JP6135188B2

JP6135188B2 - Rotary compressor

Info

Publication number: JP6135188B2
Application number: JP2013039428A
Authority: JP
Inventors: 泰幸泉; 上田　健史; 健史上田
Original assignee: Fujitsu General Ltd
Current assignee: Fujitsu General Ltd
Priority date: 2013-02-28
Filing date: 2013-02-28
Publication date: 2017-05-31
Anticipated expiration: 2033-02-28
Also published as: JP2014167282A

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、ロータリ圧縮機の圧縮部１２（図１参照）の下端板１６０Ｓ及び上端板１６０Ｔには、図９及び図１０に示す第１、第２溝部５６３Ｓ、５６３Ｔが形成され、図７〜図１０に示すように、第１、第２溝部５６３Ｓ、５６３Ｔ内には、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５００Ｓ、５００Ｔ及び第１、第２吐出弁５００Ｓ、５００Ｔの撓み開弁量を制限するための第１、第２吐出弁押さえ５０１Ｓ、５０１Ｔが、第１、第２リベット２０３Ｓ、２０３Ｔにより取付けられている。第１、第２溝部５６３Ｓ、５６３Ｔ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５６３Ｓｂ、５６３Ｔｂが形成されている。 Conventionally, the first and second groove portions 563S and 563T shown in FIGS. 9 and 10 are formed on the lower end plate 160S and the upper end plate 160T of the compression portion 12 (see FIG. 1) of the rotary compressor, as shown in FIGS. As shown in FIG. 1, in the first and second groove portions 563S and 563T, the first and second discharge valves 500S and 500T and the first and second discharge valves of the reed valve type for opening and closing the first and second discharge holes 190S and 190T are provided. First and second discharge valve retainers 501S and 501T for restricting the amount of deflection opening of the two discharge valves 500S and 500T are attached by first and second rivets 203S and 203T. The first and second discharge holes 190S and 190T side of the first and second groove parts 563S and 563T are enlarged in diameter (width) to form first and second discharge hole side enlarged parts 563Sb and 563Tb. .

図１０に示すように、第１、第２吐出弁５００Ｓ、５００Ｔ及び第１、第２吐出弁押さえ５０１Ｓ、５０１Ｔは、第１、第２溝部５６３Ｓ、５６３Ｔの底部に設けられた第１、第２リベット孔１９１Ｓ、１９１Ｔ、第１、第２吐出弁５００Ｓ、５００Ｔの第１、第２リベット孔５００Ｓｄ、５００Ｔｄ及び第１、第２吐出弁押さえ５０１Ｓ、５０１Ｔの第１、第２リベット孔５０１Ｓｄ、５０１Ｔｄを通した第１、第２リベット２０３Ｓ、２０３Ｔにより、第１、第２溝部５６３Ｓ、５６３Ｔ内に組付けられている。 As shown in FIG. 10, the first and second discharge valves 500S and 500T and the first and second discharge valve retainers 501S and 501T are provided at the bottoms of the first and second grooves 563S and 563T, respectively. Two rivet holes 191S, 191T, first and second discharge valve 500S, 500T first and second rivet holes 500Sd, 500Td and first and second discharge valve retainers 501S, 501T first and second rivet holes 501Sd, The first and second grooves 563S and 563T are assembled by the first and second rivets 203S and 203T that pass through 501Td.

第１、第２吐出孔側拡径部５６３Ｓｂ、５６３Ｔｂの径（幅）が拡大されて第１、第２吐出孔側拡径部５６３Ｓｂ、５６３Ｔｂが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５００Ｓ、５００Ｔ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 discharge hole side enlarged portions 563Sb and 563Tb are enlarged to form the first and second discharge hole side enlarged portions 563Sb and 563Tb. This is to secure a flow path for the compressed refrigerant gas that is discharged from the discharge holes 190S and 190T and is ejected by pushing the first and second discharge valves 500S and 500T open.

