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JP4902244B2 - Reciprocating compressor - Google Patents

Reciprocating compressor Download PDF

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JP4902244B2
JP4902244B2 JP2006099550A JP2006099550A JP4902244B2 JP 4902244 B2 JP4902244 B2 JP 4902244B2 JP 2006099550 A JP2006099550 A JP 2006099550A JP 2006099550 A JP2006099550 A JP 2006099550A JP 4902244 B2 JP4902244 B2 JP 4902244B2
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valve
reed
fulcrum
valve body
discharge
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JP2007270765A (en
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強 大山
隆二 渡辺
秀明 塚本
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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Priority to US11/407,352 priority patent/US20070231167A1/en
Priority to MXPA06004569A priority patent/MXPA06004569A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10Adaptations or arrangements of distribution members
    • F04B39/1073Adaptations or arrangements of distribution members the members being reed valves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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Description

本発明は、家庭用冷蔵庫の冷媒圧縮用などに使用する往復動型圧縮機に関するものであり、主として、圧縮部の吐出部を開閉する弁装置部分の改良に関するものである。   The present invention relates to a reciprocating compressor used for refrigerant compression of a household refrigerator, and mainly relates to an improvement of a valve device part that opens and closes a discharge part of a compression part.

この種の往復動型圧縮機の概略構成は、図1に示す圧縮機1000のような構造になっている。
図1において、圧縮機1000は、電源101を供給する給電部100からの電力によって駆動する電動機部200に連結した往復圧縮部300により、吸入部600の吸入路601から弁装置500を介して吸入した冷媒流体を圧縮して吐出部700の吐出路701から吐出する構成をもつ組立体を、密閉容器900の内部に緩衝支持部800により弾力的に取り付けて収納してある。
さらに、給油部400によって密閉容器900の底部に貯えた潤滑油401を電動機部200と往復圧縮部300との機械的運動部分に循環して潤滑する構成を設けてある。
上記の圧縮機の構成における各部分の具体的な構造が種々提案されている(特許文献1参照)。
The schematic configuration of this type of reciprocating compressor has a structure like a compressor 1000 shown in FIG.
In FIG. 1, a compressor 1000 is sucked from a suction passage 601 of a suction portion 600 through a valve device 500 by a reciprocating compression portion 300 connected to an electric motor portion 200 driven by electric power from a power feeding portion 100 that supplies a power source 101. An assembly having a configuration in which the refrigerant fluid compressed and discharged from the discharge path 701 of the discharge portion 700 is elastically attached to the inside of the sealed container 900 by the buffer support portion 800 and stored.
Further, the lubricating oil 401 stored at the bottom of the sealed container 900 by the oil supply unit 400 is circulated and lubricated to the mechanical motion portion of the electric motor unit 200 and the reciprocating compression unit 300.
Various specific structures of each part in the configuration of the compressor have been proposed (see Patent Document 1).

そして、ピストンの往復速度は、3,000回/分程度の高速で繰り返すため弁装置500の弁構成に種々の改良が試みられている。例えば、吐出口を開閉するリード弁の背面側に適度の開き角度をもつ厚板の抑制片を設けた弁装置を用いることにより、リード弁の開き度合を制限するとともにリード弁の復帰速度を速めて、圧縮能率を向上するようにした構成が提案されている(特許文献2参照)。   And since the reciprocating speed of the piston repeats at a high speed of about 3,000 times / minute, various improvements have been made to the valve configuration of the valve device 500. For example, by using a valve device that has a thick plate restraining piece with an appropriate opening angle on the back side of the reed valve that opens and closes the discharge port, the reed valve opening degree is restricted and the reed valve return speed is increased. Therefore, a configuration that improves the compression efficiency has been proposed (see Patent Document 2).

さらに、リード弁と、リード弁の背面側に重ね合わせた板ばねの抑制片とを弁座の凹所に配置するとともに、リード弁の吐出口を覆う部分の半分程度を抑制片で覆うようにした弁装置を用いることによって、リード弁が捩れ面をもって開くようにし、この捩れ面によって流体の吐出方向を排出口の方向に向けるとともに、捩れの戻し応力によって閉塞速度を速めるようにし構造が提案されている(特許文献3参照)。
特公平4−4894号公報 実公平2−25986号公報 米国特許第4723896号公報
Furthermore, the reed valve and the restraining piece of the leaf spring superimposed on the back side of the reed valve are arranged in the recess of the valve seat, and about half of the portion covering the discharge port of the reed valve is covered with the restraining piece. By using this valve device, a structure is proposed in which the reed valve is opened with a twisted surface, the fluid discharge direction is directed toward the discharge port by this twisted surface, and the closing speed is increased by the twist return stress. (See Patent Document 3).
Japanese Patent Publication No. 4-4894 Japanese Utility Model Publication No. 2-25986 U.S. Pat. No. 4,723,896

しかしながら、従来の弁装置の弁構成は、いずれも1つの吐出口と、その吐出口を開閉する一つのリード弁とその背面側に設けられる一つの抑制片からなる弁構成を用いているので、こうした弁装置を備えた圧縮機では、吐出抵抗がいまだ高く、この高い吐出抵抗によって圧縮効率が低下する問題があり、改良の余地があった。   However, since the valve configuration of the conventional valve device uses a valve configuration consisting of one discharge port, one reed valve that opens and closes the discharge port, and one suppression piece provided on the back side thereof, In the compressor provided with such a valve device, the discharge resistance is still high, and there is a problem that the compression efficiency is lowered due to the high discharge resistance, and there is room for improvement.

本発明の目的は、吐出口およびリード弁と抑制反発片(以下、バルブバッカーと称す)を複数備えた弁構成を用いて吐出抵抗を低下せしめ、圧縮効率を向上させた弁構成を備えた往復動型圧縮機を提供することである。   SUMMARY OF THE INVENTION An object of the present invention is to provide a reciprocating valve having a valve structure in which a discharge resistance is lowered and a compression efficiency is improved by using a valve structure having a plurality of discharge ports, reed valves, and suppression repulsion pieces (hereinafter referred to as valve backers). It is to provide a dynamic compressor.

