JP4750551B2 - Method for manufacturing two-cylinder rotary hermetic compressor - Google Patents

Method for manufacturing two-cylinder rotary hermetic compressor Download PDF

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JP4750551B2
JP4750551B2 JP2005373695A JP2005373695A JP4750551B2 JP 4750551 B2 JP4750551 B2 JP 4750551B2 JP 2005373695 A JP2005373695 A JP 2005373695A JP 2005373695 A JP2005373695 A JP 2005373695A JP 4750551 B2 JP4750551 B2 JP 4750551B2
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cylinder
bearing
hermetic compressor
partition plate
crankshaft
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JP2007177624A (en
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将史 茗ヶ原
好範 白藤
寿史 柬理
尚裕 中村
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Description

この発明は、空気調和機や冷蔵庫などの冷凍空調装置に用いられる、冷媒ガスの圧縮を行う２気筒回転式密閉型圧縮機に関するもので、特に圧縮機構部の締結方法に関するものである。   The present invention relates to a two-cylinder rotary hermetic compressor for compressing refrigerant gas, which is used in a refrigerating and air-conditioning apparatus such as an air conditioner or a refrigerator, and particularly relates to a method for fastening a compression mechanism.

従来の２気筒回転式密閉型圧縮機における圧縮機構部の締結構造には、シリンダと軸受の締結で用いるボルトを使用せず、上シリンダ、下シリンダと中間仕切板の締結に軸受の外側で、それぞれのシリンダと中間仕切板を専用のボルトを用いて締結する方式が知られている（例えば、特許文献１参照）。   The fastening structure of the compression mechanism part in the conventional two-cylinder rotary hermetic compressor does not use bolts used for fastening the cylinder and the bearing, and is used for fastening the upper cylinder, the lower cylinder and the intermediate partition plate outside the bearing. A method is known in which each cylinder and an intermediate partition plate are fastened using a dedicated bolt (see, for example, Patent Document 1).

また、上下の軸受とシリンダをそれぞれ締結し、それらと中間仕切板とを下シリンダ側から通しボルトのみで上シリンダのネジ切り部に締結する方式が知られている（例えば、特許文献２参照）。
特開平６−１５９２７７号公報 特開昭６３−２９７７９１号公報 In addition, a method is known in which the upper and lower bearings and the cylinder are respectively fastened and the intermediate partition plate and the intermediate partition plate are passed from the lower cylinder side and fastened to the threaded portion of the upper cylinder only by bolts (for example, see Patent Document 2). .
JP-A-6-159277 JP 63-297791 A

従来の２気筒回転式密閉型圧縮機の圧縮機構部は、上下シリンダを締結する際に生じるシリンダの内径研磨部や平面研磨部などが歪変形し、漏れ損失や摺動損失が高くなることにより圧縮効率が低下するという課題があった。   The compression mechanism part of a conventional two-cylinder rotary hermetic compressor has a distortion and deformation of the inner diameter polishing part and flat polishing part of the cylinder that occur when the upper and lower cylinders are fastened, resulting in higher leakage loss and sliding loss. There was a problem that the compression efficiency was lowered.

また、特許文献１のように、上下シリンダと中間仕切板の締結に、軸受の外側でそれぞれのシリンダと中間仕切板を専用のボルトを用いて締結する方式の場合は、ボルトの数量が多いことによる価格面での課題があった。   In addition, as in Patent Document 1, in the case of fastening the upper and lower cylinders and the intermediate partition plate using a dedicated bolt, the number of bolts is large. There was a problem in terms of price.

この発明は、上記のよう課題を解決するためになされたもので、圧縮機構部組立の際のボルト締結によって生じる各部の歪変形を低減し、圧縮効率が高く高効率で、且つ圧縮機構部組立の締結構造の簡素化により安価な２気筒回転式密閉型圧縮機及びその製造方法を提供することを目的とする。   The present invention has been made to solve the above-described problems, and reduces distortion deformation of each part caused by bolt fastening at the time of assembling the compression mechanism part, resulting in high compression efficiency and high efficiency. It is an object of the present invention to provide an inexpensive two-cylinder rotary hermetic compressor and a manufacturing method thereof by simplifying the fastening structure.

この発明に係る２気筒回転式密閉型圧縮機は、密閉容器と、この密閉容器内の上部に収納される電動要素と、密閉容器内の下部に収納され、上軸受と、上シリンダと、中間仕切板と、下シリンダと、下軸受とを有し、電動要素によりクランクシャフトを介して駆動される圧縮機構部と、上軸受側より、上軸受、上シリンダ、中間仕切板を、下シリンダにネジ止め固定する上側通しボルトと、下軸受側より、下軸受、下シリンダ、中間仕切板を、上シリンダにネジ止め固定する下側通しボルトとを備え、上側通しボルトと、下側通しボルトとを、クランクシャフトの回転方向である周方向に少なくとも各２本交互に配置したことを特徴とする。   A two-cylinder rotary hermetic compressor according to the present invention includes a hermetic container, an electric element housed in an upper part of the hermetic container, a lower part in the hermetic container, an upper bearing, an upper cylinder, A compression mechanism having a partition plate, a lower cylinder, and a lower bearing and driven by an electric element via a crankshaft, and an upper bearing, an upper cylinder, and an intermediate partition plate from the upper bearing side to the lower cylinder. An upper through-bolt to be fixed with screws, and a lower through-bolt to fix the lower bearing, lower cylinder, and intermediate partition plate to the upper cylinder with screws from the lower bearing side, and an upper through-bolt and a lower through-bolt Are arranged alternately in the circumferential direction which is the rotation direction of the crankshaft.

この発明に係る２気筒回転式密閉型圧縮機は、上記構成により、上側通しボルトと、下側通しボルトとの締結による圧縮機構部の各部の歪変形を低減し、各シリンダと各軸受および各シリンダと中間仕切板のスラスト面の隙間からの漏れ損失を低減できるため、圧縮効率が高く高効率で、且つ圧縮機構部組立の締結構造の簡素化により安価な２気筒回転式密閉型圧縮機を得ることができる。   In the two-cylinder rotary hermetic compressor according to the present invention, with the above configuration, distortion deformation of each part of the compression mechanism portion due to fastening of the upper through bolt and the lower through bolt is reduced, and each cylinder, each bearing, and each Since the leakage loss from the gap between the thrust surface of the cylinder and the intermediate partition plate can be reduced, a high-efficiency and high-efficiency two-cylinder rotary hermetic compressor is achieved by simplifying the fastening structure of the compression mechanism assembly. Obtainable.

