JPS62186087A - Scroll type compressor - Google Patents

Scroll type compressor

Info

Publication number
JPS62186087A
JPS62186087A JP2719886A JP2719886A JPS62186087A JP S62186087 A JPS62186087 A JP S62186087A JP 2719886 A JP2719886 A JP 2719886A JP 2719886 A JP2719886 A JP 2719886A JP S62186087 A JPS62186087 A JP S62186087A
Authority
JP
Japan
Prior art keywords
suction
back pressure
chamber
scroll
pressure chamber
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
Application number
JP2719886A
Other languages
Japanese (ja)
Other versions
JPH07117055B2 (en
Inventor
Takao Yoshimura
多佳雄 吉村
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Refrigeration Co
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 Matsushita Refrigeration Co filed Critical Matsushita Refrigeration Co
Priority to JP2719886A priority Critical patent/JPH07117055B2/en
Publication of JPS62186087A publication Critical patent/JPS62186087A/en
Publication of JPH07117055B2 publication Critical patent/JPH07117055B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00Control; Monitoring or safety arrangements
    • F04C2270/70Safety, emergency conditions or requirements
    • F04C2270/72Safety, emergency conditions or requirements preventing reverse rotation

Landscapes

  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To reduce the occurring frequency of hydraulic compression and to improve compression efficiency through prevention of heating of suction gas, by a method wherein a back pressure chamber and a suction chamber formed on the back of the end plate of a turning scroll are communicated to a suction hole through a communicating passage. CONSTITUTION:A back pressure chamber 12 and a suction chamber 9a, which are formed on the back of the end plate 5a of a turning scroll 5, are communicated to a suction hole 19 through a communicating passage 20. Therefore, when a liquid coolant is sucked together with coolant gas, through a suction pipe 17, communicated to a suction hole 19, a part of the liquid coolant escapes toward the back pressure chamber 12 through the communicating passage 20, and the occurring frequency of hydraulic compression in a working chamber is reduced. Further, although a part of sucked coolant gas flows in a suction chamber 9a through a clearance A between the back pressure chamber 12 and both end plates 4a and 5a of scroll, since the remaining sucked coolant gas flows directly in the suction chamber 9a, the sucked coolant gas is prevented from reduction in its compression efficiency caused by severe heating.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は冷凍サイクル等に使用するスクロール型圧縮機
に関し、特に液圧縮の防止に係わる。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a scroll compressor used in a refrigeration cycle or the like, and particularly relates to prevention of liquid compression.

従来の技術 従来の構成を第5図、第6図にて説明する。1は密閉ケ
ーシング、2は電動機部であり、その上部にはブロック
3.固定スクロール4.旋回スクロール5.自転防止機
構6にて構成される機械部本体7が固定されている。固
定スクロール4は、鏡板4a及び鏡板4aに直立するイ
ンボリュート又はインボリュートに類似した曲線にて形
成され、一様な厚さと高さを有するラップ4bより構成
され、鏡板4aにてブロック3に固定されている。
Prior Art A conventional configuration will be explained with reference to FIGS. 5 and 6. 1 is a sealed casing, 2 is an electric motor section, and a block 3. Fixed scroll 4. Orbital scroll 5. A mechanical part main body 7 constituted by an anti-rotation mechanism 6 is fixed. The fixed scroll 4 is composed of an end plate 4a and a wrap 4b formed of an involute or a curve similar to an involute that stands upright on the end plate 4a, and has a uniform thickness and height, and is fixed to the block 3 by the end plate 4a. There is.

又、旋回スクロール6は鏡板5a及び鏡板5aに直立し
、固定スクロール4のラップ4bと同じ曲線を有するラ
ップ5bより構成され、鏡板5aは、固定スクロール4
の鏡板4aとブロック3にあるクリアランスAを介して
はさみ込み支持され、かつオルダム機構と呼称される自
転防止機構6により拘束されている。そして、固定スク
ロール4と旋回スクロール6は、各ラップ4b、sbO
巻き終り端4 b’ 、 s b’をある角度ずらした
状態で合わされている。
Moreover, the orbiting scroll 6 is composed of an end plate 5a and a wrap 5b that stands upright on the end plate 5a and has the same curve as the wrap 4b of the fixed scroll 4.
It is supported by being sandwiched between the mirror plate 4a and the block 3 through a clearance A, and is restrained by an anti-rotation mechanism 6 called an Oldham mechanism. The fixed scroll 4 and the orbiting scroll 6 each wrap 4b, sbO
The winding end ends 4 b' and s b' are aligned with each other with a certain angle shifted from each other.

