JP2012251445A - Compressor, method of manufacturing compressor and refrigerating cycle device - Google Patents

Compressor, method of manufacturing compressor and refrigerating cycle device Download PDF

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JP2012251445A
JP2012251445A JP2011122989A JP2011122989A JP2012251445A JP 2012251445 A JP2012251445 A JP 2012251445A JP 2011122989 A JP2011122989 A JP 2011122989A JP 2011122989 A JP2011122989 A JP 2011122989A JP 2012251445 A JP2012251445 A JP 2012251445A
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compressor
pipe
case
welding
pipes
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Yoshiyuki Shimada
善幸 嶋田
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Toshiba Carrier Corp
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Toshiba Carrier Corp
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Abstract

PROBLEM TO BE SOLVED: To solve such a problem that there is a case of being difficult in welding by inclining a torch of a welding device from a reason such as a clearance of pipes is narrow, when connecting a plurality of pipes to a case of a compressor by welding such as arc welding.SOLUTION: The case of the compressor has the plurality of pipes adjacently arranged on an outer surface, a collar part projecting outward in the radial direction from an outer peripheral surface of the pipe, is arranged in at least one pipe among the plurality of pipes, and the collar part is welded to the case by an arc. This compressor has a first pipe having the collar part or having no collar part and a second pipe having the collar part, and is manufactured by welding the second pipe by the arc after welding the first pipe to the case by the arc.

Description

本発明の実施の形態は、ケース内に複数のシリンダを有する圧縮機と、その製造方法及び圧縮機を備えた冷凍サイクル装置に関する。   Embodiments described herein relate generally to a compressor having a plurality of cylinders in a case, a manufacturing method thereof, and a refrigeration cycle apparatus including the compressor.

一般的な圧縮機には、ケース内に複数のシリンダを有する圧縮機構部を備えたものが知られている。このような圧縮機にはケース外部の冷媒を導通するための冷媒配管が接続されており、冷媒配管を介して複数のシリンダのシリンダ室へ冷媒が導通されるようになっている。この冷媒配管は圧縮機のケースに直接ロウ付けにより接続されることもあれば、ケースに溶接されたガイドホルダ等の補強部材を介して接続されることもある。   As a general compressor, one having a compression mechanism having a plurality of cylinders in a case is known. Such a compressor is connected to a refrigerant pipe for conducting a refrigerant outside the case, and the refrigerant is conducted to the cylinder chambers of the plurality of cylinders via the refrigerant pipe. The refrigerant pipe may be directly connected to the case of the compressor by brazing or may be connected via a reinforcing member such as a guide holder welded to the case.

特開平０７−１６７０５９号公報Japanese Patent Application Laid-Open No. 07-167059

上記ガイドホルダ等の配管類は、ケースの熱変形による悪影響を抑えるため、予めアーク溶接により接続されるのが好ましい。しかし、複数の配管類をアーク溶接等の溶接により接続する場合、配管類の隙間が狭い等の理由から溶接装置のトーチを傾けての溶接が困難な場合がある。
本発明は圧縮機のケースに接続される配管類のアーク溶接を容易にすることを目的とする。 The piping such as the guide holder is preferably connected in advance by arc welding in order to suppress adverse effects due to thermal deformation of the case. However, when a plurality of pipes are connected by welding such as arc welding, it may be difficult to weld by tilting the torch of the welding apparatus because the gap between the pipes is narrow.
It is an object of the present invention to facilitate arc welding of piping connected to a compressor case.

本発明は上記問題を解決するためになされたものであり、本発明の実施形態によれば、圧縮機のケースは外面に隣接して設けられた複数の管を有しており、この複数の管のうち少なくとも一つの管には、管の外周面から半径方向外方に突出したつば部が設けられており、つば部はケースにアーク溶接されている。
また、この上記圧縮機は、つば部を有する又は有さない第１の管と、つば部を有する第２の管を有しており、第１の管をケースにアーク溶接した後に、第２の管をアーク溶接して製造される。 The present invention has been made to solve the above problems, and according to the embodiment of the present invention, the compressor case has a plurality of tubes provided adjacent to the outer surface, and the plurality of tubes are provided. At least one of the tubes is provided with a flange portion that protrudes radially outward from the outer peripheral surface of the tube, and the flange portion is arc welded to the case.
The compressor has a first tube with or without a collar portion and a second tube with a collar portion. After the first tube is arc-welded to the case, the second tube Manufactured by arc welding.

