JPH1113671A - Closed compressor - Google Patents
Closed compressorInfo
- Publication number
- JPH1113671A JPH1113671A JP17342797A JP17342797A JPH1113671A JP H1113671 A JPH1113671 A JP H1113671A JP 17342797 A JP17342797 A JP 17342797A JP 17342797 A JP17342797 A JP 17342797A JP H1113671 A JPH1113671 A JP H1113671A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- copper
- connection pipe
- suction
- hermetic compressor
- 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.)
- Granted
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷凍機、空調機な
どに使用される密閉型圧縮機に関するもので、特に密閉
容器に接続する接続管に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic compressor used for a refrigerator, an air conditioner and the like, and more particularly to a connecting pipe connected to a hermetic container.
【０００２】[0002]
【従来の技術】従来この種の密閉型圧縮機は図５に示す
ように密閉容器１０１の内部に電動機部１０２と圧縮機
構部１０３を収納している。密閉容器１０１には冷媒ガ
スを吸い込む吸い込み管１０４と圧縮した冷媒ガスを吐
き出す吐き出し管１０５が取り付けられ、それぞれ蒸発
器（図示せず）、凝縮器（図示せず）に接続され、いわ
ゆる冷凍サイクルを構成する。従来これら吸い込み管１
０４、吐き出し管１０５は銅管でできており、蒸発器、
凝縮器と結ぶ銅配管と容易に銅ロー付けで接続可能な材
質が選定されていた。これら吸い込み管１０４、吐き出
し管１０５を密閉容器１０１への密封接続は密閉容器が
一般に鋼製であるためフラックスを用いた銀ロー付けで
行うのが一般的であった。2. Description of the Related Art Conventionally, this type of hermetic compressor has an electric motor section 102 and a compression mechanism section 103 housed in an airtight container 101 as shown in FIG. The closed vessel 101 is provided with a suction pipe 104 for sucking the refrigerant gas and a discharge pipe 105 for discharging the compressed refrigerant gas, which are connected to an evaporator (not shown) and a condenser (not shown), respectively. Constitute. Conventionally, these suction pipes 1
04, the discharge pipe 105 is made of a copper pipe,
A material that can be easily connected to the copper pipe connected to the condenser by copper brazing was selected. Sealing connection of the suction pipe 104 and the discharge pipe 105 to the closed vessel 101 is generally performed by silver brazing using a flux because the closed vessel is generally made of steel.
【０００３】また、密閉容器１０１の外部から直接圧縮
機構部１０３に冷媒ガスを吸い込む吸い込み管１０４の
構成は図８に示すような構成をとっている。圧縮機構部
１０３に設けられた吸い込み孔１０６と同じ位置に、密
閉容器１０１には穴が開けられ、そこに吸入外管１０７
が取り付けられている。圧縮機構部１０３に設けられた
吸入孔１０６の入り口は吸入孔１０６よりやや大きな孔
である接続管挿入孔１０８が開けられている。この接続
管挿入孔１０８には吸入接続管１０９が密閉容器１０１
の外部から圧入され、密閉容器１０１の内部の吐出高圧
と吸入低圧をシールする。吸入接続管１０７の逆側端面
は密閉容器１０１に取り付けられた吸入外管１０７の端
部よりやや外に出るような長さに設定されている。吸入
接続管１０９には吸入配管１１０が挿入され、吸入配管
１１０、吸入接続管１０９、吸入外管１０７が同時に密
封ロー付けされ、密閉容器１０１の外部大気圧と吸入低
圧力部、吐出高圧力部とが隔壁される。従来構造におい
ては吸入接続管１０９は銅管のもの、鋼管でその表面に
銅メッキを施したものがある。密閉容器１０１に取り付
けられる吸入外管１０７、吐き出し管１０５は一般に銅
管であり、吸入配管１１０も一般に銅管である。[0003] The structure of a suction pipe 104 for directly sucking refrigerant gas into the compression mechanism 103 from the outside of the sealed container 101 is as shown in FIG. A hole is made in the closed vessel 101 at the same position as the suction hole 106 provided in the compression mechanism 103, and a suction outer tube 107 is formed there.
Is attached. The inlet of the suction hole 106 provided in the compression mechanism 103 is provided with a connection pipe insertion hole 108 which is slightly larger than the suction hole 106. Into this connection pipe insertion hole 108, a suction connection pipe 109 is provided.
To seal the discharge high pressure and the suction low pressure inside the closed container 101. The opposite end face of the suction connection pipe 107 is set to have a length such that the suction connection pipe 107 is slightly outside the end of the suction outer pipe 107 attached to the closed container 101. A suction pipe 110 is inserted into the suction connection pipe 109, and the suction pipe 110, the suction connection pipe 109, and the suction outer pipe 107 are simultaneously sealed and brazed. Are partitioned. In the conventional structure, the suction connection pipe 109 may be a copper pipe or a steel pipe whose surface is plated with copper. The suction outer pipe 107 and the discharge pipe 105 attached to the closed container 101 are generally copper pipes, and the suction pipe 110 is also generally a copper pipe.
