JPH07332265A - Hermetic scroll compressor - Google Patents
Hermetic scroll compressorInfo
- Publication number
- JPH07332265A JPH07332265A JP12857394A JP12857394A JPH07332265A JP H07332265 A JPH07332265 A JP H07332265A JP 12857394 A JP12857394 A JP 12857394A JP 12857394 A JP12857394 A JP 12857394A JP H07332265 A JPH07332265 A JP H07332265A
- Authority
- JP
- Japan
- Prior art keywords
- electric motor
- refrigerant gas
- passage
- scroll
- frame
- 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.)
- Pending
Links
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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- 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
- 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
- F04C29/026—Lubricant separation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、密閉形スクロール圧縮
機に係り、特に、吐出ガスに伴い潤滑油が圧縮機の外へ
出ていく、いわゆる、油上がりを防止するための改良に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic scroll compressor, and more particularly, to an improvement for preventing so-called oil rising, in which lubricating oil goes out of the compressor with discharge gas.
【０００２】[0002]
【従来の技術】吐出ガスと潤滑油の分離については、例
えば、特開平5−44667号に記載されている。特開平5−4
4667号公報では、吐出ガスを電動機下側のコイルエンド
部に導く噴射装置を設けた構造としている。2. Description of the Related Art Separation of discharge gas and lubricating oil is described in, for example, Japanese Patent Application Laid-Open No. 5-44667. JP 5-4
In Japanese Patent No. 4667, a structure is provided in which an injection device that guides the discharge gas to the coil end portion on the lower side of the electric motor is provided.
【０００３】[0003]
【発明が解決しようとする課題】上記従来技術におい
て、吐出ガス噴射装置による方法では、部品点数が増
え、取付け部の信頼性を十分確認する必要が生じ、また
コスト増につながるという問題があった。In the above-mentioned prior art, the method using the discharge gas injection device has a problem that the number of parts is increased, it is necessary to sufficiently check the reliability of the mounting portion, and the cost is increased. .
【０００４】[0004]
【課題を解決するための手段】本発明は、フレームと密
閉容器内壁で形成された通路内に、通路を複数に分岐す
る手段を有し、その分岐された通路の少なくとも一つの
通路の方向が、密閉容器の中心軸と対向しており、他の
分岐された通路の少なくとも一つの通路に冷媒ガス流量
を変える絞り部を有し、さらに前記中部空間において前
記分岐部と前記吐出管の間に冷媒ガスの流れを阻害する
手段を持つ構造とすることにより達成される。The present invention has means for branching a plurality of passages in a passage formed by a frame and an inner wall of a closed container, and the direction of at least one of the branched passages is , Facing the central axis of the closed container, having a throttle portion for changing the refrigerant gas flow rate in at least one of the other branched passages, and further between the branch portion and the discharge pipe in the middle space. This is achieved by adopting a structure having means for inhibiting the flow of the refrigerant gas.
【０００５】[0005]
【作用】吸入口より冷媒ガスを吸入し、固定スクロー
ル，旋回スクロールで形成される圧縮空間を中心に移動
させ、圧縮空間の容積を減少して冷媒ガスを圧縮し固定
スクロールに設けた吐出口より潤滑油を含んだ圧縮ガス
を密閉容器内の上部空間へ吐出する。吐出された冷媒ガ
スはフレーム外周に設けられた通路を通るが、流れの速
度を変える絞り部によりせき止められ、分岐された複数
の通路のうち密閉容器の中心軸と対向する方向の通路よ
り、中心方向にフレーム外壁へ向けて噴出され、フレー
ム壁面との衝突により冷媒ガスに含まれていた潤滑油が
粗大化される。衝突後の冷媒ガスはフレームに設けられ
た仕切り部により速度方向が著しく変化される。このた
め潤滑油は遠心力により冷媒ガスより分離し下方に落下
する。さらに絞り部より電動機側へも必要量の冷媒ガス
を導き、電動機の冷却を行うことができる。[Function] The refrigerant gas is sucked through the suction port and moved around the compression space formed by the fixed scroll and the orbiting scroll, the volume of the compression space is reduced, the refrigerant gas is compressed, and the discharge port is provided in the fixed scroll. Compressed gas containing lubricating oil is discharged to the upper space in the closed container. The discharged refrigerant gas passes through a passage provided on the outer periphery of the frame, but is blocked by a throttle that changes the flow velocity, and the center of the branched passages in the direction opposite to the central axis of the hermetic container In a direction toward the outer wall of the frame, the lubricating oil contained in the refrigerant gas is coarsened due to the collision with the wall surface of the frame. The velocity direction of the refrigerant gas after the collision is remarkably changed by the partition portion provided on the frame. Therefore, the lubricating oil is separated from the refrigerant gas by the centrifugal force and drops downward. Further, the required amount of refrigerant gas can be introduced from the throttle portion to the electric motor side to cool the electric motor.
