JP6201341B2

JP6201341B2 - Rotary compressor

Info

Publication number: JP6201341B2
Application number: JP2013039429A
Authority: JP
Inventors: 浩志鵜飼
Original assignee: Fujitsu General Ltd
Current assignee: Fujitsu General Ltd
Priority date: 2013-02-28
Filing date: 2013-02-28
Publication date: 2017-09-27
Anticipated expiration: 2033-02-28
Also published as: JP2014167283A

Description

本発明は、例えば、空気調和機に使用されるロータリ圧縮機に関する。 The present invention relates to a rotary compressor used for an air conditioner, for example.

従来、ロータリ圧縮機１の圧縮部１２（図１参照）の下端板１６０Ｓ及び上端板１６０Ｔには、第１、第２吐出孔１９０Ｓ、１９０Ｔを開閉するリード弁型の第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁２００Ｓ、２００Ｔの撓み開弁量を制限するための第１、第２吐出弁押え９０１Ｓ、９０１Ｔ（図８参照）を収容し、第１、第２リベット２０３Ｓ、２０３Ｔ（図８参照）により取付けるための、第１、第２溝部１６３Ｓ、１６３Ｔが形成されている。 Conventionally, the lower end plate 160S and the upper end plate 160T of the compression section 12 (see FIG. 1) of the rotary compressor 1 have reed valve type first and second discharge valves that open and close the first and second discharge holes 190S and 190T. 200S, 200T and first and second discharge valve pressers 901S, 901T (see FIG. 8) for limiting the deflection opening amounts of the first and second discharge valves 200S, 200T are accommodated, and the first and second rivets First and second groove portions 163S and 163T are formed for attachment by 203S and 203T (see FIG. 8).

第１、第２溝部１６３Ｓ、１６３Ｔの第１、第２吐出孔１９０Ｓ、１９０Ｔ側は、径（幅）が拡大されて第１、第２吐出孔側拡径部１６３Ｓｂ、１６３Ｔｂが形成されている。第１、第２吐出孔側拡径部１６３Ｓｂ、１６３Ｔｂの径（幅）が拡大されて形成されているのは、第１、第２吐出孔１９０Ｓ、１９０Ｔから吐出され、第１、第２吐出弁２００Ｓ、２００Ｔを押し開いて噴出する圧縮冷媒ガスの流路を確保するためである。 The diameters (widths) of the first and second groove portions 163S and 163T on the first and second discharge holes 190S and 190T sides are enlarged to form first and second discharge hole side enlarged portions 163Sb and 163Tb. . The diameters (widths) of the first and second discharge hole side enlarged diameter portions 163Sb and 163Tb are enlarged and discharged from the first and second discharge holes 190S and 190T. This is to secure a flow path for the compressed refrigerant gas that is ejected by pushing the valves 200S and 200T open.

第１、第２溝部１６３Ｓ、１６３Ｔと、第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁押え９０１Ｓ、９０１Ｔとの幅方向の間隙は、０．１ｍｍ〜０．３ｍｍ程度であり、間隙が狭くされている。これは、第１、第２吐出弁２００Ｓ、２００Ｔを第１、第２溝部１６３Ｓ、１６３Ｔに落し込んだとき、第１、第２吐出弁２００Ｓ、２００Ｔが第１、第２吐出孔１９０Ｓ、１９０Ｔからずれないようにするためである。 The gap in the width direction between the first and second groove portions 163S and 163T and the first and second discharge valves 200S and 200T and the first and second discharge valve pressers 901S and 901T is about 0.1 mm to 0.3 mm. Yes, the gap is narrowed. This is because when the first and second discharge valves 200S and 200T are dropped into the first and second groove portions 163S and 163T, the first and second discharge valves 200S and 200T become the first and second discharge holes 190S and 190T, respectively. This is so as not to deviate from.

また、従来、シリンダと軸受具（端板）とでシリンダ室を形成し、このシリンダ室内に吸込まれた冷媒ガスを圧縮して、上記軸受具に設けられる吐出弁を開放させて吐出する密閉形圧縮機（ロータリ圧縮機）において、上記軸受具に凹部（溝部）を設け、この凹部（溝部）に弁押えを圧入固定し、この弁押えと上記軸受凹部（溝部）との間に上記吐出弁を開閉自在に介設した密閉形圧縮機（ロータリ圧縮機）が開示されている。上記弁押えと吐出弁は、取付け用孔を備えており、上記軸受具（端板）をシリンダに取付ける取付けボルトを上記取付け用孔に挿入して、軸受具（端板）とともに弁押えと吐出弁をシリンダに取付け固定している（例えば、特許文献１参照）。 Conventionally, a cylinder chamber is formed by a cylinder and a bearing tool (end plate), the refrigerant gas sucked into the cylinder chamber is compressed, and a discharge valve provided in the bearing tool is opened to discharge the cylinder gas. In a compressor (rotary compressor), a recess (groove) is provided in the bearing tool, a valve presser is press-fitted and fixed in the recess (groove), and the discharge valve is interposed between the valve presser and the bearing recess (groove). A hermetic compressor (rotary compressor) is disclosed that is openable and closable. The valve retainer and the discharge valve are provided with mounting holes. A mounting bolt for mounting the bearing tool (end plate) to the cylinder is inserted into the mounting hole, and together with the bearing tool (end plate), the valve presser and discharge A valve is attached and fixed to the cylinder (for example, see Patent Document 1).

特開平８−２００２６４号公報JP-A-8-200264

しかしながら、図８を参照して説明した上記従来の技術及び特許文献１に記載された従来の技術によれば、溝部と吐出弁押えとの横方向の間隙が狭いので、リベットのカシメ又は取付ボルトの締付けにより吐出弁押えが圧縮され、リベットの軸端部が潰れると共に軸部の径が増大し、吐出弁押えが幅方向に膨張して溝部の内壁を押圧する。そのため、端板が歪んでシリンダ当接面の平面度が悪化し、端板のシリンダ当接面とシリンダとの密着性、気密性が低下する、という問題がある。 However, according to the conventional technique described with reference to FIG. 8 and the conventional technique described in Patent Document 1, the lateral gap between the groove and the discharge valve holder is narrow, so that the rivet caulking or the mounting bolt By tightening, the discharge valve presser is compressed, the shaft end of the rivet is crushed and the diameter of the shaft increases, and the discharge valve presser expands in the width direction to press the inner wall of the groove. Therefore, there is a problem that the end plate is distorted, the flatness of the cylinder contact surface is deteriorated, and the adhesion and airtightness between the cylinder contact surface of the end plate and the cylinder are lowered.

本発明は、上記に鑑みてなされたものであって、吐出弁及び吐出弁押えをリベットにより端板の溝部に組付けても、端板が歪むこのとないロータリ圧縮機を得ることを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to obtain a rotary compressor in which even if a discharge valve and a discharge valve presser are assembled to a groove portion of an end plate by a rivet, the end plate is distorted. To do.

