JPH08312542A - Scroll compressor - Google Patents

Scroll compressor

Info

Publication number
JPH08312542A
JPH08312542A JP11833695A JP11833695A JPH08312542A JP H08312542 A JPH08312542 A JP H08312542A JP 11833695 A JP11833695 A JP 11833695A JP 11833695 A JP11833695 A JP 11833695A JP H08312542 A JPH08312542 A JP H08312542A
Authority
JP
Japan
Prior art keywords
bearing
bearing member
sub
housing
main
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP11833695A
Other languages
Japanese (ja)
Inventor
Takao Mizuno
水野隆夫
Michinori Matsunaga
松永陸憲
Mitsuhiro Okada
岡田光弘
Kenji Tojo
東條健司
Yoshikatsu Tomita
富田好勝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11833695A priority Critical patent/JPH08312542A/en
Publication of JPH08312542A publication Critical patent/JPH08312542A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations 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
    • F04C23/008Hermetic pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/02Arrangements of bearings

Landscapes

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

Abstract

PURPOSE: To mechanically prevent the partial contact of a bearing by making the internal peripheral surface of a bearing member be a slide bearing face, fitting the bearing member to a housing with a minute gap, and tilting the bearing member in a given range in this minute gap following the inclination of a crank shaft in operation. CONSTITUTION: A main bearing section has a man bearing member 31a, the internal peripheral surface of which is made to be a slide bearing face by providing a bearing bushing 31c, for example, inside a bearing holding member 31b, forming a cylindrical body, in the outside of which a projected line 31d is formed extending in the peripheral direction. In the bearing bushing 31c, a thrust bearing section 34 is uniformly formed. The main bearing member 31a can be assembled by being inserted into the housing 3e provided in a main frame 3 from an upper section and is fittedly held with a minute gap so as to be tilted in a given range, and the self-weight of the main bearing member 31a is supported on a receiving face 3f. In order to prevent the rotation of the main bearing member 31a, the housing 3e is provided with a detent 3g.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、スクロール圧縮機に係
り、特に冷凍用や空調用に用い、簡便な構造で軸受の耐
負荷性の向上を図るのに好適なスクロール圧縮機に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scroll compressor, and more particularly to a scroll compressor which is used for refrigeration and air conditioning and which is suitable for improving load bearing capacity of a bearing with a simple structure.

【0002】[0002]

【従来の技術】従来のスクロール圧縮機における、機構
的に軸受の片当りを防止する軸受の配置や構造に関して
は、例えば特開平3−96678号に開示されており、
その例が図8に示される。同図において、51は圧縮機
本体、52はフレーム、53は球面軸受部A、54は回
転軸、55はオルダムリング、56は旋回スクロール、
57は固定スクロール、58はスクロールラップ部、5
9は電動機、60は電動機の固定子、61は回転子、6
2はバランスウェイト、63はサブベアリング、64は
球面軸受部B、65は密閉容器、66は潤滑油である。
同図に示されるように、主軸又はクランク軸に対し電動
機を挟んだ両側に軸受部が配置され、これらの軸受部は
少なくとも一方について、内面をすべり軸受とし外径部
を球面形状とした軸受部材を、内面球面形状のハウジン
グ内に嵌合した構造とされている。また、他の構造とし
て、例えば特開平4−358784号に開示されている
ように、クランク軸に対し電動機の両側に軸受部が配置
され、主軸の軸受部の少なくとも一方について、主軸の
軸部を中央部が凸となる鼓状の突条部を形成し、これに
円筒状のブッシュを微小隙間をもって嵌合し、この円筒
状のブッシュを軸受で支持する構造がある。
2. Description of the Related Art The arrangement and structure of a bearing that mechanically prevents one-sided bearing contact in a conventional scroll compressor is disclosed in, for example, Japanese Patent Laid-Open No. 3-96678.
An example is shown in FIG. In the figure, 51 is a compressor main body, 52 is a frame, 53 is a spherical bearing portion A, 54 is a rotating shaft, 55 is an Oldham ring, 56 is an orbiting scroll,
57 is a fixed scroll, 58 is a scroll wrap part, 5
9 is an electric motor, 60 is a stator of the electric motor, 61 is a rotor, 6
2 is a balance weight, 63 is a sub-bearing, 64 is a spherical bearing B, 65 is a closed container, and 66 is lubricating oil.
As shown in the figure, bearings are arranged on both sides of the main shaft or crankshaft with the electric motor sandwiched between them. At least one of these bearings has a sliding bearing on the inner surface and a spherical outer diameter portion. Is fitted in a housing having a spherical inner surface. As another structure, for example, as disclosed in JP-A-4-358784, bearing portions are arranged on both sides of the electric motor with respect to the crankshaft, and at least one of the bearing portions of the main shaft has a shaft portion of the main shaft. There is a structure in which a drum-shaped protrusion having a convex central portion is formed, a cylindrical bush is fitted into this with a minute gap, and the cylindrical bush is supported by a bearing.

【0003】[0003]

【発明が解決しようとする課題】特開平3−96678
号に開示されている従来技術の場合、外径部を球面形状
とした軸受部材を内面球面形状のハウジング内に嵌合し
た構造のため、軸受部材とハウジングを共に球面形状と
することを必要とし、加工工数が多くかかったり、特別
な専用加工機が必要になるなど、生産上の問題がある。
また、外径部を球面にする必要から、軸受部材の大きさ
が大きくなり、特に軸受荷重が大きい主軸受に適用する
場合、軸受部材外径寸法が大きくなり、この軸受部材を
組込むため圧縮機径寸法を大きくする必要となるなどの
問題がある。
[Patent Document 1] Japanese Patent Application Laid-Open No. 3-96678
In the case of the prior art disclosed in No. 6, the bearing member having a spherical outer diameter is fitted into the housing having a spherical inner surface, and therefore both the bearing member and the housing need to be spherical. However, there are problems in production, such as requiring a lot of processing man-hours and requiring a special processing machine.
Further, since the outer diameter portion needs to be spherical, the size of the bearing member becomes large, and particularly when the bearing member is applied to a main bearing having a large bearing load, the outer diameter dimension of the bearing member becomes large. There are problems such as the need to increase the diameter.

【0004】また、公開平4−358784号に開示さ
れているように、主軸又はクランク軸の軸受部の少なく
とも一方について、クランク軸の軸部を中央部が凸とな
る鼓状の突条部を形成し、これに円筒状のブッシュを微
小隙間をもって嵌合し、この円筒状のブッシュをフレー
ムで支持する構造については、クランク軸に円筒状のブ
ッシュを組付ける必要から、クランク軸径を本来必要と
する径よりさらに細くする必要がある。
Further, as disclosed in Japanese Laid-Open Patent Publication No. 4-358784, a drum-shaped ridge having a convex central portion is formed on the crankshaft shaft portion in at least one of the main shaft and the crankshaft bearing portion. For a structure in which a cylindrical bush is fitted to this with a minute gap, and this cylindrical bush is supported by a frame, the crankshaft diameter is originally required because the cylindrical bush must be assembled to the crankshaft. It is necessary to make it thinner than the diameter.

【0005】特に、クランク軸のクランク部を、主軸受
部用円筒状ブッシュを組付ける必要から、旋回軸受面圧
を許容値内とするために必要な外径を得ることができ
ず、必要径を得るため旋回軸受部を分割して、主軸受部
用円筒状ブッシュを組付後改めて旋回軸受部を組付ける
必要があり、構造が複雑化する。
In particular, since it is necessary to assemble the cylindrical bush for the main bearing portion to the crank portion of the crankshaft, it is not possible to obtain the outer diameter necessary for keeping the slewing bearing surface pressure within the allowable value, and the necessary diameter is required. In order to obtain the above, it is necessary to divide the slewing bearing portion and assemble the slewing bearing portion again after assembling the cylindrical bush for the main bearing portion, which complicates the structure.

【0006】またスクロール圧縮機におけるクランク軸
は、旋回スクロールを駆動することによる圧縮荷重と旋
回スクロールに発生する遠心力及びその遠心力を打消す
バランスウエイトの遠心力などが作用する。
Further, the crankshaft in the scroll compressor is subjected to a compressive load generated by driving the orbiting scroll, a centrifugal force generated in the orbiting scroll, and a centrifugal force of a balance weight for canceling the centrifugal force.

【0007】クランク軸は、これらの荷重により軸受特
性を低下させるほどの変形が起きないように必要な軸径
に形状を決定でき、軸の変形によって生じる軸受の片当
りとそれによる軸受耐荷重の低下は防止できる。
The crankshaft can be shaped so as to have a required shaft diameter so as not to be deformed to such an extent that the bearing characteristics are deteriorated by these loads. The decrease can be prevented.

【0008】しかし、軸受としてすべり軸受を使用する
場合は、すべり軸受理論から油膜を形成するために一定
の軸受隙間が必要であり、主軸受と副軸受間の外側に作
用する荷重を支持するいわゆる片持軸受となるスクロー
ル圧縮機の軸受構造では、電動機の両側に主軸受と副軸
受を設け、両軸受間寸法を大きくし、軸受隙間内の軸の
傾きを相対的に減らすことはできるが、スクロール圧縮
機の高さ寸法の制限などから隙間内での軸の傾きをなく
すことはできず、軸受の耐負荷性能を低下させている。
However, when a slide bearing is used as the bearing, a certain bearing gap is required to form an oil film according to the slide bearing theory, and a so-called so-called load supporting outside load between the main bearing and the sub bearing is supported. In the bearing structure of a scroll compressor that is a cantilever bearing, it is possible to provide a main bearing and an auxiliary bearing on both sides of the electric motor, increase the dimension between both bearings, and relatively reduce the inclination of the shaft in the bearing gap, Due to the limitation of the height of the scroll compressor, it is not possible to eliminate the inclination of the shaft in the clearance, which deteriorates the load bearing performance of the bearing.