【０００６】以上より、潤滑油を含んだ圧縮ガスを効率
よく潤滑油と冷媒ガスに分離し、電動機の冷却を確実に
行うことが可能となる。As described above, the compressed gas containing the lubricating oil can be efficiently separated into the lubricating oil and the refrigerant gas, and the electric motor can be surely cooled.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面を用いて説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【０００８】図１ないし図３は本発明の一実施例を示
す。1 to 3 show an embodiment of the present invention.
【０００９】図１は、本発明を実施した密閉形スクロー
ル圧縮機の全体の断面図を示す。また図２は図１におけ
るＡ部の部分拡大図を示す。更に図３は図１におけるＢ
−Ｂ矢視図を示す。図１に於いて、密閉容器１内の上方
には圧縮機部２が、下方には電動機３がそれぞれ配設さ
れ、また密閉容器１の底部には潤滑の油溜まり４が形成
されている。圧縮機部２は、台板上に渦巻き状のラップ
５ａを有する固定スクロール５と、同じく台板上に渦巻
き状のラップ６ａを有する旋回スクロール６と、固定ス
クロール５と一体化され旋回スクロール６を支持するフ
レーム７とを具え、固定スクロール５及び旋回スクロー
ル６のラップ同士を噛み合わせた構成となっている。ま
た旋回スクロール６とフレーム７との間には、旋回スク
ロール６の自転を防止するオルダム機構１９が設けられ
ている。電動機３は密閉容器１に圧入締結され、クラン
ク軸８を介して旋回スクロール６を旋回運動させるよう
になっている。クランク軸８はフレーム７に設けた主軸
受９と下部軸受１０とで支持され、そのクランクピンは
旋回スクロール６の背面に設けた旋回軸受１１と嵌合さ
れている。FIG. 1 is a sectional view of the entire hermetic scroll compressor embodying the present invention. FIG. 2 is a partially enlarged view of part A in FIG. Further, FIG. 3 shows B in FIG.
-A arrow B view is shown. In FIG. 1, a compressor section 2 is provided above the closed container 1, an electric motor 3 is provided below the closed container 1, and a lubricating oil reservoir 4 is formed at the bottom of the closed container 1. The compressor unit 2 includes a fixed scroll 5 having a spiral wrap 5a on a base plate, an orbiting scroll 6 having a spiral wrap 6a on the base plate, and an orbiting scroll 6 integrated with the fixed scroll 5. It has a supporting frame 7 and has a structure in which the wraps of the fixed scroll 5 and the orbiting scroll 6 are meshed with each other. An Oldham mechanism 19 that prevents the orbiting scroll 6 from rotating is provided between the orbiting scroll 6 and the frame 7. The electric motor 3 is press-fitted into the closed container 1 and fastened to rotate the orbiting scroll 6 through the crankshaft 8. The crankshaft 8 is supported by a main bearing 9 and a lower bearing 10 provided on the frame 7, and its crankpin is fitted with an orbiting bearing 11 provided on the back surface of the orbiting scroll 6.