実施の形態１．
図１乃至図１５は実施の形態１を示す図で、図１は２気筒回転式密閉型圧縮機１０００の縦断面図、図２は２気筒回転式密閉型圧縮機１０００の圧縮機構部３０を示す分解斜視図、図３は上シリンダ５に上軸受９を上軸受締結ボルト１３で固定した平面図、図４は図３のＡ−Ａ断面図、図５は下シリンダ６に下軸受１０を下軸受締結ボルト１４で固定した平面図、図６は図５のＢ−Ｂ断面図、図７は上シリンダ５部分を組立て、下シリンダ６、下軸受１０が未装着状態の圧縮機構部の断面図、図８は下シリンダ６、下軸受１０を取り付け、下側通しボルト１６で下軸受１０、下シリンダ６、中間仕切板４を上シリンダ５に締結する直前の状態を示す平面図、図９は図８のＣ−Ｃ断面図、図１０は上側通しボルト１５で、上吐出マフラ１１、上軸受９、上シリンダ５、中間仕切板４を下シリンダ６に締結する直前、及び下軸受締結ボルト１４を取り外した状態を示す平面図、図１１は図１０のＤ−Ｄ断面図、図１２は下吐出マフラ１２、下軸受１０を下軸受締結ボルト１４で下シリンダ６に締結した状態を示す平面図、図１３は図１２のＥ−Ｅ断面図、図１４、図１５は圧縮機構部の組立て手順を示すフローチャートである。 Embodiment 1 FIG.
1 to 15 show the first embodiment. FIG. 1 is a longitudinal sectional view of a two-cylinder rotary hermetic compressor 1000. FIG. 2 shows a compression mechanism 30 of the two-cylinder rotary hermetic compressor 1000. 3 is an exploded perspective view, FIG. 3 is a plan view in which an upper bearing 9 is fixed to the upper cylinder 5 with upper bearing fastening bolts 13, FIG. 4 is a cross-sectional view taken along line AA in FIG. FIG. 6 is a cross-sectional view taken along the line BB of FIG. 5, FIG. 7 is a cross-sectional view of the compression mechanism portion in which the upper cylinder 5 is assembled, and the lower cylinder 6 and the lower bearing 10 are not mounted. 8 is a plan view showing a state immediately before the lower cylinder 6 and the lower bearing 10 are attached, and the lower bearing 10, the lower cylinder 6 and the intermediate partition plate 4 are fastened to the upper cylinder 5 with the lower through-bolts 16. FIG. 8 is a cross-sectional view taken along the line C-C in FIG. 8, and FIG. FIG. 11 is a cross-sectional view taken along the line DD in FIG. 10, and FIG. 12 is a plan view showing a state immediately before the receiver 9, the upper cylinder 5 and the intermediate partition plate 4 are fastened to the lower cylinder 6, and a state where the lower bearing fastening bolt 14 is removed. The top view which shows the state which fastened the lower discharge muffler 12 and the lower bearing 10 to the lower cylinder 6 with the lower bearing fastening bolt 14, FIG. 13 is EE sectional drawing of FIG. 12, FIG. 14, FIG. It is a flowchart which shows a procedure.

図１に示すように、２気筒回転式密閉型圧縮機１０００は、密閉容器１内の上部に駆動源となる電動要素２が収納される。電動要素２は、クランクシャフト３により密閉容器１内の下部に位置する圧縮機構部３０と連結し、圧縮機構部３０を駆動する。圧縮機構部３０は、上シリンダ５と下シリンダ６とを有する２気筒のものである。   As shown in FIG. 1, in the two-cylinder rotary hermetic compressor 1000, an electric element 2 serving as a drive source is housed in an upper part of the hermetic container 1. The electric element 2 is connected to the compression mechanism unit 30 located in the lower part of the sealed container 1 by the crankshaft 3 and drives the compression mechanism unit 30. The compression mechanism 30 is a two-cylinder cylinder having an upper cylinder 5 and a lower cylinder 6.

上シリンダ５には、クランクシャフト３の上側偏心部３ａに嵌合して上シリンダ５内でその内周面に沿って回転する上側ローリングピストン７ａと、上側ローリングピストン７ａに当接して往復運動する上側ベーン８ａ（図２参照）とが収納され、軸方向の上端面に上軸受９、下端面に中間仕切板４が組み合わされて、軸方向両開口部が閉塞される。   The upper cylinder 5 is engaged with the upper eccentric portion 3a of the crankshaft 3 and rotates in the upper cylinder 5 along the inner peripheral surface thereof, and reciprocates in contact with the upper rolling piston 7a. The upper vane 8a (see FIG. 2) is accommodated, and the upper bearing 9 is combined with the upper end surface in the axial direction, and the intermediate partition plate 4 is combined with the lower end surface, thereby closing both axial openings.

上軸受９は、上シリンダ５の上シリンダに設けられたネジ切り部５ａに上軸受締結ボルト１３で締結される。さらに、上吐出マフラ１１、上軸受９、上シリンダ５、中間仕切板４は上側通しボルト１５で下シリンダ６の下シリンダに設けられたネジ切り部６ａに締結される。この際、上側通しボルト１５は、上シリンダ５の上シリンダに設けられたキリ穴部５ｂを貫通する。   The upper bearing 9 is fastened by a top bearing fastening bolt 13 to a threaded portion 5 a provided in the upper cylinder 5. Further, the upper discharge muffler 11, the upper bearing 9, the upper cylinder 5, and the intermediate partition plate 4 are fastened to the threaded portion 6 a provided on the lower cylinder of the lower cylinder 6 with the upper through bolts 15. At this time, the upper through-bolt 15 passes through a drill hole 5 b provided in the upper cylinder of the upper cylinder 5.

下シリンダ６には、クランクシャフト３の下側偏心部３ｂに嵌合して下シリンダ６内でその内周面に沿って回転する下側ローリングピストン７ｂと、下側ローリングピストン７ｂに当接して往復運動する下側ベーン８ｂ（図２参照）とが収納され、軸方向の下端面に下軸受１０、上端面に中間仕切板４が組み合わされて、軸方向両開口部が閉塞される。   The lower cylinder 6 is in contact with the lower rolling piston 7b that fits into the lower eccentric portion 3b of the crankshaft 3 and rotates along the inner peripheral surface of the lower cylinder 6, and the lower rolling piston 7b. The reciprocating lower vane 8b (see FIG. 2) is housed, and the lower bearing 10 is combined with the lower end surface in the axial direction, and the intermediate partition plate 4 is combined with the upper end surface, thereby closing both axial openings.

下吐出マフラ１２、下軸受１０は、下シリンダ６の下シリンダに設けられたネジ切り部６ａに下軸受締結ボルト１４で締結される。さらに、下軸受１０、下シリンダ６、中間仕切板４は下側通しボルト１６で上シリンダ５の上シリンダに設けられたネジ切り部５ａに締結される。この際、下側通しボルト１６は、下シリンダ６の下シリンダに設けられたキリ穴部６ｂを貫通する。   The lower discharge muffler 12 and the lower bearing 10 are fastened by a lower bearing fastening bolt 14 to a threaded portion 6 a provided in the lower cylinder of the lower cylinder 6. Further, the lower bearing 10, the lower cylinder 6, and the intermediate partition plate 4 are fastened to a threaded portion 5 a provided on the upper cylinder 5 by a lower through bolt 16. At this time, the lower through-bolt 16 passes through a drill hole 6 b provided in the lower cylinder of the lower cylinder 6.

