JP3226141B2 - Valve device of positive displacement compressor - Google Patents
Valve device of positive displacement compressorInfo
- Publication number
- JP3226141B2 JP3226141B2 JP31671093A JP31671093A JP3226141B2 JP 3226141 B2 JP3226141 B2 JP 3226141B2 JP 31671093 A JP31671093 A JP 31671093A JP 31671093 A JP31671093 A JP 31671093A JP 3226141 B2 JP3226141 B2 JP 3226141B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hole
- seat surface
- reed
- valve seat
- 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
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、容積型圧縮機の弁装置
に係り、詳しくは圧力変動並びに振動騒音の低減を図っ
た弁装置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device for a positive displacement compressor, and more particularly to an improvement in a valve device for reducing pressure fluctuation and vibration noise.
【０００２】[0002]
【従来の技術】主として冷凍用に供されている容積型圧
縮機は、機内の低圧域及び高圧域と圧縮室とが通孔によ
って連通されており、往復式圧縮機においてはその双方
の通孔を開閉する吸入弁及び吐出弁が設けられ、回転式
圧縮機においても圧縮室と高圧域とを連通する通孔には
同様な吐出弁が配設されている。なお、かかる弁体には
通常差圧によって同通孔を開閉する単体若しくは複合体
形式のリード弁が多用されている。2. Description of the Related Art In a positive displacement compressor mainly used for refrigeration, a low-pressure region and a high-pressure region in the device are communicated with a compression chamber through through holes. A suction valve and a discharge valve for opening and closing the compressor are provided. In a rotary compressor, a similar discharge valve is provided in a through hole communicating the compression chamber with the high-pressure region. In addition, a single or composite reed valve that opens and closes the through hole by a differential pressure is often used for such a valve body.
【０００３】図５は広く車両空調用に供されている往復
式圧縮機のリヤ部分を例示するもので、複数の圧縮室
（ボア）１ａを並設したシリンダブロック１の外端は弁
板２を挟んでハウジング３により封塞され、弁板２には
ハウジング３内に形成された吸入室（低圧域）４及び吐
出室（高圧域）５と圧縮室１ａとをれぞれ連通する通
孔、つまり吸入孔４ａ及び吐出孔５ａが貫設されてい
る。そして同弁板２の一方の弁座面とシリンダブロック
１との間には、各吸入孔４ａに対応する複数のリード弁
６ａを備えた吸入弁体６が介装され、また、吐出室５内
に露出した弁板２の他方の弁座面上には、各吐出孔５ａ
と対応する複数のリード弁７ａを備えた吐出弁体７が装
着されており、これらリード弁６ａ及び７ａの開弁（撓
曲）限界は、圧縮室１ａの口端に設けられた切欠き８及
び吐出弁体７と共締めされたリテーナ９によってそれぞ
れ規制されている。FIG. 5 illustrates a rear portion of a reciprocating compressor widely used for vehicle air conditioning. An outer end of a cylinder block 1 having a plurality of compression chambers (bore) 1a arranged side by side is a valve plate 2. The valve plate 2 is closed with a suction hole (low-pressure area) 4 and a discharge chamber (high-pressure area) 5 formed in the housing 3 and a communication hole with the compression chamber 1a. That is, the suction hole 4a and the discharge hole 5a are provided through. A suction valve element 6 having a plurality of reed valves 6a corresponding to the respective suction holes 4a is interposed between one valve seat surface of the valve plate 2 and the cylinder block 1. Each discharge hole 5a is provided on the other valve seat surface of the valve plate 2 exposed inside.
And a discharge valve element 7 having a plurality of reed valves 7a corresponding to the first and second reed valves 7a. The reed valves 6a and 7a have a valve opening (flexing) limit defined by a notch 8 provided at the mouth end of the compression chamber 1a. And a retainer 9 fastened together with the discharge valve body 7.
【０００４】このように各リード弁６ａ、７ａは、吸入
孔４ａ及び吐出孔５ａが開口される各弁座面に着座して
圧縮室１ａとの相対的な差圧により開閉されるが、同弁
座面はリード弁６ａ、７ａとの密合性の確保やこれを挟
着するシリンダブロック１及びハウジング３との封止性
を配慮する必要から、一般に表面粗さが２〜３μｍＲＺ
程度という極めて平滑な状態に仕上げられている。As described above, each of the reed valves 6a and 7a is seated on each valve seat surface where the suction hole 4a and the discharge hole 5a are opened, and is opened and closed by a relative pressure difference with the compression chamber 1a. The valve seat surface generally has a surface roughness of 2 to 3 μm RZ because it is necessary to ensure the tightness with the reed valves 6 a and 7 a and to consider the sealing performance with the cylinder block 1 and the housing 3 that sandwich the valve.