【００１０】クランク軸８内には主軸受９，下部軸受１
０及び旋回軸受１１へ潤滑油を導く給油通路１２が設け
られ、電動機３の軸端には油溜まり４の潤滑油を吸い上
げて給油通路１２に送り込む給油装置２０が設けられて
いる。圧縮機部２は、電動機３で駆動されるクランク軸
８を介して旋回運動せしめられると、旋回スクロール
６，固定スクロール５により形成される空間（圧縮室）
がスクロールの中心方向に移動するに従い容積を減少
し、吸入した冷媒ガスを圧縮する。圧縮された冷媒ガス
は固定スクロールの台板の中央に設けられた吐出口１７
から密閉容器１内の上部空間１４へ吐出される。A main bearing 9 and a lower bearing 1 are provided in the crankshaft 8.
0 and the slewing bearing 11 are provided with a lubrication passage 12 for guiding the lubrication oil, and the shaft end of the electric motor 3 is provided with an lubrication device 20 that sucks up the lubrication oil in the oil sump 4 and sends it to the lubrication passage 12. When the compressor unit 2 is swung through a crank shaft 8 driven by an electric motor 3, a space (compression chamber) formed by the swiveling scroll 6 and the fixed scroll 5 is formed.
Decreases in volume toward the center of the scroll and compresses the sucked refrigerant gas. The compressed refrigerant gas is discharged through the discharge port 17 provided at the center of the base plate of the fixed scroll.
Is discharged to the upper space 14 in the closed container 1.
【００１１】また、旋回スクロールの背面には圧縮行程
の冷媒ガスが導かれる中間圧室１３が形成されている。
中間圧室１３の圧力は冷媒ガスの吸入圧力と吐出圧力の
中間の圧力であり、スクロールの摺動部への給油は、吐
出圧力と中間室圧力の差圧を利用して行われる。潤滑油
は給油装置２０より給油通路１２を通り、主軸受９，下
部軸受１０及び旋回軸受１１を潤滑した後、中間圧室１
３を経て圧縮室に流入し、冷媒ガスと混合した状態で固
定スクロール５の中央に設けた吐出口１７より密閉容器
１内の上部空間１４へ吐出される。An intermediate pressure chamber 13 into which the refrigerant gas in the compression stroke is introduced is formed on the back surface of the orbiting scroll.
The pressure in the intermediate pressure chamber 13 is an intermediate pressure between the suction pressure and the discharge pressure of the refrigerant gas, and the oil supply to the sliding portion of the scroll is performed by utilizing the differential pressure between the discharge pressure and the intermediate chamber pressure. The lubricating oil passes through the oil supply passage 12 from the oil supply device 20, lubricates the main bearing 9, the lower bearing 10 and the orbiting bearing 11, and then the intermediate pressure chamber 1
After flowing into the compression chamber through 3, the mixture is mixed with the refrigerant gas and discharged from the discharge port 17 provided in the center of the fixed scroll 5 to the upper space 14 in the closed container 1.
【００１２】フレーム７の外周部には、軸方向にのびる
溝を設け、密閉容器１の内壁とフレーム７との間に上部
空間１４と中部空間２３を連絡するガス通路１８を形成
している。ガス通路１８は、例えば、エンドミル加工に
より形成される。また、ガス通路１８内は、複数に分岐
し、その分岐された通路の少なくとも一つの通路の方向
が、密閉容器の中心軸と対向した分岐通路１８ａを形成
しており、他の分岐された通路の少なくとも一つは下方
に開口し、その出口はスリット状に開口し、流量を変え
る絞り部１８ｂを形成している。吐出ガスの一部はこの
分岐通路１８ａよりフレーム外壁へ向けて噴出されるよ
うになっており、他の一部は絞り部より下方へ向けて流
出するようになっている。またフレーム下部には分岐口
１８ａから吐出管１６への流れを阻害する仕切り部２２
が設けられている。A groove extending in the axial direction is provided on the outer peripheral portion of the frame 7, and a gas passage 18 that connects the upper space 14 and the middle space 23 is formed between the inner wall of the closed container 1 and the frame 7. The gas passage 18 is formed by, for example, end mill processing. Further, the gas passage 18 is divided into a plurality of branches, and at least one of the branched passages forms a branch passage 18a facing the central axis of the closed container, and the other branched passages are formed. At least one of which is opened downward and its outlet is opened in a slit shape to form a throttle portion 18b for changing the flow rate. A part of the discharged gas is ejected from the branch passage 18a toward the outer wall of the frame, and the other part is ejected downward from the throttle portion. Further, at the lower part of the frame, there is a partition part 22 for blocking the flow from the branch port 18a to the discharge pipe 16.