吐出管１７が、密閉容器１の上部に設けられる。上吐出マフラ１１、下吐出マフラ１２から吐出され、電動要素２を冷却した高圧の冷媒ガスが、吐出管１７から図示しない冷媒回路へ送出される。   A discharge pipe 17 is provided on the top of the sealed container 1. High-pressure refrigerant gas discharged from the upper discharge muffler 11 and lower discharge muffler 12 and cooling the electric element 2 is sent from the discharge pipe 17 to a refrigerant circuit (not shown).

また、吸入側には、冷媒回路からの冷媒を貯留するアキュムレータ１８が設けられる。アキュムレータ１８から、上シリンダ５及び下シリンダ６に低圧の冷媒ガスを送出する吸入連結管１９ａ及び吸入連結管１９ｂが、アウターパイプ２０ａ及びアウターパイプ２０ｂ、を介して上シリンダ５及び下シリンダ６の吸入口に接続される。インナーパイプ２１ａ及びインナーパイプ２１ｂが、アウターパイプ２０ａ及びアウターパイプ２０ｂと上シリンダ５及び下シリンダ６の吸入口との隙間を埋めるためにアウターパイプ２０ａ及びアウターパイプ２０ｂ内に圧入される。   On the suction side, an accumulator 18 for storing the refrigerant from the refrigerant circuit is provided. A suction connecting pipe 19a and a suction connecting pipe 19b for sending a low-pressure refrigerant gas from the accumulator 18 to the upper cylinder 5 and the lower cylinder 6 are sucked into the upper cylinder 5 and the lower cylinder 6 through the outer pipe 20a and the outer pipe 20b. Connected to the mouth. The inner pipe 21a and the inner pipe 21b are press-fitted into the outer pipe 20a and the outer pipe 20b so as to fill a gap between the outer pipe 20a and the outer pipe 20b and the suction ports of the upper cylinder 5 and the lower cylinder 6.

図２は圧縮機構部３０の要部を示す分解斜視図で、図１では図示されていない上側ベーン８ａ、下側ベーン８ｂが示されている。図１で既に述べたように、上からクランクシャフト３に嵌合する上軸受９、上シリンダ５、上シリンダ５内に収納され、クランクシャフト３の上側偏心部３ａに嵌合する上側ローリングピストン７ａ、上側ベーン８ａ、中間仕切板４、下シリンダ６内に収納され、クランクシャフト３の下側偏心部３ｂ（図示せず）に嵌合する下側ローリングピストン７ｂ、下側ベーン８ｂ、下シリンダ６、下軸受１０が主要な構成部品である。   FIG. 2 is an exploded perspective view showing the main part of the compression mechanism section 30. The upper vane 8a and the lower vane 8b are not shown in FIG. As already described with reference to FIG. 1, the upper rolling piston 7a is housed in the upper bearing 9, the upper cylinder 5, and the upper cylinder 5 that are fitted to the crankshaft 3 from above, and is fitted to the upper eccentric portion 3a of the crankshaft 3. The lower vane piston 7b, the lower vane 8b, and the lower cylinder 6 that are housed in the upper vane 8a, the intermediate partition plate 4, and the lower cylinder 6 and fit into the lower eccentric portion 3b (not shown) of the crankshaft 3. The lower bearing 10 is a main component.

以上のように構成された２気筒回転式密閉圧縮機の圧縮機構部３０の組立手順（２気筒回転式密閉圧縮機の製造方法の一例）を以下説明する。   A procedure for assembling the compression mechanism 30 of the two-cylinder rotary hermetic compressor configured as described above (an example of a method for manufacturing a two-cylinder rotary hermetic compressor) will be described below.

先ず、図３及び図４に示すように、上シリンダ５と上軸受９を３本の上軸受締結ボルト１３を用いて、上シリンダに設けられたネジ切り部５ａに固定する。このとき、上軸受９の内径と上シリンダ５の内径が同心となるよう組立てる（図１４のＳ１０）。上シリンダに設けられたネジ切り部５ａは、軸中心に対して同一円周上に等ピッチで配置されるのが最も好ましい。但し、これに限定されるものではなく、それに近い配置であればよい。また、上シリンダに設けられたキリ穴部５ｂは、上シリンダに設けられたネジ切り部５ａの間の３箇所に設けられる。従って、上シリンダに設けられたネジ切り部５ａと、上シリンダに設けられたキリ穴部５ｂとは、クランクシャフト３の回転方向である周方向に交互に全体で６箇所に配置した構成となる。尚、図３では、圧縮された冷媒ガスが吐出される吐出ポート付近も図示されているが、この実施の形態では、特に関係しないので言及しない。   First, as shown in FIGS. 3 and 4, the upper cylinder 5 and the upper bearing 9 are fixed to a threaded portion 5 a provided in the upper cylinder by using three upper bearing fastening bolts 13. At this time, assembly is performed so that the inner diameter of the upper bearing 9 and the inner diameter of the upper cylinder 5 are concentric (S10 in FIG. 14). Most preferably, the threaded portions 5a provided in the upper cylinder are arranged at an equal pitch on the same circumference with respect to the axial center. However, the arrangement is not limited to this, and any arrangement close thereto may be used. Moreover, the drill hole part 5b provided in the upper cylinder is provided in three places between the threading parts 5a provided in the upper cylinder. Therefore, the threaded portion 5a provided in the upper cylinder and the drill hole portion 5b provided in the upper cylinder are alternately arranged at six locations in the circumferential direction that is the rotational direction of the crankshaft 3 in total. . In FIG. 3, the vicinity of the discharge port through which the compressed refrigerant gas is discharged is also shown, but in this embodiment, it is not particularly mentioned because it is not particularly relevant.

次に、図５及び図６に示すように、下シリンダ６と下軸受１０を３本の下軸受締結ボルト１４を用いて、下シリンダに設けられたネジ切り部６ａに固定する。このとき、下軸受１０内径と下シリンダ６の内径が同心となるよう組立てる（図１４のＳ２０）。下シリンダに設けられたネジ切り部６ａは、軸中心に対して同一円周上に等ピッチで配置されるのが最も好ましい。但し、これに限定されるものではなく、それに近い配置であればよい。また、下シリンダに設けられたキリ穴部６ｂは、下シリンダに設けられたネジ切り部６ａの間の３箇所に設けられる。従って、下シリンダに設けられたネジ切り部６ａと、下シリンダに設けられたキリ穴部６ｂとは、クランクシャフト３の回転方向である周方向に交互に全体で６箇所に配置した構成となる。尚、図５では、圧縮された冷媒ガスが吐出される吐出ポート付近も図示されているが、この実施の形態では、特に関係しないので言及しない。   Next, as shown in FIGS. 5 and 6, the lower cylinder 6 and the lower bearing 10 are fixed to a threaded portion 6 a provided in the lower cylinder using three lower bearing fastening bolts 14. At this time, assembly is performed so that the inner diameter of the lower bearing 10 and the inner diameter of the lower cylinder 6 are concentric (S20 in FIG. 14). Most preferably, the threaded portions 6a provided in the lower cylinder are arranged at an equal pitch on the same circumference with respect to the axis center. However, the arrangement is not limited to this, and any arrangement close thereto may be used. Moreover, the drill hole part 6b provided in the lower cylinder is provided in three places between the threading parts 6a provided in the lower cylinder. Accordingly, the threaded portion 6a provided in the lower cylinder and the drill hole portion 6b provided in the lower cylinder are alternately arranged in six locations in the circumferential direction that is the rotational direction of the crankshaft 3 in total. . In FIG. 5, the vicinity of the discharge port through which the compressed refrigerant gas is discharged is also shown, but in this embodiment, it is not particularly related because it is not related.