It is finished in an extremely smooth state of the order.
【０００５】[0005]
【発明が解決しようとする課題】圧縮機内を流動する冷
媒ガス中には微細な潤滑油粒が混在されており、上記弁
座面やリード弁６ａ、７ａは共に潤滑油粒が被着する環
境におかれている。そして上述のごとき極めて平滑度の
高い弁座面に着座した閉弁状態のリード弁６ａ、７ａ
は、いずれも吸入孔４ａ、吐出孔５ａの開口全周域を平
面的な接触によって封塞しているため、その開弁時にお
いてもかかる封塞域に介在する潤滑油の主として表面張
力により、同弁座面にかなり強く密着せしめられてい
る。The refrigerant gas flowing in the compressor contains fine lubricating oil particles, and the valve seat surface and the reed valves 6a and 7a are both in an environment where the lubricating oil particles adhere. Have been placed. The reed valves 6a, 7a in the closed state seated on the valve seat surface having extremely high smoothness as described above.
Both of them seal the entire peripheral area of the opening of the suction hole 4a and the discharge hole 5a by planar contact, so even when the valve is opened, mainly due to the surface tension of the lubricating oil interposed in the sealed area. It is tightly attached to the valve seat surface.
【０００６】したがって、リード弁６ａ、７ａは圧縮室
１ａ内の圧力が所定の開弁圧力に加算された上記潤滑油
の表面張力に打勝つまで開弁に抵抗し、開弁と同時に冷
媒ガスの急激な吸入又は吐出が一挙に開始される。その
結果、単なる吸入圧損や過圧縮のみにとどまらず、その
瞬発的な圧力波と開弁規制面に激突するリード弁６ａ、
７ａの衝撃振動波とが複合されて騒音を誘起し、特に車
両空調用に供される圧縮機では、かかる騒音が運転環境
を阻害する重大な要因として、かねてより指摘されてい
るのが実情である。Accordingly, the reed valves 6a and 7a resist opening until the pressure in the compression chamber 1a overcomes the surface tension of the lubricating oil added to the predetermined valve opening pressure. Sudden suction or discharge is started at once. As a result, the reed valve 6a which collides with not only the suction pressure loss and the overcompression but also the instantaneous pressure wave and the valve opening regulation surface,
The impact vibration wave of 7a is combined to induce noise, and in particular, in compressors used for vehicle air conditioning, such noise has long been pointed out as a serious factor impeding the driving environment. is there.
【０００７】本発明は、効果的に騒音を低減しうる弁装
置の創出を解決すべき技術課題とするものである。An object of the present invention is to provide a valve device capable of effectively reducing noise.
【０００８】[0008]
【課題を解決するための手段】本発明は上記課題解決の
ため、機内の低圧域及び高圧域と圧縮室とをそれぞれ連
通する通孔を有し、少なくとも弁座面に開口する該通孔
を差圧によって開閉するリード弁を備えた容積型圧縮機
において、上記弁座面上に該リード弁の弾性撓曲によっ
て該通孔を閉鎖させる干渉段差部を設けた新規な構成を
採用している。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a through-hole for communicating a low-pressure area and a high-pressure area in a machine with a compression chamber, respectively. A positive displacement compressor having a reed valve that opens and closes by a differential pressure employs a novel configuration in which an interference step is provided on the valve seat surface to close the through hole by elastic bending of the reed valve. .
【０００９】本発明の好適な形態として、上記干渉段差
部は、上記通孔を跨いだ開弁軸方向の少なくとも一方側
に配設されており、さらに該干渉段差部は該弁座面に被
覆された樹脂皮膜若しくは密合された薄板材によって形
成されるか、又は該弁座面を直接凹刻することによって
形成される。In a preferred embodiment of the present invention, the interference step is provided on at least one side in the valve opening axial direction across the through hole, and the interference step covers the valve seat surface. It is formed by a coated resin film or a laminated sheet material, or is formed by directly engraving the valve seat surface.