上記課題を解消するための本発明の請求項1記載の往復動型圧縮機は、所要の流体を圧縮する往復圧縮部を密閉容器内に収納した往復動型圧縮機において、
前記往復圧縮部は、前記流体を吐出する吐出部と、この吐出部を開閉するとともに、複数の吐出口が形成された弁装置とを備え、
前記弁装置は、前記吐出口に対応して設けられたリード弁と、このリード弁の各々の背面側に配置したバルブバッカーを設けた弁体と、この弁体を収納する凹所を設けた弁座と、前記弁体の各端側を押圧して前記凹所の各固定部分に弾力的に固定する弁体固定手段とを備え、
前記リード弁の形状を、前記固定部分において両脇に張り出した支点部分と、前記支点部分を結ぶ線に対して直角方向ないし斜方向に張り出す途中部分と、前記途中部分を経た他端側にある前記吐出口を閉塞する蓋部分を一体的にした形体に形成するとともに、
前記バルブバッカーの形状を、前記リード弁と同じ支点部分と、前記支点部分を結ぶ線に対して斜方向に張り出す部分を徐々に狭い幅にした途中部分と、前記リード弁の蓋部分よりも狭い幅の他端部分とを一体にした形体に形成し、
一方のリード弁の支点部分と他方のリード弁の支点部分が、各リード弁の蓋部分が中央に位置し、その外側に位置するように各リード弁を配置し、前記バルブバッカーの各途中部分が前記支点部分を結ぶ線に対してそれぞれ異なる方向に位置するように各バルブバッカーを配置することを特徴とする。
The reciprocating compressor according to claim 1 of the present invention for solving the above-mentioned problem is a reciprocating compressor in which a reciprocating compression unit for compressing a required fluid is housed in a sealed container.
The reciprocating compression unit includes a discharge unit that discharges the fluid, and a valve device that opens and closes the discharge unit and includes a plurality of discharge ports.
The valve device is provided with a reed valve provided corresponding to the discharge port, a valve body provided with a valve backer disposed on the back side of each of the reed valves, and a recess for storing the valve body. e Bei a valve seat, a valve body fixing means resiliently secured to the fixed portion of the recess by pressing the respective end side of the valve body,
The shape of the reed valve is such that a fulcrum portion projecting on both sides in the fixed portion, a middle portion projecting in a direction perpendicular to or oblique to a line connecting the fulcrum portions, and the other end side through the middle portion. While forming a lid portion that closes a certain discharge port into an integrated shape,
The shape of the valve backer is the same fulcrum part as the reed valve, a middle part gradually narrowing a part protruding obliquely with respect to a line connecting the fulcrum parts, and a lid part of the reed valve Formed into an integrated shape with the other end of the narrow width,
Each reed valve is arranged so that the fulcrum part of one reed valve and the fulcrum part of the other reed valve are located at the center and the lid part of each reed valve, and each middle part of the valve backer. The valve backers are arranged so that each is positioned in a different direction with respect to a line connecting the fulcrum portions.

本発明の請求項2記載の往復動型圧縮機は、請求項1記載の往復動型圧縮機において、
前記弁体固定手段が、前記各弁体の支点部分を前記凹所の各固定部分に固定するための固定部と、各固定部を連結しかつ前記各弁体の支点部分を前記凹所の各固定部分に弾力的に押圧するためのバネ部を一体的にした形体に形成して構成されたことを特徴とする。
The reciprocating compressor according to claim 2 of the present invention is the reciprocating compressor according to claim 1 ,
The valve body fixing means connects a fixed portion for fixing a fulcrum portion of each valve body to each fixed portion of the recess, and connects each fixed portion, and connects the fulcrum portion of each valve body to the recess. It is characterized in that a spring part for elastically pressing each fixed part is formed into an integrated shape.

本発明の請求項1記載の往復動型圧縮機は、所要の流体を圧縮する往復圧縮部を密閉容器内に収納した往復動型圧縮機において、
前記往復圧縮部は、前記流体を吐出する吐出部と、この吐出部を開閉するとともに、複数の吐出口が形成された弁装置とを備え、
前記弁装置は、前記吐出口に対応して設けられたリード弁と、このリード弁の各々の背面側に配置したバルブバッカーを設けた弁体と、この弁体を収納する凹所を設けた弁座と、前記弁体の各端側を押圧して前記凹所の各固定部分に弾力的に固定する弁体固定手段とを備え、
前記リード弁の形状を、前記固定部分において両脇に張り出した支点部分と、前記支点部分を結ぶ線に対して直角方向ないし斜方向に張り出す途中部分と、前記途中部分を経た他端側にある前記吐出口を閉塞する蓋部分を一体的にした形体に形成するとともに、
前記バルブバッカーの形状を、前記リード弁と同じ支点部分と、前記支点部分を結ぶ線に対して斜方向に張り出す部分を徐々に狭い幅にした途中部分と、前記リード弁の蓋部分よりも狭い幅の他端部分とを一体にした形体に形成し、
一方のリード弁の支点部分と他方のリード弁の支点部分が、各リード弁の蓋部分が中央に位置し、その外側に位置するように各リード弁を配置し、前記バルブバッカーの各途中部分が前記支点部分を結ぶ線に対してそれぞれ異なる方向に位置するように各バルブバッカーを配置することを特徴とするものであり、
弁体固定手段により弁体を凹所の各固定部分に弾力的に固定でき、さらにバルブバッカーの弾性によりリード弁の抑制と反発復帰とを行わせて、圧力動作の効率を高める効果を得るとともに、複数の吐出口およびこれに対応して各々のリード弁とバルブバッカーを備えた弁構成を用いた弁装置を用いたので、吐出抵抗を低下せしめ、圧縮効率を向上できるという顕著な効果を奏する。
また弁体固定手段により前記凹所の各固定部分に各支点部分を配置して各弁体を容易にかつ確実に固定できるとともに、リード弁が開いたときに、あたかも、S文字を斜めに引き伸ばして頭部をひねったような曲がり方になるように動作させ、こうした立体的に複雑な曲がり方に対抗してリード弁自体とバルブバッカーとに蓄えられる内部応力によって生ずる反発力により、リード弁の復帰速度をさらに速めることができ、圧縮効率をさらに向上できるという顕著な効果を奏する。
また各リード弁が逆方向に曲がって開くので、各リード弁から吐出された冷媒ガスの衝突が少なくなり、吐出抵抗をさらに低下せしめ、圧縮効率をさらに向上できるという顕著な効果を奏する。
The reciprocating compressor according to claim 1 of the present invention is a reciprocating compressor in which a reciprocating compression part for compressing a required fluid is housed in a sealed container.
The reciprocating compression unit includes a discharge unit that discharges the fluid, and a valve device that opens and closes the discharge unit and includes a plurality of discharge ports.
The valve device is provided with a reed valve provided corresponding to the discharge port, a valve body provided with a valve backer disposed on the back side of each of the reed valves, and a recess for storing the valve body. e Bei a valve seat, a valve body fixing means resiliently secured to the fixed portion of the recess by pressing the respective end side of the valve body,
The shape of the reed valve is such that a fulcrum portion projecting on both sides in the fixed portion, a middle portion projecting in a direction perpendicular to or oblique to a line connecting the fulcrum portions, and the other end side through the middle portion. While forming a lid portion that closes a certain discharge port into an integrated shape,
The shape of the valve backer is the same fulcrum part as the reed valve, a middle part gradually narrowing a part protruding obliquely with respect to a line connecting the fulcrum parts, and a lid part of the reed valve Formed into an integrated shape with the other end of the narrow width,
Each reed valve is arranged so that the fulcrum part of one reed valve and the fulcrum part of the other reed valve are located at the center and the lid part of each reed valve, and each middle part of the valve backer. Are arranged such that each valve backer is positioned in different directions with respect to the line connecting the fulcrum parts ,
The valve body can be elastically fixed to each fixed part of the recess by the valve body fixing means, and the reed valve is suppressed and rebounded by the elasticity of the valve backer, and the effect of increasing the efficiency of the pressure operation is obtained. Since a valve device using a valve structure including a plurality of discharge ports and corresponding reed valves and valve backers is used, the discharge resistance is lowered and the compression efficiency can be improved. .
In addition, each valve body can be fixed easily and reliably by disposing each fulcrum portion in each fixed portion of the recess by the valve body fixing means, and when the reed valve is opened, it is as if the S letter is stretched diagonally. The reed force of the reed valve is caused by the repulsive force generated by the internal stress accumulated in the reed valve itself and the valve backer against such a three-dimensional complicated way of bending. There is a remarkable effect that the return speed can be further increased and the compression efficiency can be further improved.
In addition, since each reed valve is bent in the opposite direction, collision of refrigerant gas discharged from each reed valve is reduced, and the discharge resistance is further reduced, and the compression efficiency can be further improved.