本発明の第１の実施形態に係る圧縮機の縦断面と冷凍サイクル装置の概略図。BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-section of the compressor which concerns on the 1st Embodiment of this invention, and the schematic of a refrigeration cycle apparatus. 本発明の第１の実施形態に係るガイドパイプの断面図。Sectional drawing of the guide pipe which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係るガイドパイプの断面図。Sectional drawing of the guide pipe which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係るその他ガイドパイプの断面図。Sectional drawing of the other guide pipe which concerns on the 1st Embodiment of this invention. 本発明の第２の実施形態に係るガイドパイプの断面図。Sectional drawing of the guide pipe which concerns on the 2nd Embodiment of this invention. 本発明の第２の実施形態に係るガイドパイプの正面図。The front view of the guide pipe which concerns on the 2nd Embodiment of this invention.

図面を用いて本発明の実施形態について説明を行う。
（第１の実施形態）
図１に圧縮機１の縦断面図を示す。圧縮機１は、上端が開口した縦長円筒形状の本体部１１Ａと、本体部１１Ａの開口した上端を閉塞する蓋部１１Ｂとで構成された密閉ケース１１を有している。
本体部１１Ａの下方側面には、縦方向に隣設する２つの第１、第２の開口部１２ａ、１２ｂが設けられている。 Embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 shows a longitudinal sectional view of the compressor 1. The compressor 1 has a hermetic case 11 composed of a vertically long cylindrical main body portion 11A having an open upper end and a lid portion 11B that closes the open upper end of the main body portion 11A.
On the lower side surface of the main body 11A, two first and second openings 12a and 12b are provided adjacent to each other in the vertical direction.

密閉ケース１１の本体部１１Ａ内部には上方に配置された電動機部４と、下方に配置された圧縮機構部３を備えており、電動機部４と圧縮機構部３は動力を伝達するための回転軸５で連結されている。
圧縮機構部３は中間仕切り板２を有しており、中間仕切り板２の上面側に配された第１のシリンダ６Ａと、下面側に配された第２のシリンダ６Ｂを備えている。さらに、第１のシリンダ６Ａの上面側には主軸受７が取付け固定されており、第２のシリンダ６Ｂの下面側には副軸受８が取付けられ固定されている。 The main body 11A of the sealed case 11 includes an electric motor part 4 disposed above and a compression mechanism part 3 disposed below. The electric motor part 4 and the compression mechanism part 3 rotate to transmit power. They are connected by a shaft 5.
The compression mechanism unit 3 includes an intermediate partition plate 2, and includes a first cylinder 6 </ b> A disposed on the upper surface side of the intermediate partition plate 2 and a second cylinder 6 </ b> B disposed on the lower surface side. Further, the main bearing 7 is attached and fixed to the upper surface side of the first cylinder 6A, and the auxiliary bearing 8 is attached and fixed to the lower surface side of the second cylinder 6B.

主軸受７は回転軸５の主軸部５ａを軸支し、副軸受８は回転軸５の副軸部５ｂを軸支する。さらに、回転軸５は、第１、第２のシリンダ６Ａ、６Ｂに設けられた内径部を貫通するとともに、略１８０°の位相差をもって形成される第１の偏心部ａと第２の偏心部ｂを一体に備えている。   The main bearing 7 supports the main shaft portion 5 a of the rotating shaft 5, and the auxiliary bearing 8 supports the auxiliary shaft portion 5 b of the rotating shaft 5. Further, the rotating shaft 5 passes through the inner diameter portions provided in the first and second cylinders 6A and 6B, and is formed with a first eccentric portion a and a second eccentric portion formed with a phase difference of about 180 °. b is integrally provided.

第１、第２の偏心部ａ、ｂは互いに同一軸径をなし、第１、第２のシリンダ６Ａ、６Ｂの内径部に位置するように組立てられる。第１の偏心部ａの周面には、第１のローラ９ａが嵌合され、第２の偏心部ｂの周面には、第２のローラ９ｂが嵌合されている。   The first and second eccentric parts a and b have the same shaft diameter and are assembled so as to be positioned at the inner diameter parts of the first and second cylinders 6A and 6B. A first roller 9a is fitted on the peripheral surface of the first eccentric part a, and a second roller 9b is fitted on the peripheral surface of the second eccentric part b.

第１のシリンダ６Ａの内径部は、主軸受７と中間仕切り板２によって囲まれており、第１のシリンダ室Ｓａが形成される。第２のシリンダ６Ｂの内径部は、副軸受８と中間仕切り板２によって囲まれており、第２のシリンダ室Ｓｂが形成されている。   An inner diameter portion of the first cylinder 6A is surrounded by the main bearing 7 and the intermediate partition plate 2, and a first cylinder chamber Sa is formed. An inner diameter portion of the second cylinder 6B is surrounded by the auxiliary bearing 8 and the intermediate partition plate 2, and a second cylinder chamber Sb is formed.