【００１０】[0010]
【作用】本発明の弁装置においては、弁座面上にリード
弁の弾性撓曲によって通孔を閉鎖させる干渉段差部が設
けられているため、無負荷時のリード弁は基端側が干渉
段差部の上面に載置されて伸直した常態を保つか、又は
先端側の一部のみが干渉段差部のコーナーに乗り上げた
微変形状態におかれており、いずれの形態においても通
孔の完全閉鎖は該干渉段差部の存在によって妨げられて
いる。In the valve device according to the present invention, an interference step is provided on the valve seat surface to close the through hole by the elastic bending of the reed valve. It is placed on the upper surface of the part and keeps its normal state, or only a part of the tip side is placed in a slightly deformed state riding on the corner of the interference step, and in any case, the through hole is completely Closure is hindered by the presence of the interference step.
【００１１】しかし、ひとたび圧縮室との相対的な差圧
がリード弁を閉じる向きに作用すると、該リード弁は直
ちに撓曲して通孔の全開口周縁と衝接し、該通孔を完全
に閉鎖する。なお、このようなリード弁の撓曲に伴って
行われる通孔の閉鎖は、開口周辺の封塞域にリード弁の
平面的な密合を生じさせないので、潤滑油の表面張力に
基づく開弁抵抗は極端に減殺される。その後圧縮室との
相対的な差圧が反転してリード弁の開弁圧力に達する
と、ほとんど無視しうる程度に消失した表面張力の影響
に加えて、上記撓曲姿勢からの復元反力が効果的にリー
ド弁の開弁を助勢するため、瞬発的な冷媒ガスの圧力波
や開弁規制面との衝突振動波は巧みに減衰される。However, once the pressure difference relative to the compression chamber acts in the direction to close the reed valve, the reed valve immediately bends and abuts the entire opening rim of the through hole to completely close the through hole. To close. Note that the closing of the through hole performed in association with such bending of the reed valve does not cause the reed valve to be two-dimensionally tightly closed in the closed area around the opening, so that the valve is opened based on the surface tension of the lubricating oil. Resistance is greatly reduced. After that, when the relative pressure difference between the compression chamber and the reversing valve reaches the valve opening pressure of the reed valve, in addition to the effect of the surface tension which has disappeared to a negligible extent, the restoring reaction force from the above-mentioned bending posture is increased. In order to effectively assist the opening of the reed valve, the instantaneous refrigerant gas pressure wave and the collision vibration wave with the valve opening regulating surface are skillfully attenuated.
【００１２】[0012]
【実施例】以下、図に基づいて本発明の実施例を具体的
に説明する。図１〜図３は、図５に例示した往復式圧縮
機の弁板２部分と、該弁板２の一方の弁座面２ａ上に装
着された吐出弁体７を示しており、該吐出弁体７を構成
する複数のリード弁７ａは、弁座面２ａに開口された通
孔（吐出孔）５ａを、圧縮室１ａと高圧域（吐出室）５
との相対的な差圧に応じて周期的に開閉するものであ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. FIGS. 1 to 3 show a valve plate 2 portion of the reciprocating compressor illustrated in FIG. 5 and a discharge valve element 7 mounted on one valve seat surface 2 a of the valve plate 2. The plurality of reed valves 7a constituting the valve body 7 are provided with a through hole (discharge hole) 5a opened in the valve seat surface 2a and a compression chamber 1a and a high pressure region (discharge chamber) 5a.
It opens and closes periodically in accordance with the relative pressure difference between.
【００１３】さて、本実施例の上記弁座面２ａには例え
ばフッ素系の樹脂皮膜１０が被覆されており、０．１〜
０．２ｍｍ程度の膜厚を有する該樹脂皮膜１０は、各通
孔５ａの周辺を包括する環状の領域Ｐのみが欠落された
形態で構成されている。すなわち、各通孔５ａを跨いだ
開弁軸Ｘ−Ｘ方向の両側には、該樹脂皮膜１０の膜厚に
よって弁座面２ａとリード弁７ａとの平面的な接触を妨
げる干渉段差部Ｐ1 、Ｐ2 が形成されている。なお、通
孔５ａの開口縁から各干渉段差部Ｐ1 、Ｐ2 までの距離
及びリード弁７ａの先端から干渉段差部Ｐ1 までの距離
は、リード弁７ａの板厚や撓み特性に基づいて適宜選択
される。The valve seat surface 2a of this embodiment is coated with, for example, a fluorine-based resin film 10 and has a thickness of 0.1 to 0.1%.
