧面抵接所述第二轴承端面并形成一环状接触面。第二圆柱结构的内侧面抵接所述第二轴承端面以更好地防止向上流动的润滑油的泄漏。
进一步地，沿所述第二轴承的轴向投影，所述第二侧壁靠近所述连接部一侧的横截面面积小于其远离所述连接部一侧的横截面面积，以便于安装。
本发明实施例所述压缩机泵体，其通过对所述泵油盖的结构设计，在所述第二圆柱结构内设置若干凸点，所述凸点与所述第二轴承外径形成过盈配合。本发明实施例的技术方案利用过盈配合实现卡合固定，固定稳定性良好的同时通过人手工敲击即可完成组装操作，拆装 操作便捷，有效提高组装效率；而且，通过过盈配合卡接的设置，避免了使用螺栓进行固定在安装后所述泵油盖局部位置受到应力过大，进而造成破裂的问题，整体结构强度较高，有效延长使用寿命；另外，本发明实施例的技术方案为利用所述凸点与所述第二轴承柄部的外径形成过盈配合，并在优选实施例中对所述凸点的设置进行进一步限定，确保卡合固定的稳定性，且有效避免了所述第二圆柱结构整体与所述第二轴承柄部形成过盈配合所导致的加工精度要求较高，大大增加了加工难度，延长加工周期，影响效率及加工成本的问题；在进一步实施例中，还对所述吸油管、所述第一轴承以及所述气缸本体的结构进一步进行限定，可适用于卧式压缩机，在液面出现大幅度波动时也能顺利经所述吸油管供给到所述泵体内各个接触摩擦的位置进行润滑，保证润滑效果，以避免出现磨损。
另外，本发明实施例还提供一种压缩机，
包括压缩机泵体以及油池；所述压缩机泵体包括第一轴承、第二轴承、气缸组件、活塞、曲轴以及泵油盖；
所述第一轴承与所述气缸组件、所述第二轴承依次可拆卸式固定并围合成独立的冷媒压缩工作空间；所述活塞活动设置于所述冷媒压缩工作空间；所述曲轴活动贯穿所述第一轴承的内孔以及所述第二轴承的内孔，并可驱动所述活塞往复活动并完成冷媒压缩工作；所述曲轴内沿轴向设有曲轴泵油孔；
所述油泵盖包括盖体以及吸油管；所述盖体呈中空结构且两端设有开口，其内侧表面设有凸点；所述盖体盖设在所述第二轴承的一端外侧，并通过所述凸点与所述第二轴承卡合；所述吸油管一端通过所述盖体的开口贯穿所述盖体，并与所述曲轴泵油孔相连通，另一端与所述油池连通。
与现有技术相比，本发明的压缩机结构简单，加工工序设计合理，加工及组装效率高，且在工作过程中润滑效果好，不易因干摩擦而出现结构损坏，使用寿命长。
进一步地，所述盖体包括第一侧壁、第二侧壁和连接部，所述第一侧壁设置在第二侧壁的上方，且所述第一侧壁和第二侧壁通过所述连接部连接；所述凸点设置在所述第二侧壁的内表面，所述第二侧壁盖设在所述第二轴承的一端外侧。
进一步地，所述吸油管呈三段式结构，其包括远离所述盖体的第一管段，所述第一管段的延伸方向与所述曲轴的轴向平行，并其端部靠近所述气缸组件设置。
进一步地，所述第一轴承包括第一轴承柄部以及第一轴承法兰，所述第一轴承法兰呈环状设置于所述第一轴承柄部一端的外侧，所述第一轴承法兰位于靠近所述气缸组件一侧；所述第一轴承法兰贯穿开设有轴线与所述曲轴的轴线平行的第一吸油孔；所述气缸组件包括气缸本体，所述气缸本体对应所述第一吸油孔位置处贯穿开设有第二吸油孔；所述第一管段的 端部开口与所述第二吸油孔的位置对应，并与所述第二吸油孔、所述第一吸油孔依次相连通。
进一步地，所述第二轴承包括第二轴承柄部以及第二轴承法兰，所述第二轴承法兰呈环状设置于所述第二轴承柄部一端的外侧；所述第二侧壁的内侧的凸点与所述第二轴承柄部的外圆面形成过盈配合。
进一步地，所述凸点的数目至少为3，其均匀地沿周向设置于所述第二圆柱结构的内侧。
进一步地，所述凸点与所述第二轴承柄部外圆周面过盈配合的过盈量为0.02～0.5mm。
进一步地，所述连接部呈圆环状结构，其轴线与所述第一圆柱结构以及所述第二圆柱结构的轴线相互重合。
