WO2004081382A1 - Compressor - Google Patents

Compressor Download PDF

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Publication number
WO2004081382A1
WO2004081382A1 PCT/JP2004/003272 JP2004003272W WO2004081382A1 WO 2004081382 A1 WO2004081382 A1 WO 2004081382A1 JP 2004003272 W JP2004003272 W JP 2004003272W WO 2004081382 A1 WO2004081382 A1 WO 2004081382A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
cylinder block
head
convex portion
gasket
Prior art date
Application number
PCT/JP2004/003272
Other languages
French (fr)
Japanese (ja)
Inventor
Katsutaka Une
Original Assignee
Zexel Valeo Climate Control Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zexel Valeo Climate Control Corporation filed Critical Zexel Valeo Climate Control Corporation
Priority to JP2005503593A priority Critical patent/JP4640645B2/en
Publication of WO2004081382A1 publication Critical patent/WO2004081382A1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036Component parts, details, e.g. sealings, lubrication
    • F04B27/1081Casings, housings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036Component parts, details, e.g. sealings, lubrication
    • F04B27/1045Cylinders

Definitions

  • the present invention relates to a pressure used in a refrigeration cycle or the like, and particularly to a structure for improving the sealing property.
  • a partition partitioning the inner peripheral side of the housing into a suction chamber and the outer peripheral side into a discharge chamber is formed.
  • a presser punched in the cylinder block is located between the suction ports opening into the suction chamber and cooperating with the partition.
  • the lip is formed integrally with the housing, and of the abutting surfaces of the housing that sandwiches the valve plate, the abutting surface of the presser lip is made to protrude more than the abutting surface of the outer peripheral wall (Japanese Unexamined Patent Publication No. — See Japanese Patent Application Publication No. 2000-218).
  • the valve plate tends to curve toward the housing side as the fluid is compressed in the bore (compression chamber) of the cylinder block.
  • the purpose of the present invention is to improve the sealability of the end face of the cylindrical dub mouth by suppressing the deformation of the valve plate by a holding lip having an abutting surface protruding from the abutting surface of the outer peripheral wall.
  • an object of the present invention is to reliably improve the sealing performance at the end face of the cylinder opening.
  • the present invention provides a cylinder block in which a compression chamber is formed, a cylinder head in which a suction chamber and a discharge chamber are defined, and seals an end face of the cylinder block port, and a Ml cylinder block. And a valve plate disposed between the cylinder heads, a flap cylinder port and a gasket disposed between the self-adjusting valve plates, wherein the end face of the fI3 cylinder port port is provided with a cylinder head. It is characterized in that a protruding convex portion is formed on the side.
  • the cylinder block and the gasket are such that the protruding portions come into close contact with each other while pressing the gasket toward the cylinder side, and the valve plate accompanying the compression of the coolant in the compression chamber. Allows bending toward the cylinder head. That is, even if the valve plate is curved toward the cylinder head side, the presence of the convex portion prevents a gap from being formed between the cylinder block and the gasket, and always ensures good sealing performance. it can.
  • the pressure according to the present invention is such that the knitted three convex portions are formed inside or outside or at both sides of a portion facing the partition wall formed inside the cylinder head and separating the ⁇ chamber and the itn self-discharge chamber. It is characterized by having been done.
  • the above-mentioned bending phenomenon of the valve plate is more likely to occur as the fastening members such as the bolts and pins for fixing the cylinder block, the valve plate, the cylinder head and the like are farther from the part where the IS is shaved. . Since the upper portion of the portion corresponding to the inner side and the outer side of the knitting wall is a space in which the suction chamber or the discharge chamber is defined, the above-described bending phenomenon is not likely to occur. Therefore, as in the present configuration, by providing the convex portion at a portion corresponding to the inside or outside or the both sides of the partition wall, it is possible to cope with the curvature of the valve plate and to secure a good sealing property. it can.
  • the height of the convex portion formed on the outside of the leakage barrier is not more than half of the total thickness of the elastic member of the gasket.
  • the shape of the convex portion should be appropriately changed according to use conditions, manufacturing costs, and the like.
  • the manufacturing cost is reduced due to ease of manufacturing. Can be lowered.
  • the knitted convex portion is streamlined along the actual or predicted bay curve ⁇ e of the valve plate, better sealing performance can be obtained.
  • FIG. 1 is a sectional view showing the structure of a compressor according to the present invention.
  • FIG. 2 is a sectional view taken along line AA of the compressor shown in FIG.
  • FIG. 3 is an explanatory view showing the shape of a cylinder work according to the present invention.
  • FIG. 4 is a partially enlarged sectional view showing the structure of the outer convex portion.
  • FIG. 5 is a partially enlarged sectional view showing the structure of the gasket.