The resin film 10 having a thickness of about 0.2 mm is configured such that only an annular region P covering the periphery of each through hole 5a is missing. That is, on both sides in the valve opening axis XX direction straddling each through hole 5a, an interference step portion P 1 that prevents planar contact between the valve seat surface 2a and the reed valve 7a due to the thickness of the resin film 10 is provided. , P 2 is formed. The distance from the opening edge of the through hole 5a to each of the interference step portions P 1 and P 2 and the distance from the tip of the reed valve 7a to the interference step portion P 1 are determined based on the thickness and bending characteristics of the reed valve 7a. It is appropriately selected.
【００１４】本実施例は上述のように構成されており、
無負荷時のリード弁７ａは先端側及び基端側の双方が干
渉段差部Ｐ1 、Ｐ2 を形成する樹脂皮膜１０上に載置さ
れて伸直した常態に保持されており、上記弁座面２ａと
の間に形成される微小空隙によって通孔５ａの閉鎖は妨
げられている。そして圧縮機の運転時、圧縮室１ａと高
圧域５との相対的な差圧がリード弁７ａを閉じる向きに
作用すると、該リード弁７ａは干渉段差部Ｐ1 、Ｐ2 を
支点として通孔５ａの求心方向に撓曲し、その開口全周
縁と衝接することにより該通孔５ａを完全に閉鎖する。
このようにリード弁７ａの撓曲に伴って行なわれる通孔
５ａの閉鎖は、開口周辺の弁座面２ａとリード弁７ａと
の間に平面的な密合を生じさせないので、潤滑油の表面
張力に基づいた開弁抵抗は極端に減殺される。その後圧
縮室１ａと高圧域５との相対的な差圧が反転してリード
弁７ａの開弁圧力に達すると、ほとんど無視しうる程度
に消失した表面張力の影響に加えて、上記撓曲姿勢から
の復元反力が効果的にリード弁７ａの開弁を助勢するた
め、瞬発的な冷媒ガスの圧力波や開弁規制面との激突振
動波は巧みに減衰される。This embodiment is configured as described above.
When no load is applied, the reed valve 7a is placed on the resin film 10 forming the interference stepped portions P 1 and P 2 on both the distal end side and the proximal end side, and is held in a stretched normal state. The closing of the through hole 5a is prevented by the minute gap formed between the hole 2a and the surface 2a. During operation of the compressor, when a relative pressure difference between the compression chamber 1a and the high-pressure area 5 acts in a direction to close the reed valve 7a, the reed valve 7a passes through the interference stepped portions P 1 and P 2 as fulcrums. The through hole 5a is completely closed by bending in the centripetal direction of 5a and making contact with the entire periphery of the opening.
The closing of the through hole 5a performed in accordance with the bending of the reed valve 7a does not cause a planar tightness between the valve seat surface 2a around the opening and the reed valve 7a. Valve opening resistance based on tension is extremely reduced. Thereafter, when the relative pressure difference between the compression chamber 1a and the high-pressure area 5 reverses and reaches the valve opening pressure of the reed valve 7a, in addition to the influence of the surface tension which has almost disappeared to a negligible extent, the bending posture The repulsive reaction force effectively assists the opening of the reed valve 7a, so that instantaneous refrigerant gas pressure waves and crash vibration waves with the valve opening regulating surface are skillfully attenuated.
【００１５】図４は、上記弁板２の他方の弁座面２ｂ上
に装着された吸入弁体６を示しており、該吸入弁体６を
構成する複数のリード弁６ａも、弁座面２ｂに開口され
た通孔（吸入孔）４ａを、圧縮室１ａと低圧域（吸入
室）４との相対的な差圧に応じて周期的に開閉するもの
である。そして該弁座面２ｂにも同様に樹脂皮膜１０が
被覆されるが、この場合は弁板２に貫設されている他の
冷媒通路との交錯を避けるため、樹脂皮膜１０の欠落を
各通孔４ａごとに設けた長孔状の領域Ｐ′（図は１か所
のみ示し他は省略）として、やはり通孔４ａを跨いだ開
弁軸Ｘ−Ｘ方向の両側に干渉段差部Ｐ1 、Ｐ2 が形成さ
れている。したがって、該リード弁６ａにおいても先の
リード弁７ａと同様きわめて円滑に動作する。FIG. 4 shows the suction valve body 6 mounted on the other valve seat surface 2b of the valve plate 2. The plurality of reed valves 6a constituting the suction valve body 6 are also provided on the valve seat surface. A through hole (suction hole) 4a opened in 2b is opened and closed periodically according to a relative pressure difference between the compression chamber 1a and the low-pressure area (suction chamber) 4. The resin film 10 is similarly coated on the valve seat surface 2b. In this case, in order to avoid intersecting with other refrigerant passages penetrating through the valve plate 2, the resin film 10 is cut through each of the holes. long hole-shaped region P provided in each hole 4a '(FIG. another is omitted indicates only one location), the interference step portion P 1 on both sides of the still straddling the through hole 4a opening axis X-X direction, P 2 is formed. Therefore, the reed valve 6a operates very smoothly, similarly to the reed valve 7a.
