JPS63179193A - Scroll type compressor - Google Patents
Scroll type compressorInfo
- Publication number
- JPS63179193A JPS63179193A JP984187A JP984187A JPS63179193A JP S63179193 A JPS63179193 A JP S63179193A JP 984187 A JP984187 A JP 984187A JP 984187 A JP984187 A JP 984187A JP S63179193 A JPS63179193 A JP S63179193A
- Authority
- JP
- Japan
- Prior art keywords
- oil supply
- supply pipe
- fit
- press
- shrink
- 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
- 239000003921 oil Substances 0.000 claims abstract description 69
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 239000010687 lubricating oil Substances 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241001342895 Chorus Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- HAORKNGNJCEJBX-UHFFFAOYSA-N cyprodinil Chemical compound N=1C(C)=CC(C2CC2)=NC=1NC1=CC=CC=C1 HAORKNGNJCEJBX-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は密閉容器内に圧縮機構と電動機を配設し、密閉
容器内の高圧圧力と背圧室内の圧力との差圧を利用して
密閉容器底部の潤滑油を、電動機軸の軸端部に取付けた
給油バイビおよびクランク軸内に設けた給油孔を通して
軸受へ給油するようにしたスクロール圧縮機に係り、特
に前記給油パイプの電動機軸への取付構造に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention disposes a compression mechanism and an electric motor in a closed container, and utilizes the pressure difference between the high pressure inside the closed container and the pressure inside a back pressure chamber. The present invention relates to a scroll compressor in which lubricating oil at the bottom of a sealed container is supplied to a bearing through an oil supply bivi attached to the end of the motor shaft and an oil supply hole provided in the crankshaft, and in particular to the motor shaft of the oil supply pipe. Regarding the mounting structure.
従来のスクロール圧ｌ１ｉＩ＠は、脣開昭６０−９３１
９２号に記載のように、電動機軸の給油パイプ嵌合穴お
よび給油パイプの前記嵌合穴への嵌合部をストレーナに
加工し、給油パイプを嵌合穴へ圧入し、焼バメすること
により、該給油パイプを電動機軸に締結する構造として
いる。The conventional scroll pressure l1iI@
As described in No. 92, by processing the oil supply pipe fitting hole of the motor shaft and the fitting part of the oil supply pipe into the fitting hole into a strainer, press-fitting the oil supply pipe into the fitting hole, and shrink-fitting. The structure is such that the oil supply pipe is fastened to the motor shaft.
上記従来技術において、ＩＥＩｊ１７磯軸の嵌合穴の加
工とじてに、ドリル、リーマ等による機械加工が考えら
れ、また給油パイプの嵌合部の加工として、−ハ、切削
等による機械加工あるいは給油パイプ自体を成形加工す
ることが考えられます。In the above-mentioned conventional technology, machining using a drill, reamer, etc. can be considered for machining the fitting hole of the IEIj17 iso shaft, and machining by cutting etc. or lubrication can be considered for machining the fitting part of the oil supply pipe. One possibility is to mold the pipe itself.
しかし、前記の嵌合穴および給油パイプの嵌合部を機械
加工する場合、締め代をある範囲内とするため、加工に
手間がかかシ、また給油パイプにあっては加工（切削）
代を見込む関係上、給油パイプとして厚肉パイプを使用
しなければならない。また、給油パイプを成形加工する
場合には、機械加工のような公差範囲での成形が困嬢で
あることから締め代の範囲が大きくなり、かつ成形上薄
肉パイプであることから、締め代が大の方では、前記嵌
合穴への圧入時に大きな力を必要として給油パイプが座
屈する慣れがある。However, when machining the fitting hole and the fitting part of the oil supply pipe, the tightening margin must be within a certain range, which takes time and effort, and the oil supply pipe requires machining (cutting).
Because of the cost involved, a thick-walled pipe must be used as the oil supply pipe. In addition, when forming an oil supply pipe, the range of interference is large because it is difficult to form within the tolerance range like machining, and the range of interference is large because the pipe is formed with a thin wall. In the case of large pipes, a large amount of force is required when press-fitting into the fitting hole, which causes the oil supply pipe to buckle.
また締結時に、薄肉のため給油パイプの嵌合部が一性変
形してしまって、中央部の面圧が確保されず、端部の面
圧のみとなり、保持力が非常に小さくなる問題がある。Additionally, when tightening, the fitting part of the oil supply pipe is deformed due to its thin wall, and the surface pressure in the center is not ensured, only at the ends, which causes the problem of very low holding force. .