  • FIG. 6 is a graph showing a relationship between a distance (radius) from the center of the valve plate and a displacement amount of the valve plate or the convex portion.
  • FIG. 7 is an explanatory diagram showing the shape of the convex portion according to the first embodiment of the present invention.
  • FIG. 8 is an explanatory diagram showing a shape of a convex portion according to the second embodiment of the present invention.
  • FIG. 9 is an explanatory view showing the shape of a convex portion according to the third embodiment of the present invention
  • the compressor 1 shown in FIG. 1 constitutes a part of a refrigeration cycle used in a vehicle air conditioner and pumps refrigerant, and includes a cylinder work 2, a front side cylinder head (hereinafter referred to as a front head). 3, rear cylinder head (hereinafter referred to as rear head) 4, drive shaft 5, swash plate leak 6, piston 7, gasket 8, 12, suction valve 9, valve plate 10, discharge valve 11, etc. It is configured.
  • the cylinder block 2 has a plurality of bores 15 formed therein.
  • the piston 7 is slidably fitted.
  • the mi3 front head 3 is fixed to one end of the cylinder block 2 by a predetermined connecting tool, and a hollow crank chamber 20 is defined therein.
  • a swash plate 6 having a swash plate 22, an angle adjusting mechanism 23, etc. is disposed.
  • the drive shaft 5 is rotatably held by bearings and the like provided on the front head 3 and the cylinder opening 2, and is connected to the knitting 3 swash plate mechanism 6 so as to transmit a driving force.
  • the space in the three-bore 15 becomes a compression chamber 18 whose volume changes due to sliding of the piston 7.
  • a B access chamber 16 and a discharge chamber 17 are defined.
  • the suction chamber 16 and the discharge chamber 17 are formed so as to be able to communicate with a compression chamber 18 formed in a cylinder head 2 and a high-low pressure partition wall 1. 3 and is separated from the discharge chamber 17 and the atmosphere by an atmospheric pressure partition 14.
  • a gasket 8, a suction valve 9, a valve plate 10, a discharge valve 11 and a gasket 12 are sandwiched between the cylinder work 2 and the lead head 4 in order from the cylinder work 2 side.
  • the vicinity of the outer edge of the cylinder work 2 and the large mffi partition wall 14 of the lead 4 are fastened by a plurality of bolts 21.
  • the cylinder work 2 according to the present invention has convex portions 25, 25, 25, 25 have.
  • the valve plate 10 is subjected to a force to bend toward the head 4 as the refrigerant is compressed in the compression chamber 18.
  • this bending phenomenon is likely to occur in the region S inside or outside the portion 24 facing the portion 24 facing the knitting 3 high / low pressure partition wall 13 (see also FIG. 2).
  • the knitting 3 convex portions 25, 25, which deal with the bending phenomenon of the valve plate 10, are formed within the range of the knitting regions S and S '.
  • the height D of the inner convex portion 25 shown in FIG. 3 is appropriately set, and the height D, of the outer convex portion 25 shown in FIG.
  • the elastic members 28, 28 of the gasket 8 shown are set so as to be less than half of the total thickness (t l + t 2) of the gasket 8, ie, D, ⁇ (t l + t 2) Z2.
  • the gasket 8 shown here has a structure in which elastic members 28 and 28 'such as rubber are bonded to both surfaces of a steel plate 27, but the present invention is limited to the structure of the gasket. Not something No. Also, the drawings according to the present case are exaggeratedly drawn on the features of the present invention, and are different from the actual dimensional ratios.
  • the cylinder block 2 and the gasket 8 are confounded with each other while pressing the gasket 8 toward the rear head 4 by the convex portions 25, 25 ', and the refrigerant in the compression chamber 18 is cooled. Since the valve plate 10 is allowed to bend toward the rear head 4 due to compression, a gap is prevented between the cylinder block 2 and the gasket 8, which is good at the end face 19 of the cylinder block 2. A good sealing property can be ensured. Also, eds 3 area S 5 in the convex portions 2 5 formed on, 'of the elastic member 2 8 of the gasket 8, 2 8' height D total thickness (t l + t 2) of less than half As a result, the fastening force of the knitting three bolts 21 can be sufficiently ensured.
  • FIG. 6 is a graph showing the relationship between the distance (radius) from the center of the valve plate 10 and the displacement amount of the valve plate 10 or the convex portion 25.
  • the solid line 30 indicates the experimentally predicted deformation state of the valve plate 10 during operation, and has a gentle streamline shape and a turning point P of the rate of change.
