CN1759246A - Cylinder supporting structure of reciprocating compressor - Google Patents

Cylinder supporting structure of reciprocating compressor Download PDF

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Publication number
CN1759246A
CN1759246A CN 200480006621 CN200480006621A CN1759246A CN 1759246 A CN1759246 A CN 1759246A CN 200480006621 CN200480006621 CN 200480006621 CN 200480006621 A CN200480006621 A CN 200480006621A CN 1759246 A CN1759246 A CN 1759246A
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CN
China
Prior art keywords
cylinder
frame
patchhole
axially mounting
support
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Granted
Application number
CN 200480006621
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Chinese (zh)
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CN100416098C (en
Inventor
安相昱
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LG Electronics Inc
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LG Electronics Inc
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Publication of CN1759246A publication Critical patent/CN1759246A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1045—Cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

In a cylinder supporting structure of a reciprocating compressor for combining a cylinder compressing gas with a frame with a fastening means, by inclduing a bridging portion formed in the cylinder; an axial support extende-projected from the inner circumference of the cylinder insertion hole of the frame to support the cylinder inte length direction by being suuported by the ridging portion of the cylinder; and a radial support extended-projected from the inner circumference of the cylinder insertion hole of the frame to support the cylinder in the circumferentional direction by being contacted-supported by the outer surface of the cylinder, it is posible to prevent deformation of the cylinder and facilitate assembly operation.

Description

The cylinder supporting structure of reciprocal compressor
Technical field
The present invention relates to a kind of reciprocal compressor, the present invention relates more particularly to a kind of cylinder supporting structure of reciprocal compressor, it can promote the assembly operation of the cylinder combined with frame, and can prevent in cylinder and frame and cover thereon discharge cap fixed combination cylinder deformation together the time.
Background technique
Usually, compressor is a kinetic energy with transformation of electrical energy, then, utilizes the kinetic energy compresses refrigerant.Compressor is the core, and according to the fluid compression engine structure, compressor can be classified as: rotary compressor, scroll compressor and reciprocal compressor etc.
Fig. 1 is the sectional view that reciprocal compressor is shown.As shown in Figure 1, reciprocal compressor comprises: shell 100, and it has sucking pipe 110 and outlet pipe 120; Rack unit 200, it is set in the shell 100; Drive motor 300, it is installed on the rack unit 200, to produce linear back and forth driving force; Compression unit 400, it is used for coming pressurized gas by the driving force that receives drive motor 300; And resonant spring unit 500, it is used to make the driving force resonance of drive motor 300.
Rack unit 200 comprises: forebay 210, and it is used to hold compression unit 400; Intermediate stand 220, itself and forebay 210 are combined; And rear bay 230, it is used for intermediate stand 300 fixed drive motors 300.
Drive motor 300 comprises: outer stator 310, and it is fixed between intermediate stand 220 and the rear bay 230; Internal stator 320, it is inserted into outer stator 310, and combines regularly with rear bay 230; Mover (mover) 330, it is movably inserted between outer stator 310 and the internal stator 320; And coil 340, itself and outer stator 310 are combined.Mover 330 comprises magnet 331 and is used to support the magnet frame 332 of magnet 331.
Compression unit 400 comprises: cylinder 410, and itself and forebay 210 are combined regularly; Piston 420, one end movably insert the inner space (P) of cylinder 400, and its other end and mover 330 are combined regularly; Discharge cap 430, it is installed in the side of forebay 210, to cover the inner space (P) of cylinder; Expulsion valve 440, it is set on the discharge cap 430, with the inner space (P) of opening/closing cylinder; Discharge spring 450, it is set on the discharge cap 430, is used to support expulsion valve 440; And suction valve 460, the end that it is installed in piston 420 is used to control the flow of the freezing mixture in the inner space (P) that sucks cylinder.
Reference character 510 is spring-loadeds, the 520th, and front coil spring, the 530th, rear coil springs.
The following describes the running of reciprocal compressor.
When reciprocal compressor was powered, the electromagnetic interaction of drive motor 300 produced linear back and forth driving force, then, should the reciprocal driving force of linearity be delivered to piston 420 by mover 330.
By the pressure reduction that in the inner space of cylinder 420 (P), produces according to linear reciprocating motion, piston 420 carries out linear reciprocating motion in the inner space of cylinder 410 (P), operation suction valve 460 and expulsion valve 440, therefore, freezing mixture is sucked in the inner space (P) of cylinder 410, its compression is discharged then.By discharge cap 430 and with the discharge tube 120 of discharge cap 430 combination, the refrigerant of discharging is discharged to the outside.
Utilize resonant spring unit 500, the motion of mover 330 and piston 420 is resonated.
Simultaneously,, and improve compression performance, cylinder 410 and piston 420 accurately must be fitted together for the leakage that makes the compressed refrigerant between cylinder 410 and the piston 420 in the course of the work is reduced to minimumly.In addition, in the inner space of cylinder 410 (P), smoothly move back and forth in order to make piston 420, must be together with piston 410 and forebay 210 precise combination.
Fig. 2 is the decomposition section that the assembling process of cylinder is shown.
As shown in Figure 2, in the mmi machine frame 210, main body 211 punchings with definite shape form the cylinder patchhole 212 with certain internal diameter, on the inner circumferential of cylinder patchhole 212, form annular oil groove 213, and form mounting portion 214 with certain depth and external diameter at the inlet side of cylinder patchhole 212 with certain width and degree of depth.
In the cylinder patchhole 412 that cylinder 410 inserts on the forebay 210.Cylinder 410 comprises: cylinder part 411, and it has certain-length; And annular bridging portion 412, its exterior periphery from cylinder part 411 is protruded.In cylinder 410, cylinder part 411 is inserted in the cylinder patchhole 212 of main body 211, and bridging portion 412 inserts in the mounting portion 214.
The oil groove 213 that utilization forms on the inner circumferential of cylinder patchhole 212 and mounting portion 214 form the part of two relative protrusions, and one is preceding supporting portion 215, and another is a back supporting portion 216.Preceding supporting portion 215 is corresponding with the external diameter of the cylinder part 411 of cylinder 410 with the internal diameter of back supporting portion 216, and preceding supporting portion 215 contacts the exterior periphery of the cylinder part 411 of cylinder 410 with back supporting portion 216, therefore support cylinder 410.In addition, the internal diameter of mounting portion 214 is corresponding with the external diameter of the bridging portion 412 of cylinder 410.