8は吐出孔、9は吸入孔であり、吐出孔8は固定スクロ
ール4のインボリュートの中心部に、又吸入孔9は固定
スクロール4のインボリュートの鏡板4aの外縁部に設
けられ吸入孔9は吸入室9aと連通している。1oは旋
回スクロール5に、そのラップ6bと反対側の面に設け
られた突起部であり、ラップ6bのインボリュートの中
心と同心である。11はブロック3に支承されたシャフ
トであり、機械部本体T側の端部に設けられシャフト中
心より偏心したボス部11aに旋回スクロール5の突起
10を収納することにより電動機部2と旋回スクロール
6を連結している。また11bは給油路であり、ボス部
11aと密閉ケーシング1の下部を連通している。12
は旋回スクロール6の背面に形成された背圧室であり、
旋回スクロール5のランプ5b側とはクリアランスAを
介して連通している。また、15は圧縮空間である。
8 is a discharge hole, 9 is a suction hole, the discharge hole 8 is provided at the center of the involute of the fixed scroll 4, and the suction hole 9 is provided at the outer edge of the end plate 4a of the involute of the fixed scroll 4. It communicates with room 9a. 1o is a protrusion provided on the surface of the orbiting scroll 5 opposite to the wrap 6b, and is concentric with the center of the involute of the wrap 6b. Reference numeral 11 denotes a shaft supported by the block 3, and the protrusion 10 of the orbiting scroll 5 is accommodated in a boss portion 11a provided at the end on the side of the main body T of the machine section and eccentric from the center of the shaft. are connected. Further, reference numeral 11b denotes an oil supply passage, which communicates the boss portion 11a with the lower part of the sealed casing 1. 12
is a back pressure chamber formed on the back surface of the orbiting scroll 6;
It communicates with the lamp 5b side of the orbiting scroll 5 via a clearance A. Further, 15 is a compression space.

16は旋回スクロールの鏡板6aとブロック3間に設け
たスラスト軸受である。17は吸入管であり、吸入孔9
と連通している。18は吐出管である0 次にスクロール圧縮機の圧縮機構について説明する0 電動機部2の回転に伴うシャフト11の回転運動は、ボ
ス部11a、突起部1oを介して旋回スクロール6に伝
達されるが、自転防止機構6の作用により旋回スクロー
ル5は自転することなく固定スクロール4のインボリュ
ートの中心を旋回中心として旋回運動する。このとき、
旋回スクロール6のラップ6bの巻き終り端5b’が固
定スクロール4のラップ4bに、固定スクロール4のラ
ップ4bの巻き終り端4 b’が旋回スクロール6のラ
ップ6bに各々接触している状態が吸入完了であり、旋
回スクロール6の公転運動に伴いラップ4bとラップ6
b同士の2つの接触点がインボリュートの中心に近づく
に従い圧縮空間16の圧力が上昇する。
16 is a thrust bearing provided between the end plate 6a of the orbiting scroll and the block 3. 17 is a suction pipe, and suction hole 9
It communicates with 18 is a discharge pipe 0 Next, the compression mechanism of the scroll compressor will be explained. However, due to the action of the rotation prevention mechanism 6, the orbiting scroll 5 rotates around the involute center of the fixed scroll 4 without rotating on its own axis. At this time,
The state in which the winding end 5b' of the wrap 6b of the orbiting scroll 6 is in contact with the wrap 4b of the fixed scroll 4, and the winding end 4b' of the wrap 4b of the fixed scroll 4 is in contact with the wrap 6b of the orbiting scroll 6 is an inhalation condition. The wrap 4b and the wrap 6 are completed as the orbiting scroll 6 revolves.
The pressure in the compression space 16 increases as the two points of contact between b come closer to the center of the involute.

