KR101266741B1 - Scroll Compressor - Google Patents

Scroll Compressor Download PDF

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Publication number
KR101266741B1
KR101266741B1 KR1020110012110A KR20110012110A KR101266741B1 KR 101266741 B1 KR101266741 B1 KR 101266741B1 KR 1020110012110 A KR1020110012110 A KR 1020110012110A KR 20110012110 A KR20110012110 A KR 20110012110A KR 101266741 B1 KR101266741 B1 KR 101266741B1
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KR
South Korea
Prior art keywords
main bearing
bearing member
scroll
fixed scroll
welding
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KR1020110012110A
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Korean (ko)
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KR20120082793A (en
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마사히로 오노구찌
도시유끼 데라이
겐지 다께사와
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히타치 어플라이언스 가부시키가이샤
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    • 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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • 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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

Abstract

본 발명은 냉동 냉장 공조 시스템 등의 냉매 가스를 압축하는 스크롤 압축기로, 특히 차량 등의 이동체에 탑재되어 과대한 진동 가속도가 가해질 가능성이 있는 압축기에 있어서, 비용이나 성능을 악화시키지 않고, 외적으로 가해지는 진동에 대해, 압축 기구부의 축심의 어긋남을 방지하여 내진 강도를 향상시키는 것을 목적으로 한다.
축심을 맞춘 상태에서 볼트에 의해 체결되어 있는 주베어링 부재와 고정 스크롤의 외주부에 대해, 주베어링 부재의 외주의 밀폐 용기와 접촉하는 외주면보다 내측의 외주 절결부 등에서, 주베어링 부재와 고정 스크롤을 국소적으로 용접한다.BACKGROUND OF THE INVENTION Field of the Invention The present invention is a scroll compressor for compressing a refrigerant gas such as a refrigeration and air conditioning system, and particularly in a compressor mounted on a moving body such as a vehicle, which may be subjected to excessive vibration acceleration. The object of the present invention is to prevent the displacement of the shaft center of the compression mechanism portion against the vibration, and to improve the seismic strength.
The main bearing member and the fixed scroll are localized at the outer circumferential cutout portion inside the outer circumferential surface in contact with the sealed container of the outer circumference of the main bearing member and the outer circumferential portion of the fixed scroll, which are fastened by bolts in a state where the shaft is aligned. By welding.

Description

스크롤 압축기 {SCROLL COMPRESSOR}[0001] SCROLL COMPRESSOR [0002]

본 발명은 냉동 공조 기기 등에 사용되는 스크롤 압축기에 관한 것이다.The present invention relates to a scroll compressor for use in refrigeration and air conditioning equipment.

스크롤 압축기는 맞물리게 하여 압축 기구부를 구성하는 선회 스크롤과 고정 스크롤의 각 축심을 맞추어, 고정 스크롤과 주베어링부를 볼트에 의해 체결하는 것이 일반적으로 행해지고 있다. 압축 기구부의 고정 스크롤과 주베어링 부재의 체결 구조에 관해서는, 예를 들어 특허 문헌 1에 기재되어 있다. 특허 문헌 1에 따르면, 고압 냉매 사용 시의 압축 기구부의 누설을 방지하기 위해, 저열량 용접으로 고정 스크롤과 주베어링 부재를 체결하고 있다.It is common practice to fasten the fixed scroll and the main bearing part with bolts by aligning the pivots of the swing scroll and the fixed scroll constituting the compression mechanism by engaging the scroll compressor. Patent document 1 describes the fastening structure of the fixed scroll of the compression mechanism portion and the main bearing member. According to patent document 1, in order to prevent the leakage of the compression mechanism part at the time of using a high pressure refrigerant | coolant, the fixed scroll and the main bearing member are fastened by low calorie welding.

스크롤 압축기의 압축 기구부를 조립할 때에, 축의 편심부에 헐겁게 맞춘 선회 스크롤과 고정 스크롤의 축심을 맞추기 위해, 주베어링 부재에 대한 고정 스크롤의 위치를 조정하여 볼트에 의해 체결하고 있다. 상기 볼트의 체결력에 의해, 정치하여 운전하는 상태에 있어서는 압축 기구부의 축심은 유지되어 있지만, 과도한 수송에 있어서의 진동이나, 특히 횡형 스크롤 압축기를 차량 등 이동체에 탑재하는 경우에는, JIS-D1601(자동차 부품 진동 시험 방법)에 개시된 바와 같이, 차량 스프링 상에 설치되는 제품의 시험 조건에 있어서, 70m/s2까지의 진동 가속도가 상정되어 있고, 요철이 있는 노면을 주행하는 것 등으로부터 가해지는 과대한 진동 가속도에 의해, 압축 기구부의 축심이 어긋나 버릴 가능성이 있다.When assembling the compression mechanism part of the scroll compressor, in order to align the pivoting scroll and the axial center of the fixed scroll loosely fitted to the eccentric part of the shaft, the position of the fixed scroll with respect to the main bearing member is adjusted and fastened with a bolt. Although the shaft center of the compression mechanism part is maintained by the clamping force of the said bolt in the stationary driving state, it is JIS-D1601 (automobile) when vibration in excessive transportation and especially when a horizontal scroll compressor is mounted to a mobile body, such as a vehicle, are carried out. Component vibration test method), in the test conditions of the product installed on the vehicle spring, vibration acceleration up to 70 m / s 2 is assumed, and excessive loads applied from traveling on uneven roads, etc. The vibration acceleration may shift the shaft center of the compression mechanism portion.

일본 특허 출원 공개 제2009-121380호 공보Japanese Patent Application Publication No. 2009-121380

압축 기구부의 축심의 어긋남을 방지하기 위해서는, 볼트의 체결력을 증가시키는 것이 생각되지만, 그 경우에는 볼트 직경 확대에 의한 체결면의 확대나 체결되는 부품의 왜곡을 억제하기 위해, 각 부품의 치수가 커져 고비용으로 될 뿐만 아니라, 체결면의 왜곡이 증대되면 누설에 의한 성능의 저하가 우려된다.In order to prevent displacement of the shaft center of the compression mechanism, it is conceivable to increase the tightening force of the bolt. In that case, the dimensions of the respective parts are increased in order to suppress the expansion of the fastening surface due to the expansion of the bolt diameter and the distortion of the fastened part. Not only does it become expensive, but when the distortion of a fastening surface increases, the fall of the performance by a leak is feared.

본 발명은 냉동 냉장 공조 시스템 등의 냉매 가스를 압축하는 스크롤 압축기로, 특히 차량 등의 이동체에 탑재되어 과대한 진동 가속도가 가해질 가능성이 있는 압축기에 있어서, 외적으로 가해지는 진동에 대해, 압축 기구부의 축심의 어긋남을 방지하는 것을 목적으로 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a scroll compressor for compressing refrigerant gas, such as a refrigeration and air conditioning system, particularly in a compressor that is mounted on a moving body such as a vehicle, and may have excessive vibration acceleration. It is an object to prevent misalignment of the shaft.

본 발명의 목적은,SUMMARY OF THE INVENTION [0006]

주베어링 부재와 고정 스크롤을 볼트에 의해 체결하여 압축 기구부를 형성하는 스크롤 압축기에 있어서, 상기 주베어링 부재의 외주부와 고정 스크롤의 외주부를 국소적으로 용접하여, 상기 용접 개소가 밀폐 용기와 접하는 주베어링 부재의 외주면보다 내측으로 되고, 상기 용접은 대략 원형상의 용입(penetration)을 가짐으로써 달성된다.In a scroll compressor in which a main bearing member and a fixed scroll are fastened by bolts to form a compression mechanism portion, a main bearing in which the welding portion is in contact with a sealed container by locally welding the outer circumference of the main bearing member and the outer circumference of the fixed scroll. Inward of the outer circumferential surface of the member, the welding is achieved by having a substantially circular penetration.

본 발명에 따르면, 압축 기구부의 축심의 어긋남을 방지할 수 있다.According to the present invention, the displacement of the shaft center of the compression mechanism portion can be prevented.

도 1은 본 실시 형태의 횡형 스크롤 압축기의 단면도.
도 2는 도 1에 있어서의 압축 기구부 외주부 용접의 확대도.
도 3은 도 1에 있어서의 압축 기구부 외주 모따기부 용접의 확대도.
도 4는 도 1에 있어서의 고정 스크롤 외주를 작게 한 압축 기구부 외주부 용접의 확대도.
도 5는 도 1에 있어서의 압축 기구부 외주부 용접 개소 근방에 홈을 형성한 확대도.1 is a cross-sectional view of a horizontal scroll compressor of the present embodiment.
2 is an enlarged view of the welding of the compression mechanism portion outer peripheral portion in FIG. 1;
FIG. 3 is an enlarged view of the welding of the compression mechanism portion outer chamfered portion in FIG. 1. FIG.
FIG. 4 is an enlarged view of the welding of the compression mechanism unit outer circumferential portion in which the fixed scroll outer circumference in FIG. 1 is reduced.
FIG. 5 is an enlarged view in which a groove is formed in the vicinity of a welding mechanism outer peripheral portion welding location in FIG. 1. FIG.

이하, 횡형 밀폐형 스크롤을 예로 들어, 본 발명의 실시 형태에 대해 도면을 사용하여 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described using drawing, taking a lateral sealed scroll as an example.

도 1은 본 실시 형태의 횡형 스크롤 압축기의 단면도이다. 도 1에 도시하는 스크롤 압축기는 밀폐 용기(1) 내에, 압축 기구부 및 전동기부가 수납되어 있다. 압축 기구부는 고정 스크롤(2), 선회 스크롤(3), 주베어링 부재(4), 크랭크축(5), 올덤 링(6)을 주요 구성 요소로 하고 있다. 고정 스크롤(2)의 흡입구에는 외부 사이클에 접속하는 흡입 파이프(7)가 압입되어 있다. 전동기부는 고정자(8) 및 회전자(9)로 이루어지고, 고정자(8)는 밀폐 용기(1)에 수축 끼워 맞춤 등에 의해 고정되어 있고, 회전자(9)는 크랭크축(5)에 압입 등에 의해 끼움 부착되어 있다.1 is a cross-sectional view of a horizontal scroll compressor of the present embodiment. In the scroll compressor shown in FIG. 1, the compression mechanism part and the electric motor part are housed in the airtight container 1. The compression mechanism part has the fixed scroll 2, the revolving scroll 3, the main bearing member 4, the crankshaft 5, and the Oldham ring 6 as main components. A suction pipe 7 connected to an external cycle is press-fitted into the suction port of the fixed scroll 2. The electric motor part consists of the stator 8 and the rotor 9, and the stator 8 is fixed to the airtight container 1 by shrink fitting or the like, and the rotor 9 is press-fitted into the crankshaft 5 or the like. By fitting.

주베어링 부재(4)의 외주부는 밀폐 용기(1)에 고정되어 있고, 크랭크축(5)의 회전을 받는 베어링을 구비하고 있다. 크랭크축(5)의 편심부에는 선회 스크롤(3)이 회전 가능하게 설치되고, 선회 스크롤(3)을 고정 스크롤(2)에 대해 자전시키지 않고 선회 운동시키도록 선회 스크롤(3)과 주베어링 부재(4) 사이에서 지지 안내하는 자전 규제 부재로서의 올덤 링(6)을 갖고 있다.The outer peripheral part of the main bearing member 4 is fixed to the airtight container 1, and is provided with the bearing which receives the rotation of the crankshaft 5. As shown in FIG. The pivoting scroll 3 is rotatably provided in the eccentric part of the crankshaft 5, and the pivoting scroll 3 and the main bearing member are provided so that the pivoting scroll 3 can pivot without rotating against the fixed scroll 2. It has the Oldham ring 6 as a rotation control member which guides between (4).

선회 스크롤(3)과 맞물려 압축실을 형성하는 고정 스크롤(2)은 주베어링 부재(4)에 볼트(10)에 의해 체결되어 있다. 크랭크축(5)의 편심부와 반대측의 축 단부는 부베어링(11)으로 지지되어 있고, 부베어링(11)은 밀폐 용기(1)에 고정된 구획판(12)에 설치되어 있다.The fixed scroll 2 which meshes with the revolving scroll 3 to form a compression chamber is fastened to the main bearing member 4 by bolts 10. The shaft end opposite to the eccentric part of the crankshaft 5 is supported by the sub bearing 11, and the sub bearing 11 is attached to the partition plate 12 fixed to the airtight container 1.