进一步地，所述连接部朝向所述第二侧壁的内侧面抵接所述第二轴承端面并形成一环状接触面。
进一步地，沿所述第二轴承的轴向投影，所述第二侧壁靠近所述连接部一侧的横截面面积小于其远离所述连接部一侧的横截面面积。
为了更好地理解和实施，下面结合附图详细说明本发明。
附图说明
图1为现有技术中压缩机内部结构示意图；
图2为本发明实施例1所述压缩机泵体结构示意图；
图3为本发明实施例1所述压缩机泵体的纵剖示意图；
图4为本发明实施例1所述泵油盖与所述第二轴承固定结构示意图；
图5为本发明实施例1所述盖体、所述吸油管以及所述第二轴承结构爆炸示意图；
图6为本发明实施例1所述盖体纵剖示意图；
图7为本发明实施例2所述压缩机泵体结构示意图；
图8为本发明实施例2所述压缩机泵体的纵剖示意图；
图9为本发明实施例2所述泵油盖与所述第二轴承固定结构示意图；
图10为本发明实施例2所述盖体、所述吸油管以及所述第二轴承结构爆炸示意；
图11为本发明实施例3所述压缩机内部结构示意图；
图12为本发明图11中的A放大图。
具体实施方式
在本发明新型的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指 示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
实施例1
请结合参照图2和图3，图2为本发明实施例1中所述压缩机泵体结构示意图，图3为本发明实施例1中所述压缩机泵体的纵剖示意图，如图所示，本发明实施例1提供了一种压缩机泵体，其应用于立式压缩机，其包括第一轴承10、第二轴承20、气缸组件30、活塞60、曲轴40以及泵油盖50。
所述第一轴承10与所述气缸组件30、所述第二轴承20依次可拆卸式固定并围合成独立的冷媒压缩工作空间；所述活塞60活动设置于所述冷媒压缩工作空间内；所述曲轴40活动贯穿所述第一轴承10的内孔以及所述第二轴承20的内孔，并可驱动所述活塞60往复活动并完成冷媒压缩工作；所述曲轴40内沿轴向设有曲轴泵油孔42。
请结合参照图4到图6，图4为本发明实施例1所述泵油盖与所述第二轴承固定结构示意图，图5为本发明实施例1所述盖体、所述吸油管以及所述第二轴承结构爆炸示意图，图6为本发明实施例1所述盖体纵剖示意图。如图所示，所述泵油盖50可拆卸式卡合固定于所述第二轴承20外，其包括盖体52以及吸油管54；所述盖体52呈中空结构且两端设有开口，所述第二轴承20位于所述盖体52的一端开口处，所述盖体52包括卡合在所述第二轴承20外且向远离所述第二轴承20方向延伸的第二侧壁524、层叠于所述第二侧壁524远离所述第二轴承20一侧端部的第一侧壁522以及一端端面朝向所述第二轴承20的连接部526，沿所述第二轴承20的轴向投影，所述连接部526连接在所述第一侧壁522与所述第二侧壁524之间，所述第一侧壁522所围成的横截面面积小于所述第二侧壁524所围成的横截面面积，所述第二轴承20位于所述连接部526上。在本实施例中，所述第一侧壁522围成第一圆柱结构，所述第二侧壁524围成第二圆柱结构，所述第一圆柱结构与所述第二圆柱结构轴线重合，且所述第二圆柱结构的外径不小于所述第一圆柱结构的内径，所述连接部526连接在所述第一圆柱结构与所述第二圆柱结构相对的两端面之间，所述第一圆柱结构与所述第二圆柱结构通过所述连接部526固定连通。作为一种可选方式，所述第二侧壁524与所述连接部526相互不垂直，且沿所述第二轴承的轴向投影，所述第二侧壁524靠近所述连接部526一侧所围成的横截面积小于其远离所述连接部526一侧所围成的横截面面积。进一步，沿所述第二轴承20的轴向并远离所述连接部526的方向上，所述第二圆柱结构的横截面直径逐渐增大。所述第二侧壁524内侧表面凸设有若干个凸点(图未示)，所述凸点与所述第二轴承20外圆周面之间形成过盈配合。作为一种可选方式，所述连接部526朝向所述第二侧壁524的内侧面抵 接所述第二轴承20端面并形成一环状接触面。吸油管54一端固定穿设于所述盖体52，并与曲轴泵油孔42相连通，另一端与用于存储润滑油的油池相连通。
本发明实施例1中所述压缩机泵体，其通过对所述泵油盖的结构设计，在所述第二侧壁524内设置若干凸点，所述凸点与所述第二轴承外圆周面之间形成过盈配合。本发明实施例1的技术方案利用过盈配合实现卡合固定，固定稳定性良好的同时通过人手工按压即可完成组装操作，拆装操作便捷，有效提高组装效率；而且，通过过盈配合卡接的结构，在保证所述泵油盖与所述第二轴承之间密封性的同时，便于所述泵油盖与所述第二轴承之间的定位，避免所述第二轴承压到所述泵油盖的内侧面而对其造成损坏进而造成破裂的问题，整体结构强度较高，有效延长使用寿命；另外，本发明实施例1的技术方案利用所述凸点与所述第二轴承外圆周面形成过盈配合，避免了为使所述第二侧壁整体与所述第二轴承形成过盈配合而导致的加工精度要求变高，大大增加了加工难度，延长加工周期，影响效率及加工成本的问题。
实施例2
请结合参照图7到10，图7为本发明实施例2所述压缩机泵体结构示意图，图8为本发明实施例2所述压缩机泵体的纵剖示意图，图9为本发明实施例2所述泵油盖与所述第二轴承固定结构示意图，图10为本发明实施例2所述盖体、所述吸油管以及所述第二轴承结构爆炸示意图。如图所示，本发明实施例2提供一种压缩机泵体，其与实施例1的区别在于：应用于卧式压缩机，所述压缩机泵体为卧式放置。作为一种可选实施方式，在本实施例中，所述吸油管54呈三段式结构，其包括远离所述盖体52的第一管段542，所述第一管段542的延伸方向与所述曲轴40的轴向平行，其端部靠近气缸组件30，此设置使得所述压缩机泵体应用于卧式压缩机中能够确保所述吸油管54的端口浸没于油池中的长度，且在卧式压缩机中油池内的液体容易出现幅度较大的流动，所述吸油管54呈三段式结构可以保证润滑油在液面出现大幅度波动时也能顺利经所述吸油管54供给到所述压缩机泵体内各个接触摩擦的位置进行润滑，以避免出现磨损。
具体地，所述第一轴承10包括第一轴承柄部12以及第一轴承法兰14，所述第一轴承法兰14呈环状设置于所述第一轴承柄部12一端的外侧，且所述第一轴承法兰14位于靠近所述气缸组件30的一侧。所述第一轴承法兰14贯穿开设有轴线与所述曲轴40轴线平行的第一吸油孔142。所述气缸组件30包括气缸本体32，所述气缸本体32对应所述第一吸油孔142位置处贯穿开设有第二吸油孔322。所述第一管段542端部的开口与所述第二吸油孔322的位置对应，并与所述第二吸油孔322、所述第一吸油孔142依次相连通。所述第一吸油孔142和所述第二吸油孔322的设置便于润滑油回流至所述油池，且所述第一吸油孔142、所述第 二吸油孔322以及所述吸油管54端部开口位置对应的设置，能够便于顺利从所述吸油管54吸入回流的润滑油，并供给至各摩擦接触配合部位，保证泵体的润滑效果。
所述第二轴承20包括第二轴承柄部22以及第二轴承法兰24，第二轴承法兰24呈环状设置于第二轴承柄部22一端的外侧，所述第二轴承法兰24位于靠近所述气缸组件30的一侧；所述第二侧壁524内侧的若干凸点与第二轴承柄部22的外圆周面形成过盈配合。