このスクロール圧縮機の圧縮機構により、吸入管17よ
り吸入孔9を介して吸入室9aに吸入された冷媒は圧縮
され吐出孔8を介して−H密閉ケーシング1内に吐出さ
れた後、吐出管1日を介して冷却システム(図示せず)
に吐出される。また、圧縮空間16の圧力の上昇に伴う
、固定スクロール4と旋回スクロール6間を軸方向に引
き離そうとするスラスト力は、例えばボールの様なスラ
スト軸受16にて支持される、また背圧室12は、吸入
室9aとクリアランスAを介して連通しているため、吸
入圧力に保持される。
By the compression mechanism of this scroll compressor, the refrigerant sucked into the suction chamber 9a from the suction pipe 17 through the suction hole 9 is compressed and discharged into the -H sealed casing 1 through the discharge hole 8, and then Cooling system throughout the day (not shown)
is discharged. Further, the thrust force that tends to separate the fixed scroll 4 and the orbiting scroll 6 in the axial direction due to the increase in pressure in the compression space 16 is supported by a thrust bearing 16 such as a ball, and a back pressure chamber 12 is in communication with the suction chamber 9a via the clearance A, so it is maintained at the suction pressure.

発明が解決しようとする問題点 このような従来の方法では、起動初期に冷却システムの
液冷媒が吸入孔より吸入室に流入してきた際に、吸入室
の容積が小さいために、圧縮室に流入しその結果、液圧
縮による異常圧力上昇の現象が発生し、旋回および固定
スクロールの鏡板やラップが折損したり破損することが
あった。またこれを回避するために、吸入管と背圧室及
び背圧室と吸入室を順に連通し、吸入された液冷媒やガ
ス冷媒が一旦容積の大きい背圧室に流入した後吸入室に
至る経路をとり、液圧縮を防止する方法もあるが、この
場合定常運転時も吸入されたガス冷媒が一旦背圧室に吸
入されることとなり、背圧室内にてブロック等より熱の
影響を受けるために吸入ガスの受熱損失が増加したり体
積効率が悪くなる問題があった。尚、これらの問題は逆
止弁の有無に拘らず発生した。
Problems to be Solved by the Invention In such conventional methods, when the liquid refrigerant of the cooling system flows into the suction chamber from the suction hole at the initial stage of startup, it flows into the compression chamber because the volume of the suction chamber is small. As a result, an abnormal pressure increase occurred due to liquid compression, and the end plates and wraps of the orbiting and fixed scrolls were sometimes broken or damaged. In addition, in order to avoid this, the suction pipe and the back pressure chamber and the back pressure chamber and the suction chamber are connected in sequence, so that the sucked liquid refrigerant or gas refrigerant flows into the back pressure chamber with a large volume and then reaches the suction chamber. There is also a method to prevent liquid compression by taking a route, but in this case, even during steady operation, the gas refrigerant sucked into the back pressure chamber is once sucked into the back pressure chamber, where it is affected by heat from blocks etc. Therefore, there are problems in that the heat loss of the suction gas increases and the volumetric efficiency deteriorates. Note that these problems occurred regardless of the presence or absence of a check valve.

本発明は、上記従来例の問題点を解消するもので、吸入
管より吸入された冷媒のうち一部を吸入室へ、一部を背
圧室に同時に導く様にして、体積効率が良好で又液冷媒
が吸入管より流入したときも一部を背圧室に導き液圧縮
の頻度及び時間を減少させスクロール部品の信頼性の向
上を図ることを目的とするものである。
The present invention solves the above-mentioned problems of the conventional example, and achieves good volumetric efficiency by simultaneously guiding a portion of the refrigerant sucked through the suction pipe into the suction chamber and a portion into the back pressure chamber. Furthermore, when liquid refrigerant flows in through the suction pipe, a portion of the liquid refrigerant is guided into the back pressure chamber to reduce the frequency and time of liquid compression, thereby improving the reliability of the scroll components.

問題点を解決するだめの手段 本発明は、吸入孔と背圧室及び吸入室を同時に連通ずる
連通路を備えたものである。
Means for Solving the Problems The present invention is provided with a communication path that communicates the suction hole, the back pressure chamber, and the suction chamber at the same time.