中間仕切り板２の厚さは第１、第２の偏心部ａ、ｂの回転による回転軸５に掛かるたわみ荷重を低減するために一定の厚さ以下に形成されている。中間仕切り板２の厚さが厚すぎると、圧縮機１の運転中に回転軸５がたわみ、ローラ９ａ、９ｂの磨耗や、圧縮機構部３の故障の原因となる。   The thickness of the intermediate partition plate 2 is formed to be equal to or less than a certain thickness in order to reduce the deflection load applied to the rotating shaft 5 due to the rotation of the first and second eccentric portions a and b. If the intermediate partition plate 2 is too thick, the rotating shaft 5 will bend during the operation of the compressor 1, which will cause wear of the rollers 9 a and 9 b and failure of the compression mechanism 3.

第１のシリンダ６Ａには、図示しない第１のベーンが往復移動自在に収容されており、第２のシリンダ６Ｂには、図示しない第２のベーンが往復移動自在に収容されている。これら第１、第２のベーンにより第１、第２のシリンダ室Ｓａ、Ｓｂは吸込み室側と吐出室側とに区画されている。
第１、第２のシリンダ６Ａ、６Ｂには、冷媒を吸込むための貫通孔２０ａ、２０ｂが設けられており、本体部１１Ａの側面に設けられた第１、第２の開口部１２ａ、１２ｂに面している。 A first vane (not shown) is accommodated in the first cylinder 6A so as to be reciprocally movable, and a second vane (not shown) is accommodated in the second cylinder 6B so as to be reciprocally movable. By these first and second vanes, the first and second cylinder chambers Sa and Sb are partitioned into a suction chamber side and a discharge chamber side.
The first and second cylinders 6A and 6B are provided with through holes 20a and 20b for sucking the refrigerant. The first and second openings 12a and 12b provided on the side surface of the main body 11A are provided in the first and second cylinders 6A and 6B. Facing.

第１の開口部１２ａには、略円筒形状の第１のガイドパイプ２１ａの一端が挿入されており、アーク溶接により本体部１１Ａに固着されている。
また、第２の開口部１２ｂには、略円筒形状の第２のガイドパイプ２１ｂの一端が挿入される。第２のガイドパイプ２１ｂの一端側の中途部には、外周面から半径方向外方に突出したつば部２２ｂが全周に亘り形成されている。このつば部２２ｂは本体部１１Ａの外側からアーク溶接により本体部１１Ａに固着されている。
ここで、第１、第２のガイドパイプ２１ａ、２１ｂの外周面間の距離は第１、第２の開口部１２ａ、１２ｂの間隔と略同等のＬであり、アーク溶接装置のトーチ２０１（図２、３参照）の直径よりも大きい。
さらに、圧縮機構部３の中間仕切り板２は、トーチ２０１の直径以上の厚さを有しており、第１、第２のシリンダ６Ａ、６Ｂの間隔が設定されている。 One end of a substantially cylindrical first guide pipe 21a is inserted into the first opening 12a, and is fixed to the main body 11A by arc welding.
In addition, one end of a substantially cylindrical second guide pipe 21b is inserted into the second opening 12b. A flange portion 22b that protrudes outward in the radial direction from the outer peripheral surface is formed in the middle portion on the one end side of the second guide pipe 21b over the entire circumference. The collar portion 22b is fixed to the main body portion 11A from the outside of the main body portion 11A by arc welding.
Here, the distance between the outer peripheral surfaces of the first and second guide pipes 21a and 21b is L, which is substantially equal to the distance between the first and second openings 12a and 12b, and the torch 201 (see FIG. 2 and 3)).
Further, the intermediate partition plate 2 of the compression mechanism unit 3 has a thickness equal to or larger than the diameter of the torch 201, and the interval between the first and second cylinders 6A and 6B is set.

第１、第２のガイドパイプ２１ａ、２１ｂの他端側からは、銅製のテーパーパイプ２３ａ 、２３ｂが挿入され、貫通孔２０ａ、２０ｂに隙間なく圧入されている。
テーパーパイプ２３ａ 、２３ｂには、銅製の冷媒配管１９、１９の一端が接続され、ロウ付けされている。冷媒配管１９、１９の他端はアキュームレータ１８に接続されており、第１、第２のシリンダ６Ａ、６Ｂのシリンダ室Ｓａ、Ｓｂの吸込み室側は、貫通孔２０ａ、２０ｂと、第１、第２のガイドパイプ２１ａ、２１ｂに挿入されたテーパーパイプ２３ａ 、２３ｂと、冷媒配管１９、１９を介して、アキュームレータ１８に連通している。 Copper tapered pipes 23a and 23b are inserted from the other end sides of the first and second guide pipes 21a and 21b, and are press-fitted into the through holes 20a and 20b without any gaps.
One ends of copper refrigerant pipes 19 and 19 are connected to the taper pipes 23a and 23b and brazed. The other ends of the refrigerant pipes 19 and 19 are connected to the accumulator 18, and the suction chamber side of the cylinder chambers Sa and Sb of the first and second cylinders 6A and 6B is connected to the through holes 20a and 20b and the first and second The taper pipes 23 a and 23 b inserted into the two guide pipes 21 a and 21 b and the refrigerant pipes 19 and 19 communicate with the accumulator 18.