本発明の請求項2記載の往復動型圧縮機は、請求項1記載の往復動型圧縮機において、
前記弁体固定手段が、前記各弁体の支点部分を前記凹所の各固定部分に固定するための固定部と、各固定部を連結しかつ前記各弁体の支点部分を前記凹所の各固定部分に弾力的に押圧するためのバネ部を一体的にした形体に形成して構成されたことを特徴とするものであり、
1つの弁体固定手段により前記凹所に各弁体を容易にかつ確実に固定できるというさらなる顕著な効果を奏する。
The reciprocating compressor according to claim 2 of the present invention is the reciprocating compressor according to claim 1 ,
The valve body fixing means connects a fixed portion for fixing a fulcrum portion of each valve body to each fixed portion of the recess, and connects each fixed portion, and connects the fulcrum portion of each valve body to the recess. It is characterized in that it is formed by forming a spring part for elastically pressing each fixed part into an integrated shape,
There is a further remarkable effect that each valve body can be easily and reliably fixed to the recess by one valve body fixing means.

以下、図面により本発明の実施の形態を詳細に説明する。
図1は、本発明の往復動型圧縮機の実施例と従来技術とに共通する全体構成を示すブロック図である。
図2は、本発明の実施例の全体構成を分解した状態で示す断面図である。
図3は、各部を組み立てた全体構成を示す部分断面による斜視図である。
図4は、図2の要部を詳細に示す拡大図である。
図5は、本発明の実施例の弁装置部分に関連する各部分の組立状態を示す説明図である。
図6(A)は、本発明の実施例の弁装置部分に関連する各部分を組み立てた状態を示す平面説明図であり、(B)は(A)に示したリード弁とバルブバッカーの要部を詳細に示す平面説明図であり、(C)は各リード弁の背面側に各バルブバッカーを配置した状態を示す平面説明図である。
図7は、図6(A)のA−A断面説明図である。
図8は、リード弁の背面側にバルブバッカーを配置した状態を示す説明図である。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing an overall configuration common to an embodiment of a reciprocating compressor of the present invention and a conventional technique.
FIG. 2 is a cross-sectional view showing the entire configuration of the embodiment of the present invention in an exploded state.
FIG. 3 is a perspective view with a partial cross section showing the overall structure of the assembled parts.
FIG. 4 is an enlarged view showing the main part of FIG. 2 in detail.
FIG. 5 is an explanatory view showing an assembled state of each part related to the valve device part of the embodiment of the present invention.
FIG. 6 (A) is a plan explanatory view showing a state in which respective parts related to the valve device part of the embodiment of the present invention are assembled, and FIG. 6 (B) is a schematic view of the reed valve and valve backer shown in FIG. It is a plane explanatory view showing a portion in detail, and (C) is a plane explanatory view showing a state in which each valve backer is arranged on the back side of each reed valve.
FIG. 7 is an AA cross-sectional explanatory view of FIG.
FIG. 8 is an explanatory view showing a state in which a valve backer is arranged on the back side of the reed valve.

各符号による機能部分は、細線や鎖線で示した組み合わせによって組み立てられ、所要の止めねじ類・止めばね類によって組み付け固定または係合するようになっている。なお、これらの図において同一符号の部分は同一機能をもつ部分であり、また図1の符号と同一符号の部分は、図1で説明した同一符号の部分と同一機能をもつ部分である。
図1〜図3において、固定子210・回転子220・回転軸230・軸受240などは一体に組み付けて電動機部200を構成し、給電部100に接続する。また、つる巻ばねなどで緩衝支持部800が構成されている。
電動機部200の回転軸230には下端部部分に半月状釣合板231が一体的に形成してあり、半月状釣合板231の反対側に偏心ピン310を設けることにより、偏心ピン310に円形軌道を描く運動を行わせるための運動機構を構成している。
The functional parts indicated by the respective symbols are assembled by combinations indicated by thin lines and chain lines, and are assembled and fixed or engaged by required set screws and set springs. In these figures, parts having the same reference numerals are parts having the same functions, and parts having the same reference numerals as those in FIG. 1 are parts having the same functions as the parts having the same reference numerals described in FIG.
In FIG. 1 to FIG. 3, the stator 210, the rotor 220, the rotating shaft 230, the bearing 240, and the like are assembled together to form the electric motor unit 200 and connected to the power feeding unit 100. Further, the buffer support portion 800 is constituted by a helical spring or the like.
The rotating shaft 230 of the electric motor unit 200 is integrally formed with a half-moon-shaped balancing plate 231 at the lower end portion. By providing an eccentric pin 310 on the opposite side of the half-moon-shaped balancing plate 231, a circular track is formed on the eccentric pin 310. It constitutes a motion mechanism for performing the motion of drawing.

T字型クランク筒330内に偏心ピン310によって駆動されて直線状に往復運動させるための運動機構を構成しており、ピストン340がシリンダ350のシリンダ穴内で往復運動する圧縮作用を行うもので、偏心ピン310からシリンダ350の部分によって往復圧縮部300を構成している。   A movement mechanism for reciprocating linearly driven by an eccentric pin 310 in the T-shaped crank cylinder 330 is configured, and the piston 340 performs a compression action that reciprocates within the cylinder hole of the cylinder 350. The reciprocating compression unit 300 is configured by the portion of the cylinder 350 from the eccentric pin 310.