作  用 本発明は上記した構成により、吸入管より吸入された冷
媒の一部は吸入室へ、一部は背圧室に導かれるために冷
却システムから吸入された冷媒を直接吸入室に導〈従来
例に比べて、液冷媒が吸入されたときに背圧室が緩衝室
として機能し液圧縮の頻度及び時間が減少すると共に、
全ての吸入ガスを一旦背圧室に導いた後吸入室に導く他
の従来例に比べて背圧室に全ての冷媒を導くのではない
ためにブロック等からの熱の授受が少なく従って吸入ガ
スの加熱による体積効率の低下が少ない等の効果を有す
る。
Effects of the present invention With the above-described configuration, part of the refrigerant sucked from the suction pipe is guided to the suction chamber, and part of it is guided to the back pressure chamber, so that the refrigerant sucked from the cooling system is directly guided to the suction chamber. Compared to the conventional example, the back pressure chamber functions as a buffer chamber when the liquid refrigerant is sucked, reducing the frequency and time of liquid compression, and
Compared to other conventional examples in which all the suction gas is first introduced into the back pressure chamber and then into the suction chamber, all the refrigerant is not introduced into the back pressure chamber, so there is less heat transfer from the block etc., and therefore the suction gas This has effects such as less reduction in volumetric efficiency due to heating.

実施例 以下本発明の一実施例を第1図、第2図、第3図にて説
明する。尚、従来と同一部分は同一符号を付し説明を省
略する。又、図中矢印は吸入される冷媒の流れ方向を示
す。
EXAMPLE An example of the present invention will be described below with reference to FIGS. 1, 2, and 3. Incidentally, the same parts as in the prior art are given the same reference numerals, and the explanation will be omitted. Further, arrows in the figure indicate the flow direction of the refrigerant to be sucked.

19は吸入孔であり、吸入管17と連通している。又2
oは連通路であり、固定スクロールの鏡板4aを一部切
欠くことにより吸入孔19と吸入室9aを連通ずる様に
形成すると共に、連通路20を介して吸入孔19と背圧
室12を連通している。
Reference numeral 19 denotes a suction hole, which communicates with the suction pipe 17. Also 2
o is a communication passage, which is formed by cutting out a portion of the end plate 4a of the fixed scroll so that the suction hole 19 and the suction chamber 9a communicate with each other, and also connects the suction hole 19 and the back pressure chamber 12 through the communication passage 20. It's communicating.

上記構成において、吸入管17より吸入された冷媒は、
吸入孔19より連通路20に至り、一部は直接吸入室9
aに吸入されると共に一部は背圧室12に至る。背圧室
12に侵入した冷媒は、旋回と固定スクロールの鏡板5
a、4a間のクリアランスAを介して全周より吸入室9
aに至り従来と同様の圧縮行程に入る。又、起動時等に
おいて、液冷媒が流入した場合においても、一部は連通
路2oより背圧室12に至る。従って、直接吸入室9a
に吸入される冷媒量は従来より減少し液圧縮の頻度及び
液圧縮時間が従来より減少する。又、定常運転時におい
ても、吸入ガスの一部は必ず直接吸入室9aに吸入され
ることとなり、全ての吸入ガスを一旦背圧室12に吸入
させる場合より、ブロック等からの熱の授受が少なく吸
入ガスの加熱による体積効率の低下が少ない。
In the above configuration, the refrigerant sucked through the suction pipe 17 is
The suction hole 19 leads to the communication passage 20, and a part of it is directly connected to the suction chamber 9.
A part of the air is sucked into the back pressure chamber 12. The refrigerant that has entered the back pressure chamber 12 is removed by the rotating and fixed scroll mirror plates 5.
Suction chamber 9 from the entire circumference via the clearance A between a and 4a
A is reached and a compression process similar to the conventional one begins. Furthermore, even when liquid refrigerant flows in during startup or the like, a portion of the liquid refrigerant reaches the back pressure chamber 12 through the communication path 2o. Therefore, the direct suction chamber 9a
The amount of refrigerant sucked into the refrigerant is reduced compared to the conventional method, and the frequency and time of liquid compression are reduced compared to the conventional method. In addition, even during steady operation, a portion of the suction gas is always directly sucked into the suction chamber 9a, and heat transfer from the block etc. is reduced compared to when all the suction gas is once sucked into the back pressure chamber 12. There is little reduction in volumetric efficiency due to heating of the intake gas.

