JP4766928B2 - Refrigerant gas compressor - Google Patents

Refrigerant gas compressor Download PDF

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JP4766928B2
JP4766928B2 JP2005170188A JP2005170188A JP4766928B2 JP 4766928 B2 JP4766928 B2 JP 4766928B2 JP 2005170188 A JP2005170188 A JP 2005170188A JP 2005170188 A JP2005170188 A JP 2005170188A JP 4766928 B2 JP4766928 B2 JP 4766928B2
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shaft
compression mechanism
circumferential groove
housing
rotation shaft
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JP2006342751A (en
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貴士 福室
秀紀 細井
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Sanden Holdings Corp
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Sanden Corp
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本発明は、冷媒ガス圧縮機に関するものである。 The present invention relates to a refrigerant gas compressor.

回転軸と、回転軸により駆動される圧縮機構と、回転軸と圧縮機構とを収容するハウジングと、内周部が回転軸の外周面に摺接し外周部がハウジングの回転軸貫通穴周壁に当接する筒状シール部材を有し回転軸のハウジング貫通部を密封する軸封装置とを備える冷媒ガス圧縮機が特許文献１等に開示されている。
特開２００３−２４６９７６ A rotation shaft, a compression mechanism driven by the rotation shaft, a housing that houses the rotation shaft and the compression mechanism, an inner peripheral portion that is in sliding contact with the outer peripheral surface of the rotation shaft, and an outer peripheral portion that is in contact with the peripheral wall of the rotation shaft through hole of the housing. Patent Document 1 discloses a refrigerant gas compressor including a cylindrical seal member that is in contact with a shaft seal device that seals a housing through portion of a rotary shaft.
JP 2003-246976 A

シール部材内周部と回転軸外周面との摺接部の潤滑を確保するための対策は特許文献１では特に講じられてはいない。従って、前記摺接部が潤滑不足になる可能性がある。
本発明は上記問題に鑑みてなされたものであり、回転軸と、回転軸により駆動される圧縮機構と、回転軸と圧縮機構とを収容するハウジングと、内周部が回転軸の外周面に摺接し外周部がハウジングの回転軸貫通穴周壁に当接する筒状シール部材を有し回転軸のハウジング貫通部を密封する軸封装置とを備える冷媒ガス圧縮機であって、シール部材内周部と回転軸外周面との摺接部の潤滑が確保された圧縮機を提供することを目的とする。 In Patent Document 1, no particular measures are taken to ensure lubrication of the sliding contact portion between the inner peripheral portion of the seal member and the outer peripheral surface of the rotary shaft. Therefore, the sliding contact portion may be insufficiently lubricated.
The present invention has been made in view of the above problems, and includes a rotating shaft, a compression mechanism driven by the rotating shaft, a housing that accommodates the rotating shaft and the compression mechanism, and an inner peripheral portion on the outer peripheral surface of the rotating shaft. A refrigerant gas compressor comprising a cylindrical seal member that is in sliding contact and has an outer peripheral portion that abuts against a peripheral wall of a rotary shaft through-hole of the housing, and a shaft sealing device that seals the housing through-portion of the rotary shaft. An object of the present invention is to provide a compressor in which lubrication of the sliding contact portion between the rotary shaft and the outer peripheral surface of the rotary shaft is ensured.