（製造方法）
上記のように構成された圧縮機１は、図２、３に示すように製造過程の初期段階において本体部１１Ａの開口部１２ａ 、１２ｂにガイドパイプ２１ａ、２１ｂが溶接装置によりアーク溶接される。
ここで、使用されるアーク溶接装置のトーチ２０１は第１、第２のガイドパイプの円筒外周面の距離L未満の直径を有しており、第１、第２のガイドパイプ２１ａ、２１ｂの間を通過しつつ、溶接を行なうことができる。 (Production method)
In the compressor 1 configured as described above, as shown in FIGS. 2 and 3, the guide pipes 21a and 21b are arc-welded to the openings 12a and 12b of the main body 11A by a welding device in the initial stage of the manufacturing process.
Here, the torch 201 of the arc welding apparatus used has a diameter less than the distance L between the cylindrical outer peripheral surfaces of the first and second guide pipes, and is between the first and second guide pipes 21a and 21b. Welding can be performed while passing through.

図２に示すように、第１の開口部１２ａに挿入された第１のガイドパイプ２１ａの外周面に接している第１の開口部１２ａに斜めに傾斜させたトーチ２０１先端の溶接棒２０２を近接させ、アーク溶接を行なう。その後、図３に示すように第２のガイドパイプ２１ｂを第２の開口部１２ｂに挿入し、トーチ２０１を第２のガイドパイプ２１ｂの軸方向に平行にして、つば部２２ｂの外縁に溶接棒２０２を近接させアーク溶接を行なう。ここで、つば部２２ｂ外縁から根元までの距離が、第１、第２のガイドパイプ２１ａ、２１ｂの外周面間の距離の略１／２であり、トーチ２０１の直径が第１、第２のガイドパイプ２１ａ、２１ｂの外周面間の距離未満であるため、溶接棒を第１、第２のガイドパイプ２１ａ、２１ｂに平行に保ったままアーク溶接可能となり、第２のガイドパイプ２１ｂの溶接を良好にすることができる。特に、第１、第２のガイドパイプ２１ａ、２１ｂの間隔をアーク溶接のトーチに最も近接する部分においても良好な溶接状態とすることができる。   As shown in FIG. 2, a welding rod 202 at the tip of a torch 201 inclined obliquely to the first opening 12a that is in contact with the outer peripheral surface of the first guide pipe 21a inserted into the first opening 12a. Proximity to arc welding. Thereafter, as shown in FIG. 3, the second guide pipe 21b is inserted into the second opening 12b, the torch 201 is parallel to the axial direction of the second guide pipe 21b, and a welding rod is attached to the outer edge of the collar portion 22b. Arc welding is performed with 202 close to each other. Here, the distance from the outer edge of the collar portion 22b to the base is approximately ½ of the distance between the outer peripheral surfaces of the first and second guide pipes 21a and 21b, and the diameter of the torch 201 is the first and second Since it is less than the distance between the outer peripheral surfaces of the guide pipes 21a and 21b, arc welding can be performed while the welding rod is kept parallel to the first and second guide pipes 21a and 21b, and welding of the second guide pipe 21b is performed. Can be good. In particular, the distance between the first and second guide pipes 21a and 21b can be in a good welding state even at a portion closest to the arc welding torch.

このため、圧縮機構部３の中間仕切り板２は、トーチ２０１の直径以上の厚さを有しており、第１、第２のシリンダ６Ａ、６Ｂの間隔が設定されている。   For this reason, the intermediate partition plate 2 of the compression mechanism section 3 has a thickness equal to or larger than the diameter of the torch 201, and the interval between the first and second cylinders 6A and 6B is set.

