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JP3747544B2 - Assembling method of suction pipe and welding jig for hermetic compressor - Google Patents
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JP3747544B2 - Assembling method of suction pipe and welding jig for hermetic compressor - Google Patents

Assembling method of suction pipe and welding jig for hermetic compressor Download PDF

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Publication number
JP3747544B2
JP3747544B2 JP00051497A JP51497A JP3747544B2 JP 3747544 B2 JP3747544 B2 JP 3747544B2 JP 00051497 A JP00051497 A JP 00051497A JP 51497 A JP51497 A JP 51497A JP 3747544 B2 JP3747544 B2 JP 3747544B2
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JP
Japan
Prior art keywords
welding
suction
casing
welding jig
connection pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP00051497A
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Japanese (ja)
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JPH10196571A (en
Inventor
伸泰 五百井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP00051497A priority Critical patent/JP3747544B2/en
Publication of JPH10196571A publication Critical patent/JPH10196571A/en
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Publication of JP3747544B2 publication Critical patent/JP3747544B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、密閉型圧縮機の吸入接続管とケーシング部及び吸入配管の溶接組立方法および溶接治具に関するものである。
【０００２】
【従来の技術】
従来、圧縮機の吸入配管溶接方法は、図３に示すように、固定子１，回転子２，クランクシャフト３，主軸受け４，ポンプ部５，吸入配管６，ケーシング部７及び吸入接続管８にて構成され、吸入接続管８にて吸入配管６とポンプ部５を接続し、ケーシング部７及び吸入配管６各内部の機密性を確保するために吸入接続管８と、吸入配管６及びケーシング部７を同時にロー付け溶接にてシーリングしている。このとき溶接加熱方向は図３中のＡに示す方向、即ち吸入配管６側からポンプ部５方向である。また、ポンプ部５はケーシング部７に対して点Ｂにて溶接固定されている。
【０００３】
【発明が解決しようとする課題】
ところがこの方法では、溶接時の熱が吸入接続管８に伝わりやすく、吸入接続管８とケーシング部７の熱膨張によりポンプ部５の吸入側が点Ｂを支店にして固定子１方向に回転移動し、ポンプ部５に直結している回転子２と固定子１とのエアーギャップ量が変化してしまい、起動不良を起こすなどの問題があった。
【０００４】
本発明は上記従来の課題を解消するもので、吸入接続管８へ伝わる熱量を制御してやることにより吸入接続管８およびケーシング部７の熱膨張によるポンプ部５及び回転子２の移動量を最小限に止め、エアーギャップ不良による起動不良の発生を押えるとを目的とするものである。
【０００５】
【課題を解決するための手段】
上記課題を解決するために本発明は、固定子１，回転子２，クランクシャフト３，主軸受け４，ポンプ部５，吸入配管６，ケーシング部７，吸入接続管８にて構成される密閉型圧縮機の組立工程において、図２に示す放熱プレート９，輻射熱反射プレート１０，クランプベース１１ａ，１１ｂ、スプリング１２にて構成される溶接治具１３をポンプ部５の吸入口に挿入された吸入接続管８とケーシング部７及び吸入配管６を溶接にて固定する際に、溶接部位から数ミリメートル程ポンプ部５寄りのケーシング部に装着した後に溶接を行うものである。
【０００６】
【発明の実施の形態】
請求項１の発明は、熱伝導性の高い材料を用いた溶接治具を溶接部近傍の吸入接続管又はケーシング部に接触させて溶接する組立方法において、溶接治具の溶接部に近接する側を反射板とし、かつ比較的熱伝導の低い材料ともので、溶接時に発生する輻射熱を遮断し、溶接治具１３の放熱プレート９の温度を常に低く保ち、溶接部分の放熱効果を高めることにより吸入接続管８及びケーシング部７の熱膨張によるポンプ部５及び回転子２の移動量を最小限に止め、エアーギャップ不良による起動不良の発生を押さえることを得る。
【０００８】
請求項２は請求項１に用いる溶接治具の具体的形態を示したものである。
【０００９】
【実施例】
以下、本発明の一実施例について図１及び図２を参考に説明する。
【００１０】
図１の１は固定子，２は回転子，３はクランクシャフト，４は主軸受け，５はポンプ部，６は吸入配管，７はケーシング部，８は吸入接続管，１３は銅を用いかつ溶接時の輻射熱が直接銅部分に伝わらないように断熱性の高い材料で覆われた溶接治具である。溶接治具１３の構造を図２に示す。図２において、９は銅で出来た放熱プレート、１０は石綿等の断熱材で出来た輻射熱反射プレート、１１ａ，１１ｂはクランプベース、１２は放熱プレート９をケーシング部７にクランプさせた状態で保持しておくためのスプリングである。
【００１１】
図１において回転子２はクランクシャフト３を介してポンプ部５の主軸受け４に片持ちにて支持されており、ポンプ部５の吸入口に挿入された吸入接続管８とケーシング部７及び吸入配管６を溶接にて固定する際に、溶接部位から数ミリメートル程ポンプ部５寄りのケーシング部７に溶接治具１３を装着した後に溶接を実施すると、吸入接続管８及びケーシング部７に伝わる熱量を押さえることができ、吸入接続管８とケーシング部７の熱膨張が押さえられ、ポンプ部５及びポンプ部５に連結される回転子２の移動量も減り、エアーギャップ不良を低減させることが可能となる。又、溶接治具１３の放熱量が多すぎて溶接不良を引き起こす場合は溶接治具の被溶接部への接触面積を最適化することにより良好な溶接性とエアーギャップ不良低減とを同時に実現することができる。又、溶接治具１３を熱伝導性の低い材質にて輻射熱が当たる部分を覆う構造にしたことにより溶接時に発生する輻射熱を遮断し、溶接治具１３の温度を常に低く保ち、放熱プレート９の放熱効果を高め、又、放熱プレート９自体の酸化による劣化を防ぐことを得る。
【００１２】
【発明の効果】
この発明によって、密閉型圧縮機の吸入配管の組立時において、溶接部分からポンプ部５方向とケーシング部７方向へ伝わる熱を溶接治具１３を装着することにより遮断し、吸入接続管８及びケーシング部７の熱膨張によるポンプ部５及び回転子２の移動量を最小限に止め、エアーギャップ不良による起動不良の発生を押さえることができ、組立時の不良率が低減でき、信頼性の高い密閉型圧縮機を提供できる。
【図面の簡単な説明】