  • a broken line 31 is a straight line passing through the knitting turning point P and having a different inclination, and the convex portion 25 according to the first embodiment has substantially the same shape as the broken line 31. (See Figure 7). That is, the convex portions 2 5, 2 5 5 according to the first ⁇ is composed of a combination of a plurality of planes including the knitting 3 turning point P.
  • FIG. 8 shows the ⁇ ⁇ of the convex portions 40, 40, in the second embodiment.
  • the convex portions 40, 40 correspond to the solid line 3. It has a streamline (polynomial curved surface) shape along the curved shape of the valve plate 10 shown at 0. As a result, more excellent sealing properties can be obtained.
  • the convex portion 4 5, 4 5 ' is Figure 6
  • the dashed-dotted line 3 2 shows the characteristics of the job.
  • the displacement amount reaches 0 with the appropriate change rate (R curved surface).
  • the cylinder block and the gasket strongly constrain each other while pressing the gasket toward the cylinder head by the convex portion, and the compression of the refrigerant in the compression chamber is accompanied. Since the valve plate is allowed to bend toward the cylinder head, there is no gap between the cylinder opening and the gasket.Ensure good sealing performance on the end face of the cylinder opening. Can be.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

In a compressor, a valve plate is caused to bend toward the cylinder head side to reliably enhance sealing capability at an end face of a cylinder block. The compressor has a cylinder block (2) where a compression chamber (18) is formed, a cylinder head (4) where a suction chamber (16) and a discharge chamber (17) are defined and sealing an end face (19) of the cylinder block (2), a valve plate (10) provided between the cylinder block (2) and the cylinder head (4), and a gasket provided between the cylinder block (2) and the valve plate (10). On the end face (19) of the cylinder block (2) is formed a projection portion (25) projecting toward the cylinder head (4) side.

Description

圧縮機 Compressor
技術分野 Technical field
本発明は、 冷凍サイクル等に用いられる圧 に関し、 特にそのシール性の向上 を目的とした構造に関する。  The present invention relates to a pressure used in a refrigeration cycle or the like, and particularly to a structure for improving the sealing property.
明 背景技術 書  Ming background art book
従来の圧縮機においてシール性を向上させるための構造として、 .以下のようなも のがある。ハウジングの内周側を吸入室、 外周側を吐出室として区画する隔壁を形 成し、 シリンダプロヅクに穿設され、 吸入室内に開口する吸入 «間に位置して、 隔壁と協働する押えリプをハウジングと一体的に形成し、 弁板を挟着するハウジン グの衝合面のうち、 押えリプの衝合面を外周壁の衝合面よりも突出せしめたもので ある(特開平 8— 2 0 0 2 1 8号公報参照)。冷媒等の流体を圧送する圧縮機におい ては、 シリンダプロックのボア (圧縮室) 内での流体の圧縮に伴って、 弁板がハウ ジング側へ湾曲する傾向があるが、 この従来の発明は、 外周壁の衝合面よりも突出 した衝合面を有する押えリプによって弁板の変形を抑制することによって、 シリン ダブ口ック端面の封止性の向上を目指したものである。  There are the following structures for improving the sealing performance in conventional compressors. A partition partitioning the inner peripheral side of the housing into a suction chamber and the outer peripheral side into a discharge chamber is formed. A presser punched in the cylinder block is located between the suction ports opening into the suction chamber and cooperating with the partition. The lip is formed integrally with the housing, and of the abutting surfaces of the housing that sandwiches the valve plate, the abutting surface of the presser lip is made to protrude more than the abutting surface of the outer peripheral wall (Japanese Unexamined Patent Publication No. — See Japanese Patent Application Publication No. 2000-218). In a compressor that pumps a fluid such as a refrigerant, the valve plate tends to curve toward the housing side as the fluid is compressed in the bore (compression chamber) of the cylinder block. The purpose of the present invention is to improve the sealability of the end face of the cylindrical dub mouth by suppressing the deformation of the valve plate by a holding lip having an abutting surface protruding from the abutting surface of the outer peripheral wall.
しかしながら、 シリンダプロック端面の封止性を向上させるためには、 シリンダ プロックとガスケットとの当接圧力を増カロさせることが必要であるが、 上記特許文 献 1に示される技術においては、 前記押えリブによる圧力は、 弁板越しにガスケヅ トに伝えられるため、 ガスケットに伝わりにくい。 このため、 シリンダブロックと ガスケットとの当接圧力はあまり増加せず、 シリンダブロック端面におけるシーノレ はそれほど向上しないと予想される。  However, in order to improve the sealing performance of the cylinder block end face, it is necessary to increase the contact pressure between the cylinder block and the gasket. However, in the technique disclosed in Patent Document 1, the presser Since the pressure by the rib is transmitted to the gasket through the valve plate, it is difficult for the pressure to be transmitted to the gasket. For this reason, the contact pressure between the cylinder block and the gasket does not increase much, and it is expected that the seepage at the cylinder block end face will not improve much.