第１、第２吐出弁５００Ｓ、５００Ｔは、ばね鋼のロール鋼板からプレス打抜き加工により製造されるため、ロールの外側である第１、第２吐出弁５００Ｓ、５００Ｔの表面は、ロールの巻癖により、僅かに凸面となっている。そのため、第１、第２吐出弁５００Ｓ、５００Ｔの表面が、第１、第２吐出孔１９０Ｓ、１９０Ｔの第１、第２弁座１９０Ｓａ、１９０Ｔａと当接するように第１、第２吐出弁５００Ｓ、５００Ｔを組付けた場合（誤組付け）、第１、第２吐出弁５００Ｓ、５００Ｔが弁座１９０Ｓａ、１９０Ｔａから離れる方向に反ってしまい、冷媒の漏れが発生し、ロータリ圧縮機の性能が低下する。 Since the first and second discharge valves 500S and 500T are manufactured from a rolled steel plate made of spring steel by press punching, the surfaces of the first and second discharge valves 500S and 500T, which are outside the roll, are roll windings. Thus, the surface is slightly convex. Therefore, the first and second discharge valves 500S are provided so that the surfaces of the first and second discharge valves 500S and 500T are in contact with the first and second valve seats 190Sa and 190Ta of the first and second discharge holes 190S and 190T. When 500T is assembled (erroneous assembly), the first and second discharge valves 500S and 500T are warped away from the valve seats 190Sa and 190Ta, refrigerant leakage occurs, and the performance of the rotary compressor is reduced. descend.

そのため、図７に示すように、第１、第２吐出弁５００Ｓ、５００Ｔの長手方向の中心線Ｃを挟んだ一側にずらした位置に切欠き部５００Ｓｅ、５００Ｔｅを設け、第１、第２吐出弁５００Ｓ、５００Ｔの組付け時に、切欠き部５００Ｓｅ、５００Ｔｅを長手方向の中心線Ｃを挟んだ一側に位置させ（切欠き部５００Ｓｅ、５００Ｔｅが長手方向の中心線Ｃを挟んだ他側に位置するように組付けると誤組付けとなる）、第１、第２吐出弁５００Ｓ、５００Ｔの裏面が、第１、第２吐出孔１９０Ｓ、１９０Ｔの弁座１９０Ｓａ、１９０Ｔａと当接するようにしている。 Therefore, as shown in FIG. 7, notches 500Se and 500Te are provided at positions shifted to one side across the longitudinal center line C of the first and second discharge valves 500S and 500T. When the discharge valves 500S and 500T are assembled, the notches 500Se and 500Te are positioned on one side of the longitudinal center line C (the other side where the notches 500Se and 500Te sandwich the longitudinal center line C). If the first and second discharge valves 500S, 500T are in contact with the valve seats 190Sa, 190Ta of the first and second discharge holes 190S, 190T. ing.

また、従来、吐出弁装置を備えた主軸受、シリンダ、副軸受、偏心したピン部を持つシャフト、前記シャフトの回転により偏心回転するローラを有して構成された圧縮要素と、前記圧縮要素を駆動する回転子及び固定子を有して構成された電動機と、前記圧縮要素及び電動機を収納した密閉容器とを備え、前記吐出弁装置は吐出孔を設けた前記主軸受の窪みに弁がリベットで締結されて構成され、前記窪みは、台座リベット孔を有する台座と、前記台座の外周形状に沿った内周壁部とを備え、前記内周壁部は、前記台座リベット孔を中心とする回転方向に対して前記弁の位置決めをするための平行部分と、前記平行部分を円弧状に結ぶ円弧状部とを備え、前記弁は、前記吐出孔を開閉する可動部と、弁リベット孔を有する固定部とを備え、前記固定部は、前記内周壁部の形状に沿う外周形状を有すると共に、前記台座リベット孔に合致する前記リベット孔を有し、前記台座リベット孔及び前記弁リベット孔を貫通する前記リベットにより前記主軸受に取り付けられているロータリ圧縮において、前記内周壁部の平行部分の中心線を前記吐出孔の中心と前記台座リベット孔の中心とを結ぶ直線に対して偏心させ、弁の表裏の誤組立を防止するロータリ圧縮機が開示されている（例えば、特許文献１参照）。 Further, conventionally, a main bearing provided with a discharge valve device, a cylinder, a sub-bearing, a shaft having an eccentric pin part, a compression element configured to rotate eccentrically by the rotation of the shaft, and the compression element An electric motor having a rotor and a stator for driving, and a sealed container containing the compression element and the electric motor, and the discharge valve device has a rivet in a recess of the main bearing provided with a discharge hole The recess is provided with a pedestal having a pedestal rivet hole and an inner peripheral wall portion along the outer peripheral shape of the pedestal, and the inner peripheral wall portion rotates in the rotation direction about the pedestal rivet hole. The valve includes a parallel part for positioning the valve and an arcuate part connecting the parallel part in an arcuate shape, and the valve has a movable part that opens and closes the discharge hole and a fixed part having a valve rivet hole. And equipped with a front The fixed portion has an outer peripheral shape that conforms to the shape of the inner peripheral wall portion, and has the rivet hole that matches the pedestal rivet hole, and the main bearing by the rivet that penetrates the pedestal rivet hole and the valve rivet hole. In the rotary compression attached to the valve, the center line of the parallel part of the inner peripheral wall is decentered with respect to the straight line connecting the center of the discharge hole and the center of the pedestal rivet hole, thereby preventing erroneous assembly of the front and back of the valve A rotary compressor is disclosed (for example, see Patent Document 1).