本発明の目的は、給油パイプ締結部の加工時間を短縮で
きると共に、給油パイプとして薄肉パイプを使用でき、
かつ広範囲な締め代でも保持力の低下を防ぐことができ
るスクロール圧縮機を提供することにある。The object of the present invention is to shorten the processing time of the oil supply pipe fastening part, and to use a thin-walled pipe as the oil supply pipe.
It is also an object of the present invention to provide a scroll compressor that can prevent a reduction in holding force even with a wide range of tightness.
上記目的は、うす巻き状のラップを有する旋回スクロー
ルおよび固定スクロールを組み合わせた圧縮機構を密閉
容器内の上方に、かつ圧縮機構をクランク軸を介して駆
動する電動機を密閉容器内の下方にそれぞれ被設し、圧
縮機構の吐出口を密閉容器内に連通させて該密閉容器内
を高圧雰曲気とする一方、旋回スクロールと該旋回スク
ロールを支持するフレームとの間に、圧縮機構の圧縮途
中の圧力を導入し、その圧力により旋回スクロールを固
定スクロールに押し付ける背圧室を形成し、密閉容器の
底部に潤滑油の油溜シを形成し、密閉容器内の高圧圧力
と前記背圧室内の圧力との差圧を利用して前記油溜シの
潤滑油を、電動機軸の軸端に取付けた給油パイプおよび
クランク軸内に設けた給油孔を通して旋回軸受、主軸受
へ給油するようにして成るスクロール圧縮機において、
前記電動機の軸端部に給油パイプを嵌合させる嵌合穴を
設け、かつ給油パイプに前記嵌合穴の穴径よシ大きい圧
入、焼バメ部を軸方向ｖｃ２１１ｉ所以上形成し、給油
パイプの前記圧入、焼バメ部を嵌合穴に圧入し、焼バメ
することにより該給油パイプを電動機軸に取付けること
で、達成される。The above purpose is to install a compression mechanism that combines an orbiting scroll with a thinly wound wrap and a fixed scroll in the upper part of the closed container, and to install an electric motor that drives the compression mechanism via a crankshaft in the lower part of the closed container. The discharge port of the compression mechanism is communicated with the inside of the hermetic container to create a high-pressure atmosphere inside the hermetic container. A back pressure chamber is formed in which pressure is introduced to press the orbiting scroll against the fixed scroll, and a lubricating oil reservoir is formed at the bottom of the closed container to reduce the high pressure inside the closed container and the pressure in the back pressure chamber. A scroll configured to supply lubricating oil from the oil sump to the swing bearing and the main bearing through an oil supply pipe attached to the shaft end of the motor shaft and an oil supply hole provided in the crankshaft, using the differential pressure between the two scrolls. In the compressor,
A fitting hole into which the oil supply pipe is fitted is provided at the shaft end of the electric motor, and a press-fit and shrink fit portion larger than the hole diameter of the fitting hole is formed in the oil supply pipe at least VC211i in the axial direction. This is achieved by attaching the oil supply pipe to the motor shaft by press-fitting the press-fitting and shrink-fitting portion into the fitting hole and shrink-fitting.
ｘａｍ軸の嵌合穴と給油パイプ嵌合部の嵌め合い部分に
おいて、給油パイプ妖合部に形成された２箇所以上の圧
入、焼バメ部は、圧入、焼バメによりて嵌め合い面圧を
生ずる。この嵌め合唱ハ面圧は端部で大きく、中央部で
小さくなる。At the fitting part between the fitting hole of the xam shaft and the fitting part of the oil supply pipe, two or more press-fit and shrink fit parts formed in the fitting part of the oil supply pipe generate fitting surface pressure due to the press fit and shrink fit. . This fitting chorus surface pressure is large at the ends and small at the center.
従って、締め代が小の場合には、圧入、焼バメ部が弾性
域のため、はぼ均等の面圧が確保される。また締め代が
大の場合には、各圧入、滉バメ部の端部に生ずる面圧で
給油パイプは保持される。Therefore, when the interference is small, the press-fit and shrink-fit portions are in the elastic range, so a more or less uniform surface pressure is ensured. Furthermore, when the interference is large, the oil supply pipe is held by the surface pressure generated at the ends of each press-fit and tight-fit portion.
つまり、広範囲な締め代でも十分な保持力が得られる。In other words, sufficient holding force can be obtained even with a wide range of interference.