【００１６】なお、上述の実施例において、弁座面２ａ
上に形成した干渉段差部Ｐ1 、Ｐ2の一方のみを残置し
て環状の領域Ｐを廃し、干渉段差部Ｐ1 の内方域又は干
渉段差部Ｐ2 の外方域を全面的に樹脂皮膜１０の欠落領
域としてもよく、勿論、そのような形態であっても残置
された一方の干渉段差部Ｐ1 又はＰ2 によってもたらさ
れるリード弁７ａの弾性撓曲が、通孔７ａの閉鎖に関与
することに変わりはない。また、上記各通孔５ａを包括
する環状の領域Ｐを、上記各通孔４ａごとに設けた長孔
状の領域Ｐ′と同様に形成して実施することもできる。In the above embodiment, the valve seat surface 2a
The annular region P is discarded by leaving only one of the interference step portions P 1 and P 2 formed above, and the inner region of the interference step portion P 1 or the outer region of the interference step portion P 2 is entirely covered with resin. may be a missing region of the film 10, of course, the elastic flexing of such reed valve 7a to be in the form provided by leaving been one of the interference step portion P 1 or P 2 is the closure of the through hole 7a Still involved. Further, the annular region P covering the through holes 5a may be formed in the same manner as the elongated hole region P 'provided for each of the through holes 4a.
【００１７】さらに本発明の他の形態として、上記樹脂
皮膜１０に代え、これと同様の形状を有する鉄系、アル
ミ系の金属若しくは樹脂製の薄板材を弁座面２ａ、２ｂ
に密合すべく構成したり、又は機械加工、プレス加工、
放電加工などにより上記弁座面２ａ、２ｂを直接凹刻
し、弁板２自体に同様な干渉段差部Ｐ1 、Ｐ2 を形成し
て実施することも可能である。In still another embodiment of the present invention, instead of the resin film 10, a thin plate made of an iron-based, aluminum-based metal or resin having the same shape as that of the resin film 10 is used as the valve seat surface 2a, 2b.
Or to be machined, pressed,
EDM the valve seat surface 2a or the like, 2b directly to intaglio, can be implemented by forming the valve plate 2 similar interference stepped portion itself P 1, P 2.
【００１８】[0018]
【発明の効果】以上、詳述したように本発明は、特許請
求の範囲に記載の構成を有するものであるから、次に掲
記する優れた効果を奏する。 （１）吸入圧損及び過圧縮が低減されるので、性能とく
に省動力化に貢献できる。 （２）開弁時の制振性により冷媒ガスの圧力脈動及び弁
振動が良好に減衰されるため、振動騒音障害が著しく改
善されてマフラ機能の装備も消去することができる。 （３）とくに干渉段差部の形成に樹脂系材料を採用した
ものでは、加工の簡易化に加えて閉弁時の衝撃緩和にき
わめて有効である。As described above in detail, since the present invention has the structure described in the claims, the following excellent effects can be obtained. (1) Since suction pressure loss and over-compression are reduced, it is possible to contribute to performance, especially power saving. (2) Since the pressure pulsation of the refrigerant gas and the valve vibration are favorably attenuated due to the vibration damping property when the valve is opened, the vibration noise disturbance is remarkably improved, and the equipment with the muffler function can be eliminated. (3) In particular, when a resin-based material is used for forming the interference step portion, it is extremely effective for simplification of processing and for mitigation of impact when the valve is closed.
【図１】本発明実施例の要部であるリード弁と干渉段差
部との関係を示す断面図。FIG. 1 is a sectional view showing a relationship between a reed valve and an interference step portion, which are main parts of an embodiment of the present invention.