上述した課題を解決し、目的を達成するために、本発明は、上部に冷媒の吐出部が設けられ下部側面に冷媒の吸入部が設けられ密閉された縦置きの圧縮機筐体と、前記圧縮機筐体の下部に配置され、環状のシリンダと、軸受部及び吐出弁部を有し前記シリンダの端部を閉塞する端板と、前記軸受部に支持された回転軸の偏芯部に嵌合され前記シリンダのシリンダ内壁に沿って該シリンダ内を公転し前記シリンダ内壁との間に作動室を形成する環状ピストンと、前記シリンダのベーン溝内から前記作動室内に突出して前記環状ピストンに当接し前記作動室を吸入室と圧縮室とに区画するベーンと、を備え、前記吸入部を通して冷媒を吸入し、前記圧縮機筐体内を通して前記吐出部から冷媒を吐出する圧縮部と、前記圧縮機筐体の上部に配置され、前記回転軸を介して前記圧縮部を駆動するモータと、を備えるロータリ圧縮機において、前記吐出弁部を構成する吐出弁押えのリベット孔の近傍に、肉抜き部を設け、前記肉抜き部は、前記リベット孔の吐出孔側に設けられた矩形の穴と、反吐出孔側に設けられた矩形の切欠きと、を含んでなることを特徴とする。 In order to solve the above-described problems and achieve the object, the present invention includes a vertically mounted compressor housing that is provided with a refrigerant discharge portion at an upper portion and a refrigerant suction portion at a lower side surface and sealed. An annular cylinder, an end plate that has a bearing portion and a discharge valve portion and closes the end portion of the cylinder, and an eccentric portion of a rotating shaft supported by the bearing portion are disposed at the lower portion of the compressor housing. An annular piston that is fitted and revolves along the cylinder inner wall of the cylinder to form a working chamber with the cylinder inner wall, and protrudes into the working chamber from the vane groove of the cylinder to the annular piston. A compression section that abuts and divides the working chamber into a suction chamber and a compression chamber, sucks refrigerant through the suction section, and discharges the refrigerant from the discharge section through the compressor housing, and the compression Placed at the top of the machine casing In the rotary compressor and a motor for driving the compression unit through the rotary shaft, in the vicinity of the rivet hole of the discharge valve retainer constituting the discharge valve unit, the hollow portions provided, the lightening portion And a rectangular hole provided on the discharge hole side of the rivet hole, and a rectangular notch provided on the counter discharge hole side .

本発明によれば、吐出弁及び吐出弁押えをリベットにより端板の溝部に組付けても、端板が歪んで平面度が悪化し、端板とシリンダとの密着性、気密性が低下することはない。 According to the present invention, even when the discharge valve and the discharge valve retainer are assembled to the groove portion of the end plate by rivets, the end plate is distorted and the flatness is deteriorated, and the adhesion and airtightness between the end plate and the cylinder are reduced. There is nothing.

図１は、本発明に係るロータリ圧縮機の実施例を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing an embodiment of a rotary compressor according to the present invention. 図２は、実施例の第１、第２の圧縮部の上から見た横断面図である。FIG. 2 is a cross-sectional view seen from above the first and second compression portions of the embodiment. 図３は、実施例１の第１、第２吐出弁押えを示す平面図である。FIG. 3 is a plan view showing the first and second discharge valve holders according to the first embodiment. 図４は、実施例２の第１、第２吐出弁押えを示す平面図である。FIG. 4 is a plan view showing first and second discharge valve pressers according to the second embodiment. 図５は、実施例３の第１、第２吐出弁押えを示す平面図である。FIG. 5 is a plan view showing first and second discharge valve pressers according to the third embodiment. 図６は、実施例４の第１、第２吐出弁押えを示す平面図である。FIG. 6 is a plan view showing first and second discharge valve pressers according to the fourth embodiment. 図７は、実施例５の第１、第２吐出弁押えを示す平面図である。FIG. 7 is a plan view showing first and second discharge valve holders according to the fifth embodiment. 図８は、従来の第１、第２吐出弁及び第１、第２吐出弁押えを組付けた上、下端板の部分平面図である。FIG. 8 is a partial plan view of the lower end plate after assembling conventional first and second discharge valves and first and second discharge valve pressers.

以下に、本発明に係るロータリ圧縮機の実施例を図面に基づいて詳細に説明する。なお、この実施例によりこの発明が限定されるものではない。 Embodiments of a rotary compressor according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

図１は、本発明に係るロータリ圧縮機の実施例を示す縦断面図であり、図２は、実施例の第１、第２の圧縮部の上から見た横断面図である。 FIG. 1 is a longitudinal sectional view showing an embodiment of a rotary compressor according to the present invention, and FIG. 2 is a transverse sectional view seen from above the first and second compression portions of the embodiment.

図１に示すように、実施例のロータリ圧縮機１は、密閉された縦置き円筒状の圧縮機筐体１０の下部に配置された圧縮部１２と、圧縮機筐体１０の上部に配置され、回転軸１５を介して圧縮部１２を駆動するモータ１１と、を備えている。 As shown in FIG. 1, the rotary compressor 1 according to the embodiment is disposed at a lower portion of a sealed vertical cylindrical compressor housing 10 and an upper portion of the compressor housing 10. And a motor 11 that drives the compression unit 12 via the rotary shaft 15.

モータ１１のステータ１１１は、円筒状に形成され、圧縮機筐体１０の内周面に焼きばめされて固定されている。モータ１１のロータ１１２は、円筒状のステータ１１１の内部に配置され、モータ１１と圧縮部１２とを機械的に接続する回転軸１５に焼きばめされて固定されている。 The stator 111 of the motor 11 is formed in a cylindrical shape, and is fixed by being shrink-fitted on the inner peripheral surface of the compressor housing 10. The rotor 112 of the motor 11 is disposed inside the cylindrical stator 111 and is fixed by being shrink-fitted to a rotating shaft 15 that mechanically connects the motor 11 and the compression unit 12.

圧縮部１２は、第１の圧縮部１２Ｓと、第１の圧縮部１２Ｓと並列に配置され第１の圧縮部１２Ｓの上側に積層された第２の圧縮部１２Ｔと、を備えている。図２に示すように、第１、第２の圧縮部１２Ｓ、１２Ｔは、第１、第２側方張出部１２２Ｓ、１２２Ｔに、放射状に第１、第２吸入孔１３５Ｓ、１３５Ｔ、第１、第２ベーン溝１２８Ｓ、１２８Ｔが設けられた環状の第１、第２シリンダ１２１Ｓ、１２１Ｔを備えている。 The compression unit 12 includes a first compression unit 12S and a second compression unit 12T that is arranged in parallel with the first compression unit 12S and stacked on the upper side of the first compression unit 12S. As shown in FIG. 2, the first and second compression parts 12S and 12T are arranged on the first and second side projecting parts 122S and 122T in a radial manner with the first and second suction holes 135S and 135T, , Annular first and second cylinders 121S and 121T provided with second vane grooves 128S and 128T are provided.

図２に示すように、第１、第２シリンダ１２１Ｓ、１２１Ｔには、モータ１１の回転軸１５と同心に、円形の第１、第２シリンダ内壁１２３Ｓ、１２３Ｔが形成されている。第１、第２シリンダ内壁１２３Ｓ、１２３Ｔ内には、シリンダ内径よりも小さい外径の第１、第２環状ピストン１２５Ｓ、１２５Ｔが夫々配置され、第１、第２シリンダ内壁１２３Ｓ、１２３Ｔと、第１、第２環状ピストン１２５Ｓ、１２５Ｔとの間に、冷媒ガスを吸入し圧縮して吐出する第１、第２作動室１３０Ｓ、１３０Ｔが形成される。 As shown in FIG. 2, circular first and second cylinder inner walls 123 </ b> S and 123 </ b> T are formed in the first and second cylinders 121 </ b> S and 121 </ b> T concentrically with the rotating shaft 15 of the motor 11. In the first and second cylinder inner walls 123S and 123T, first and second annular pistons 125S and 125T having an outer diameter smaller than the cylinder inner diameter are arranged, respectively, and the first and second cylinder inner walls 123S and 123T, The first and second working chambers 130S and 130T are formed between the first and second annular pistons 125S and 125T for sucking, compressing and discharging the refrigerant gas.

第１、第２シリンダ１２１Ｓ、１２１Ｔには、第１、第２シリンダ内壁１２３Ｓ、１２３Ｔから径方向に、シリンダ高さ全域に亘る第１、第２ベーン溝１２８Ｓ、１２８Ｔが形成され、第１、第２ベーン溝１２８Ｓ、１２８Ｔ内に、夫々平板状の第１、第２ベーン１２７Ｓ、１２７Ｔが、摺動自在に嵌合されている。 First and second vane grooves 128S and 128T are formed in the first and second cylinders 121S and 121T in the radial direction from the first and second cylinder inner walls 123S and 123T over the entire cylinder height. Flat plate-like first and second vanes 127S and 127T are slidably fitted into the second vane grooves 128S and 128T, respectively.