上記のように第１、第２のガイドパイプ２１ａ、２１ｂが接合された本体部１１Ａの内部下方に圧縮機構部３が配置される。第１の開口部１２ａ及び第１のガイドパイプ２１ａが第１のシリンダ６Ａの貫通孔２０ａに連通し、第２の開口部１２ｂ及び第１のガイドパイプ２１ｂが第２のシリンダ６Ｂの貫通孔２０ｂに連通するように配置される。
そして、第１、第２のガイドパイプ２１ａ、２１ｂにはテーパーパイプ２３ａ 、２３ｂが挿入され、貫通孔２０ａ、２０ｂにテーパーパイプ２３ａ 、２３ｂが挿通される、圧縮機構部３が一時的に本体部１１Ａ内に仮留めされた状態となる。そして、本体部１１Ａの外周側からアークスポット溶接により、圧縮機構部３を本体部１１Ａの内周面に固着させる。 As described above, the compression mechanism portion 3 is disposed below the inside of the main body portion 11A to which the first and second guide pipes 21a and 21b are joined. The first opening 12a and the first guide pipe 21a communicate with the through hole 20a of the first cylinder 6A, and the second opening 12b and the first guide pipe 21b are the through hole 20b of the second cylinder 6B. It arrange | positions so that it may communicate with.
The taper pipes 23a and 23b are inserted into the first and second guide pipes 21a and 21b, and the taper pipes 23a and 23b are inserted into the through holes 20a and 20b. It will be in the state temporarily attached in 11A. Then, the compression mechanism 3 is fixed to the inner peripheral surface of the main body 11A by arc spot welding from the outer peripheral side of the main body 11A.

上記のように入熱量の少ないアーク溶接により第１、第２のガイドパイプ２１ａ、２１ｂを本体部１１Ａに溶接することで、熱変形量が小さく溶接不良の少ない本体部１１Ａを効率よく製造することができ、本体部１１Ａの内周面にアークスポット溶接される圧縮機構部３を歪みなく固定することができる。   As described above, the first and second guide pipes 21a and 21b are welded to the main body portion 11A by arc welding with a small amount of heat input, thereby efficiently producing the main body portion 11A with a small amount of thermal deformation and few welding defects. The compression mechanism 3 that is arc spot welded to the inner peripheral surface of the main body 11A can be fixed without distortion.

さらに、第２のガイドパイプ２１ｂがつば部２２ｂにより密閉ケース１１に溶接されることによって第２のガイドパイプ２１ｂの強度を高くすることができ、密閉ケース１１内が高圧となる圧縮機１の運転時においても第２のガイドパイプ２１ｂの破損を防止することができ、信頼性の高い圧縮機１を得ることができる。   Further, the second guide pipe 21b is welded to the sealed case 11 by the flange portion 22b, whereby the strength of the second guide pipe 21b can be increased, and the compressor 1 is operated at a high pressure inside the sealed case 11. Even at times, the breakage of the second guide pipe 21b can be prevented, and the highly reliable compressor 1 can be obtained.

また、第２のガイドパイプ２１ｂは、つば部２２ｂを密閉ケース１１に溶接されることで、第１のガイドパイプ２１ａのようにガイドパイプの外周面を直接密閉ケース１１の外周面に溶接される場合に比べて強度が高く、図４に示すように、第１のガイドパイプ２１ａと比較して、管壁の肉厚を薄くした場合でも必要な強度を有し、圧縮機１内部が高圧となる運転状態でも第２のガイドパイプ２１ｂが破損することなく、信頼性の高い圧縮機１を提供することができる。   Further, the second guide pipe 21b is welded to the outer peripheral surface of the sealed case 11 directly like the first guide pipe 21a by welding the collar portion 22b to the sealed case 11. Compared to the first guide pipe 21a, as shown in FIG. 4, it has the required strength even when the wall thickness of the pipe wall is reduced, and the compressor 1 has a high pressure. The highly reliable compressor 1 can be provided without the second guide pipe 21b being damaged even in the operating state.

