JPH0730741B2 - Scroll type fluid machine - Google Patents

Scroll type fluid machine

Info

Publication number
JPH0730741B2
JPH0730741B2 JP1210289A JP21028989A JPH0730741B2 JP H0730741 B2 JPH0730741 B2 JP H0730741B2 JP 1210289 A JP1210289 A JP 1210289A JP 21028989 A JP21028989 A JP 21028989A JP H0730741 B2 JPH0730741 B2 JP H0730741B2
Authority
JP
Japan
Prior art keywords
pressure chamber
scroll
high pressure
partition
compression element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP1210289A
Other languages
Japanese (ja)
Other versions
JPH0374590A (en
Inventor
祥孝 芝本
順英 樋口
左千夫 高野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP1210289A priority Critical patent/JPH0730741B2/en
Publication of JPH0374590A publication Critical patent/JPH0374590A/en
Publication of JPH0730741B2 publication Critical patent/JPH0730741B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Rotary Pumps (AREA)

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。
The present invention relates to a scroll type fluid machine mainly used for refrigeration equipment.

(従来の技術) 一般に、此種流体機械は、特開昭61−98987号公報に記
載されている。この従来の流体機械は第3図に示してい
る通り、密閉ケーシング(K)内の上部に、第1スクロ
ール(A)とハウジング(B)に支持される第2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
前記第2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)の上壁に吸入管
(G)を開口させ、又、第1スクロール(A)の上部
に、前記吸入管(G)と連通する吸入口(a1)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) Generally, this type of fluid machine is described in JP-A-61-98987. As shown in FIG. 3, this conventional fluid machine is a compression casing composed of a first scroll (A) and a second scroll (C) supported by a housing (B) in an upper part of a closed casing (K). An element (D) is arranged, and a motor (F) for driving the second scroll (C) via a drive shaft (E) is arranged in the lower portion of the casing (K), while the casing (K) is arranged. The suction pipe (G) is opened in the upper wall of K), and the suction port (a 1 ) and the discharge port (a 2 ) communicating with the suction pipe (G) are formed in the upper part of the first scroll (A). Is provided, the upper side in the casing (K) serves as the first high-pressure chamber (H), and the communication passage (I) is provided at one side portion of each scroll so that the compression element ( The lower side of D) is the second high pressure chamber (J), and the discharge pipe (L) is in this second high pressure chamber (J). Only to have.

(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(G)と、圧縮要
素における第1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。
(Problems to be Solved by the Invention) However, in this conventional fluid machine, the suction pipe (G) and the first scroll (A) in the compression element have high temperatures.
Since it is arranged in the high pressure chamber (H), the low-temperature suction fluid introduced into the compression element (D) is overheated by the heat from the high pressure chamber (H), and the compression efficiency in the compression element is increased. There was a problem that it dropped significantly.

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
ょうとする点にある。
The present invention is invented in view of the above problems, the purpose is
This is to prevent the low temperature intake fluid introduced into the compression element from being overheated by the heat from the high pressure chamber, and to improve the compression efficiency.

(課題を解決するための手段) しかして、本発明は、第1スクロール(2)と、ハウジ
ング(4)に支持される第2スクロール(3)とから成
る圧縮要素(P)と、前記第1スクロール(2)及び第
2スクロール(3)のうちのいずれか一方又は両方を駆
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)に内装してなるスクロ
ール形流体機械において、前記ケーシング(1)に第1
及び第2仕切体(12)(13)を設けて、低圧室(14)、
第1高圧室(15)及び第2高圧室(16)を画成して、前
記低圧室(14)に前記圧縮要素(P)を内装し吸入管
(17)を開口させるとともに、前記第1仕切体(12)の
中心部に吐出口(12a)を設けて前記第1高圧室(15)
に開口させ、前記第2仕切体(13)の中心部に開口(13
a)を設けて第2高圧室(16)から低圧室(14)に向け
て前記モータ(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) In the present invention, the compression element (P) including the first scroll (2) and the second scroll (3) supported by the housing (4), and A motor (6) for driving either one or both of the first scroll (2) and the second scroll (3), and the compression element (P) and the motor (6) are installed in the casing (1). In a scroll type fluid machine comprising the
And the second partition (12) (13), and the low-pressure chamber (14),
The first high pressure chamber (15) and the second high pressure chamber (16) are defined, the compression element (P) is installed in the low pressure chamber (14) to open the suction pipe (17), and the first high pressure chamber (16) is opened. A discharge port (12a) is provided at the center of the partition body (12) to provide the first high pressure chamber (15).
At the center of the second partition (13) (13
a) is provided to insert the drive shaft (5) of the motor (6) from the second high pressure chamber (16) toward the low pressure chamber (14),
The first and second high pressure chambers (15) (16) are communicated with each other, and the second
The high pressure chamber (16) is provided with a discharge pipe (19).