【0009】また電動機の両側に密閉容器の内径面を利
用して主軸受部と副軸受部を固定する構造では、簡便な
構造で両軸受の位置決めをするのは困難である。
Further, with the structure in which the main bearing portion and the sub bearing portion are fixed on both sides of the electric motor by utilizing the inner diameter surface of the closed container, it is difficult to position both bearings with a simple structure.

【0010】本発明は、前記従来の問題点を解消し、簡
便な構造で機構的に軸受の片当りを防止し、軸受の耐負
荷性の向上を図ることを目的とする。
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, to mechanically prevent the bearing from partially hitting, and to improve the load resistance of the bearing.

【0011】[0011]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、軸受の構造として、クランク軸を電動機
を挟んでクランク部に近い主軸受部とクランク部より遠
い副軸受部で支持し、軸受間距離を大きくすると共に、
旋回軸受部と主軸受部と副軸受部のいずれかまたは全て
の軸受部を、軸受部材とこの軸受部材を保持するハウジ
ングにより構成し、軸受部材の内径面をすべり軸受面と
し、軸受部材はハウジングに微小隙間をもって嵌合し、
この微小隙間内で軸受部材を運転中のクランク軸の傾き
に追従して一定の範囲で傾斜可能とする。
In order to achieve the above object, the present invention has a structure of a bearing in which a crankshaft is supported by a main bearing portion near a crank portion and an auxiliary bearing portion distant from the crank portion with an electric motor interposed therebetween. And increase the distance between bearings,
Any or all of the orbiting bearing portion, the main bearing portion, and the sub bearing portion is configured by a bearing member and a housing that holds the bearing member, and the inner diameter surface of the bearing member serves as a sliding bearing surface, and the bearing member is the housing. Fit with a small gap to
Within this minute gap, the bearing member can be tilted within a certain range by following the tilt of the crankshaft during operation.

【0012】運転中のクランク軸の傾きに追従して一定
の範囲で傾斜可能とする構造の一例として、軸受部材を
内面をすべり軸受面とし外径部に突条を形成した構成と
し、軸受部材を保持するハウジングを円筒形状とし、ハ
ウジングの円筒面内に軸受部材を微小隙間をもって嵌合
して軸受部を構成し、軸受部材を運転中のクランク軸の
傾きに追従して一定の範囲で傾き可能とする。
As an example of a structure in which the crankshaft can be tilted in a certain range by following the tilt of the crankshaft during operation, the bearing member has a sliding bearing surface on the inner surface, and a ridge is formed on the outer diameter portion. The housing that holds is made cylindrical and the bearing member is configured by fitting the bearing member in the cylindrical surface of the housing with a minute gap, and the bearing member is tilted within a certain range by following the tilt of the crankshaft during operation. It is possible.

【0013】また他の一例として、軸受部材を内面をす
べり軸受面とし外径部を円筒形状とし、軸受部材を保持
するハウジングの形状として中央部を内径側に突条部分
を有する円筒形状とし、このハウジング内に前記軸受部
材を微小隙間をもって嵌合して軸受部を構成することに
より軸受部材を一定の範囲で傾き可能とする。
As another example, the inner surface of the bearing member is a sliding bearing surface, the outer diameter portion is a cylindrical shape, and the housing for holding the bearing member is a cylindrical shape having a ridge portion on the inner diameter side. The bearing member can be tilted within a certain range by fitting the bearing member in the housing with a minute gap to form the bearing portion.

【0014】軸受部材の傾き可能量(以下調芯とも呼
ぶ)は、軸受部材とハウジングの形状および微小隙間に
より設定されるが、この調芯量は軸受隙間内の傾きを吸
収できる程度の量に設定することが適切である。
The tiltable amount of the bearing member (hereinafter also referred to as the centering) is set by the shapes of the bearing member and the housing and the minute gap. The centering amount is an amount that can absorb the tilt in the bearing gap. It is appropriate to set.

【0015】[0015]

【作用】主軸受部と副軸受部の中心間距離を大きく設定
し、軸受隙間内の軸の傾きを相対的に小さくした上に、
軸受部材がこれを保持するハウジングとの微小隙間の中
で運転中のクランク軸の傾きに追従して傾斜可能とな
り、調芯機構が得られる。また、軸受部材の外径部を円
筒状または突条を有する円筒状としたため、軸受部材の
外径を球状とした場合に対し、軸受部材の外径部最大径
を小さく設定できる。このため、スクロール圧縮機の外
径寸法を大きくすることなく各軸受部に調芯機構を取入
れることができる。
[Function] The center distance between the main bearing portion and the sub bearing portion is set large, and the inclination of the shaft in the bearing gap is made relatively small.
The bearing member can be tilted in a minute gap between the bearing member and the housing that holds the bearing member so as to follow the tilt of the crankshaft during operation, so that a centering mechanism can be obtained. Further, since the outer diameter portion of the bearing member is cylindrical or has a cylindrical shape having a protrusion, the maximum outer diameter portion of the bearing member can be set smaller than when the outer diameter of the bearing member is spherical. Therefore, the centering mechanism can be installed in each bearing without increasing the outer diameter of the scroll compressor.

【0016】また、クランク軸側に円筒状のブッシュを
用いて調芯する構造ではクランク軸のクランク部の外径
を軸受ブッシュの組立上の問題から細径化し、クランク
部の必要径を確保するためクランク部を分割構造とする
必要がある従来例に対し、クランク軸のクランク部を分
割する必要はなく、簡単な構造で調芯機構を取入れるこ
とができる。
Further, in a structure in which a cylindrical bush is used for alignment on the crankshaft side, the outer diameter of the crank portion of the crankshaft is reduced due to problems in assembling the bearing bush, and the required diameter of the crank portion is secured. Therefore, it is not necessary to divide the crank portion of the crankshaft as compared with the conventional example in which the crank portion needs to have a divided structure, and the aligning mechanism can be incorporated with a simple structure.

【0017】[0017]

【実施例】以下本発明のスクロール圧縮機を各図に示さ
れた実施例について詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The scroll compressor of the present invention will be described in detail below with reference to the embodiments shown in the drawings.

【0018】図1には本発明の第1の実施例に係るスク
ロール圧縮機が示されている。
FIG. 1 shows a scroll compressor according to a first embodiment of the present invention.

【0019】図1の本発明のスクロール圧縮機におい
て、1は固定スクロールで、スクロール端板1aと端板
1aに直立する渦巻状のラップ1bを有し、ラップ外周
側に吸入ポート1cを有しラップ中央部に吐出ポート1
dを有している。
In the scroll compressor of the present invention shown in FIG. 1, 1 is a fixed scroll, which has a scroll end plate 1a, a spiral wrap 1b standing upright on the end plate 1a, and an intake port 1c on the outer peripheral side of the wrap. Discharge port 1 in the center of the wrap
d.

【0020】2は旋回スクロールで、端板2aと端板2
aに直立する渦巻状のラップ2bを有し、ラップの背面
中央に旋回軸受部30を有し、ラップ2bの側面に近い
位置で端板2aを貫通する細径の中間孔2eが設けられ
ている。固定スクロール1と旋回スクロール2は互いに
ラップを内側として噛み合い圧縮室を形成している。3
は主フレームで側面にはガス通路3dが設けられ、固定
スクロール1を複数のボルトで固定し、旋回スクロール
端板2aを固定スクロール1と主フレーム台座部3aで
挟持している。フレーム3の中央部には主軸受部31を
有し、固定スクロール1、旋回スクロール2の背面とで
背圧室9を形成する。背圧室9は円筒形状に形成された
主フレーム台座部3aによって、内側の空間9aと外側
の空間9bの二つの空間に区切られている。ただし、両
空間9a,9bは旋回スクロール2の背面と台座面3a
間の隙間で連通している。背圧室9の内側の空間9aは
中間孔2eにより圧縮室に連通している。
Reference numeral 2 is an orbiting scroll, which is an end plate 2a and an end plate 2
a has a spiral wrap 2b standing upright, has a slewing bearing portion 30 in the center of the back surface of the wrap, and has a small-diameter intermediate hole 2e penetrating the end plate 2a at a position close to the side surface of the wrap 2b. There is. The fixed scroll 1 and the orbiting scroll 2 mesh with each other with the wraps inside to form a compression chamber. Three
The main frame is provided with a gas passage 3d on its side surface, the fixed scroll 1 is fixed by a plurality of bolts, and the orbiting scroll end plate 2a is sandwiched between the fixed scroll 1 and the main frame pedestal portion 3a. A main bearing portion 31 is provided at the center of the frame 3, and the fixed scroll 1 and the back surface of the orbiting scroll 2 form a back pressure chamber 9. The back pressure chamber 9 is divided into two spaces, an inner space 9a and an outer space 9b, by a main frame pedestal portion 3a formed in a cylindrical shape. However, both spaces 9a and 9b are formed on the back surface of the orbiting scroll 2 and the pedestal surface 3a.
They communicate with each other in the gap between them. The space 9a inside the back pressure chamber 9 communicates with the compression chamber through the intermediate hole 2e.

