JPH0726619B2 - Scroll compressor - Google Patents

Scroll compressor

Info

Publication number
JPH0726619B2
JPH0726619B2 JP1204369A JP20436989A JPH0726619B2 JP H0726619 B2 JPH0726619 B2 JP H0726619B2 JP 1204369 A JP1204369 A JP 1204369A JP 20436989 A JP20436989 A JP 20436989A JP H0726619 B2 JPH0726619 B2 JP H0726619B2
Authority
JP
Japan
Prior art keywords
scroll
key
oil
movable scroll
groove
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.)
Expired - Fee Related
Application number
JP1204369A
Other languages
Japanese (ja)
Other versions
JPH0367080A (en
Inventor
岡田  聡
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP1204369A priority Critical patent/JPH0726619B2/en
Publication of JPH0367080A publication Critical patent/JPH0367080A/en
Publication of JPH0726619B2 publication Critical patent/JPH0726619B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • F01C17/00Arrangements for drive of co-operating members, e.g. for rotary piston and casing
    • F01C17/06Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
    • F01C17/066Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with an intermediate piece sliding along perpendicular axes, e.g. Oldham coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、スクロール形圧縮機に関する。The present invention relates to a scroll compressor.

(従来の技術) 従来、スクロール形圧縮機として、特願昭63-243219号
(昭和63年9月27日出願)を提案し、この提案内容は、
第4図に示したごとく、ハウジング(H)の上部に設け
たスラスト受面(A)に、固定スクロール(X)に噛合
う可動スクロール(Y)の裏面を回動自由に支持すると
共に、この可動スクロール(Y)の外周部に第1キー溝
(a)を、また、静止部材例えば固定スクロール(X)
の外周部に、前記第1キー溝(a)と直交状に延びる第
2キー溝(b)をそれぞれ形成する一方、これら各キー
溝(a)(b)に係合する第1及び第2キー(K1)(K
2)をもつオルダムリング(O)を前記可動スクロール
(Y)の外周部位に配設したものである。
(Prior Art) Conventionally, as a scroll type compressor, we have proposed Japanese Patent Application No. 63-243219 (filed on September 27, 1988).
As shown in FIG. 4, the thrust receiving surface (A) provided on the upper part of the housing (H) rotatably supports the back surface of the movable scroll (Y) which meshes with the fixed scroll (X), and A first key groove (a) is provided on the outer periphery of the movable scroll (Y), and a stationary member such as a fixed scroll (X).
Second key grooves (b) extending orthogonally to the first key groove (a) are formed on the outer peripheral portion of the first and second key grooves (a) and (b), respectively. Key (K1) (K
The Oldham ring (O) having 2) is arranged on the outer peripheral portion of the movable scroll (Y).

また、前記スラスト受面(A)には、クランク軸(K)
内に設けた給油通路に連通される周方向の油溝(B)を
設けて、該油溝(B)を介して前記スラスト受面(A)
に給油し、この給油後の油を前記各キー(K1)(K2)の
摺動部位に給油し、更に、該摺動部位などに給油した後
の油一部を吸入冷媒で持上げて、前記各スクロール
(X)(Y)間に形成される圧縮室(C)に供給し、該
圧縮室(C)のシールを行うようにしている。
The thrust receiving surface (A) has a crankshaft (K).
A circumferential oil groove (B) communicating with an oil supply passage provided inside is provided, and the thrust receiving surface (A) is provided through the oil groove (B).
Oil to the sliding parts of the keys (K1) and (K2), and then lifts a part of the oil after filling the sliding parts with the suction refrigerant, It is supplied to the compression chamber (C) formed between the scrolls (X) and (Y), and the compression chamber (C) is sealed.

(発明が解決しようとする課題) 所で、以上の構成では、前記第1及び第2キー(K1)
(K2)の摺動部位への給油量が不足気味となって、良好
な潤滑が行えないのであり、また、特に低容量運転を行
うようなとき、吸入冷媒による油の持上げ量が少なくな
って、前記圧縮室(C)のシール性が悪くなる問題があ
った。
(Problems to be solved by the invention) However, in the above configuration, the first and second keys (K1) are used.
The amount of oil supplied to the sliding parts of (K2) is likely to be insufficient, and good lubrication cannot be performed. Also, especially when low capacity operation is performed, the amount of oil lifted by the suctioned refrigerant decreases. However, there is a problem that the sealing property of the compression chamber (C) is deteriorated.