次に、図７に示すように、上シリンダ５の内部に上側ローリングピストン７ａ、上側ベーン８ａ（図示せず）を挿入し、クランクシャフト３を上軸受９の内径部へ挿入し、またクランクシャフト３の上側偏心部３ａを上側ローリングピストン７ａの内径部に装着させる（図１４のＳ３０）。   Next, as shown in FIG. 7, the upper rolling piston 7a and the upper vane 8a (not shown) are inserted into the upper cylinder 5, the crankshaft 3 is inserted into the inner diameter portion of the upper bearing 9, and the crankshaft 3 is attached to the inner diameter portion of the upper rolling piston 7a (S30 in FIG. 14).

そして中間仕切板４の内径部にクランクシャフト３を通し、中間仕切板４の軸垂直方向の平面と上シリンダ５の軸垂直方向の平面とが密着するよう所定の位置に合わせる。さらに、クランクシャフト３の下側偏心部３ｂに下側ローリングピストン７ｂを装着する（図１４のＳ４０）。   Then, the crankshaft 3 is passed through the inner diameter portion of the intermediate partition plate 4 and is adjusted to a predetermined position so that the axial vertical plane of the intermediate partition plate 4 and the axial vertical plane of the upper cylinder 5 are in close contact with each other. Further, the lower rolling piston 7b is mounted on the lower eccentric portion 3b of the crankshaft 3 (S40 in FIG. 14).

次に、図８及び図９に示すように、下側ベーン８ｂ（図示せず）を挿入した下シリンダ６と下軸受１０の組立品（図５及び図６のもの）を組合せ、下軸受１０の内径部にクランクシャフト３の内径部を挿入し、下シリンダ６の軸垂直方向の平面と中間仕切板４の軸垂直方向の平面を密着させる（図１４のＳ５０）。   Next, as shown in FIGS. 8 and 9, the assembly of the lower cylinder 6 and the lower bearing 10 into which the lower vane 8b (not shown) is inserted (the one shown in FIGS. 5 and 6) is combined to form the lower bearing 10 The inner diameter portion of the crankshaft 3 is inserted into the inner diameter portion of the lower cylinder 6, and the plane perpendicular to the axis of the lower cylinder 6 and the plane perpendicular to the axis of the intermediate partition plate 4 are brought into close contact with each other (S50 in FIG. 14).

そこで、下軸受１０、下シリンダ６、中間仕切板４、上シリンダ５を締結するために、３本の下側通しボルト１６を下シリンダに設けられたキリ穴部６ｂを通し、上シリンダに設けられたネジ切り部５ａに固定する。この際上軸受９の内径部と下軸受１０の内径部の同心度を出すためクランクシャフト３を回転させながら組立て、下側通しボルト１６にて固定させる（図１５のＳ６０）。上シリンダに設けられたネジ切り部５ａと、下シリンダに設けられたキリ穴部６ｂとは、下側通しボルト１６が下シリンダに設けられたキリ穴部６ｂを軸方向に通り、上シリンダに設けられたネジ切り部５ａに締結されるような同心の位置関係になっている。   Therefore, in order to fasten the lower bearing 10, the lower cylinder 6, the intermediate partition plate 4, and the upper cylinder 5, three lower through bolts 16 are provided in the upper cylinder through the hole 6b provided in the lower cylinder. The threaded portion 5a is fixed. At this time, in order to obtain a concentricity between the inner diameter portion of the upper bearing 9 and the inner diameter portion of the lower bearing 10, the crankshaft 3 is assembled while rotating and fixed with the lower through-bolt 16 (S60 in FIG. 15). The threaded portion 5a provided in the upper cylinder and the drill hole 6b provided in the lower cylinder are arranged such that the lower through-bolt 16 passes through the drill hole 6b provided in the lower cylinder in the axial direction and passes through the upper cylinder. The concentric positional relationship is such that it is fastened to the provided threaded portion 5a.

また、下軸受締結ボルト１４が締結される下シリンダに設けられたネジ切り部６ａと、下シリンダに設けられたキリ穴部６ｂとは、クランクシャフト３の回転方向である周方向に交互に配置されている。そして、下シリンダに設けられたネジ切り部６ａと、上シリンダに設けられたキリ穴部５ｂとは、同心の位置関係になっている。   Further, the threaded portion 6 a provided in the lower cylinder to which the lower bearing fastening bolt 14 is fastened and the drill hole portion 6 b provided in the lower cylinder are alternately arranged in the circumferential direction which is the rotation direction of the crankshaft 3. Has been. And the threaded part 6a provided in the lower cylinder and the drill hole part 5b provided in the upper cylinder are concentric.

次に、図１０及び図１１に示すように、上軸受９の外周部に上吐出マフラ１１を例えば圧入等により装着し、上吐出マフラ１１、上軸受９、上シリンダ５、中間仕切板４、下シリンダ６を締結するために、上側通しボルト１５を上シリンダに設けられたキリ穴部５ｂを通し、下シリンダに設けられたネジ切り部６ａに締結して固定させる（図１５のＳ７０）。夫々３本の上側通しボルト１５と、下側通しボルト１６とは、クランクシャフト３の回転方向である周方向に交互に配置されている。同一円周上で、等ピッチに配置されるのが最も好ましい。但し、それに近い配置であればよい。   Next, as shown in FIGS. 10 and 11, the upper discharge muffler 11 is attached to the outer peripheral portion of the upper bearing 9 by, for example, press-fitting or the like, and the upper discharge muffler 11, the upper bearing 9, the upper cylinder 5, the intermediate partition plate 4, In order to fasten the lower cylinder 6, the upper through-bolt 15 is passed through the drill hole 5b provided in the upper cylinder and fastened and fixed to the threaded portion 6a provided in the lower cylinder (S70 in FIG. 15). The three upper through-bolts 15 and the lower through-bolts 16 are alternately arranged in the circumferential direction that is the rotation direction of the crankshaft 3. Most preferably, they are arranged at equal pitches on the same circumference. However, any arrangement close to that may be used.