【0021】4はシール部材で背圧室9と主軸受部31
の間の位置で主フレーム3に設けたリング状の溝3bに
保持されており、旋回スクロール2の十分なめらかに加
工された下端面2dに摺動自在に密着している。シール
部材4と主軸受部31との間の位置で主フレーム3に主
フレーム3の下方空間に連通する排油孔19が設けら
れ、排油孔19には排油パイプ20が取付けられてい
る。
Reference numeral 4 denotes a seal member, which is a back pressure chamber 9 and a main bearing portion 31.
It is held in a ring-shaped groove 3b provided in the main frame 3 at a position between them, and slidably adheres to the sufficiently smoothed lower end surface 2d of the orbiting scroll 2. An oil drain hole 19 communicating with a space below the main frame 3 is provided in the main frame 3 at a position between the seal member 4 and the main bearing portion 31, and an oil drain pipe 20 is attached to the oil drain hole 19. .

【0022】5はオルダムリングで、固定スクロール1
と旋回スクロール2の自転防止部材で、背圧室9の外側
の空間9b内の取付けられている。オルダムリング5は
直交する二対のキーを有し、旋回スクロールの端板2a
に設けた一対のキー溝(図示せず)および主フレーム台
座部3aの外側部位置に設けられた一対のキー溝3cに
係合している。
Reference numeral 5 is an Oldham ring, which is a fixed scroll 1
A rotation preventing member for the orbiting scroll 2 is mounted inside the space 9b outside the back pressure chamber 9. The Oldham ring 5 has two pairs of orthogonal keys, and the end plate 2a of the orbiting scroll.
Are engaged with a pair of key grooves (not shown) provided on the main frame pedestal portion 3a and a pair of key grooves 3c provided on the outer side positions of the main frame pedestal portion 3a.

【0023】6はクランク軸で内部に給油路22を有
し、クランク軸6のクランク部6aは旋回スクロール2
の旋回軸受部30に連結している。クランク軸6は電動
機7を挟んで位置する主フレーム3に設けた主軸受部3
1と副フレーム8に設けた副軸受部32にて支持され
る。また、クランク軸6はスラスト受け部6bを介して
主軸受部31の上端側に設けられたスラスト軸受34に
より支持される。
Reference numeral 6 is a crankshaft having an oil supply passage 22 therein, and a crank portion 6a of the crankshaft 6 is an orbiting scroll 2
Is connected to the slewing bearing unit 30 of FIG. The crankshaft 6 is a main bearing portion 3 provided on the main frame 3 which is located with the electric motor 7 in between.
1 and a sub bearing portion 32 provided on the sub frame 8. The crankshaft 6 is supported by the thrust bearing 34 provided on the upper end side of the main bearing portion 31 via the thrust receiving portion 6b.

【0024】主軸受部31、および副軸受部32の構造
は図2に示されており、詳細は後述する。
The structures of the main bearing portion 31 and the sub bearing portion 32 are shown in FIG. 2, and the details will be described later.

【0025】電動機7は電動機テスター7aとクランク
軸6に固定された電動機ローター7bより構成される。
図2に示されるように副フレーム8は、副フレーム8に
保持した副軸受部32の軸心が主軸受部31の軸心に一
致する位置にて、副フレーム支え10に数本のボルト1
0aにて固定されている。副フレーム8は、その大径孔
8h内に小径ボルト10aを挿通して副フレーム10に
固定することにより、径方向の位置合わせが可能となっ
ている。11はバランスウエイトで電動機7の上方の位
置にてクランク軸6に圧入固定されており、12は副バ
ランスウエイトで電動機ローター7bに固定されてい
る。13は潤滑油、14は密閉容器で密閉容器内は吐出
圧力に保持され、密閉容器胴部14aは主フレーム3と
電動機ステーター7aおよび副フレーム支え10を固定
支持する。16は吸入口、17は吐出口でそれぞれ密閉
容器14を貫通している。18はガスガイドでガス通路
3dに相対した位置にて密閉容器14に取付けられてい
る。21は給油パイプで、クランク軸6の下端中心部に
圧入されており、給油路22に連通している。給油パイ
プ21の下端部は潤滑油部13の中に開口している。
The electric motor 7 comprises an electric motor tester 7a and an electric motor rotor 7b fixed to the crankshaft 6.
As shown in FIG. 2, the sub-frame 8 has several bolts 1 attached to the sub-frame support 10 at a position where the axis of the sub-bearing portion 32 held by the sub-frame 8 matches the axis of the main bearing 31.
It is fixed at 0a. The sub-frame 8 can be aligned in the radial direction by inserting the small-diameter bolt 10a into the large-diameter hole 8h and fixing the sub-frame 10 to the sub-frame 10. Reference numeral 11 is a balance weight, which is press-fitted and fixed to the crankshaft 6 at a position above the electric motor 7, and 12 is a sub-balance weight, which is fixed to the electric motor rotor 7b. Reference numeral 13 is a lubricating oil, 14 is a closed container, and the inside of the closed container is maintained at a discharge pressure, and the closed container body 14a fixedly supports the main frame 3, the electric motor stator 7a, and the sub-frame support 10. Reference numeral 16 is a suction port, and 17 is a discharge port, which penetrate the sealed container 14, respectively. A gas guide 18 is attached to the closed container 14 at a position facing the gas passage 3d. Reference numeral 21 denotes an oil supply pipe, which is press-fitted into the center of the lower end of the crankshaft 6 and communicates with the oil supply passage 22. The lower end portion of the oil supply pipe 21 opens into the lubricating oil portion 13.

【0026】図2により、本発明のスクロール圧縮機の
1実施例における主軸受部31と副軸受部32の詳細を
説明する。
The details of the main bearing portion 31 and the sub bearing portion 32 in one embodiment of the scroll compressor of the present invention will be described with reference to FIG.

【0027】主軸受部31は、主軸受部材31aを有
し、該軸受部材31aは軸受保持部材31bの内側に例
えばすべり軸受ブッシュ31cを設けることにより内径
面をすべり軸受面とされ、その外側に円周方向に延びる
突条31dを形成した円筒状の構成とされている。突条
31dは、軸受部材又は軸受保持部材の外径の軸方向中
央部に設けた例を示すが、それより上方又は下方に配置
してもよく、またその頂部の曲率半径は適宜の大きさに
定められる。軸受ブッシュにはスラスト軸受部34が一
体に形成されている。該主軸受部材31aは主フレーム
3に設けたハウジング3e内に上方より挿入して組付け
可能で、一定量傾斜可能となるよう微小隙間をもって嵌
合保持され、自重を受面3fにて支持された構造として
いる。主軸受部材31aがハウジング3e内で回転する
ことを防止するため、ハウジング3eには回り止め3g
が設けられている。
The main bearing portion 31 has a main bearing member 31a. The bearing member 31a is provided with a slide bearing bush 31c inside the bearing holding member 31b so that the inner diameter surface thereof becomes a slide bearing surface, and the outside thereof. It has a cylindrical configuration in which a ridge 31d extending in the circumferential direction is formed. The ridge 31d is shown as an example provided at the axial center portion of the outer diameter of the bearing member or the bearing holding member, but it may be arranged above or below the ridge 31d, and the radius of curvature of the apex thereof is of an appropriate size. Stipulated in. A thrust bearing portion 34 is formed integrally with the bearing bush. The main bearing member 31a can be inserted into the housing 3e provided in the main frame 3 from above and assembled, is fitted and held with a minute gap so that it can be tilted by a certain amount, and its own weight is supported by the receiving surface 3f. It has a different structure. In order to prevent the main bearing member 31a from rotating in the housing 3e, the rotation stopper 3g is provided in the housing 3e.
Is provided.

【0028】副軸受部32は副軸受部材32aを有し、
該副軸受部材は軸受保持部材32b内に例えば軸受ブッ
シュ32cを設けて内面がすべり軸受面とされ、外径に
前記主軸受部同様に環状の突条部32dが設けられた円
筒状の構成とされている。
The sub bearing portion 32 has a sub bearing member 32a,
The sub-bearing member has a cylindrical structure in which a bearing bush 32c is provided in a bearing holding member 32b, an inner surface is a sliding bearing surface, and an annular ridge 32d is provided on an outer diameter like the main bearing portion. Has been done.

【0029】該副軸受部材32aは副フレーム8に設け
たハウジング8e内に上方より挿入して組付け可能で、
一定量傾斜可能となるよう微小隙間をもって嵌合保持さ
れ、自重を受面8fにて支持された構造としている。副
軸受部材32aがハウジング8e内で回転することを防
止するため、副フレーム8のハウジング8eには回り止
め8gが設けられている。
The sub bearing member 32a can be assembled by inserting it into the housing 8e provided in the sub frame 8 from above.
It is structured such that it is fitted and held with a minute gap so that it can be tilted by a certain amount, and its own weight is supported by the receiving surface 8f. In order to prevent the sub bearing member 32a from rotating in the housing 8e, the housing 8e of the sub frame 8 is provided with a rotation stopper 8g.

【0030】スクロール圧縮機の組立は、まずクランク
軸6等を部組みした主フレーム3のハウジング3eの軸
心と、あらかじめ密閉容器14に固定した電動機ステー
ター7aの軸心とが一致するように、主フレーム3を位
置決めして密閉容器14に溶接して固定される。
In the assembly of the scroll compressor, first, the axis of the housing 3e of the main frame 3 in which the crankshaft 6 and the like are assembled is aligned with the axis of the motor stator 7a fixed to the hermetically sealed container 14 in advance. The main frame 3 is positioned and welded and fixed to the closed container 14.