シリンダ350に接して取り付ける弁装置部500は、ガスケット551・吸入側弁体510・弁座520・2つのリード弁530・2つのバルブバッカー540・弁体固定手段570・ガスケット550の部分を主体にして構成してあり、これら部分を往復圧縮部300を構成するシリンダ350の端面352と吐出部700を構成するヘッドマフラー部材710の端面713との間に挟んだ後、ねじ止め固定して組み立てるものであり、シリンダ350の端面352と吐出部700のヘッドマフラー部材710とに挟み止め固定する構造になっている。   The valve device 500 attached in contact with the cylinder 350 is mainly composed of the gasket 551, the suction side valve body 510, the valve seat 520, the two reed valves 530, the two valve backers 540, the valve body fixing means 570, and the gasket 550. These parts are sandwiched between the end surface 352 of the cylinder 350 constituting the reciprocating compression unit 300 and the end surface 713 of the head muffler member 710 constituting the discharge unit 700, and then assembled by fixing with screws. The structure is such that the end surface 352 of the cylinder 350 and the head muffler member 710 of the discharge unit 700 are clamped and fixed.

600は吸入部であり、吸入路601から吸入された冷媒流体は、利用対象の管路で受けた混入物などを濾過するフィルタを設けた図示しないマフラ部分と共鳴室部分を通って弁装置部500へ導入される。
ここで本実施例で用いる冷媒はHFC系冷媒、例えばR134aを用いる。
Reference numeral 600 denotes a suction portion, and the refrigerant fluid sucked from the suction passage 601 passes through a muffler portion (not shown) and a resonance chamber portion provided with a filter for filtering contaminants and the like received in the pipe to be used, and a valve device portion. 500.
Here, the refrigerant used in this embodiment is an HFC refrigerant, for example, R134a.

一方、圧縮された冷媒流体は、弁装置部500を経て異なる周波数の流体振動に共鳴して消音する共鳴室をもつ複数のマフラ部分720を通り図示しない吐出管から吐出路701へ通じる経路を設けて吐出部700を構成している。   On the other hand, the compressed refrigerant fluid passes through a plurality of muffler portions 720 having resonance chambers that resonate with fluid vibrations of different frequencies via the valve device unit 500, and provide a path from a discharge pipe (not shown) to a discharge path 701. The discharge unit 700 is configured.

以上の各部を組み上げた後、密閉容器900の上側容器920を下側容器910に嵌め込んで密閉すると図3に示すように一体化した密閉型の往復動型圧縮機1000になる。この状態で下側容器910に潤滑油401をチャージ配管402を経て入れ、電動機の回転軸230の高速回転によって潤滑油401を吸い上げ、各部に潤滑油401を循環させるように給油部400を構成している。
360は密閉容器900内に圧縮された冷媒の一部を吐出して高圧にするためのケース内部吐出配管である。
After assembling the above parts, when the upper container 920 of the hermetic container 900 is fitted into the lower container 910 and sealed, an integrated hermetic reciprocating compressor 1000 is obtained as shown in FIG. In this state, the lubricating oil 401 is put into the lower container 910 through the charge pipe 402, the lubricating oil 401 is sucked up by the high-speed rotation of the rotating shaft 230 of the electric motor, and the lubricating oil part 400 is configured to circulate the lubricating oil 401 to each part. ing.
Reference numeral 360 denotes a case internal discharge pipe for discharging a part of the refrigerant compressed in the sealed container 900 to a high pressure.

次に、弁装置500の詳細部分を図4〜図8によって説明する。
図4に示すようにシリンダ350に接して取り付ける弁装置部500は、ガスケット551・吸入側弁体510・弁座520・2つのリード弁530A、530B・2つのバルブバッカー540A、540B・弁体固定手段570・ガスケット550の部分を主体にして構成してある。
そして、これら部分を往復圧縮部300を構成するシリンダ350の端面352と吐出部700を構成するヘッドマフラー部材710の端面713との間に挟んだ後、ねじ止め固定して組み立てる構造になっており、図4の右から左方向に向かう矢印に沿った吸入経路と、図4の左から右方向に向かう矢印に沿った吐出経路とを形成して構成したものである。
Next, a detailed portion of the valve device 500 will be described with reference to FIGS.
As shown in FIG. 4, the valve device unit 500 attached in contact with the cylinder 350 includes a gasket 551, a suction side valve body 510, a valve seat 520, two reed valves 530 </ b> A, 530 </ b> B, two valve backers 540 </ b> A, 540 </ b> B, and a valve body fixed. The means 570 and the gasket 550 are mainly configured.
These parts are sandwiched between the end surface 352 of the cylinder 350 that constitutes the reciprocating compression unit 300 and the end surface 713 of the head muffler member 710 that constitutes the discharge unit 700, and then fixed by screws and assembled. 4 is formed by forming a suction path along the arrow from the right to the left in FIG. 4 and a discharge path along the arrow from the left to the right in FIG.

具体的に説明すると、ピストン340がシリンダ350内を高速で往復運動することにより冷媒を吐出する2つの吐出口522A、522Bを備え、この吐出口522A、522Bを開閉するリード弁530A、530Bの開きを抑制して反発するためのバルブバッカー540A、540Bをリード弁530A、530Bの背面側にそれぞれ配置して各弁体560を形成するとともに、この各弁体560を弁座520の凹所523の所定の箇所(523A、523B)に収納した後、弁体固定手段570により各弁体260の各端側を押圧して凹所523の所定の各固定部分(523A、523B)に弾力的に固定するようにしてある(図5〜7参照)。   More specifically, the piston 340 includes two discharge ports 522A and 522B that discharge refrigerant by reciprocating at high speed in the cylinder 350, and the reed valves 530A and 530B that open and close the discharge ports 522A and 522B are opened. The valve backers 540A and 540B for suppressing and repelling are arranged on the back side of the reed valves 530A and 530B to form the valve bodies 560, and the valve bodies 560 are formed in the recesses 523 of the valve seat 520. After being housed in predetermined locations (523A, 523B), each end of each valve body 260 is pressed by the valve body fixing means 570 to be elastically fixed to each predetermined fixing portion (523A, 523B) of the recess 523. (See FIGS. 5 to 7).

ガスケット551は、シリンダ350と吸入側弁体510との間に介在するようにしたものであって、樹脂系材の板、例えば、繊維入りブチルゴム板を図のような形体に形成したものであり、外周にシリンダ350と吸入側弁体510との間の周辺辺部分を閉塞するための周縁部分と、吸入・吐出用通路551Aを設けてある。   The gasket 551 is interposed between the cylinder 350 and the suction side valve body 510, and is formed by forming a resin material plate, for example, a fiber-containing butyl rubber plate into a shape as shown in the figure. A peripheral portion for closing the peripheral side portion between the cylinder 350 and the suction side valve body 510 and a suction / discharge passage 551A are provided on the outer periphery.