また、給油パイプとしては、その嵌合部に圧入、焼バメ
部を形成するだけで、切削等の機械加工を行う必要がな
いので、薄肉パイプを使用できる。さらに、電動機軸の
嵌合穴は単なるストレーナの穴とすればよいので、その
穴加工を短時間に行える。Further, as the oil supply pipe, a thin-walled pipe can be used, since it is not necessary to perform machining such as cutting, just by press-fitting the fitting part and forming a shrink-fitting part. Furthermore, since the fitting hole of the motor shaft can be simply a strainer hole, the hole can be machined in a short time.
以下、本発明の一実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図は本発明によるスクロール圧縮機の縦断面図、第
２図は第１図における給油パイプの取付部の拡大断面図
を示している。第１図において、密閉容器１内の上方に
は圧縮機構２が、かつ下方には電動機部３がそれぞれ配
設されている。圧縮機構２けうす巻き状のラップを有す
る旋回スクロール４および固定スクロール５と、旋回ス
クロール４を収納し、て密閉容器ＩＫ固定され、かつク
ランク軸７を支持する主軸受８を有するフレーム６とよ
シ構成されている。旋回スクロール４の背面には旋回軸
受９を有し、その旋回軸受９はクランク軸７のクランク
７ａ’を支持している。クランク軸７は電動機軸１０ｒ
こ直結されている。旋回スクロール４とフレーム６との
間には、旋回スクロール４の自転を防止するオルダム機
構１１が設けられている。固定スクロール５には密閉容
器１外と連通ずる吸入管１２が接続され、ま之固定スク
ロール５の中央部には密閉容器１内と連通ずる吐出口１
３が設けられている。また、密閉容器１の圧縮機構２と
電動機部３との間には吐出管１４が突出開口している。FIG. 1 is a longitudinal cross-sectional view of a scroll compressor according to the present invention, and FIG. 2 is an enlarged cross-sectional view of the attachment portion of the oil supply pipe in FIG. In FIG. 1, a compression mechanism 2 is disposed above and a motor section 3 is disposed below within a closed container 1. Compression mechanism 2 consists of an orbiting scroll 4 and a fixed scroll 5 having a spiral wrap, and a frame 6 which houses the orbiting scroll 4, is fixed to an airtight container IK, and has a main bearing 8 which supports a crankshaft 7. is configured. The orbiting scroll 4 has an orbiting bearing 9 on the back surface, and the orbiting bearing 9 supports the crank 7a' of the crankshaft 7. The crankshaft 7 is the motor shaft 10r
This is directly connected. An Oldham mechanism 11 is provided between the orbiting scroll 4 and the frame 6 to prevent the orbiting scroll 4 from rotating. A suction pipe 12 communicating with the outside of the closed container 1 is connected to the fixed scroll 5, and a discharge port 1 communicating with the inside of the closed container 1 is connected to the center of the fixed scroll 5.
3 is provided. Further, a discharge pipe 14 projects between the compression mechanism 2 and the electric motor section 3 of the closed container 1.
一方、旋回スクロール４とフレーム６との間には、圧縮
機構２の圧縮途中の圧力を導入し、その圧力により旋回
スクロール４を固定スクロール５へ押し付ける背圧Ｎ１
５が形成されている。On the other hand, pressure during compression of the compression mechanism 2 is introduced between the orbiting scroll 4 and the frame 6, and the back pressure N1 presses the orbiting scroll 4 against the fixed scroll 5 by the pressure.
5 is formed.
密閉容器１の底部には、主軸受８、旋回軸受９へ給油す
る潤滑油の油溜シ１６が形成されている。また、電動機
軸１０およびクランク軸７には潤滑油を主軸受８、旋回
軸受９へ導く給油孔１７が設けられ、かつ電動機軸１０
の軸端には油溜＃）１６の潤滑油を吸い上げて前記給油
孔１７へ送り込む給油パイプ１８が取付けられている。A lubricating oil reservoir 16 for supplying oil to the main bearing 8 and the swing bearing 9 is formed at the bottom of the closed container 1 . Further, the motor shaft 10 and the crankshaft 7 are provided with an oil supply hole 17 for guiding lubricating oil to the main bearing 8 and the swing bearing 9.
An oil supply pipe 18 for sucking up lubricating oil from the oil reservoir #) 16 and sending it to the oil supply hole 17 is attached to the shaft end of the oil reservoir #).
