JP2003232286A - Scroll type compressor - Google Patents
Scroll type compressorInfo
- Publication number
- JP2003232286A JP2003232286A JP2002033276A JP2002033276A JP2003232286A JP 2003232286 A JP2003232286 A JP 2003232286A JP 2002033276 A JP2002033276 A JP 2002033276A JP 2002033276 A JP2002033276 A JP 2002033276A JP 2003232286 A JP2003232286 A JP 2003232286A
- Authority
- JP
- Japan
- Prior art keywords
- scroll
- chamber
- communication passage
- discharge chamber
- suction chamber
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- 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
- 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
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0253—Details concerning the base
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はスクロール型圧縮機
に関するものである。TECHNICAL FIELD The present invention relates to a scroll type compressor.
【０００２】[0002]
【従来の技術】渦巻体を有する固定スクロールと、渦巻
体を有し固定スクロールとかみ合って複数の作動空間を
形成する可動スクロールと、可動スクロールの旋回駆動
機構と、可動スクロールの自転防止機構と、固定スクロ
ールと可動スクロールと旋回駆動機構と自転防止機構と
を収容するハウジングとを備え、固定スクロールにより
ハウジングの内部空間が吸入室と吐出室とに区画され、
吸入室内に可動スクロールと旋回駆動機構と自転防止機
構とが収容され、吐出室の下部と吸入室の上部とを連通
させる連通路が固定スクロールとリアハウジングとの間
に介挿されるガスケットと固定スクロールとに形成され
たスクロール型圧縮機が特開平１１−８２３３５号に開
示されている。特開平１１−８２３３５号のスクロール
型圧縮機においては、外部冷媒回路から吸入室へ吸引さ
れた冷媒ガス中にミスト状に分散浮遊する潤滑油が、吸
入室内の旋回駆動機構や自転防止機構や固定スクロール
と可動スクロールとの摺接部等を潤滑する。吐出室内で
冷媒ガスから分離除去された潤滑油が吐出室の下部に溜
まる。吐出室下部に溜まった潤滑油は、連通路を介して
高圧の吐出室下部から低圧の吸入室上部へ圧送される。
吸入室上部へ圧送された潤滑油は、吸入室内で上方から
下方へ流れて、吸入室内の旋回駆動機構や自転防止機構
や固定スクロールと可動スクロールとの摺接部等を潤滑
する。吐出室から外部冷媒回路へ吐出する冷媒ガスから
潤滑油が分離除去されることにより、外部冷媒回路の熱
効率が向上する。2. Description of the Related Art A fixed scroll having a spiral body, a movable scroll having a spiral body and engaging with the fixed scroll to form a plurality of working spaces, a swivel drive mechanism for the movable scroll, and a rotation preventing mechanism for the movable scroll. A fixed scroll, a movable scroll, a swivel drive mechanism, and a housing that houses a rotation prevention mechanism are provided, and the internal space of the housing is divided into a suction chamber and a discharge chamber by the fixed scroll.
A movable scroll, a swivel drive mechanism, and a rotation prevention mechanism are housed in the suction chamber, and a communication passage that connects the lower portion of the discharge chamber and the upper portion of the suction chamber is inserted between the fixed scroll and the rear housing. A scroll type compressor formed in and is disclosed in JP-A-11-82335. In the scroll compressor disclosed in Japanese Patent Laid-Open No. 11-82335, the lubricating oil dispersed and suspended in a mist form in the refrigerant gas sucked from the external refrigerant circuit into the suction chamber has a swirling drive mechanism, a rotation preventing mechanism, and a fixing mechanism in the suction chamber. Lubricate the sliding contact portion between the scroll and the movable scroll. The lubricating oil separated and removed from the refrigerant gas in the discharge chamber collects in the lower part of the discharge chamber. The lubricating oil collected in the lower part of the discharge chamber is pressure-fed from the lower part of the high pressure discharge chamber to the upper part of the low pressure suction chamber through the communication passage.
The lubricating oil pumped to the upper part of the suction chamber flows from the upper side to the lower side in the suction chamber to lubricate the swivel drive mechanism, the rotation preventing mechanism, the sliding contact portion between the fixed scroll and the movable scroll, and the like in the suction chamber. By separating and removing the lubricating oil from the refrigerant gas discharged from the discharge chamber to the external refrigerant circuit, the thermal efficiency of the external refrigerant circuit is improved.
