JPH06159277A

JPH06159277A - Multi-cylinder rotary compressor

Info

Publication number: JPH06159277A
Application number: JP31716492A
Authority: JP
Inventors: Akihiro Suda; 章博須田; Masayuki Hara; 正之原
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 1992-11-26
Filing date: 1992-11-26
Publication date: 1994-06-07

Abstract

PURPOSE:To prevent first and second bearings from being exerted with a by attaching bolts extending between first and second cylinders, for xing first and second cylinders, outside of the bearings. CONSTITUTION:A compression element 4 comprises cylinders 6, 7, an intermediate partition plate 5, and bearings 12, 13 fixed to cylinders 6, 7, for journalling a rotary shaft. Further, the bearings 12, 13, the cylinders 6, 7 and the intermediate partition plate 5 are axially aligned with each other, and are fastened together by bolts 6, 7. Further, the cylinders 6, 7 and the partition plate 5 are fixed by bolts 18 extending between the cylinders 6, 7, outside of the bearings 12, 13.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は複数のシリンダを重ね
合わせてボルトで固定する多気筒回転圧縮機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-cylinder rotary compressor in which a plurality of cylinders are superposed and fixed with bolts.

【０００２】[0002]

【従来の技術】従来の多気筒回転圧縮機は例えば特開昭
６３−２０５４８６号公報に示されているように構成さ
れている。ここで、この公報を参考に従来例を説明す
る。図３乃至図６において、５０は密閉容器で、５１は
密閉容器５０内の上側に設けられた固定子５２及び回転
子５３より構成される電動要素、５４は密閉容器５０内
の下側に設けられた回転圧縮要素である。2. Description of the Related Art A conventional multi-cylinder rotary compressor is constructed, for example, as disclosed in Japanese Patent Laid-Open No. 63-205486. Here, a conventional example will be described with reference to this publication. In FIGS. 3 to 6, 50 is a closed container, 51 is an electric element composed of a stator 52 and a rotor 53 provided on the upper side of the closed container 50, and 54 is provided on the lower side of the closed container 50. Rotary compression element.

【０００３】回転圧縮要素５４は中間仕切板５５を挟ん
で両側に第１のシリンダ５６及び第２のシリンダ５７が
装着されている。そして、上側に配置された第１のシリ
ンダ５６の上部には第１の軸受５８が取り付けられ、な
らびに下側に配置された第２のシリンダ５７の下部には
第２の軸受５９が取り付けられている。第１及び第２の
シリンダ５６，５７内にはそれぞれローラ６０，６１が
回転自在に配置されている。The rotary compression element 54 has a first cylinder 56 and a second cylinder 57 mounted on both sides of the intermediate partition plate 55. A first bearing 58 is attached to the upper part of the first cylinder 56 arranged on the upper side, and a second bearing 59 is attached to the lower part of the second cylinder 57 arranged on the lower side. There is. Rollers 60 and 61 are rotatably arranged in the first and second cylinders 56 and 57, respectively.

【０００４】各シリンダ５６，５７内のローラ６０，６
１と電動要素５１の回転子５３とが回転軸６２で連結さ
れ、電動要素５１で発生する回転力を駆動源として、そ
れぞれ圧縮運転を行うようにしている。Rollers 60, 6 in each cylinder 56, 57
1 and the rotor 53 of the electric element 51 are connected by the rotating shaft 62, and the compression operation is performed using the rotational force generated by the electric element 51 as a drive source.

【０００５】６３は第１のシリンダ５６の吸込側に接続
された吸込管、６４は中間仕切板５５及び第２のシリン
ダ５７に形成された吸込通路、６５は密閉容器５０の上
壁に連通接続された吐出管、６６，６７は第１及び第２
の軸受５８，５９に設けられた吐出マフラ、６８，６９
は第１及び第２の軸受５８，５９に設けられた吐出弁
で、これらにより第１及び第２のシリンダ５６，５７内
の圧縮室で圧縮された冷媒を、吐出弁６８，６９、吐出
マフラ６６，６７及び密閉容器５０内を経て吐出管６５
から外部に吐出させることができる構造にしている。63 is a suction pipe connected to the suction side of the first cylinder 56, 64 is a suction passage formed in the intermediate partition plate 55 and the second cylinder 57, and 65 is connected to the upper wall of the hermetically sealed container 50. Discharge pipes 66, 67 are the first and second
Muffler provided on the bearings 58, 59 of the
Is a discharge valve provided in the first and second bearings 58 and 59, which discharges the refrigerant compressed in the compression chambers in the first and second cylinders 56 and 57 by the discharge valves 68 and 69 and the discharge muffler. Discharge pipe 65 through 66, 67 and the closed container 50
It has a structure that can be discharged from the outside.