上記課題を解決するために、本発明においては、回転軸と、回転軸により駆動される圧縮機構と、回転軸と圧縮機構とを収容するハウジングと、内周部が回転軸の外周面に摺接し外周部がハウジングの回転軸貫通穴周壁に当接する筒状シール部材を有し回転軸のハウジング貫通部を密封する軸封装置とを備え、回転軸の筒状シール部材近傍部位に且つ軸封装置よりも圧縮機構寄りに潤滑油を貯留するための周溝が形成されており、周溝の底面が段差を形成して、周溝の軸封装置寄りの部位が、圧縮機構寄りの部位よりも浅いことを特徴とする冷媒ガス圧縮機を提供する。
また本発明においては、回転軸と、回転軸により駆動される圧縮機構と、回転軸と圧縮機構とを収容するハウジングと、内周部が回転軸の外周面に摺接し外周部がハウジングの回転軸貫通穴周壁に当接する筒状シール部材を有し回転軸のハウジング貫通部を密封する軸封装置とを備え、回転軸の筒状シール部材近傍部位に且つ軸封装置よりも圧縮機構寄りに潤滑油を貯留するための周溝が形成されており、周溝の底面が圧縮機構寄りの端部から軸封装置寄りの端部まで斜面を形成して、周溝の軸封装置寄りの部位が、圧縮機構寄りの部位よりも浅いことを特徴とする冷媒ガス圧縮機を提供する。
In order to solve the above problems, in the present invention, a rotating shaft, a compression mechanism driven by the rotating shaft, a housing that houses the rotating shaft and the compression mechanism, and an inner peripheral portion slide on the outer peripheral surface of the rotating shaft. And a shaft sealing device that has a cylindrical seal member that is in contact with and abuts against the peripheral wall of the rotation shaft through hole of the housing, and seals the housing penetration portion of the rotation shaft. A circumferential groove for storing lubricating oil is formed closer to the compression mechanism than the device, the bottom surface of the circumferential groove forms a step, and the portion of the circumferential groove closer to the shaft seal device is more than the portion closer to the compression mechanism. The refrigerant gas compressor is characterized by being shallow.
In the present invention, the rotating shaft, the compression mechanism driven by the rotating shaft, the housing that houses the rotating shaft and the compression mechanism, the inner peripheral portion is in sliding contact with the outer peripheral surface of the rotating shaft, and the outer peripheral portion is the rotation of the housing. A shaft sealing device that has a cylindrical seal member that abuts the peripheral wall of the shaft through hole and seals the housing through portion of the rotary shaft, and is located near the cylindrical seal member of the rotary shaft and closer to the compression mechanism than the shaft seal device. A circumferential groove for storing lubricating oil is formed, and the bottom surface of the circumferential groove forms a slope from the end near the compression mechanism to the end near the shaft sealing device, and the portion of the circumferential groove near the shaft sealing device However, the refrigerant gas compressor is characterized in that it is shallower than the portion near the compression mechanism.

本発明に係る冷媒ガス圧縮機においては、回転軸の筒状シール部材近傍部位に且つ軸封装置よりも圧縮機構寄りに形成された周溝が潤滑油溜まりとなり、当該潤滑油溜まりから供給された潤滑油がシール部材内周部と回転軸外周面との摺接部を潤滑する。この結果、シール部材内周部と回転軸外周面との摺接部の潤滑が確保される。In the refrigerant gas compressor according to the present invention, the circumferential groove formed near the cylindrical seal member of the rotating shaft and closer to the compression mechanism than the shaft seal device becomes a lubricating oil reservoir, and is supplied from the lubricating oil reservoir. The lubricating oil lubricates the sliding contact portion between the inner peripheral portion of the seal member and the outer peripheral surface of the rotary shaft. As a result, lubrication of the sliding contact portion between the inner peripheral portion of the seal member and the outer peripheral surface of the rotating shaft is ensured.

周溝の底面が段差を形成して、或いは周溝の底面が圧縮機構寄りの端部から軸封装置寄りの端部まで斜面を形成して、周溝の軸封装置寄りの部位が、圧縮機構寄りの部位よりも浅いので、周溝が形成する潤滑油溜まりからシール部材への潤滑油の導出がスムーズになる。The bottom surface of the circumferential groove forms a step, or the bottom surface of the circumferential groove forms a slope from the end near the compression mechanism to the end near the shaft seal device, and the portion of the circumferential groove near the shaft seal device is compressed. Since it is shallower than the portion near the mechanism, the lubricating oil can be smoothly led out from the lubricating oil reservoir formed by the circumferential groove to the sealing member.