Is provided.
【００１３】圧縮機部２の下方の空間、即ち、フレーム
７の下部と電動機３の上部との中部空間２３を、電動機
３の下部空間２４と連通させるためのガス通路２１が電
動機３のコア部を部分的にカットすることによって、電
動機３と密閉容器１の内壁との間に形成されている。A gas passage 21 for communicating a space below the compressor portion 2, that is, a middle space 23 between the lower portion of the frame 7 and an upper portion of the electric motor 3 with a lower space 24 of the electric motor 3 has a core portion of the electric motor 3. Is partially cut so that it is formed between the electric motor 3 and the inner wall of the closed container 1.
【００１４】なお、図４中、１５は密閉容器１を貫通し
て、密閉容器１の外部から圧縮機部２の吸入側に冷媒ガ
スを導くための吸入管である。１６は密閉容器１内に圧
縮機部２と電動機３との間の空間に接続された吐出管で
あり、この吐出管から圧縮された冷媒ガスが密閉容器１
の外部へ流出する。In FIG. 4, reference numeral 15 denotes a suction pipe which penetrates the closed container 1 and guides the refrigerant gas from the outside of the closed container 1 to the suction side of the compressor section 2. Reference numeral 16 is a discharge pipe connected to the space between the compressor unit 2 and the electric motor 3 in the closed container 1, and the refrigerant gas compressed from this discharge pipe is closed container 1
Spill to the outside.
【００１５】次に動作について図１から図４を用いて説
明する。Next, the operation will be described with reference to FIGS. 1 to 4.
【００１６】図１において、電動機３によりクランク軸
８を介して旋回スクロール６が旋回運動すると、吸入管
１５から吸入された冷媒ガスは固定スクロール５と旋回
スクロール６との作用で圧縮された後、固定スクロール
５の中央に設けられた吐出口１７から潤滑油と混合した
状態で密閉容器１の上部空間１４に吐出される。In FIG. 1, when the orbiting scroll 6 orbits by the electric motor 3 via the crankshaft 8, the refrigerant gas sucked from the suction pipe 15 is compressed by the action of the fixed scroll 5 and the orbiting scroll 6, and then, It is discharged from the discharge port 17 provided at the center of the fixed scroll 5 into the upper space 14 of the closed container 1 in a state of being mixed with the lubricating oil.
【００１７】この吐出された冷媒ガスはフレーム７の外
周に設けられたガス通路１８を通り下方に導かれ、冷媒
ガスは図２に示すように分岐し、一方の冷媒ガスは、ガ
ス通路１８の途中の分岐通路１８ａからフレーム７外壁
へ噴出されフレーム７外壁と衝突する。この衝突によ
り、冷媒ガスに混合されていた潤滑油は粗大化される。
衝突後の冷媒ガスは図２及び図３に示すように、フレー
ム７に設けられた仕切り部２２により速度方向が著しく
変化される。このため粗大化された潤滑油は遠心力によ
り冷媒ガスより分離して落下する。The discharged refrigerant gas is guided downward through a gas passage 18 provided on the outer periphery of the frame 7, the refrigerant gas is branched as shown in FIG. 2, and one of the refrigerant gases is in the gas passage 18. It is ejected from the branch passage 18a on the way to the outer wall of the frame 7 and collides with the outer wall of the frame 7. Due to this collision, the lubricating oil mixed with the refrigerant gas is coarsened.
As shown in FIGS. 2 and 3, the velocity direction of the refrigerant gas after the collision is remarkably changed by the partition portion 22 provided in the frame 7. Therefore, the coarsened lubricating oil is separated from the refrigerant gas by the centrifugal force and drops.
【００１８】冷媒ガスはそのまま吐出管１６を介して密
閉容器１の外部へ流出し、潤滑油は自重で油溜まり４へ
流下する。The refrigerant gas directly flows out of the closed container 1 through the discharge pipe 16, and the lubricating oil flows down to the oil sump 4 by its own weight.