図２に示すように、第１、第２ベーン溝１２８Ｓ、１２８Ｔの奥部には、第１、第２シリンダ１２１Ｓ、１２１Ｔの外周部から第１、第２ベーン溝１２８Ｓ、１２８Ｔに連通するように第１、第２スプリング穴１２４Ｓ、１２４Ｔが形成されている。第１、第２スプリング穴１２４Ｓ、１２４Ｔには、第１、第２ベーン１２７Ｓ、１２７Ｔの背面を押圧する第１、第２ベーンスプリング（図示せず）が挿入されている。 As shown in FIG. 2, the first and second vane grooves 128S and 128T are communicated with the first and second vane grooves 128S and 128T from the outer periphery of the first and second cylinders 121S and 121T at the back of the first and second vane grooves 128S and 128T. First and second spring holes 124S and 124T are formed. First and second vane springs (not shown) that press the back surfaces of the first and second vanes 127S and 127T are inserted into the first and second spring holes 124S and 124T.

ロータリ圧縮機１の起動時は、この第１、第２ベーンスプリングの反発力により、第１、第２ベーン１２７Ｓ、１２７Ｔが、第１、第２ベーン溝１２８Ｓ、１２８Ｔ内から第１、第２作動室１３０Ｓ、１３０Ｔ内に突出し、その先端が、第１、第２環状ピストン１２５Ｓ、１２５Ｔの外周面に当接し、第１、第２ベーン１２７Ｓ、１２７Ｔにより、第１、第２作動室１３０Ｓ、１３０Ｔが、第１、第２吸入室１３１Ｓ、１３１Ｔと、第１、第２圧縮室１３３Ｓ、１３３Ｔとに区画される。 When the rotary compressor 1 is started, the first and second vane 127S and 127T are moved from the inside of the first and second vane grooves 128S and 128T by the repulsive force of the first and second vane springs. The first and second working chambers 130S, 130T are protruded into the working chambers 130S, 130T, their tips abutting against the outer peripheral surfaces of the first and second annular pistons 125S, 125T, and the first and second vanes 127S, 127T. 130T is partitioned into first and second suction chambers 131S and 131T and first and second compression chambers 133S and 133T.

また、第１、第２シリンダ１２１Ｓ、１２１Ｔには、第１、第２ベーン溝１２８Ｓ、１２８Ｔの奥部と圧縮機筐体１０内とを、図１に示す開口部Ｒで連通して圧縮機筐体１０内の圧縮された冷媒ガスを導入し、第１、第２ベーン１２７Ｓ、１２７Ｔに、冷媒ガスの圧力により背圧をかける第１、第２圧力導入路１２９Ｓ、１２９Ｔが形成されている。 In addition, the first and second cylinders 121S and 121T communicate with the inner portions of the first and second vane grooves 128S and 128T and the interior of the compressor housing 10 through the opening R shown in FIG. First and second pressure introducing passages 129S and 129T are formed in which the compressed refrigerant gas in the housing 10 is introduced and back pressure is applied to the first and second vanes 127S and 127T by the pressure of the refrigerant gas. .

第１、第２シリンダ１２１Ｓ、１２１Ｔには、第１、第２吸入室１３１Ｓ、１３１Ｔに外部から冷媒を吸入するために、第１、第２吸入室１３１Ｓ、１３１Ｔと外部とを連通させる第１、第２吸入孔１３５Ｓ、１３５Ｔが設けられている。 In the first and second cylinders 121S and 121T, the first and second suction chambers 131S and 131T communicate with the outside in order to suck the refrigerant from the outside into the first and second suction chambers 131S and 131T. Second suction holes 135S and 135T are provided.

また、図１に示すように、第１シリンダ１２１Ｓと第２シリンダ１２１Ｔの間には、中間仕切板１４０が配置され、第１シリンダ１２１Ｓの第１作動室１３０Ｓ（図２参照）と第２シリンダ１２１Ｔの第２作動室１３０Ｔ（図２参照）とを区画、閉塞している。第１シリンダ１２１Ｓの下端部には、下端板１６０Ｓが配置され、第１シリンダ１２１Ｓの第１作動室１３０Ｓを閉塞している。また、第２シリンダ１２１Ｔの上端部には、上端板１６０Ｔが配置され、第２シリンダ１２１Ｔの第２作動室１３０Ｔを閉塞している。 Further, as shown in FIG. 1, an intermediate partition plate 140 is disposed between the first cylinder 121S and the second cylinder 121T, and the first working chamber 130S (see FIG. 2) of the first cylinder 121S and the second cylinder. The second working chamber 130T (see FIG. 2) of 121T is partitioned and closed. A lower end plate 160S is disposed at the lower end of the first cylinder 121S, and closes the first working chamber 130S of the first cylinder 121S. An upper end plate 160T is disposed at the upper end portion of the second cylinder 121T, and closes the second working chamber 130T of the second cylinder 121T.

下端板１６０Ｓには、副軸受部１６１Ｓが形成され、副軸受部１６１Ｓに、回転軸１５の副軸部１５１が回転自在に支持されている。上端板１６０Ｔには、主軸受部１６１Ｔが形成され、主軸受部１６１Ｔに、回転軸１５の主軸部１５３が回転自在に支持されている。 A sub-bearing portion 161S is formed on the lower end plate 160S, and the sub-shaft portion 151 of the rotary shaft 15 is rotatably supported by the sub-bearing portion 161S. A main bearing portion 161T is formed on the upper end plate 160T, and the main shaft portion 153 of the rotary shaft 15 is rotatably supported by the main bearing portion 161T.

回転軸１５は、互いに１８０°位相をずらして偏心させた第１偏心部１５２Ｓと第２偏心部１５２Ｔとを備え、第１偏心部１５２Ｓは、第１の圧縮部１２Ｓの第１環状ピストン１２５Ｓに回転自在に嵌合し、第２偏心部１５２Ｔは、第２の圧縮部１２Ｔの第２環状ピストン１２５Ｔに回転自在に嵌合している。 The rotating shaft 15 includes a first eccentric portion 152S and a second eccentric portion 152T that are eccentric with a phase difference of 180 ° from each other. The first eccentric portion 152S is connected to the first annular piston 125S of the first compression portion 12S. The second eccentric portion 152T is rotatably fitted to the second annular piston 125T of the second compression portion 12T.

回転軸１５が回転すると、第１、第２環状ピストン１２５Ｓ、１２５Ｔが、第１、第２シリンダ内壁１２３Ｓ、１２３Ｔに沿って第１、第２シリンダ１２１Ｓ、１２１Ｔ内を図２の反時計回りに公転し、これに追随して第１、第２ベーン１２７Ｓ、１２７Ｔが往復運動する。この第１、第２環状ピストン１２５Ｓ、１２５Ｔ及び第１、第２ベーン１２７Ｓ、１２７Ｔの運動により、第１、第２吸入室１３１Ｓ、１３１Ｔ及び第１、第２圧縮室１３３Ｓ、１３３Ｔの容積が連続的に変化し、圧縮部１２は、連続的に冷媒ガスを吸入し圧縮して吐出する。 When the rotary shaft 15 rotates, the first and second annular pistons 125S and 125T move in the first and second cylinders 121S and 121T counterclockwise in FIG. 2 along the first and second cylinder inner walls 123S and 123T. Revolving and following this, the first and second vanes 127S and 127T reciprocate. Due to the movement of the first and second annular pistons 125S and 125T and the first and second vanes 127S and 127T, the volumes of the first and second suction chambers 131S and 131T and the first and second compression chambers 133S and 133T are continuous. The compressor 12 continuously sucks, compresses and discharges the refrigerant gas.