而して、電動機部３０回転によりクランク軸７が回転す
ると、旋回スクロール４は自転を防止されて固定スクロ
ール５に対して旋回運動を行い、吸入管１２から吸入し
た冷媒ガスを圧縮し吐出口１３から密閉容器１内に吐出
する。吐出された冷媒ガスは、圧縮機構２と密閉容器１
とで形成される通路１９を通って圧縮機構２の下部へ流
れ、吐出管１４よシ流出する。また、この過程において
、油溜り１ｂの潤滑油が密閉容器１内の高圧圧力と背圧
室１５内の圧力（中間圧力）との差圧により給油パイプ
１８へ吸い上げられ、給油孔１７を通って主軸受８、旋
回軸受９へ給油される。When the crankshaft 7 rotates due to the rotation of the electric motor section 30, the orbiting scroll 4 is prevented from rotating and performs an orbiting motion relative to the fixed scroll 5, compressing the refrigerant gas sucked in from the suction pipe 12, and compressing the refrigerant gas sucked from the suction pipe 12. It is discharged into the closed container 1 from the container. The discharged refrigerant gas is transferred to the compression mechanism 2 and the closed container 1.
It flows to the lower part of the compression mechanism 2 through a passage 19 formed by the above, and flows out through the discharge pipe 14. In addition, during this process, the lubricating oil in the oil reservoir 1b is sucked up into the oil supply pipe 18 due to the pressure difference between the high pressure inside the closed container 1 and the pressure (intermediate pressure) inside the back pressure chamber 15, and passes through the oil supply hole 17. The main bearing 8 and the swing bearing 9 are supplied with oil.
次に前記給油パイプ１８の取付構造を第２図により詳し
く説明する。前記電動機軸１０の軸端部には給油パイプ
１８の嵌合穴２０が設けられ、給油パイプ１８の前記嵌
合穴１８への嵌合部には２つの圧入、焼バメ部２１ａ、
２１ｂが軸方向に沿って形成されている。前記嵌合穴２
０はストレートに形成され、前記圧入、焼バメ部２１ａ
、２１ｂは嵌合穴２０の穴径よシ大きくなっている。ま
た、圧入、焼バメ部は成形加工により形成されている。Next, the mounting structure of the oil supply pipe 18 will be explained in detail with reference to FIG. 2. A fitting hole 20 for the oil supply pipe 18 is provided at the shaft end of the motor shaft 10, and the fitting part of the oil supply pipe 18 into the fitting hole 18 has two press-fit parts, a shrink fit part 21a,
21b is formed along the axial direction. Said fitting hole 2
0 is formed straight, and the press-fit and shrink-fit portion 21a
, 21b are larger than the hole diameter of the fitting hole 20. Further, the press-fit and shrink-fit portions are formed by molding.
そして、給油パイプ１８は、圧入、焼バメ部を有する嵌
合部を電動機軸１０の嵌合穴２０に圧入し、焼バツする
ことで、電動機軸１０に取付けられている。The oil supply pipe 18 is attached to the motor shaft 10 by press-fitting a fitting portion having a shrink fit portion into the fitting hole 20 of the motor shaft 10 and shrinking it.
前記電動機軸１０の嵌合部２０と給油パイプ１８嵌合部
の嵌め合い部において、給油パイプ１８嵌合部に形成さ
れた圧入、焼バメ部２１ａ、２１ｂは、圧入、焼バメに
よりて嵌め合い面圧分布を生ずる。この嵌め合い面圧は
端部で大きく、中央部で小さくなる。従って、締め代が
小の場合１ｃは、圧入、焼バメ部２１ａ、２１ｂが弾性
域のため、第３図に示すようにほぼ均等の面圧Ｐが確保
される。また、締め代が大の場合ｖｃｒｉ、第４因に示
すように各圧入、焼バメ部２１ａ、２１ｂの端部に生ず
る面圧Ｐ′で給油パイプ１８は保持される。At the fitting portion between the fitting portion 20 of the motor shaft 10 and the fitting portion of the oil supply pipe 18, the press-fit and shrink-fit portions 21a and 21b formed in the fitting portion of the oil supply pipe 18 fit together by press-fit and shrink-fit. Generates surface pressure distribution. This fitting surface pressure is large at the ends and small at the center. Therefore, when the interference is small, the press-fitted and shrink-fitted portions 21a and 21b are in the elastic range, so a substantially uniform surface pressure P is ensured as shown in FIG. Further, when the interference is large, vcri, the oil supply pipe 18 is held by the surface pressure P' generated at the ends of the press-fit and shrink-fit portions 21a and 21b, as shown in the fourth factor.