その後、下シリンダ６と下軸受１０を締結していた下軸受締結ボルト１４を一旦外す。これは、下吐出マフラ１２を下軸受締結ボルト１４で固定するためである。図１２及び図１３に示すように、下軸受締結ボルト１４を一旦外したら、下吐出マフラ１２を下軸受１０の外周部に例えば圧入等により装着し、再度下軸受締結ボルト１４により下吐出マフラ１２、下軸受１０、下シリンダ６を締結させる（図１５のＳ８０）。   Thereafter, the lower bearing fastening bolt 14 that has fastened the lower cylinder 6 and the lower bearing 10 is temporarily removed. This is because the lower discharge muffler 12 is fixed by the lower bearing fastening bolt 14. As shown in FIGS. 12 and 13, once the lower bearing fastening bolt 14 is removed, the lower discharge muffler 12 is attached to the outer peripheral portion of the lower bearing 10 by, for example, press fitting, and the lower discharge muffler 12 is again inserted by the lower bearing fastening bolt 14. The lower bearing 10 and the lower cylinder 6 are fastened (S80 in FIG. 15).

以上のように、圧縮機構部３０がそれぞれ同数（本実施の形態では３本）の上側通しボルト１５と下側通しボルト１６によって交互に、クランクシャフト３の回転方向である同一円周上に等ピッチで締結されることにより、各部品のスラスト面にはそれぞれ均一な力が作用するため、従来の上シリンダ５、下シリンダ６と中間仕切板４の締結に、上軸受９及び下軸受１０の外側で、上シリンダ５と中間仕切板４及び下シリンダ６と中間仕切板４とを専用のボルトを用いて夫々締結する方式や、上軸受９と上シリンダ５及び下軸受１０と下シリンダ６をそれぞれ締結し、それらと中間仕切板４とを下シリンダ６側から下側通しボルト１６のみで上シリンダに設けられたネジ切り部５ａに締結する方式に比べて、締結の際に生じる上シリンダ５及び下シリンダ６の平面研磨部や内径研磨部の歪変形が低減するので、組立精度が高く、漏れ損失や摺動損失が低い、高効率圧縮機を得ることができる。尚、上側通しボルト１５と下側通しボルト１６はクランクシャフト３の回転方向である周方向に交互に配置されていればよい。上側通しボルト１５と下側通しボルト１６の本数は、最低限各２本あればよい。   As described above, the compression mechanism sections 30 are alternately arranged by the same number (three in this embodiment) of the upper through-bolts 15 and the lower through-bolts 16 on the same circumference as the rotation direction of the crankshaft 3. By fastening at a pitch, a uniform force acts on the thrust surface of each component. Therefore, the upper bearing 9 and the lower bearing 10 are used to fasten the conventional upper cylinder 5, lower cylinder 6 and intermediate partition plate 4. On the outside, the upper cylinder 5 and the intermediate partition plate 4 and the lower cylinder 6 and the intermediate partition plate 4 are respectively fastened using dedicated bolts, or the upper bearing 9 and the upper cylinder 5 and the lower bearing 10 and the lower cylinder 6 are The upper cylinder 5 generated at the time of fastening is compared with a method of fastening them respectively and fastening them and the intermediate partition plate 4 from the lower cylinder 6 side to the threaded portion 5a provided on the upper cylinder only by the lower through-bolt 16. And Since the strain deformation of the surface grinding portion and the inner diameter grinding of the lower cylinder 6 is reduced, high assembly accuracy can be leakage loss and sliding loss is low, to obtain a high efficiency compressor. The upper through-bolts 15 and the lower through-bolts 16 may be arranged alternately in the circumferential direction that is the rotation direction of the crankshaft 3. The number of the upper through bolts 15 and the lower through bolts 16 may be at least two each.

また、圧縮機構部３０を締結する上側通しボルト１５、下側通しボルト１６との間の円周ピッチを小さくすることにより、上シリンダ５及び下シリンダ６の平面研磨部が狭く設定でき、中間仕切板４を小型化できるため、材料費や加工費の低減による低価格の２気筒回転式密閉型圧縮機１０００を得ることが出来る。   Further, by reducing the circumferential pitch between the upper through-bolt 15 and the lower through-bolt 16 that fasten the compression mechanism 30, the planar polishing portions of the upper cylinder 5 and the lower cylinder 6 can be set narrow, and the intermediate partition Since the plate 4 can be reduced in size, a low-cost two-cylinder rotary hermetic compressor 1000 can be obtained by reducing material costs and processing costs.

実施の形態２．
図１６は実施の形態２を示す図で、２気筒回転式密閉型圧縮機２０００の縦断面図である。
図１６に示すように、本実施の形態の２気筒回転式密閉型圧縮機２０００は、アキュムレータ１８から１本の吸入連結管１９が、上シリンダ５又は下シリンダ６の吸入口に接続される。図１６の例は、吸入連結管１９が上シリンダ５の吸入口に接続される。 Embodiment 2. FIG.
FIG. 16 shows the second embodiment and is a longitudinal sectional view of a two-cylinder rotary hermetic compressor 2000. FIG.
As shown in FIG. 16, in the two-cylinder rotary hermetic compressor 2000 of the present embodiment, one intake connecting pipe 19 from the accumulator 18 is connected to the intake port of the upper cylinder 5 or the lower cylinder 6. In the example of FIG. 16, the suction connecting pipe 19 is connected to the suction port of the upper cylinder 5.

圧縮機構部３０の組立順序は実施の形態１と同一である。２気筒回転式密閉型圧縮機２０００の組立において、圧縮機構部３０と電動要素２を密閉容器１内に挿入した後、上シリンダ５の吸入口にアウターパイプ２０を挿入し、その内部にインナーパイプ２１を圧入する。その後アキュムレータ１８からの吸入連結管１９をアウターパイプ２０に挿入してロウ付けする。下シリンダ６の吸入口は、吸入連結穴４０を介して吸入連結管１９に連通している。   The assembly order of the compression mechanism unit 30 is the same as that of the first embodiment. In the assembly of the two-cylinder rotary hermetic compressor 2000, after the compression mechanism 30 and the electric element 2 are inserted into the sealed container 1, the outer pipe 20 is inserted into the suction port of the upper cylinder 5, and the inner pipe is inserted therein. 21 is press-fitted. Thereafter, the suction connecting pipe 19 from the accumulator 18 is inserted into the outer pipe 20 and brazed. The suction port of the lower cylinder 6 communicates with the suction connection pipe 19 through the suction connection hole 40.

アキュムレータ１８からの吸入連結管１９をアウターパイプ２０に挿入してロウ付けする際の加熱により上シリンダ５及び下シリンダ６の内径研磨部や平面研磨部等が歪変形し、漏れ損失や摺動損失が大きくなり、圧縮効率が低下する可能性がある。   Due to the heating when the suction connecting pipe 19 from the accumulator 18 is inserted into the outer pipe 20 and brazed, the inner diameter polishing portion, the flat polishing portion and the like of the upper cylinder 5 and the lower cylinder 6 are distorted and deformed, thereby causing leakage loss and sliding loss. May increase and the compression efficiency may decrease.