吸入側弁体510は、平面状の板ばね、例えば、両面を研磨仕上げしたステンレス鋼板ばねの中央付近にスリットを設けて形成したリード弁511と、リード弁511の根元外側に、弁座520の吐出口522A、522Bよりも少し大きい吐出用穴512A、512Bを設けたものである。   The suction side valve element 510 is composed of a flat leaf spring, for example, a reed valve 511 formed by providing a slit near the center of a stainless steel plate spring polished on both sides, and a valve seat 520 on the outer side of the root of the reed valve 511. Discharge holes 512A and 512B that are slightly larger than the discharge ports 522A and 522B are provided.

リード弁530A、530Bは、平面状の板バネ、例えば、両面を研磨仕上げしたステンレス鋼の薄い板ばねを図に示すように形成したものであり、図6(B)に示すようにリード弁固定部分535に当たる一端側に両側に張り出した2つの支点部分531、532を配置し、この2つの支点を結ぶ中心線xに対して直角な中心線yに沿って張り出す途中部分533を経た他端側に、吐出口522A、522Bを閉塞する大きさの直径をもつ蓋部分534を配置した形状のものである。   The reed valves 530A and 530B are formed by flat plate springs, for example, thin plate springs of stainless steel whose both surfaces are polished and finished as shown in the drawing. As shown in FIG. 6B, the reed valves are fixed. Two fulcrum portions 531 and 532 projecting on both sides are arranged on one end side corresponding to the portion 535, and the other end passes through a midway portion 533 projecting along a center line y perpendicular to the center line x connecting the two fulcrums. On the side, a lid portion 534 having a diameter large enough to close the discharge ports 522A and 522B is disposed.

図5〜7に示すように、凹所523の所定の各固定部分(523A、523B)に、一方のリード弁530Aの支点部分531、532と、他方のリード弁530Bの支点部分531、532が、各リード弁530A、530Bの蓋部分534が中央に位置し、その外側に位置するように各リード弁530A、530Bが配置されているとともに、バルブバッカー540A、540Bの各途中部分543が支点部分541、542を結ぶ線に対してそれぞれ異なる方向に位置するように各バルブバッカー540A、540Bが配置されている。
バルブバッカー540Aについて説明すると、図6(A)〜(C)に示すように、支点部分541、542を結ぶ中心線xに直角な中心線yに対して角度θで斜方向の中心線zに沿って張り出す途中部分543を経た他端側に、他端部分544を配置した形状のものである。図6(C)に、各リード弁530A、530Bの背面側に各バルブバッカー540A、540Bを配置した状態を示す。
各バルブバッカー540A、540Bをこのように配置することにより、各リード弁530A、530Bが吐出圧力によって図における紙面の状態において下側から持ち上がって逆方向に曲がって開くので、各リード弁530A、530Bから吐出された冷媒ガスの衝突が少なくなり吐出抵抗をさらに低下せしめ、圧縮効率をさらに向上できる。
As shown in FIGS. 5 to 7, fulcrum portions 531 and 532 of one reed valve 530 </ b> A and fulcrum portions 531 and 532 of the other reed valve 530 </ b> B are provided in predetermined fixed portions (523 </ b> A and 523 </ b> B) of the recess 523. The reed valves 530A and 530B are arranged so that the lid portions 534 of the reed valves 530A and 530B are located at the center and located outside thereof, and the intermediate portions 543 of the valve backers 540A and 540B are fulcrum portions. The valve backers 540A and 540B are arranged so as to be located in different directions with respect to the line connecting 541 and 542, respectively.
The valve backer 540A will be described. As shown in FIGS. 6A to 6C, the valve backer 540A is set to the oblique center line z at an angle θ with respect to the center line y perpendicular to the center line x connecting the fulcrum portions 541 and 542. The other end portion 544 is arranged on the other end side through the intermediate portion 543 extending along the end. FIG. 6C shows a state in which the valve backers 540A and 540B are arranged on the back side of the reed valves 530A and 530B.
By arranging the valve backers 540A and 540B in this manner, the reed valves 530A and 530B are lifted from the lower side in the state of the paper surface by the discharge pressure and bent in the opposite direction, so that the reed valves 530A and 530B are opened. The collision of the refrigerant gas discharged from the nozzle is reduced, the discharge resistance is further reduced, and the compression efficiency can be further improved.

バルブバッカー540A、540Bは、平面状の板ばね、例えば、両面を研磨仕上げしたステンレス鋼の薄い板ばねを図に示すように形成したものであり、リード弁530A、530Bと同様に、バルブバッカー固定部分549に当たる一端側に張り出した2つの支点部分541、542を配置し、この2つの支点を結ぶ方向に対して前記のように所定の角度θで傾斜する斜方向に張り出す途中部分543を、支点部分541、542付根部分における幅から徐々に狭い幅にして他端側にリード弁530A、530Bの蓋部分534の1/2程度の幅をもつ先端部分544を配置するように形成するとともに、図7、図8に示すように、支点部分541・542を含むバルブバッカー固定部分549と先端部分544とを平行面にし、途中部分543を、バルブバッカー固定部分549に近い側543−1では小さい曲率で先端部分544に近い側543−2では大きい曲率をもつ2次曲線で曲がる曲り面を設けた形体に形成したものである。   The valve backers 540A and 540B are formed by flat plate springs, for example, thin plate springs of stainless steel whose both surfaces are polished as shown in the figure, and are fixed to the valve backers similarly to the reed valves 530A and 530B. Two fulcrum portions 541 and 542 projecting on one end side corresponding to the portion 549 are arranged, and an intermediate portion 543 projecting in an oblique direction inclined at a predetermined angle θ as described above with respect to the direction connecting the two fulcrums, The fulcrum portions 541 and 542 are formed so as to be gradually narrower than the width at the root portion, and to be arranged so that a tip end portion 544 having a width about ½ of the lid portion 534 of the reed valves 530A and 530B is disposed on the other end side. As shown in FIGS. 7 and 8, the valve backer fixing portion 549 including the fulcrum portions 541 and 542 and the tip portion 544 are parallel to each other, and the middle portion 543, and is formed to form having a curved surface that bends in a quadratic curve with a large curvature at a side closer 543-2 in the tip portion 544 with a small curvature at a side closer 543-1 to the valve backer fixed portion 549.

このバルブバッカー540A、540Bの形状は、リード弁530A、530Bが吐出圧力によって、前記図における紙面の状態において下側から持ち上がってきたときに、リード弁530A、530Bをそれぞれバルブバッカー540A、540Bの形状に添いながらバルブバッカー540A、540Bの弾性変形に伴って変形するように作用させるとともに、先端部分544の幅を狭くすることにより、上記のリード弁530A、530Bが捩れ易くなるように作用する。   The valve backers 540A and 540B are shaped like the valve backers 540A and 540B when the reed valves 530A and 530B are lifted from the lower side in the state of the paper in the figure by discharge pressure. In addition, the reed valves 530A and 530B act to be easily twisted by reducing the width of the tip portion 544 and causing the valve backers 540A and 540B to deform in accordance with the elastic deformation.