発明の開示 そこで、 本発明は、 シリンダブ口ヅクの端面におけるシール性を確実に向上させ ることを課題とする。 Disclosure of the invention Therefore, an object of the present invention is to reliably improve the sealing performance at the end face of the cylinder opening.
上記課題を解決するために、 本発明は、 圧縮室が形成されたシリンダブロック、 吸 室及び吐出室が画成され前記シリンダブ口ヅクの端面を封止するシリンダへヅ ド、 Ml己シリンダプロヅク及び前記シリンダへヅドの間に配される弁板、 f¾シリ ンダブ口ヅク及び編己弁板の間に配されるガスケヅトを具備する圧縮機において、 fI3シリンダブ口ヅクの端面に、 前記シリンダへヅド側に***した凸状部が形成さ れていることを特徴とするものである。 本発明の圧 によれば、 シリンダプロックとガスケットとは、 凸状部がガスケ ットをシリンダへヅド側へ押付けながら互いに強く密接すると共に、 圧縮室での冷 媒の圧縮に伴う弁板のシリンダヘッド側への湾曲を許容する。 即ち、 前記凸状部の 存在により、 たとえ弁板がシリンダへッド側へ湾曲したとしても、 シリンダプロヅ クとガスケットとの間に隙間ができることが防止され、 常に良好なシール性を確保 することができる。  In order to solve the above problems, the present invention provides a cylinder block in which a compression chamber is formed, a cylinder head in which a suction chamber and a discharge chamber are defined, and seals an end face of the cylinder block port, and a Ml cylinder block. And a valve plate disposed between the cylinder heads, a flap cylinder port and a gasket disposed between the self-adjusting valve plates, wherein the end face of the fI3 cylinder port port is provided with a cylinder head. It is characterized in that a protruding convex portion is formed on the side. According to the pressure of the present invention, the cylinder block and the gasket are such that the protruding portions come into close contact with each other while pressing the gasket toward the cylinder side, and the valve plate accompanying the compression of the coolant in the compression chamber. Allows bending toward the cylinder head. That is, even if the valve plate is curved toward the cylinder head side, the presence of the convex portion prevents a gap from being formed between the cylinder block and the gasket, and always ensures good sealing performance. it can.
また、 本発明に係る圧!^は、 編3凸状部が、 前記シリンダヘッドの内部に形成 され ϊϊΒ¾λ室と itn己吐出室とを隔てる隔壁と対峙する部分の内側又は外側、 又は 両側に形成されていることを特徴とするものである。  Further, the pressure according to the present invention is such that the knitted three convex portions are formed inside or outside or at both sides of a portion facing the partition wall formed inside the cylinder head and separating the λλ chamber and the itn self-discharge chamber. It is characterized by having been done.
上述したような弁板の湾曲現象は、 シリンダプロック、 弁板、 シリンダへヅド等 を固定させるボルト、 ピン等の締結用部材が ISけられた部分から離れているほど、 生じやすいものである。編 鬲壁の内側及び外側に相当する部分は、 その上部が吸 入室又は吐出室が画成された空間となっているために、上記湾曲現象が生じゃすい。 そこで、 本構成のように、 前記隔壁よりも内側又は外側、 又は両側に相当する部分 に前記凸状部を設けることにより、 弁板の湾曲を対処して良好なシール性を確保す ることができる。  The above-mentioned bending phenomenon of the valve plate is more likely to occur as the fastening members such as the bolts and pins for fixing the cylinder block, the valve plate, the cylinder head and the like are farther from the part where the IS is shaved. . Since the upper portion of the portion corresponding to the inner side and the outer side of the knitting wall is a space in which the suction chamber or the discharge chamber is defined, the above-described bending phenomenon is not likely to occur. Therefore, as in the present configuration, by providing the convex portion at a portion corresponding to the inside or outside or the both sides of the partition wall, it is possible to cope with the curvature of the valve plate and to secure a good sealing property. it can.
また、 漏己隔壁の外側に形成された凸状部の高さは、 前記ガスケットの弾性部材 の全厚みの半分以下であることが好ましい。  Further, it is preferable that the height of the convex portion formed on the outside of the leakage barrier is not more than half of the total thickness of the elastic member of the gasket.
前記凸状部の高さが大き過ぎると、 前記締結用部材の締結力に影響し、 かえって シリンダプロヅクとガスケヅトとの当接力が弱まってしまう恐れがあるが、 本構成 のようにすることによって、 ガスケヅトの弾性部材が凸状部を許容するので、 j|3 締結力の低下を回避することができる。 If the height of the convex portion is too large, it affects the fastening force of the fastening member, and rather Although the contact force between the cylinder block and the gasket may be weakened, this configuration avoids a decrease in the j | 3 fastening force because the elastic member of the gasket allows a convex portion. be able to.