特開２００８−１０１５０３号公報JP 2008-101503 A

しかしながら、図７〜図１０を参照して説明した上記従来の技術によれば、第１、第２吐出弁５００Ｓ、５００Ｔの第１、第２リベット孔５００Ｓｄ、５００Ｔｄから弁後端までの長さＬ_１は、第１、第２吐出弁押さえ５０１Ｓ、５０１Ｔの第１、第２リベット孔５０１Ｓｄ、５０１Ｔｄから押さえ後端までの長さＬ_２と同一の長さとなっていて、第１、第２吐出弁５００Ｓ、５００Ｔ及び第１、第２吐出弁押さえ５０１Ｓ、５０１Ｔの組付け後に、第１、第２吐出弁５００Ｓ、５００Ｔの誤組付けを検査しようとしても、切欠き部５００Ｓｅ、５００Ｔｅが第１、第２吐出弁押さえ５０１Ｓ、５０１Ｔの下に隠れて検査ができない、という問題がある。 However, according to the prior art described with reference to FIGS. 7 to 10, the length from the first and second rivet holes 500Sd and 500Td of the first and second discharge valves 500S and 500T to the rear end of the valve. L ₁ is a first, second discharge valve retainer 501S, the first 501T, the second rivet hole 501Sd, they become the same length and the length _{L 2} to the pressing member from 501Td, first, second After the discharge valves 500S and 500T and the first and second discharge valve holders 501S and 501T are assembled, the notch portions 500Se and 500Te are not formed even if the first and second discharge valves 500S and 500T are to be inspected incorrectly. There is a problem that the inspection cannot be performed because it is hidden under the first and second discharge valve holders 501S and 501T.

また、上記特許文献１に開示された従来のロータリ圧縮機は、内周壁部の平行部分の中心線を吐出孔の中心と台座リベット孔の中心とを結ぶ直線に対して偏心させているので、弁の形状が非対称でバランスが悪く、開閉動作時に弁が捩れ動作し、長期間稼働すると弁が疲労変形して閉塞性が悪くなる、という問題がある。 Further, in the conventional rotary compressor disclosed in Patent Document 1, the center line of the parallel portion of the inner peripheral wall portion is decentered with respect to the straight line connecting the center of the discharge hole and the center of the pedestal rivet hole. There is a problem that the shape of the valve is asymmetric and unbalanced, the valve twists during opening and closing, and the valve is fatigued and deformed when operated for a long period of time, resulting in poor occlusion.

本発明は、上記に鑑みてなされたものであって、吐出弁が長手方向の中心線に対して線対称でバランスが良く、吐出弁押さえの組付け後に吐出弁の誤組付けの検査を行なうことができる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 the discharge valve is axisymmetric with respect to the center line in the longitudinal direction and has a good balance, and the assembly of the discharge valve is inspected after the discharge valve presser is assembled. An object of the present invention is to obtain a rotary compressor that can be used.