本発明に係る冷媒ガス圧縮機においては、回転軸の筒状シール部材近傍部位に且つ軸封装置よりも圧縮機構寄りに形成された周溝が潤滑油溜まりとなり、当該潤滑油溜まりから供給された潤滑油がシール部材内周部と回転軸外周面との摺接部を潤滑する。この結果、シール部材内周部と回転軸外周面との摺接部の潤滑が確保される。
周溝の底面が段差を形成して、或いは周溝の底面が圧縮機構寄りの端部から軸封装置寄りの端部まで斜面を形成して、周溝の軸封装置寄りの部位が、圧縮機構寄りの部位よりも浅いので、周溝が形成する潤滑油溜まりからシール部材への潤滑油の導出がスムーズになる。
In the refrigerant gas compressor according to the present invention, the circumferential groove formed near the cylindrical seal member of the rotating shaft and closer to the compression mechanism than the shaft seal device becomes a lubricating oil reservoir, and is supplied from the lubricating oil reservoir. The lubricating oil lubricates the sliding contact portion between the inner peripheral portion of the seal member and the outer peripheral surface of the rotary shaft. As a result, lubrication of the sliding contact portion between the inner peripheral portion of the seal member and the outer peripheral surface of the rotating shaft is ensured.
The bottom surface of the circumferential groove forms a step, or the bottom surface of the circumferential groove forms a slope from the end near the compression mechanism to the end near the shaft seal device, and the portion of the circumferential groove near the shaft seal device is compressed. Since it is shallower than the portion near the mechanism, the lubricating oil can be smoothly led out from the lubricating oil reservoir formed by the circumferential groove to the sealing member.

本発明の実施例に係る斜板式冷媒ガス圧縮機を説明する。 A swash plate type refrigerant gas compressor according to an embodiment of the present invention will be described.

図１に示すように、冷媒ガスを吸入圧縮する可変容量型斜板式圧縮機Ａは、回転軸１０と、回転軸１０に固定されたローター１１と、傾角可変に回転軸１０に支持された斜板１２とを備えている。斜板１２は、斜板１２の傾角変動を許容するリンク機構１３を介してローター１１に連結され、ローター１１ひいては回転軸１０に同期して回転する。
斜板１２の周縁部に摺接する一対のシュー１４を介してピストン１５が斜板１２に係留されている。
ピストン１５は、シリンダブロック１６に形成されたボア１６ａに挿入されている。
斜板１２、シュー１４、ピストン１５、シリンダボア１６ａは、回転軸１０により駆動される圧縮機構を形成している。
回転軸１０、ローター１１、斜板１２を収容するクランク室１７を形成する有底円筒状のフロントハウジング１８が配設されている。回転軸１０は、フロントハウジング１８を貫通して外部へ延びている。 As shown in FIG. 1, a variable capacity swash plate compressor A for sucking and compressing refrigerant gas includes a rotating shaft 10, a rotor 11 fixed to the rotating shaft 10, and a tilting shaft supported by the rotating shaft 10 with a variable tilt angle. And a plate 12. The swash plate 12 is connected to the rotor 11 via a link mechanism 13 that allows the tilt angle of the swash plate 12 to vary, and rotates in synchronization with the rotor 11 and thus the rotating shaft 10.
A piston 15 is moored to the swash plate 12 via a pair of shoes 14 that are in sliding contact with the peripheral edge of the swash plate 12.
The piston 15 is inserted into a bore 16 a formed in the cylinder block 16.
The swash plate 12, the shoe 14, the piston 15, and the cylinder bore 16a form a compression mechanism that is driven by the rotary shaft 10.
A bottomed cylindrical front housing 18 that forms a crank chamber 17 that houses the rotating shaft 10, the rotor 11, and the swash plate 12 is disposed. The rotating shaft 10 extends through the front housing 18 to the outside.