また、 凸状部の形状は、 使用条件、 製造コスト等に応じて適宜変更すべきもので あるが、 前記凸状部を複数の平面を組合せた开狱とすることにより、 製造の容易さ からコストを低くすることができる。 また、 弁板の実際の、 若しくは予測された湾 曲开娥に沿って、 編己凸状部を流線形とすれば、 より優れたシール性を獲得するこ とがでさる。 図面の簡単な説明  In addition, the shape of the convex portion should be appropriately changed according to use conditions, manufacturing costs, and the like. However, by forming the convex portion as a combination of a plurality of planes, the manufacturing cost is reduced due to ease of manufacturing. Can be lowered. In addition, if the knitted convex portion is streamlined along the actual or predicted bay curve 开 e of the valve plate, better sealing performance can be obtained. BRIEF DESCRIPTION OF THE FIGURES
第 1図は、本発明に係る圧縮機の構造を示す断面図である。第 2図は、第 1図に 示す圧縮機の A— A断面図である。第 3図は、 本発明に係るシリンダプロヅクの形 状を示す説明図である。第 4図は、 外側の凸状部の構造を示す一部拡大断面図であ る。 第 5図は、 ガスケットの構造を示す一部拡大断面図である。第 6図は、 弁板の 中心からの距離(半径) と、 弁板若しくは凸状部の変位量との関係を示すグラフで ある。第 7図は、 本発明の第 1の実施の形態に係る凸状部の形状を示す説明図であ る。第 8図は、本発明の第 2の実施の形態に係る凸状部の形状を示す説明図である。 第 9図は、 本発明の第 3の実施の形態に係る凸状部の形状を示す説明図である o  FIG. 1 is a sectional view showing the structure of a compressor according to the present invention. FIG. 2 is a sectional view taken along line AA of the compressor shown in FIG. FIG. 3 is an explanatory view showing the shape of a cylinder work according to the present invention. FIG. 4 is a partially enlarged sectional view showing the structure of the outer convex portion. FIG. 5 is a partially enlarged sectional view showing the structure of the gasket. FIG. 6 is a graph showing a relationship between a distance (radius) from the center of the valve plate and a displacement amount of the valve plate or the convex portion. FIG. 7 is an explanatory diagram showing the shape of the convex portion according to the first embodiment of the present invention. FIG. 8 is an explanatory diagram showing a shape of a convex portion according to the second embodiment of the present invention. FIG. 9 is an explanatory view showing the shape of a convex portion according to the third embodiment of the present invention.
発明を実拖するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
以下、 添付した図面を参考にして本発明の実施の形態を説明する。第 1図に示す 圧縮機 1は、 車両用空調装置に用いられる冷凍サイクルの一部を構成して冷媒を圧 送するものであり、 シリンダプロヅク 2、 フロント側シリンダヘッド (以下、 フロ ントヘッド) 3、 リア側シリンダヘッド (以下、 リアへヅド) 4、 駆動軸 5、 斜板 漏 6、 ピストン 7、 ガスケヅト 8 , 1 2、 吸入弁 9、 弁板 1 0、 吐出弁 1 1等を 有して構成されている。  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The compressor 1 shown in FIG. 1 constitutes a part of a refrigeration cycle used in a vehicle air conditioner and pumps refrigerant, and includes a cylinder work 2, a front side cylinder head (hereinafter referred to as a front head). 3, rear cylinder head (hereinafter referred to as rear head) 4, drive shaft 5, swash plate leak 6, piston 7, gasket 8, 12, suction valve 9, valve plate 10, discharge valve 11, etc. It is configured.
前記シリンダブ口ック 2には、 複数のボア 1 5が穿設されており、 各ボア 1 5に ピストン 7が摺動自在に嵌挿されている。 mi3フロントヘッド 3は、 前記シリンダ プロック 2の一端側に所定の連結具によつて固定され、 その内部には中空状のクラ ンク室 2 0が画成されている。備 3クランク室 2 0内には、 斜板 2 2、 角度調節機 構 2 3等を有して構成される斜板 « 6が配置されており、 この余 41反 2 2に前記ピ ストン 7が揺動自在に連結されている。前記駆動軸 5は、 フロントヘッド 3及びシ リンダブ口ヅク 2に設けられたベアリング等によって回転自在に保持されると共に、 編 3斜板機構 6に駆動力を伝達するように連結されている。 これにより、 編 3ボア 1 5内の空間は、 ビストン 7の摺動により容積が変化する圧縮室 1 8となる。 The cylinder block 2 has a plurality of bores 15 formed therein. The piston 7 is slidably fitted. The mi3 front head 3 is fixed to one end of the cylinder block 2 by a predetermined connecting tool, and a hollow crank chamber 20 is defined therein. In the crank chamber 20, a swash plate 6 having a swash plate 22, an angle adjusting mechanism 23, etc. is disposed. Are swingably connected. The drive shaft 5 is rotatably held by bearings and the like provided on the front head 3 and the cylinder opening 2, and is connected to the knitting 3 swash plate mechanism 6 so as to transmit a driving force. Thus, the space in the three-bore 15 becomes a compression chamber 18 whose volume changes due to sliding of the piston 7.