【０００６】そして、圧縮要素５４は、第１の軸受５８
及び第１のシルンダ５６を調芯して第１のボルト７０で
吐出マフラ６６と共に締結する一方、同様に第２の軸受
５９及び第２のシリンダ５７を調芯して仮止めネジ７１
で吐出マフラ６７と共に締結し、その後、両者にローラ
６０，６１及び回転軸６２を組み込んで、最後に軸長の
長い第２のボルト７２で、中間仕切板５５を介して両者
を締結した構造が用いられている。The compression element 54 has a first bearing 58.
And the first sillinder 56 are aligned and fastened together with the discharge muffler 66 by the first bolt 70, while the second bearing 59 and the second cylinder 57 are similarly aligned and the temporary set screw 71 is used.
Then, the rollers 60, 61 and the rotary shaft 62 are incorporated into both of them, and finally, the second bolt 72 having a long axial length is used to fasten the both through the intermediate partition plate 55. It is used.

【０００７】この構造の多気筒回転圧縮機では第１の軸
受５８と第１のシリンダ５６及び第２の軸受５９と第２
のシリンダ５７とをそれぞれ調芯した後、これらのシリ
ンダの間に中間仕切板５５を挟んで第１及び第２の軸受
５８，５９側からボルト７０，７２で固定し、圧縮装置
５４が正しく芯出しされて組み込まれるようにしてい
る。In the multi-cylinder rotary compressor having this structure, the first bearing 58, the first cylinder 56, the second bearing 59, and the second bearing 59 are provided.
After aligning the cylinder 57 with the cylinders 57, respectively, and sandwiching the intermediate partition plate 55 between these cylinders, and fixing them with bolts 70 and 72 from the first and second bearings 58 and 59 sides, the compression device 54 is correctly aligned. It is put out and incorporated.

【０００８】[0008]

【発明が解決しようとする課題】しかしながら、圧縮要
素５４は第１の軸受５８と第１のシリンダ５６とを調芯
してボルト７０で固定して回転軸６２に同芯出しを行い
ながら取り付けた後、第２の軸受５９と第２のシリンダ
５７とを調芯して仮止めネジ７１で仮止めして回転軸６
２に挿入し、この回転軸と第２の軸受５９との同芯出し
を行いながら第２のシリンダ５７と第２の軸受５９と
を、中間仕切板５５を介して第１のシリンダ５６にボル
ト７２で固定するため、このボルトによって第２の軸受
５９に締付応力が作用してこの第２の軸受に歪みが発生
し、各部品間のクリアランスにバラツキが生じて性能が
低下するとともに、クリアランスが狭くなった部分に摩
耗が発生して圧縮機の信頼性が低下する問題があった。However, the compression element 54 is mounted while aligning the first bearing 58 and the first cylinder 56 with the bolt 70 and concentric with the rotary shaft 62. After that, the second bearing 59 and the second cylinder 57 are aligned and temporarily fixed with the temporary set screw 71 to rotate the rotary shaft 6
The second cylinder 57 and the second bearing 59 are bolted to the first cylinder 56 via the intermediate partition plate 55 while the rotary shaft and the second bearing 59 are coaxially aligned. Since the bolt is fixed at 72, the bolt exerts a tightening stress on the second bearing 59 to cause distortion in the second bearing, which causes variations in the clearance between the respective parts to deteriorate the performance and also to reduce the clearance. There was a problem in that the reliability of the compressor deteriorated due to wear in the narrowed part.

【０００９】この発明は上記の問題を解決するもので、
第１及び第２の軸受をシリンダに取り付けるボルトの締
付トルクを小さくしてこの軸受に作用する応力を低下さ
せた多気筒回転圧縮機を提供することを目的としたもの
である。The present invention solves the above problems,
An object of the present invention is to provide a multi-cylinder rotary compressor in which the tightening torque of the bolts for mounting the first and second bearings on the cylinder is reduced to reduce the stress acting on the bearings.