回転軸１０のフロントハウジング貫通部を密封する軸封装置１９が配設されている。図２に示すように、軸封装置１９は、リップシール部材１９ａ、１９ｂと、リップシール部材１９ａ、１９ｂを保持固定する保持金具１９ｃ、１９ｄとを有している。
クランク室１７寄りに配設されたリップシール部材１９ａは、平行部と皿バネ形状部とを有する筒状の、耐磨耗性、耐熱性素材である水素化ニトリルゴム（ＨＮＢＲ）を主原料とするゴム成形体である。皿バネ形状部の内周部の一端は、回転軸１０の外周面に摺接している。平行部の外周部は、フロントハウジング１８の回転軸貫通穴の周壁に当接している。リップシール部材１９ａの皿バネ形状部の他端は保持金具１９ｃ、１９ｄにより保持されおり、リップシール部材１９ａ平行部は保持金具１９ｃとフロントハウジング１８とにより保持されている。
回転軸１０の端部寄りに配設されたリップシール部材１９ｂは、皿バネ形状を有するポリテトラフルオロエチレン（ＰＴＦＥ）等から成る樹脂成形体である。リップシール部材１９ｂの一端は回転軸１０の周側面に摺接し、他端は保持金具１９ｃ、１９ｄにより保持されている。
リップシール部材１９ａの皿バネ形状部とリップシール部材１９ｂとは、回転軸１０のフロントハウジング貫通部へ組付けられる前は、図２に二点鎖線で示すように径方向内方へ延在しているが、組み付け後は、回転軸１０の周側面に押し付けられて前記周側面に摺接し、回転軸１０のフロントハウジング貫通部をシールする。
リップシール部材１９ａの平行部の外周部はフロントハウジング１８の回転軸貫通穴の周壁に当接して、回転軸１０のフロントハウジング貫通部をシールする。 A shaft seal device 19 for sealing the front housing through portion of the rotary shaft 10 is disposed. As shown in FIG. 2, the shaft seal device 19 includes lip seal members 19a and 19b and holding metal fittings 19c and 19d for holding and fixing the lip seal members 19a and 19b.
The lip seal member 19a disposed near the crank chamber 17 is made of hydrogenated nitrile rubber (HNBR), which is a cylindrical, wear-resistant, heat-resistant material having a parallel part and a disc spring-shaped part. This is a rubber molded body. One end of the inner peripheral portion of the disc spring-shaped portion is in sliding contact with the outer peripheral surface of the rotating shaft 10. The outer peripheral portion of the parallel portion is in contact with the peripheral wall of the rotation shaft through hole of the front housing 18. The other end of the disc spring-shaped portion of the lip seal member 19a is held by holding metal fittings 19c and 19d, and the parallel portion of the lip seal member 19a is held by the holding metal fitting 19c and the front housing 18.
The lip seal member 19b disposed near the end of the rotating shaft 10 is a resin molded body made of polytetrafluoroethylene (PTFE) or the like having a disc spring shape. One end of the lip seal member 19b is in sliding contact with the peripheral side surface of the rotary shaft 10, and the other end is held by holding metal fittings 19c and 19d.
The disc spring-shaped portion of the lip seal member 19a and the lip seal member 19b extend radially inward as shown by a two-dot chain line in FIG. 2 before being assembled to the front housing through portion of the rotary shaft 10. However, after assembling, it is pressed against the peripheral side surface of the rotating shaft 10 and slidably contacts with the peripheral side surface to seal the front housing penetrating portion of the rotating shaft 10.
The outer peripheral portion of the parallel portion of the lip seal member 19a is in contact with the peripheral wall of the rotary shaft through hole of the front housing 18 to seal the front housing through portion of the rotary shaft 10.