前記リアへヅ ド 4には、 B及入室 1 6及び吐出室 1 7が画成されている。 これら吸 入室 1 6及び吐出室 1 7は、 第 1〜3図に示すように、 備3シリンダへッド 2に形 成された圧縮室 1 8と連通可能に形成され、 また高低圧隔壁 1 3によって互いに仕 切られていると共に、 大気圧隔壁 1 4によって吐出室 1 7と大気中とカ^:切られて いる。前記シリンダプロヅク 2とリァへヅド 4との間には、 シリンダプロヅク 2側 から順にガスケヅト 8、 吸入弁 9、 弁板 1 0、 吐出弁 1 1、 ガスケヅト 1 2が挟持 されており、 第 2図に示すように、 シリンダプロヅク 2の外縁近傍とリァへヅド 4 の大 mffi隔壁 1 4とが複数のボルト 2 1により締結されている。 ·  In the rear head 4, a B access chamber 16 and a discharge chamber 17 are defined. As shown in FIGS. 1 to 3, the suction chamber 16 and the discharge chamber 17 are formed so as to be able to communicate with a compression chamber 18 formed in a cylinder head 2 and a high-low pressure partition wall 1. 3 and is separated from the discharge chamber 17 and the atmosphere by an atmospheric pressure partition 14. A gasket 8, a suction valve 9, a valve plate 10, a discharge valve 11 and a gasket 12 are sandwiched between the cylinder work 2 and the lead head 4 in order from the cylinder work 2 side. As shown in FIG. 2, the vicinity of the outer edge of the cylinder work 2 and the large mffi partition wall 14 of the lead 4 are fastened by a plurality of bolts 21. ·
本発明に係るシリンダプロヅク 2は、 第 3図に示すように、 そのリァへッド 4側 の端面 1 9に、 該リアへヅ ド 4側に***した凸状部 2 5 , 2 5, を有している。前 記弁板 1 0には、 圧縮室 1 8内での冷媒の圧縮に伴って、 リァへヅド 4側へ湾曲さ せる力が働く。特に、 編 3高低圧隔壁 1 3と対峙する部分 2 4より内側の領域 S、 又は外側の領域 S, (第 2図も参照)において、 この湾曲現象が起こりやすい。編 3 凸状部 2 5, 2 5, は、 この弁板 1 0の湾曲現象に対処するものであり、 編己領域 S及び S ' の範囲内において形成されている。 また、 第 3図に示す前記内側の凸状 部 2 5の高さ Dは、適宜設定され、第 4図に示す前記外側の凸状部 2 5,の高さ D, は、 第 5図に示すガスケット 8の弾性部材 2 8, 2 8, の全厚さ (t l+ t 2) の半 分以下、 即ち D, ≤ ( t l+ t 2) Z2となるように設定されている。 尚、 ここで示 したガスケット 8は、 鋼板 2 7の両面にゴム等の弾性部材 2 8, 2 8 ' が接着され た構造を有するものであるが、 本発明はガスケヅ卜の構造に限定されるものではな い。 また、 本件に係る図面は、 本発明の特徴を誇張して描かれており、 実際の寸法 比とは異なるものである。 As shown in FIG. 3, the cylinder work 2 according to the present invention has convex portions 25, 25, 25, 25 have. The valve plate 10 is subjected to a force to bend toward the head 4 as the refrigerant is compressed in the compression chamber 18. In particular, this bending phenomenon is likely to occur in the region S inside or outside the portion 24 facing the portion 24 facing the knitting 3 high / low pressure partition wall 13 (see also FIG. 2). The knitting 3 convex portions 25, 25, which deal with the bending phenomenon of the valve plate 10, are formed within the range of the knitting regions S and S '. Also, the height D of the inner convex portion 25 shown in FIG. 3 is appropriately set, and the height D, of the outer convex portion 25 shown in FIG. The elastic members 28, 28 of the gasket 8 shown are set so as to be less than half of the total thickness (t l + t 2) of the gasket 8, ie, D, ≤ (t l + t 2) Z2. The gasket 8 shown here has a structure in which elastic members 28 and 28 'such as rubber are bonded to both surfaces of a steel plate 27, but the present invention is limited to the structure of the gasket. Not something No. Also, the drawings according to the present case are exaggeratedly drawn on the features of the present invention, and are different from the actual dimensional ratios.