図１に示すように、下端板１６０Ｓの下側には、下マフラーカバー１７０Ｓが配置され、下端板１６０Ｓとの間に下マフラー室１８０Ｓを形成している。そして、第１の圧縮部１２Ｓは、下マフラー室１８０Ｓに開口している。すなわち、下端板１６０Ｓの第１ベーン１２７Ｓ近傍には、第１シリンダ１２１Ｓの第１圧縮室１３３Ｓと下マフラー室１８０Ｓとを連通する第１吐出孔１９０Ｓ（図２参照）が設けられ、第１吐出孔１９０Ｓには、圧縮された冷媒ガスの逆流を防止するリード弁型の第１吐出弁２００Ｓが配置されている。 As shown in FIG. 1, a lower muffler cover 170S is arranged below the lower end plate 160S, and a lower muffler chamber 180S is formed between the lower end plate 160S and the lower muffler cover 170S. And the 1st compression part 12S is opened to lower muffler room 180S. That is, a first discharge hole 190S (see FIG. 2) that connects the first compression chamber 133S of the first cylinder 121S and the lower muffler chamber 180S is provided in the vicinity of the first vane 127S of the lower end plate 160S. In the hole 190S, a reed valve type first discharge valve 200S for preventing the backflow of the compressed refrigerant gas is disposed.

下マフラー室１８０Ｓは、環状に形成された１つの室であり、第１の圧縮部１２Ｓの吐出側を、下端板１６０Ｓ、第１シリンダ１２１Ｓ、中間仕切板１４０、第２シリンダ１２１Ｔ及び上端板１６０Ｔを貫通する冷媒通路１３６（図２参照）を通して上マフラー室１８０Ｔ内に連通させる連通路の一部である。下マフラー室１８０Ｓは、吐出冷媒ガスの圧力脈動を低減させる。また、第１吐出弁２００Ｓに重ねて、第１吐出弁２００Ｓの撓み開弁量を制限するための第１吐出弁押え２０１Ｓが、第１吐出弁２００Ｓとともにリベットにより固定されている。第１吐出孔１９０Ｓ、第１吐出弁２００Ｓ及び第１吐出弁押え２０１Ｓは、下端板１６０Ｓの第１吐出弁部を構成している。 The lower muffler chamber 180S is one chamber formed in an annular shape, and the lower end plate 160S, the first cylinder 121S, the intermediate partition plate 140, the second cylinder 121T, and the upper end plate 160T are arranged on the discharge side of the first compression unit 12S. This is a part of the communication passage that communicates with the upper muffler chamber 180T through the refrigerant passage 136 (see FIG. 2) that passes through the upper muffler chamber. The lower muffler chamber 180S reduces the pressure pulsation of the discharged refrigerant gas. In addition, a first discharge valve presser 201S for limiting the amount of deflection opening of the first discharge valve 200S is fixed to the first discharge valve 200S by a rivet together with the first discharge valve 200S. The first discharge hole 190S, the first discharge valve 200S, and the first discharge valve presser 201S constitute a first discharge valve portion of the lower end plate 160S.

図１に示すように、上端板１６０Ｔの上側には、上マフラーカバー１７０Ｔが配置され、上端板１６０Ｔとの間に上マフラー室１８０Ｔを形成している。上端板１６０Ｔの第２ベーン１２７Ｔ近傍には、第２シリンダ１２１Ｔの第２圧縮室１３３Ｔと上マフラー室１８０Ｔとを連通する第２吐出孔１９０Ｔ（図２参照）が設けられ、第２吐出孔１９０Ｔには、圧縮された冷媒ガスの逆流を防止するリード弁型の第２吐出弁２００Ｔが配置されている。また、第２吐出弁２００Ｔに重ねて、第２吐出弁２００Ｔの撓み開弁量を制限するための第２吐出弁押え２０１Ｔが、第２吐出弁２００Ｔとともにリベットにより固定されている。上マフラー室１８０Ｔは、吐出冷媒の圧力脈動を低減させる。第２吐出孔１９０Ｔ、第２吐出弁２００Ｔ及び第２吐出弁押え２０１Ｔは、上端板１６０Ｔの第２吐出弁部を構成している。第１、第２吐出弁押え２０１Ｓ、２０１Ｔの詳細については、後述する。 As shown in FIG. 1, an upper muffler cover 170T is arranged above the upper end plate 160T, and an upper muffler chamber 180T is formed between the upper end plate 160T and the upper muffler cover 170T. In the vicinity of the second vane 127T of the upper end plate 160T, a second discharge hole 190T (see FIG. 2) that communicates the second compression chamber 133T of the second cylinder 121T and the upper muffler chamber 180T is provided, and the second discharge hole 190T. Is provided with a reed valve type second discharge valve 200T for preventing the backflow of the compressed refrigerant gas. In addition, a second discharge valve presser 201T for limiting the deflection opening amount of the second discharge valve 200T is fixed to the second discharge valve 200T by a rivet together with the second discharge valve 200T. The upper muffler chamber 180T reduces the pressure pulsation of the discharged refrigerant. The second discharge hole 190T, the second discharge valve 200T, and the second discharge valve presser 201T constitute a second discharge valve portion of the upper end plate 160T. Details of the first and second discharge valve pressers 201S and 201T will be described later.

第１シリンダ１２１Ｓ、下端板１６０Ｓ、下マフラーカバー１７０Ｓ、第２シリンダ１２１Ｔ、上端板１６０Ｔ、上マフラーカバー１７０Ｔ及び中間仕切板１４０は、複数の通しボルト１７５等により一体に締結されている。通しボルト１７５等により一体に締結された圧縮部１２のうち、上端板１６０Ｔの外周部が、圧縮機筐体１０にスポット溶接により固着され、圧縮部１２を圧縮機筐体１０に固定している。 The first cylinder 121S, the lower end plate 160S, the lower muffler cover 170S, the second cylinder 121T, the upper end plate 160T, the upper muffler cover 170T, and the intermediate partition plate 140 are integrally fastened by a plurality of through bolts 175 and the like. Out of the compression portion 12 that is integrally fastened by a through bolt 175 or the like, the outer peripheral portion of the upper end plate 160T is fixed to the compressor housing 10 by spot welding, and the compression portion 12 is fixed to the compressor housing 10. .

円筒状の圧縮機筐体１０の外周壁には、軸方向に離間して下部から順に、第１、第２貫通孔１０１、１０２が、第１、第２吸入管１０４、１０５を通すために設けられている。また、圧縮機筐体１０の外側部には、独立した円筒状の密閉容器からなるアキュムレータ２５が、アキュムホルダー２５２及びアキュムバンド２５３により保持されている。 The first and second through holes 101 and 102 are passed through the outer peripheral wall of the cylindrical compressor housing 10 in order from the lower part in the axial direction so as to pass the first and second suction pipes 104 and 105. Is provided. In addition, an accumulator 25 formed of an independent cylindrical sealed container is held by an accumulator holder 252 and an accumulator band 253 on the outer side of the compressor housing 10.

アキュムレータ２５の天部中心には、冷凍サイクルの蒸発器に接続するシステム接続管２５５が接続され、アキュムレータ２５の底部に設けられた底部貫通孔２５７には、一端がアキュムレータ２５の内部上方まで延設され、他端が、第１、第２吸入管１０４、１０５の他端に接続される第１、第２低圧連絡管３１Ｓ、３１Ｔが接続されている。 A system connection tube 255 connected to the evaporator of the refrigeration cycle is connected to the center of the top of the accumulator 25, and one end of the bottom through hole 257 provided at the bottom of the accumulator 25 extends to the upper part inside the accumulator 25. The other ends of the first and second suction pipes 104 and 105 are connected to the first and second low-pressure communication pipes 31S and 31T.

冷凍サイクルの低圧冷媒をアキュムレータ２５を介して第１、第２の圧縮部１２Ｓ、１２Ｔに導く第１、第２低圧連絡管３１Ｓ、３１Ｔは、吸入部としての第１、第２吸入管１０４、１０５を介して第１、第２シリンダ１２１Ｓ、１２１Ｔの第１、第２吸入孔１３５Ｓ、１３５Ｔ（図２参照）に接続されている。すなわち、第１、第２吸入孔１３５Ｓ、１３５Ｔは、冷凍サイクルの蒸発器に並列に接続されている。 The first and second low-pressure connecting pipes 31S and 31T that guide the low-pressure refrigerant of the refrigeration cycle to the first and second compression parts 12S and 12T through the accumulator 25 are the first and second suction pipes 104, The first and second cylinders 121S and 121T are connected to the first and second suction holes 135S and 135T (see FIG. 2) via the 105. That is, the first and second suction holes 135S and 135T are connected in parallel to the evaporator of the refrigeration cycle.