【０００４】[0004]
【発明が解決しようとする課題】従来の構造の第一の課
題は鋼製の密閉容器１０１に銅管を銀ロー付けで密封接
続する場合はフラックスを必要とし、ロー付け後フラッ
クスを除去するという作業が必用であることである。こ
のフラックスの除去作業は一般にはフラックスが溶ける
水（湯）で行われる。しかしながら、オゾン層の破壊を
起こさない代替冷媒の候補に挙がっているＨＦＣ冷媒で
は、これと相溶する潤滑油であるエステル系の潤滑油が
用いられる。このエステル油は加水分解を起こしやす
く、加水分解を起こすと酸を発生するため、ＨＦＣ冷媒
用の圧縮機は極力水分を少なく管理する必要がある。ま
た、フラックスに含まれる塩素は極微量であってもＨＦ
Ｃ冷媒、エステル油の分解を促進する働きがあり、この
ため、フラックスの完全除去が必要となる。すなわち、
銀ロー付けは代替冷媒用圧縮機としてもっとも避けなけ
ればならない水と塩素系不純物が残留する工程が必要に
なってくる。しかも、密閉容器のような大きなものは湯
に浸すことが難しく、さらに構造が複雑になるとフラッ
クスの除去に用いた水分を完全に除去することも非常に
困難で、時間のかかる作業となっていた。A first problem of the conventional structure is that when a copper tube is hermetically connected to a steel sealed container 101 by silver brazing, a flux is required, and after the brazing, the flux is removed. Work is necessary. This flux removal operation is generally performed with water (hot water) in which the flux is soluble. However, ester-based lubricating oils, which are compatible with HFC refrigerants, which are listed as candidates for alternative refrigerants that do not cause destruction of the ozone layer, are used. This ester oil is liable to undergo hydrolysis, and when hydrolysis occurs, an acid is generated. Therefore, it is necessary to control the compressor for the HFC refrigerant with as little moisture as possible. In addition, even if the amount of chlorine contained in the flux is very small,
It functions to promote the decomposition of the C refrigerant and the ester oil, and therefore, it is necessary to completely remove the flux. That is,
Silver brazing requires a process in which water and chlorine-based impurities, which must be most avoided as a substitute refrigerant compressor, remain. In addition, it is difficult to immerse large objects such as airtight containers in hot water, and when the structure becomes complicated, it is also very difficult to completely remove the water used for removing the flux, which is a time-consuming operation. .
【０００５】本発明は、このような問題点を解消するも
ので、密閉容器への接続管の密封接続をフラックスを用
いる銀ロー付けを行うことなく実現することを目的とし
たものである。An object of the present invention is to solve such a problem, and an object of the present invention is to realize a sealed connection of a connection pipe to a closed container without performing silver brazing using a flux.
【０００６】更に、従来の構造の第２の課題は吸入管に
接続する吸入接続管に関してである。これを銅管で構成
した場合は熱膨張が大きいため、ロー付けによる熱で吸
入接続管が膨張し、さらにその後冷却収縮するため接続
管挿入孔との間のシールが損なわれたり、圧縮機構部に
大きな力がかかり、圧縮機構部の部品がずれたりする。
このようなことが起こらないように鋼管に銅メッキした
吸入接続管を使用することもあるが、鋼管の寸法を仕上
げ加工し、その後銅メッキを行うためコストの高い部品
となっていた。Further, a second problem of the conventional structure relates to a suction connection pipe connected to the suction pipe. When this is made of a copper tube, the thermal expansion is large, so the suction connection pipe expands due to the heat generated by brazing, and then cools and contracts, thereby damaging the seal between the connection pipe insertion hole and the compression mechanism. Large force is applied to the compression mechanism, and the components of the compression mechanism are displaced.
In order to prevent this from happening, a suction connection pipe in which a steel pipe is plated with copper is sometimes used. However, since the dimensions of the steel pipe are finished and then copper plating is performed, it is an expensive component.
【０００７】本発明は、このような問題点を解消するも
ので、安価の方法で銅メッキを行った鋼管と同一の機能
を持つ吸入接続管を得ることを目的としたものである。The present invention has been made to solve the above problems, and has as its object to obtain an inhalation connection pipe having the same function as a copper-plated steel pipe by an inexpensive method.
【０００８】[0008]
【課題を解決するための手段】上記の課題を解決するた
めに本発明は、密閉型圧縮機において、密閉容器への接
続管および吸入接続管を、銅メッキ鋼板を深絞りするこ
とにより管形状に成形することによって得るもので、安
価に作成できるとともに、密閉容器に抵抗溶接が可能と
なり、さらに銅配管には銅ロー付けが可能となる。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to a hermetic compressor, in which a connecting pipe to a closed vessel and a suction connecting pipe are formed by deep drawing copper-plated steel plate. It can be obtained at low cost, can be resistance-welded to a closed container, and can be copper-brazed to a copper pipe.
【０００９】[0009]
【発明の実施の形態】上記課題を解決するために請求項
１の発明は密閉型圧縮機の吸入接続管を銅メッキ鋼板を
深絞りすることにより管形状に成形し作成したもので、
熱膨張率が低く、銅ロー付け可能な吸入接続管が安価に
作成できる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that a suction connection pipe of a hermetic compressor is formed by deep drawing a copper plated steel plate into a pipe shape.
Inhalation connection pipes with low coefficient of thermal expansion and copper brazing can be made at low cost.