【００１０】[0010]

【課題を解決するための手段】この発明は互いに回転角
をずらした偏心部を有する回転軸と、この回転軸の偏心
部にそれぞれ嵌め合わされるローラと、これらのローラ
を収容するシリンダと、これらのシリンダの間に挟持さ
れる中間仕切板と、前記シリンダの開口を封じるととも
に、前記回転軸を軸支する軸受とを備え、これらの軸
受、シリンダ及び中間仕切板等を調芯してボルトで固定
した多気筒回転圧縮機において、前記軸受をそれぞれの
シリンダにボルトで固定し、前記シリンダと中間仕切板
とを、軸受の外側でそれぞれのシリンダに跨ってボルト
で固定したものである。SUMMARY OF THE INVENTION The present invention is directed to a rotary shaft having eccentric parts whose rotational angles are offset from each other, rollers fitted into the eccentric parts of the rotary shaft, cylinders for accommodating these rollers, and these. Equipped with an intermediate partition plate sandwiched between the cylinders and a bearing that seals the opening of the cylinder and axially supports the rotary shaft, and aligns the bearing, the cylinder, the intermediate partition plate, etc. with a bolt. In the fixed multi-cylinder rotary compressor, the bearing is fixed to each cylinder with a bolt, and the cylinder and the intermediate partition plate are fixed with a bolt across each cylinder outside the bearing.

【００１１】[0011]

【作用】この発明は上記のように構成したことにより、
軸受の外側に各シリンダを跨って固定するボルトを配置
し、前記ボルトの締付応力で軸受に歪みが発生し各摺動
部のクリアランスが狭くなって性能が低下するととも
に、摩耗が発生するのを防止するようにしている。The present invention is constructed as described above,
Bolts that are fixed across the cylinders are placed outside the bearings, and the tightening stress of the bolts causes distortion of the bearings, which reduces the clearance of each sliding part and reduces the performance. I try to prevent it.

【００１２】[0012]

【実施例】以下この発明を図に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

【００１３】図１はこの発明の一実施例を示す多気筒回
転圧縮機の縦断面図である。図２はこの発明の回転圧縮
要素の要部断面図である。FIG. 1 is a vertical sectional view of a multi-cylinder rotary compressor showing an embodiment of the present invention. FIG. 2 is a sectional view of a main part of the rotary compression element according to the present invention.

【００１４】１は密閉容器で、この容器内には上側に回
転軸２を有する電動要素３と、下側にこの電動要素によ
って駆動される回転圧縮要素４とがそれぞれ収納されて
いる。Reference numeral 1 denotes a closed container, in which an electric element 3 having a rotary shaft 2 on the upper side and a rotary compression element 4 driven by the electric element on the lower side are respectively housed.

【００１５】回転圧縮要素４は中間仕切板５と、この仕
切板の上下に取り付けられた第１及び第２のシリンダ
６，７と、回転軸２に１８０°回転角をずらして設けら
れた偏心部８，９と、これらの偏心部によって第１及び
第２のシリンダ６，７内を回転する第１及び第２のロー
ラ１０，１１と、第１及び第２のシリンダ６，７の開口
を封じる第１の軸受１２及び第２の軸受１３と、これら
の軸受にそれぞれ取り付けられた吐出マフラ１４，１５
とで構成されている。The rotary compression element 4 includes an intermediate partition plate 5, first and second cylinders 6 and 7 mounted on the upper and lower sides of the partition plate, and an eccentricity provided on the rotary shaft 2 with a rotation angle of 180 °. The parts 8 and 9, the first and second rollers 10 and 11 rotating in the first and second cylinders 6 and 7 by these eccentric parts, and the openings of the first and second cylinders 6 and 7, respectively. First bearing 12 and second bearing 13 to be sealed, and discharge mufflers 14 and 15 attached to these bearings, respectively.
It consists of and.

【００１６】１６は第１の軸受１２と第１のシリンダ６
とを調芯して固定するボルトで、このボルトは第１のシ
リンダ６から中間仕切板５に飛び出さないような長さに
形成されている。１７は第２の軸受１３と第２のシリン
ダ７とを調芯して固定するボルトで、このボルトは第２
のシリンダ７から中間仕切板５に飛び出さないような長
さに形成されている。Reference numeral 16 denotes the first bearing 12 and the first cylinder 6
Is a bolt for aligning and fixing and, and is formed in such a length that it does not project from the first cylinder 6 to the intermediate partition plate 5. Reference numeral 17 denotes a bolt for aligning and fixing the second bearing 13 and the second cylinder 7, and this bolt is the second
The length is formed so as not to jump out from the cylinder 7 to the intermediate partition plate 5.