これにより、 シリンダブロック 2とガスケット 8とが、 前記凸状部 2 5 , 2 5 ' によってガスケット 8をリアへヅド 4側へ押付けながら互いに激妾されると共に、 圧縮室 1 8での冷媒の圧縮に伴う弁板 1 0のリアへヅド 4側への湾曲を許容するの で、 シリンダブロック 2とガスケット 8との間に隙間ができることが防止され、 シ リンダブロック 2の端面 1 9において良好なシール性を確保することができる。 ま た、 編 3領域 S 5 内に形成された凸状部 2 5, の高さ D ' が、 ガスケット 8の弾性 部材 2 8 , 2 8 ' の全厚さ (t l+ t 2) の半分以下であることにより、 編 3ボルト 2 1の締結力を十分に確保することができる。 As a result, the cylinder block 2 and the gasket 8 are confounded with each other while pressing the gasket 8 toward the rear head 4 by the convex portions 25, 25 ', and the refrigerant in the compression chamber 18 is cooled. Since the valve plate 10 is allowed to bend toward the rear head 4 due to compression, a gap is prevented between the cylinder block 2 and the gasket 8, which is good at the end face 19 of the cylinder block 2. A good sealing property can be ensured. Also, eds 3 area S 5 in the convex portions 2 5 formed on, 'of the elastic member 2 8 of the gasket 8, 2 8' height D total thickness (t l + t 2) of less than half As a result, the fastening force of the knitting three bolts 21 can be sufficiently ensured.
第 6図に示すのは、 弁板 1 0の中心からの距離(半径) と、 弁板 1 0若しくは凸 状部 2 5の変位量との関係を示すグラフである。実線 3 0は、 実験的に予測された 運転時における弁板 1 0の変形状態を示すものであり、 なだらかな流線形状である と共に、 その変化率の転換点 Pを有している。破線 3 1は、 編己転換点 Pを通り異 なった傾きを有する直線であり、 第 1の実施の形態に係る凸状部 2 5は、 この破線 3 1と略同形状を有している(第 7図参照)。即ち、第 1の謹の形態に係る凸状部 2 5, 2 5 5は、編 3転換点 Pを含んだ複数の平面の組合せにより構成されている。 前記凸状部 2 5をこのような形状とすることにより、十分なシール性を確保しつつ、 製造の容易さからコストを低く抑えることができる。 FIG. 6 is a graph showing the relationship between the distance (radius) from the center of the valve plate 10 and the displacement amount of the valve plate 10 or the convex portion 25. The solid line 30 indicates the experimentally predicted deformation state of the valve plate 10 during operation, and has a gentle streamline shape and a turning point P of the rate of change. A broken line 31 is a straight line passing through the knitting turning point P and having a different inclination, and the convex portion 25 according to the first embodiment has substantially the same shape as the broken line 31. (See Figure 7). That is, the convex portions 2 5, 2 5 5 according to the first謹is composed of a combination of a plurality of planes including the knitting 3 turning point P. By making the protruding portion 25 have such a shape, it is possible to keep the cost low due to the ease of production while ensuring sufficient sealing performance.
また、 第 8図に示すのは、 第 2の実施の形態における凸状部 4 0 , 4 0, の开狱 を示すものであり、 この凸状部 4 0 , 4 0, は、 前記実線 3 0に示される弁板 1 0 の湾曲形状に沿った流線(多項次曲面)型状を有したものである。 これにより、 よ り優れたシール性を獲得することができる。  FIG. 8 shows the 开 狱 of the convex portions 40, 40, in the second embodiment. The convex portions 40, 40, correspond to the solid line 3. It has a streamline (polynomial curved surface) shape along the curved shape of the valve plate 10 shown at 0. As a result, more excellent sealing properties can be obtained.