本発明は以上のような問題に鑑みてなしたもので、その
目的は、前記各キーの摺動部位への給油量を充分に確保
して良好な潤滑を行うことができながら、例え低容量運
転を行う場合にあっても、吸入冷媒による油の持上げ量
を大として、前記各スクロール間の圧縮室を確実にシー
ルできるスクロール形圧縮機を提供することにある。
The present invention has been made in view of the above problems, and an object thereof is to ensure a sufficient amount of oil supply to the sliding portion of each of the keys and to perform good lubrication, while maintaining low capacity. An object of the present invention is to provide a scroll-type compressor capable of reliably sealing the compression chambers between the scrolls by increasing the amount of oil lifted by the suction refrigerant even when operating.

(課題を解決するための手段) 上記目的を達成するために、本発明では、ハウジング
(4)の上部に形成するスラスト受面(41)に、固定ス
クロール(2)に噛合う可動スクロール(3)の裏面を
回動自在に支持すると共に、該可動スクロール(3)に
設ける第1キー溝(7)に係合する第1キー(91)と、
静止部材側に設ける第2キー溝(8)に係合する第2キ
ー(92)とを直交状に備えるオルダムリング(9)を介
装したスクロール形圧縮機において、前記第1キー溝
(7)を、前記可動スクロール(3)の裏面から吸入ポ
ート(10)に臨む表面にかけて上下を連通させて形成す
ると共に、この第1キー溝(7)の径方向内方側の長さ
を、前記可動スクロール(3)の公転時、前記第1キー
溝(7)が前記スラスト受面(41)の周方向に形成する
油溝(42)に達する長さに設定したことを特徴とするも
のである。
(Means for Solving the Problem) In order to achieve the above object, according to the present invention, a thrust receiving surface (41) formed in an upper portion of a housing (4) has a movable scroll (3) that meshes with a fixed scroll (2). A first key (91) that rotatably supports the back surface of the) and that engages with a first key groove (7) provided in the movable scroll (3);
A scroll type compressor having an Oldham ring (9) provided orthogonally with a second key (92) engaged with a second key groove (8) provided on the stationary member side. ) Is formed by communicating vertically from the back surface of the movable scroll (3) to the surface facing the intake port (10), and the length of the first key groove (7) on the radially inner side is When the movable scroll (3) revolves, the first key groove (7) is set to reach the oil groove (42) formed in the circumferential direction of the thrust receiving surface (41). is there.

(作用) 前記可動スクロール(3)が一公転するとき、前記第1
キー溝(7)の内周端縁が前記スラスト受面(41)の油
溝(42)を乗り越え、この後該油溝(42)の油が前記内
周端縁で外方に飛散されて、前記オルダムリング(9)
の各キー(91)(92)へと積極的に給油されるのであ
り、また、前記飛散油が各キー(91)(92)に衝突して
ミスト状となり、このミスト状の油が吸入冷媒で吸入ポ
ート(10)へと持上げられて、各スクロール(2)
(3)の圧縮室へと供給され、該圧縮室の確実なシール
が行われる。
(Operation) When the movable scroll (3) revolves once, the first scroll
The inner peripheral edge of the key groove (7) rides over the oil groove (42) of the thrust receiving surface (41), and then the oil in the oil groove (42) is scattered outward at the inner peripheral edge. , Oldham Ring (9)
The keys (91) (92) are positively refueled, and the scattered oil collides with the keys (91) (92) to form a mist, and this mist-like oil is the suction refrigerant. Is lifted to the suction port (10) by each scroll (2)
It is supplied to the compression chamber of (3), and the compression chamber is reliably sealed.