弁体固定手段570は、厚めの金属板、例えば、ステンレス鋼の板ばねを図に示すように形成したものであり、各弁体560の支点部分531、532、541、542を凹所523の各固定部分523A、523Bに固定するための固定部570A、570Bと、各固定部570A、570Bを連結しかつ各弁体560の支点部分531、532、541、542を凹所523の各固定部分560A、560Bに弾力的に押圧するためのバネ部560Cを一体的にした形体に形成されている。
弁体固定手段570の固定部570A、570Bを、凹所523の各固定部分523A、523Bに各弁体560の支点部分531、532、541、542を配置した上から装着することにより、1つの弁体固定手段570により各弁体560を容易にかつ確実に固定できる。
この状態で弁装置500を前記のようにシリンダ350の端面352と吐出部700のヘッドマフラー部材710とに挟み止め固定すれば振動などにより各弁体560が脱着することがない。
The valve body fixing means 570 is formed of a thick metal plate, for example, a stainless steel leaf spring, as shown in the figure, and the fulcrum portions 531, 532, 541, 542 of the valve bodies 560 are formed in the recesses 523. The fixing portions 570A and 570B for fixing to the fixing portions 523A and 523B, the fixing portions 570A and 570B are connected, and the fulcrum portions 531, 532, 541 and 542 of the valve bodies 560 are connected to the fixing portions of the recess 523. 560A and 560B are formed into an integral shape with a spring portion 560C for elastically pressing.
By attaching the fixing portions 570A and 570B of the valve body fixing means 570 to the fixing portions 523A and 523B of the recess 523 after the fulcrum portions 531, 532, 541 and 542 of the valve bodies 560 are disposed, Each valve body 560 can be easily and reliably fixed by the valve body fixing means 570.
In this state, if the valve device 500 is clamped and fixed between the end surface 352 of the cylinder 350 and the head muffler member 710 of the discharge unit 700 as described above, the valve bodies 560 are not detached due to vibration or the like.

弁座520は、厚めの金属板、例えば、ステンレス鋼板を図に示すように形成したもので、リード弁530A、530Bの支点部分531、532の外形と一致した形状で、リード弁530A、530Bとバルブバッカー540A、540Bの各支点部分531、532、541、542と、弁体固定手段570の固定部570A、570Bが重なって入り込む第1の凹部である各固定部分523A、523Bと、リード弁530A、530Bとバルブバッカー540A、540Bの支点部分以外の部分が入り込む第2の凹部とを連続した凹所523を設けるとともに、第2の凹部におけるリード弁530A、530Bの各蓋部分534に対応する位置に吐出口522A、522Bを配置した形体に形成したものである。   The valve seat 520 is formed of a thick metal plate, for example, a stainless steel plate as shown in the figure, and has a shape that matches the outer shape of the fulcrum portions 531 and 532 of the reed valves 530A and 530B. Each fulcrum portion 531, 532, 541, 542 of the valve backers 540A, 540B and each fixing portion 523A, 523B which is a first recess into which the fixing portions 570A, 570B of the valve body fixing means 570 are overlapped, and the reed valve 530A 530B and a second recessed portion into which a portion other than the fulcrum portion of the valve backers 540A and 540B enters, and a position corresponding to each lid portion 534 of the reed valves 530A and 530B in the second recessed portion. Are formed in a shape in which discharge ports 522A and 522B are arranged.

また、弁座520は、凹所523を鍛造スタンピングで形成するとともに両面を研磨仕上げし、また吐出口522A、522Bには、周辺にリブ面522Cを作り、リブ状面522Cの部分を研磨仕上げしてリード弁530A、530Bの接触面を形成するとともに、凹所523の無い平面部分における吸入側弁体510のリード弁511に対応する位置に吸入口521を配置してある。   In addition, the valve seat 520 has a recess 523 formed by forging stamping and polished on both sides, and the discharge ports 522A and 522B have rib surfaces 522C around them, and the rib-like surfaces 522C are polished. In addition, the contact surfaces of the reed valves 530A and 530B are formed, and the suction port 521 is disposed at a position corresponding to the reed valve 511 of the suction side valve body 510 in a flat portion without the recess 523.

ガスケット550は、弁座520と吐出部700のヘッドマフラー部材710との間に介在するようにしたものであって、樹脂系材の板、例えば、繊維入りブチルゴム板を図のような形状に形成したものであり、外周に弁座520とヘッドマフラー部材710との間の周辺辺部分を閉塞するための周縁部分と、吸入側小室558と吐出側小室559との間を仕切るための仕切部分554とを設けてある。   The gasket 550 is interposed between the valve seat 520 and the head muffler member 710 of the discharge unit 700, and is formed of a resin material plate, for example, a fiber-containing butyl rubber plate in the shape shown in the figure. The peripheral portion for closing the peripheral portion between the valve seat 520 and the head muffler member 710 on the outer periphery, and the partition portion 554 for partitioning between the suction side small chamber 558 and the discharge side small chamber 559. And are provided.

吐出部700のヘッドマフラー部材710は、厚めの金属板、例えば、ステンレス鋼板を図に示すように形成したものであり、吐出路701に通ずる図示しない通路穴を設けてある。   The head muffler member 710 of the discharge unit 700 is formed of a thick metal plate, for example, a stainless steel plate, as shown in the drawing, and is provided with a passage hole (not shown) that communicates with the discharge passage 701.

以上の構成要素、つまりガスケツト551・吸入側弁体510・弁座520・リード弁530A、530B・バルブバッカー540A、540B・弁体固定手段570・ガスケツト550・ヘッドマフラー部材710などは、全て消磁処理することによって、動作時における相互の粘り着きを起こさないようにしてある。   The above components, that is, the gasket 551, the suction side valve body 510, the valve seat 520, the reed valve 530A, 530B, the valve backers 540A, 540B, the valve body fixing means 570, the gasket 50, the head muffler member 710, etc. are all degaussed. This prevents mutual stickiness during operation.

弁座520・リード弁530A、530B・バルブバッカー540A、540Bの組立状態を平面的にみると図6(A)に示すように重なり合っている。   When the assembly state of the valve seat 520, the reed valves 530A, 530B, and the valve backers 540A, 540B is viewed in plan, they overlap as shown in FIG.

図6(A)におけるA−A方向の断面、つまり、リード弁530A、530Bの中心を縦断する断面の要部は図7に示すようになっている。図6(A)のA−A断面におけるリード弁530A、530Bとバルブバッカー540A、540Bとは、無圧力状態での形状であり、リード弁530A、530Bとバルブバッカー540A、540Bとで構成した各弁体560は、各支点部分531・532・541・542を含む一端側のリード弁固定部分535・バルブバッカー固定部分549の部分を弁体固定手段570で抑圧されている。   FIG. 7 shows a main part of a cross section in the AA direction in FIG. 6A, that is, a cross section vertically cutting the centers of the reed valves 530A and 530B. The reed valves 530A and 530B and the valve backers 540A and 540B in the A-A cross section of FIG. 6A are in a non-pressure state, and are configured by the reed valves 530A and 530B and the valve backers 540A and 540B. In the valve body 560, the reed valve fixing portion 535 and the valve backer fixing portion 549 on one end side including the respective fulcrum portions 531, 532, 541, and 542 are suppressed by the valve body fixing means 570.