圧縮機筐体１０の天部には、冷凍サイクルと接続し高圧冷媒ガスを冷凍サイクルの凝縮器側に吐出する吐出部としての吐出管１０７が接続されている。すなわち、第１、第２吐出孔１９０Ｓ、１９０Ｔは、冷凍サイクルの凝縮器に接続されている。 Connected to the top of the compressor housing 10 is a discharge pipe 107 that is connected to the refrigeration cycle and discharges high-pressure refrigerant gas to the condenser side of the refrigeration cycle. That is, the first and second discharge holes 190S and 190T are connected to the condenser of the refrigeration cycle.

圧縮機筐体１０内には、およそ第２シリンダ１２１Ｔの高さまで潤滑油が封入されている。また、潤滑油は、回転軸１５の下部に挿入された羽根ポンプ（図示せず）により、回転軸１５の下端部に取付けられた給油パイプ１６から吸上げられ、圧縮部１２を循環し、摺動部品の潤滑を行なうと共に、圧縮部１２の微小隙間のシールをしている。 Lubricating oil is sealed in the compressor housing 10 up to the height of the second cylinder 121T. Further, the lubricating oil is sucked up from the oil supply pipe 16 attached to the lower end portion of the rotating shaft 15 by a blade pump (not shown) inserted in the lower portion of the rotating shaft 15, circulates through the compressing portion 12, and slides. The moving parts are lubricated and a minute gap in the compression portion 12 is sealed.

次に、図３を参照して実施例のロータリ圧縮機１の特徴的な構成である第１、第２吐出弁押えについて説明する。図３は、実施例１の第１、第２吐出弁押えを示す平面図である。図３に示すように、実施例１の第１、第２吐出弁押え２０１Ｓ、２０１Ｔは、平面視で角のとれた長方形に形成され、反吐出孔側に第１、第２リベット孔２０１Ｓａ、２０１Ｔａが設けられ、吐出孔側に第１、第２冷媒ガス抜き孔２０１Ｓｂ、２０１Ｔｂが設けられ、図３の紙面の裏側から表側に向かって反っている。 Next, the first and second discharge valve pressers, which are characteristic configurations of the rotary compressor 1 of the embodiment, will be described with reference to FIG. FIG. 3 is a plan view showing the first and second discharge valve holders according to the first embodiment. As shown in FIG. 3, the first and second discharge valve holders 201S and 201T of the first embodiment are formed in a rectangular shape with a corner in plan view, and the first and second rivet holes 201Sa, 201Ta is provided, and the first and second refrigerant gas vent holes 201Sb and 201Tb are provided on the discharge hole side, and are warped from the back side to the front side in FIG.

第１、第２冷媒ガス抜き孔２０１Ｓｂ、２０１Ｔｂは、第１、第２吐出弁２００Ｓ、２００Ｔ（図１参照）が開閉するとき、第１、第２吐出弁２００Ｓ、２００Ｔと第１、第２吐出弁押え２０１Ｓ、２０１Ｔとの間に滞留している冷媒ガスを逃したり、第１、第２吐出弁押え２０１Ｓ、２０１Ｔとの間に冷媒ガスを供給したりして、第１、第２吐出弁２００Ｓ、２００Ｔの弁開閉抵抗を減らすためのものである。 The first and second refrigerant gas vent holes 201Sb and 201Tb are connected to the first and second discharge valves 200S and 200T when the first and second discharge valves 200S and 200T (see FIG. 1) are opened and closed. The refrigerant gas staying between the discharge valve holders 201S and 201T is released, or the refrigerant gas is supplied between the first and second discharge valve holders 201S and 201T, so that the first and second discharges are performed. This is to reduce the valve opening / closing resistance of the valves 200S and 200T.

第１、第２リベット孔２０１Ｓａ、２０１Ｔａの近傍の吐出孔側には、肉抜き部としての矩形の穴２０１Ｓｃ、２０１Ｔｃが設けられ、反吐出孔側には、肉抜き部としての矩形の切欠き２０１Ｓｄ、２０１Ｔｄが設けられている。穴２０１Ｓｃ、２０１Ｔｃ及び切欠き２０１Ｓｄ、２０１Ｔｄは、第１、第２吐出弁押え２０１Ｓ、２０１Ｔの厚さ方向に貫通する貫通孔としてもよいし、厚さ方向に有底の穴としてもよい。 Rectangular holes 201Sc and 201Tc are provided as thinning portions on the discharge hole side near the first and second rivet holes 201Sa and 201Ta, and rectangular notches as thinning portions are provided on the counter discharge hole side. 201Sd and 201Td are provided. The holes 201Sc and 201Tc and the notches 201Sd and 201Td may be through-holes penetrating in the thickness direction of the first and second discharge valve pressers 201S and 201T, or may be bottomed holes in the thickness direction.

第１、第２溝部１６３Ｓ、１６３Ｔ（図８参照）に、第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁押え２０１Ｓ、２０１Ｔを重ねて挿入し、第１、第２リベット２０３Ｓ、２０３Ｔ（図８参照）を、第１、第２リベット孔２０１Ｓａ、２０１Ｔａに挿通してカシメると、第１、第２リベット２０３Ｓ、２０３Ｔの軸部が圧縮されて軸端部が潰れると共に軸部の上部の径が増大するが、第１、第２リベット孔２０１Ｓａ、２０１Ｔａと穴２０１Ｓｃ、２０１Ｔｃ及び切欠き２０１Ｓｄ、２０１Ｔｄとの間の壁部が薄く変形し易いので、第１、第２リベット２０３Ｓ、２０３Ｔの軸部は、穴２０１Ｓｃ、２０１Ｔｃ及び切欠き２０１Ｓｄ、２０１Ｔｄの方向に径が増大して楕円形に変形し、第１、第２吐出弁押え２０１Ｓ、２０１Ｔが幅方向に膨張して第１、第２溝部１６３Ｓ、１６３Ｔの内壁を押圧することはない。従って、下、上端板１６０Ｓ、１６０Ｔが歪んでシリンダ当接面の平面度が悪化し、下、上端板１６０Ｓ、１６０Ｔのシリンダ当接面と第１、第２シリンダ１２１Ｓ、１２１Ｔとの密着性、気密性が低下することはない。 The first and second discharge valves 200S and 200T and the first and second discharge valve pressers 201S and 201T are inserted into the first and second groove portions 163S and 163T (see FIG. 8), and the first and second rivets are inserted. When 203S and 203T (see FIG. 8) are inserted into the first and second rivet holes 201Sa and 201Ta and crimped, the shaft portions of the first and second rivets 203S and 203T are compressed and the shaft end portions are crushed. Although the diameter of the upper part of the shaft portion is increased, the wall portions between the first and second rivet holes 201Sa and 201Ta and the holes 201Sc and 201Tc and the notches 201Sd and 201Td are easily deformed thinly. The shaft portions of the rivets 203S and 203T are increased in diameter in the direction of the holes 201Sc and 201Tc and the notches 201Sd and 201Td, and are deformed into an elliptical shape. The first and second discharge valve pressers 201S and 201 There first expands in the width direction, the second groove 163S, not pressing the inner wall of 163t. Accordingly, the lower and upper end plates 160S and 160T are distorted and the flatness of the cylinder contact surface is deteriorated, and the adhesion between the cylinder contact surfaces of the lower and upper end plates 160S and 160T and the first and second cylinders 121S and 121T, Airtightness is not reduced.