また、 第 9図に示すのは、 第 3の難の形態における凸状部 4 5 , 4 55 の开狱 を示すものであり、 この凸状部 4 5, 4 5 ' は、 第 6図中の一点鎖線 3 2によって その職の特徴が示されている。 この一点鎖線 3 2は、 中心点(半径 = 0 ) から前 記転換点 Pまでは前記実線 3 0に示される弁板 1 0の湾曲形状に沿っていると共に、 該転換点 P以上の部分では、 実線 3 0のようにその変化率を + (プラス) には転ぜ ず、 赚した適宜な変化率をもって変位量 = 0に至るものである(R曲面状)。この ような凸状音 5の形状により、 適度な製造性を確保しつつ良好なシール性を獲得 することができる。 産業上の利用可能性 Further, the shown in Figure 9, which shows the开狱convex portion 4 5 4 5 5 in the form of a third flame, the convex portion 4 5, 4 5 'is Figure 6 The dashed-dotted line 3 2 shows the characteristics of the job. The one-dot chain line 32 extends from the center point (radius = 0) to the turning point P along the curved shape of the valve plate 10 shown by the solid line 30 and at the portion beyond the turning point P , Change the rate of change to + (plus) as shown by the solid line 30 First, the displacement amount reaches 0 with the appropriate change rate (R curved surface). With such a shape of the convex sound 5, it is possible to obtain good sealing properties while securing appropriate manufacturability. Industrial applicability
以上のように、 本発明によれば、 シリンダブロックとガスケヅ トとが、 凸状部に よってガスケヅトをシリンダへッド側へ押付けながら互いに強く慰妾すると共に、 圧縮室での冷媒の圧縮に伴う弁板のシリンダへヅド側への湾曲を許容するので、 シ リンダブ口ックとガスケットとの間に隙間ができることが防止さ シリンダブ口 ヅクの端面におレヽて良好なシール性を確保することができる。  As described above, according to the present invention, the cylinder block and the gasket strongly constrain each other while pressing the gasket toward the cylinder head by the convex portion, and the compression of the refrigerant in the compression chamber is accompanied. Since the valve plate is allowed to bend toward the cylinder head, there is no gap between the cylinder opening and the gasket.Ensure good sealing performance on the end face of the cylinder opening. Can be.

Claims

請 求 の 範 囲 The scope of the claims
1 . 圧縮室が形成されたシリンダブロック、 吸入室及び吐出室が画成され編己シリ ンダブ口ヅクの耑面を封止するシリンダへヅド、 前記シリンダブ口ック及び前記シ リンダへヅドの間に配される弁板、 前記シリンダブ口ック及び編己弁板の間に配さ れるガスケヅトを具備する圧縮機において、 1. A cylinder block in which a compression chamber is formed, a suction head and a discharge chamber are defined, and a cylinder head for sealing a surface of a self-sealing cylinder port, a head for the cylinder block and the cylinder head. A compressor provided with a gasket disposed between the cylinder block and the knitted valve plate;
前記シリンダブ口ヅクの端面に、 編己シリンダへヅド側に***した凸状部が形成 されていることを特徴とする圧 。  A pressure, characterized in that a convex portion protruding toward the head side of the knitting cylinder is formed on an end face of the cylinder opening.
2 . 前記凸状部は、 前記シリンダヘッドの内部に形成され前記吸入室と前記吐出室 とを隔てる隔壁と対峙する部分の内側又は外側、 又は両側に形成されていることを 特徴とする請求項 1記載の圧縮機。  2. The convex portion is formed inside or outside or on both sides of a portion facing the partition formed inside the cylinder head and separating the suction chamber and the discharge chamber. The compressor according to 1.
3 . 前記隔壁と対峙する部分よりも外側に形成された凸状部の髙さは、 前記ガスケ ヅトの弾性部材の全厚みの半分以下であることを特徴とする請求項 2記載の圧縮機。 3. The compressor according to claim 2, wherein the height of the convex portion formed outside the portion facing the partition is less than half the total thickness of the elastic member of the gasket. .
4. 編 3凸状部の开狱は、 複数の平面の組合せであることを特徴とする請求項 2又 は 3記載の圧繊。 4. The compressed fiber according to claim 2, wherein the triangle of the three convex portions is a combination of a plurality of planes.
5 . 前記凸状部の細ま、 流線形であることを特徴とする請求項 2又は 3記載の圧  5. The pressure according to claim 2, wherein the convex portion is narrow and streamlined.
PCT/JP2004/003272 2003-03-14 2004-03-12 Compressor WO2004081382A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08200218A (en) * 1995-01-31 1996-08-06 Toyota Autom Loom Works Ltd Reciprocation type compressor
JP2002115654A (en) * 2000-10-10 2002-04-19 Toyota Industries Corp Seal structure of compressor
JP2002242838A (en) * 2001-02-19 2002-08-28 Toyota Industries Corp Compressor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0278777U (en) * 1988-12-02 1990-06-18

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08200218A (en) * 1995-01-31 1996-08-06 Toyota Autom Loom Works Ltd Reciprocation type compressor
JP2002115654A (en) * 2000-10-10 2002-04-19 Toyota Industries Corp Seal structure of compressor
JP2002242838A (en) * 2001-02-19 2002-08-28 Toyota Industries Corp Compressor

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