【００１９】一方、フレーム７の外周部の通路１８のス
リット状の出口１８ｂより流出した冷媒ガスは、電動機
３を冷却した後、吐出管１６より密閉容器１の外部へ流
出する。On the other hand, the refrigerant gas flowing out from the slit-shaped outlet 18b of the passage 18 in the outer peripheral portion of the frame 7 cools the electric motor 3 and then flows out of the closed container 1 through the discharge pipe 16.
【００２０】本実施例によれば、冷媒ガス中に含まれる
潤滑油を分離して油溜まりに戻す作用が良好に行われ、
いわゆる、油上がりを効果的に、且つ簡単な構造で防止
でき、また、電動機の冷却を確実に行うことが可能であ
る。According to this embodiment, the action of separating the lubricating oil contained in the refrigerant gas and returning it to the oil reservoir is favorably performed,
So-called oil spill can be effectively prevented with a simple structure, and the electric motor can be reliably cooled.
【００２１】図４は本発明の他の実施例を示す中部空間
部の縦断面図である。FIG. 4 is a vertical sectional view of a middle space portion showing another embodiment of the present invention.
【００２２】図４において分岐通路１８ａの流れ方向
に、平面により構成された阻害部２５が、設けられてい
る。本阻害部により、衝突前後の冷媒ガス速度変化が著
しく大きくなるため、冷媒ガスと潤滑油の分離効率が高
まり、油上がりを効果的に防止できる。In FIG. 4, an inhibition portion 25 formed of a flat surface is provided in the flow direction of the branch passage 18a. The change in the refrigerant gas velocity before and after the collision is significantly increased by the inhibition portion, so that the efficiency of separating the refrigerant gas and the lubricating oil is increased and the oil rising can be effectively prevented.
【００２３】また阻害部２５の表面上に凹凸部を設ける
ことにより、分離効率をさらに高めることが可能であ
る。Further, by providing the uneven portion on the surface of the inhibition portion 25, it is possible to further improve the separation efficiency.
【００２４】図５は本発明の他の実施例を示す。図５
は、中部空間部の縦断面図である。FIG. 5 shows another embodiment of the present invention. Figure 5
[Fig. 4] is a vertical cross-sectional view of a central space portion.
【００２５】図５において分岐通路１８ａの出口部まわ
りの空間体積２６を小さくし、吐出管回りの空間体積２
７を大きくしている。これにより、吐出管回りの冷媒ガ
ス速度が、低下するため、冷媒ガスより粗大化された潤
滑油粒子の分離効果がその自重により、著しく高まり、
油上がりを効果的に防止できる。In FIG. 5, the space volume 26 around the outlet of the branch passage 18a is reduced to a space volume 2 around the discharge pipe.
7 is increased. As a result, the speed of the refrigerant gas around the discharge pipe decreases, so that the effect of separating the lubricating oil particles coarser than the refrigerant gas is significantly increased by its own weight,
It is possible to effectively prevent oil from rising.
【００２６】[0026]
【発明の効果】本発明によれば、密閉形スクロール圧縮
機に於いて、圧縮された冷媒ガス中に含まれる潤滑油を
分離して油溜まりに戻す作用が良好に行われ、いわゆ
る、油上がりを効果的に、且つ簡単な構造で防止でき、
また、電動機の冷却を確実に行うことが可能である。According to the present invention, in the hermetic scroll compressor, the action of separating the lubricating oil contained in the compressed refrigerant gas and returning it to the oil sump is favorably performed. Can be effectively prevented with a simple structure,
In addition, it is possible to reliably cool the electric motor.
【図１】本発明の一実施例の密閉形スクロール圧縮機の
断面図。FIG. 1 is a cross-sectional view of a hermetic scroll compressor according to an embodiment of the present invention.
【図２】図１のＡ部の説明図。FIG. 2 is an explanatory view of a portion A of FIG.
【図３】図１のＢ−Ｂ矢視断面図。FIG. 3 is a sectional view taken along the line BB of FIG.