図４は、実施例２の第１、第２吐出弁押えを示す平面図である。図４に示すように、実施例２の第１、第２吐出弁押え３０１Ｓ、３０１Ｔの第１、第２リベット孔２０１Ｓａ、２０１Ｔａの近傍の吐出孔側及び反吐出孔側には、肉抜き部としての円弧形の穴３０１Ｓｃ、３０１Ｔｃが設けられている。穴３０１Ｓｃ、３０１Ｔｃは、第１、第２吐出弁押え３０１Ｓ、３０１Ｔの厚さ方向に貫通する貫通孔としてもよいし、厚さ方向に有底の穴としてもよい。 FIG. 4 is a plan view showing first and second discharge valve pressers according to the second embodiment. As shown in FIG. 4, the first and second discharge valve pressers 301S and 301T according to the second embodiment have a thinned portion on the discharge hole side and the counter discharge hole side in the vicinity of the first and second rivet holes 201Sa and 201Ta. Arc-shaped holes 301Sc and 301Tc are provided. The holes 301Sc and 301Tc may be through-holes penetrating in the thickness direction of the first and second discharge valve holders 301S and 301T, or may be bottomed holes in the thickness direction.

第１、第２溝部１６３Ｓ、１６３Ｔ（図８参照）に、第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁押え３０１Ｓ、３０１Ｔを重ねて挿入し、第１、第２リベット２０３Ｓ、２０３Ｔ（図８参照）を、第１、第２リベット孔２０１Ｓａ、２０１Ｔａに挿通してカシメると、第１、第２リベット２０３Ｓ、２０３Ｔの軸部が圧縮されて軸端部が潰れると共に軸部の上部の径が増大するが、第１、第２リベット孔２０１Ｓａ、２０１Ｔａと穴３０１Ｓｃ、３０１Ｔｃとの間の壁部が薄く変形し易いので、第１、第２リベット２０３Ｓ、２０３Ｔの軸部は、穴３０１Ｓｃ、３０１Ｔｃの方向に径が増大して楕円形に変形し、第１、第２吐出弁押え３０１Ｓ、３０１Ｔが幅方向に膨張して第１、第２溝部１６３Ｓ、１６３Ｔの内壁を押圧することはない。 The first and second discharge valves 200S and 200T and the first and second discharge valve pressers 301S and 301T are inserted into the first and second groove portions 163S and 163T (see FIG. 8), and the first and second rivets are inserted. When 203S and 203T (see FIG. 8) are inserted into the first and second rivet holes 201Sa and 201Ta and crimped, the shaft portions of the first and second rivets 203S and 203T are compressed and the shaft end portions are crushed. Although the diameter of the upper portion of the shaft portion increases, the wall portion between the first and second rivet holes 201Sa and 201Ta and the holes 301Sc and 301Tc is thin and easily deformed, so the shafts of the first and second rivets 203S and 203T The portion increases in diameter in the direction of the holes 301Sc and 301Tc and deforms into an oval shape, and the first and second discharge valve holders 301S and 301T expand in the width direction to form inner walls of the first and second groove portions 163S and 163T. Press Rukoto is not.

図５は、実施例３の第１、第２吐出弁押えを示す平面図である。図５に示すように、実施例３の第１、第２吐出弁押え４０１Ｓ、４０１Ｔの第１、第２リベット孔２０１Ｓａ、２０１Ｔａの近傍の吐出孔側及び反吐出孔側には、肉抜き部としての円形の穴４０１Ｓｃ、４０１Ｔｃが設けられている。穴４０１Ｓｃ、４０１Ｔｃは、第１、第２吐出弁押え４０１Ｓ、４０１Ｔの厚さ方向に貫通する貫通孔としてもよいし、厚さ方向に有底の穴としてもよい。 FIG. 5 is a plan view showing first and second discharge valve pressers according to the third embodiment. As shown in FIG. 5, the first and second discharge valve retainers 401S and 401T of the third embodiment have a lightening portion on the discharge hole side and the counter discharge hole side in the vicinity of the first and second rivet holes 201Sa and 201Ta. Are provided with circular holes 401Sc and 401Tc. The holes 401Sc and 401Tc may be through holes penetrating in the thickness direction of the first and second discharge valve holders 401S and 401T, or may be bottomed holes in the thickness direction.

第１、第２溝部１６３Ｓ、１６３Ｔ（図８参照）に、第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁押え４０１Ｓ、４０１Ｔを重ねて挿入し、第１、第２リベット２０３Ｓ、２０３Ｔ（図８参照）を、第１、第２リベット孔２０１Ｓａ、２０１Ｔａに挿通してカシメると、第１、第２リベット２０３Ｓ、２０３Ｔの軸部が圧縮されて軸端部が潰れると共に軸部の上部の径が増大するが、第１、第２リベット孔２０１Ｓａ、２０１Ｔａと穴４０１Ｓｃ、４０１Ｔｃとの間の壁部が薄く変形し易いので、第１、第２リベット２０３Ｓ、２０３Ｔの軸部は、穴４０１Ｓｃ、４０１Ｔｃの方向に径が増大して楕円形に変形し、第１、第２吐出弁押え４０１Ｓ、４０１Ｔが幅方向に膨張して第１、第２溝部１６３Ｓ、１６３Ｔの内壁を押圧することはない。 The first and second discharge valves 200S and 200T and the first and second discharge valve pressers 401S and 401T are inserted into the first and second groove portions 163S and 163T (see FIG. 8), and the first and second rivets are inserted. When 203S and 203T (see FIG. 8) are inserted into the first and second rivet holes 201Sa and 201Ta and crimped, the shaft portions of the first and second rivets 203S and 203T are compressed and the shaft end portions are crushed. Although the diameter of the upper portion of the shaft portion increases, the wall portion between the first and second rivet holes 201Sa and 201Ta and the holes 401Sc and 401Tc is thin and easily deformed, so the shaft of the first and second rivets 203S and 203T The portion increases in diameter in the direction of the holes 401Sc and 401Tc and deforms into an elliptical shape, and the first and second discharge valve holders 401S and 401T expand in the width direction, and the inner walls of the first and second groove portions 163S and 163T Press Rukoto is not.

図６は、実施例４の第１、第２吐出弁押えを示す平面図である。図６に示すように、実施例４の第１、第２吐出弁押え５０１Ｓ、５０１Ｔの第１、第２リベット孔２０１Ｓａ、２０１Ｔａの近傍の周囲には、肉抜き部として複数の円形の小穴５０１Ｓｃ、５０１Ｔｃが等間隔に設けられている。穴５０１Ｓｃ、５０１Ｔｃは、第１、第２吐出弁押え５０１Ｓ、５０１Ｔの厚さ方向に貫通する貫通孔としてもよいし、厚さ方向に有底の穴としてもよい。 FIG. 6 is a plan view showing first and second discharge valve pressers according to the fourth embodiment. As shown in FIG. 6, a plurality of circular small holes 501 Sc are formed around the vicinity of the first and second rivet holes 201 Sa and 201 Ta of the first and second discharge valve pressers 501 S and 501 T of the fourth embodiment as a thinned portion. , 501Tc are provided at equal intervals. The holes 501Sc and 501Tc may be through holes penetrating in the thickness direction of the first and second discharge valve holders 501S and 501T, or may be bottomed holes in the thickness direction.

第１、第２溝部１６３Ｓ、１６３Ｔ（図８参照）に、第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁押え５０１Ｓ、５０１Ｔを重ねて挿入し、第１、第２リベット２０３Ｓ、２０３Ｔ（図８参照）を、第１、第２リベット孔２０１Ｓａ、２０１Ｔａに挿通してカシメると、第１、第２リベット２０３Ｓ、２０３Ｔの軸部が圧縮されて軸端部が潰れると共に軸部の上部の径が増大するが、第１、第２リベット孔２０１Ｓａ、２０１Ｔａと穴５０１Ｓｃ、５０１Ｔｃとの間の壁部が薄く変形し易いので、第１、第２リベット２０３Ｓ、２０３Ｔの軸部の径が増大すると、穴５０１Ｓｃ、５０１Ｔｃが潰れ、第１、第２吐出弁押え５０１Ｓ、５０１Ｔが幅方向に膨張して第１、第２溝部１６３Ｓ、１６３Ｔの内壁を押圧することはない。 The first and second discharge valves 200S and 200T and the first and second discharge valve pressers 501S and 501T are inserted into the first and second groove portions 163S and 163T (see FIG. 8), and the first and second rivets are inserted. When 203S and 203T (see FIG. 8) are inserted into the first and second rivet holes 201Sa and 201Ta and crimped, the shaft portions of the first and second rivets 203S and 203T are compressed and the shaft end portions are crushed. Although the diameter of the upper portion of the shaft portion increases, the wall portion between the first and second rivet holes 201Sa and 201Ta and the holes 501Sc and 501Tc is thin and easily deformed, so the shafts of the first and second rivets 203S and 203T When the diameter of the portion increases, the holes 501Sc and 501Tc are not crushed, and the first and second discharge valve retainers 501S and 501T do not expand in the width direction and press the inner walls of the first and second groove portions 163S and 163T.