尚、第４図の破線は従来技術における締め代大の場合の
面圧を示し、本実施例による面圧Ｐの方が３倍大きい、
つま９３倍の保持力を有゛している。Incidentally, the broken line in FIG. 4 shows the contact pressure in the case of a large interference in the conventional technique, and the contact pressure P according to this embodiment is three times larger.
It has 93 times the holding power of a claw.
以上の如く、本実施例においては、広範囲な締め代でも
十分な保持力が得られる。また、給油パイプ１８として
は、その嵌合部に圧入、焼バメ部を形成するだけで、切
削等の機械加工を行う必要がないので、薄肉パイプを使
用できる。さらに、電動機軸１０の嵌合穴２０は単なる
ストレートの一穴とすればよいので、その穴加工を短時
間で行える。As described above, in this embodiment, sufficient holding force can be obtained even with a wide range of interference. Moreover, as the oil supply pipe 18, a thin-walled pipe can be used, since it is only necessary to press fit into the fitting part and form a shrink fit part, and there is no need to perform machining such as cutting. Furthermore, since the fitting hole 20 of the motor shaft 10 may be a simple straight hole, the hole can be machined in a short time.
第５図は給油パイプ取付部の他の実施例を示し、給油パ
イプ１８の後側の圧入、焼バメ部２１ｄの締め代を前側
の圧入、焼バメ部２１Ｃの締め代上りも大きくしたもの
である。FIG. 5 shows another embodiment of the oil supply pipe attachment part, in which the rear side of the oil supply pipe 18 is press-fitted, the shrinkage fit part 21d is press-fitted on the front side, and the shrinkage fit part 21C has a larger tightening allowance. be.
この実施例では、圧入（ｆｉバメ）初期において第１圧
入力を小さくできて、給油パイプ１８０座屈変形を防止
するのに有効である。In this embodiment, the first press force can be reduced at the initial stage of press-fitting (fi-fitting), which is effective in preventing buckling deformation of the oil supply pipe 180.
尚、上記の実施例は、いずれも圧入、焼バメ部を２箇所
形成した例を示したが、これを３箇所以上形成してもよ
いことは勿論である。また、本発明と併用して接着剤を
用いるようにしてもよい。In the above embodiments, the press-fit and shrink-fit portions are formed at two locations, but it goes without saying that three or more locations may be formed. Further, an adhesive may be used in combination with the present invention.
本発明によれば、給油パイプ嵌合穴の加工時間を短縮で
きると共に、給油パイプとして薄肉パイプを使用でき、
かつ広範囲な締め代でも保持力の低下を防止できる。According to the present invention, it is possible to shorten the machining time for the oil supply pipe fitting hole, and also to use a thin-walled pipe as the oil supply pipe.
Moreover, it is possible to prevent a decrease in holding force even with a wide range of tightening margins.
第１図は本発明のスクロール圧縮機の一実施例を示す縦
断面図、第２図は第１図における給油パイプ取付部の拡
大断面図、第３図は締め代小の場合の嵌め合い面圧分布
を示す図、第４図は締め代大の場合の嵌め合い面圧分布
を示す図、第５図は給油パイプ取付部の他の例を示す断
面図である。
１・・・密閉容器 ２・・・圧縮機構 ３・・・電
動機部 ４・・・旋回スクロール ５・・・固定ス
クロール ７・・・クランク軸 ８・・・主軸受
９・・・旋回軸受 １０・・・電動機軸 １５・
・・背圧室１６・・・油溜り １７・・・給油孔
１８・・・給油パイプ ２０ ・・・嵌曾穴 ２１
ａ、２１ｂ、２１ｃｓ２１ｄ・・・圧入、焼バメ部。
審１ｒｓ１Fig. 1 is a longitudinal sectional view showing an embodiment of the scroll compressor of the present invention, Fig. 2 is an enlarged sectional view of the oil supply pipe attachment part in Fig. 1, and Fig. 3 is a fitting surface in the case of a small interference. FIG. 4 is a diagram showing the fitting surface pressure distribution when the interference is large, and FIG. 5 is a sectional view showing another example of the oil supply pipe attachment part. 1... Airtight container 2... Compression mechanism 3... Electric motor section 4... Orbiting scroll 5... Fixed scroll 7... Crankshaft 8... Main bearing
9... Swivel bearing 10... Electric motor shaft 15.