また、前記第1スクロール(2)の中心部に第1仕切体
(12)の吐出口(12a)に嵌合し第1高圧室(15)に露
出する第1突出部(23)を設けるとともに、ハウジング
(4)の中心部に第2仕切体(13)の開口(13a)に嵌
合し第2高圧室(16)に露出する第2突出部(41)を設
けて、この第1及び第2突出部(23)(41)のシール径
をほぼ同径とするのが好ましい。
A first protrusion (23) fitted to the discharge port (12a) of the first partition (12) and exposed to the first high pressure chamber (15) is provided at the center of the first scroll (2). A second protrusion (41) fitted to the opening (13a) of the second partition (13) and exposed to the second high-pressure chamber (16) is provided at the center of the housing (4). It is preferable that the seal diameters of the second protrusions (23) (41) are substantially the same.

(作用) 圧縮要素(P)は、第1及び第2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、吐出口(12a)から第1高圧室(1
5)に吐出できるのであって、前記吸入管(17)、第1
スクロール(2)の低圧領域部及び第2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。
(Operation) The compression element (P) is in the low pressure chamber (14) defined by the first and second partition bodies (12) and (13), and the suction pipe opens into the low pressure chamber (14). A low-temperature fluid can be sucked into the compression element (P) from (17), and the high-pressure fluid compressed in the compression element (P) is discharged from the discharge port (12a) into the first high-pressure chamber (1).
5) can be discharged to the suction pipe (17), the first
The low pressure region of the scroll (2) and the second scroll (3) can be prevented from being overheated by the heat from the first and second high pressure chambers (15) (16).

又、第1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)(16)に露出する第1及び第2突出部(23)
(41)を設け、これら各突出部(23)(41)のシール径
をほぼ同径にすることにより、第1及び第2高圧室(1
5)(16)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。
The first and second high pressure chambers (15) and (16) are exposed from the central portions of the first scroll (2) and the housing (4) through the partition bodies (12) and (13). 2 protrusions (23)
(41) is provided, and the seal diameters of these protrusions (23) and (41) are made approximately the same, so that the first and second high pressure chambers (1
5) The pressing force acting on the compression element (P) and the housing (4) from (16) can be made almost the same, and the compression element (P)
Also, the load on the strength of the housing (4) can be reduced.

(実施例) 図示した流体機械は、鏡板(21)の一側平面に渦巻体
(22)を下向きに突設し、この渦巻体(22)の中心側に
突出ポート(24)を設けた第1スクロール(2)と、ハ
ウジング(4)に支持され、鏡板(31)の一側平面に渦
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第2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ともに、前記ケーシン
グ(1)内の下部に、駆動軸(5)を介して前記第2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、前記下位の第2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
ける偏心軸部に、スイングリンク(50)のブッシュ部
(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)の駆動により前記第2スクロール(3)
を公転駆動させる如く成すとともに、前記プッシュ部
(51)と前記ボス部(33)との間にスクロール軸受
(8)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)及びスクロール軸受
(8)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(1a)の油を前記給油通路(9)に供給
する如くなしている。
(Example) In the illustrated fluid machine, a spiral body (22) is provided so as to project downward on one side plane of an end plate (21), and a projecting port (24) is provided on the center side of the spiral body (22). The scroll (2) and the housing (4) are supported, and the spiral body (32) is projected upward on one side plane of the end plate (31), and the spiral body (32) is referred to as the spiral body (22). A compression element (P) consisting of a second scroll (3) engaged in a vertically meshing manner is arranged in the upper part of the closed casing (1), and is driven in the lower part of the casing (1). A motor (6) for driving the second scroll (3) via a shaft (5) is arranged, and an upper part of the drive shaft (5) is located below a lower part of the housing (4) via a main bearing (7). And a cylindrical boss (33) is provided on the other side surface of the lower second scroll (3). And the eccentric shaft portion provided on the upper end of the drive shaft (5), in conjunction with the upper end of the drive shaft through bushing portion of the swing link (50) to (51) (5),
The second scroll (3) is driven by the drive shaft (5).
And a scroll bearing (8) between the push portion (51) and the boss portion (33), while the drive shaft (5) penetrates the drive shaft in the axial direction. Is provided with an oil supply passage (9) for supplying oil from the oil sump (1a) in the lower portion of the casing (1) to the main bearing (7) and the scroll bearing (8) via the oil supply passage (9). I am able to do it. As will be described later, the oil is supplied to the casing (1) below the housing (4) by using a high pressure chamber, and the pressure of the high pressure chamber and the pressure inside the housing (4). The oil in the oil reservoir (1a) is supplied to the oil supply passage (9) due to the difference.

又、前記ハウジング(4)に、前記第2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、前記第2スクロール(3)の他側面と前記ハウ
ジング(4)との間に、前記第2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 housing (4) is provided with an Oldham ring (10) for preventing rotation of the second scroll (3), and between the other side surface of the second scroll (3) and the housing (4). A thrust bearing (11) for receiving the thrust load acting on the second scroll (3) is provided, and the lubricating oil in the oil supply passage (9) can be supplied to the thrust bearing (11).

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、前記ケーシング(1)内に
おける前記第1仕切体(12)の上方側に第1高圧室(1
5)を、前記第2仕切体(13)の下方側に第2高圧室(1
6)をそれぞれ画成し、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(1
7)を開口させている。
Therefore, in the embodiment shown in FIGS. 1 and 2, the first and second partition bodies (12) and (13) are provided on the upper portion of the casing (1) with a predetermined space between the partition bodies. (12)
A low pressure chamber (14) is provided between (13) and a first high pressure chamber (1) above the first partition (12) in the casing (1).
5) on the lower side of the second partition body (13) to the second high pressure chamber (1
6), the compression element (P) is installed in the low pressure chamber (14), and the suction pipe (1) is installed in the low pressure chamber (14).
7) is opened.

また、前記第1仕切体(12)の中心部に、吐出口(12
a)をもった下向きボス部を突設して前記吐出口(12a)
を前記第1高圧室(15)に開口させるとともに、前記第
2仕切体(13)の中心部に、開口(13a)をもった下向
きボス部を突設して、この開口(13a)に、前記第2高
圧室(16)から前記低圧室(14)に向けて前記モータ
(6)の駆動軸(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(18)を介して
連通させ、前記第2高圧室(16)に吐出管(19)を設け
ている。
In addition, at the center of the first partition (12), the discharge port (12
The above-mentioned discharge port (12a)
Is opened in the first high pressure chamber (15), and a downward boss portion having an opening (13a) is provided at the center of the second partition body (13) so as to project into the opening (13a). The drive shaft (5) of the motor (6) is inserted from the second high pressure chamber (16) toward the low pressure chamber (14) while the first high pressure chamber (15) and the second high pressure chamber (16) are inserted. Are communicated with each other via a communication passageway (18), and a discharge pipe (19) is provided in the second high pressure chamber (16).

また、前記第1スクロール(2)の背面中心部に、前記
吐出ポート(24)に連通する内腔部をもった筒状の第1
突出部(23)を設けて、この第1突出部(23)を前記第
1仕切体(12)の吐出口(12a)に、突出先端が前記第
1高圧室(15)に露出するように嵌合し、前記突出部
(23)の外周にシール材(27)を設けて、前記第1高圧
室(15)の流体の漏れを防いでおり、また、前記ハウジ
ング(4)の中心部に、前記第2仕切体(13)の開口
(13a)に嵌合し前記第2高圧室(16)に露出する第2
突出部(41)を設け、この第2突出部(41)に貫通孔
(42)を設けて、該貫通孔(42)に前記駆動軸(5)を
挿通するとともに、前記第2突出部(41)の外周にシー
ル材(43)を設けて、前記第2高圧室(16)の流体の漏
れを防いでいる。
In addition, in the central portion of the back surface of the first scroll (2), there is a cylindrical first portion having an inner cavity communicating with the discharge port (24).
A protrusion (23) is provided so that the first protrusion (23) is exposed to the discharge port (12a) of the first partition (12) and the protrusion tip is exposed to the first high pressure chamber (15). It is fitted and a sealing material (27) is provided on the outer circumference of the protrusion (23) to prevent fluid leakage in the first high pressure chamber (15), and at the center of the housing (4). , A second fitting into the opening (13a) of the second partition (13) and exposed to the second high pressure chamber (16)
A protrusion (41) is provided, a through hole (42) is provided in the second protrusion (41), the drive shaft (5) is inserted into the through hole (42), and the second protrusion (41) is inserted. A seal material (43) is provided on the outer circumference of 41) to prevent fluid leakage from the second high pressure chamber (16).

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(1
5)から第1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 so that their seal diameters, that is, outer diameters, are substantially the same, and the first high pressure chamber (1
The pressure receiving area of the fluid acting on the first scroll (2) from 5) and the pressure receiving area of the fluid acting on the housing (4) from the second high pressure chamber (16) are made substantially 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(2
5)(34)に、前記各鏡板(21)(31)の一側平面と対
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)の一側平面との
対接部間をシールする一方、前記第2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)に連通する給油
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、前記ス
クロール軸受(8)に、該スクロール軸受(8)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(P1)に導入する給油孔(37)を設けている。
Further, tip seal grooves (25) (34) are provided on the end faces of the spiral bodies (22) (32), and these tip seal grooves (2
5) (34) is fitted with the tip seals (26) (35) that are in contact with the one side planes of the respective end plates (21) (31), and the end faces of the respective spiral bodies (22) (32) and the end plates (34). 21) (31) seals the contact portion with the one side plane, while the second scroll (3)
In addition, an oil supply hole (a) which penetrates the end plate (31) and the spiral body (32) in the vertical direction and communicates the back side of the tip seal (35) in the tip seal groove (34) with the oil passage (9). 36) is provided so that lubricating oil is supplied from the oil supply hole (36) to the tip seal groove (34), while the scroll bearing (8) is lubricated after the oil is supplied to the scroll bearing (8). An oil supply hole (37) for introducing oil into the compression chamber (P 1 ) in the compression process of the compression element (P) is provided.

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)の偏心軸部及
び前記スイングリンク(50)のブッシュ部(51)の各端
面との間に第1油溜室(20)を設けて、該油溜室(20)
から前記スクロール軸受(8)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って前記給油孔(36)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
第2スクロール(3)の前記スラスト軸受(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(36a)を設けるのが好ましい。
The supply of lubricating oil to the tip seal groove (34) is performed by the bottom surface of the boss portion (33), the eccentric shaft portion of the drive shaft (5) and the bush portion (51) of the swing link (50). A first oil sump (20) is provided between each end face and the oil sump (20)
Oil is supplied to the scroll bearing (8) from the bottom, and the oil supply hole (36) is provided from the bottom surface in the boss portion (33) to the center side portion of the tip seal groove (34) in the spiral direction,
The lubricating oil in the oil sump chamber (20) is supplied from the oil supply hole (36) to the tip seal groove (34), while the lubricating oil is supplied from the vicinity of the thrust bearing (11) of the second scroll (3). It is preferable to provide the oil supply hole (36a) over the outer peripheral side portion of the tip seal groove (34) in the spiral direction.

又、前記潤滑油の圧縮室(P1)への導入は、前記スクロ
ール軸受(8)の下端部内周面に、該スクロール軸受
(8)を潤滑した後の潤滑油を溜める環状の第2油溜室
(30)を設け、該油溜室(30)から前記圧縮室(P1)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(P1)に供
給する如く成すのである。
In addition, the introduction of the lubricating oil into the compression chamber (P 1 ) is performed by an annular second oil for accumulating the lubricating oil after lubricating the scroll bearing (8) on the inner peripheral surface of the lower end portion of the scroll bearing (8). A reservoir chamber (30) is provided, and the oil supply hole (37) including a horizontal hole and a vertical hole is provided from the oil reservoir chamber (30) to the compression chamber (P 1 ).
The lubricating oil in the second oil sump chamber (30) is supplied to the compression chamber (P 1 ).

以上の如く構成した流体機械は、駆動軸(5)の駆動で
第2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(12a)から第1高圧室(1
5)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(18)
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 drive shaft (5) is driven to revolve the second scroll (3), the suction pipe (17)
The low-pressure fluid introduced from the low-pressure chamber (14) into the low-pressure chamber (14) is compressed in the compression chamber (P 1 ) and discharged from the discharge port (12a) into the first high-pressure chamber (1).
5), 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 transferred to the communication passageway (18).
It is then supplied to the second high pressure chamber (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、第1スクロル(2)における吐
出ポート(24)部分が高圧室(15)に露出しているだけ
であるから、前記吸入管(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)(16)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。
Then, the suction pipe (17) opens into the low pressure chamber (14),
Further, the compression element (P) is such that the discharge port (24) portion of the first scroll (2) is only exposed to the high pressure chamber (15), so the suction pipe (17) and the low pressure chamber (14). It is possible to prevent the low-temperature low-pressure fluid inside from being overheated by the heat from the first and second high-pressure chambers (15) (16), and improve the 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)から第1スクロー
ル(2)に作用する流体の受圧面積と、第2高圧室(1
6)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
第1スクロール(2)、第2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(P)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。
The compression element (P) and the housing (4) arranged in the low pressure chamber (14) have a pressure receiving area of the fluid acting from the first high pressure chamber (15) to the first scroll (2) and a second high pressure chamber. (1
Since the pressure receiving area of the fluid acting from 6) to the housing (4) is made substantially the same, the high pressure fluid acts on the first scroll (2), the second scroll (3) and the housing (4). The pressing force has almost the same force, and as a result, the strength load on the compression element (P) and the housing (4) can be reduced, and the relative 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)、スクロール軸受(8)及びスラ
スト軸受(11)に給油できると共に、給油孔(36)から
第2スクロール(3)のチップシール溝(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(P1)に導入できる
のである。従って、上位の第1スクロール(2)におけ
る鏡板(21)と、下位の第2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、前記ス
クロール軸受(8)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。
Further, the lubricating oil supplied from the oil sump (1a) to the oil supply passageway (9) due to the pressure difference between the second high pressure chamber (16) and the low pressure chamber (14) causes the main bearing (7) and the scroll bearing (8) and the thrust bearing (11) can be supplied with oil, and at the same time, the oil can be supplied from the oil supply hole (36) to the tip seal groove (34) of the second scroll (3). It can be introduced from the oil supply hole (37) into the compression chamber (P 1 ) during the compression process. Therefore, the lubricating oil can be spread to the upper contact portion between the end plate (21) of the upper first scroll (2) and the lower second scroll side tip seal (35), and this upper contact portion. It is possible to improve the sealing property between them, prevent the fluid in the compression process from leaking from between the upper facing portions, and improve the compression efficiency. Moreover, the high temperature after refueling the scroll bearing (8) is achieved. It is possible to prevent the lubricating oil from coming into contact with the low temperature and low pressure fluid in the low pressure chamber (14),
The low temperature and low pressure fluid can be prevented from being overheated, and the compression efficiency can be improved.

尚、本発明のスクロール形流体機械は、上記実施例のよ
うな公転式スクロール形流体機械に限らず、両系回転式
スクロール形流体機械にも適用可能である。
The scroll type fluid machine of the present invention is not limited to the revolution type scroll type fluid machine as in the above embodiment, but can be applied to both systems rotary type scroll type fluid machine.

(発明の効果) 以上の如く本発明によれば、第1及び第2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(P)で圧縮された高圧流体を、吐出口
(12a)から第1高圧室(15)に吐出できるので、前記
吸入管(17)、第1スクロール(2)の低圧領域部及び
第2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。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。
As described above, according to the present invention, the first and second partition bodies (12)
There is a compression element (P) in the low pressure chamber (14) defined by (13), and a low-temperature fluid flows from the suction pipe (17) opening into the low pressure chamber (14) to the compression chamber (P 1 ). The high pressure fluid compressed by the compression element (P) can be discharged from the discharge port (12a) to the first high pressure chamber (15). Therefore, the suction pipe (17) and the first scroll (2) Of the low pressure region and the second scroll (3) are the first and second high pressure chambers (15).
It is possible to prevent it from being overheated by the heat from (16). Therefore, the compression efficiency in the compression element (P) can be improved.

又、第1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)(16)に露出する第1及び第2突出部(23)
(41)を設け、これら突出部(23)(41)のシール径を
ほぼ同径にすることにより、第1及び第2高圧室(15)
(16)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、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。
The first and second high pressure chambers (15) and (16) are exposed from the central portions of the first scroll (2) and the housing (4) through the partition bodies (12) and (13). 2 protrusions (23)
By providing (41) and making the seal diameters of these protrusions (23) and (41) approximately the same, the first and second high pressure chambers (15)
The pressing force acting on the compression element (P) and the housing (4) from the (16) can be made almost the same, and the deformation of the compression element (P) and the housing (4) due to the pressing force can be reduced, and the load on the strength can be reduced accordingly. It can be reduced and the compression element (P)
It is easy to seal the relative rotating part in.

【図面の簡単な説明】[Brief description of drawings]

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)……第1スクロール (23)……第1突出部 (24)……吐出口 (3)……第2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 (12a)……吐出口 (13)……第2仕切体 (13a)……開口 (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 showing only an essential part of an embodiment of a fluid machine of the present invention, FIG. 2 is an overall vertical cross-sectional view, and FIG. 3 is an explanatory view of a conventional example. (1) …… Casing (2) …… First scroll (23) …… First protrusion (24) …… Discharge port (3) …… Second scroll (4) …… Housing (41) …… First 2 Projection (5) …… Drive shaft (6) …… Motor (12) …… First partition (12a) …… Discharge port (13) …… Second partition (13a) …… Opening (14) ...... Low pressure chamber (15) ...... First high pressure chamber (16) …… Second high pressure chamber (17) …… Suction pipe (19) …… Discharge pipe

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】第1スクロール(2)と、ハウジング
(4)に支持される第2スクロール(3)とから成る圧
縮要素(P)と、前記第1スクロール(2)及び第2ス
クロール(3)のうちのいずれか一方又は両方を駆動す
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)に内装してなるスクロール
形流体機械において、前記ケーシング(1)に第1及び
第2仕切体(12)(13)を設けて、低圧室(14)、第1
高圧室(15)及び第2高圧室(16)を画成して、前記低
圧室(14)に前記圧縮要素(P)を内装し吸入管(17)
を開口させるとともに、前記第1仕切体(12)の中心部
に吐出口(12a)を設けて前記第1高圧室(15)に開口
させ、前記第2仕切体(13)の中心部に開口(13a)を
設けて第2高圧室(16)から低圧室(14)に向けて前記
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。
1. A compression element (P) comprising a first scroll (2) and a second scroll (3) supported by a housing (4), the first scroll (2) and the second scroll (3). A motor (6) for driving either one or both of the above (1), and the casing (1) in which the compression element (P) and the motor (6) are housed. The first and second partition bodies (12) and (13) are provided in 1), and the low pressure chamber (14) and the first
A high pressure chamber (15) and a second high pressure chamber (16) are defined, and the low pressure chamber (14) is internally provided with the compression element (P), and a suction pipe (17) is provided.
And a discharge port (12a) is provided in the central portion of the first partition body (12) to open to the first high pressure chamber (15), and to the central portion of the second partition body (13). (13a) is provided to allow the drive shaft (5) of the motor (6) to pass from the second high pressure chamber (16) toward the low pressure chamber (14), while the first and second high pressure chambers (15) ( A scroll type fluid machine characterized in that a discharge pipe (19) is provided in the second high-pressure chamber (16) so as to communicate with each other.
【請求項2】第1スクロール(2)の中心部に第1仕切
体(12)の吐出口(12a)に嵌合し第1高圧室(15)に
露出する第1突出部(23)を設けるとともに、ハウジン
グ(4)の中心部に第2仕切体(13)の開口(13a)に
嵌合し第2高圧室(16)に露出する第2突出部(41)を
設けて、この第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。
2. A first protrusion (23) fitted to the discharge port (12a) of the first partition (12) and exposed to the first high pressure chamber (15) at the center of the first scroll (2). A second protrusion (41) fitted to the opening (13a) of the second partition (13) and exposed to the second high pressure chamber (16) is provided at the center of the housing (4). The scroll fluid machine according to claim 1, wherein the seal diameters of the first and second protrusions (23) (41) are substantially the same.
JP1210289A 1989-08-15 1989-08-15 Scroll type fluid machine Expired - Fee Related JPH0730741B2 (en)

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 JPH0374590A (en) 1991-03-29
JPH0730741B2 true 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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100439651B1 (en) 2000-11-06 2004-07-12 미츠비시 쥬고교 가부시키가이샤 Scroll compressor
KR100469461B1 (en) * 2002-08-28 2005-02-02 엘지전자 주식회사 Capacity changeable apparatus for scrool compressor
KR102341871B1 (en) 2020-02-26 2021-12-21 엘지전자 주식회사 A compressor

Also Published As

Publication number Publication date
JPH0374590A (en) 1991-03-29

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