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リード弁型の吐出弁を、長手方向の中心線に対して線対称に形成し、リベット取付側の端部の長手方向の中心線を挟んだ一側に弁体表裏判別マークを設け、リベット孔から前記リベット取付側の端部までの長さを、吐出弁押さえのリベット孔からリベット取付側の端部までの長さより長くし、前記吐出弁と前記吐出弁押さえを前記端板に組付けたとき、前記弁体表裏判別マークが前記吐出弁押さえの端部から露出し、前記弁体表裏判別マークの位置を目視可能としたことを特徴とする。 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 A rotary compressor having a motor for driving the compression unit via the rotating shaft, wherein a reed valve type discharge valve constituting the discharge valve unit is formed symmetrically with respect to a longitudinal center line. The valve body front / back identification mark is provided on one side across the longitudinal center line of the end portion on the rivet mounting side, and the length from the rivet hole to the end portion on the rivet mounting side is determined from the rivet hole of the discharge valve holder. When the discharge valve and the discharge valve retainer are assembled to the end plate longer than the length to the end on the rivet mounting side, the valve body front / back discrimination mark is exposed from the end of the discharge valve retainer, The position of the valve body front / back discrimination mark is made visible.

本発明によれば、吐出弁が長手方向の中心線に対して線対称でバランスが良く、吐出弁押さえの組付け後に吐出弁の誤組付けの検査を行なうことができる、という効果を奏する。 According to the present invention, there is an effect that the discharge valve is symmetrical with respect to the center line in the longitudinal direction and has a good balance, and an inspection of the incorrect assembly of the discharge valve can be performed after the assembly of the discharge valve presser.

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、実施例の第１、第２吐出弁を示す平面図である。FIG. 3 is a plan view showing the first and second discharge valves of the embodiment. 図４は、実施例の第１、第２吐出弁押さえを示す平面図である。FIG. 4 is a plan view showing the first and second discharge valve retainers of the embodiment. 図５は、実施例の第１、第２吐出弁及び第１、第２吐出弁押さえを組付けた上、下端板の部分平面図である。FIG. 5 is a partial plan view of the lower end plate after assembling the first and second discharge valves and the first and second discharge valve retainers of the embodiment. 図６は、図５のＡ−Ａ線に沿う部分断面図である。6 is a partial cross-sectional view taken along line AA in FIG. 図７は、従来の第１、第２吐出弁を示す平面図である。FIG. 7 is a plan view showing conventional first and second discharge valves. 図８は、従来の第１、第２吐出弁押さえを示す平面図である。FIG. 8 is a plan view showing conventional first and second discharge valve retainers. 図９は、従来の第１、第２吐出弁及び第１、第２吐出弁押さえを組付けた上、下端板の部分平面図である。FIG. 9 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. 図１０は、図９のＢ−Ｂ線に沿う部分断面図である。FIG. 10 is a partial cross-sectional view taken along line BB in FIG.

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。第１、第２シリンダ１２１Ｓ、１２１Ｔには、第１、第２ベーン溝１２８Ｓ、１２８Ｔから位相角度１８０°離れた位置に、第１、第２側方凸部１２２Ｓｔ、１２２Ｔｔが設けられている。 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. The first and second cylinders 121S and 121T are provided with first and second lateral protrusions 122St and 122Tt at positions 180 degrees away from the first and second vane grooves 128S and 128T, respectively.

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１２６Ｓ、１２６Ｔ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 126S and 126T 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, respectively.

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１２６Ｓ、１２６Ｔ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 first and second vane grooves 128S and 128T to the first by the repulsive force of the first and second vane springs 126S and 126T. , Projecting into the second working chambers 130S, 130T, the tips of which are in contact with the outer peripheral surfaces of the first and second annular pistons 125S, 125T, and the first and second vanes 127S, 127T act as the first and second actuations. The chambers 130S and 130T are 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吐出弁押さえ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吐出弁押さえ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 path that communicates with the upper muffler chamber 180T through the refrigerant path 136 (see FIG. 2) that passes through. 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 flexure opening of the first discharge valve 200S is fixed to the first discharge valve 200S together with the first discharge valve 200S by a rivet. 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吐出弁押さえ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吐出弁押さえ２０１Ｔは、上端板１６０Ｔの第２吐出弁部を構成している。第１、第２吐出弁部の詳細については、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 portions 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〜図６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吐出弁部について説明する。図３は、実施例の第１、第２吐出弁を示す平面図であり、図４は、実施例の第１、第２吐出弁押さえを示す平面図であり、図５は、実施例の第１、第２吐出弁及び第１、第２吐出弁押さえを組付けた上、下端板の部分平面図であり、図６は、図５のＡ−Ａ線に沿う部分断面図である。 Next, the first and second discharge valve portions that are characteristic configurations of the rotary compressor 1 according to the embodiment will be described with reference to FIGS. 3 is a plan view showing the first and second discharge valves of the embodiment, FIG. 4 is a plan view showing the first and second discharge valve presses of the embodiment, and FIG. 5 is a plan view of the embodiment. FIG. 6 is a partial plan view of the lower end plate after assembling the first and second discharge valves and the first and second discharge valve holders, and FIG. 6 is a partial cross-sectional view taken along line AA in FIG. 5.