【0031】フレーム3と電動機ステーター7aを位置
決めする工程において、電動機7のステーター7aとロ
ーター7bは正しい位置にセットされる。またこの工程
において、主軸受部31の主軸受部材31aは主フレー
ム3のハウジング3e内に一定量傾斜可能となるよう微
小間隙をもって嵌合保持されているため、主軸受部材3
1aは適度に姿勢を変え、クランク軸6に対して片当り
することなくセットされる。一方副軸受部32について
は、副フレーム支え10を密閉容器14に圧入して固定
後、副フレーム支え10に副フレーム8を組付けること
により組立てられる。ここで、副フレーム支え10は必
ずしも主フレーム3に対して正しい位置関係には組付け
られないが、副フレーム8は前記のように副フレーム支
え10に対し径方向にスライド可能となっており、副フ
レーム8は主フレーム3に対して径方向の位置合わせが
でき、主フレーム3に位置決めした位置にて、数本のボ
ルトにて副フレーム支え10に固定される。この工程に
て、副軸受部32の副軸受部材32aは副フレーム8の
ハウジング8e内に一定量傾斜可能となるよう微小間隙
をもって嵌合保持されているので、副軸受部材32aは
クランク軸6に対して適度に姿勢を変えることができ、
クランク軸6に片当りすることなく、正しい状態でセッ
トされる。
In the step of positioning the frame 3 and the electric motor stator 7a, the stator 7a and the rotor 7b of the electric motor 7 are set at correct positions. Further, in this process, the main bearing member 31a of the main bearing portion 31 is fitted and held in the housing 3e of the main frame 3 with a minute gap so that the main bearing member 31a can be tilted by a certain amount.
1a changes its posture appropriately and is set without hitting the crankshaft 6 in one direction. On the other hand, the sub-bearing portion 32 is assembled by press-fitting the sub-frame support 10 into the closed container 14 and fixing the sub-frame support 10 and then assembling the sub-frame 8 to the sub-frame support 10. Here, the sub-frame support 10 is not necessarily assembled in the correct positional relationship with the main frame 3, but the sub-frame 8 is slidable in the radial direction with respect to the sub-frame support 10 as described above. The sub-frame 8 can be aligned in the radial direction with respect to the main frame 3, and is fixed to the sub-frame support 10 with a few bolts at a position positioned on the main frame 3. In this step, the sub-bearing member 32a of the sub-bearing portion 32 is fitted and held in the housing 8e of the sub-frame 8 with a minute gap so that the sub-bearing member 32a can be tilted by a certain amount. In contrast, you can change your posture appropriately,
The crankshaft 6 is set in a correct state without hitting it.

【0032】次に、上述した本発明の実施例の動作を説
明する。
Next, the operation of the above-described embodiment of the present invention will be described.

【0033】電動機7に外部より電気が供給されると、
電動機ローター7bが回転し、これに伴ってクランク軸
6が回転する。この結果旋回スクロール2は、オルダム
リング5の介在により旋回運動して、冷媒ガスが吸入口
16から吸入ポート1cを通り流入し、圧縮室に取込ま
れ、旋回スクロール2の運動に伴って冷媒ガスは圧縮さ
れ、高圧になった冷媒ガスは吐出ポート1dより固定ス
クロール上部空間に吐出される。この圧縮動作中、適当
に昇圧された冷媒ガスは中間孔2eを介して背圧室9の
内側の空間9aに充満する。起動待機時、旋回スクロー
ル2は主フレーム台座部3aに支持された状態のため、
内側空間9aは閉じられた状態にあり、内側の空間9a
は速やかに所定の圧力まで上昇し旋回スクロール2を押
上げ始める。旋回スクロール端板2aは主フレーム3の
第差部3aと固定スクロール1に挟持されているため、
旋回スクロール2は起動開始時に傾いたりしないで、固
定スクロール1に押付けられ、背圧室の外側空間9bも
所定の圧力まで上昇する。運転の経過により密閉容器1
4内の圧力(吐出圧力)は上昇し、シール部材4の内側
の空間はこの吐出圧力に保持される。このシール部材1
4の内側の吐出圧力と背圧室9内圧力の合力が旋回スク
ロール2を固定スクロール1に押付けるスラスト力とし
て作用する。
When electric power is supplied to the electric motor 7 from the outside,
The electric motor rotor 7b rotates, and the crankshaft 6 rotates accordingly. As a result, the orbiting scroll 2 orbits due to the intervention of the Oldham ring 5, the refrigerant gas flows from the suction port 16 through the suction port 1c, is taken into the compression chamber, and is accompanied by the movement of the orbiting scroll 2. Is compressed and the high-pressure refrigerant gas is discharged from the discharge port 1d to the upper space of the fixed scroll. During this compression operation, the appropriately pressurized refrigerant gas fills the space 9a inside the back pressure chamber 9 through the intermediate hole 2e. Since the orbiting scroll 2 is in a state of being supported by the main frame pedestal portion 3a at the time of standby for activation,
The inner space 9a is in a closed state, and the inner space 9a
Rapidly rises to a predetermined pressure and starts pushing up the orbiting scroll 2. Since the orbiting scroll end plate 2a is sandwiched between the fixed portion 1 and the third difference portion 3a of the main frame 3,
The orbiting scroll 2 is pressed against the fixed scroll 1 without tilting at the start of activation, and the outer space 9b of the back pressure chamber also rises to a predetermined pressure. Closed container 1 depending on the progress of operation
The pressure in 4 (discharge pressure) rises, and the space inside the seal member 4 is maintained at this discharge pressure. This seal member 1
The resultant force of the discharge pressure inside 4 and the pressure inside the back pressure chamber 9 acts as a thrust force that presses the orbiting scroll 2 against the fixed scroll 1.

【0034】この旋回スクロール2に対するスラスト力
が、圧縮室内のガス圧によって生じる全スラスト力の大
きさよりも上回るため、旋回スクロール2は固定スクロ
ール1側に押付けられ安定した圧縮動作が行われる。な
お、必要なスラスト力を得るため、背圧室9の中間圧力
を低めの圧力とし、シール部材4の内径を大きくするこ
とも可能である。
Since the thrust force on the orbiting scroll 2 exceeds the magnitude of the total thrust force generated by the gas pressure in the compression chamber, the orbiting scroll 2 is pressed against the fixed scroll 1 side and a stable compression operation is performed. In order to obtain the required thrust force, it is possible to make the intermediate pressure of the back pressure chamber 9 a low pressure and increase the inner diameter of the seal member 4.

【0035】吐出ポート1dから固定スクロール1の上
部空間に吐出された高圧ガスは、主フレーム3の側面の
ガス通路3dを通り、電動機7の上部空間に流入し、そ
の一部はガスガイド18に導かれ、電動機7側面に設け
た通路から電動機7下部空間に導かれ、再び電動機7の
上部空間に流入し、ここで、冷媒ガスは電動機7を冷却
すると共に、冷媒ガス中の潤滑油は分離されて冷媒ガス
は吐出口17から圧縮機外へ流出する。一部の潤滑油は
いわゆる油上がりとなって冷媒ガスと共に機外に流出す
るが、再び冷媒ガスとともにスクロール圧縮機の吸入口
16にもどる。一方、分離された潤滑油は重力によって
下方に流れ落ち密閉容器14の下部の潤滑油部13に到
達する。
The high-pressure gas discharged from the discharge port 1d into the upper space of the fixed scroll 1 flows into the upper space of the electric motor 7 through the gas passage 3d on the side surface of the main frame 3, and a part of the gas flows into the gas guide 18. The refrigerant gas is guided to the lower space of the electric motor 7 from the passage provided on the side surface of the electric motor 7 and flows into the upper space of the electric motor 7 again, where the refrigerant gas cools the electric motor 7 and the lubricating oil in the refrigerant gas is separated. The refrigerant gas is discharged from the discharge port 17 to the outside of the compressor. Some of the lubricating oil becomes so-called oil rise and flows out of the machine together with the refrigerant gas, but returns to the suction port 16 of the scroll compressor together with the refrigerant gas again. On the other hand, the separated lubricating oil flows downward due to gravity and reaches the lubricating oil portion 13 below the closed container 14.

【0036】潤滑油は吐出圧力と背圧室圧力の差圧によ
り潤滑油部13よりクランク軸6に固定した給油パイプ
21よりクランク軸6内の給油路22を通り旋回スクロ
ール端板2aに設けた給油路2fを通り端板面に給油さ
れる。ここで旋回スクロール端板面2aの給油出口はク
ランク軸6内の給油路22に対して十分給油面積を絞ら
れているのでクランク軸6内の給油路22内では油圧の
低下は発生しない。前記差圧により潤滑油は給油路22
内を上昇するが、給油路22はクランク軸6の回転中心
に対して偏心して設けられているので、給油路22内で
遠心ポンプ作用を受けて潤滑油の油圧は上昇する。
Lubricating oil is provided on the orbiting scroll end plate 2a through the oil supply pipe 21 fixed to the crankshaft 6 from the lubricating oil portion 13 by the differential pressure between the discharge pressure and the back pressure chamber pressure, through the oil supply passage 22 in the crankshaft 6. Oil is supplied to the end plate surface through the oil supply passage 2f. Here, since the oil supply outlet of the orbiting scroll end plate surface 2a has a sufficiently small oil supply area with respect to the oil supply passage 22 in the crankshaft 6, the hydraulic pressure does not decrease in the oil supply passage 22 in the crankshaft 6. The lubricating oil is supplied to the oil supply passage 22 by the differential pressure.
However, since the oil supply passage 22 is provided eccentrically with respect to the center of rotation of the crankshaft 6, the oil pressure of the lubricating oil increases due to the centrifugal pump action in the oil supply passage 22.