このため、吐出口522A、522Bから圧縮された流体が吐出されて吐出圧力がかかると、各バルブバッカー540A、540Bが図のように配置されているので、各リード弁530A、530Bが吐出圧力によって図における紙面の状態において下側から持ち上がって逆方向に複雑な曲がり方をすることになる。
この曲がり方はあたかもコブラ蛇が釜首を持ち上げた状態で、さらに、首をひねった形に似たような曲がり方、つまり、S文字を細めに引き伸ばして頭部をひねったような曲がり方の立体的に複雑な曲がり方をするので、この曲がりに対抗した内部応力がリード弁530A、530Bとバルブバッカー540A、540Bとに蓄えられた状態になる。
For this reason, when the compressed fluid is discharged from the discharge ports 522A and 522B and the discharge pressure is applied, the valve backers 540A and 540B are arranged as shown in FIG. In the state of the paper surface in the figure, it is lifted from the lower side, and it is complicatedly bent in the opposite direction.
This way of bending is as if the cobra snake lifted the hook neck, and it bends like a shape with a twisted neck, that is, a way of bending with the S letter stretched narrowly and the head twisted. Since the bending is three-dimensionally complicated, the internal stress against the bending is stored in the reed valves 530A and 530B and the valve backers 540A and 540B.

この状態で、吐出圧力から逆圧力に変わると、リード弁530A、530Bの曲がりを矯正して吐出口522A、522Bを閉塞するように復帰する力は、上記の立体的に複雑な曲がりに対する内部応力によって強い反発力になって現れ、上記のS文字の曲がりを直線に延ばすような力として働くため、リード弁530A、530Bの先端部分、つまり、蓋部分534を吐出口522A、522Bに叩き付けるように、急激な動作を行うため、リード弁530A、530Bが逆圧力よりも速く吐出口522A、522Bを閉じるようになり、逆圧力時における流体の吐出口522A、522Bへの戻り量を極度に低減し得るように動作することになるものである。   In this state, when the discharge pressure is changed to the reverse pressure, the force that corrects the bending of the reed valves 530A and 530B and returns to close the discharge ports 522A and 522B is the internal stress for the above three-dimensional complicated bending. Therefore, the tip of the reed valves 530A and 530B, that is, the lid portion 534 is struck against the discharge ports 522A and 522B. Because of the rapid operation, the reed valves 530A and 530B close the discharge ports 522A and 522B faster than the reverse pressure, and the return amount of the fluid to the discharge ports 522A and 522B at the time of reverse pressure is extremely reduced. Will behave to get.

したがって、こうした密閉型の往復動型圧縮機1000では、弁体固定手段570により各弁体260を凹所523の各固定部分523A、523Bに容易にかつ確実に固定でき、また、バルブバッカー540A、540Bの弾性によりリード弁530A、530Bの抑制と反発復帰とを行わせて、圧力動作の効率を高める効果が得られるとともに、2つの吐出口522A、522Bおよび2つのリード弁530A、530Bと2つのバルブバッカー540A、540Bを備えた弁構成を用いた弁装置500を用いたので、吐出抵抗をさらに低下せしめて圧縮効率が向上するので、冷蔵庫の圧縮機として用いた場合には冷蔵庫における成績係数が向上することになる。   Therefore, in such a hermetic reciprocating compressor 1000, each valve body 260 can be easily and reliably fixed to each fixing portion 523A, 523B of the recess 523 by the valve body fixing means 570, and the valve backers 540A, With the elasticity of 540B, the reed valves 530A and 530B are suppressed and rebounded, and the effect of increasing the efficiency of the pressure operation is obtained. In addition, the two discharge ports 522A and 522B, the two reed valves 530A and 530B, Since the valve device 500 using the valve configuration including the valve backers 540A and 540B is used, the discharge efficiency is further reduced and the compression efficiency is improved. Therefore, when used as a refrigerator compressor, the coefficient of performance in the refrigerator is Will improve.

上記実施の形態の説明は、本発明を説明するためのものであって、特許請求の範囲に記載の発明を限定し、或は範囲を減縮するものではない。又、本発明の各部構成は上記実施の形態に限らず、特許請求の範囲に記載の技術的範囲内で種々の変形が可能である。   The description of the above embodiment is for explaining the present invention, and does not limit the invention described in the claims or reduce the scope thereof. Moreover, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim.

本発明の往復動型圧縮機は、1つの弁体固定手段により弁体を弁座の凹所の各固定部分に容易にかつ確実に固定でき、また、バルブバッカーの弾性によりリード弁の抑制と反発復帰とを行わせて、圧力動作の効率を高める効果が得られるとともに、複数の吐出口および複数のリード弁と複数のバルブバッカーを備えた弁構成を用いた弁装置を用いたので、吐出抵抗をさらに低下せしめて圧縮効率が向上し、冷蔵庫の圧縮機として用いた場合には冷蔵庫における成績係数が向上するという顕著な効果を奏し、
また弁体固定手段により前記凹所の各固定部分に各支点部分を配置して各弁体を容易にかつ確実に固定できるとともに、リード弁が開いたときに、あたかも、S文字を斜めに引き伸ばして頭部をひねったような曲がり方になるように動作させ、こうした立体的に複雑な曲がり方に対抗してリード弁自体とバルブバッカーとに蓄えられる内部応力によって生ずる反発力により、リード弁の復帰速度をさらに速めることができ、圧縮効率をさらに向上できるという顕著な効果を奏し、
また各リード弁が逆方向に曲がって開くので、各リード弁から吐出された冷媒ガスの衝突が少なくなり、吐出抵抗をさらに低下せしめ、圧縮効率をさらに向上できるという顕著な効果を奏するため、産業上の利用価値が高い。
In the reciprocating compressor of the present invention, the valve body can be easily and reliably fixed to each fixed portion of the recess of the valve seat by one valve body fixing means, and the reed valve is suppressed by the elasticity of the valve backer. Since the effect of increasing the efficiency of pressure operation by performing rebound return is obtained, the valve device using a valve configuration including a plurality of discharge ports, a plurality of reed valves, and a plurality of valve backers is used. resistance further allowed reduction improves compression efficiency, and response rates a remarkable effect that the coefficient of performance in the refrigerator is improved when used as refrigerator compressors,
In addition, each valve body can be fixed easily and reliably by disposing each fulcrum portion in each fixed portion of the recess by the valve body fixing means, and when the reed valve is opened, it is as if the S letter is stretched diagonally. The reed force of the reed valve is caused by the repulsive force generated by the internal stress accumulated in the reed valve itself and the valve backer against such a three-dimensional complicated way of bending. The return speed can be further increased and the compression efficiency can be further improved.
In addition, since each reed valve bends in the reverse direction, the collision of the refrigerant gas discharged from each reed valve is reduced, and the discharge resistance is further reduced, and the compression efficiency can be further improved. The above utility value is high.