また、上シリンダ５及び下シリンダ６の双方に吸入連結管を有する２気筒回転式密閉型圧縮機１０００（実施の形態１）は、圧縮機運転時のそれぞれの吸入連結管１９ａ、吸入連結管１９ｂにおける冷媒の圧力脈動が大きくなるため、圧縮効率が低下する可能性がある。   Further, the two-cylinder rotary hermetic compressor 1000 (Embodiment 1) having the suction connection pipes in both the upper cylinder 5 and the lower cylinder 6 has the suction connection pipe 19a and the suction connection pipe 19b during the compressor operation. Since the pressure pulsation of the refrigerant increases, the compression efficiency may decrease.

さらに、インナーパイプ２１圧入時の衝撃が圧縮機構部３０を固定している各ボルトのせん断力を上回ると、上軸受９の内径と下軸受１０の内径の同心度がズレて、信頼性が低下する恐れがある。   Furthermore, if the impact when the inner pipe 21 is press-fitted exceeds the shearing force of each bolt fixing the compression mechanism 30, the concentricity between the inner diameter of the upper bearing 9 and the inner diameter of the lower bearing 10 is shifted, and reliability is reduced. There is a fear.

そこで、図１６に示すような吸入連結管１９が１本の２気筒回転式密閉型圧縮機２０００では、吸入連結管１９が２本の２気筒回転式密閉型圧縮機に比べて、アキュムレータ１８からの吸入連結管１９をロウ付けする箇所が１箇所であることにより、圧縮機構部３０への入熱量が低減し、上シリンダ５及び下シリンダ６の内径研磨部や平面研磨部等の歪変形が小さくなり、漏れ損失や摺動損失が低減するため、高効率の２気筒回転式密閉型圧縮機２０００を得ることができる。   Therefore, in the two-cylinder rotary hermetic compressor 2000 having one suction connecting pipe 19 as shown in FIG. 16, the accumulator 18 is compared with the two-cylinder rotary hermetic compressor having two suction cylinders 19. Since the number of locations where the suction connecting pipe 19 is brazed is one, the amount of heat input to the compression mechanism portion 30 is reduced, and distortion deformation of the inner diameter polishing portion and the plane polishing portion of the upper cylinder 5 and the lower cylinder 6 is reduced. Since the leakage loss and sliding loss are reduced, a highly efficient two-cylinder rotary hermetic compressor 2000 can be obtained.

また、吸入連結管が１本の２気筒回転式密閉型圧縮機２０００は、上シリンダ５及び下シリンダ６それぞれのシリンダ吸入口の手前で冷媒の流路が分岐しているため、吸入連結管が２本の２気筒回転式密閉型圧縮機１０００に比べて圧力損失が低下し、更なる高効率化が図れる。   Further, in the two-cylinder rotary hermetic compressor 2000 having one suction connection pipe, the refrigerant flow path is branched before the cylinder suction port of each of the upper cylinder 5 and the lower cylinder 6, so that the suction connection pipe is Compared with the two two-cylinder rotary hermetic compressor 1000, the pressure loss is reduced, and the efficiency can be further increased.

さらに、吸入連結管が１本の２気筒回転式密閉型圧縮機２０００は、インナーパイプ２１の圧入が１箇所であるため、インナーパイプ２１の圧入による上軸受９の内径と下軸受１０の内径の同心度への影響が低減し、更なる信頼性の向上が図れる。   Further, in the two-cylinder rotary type hermetic compressor 2000 having one suction connecting pipe, the inner pipe 21 is press-fitted at one place, so that the inner diameter of the upper bearing 9 and the inner diameter of the lower bearing 10 due to the inner pipe 21 are press-fitted. The influence on the concentricity is reduced, and the reliability can be further improved.

そして、吸入連結管が１本の２気筒回転式密閉型圧縮機２０００は、吸入連結管が２本の２気筒回転式密閉型圧縮機１０００に比べて部品点数が少ないため、低価格の２気筒回転式密閉型圧縮機２０００を得ることができる。   The two-cylinder rotary hermetic compressor 2000 with one suction connection pipe has a smaller number of parts than the two-cylinder rotary hermetic compressor 1000 with two suction connection pipes, so that the low-cost two-cylinder A rotary hermetic compressor 2000 can be obtained.

実施の形態３．
図１７、図１８は実施の形態３を示す図で、圧縮機構部３０の要部断面図である。
実施の形態１および実施の形態２で示したように、各ボルトによる圧縮機構部３０の締結により、上シリンダ５及び下シリンダ６の内径研磨部は歪変形することで真円度が悪化するため、漏れ損失や摺動損失が高くなる可能性がある。 Embodiment 3 FIG.
FIGS. 17 and 18 are diagrams showing the third embodiment, and are cross-sectional views of the main part of the compression mechanism 30. FIG.
As shown in the first and second embodiments, the roundness deteriorates due to the deformation of the inner diameter polished portions of the upper cylinder 5 and the lower cylinder 6 due to the fastening of the compression mechanism 30 by each bolt. Leakage loss and sliding loss may increase.

そこで、内径研磨部への歪変形を低減するために、実施の形態１および実施の形態２で示された２気筒密閉型回転圧縮機の上シリンダに設けられたネジ切り部５ａ及び下シリンダに設けられたネジ切り部６ａの端面に逃し部を設ける。   Therefore, in order to reduce distortion deformation to the inner diameter polishing portion, the threaded portion 5a and the lower cylinder provided in the upper cylinder of the two-cylinder hermetic rotary compressor shown in the first and second embodiments are provided. A relief portion is provided on the end face of the provided threaded portion 6a.

図１７に示すように、上シリンダ５と上軸受９を上軸受締結ボルト１３を用いて、上シリンダに設けられたネジ切り部５ａを介して固定すると、上シリンダ５の内径研磨部が破線で示す通り歪変形する。   As shown in FIG. 17, when the upper cylinder 5 and the upper bearing 9 are fixed using the upper bearing fastening bolt 13 via the threaded portion 5 a provided in the upper cylinder, the inner diameter polished portion of the upper cylinder 5 is indicated by a broken line. Deforms as shown.

そこで、図１８に示すように、上シリンダに設けられたネジ切り部５ａの各平面研磨部側に、一定の深さに渡って円筒形状の、上シリンダのネジ切り部の端面に設けられた逃がし部５ｃ、上シリンダのネジ切り部の端面に設けられた逃がし部５ｄを設けることにより、ボルト締結時の内径研磨部の歪変形を抑制することができる。   Therefore, as shown in FIG. 18, on the side of each flat polishing portion of the threaded portion 5a provided in the upper cylinder, a cylindrical shape is provided on the end surface of the threaded portion of the upper cylinder over a certain depth. By providing the relief portion 5c and the relief portion 5d provided on the end face of the threaded portion of the upper cylinder, distortion deformation of the inner diameter polishing portion at the time of bolt fastening can be suppressed.