回転軸１０のリップシール部材１９ａ近傍部位に、且つ軸封装置１９よりもクランク室１７ひいては圧縮機構寄りに、周溝１０ａが形成されている。周溝１０ａの底面が段差を形成することにより、周溝１０ａの軸封装置１９寄りの部位１０ａ’は、圧縮機構寄りの部位１０ａ”よりも浅く形成されている。 A circumferential groove 10a is formed near the lip seal member 19a of the rotary shaft 10 and closer to the crank chamber 17 and thus closer to the compression mechanism than the shaft seal device 19 is. Since the bottom surface of the circumferential groove 10a forms a step, the portion 10a 'near the shaft seal device 19 of the circumferential groove 10a is formed shallower than the portion 10a "near the compression mechanism.

フロントハウジング１８に取りつけられた電磁クラッチ２０を介して図示しない外部駆動源から回転軸１０の先端部に回転動力が伝達される。
吸入室と吐出室とを形成するシリンダヘッド２１が配設されている。
シリンダブロック１６とシリンダヘッド２１との間にボア１６ａに連通する吸入穴と吐出穴とが形成された弁板２２が配設されている。 Rotational power is transmitted from an external drive source (not shown) to the tip of the rotary shaft 10 via an electromagnetic clutch 20 attached to the front housing 18.
A cylinder head 21 that forms a suction chamber and a discharge chamber is disposed.
A valve plate 22 having a suction hole and a discharge hole communicating with the bore 16 a is disposed between the cylinder block 16 and the cylinder head 21.

フロントハウジング１８、シリンダブロック１６、弁板２２、シリンダヘッド２１は、ボルト２３により一体に組み付けられている。
回転軸１０はフロントハウジング１８、シリンダブロック１６により回転可能に支持されている。 The front housing 18, the cylinder block 16, the valve plate 22, and the cylinder head 21 are assembled together by bolts 23.
The rotary shaft 10 is rotatably supported by a front housing 18 and a cylinder block 16.

可変容量型斜板式圧縮機Ａにおいては、図示しない外部駆動源の回転動力が電磁クラッチ２０を介して回転軸１０に伝達され、回転軸１０の回転がローター１１、リンク機構１３を介して斜板１２に伝達される。斜板１２の回転に伴う斜板１２周縁部の回転軸１０延在方向の往復動が、シュー１４を介してピストン１５に伝達され、ピストン１５がボア１６ａ内で往復動する。外部冷凍回路から還流した冷媒が、シリンダヘッド２１に形成された吸入ポートと吸入室と吸入穴と図示しない吸入弁とを介してボア１６ａへ吸入され、ボア１６ａ内で圧縮され、吐出穴と図示しない吐出弁と吐出室とシリンダヘッド２１に形成された吐出ポートとを介して外部冷凍回路へ流出する。
軸封装置１９により、回転軸貫通部を介する容量型斜板式圧縮機Ａからの冷媒ガスの漏洩が防止されている。 In the variable capacity swash plate compressor A, the rotational power of an external drive source (not shown) is transmitted to the rotary shaft 10 via the electromagnetic clutch 20, and the rotation of the rotary shaft 10 is transmitted to the swash plate via the rotor 11 and the link mechanism 13. 12 is transmitted. The reciprocating motion in the extending direction of the rotating shaft 10 at the peripheral edge of the swash plate 12 accompanying the rotation of the swash plate 12 is transmitted to the piston 15 via the shoe 14, and the piston 15 reciprocates in the bore 16a. The refrigerant recirculated from the external refrigeration circuit is sucked into the bore 16a through a suction port, a suction chamber, a suction hole, and a suction valve (not shown) formed in the cylinder head 21, and is compressed in the bore 16a. To the external refrigeration circuit through the discharge valve, the discharge chamber, and the discharge port formed in the cylinder head 21.
The shaft seal device 19 prevents the refrigerant gas from leaking from the capacity type swash plate compressor A via the rotating shaft penetrating portion.