【図２】同じくリード弁と干渉段差部との関係を示す側
面図。FIG. 2 is a side view showing the relationship between a reed valve and an interference step.
【図３】本発明実施例に係る弁板の吐出弁体側を示す側
面図。FIG. 3 is a side view showing a discharge valve body side of the valve plate according to the embodiment of the present invention.
【図４】同じく弁板の吸入弁体側を示す側面図。FIG. 4 is a side view showing the intake valve body side of the valve plate.
【図５】従来の往復式圧縮機のリヤ部分を示す断面図。FIG. 5 is a sectional view showing a rear portion of a conventional reciprocating compressor.
１ａは圧縮室、２は弁板、２ａ、２ｂは弁座面、４は低
圧域（吸入室）、５は高圧域（吐出室）、４ａは通孔
（吸入孔）、５ａは通孔（吐出孔）、６ａ、７ａはリー
ド弁、Ｐ1 、Ｐ2 は干渉段差部1a is a compression chamber, 2 is a valve plate, 2a and 2b are valve seat surfaces, 4 is a low pressure area (suction chamber), 5 is a high pressure area (discharge chamber), 4a is a through hole (suction hole), and 5a is a through hole ( Discharge holes), 6a and 7a are reed valves, P 1 and P 2 are interference steps
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鴻村 哲志 愛知県刈谷市豊田町２丁目１番地 株式 会社豊田自動織機製作所内 (56)参考文献 特開 平１−96479（ＪＰ，Ａ) 実開 平１−127980（ＪＰ，Ｕ) 実開 平２−43573（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F04B 39/10 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tetsushi Komura 2-1-1 Toyota-cho, Kariya-shi, Aichi Prefecture Inside Toyota Industries Corporation (56) References JP-A-1-96479 (JP, A) 1-127980 (JP, U) JP-A-2-43573 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) F04B 39/10
Claims (5)
ぞれ連通する通孔を有し、少なくとも弁座面に開口する
該通孔を差圧によって開閉するリード弁を備えた容積型
圧縮機において、上記弁座面上に該リード弁の弾性撓曲
によって該通孔を閉鎖させる干渉段差部を設けたことを
特徴とする容積型圧縮機の弁装置。1. A positive displacement compression system having a through-hole for communicating a low-pressure area and a high-pressure area in a machine with a compression chamber, and a reed valve for opening and closing at least the through-hole opened on a valve seat surface by a differential pressure. A valve device for a positive displacement compressor, wherein an interference step portion for closing the through hole by elastic bending of the reed valve is provided on the valve seat surface.
軸方向の少なくとも一方側に配設されている請求項１記
載の弁装置。2. The valve device according to claim 1, wherein the interference step is provided on at least one side in the valve opening axial direction across the through hole.
た樹脂皮膜によって形成されている請求項１記載の弁装
置。3. The valve device according to claim 1, wherein the interference step portion is formed by a resin film coated on the valve seat surface.
た薄板材よって形成されている請求項１記載の弁装置。4. The valve device according to claim 1, wherein the interference step portion is formed by a thin plate material closely fitted to the valve seat surface.
することによって形成されている請求項１記載の弁装
置。5. The valve device according to claim 1, wherein the interference step portion is formed by directly indenting the valve seat surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31671093A JP3226141B2 (en) | 1993-12-16 | 1993-12-16 | Valve device of positive displacement compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31671093A JP3226141B2 (en) | 1993-12-16 | 1993-12-16 | Valve device of positive displacement compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07167058A JPH07167058A (en) | 1995-07-04 |
| JP3226141B2 true JP3226141B2 (en) | 2001-11-05 |
Family
ID=18080044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31671093A Expired - Fee Related JP3226141B2 (en) | 1993-12-16 | 1993-12-16 | Valve device of positive displacement compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3226141B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004061306A1 (en) * | 2002-12-27 | 2004-07-22 | Zexel Valeo Climate Control Corporation | Swash plate-type variable displacement compressor for supercritical refrigeration cycle |
| EP3159540A4 (en) * | 2014-06-19 | 2017-10-18 | Panasonic Corporation | Refrigerant compressor and refrigeration appliance using same |
-
1993
- 1993-12-16 JP JP31671093A patent/JP3226141B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07167058A (en) | 1995-07-04 |
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