【図１】本発明の１実施例を示す圧縮機吸入配管溶接部分の断面図
【図２】（ａ）は本発明の１実施例を示す溶接治具外観正面図
（ｂ）は同側面図
【図３】従来の圧縮機吸入配管溶接部分の断面図
【符号の説明】
１ 固定子
２ 回転子
３ クランクシャフト
４ 主軸受け
５ ポンプ部
６ 吸入配管
７ ケーシング部
８ 吸入接続管
９ 放熱プレート
１０ 輻射熱反射プレート
１１ａ，１１ｂ クランプベース
１２ スプリング
１３ 溶接治具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a welding assembly method and a welding jig for a suction connection pipe, a casing portion, and a suction pipe of a hermetic compressor.
[0002]
[Prior art]
Conventionally, as shown in FIG. 3, the compressor suction pipe welding method includes a stator 1, a rotor 2, a crankshaft 3, a main bearing 4, a pump part 5, a suction pipe 6, a casing part 7, and a suction connection pipe 8. The suction pipe 6 and the pump section 5 are connected by the suction connection pipe 8, and the suction connection pipe 8, the suction pipe 6, and the casing are secured in order to ensure confidentiality inside the casing section 7 and the suction pipe 6. The part 7 is simultaneously sealed by brazing welding. At this time, the welding heating direction is the direction indicated by A in FIG. 3, that is, the direction from the suction pipe 6 to the pump portion 5. The pump unit 5 is fixed by welding to the casing unit 7 at point B.
[0003]
[Problems to be solved by the invention]
However, in this method, heat at the time of welding is easily transmitted to the suction connection pipe 8, and the suction side of the pump part 5 rotates and moves in the direction of the stator 1 with the point B as a branch due to thermal expansion of the suction connection pipe 8 and the casing part 7. The air gap amount between the rotor 2 and the stator 1 directly connected to the pump unit 5 is changed, which causes a problem of starting failure.
[0004]
The present invention solves the above-mentioned conventional problems, and by controlling the amount of heat transmitted to the suction connection pipe 8, the amount of movement of the pump part 5 and the rotor 2 due to the thermal expansion of the suction connection pipe 8 and the casing part 7 is minimized. The purpose is to suppress the start-up failure due to the air gap failure.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is a sealed type comprising a stator 1, a rotor 2, a crankshaft 3, a main bearing 4, a pump part 5, a suction pipe 6, a casing part 7 and a suction connection pipe 8. In the compressor assembly process, a suction connection in which a welding jig 13 including a heat radiating plate 9, a radiant heat reflecting plate 10, clamp bases 11a and 11b, and a spring 12 shown in FIG. When the pipe 8, the casing part 7, and the suction pipe 6 are fixed by welding, welding is performed after being attached to the casing part near the pump part 5 by several millimeters from the welded part.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 is an assembly method in which a welding jig using a material having high thermal conductivity is brought into contact with a suction connection pipe or a casing part in the vicinity of the welding part and welded , and the welding jig is close to the welding part. As a reflector and a material with relatively low heat conduction, the radiation heat generated during welding is cut off, the temperature of the heat dissipating plate 9 of the welding jig 13 is kept low, and the heat dissipation effect of the welded part is enhanced. It is possible to minimize the amount of movement of the pump unit 5 and the rotor 2 due to the thermal expansion of the connecting pipe 8 and the casing unit 7, and to suppress the occurrence of startup failure due to an air gap failure.
[0008]
The second aspect shows a specific form of the welding jig used in the first aspect.
[0009]
【Example】
An embodiment of the present invention will be described below with reference to FIGS.
[0010]
1, 1 is a stator, 2 is a rotor, 3 is a crankshaft, 4 is a main bearing, 5 is a pump part, 6 is a suction pipe, 7 is a casing part, 8 is a suction connection pipe, 13 is copper and This welding jig is covered with a highly heat-insulating material so that radiant heat during welding is not directly transmitted to the copper portion. The structure of the welding jig 13 is shown in FIG. In FIG. 2, 9 is a heat radiating plate made of copper, 10 is a radiant heat reflecting plate made of a heat insulating material such as asbestos, 11a and 11b are clamp bases, and 12 is a state in which the heat radiating plate 9 is clamped to the casing portion 7 It is a spring to keep.
[0011]
In FIG. 1, the rotor 2 is supported in a cantilever manner on a main bearing 4 of a pump unit 5 via a crankshaft 3, and a suction connection pipe 8, a casing unit 7, and a suction unit inserted into the suction port of the pump unit 5. When the pipe 6 is fixed by welding, if welding is performed after the welding jig 13 is attached to the casing part 7 near the pump part 5 by several millimeters from the welded part, the amount of heat transmitted to the suction connection pipe 8 and the casing part 7 It is possible to suppress the thermal expansion of the suction connection pipe 8 and the casing part 7, reduce the amount of movement of the pump part 5 and the rotor 2 connected to the pump part 5, and reduce the air gap defect. It becomes. In addition, when the heat radiation amount of the welding jig 13 is too large to cause poor welding, the welding area of the welding jig to the welded part is optimized to simultaneously achieve good weldability and reduce the air gap defect. be able to. Further, the welding jig 13 is made of a material having a low thermal conductivity so as to cover the portion where the radiant heat hits, thereby blocking the radiant heat generated during welding, keeping the temperature of the welding jig 13 constantly low, It is possible to enhance the heat dissipation effect and prevent deterioration of the heat dissipation plate 9 itself due to oxidation.
[0012]
【The invention's effect】
According to the present invention, when the suction pipe of the hermetic compressor is assembled, the heat transmitted from the welded portion toward the pump portion 5 and the casing portion 7 is blocked by attaching the welding jig 13, and the suction connection pipe 8 and the casing are cut off. The amount of movement of the pump unit 5 and the rotor 2 due to the thermal expansion of the unit 7 can be minimized, the start-up failure due to the air gap failure can be suppressed, the failure rate during assembly can be reduced, and the sealing is highly reliable A mold compressor can be provided.
[Brief description of the drawings]
FIG. 1 is a sectional view of a compressor suction pipe welded portion showing an embodiment of the present invention. FIG. 2 (a) is a front view of the appearance of a welding jig showing an embodiment of the present invention. FIG. 3 is a cross-sectional view of a conventional welded part of the compressor suction pipe.
DESCRIPTION OF SYMBOLS 1 Stator 2 Rotor 3 Crankshaft 4 Main bearing 5 Pump part 6 Suction piping 7 Casing part 8 Suction connection pipe 9 Radiation plate 10 Radiation heat reflection plates 11a and 11b Clamp base 12 Spring 13 Welding jig

Claims (2)

ケーシング内部に電動機とポンプ部を収納し、前記電動機の回転子がポンプ部のクランクシャフトを介して、前記ポンプ部の主軸受けに片持ちにて支持され、前記ポンプ部に吸入接続管を介して吸入管が接続され、前記ケーシング部、前記吸入接続管及び前記吸入管が溶接にて密封固定される高圧型の密閉型圧縮機において、溶接部に近接する側を輻射熱が反射する表面性状をもち、比較的熱伝導性が低い材料とし、ワークに接触させる部分を熱伝導性の高い材料とした溶接治具を溶接部近傍の吸入接続管又はケーシング部に接触させて溶接する密閉型圧縮機の吸入配管組立方法。  An electric motor and a pump unit are housed inside the casing, and a rotor of the electric motor is supported by a main bearing of the pump unit via a crankshaft of the pump unit, and is connected to the pump unit via a suction connection pipe. In a high-pressure hermetic compressor to which a suction pipe is connected and the casing, the suction connection pipe, and the suction pipe are hermetically fixed by welding, the compressor has a surface property that radiant heat reflects on the side close to the weld. Of a hermetic compressor that welds a welding jig made of a material having a relatively low thermal conductivity and a portion that contacts the workpiece having a high thermal conductivity in contact with a suction connection pipe or casing near the welded portion. Intake piping assembly method. ワークに接触させる部分を半円状の孔を持つ熱伝導性の高い材料でできた一対の放熱プレートとし、その片面又は両面に半円状の輻射熱が反射する表面性状をもち、前記放熱プレートより熱伝導性が低い材料とした一対の輻射熱反射プレートを取り付け、前記放熱プレートを開閉クランプできる構造とした溶接治具。  The part that comes into contact with the workpiece is a pair of heat radiating plates made of a highly heat conductive material having a semicircular hole, and has a surface property that reflects the semicircular radiant heat on one or both sides of the heat radiating plate. A welding jig having a structure in which a pair of radiant heat reflecting plates made of a material having low thermal conductivity is attached and the heat radiating plate can be clamped open and close.
JP00051497A 1997-01-07 1997-01-07 Assembling method of suction pipe and welding jig for hermetic compressor Expired - Fee Related JP3747544B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP00051497A JP3747544B2 (en) 1997-01-07 1997-01-07 Assembling method of suction pipe and welding jig for hermetic compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00051497A JP3747544B2 (en) 1997-01-07 1997-01-07 Assembling method of suction pipe and welding jig for hermetic compressor

Publications (2)

Publication Number Publication Date
JPH10196571A JPH10196571A (en) 1998-07-31
JP3747544B2 true JP3747544B2 (en) 2006-02-22

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* Cited by examiner, † Cited by third party
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CN106481560A (en) * 2015-08-31 2017-03-08 珠海格力节能环保制冷技术研究中心有限公司 Air-conditioner and its compressor

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