図１に示すように、密閉ケース１１の蓋部１１Ｂには、冷媒配管１９が接続された吐出口２６が設けられている。冷媒配管１９は、凝縮器１５と、膨張装置１６と、蒸発器１７を介してアキュームレータ１８に接続され、さらにアキュームレータ１８から圧縮機１に接続されることで、冷凍サイクル装置１００が構成される。
圧縮機１に電力が供給され、冷凍サイクル装置１００が運転すると、アキュームレータ１８内に貯留された冷媒が、冷媒配管１９を介して、密閉ケース１１内の第１、第２のシリンダ６Ａ、６Ｂのシリンダ室Ｓａ、Ｓｂ内に流入する。そして、第１、第２のローラ９ａ、９ｂの偏心回転により、冷媒が圧縮されつつ第１、第２のシリンダ室９ａ、９ｂ内を移動し、高圧ガス状態の冷媒が吐出側から密閉ケース１１内へ吐出される。
密閉ケース１１内に充満した高圧ガス状態の冷媒は、上端に接続された吐出管から冷媒配管１９を介して、凝縮器１５へ流入する。
密閉ケース１１から冷媒配管１９を介して吐出される高圧ガスは、凝縮器１５で外気もしくは水と熱交換して凝縮液化し、膨張装置１６で断熱膨張し、蒸発器１７で熱交換空気から蒸発潜熱を奪って冷凍作用をなす。
そして、蒸発したあとの冷媒はアキュームレータ１８に導かれて気液分離され、再び各吸込み冷媒管Ｐａ，Ｐｂから２気筒回転式圧縮機Ｒにおける第１のシリンダ室Ｓａと第２のシリンダ室Ｓｂ２に吸込まれて、上述の作用がなされ、上述の経路を循環する。 As shown in FIG. 1, the lid portion 11 </ b> B of the sealed case 11 is provided with a discharge port 26 to which a refrigerant pipe 19 is connected. The refrigerant pipe 19 is connected to the accumulator 18 via the condenser 15, the expansion device 16, and the evaporator 17, and further connected to the compressor 1 from the accumulator 18, thereby configuring the refrigeration cycle apparatus 100.
When electric power is supplied to the compressor 1 and the refrigeration cycle apparatus 100 is operated, the refrigerant stored in the accumulator 18 passes through the refrigerant pipe 19 to the first and second cylinders 6A and 6B in the sealed case 11. It flows into the cylinder chambers Sa and Sb. Then, due to the eccentric rotation of the first and second rollers 9a and 9b, the refrigerant moves in the first and second cylinder chambers 9a and 9b while being compressed, and the refrigerant in the high-pressure gas state is sealed from the discharge side to the sealed case 11. It is discharged into the inside.
The refrigerant in the high pressure gas state filled in the sealed case 11 flows into the condenser 15 through the refrigerant pipe 19 from the discharge pipe connected to the upper end.
The high pressure gas discharged from the sealed case 11 through the refrigerant pipe 19 is condensed and liquefied by exchanging heat with the outside air or water in the condenser 15, adiabatically expanded in the expansion device 16, and evaporated from the heat exchange air in the evaporator 17. Takes out latent heat and freezes.
Then, the evaporated refrigerant is guided to the accumulator 18 and separated into gas and liquid, and again from the suction refrigerant pipes Pa and Pb to the first cylinder chamber Sa and the second cylinder chamber Sb2 in the two-cylinder rotary compressor R. Inhaled, the above-mentioned action is performed, and the above-mentioned route is circulated.

（第２の実施形態）
第２の実施形態の圧縮機１は、第１の圧縮機１と略同一の構成を有しており、異なる構成として、第１のガイドパイプ２１ｃを有している。図５に示すように、本第２の実施形態における第１のガイドパイプ２１ｃは、第２のガイドパイプ２１ｂと同様に、ガイドパイプの一端側中途部外周面に、半径方向外方へ突出したつば部２２ｃが全周に亘り形成されている。この第１のガイドパイプ２１ｃの一端は、第１の開口部１２ａへ挿入されており、つば部２２ｃは第２のガイドパイプ２１ｂのつば部２２ｂ同様に、本体部１１Ａ外側に接している。
つば部２２ｃの外縁とつば部２２ｂに外縁とは数ｍｍ程度の間隙を有して配置されており、アーク溶接により本体部１１Ａに固着されている。 (Second Embodiment)
The compressor 1 of 2nd Embodiment has the structure substantially the same as the 1st compressor 1, and has the 1st guide pipe 21c as a different structure. As shown in FIG. 5, the first guide pipe 21c in the second embodiment protrudes outward in the radial direction on the outer peripheral surface at one end side of the guide pipe, similarly to the second guide pipe 21b. A collar portion 22c is formed over the entire circumference. One end of the first guide pipe 21c is inserted into the first opening 12a, and the collar 22c is in contact with the outside of the main body 11A, like the collar 22b of the second guide pipe 21b.
The outer edge of the collar portion 22c and the outer edge of the collar portion 22b are arranged with a gap of about several mm, and are fixed to the main body portion 11A by arc welding.

（第１の製造方法）
上記のように構成された圧縮機１は、製造過程の初期段階において本体部１１Ａの開口部１２ａ 、１２ｂに第１、第２のガイドパイプ２１ｃ、２１ｂがアーク溶接により接合される。 (First manufacturing method)
In the compressor 1 configured as described above, the first and second guide pipes 21c and 21b are joined to the openings 12a and 12b of the main body 11A by arc welding in the initial stage of the manufacturing process.