図７は、実施例５の第１、第２吐出弁押えを示す平面図である。図７に示すように、実施例５の第１、第２吐出弁押え６０１Ｓ、６０１Ｔの第１、第２リベット孔２０１Ｓａ、２０１Ｔａの近傍の両側部には、肉抜き部としての半円形の切欠き６０１Ｓｄ、６０１Ｔｄが設けられている。切欠き６０１Ｓｄ、６０１Ｔｄは、第１、第２吐出弁押え６０１Ｓ、６０１Ｔの厚さ方向全域に設けてもよいし、厚さ方向一部域のみに設けてもよい。 FIG. 7 is a plan view showing first and second discharge valve holders according to the fifth embodiment. As shown in FIG. 7, the first and second discharge valve retainers 601S and 601T of the fifth embodiment have semicircular cuts as thinning portions on both sides in the vicinity of the first and second rivet holes 201Sa and 201Ta. Notches 601Sd and 601Td are provided. The notches 601Sd and 601Td may be provided in the entire thickness direction of the first and second discharge valve pressers 601S and 601T, or may be provided only in a partial region in the thickness direction.

第１、第２溝部１６３Ｓ、１６３Ｔ（図８参照）に、第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁押え６０１Ｓ、６０１Ｔを重ねて挿入し、第１、第２リベット２０３Ｓ、２０３Ｔ（図８参照）を、第１、第２リベット孔２０１Ｓａ、２０１Ｔａに挿通してカシメると、第１、第２リベット２０３Ｓ、２０３Ｔの軸部が圧縮されて軸端部が潰れると共に軸部の上部の径が増大するが、軸部の径の増大により第１、第２吐出弁押え６０１Ｓ、６０１Ｔが幅方向に膨張しても、両側部には、肉抜き部としての半円形の切欠き６０１Ｓｄ、６０１Ｔｄが設けられて幅が狭くなっているので、第１、第２溝部１６３Ｓ、１６３Ｔの内壁を押圧することはない。 The first and second discharge valves 200S and 200T and the first and second discharge valve pressers 601S and 601T are inserted into the first and second groove portions 163S and 163T (see FIG. 8), and the first and second rivets are inserted. When 203S and 203T (see FIG. 8) are inserted into the first and second rivet holes 201Sa and 201Ta and crimped, the shaft portions of the first and second rivets 203S and 203T are compressed and the shaft end portions are crushed. Although the diameter of the upper portion of the shaft portion increases, even if the first and second discharge valve retainers 601S and 601T expand in the width direction due to the increase in the diameter of the shaft portion, both sides are semicircular as a thinned portion. Since the notches 601Sd and 601Td are provided and have a narrow width, the inner walls of the first and second groove portions 163S and 163T are not pressed.

以上説明した、実施例１〜５の吐出弁部の構成によれば、吐出弁押えのリベット孔の近傍に、肉抜き部を設けたので、リベットをカシメて軸部が圧縮されて軸端部が潰れると共に軸部の上部の径が増大しても、吐出弁押えが幅方向に膨張して端板の溝部の内壁を押圧することはない。従って、端板が歪んで平面度が悪化し、端板とシリンダとの密着性、気密性が低下することはない。 According to the configuration of the discharge valve portion of the first to fifth embodiments described above, since the lightening portion is provided in the vicinity of the rivet hole of the discharge valve presser, the shaft portion is compressed by crimping the rivet and the shaft end portion. Even if the diameter of the upper portion of the shaft portion increases as the material is crushed, the discharge valve presser does not expand in the width direction and does not press the inner wall of the groove portion of the end plate. Therefore, the end plate is distorted and the flatness is deteriorated, and the adhesion and airtightness between the end plate and the cylinder are not lowered.

以上、本発明の実施例として、第１、第２の圧縮部１２Ｓ、１２Ｔを備えるツインロータリ圧縮機について説明したが、本発明は、圧縮部が１つのシングルロータリ圧縮機、第１の圧縮部の吐出冷媒を第２の圧縮部でさらに圧縮する２段圧縮ロータリ圧縮機などにも適用することができる。 As described above, the twin rotary compressor including the first and second compression units 12S and 12T has been described as an embodiment of the present invention. However, the present invention is a single rotary compressor having a single compression unit and the first compression unit. This can also be applied to a two-stage compression rotary compressor that further compresses the discharged refrigerant in the second compression section.

１ロータリ圧縮機
１０圧縮機筐体
１１モータ
１２圧縮部
１５回転軸
１６給油パイプ
２５アキュムレータ
３１Ｓ第１低圧連絡管（低圧連絡管）
３１Ｔ第２低圧連絡管（低圧連絡管）
１０１第１貫通孔（貫通孔）
１０２第２貫通孔（貫通孔）
１０４第１吸入管（吸入管、吸入部）
１０５第２吸入管（吸入管、吸入部）
１０７吐出管（吐出部）
１１１ステータ
１１２ロータ
１２Ｓ第１の圧縮部（圧縮部）
１２Ｔ第２の圧縮部（圧縮部）
１２１Ｓ第１シリンダ（シリンダ）
１２１Ｔ第２シリンダ（シリンダ）
１２２Ｓ第１側方張出部（側方張出部）
１２２Ｔ第２側方張出部（側方張出部）
１２３Ｓ第１シリンダ内壁（シリンダ内壁）
１２３Ｔ第２シリンダ内壁（シリンダ内壁）
１２４Ｓ第１スプリング穴（スプリング穴）
１２４Ｔ第２スプリング穴（スプリング穴）
１２５Ｓ第１環状ピストン（環状ピストン）
１２５Ｔ第２環状ピストン（環状ピストン）
１２７Ｓ第１ベーン（ベーン）
１２７Ｔ第２ベーン（ベーン）
１２８Ｓ第１ベーン溝（ベーン溝）
１２８Ｔ第２ベーン溝（ベーン溝）
１２９Ｓ第１圧力導入路（圧力導入路）
１２９Ｔ第２圧力導入路（圧力導入路）
１３０Ｓ第１作動室（作動室）
１３０Ｔ第２作動室（作動室）
１３１Ｓ第１吸入室（吸入室）
１３１Ｔ第２吸入室（吸入室）
１３３Ｓ第１圧縮室（圧縮室）
１３３Ｔ第２圧縮室（圧縮室）
１３５Ｓ第１吸入孔（吸入孔）
１３５Ｔ第２吸入孔（吸入孔）
１３６冷媒通路
１４０中間仕切板
１５１副軸部
１５２Ｓ第１偏心部（偏心部）
１５２Ｔ第２偏心部（偏心部）
１５３主軸部
１６０Ｓ下端板（端板）
１６０Ｔ上端板（端板）
１６１Ｓ副軸受部（軸受部）
１６１Ｔ主軸受部（軸受部）
１６３Ｓ第１溝部（溝部）
１６３Ｔ第２溝部（溝部）
１６３Ｓｂ第１吐出孔側拡径部（吐出孔側拡径部）
１６３Ｔｂ第２吐出孔側拡径部（吐出孔側拡径部）
１７０Ｓ下マフラーカバー（マフラーカバー）
１７０Ｔ上マフラーカバー（マフラーカバー）
１７５通しボルト
１８０Ｓ下マフラー室（マフラー室）
１８０Ｔ上マフラー室（マフラー室）
１９０Ｓ第１吐出孔（吐出孔）
１９０Ｔ第２吐出孔（吐出孔）
２００Ｓ第１吐出弁（吐出弁）
２００Ｔ第２吐出弁（吐出弁）
２０１Ｓ、３０１Ｓ、４０１Ｓ、５０１Ｓ、６０１Ｓ、９０１Ｓ第１吐出弁押え（吐出弁押え）
２０１Ｔ、３０１Ｔ、４０１Ｔ、５０１Ｔ、６０１Ｔ、９０１Ｔ第２吐出弁押え（吐出弁押え）
２０１Ｓａ第１リベット孔（リベット孔）
２０１Ｔａ第２リベット孔（リベット孔）
２０１Ｓｂ第１冷媒ガス抜き孔（冷媒ガス抜き孔）
２０１Ｔｂ第２冷媒ガス抜き孔（冷媒ガス抜き孔）
２０１Ｓｃ、３０１Ｓｃ、４０１Ｓｃ、５０１Ｓｃ穴（肉抜き部）
２０１Ｔｃ、３０１Ｔｃ、４０１Ｔｃ、５０１Ｔｃ穴（肉抜き部）
２０１Ｓｄ、６０１Ｓｄ切欠き（肉抜き部）
２０１Ｔｄ、６０１Ｔｄ切欠き（肉抜き部）
２０３Ｓ第１リベット（リベット）
２０３Ｔ第２リベット（リベット）
２５２アキュムホルダー
２５３アキュムバンド
２５５システム接続管
２５７底部貫通孔
Ｒ第１、第２圧力導入路の開口部
DESCRIPTION OF SYMBOLS 1 Rotary compressor 10 Compressor housing | casing 11 Motor 12 Compression part 15 Rotating shaft 16 Oil supply pipe 25 Accumulator 31S 1st low-pressure connection pipe (low-pressure connection pipe)
31T Second low pressure connection pipe (low pressure connection pipe)
101 First through hole (through hole)
102 Second through hole (through hole)
104 1st suction pipe (suction pipe, suction part)
105 Second suction pipe (suction pipe, suction part)
107 Discharge pipe (discharge section)
111 Stator 112 Rotor 12S 1st compression part (compression part)
12T 2nd compression part (compression part)
121S 1st cylinder (cylinder)
121T 2nd cylinder (cylinder)
122S first lateral overhang (side overhang)
122T Second lateral overhang (side overhang)
123S 1st cylinder inner wall (cylinder inner wall)
123T 2nd cylinder inner wall (cylinder inner wall)
124S 1st spring hole (spring hole)
124T Second spring hole (spring hole)
125S first annular piston (annular piston)
125T second annular piston (annular piston)
127S 1st vane (vane)
127T 2nd vane (vane)
128S 1st vane groove (vane groove)
128T 2nd vane groove (vane groove)
129S First pressure introduction path (pressure introduction path)
129T Second pressure introduction path (pressure introduction path)
130S 1st working chamber (working chamber)
130T second working chamber (working chamber)
131S First suction chamber (suction chamber)
131T Second suction chamber (suction chamber)
133S 1st compression chamber (compression chamber)
133T Second compression chamber (compression chamber)
135S 1st suction hole (suction hole)
135T 2nd suction hole (suction hole)
136 Refrigerant passage 140 Intermediate partition plate 151 Secondary shaft portion 152S First eccentric portion (eccentric portion)
152T second eccentric part (eccentric part)
153 Main shaft portion 160S Lower end plate (end plate)
160T Top plate (end plate)
161S Sub bearing part (bearing part)
161T Main bearing (bearing)
163S 1st groove part (groove part)
163T second groove (groove)
163Sb first discharge hole side enlarged portion (discharge hole side enlarged portion)
163Tb second discharge hole side enlarged portion (discharge hole side enlarged portion)
170S Lower muffler cover (muffler cover)
170T Upper muffler cover (muffler cover)
175 Through bolt 180S Lower muffler chamber (muffler chamber)
180T Upper muffler room (muffler room)
190S 1st discharge hole (discharge hole)
190T Second discharge hole (discharge hole)
200S 1st discharge valve (discharge valve)
200T Second discharge valve (discharge valve)
201S, 301S, 401S, 501S, 601S, 901S First discharge valve presser (discharge valve presser)
201T, 301T, 401T, 501T, 601T, 901T Second discharge valve presser (discharge valve presser)
201Sa 1st rivet hole (rivet hole)
201Ta 2nd rivet hole (rivet hole)
201Sb first refrigerant gas vent hole (refrigerant gas vent hole)
201Tb Second refrigerant gas vent hole (refrigerant gas vent hole)
201Sc, 301Sc, 401Sc, 501Sc Hole (thickening part)
201Tc, 301Tc, 401Tc, 501Tc Hole (thickening part)
201Sd, 601Sd Notch (Meat extraction part)
201Td, 601Td Notch (Meat extraction part)
203S 1st rivet (rivet)
203T 2nd rivet (rivet)
252 Accum holder 253 Accum band 255 System connection pipe 257 Bottom through-hole R Opening of first and second pressure introduction passages

Claims

A vertically mounted compressor housing which is provided with a refrigerant discharge part at the top and a refrigerant suction part at the bottom side and is sealed;
An annular cylinder, an end plate that has a bearing portion and a discharge valve portion and closes an end portion of the cylinder, and an eccentric portion of a rotating shaft supported by the bearing portion, which is disposed at a lower portion of the compressor housing An annular piston that revolves along the cylinder inner wall of the cylinder and forms a working chamber between the cylinder inner wall and the annular piston that projects from the vane groove of the cylinder into the working chamber. And a vane that divides the working chamber into a suction chamber and a compression chamber, sucks the refrigerant through the suction portion, and discharges the refrigerant from the discharge portion through the compressor housing,
A motor that is disposed at the top of the compressor housing and drives the compression unit via the rotating shaft;
A rotary compressor comprising:
In the vicinity of the rivet hole of the discharge valve presser constituting the discharge valve portion, a lightening portion is provided,
2. The rotary compressor according to claim 1, wherein the lightening portion includes a rectangular hole provided on the discharge hole side of the rivet hole and a rectangular notch provided on the counter discharge hole side.

A vertically mounted compressor housing which is provided with a refrigerant discharge part at the top and a refrigerant suction part at the bottom side and is sealed;
An annular cylinder, an end plate that has a bearing portion and a discharge valve portion and closes an end portion of the cylinder, and an eccentric portion of a rotating shaft supported by the bearing portion, which is disposed at a lower portion of the compressor housing An annular piston that revolves along the cylinder inner wall of the cylinder and forms a working chamber between the cylinder inner wall and the annular piston that projects from the vane groove of the cylinder into the working chamber. And a vane that divides the working chamber into a suction chamber and a compression chamber, sucks the refrigerant through the suction portion, and discharges the refrigerant from the discharge portion through the compressor housing,
A motor that is disposed at the top of the compressor housing and drives the compression unit via the rotating shaft;
A rotary compressor comprising:
In the vicinity of the rivet hole of the discharge valve presser constituting the discharge valve portion, a lightening portion is provided,
2. The rotary compressor according to claim 1, wherein the lightening portion includes arc-shaped holes provided on the discharge hole side and the counter discharge hole side of the rivet hole.

A vertically mounted compressor housing which is provided with a refrigerant discharge part at the top and a refrigerant suction part at the bottom side and is sealed;
An annular cylinder, an end plate that has a bearing portion and a discharge valve portion and closes an end portion of the cylinder, and an eccentric portion of a rotating shaft supported by the bearing portion, which is disposed at a lower portion of the compressor housing An annular piston that revolves along the cylinder inner wall of the cylinder and forms a working chamber between the cylinder inner wall and the annular piston that projects from the vane groove of the cylinder into the working chamber. And a vane that divides the working chamber into a suction chamber and a compression chamber, sucks the refrigerant through the suction portion, and discharges the refrigerant from the discharge portion through the compressor housing,
A motor that is disposed at the top of the compressor housing and drives the compression unit via the rotating shaft;
A rotary compressor comprising:
In the vicinity of the rivet hole of the discharge valve presser constituting the discharge valve portion, a lightening portion is provided,
2. The rotary compressor according to claim 1, wherein the lightening portion includes semicircular notches provided on both side portions of the discharge valve presser facing the rivet hole.