【００１７】１８は第１のシリンダ６から中間仕切板５
を介して第２のシリンダ７に延びるボルトで、このボル
トは第１及び第２の軸受１２，１３の外側に少なくとも
２本設けられている。Reference numeral 18 denotes the first cylinder 6 to the intermediate partition plate 5.
At least two bolts are provided outside the first and second bearings 12 and 13 and extend to the second cylinder 7 via.

【００１８】このように構成された多気筒回転圧縮機に
おいて、組立順序を説明すると、第１のシリンダ６には
第１の軸受１２が調芯されながらボルト１６で固定され
る。次に、第２のシリンダ７には第２の軸受１３が調芯
されながらボルト１７で固定される。そして、第１及び
第２の軸受１２，１３を取り付けた第１及び第２のシリ
ンダ６，７は間に中間仕切板５を挟持してこれらの軸受
の外側に設けられるボルト１８で固定されて圧縮要素４
が組立られる。In the multi-cylinder rotary compressor having the above structure, the order of assembly will be described. The first bearing 12 is fixed to the first cylinder 6 by the bolt 16 while being aligned. Next, the second bearing 13 is fixed to the second cylinder 7 with the bolt 17 while being aligned. The first and second cylinders 6 and 7 to which the first and second bearings 12 and 13 are attached have an intermediate partition plate 5 sandwiched therebetween and are fixed by bolts 18 provided outside these bearings. Compression element 4
Are assembled.

【００１９】第１及び第２の軸受１２，１３はそれぞれ
のシリンダ６，７に中間仕切板５に飛び出さない短いボ
ルト１６，１７で固定されることにより、このボルトの
締付力を小さくさせられ、締付応力による歪みを抑えら
れる。しかも、第１及び第２のシリンダ６，７を一体に
固定する長いボルト１８は第１及び第２の軸受１２，１
３の外側に設けることにより、締付力が第１及び第２の
軸受１２，１３に作用しないようにしている。The first and second bearings 12 and 13 are fixed to the respective cylinders 6 and 7 by short bolts 16 and 17 which do not project to the intermediate partition plate 5, so that the tightening force of these bolts is reduced. Therefore, distortion due to tightening stress can be suppressed. Moreover, the long bolt 18 for integrally fixing the first and second cylinders 6 and 7 has the first and second bearings 12, 1
By being provided on the outer side of 3, the tightening force is prevented from acting on the first and second bearings 12 and 13.

【００２０】すなわち、圧縮要素４の各部品を固定する
ボルト１６，１７，１８は取り付け個所を分散させるこ
とにより、１本当りの締付力を小さくさせてボルト締付
力によって第１及び第２の軸受１２，１３に歪みが発生
しにくくしている。That is, the bolts 16, 17 and 18 for fixing the respective parts of the compression element 4 are dispersed at the mounting points so that the tightening force per bolt is reduced and the first and second bolts are tightened by the bolt tightening force. The bearings 12 and 13 are made less likely to be distorted.

【００２１】尚、上記の説明においては、第１及び第２
の軸受１２，１３をそれぞれのシリンダ６，７に短いボ
ルト１６，１７で固定するように説明したが、少なくと
も一方のボルトを長くして第１及び第２のシリンダ６，
７に跨って締め付けるようにし、この第１及び第２の軸
受を固定する長いボルトの締付トルクを小さくさせても
よいことは言うまでもない。In the above description, the first and second
Although the bearings 12 and 13 of the above are fixed to the respective cylinders 6 and 7 by the short bolts 16 and 17, at least one of the bolts is lengthened to make the first and second cylinders 6 and 7.
It is needless to say that the tightening torque of the long bolts for fixing the first and second bearings may be reduced by tightening the bolts over seven.

【００２２】[0022]

【発明の効果】以上のようにこの発明によれば、互いに
回転角をずらした偏心部を有する回転軸と、この回転軸
の偏心部にそれぞれ嵌め合わされるローラと、これらの
ローラを収容するシリンダと、これらのシリンダの間に
挟持される中間仕切板と、前記シリンダの開口を封じる
とともに、前記回転軸を軸支する軸受とを備え、これら
の軸受、シリンダ及び中間仕切板等を調芯してボルトで
固定した多気筒回転圧縮機において、前記軸受をそれぞ
れのシリンダにボルトで固定し、前記シリンダと中間仕
切板とを、軸受の外側でそれぞれのシリンダに跨ってボ
ルトで固定したので、前記各シリンダ及び軸受を固定す
るボルトを分散でき、１本当りのボルトの締付力を小さ
くさせて軸受に歪みが発生しないようにでき、圧縮機の
組立時の歪みの低減及び信頼性を向上できる。As described above, according to the present invention, the rotating shaft having the eccentric parts whose rotational angles are different from each other, the rollers fitted into the eccentric parts of the rotating shaft, and the cylinders accommodating these rollers are provided. And an intermediate partition plate sandwiched between these cylinders, and a bearing that seals the opening of the cylinder and axially supports the rotating shaft, and aligns the bearing, the cylinder, the intermediate partition plate, and the like. In the multi-cylinder rotary compressor fixed with bolts, the bearings are fixed to the respective cylinders with bolts, and the cylinder and the intermediate partition plate are fixed with bolts over the respective cylinders outside the bearings. The bolts that fix each cylinder and bearing can be distributed, and the tightening force of each bolt can be reduced to prevent the bearing from being distorted. And the reliability can be improved.

【図面の簡単な説明】[Brief description of drawings]

【図１】この発明の一実施例を示す多気筒回転圧縮機の
縦断面図である。FIG. 1 is a vertical sectional view of a multi-cylinder rotary compressor showing an embodiment of the present invention.

【図２】この発明の回転圧縮要素の要部断面図である。FIG. 2 is a sectional view of an essential part of the rotary compression element according to the present invention.

【図３】従来の多気筒回転圧縮機の縦断面図である。FIG. 3 is a vertical sectional view of a conventional multi-cylinder rotary compressor.

【図４】従来の回転圧縮要素の断面図である。FIG. 4 is a sectional view of a conventional rotary compression element.

【図５】従来の回転軸に第１の軸受と第１のシリンダと
を組み込んだ断面図である。FIG. 5 is a cross-sectional view in which a first bearing and a first cylinder are incorporated into a conventional rotary shaft.

【図６】従来の第２の軸受と第２のシリンダとを調芯し
て組立てた断面図である。FIG. 6 is a cross-sectional view in which a conventional second bearing and a second cylinder are aligned and assembled.

【符号の説明】[Explanation of symbols]

２回転軸５中間仕切板６，７シリンダ８，９偏心部１０，１１ローラ１２，１３軸受１６，１７，１８ボルト 2 Rotating shaft 5 Intermediate partition plate 6,7 Cylinder 8,9 Eccentric part 10,11 Roller 12,13 Bearing 16,17,18 Bolt

Claims

【特許請求の範囲】[Claims]

【請求項１】互いに回転角をずらした偏心部を有する
回転軸と、この回転軸の偏心部にそれぞれ嵌め合わされ
るローラと、これらのローラを収容するシリンダと、こ
れらのシリンダの間に挟持される中間仕切板と、前記シ
リンダの開口を封じるとともに、前記回転軸を軸支する
軸受とを備え、これらの軸受、シリンダ及び中間仕切板
等を調芯してボルトで固定した多気筒回転圧縮機におい
て、前記軸受はそれぞれのシリンダにボルトで固定さ
れ、前記シリンダと中間仕切板とは軸受の外側でそれぞ
れのシリンダに跨ってボルトで固定されていることを特
徴とする多気筒回転圧縮機。1. A rotary shaft having eccentric parts whose rotational angles are deviated from each other, rollers fitted into the eccentric parts of the rotary shaft, cylinders accommodating these rollers, and sandwiched between these cylinders. A multi-cylinder rotary compressor in which an intermediate partition plate that closes the opening of the cylinder and a bearing that pivotally supports the rotating shaft is provided, and the bearing, the cylinder, the intermediate partition plate, and the like are aligned and fixed with bolts. 2. The multi-cylinder rotary compressor according to claim 1, wherein the bearing is fixed to each cylinder with a bolt, and the cylinder and the intermediate partition plate are fixed with a bolt across each cylinder outside the bearing.