又、第4図に別の実施例を示す。21はばね21a、パ
ルプ21bで構成される逆止弁機構であり、吸入孔19
内に収納されている。運転時は、吸入室9aが吸入管内
圧力より低くなり、パルプ21bかばね21bを圧縮す
る方向に移動し、吸入孔19と連通路2oは連通路2o
は連通し、先の実施例と同様に冷媒が吸入される。停止
時においては、吸入室ea内が高圧となるため、パルプ
21bが吸入管17の方向に移動し吸入管17の端面と
パルプ21bによりシールされ、逆転を防止する。従っ
て従来の効果に加えて逆転防止の効果が付加される。
Further, FIG. 4 shows another embodiment. 21 is a check valve mechanism composed of a spring 21a and a pulp 21b, and the suction hole 19
It is stored inside. During operation, the suction chamber 9a becomes lower than the internal pressure of the suction pipe, moves in a direction that compresses the pulp 21b or the spring 21b, and the suction hole 19 and the communication passage 2o are connected to the communication passage 2o.
are in communication, and refrigerant is sucked in as in the previous embodiment. When stopped, the pressure inside the suction chamber ea becomes high, so the pulp 21b moves in the direction of the suction pipe 17 and is sealed by the end face of the suction pipe 17 and the pulp 21b, thereby preventing reverse rotation. Therefore, in addition to the conventional effect, the effect of preventing reversal is added.

尚、以上の説明は、吸入管を半径方向に設ける場合につ
いて述べたが、吸入管を軸方向に設ける場合においても
、連通路により吸入ガスの一部を吸入室に一部を背圧室
に同時に導くものであれば実施例の説明と同等の効果が
得られることは言うまでもない。
Although the above explanation is based on the case where the suction pipe is installed in the radial direction, even when the suction pipe is installed in the axial direction, a part of the suction gas is sent to the suction chamber and a part to the back pressure chamber through the communication passage. It goes without saying that the same effects as those described in the embodiment can be obtained if they are introduced simultaneously.

発明の効果 以上の説明から明らかな様に本発明は、鏡板に直立する
2つの互いにかみ合う旋回および固定スクロールと、固
定スクロールを固定するブロックと、旋回スクロールの
自転を防止し旋回運動を行なわせる自転防止機構と、固
定スクロールに開孔し吸入管と連通ずる吸入孔と、旋回
及び固定スクロールの外周側に形成される吸入室と、旋
回および固定スクロールの鏡板とブロックにより形成さ
れる背圧室と、吸入孔と背圧室及び吸入室を同時に連通
ずる連通路を備えたものであるから、吸入管より吸入さ
れた冷媒の一部は吸入室へ一部は背圧室に導かれるため
に、液冷媒が吸入されたときに背圧室が緩衝室として機
能し液圧縮の頻度及び時間が減少すると共に、背圧室内
に全ての冷媒を入れるのではないためにブロック等から
の熱の授受が少なく従って吸入ガスの加熱による体積効
率の低下が少ない等の効果を有する。又吸入孔に逆止弁
を収納することによp逆転防止の効果も付加される。
Effects of the Invention As is clear from the above description, the present invention comprises two mutually meshing rotating and fixed scrolls that stand upright on an end plate, a block that fixes the fixed scroll, and a rotating mechanism that prevents the rotating scroll from rotating on its own axis and allows it to rotate. a prevention mechanism, a suction hole opened in the fixed scroll and communicating with the suction pipe, a suction chamber formed on the outer circumferential side of the rotating and fixed scroll, and a back pressure chamber formed by the end plate and block of the rotating and fixed scroll. , since it is equipped with a communication passage that communicates the suction hole, the back pressure chamber, and the suction chamber at the same time, a part of the refrigerant sucked through the suction pipe is guided to the suction chamber and a part to the back pressure chamber. When the liquid refrigerant is sucked in, the back pressure chamber functions as a buffer chamber, reducing the frequency and time of liquid compression, and since not all the refrigerant is put into the back pressure chamber, heat transfer from blocks etc. is reduced. Therefore, there are effects such as less reduction in volumetric efficiency due to heating of the intake gas. Moreover, by housing a check valve in the suction hole, the effect of preventing p reverse rotation is added.