図３に示すように、実施例の第１、第２吐出弁２００Ｓ、２００Ｔは、第１、第２リベット孔２００Ｓｄ、２００Ｔｄが設けられた第１、第２リベット取付部２００Ｓａ，２００Ｔａと、第１、第２吐出孔閉塞部２００Ｓｂ、２００Ｔｂと、第１、第２リベット取付部２００Ｓａ，２００Ｔａよりも幅の狭い第１、第２中間部２００Ｓｃ、２００Ｔｃとを有している。第１、第２吐出弁２００Ｓ、２００Ｔは、長手方向の中心線Ｃに対して線対称に形成されている。第１、第２リベット取付部２００Ｓａ、２００Ｔａの後端部（リベット取付側の端部）の長手方向の中心線Ｃを挟んだ一側には、弁体表裏判別マークとしての第１、第２切欠き部２００Ｓｅ、２００Ｔｅが設けられている。弁体表裏判別マークは、切欠き部に限定されず、孔、凹部、凸部又は色マーク等であってもよい。 As shown in FIG. 3, the first and second discharge valves 200S and 200T of the embodiment include first and second rivet mounting portions 200Sa and 200Ta provided with first and second rivet holes 200Sd and 200Td, 1 and 2nd discharge hole obstruction | occlusion part 200Sb, 200Tb, and 1st, 2nd intermediate part 200Sc, 200Tc narrower than 1st, 2nd rivet attachment part 200Sa, 200Ta. The first and second discharge valves 200S and 200T are formed symmetrically with respect to the longitudinal center line C. The first and second rivet mounting portions 200Sa and 200Ta have first and second discriminating marks on the front and back sides of the longitudinal center line C of the rear ends (ends on the rivet mounting side). Notches 200Se and 200Te are provided. The valve body front / back discrimination mark is not limited to the notch, and may be a hole, a concave portion, a convex portion, a color mark, or the like.

第１、第２吐出弁２００Ｓ、２００Ｔは、ばね鋼のロール鋼板からプレス打抜き加工により製造され、図３に示すように、第１、第２リベット取付部２００Ｓａ、２００Ｔａの長手方向の中心線Ｃを挟んだ一側に第１、第２切欠き部２００Ｓｅ、２００Ｔｅが位置するとき、ロールの外側である第１、第２吐出弁２００Ｓ、２００Ｔの表面が、図３の紙面の裏側から表側に向かって、僅かに凸面となっている。 The first and second discharge valves 200S and 200T are manufactured from a rolled steel plate of spring steel by press punching, and as shown in FIG. 3, the longitudinal center line C of the first and second rivet mounting portions 200Sa and 200Ta. When the first and second cutout portions 200Se and 200Te are located on one side of the roll, the surfaces of the first and second discharge valves 200S and 200T, which are outside the roll, face from the back side to the front side in FIG. The surface is slightly convex.