第２の実施形態の圧縮機１は、図５のように、第１のガイドパイプ２１ｃのつば部２２ｃの外縁、及び、第２のガイドパイプ２１ｂのつば部２２ｂの外縁に溶接棒２０２を近接させ、アーク溶接を行なう。
本体部１１Ａに第１のガイドパイプ２１ｃを挿入し、溶接装置の溶接棒２０２をつば部２２ｃに近接させ、外縁全周をアーク溶接する。その後、第２のガイドパイプ２１ｂを第２の開口部１２ｂに挿入し、第２のガイドパイプ２１ｂのつば部２２ｂに溶接棒２０２を近接させ外縁全周をアーク溶接する。このとき、つば部２２ｃの外縁からつば部２２ｂの外縁は数ｍｍしか離れていないため、溶接棒２０２を第１、第２のガイドパイプ２１ｃ、２１ｂに平行に保ったままアーク溶接を行なう際に、つば部２２ｃ、２２ｂの外縁の最も近接する部分において溶接部分が重なり溶接金属を共有することでより強固な接合状態とすることができる。 As shown in FIG. 5, the compressor 1 of the second embodiment places the welding rod 202 close to the outer edge of the flange portion 22 c of the first guide pipe 21 c and the outer edge of the flange portion 22 b of the second guide pipe 21 b. And arc welding.
The first guide pipe 21c is inserted into the main body part 11A, the welding rod 202 of the welding apparatus is brought close to the collar part 22c, and the entire outer edge is arc welded. Thereafter, the second guide pipe 21b is inserted into the second opening 12b, the welding rod 202 is brought close to the flange portion 22b of the second guide pipe 21b, and the entire outer periphery is arc-welded. At this time, since the outer edge of the collar portion 22b is only a few millimeters away from the outer edge of the collar portion 22c, the arc welding is performed with the welding rod 202 kept parallel to the first and second guide pipes 21c and 21b. The welded portion overlaps and shares the weld metal in the closest portion of the outer edge of the collar portions 22c and 22b, thereby making it possible to obtain a stronger joined state.

（第２の製造方法）
上記第１の製造方法では、第１のガイドパイプ２１ｃをアーク溶接した後に、第２のガイドパイプ２１ｂを第２の開口部１２ｂに挿入し、アーク溶接したが、第１、第２のガイドパイプ２１ｃ、２１ｂを第１、第２の開口部１２ａ、１２ｂに挿入した後に、第１、第２のガイドパイプ２１ｃ、２１ｂのつば部２２ｃ、２２ｂを連続してアーク溶接しても良い。
例えば、図６の実線矢印で示すように、８の字状に連続して溶接する。このようにアーク溶接の作業工程を第１、第２のガイドパイプ２１ｃ、２１ｂとで分けることなく一度に連続して行なうことで、作業工程を削減し製造コスト低減することができる。また、つば部２２ｃ、２２ｂが最も近接している部分において溶接金属を共有することにより強固な溶接状態とすることができる。
上記の例では、８の字状にアーク溶接する場合について述べたが、これに限らず第１、第２のガイドパイプ２１ｃ、２１ｂを連続してアーク溶接して良い。 (Second manufacturing method)
In the first manufacturing method, after arc welding the first guide pipe 21c, the second guide pipe 21b is inserted into the second opening 12b and arc-welded, but the first and second guide pipes are used. After inserting 21c and 21b into the first and second openings 12a and 12b, the flange portions 22c and 22b of the first and second guide pipes 21c and 21b may be arc-welded continuously.
For example, as indicated by solid line arrows in FIG. Thus, the work process of arc welding is continuously performed at once without being divided between the first and second guide pipes 21c and 21b, so that the work process can be reduced and the manufacturing cost can be reduced. Moreover, it can be set as a strong welding state by sharing a weld metal in the part which the collar parts 22c and 22b adjoin most.
In the above example, the case of arc welding in the shape of a figure 8 has been described. However, the present invention is not limited to this, and the first and second guide pipes 21c and 21b may be arc-welded continuously.

本発明は、上記実施形態に限定されない。例えば、第１、第２の実施形態においてガイドパイプは銅製でなく鉄製を用いてもよい。さらに、本発明の実施の形態に開示されている複数の構成要素を適宜組み合わせることにより種々の発明を形成できる。例えば、本発明の実施の形態に示される全構成要素から幾つかの構成要素を削除してもよい。更に、異なる実施の形態に亘る構成要素を適宜組み合わせてもよい。   The present invention is not limited to the above embodiment. For example, in the first and second embodiments, the guide pipe may be made of iron instead of copper. Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments of the present invention. For example, you may delete some components from all the components shown by embodiment of this invention. Furthermore, you may combine the component covering different embodiment suitably.