(実施例) 第3図に示したスクロール形圧縮機は、密閉ケーシング
(1)の内方上部に、互いに噛み合う固定及び可動スク
ロール(2)(3)をハウジング(4)を介して上下対
向状に支持し、該ハウジング(4)の上面側に設けたス
ラスト受面(41)に、前記可動スクロール(3)の裏面
側を回動自由に摺接支持すると共に、前記ケーシング
(1)の下部側にモータ(5)を配設して、このモータ
(5)から延びるクランク軸(6)の上部側を前記可動
スクロール(3)に連結する一方、該可動スクロール
(3)の外周対向部位に一対の第1キー溝(7)を、ま
た、静止部材例えば前記ハウジング(4)の外周対向部
位に、前記各第1キー溝(7)と直交状に延びる一対の
第2キー溝(8)をそれぞれ設けて、これら各キー溝
(7)(8)に係合する第1及び第2キー(91)(92)
をもつオルダムリング(9)を、前記可動スクロール
(3)の外周部位に配設して、前記オルダムリング
(9)で前記可動スクロール(3)の自転を阻止し、該
可動スクロール(3)を固定スクロール(2)に対し公
転駆動させるようにしている。
(Embodiment) In the scroll compressor shown in FIG. 3, fixed and movable scrolls (2) and (3) meshing with each other are vertically opposed to each other via a housing (4) in an inner upper part of a hermetic casing (1). And a thrust receiving surface (41) provided on the upper surface side of the housing (4) slidably supports the back surface side of the movable scroll (3) and also supports the lower part of the casing (1). A motor (5) is arranged on the side, and the upper side of a crankshaft (6) extending from the motor (5) is connected to the movable scroll (3), while at the opposite side of the outer periphery of the movable scroll (3). A pair of first keyways (7) and a pair of second keyways (8) extending orthogonally to each of the first keyways (7) at a stationary member, for example, at a portion facing the outer circumference of the housing (4). Are respectively provided, and these key grooves (7) and (8) are provided. First and second key to engage (91) (92)
An Oldham ring (9) having the above is arranged on the outer peripheral portion of the movable scroll (3) to prevent the movable scroll (3) from rotating by the Oldham ring (9), and to move the movable scroll (3). The fixed scroll (2) is revolved.

また、前記スラスト受面(41)には、周方向に延びる油
溝(42)を設けて、該油溝(42)を前記ハウジング
(4)内の連通路(43)を介して、前記クランク軸
(6)内に形成した給油通路(61)に連通させ、この給
油通路(61)に汲上げられた油を、前記連通路(43)か
ら油溝(42)を経て前記スラスト受面(41)へと給油す
るようにしている。
Further, an oil groove (42) extending in the circumferential direction is provided on the thrust receiving surface (41), and the oil groove (42) is passed through the communication passage (43) in the housing (4) to the crank. The thrust oil receiving passage (61) formed in the shaft (6) is communicated with, and the oil pumped up into the oil passage (61) is passed through the oil passage (43) through the oil groove (42) to the thrust receiving surface ( I am trying to refuel to 41).

しかして以上のスクロール形圧縮機において、第1図及
び第2図で詳しく示したごとく、前記各第1キー溝
(7)を、前記可動スクロール(3)の裏面側から各ス
クロール(2)(3)間の吸入ポート(10)に臨む上面
にかけて上下連通状に形成すると共に、前記各第1キー
溝(7)の径方向内方側の長さを、可動スクロール
(3)の公転時に、前記各第1キー溝(7)が前記スラ
スト受面(41)に設ける油溝(42)に達する長さに設定
したのである。
Thus, in the scroll compressor described above, as shown in detail in FIGS. 1 and 2, the first key grooves (7) are provided in the scrolls (2) (from the back surface side of the movable scroll (3)). 3) is formed so as to communicate vertically with the upper surface facing the intake port (10), and the radial inner side length of each of the first key grooves (7) is set to the following value when the movable scroll (3) revolves. The length of each of the first key grooves (7) reaches the oil groove (42) provided on the thrust receiving surface (41).

更に詳しくは、前記可動スクロール(3)の外周部位
に、径方向外方に向けて突出する一対のアーム部(31)
を一体に設けて、この各アーム部(31)に前記第1キー
溝(7)をそれぞれ形成すると共に、該各第1キー溝
(7)の長さを、前記可動スクロール(3)が固定スク
ロール(2)に対し一公転するとき、前記各第1キー溝
(7)の内周側端縁(71)が前記油溝(42)を乗り越え
て往復動されるような長さに設定する。
More specifically, a pair of arm portions (31) projecting outward in the radial direction at the outer peripheral portion of the orbiting scroll (3).
Are integrally provided to form the first key groove (7) in each arm portion (31), and the movable scroll (3) fixes the length of each first key groove (7). The length is set so that the inner peripheral edge (71) of each of the first key grooves (7) can reciprocate over the oil groove (42) when revolving once with respect to the scroll (2). .

以上の構成とすることにより、前記可動スクロール
(3)が固定スクロール(2)に対し一公転されると
き、同各図で示したように、前記各第1キー溝(7)の
内周端縁(71)が前記油溝(42)を乗り越え、この後該
油溝(42)の油が前記内周端縁(71)で外方に飛散され
て、前記オルダムリング(9)の各キー(91)(92)へ
と積極的に給油されるのであり、また、前記飛散油が前
記各キー(91)(92)に衝突してミスト状となり、この
ミスト状の油が、吸入冷媒で前記各第1キー溝(7)か
ら吸入ポート(10)へと持上げられて、前記各スクロー
ル(2)(3)の圧縮室(11)に供給され、該圧縮室
(11)が確実にシールされるのである。
With the above configuration, when the movable scroll (3) revolves once with respect to the fixed scroll (2), as shown in each drawing, the inner peripheral end of each first key groove (7). The rim (71) rides over the oil groove (42), and then the oil in the oil groove (42) is scattered outward at the inner peripheral edge (71) to cause each key of the Oldham ring (9). (91) (92) is positively refueled, and the scattered oil collides with the keys (91) (92) to form a mist, and this mist-like oil is the suction refrigerant. It is lifted from each of the first key grooves (7) to the suction port (10) and supplied to the compression chamber (11) of each of the scrolls (2) and (3), and the compression chamber (11) is reliably sealed. Is done.

前記ハウジング(4)のスラスト受面(41)は、前記油
溝(42)を中心として内外方に、前記可動スクロール
(3)の旋回半径の2倍の幅となるように設けるのであ
り、斯くするときには、前記可動スクロール(3)が一
回旋回することにより、前記スラスト受面(41)の全面
に給油できるのである。
The thrust receiving surface (41) of the housing (4) is provided inward and outward about the oil groove (42) so as to have a width twice the orbiting radius of the movable scroll (3). In doing so, the movable scroll (3) can be rotated once to refuel the entire thrust receiving surface (41).

(発明の効果) 以上説明したように、本発明のスクロール形圧縮機で
は、可動スクロール(3)に設ける第1キー溝(7)
を、可動スクロール(3)の裏面から吸入ポート(10)
に臨む表面にかけて上下連通状に形成すると共に、前記
第1キー溝(7)の径方向内方側の長さを、前記可動ス
クロール(3)の公転時、前記第1キー溝(7)がスラ
スト受面(41)の周方向に設ける油溝(42)に達する長
さに設定したから、前記可動スクロール(3)の公転に
伴いオルダムリング(9)の摺動部位に充分な油量を給
油できて、この摺動部位の良好な潤滑を行うことがで
き、しかも、例え低容量運転を行う場合にあっても、吸
入冷媒による油の持上げ量を大として、前記各スクロー
ル(2)(3)間の圧縮室を確実にシールできるに至っ
たのである。
(Effects of the Invention) As described above, in the scroll compressor of the present invention, the first key groove (7) provided in the movable scroll (3).
From the back of the orbiting scroll (3) to the suction port (10)
The first key groove (7) is formed so as to communicate with the upper and lower sides in a vertical direction, and the length of the first key groove (7) on the radially inner side is set so that when the orbit of the movable scroll (3) revolves. Since the length is set to reach the oil groove (42) provided in the circumferential direction of the thrust receiving surface (41), a sufficient amount of oil is provided to the sliding portion of the Oldham ring (9) as the movable scroll (3) revolves. It is possible to refuel, and to perform good lubrication of this sliding portion, and even when performing low-capacity operation, increase the amount of oil lifted by the suction refrigerant to increase the amount of each scroll (2) ( The compression chamber between 3) can be reliably sealed.

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

第1図は本発明にかかるスクロール形圧縮機の要部を示
す平面図、第2図は同縦断面図、第3図はスクロール形
圧縮機の一部を省略した全体構造図、第4図は従来例を
示す断面図である。 (2)……固定スクロール (3)……可動スクロール (4)……ハウジング (41)……スラスト受面 (42)……油溝 (7)……第1キー溝 (8)……第2キー溝 (9)……オルダムリング (91)……第1キー (92)……第2キー (10)……吸入ポート
FIG. 1 is a plan view showing a main part of a scroll compressor according to the present invention, FIG. 2 is a longitudinal sectional view of the same, and FIG. 3 is an overall structural view in which a part of the scroll compressor is omitted, and FIG. [FIG. 7] is a cross-sectional view showing a conventional example. (2) …… Fixed scroll (3) …… Movable scroll (4) …… Housing (41) …… Thrust receiving surface (42) …… Oil groove (7) …… First key groove (8) …… First 2 key groove (9) …… Oldham ring (91) …… first key (92) …… second key (10) …… suction port

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ハウジング(4)の上部に形成するスラス
ト受面(41)に、固定スクロール(2)に噛合う可動ス
クロール(3)の裏面を回動自由に支持すると共に、該
可動スクロール(3)に設ける第1キー溝(7)に係合
する第1キー(91)と、静止部材側に設ける第2キー溝
(8)に係合する第2キー(92)とを直交状に備えるオ
ルダムリング(9)を介装したスクロール形圧縮機にお
いて、前記第1キー溝(7)を、前記可動スクロール
(3)の裏面から吸入ポート(10)に臨む表面にかけて
上下を連通させて形成すると共に、この第1キー溝
(7)の径方向内方側の長さを、前記可動スクロール
(3)の公転時、前記第1キー溝(7)が前記スラスト
受面(41)の周方向に形成する油溝(42)に達する長さ
に設定していることを特徴とするスクロール形圧縮機。
1. A thrust receiving surface (41) formed on an upper part of a housing (4) rotatably supports a back surface of a movable scroll (3) which meshes with a fixed scroll (2), and at the same time, the movable scroll (3) is supported. The first key (91) engaged with the first key groove (7) provided in 3) and the second key (92) engaged with the second key groove (8) provided on the stationary member side are orthogonal to each other. In a scroll compressor having an Oldham ring (9) provided therein, the first key groove (7) is formed by vertically communicating from the back surface of the movable scroll (3) to the surface facing the suction port (10). In addition, the length of the first key groove (7) on the inner side in the radial direction is set so that when the movable scroll (3) revolves, the first key groove (7) surrounds the thrust receiving surface (41). The length is set to reach the oil groove (42) formed in the direction. Scroll type compressor.
JP1204369A 1989-08-07 1989-08-07 Scroll compressor Expired - Fee Related JPH0726619B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1204369A JPH0726619B2 (en) 1989-08-07 1989-08-07 Scroll compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1204369A JPH0726619B2 (en) 1989-08-07 1989-08-07 Scroll compressor

Publications (2)

Publication Number Publication Date
JPH0367080A JPH0367080A (en) 1991-03-22
JPH0726619B2 true JPH0726619B2 (en) 1995-03-29

Family

ID=16489375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1204369A Expired - Fee Related JPH0726619B2 (en) 1989-08-07 1989-08-07 Scroll compressor

Country Status (1)

Country Link
JP (1) JPH0726619B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0575493U (en) * 1992-03-11 1993-10-15 株式会社ゼクセル Scroll compressor
JP3661454B2 (en) * 1998-11-20 2005-06-15 三菱電機株式会社 Scroll compressor
KR100548489B1 (en) * 2003-12-20 2006-02-02 엘지전자 주식회사 Oil supply structure for scrool compressor

Also Published As

Publication number Publication date
JPH0367080A (en) 1991-03-22

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