Discharge cap 430 comprises: cap part 431, and it is a hat; And flange portion 432, its end bent from cap portion 431 stretches out.
In discharge cap 430, the side 413 of the end face 217 of the main body 211 of flange portion 432 contact forebaies and the bridging portion 412 of cylinder, utilization is fastened on a plurality of bolts 10 on the flange portion 432 of discharge cap, and the flange portion 432 and the end face of the main body 411 of forebay are combined.Therefore, discharge cap 430 and forebay 210 fixed combination are together.
Form the oil circuit 218. of oil inflow/outflow oil groove 213 on the mmi machine frame 210 respectively
In the inner space (P) of piston 420 movable insertion cylinders.
Reference character 433 is through holes, and reference character 219 is screw holes.
Yet in said structure, for discharge cap 430, forebay 210 and cylinder 410 are combined during fastening a plurality of bolt 10, the fastening force that bolt 10 is applied is passed to forebay 210.
The fastening force that is delivered to forebay 210 acts on the part of itself and bolt combination, therefore, may apply repulsion to preceding supporting portion 215, preceding supporting portion 215 is inboards of 10 fastening parts of bolt, and the torsion that clamping bolt 10 produces may act on preceding supporting portion 215.
Because repulsion and twisting force are in preceding supporting portion 215, as shown in Figure 3, in the preceding supporting portion 215 generation distortion of supporting cylinder 410, and deformation force is passed to the cylinder 410 that contacts with preceding supporting portion 215.Because power is passed to cylinder 410, may make cylinder 410 distortion, perhaps make the package size of cylinder produce error, therefore, parts may produce wearing and tearing, perhaps can not smooth and easyly move.
Summary of the invention
In order to address the above problem, the cylinder supporting structure that the purpose of this invention is to provide a kind of reciprocal compressor, it can promote the assembly operation of the cylinder combined with frame, and can prevent cylinder deformation when the discharge cap that will be used to cover cylinder and frame are combined.
To achieve these goals, comprise the frame with position cylinder patchhole thereon, the cylinder that inserts the cylinder patchhole of frame, because be activated the driving force of motor is done linear reciprocating motion in cylinder piston; Be used to cover in the reciprocal compressor of the securing means that the discharge cap and being used for of the side of cylinder combines discharge cap and frame, a kind of cylinder supporting structure of reciprocal compressor comprises: bridging portion, and it is formed on the cylinder; Axially mounting, it protrudes from inner circumferential of the cylinder patchhole of frame, supports and supports this cylinder at length direction by the bridging portion that utilizes cylinder; And radial support, its inner circumferential from the cylinder patchhole of frame is protruded, to support this cylinder by utilizing cylinder outer surface contact supporting at circumferencial direction.
Description of drawings
Fig. 1 is the sectional view that general reciprocal compressor is shown;
Fig. 2 is the decomposition section that the assembling of the cylinder that has reciprocal compressor now is shown;
Fig. 3 is the amplification sectional view that the cylinder supporting structure of reciprocal compressor is shown;
Figure 4 and 5 are respectively front cross-sectional view and the side cross-sectional views that the cylinder supporting structure of reciprocal compressor is shown;
Fig. 6 is the sectional view that illustrates according to the modification example of the axially mounting of the cylinder supporting structure of reciprocal compressor of the present invention; And
Fig. 7 is the part amplification sectional view that illustrates according to the cylinder supporting structure of reciprocal compressor of the present invention.
Embodiment
Now, with preferred embodiments of the invention will now be described with reference to the accompanying drawings.
Figure 4 and 5 are respectively front cross-sectional view and the side cross-sectional views that the cylinder supporting structure of reciprocal compressor is shown.Utilize same reference character to represent parts same as the prior art.
Shown in Figure 4 and 5, cylinder 410 inserts in the forebay 240 of rack unit 200, and piston 410 movably inserts in the inner space (P) of cylinder.In addition, discharge cap 430 covers a side of cylinder 410, and utilizes securing means, and it and forebay 240 are combined regularly.Securing means is a plurality of bolts.
In the mmi machine frame 240, on the main body 241 of definite shape, form the cylinder patchhole 242 of certain internal diameter.On the inner circumferential of cylinder patchhole 242, form ring shaped axial supporting 243 with certain width and height, on the inner circumferential of cylinder patchhole 242, form the annular radial supporting 244 of certain width and height apart from axially mounting 243 certain intervals, at this, the internal diameter of radial support 244 is greater than the internal diameter of axially mounting 243.
Axially mounting 243 is set, makes it compare more close discharge cap 430 with radial support 244.On the inner circumferential of cylinder patchhole 242, protrude and form axially mounting 243 and radial support 244.
Cylinder 410 comprises: cylinder unit 411, and it has certain-length, to hold piston 420 within it; And bridging portion 412, its exterior periphery from cylinder part 411 is protruded, to have certain width and height.This bridging portion 412 is annular.
The internal diameter of the cylinder patchhole 242 of forebay 240 is greater than the external diameter of the cylinder unit 411 of cylinder 410, the internal diameter of the radial support 244 of forebay 240 is identical with the external diameter of the cylinder unit 411 of cylinder 410, and the internal diameter of axially mounting 243 is less than the external diameter of cylinder unit 411.
In cylinder 410, cylinder unit 411 is inserted in the cylinder patchhole 240 of forebay 240, the side of the contacts side surfaces axially mounting 243 of bridging portion 412, and the exterior periphery of the inner circumferential of radial support 244 contact cylinder unit 411.The contacts side surfaces bridging portion 412 of the axially mounting 243 by making forebay 240, with axially mounting cylinder 410, the exterior periphery of internal surface (A) the contact cylinder unit 411 of the radial support 244 by making forebay 240 is with radial support cylinder 410.
The width of radial support 244 (a) is greater than the width (b) of axially mounting 243.
Be formed for oily circuit oil groove 245 in the space between axially mounting 243 and radial support 244.Between the side of the inlet of cylinder patchhole 242 and axially mounting 243, form mounting portion 247.The width of bridging portion 412 (c) (in the longitudinal direction) is equal to, or greater than the spacing between the side of the inlet end of cylinder patchhole 242 of forebay and axially mounting 243.The external diameter of bridging portion 412 is less than the internal diameter of cylinder patchhole 242.
Discharge cap 430 comprises the cap part 431 of hat and the flange portions 432 that protrude from 431 bendings of cap part.
On discharge cap 430, the side of the end face 246 of the main body of flange portion 432 contact forebaies and the bridging portion 412 of cylinder, a plurality of bolts 10 are passed on the flange portion 432 through hole 433 that forms, and are fastened to the screw hole 248 that forms on the end face 246 on the main body of mmi machine frame respectively.In view of the above, by a plurality of bolts 10 are fastened to discharge cap 430 and forebay 240, make discharge cap 430 and forebay 240 combine cylinder 410 pressurized being fixed on the discharge cap 430 regularly.
In the mmi machine frame 240, form the oil pipe 249 of oil by its inflow/outflow oil groove 245.
In discharge cap 430, be provided for the expulsion valve 440 and the discharge spring 450 that is used for yielding support expulsion valve 440 of the inner space (P) of opening/closing cylinder.
As shown in Figure 6, as a kind of modification of axially mounting 243, axially mounting 243 is included in and protrudes a plurality of projections (B) that form on the inwall of cylinder patchhole 242, so that have certain width, height and length at circumferencial direction.The diameter of a circle that the internal surface of a plurality of projections (B) forms is greater than the external diameter of cylinder 410.
Advantage according to the cylinder supporting structure of reciprocal compressor of the present invention will be described below.
According to the present invention, utilize the pressurization of discharge cap 430, axially and the cylinder 410 combined of radial support and forebay 210, therefore, assembled state is firm.More particularly, the bridging portion 412 of cylinder is axially contacting supporting axially mounting 243, and discharge cap 430 is exerted pressure at axial countercylinder 410, and the radial support 244 of forebay is in the exterior periphery of the cylinder part 411 of radial support cylinder, therefore, the assembled state of cylinder 410 is firm.
At fastening a plurality of bolts 10, cover 430 arranging, when forebay 240 and vapour 410 are combined, the fastening force of bolt 10 acts on the forebay 240.Acting on fastening force on the forebay 204 acts on the part of itself and bolt 10 combinations, in view of the above, repulsion acts on the axially mounting 243 of the inboard that is formed on this part (with bolt 10 combination), and the twisting force that produces during clamping bolt 10 is on axially mounting 243.Yet, because axially mounting 243 does not contact the cylinder part 411 of cylinder, but keep certain intervals, so repulsion and torsion only act on the axially mounting 243, and be not delivered to cylinder 410.Therefore,, can prevent that cylinder from deforming by fastening a plurality of bolts 10, by the fastening force that makes bolt 10 only act on by discharge cap 430 cylinder 410 axially, axially mounting 243 is at the bridging portion 412 of axially mounting cylinder, therefore, fixed cylinder 410.
In addition, according to the present invention, the internal diameter of the axially mounting 243 of forebay when cylinder 410 and forebay 240 are combined, can promote assembly operation greater than the external diameter of cylinder part 411.
Industrial applicability
As mentioned above, in the cylinder supporting structure according to reciprocating compressor of the present invention, In the time of will fitting together regularly for the cylinder of Compressed Gas and frame, become by preventing cylinder Shape, cylinder can keep the package size set, therefore, can prevent in operation each parts Come in contact and wear and tear, and, operate glibly. Therefore, prolonged all parts Life-span, and improved reliability.
In addition, by promoting the assembly operation of cylinder, can improve assembling productivity ratio, by protecting Hold fixedly assembled state, can prevent collision and noise between each parts.

Claims (10)

1. the cylinder supporting structure of a reciprocal compressor comprises in this reciprocal compressor: frame, and it has cylinder patchhole therein; Cylinder, it inserts the cylinder patchhole of frame; Piston, it passes through to receive the driving force of drive motor, and does linear reciprocating motion in cylinder; Discharge cap, it is used to cover a side of cylinder; And securing means, it is used for discharge cap and frame are combined; This cylinder supporting structure comprises:
Bridging portion, it is formed on the cylinder;
Axially mounting, its inner circumferential from the cylinder patchhole of frame is protruded, to support by the bridging portion by cylinder and to support this cylinder at length direction; And
Radial support, it protrudes from inner circumferential of the cylinder patchhole of frame, with by by cylinder outer surface contact supporting and support this cylinder at circumferencial direction.
2. structure as claimed in claim 1, wherein, this axially mounting is formed the annular with certain width and height, and the internal diameter of this axially mounting is greater than the external diameter of cylinder.
3. structure as claimed in claim 1, wherein, this radial support is formed the annular with certain width and height, and the internal diameter of this radial support equals the external diameter of cylinder.
4. structure as claimed in claim 1, wherein, this radial support width in the longitudinal direction is greater than axially mounting width in the longitudinal direction.
5. structure as claimed in claim 1, wherein, the bridging portion that is somebody's turn to do the cylinder on the exterior periphery of cylinder is formed the annular with certain width and height.
6. structure as claimed in claim 5, wherein, the external diameter of this bridging portion is less than the internal diameter of the cylinder patchhole of frame.
7. structure as claimed in claim 1 wherein, forms this axially mounting and radial support, makes to have certain intervals betwixt, and form the oil groove that oil flows therein between axially mounting and radial support.
8. structure as claimed in claim 1 wherein, is less than or equal to the width on the length direction of bridging portion of cylinder in the distance between the side of the entry end of the cylinder patchhole of this cylinder and axially mounting.
9. structure as claimed in claim 1, wherein, this cylinder is combined by utilizing securing means discharge cap and frame to be combined and pressurizeed with discharge cap.
10. structure as claimed in claim 1, wherein, this axially mounting is included on the inwall of cylinder patchhole of frame and protrudes a plurality of projections that form, and makes it have certain width, height and circumferential length, and the diameter of a circle that is formed by the internal surface of projection is greater than the external diameter of cylinder.
CNB2004800066215A 2003-03-11 2004-03-11 Cylinder supporting structure of reciprocating compressor Expired - Fee Related CN100416098C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020030015222 2003-03-11
KR20030015222A KR100511327B1 (en) 2003-03-11 2003-03-11 Structure for supporting cylinder of reciprocating compressor

Publications (2)

Publication Number Publication Date
CN1759246A true CN1759246A (en) 2006-04-12
CN100416098C CN100416098C (en) 2008-09-03

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CN (1) CN100416098C (en)
WO (1) WO2004081378A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889192A (en) * 2011-07-19 2013-01-23 中国科学院理化技术研究所 Linear compressor driven by using moving magnetic type linear oscillation motor
CN107339207A (en) * 2016-04-28 2017-11-10 Lg电子株式会社 Linearkompressor

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KR100690656B1 (en) * 2004-12-22 2007-03-09 엘지전자 주식회사 Reciprocating compressor
KR101328349B1 (en) * 2007-10-24 2013-11-11 엘지전자 주식회사 Linear compressor
CN104675675B (en) * 2013-11-26 2017-08-01 珠海格力节能环保制冷技术研究中心有限公司 Air cylinder support component
KR102240009B1 (en) 2014-07-21 2021-04-14 엘지전자 주식회사 Linear compressor and refrigerator including the same
KR101809347B1 (en) 2016-01-19 2017-12-14 엘지전자 주식회사 A linear compressor
KR102238347B1 (en) 2016-05-03 2021-04-09 엘지전자 주식회사 Linear compressor
KR20180083075A (en) 2017-01-12 2018-07-20 엘지전자 주식회사 Linear compressor

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Publication number Priority date Publication date Assignee Title
DE19922511B4 (en) * 1998-05-18 2004-07-08 Lg Electronics Inc. Oil circulation structure for a linear compressor
KR100332818B1 (en) * 2000-05-19 2002-04-19 구자홍 Structure for fixing stator of linear compressor
DE10196870B4 (en) * 2001-03-24 2008-10-23 Lg Electronics Inc. reciprocating
KR100396776B1 (en) * 2001-04-03 2003-09-03 엘지전자 주식회사 Cylinder head for compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102889192A (en) * 2011-07-19 2013-01-23 中国科学院理化技术研究所 Linear compressor driven by using moving magnetic type linear oscillation motor
CN102889192B (en) * 2011-07-19 2015-03-18 中国科学院理化技术研究所 Linear compressor driven by using moving magnetic type linear oscillation motor
CN107339207A (en) * 2016-04-28 2017-11-10 Lg电子株式会社 Linearkompressor
CN107339207B (en) * 2016-04-28 2019-06-07 Lg电子株式会社 Linearkompressor
US10711773B2 (en) 2016-04-28 2020-07-14 Lg Electronics Inc. Linear compressor

Also Published As

Publication number Publication date
WO2004081378A3 (en) 2004-12-16
CN100416098C (en) 2008-09-03
KR100511327B1 (en) 2005-08-31
WO2004081378A2 (en) 2004-09-23
KR20040080460A (en) 2004-09-20

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