【図４】本発明の他の実施例の図３相当部の横断面図。FIG. 4 is a transverse sectional view of a portion corresponding to FIG. 3 of another embodiment of the present invention.
【図５】本発明の他の実施例を示す部分断面図。FIG. 5 is a partial sectional view showing another embodiment of the present invention.
１…密閉容器、２…圧縮機部、３…電動機、４…油溜ま
り、５…固定スクロール、６…旋回スクロール、７…フ
レーム、８…クランク軸、９…主軸受、１０…下部軸
受、１２…給油通路、１３…中間圧室、１４…上部空
間、、１５…吸入管、１６…吐出管、１７…吐出口、１
８…ガス通路、１９…オルダム機構、２０…給油装置、
２２…仕切り部。DESCRIPTION OF SYMBOLS 1 ... Airtight container, 2 ... Compressor part, 3 ... Electric motor, 4 ... Oil sump, 5 ... Fixed scroll, 6 ... Orbiting scroll, 7 ... Frame, 8 ... Crank shaft, 9 ... Main bearing, 10 ... Lower bearing, 12 ... Oil supply passage, 13 ... Intermediate pressure chamber, 14 ... Upper space, 15 ... Suction pipe, 16 ... Discharge pipe, 17 ... Discharge port, 1
8 ... Gas passage, 19 ... Oldham mechanism, 20 ... Refueling device,
22 ... Partition section.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 今村 浩幸 静岡県清水市村松390番地 日立清水エン ジニアリング株式会社内 (72)発明者 飯塚 泰成 東京都千代田区神田駿河台四丁目６番地 株式会社日立製作所空調システム事業部内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Imamura 390 Muramatsu, Shimizu City, Shizuoka Prefecture Hitachi Shimizu Engineering Co., Ltd. (72) Inventor Yasunari Iizuka 4-Chome Surugadai, Chiyoda-ku, Tokyo Hitachi Ltd Air conditioning system division
Claims (1)
を、下部に前記スクロール圧縮機構部を駆動するための
電動機を配置するとともに前記スクロール圧縮機構部を
支持するフレーム及び前記電動機を前記密閉容器の内壁
に密着させて収納することにより前記密閉容器内の空間
を前記スクロール圧縮機構部の上方の上部空間と前記ス
クロール圧縮機構部と前記電動機の間に形成される吐出
管が設けられた中部空間と前記電動機の下方の下部空間
とに分割した密閉形スクロール圧縮機において、 前記フレームと前記密閉容器の内壁で形成された通路内
に、前記通路を複数に分岐する手段を有し、その分岐さ
れた通路の少なくとも一つの通路の方向が、前記密閉容
器の中心軸と対向しており、他の分岐された通路の少な
くとも一つの通路に冷媒ガス流量を変える絞り部を有
し、さらに前記中部空間において前記分岐部と前記吐出
管の間に冷媒ガスの流れを阻害する手段を有することを
特徴とする密閉形スクロール圧縮機。1. A hermetically sealed container in which a scroll compression mechanism is disposed in an upper portion of a hermetic container, an electric motor for driving the scroll compression mechanism is disposed in a lower portion thereof, and a frame supporting the scroll compression mechanism and the electric motor are disposed in the hermetically sealed container. The space inside the hermetically sealed container is housed in close contact with the inner wall of the upper space above the scroll compression mechanism section and the middle space provided with a discharge pipe formed between the scroll compression mechanism section and the electric motor. In a hermetic scroll compressor divided into a lower space below the electric motor, a passage formed by the frame and the inner wall of the hermetic container has a means for branching the passage into a plurality of branches. The direction of at least one of the passages is opposed to the central axis of the closed container, and the refrigerant is introduced into at least one of the other branched passages. A hermetic scroll compressor having a throttle portion for changing a gas flow rate, and further having means for inhibiting a flow of a refrigerant gas between the branch portion and the discharge pipe in the middle space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12857394A JPH07332265A (en) | 1994-06-10 | 1994-06-10 | Hermetic scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12857394A JPH07332265A (en) | 1994-06-10 | 1994-06-10 | Hermetic scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07332265A true JPH07332265A (en) | 1995-12-22 |
Family