可変容量型斜板式圧縮機Ａにおいては、回転軸１０のリップシール部材１９ａ近傍部位に、且つ軸封装置１９よりも圧縮機構寄りに形成された周溝１０ａが潤滑油溜まりとなり、クランク室１７から回転軸１０を伝って流れてきた潤滑油や、冷媒ガスから分離されて回転軸１０に付着した潤滑油を貯留する。当該潤滑油溜まりから供給された潤滑油がリップシール部材１９ａ、１９ｂの内周部と回転軸１０の外周面との摺接部を潤滑する。この結果、リップシール部材１９ａ、１９ｂ内周部と回転軸１０外周面との摺接部の潤滑が確保される。
回転軸１０に周溝１０ａを形成するのは容易なので、コスト増を招くことなく、リップシール部材１９ａ、１９ｂ内周部と回転軸１０外周面との摺接部の潤滑を確保することができる。 In the variable capacity swash plate compressor A, the circumferential groove 10a formed in the vicinity of the lip seal member 19a of the rotary shaft 10 and closer to the compression mechanism than the shaft seal device 19 becomes a lubricating oil reservoir. The lubricating oil that has flowed along the rotating shaft 10 and the lubricating oil that has been separated from the refrigerant gas and adhered to the rotating shaft 10 are stored. Lubricating oil supplied from the lubricating oil reservoir lubricates the sliding contact portion between the inner peripheral portions of the lip seal members 19 a and 19 b and the outer peripheral surface of the rotary shaft 10. As a result, lubrication of the sliding contact portion between the inner peripheral portions of the lip seal members 19a and 19b and the outer peripheral surface of the rotary shaft 10 is ensured.
Since it is easy to form the circumferential groove 10a in the rotating shaft 10, it is possible to ensure lubrication of the sliding contact portion between the inner peripheral portions of the lip seal members 19a and 19b and the outer peripheral surface of the rotating shaft 10 without increasing the cost. .

周溝１０ａの軸封装置１９寄りの部位１０ａ’を、圧縮機構寄りの部位１０ａ”よりも浅くすることにより、周溝１０ａが形成する潤滑油溜まりからリップシール部材１９ａ、１９ｂへの潤滑油の導出がスムーズになる。
周溝１０ａの底面に段差を形成することにより、容易に、周溝１０ａの軸封装置１９寄りの部位１０ａ’を、圧縮機構寄りの部位１０ａ”よりも浅くすることができる。 By making the portion 10a ′ of the circumferential groove 10a near the shaft seal device 19 shallower than the portion 10a ″ near the compression mechanism, the lubricating oil from the lubricating oil reservoir formed by the circumferential groove 10a to the lip seal members 19a and 19b Derivation is smooth.
By forming a step on the bottom surface of the circumferential groove 10a, the portion 10a ′ of the circumferential groove 10a near the shaft seal device 19 can be easily made shallower than the portion 10a ″ near the compression mechanism.

周溝１０ａの底面に段差を形成するのに代えて、周溝１０ａの底面を斜面にすることにより、周溝１０ａの軸封装置１９寄りの部位１０ａ’を、圧縮機構寄りの部位１０ａ”よりも浅くしても良い。 Instead of forming a step on the bottom surface of the circumferential groove 10a, the bottom surface of the circumferential groove 10a is sloped so that the portion 10a 'of the circumferential groove 10a near the shaft seal device 19 is more than the portion 10a "near the compression mechanism. Can be shallow.

本発明は斜板式圧縮機のみならず、冷媒ガスを吸引圧縮する全ての形式の圧縮機に広く利用可能である。 The present invention is widely applicable not only to swash plate compressors but also to all types of compressors that suck and compress refrigerant gas.

本発明の実施例に係る可変容量型斜板式圧縮機の断面図である。1 is a cross-sectional view of a variable capacity swash plate compressor according to an embodiment of the present invention. 本発明の実施例に係る可変容量型斜板式圧縮機の部分拡大断面図である。1 is a partially enlarged cross-sectional view of a variable capacity swash plate compressor according to an embodiment of the present invention.