【００１０】また、請求項２の発明は密閉型圧縮機の吸
入接続管を銅メッキ鋼板を深絞りすることにより管形状
に成形し、ロー付けする側の端面を外周にバーリングし
てカットしたもので、銅メッキ部分が吸入接続管に内挿
した管の接続部にも、外挿した管の接続部の面にも現れ
るため、内面と外面の両方を同時にロー付けすることが
できる。According to a second aspect of the present invention, the suction connection pipe of the hermetic compressor is formed into a pipe shape by deep drawing a copper-plated steel plate, and the end face to be brazed is cut by burring on the outer periphery. Then, since the copper-plated portion also appears on the connection portion of the pipe inserted into the suction connection tube and on the surface of the connection portion of the extrapolated tube, both the inner surface and the outer surface can be brazed at the same time.
【００１１】さらに、請求項３の発明は密閉型圧縮機の
密閉容器に密封接続する接続管を、表面に銅メッキを施
した鋼管より構成し、密閉容器との接続部分を溶接によ
り接続したもので、メッキ厚さはミクロン単位であるた
め、抵抗溶接のように圧着し通電する事により、表面の
銅が飛び、鋼管の値の鋼と密閉容器の鋼板とが密封溶接
可能となる。銀ロー付けのようにフラックスを必要とし
ないため水を使ったフラックス除去が必要でなく水分、
塩素系の不純物を低く押さえることができる。Further, according to the third aspect of the present invention, the connection pipe for sealingly connecting to the sealed container of the hermetic compressor is constituted by a steel pipe whose surface is plated with copper, and the connection portion with the sealed container is connected by welding. Since the plating thickness is on the order of microns, by applying pressure and applying current as in resistance welding, copper on the surface jumps out, and the steel of the steel pipe value and the steel plate of the sealed container can be hermetically welded. It does not need flux like silver brazing, so there is no need for flux removal using water,
Chlorine-based impurities can be kept low.
【００１２】さらに、請求項４の発明は請求項３の接続
管のロー付けする側の端面を外周にバーリングしてカッ
トすることにより、接続管に銅配管を内挿した場合の銅
ロー付けを容易にする。Further, according to a fourth aspect of the present invention, a copper brazing when a copper pipe is inserted into the connecting pipe is performed by burring and cutting the end face of the connecting pipe to be brazed on the outer periphery. make it easier.
【００１３】また、請求項５の発明は請求項３接続管の
密閉容器側端部をテーパ状に拡大し、密閉容器に開けた
穴に抵抗溶接で密封接続したもので、密閉容器内側から
接続管を入れ、圧接して電流を流すことにより、安定し
て密封溶接が可能となる。According to a fifth aspect of the present invention, the end of the connection pipe on the side of the closed vessel is tapered, and the connection pipe is hermetically connected to a hole formed in the closed vessel by resistance welding. By inserting a tube, pressing and applying an electric current, it is possible to stably perform hermetic welding.
【００１４】さらに、請求項６の発明は請求項３の圧縮
機の冷媒としてＨＦＣ冷媒、潤滑油としてエステル系潤
滑油を使用したもので、密閉容器と接続管の密封接続に
フラックスを使う必要がないので、冷媒、潤滑油を分解
させる不純物の混入が無く、信頼性の高い圧縮機が実現
する。Further, the invention of claim 6 uses an HFC refrigerant as a refrigerant of the compressor of claim 3 and an ester-based lubricating oil as a lubricating oil. It is necessary to use a flux for the hermetic connection between the hermetic container and the connecting pipe. Therefore, there is no mixture of impurities that decompose the refrigerant and the lubricating oil, and a highly reliable compressor is realized.
【００１５】請求項７の発明は密閉容器に密封接続する
接続管を鋼管より構成し、接続管の密閉容器側端部付近
を拡管部を設けた後テーパ状に拡大し、このテーパ部を
密閉容器に開けた穴に抵抗溶接により密封接続したもの
で、テーパ部を抵抗溶接したときに生じる管内部への膨
らみを拡管部により逃げるため接続管につながる配管を
内挿したとき挿入不良になることがない。According to a seventh aspect of the present invention, the connecting pipe for sealingly connecting to the closed vessel is formed of a steel pipe, and the vicinity of the end of the connecting pipe on the closed vessel side is provided with an expanded section and then expanded in a tapered shape to seal the tapered section. It is a sealed connection by resistance welding to the hole opened in the container, and the expansion to the inside of the pipe caused by resistance welding of the tapered part is escaped by the expanded part, so the insertion failure when inserting the pipe connected to the connection pipe There is no.
【００１６】[0016]
【実施例】以下、本発明の実施例を添付図面により説明
する。図１は本発明の一実施例におけるローリングピス
トン型の密閉型圧縮機全体図である。密閉容器１の内部
に電動機部２と圧縮機構部３を収納している。密閉容器
１には冷媒ガスを吸い込む吸い込み管４と圧縮した冷媒
ガスを吐き出す吐き出し管５が取り付けられ、それぞれ
蒸発器（図示せず）、凝縮器（図示せず）に接続され、
いわゆる冷凍サイクルを構成する。吐き出し管５は密閉
容器１の上蓋部１ａにて溶接にて密封接続されている。
吐き出し管５は一般に銅の吐出配管（図示せず）と銅ロ
ー付けされる。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall view of a rolling piston type hermetic compressor according to an embodiment of the present invention. An electric motor unit 2 and a compression mechanism unit 3 are housed inside a closed container 1. The closed vessel 1 is provided with a suction pipe 4 for sucking the refrigerant gas and a discharge pipe 5 for discharging the compressed refrigerant gas, which are connected to an evaporator (not shown) and a condenser (not shown), respectively.