１…圧縮機、１１…密閉ケース、３…圧縮機構部、４…電動機、５…回転軸、２…中間仕切り板、１２ａ…第１の開口部、１２ｂ…第２の開口部、２１ａ…第１のガイドパイプ、２１ｂ…第２のガイドパイプ、２２ｂ、２２ｃ…つば部、１００…冷凍サイクル装置、２０１…トーチ、２０２…溶接棒 DESCRIPTION OF SYMBOLS 1 ... Compressor, 11 ... Sealing case, 3 ... Compression mechanism part, 4 ... Electric motor, 5 ... Rotating shaft, 2 ... Intermediate partition plate, 12a ... 1st opening part, 12b ... 2nd opening part, 21a ... 1st 1 guide pipe, 21b ... 2nd guide pipe, 22b, 22c ... collar part, 100 ... refrigeration cycle apparatus, 201 ... torch, 202 ... welding rod

Claims (6)

ケースと前記ケースの外面に隣接して設けられた複数の管とを有する圧縮機において、
前記複数の管のうち少なくとも一つの管には、管の外周面から半径方向外方に突出したつば部を備えており、
前記つば部が前記ケースにアーク溶接されていることを特徴とする圧縮機。 In the compressor having a case and a plurality of pipes provided adjacent to the outer surface of the case,
At least one of the plurality of tubes includes a flange portion protruding radially outward from the outer peripheral surface of the tube,
The compressor characterized in that the collar portion is arc welded to the case. 前記つば部の外縁から根元までの距離が、隣合う２つの管の外周面間の距離の１／２以下であり、
前記つば部が前記ケースに溶接されていることを特徴とする請求項１に記載の圧縮機。 The distance from the outer edge of the collar portion to the base is not more than ½ of the distance between the outer peripheral surfaces of two adjacent tubes;
The compressor according to claim 1, wherein the collar portion is welded to the case. 前記複数の管が、前記つば部を備えていない管と、前記つば部を備えた管を有しており、
前記つば部を備えていない管の肉厚よりも、前記つば部を備えた管の肉厚が薄いことを特徴とする請求項１に記載の圧縮機。 The plurality of pipes include a pipe not provided with the collar part and a pipe provided with the collar part,
The compressor according to claim 1, wherein the thickness of the pipe provided with the collar portion is smaller than the thickness of the pipe not provided with the collar portion. ケースの外面に隣接して設けられた第１の管及び第２の管を有する圧縮機の製造方法において、
前記第２の管は、外周面から半径方向外方に突出したつば部を備えており、
前記ケースに設けられた第１の開口部に第１の管を挿入して、アーク溶接した後に、前記第１の開口部に隣設する第２の開口部へ第２の管を挿入し、アーク溶接することを特徴とする圧縮機の製造方法。 In a method for manufacturing a compressor having a first pipe and a second pipe provided adjacent to an outer surface of a case,
The second pipe includes a collar portion protruding radially outward from the outer peripheral surface;
After inserting the first tube into the first opening provided in the case and arc welding, the second tube is inserted into the second opening adjacent to the first opening, A method for manufacturing a compressor, characterized by arc welding. ケースの外面に隣接して設けられた第１の管及び第２の管を有する圧縮機の製造方法において、
前記第１の管及び第２の管は、外周面から半径方向外方に突出したつば部を有しており、
前記ケースに設けられた第１の開口部に第１の管を挿入し、前記第１の開口部に隣設する第２の開口部へ第２の管を挿入した後に、
前記第１の管及び第２の管をアーク溶接することを特徴とする圧縮機の製造方法。 In a method for manufacturing a compressor having a first pipe and a second pipe provided adjacent to an outer surface of a case,
The first pipe and the second pipe have a flange portion protruding radially outward from the outer peripheral surface;
After inserting the first tube into the first opening provided in the case and inserting the second tube into the second opening adjacent to the first opening,
A method for manufacturing a compressor, comprising arc welding the first pipe and the second pipe. 請求項１乃至３に記載の圧縮機を備えたことを特徴とする冷凍サイクル装置。   A refrigeration cycle apparatus comprising the compressor according to claim 1.
JP2011122989A 2011-06-01 2011-06-01 Compressor, method of manufacturing compressor and refrigerating cycle device Withdrawn JP2012251445A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014240626A (en) * 2013-06-12 2014-12-25 日立アプライアンス株式会社 Hermetic electric compressor
WO2022092290A1 (en) * 2020-10-30 2022-05-05 ダイキン工業株式会社 Rotary compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014240626A (en) * 2013-06-12 2014-12-25 日立アプライアンス株式会社 Hermetic electric compressor
WO2022092290A1 (en) * 2020-10-30 2022-05-05 ダイキン工業株式会社 Rotary compressor
JP2022072831A (en) * 2020-10-30 2022-05-17 ダイキン工業株式会社 Rotary type compressor
JP7206506B2 (en) 2020-10-30 2023-01-18 ダイキン工業株式会社 rotary compressor
US11965678B2 (en) 2020-10-30 2024-04-23 Daikin Industries, Ltd. Rotary compressor

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