符号の説明Explanation of symbols

Ａ 可変容量型斜板式圧縮機
１０ 回転軸
１０ａ 周溝
１１ ローター
１２ 斜板
１３ リンク機構
１４ シュー
１５ ピストン
１８ フロントハウジング
１９ 軸封装置
１９ａ、１９ｂ リップシール部材 A Variable displacement swash plate compressor 10 Rotating shaft 10a Circumferential groove 11 Rotor 12 Swash plate 13 Link mechanism 14 Shoe 15 Piston 18 Front housing 19 Shaft seal device 19a, 19b Lip seal member

Claims (2)

回転軸と、回転軸により駆動される圧縮機構と、回転軸と圧縮機構とを収容するハウジングと、内周部が回転軸の外周面に摺接し外周部がハウジングの回転軸貫通穴周壁に当接する筒状シール部材を有し回転軸のハウジング貫通部を密封する軸封装置とを備え、回転軸の筒状シール部材近傍部位に且つ軸封装置よりも圧縮機構寄りに潤滑油を貯留するための周溝が形成されており、周溝の底面が段差を形成して、周溝の軸封装置寄りの部位が、圧縮機構寄りの部位よりも浅いことを特徴とする冷媒ガス圧縮機。 A rotation shaft, a compression mechanism driven by the rotation shaft, a housing that houses the rotation shaft and the compression mechanism, an inner peripheral portion that is in sliding contact with the outer peripheral surface of the rotation shaft, and an outer peripheral portion that is in contact with the peripheral wall of the rotation shaft through hole of the housing. A shaft seal device that has a cylindrical seal member in contact with the shaft and seals the housing through-hole of the rotary shaft, and stores lubricating oil in a portion near the cylindrical seal member of the rotary shaft and closer to the compression mechanism than the shaft seal device. The refrigerant gas compressor is characterized in that a circumferential groove is formed, a bottom surface of the circumferential groove forms a step, and a portion of the circumferential groove near the shaft seal device is shallower than a portion near the compression mechanism. 回転軸と、回転軸により駆動される圧縮機構と、回転軸と圧縮機構とを収容するハウジングと、内周部が回転軸の外周面に摺接し外周部がハウジングの回転軸貫通穴周壁に当接する筒状シール部材を有し回転軸のハウジング貫通部を密封する軸封装置とを備え、回転軸の筒状シール部材近傍部位に且つ軸封装置よりも圧縮機構寄りに潤滑油を貯留するための周溝が形成されており、周溝の底面が圧縮機構寄りの端部から軸封装置寄りの端部まで斜面を形成して、周溝の軸封装置寄りの部位が、圧縮機構寄りの部位よりも浅いことを特徴とする冷媒ガス圧縮機。 A rotation shaft, a compression mechanism driven by the rotation shaft, a housing that houses the rotation shaft and the compression mechanism, an inner peripheral portion that is in sliding contact with the outer peripheral surface of the rotation shaft, and an outer peripheral portion that is in contact with the peripheral wall of the rotation shaft through hole of the housing. A shaft seal device that has a cylindrical seal member in contact with the shaft and seals the housing through-hole of the rotary shaft, and stores lubricating oil in a portion near the cylindrical seal member of the rotary shaft and closer to the compression mechanism than the shaft seal device. A circumferential groove is formed from the end near the compression mechanism to the end near the shaft sealing device, and the portion of the circumferential groove near the shaft sealing device is near the compression mechanism. A refrigerant gas compressor characterized by being shallower than the part.
JP2005170188A 2005-06-09 2005-06-09 Refrigerant gas compressor Expired - Fee Related JP4766928B2 (en)

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JP4766928B2 true JP4766928B2 (en) 2011-09-07

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JP2008232014A (en) * 2007-03-20 2008-10-02 Sanden Corp Compressor

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US5884727A (en) * 1996-07-01 1999-03-23 Samsung Electronics Co., Ltd. Hermetic compressor with start-up lubrication
JP2000297757A (en) * 1999-04-14 2000-10-24 Sanden Corp Compressor
JP4078229B2 (en) * 2002-03-20 2008-04-23 カルソニックカンセイ株式会社 Compressor
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