図４に示すように、実施例の第１、第２吐出弁押さえ２０１Ｓ、２０１Ｔは、平面視で角のとれた長方形に形成され、第１、第２リベット孔２０１Ｓｄ、２０１Ｔｄ及び第１、第２冷媒ガス抜き孔２０１Ｓｆ、２０１Ｔｆが設けられ、図４の紙面の裏側から表側に向かって反るように形成されている。第１、第２冷媒ガス抜き孔２０１Ｓｆ、２０１Ｔｆは、第１、第２吐出弁２００Ｓ、２００Ｔの第１、第２吐出孔閉塞部２００Ｓｂ、２００Ｔｂが開いて図３の紙面の表側に向かって動くとき、第１、第２吐出弁２００Ｓ、２００Ｔと第１、第２吐出弁押さえ２０１Ｓ、２０１Ｔとの間に滞留している冷媒ガスを逃し、第１、第２吐出弁２００Ｓ、２００Ｔの第１、第２吐出孔閉塞部２００Ｓｂ、２００Ｔｂが図３の紙面の裏側に向かって動いて閉じるとき、冷媒ガスを供給して、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。 As shown in FIG. 4, the first and second discharge valve holders 201S and 201T of the embodiment are formed in a rectangular shape with a corner in plan view, and the first and second rivet holes 201Sd and 201Td and the first and second 2 Refrigerant gas vent holes 201Sf and 201Tf are provided, and are formed so as to warp from the back side to the front side of the sheet of FIG. The first and second refrigerant gas vent holes 201Sf and 201Tf move toward the front side of the paper surface of FIG. 3 when the first and second discharge hole closing portions 200Sb and 200Tb of the first and second discharge valves 200S and 200T are opened. When the refrigerant gas stays between the first and second discharge valves 200S and 200T and the first and second discharge valve pressers 201S and 201T, the first and second discharge valves 200S and 200T first When the second discharge hole closing portions 200Sb and 200Tb move and close toward the back side of the sheet of FIG. 3, the refrigerant gas is supplied to reduce the valve opening and closing resistance of the first and second discharge valves 200S and 200T. Is.

図３及び図４に示すように、第１、第２吐出弁２００Ｓ、２００Ｔの第１、第２リベット孔２０１Ｓｄ、２０１Ｔｄから第１、第２リベット取付部２００Ｓａ、２００Ｔａの後端部（リベット取付側の端部）までの長さＬ_３を、第１、第２吐出弁押さえ２０１Ｓ、２０１Ｔの第１、第２リベット孔２０１Ｓｄ、２０１Ｔｄから後端部（リベット取付側の端部）までの長さＬ_２より長くしている。 As shown in FIGS. 3 and 4, rear end portions of the first and second rivet mounting portions 200Sa and 200Ta (from the first and second rivet holes 201Sd and 201Td of the first and second discharge valves 200S and 200T (rivet mounting)). the length _{L 3} to the end side), the first, second discharge valve retainer 201S, the first 201T, length of the second rivet hole 201Sd, from 201Td to the rear end portion (the end portion of the rivet side) It has to be longer than _{L 2.}

図５及び図６に示すように、ロータリ圧縮機の圧縮部１２（図１参照）の下、上端板１６０Ｓ、１６０Ｔには、第１、第２溝部１６３Ｓ、１６３Ｔが形成され、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。また、第１、第２リベット孔１９１Ｓ、１９１Ｔから第１、第２溝部１６３Ｓ、１６３Ｔの反吐出孔側の端部までの長さは、第１、第２吐出弁２００Ｓ、２００Ｔの第１、第２リベット孔２０１Ｓｄ、２０１Ｔｄから第１、第２リベット取付部２００Ｓａ、２００Ｔａの後端部（リベット取付側の端部）までの長さＬ_３に対応して従来よりも長くしている。 As shown in FIGS. 5 and 6, first and second groove portions 163S and 163T are formed on the upper end plates 160S and 160T below the compression portion 12 (see FIG. 1) of the rotary compressor. On the first and second discharge holes 190S and 190T sides of the two groove portions 163S and 163T, the diameter (width) is enlarged to form the first and second discharge hole side enlarged diameter portions 163Sb and 163Tb. The length from the first and second rivet holes 191S and 191T to the end of the first and second groove portions 163S and 163T on the side opposite to the discharge hole is the first and second discharge valves 200S and 200T. second rivet hole 201Sd, first from 201Td, second rivet portion 200Sa, are longer than the conventional corresponds to the length _{L 3} to the rear end of 200Ta (end of the rivet attaching side).

第１、第２溝部１６３Ｓ、１６３Ｔ内には、第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁押さえ２０１Ｓ、２０１Ｔが、第１、第２リベット２０３Ｓ、２０３Ｔにより組付けられる。図５に示すように、第１、第２吐出弁２００Ｓ、２００Ｔの第１、第２リベット孔２００Ｓｄ、２００Ｔｄから第１、第２リベット取付部２００Ｓａ、２００Ｔａの後端部（リベット取付側の端部）までの長さＬ_３は、第１、第２吐出弁押さえ２０１Ｓ、２０１Ｔの第１、第２リベット孔２０１Ｓｄ、２０１Ｔｄから後端部（リベット取付側の端部）までの長さＬ_２より長いので、第１、第２吐出弁２００Ｓ、２００Ｔの長手方向の中心線Ｃを挟んだ一側の後端部に位置する第１、第２切欠き部２００Ｓｅ、２００Ｔｅは、第１、第２吐出弁押さえ２０１Ｓ、２０１Ｔの後端部から露出し、目視可能である。 In the first and second groove portions 163S and 163T, the first and second discharge valves 200S and 200T and the first and second discharge valve pressers 201S and 201T are assembled by the first and second rivets 203S and 203T. . As shown in FIG. 5, rear end portions of the first and second rivet mounting portions 200Sa and 200Ta (ends on the rivet mounting side) from the first and second rivet holes 200Sd and 200Td of the first and second discharge valves 200S and 200T. length to part) _{L 3} are first, second discharge valve retainer 201S, the first 201T, the second rivet hole 201Sd, from 201Td to the rear end portion (the end portion of the rivet side) length _{L 2} Since it is longer, the first and second cutout portions 200Se and 200Te located at the rear end portion on one side across the center line C in the longitudinal direction of the first and second discharge valves 200S and 200T are the first and second notches. The two discharge valve holders 201S and 201T are exposed from the rear end portions and are visible.

そのため、図５に示すように、第１、第２切欠き部２００Ｓｅ、２００Ｔｅが、長手方向の中心線Ｃを挟んだ一側の後端部に位置していれば、第１、第２吐出弁２００Ｓ、２００Ｔの裏面が、第１、第２吐出孔１９０Ｓ、１９０Ｔの第１、第２弁座１９０Ｓａ、１９０Ｔａと当接する正しい組付け状態にあることがわかる。逆に、第１、第２切欠き部２００Ｓｅ、２００Ｔｅが、長手方向の中心線Ｃを挟んだ他側に位置していれば、誤組付け状態であり、分解、再組付けの必要がある。 Therefore, as shown in FIG. 5, if the first and second cutout portions 200Se and 200Te are located at the rear end portion on one side across the longitudinal center line C, the first and second discharge portions It can be seen that the back surfaces of the valves 200S and 200T are in the correct assembled state in contact with the first and second valve seats 190Sa and 190Ta of the first and second discharge holes 190S and 190T. On the contrary, if the first and second cutout portions 200Se and 200Te are located on the other side across the longitudinal center line C, it is in an erroneous assembly state and needs to be disassembled and reassembled. .

以上説明した、実施例の第１、第２吐出弁部の構成によれば、第１、第２吐出弁２００Ｓ、２００Ｔの第１、第２リベット孔２００Ｓｄ、２００Ｔｄから第１、第２リベット取付部２００Ｓａ、２００Ｔａの後端部（リベット取付側の端部）までの長さＬ_３を、第１、第２吐出弁押さえ２０１Ｓ、２０１Ｔの第１、第２リベット孔２０１Ｓｄ、２０１Ｔｄから後端部（リベット取付側の端部）までの長さＬ_２より長くしたので、第１、第２吐出弁２００Ｓ、２００Ｔ及び第１、第２吐出弁押さえ２０１Ｓ、２０１Ｔの組付け後に第１、第２吐出弁２００Ｓ、２００Ｔの誤組付けの検査を行なうことができる。また、第１、第２吐出弁２００Ｓ、２００Ｔを、中心線Ｃに対して線対称に形成したので、バランスが良く、開閉動作時に弁が捩れ動作することはない。 According to the configuration of the first and second discharge valve portions of the embodiment described above, the first and second rivets are attached from the first and second rivet holes 200Sd and 200Td of the first and second discharge valves 200S and 200T. part 200Sa, the rear end of 200Ta length _{L 3} up (rivet ends of the attaching side), the first, second discharge valve retainer 201S, the first 201T, the second rivet hole 201Sd, the rear end from 201Td since longer than the length _{L 2} of the up (rivet ends of the attaching side), the first, second discharge valve 200S, 200T and the first and second discharge valve retainer 201S, first after assembling the 201T, the second Inspection of incorrect assembly of the discharge valves 200S and 200T can be performed. Further, since the first and second discharge valves 200S, 200T are formed symmetrically with respect to the center line C, the balance is good and the valve does not twist during the opening / closing operation.

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）
１２２Ｓｔ第１側方凸部
１２２Ｔｔ第２側方凸部
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）
１２６Ｓ第１ベーンスプリング（ベーンスプリング）
１２６Ｔ第２ベーンスプリング（ベーンスプリング）
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）
２００Ｓａ第１リベット取付部（リベット取付部）
２００Ｔａ第２リベット取付部（リベット取付部）
２００Ｓｂ第１吐出孔閉塞部（吐出孔閉塞部）
２００Ｔｂ第２吐出孔閉塞部（吐出孔閉塞部）
２００Ｓｃ第１中間部（中間部）
２００Ｔｃ第２中間部（中間部）
２００Ｓｄ第１リベット孔（リベット孔）
２００Ｔｄ第２リベット孔（リベット孔）
２００Ｓｅ第１切欠き部（切欠き部、弁体表裏判別マーク）
２００Ｔｅ第２切欠き部（切欠き部、弁体表裏判別マーク）
２０１Ｓ第１吐出弁押さえ（吐出弁押さえ）
２０１Ｔ第２吐出弁押さえ（吐出弁押さえ）
２０１Ｓｄ第１リベット孔（リベット孔）
２０１Ｔｄ第２リベット孔（リベット孔）
２０１Ｓｆ第１冷媒ガス抜き孔（冷媒ガス抜き孔）
２０１Ｔｆ第２冷媒ガス抜き孔（冷媒ガス抜き孔）
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)
122St 1st side convex part 122Tt 2nd side convex part 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)
126S 1st vane spring (vane spring)
126T 2nd vane spring (vane spring)
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)
200Sa First rivet mounting part (rivet mounting part)
200Ta Second rivet mounting part (rivet mounting part)
200Sb first discharge hole closing part (discharge hole closing part)
200Tb 2nd discharge hole obstruction | occlusion part (discharge hole obstruction | occlusion part)
200 Sc First intermediate part (intermediate part)
200Tc Second intermediate part (intermediate part)
200Sd 1st rivet hole (rivet hole)
200Td Second rivet hole (rivet hole)
200Se 1st notch (notch, valve disc front / back discrimination mark)
200Te 2nd notch (notch, valve body front / back discrimination mark)
201S First discharge valve presser (discharge valve presser)
201T Second discharge valve presser (discharge valve presser)
201Sd 1st rivet hole (rivet hole)
201Td Second rivet hole (rivet hole)
201Sf 1st refrigerant gas vent hole (refrigerant gas vent hole)
201Tf Second refrigerant gas vent hole (refrigerant gas vent hole)
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:
The reed valve type discharge valve constituting the discharge valve portion is formed symmetrically with respect to the center line in the longitudinal direction, and the valve body front and back are arranged on one side across the center line in the longitudinal direction of the end portion on the rivet mounting side. A discrimination mark is provided, and the length from the rivet hole to the end on the rivet mounting side is made longer than the length from the rivet hole on the discharge valve press to the end on the rivet mounting side, and the discharge valve and the discharge valve press are When mounted on the end plate, the valve body front / back discrimination mark is exposed from the end of the discharge valve presser, and the position of the valve body front / back discrimination mark is visible.

The discharge valve has, on the opposite side of the rivet hole from the end on the rivet mounting side, an intermediate portion that is narrower than the width in the short direction passing through the center of the rivet hole, and the longitudinal direction The length from the center of the rivet hole to the end on the rivet mounting side is longer than the length from the center of the rivet hole to the intermediate part,
The rotary compressor according to claim 1.