本発明の往復動型圧縮機の実施例と従来技術とに共通する全体構成を示すブロック図である。It is a block diagram which shows the whole structure common to the Example of the reciprocating compressor of this invention, and a prior art. 本発明の実施例の全体構成を分解した状態で示す断面図である。It is sectional drawing shown in the state which decomposed | disassembled the whole structure of the Example of this invention. 各部を組み立てた本発明の実施例の全体構成を示す部分断面による斜視図である。It is a perspective view by the partial cross section which shows the whole structure of the Example of this invention which assembled each part. 図2の要部を詳細に示す拡大図である。It is an enlarged view which shows the principal part of FIG. 2 in detail. 本発明の実施例の弁装置部分に関連する各部分の組立状態を示す説明図である。It is explanatory drawing which shows the assembly state of each part relevant to the valve apparatus part of the Example of this invention. (A)は、本発明の実施例の弁装置部分に関連する各部分を組み立てた状態を示す平面説明図であり、(B)は(A)に示したリード弁とバルブバッカーの要部を詳細に示す平面説明図であり、(C)は各リード弁の背面側に各バルブバッカーを配置した状態を示す平面説明図である。(A) is plane explanatory drawing which shows the state which assembled each part relevant to the valve apparatus part of the Example of this invention, (B) is a main part of the reed valve and valve backer shown to (A). It is plane explanatory drawing shown in detail, (C) is a plane explanatory drawing which shows the state which has arrange | positioned each valve backer in the back side of each reed valve. 図6(A)のA−A断面説明図である。It is AA cross-section explanatory drawing of FIG. 6 (A). リード弁の背面側にバルブバッカーを配置した状態を示す説明図である。It is explanatory drawing which shows the state which has arrange | positioned the valve backer in the back side of a reed valve.

符号の説明Explanation of symbols

θ 角度
x、y、z 中心線
1000 往復動型圧縮機
200 電動機部
300 往復圧縮部
400 給油部
500 弁装置
520 弁座
522A、522B 吐出口
523 凹所
530A、530B リード弁
531、532、541、542 支点部分
533、543 中途部分
534 蓋部分
544 他端部分
540A、540B バルブバッカー
560 弁体
570 弁体固定手段
570A、570B 固定部
570C バネ部
600 吸入部
700 吐出部
800 緩衝支持部
900 密閉容器
θ angle x, y, z Center line 1000 Reciprocating compressor 200 Electric motor unit 300 Reciprocating compression unit 400 Oil supply unit 500 Valve device 520 Valve seat 522A, 522B Discharge port 523 Recess 530A, 530B Reed valve 531 532 541 542 Supporting point portions 533, 543 Intermediate portion 534 Lid portion 544 Other end portion 540A, 540B Valve backer 560 Valve body fixing means 570A, 570B Fixing portion 570C Spring portion 600 Suction portion 700 Discharge portion 800 Buffer support portion 900 Sealed container

Claims (2)

所要の流体を圧縮する往復圧縮部を密閉容器内に収納した往復動型圧縮機において、
前記往復圧縮部は、前記流体を吐出する吐出部と、この吐出部を開閉するとともに、複数の吐出口が形成された弁装置とを備え、
前記弁装置は、前記吐出口に対応して設けられたリード弁と、このリード弁の各々の背面側に配置したバルブバッカーを設けた弁体と、この弁体を収納する凹所を設けた弁座と、前記弁体の各端側を押圧して前記凹所の各固定部分に弾力的に固定する弁体固定手段とを備え、
前記リード弁の形状を、前記固定部分において両脇に張り出した支点部分と、前記支点部分を結ぶ線に対して直角方向ないし斜方向に張り出す途中部分と、前記途中部分を経た他端側にある前記吐出口を閉塞する蓋部分を一体的にした形体に形成するとともに、
前記バルブバッカーの形状を、前記リード弁と同じ支点部分と、前記支点部分を結ぶ線に対して斜方向に張り出す部分を徐々に狭い幅にした途中部分と、前記リード弁の蓋部分よりも狭い幅の他端部分とを一体にした形体に形成し、
一方のリード弁の支点部分と他方のリード弁の支点部分が、各リード弁の蓋部分が中央に位置し、その外側に位置するように各リード弁を配置し、前記バルブバッカーの各途中部分が前記支点部分を結ぶ線に対してそれぞれ異なる方向に位置するように各バルブバッカーを配置することを特徴とする往復動型圧縮機。
In a reciprocating compressor in which a reciprocating compression part for compressing a required fluid is housed in a sealed container,
The reciprocating compression unit includes a discharge unit that discharges the fluid, and a valve device that opens and closes the discharge unit and includes a plurality of discharge ports.
The valve device is provided with a reed valve provided corresponding to the discharge port, a valve body provided with a valve backer disposed on the back side of each of the reed valves, and a recess for storing the valve body. e Bei a valve seat, a valve body fixing means resiliently secured to the fixed portion of the recess by pressing the respective end side of the valve body,
The shape of the reed valve is such that a fulcrum portion projecting on both sides in the fixed portion, a middle portion projecting in a direction perpendicular to or oblique to a line connecting the fulcrum portions, and the other end side through the middle portion. While forming a lid portion that closes a certain discharge port into an integrated shape,
The shape of the valve backer is the same fulcrum part as the reed valve, a middle part gradually narrowing a part protruding obliquely with respect to a line connecting the fulcrum parts, and a lid part of the reed valve Formed into an integrated shape with the other end of the narrow width,
Each reed valve is arranged so that the fulcrum part of one reed valve and the fulcrum part of the other reed valve are located at the center and the lid part of each reed valve, and each middle part of the valve backer. The reciprocating compressor is characterized in that the valve backers are arranged in different directions with respect to a line connecting the fulcrum portions.
前記弁体固定手段が、前記各弁体の支点部分を前記凹所の各固定部分に固定するための固定部と、各固定部を連結しかつ前記各弁体の支点部分を前記凹所の各固定部分に弾力的に押圧するためのバネ部を一体的にした形体に形成して構成されたことを特徴とする請求項1記載の往復動型圧縮機。 The valve body fixing means connects a fixed portion for fixing a fulcrum portion of each valve body to each fixed portion of the recess, and connects each fixed portion, and connects the fulcrum portion of each valve body to the recess. 2. A reciprocating compressor according to claim 1, wherein a spring portion for elastically pressing each fixed portion is formed in an integrated shape.
JP2006099550A 2006-03-31 2006-03-31 Reciprocating compressor Expired - Fee Related JP4902244B2 (en)

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