作为一种可选实施方式，所述凸点的数目至少为3个，在本实施例中数目为3个，并均匀地沿所述第二侧壁周向设置于所述第二圆柱结构524的内侧，以确保卡合固定的稳定性，在其他实施方式中，所述凸点的数目可以为更多。进一步地，所述凸点与第二轴承柄部22外圆周面过盈配合的过盈量为0.02～0.5mm，在确保卡合固定稳定性的同时，保证拆装操作的便捷性。
作为一种可选实施方式，所述连接部526呈圆环状结构，其轴线与第一侧壁522以及第二侧壁524的轴线重合，所述连接部526的结构简单，便于所述盖体52进行加工。
本发明实施例1和2所述压缩机泵体，其通过对所述泵油盖50的结构设计，在所述侧壁524内设置若干凸点，所述凸点与所述第二轴承20外圆周面形成过盈配合。本发明实施例的技术方案利用过盈配合实现卡合固定，固定稳定性良好的同时通过人手工敲击即可完成组装操作，拆装操作便捷，有效提高组装效率；而且，通过过盈配合卡接的设置，避免了使用螺栓进行固定在安装后所述泵油盖50局部位置受到应力过大，进而造成破裂的问题，整体结构强度较高，有效延长使用寿命；另外，本发明实施例的技术方案为利用所述凸点与所述第二轴承柄部22的外圆周面形成过盈配合，并在优选实施例中对所述凸点的设置进行进一步限定，确保卡合固定的稳定性，且有效避免了所述第二侧壁524整体与所述第二轴承柄部22形成过盈配合时加工精度要求较高，大大增加了加工难度，延长加工周期，影响效率及加工成本的问题；在进一步实施例中，还对所述吸油管54、所述第一轴承10以及所述气缸本体32的结构进一步进行限定，可适用于卧式压缩机，在液面出现大幅度波动时也能顺利经所述吸油管54供给到所述泵体内各个接触摩擦的位置进行润滑，保证润滑效果，以避免出现磨损。
实施例3
请结合参阅图11与图12，本发明实施例3提供一种压缩机，其包括两端设有开口的壳体3、盖合在所述壳体3一侧开口的上盖1、盖合在所述壳体3另一侧开口的下盖2以及分别位于所述壳体3内的马达4、实施例1或实施例2所述的压缩机泵体(未标注)。所述马达4带动所述压缩机泵体的曲轴40转动，从而实现所述活塞60的往复运动。所述压缩机泵体的泵油盖50位于靠近所述下盖2一侧，所述吸油管54与位于所述下盖2的油池连通。本发明 实施例3所述压缩机结构简单，加工工序设计合理，加工及组装效率高，且在工作过程中润滑效果好，不易因干摩擦而出现结构损坏，使用寿命长。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。

Claims (20)

  1. 一种压缩机泵体，其特征在于：包括第一轴承、第二轴承、气缸组件、活塞、曲轴以及泵油盖；
    所述第一轴承与所述气缸组件、所述第二轴承依次可拆卸式固定并围合成独立的冷媒压缩工作空间；所述活塞活动设置于所述冷媒压缩工作空间；所述曲轴活动贯穿所述第一轴承的内孔以及所述第二轴承的内孔，并可驱动所述活塞往复活动并完成冷媒压缩工作；所述曲轴内沿轴向设有曲轴泵油孔；
    所述油泵盖包括盖体以及吸油管；所述盖体呈中空结构且两端设有开口，其内侧表面设有凸点；所述盖体盖设在所述第二轴承的一端外侧，并通过所述凸点与所述第二轴承卡合；所述吸油管通过所述盖体的开口贯穿所述盖体，并与所述曲轴泵油孔相连通。
  2. 根据权利要求1所述的压缩机泵体，其特征在于：所述盖体包括第一侧壁、第二侧壁和连接部，所述第一侧壁设置在第二侧壁的上方，且所述第一侧壁和所述第二侧壁通过所述连接部连接；所述凸点设置在所述第二侧壁的内表面，所述第二侧壁盖设在所述第二轴承的一端外侧。
  3. 根据权利要求1所述的压缩机泵体，其特征在于：所述吸油管呈三段式结构，其包括远离所述盖体的第一管段，所述第一管段的延伸方向与所述曲轴的轴向平行且端部靠近所述气缸组件。
  4. 根据权利要求3所述的压缩机泵体，其特征在于：所述第一轴承包括第一轴承柄部以及第一轴承法兰，所述第一轴承法兰呈环状设置于所述第一轴承柄部一端的外侧且靠近所述气缸组件；所述第一轴承法兰贯穿开设有轴线与所述曲轴的轴线平行的第一吸油孔；所述气缸组件包括气缸本体，所述气缸本体对应所述第一吸油孔位置处贯穿开设有第二吸油孔；所述第一管段的端部开口与所述第二吸油孔的位置对应，并与所述第二吸油孔、所述第一吸油孔依次相连通。
  5. 根据权利要求1所述的压缩机泵体，其特征在于：所述第二轴承包括第二轴承柄部以及第二轴承法兰，所述第二轴承法兰呈环状设置于所述第二轴承柄部一端的外侧且靠近所述气缸本体；所述第二圆柱结构内侧的凸点与所述第二轴承柄部的外圆面形成过盈配合。
  6. 根据权利要求1所述的压缩机泵体，其特征在于：所述凸点的数目至少为3，其均匀地沿周向设置于所述第二侧壁的内侧。
  7. 根据权利要求6所述的压缩机泵体，其特征在于：所述凸点与所述第二轴承柄部外圆周面过盈配合的过盈量为0.02～0.5mm。
  8. 根据权利要求1所述的压缩机泵体，其特征在于：所述连接部呈圆环状结构，所述第一侧壁围成第一圆柱结构，所述第二侧壁围成第二圆柱结构；所述连接部的轴线与所述第一圆柱结构以及所述第二圆柱结构的轴线相互重合。
  9. 根据权利要求8所述的压缩机泵体，其特征在于：所述连接部朝向所述第二侧壁的内侧面抵接所述第二轴承端面并形成一环状接触面。
  10. 根据权利要求1所述的压缩机泵体，其特征在于：沿所述第二轴承的轴向投影，所述第二侧壁靠近所述连接部一侧的横截面面积小于其远离所述连接部一侧的横截面面积。
  11. 一种压缩机，其特征在于：包括压缩机泵体以及油池；所述压缩机泵体包括第一轴承、第二轴承、气缸组件、活塞、曲轴以及泵油盖；
    所述第一轴承与所述气缸组件、所述第二轴承依次可拆卸式固定并围合成独立的冷媒压缩工作空间；所述活塞活动设置于所述冷媒压缩工作空间；所述曲轴活动贯穿所述第一轴承的内孔以及所述第二轴承的内孔，并可驱动所述活塞往复活动并完成冷媒压缩工作；所述曲轴内沿轴向设有曲轴泵油孔；
    所述油泵盖包括盖体以及吸油管；所述盖体呈中空结构且两端设有开口，其内侧表面设有凸点；所述盖体盖设在所述第二轴承的一端外侧，并通过所述凸点与所述第二轴承卡合；所述吸油管一端通过所述盖体的开口贯穿所述盖体，并与所述曲轴泵油孔相连通，另一端与所述油池连通。
  12. 根据权利要求11所述的压缩机，其特征在于：所述盖体包括第一侧壁、第二侧壁和连接部，所述第一侧壁设置在第二侧壁的上方，且所述第一侧壁和第二侧壁通过所述连接部连接；所述凸点设置在所述第二侧壁的内表面，所述第二侧壁盖设在所述第二轴承的一端外侧。
  13. 根据权利要求11所述的压缩机，其特征在于：所述吸油管呈三段式结构，其包括远离所述盖体的第一管段，所述第一管段的延伸方向与所述曲轴的轴向平行且端部靠近所述气缸组件。
  14. 根据权利要求11所述的压缩机，其特征在于：所述第一轴承包括第一轴承柄部以及第一轴承法兰，所述第一轴承法兰呈环状设置于所述第一轴承柄部一端的外侧且靠近所述气缸组件；所述第一轴承法兰贯穿开设有轴线与所述曲轴的轴线平行的第一吸油孔；所述气缸组件包括气缸本体，所述气缸本体对应所述第一吸油孔位置处贯穿开设有第二吸油孔；所述第一管段的端部开口与所述第二吸油孔的位置对应，并与所述第二吸油孔、所述第一吸油孔依次相连通。
  15. 根据权利要求11所述的压缩机，其特征在于：所述第二轴承包括第二轴承柄部以及 第二轴承法兰，所述第二轴承法兰呈环状设置于所述第二轴承柄部一端的外侧且靠近所述气缸本体；所述第二圆柱结构内侧的凸点与所述第二轴承柄部的外圆面形成过盈配合。
  16. 根据权利要求12所述的压缩机，其特征在于：所述凸点的数目至少为3，其均匀地沿周向设置于所述第二侧壁的内侧。
  17. 根据权利要求16所述的压缩机，其特征在于：所述凸点与所述第二轴承柄部外圆周面过盈配合的过盈量为0.02～0.5mm。
  18. 根据权利要求12所述的压缩机，其特征在于：所述连接部呈圆环状结构，所述第一侧壁围成第一圆柱结构，所述第二侧壁围成第二圆柱结构；所述连接部的轴线与所述第一圆柱结构以及所述第二圆柱结构的轴线相互重合。
  19. 根据权利要求18所述的压缩机，其特征在于：所述连接部朝向所述第二侧壁的内侧面抵接所述第二轴承端面并形成一环状接触面。
  20. 根据权利要求19所述的压缩机，其特征在于：沿所述第二轴承的轴向投影，所述第二侧壁靠近所述连接部一侧的横截面面积小于其远离所述连接部一侧的横截面面积。
PCT/CN2021/082522 2020-12-10 2021-03-24 一种压缩机泵体以及压缩机 WO2022121148A1 (zh)

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JPH06129379A (ja) * 1992-10-20 1994-05-10 Matsushita Refrig Co Ltd ロータリ圧縮機
JP2011241778A (ja) * 2010-05-20 2011-12-01 Panasonic Corp ロータリー圧縮機
CN105156331A (zh) * 2015-07-08 2015-12-16 西安庆安制冷设备股份有限公司 一种卧式转子压缩机
CN208281144U (zh) * 2018-04-20 2018-12-25 松下·万宝(广州)压缩机有限公司 一种卧式压缩机

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JPS5865992A (ja) * 1981-10-15 1983-04-19 Toshiba Corp 横型ロ−タリコンプレツサ
JPH0281990A (ja) * 1988-09-19 1990-03-22 Matsushita Electric Ind Co Ltd 密閉型回転式圧縮機
JPH04143486A (ja) * 1990-10-04 1992-05-18 Matsushita Refrig Co Ltd 回転式圧縮機
JPH0861277A (ja) * 1994-08-22 1996-03-08 Toshiba Corp コンプレッサのクランクシャフト内給油機構

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JPH01170785A (ja) * 1987-12-25 1989-07-05 Sanyo Electric Co Ltd 回転式圧縮機
JPH06129379A (ja) * 1992-10-20 1994-05-10 Matsushita Refrig Co Ltd ロータリ圧縮機
JP2011241778A (ja) * 2010-05-20 2011-12-01 Panasonic Corp ロータリー圧縮機
CN105156331A (zh) * 2015-07-08 2015-12-16 西安庆安制冷设备股份有限公司 一种卧式转子压缩机
CN208281144U (zh) * 2018-04-20 2018-12-25 松下·万宝(广州)压缩机有限公司 一种卧式压缩机

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