【0037】主軸受部31、旋回軸受部30はこの給油
路22が径方向に分岐した給油路で更に遠心ポンプ作用
を得た潤滑油が給油される。
The main bearing portion 31 and the slewing bearing portion 30 are oil supply passages radially branched from the oil supply passage 22 to which lubricating oil having a centrifugal pump action is supplied.

【0038】旋回軸受部30、主軸受部31に給油され
た潤滑油は主フレーム3に設けた排油孔19から排油パ
イプ20に導かれ密閉容器14内の内壁面にそって重力
により落下する。
The lubricating oil supplied to the orbiting bearing portion 30 and the main bearing portion 31 is guided to the oil drainage pipe 20 through the oil drainage hole 19 provided in the main frame 3 and falls by gravity along the inner wall surface of the closed container 14. To do.

【0039】端板面を給油した潤滑油は背圧室9の外側
空間9bに排出される。この空間にはオルダムリング5
が配置されており、このオルダムリング5を潤滑し、旋
回スクロール2と主フレーム台座3aの隙間を通り内側
の空間9aに移動した後中間孔2eを通って圧縮室に入
り、冷媒ガスとともに吐出ポート1dから吐出される。
ここで、主軸受部31、旋回軸受部30を給油した潤滑
油は冷媒ガス通路と別の経路にて密閉容器14下部へ落
下するため、冷媒ガスに混合し機外に流出することな
く、密閉容器14下部の潤滑油部13に循環する。冷媒
ガスを圧縮することによる荷重および旋回スクロール2
などの遠心力による荷重が旋回軸受30を介し、クラン
ク軸6のクランク部6aに作用し、この荷重を主軸受部
31と副軸受部32で支持する。この荷重は主軸受部3
1と副軸受部32の間の内側に作用し、いわゆる片持荷
重として作用するので、クランク軸6は軸受部に対して
傾いた状態で荷重を支持する。このため、クランク軸6
は軸受ギャップ内で傾く。しかしながら、主軸受部材3
1aは、主フレーム3のハウジング3e内に一定量傾斜
可能となるよう微小隙間をもって嵌合保持されているた
め、主軸受部材31aは、突条31dを支点としてクラ
ンク軸の傾斜に合わせて適度に姿勢を変えることができ
るので、クランク軸6に対して片当りすることなく、ま
た副軸受部材32aは副フレーム8のハウジング8e内
に一定量傾斜可能となるよう微小隙間をもって嵌合保持
されているので、副軸受部32aは、突条32dを支点
としてクランク軸6の傾斜に合わせて適度に姿勢を変え
ることができるので、クランク軸6に対して片当りする
ことはない。
The lubricating oil supplied to the end plate surface is discharged into the outer space 9b of the back pressure chamber 9. Oldham ring 5 in this space
Are arranged, lubricate the Oldham ring 5, move to the inner space 9a through the gap between the orbiting scroll 2 and the main frame pedestal 3a, then enter the compression chamber through the intermediate hole 2e, and discharge port together with the refrigerant gas. It is discharged from 1d.
Here, since the lubricating oil that has supplied the main bearing portion 31 and the slewing bearing portion 30 drops to the lower portion of the closed container 14 through a path different from the refrigerant gas passage, the lubricating oil is sealed without being mixed with the refrigerant gas and flowing out of the machine. It circulates to the lubricating oil section 13 below the container 14. Load due to compression of refrigerant gas and orbiting scroll 2
The load due to the centrifugal force acts on the crank portion 6a of the crankshaft 6 through the orbiting bearing 30, and the main bearing portion 31 and the sub bearing portion 32 support the load. This load is applied to the main bearing 3
Since it acts on the inner side between 1 and the sub bearing portion 32 and acts as a so-called cantilever load, the crankshaft 6 supports the load in a state of being inclined with respect to the bearing portion. Therefore, the crankshaft 6
Tilts in the bearing gap. However, the main bearing member 3
Since 1a is fitted and held in the housing 3e of the main frame 3 with a minute gap so that it can be tilted by a certain amount, the main bearing member 31a is appropriately adjusted according to the inclination of the crankshaft with the ridge 31d as a fulcrum. Since the posture can be changed, the auxiliary bearing member 32a is fitted and held in the housing 8e of the auxiliary frame 8 with a minute gap so that the auxiliary bearing member 32a can be tilted by a certain amount without a single contact with the crankshaft 6. Therefore, the sub-bearing portion 32a can appropriately change its posture in accordance with the inclination of the crankshaft 6 with the ridge 32d as a fulcrum, so that it does not hit the crankshaft 6 in one direction.

【0040】主軸受部材31aは回り止め3gによりハ
ウジング3e内での回転を阻止されているので、嵌合面
が摩耗することはなく、適正な調芯機能が保持される。
また、副軸受部材32aは回り止め8gによりハウジン
グ8e内での回転を阻止されているので、嵌合面が摩耗
することはなく、適正な調芯機能が保持される。
Since the main bearing member 31a is prevented from rotating in the housing 3e by the rotation stopper 3g, the fitting surface is not worn and the proper centering function is maintained.
Further, since the sub bearing member 32a is prevented from rotating in the housing 8e by the rotation stopper 8g, the fitting surface is not worn and the proper alignment function is maintained.

【0041】また、旋回軸受部と主軸受部と副軸受部の
いずれかまたは全ての軸受部に調芯機構を持たせるとと
もに、副軸受部を支持するハウジングを密閉容器に対し
て径方向の移動を可能としたので、密閉容器および密閉
容器に取付けられた副フレーム支えの組立精度によらず
主軸受部と副軸受部の軸芯を組立時に正しくセットでき
るので、軸受部の片当りの発生しないスクロール圧縮機
の軸受構造を得ることができる。
Further, any or all of the orbiting bearing portion, the main bearing portion and the sub bearing portion are provided with a centering mechanism, and the housing supporting the sub bearing portion is moved in the radial direction with respect to the closed container. Since the shaft center of the main bearing part and the sub bearing part can be set correctly during assembly regardless of the assembly accuracy of the closed container and the sub frame support attached to the closed container, there is no uneven contact of the bearing part. The bearing structure of the scroll compressor can be obtained.

【0042】図3は本発明のスクロール圧縮機の他の実
施例で旋回軸受部の詳細を示す。
FIG. 3 shows the details of the slewing bearing portion in another embodiment of the scroll compressor of the present invention.

【0043】図3に示す実施例は、旋回軸受部30に調
芯構造を採用したものであり、旋回軸受部の構造以外は
図1に示す第一の実施例と同一構造である。
The embodiment shown in FIG. 3 employs a centering structure for the slewing bearing portion 30, and has the same structure as the first embodiment shown in FIG. 1 except for the structure of the slewing bearing portion.

【0044】図3の実施例において、旋回軸受部30は
旋回軸受部材30aを有し、該軸受部材30aは軸受保
持部材31bの内側に例えばすべり軸受ブッシュ30c
を設けることにより内径面をすべり軸受面とされ、その
外側に前記主軸受部同様に突条30dを形成した円筒状
に構成されている。
In the embodiment of FIG. 3, the slewing bearing portion 30 has a slewing bearing member 30a, and the bearing member 30a is, for example, a slide bearing bush 30c inside the bearing holding member 31b.
The inner diameter surface is made to be a sliding bearing surface by the provision of, and a ridge 30d is formed on the outer side thereof similarly to the main bearing portion to form a cylindrical shape.

【0045】該旋回軸受部材30aは旋回スクロール2
に設けたハウジング2hに挿入して組付け可能で、一定
量傾斜可能となるよう微小隙間をもって嵌合保持されて
いる。
The orbiting bearing member 30a is the orbiting scroll 2
It can be inserted and assembled in the housing 2h provided in the above, and is fitted and held with a minute gap so that it can be tilted by a certain amount.

【0046】ハウジング2hには、旋回軸受部材30a
がハウジング2h内で回転することを防止するためと旋
回軸受部材30aの自重を支持するために回り止め2g
が設けられている。該回り止め2gは旋回軸受部30を
ハウジング2h内に挿入した後組付けられる。
The housing 2h includes a slewing bearing member 30a.
2g for preventing rotation of the rotating bearing member 30a in the housing 2h and for supporting the own weight of the slewing bearing member 30a.
Is provided. The detent 2g is assembled after the swivel bearing portion 30 is inserted into the housing 2h.

【0047】本実施例のスクロール圧縮機は第一の実施
例と同様に組立てられる。
The scroll compressor of this embodiment is assembled similarly to the first embodiment.

【0048】本実施例の圧縮動作および給油動作等は第
一の実施例と同じなので説明を省略する。
The compression operation, oil supply operation and the like of this embodiment are the same as those of the first embodiment, so the description thereof will be omitted.

【0049】第一の実施例と同様に冷媒ガスを圧縮する
ことによる荷重および旋回スクロール2などの遠心力に
よる荷重が旋回軸受部30を介し、クランク軸6のクラ
ンク部6aに作用し、この荷重を主軸受部31と副軸受
部32で支持する。この荷重は主軸受部31と副軸受部
32の感の外側に作用し、いわゆる片持荷重として作用
するので、クランク軸6は軸受部に対して傾いた状態で
荷重を支持する。このため、クランク軸6は軸受ギャッ
プ内で傾く。また、過渡時に旋回スクロール2がフレー
ム3と固定スクロール1の挟持された隙間内で傾斜する
こともある。しかしながら、かかる場合においても旋回
軸受部部材30aはハウジング2h内に一定量傾斜可能
となるよう微小隙間をもって嵌合保持されているため、
旋回軸受部材30aは、軸受保持部材30bの中央凸を
支点として適度に姿勢を変えることができ、旋回軸受材
30aの内面はクランク軸6に対して片当りせず、回り
止め2gによりハウジング2h内での回転を阻止されて
いるので、嵌合面が摩耗することはなく、適正な調芯機
能が保持される。
Similar to the first embodiment, the load due to compression of the refrigerant gas and the load due to the centrifugal force such as the orbiting scroll 2 act on the crank portion 6a of the crankshaft 6 via the orbiting bearing portion 30, and this load. Are supported by the main bearing portion 31 and the sub bearing portion 32. This load acts outside the feeling of the main bearing portion 31 and the sub bearing portion 32, and acts as a so-called cantilever load, so that the crankshaft 6 supports the load in a state of being inclined with respect to the bearing portion. Therefore, the crankshaft 6 tilts in the bearing gap. Further, during a transition, the orbiting scroll 2 may tilt in the gap between the frame 3 and the fixed scroll 1. However, even in such a case, since the slewing bearing member 30a is fitted and held in the housing 2h with a minute gap so that it can be tilted by a certain amount,
The slewing bearing member 30a can appropriately change its posture with the center convex of the bearing holding member 30b as a fulcrum, and the inner surface of the slewing bearing member 30a does not hit the crankshaft 6 one-sided, and the rotation stopper 2g prevents the inside of the housing 2h. Since the rotation is blocked, the fitting surface is not worn and the proper alignment function is maintained.

【0050】図4は本発明のスクロール圧縮機械の他の
実施例で軸受部の詳細を示す。
FIG. 4 shows details of the bearing portion in another embodiment of the scroll compression machine of the present invention.

【0051】図4に示す実施例は、第一の実施例が主軸
受部31および副軸受部32を形成する軸受部材として
その軸受部材又は軸受保持部材の外径部に突条を有す円
筒形状とし、軸受部材を保持するハウジングを円筒形状
としたことに対して、軸受部材の外径部を円筒形状と
し、軸受部材を保持すめるハウジングの形状として突条
を有する円筒形状としたことである。即ち主軸受部31
の主軸受部材31aは、内側に軸受ブッシュ31cを設
けた円筒形状の軸受保持部材31bを有し、軸受部材3
1aを嵌合するハウジング3eはその内径に突条3kが
形成された円筒形状とされている。また副軸受部材32
aは内面に軸受ブッシュ32cを設けた軸受保持部材3
2bを有し、副軸受部材32aを嵌合するハウジング8
eに突条8kが形成されている。即ち軸受部材を内面を
すべり軸受面とし軸受部材を保持するハウジング内に軸
受部材を微小隙間をもって嵌合して軸受部を構成してい
ることは前記実施例と同じである。本実施例の動作は、
第一の実施例と同様あり、説明を省略する。
In the embodiment shown in FIG. 4, the first embodiment is a cylinder having a ridge on the outer diameter portion of the bearing member or the bearing holding member as a bearing member forming the main bearing portion 31 and the sub bearing portion 32. In contrast to the cylindrical shape of the housing that holds the bearing member, the outer diameter portion of the bearing member is cylindrical and the shape of the housing that holds the bearing member is a cylindrical shape having a ridge. . That is, the main bearing portion 31
The main bearing member 31a has a cylindrical bearing holding member 31b provided with a bearing bush 31c on the inner side thereof.
The housing 3e into which the 1a is fitted has a cylindrical shape having a protrusion 3k formed on the inner diameter thereof. In addition, the auxiliary bearing member 32
a is a bearing holding member 3 having a bearing bush 32c on its inner surface.
Housing 8 having 2b and fitted with the sub bearing member 32a
The protrusion 8k is formed on e. That is, as in the above-described embodiment, the bearing member has a sliding bearing surface, and the bearing member is fitted in a housing that holds the bearing member with a minute gap therebetween. The operation of this embodiment is
Since it is similar to the first embodiment, the explanation is omitted.

【0052】図5は他の実施例で軸受部の詳細を示す。FIG. 5 shows details of the bearing portion in another embodiment.

【0053】図5に示す実施例は、主軸受部31は主フ
レーム3と一体に形成したすべり軸受ブッシュ31bに
より構成し、副軸受部32は副軸受部材32aを有し、
該副軸受部材は内面をすべり軸受ブッシュ32cとした
軸受保持部材32bを有し、外径部をに突条を有する円
筒形状とし、副軸受部材32aを保持するハウジング8
eを円筒形状とし、ハウジング8eの円筒面内に副軸受
部材32aを微小隙間をもって嵌合して軸受部を構成し
ている。他の構成は第一の実施例と同じである。なお本
実施例では副軸受部32の内面をすべり軸受面とし外径
部を中央に凸部を有す円筒形状とし軸受部を保持するハ
ウジング8eを円筒形状としているが、外径部を円筒形
状とし軸受部を保持するハウジングの中央部を内径側に
凸とした部分を有する円筒形状としても良い。
In the embodiment shown in FIG. 5, the main bearing portion 31 is composed of a slide bearing bush 31b formed integrally with the main frame 3, and the sub bearing portion 32 has a sub bearing member 32a.
The sub-bearing member has a bearing holding member 32b whose inner surface is a sliding bearing bush 32c, and has a cylindrical shape having a ridge on the outer diameter portion, and holds the sub-bearing member 32a.
e has a cylindrical shape, and the auxiliary bearing member 32a is fitted in the cylindrical surface of the housing 8e with a minute gap to form a bearing portion. Other configurations are the same as those in the first embodiment. In this embodiment, the inner surface of the sub-bearing portion 32 is a sliding bearing surface, the outer diameter portion has a cylindrical shape having a convex portion in the center, and the housing 8e for holding the bearing portion has a cylindrical shape, but the outer diameter portion has a cylindrical shape. Alternatively, the housing for holding the bearing may have a cylindrical shape having a central portion having a convex portion on the inner diameter side.

【0054】本実施例の組立方法は第一の実施例に準じ
て実施される。
The assembling method of this embodiment is carried out according to the first embodiment.

【0055】スクロール圧縮機の組立は、まずクランク
軸6等を部組みした主フレーム3に一体に形成した主軸
受部31の軸心と、あらかじめ密閉容器14に固定した
電動機ステーター7aの軸心とが一致するように、主フ
レーム3を位置決めし密閉容器14に溶接して固定され
る。フレーム3と電動機ステーター7aを位置決めする
工程において、電動機7のステーター7aとローター7
bは正しい位置にセットされる。一方副軸受部32につ
いては、副フレーム支え10を密閉容器14に圧入して
固定後、副フレーム支え10に副フレーム8を組付ける
ことにより組立てられる。ここで、副フレーム支え10
に副フレーム8を組付けることにより組立てられる。こ
こで、副フレーム支え10は必ずしも主フレーム3に対
して正しい位置関係には組付けられないが、副フレーム
8は副フレーム支え10に対し径方向のスライド可能と
なっており、径方向の位置合わせができ、副フレーム8
は主フレーム3に位置決めした位置にて、数本のボルト
にて副フレーム支え10に固定される。この工程にて、
主軸受部31とクランク軸6が正しい位置関係となるよ
うに副フレーム8が位置決めされる。副軸受部材32a
は副フレーム8のハウジング8e内に一定量傾斜可能と
なるよう微小隙間をもって嵌合保持されているので、副
軸受部材32aはクランク軸6に対して適度に姿勢を変
えることができ、クランク軸6に片当りすることなく、
正しい状態でセットされる。
In the assembly of the scroll compressor, first, the shaft center of the main bearing portion 31 integrally formed on the main frame 3 into which the crankshaft 6 and the like are assembled and the shaft center of the electric motor stator 7a fixed to the hermetically sealed container 14 in advance. The main frame 3 is positioned and welded and fixed to the closed container 14 so that In the process of positioning the frame 3 and the electric motor stator 7a, the stator 7a and the rotor 7 of the electric motor 7 are
b is set in the correct position. On the other hand, the sub-bearing portion 32 is assembled by press-fitting the sub-frame support 10 into the closed container 14 and fixing the sub-frame support 10 and then assembling the sub-frame 8 to the sub-frame support 10. Here, the sub-frame support 10
It is assembled by assembling the sub-frame 8 on. Here, the sub-frame support 10 is not necessarily assembled in the correct positional relationship with the main frame 3, but the sub-frame 8 is slidable in the radial direction with respect to the sub-frame support 10, and the sub-frame support 10 is positioned in the radial direction. Can be fitted, sub-frame 8
Is fixed to the sub-frame support 10 with a few bolts at the position where it is positioned on the main frame 3. In this process,
The sub frame 8 is positioned so that the main bearing portion 31 and the crankshaft 6 have a correct positional relationship. Sub bearing member 32a
Is fitted and held in the housing 8e of the sub-frame 8 with a minute gap so that the sub-bearing member 32a can be appropriately tilted with respect to the crankshaft 6, so that the crankshaft 6 can be appropriately tilted. Without hitting
It is set in the correct state.