... Back pressure chamber 16 ... Oil reservoir 17 ... Oil supply hole
18... Oil supply pipe 20... Fitting hole 21
a, 21b, 21cs21d...press fit, shrink fit part. Referee 1rs1
Claims (3)
び固定スクロールを組み合わせた圧縮機構を密閉容器内
の上方に、かつ圧縮機構をクランク軸を介して駆動する
電動機を密閉容器内の下方にそれぞれ配設し、圧縮機構
の吐出口を密閉容器内に連通させて該密閉容器内を高圧
雰囲気とする一方、旋回スクロールと該旋回スクロール
を支持するフレームとの間に、圧縮機構の圧縮途中の圧
力を導入し、その圧力により旋回スクロールを固定スク
ロールへ押し付ける背圧室を形成し、密閉容器の底部に
潤滑油の油溜りを形成し、密閉容器内の高圧圧力と前記
背圧室内の圧力との差圧を利用して前記油溜りの潤滑油
を、電動機軸の軸端に取付けた給油パイプおよびクラン
ク軸内に設けた給油孔を通して旋回軸受、主軸受へ給油
するようにして成るスクロール圧縮機において、前記電
動機の軸端部に給油パイプを嵌合させる嵌合穴を設け、
かつ給油パイプに前記嵌合穴の穴径より大きい圧入、焼
バメ部を軸方向に２箇所以上形成し、給油パイプの前記
圧入、焼バメ部を嵌合穴に圧入し、焼バメすることによ
り該給油パイプを電動機軸に取付けたことを特徴とする
スクロール圧縮機。1. A compression mechanism that combines an orbiting scroll with a spiral wrap and a fixed scroll is installed above the airtight container, and an electric motor that drives the compression mechanism via a crankshaft is installed below the airtight container. The discharge port of the airtight container is communicated with the inside of the closed container to create a high-pressure atmosphere inside the closed container, while the pressure in the middle of compression by the compression mechanism is introduced between the orbiting scroll and the frame that supports the orbiting scroll, and the pressure is A back pressure chamber is formed that presses the orbiting scroll against the fixed scroll, a lubricating oil reservoir is formed at the bottom of the closed container, and the pressure difference between the high pressure inside the closed container and the pressure inside the back pressure chamber is used. In a scroll compressor configured to supply lubricating oil from the oil reservoir to a swing bearing and a main bearing through an oil supply pipe attached to the shaft end of the motor shaft and an oil supply hole provided in the crankshaft, the shaft end of the motor A fitting hole is provided in the part to fit the oil supply pipe,
and by forming two or more press-fit and shrink-fit parts in the axial direction in the oil supply pipe that are larger than the hole diameter of the fitting hole, and press-fit and shrink-fit the press-fit and shrink-fit parts of the oil supply pipe into the fitting hole. A scroll compressor characterized in that the oil supply pipe is attached to an electric motor shaft.
は薄肉パイプで形成され、かつ前記圧入、焼バメ部は成
形加工により形成されていることを特徴とするスクロー
ル圧縮機。2. The scroll compressor according to claim 1, wherein the oil supply pipe is formed of a thin-walled pipe, and the press-fit and shrink-fit portions are formed by molding.
記圧入、焼バメ部の締め代は、第１締め代より第２締め
代の方が大きくなっていることを特徴とするスクロール
圧縮機。3. The scroll compressor according to claim 1 or 2, wherein the second interference of the press-fit and shrink-fit portion is larger than the first interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP984187A JPH076513B2 (en) | 1987-01-21 | 1987-01-21 | Mounting structure of refueling pipe in scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP984187A JPH076513B2 (en) | 1987-01-21 | 1987-01-21 | Mounting structure of refueling pipe in scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63179193A true JPS63179193A (en) | 1988-07-23 |
| JPH076513B2 JPH076513B2 (en) | 1995-01-30 |
Family
ID=11731348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP984187A Expired - Lifetime JPH076513B2 (en) | 1987-01-21 | 1987-01-21 | Mounting structure of refueling pipe in scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH076513B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009024643A (en) * | 2007-07-20 | 2009-02-05 | Daikin Ind Ltd | Compressor |
| CN104422198A (en) * | 2013-08-20 | 2015-03-18 | 珠海格力电器股份有限公司 | Compressor and control method of oil pump thereof |
-
1987
- 1987-01-21 JP JP984187A patent/JPH076513B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009024643A (en) * | 2007-07-20 | 2009-02-05 | Daikin Ind Ltd | Compressor |
| CN104422198A (en) * | 2013-08-20 | 2015-03-18 | 珠海格力电器股份有限公司 | Compressor and control method of oil pump thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH076513B2 (en) | 1995-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |