JPH0374590A - Scroll type fluid machine - Google Patents
Scroll type fluid machineInfo
- Publication number
- JPH0374590A JPH0374590A JP21028989A JP21028989A JPH0374590A JP H0374590 A JPH0374590 A JP H0374590A JP 21028989 A JP21028989 A JP 21028989A JP 21028989 A JP21028989 A JP 21028989A JP H0374590 A JPH0374590 A JP H0374590A
- Authority
- JP
- Japan
- Prior art keywords
- high pressure
- pressure chamber
- scroll
- compression element
- fluid
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 32
- 238000005192 partition Methods 0.000 claims abstract description 18
- 238000007906 compression Methods 0.000 claims description 49
- 230000006835 compression Effects 0.000 claims description 46
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 26
- 239000010687 lubricating oil Substances 0.000 description 11
- 239000013256 coordination polymer Substances 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Landscapes
- Rotary Pumps (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）
本発明は主として冷凍装置に使用するスクロール形流体
機械に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a scroll-type fluid machine mainly used in a refrigeration system.
（従来の技術）
一般に、此種流体機械は、特開昭８１−９８９８７号公
報に記載され、第３図に示している通り、密閉ケーシン
グ（Ｋ）内の上部に、固定スクロール（Ａ）とハウジン
グ（Ｂ）に支持される可動スクロール（Ｃ）とから成る
圧縮要素（Ｄ）を配置し、又、前記ケーシング（Ｋ）内
の下部に、駆動軸（Ｅ）を介して前記可動スクロール（
Ｃ）を駆動するモータ（Ｆ）を配置する一方、前記ケー
シング（Ｋ）の土壁に吸入管（Ｇ）を開口させ、又、固
定スクロール（Ａ）の上部に、前記吸入管（Ｇ）と連通
ずる吸入口（ａ＋ ）と吐出口（ａ２）とを設けて、ケ
ーシング（Ｋ）内における上側を第１高圧室（Ｈ）とし
、又、前記各スクロールの一側部に連通路（Ｉ）を設け
て、ケーシング（Ｋ）内における前記圧縮要素（Ｄ）の
下側を第２高圧室（Ｊ）とし、この第２高圧室（Ｊ）に
吐出管（Ｌ）を設けている。(Prior Art) In general, this type of fluid machine is described in Japanese Patent Application Laid-open No. 81-98987, and as shown in FIG. A compression element (D) consisting of a movable scroll (C) supported by a housing (B) is disposed, and the movable scroll (D) is disposed in the lower part of the casing (K) via a drive shaft (E).
The suction pipe (G) is opened in the earthen wall of the casing (K), and the suction pipe (G) and the suction pipe (G) are arranged in the upper part of the fixed scroll (A). A communicating suction port (a+) and a discharge port (a2) are provided, and the upper side in the casing (K) is defined as a first high pressure chamber (H), and a communicating path (I) is provided at one side of each scroll. A second high pressure chamber (J) is provided below the compression element (D) in the casing (K), and a discharge pipe (L) is provided in this second high pressure chamber (J).
（発明が解決しようとする課題）
所が、この従来の流体機械は、吸入管ＣＧ）と、圧縮要
素における固定スクロール（Ａ）とが、高温となる第１
高圧室（Ｈ）内に配置されているため、前記圧縮要素（
Ｄ）内に導入する低温の吸入流体が、前記高圧室（Ｈ）
からの熱により過熱されて、圧縮要素での圧縮効率が大
幅に低下する問題があった。(Problem to be Solved by the Invention) However, in this conventional fluid machine, the suction pipe CG) and the fixed scroll (A) in the compression element are heated to a high temperature.
Since it is arranged in the high pressure chamber (H), the compression element (
D) The low temperature suction fluid introduced into the high pressure chamber (H)
There was a problem in that the compression efficiency in the compression element was significantly reduced due to overheating due to the heat from the compressor.
本発明は以上の問題点に鑑み発明したもので、目的は、
圧縮要素内に導入する低温の吸入流体が、高圧室からの
熱によって過熱されるのを防止でき、圧縮効率を向上し
ようとする点にある。The present invention was invented in view of the above problems, and its purpose is to:
The aim is to prevent the low-temperature suction fluid introduced into the compression element from being overheated by heat from the high pressure chamber, thereby improving compression efficiency.
（課題を解決するための手段）
しかして、本発明は、固定スクロール（２）と、ハウジ
ング（４）に支持される可動スクロール（３）とから成
る圧縮要素（Ｐ）と、前記可動スクロール（３）を駆動
するモータ（６）とを備え、前記圧縮要素ＣＰ’）及び
モータ（６）をケーシング（１）に内装して成るスクロ
ール形流体機械において、前記ケーシング（１）に一対
の第１及び第２仕切体（１２）（１３）を設けて、低圧
室（１４）を画成して、この低圧室（１４）に前記圧縮
要素（Ｐ）を内装し、吸入管（１７）を開口させると共
に、前記固定スクロール（２）及びハウジング（４）の
各中心部に、前記仕切体（１２）（１３）を貫通して、
第１及び第２高圧室（１５）（１Ｂ）に露出する第１及
び第２突出部（２３）（４１）を設けて、前記第１高圧
室（１５）に露出する第１突出部（２３）に吐出口（２
４）を設けて、前記第１高圧室（１５）に開口させ、前
記第２高圧室（１ｅ）に露出する第２突出部（４１）に
、前記モータ（６）の駆動軸（５）を挿通させる一方、
前記第１及び第２高圧室（１５）（１６）を連通させ、
第２高圧室（１６）に吐出管（１９）を設けているもの
である。(Means for Solving the Problems) Accordingly, the present invention provides a compression element (P) consisting of a fixed scroll (2) and a movable scroll (3) supported by a housing (4), 3), and the compression element CP') and the motor (6) are housed in a casing (1). and second partitions (12) and (13) are provided to define a low pressure chamber (14), the compression element (P) is placed inside the low pressure chamber (14), and the suction pipe (17) is opened. and penetrate through the partitions (12) and (13) into the center of each of the fixed scroll (2) and the housing (4),
First and second protrusions (23) (41) exposed to the first and second high pressure chambers (15) (1B) are provided, and the first protrusion (23) exposed to the first high pressure chamber (15) is provided. ) to the discharge port (2
4), and a drive shaft (5) of the motor (6) is connected to a second protrusion (41) that opens into the first high pressure chamber (15) and is exposed to the second high pressure chamber (1e). While inserting the
communicating the first and second high pressure chambers (15) and (16);
A discharge pipe (19) is provided in the second high pressure chamber (16).
又、第１及び第２突出部（２３）（４１）のシール径を
ほぼ同径としたものである。Further, the seal diameters of the first and second protrusions (23) and (41) are approximately the same diameter.
（作用）
圧縮要素（Ｐ）は、仕切体（１２）（１３）により画成
された低圧室（１４）内にあって、この低圧室（１４）
内に開口する吸入管（１７）から圧縮要素（Ｐ）内に低
温の流体を吸入でき、又、圧縮要素（Ｐ）内で圧縮され
た高圧流体を、固定スクロール（２）に設けた第１突出
部（２３）の吐出口（２４）から第１高圧室（１５）に
吐出できるのであって、前記吸入管（１７）、固定スク
ロール（２）の低圧領域部及び可動スクロール（３）が
第１及び第２高圧室（１５）（１６）からの熱によって
過熱されるのを防止できるのである。(Function) The compression element (P) is located within the low pressure chamber (14) defined by the partitions (12) and (13), and is located within the low pressure chamber (14).
Low-temperature fluid can be sucked into the compression element (P) from the suction pipe (17) opening inward, and the high-pressure fluid compressed in the compression element (P) can be transferred to the first tube provided on the fixed scroll (2). The suction pipe (17), the low pressure region of the fixed scroll (2), and the movable scroll (3) can be discharged from the discharge port (24) of the protrusion (23) into the first high pressure chamber (15). This can prevent overheating due to heat from the first and second high pressure chambers (15) and (16).
又、固定スクロール（２）及びハウジング（４）の各中
心部から仕切体（１２）（１３）を貫通して第１及び第
２高圧室（１５）（１（３）に露出する第１及び第２突
出部（２３）（４１）のシール径がほぼ同径になってい
るため、第１及び第２高圧室（１５）（１Ｂ）から圧縮
要素（Ｐ）及びハウジング（４）に作用する押圧力をほ
ぼ同じにでき、前記圧縮要素（Ｐ）及びハウジング（４
）に対する強度上の負担を少なくできるのである。In addition, the first and second high pressure chambers (15) (1 (3) are exposed to the first and second high pressure chambers (15) (1 (3)) through the partitions (12) (13) from the respective centers of the fixed scroll (2) and the housing (4). Since the seal diameters of the second protrusions (23) and (41) are approximately the same diameter, the first and second high pressure chambers (15) and (1B) act on the compression element (P) and the housing (4). The pressing force can be made almost the same, and the compression element (P) and the housing (4
) can reduce the burden on strength.
（実施例）
図示した流体機械は、鏡板（２１）の−側平面に渦巻体
（２２）を下向きに突設した固定スクロール（２）と、
ハウジング（４）に支持され、鏡板（３１）の−側平面
に渦巻体（３２）を上向きに突設し、この渦巻体（３２
）を前記渦巻体（２２）と上下方向に噛合状に係合させ
た可動スクロール（３）とから成る圧縮要素（Ｐ）を、
密閉ケーシング（１）内の上方に配置すると共に、前記
ケーシング（１）内の下部に、駆動軸（５）を介して前
記可動スクロール（３）を駆動するモータ（６）を配置
し、前記駆動軸（５）の上部を、主軸受（７）を介して
前記ハウジング（４）の下部に支持し、前記下位の可動
スクロール（３）における他側面に筒状のボス部（３３
）を設けて、該ボス部（３３）を、前記駆動軸（５）の
上端部に設ける偏心軸部（５１）を介して前記駆動軸（
５）の上端部に連動させ、該駆動軸（５）の駆動により
前記可動スクロール（３）を公転駆動させる如く成すと
共に、前記偏心軸部（５１）と前記ボス部（３３）との
間に軸受（６）を設ける一方、前記駆動軸（５）に、該
駆動軸を軸方向に貫通する給油通路（９）を設けて、前
記ケーシング（１）内下部の油溜（１ａ）の油を、前記
給油通路（９）を介して前記主軸受（７）及び軸受（６
）に供給できるようにしている。尚、この油の供給は、
後記する如く前記ケーシング（１）内における前記ハウ
ジング（４）よりも下部側を高圧室とし、この高圧室の
圧力と、前記ハウジング（４）内の圧力との圧力差によ
り前記油溜（ｌａ）の油を前記給油通路（９）に供給す
る如くなしている。(Example) The illustrated fluid machine includes a fixed scroll (2) in which a spiral body (22) is provided downwardly protruding from the − side plane of an end plate (21);
A spiral body (32) is supported by the housing (4), and is provided with a spiral body (32) projecting upward from the − side plane of the end plate (31).
) and a movable scroll (3) that engages with the spiral body (22) in a vertically meshing manner,
A motor (6) for driving the movable scroll (3) via a drive shaft (5) is disposed above the sealed casing (1) and at the bottom of the casing (1). The upper part of the shaft (5) is supported by the lower part of the housing (4) via the main bearing (7), and a cylindrical boss part (33) is provided on the other side of the lower movable scroll (3).
), and the boss portion (33) is connected to the drive shaft (5) via an eccentric shaft portion (51) provided at the upper end of the drive shaft (5).
5) so that the movable scroll (3) is driven to revolve by driving the drive shaft (5), and there is a space between the eccentric shaft portion (51) and the boss portion (33). A bearing (6) is provided, and an oil supply passage (9) passing through the drive shaft in the axial direction is provided in the drive shaft (5) to drain oil from the oil sump (1a) in the lower part of the casing (1). , the main bearing (7) and the bearing (6) via the oil supply passage (9).
). In addition, this oil supply is
As will be described later, the lower side of the housing (4) in the casing (1) is a high pressure chamber, and the pressure difference between the pressure in this high pressure chamber and the pressure in the housing (4) causes the oil sump (la) to of oil is supplied to the oil supply passage (9).
又、前記ハウジング（４）に、前記可動スクロール（３
）の自転を阻止するオルダムリング（１０）を設けると
共に、前記可動スクロール（３）の他側面と前記ハウジ
ング（４）との間に、前記可動スクロール（３）に作用
するスラスト荷重を受止めるスラスト軸受（１１）を設
け、このスラスト軸受（１１）に、前記給油通路（９）
の潤滑油を供給できるようにしている。Further, the movable scroll (3) is attached to the housing (4).
) is provided between the other side surface of the movable scroll (3) and the housing (4) to receive a thrust load acting on the movable scroll (3). A bearing (11) is provided, and the thrust bearing (11) is connected to the oil supply passage (9).
lubricating oil.
しかして、第１．２図に示した実施例では、前記ケーシ
ング（１）の上部に一対の第１及び第２仕切体（１２）
（１３）を上下に所定間隔を置いて設けて、これら仕切
体（１２）（１３）間に低圧室（１４）を画成し、前記
ケーシング（１）内における前記上側仕切体（１２）の
上方側を第１高圧室（１５）とし、又、前記下側仕切体
（１３）の下方側を第２高圧室（１６）とし、前記低圧
室（１４）に前記圧縮要素（Ｐ）を内装し、かつこの低
圧室（１４）に吸入管（１７）を開口させると共に、前
記固定スクロール（２）の中心部に、前記第１仕切体（
１２）の中心部を貫通して前記第１高圧室（１５）に露
出する第１突出部（２３）を設け、又、前記ハウジング
（４）の中心部に、前記第２仕切体（１３）の中心部を
貫通して前記第２高圧室（１６）に露出する第２突出部
（４１）を設けて、前記第１突出部（２３）に、上下方
向に貫通する吐出口（２４）を設けて、該吐出口（２４
）を前記第１高圧室（１５）に開口させ、前記第２高圧
室（１６）に露出する第２突出部（４１）に貫通孔（４
２）を設けて、該貫通孔に前記駆動軸（５）を挿通させ
る一方、前記第１高圧室（１５）と第２高圧室（１６）
とを連通路（１６）を介して連通させ、前記第２高圧室
（１６）に吐出管（１６）を設けたのである。In the embodiment shown in FIG. 1.2, a pair of first and second partitions (12) are provided on the upper part of the casing (1).
(13) are provided vertically at a predetermined interval to define a low pressure chamber (14) between these partitions (12) and (13), and the upper partition (12) in the casing (1) is The upper side is a first high pressure chamber (15), the lower side of the lower partition (13) is a second high pressure chamber (16), and the compression element (P) is installed in the low pressure chamber (14). The suction pipe (17) is opened in the low pressure chamber (14), and the first partition (
A first protrusion (23) penetrating the center of the housing (12) and exposed to the first high pressure chamber (15) is provided, and the second partition (13) is provided in the center of the housing (4). A second protrusion (41) is provided that penetrates through the center and is exposed to the second high pressure chamber (16), and a discharge port (24) that penetrates in the vertical direction is provided in the first protrusion (23). The discharge port (24
) is opened into the first high pressure chamber (15), and a through hole (4) is formed in the second protrusion (41) exposed to the second high pressure chamber (16).
2), and the drive shaft (5) is inserted into the through hole, while the first high pressure chamber (15) and the second high pressure chamber (16) are provided.
The second high pressure chamber (16) is provided with a discharge pipe (16).
又、前記各仕切体（１２）（１３）は、その中心部に、
嵌合孔（１２ａ）（１３ａ）をもった下向きボス部を突
設して、前記各突出部（２３）（４１）を前記各嵌合孔
（１２ａ）（１３ａ）に挿嵌し、これら嵌合部にシール
材を設けて、前記各高圧室（１５）（１Ｂ）の流体の漏
れを防いでいる。In addition, each of the partitions (12) and (13) has a center portion thereof,
A downward boss portion having fitting holes (12a) and (13a) is provided to protrude, and each of the protruding portions (23) and (41) is inserted into each of the fitting holes (12a and 13a), and these fitting holes are inserted into the respective fitting holes. A sealing material is provided at the joint to prevent fluid from leaking from each of the high pressure chambers (15) (1B).
又、前記第１及び第２突出部（２３）（４１）は、その
シール径、即ち外径をほぼ同径に形成して、第１高圧室
（１５）から固定スクロール（２）に作用する流体の受
圧面積と、第２高圧室（１６）からハウジング（４）に
作用する流体の受圧面積とがほぼ同じとなるようにして
いる。Further, the first and second protrusions (23) (41) are formed to have substantially the same seal diameter, that is, the outer diameter, so that the first high pressure chamber (15) acts on the fixed scroll (2). The pressure receiving area of the fluid and the pressure receiving area of the fluid acting on the housing (4) from the second high pressure chamber (16) are made to be approximately the same.
又、前記各渦巻体（２２）（３２）の端面には、チップ
シール溝（２５）（３４）を設けて、これらチップシー
ル溝（２５）（３４）に、前記各鏡板（２１）（３１）
の−側平面と対接するチップシール（２６）（３５）を
嵌合し、各渦巻体（２２）（３２）端面と各鏡板（２１
）（３１）の−側平面との対接部間をシールする一方、
前記可動スクロール（３）に、前記鏡板（３１）及び渦
巻体（３２）を上下方向に貫通して前記チップシール溝
（３４）におけるチップシール（３５）の背面側を、前
記給油通路（９）に連通ずる給油孔（３６）を設けて、
この給油孔（３６）から前記チップシール溝（３４）に
潤滑油を供給する如く成す一方、前記軸受（６）に、該
軸受（６）への給油後の潤滑油を、前記圧縮要素（Ｐ）
の圧縮過程における圧縮室（Ｐ、）に導入する給油孔（
３７）を設けている。Further, chip seal grooves (25) (34) are provided on the end faces of each of the spiral bodies (22) (32), and each of the end plates (21) (31) is provided in these chip seal grooves (25) (34). )
The chip seals (26) (35) that are in contact with the - side plane of the
) (31) while sealing between the opposing parts with the - side plane,
The movable scroll (3) is provided with the oil supply passageway (9) that vertically passes through the end plate (31) and the spiral body (32) and connects the rear side of the chip seal (35) in the chip seal groove (34). Provide an oil supply hole (36) that communicates with the
While lubricating oil is supplied from this oil supply hole (36) to the tip seal groove (34), the lubricating oil after being lubricated to the bearing (6) is supplied to the compression element (P )
The oil supply hole (P,) introduced into the compression chamber (P) during the compression process
37).
尚、前記チップシール溝（３４）への潤滑油の供給は、
前記ボス部（３３）の底面と前記駆動軸（５）の偏心軸
部（５１）端面との間に第１油溜室（２０）を設けて、
該油溜室（２０）から前記軸受（６）に給油すると共に
、前記ボス部（３３）内の底面から前記チップシール溝
（３４）の渦巻方向中心側部位に亘うて前記給油孔（３
６）を設け、前記油溜室（２０）の潤滑油を、前記給油
孔（３６）から前記チップシール溝（３４）に供給する
如く成す一方、前記可動スクロール（３）の前記軸受（
１１）近傍部位からチップシール溝（３４）の渦巻方向
外周側部位に亘って給油孔（３８ａ）を設けるのが好ま
しい。In addition, the supply of lubricating oil to the tip seal groove (34) is as follows:
A first oil reservoir chamber (20) is provided between the bottom surface of the boss portion (33) and the end surface of the eccentric shaft portion (51) of the drive shaft (5),
The bearing (6) is supplied with oil from the oil reservoir chamber (20), and the oil supply hole (3) extends from the bottom of the boss (33) to the center side of the tip seal groove (34) in the spiral direction.
6) is provided so that the lubricating oil in the oil reservoir chamber (20) is supplied from the oil supply hole (36) to the tip seal groove (34), while the bearing (6) of the movable scroll (3)
11) It is preferable to provide an oil supply hole (38a) extending from a nearby portion to an outer circumferential portion in the spiral direction of the tip seal groove (34).
又、前記潤滑油の圧縮室（Ｐ 、）への導入は、前記軸
受（６）の下端部内周面に、該軸受（６）を潤滑した後
の潤滑油を溜める環状の第２抽溜室（３０）を設け、該
油溜室（３０）から前記圧縮室（Ｐ、）に亘って横孔と
縦孔とから成る前記給油孔（３７）を設け、前記第２油
溜室（３０）の潤滑油を前記圧縮室（Ｐｉ）に供給する
如く成すのである。The lubricating oil is introduced into the compression chamber (P,) through an annular second extraction chamber which stores the lubricating oil after lubricating the bearing (6) on the inner peripheral surface of the lower end of the bearing (6). (30), and the oil supply hole (37) consisting of a horizontal hole and a vertical hole is provided extending from the oil reservoir chamber (30) to the compression chamber (P), and the oil supply hole (37) consisting of a horizontal hole and a vertical hole is provided; lubricating oil is supplied to the compression chamber (Pi).
尚、図中（５２）は前記偏心軸部（５１）と一体に形成
したバランスウェイトでアル。In addition, (52) in the figure is a balance weight formed integrally with the eccentric shaft part (51).
以上の如く構成した流体機械は、駆動軸（５）の駆動で
可動スクロール（３）が公転駆動すると、吸入管（１７
）から低圧室（１４）に導入された低圧流体が、圧縮室
（Ｐ１）で圧縮されて、吐出口（２４）から第１高圧室
（１５）に吐出され、該第１高圧室（１５）が高温、高
圧となり、この第１高圧室（１５）の高圧流体が、連通
路（１６）を経て第２高圧室（１６）に供給され、吐出
管（１９）から放出されるのである。In the fluid machine configured as described above, when the movable scroll (3) is driven to revolve by the drive shaft (5), the suction pipe (17
) is introduced into the low pressure chamber (14), is compressed in the compression chamber (P1), and is discharged from the discharge port (24) into the first high pressure chamber (15). becomes high temperature and high pressure, and the high pressure fluid in the first high pressure chamber (15) is supplied to the second high pressure chamber (16) via the communication path (16) and discharged from the discharge pipe (19).
しかして、吸入管（１７）は、低圧室（１４）に開口し
、又、圧縮要素（Ｐ）は、固定スクロル（２）における
吐出口（２４）部分が高圧室（１５）に露出しているだ
けであるから、前記吸入間（１７）及び低圧室（１４）
内の低温の低圧流体が、第１及び第２高圧室（１５）（
１Ｂ）からの熱によって過熱されるのを防止でき、圧縮
効率を向上できるのである。Thus, the suction pipe (17) opens to the low pressure chamber (14), and the compression element (P) has the discharge port (24) portion of the fixed scroll (2) exposed to the high pressure chamber (15). The suction chamber (17) and the low pressure chamber (14)
The low-temperature low-pressure fluid in the first and second high-pressure chambers (15) (
It is possible to prevent overheating due to heat from 1B) and improve compression efficiency.
又、前記低圧室（１４）に配置した圧縮要素（Ｐ）及び
ハウジング（４）は、第１高圧室（１５）から固定スク
ロール（２）に作用する流体の受圧面積と、第２高圧室
（１６）からハウジング（４）に作用する流体の受圧面
積とをほぼ同じとなるようにしているので、高圧流体に
より固定スクロール（２）、可動スクロール（３）及び
ハウジング（４）に作用する押圧力はほぼ同じ力となり
、この結果、前記圧縮要素ＣＰ）及びハウジング（４）
に対する強度負担を軽減でき、圧縮要素（Ｐ）における
相対回転部のシールが行い易いのである。Moreover, the compression element (P) and the housing (4) arranged in the low pressure chamber (14) have a pressure receiving area of the fluid acting on the fixed scroll (2) from the first high pressure chamber (15), and a pressure receiving area of the second high pressure chamber ( 16) and the pressure receiving area of the fluid acting on the housing (4) are made to be approximately the same, so the pressing force acting on the fixed scroll (2), movable scroll (3) and housing (4) due to the high pressure fluid is reduced. are almost the same force, and as a result, the compression element CP) and the housing (4)
The strength load on the compression element (P) can be reduced, and the relatively rotating portion of the compression element (P) can be easily sealed.
又、第２高圧室（１６）の圧力が低圧室（１４）との圧
力差により、油溜（１ａ）から給油通路（９）に供給さ
れた潤滑油は、主軸受（７）、軸受（６）及びスラスト
軸受（１１）に給油できると共に、給油孔（３ｅ）から
可動スクロール（３）のチップシール＃（３４）に供給
でき、更に、前記軸受に給油した後の潤滑油を、給油孔
（３７）から圧縮過程における圧縮室（ＰＩ ）に導入
できるのである。従って、上位の固定スクロール（２）
における鏡板（２１）と、下位の可動スクロール側チッ
プシール（３５）との上側対接部間に潤滑油を行き渡ら
せることができ、この上側対接部間のシール性を高める
ことができ、前記上側対接部間から圧縮過程の流体が漏
れるのを防止でき、圧縮効率を向上できるのであり、又
、前記軸受（６）への給油後の高温潤滑油を、前記低圧
室（１４）の低温、低圧流体と接触するのを防止でき、
この低温、低圧流体が過熱されるのを防止でき、圧縮効
率を向上できるのである。Also, due to the pressure difference between the pressure in the second high pressure chamber (16) and the low pressure chamber (14), the lubricating oil supplied from the oil reservoir (1a) to the oil supply passage (9) is distributed to the main bearing (7), the bearing ( 6) and the thrust bearing (11), and can also be supplied from the oil supply hole (3e) to the tip seal # (34) of the movable scroll (3). (37) can be introduced into the compression chamber (PI) during the compression process. Therefore, the upper fixed scroll (2)
The lubricating oil can be spread between the upper facing part of the end plate (21) and the lower movable scroll side tip seal (35), and the sealing performance between this upper facing part can be improved. It is possible to prevent the fluid during the compression process from leaking between the upper contact parts and improve the compression efficiency.Furthermore, the high temperature lubricating oil after being supplied to the bearing (6) can be transferred to the low temperature chamber (14). , can prevent contact with low pressure fluids,
This low-temperature, low-pressure fluid can be prevented from being overheated, and compression efficiency can be improved.
（発明の効果）
以上の如く本発明によれば、仕切体（１２）（１３）に
より画成された低圧室（１４）内に圧縮要素（Ｐ）があ
って、前記低圧室（１４）内に開口する吸入管（１７）
から圧縮室（Ｐ１）に低温の流体を吸入でき、更に、圧
縮要素ＣＰ）で圧縮された高圧流体を、固定スクロール
（２）に設けた第１突出部（２３）の吐出口（２４）か
ら第１高圧室（１５）に吐出できるので、前記吸入管（
１７）、固定スクロール（２）の低圧領域部及び可動ス
クロール（３）が、第１及び第２高圧室（１５）（１Ｂ
）からの熱によって過熱されるのを防止できるのである
。従って、圧縮要素（Ｐ）内での圧縮効率を向上できる
のである。(Effects of the Invention) As described above, according to the present invention, the compression element (P) is located within the low pressure chamber (14) defined by the partitions (12) and (13), and the compression element (P) is located within the low pressure chamber (14). Suction pipe (17) opening to
Low-temperature fluid can be sucked into the compression chamber (P1) from the compression element CP), and high-pressure fluid compressed by the compression element CP) can be sucked from the discharge port (24) of the first protrusion (23) provided on the fixed scroll (2). Since it can be discharged into the first high pressure chamber (15), the suction pipe (
17), the low pressure region of the fixed scroll (2) and the movable scroll (3) are connected to the first and second high pressure chambers (15) (1B
) can prevent overheating due to heat from Therefore, compression efficiency within the compression element (P) can be improved.
又、固定スクロール（２）及びハウジング（４）の各中
心部から仕切体（１２）（１３）を貫通して第１及び第
２高圧室（１５）（１（３）に露出する第１及び第２突
出部（２３）（４１）のシール径がほぼ同径になってい
るため、第１及び第２高圧室（１５）（１Ｂ）から圧縮
要素（Ｐ）及びハウジング（４）に作用する抑圧力をほ
ぼ同じにでき、これら圧縮要素（Ｐ）及びハウジング（
４）の押圧力による変形を減−少でき、それだけ、強度
負担を軽減できると共に、圧縮要素（Ｐ）における相対
回転部のシールが行い易いのである。In addition, the first and second high pressure chambers (15) (1 (3) are exposed to the first and second high pressure chambers (15) (1 (3)) through the partitions (12) (13) from the respective centers of the fixed scroll (2) and the housing (4). Since the seal diameters of the second protrusions (23) and (41) are approximately the same diameter, the first and second high pressure chambers (15) and (1B) act on the compression element (P) and the housing (4). The compression force can be made almost the same, and these compression elements (P) and housing (
The deformation caused by the pressing force (4) can be reduced, and the strength burden can be reduced accordingly, and the relative rotation part in the compression element (P) can be easily sealed.
第１図は本発明流体機械の一実施例を示す要部のみの拡
大横断平面図、第２図は全体の縦断面図、第３図は従来
例の説明図である。
（１）・・・・ケーシング
（２）・・・・固定スクロール
（２３）・・・・第１突出部
（２４）・・・・吐出口
（３）・・・・可動スクロール
（４）・・・・ハウジング
（４１）・・・・第２突出部
（５）・・・・駆動軸
（６）・・・・モータ
（１２）・・・・第１仕切体
（１３）・・・・第２仕切体
（１４）・・・・低圧室
（１５）・・・・第１高圧室
（１６）・・・・第２高圧室
（１７）・・・・吸入管
（１９）・・・・吐出管FIG. 1 is an enlarged cross-sectional plan view of only the essential parts showing an embodiment of the fluid machine of the present invention, FIG. 2 is a vertical cross-sectional view of the entire fluid machine, and FIG. 3 is an explanatory diagram of a conventional example. (1) Casing (2) Fixed scroll (23) First protrusion (24) Discharge port (3) Movable scroll (4) ... Housing (41) ... Second protrusion (5) ... Drive shaft (6) ... Motor (12) ... First partition (13) ... Second partition (14)...Low pressure chamber (15)...First high pressure chamber (16)...Second high pressure chamber (17)...Suction pipe (19)...・Discharge pipe
Claims (1)
される可動スクロール（３）とから成る圧縮要素（Ｐ）
と、前記可動スクロール（３）を駆動するモータ（６）
とを備え、前記圧縮要素（Ｐ）及びモータ（６）をケー
シング（１）に内装して成るスクロール形流体機械にお
いて、前記ケーシング（１）に一対の第１及び第２仕切
体（１２）（１３）を設けて、低圧室（１４）を画成し
て、この低圧室（１４）に前記圧縮要素（Ｐ）を内装し
、吸入管（１７）を開口させると共に、前記固定スクロ
ール（２）及びハウジング（４）の各中心部に、前記仕
切体（１２）（１３）を貫通して、第１及び第２高圧室
（１５）（１６）に露出する第１及び第２突出部（２３
）（４１）を設けて、前記第１高圧室（１５）に露出す
る第１突出部（２３）に吐出口（２４）を設けて、前記
第１高圧室（１５）に開口させ、前記第２高圧室（１６
）に露出する第２突出部（４１）に、前記モータ（６）
の駆動軸（５）を挿通させる一方、前記第１及び第２高
圧室（１５）（１６）を連通させ、第２高圧室（１６）
に吐出管（１９）を設けていることを特徴とするスクロ
ール形流体機械。 ２）第１及び第２突出部（２３）（４１）のシール径を
ほぼ同径としている請求項１記載のスクロール形流体機
械。[Claims] 1) A compression element (P) consisting of a fixed scroll (2) and a movable scroll (3) supported by a housing (4).