【0056】次に動作について説明する。第一の実施例
と共通する部分の説明は省略する。冷媒ガスを圧縮する
ことによる荷重および旋回スクロール2などの遠心力に
よる荷重が旋回軸受30を介し、クランク軸6のクラン
ク部6aに作用し、この荷重を主軸受部31と副軸受部
32で支持する。この荷重は主軸受部31と副軸受部間
32の外側に作用し、いわゆる片持荷重として作用する
ので、クランク軸6は軸受部に対して傾いた状態で荷重
を支持する。このため、クランク軸6は軸受ギャップ内
で傾く。副受部32は副フレーム8のハウジング8e内
に一定量傾斜可能となるよう微小隙間をもって嵌合保持
されているので、副軸受部32はクランク軸6の傾斜に
合わせて適度に姿勢を変えることができるので、クラン
ク軸6に対して片当りすることはない。主軸受部31は
組立時にクランク軸6に対し片当りしない正しい位置に
セットされており、また電動機を挟んで主軸受部31と
副軸受部32で支持されているため、両軸受間距離が長
くとれていることから軸受ギャップ内のクランク軸の傾
きはある程度少なくでき、第一の実施例に対してすべり
軸受部の寸法に余裕をとり、軸受自体の耐負荷能力を上
げておくことは必要であるが、第一の実施例よりも簡便
な構造でスクロール圧縮機の軸受構造を実現できる。
Next, the operation will be described. Descriptions of parts common to the first embodiment are omitted. The load due to the compression of the refrigerant gas and the load due to the centrifugal force such as the orbiting scroll 2 act on the crank portion 6a of the crankshaft 6 via the orbiting bearing 30, and the load is supported by the main bearing portion 31 and the sub bearing portion 32. To do. This load acts on the outer side between the main bearing portion 31 and the sub bearing portion 32 and acts as a so-called cantilever load, so that the crankshaft 6 supports the load in a state of being inclined with respect to the bearing portion. Therefore, the crankshaft 6 tilts in the bearing gap. Since the sub receiving portion 32 is fitted and held in the housing 8e of the sub frame 8 with a small gap so that the sub receiving portion 32 can be tilted by a certain amount, the sub bearing portion 32 should be appropriately changed in posture according to the inclination of the crank shaft 6. Therefore, the crankshaft 6 will not be hit against one side. Since the main bearing portion 31 is set at a correct position so that it does not hit the crankshaft 6 in one direction at the time of assembly, and is supported by the main bearing portion 31 and the sub bearing portion 32 with the electric motor interposed therebetween, the distance between both bearings is long. Because of this, the inclination of the crankshaft in the bearing gap can be reduced to some extent, and it is necessary to increase the bearing capacity of the bearing itself by allowing a margin for the dimensions of the sliding bearing section compared to the first embodiment. However, the bearing structure of the scroll compressor can be realized with a simpler structure than the first embodiment.

【0057】上記実施例は副軸受部32側に調芯構造を
採用したものであるが、主軸受部31側に調芯構造を採
用した場合についても、組み立てによる片当りは防止で
き、第一の実施例に対して副軸受部32のすべり軸受部
寸法に余裕をとり、軸受自体の耐負荷能力を上げておく
ことは必要であるが、第一の実施例よりも簡便な構造で
スクロール圧縮機の軸受構造を実現できる。
In the above-described embodiment, the centering structure is adopted on the side of the sub bearing 32. However, even when the centering structure is adopted on the side of the main bearing 31, the one-sided contact due to assembly can be prevented. It is necessary to allow a margin for the size of the sliding bearing portion of the sub-bearing portion 32 and increase the load bearing capacity of the bearing itself as compared with the first embodiment, but the scroll compression is simpler than that of the first embodiment. The bearing structure of the machine can be realized.

【0058】図6は本発明のスクロール圧縮機の他の実
施例で、図7はその軸受部の詳細を示す。
FIG. 6 shows another embodiment of the scroll compressor of the present invention, and FIG. 7 shows the details of the bearing portion thereof.

【0059】図6の実施例は図1の実施例に対し、主軸
受部材31aの軸受保持部材31bの外径部に設けた突
条31dと、副軸受部材32aの軸受保持部材32bの
外径部に設けた突条32dの位置を後述のように設定す
るものであり、他の構造は同じである。図7にその詳細
を示している。該突条は軸受荷重を支持する支点となる
が、主軸受部31の支点を旋回軸受部30に接近させる
一方、主軸受部31と副軸受部32の支点間距離(L)
を遠ざけた構造としたものである。
The embodiment shown in FIG. 6 is different from the embodiment shown in FIG. 1 in that the protrusion 31d provided on the outer diameter portion of the bearing holding member 31b of the main bearing member 31a and the outer diameter of the bearing holding member 32b of the auxiliary bearing member 32a. The position of the protrusion 32d provided on the section is set as described later, and the other structures are the same. The details are shown in FIG. The ridge serves as a fulcrum for supporting a bearing load, but the fulcrum of the main bearing portion 31 is brought closer to the slewing bearing portion 30, while the fulcrum distance (L) between the main bearing portion 31 and the sub bearing portion 32 is increased.
It is a structure that keeps away.

【0060】図1の実施例に対し、本実施例の場合は、
主軸受部31と副軸受部32の距離を大として荷重を少
なくでき、軸受損失の低減などが可能となる。
In contrast to the embodiment of FIG. 1, in the case of this embodiment,
The load can be reduced by increasing the distance between the main bearing portion 31 and the sub bearing portion 32, and the bearing loss can be reduced.

【0061】なお、以上の各実施例で説明した他に本発
明は、旋回軸受部材、主軸受部材、副軸受部材と、これ
らを保持するハウジングとは、その何れかに突条を設
け、他方は円筒形状とする種々の組合せが可能である。
In addition to the above-described embodiments, in the present invention, the slewing bearing member, the main bearing member, the sub-bearing member, and the housing holding them are provided with protrusions on any one of them. Various combinations of cylindrical shapes are possible.

【0062】[0062]

【発明の効果】以上説明したように本発明は、クランク
軸を電動機を挟んでクランク部に近い主軸受部とクラン
ク部より遠い副軸受部で支持し軸受間距離を大きくした
ので軸受ギャップ内のクランク軸の傾きを小さくできる
とともに、旋回軸受部と主軸受部と副軸受部のいずれか
または全ての軸受部を、軸受部とこれを微小隙間で保持
するハウジングにより構成したので、軸受部に運転中の
クランク軸の傾きに追従した調芯機構が得られるので、
片当りのない耐負荷能力の高く信頼性の高いスクロール
圧縮機の軸受構造を得ることができる。
As described above, according to the present invention, the crankshaft is supported by the main bearing portion close to the crank portion and the sub bearing portion farther from the crank portion with the electric motor interposed therebetween, and the inter-bearing distance is increased. Inclination of the crankshaft can be reduced, and any or all of the orbiting bearing, main bearing, and sub bearing are composed of the bearing and the housing that holds the bearing with a minute gap. Since a centering mechanism that follows the inclination of the inside crankshaft can be obtained,
It is possible to obtain a highly reliable bearing structure for a scroll compressor having a high load-bearing capacity with no uneven contact.

【0063】上記の旋回軸受、主軸受および副軸受の軸
受部の調芯機構として、軸受部材の外径部を中央凸と
し、軸受部材を保持するハウジングを円筒形状とし、ハ
ウジング内に軸受部材を挿入して微小隙間をもって嵌合
する構造としたので、組立容易の簡便な構造でかつ軸受
部材の外径部最大径を小さくできる調芯機構を得ること
ができる。また、他の構造として、軸受部材の外径部を
円筒形状とし、軸受部材を保持するハウジングの中央部
を内径側に凸とした円筒形状とし軸受部材を微小隙間を
もって嵌合する構造としたので、同じく、簡便な構造で
かつ軸受部材の外径部最大径を小さくできる調芯機構を
得ることができる。
As a centering mechanism for the bearing portions of the above-mentioned slewing bearing, main bearing and sub bearing, the outer diameter portion of the bearing member is convex in the center, the housing holding the bearing member is cylindrical, and the bearing member is provided in the housing. Since the structure is inserted and fitted with a minute gap, it is possible to obtain an aligning mechanism having a simple structure that is easy to assemble and capable of reducing the maximum outer diameter portion of the bearing member. Further, as another structure, the outer diameter portion of the bearing member is cylindrical, and the central portion of the housing that holds the bearing member is formed into a cylindrical shape with a convex inner diameter side so that the bearing member is fitted with a minute gap. Similarly, it is possible to obtain an aligning mechanism having a simple structure and capable of reducing the maximum outer diameter portion of the bearing member.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明によるスクロール圧縮機の第一の実施例
を示す図。
FIG. 1 is a diagram showing a first embodiment of a scroll compressor according to the present invention.

【図2】図1の軸受部の詳細を示す図。FIG. 2 is a diagram showing details of a bearing portion in FIG.

【図3】本発明の他の実施例の旋回軸受部の詳細を示す
図。
FIG. 3 is a diagram showing details of a slewing bearing portion according to another embodiment of the present invention.