A so-called refrigeration cycle is configured. The discharge pipe 5 is hermetically connected by welding at the upper lid 1a of the closed vessel 1.
The discharge pipe 5 is generally brazed with a copper discharge pipe (not shown).
【００１７】吸い込み管４は密閉容器１の円筒部１ｂに
接続される。その詳細構造を図２に示す。圧縮機構部３
に設けられた吸い込み孔６と同じ位置に、密閉容器１に
は穴が開けられ、そこに吸入外管７が取り付けられてい
る。圧縮機構部３に設けられた吸入孔６の入り口は吸入
孔６よりやや大きな孔である接続管挿入孔８が開けられ
ている。この接続管挿入孔８には吸入接続管９が密閉容
器１の外部から圧入され、密閉容器１の内部の吐出高圧
と吸入低圧をシールする。吸入接続管７の逆側端面は密
閉容器１に取り付けられた吸入外管７の端部よりやや外
に出るような長さに設定されている。吸入接続管９には
吸入配管１０が挿入され、吸入配管１０、吸入接続管
９、吸入外管７が同時に密封銅ロー付け１１ａ，１１ｂ
され、密閉容器１の外部大気圧と吸入低圧力部、吐出高
圧力部とが隔壁される。The suction pipe 4 is connected to the cylindrical portion 1b of the closed vessel 1. The detailed structure is shown in FIG. Compression mechanism 3
A hole is formed in the closed container 1 at the same position as the suction hole 6 provided in the container, and a suction outer tube 7 is attached to the hole. The inlet of the suction hole 6 provided in the compression mechanism 3 is provided with a connection pipe insertion hole 8 which is slightly larger than the suction hole 6. A suction connection pipe 9 is press-fitted into the connection pipe insertion hole 8 from the outside of the closed vessel 1 to seal a discharge high pressure and a suction low pressure inside the closed vessel 1. The opposite end face of the suction connection pipe 7 is set to have a length such that the suction connection pipe 7 is slightly outside the end of the suction outer pipe 7 attached to the closed container 1. A suction pipe 10 is inserted into the suction connection pipe 9, and the suction pipe 10, the suction connection pipe 9, and the suction outer pipe 7 are simultaneously sealed with copper brazing 11a, 11b.
Then, the outside atmospheric pressure, the suction low pressure part, and the discharge high pressure part of the closed container 1 are partitioned.
【００１８】次に本発明における請求項１および請求項
２の吸入接続管９の作成方法を図３の工程図により説明
する。ａ）銅メッキ１３を施した鋼板１２（以降銅メッ
キ鋼板と呼ぶ）を円盤状に切断する。メッキ厚さは５ミ
クロンから１００ミクロンの間が適当である。ｂ）次に
深絞りプレス加工により２段の円筒形状１４、１５にす
る。プレスしやすさのため先端部１６はポンチ部のＲ形
状、後端部１７はフランジ形状となる。ｃ）先端部１
６、後端部１７を２点鎖線のように吸入接続管９の軸線
方向に落とす。先端部１６は軸線方向に落とすことによ
り出口穴１８が確保されると共に、その外周はＲ形状１
６ａとなり、接続管挿入孔８への圧入がスムースとな
り、傷が付いてシールが損なわれたりしない。後端部１
７はフランジ部が吸入接続管９の軸線方向に落とされて
いるので、その内側端部１７ａは銅メッキ部が残ったＲ
形状となり、内挿した銅管との間が銅同士となり、銅ロ
ー付けが容易になる。これを吸入接続管９に軸線方向に
直角に切断すると、その切断面は鋼の表面となり、銅ロ
ーがはじくため安定した密封ロー付けができない。ま
た、切断方向が軸線方向であるため、切断工程はプレス
工程に引き続いてプレス機内でできるので安価な作成法
となる。また、地は鋼管であるため銅に比べ、熱膨張が
少なく、ロー付けによる熱で吸入接続管が膨張し、さら
にその後冷却収縮するため接続管挿入孔との間のシール
が損なわれたり、圧縮機構部に大きな力がかかり、圧縮
機構部の部品がずれたりすることがない。Next, a method for forming the suction connection pipe 9 according to the first and second aspects of the present invention will be described with reference to the process chart of FIG. a) A steel plate 12 having a copper plating 13 (hereinafter referred to as a copper-plated steel plate) is cut into a disk shape. The plating thickness is suitably between 5 microns and 100 microns. b) Next, two-stage cylindrical shapes 14 and 15 are formed by deep drawing press working. For ease of pressing, the front end 16 has an R shape of a punch portion, and the rear end 17 has a flange shape. c) Tip 1
6. The rear end 17 is dropped in the axial direction of the suction connection pipe 9 as shown by a two-dot chain line. The tip 16 is secured in the axial direction by dropping it in the axial direction, so that the outlet hole 18 is secured.
6a, the press-fitting into the connection pipe insertion hole 8 becomes smooth, and the seal is not damaged due to damage. Rear end 1
7 has a flange portion dropped in the axial direction of the suction connection pipe 9, so that the inner end portion 17a has an R end on which a copper plating portion remains.