これにより、各ボルトによる圧縮機構部３０の締結時に生じるシリンダの内径研磨部の真円度は改善され、組立精度が高く、漏れ損失や摺動損失が低い、高効率圧縮機を得ることができる。   Thereby, the roundness of the inner diameter polished portion of the cylinder generated when the compression mechanism portion 30 is fastened by each bolt is improved, and a highly efficient compressor with high assembly accuracy, low leakage loss and sliding loss can be obtained. .

図１８においては、上シリンダ５、上軸受９、上軸受締結ボルト１３を例に示したが、下シリンダ６、下軸受１０、下軸受締結ボルト１４の固定においても、上記と同様に下シリンダに設けられたネジ切り部６ａの端面に同じ逃し部を設けることにより、同様の効果を得ることができる。   In FIG. 18, the upper cylinder 5, the upper bearing 9, and the upper bearing fastening bolt 13 are shown as examples, but the lower cylinder 6, the lower bearing 10, and the lower bearing fastening bolt 14 are fixed to the lower cylinder in the same manner as described above. A similar effect can be obtained by providing the same relief portion on the end face of the provided threaded portion 6a.

実施の形態１を示す図で、２気筒回転式密閉型圧縮機の縦断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1, and is a longitudinal cross-sectional view of a 2-cylinder rotary type hermetic compressor. 実施の形態１を示す図で、２気筒回転式密閉型圧縮機の圧縮機構部３０を示す分解斜視図である。FIG. 3 is a diagram showing the first embodiment and is an exploded perspective view showing a compression mechanism portion 30 of a two-cylinder rotary hermetic compressor. 実施の形態１を示す図で、上シリンダ５に上軸受９を上軸受締結ボルト１３で固定した平面図である。FIG. 5 is a diagram showing the first embodiment, and is a plan view in which an upper bearing 9 is fixed to an upper cylinder 5 with upper bearing fastening bolts 13. 実施の形態１を示す図で、図３のＡ−Ａ断面図である。It is a figure which shows Embodiment 1 and is AA sectional drawing of FIG. 実施の形態１を示す図で、下シリンダ６に下軸受１０を下軸受締結ボルト１４で固定した平面図である。FIG. 4 is a diagram showing the first embodiment, and is a plan view in which a lower bearing 10 is fixed to a lower cylinder 6 with lower bearing fastening bolts 14. 実施の形態１を示す図で、図５のＢ−Ｂ断面図である。It is a figure which shows Embodiment 1, and is BB sectional drawing of FIG. 実施の形態１を示す図で、上シリンダ５部分を組立て、下シリンダ６、下軸受１０が未装着状態の圧縮機構部の断面図である。FIG. 3 is a diagram showing the first embodiment, and is a cross-sectional view of a compression mechanism portion in which an upper cylinder 5 portion is assembled and a lower cylinder 6 and a lower bearing 10 are not attached. 実施の形態１を示す図で、下シリンダ６、下軸受１０を取り付け、下側通しボルト１６で下軸受１０、下シリンダ６、中間仕切板４を上シリンダ５に締結する直前の状態を示す平面図である。FIG. 5 is a diagram illustrating the first embodiment, and shows a state immediately before the lower cylinder 6 and the lower bearing 10 are attached and the lower bearing 10, the lower cylinder 6, and the intermediate partition plate 4 are fastened to the upper cylinder 5 with the lower through-bolts 16. FIG. 実施の形態１を示す図で、図８のＣ−Ｃ断面図である。It is a figure which shows Embodiment 1, and is CC sectional drawing of FIG. 実施の形態１を示す図で、上側通しボルト１５で、上吐出マフラ１１、上軸受９、上シリンダ５、中間仕切板４を下シリンダ６に締結する直前、及び下軸受締結ボルト１４を取り外した状態を示す平面図である。In the figure which shows Embodiment 1, the upper discharge bolt 11, the upper bearing 9, the upper cylinder 5, and the intermediate partition plate 4 are just fastened to the lower cylinder 6 with the upper through bolt 15, and the lower bearing fastening bolt 14 is removed. It is a top view which shows a state. 実施の形態１を示す図で、図１０のＤ−Ｄ断面図である。It is a figure which shows Embodiment 1, and is DD sectional drawing of FIG. 実施の形態１を示す図で、下吐出マフラ１２、下軸受１０を下軸受締結ボルト１４で下シリンダ６に締結した状態を示す平面図である。FIG. 2 is a diagram showing the first embodiment, and is a plan view showing a state in which a lower discharge muffler 12 and a lower bearing 10 are fastened to a lower cylinder 6 with lower bearing fastening bolts 14. 実施の形態１を示す図で、図１２のＥ−Ｅ断面図である。It is a figure which shows Embodiment 1, and is EE sectional drawing of FIG. 実施の形態１を示す図で、圧縮機構部の組立て手順を示すフローチャート図である。FIG. 5 is a diagram showing the first embodiment and is a flowchart showing an assembling procedure of the compression mechanism section. 実施の形態１を示す図で、圧縮機構部の組立て手順を示すフローチャート図である。FIG. 5 is a diagram showing the first embodiment and is a flowchart showing an assembling procedure of the compression mechanism section. 実施の形態２を示す図で、２気筒回転式密閉型圧縮機の縦断面図である。It is a figure which shows Embodiment 2, and is a longitudinal cross-sectional view of a 2-cylinder rotary sealed compressor. 実施の形態３を示す図で、圧縮機構部３０の要部断面図である。FIG. 6 is a diagram showing a third embodiment, and is a cross-sectional view of a main part of a compression mechanism unit 30. FIG. 実施の形態３を示す図で、圧縮機構部３０の要部断面図である。FIG. 6 is a diagram showing a third embodiment, and is a cross-sectional view of a main part of a compression mechanism unit 30. FIG.

符号の説明Explanation of symbols

１ 密閉容器、２ 電動要素、３ クランクシャフト、３ａ 上側偏心部、３ｂ 下側偏心部、４ 中間仕切板、５ 上シリンダ、５ａ 上シリンダに設けられたネジ切り部、５ｂ 上シリンダに設けられたキリ穴部、５ｃ 上シリンダのネジ切り部の端面に設けられた逃がし部、５ｄ 上シリンダのネジ切り部の端面に設けられた逃がし部、６ 下シリンダ、６ａ 下シリンダに設けられたネジ切り部、６ｂ 下シリンダに設けられたキリ穴部、７ａ 上側ローリングピストン、７ｂ 下側ローリングピストン、８ａ 上側ベーン、８ｂ 下側ベーン、９ 上軸受、１０ 下軸受、１１ 上吐出マフラ、１２ 下吐出マフラ、１３ 上軸受締結ボルト、１４ 下軸受締結ボルト、１５ 上側通しボルト、１６ 下側通しボルト、１７ 吐出管、１８ アキュムレータ、１９ 吸入連結管、１９ａ 吸入連結管、１９ｂ 吸入連結管、２０ アウターパイプ、２０ａ アウターパイプ、２０ｂ アウターパイプ、２１ インナーパイプ、２１ａ インナーパイプ、２１ｂ インナーパイプ、３０ 圧縮機構部、４０ 吸入連結穴、１０００ ２気筒回転式密閉型圧縮機、２０００ ２気筒回転式密閉型圧縮機。   DESCRIPTION OF SYMBOLS 1 Airtight container, 2 Electric element, 3 Crankshaft, 3a Upper eccentric part, 3b Lower eccentric part, 4 Intermediate partition plate, 5 Upper cylinder, 5a Threaded part provided in upper cylinder, 5b Provided in upper cylinder Drill hole, 5c Relief provided on the end face of the threaded part of the upper cylinder, 5d Relief provided on the end face of the threaded part of the upper cylinder, 6 Lower cylinder, 6a Threaded part provided on the lower cylinder 6b Drill hole provided in the lower cylinder, 7a Upper rolling piston, 7b Lower rolling piston, 8a Upper vane, 8b Lower vane, 9 Upper bearing, 10 Lower bearing, 11 Upper discharge muffler, 12 Lower discharge muffler, 13 Upper bearing fastening bolt, 14 Lower bearing fastening bolt, 15 Upper through bolt, 16 Lower through bolt, 17 Discharge pipe, 18 Accum 19 suction connection pipe, 19a suction connection pipe, 19b suction connection pipe, 20 outer pipe, 20a outer pipe, 20b outer pipe, 21 inner pipe, 21a inner pipe, 21b inner pipe, 30 compression mechanism part, 40 suction connection Hole, 1000 2-cylinder rotary hermetic compressor, 2000 2-cylinder rotary hermetic compressor.

Claims (3)

上シリンダと下シリンダとを有する２気筒回転式密閉型圧縮機の製造方法において、
上軸受を上軸受締結ボルトを用いて前記上シリンダに固定し、
下軸受を下軸受締結ボルトを用いて前記下シリンダに固定し、
前記上シリンダの内部に上側ローリングピストン、上側ベーンを挿入し、クランクシャフトを上軸受内径部へ挿入し、前記クランクシャフトの上側偏心部を前記上側ローリングピストンの内径部に装着させ、
中間仕切板の内径部に前記クランクシャフトを通し、前記中間仕切板の軸垂直方向の平面と前記上シリンダの軸垂直方向の平面とが密着するよう所定の位置に合わせ、前記クランクシャフトの下側偏心部に下側ローリングピストンを装着し、
下側ベーンを挿入した前記下シリンダと前記下軸受の組立品を組合せ、前記下軸受の内径部に前記クランクシャフトを挿入し、前記下シリンダの軸垂直方向の平面と前記中間仕切板の軸垂直方向の平面を密着させ、
前記下軸受、前記下シリンダ、前記中間仕切板を、下側通しボルトで前記上シリンダに締結し、
前記上軸受の外周部に上吐出マフラを装着し、前記上吐出マフラ、前記上軸受、前記上シリンダ、前記中間仕切板を上側通しボルトで前記下シリンダに締結し、
前記下シリンダと前記下軸受を締結していた前記下軸受締結ボルトを一旦外し、下吐出マフラを前記下軸受の外周部に装着し、前記下軸受締結ボルトにより前記下吐出マフラ、前記下軸受、前記下シリンダを締結し、
前記上側通しボルトと、前記下側通しボルトとを、前記クランクシャフトの回転方向である周方向に少なくとも各２本交互に配置したことを特徴とする２気筒回転式密閉型圧縮機の製造方法。 In a method of manufacturing a two-cylinder rotary hermetic compressor having an upper cylinder and a lower cylinder,
Fix the upper bearing to the upper cylinder using the upper bearing fastening bolt,
Fix the lower bearing to the lower cylinder using lower bearing fastening bolts,
Insert the upper rolling piston and the upper vane inside the upper cylinder, insert the crankshaft into the upper bearing inner diameter part, and attach the upper eccentric part of the crankshaft to the inner diameter part of the upper rolling piston,
The crankshaft is passed through the inner diameter portion of the intermediate partition plate, and is aligned with a predetermined position so that the axial vertical plane of the intermediate partition plate and the axial vertical plane of the upper cylinder are in close contact with each other. Attach the lower rolling piston to the eccentric part,
Combined with the lower cylinder inserting the lower vane the assembly of the lower bearing, the crankshaft preparative inserted into the inside diameter portion of the lower bearing, the axis of the intermediate partition plate and the axial vertical plane of the lower cylinder Adhere the vertical plane,
Fasten the lower bearing, the lower cylinder, and the intermediate partition plate to the upper cylinder with lower through-bolts,
An upper discharge muffler is mounted on the outer periphery of the upper bearing, and the upper discharge muffler, the upper bearing, the upper cylinder, and the intermediate partition plate are fastened to the lower cylinder with upper through bolts,
The lower bearing fastening bolt that has fastened the lower cylinder and the lower bearing is temporarily removed, and a lower discharge muffler is attached to the outer periphery of the lower bearing, and the lower discharge muffler, the lower bearing, Fasten the lower cylinder,
A method of manufacturing a two-cylinder rotary hermetic compressor, wherein at least two of the upper through-bolts and the lower through-bolts are alternately arranged in the circumferential direction that is the rotation direction of the crankshaft. 当該２気筒回転式密閉型圧縮機は、冷媒回路からの冷媒を貯留するアキュムレータと、このアキュムレータと前記上シリンダ又は前記下シリンダとを連結する吸入連結管とを備えたことを特徴とする請求項１記載の２気筒回転式密閉型圧縮機の製造方法。 The two-cylinder rotary hermetic compressor includes an accumulator that stores refrigerant from a refrigerant circuit, and a suction connection pipe that connects the accumulator to the upper cylinder or the lower cylinder. A method for producing a 2-cylinder rotary hermetic compressor according to claim 1. 当該２気筒回転式密閉型圧縮機は、前記上側通しボルトをネジ止め固定する前記下シリンダに設けられたネジ切り部、及び前記下側通しボルトをネジ止め固定する前記上シリンダに設けられたネジ切り部は、各シリンダの軸方向に直交する両端面付近に所定の形状の逃し部を設けたことを特徴とする請求項１記載の２気筒回転式密閉型圧縮機の製造方法。 The two-cylinder rotary hermetic compressor includes a threaded portion provided in the lower cylinder for fixing the upper through-bolt with screws, and a screw provided in the upper cylinder for fixing the lower through-bolt with screws. 2. The method of manufacturing a two-cylinder rotary hermetic compressor according to claim 1, wherein the cut portion is provided with a relief portion having a predetermined shape in the vicinity of both end faces orthogonal to the axial direction of each cylinder.
JP2005373695A 2005-12-27 2005-12-27 Method for manufacturing two-cylinder rotary hermetic compressor Expired - Fee Related JP4750551B2 (en)

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