【０００３】[0003]
【発明が解決しようとする課題】特開平１１−８２３３
５号のスクロール型圧縮機には、吐出室の下部から吸入
室の上部へ至る長い連通路を形成するのに手間が掛かる
という問題がある。本発明は上記問題に鑑みてなされた
ものであり、渦巻体を有する固定スクロールと、渦巻体
を有し固定スクロールとかみ合って複数の作動空間を形
成する可動スクロールと、可動スクロールの旋回駆動機
構と、可動スクロールの自転防止機構と、固定スクロー
ルと可動スクロールと旋回駆動機構と自転防止機構とを
収容するハウジングとを備え、固定スクロールによりハ
ウジングの内部空間が吸入室と吐出室とに区画され、吸
入室内に可動スクロールと旋回駆動機構と自転防止機構
とが収容され、吐出室の下部と吸入室とを連通させる連
通路が配設されたスクロール型圧縮機であって、特開平
１１−８２３３５号のスクロール型圧縮機に比べて連通
路長が短く、且つ吐出室下部から吸入室へ圧送された潤
滑油が吸入室内の諸部材の潤滑に寄与できるスクロール
型圧縮機を提供することを目的とする。[Patent Document 1] Japanese Patent Application Laid-Open No. 11-8233
The scroll compressor of No. 5 has a problem that it takes time to form a long communication passage from the lower part of the discharge chamber to the upper part of the suction chamber. The present invention has been made in view of the above problems, and a fixed scroll having a spiral body, a movable scroll having a spiral body and engaging with the fixed scroll to form a plurality of working spaces, and a swivel drive mechanism for the movable scroll. A rotation preventing mechanism for the movable scroll, a fixed scroll, a movable scroll, a housing for accommodating the orbiting drive mechanism and the rotation preventing mechanism, and the fixed scroll divides the internal space of the housing into a suction chamber and a discharge chamber. A scroll-type compressor in which a movable scroll, an orbiting drive mechanism, and a rotation preventing mechanism are housed in a chamber, and a communication passage for connecting a lower portion of a discharge chamber and a suction chamber is arranged, which is disclosed in JP-A-11-82335. The communication passage length is shorter than that of a scroll compressor, and the lubricating oil pumped from the lower part of the discharge chamber to the suction chamber contributes to the lubrication of various members in the suction chamber. An object of the present invention is to provide a wear scroll-type compressor.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明においては、渦巻体を有する固定スクロール
と、渦巻体を有し固定スクロールとかみ合って複数の作
動空間を形成する可動スクロールと、可動スクロールの
旋回駆動機構と、可動スクロールの自転防止機構と、固
定スクロールと可動スクロールと旋回駆動機構と自転防
止機構とを収容するハウジングとを備え、固定スクロー
ルによりハウジングの内部空間が吸入室と吐出室とに区
画され、吸入室内に可動スクロールと旋回駆動機構と自
転防止機構とが収容され、吐出室の下部と吸入室の下部
とを連通させる連通路が固定スクロールの下部に形成さ
れていることを特徴とするスクロール型圧縮機を提供す
る。本発明に係るスクロール型圧縮機の連通路は吐出室
の下部と吸入室の下部とを連通させるので、吐出室の下
部と吸入室の上部とを連通させる特開平１１−８２３３
５号のスクロール型圧縮機の連通路に比べて短くするこ
とができる。吸入室の下部へ圧送された潤滑油は、旋回
する可動スクロールや回転する旋回駆動機構によって吸
入室上部へ運ばれるので、旋回駆動機構や自転防止機構
や固定スクロールと可動スクロールとの摺接部等の潤滑
に寄与できる。In order to solve the above problems, in the present invention, a fixed scroll having a spiral body and a movable scroll having a spiral body and meshing with the fixed scroll to form a plurality of working spaces. A movable scroll orbiting drive mechanism, a movable scroll autorotation prevention mechanism, a fixed scroll, a movable scroll, a housing for accommodating the orbital drive mechanism and the autorotation prevention mechanism, and the fixed scroll causes the internal space of the housing to serve as an intake chamber. It is divided into a discharge chamber, a movable scroll, a swivel drive mechanism, and a rotation prevention mechanism are housed in the suction chamber, and a communication passage that connects the lower portion of the discharge chamber and the lower portion of the suction chamber is formed in the lower portion of the fixed scroll. A scroll compressor characterized by the above. Since the communication passage of the scroll compressor according to the present invention connects the lower part of the discharge chamber and the lower part of the suction chamber, the lower part of the discharge chamber and the upper part of the suction chamber communicate with each other.
It can be shorter than the communication passage of the scroll compressor of No. 5. Lubricating oil pumped to the lower part of the suction chamber is carried to the upper part of the suction chamber by the orbiting movable scroll and rotating orbiting drive mechanism. Can contribute to lubrication.
【０００５】本発明の好ましい態様においては、吐出室
の下部に貯油室が形成され、連通路は貯油室と吸入室の
下部とを連通させる。吐出室の下部に貯油室が形成され
ていれば、吐出室内で冷媒ガスから分離除去された潤滑
油は貯油室に溜まる。貯油室に溜まった潤滑油は、吐出
室に吐出する冷媒ガスによって吹き上げられ再度ミスト
化するおそれがなく、確実に吸入室へ圧送される。In a preferred aspect of the present invention, an oil storage chamber is formed in the lower portion of the discharge chamber, and the communication passage connects the oil storage chamber and the lower portion of the suction chamber. If the oil storage chamber is formed in the lower part of the discharge chamber, the lubricating oil separated and removed from the refrigerant gas in the discharge chamber will be collected in the oil storage chamber. Lubricating oil accumulated in the oil storage chamber is reliably blown up to the suction chamber without fear of being blown up by the refrigerant gas discharged to the discharge chamber and becoming mist again.
【０００６】本発明の好ましい態様においては、連通路
は大径部と小径部とを有する。吐出室下部に溜まった潤
滑油の液面高さを連通路の吐出室側端部をより上方に維
持するために、連通路を通過する潤滑油の流量を微少値
に維持するのが望ましい。このため、連通路は小径であ
ることが望ましい。しかし全長に亘って小径の連通路を
固定スクロールに形成することは困難である。連通路の
大部分を大径とし残余部を小径にすれば、連通路の加工
の容易性を確保しつつ連通路を通過する潤滑油の流量を
微少値に維持することができる。In a preferred aspect of the present invention, the communication passage has a large diameter portion and a small diameter portion. In order to maintain the liquid level of the lubricating oil accumulated in the lower portion of the discharge chamber above the discharge chamber side end of the communication passage, it is desirable to maintain the flow rate of the lubricating oil passing through the communication passage at a minute value. Therefore, it is desirable that the communication passage has a small diameter. However, it is difficult to form a small-diameter communication passage in the fixed scroll over the entire length. If the majority of the communication passage has a large diameter and the remaining portion has a small diameter, the flow rate of the lubricating oil passing through the communication passage can be maintained at a minute value while ensuring the ease of processing the communication passage.
【０００７】本発明の好ましい態様においては、連通路
の吐出室側の端部にフィルターが配設されている。連通
路の吐出室側の端部を大径とし、当該端部にフィルター
を配設すれば、圧送される潤滑油に含まれるゴミで連通
路の小径部が目詰まりするのを防止することができる。In a preferred aspect of the present invention, a filter is arranged at the end of the communication passage on the discharge chamber side. If the end of the communication passage on the discharge chamber side has a large diameter and a filter is arranged at the end, it is possible to prevent the small diameter portion of the communication passage from being clogged with dust contained in the lubricating oil that is pumped. it can.
【０００８】[0008]
【発明の実施の形態】本発明の実施例に係る空調装置冷
媒圧縮用のスクロール型圧縮機を説明する。図１に示す
ように、本実施例に係るスクロール型圧縮機は、端板１
ａと渦巻体１ｂとを有する固定スクロール１と、端板２
ａと渦巻体２ｂとを有する可動スクロール２とを備えて
いる。固定スクロール１と可動スクロール２とは互いに
かみ合い、複数対の作動空間３を形成している。ケーシ
ング４ａがフロントハウジング４ｂに当接固定され、フ
ロントハウジング４ｂと共働してハウジング４を形成し
ている。固定スクロールの端板１ａにより、ハウジング
４の内部空間は吸入室５と吐出室６とに区画されてい
る。ハウジング４に形成された図示しない吸入ポートが
吸入室５に連通している。吸入ポートは外部冷媒回路の
低圧側に接続している。ハウジング４に形成された図示
しない吐出ポートが吐出室６に連通している。吐出ポー
トは外部冷媒回路の高圧側に接続している。BEST MODE FOR CARRYING OUT THE INVENTION A scroll type compressor for compressing an air conditioner refrigerant according to an embodiment of the present invention will be described. As shown in FIG. 1, the scroll compressor according to the present embodiment has an end plate 1
a and a scroll 1b having a fixed scroll 1 and an end plate 2
The movable scroll 2 having a and a scroll 2b is provided. The fixed scroll 1 and the movable scroll 2 mesh with each other to form a plurality of pairs of working spaces 3. The casing 4a is abutted and fixed to the front housing 4b, and cooperates with the front housing 4b to form the housing 4. The inner space of the housing 4 is divided into a suction chamber 5 and a discharge chamber 6 by the end plate 1a of the fixed scroll. A suction port (not shown) formed in the housing 4 communicates with the suction chamber 5. The suction port is connected to the low pressure side of the external refrigerant circuit. A discharge port (not shown) formed in the housing 4 communicates with the discharge chamber 6. The discharge port is connected to the high pressure side of the external refrigerant circuit.
【０００９】吸入室５内に主軸７が配設されている。主
軸７はラジアルベアリング８、９を介してフロントハウ
ジング４ｂに回転可能に支持されている。主軸７の一端
はフロントハウジング４ｂの外部へ突出している。電磁
クラッチ１０が、ラジアルベアリング１１を介してフロ
ントハウジング４ｂに回転可能に支持されている。主軸
７の他端に偏心ピン１２が固定されている。ブッシュ１
３が偏心ピン１２に摺動可能に外嵌合している。ブッシ
ュ１３はラジアルベアリング１４を介して可動スクロー
ル２の端板２ａの背面に形成されたボス２ｃ内に収容さ
れている。可動スクロール２とフロントハウジング４ｂ
との間にボールカップリング１５が配設されている。A main shaft 7 is arranged in the suction chamber 5. The main shaft 7 is rotatably supported by the front housing 4b via radial bearings 8 and 9. One end of the main shaft 7 projects to the outside of the front housing 4b. The electromagnetic clutch 10 is rotatably supported by the front housing 4b via a radial bearing 11. An eccentric pin 12 is fixed to the other end of the main shaft 7. Bush 1
3 is slidably fitted on the eccentric pin 12. The bush 13 is housed in a boss 2c formed on the back surface of the end plate 2a of the movable scroll 2 via a radial bearing 14. Movable scroll 2 and front housing 4b
A ball coupling 15 is arranged between the and.
【００１０】固定スクロールの端板１ａの中心に吐出孔
１６が形成されている。吐出孔１６は端板１ａに取り付
けられた吐出弁１７を介して吐出室６に連通している。A discharge hole 16 is formed at the center of the end plate 1a of the fixed scroll. The discharge hole 16 communicates with the discharge chamber 6 via a discharge valve 17 attached to the end plate 1a.
【００１１】吐出室６内に且つ吐出孔１６の下方に、邪
魔板１８が配設されている。邪魔板１８と固定スクロー
ルの端板１ａとの間に微少隙間が形成されている。邪魔
板１８により、吐出室６の下部に貯油室６ａが形成され
ている。貯油室６ａの下部と吸入室５の下部とを連通さ
せる直線状の連通路１９が、固定スクロールの端板１ａ
の下部と渦巻体１ｂの下部とを貫通して形成されてい
る。連通路１９は、貯油室６ａ側の長い大径部１９ａと
吸入室５側の短い小径部１９ｂとを有している。A baffle plate 18 is arranged in the discharge chamber 6 and below the discharge hole 16. A minute gap is formed between the baffle plate 18 and the end plate 1a of the fixed scroll. The baffle plate 18 forms an oil storage chamber 6 a below the discharge chamber 6. The linear communication passage 19 that connects the lower portion of the oil storage chamber 6a and the lower portion of the suction chamber 5 is formed by the end plate 1a of the fixed scroll.
And a lower part of the spiral body 1b. The communication passage 19 has a long large diameter portion 19a on the oil storage chamber 6a side and a short small diameter portion 19b on the suction chamber 5 side.
【００１２】本実施例に係るスクロール型圧縮機におい
ては、図示しない駆動源の動力が電磁クラッチ１０を介
して主軸７の一端に伝達され、主軸７が回転駆動され
る。主軸７の回転に伴って可動スクロール２が旋回運動
し、吸入ポートを通って吸入室５へ吸引された冷媒ガス
が、作動空間３内に取り込まれる。ボールカップリング
１５により可動スクロール２の自転が阻止される。冷媒
ガス中に分散浮遊するミスト状の潤滑油が、吸入室５内
の主軸７、偏心ピン１２、ブッシュ１３、ラジアルベア
リング８、９、１４、ボールカップリング１５、可動ス
クロール２と固定スクロール１との摺接部等を潤滑す
る。In the scroll compressor according to the present embodiment, the power of a drive source (not shown) is transmitted to one end of the main shaft 7 via the electromagnetic clutch 10, and the main shaft 7 is rotationally driven. The movable scroll 2 revolves with the rotation of the main shaft 7, and the refrigerant gas sucked into the suction chamber 5 through the suction port is taken into the working space 3. The ball coupling 15 prevents the movable scroll 2 from rotating. The mist-like lubricating oil dispersed and suspended in the refrigerant gas causes the main shaft 7 in the suction chamber 5, the eccentric pin 12, the bush 13, the radial bearings 8, 9, and 14, the ball coupling 15, the movable scroll 2 and the fixed scroll 1 to move. Lubricate the sliding contact area.
【００１３】作動空間３が体積を減少させつつ固定スク
ロール１の中心へ向けて移動し、作動空間３内の冷媒ガ
スが圧縮される。圧縮された冷媒ガスは固定スクロール
１の端板１ａに形成された吐出孔１６と吐出弁１７とを
介して吐出室６へ吐出する。冷媒ガスは吐出室６の囲壁
に衝突する。冷媒ガスが吐出室６の囲壁に衝突する際
に、冷媒ガス中に分散浮遊するミスト状の潤滑油が吐出
室６の囲壁に付着して冷媒ガスから分離除去され、邪魔
板１８と固定スクロールの端板１ａとの間の微少隙間を
通って、貯油室６ａに溜まる。潤滑油が分離除去された
冷媒ガスは、図示しない吐出ポートを介して外部冷媒回
路の高圧側へ流出する。吐出室から外部冷媒回路へ吐出
する冷媒ガスから潤滑油が分離除去されることにより、
外部冷媒回路の熱効率が向上する。The working space 3 moves toward the center of the fixed scroll 1 while reducing its volume, and the refrigerant gas in the working space 3 is compressed. The compressed refrigerant gas is discharged into the discharge chamber 6 via the discharge hole 16 and the discharge valve 17 formed in the end plate 1a of the fixed scroll 1. The refrigerant gas collides with the surrounding wall of the discharge chamber 6. When the refrigerant gas collides with the surrounding wall of the discharge chamber 6, the mist-like lubricating oil dispersed and suspended in the refrigerant gas adheres to the surrounding wall of the discharge chamber 6 and is separated and removed from the refrigerant gas. It collects in the oil storage chamber 6a through a minute gap between it and the end plate 1a. The refrigerant gas from which the lubricating oil has been separated and removed flows out to the high pressure side of the external refrigerant circuit via a discharge port (not shown). By separating and removing the lubricating oil from the refrigerant gas discharged from the discharge chamber to the external refrigerant circuit,
The thermal efficiency of the external refrigerant circuit is improved.
【００１４】高圧の貯油室６ａに溜まった潤滑油は、固
定スクロール１の下部に形成された連通路１９を通っ
て、低圧の吸入室５下部へ圧送される。吸入室５の下部
へ圧送された潤滑油は、吸入室５の下部に溜まり、旋回
運動する可動スクロール２、ブッシュ１３、回転する偏
心ピン１２等により、吸入室５の上部へ運ばれる。吸入
室５の上部へ運ばれた潤滑油は、下方へ流れ下り、吸入
室５内の主軸７、偏心ピン１２、ブッシュ１３、ラジア
ルベアリング８、９、１４、ボールカップリング１５、
可動スクロール２と固定スクロール１との摺接部等を潤
滑する。The lubricating oil accumulated in the high pressure oil storage chamber 6a is pressure-fed to the lower portion of the low pressure suction chamber 5 through the communication passage 19 formed in the lower portion of the fixed scroll 1. Lubricating oil pumped to the lower part of the suction chamber 5 collects in the lower part of the suction chamber 5, and is carried to the upper part of the suction chamber 5 by the orbiting movable scroll 2, the bush 13, the rotating eccentric pin 12, and the like. The lubricating oil carried to the upper part of the suction chamber 5 flows downward, and the main shaft 7 in the suction chamber 5, the eccentric pin 12, the bush 13, the radial bearings 8, 9, 14, the ball coupling 15,
Lubricate the sliding contact portion between the movable scroll 2 and the fixed scroll 1.
【００１５】連通路１９は、吐出室６の下部に形成した
貯油室６ａの下部と吸入室５の下部とを連通させるの
で、吐出室の下部と吸入室の上部とを連通させる特開平
１１−８２３３５号のスクロール型圧縮機の連通路に比
べて短くすることができる。吸入室５の下部へ圧送され
た潤滑油は旋回運動する可動スクロール２、ブッシュ１
３、回転する偏心ピン１２等により、吸入室５の上部へ
運ばれるので、吸入室５内の主軸７、偏心ピン１２、ブ
ッシュ１３、ラジアルベアリング８、９、１４、ボール
カップリング１５、可動スクロール２と固定スクロール
１との摺接部等の潤滑に寄与できる。邪魔板１８を配設
して吐出室６の下部に貯油室６ａを形成したので、貯油
室６ａに溜まった潤滑油は、吐出室６に吐出する冷媒ガ
スによって吹き上げられ再度ミスト化するおそれがな
く、確実に吸入室５へ圧送される。貯油室６ａに溜まっ
た潤滑油の液面高さを連通路１９の吐出室６側端部より
上方に維持するために、連通路１９を通過する潤滑油の
流量を微少値に維持するのが望ましい。このため、連通
路１９は小径であることが望ましい。しかし全長に亘っ
て小径の連通路１９を固定スクロール１に形成すること
は困難である。連通路１９の貯油室６ａ側の大部分を大
径部１９ａとし吸入室５側の残余部を小径部１９ｂとす
れば、連通路１９の加工の容易性を確保しつつ連通路１
９を通過する潤滑油の流量を微少値に維持することがで
きる。Since the communication passage 19 connects the lower part of the oil storage chamber 6a formed in the lower part of the discharge chamber 6 and the lower part of the suction chamber 5, the lower part of the discharge chamber and the upper part of the suction chamber communicate with each other. It can be made shorter than the communication passage of the scroll compressor of No. 82335. Lubricating oil pumped to the lower part of the suction chamber 5 orbits the movable scroll 2 and the bush 1.
3. The rotating eccentric pin 12 and the like bring the main shaft 7, the eccentric pin 12, the bush 13, the radial bearings 8, 9, 14, the ball coupling 15, the movable scroll in the suction chamber 5 to the upper part of the suction chamber 5. 2 can contribute to lubrication of the sliding contact portion between the fixed scroll 1 and the like. Since the baffle plate 18 is disposed and the oil storage chamber 6a is formed in the lower portion of the discharge chamber 6, the lubricating oil accumulated in the oil storage chamber 6a is blown up by the refrigerant gas discharged into the discharge chamber 6 and is not likely to be mist again. , Is reliably pumped to the suction chamber 5. In order to maintain the liquid level of the lubricating oil accumulated in the oil storage chamber 6a above the end of the communication passage 19 on the discharge chamber 6 side, it is necessary to maintain the flow rate of the lubricating oil passing through the communication passage 19 at a minute value. desirable. Therefore, it is desirable that the communication passage 19 has a small diameter. However, it is difficult to form the small diameter communication passage 19 in the fixed scroll 1 over the entire length. If a large portion of the communication passage 19 on the oil storage chamber 6a side is formed as a large diameter portion 19a and a remaining portion of the communication passage 19 on the suction chamber 5 side is formed as a small diameter portion 19b, the communication passage 1 can be formed while ensuring ease of processing.
The flow rate of the lubricating oil passing through 9 can be maintained at a very small value.
【００１６】以上本発明の実施例を説明したが、本発明
は上記実施例に限定されない。図２に示すように、固定
スクロールの端板１ａに屈曲した連通路１９′を形成
し、連通路１９′の吸入室５側端部と貯油室６ａ側端部
とを大径部１９ａ′とし中間部を小径部１９ｂ′として
も良い。屈曲した連通路１９′は直線状の連通路１９よ
りも短く加工が容易である。大径部１９ａ、１９ａ′の
貯油室６ａ側端部にフィルターを配設しても良い。圧送
される潤滑油に含まれるゴミで連通路の小径部１９ｂ、
１９ｂ′が目詰まりするのを防止することができる。Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. As shown in FIG. 2, a bent communication passage 19 'is formed in the end plate 1a of the fixed scroll, and the suction chamber 5 side end and the oil storage chamber 6a side end of the communication passage 19' are formed into a large diameter portion 19a '. The intermediate portion may be the small diameter portion 19b '. The bent communication passage 19 'is shorter than the straight communication passage 19 and is easy to process. A filter may be arranged at the ends of the large diameter portions 19a, 19a 'on the oil storage chamber 6a side. The small diameter portion 19b of the communication passage is caused by dust contained in the lubricating oil pumped,
It is possible to prevent clogging of 19b '.
【００１７】[0017]
【発明の効果】以上説明したごとく、本発明に係るスク
ロール型圧縮機の連通路は吐出室の下部と吸入室の下部
とを連通させるので、吐出室の下部と吸入室の上部とを
連通させる特開平１１−８２３３５号のスクロール型圧
縮機の連通路に比べて短くすることができる。吸入室下
部へ圧送された潤滑油は、旋回する可動スクロールや回
転する旋回駆動機構によって吸入室上部へ運ばれるの
で、旋回駆動機構や自転防止機構や固定スクロールと可
動スクロールとの摺接部等の潤滑に寄与できる。As described above, the communication passage of the scroll compressor according to the present invention connects the lower part of the discharge chamber and the lower part of the suction chamber, and thus connects the lower part of the discharge chamber and the upper part of the suction chamber. The length can be shortened as compared with the communication passage of the scroll compressor disclosed in JP-A-11-82335. Lubricating oil pumped to the lower part of the suction chamber is carried to the upper part of the suction chamber by the orbiting movable scroll and the rotating orbiting drive mechanism. Can contribute to lubrication.
【図１】本発明の実施例に係るスクロール型圧縮機の側
断面図である。FIG. 1 is a side sectional view of a scroll compressor according to an embodiment of the present invention.
【図２】本発明の他の実施例に係るスクロール型圧縮機
の部分拡大側断面図である。FIG. 2 is a partially enlarged side sectional view of a scroll compressor according to another embodiment of the present invention.
１ 固定スクロール １ａ 端板 １ｂ 渦巻体 ２ 可動スクロール ２ａ 端板 ２ｂ 渦巻体 ３ 作動空間 ４ ハウジング ５ 吸入室 ６ 吐出室 ６ａ 貯油室 １９、１９′ 連通路 １９ａ、１９ａ′ 大径部 １９ｂ、１９ｂ′ 小径部 1 fixed scroll 1a End plate 1b spiral body 2 Movable scroll 2a End plate 2b spiral body 3 working space 4 housing 5 Inhalation chamber 6 discharge chamber 6a Oil storage chamber 19, 19 'communication passage 19a, 19a 'Large diameter part 19b, 19b 'Small diameter part
フロントページの続き (72)発明者 高畑 正明 群馬県伊勢崎市寿町20番地 サンデン株式 会社内 (72)発明者 伊藤 清文 群馬県伊勢崎市寿町20番地 サンデン株式 会社内 Ｆターム(参考） 3H029 AA02 AA15 AB03 BB05 BB09 BB35 CC04 3H039 AA02 AA12 BB12 BB15 BB16 CC03 CC27 Continued front page (72) Inventor Masaaki Takahata 20, Kotobukicho, Isesaki-shi, Gunma Sanden shares In the company (72) Inventor Kiyofumi Ito 20, Kotobukicho, Isesaki-shi, Gunma Sanden shares In the company F-term (reference) 3H029 AA02 AA15 AB03 BB05 BB09 BB35 CC04 3H039 AA02 AA12 BB12 BB15 BB16 CC03 CC27
Claims (4)
体を有し固定スクロールとかみ合って複数の作動空間を
形成する可動スクロールと、可動スクロールの旋回駆動
機構と、可動スクロールの自転防止機構と、固定スクロ
ールと可動スクロールと旋回駆動機構と自転防止機構と
を収容するハウジングとを備え、固定スクロールにより
ハウジングの内部空間が吸入室と吐出室とに区画され、
吸入室内に可動スクロールと旋回駆動機構と自転防止機
構とが収容され、吐出室の下部と吸入室の下部とを連通
させる連通路が固定スクロールの下部に形成されている
ことを特徴とするスクロール型圧縮機。1. A fixed scroll having a spiral body, a movable scroll having a spiral body and engaging with the fixed scroll to form a plurality of working spaces, a swivel drive mechanism for the movable scroll, and a rotation preventing mechanism for the movable scroll. A fixed scroll, a movable scroll, a swivel drive mechanism, and a housing that houses a rotation prevention mechanism are provided, and the internal space of the housing is divided into a suction chamber and a discharge chamber by the fixed scroll.
A scroll type in which a movable scroll, a swivel drive mechanism, and a rotation preventing mechanism are housed in the suction chamber, and a communication passage that connects the lower portion of the discharge chamber and the lower portion of the suction chamber is formed in the lower portion of the fixed scroll. Compressor.
路は貯油室と吸入室の下部とを連通させることを特徴と
する請求項１に記載のスクロール型圧縮機。2. The scroll compressor according to claim 1, wherein an oil storage chamber is formed in a lower portion of the discharge chamber, and the communication passage connects the oil storage chamber and a lower portion of the suction chamber.
を特徴とする請求項１又は２に記載のスクロール型圧縮
機。3. The scroll compressor according to claim 1, wherein the communication passage has a large diameter portion and a small diameter portion.
配設されていることを特徴とする請求項１乃至３の何れ
か１項に記載のスクロール型圧縮機。4. The scroll compressor according to claim 1, wherein a filter is provided at an end of the communication passage on the discharge chamber side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002033276A JP2003232286A (en) | 2002-02-12 | 2002-02-12 | Scroll type compressor |
| US10/357,386 US20030152473A1 (en) | 2002-02-12 | 2003-02-04 | Scroll-type compressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002033276A JP2003232286A (en) | 2002-02-12 | 2002-02-12 | Scroll type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003232286A true JP2003232286A (en) | 2003-08-22 |
Family
ID=27654872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002033276A Pending JP2003232286A (en) | 2002-02-12 | 2002-02-12 | Scroll type compressor |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20030152473A1 (en) |
| JP (1) | JP2003232286A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006241982A (en) * | 2005-02-28 | 2006-09-14 | Mitsubishi Heavy Ind Ltd | Compressor |
| JP2006307803A (en) * | 2005-05-02 | 2006-11-09 | Sanden Corp | Scroll compressor |
| JP2007182775A (en) * | 2006-01-05 | 2007-07-19 | Sanden Corp | Scroll type fluid machine |
| US7604465B2 (en) | 2006-06-14 | 2009-10-20 | Mitsubishi Heavy Industries, Ltd. | Fluid machine and scroll compressor having a crankshaft with a large diameter shaft section |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4219262B2 (en) * | 2003-12-10 | 2009-02-04 | サンデン株式会社 | Compressor |
| KR101731449B1 (en) * | 2015-12-09 | 2017-04-28 | 엘지전자 주식회사 | Scroll compressor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59141190U (en) * | 1983-03-14 | 1984-09-20 | サンデン株式会社 | Lubrication structure of scroll type compressor |
| JP4246826B2 (en) * | 1998-12-14 | 2009-04-02 | サンデン株式会社 | Scroll compressor |
-
2002
- 2002-02-12 JP JP2002033276A patent/JP2003232286A/en active Pending
-
2003
- 2003-02-04 US US10/357,386 patent/US20030152473A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006241982A (en) * | 2005-02-28 | 2006-09-14 | Mitsubishi Heavy Ind Ltd | Compressor |
| JP2006307803A (en) * | 2005-05-02 | 2006-11-09 | Sanden Corp | Scroll compressor |
| JP2007182775A (en) * | 2006-01-05 | 2007-07-19 | Sanden Corp | Scroll type fluid machine |
| US7604465B2 (en) | 2006-06-14 | 2009-10-20 | Mitsubishi Heavy Industries, Ltd. | Fluid machine and scroll compressor having a crankshaft with a large diameter shaft section |
Also Published As
| Publication number | Publication date |
|---|---|
| US20030152473A1 (en) | 2003-08-14 |
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