and a motor (6) that drives the movable scroll (3).
and a scroll type fluid machine in which the compression element (P) and the motor (6) are housed in a casing (1), wherein the casing (1) includes a pair of first and second partitions (12) ( 13) to define a low pressure chamber (14), the compression element (P) is placed inside the low pressure chamber (14), the suction pipe (17) is opened, and the fixed scroll (2) and first and second protrusions (23), which penetrate through the partitions (12, 13) and are exposed to the first and second high pressure chambers (15, 16), at the center of the housing (4).
) (41), a discharge port (24) is provided in the first protrusion (23) exposed to the first high pressure chamber (15), and the discharge port (24) is opened to the first high pressure chamber (15). 2 hyperbaric chambers (16
), the second protrusion (41) exposed to the motor (6)
The drive shaft (5) is inserted therethrough, while the first and second high pressure chambers (15) and (16) are communicated with each other, so that the second high pressure chamber (16)
A scroll type fluid machine characterized in that a discharge pipe (19) is provided at the bottom. 2) The scroll type fluid machine according to claim 1, wherein the seal diameters of the first and second projections (23) and (41) are approximately the same diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1210289A JPH0730741B2 (en) | 1989-08-15 | 1989-08-15 | Scroll type fluid machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1210289A JPH0730741B2 (en) | 1989-08-15 | 1989-08-15 | Scroll type fluid machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374590A true JPH0374590A (en) | 1991-03-29 |
| JPH0730741B2 JPH0730741B2 (en) | 1995-04-10 |
Family
ID=16586933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1210289A Expired - Fee Related JPH0730741B2 (en) | 1989-08-15 | 1989-08-15 | Scroll type fluid machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0730741B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1205665A2 (en) * | 2000-11-06 | 2002-05-15 | Mitsubishi Heavy Industries, Ltd. | Scroll compressor |
| US7052255B2 (en) * | 2002-08-28 | 2006-05-30 | Lg Electronics Inc. | Apparatus for changing capacity of scroll compressor with movable seal member |
| CN113309703A (en) * | 2020-02-26 | 2021-08-27 | Lg电子株式会社 | Compressor |
-
1989
- 1989-08-15 JP JP1210289A patent/JPH0730741B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1205665A2 (en) * | 2000-11-06 | 2002-05-15 | Mitsubishi Heavy Industries, Ltd. | Scroll compressor |
| EP1205665A3 (en) * | 2000-11-06 | 2004-01-21 | Mitsubishi Heavy Industries, Ltd. | Scroll compressor |
| US6860728B2 (en) | 2000-11-06 | 2005-03-01 | Mitsubishi Heavy Industries, Ltd. | Scroll compressor sealing |
| US7052255B2 (en) * | 2002-08-28 | 2006-05-30 | Lg Electronics Inc. | Apparatus for changing capacity of scroll compressor with movable seal member |
| CN113309703A (en) * | 2020-02-26 | 2021-08-27 | Lg电子株式会社 | Compressor |
| US11629714B2 (en) | 2020-02-26 | 2023-04-18 | Lg Electronics Inc. | Compressor having insulation plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0730741B2 (en) | 1995-04-10 |
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