크랭크축(5)을 통해 전동기의 회전을 받은 선회 스크롤(3)은 올덤 링(6)에 규제되면서 선회 운동한다. 이 동작에 의해, 흡입 파이프(7)를 통해 고정 스크롤(2)의 흡입구로부터 흡입된 냉매 가스는 압축되고, 토출 구멍(13)으로부터 밀폐 용기(1) 중으로 방출된다. 방출된 냉매 가스는 토출 파이프(14)로부터 외부 사이클로 공급된다.The turning scroll 3, which has been rotated by the electric motor through the crankshaft 5, is pivoted while being restricted to the Oldham ring 6. By this operation, the refrigerant gas sucked in from the suction port of the fixed scroll 2 through the suction pipe 7 is compressed and discharged from the discharge hole 13 into the sealed container 1. The released refrigerant gas is supplied to the external cycle from the discharge pipe 14.

스크롤 압축기 조립 시에, 고정 스크롤(2)을 주베어링 부재(4)에 볼트(10)에 의해 체결할 때에, 맞물리게 하는 고정 스크롤(2)과 선회 스크롤(3)의 축심을 맞추기 위해, 주베어링 부재(4)에 대한 고정 스크롤(2)의 위치를 조정하여 볼트(10)에 의해 체결된다.At the time of assembling the scroll compressor, when the fixed scroll 2 is fastened to the main bearing member 4 with the bolts 10, the main bearing is used to align the center of gravity of the fixed scroll 2 and the revolving scroll 3 to be engaged. The position of the fixed scroll 2 relative to the member 4 is adjusted and fastened by the bolt 10.

볼트(10)로 체결된 고정 스크롤(2)과 주베어링 부재(4)의 외주부의 밀폐 용기(1)와 접하는 외주면보다 내측의 외주 절결부(15) 등을 국소적으로 1개소 혹은 몇개소, 용입 형상이 대략 원형으로 되는 용접(16)을 행한다. 그 후에, 압축 기구부의 주베어링 부재(4) 외주부와 밀폐 용기(1)를 용접함으로써, 외적으로 가해지는 진동에 대해, 고정 스크롤(2)과 선회 스크롤(3)의 축심이 어긋나는 것을 방지할 수 있다.One or a few places of the fixed scroll 2 fastened by the bolt 10 and the outer peripheral cutout 15 inside the outer peripheral surface of the main bearing member 4 in contact with the sealed container 1 of the outer peripheral part, Welding 16 in which the penetration shape becomes substantially circular is performed. Thereafter, by welding the outer peripheral portion of the main bearing member 4 and the closed container 1 of the compression mechanism portion, it is possible to prevent the shaft center of the fixed scroll 2 and the swinging scroll 3 from shifting against the externally applied vibration. have.

고정 스크롤(2)과 주베어링 부재(4)의 충분한 용접 강도를 얻기 위해서는, 용접에 의한 용접 금속의 보강 높이 H(17)가 0.5 내지 3.0㎜ 정도이다. 이 점에서, 접합되는 주베어링 부재(4)의 외주와 밀폐 용기(1)의 내주의 직경의 차가 0.5㎜ 이하에서 관리되고 있다. 그러나, 용접에 의한 용접 금속의 보강 부분이 주베어링 부재(4)의 외주부의 밀폐 용기(1)와 접하는 외주면에 있으면 주베어링 부재(4)와 밀폐 용기(1)의 접합을 저해하게 되므로, 용접 금속의 보강 높이 관리나 삭제가 필요해진다. 이렇게 되면, 용접 조건 관리의 엄밀화나 삭제된 용접 금속분의 제거 등, 조립성을 악화시킨다. 그것뿐만 아니라, 완전히 제거되지 않은 용접 금속분이 나오게 되어, 압축 기구부나 베어링의 간극에 침입하면 고장의 원인으로 될 수밖에 없다.In order to obtain sufficient weld strength of the fixed scroll 2 and the main bearing member 4, the reinforcement height H17 of the weld metal by welding is about 0.5-3.0 mm. In this respect, the difference between the outer circumference of the main bearing member 4 to be joined and the inner circumference of the sealed container 1 is managed at 0.5 mm or less. However, when the reinforcement part of the weld metal by welding is in the outer peripheral surface which contacts the sealed container 1 of the outer peripheral part of the main bearing member 4, the joining of the main bearing member 4 and the sealed container 1 will be inhibited, so welding It is necessary to manage or remove the reinforcement height of the metal. This deteriorates the assemblability, such as strictening of welding condition management and removal of deleted weld metal powder. Not only that, but the weld metal powder which is not completely removed comes out, and if it intrudes into the clearance of a compression mechanism part or a bearing, it will become a cause of failure.

따라서, 이 용접부를 밀폐 용기(1)와 접하는 외주면을 보다 내측의 외주 절결부(15)로 함으로써, 고정 스크롤(2)과 주베어링 부재(4)의 외주부의 용접 개소가 밀폐 용기(1)와 간섭하지 않아, 조립성을 손상시키는 경우가 없어진다. 고정 스크롤(2)과 주베어링 부재(4)의 체결력을 향상시켜 축심의 어긋남을 방지할 수 있다.Therefore, by making the outer peripheral surface which contact | connects this welding part the airtight container 1 into the outer periphery notch 15 of an inner side, the welding location of the outer peripheral part of the fixed scroll 2 and the main bearing member 4 will be sealed. It does not interfere, and there is no case of impairing the assemblability. The clamping force of the fixed scroll 2 and the main bearing member 4 can be improved to prevent displacement of the shaft center.

또한, 고정 스크롤(2)과 주베어링 부재(4)의 외주부의 밀폐 용기(1)와 접하는 외주면보다 내측의 용접 개소에 대해서는, 도 3에 도시한 바와 같이 고정 스크롤(2)과 주베어링 부재(4)의 체결면의 코너부에 모따기부(18)를 실시하여, 모따기부(18)를 용접(16)하는 것이나, 도 4에 도시한 바와 같이 고정 스크롤(2)의 외주원을 주베어링 부재(4)의 밀폐 용기(1)와 접하는 외주면보다 작게 하여, 고정 스크롤(2)의 외주부와 주베어링 부재(4)의 체결면의 코너부를 용접(16)하는 것도 들 수 있다.In addition, about the welding part inside the outer peripheral surface which contact | connects the fixed container 2 and the closed container 1 of the outer peripheral part of the main bearing member 4, as shown in FIG. 3, the fixed scroll 2 and the main bearing member ( The chamfered part 18 is given to the corner part of the fastening surface of 4), and the chamfered part 18 is welded 16, and as shown in FIG. 4, the outer periphery of the fixed scroll 2 is a main bearing member. It is also possible to weld 16 to the outer peripheral part of the fixed scroll 2 and the corner part of the fastening surface of the main bearing member 4 by making it smaller than the outer peripheral surface which contacts the airtight container 1 of (4).

또한, 도 5에 있어서는, 고정 스크롤(2) 또는 주베어링 부재(4) 혹은 양쪽의 용접부 근방에 홈 또는 구멍(19)을 형성하고 있으므로, 용접에 의한 체결면의 변형을 더욱 작게 하는 것이 가능해진다. 이 홈 또는 구멍은 용접한 부분과 밀폐 용기의 중심 사이에 위치시킴으로써, 고정 스크롤(2), 주베어링 부재(4), 밀폐 용기의 직경 방향의 변형으로 흡수하므로 가장 효율이 좋다.In addition, in FIG. 5, since the groove | channel or hole 19 is formed in the fixed scroll 2, the main bearing member 4, or the welding part of both sides, the deformation | transformation of the fastening surface by welding can be made further smaller. . The grooves or holes are located between the welded portion and the center of the sealed container, whereby the fixed scroll 2, the main bearing member 4, and the sealed container are absorbed by the deformation in the radial direction.

압축실을 형성하기 위해, 축심을 맞춘 상태에서 볼트에 의해 체결되어 있는 주베어링 부재와 고정 스크롤의 외주부에 대해, 주베어링 부재의 외주의 밀폐 용기와 접촉하는 외주면보다 내측의 외주 절결부 등에서, 주베어링 부재와 고정 스크롤을 국소적으로 용접한다.In order to form the compression chamber, the main bearing member fastened by the bolt in the state where the shaft is aligned and the outer circumference of the fixed scroll, at the outer circumferential cutout portion inside the outer circumferential surface in contact with the sealed container of the outer circumference of the main bearing member, Locally weld the bearing member and the fixed scroll.