【図4】本発明の他の実施例の主軸受と副軸受部の詳細
を示す図。
FIG. 4 is a diagram showing details of a main bearing and a sub bearing according to another embodiment of the present invention.

【図5】本発明の他の実施例の主軸受と副軸受部の詳細
を示す図。
FIG. 5 is a diagram showing details of a main bearing and a sub bearing according to another embodiment of the present invention.

【図6】本発明の更に他の実施例を示す図。FIG. 6 is a diagram showing still another embodiment of the present invention.

【図7】図6に示す実施例の軸受部の詳細を示す図。7 is a diagram showing details of a bearing portion of the embodiment shown in FIG.

【図8】従来のスクロール圧縮機の1例を示す図。FIG. 8 is a diagram showing an example of a conventional scroll compressor.

【符号の説明】[Explanation of symbols]

1…固定スクロール 1a…端板 1b…ラップ 1c…吸入ポー
ト 1d…吐出ポート 2…旋回スクロ
ール 2a…端板 2b…ラップ 2d…下端面 2e…中間孔 2f…給油路 2g…回り止め 2h…ハウジング 3…フレーム 3a…台座 3b…リング溝 3c…キー溝 3d…ガス通路 3e…ハウジング 3f…受面 3g…回り止め 4…シール部材 5…オルダムリング 6…クランク軸 6a…クランク部 6b…スラスト
受け部 7…電動機 7a…ステータ
ー 7b…ローター 8…副フレーム 8e…ハウジング 8f…受面 8g…回り止め 9…背圧室 10…副フレーム支え 11…主バラン
スウエイト 12…副バランスウエイト 13…潤滑油 14…密閉容器 a…胴部 16…吸入口 17…吐出口 18…ガスガイド 19…排油孔 20…排油パイプ 21…給油パイ
プ 22…給油路 30…旋回軸受
部 30a…旋回軸受部材 30b…軸受保
持部材 30c,31c,32c…すべり軸受ブッシュ 30d,31d,32d…突条 31…主軸受部 31a…主軸受部材 31b…軸受保
持部材 32…副軸受部 32a…副軸受
部材 32b…軸受保持部材 34…スラスト
軸受
DESCRIPTION OF SYMBOLS 1 ... Fixed scroll 1a ... End plate 1b ... Wrap 1c ... Suction port 1d ... Discharge port 2 ... Orbiting scroll 2a ... End plate 2b ... Wrap 2d ... Lower end face 2e ... Intermediate hole 2f ... Oil supply passage 2g ... Rotation stop 2h ... Housing 3 ... Frame 3a ... Pedestal 3b ... Ring groove 3c ... Key groove 3d ... Gas passage 3e ... Housing 3f ... Receiving surface 3g ... Rotation stop 4 ... Seal member 5 ... Oldham ring 6 ... Crank shaft 6a ... Crank part 6b ... Thrust receiving part 7 ... Electric motor 7a ... Stator 7b ... Rotor 8 ... Sub-frame 8e ... Housing 8f ... Receiving surface 8g ... Rotation stop 9 ... Back pressure chamber 10 ... Sub-frame support 11 ... Main balance weight 12 ... Sub-balance weight 13 ... Lubricating oil 14 ... Sealing Container a ... Body 16 ... Suction port 17 ... Discharge port 18 ... Gas guide 19 ... Oil drain hole 20 ... Oil drain pipe DESCRIPTION OF SYMBOLS 1 ... Oil supply pipe 22 ... Oil supply passage 30 ... Slewing bearing part 30a ... Slewing bearing member 30b ... Bearing holding member 30c, 31c, 32c ... Sliding bearing bush 30d, 31d, 32d ... Ridge 31 ... Main bearing part 31a ... Main bearing member Reference numeral 31b ... Bearing holding member 32 ... Sub bearing portion 32a ... Sub bearing member 32b ... Bearing holding member 34 ... Thrust bearing

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 F04C 29/02 351 F04C 29/02 351B (72)発明者 東條健司 静岡県清水市村松390番地 株式会社日立 製作所空調システム事業部内 (72)発明者 富田好勝 静岡県清水市村松390番地 株式会社日立 製作所空調システム事業部内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Reference number within the agency FI Technical indication location F04C 29/02 351 F04C 29/02 351B (72) Inventor Kenji Tojo 390 Muramatsu, Shimizu, Shizuoka Stocks Shares (72) Inventor Yoshikatsu Tomita 390 Muramatsu, Shimizu City, Shizuoka Prefecture, Hitachi, Ltd. Air Conditioning Systems Division, Hitachi, Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 固定スクロールと旋回スクロールとを組
合せ、旋回スクロールの旋回軸受部をクランク軸のクラ
ンク部に連結し、クランク軸を電動機を挟んでクランク
部に近い主軸受部とクランク部より遠い副軸受部で支持
し、旋回スクロールをクランク軸に固定した電動機ロー
ター及びこれに対向するステーターにて駆動するスクロ
ール圧縮機において、前記の旋回軸受部と主軸受部と副
軸受部のいずれかまたは全ての軸受部を、軸受部材とこ
の軸受部材を保持するハウジングにより構成し、軸受部
材の内径面をすべり軸受面とし、軸受部材はハウジング
に微小隙間を持って嵌合し、この微小隙間内でのクラン
ク軸の傾きに追従して軸受部材を傾斜可能としたことを
特徴とするスクロール圧縮機。
1. A fixed scroll and an orbiting scroll are combined, the orbiting bearing part of the orbiting scroll is connected to a crank part of a crankshaft, and the crankshaft is sandwiched by an electric motor. In a scroll compressor that is supported by bearings and has a rotating scroll fixed to a crankshaft and a scroll compressor that is driven by a stator that faces the rotating rotor, any or all of the above-mentioned orbiting bearings, main bearings, and auxiliary bearings The bearing is composed of a bearing member and a housing that holds this bearing member, and the inner diameter surface of the bearing member is a sliding bearing surface, and the bearing member is fitted in the housing with a minute gap, and the crank A scroll compressor characterized in that a bearing member can be tilted to follow the shaft tilt.
【請求項2】 請求項1記載のスクロール圧縮機におい
て、軸受部材を内面をすべり軸受面とし外径部を突条を
有する円筒形状とし、軸受部材を保持するハウジングを
円筒形状とし、ハウジングの円筒面内に軸受部材を微小
隙間をもって嵌合して軸受部を構成していることを特徴
とするスクロール圧縮機。
2. The scroll compressor according to claim 1, wherein the bearing member has a cylindrical shape with an inner surface having a sliding bearing surface and an outer diameter portion having a protrusion, and the housing holding the bearing member has a cylindrical shape. A scroll compressor characterized in that a bearing member is formed by fitting a bearing member in a plane with a minute gap.
【請求項3】 請求項1記載のスクロール圧縮機におい
て、軸受部材を内面をすべり軸受面とし外径部を円筒形
状とし、軸受部材を保持するハウジングの形状として内
径側に突条を有する円筒形状とし、このハウジング内に
前記軸受部材を微小空間をもって嵌合して軸受部を構成
していることを特徴とするスクロール圧縮機。
3. The scroll compressor according to claim 1, wherein the bearing member has a sliding bearing surface as an inner surface, an outer diameter portion has a cylindrical shape, and a housing for holding the bearing member has a cylindrical shape having a ridge on an inner diameter side. The scroll compressor is characterized in that the bearing member is formed by fitting the bearing member in this housing with a minute space.
JP11833695A 1995-05-17 1995-05-17 Scroll compressor Pending JPH08312542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11833695A JPH08312542A (en) 1995-05-17 1995-05-17 Scroll compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11833695A JPH08312542A (en) 1995-05-17 1995-05-17 Scroll compressor

Publications (1)

Publication Number Publication Date
JPH08312542A true JPH08312542A (en) 1996-11-26

Family

ID=14734152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11833695A Pending JPH08312542A (en) 1995-05-17 1995-05-17 Scroll compressor

Country Status (1)

Country Link
JP (1) JPH08312542A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1096150A3 (en) * 1999-11-01 2002-04-03 Copeland Corporation Scroll machine
JP2008088830A (en) * 2006-09-29 2008-04-17 Sanden Corp Compressor
CN102678546A (en) * 2011-03-08 2012-09-19 日立空调·家用电器株式会社 Scroll compressor
US9617997B2 (en) 2011-09-30 2017-04-11 Daikin Industries, Ltd. Scroll compressor with balancing weights on the shaft
JP2017145883A (en) * 2016-02-17 2017-08-24 ダイキン工業株式会社 Bearing housing and rotary machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1096150A3 (en) * 1999-11-01 2002-04-03 Copeland Corporation Scroll machine
AU761919B2 (en) * 1999-11-01 2003-06-12 Emerson Climate Technologies, Inc. Conical hub bearing for scroll machine
JP2008088830A (en) * 2006-09-29 2008-04-17 Sanden Corp Compressor
CN102678546A (en) * 2011-03-08 2012-09-19 日立空调·家用电器株式会社 Scroll compressor
CN102678546B (en) * 2011-03-08 2016-02-03 日立空调·家用电器株式会社 Scroll compressor
US9617997B2 (en) 2011-09-30 2017-04-11 Daikin Industries, Ltd. Scroll compressor with balancing weights on the shaft
JP2017145883A (en) * 2016-02-17 2017-08-24 ダイキン工業株式会社 Bearing housing and rotary machine

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