ID=14988101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12857394A Pending JPH07332265A (en) | 1994-06-10 | 1994-06-10 | Hermetic scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07332265A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060030306A (en) * | 2004-10-05 | 2006-04-10 | 엘지전자 주식회사 | A scroll compressor |
| US7044723B2 (en) * | 2003-09-10 | 2006-05-16 | Fujitsu General Limited | Scroll compressor having a throttle pin moving in the longitudinal hole of the oil supply passage |
| WO2009091876A1 (en) * | 2008-01-17 | 2009-07-23 | Bitzer Scroll Inc. | Scroll compressor suction flow path & bearing arrangement features |
| JP2009228434A (en) * | 2008-03-19 | 2009-10-08 | Sanyo Electric Co Ltd | Scroll compressor |
| US7771180B2 (en) | 2007-02-23 | 2010-08-10 | Lg Electronics Inc. | Compressor and oil separation device therefor |
| US7862313B2 (en) | 2007-01-15 | 2011-01-04 | Lg Electronics Inc. | Compressor and oil separating device therefor |
| US7942656B2 (en) | 2007-03-21 | 2011-05-17 | Lg Electronics Inc. | Compressor and device for reducing vibration therefor |
| EP2327882A2 (en) * | 2008-09-09 | 2011-06-01 | Sanden Corporation | Hermetic compressor |
| WO2013142494A1 (en) * | 2012-03-23 | 2013-09-26 | Bitzer Kühlmaschinenbau Gmbh | Compressor with oil return passage formed between motor and shell |
| EP2103808B1 (en) * | 2008-03-19 | 2020-05-13 | Sanyo Electric Co., Ltd. | Scroll compressor |
-
1994
- 1994-06-10 JP JP12857394A patent/JPH07332265A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7044723B2 (en) * | 2003-09-10 | 2006-05-16 | Fujitsu General Limited | Scroll compressor having a throttle pin moving in the longitudinal hole of the oil supply passage |
| KR20060030306A (en) * | 2004-10-05 | 2006-04-10 | 엘지전자 주식회사 | A scroll compressor |
| US7862313B2 (en) | 2007-01-15 | 2011-01-04 | Lg Electronics Inc. | Compressor and oil separating device therefor |
| US7771180B2 (en) | 2007-02-23 | 2010-08-10 | Lg Electronics Inc. | Compressor and oil separation device therefor |
| US7942656B2 (en) | 2007-03-21 | 2011-05-17 | Lg Electronics Inc. | Compressor and device for reducing vibration therefor |
| WO2009091876A1 (en) * | 2008-01-17 | 2009-07-23 | Bitzer Scroll Inc. | Scroll compressor suction flow path & bearing arrangement features |
| US7878780B2 (en) | 2008-01-17 | 2011-02-01 | Bitzer Kuhlmaschinenbau Gmbh | Scroll compressor suction flow path and bearing arrangement features |
| JP2011510213A (en) * | 2008-01-17 | 2011-03-31 | ビッツァー クールマシーネンバウ ゲーエムベーハー | Scroll compressor having suction flow path |
| JP2009228434A (en) * | 2008-03-19 | 2009-10-08 | Sanyo Electric Co Ltd | Scroll compressor |
| EP2103808B1 (en) * | 2008-03-19 | 2020-05-13 | Sanyo Electric Co., Ltd. | Scroll compressor |
| EP2327882A2 (en) * | 2008-09-09 | 2011-06-01 | Sanden Corporation | Hermetic compressor |
| CN102144097A (en) * | 2008-09-09 | 2011-08-03 | 三电有限公司 | Hermetic compressor |
| EP2327882A4 (en) * | 2008-09-09 | 2012-07-18 | Sanden Corp | Hermetic compressor |
| WO2013142494A1 (en) * | 2012-03-23 | 2013-09-26 | Bitzer Kühlmaschinenbau Gmbh | Compressor with oil return passage formed between motor and shell |
| US9181949B2 (en) | 2012-03-23 | 2015-11-10 | Bitzer Kuehlmaschinenbau Gmbh | Compressor with oil return passage formed between motor and shell |
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