이상의 실시예에서는, 압축 기구부를 볼트에 의해 체결한 후에, 외주부를 국소적으로 용접하고 있다. 이와 같은 구성을 채용하면, 차량 등 이동체에 탑재하는 과대한 진동 가속비가 가해지는 경우라도, 압축 기구부의 축심의 어긋남을 방지할 수 있다. 나아가서는, 내진 강도를 향상시킬 수 있다.In the above embodiment, the outer peripheral portion is welded locally after the compression mechanism portion is fastened by bolts. By adopting such a configuration, even when an excessive vibration acceleration ratio mounted on a moving object such as a vehicle is applied, the displacement of the shaft center of the compression mechanism portion can be prevented. Furthermore, seismic strength can be improved.

본 실시예는 종형 스크롤 압축기에 있어서도, 열차에 탑재된 경우의 열차 연결 시의 충격 등, 횡방향의 진동 가속도에 대해 유효하다.This embodiment is also effective for a vertical scroll compressor for vibration acceleration in the lateral direction, such as an impact during train connection when mounted on a train.

특허 문헌 1의 실시예로서 외주부의 저열량 용접에 의한 체결이 있지만, 이 점에 대해서는 고압 냉매 사용 시의 압축 기구부의 시일성을 유지하여, 누설을 방지하는 것이 목적이고, 차량 탑재 등의 과도한 진동 가속도에 대응하는 것은 아니다.As an example of Patent Literature 1, there is a fastening by low-calorie welding of the outer circumference, but in this regard, the purpose is to maintain the sealability of the compression mechanism part when using a high-pressure refrigerant, and to prevent leakage, and to excessive vibration acceleration such as vehicle mounting. It does not correspond to.

1 : 밀폐 용기
2 : 고정 스크롤
3 : 선회 스크롤
4 : 주베어링 부재
5 : 크랭크축
6 : 올덤 링
7 : 흡입 파이프
8 : 고정자
9 : 회전자
10 : 볼트
11 : 부베어링
12 : 구획판
13 : 토출 구멍
14 : 토출 파이프
15 : 외주 절결부
16 : 고정 스크롤과 주베어링 부재의 용접부
17 : 용접 금속의 보강 높이 H
18 : 모따기부
19 : 용접부 근방의 홈 또는 구멍1: sealed container
2: Fixed scroll
3: turning scroll
4: main bearing member
5: crankshaft
6: Oldham Ring
7: suction pipe
8: stator
9: rotor
10: Bolt
11: buoy bearing
12: partition plate
13: discharge hole
14: discharge pipe
15: Outer cutout
16: welded part of fixed scroll and main bearing member
17: reinforcement height H of weld metal
18: chamfer
19: groove or hole near the weld

Claims (4)

삭제delete 주베어링 부재와 고정 스크롤을 볼트에 의해 체결하여 압축 기구부를 형성하는 스크롤 압축기에 있어서,
상기 주베어링 부재의 외주부와 상기 고정 스크롤의 외주부를 국소적으로 용접하여, 상기 용접 개소가 밀폐 용기와 접하는 주베어링 부재의 외주면보다 내측으로 되고, 상기 용접은 원형상의 용입을 갖는 것을 특징으로 하는, 스크롤 압축기.A scroll compressor for fastening a main bearing member and a fixed scroll by bolts to form a compression mechanism.
The outer periphery of the main bearing member and the outer periphery of the fixed scroll are locally welded so that the welding location is inward of the outer periphery of the main bearing member in contact with the hermetic container, and the welding has a circular penetration. Scroll compressor. 제2항에 있어서, 상기 용접한 부분의 근방의 상기 주베어링 부재 및 상기 고정 스크롤에 홈 또는 구멍을 형성한 것을 특징으로 하는, 스크롤 압축기.The scroll compressor according to claim 2, wherein a groove or a hole is formed in the main bearing member and the fixed scroll in the vicinity of the welded portion. 제3항에 있어서, 상기 홈 또는 구멍은 상기 용접한 부분과 상기 밀폐 용기의 중심 사이에 위치하는 것을 특징으로 하는, 스크롤 압축기.4. A scroll compressor according to claim 3, wherein the groove or hole is located between the welded portion and the center of the hermetic container.
KR1020110012110A 2011-01-14 2011-02-11 Scroll Compressor KR101266741B1 (en)

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