It becomes a shape, and copper is inserted between the inserted copper tubes, and copper brazing becomes easy. If this is cut at right angles to the suction connection pipe 9 in the axial direction, the cut surface becomes a steel surface, and copper brazing repels, so that stable sealing brazing cannot be performed. Further, since the cutting direction is the axial direction, the cutting step can be performed in a press machine following the pressing step, so that it is an inexpensive manufacturing method. In addition, since the ground is a steel pipe, its thermal expansion is less than that of copper.The heat from brazing expands the suction connection pipe, and then cools and contracts, so the seal between the connection pipe insertion hole is damaged and compression occurs. A large force is applied to the mechanism, and the components of the compression mechanism do not shift.
【００１９】次に、請求項３および４，５，６の発明の
一実施例を図２および図４にて説明する。図４は吐き出
し管５の詳細図である。吐き出し管５はベース５ａは鋼
製であり、その表面は銅メッキ５ｂされている。その作
成方法は鋼管を成形した後、銅メッキしても良いしがこ
の方法ではコストが高いので、銅メッキされた鋼管（銅
メッキ鋼管）を成形するか、上に述べたように銅メッキ
鋼板をプレス加工により管状に成型する方法がある。後
者２つの場合は、その切断面５ｃに銅メッキ部が無い点
に注意しなければならない。吐き出し管５の密閉容器側
端部５ｄはテーパ状に拡大されており、逆側の吐出配管
に接続される側５ｅはバーリング加工しその外周を密閉
容器に開けられた穴の径よりも小さくなるようにカット
５ｆしている。Next, an embodiment of the present invention will be described with reference to FIG. 2 and FIG. FIG. 4 is a detailed view of the discharge pipe 5. The discharge pipe 5 has a base 5a made of steel, and a surface thereof is plated with copper 5b. The method of forming the steel pipe may be copper plating after forming the steel pipe. However, since this method is expensive, a copper-plated steel pipe (copper-plated steel pipe) may be formed, or a copper-plated steel sheet may be formed as described above. Is formed into a tubular shape by press working. In the latter two cases, it must be noted that the cut surface 5c has no copper plating. The end 5d of the discharge pipe 5 on the closed container side is enlarged in a tapered shape, and the side 5e connected to the discharge pipe on the opposite side is burred and the outer periphery thereof is smaller than the diameter of a hole formed in the closed container. Cut 5f as shown.
【００２０】次に、組立順序について述べる。吐き出し
管５は密閉容器の上蓋１ａに開けた穴１９の内側から挿
入される。端部のテーパは穴より大きいので、テーパ部
を密閉容器とテーパ部と同じ角度２０ａを持つ溶接電極
２０との間に挟み込み加圧固定する。このとき密閉容器
の穴の接触端部が鋭角であることが重要である。次に溶
接電極２０と密閉容器１ａとの間に大電流を流す。テー
パ部は密閉容器の穴の鋭角部２１と接触しているのでこ
の部分に電流が集中し、表面の銅５ｂは飛び、地の鋼管
部５ａと密閉容器の鋼板１ａが密封溶接される。このよ
うな密封接合方法はフラックッスを用いないので、フラ
ックス除去の水洗いを必要としない。さらに、ゴミ等の
発生が少ないので洗浄も容易である。従って、請求項６
のようにオゾン層の破壊を起こさない代替冷媒の候補に
挙がっているＨＦＣ冷媒で、これと相溶する潤滑油であ
るエステル系の潤滑油を用いる場合でも、圧縮機内部に
フラックスに含まれる塩素分や、その除去に用いた水分
が残留することがなく、信頼性の高い圧縮機を提供する
ことができる。Next, the order of assembly will be described. The discharge pipe 5 is inserted from the inside of a hole 19 formed in the upper lid 1a of the closed container. Since the taper at the end is larger than the hole, the taper is sandwiched between the closed vessel and the welding electrode 20 having the same angle 20a as the taper, and is fixed by pressing. At this time, it is important that the contact end of the hole of the closed container has an acute angle. Next, a large current is applied between the welding electrode 20 and the sealed container 1a. Since the tapered portion is in contact with the acute angle portion 21 of the hole of the closed container, current concentrates on this portion, the copper 5b on the surface jumps, and the steel pipe portion 5a of the ground and the steel plate 1a of the closed container are hermetically welded. Since such a sealing joining method does not use flux, it does not require washing with water for flux removal. Further, since there is little generation of dust and the like, cleaning is easy. Therefore, claim 6
HFC refrigerants that are listed as candidates for alternative refrigerants that do not cause depletion of the ozone layer as described above. Even when ester-based lubricating oil that is compatible with HFC refrigerant is used, chlorine contained in flux inside the compressor Therefore, a highly reliable compressor can be provided without remaining the water used for the removal.
【００２１】一方の端部５ｅには吐出配管２２が挿入さ
れる。吐出配管２２は一般に銅製で吐出管５とは銅ロー
付けされる。端部５ｅがバーリング加工され広がってい
るので、挿入された銅管との間が銅表面５ｂになり、容
易に銅ロー付けすることができる。A discharge pipe 22 is inserted into one end 5e. The discharge pipe 22 is generally made of copper and copper brazed to the discharge pipe 5. Since the end 5e is burred and widened, the space between the end 5e and the inserted copper tube becomes the copper surface 5b, and copper brazing can be easily performed.
【００２２】次に請求項７の発明を中心に図２の吸入外
管７について述べる。吸入外管７は吐き出し管５と同じ
く銅メッキ７ｂされた鋼管７ａからできている。形状は
吐き出し管５と同様に密閉容器側の端部７ｃはテーパ状
になっている。テーパ状端部付近は拡管７ｄされてお
り、中央部の管径７ｃよりやや大きく設定されている。
中央部の内径７ｅは吸入接続管９の外径に近い径となっ
ている。更に、密閉容器１ｂと反対側の端部７ｆはバー
リング加工され広がっている。吸入外管７は吐き出し管
５と同様に密閉容器１の内側から挿入され、そのテーパ
部７ｃの抵抗溶接される。このとき、溶接部分７ｇはそ
の圧接力及び溶接の歪みにより内側に膨らむ。特に、吸
入外管７は密閉容器１の円筒容器１ｂにつくため円筒容
器１ｂに開けられた穴１ｃは平坦でなく、このため歪み
が生じやすい。この歪み及び内側への膨らみがあっても
管が入るように拡管部を設けてある。吸入外管７の密閉
容器１ｂと反対側の端部７ｆはバーリング加工され広が
っているので挿入された吸入接続管９の外面９ａの両方
ともが銅メッキ部となり容易にロー付けできる。吸入接
続管９の端部１７も同様にバーリング加工され広がって
いるのでこれに挿入される銅管である吸入配管１０との
接続面も銅同士となり、容易に銅ロー付けが可能とな
る。吸入接続管９の端部１７の出代を調整することによ
り、吸入外管７、吸入接続管９、吸入配管１０は同時に
銅ロー付けする事も可能である。Next, the suction outer pipe 7 shown in FIG. The outer suction pipe 7 is made of a steel pipe 7a plated with copper 7b like the discharge pipe 5. Like the discharge pipe 5, the end 7c on the closed container side is tapered. The area near the tapered end is expanded 7d, and is set slightly larger than the central pipe diameter 7c.
The inner diameter 7e at the center is close to the outer diameter of the suction connection pipe 9. Further, the end 7f on the opposite side to the closed container 1b is burred and spread. The suction outer pipe 7 is inserted from the inside of the closed container 1 like the discharge pipe 5, and the tapered portion 7c is resistance-welded. At this time, the welded portion 7g expands inward due to the pressing force and welding distortion. In particular, since the suction outer pipe 7 is attached to the cylindrical container 1b of the closed container 1, the hole 1c formed in the cylindrical container 1b is not flat, and thus distortion is likely to occur. An expanded portion is provided so that the tube can enter even if there is this distortion and bulging inward. Since the end 7f of the suction outer tube 7 opposite to the closed container 1b is burred and widened, both of the outer surfaces 9a of the inserted suction connection tube 9 become copper plated portions and can be easily brazed. Similarly, the end portion 17 of the suction connection pipe 9 is also burred and widened, so that the connection surface with the suction pipe 10, which is a copper pipe inserted therein, is also made of copper, so that copper brazing can be easily performed. By adjusting the margin of the end 17 of the suction connection pipe 9, the copper outer brazing pipe 7, the suction connection pipe 9, and the suction pipe 10 can be simultaneously brazed.
【００２３】以上、ローリングピストン型の密閉圧縮機
を例に述べたがスクロール圧縮機など圧縮機の形式が異
なっても本発明が適用できることはいうまでもない。The rolling piston type hermetic compressor has been described above as an example. However, it goes without saying that the present invention can be applied to different types of compressors such as scroll compressors.
【００２４】[0024]
【発明の効果】以上のように本発明の請求項１は、密閉
型圧縮機の吸入接続管を銅メッキ鋼板を深絞りすること
により管形状に成形し作成したもので、熱膨張率が低
く、銅ロー付け可能な吸入接続管が安価に作成できると
いう効果がある。As described above, the first aspect of the present invention is that the suction connection pipe of the hermetic compressor is formed by deep drawing copper-plated steel sheet into a pipe shape, and has a low coefficient of thermal expansion. In addition, there is an effect that an inhalation connection pipe to which copper brazing can be performed can be manufactured at low cost.
【００２５】また、請求項２の発明は吸入接続管を銅メ
ッキ鋼板又は銅メッキ鋼管から成形し、ロー付けする側
の端面を外周にバーリングしてカットしたもので、銅メ
ッキ部分が吸入接続管に内挿した管の接続部にも、外挿
した管の接続部の面にも現れるため、内面と外面の両方
を同時にロー付けすることができるという効果を奏する
ものである。According to a second aspect of the present invention, the suction connection pipe is formed from a copper-plated steel plate or a copper-plated steel pipe, and the end face to be brazed is cut by burring the outer periphery. Since both the inner surface and the outer surface can be brazed at the same time because they appear both at the connection portion of the pipe inserted into the tube and at the surface of the connection portion of the extrapolated tube.
【００２６】さらに、請求項３の発明は密閉型圧縮機の
密閉容器に密封接続する接続管を、表面に銅メッキを施
した鋼管より構成し、密閉容器との接続部分を溶接によ
り密封接続する事により、銀ロー付けのようにフラック
スを必要としないため水を使ったフラックス除去が必要
でなく水分、塩素系の不純物を低く押さえることがで
き、さらに容易に配管と銅ロー付けが可能となり作成し
やすく信頼性の高い圧縮機が提供できる。Further, according to a third aspect of the present invention, a connecting pipe for sealingly connecting to a sealed container of a hermetic compressor is formed of a steel pipe having a copper plating on a surface, and a connection portion with the sealed container is hermetically connected by welding. This eliminates the need for flux as with silver brazing, so there is no need to remove the flux using water, which keeps moisture and chlorine-based impurities low, making piping and copper brazing easier. It is possible to provide a compressor which is easy and reliable.
【００２７】請求項４の発明は請求項３の接続管のロー
付けする側の端面を外周にバーリングしてカットするこ
とにより、接続管に銅配管を内挿した場合の銅ロー付け
を容易にする。According to a fourth aspect of the present invention, a copper brazing when a copper pipe is inserted into a connecting pipe can be easily performed by burring and cutting the end face of the third side of the connecting pipe to be brazed to the outer periphery. I do.
【００２８】また、請求項５の発明は請求項３接続管の
密閉容器側端部をテーパ状に拡大したもので、密閉容器
に開けた穴に抵抗溶接することができ、安定した密封溶
接が可能となる。According to a fifth aspect of the present invention, the end of the connecting pipe on the side of the closed vessel is enlarged in a tapered shape, so that resistance welding can be performed on a hole formed in the closed vessel, and stable sealing welding can be performed. It becomes possible.
【００２９】さらに、請求項６の発明は請求項３の圧縮
機の冷媒としてＨＦＣ冷媒、潤滑油としてエステル系潤
滑油を使用したもので、密閉容器と接続管の密封接続に
フラックスを使う必要がないので、冷媒、潤滑油を分解
させる不純物の混入が無く、信頼性の高い圧縮機が実現
する。Further, the invention of claim 6 uses an HFC refrigerant as the refrigerant of the compressor of claim 3 and an ester-based lubricating oil as the lubricating oil. It is necessary to use a flux for the hermetic connection between the hermetic container and the connecting pipe. Therefore, there is no mixture of impurities that decompose the refrigerant and the lubricating oil, and a highly reliable compressor is realized.
【００３０】請求項７の発明は密閉容器に密封接続する
接続管を鋼管より構成し、接続管の密閉容器側端部付近
を拡管部を設けた後テーパ状に拡大したもので、テーパ
部を抵抗溶接したときに生じる管内部への膨らみを拡管
部により逃げるため接続管につながる配管を内挿したと
き挿入不良になることがない。According to a seventh aspect of the present invention, the connecting pipe for sealingly connecting to the closed container is formed of a steel pipe, and the vicinity of the end of the connecting pipe on the closed container side is expanded in a tapered shape after an expanded portion is provided. The expansion to the inside of the pipe, which occurs when resistance welding is performed, is escaped by the expanded pipe section, so that when the pipe connected to the connection pipe is inserted, insertion failure does not occur.
【図１】本発明の一実施例である密閉型圧縮機の縦断面
図FIG. 1 is a longitudinal sectional view of a hermetic compressor according to an embodiment of the present invention.
【図２】本発明の一実施例である吸い込み管部の詳細断
面図FIG. 2 is a detailed sectional view of a suction pipe portion according to an embodiment of the present invention.
【図３】本発明の一実施例である吸入接続管の作成工程
図FIG. 3 is a drawing showing a process for producing a suction connection pipe according to an embodiment of the present invention.
【図４】本発明の一実施例である吐き出し管の詳細断面
図FIG. 4 is a detailed sectional view of a discharge pipe according to an embodiment of the present invention.
【図５】従来の密閉型圧縮機の縦断面図FIG. 5 is a longitudinal sectional view of a conventional hermetic compressor.
１ 密閉容器 ２ 電動機 ３ 圧縮機構部 ４ 接続管（吸い込み管） ５ 接続管（吐き出し管） ７ 接続管（吸入外管） ８ 接続管挿入孔 ９ 吸入接続管 １０ 吸入配管 ５ｃ，７ｆ ロー付けする側の端部 DESCRIPTION OF SYMBOLS 1 Closed container 2 Electric motor 3 Compression mechanism part 4 Connection pipe (suction pipe) 5 Connection pipe (discharge pipe) 7 Connection pipe (outer suction pipe) 8 Connection pipe insertion hole 9 Suction connection pipe 10 Suction pipe 5c, 7f Side to be brazed End of
Claims (7)
納し、前記圧縮機構部に冷媒が流通する接続管挿入孔を
設け、この接続管挿入孔に一端を挿入し、他端を前記密
閉容器外部でロー付け密封する接続管を銅メッキ鋼板を
深絞りすることにより管形状に成形したことを特徴とす
る密閉型圧縮機。An electric motor section and a compression mechanism section are housed inside a closed container, a connection pipe insertion hole through which a refrigerant flows is provided in the compression mechanism section, one end is inserted into the connection pipe insertion hole, and the other end is connected to the connection pipe insertion hole. A hermetic compressor characterized in that a connection pipe to be brazed and sealed outside a closed vessel is formed into a pipe shape by deep drawing a copper plated steel sheet.
納し、前記圧縮機構部に冷媒が流通する接続管挿入孔を
設け、この接続管挿入孔に一端を挿入し、他端を前記密
閉容器外部で内面と外面の両方をロー付け密封する接続
管を銅メッキ鋼板を深絞りすることにより管形状に成形
し、前記ロー付けする側の端面を外周にバーリングして
カットしたことを特徴とする密閉型圧縮機。An electric motor and a compression mechanism are housed inside the closed vessel, and a connection pipe insertion hole through which a refrigerant flows is provided in the compression mechanism. One end is inserted into the connection pipe insertion hole, and the other end is connected to the connection pipe. A connection pipe that is brazed to both the inner and outer surfaces outside the sealed container is formed into a pipe shape by deep drawing copper-plated steel plate, and the end face on the brazing side is cut by burring to the outer periphery. And hermetic compressor.
納した密閉型圧縮機において、前記密閉容器に密封接続
する接続管を、表面に銅メッキを施した鋼管より構成
し、密閉容器との接続部分を溶接により接続し、接続管
と圧縮機外部配管との間を銅ロー付けにより接続するこ
とを特徴とする密閉型圧縮機。3. A hermetic compressor in which an electric motor section and a compression mechanism section are housed inside a hermetically sealed container, wherein a connecting pipe hermetically connected to the hermetically sealed vessel is made of a steel pipe having a surface plated with copper. A hermetically-sealed compressor, characterized in that the connection portion of (1) is connected by welding, and the connection pipe and the external pipe of the compressor are connected by copper brazing.
り成形し、ロー付けする側の端面を外周にバーリングし
てカットした請求項３記載の密閉型圧縮機。4. The hermetic compressor according to claim 3, wherein the connection pipe is formed from a copper-plated steel plate or a copper-plated steel pipe, and an end surface on a brazing side is cut by burring on an outer periphery.
し、密閉容器に開けた穴に抵抗溶接で密封接続した請求
項３記載の密閉型圧縮機。5. The hermetic compressor according to claim 3, wherein the end portion of the connection pipe on the side of the closed vessel is tapered and hermetically connected to a hole formed in the closed vessel by resistance welding.
テル系潤滑油を使用する請求項３記載の密閉型圧縮機。6. The hermetic compressor according to claim 3, wherein an HFC refrigerant is used as the refrigerant, and an ester lubricating oil is used as the lubricating oil.
納した密閉型圧縮機において、前記密閉容器に密封接続
する接続管を鋼管より構成し、接続管の密閉容器側端部
付近を拡管部を設けた後テーパ状に拡大し、このテーパ
部を密閉容器に開けた穴に抵抗溶接により密封接続した
ことを特徴とする密閉型圧縮機。7. A hermetic compressor in which an electric motor section and a compression mechanism section are housed inside a hermetic container, wherein a connecting pipe hermetically connected to the hermetic vessel is formed of a steel pipe, and the vicinity of an end of the connecting pipe on the hermetic vessel side is expanded. A hermetic compressor characterized by having a tapered shape after forming the portion and sealingly connecting the tapered portion to a hole formed in the sealed container by resistance welding.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17342797A JP3783346B2 (en) | 1997-06-30 | 1997-06-30 | Hermetic compressor |
| US09/106,043 US6158995A (en) | 1997-06-30 | 1998-06-29 | Sealed compressor having pipe connectors and method of joining pipe connectors to sealed casing |
| MYPI98002947A MY120330A (en) | 1997-06-30 | 1998-06-29 | Sealed compressor having pipe connectors and method of joining pipe connectors to sealed casing |
| CNB031041515A CN1246593C (en) | 1997-06-30 | 1998-06-30 | Sealed compressor and method for connecting pipe connector to sealed shell |
| CNB981156495A CN1143062C (en) | 1997-06-30 | 1998-06-30 | Sealed compressor having pipe connectors and method of joining pipe connectors to sealed casing |
| US09/556,435 US6257846B1 (en) | 1997-06-30 | 2000-04-24 | Sealed compressor having pipe connectors and method of joining pipe connectors to sealed casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17342797A JP3783346B2 (en) | 1997-06-30 | 1997-06-30 | Hermetic compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1113671A true JPH1113671A (en) | 1999-01-19 |
| JP3783346B2 JP3783346B2 (en) | 2006-06-07 |
Family
ID=15960261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17342797A Expired - Fee Related JP3783346B2 (en) | 1997-06-30 | 1997-06-30 | Hermetic compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3783346B2 (en) |
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| JP2006077701A (en) * | 2004-09-10 | 2006-03-23 | Matsushita Electric Ind Co Ltd | Hermetic-type compressor |
| WO2009031452A1 (en) * | 2007-09-06 | 2009-03-12 | Sanden Corporation | Scroll type fluid machine |
| JP2013032704A (en) * | 2011-07-29 | 2013-02-14 | Fujitsu General Ltd | Refrigerant compressor |
| CN102962633A (en) * | 2012-11-30 | 2013-03-13 | 东莞市金瑞五金制品有限公司 | Assembling technology of liquid storage device and compressor |
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| JP2015209677A (en) * | 2014-04-25 | 2015-11-24 | エノモト工業株式会社 | Cap of fence brace member |
| CN105402106A (en) * | 2014-09-08 | 2016-03-16 | 三菱电机株式会社 | Compressor And Method For Manufacturing Compressor |
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| JP2018123717A (en) * | 2017-01-30 | 2018-08-09 | 株式会社富士通ゼネラル | Rotary compressor and refrigeration cycle device |
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