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

第1図は本発明の一実施例を示すスクロール型圧縮機の
縦断面図、第2図は第1図の吸入孔部の拡大断面図、第
3図は第2図のm−m’gにおける矢視図、第4図は他
の実施例における吸入孔部の拡大断面図、第5図は従来
のスクロール型圧縮機の縦断面図、第6図は第5図のv
+−VT’線における断面図である。 3・・・・・・ブロック、4・・・・・・固定スクロー
ル、4a・・・・・・固定スクロールの鏡板、4b・・
・・・・固定スクロールノラノプ、6・・・・・・旋回
スクロール、6a・・・・・・旋回スクロールの鏡板、
5b・・・・・・旋回スクロールのラップ、6・・・・
・・自転防止機構、9a・・・・・・吸入室、12・・
・・・・背圧室、19・・・・・・吸入孔、2o・・・
・・・連通路0 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第4
図 第5図 第6図
Fig. 1 is a vertical sectional view of a scroll compressor showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the suction hole in Fig. 1, and Fig. 3 is an m-m'g of Fig. 2. 4 is an enlarged sectional view of a suction hole in another embodiment, FIG. 5 is a vertical sectional view of a conventional scroll compressor, and FIG.
It is a sectional view taken along the +-VT' line. 3...Block, 4...Fixed scroll, 4a...Fixed scroll end plate, 4b...
・・・Fixed scroll noranopu, 6... Rotating scroll, 6a... End plate of rotating scroll,
5b... Wrap of orbiting scroll, 6...
... Rotation prevention mechanism, 9a... Suction chamber, 12...
...Back pressure chamber, 19... Suction hole, 2o...
...Communication path 0 Name of agent Patent attorney Toshio Nakao and 1 other person No. 4
Figure 5 Figure 6

Claims (2)

【特許請求の範囲】[Claims] (1)鏡板に直立するラップを有する2つの互いにかみ
合う旋回および固定スクロールと、前記固定スクロール
を固定するブロックと、前記旋回スクロールの自転を防
止し旋回運動を行なわせる自転防止機構と、前記固定ス
クロールに開孔し吸入管と連通する吸入孔と、前記旋回
及び固定スクロールのラップの外周側に形成される吸入
室と、前記旋回および固定スクロールの鏡板と前記ブロ
ックにより形成される背圧室と、前記吸入孔と前記背圧
室及び前記吸入室を同時に連通する連通路とを備えたス
クロール型圧縮機。
(1) Two mutually interlocking orbiting and fixed scrolls having wraps standing upright on an end plate, a block for fixing the fixed scroll, an anti-rotation mechanism that prevents the rotation of the orbiting scroll and allows the orbiting movement to occur, and the fixed scroll. a suction hole opened in and communicating with the suction pipe, a suction chamber formed on the outer peripheral side of the wrap of the orbiting and fixed scroll, and a back pressure chamber formed by the end plate of the orbiting and fixed scroll and the block; A scroll compressor comprising the suction hole, a communication passage that communicates the back pressure chamber and the suction chamber at the same time.
(2)吸入孔に収納された逆止弁により連通路を開閉す
る特許請求の範囲第1項記載のスクロール型圧縮機。
(2) The scroll compressor according to claim 1, wherein the communication passage is opened and closed by a check valve housed in the suction hole.
JP2719886A 1986-02-10 1986-02-10 Scroll type compressor Expired - Lifetime JPH07117055B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2719886A JPH07117055B2 (en) 1986-02-10 1986-02-10 Scroll type compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2719886A JPH07117055B2 (en) 1986-02-10 1986-02-10 Scroll type compressor

Publications (2)

Publication Number Publication Date
JPS62186087A true JPS62186087A (en) 1987-08-14
JPH07117055B2 JPH07117055B2 (en) 1995-12-18

Family

ID=12214390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2719886A Expired - Lifetime JPH07117055B2 (en) 1986-02-10 1986-02-10 Scroll type compressor

Country Status (1)

Country Link
JP (1) JPH07117055B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013036335A (en) * 2011-08-03 2013-02-21 Mitsubishi Electric Corp Scroll compressor
WO2021025033A1 (en) * 2019-08-05 2021-02-11 ダイキン工業株式会社 Scroll compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013036335A (en) * 2011-08-03 2013-02-21 Mitsubishi Electric Corp Scroll compressor
WO2021025033A1 (en) * 2019-08-05 2021-02-11 ダイキン工業株式会社 Scroll compressor
JP2021025459A (en) * 2019-08-05 2021-02-22 ダイキン工業株式会社 Scroll compressor
CN114222861A (en) * 2019-08-05 2022-03-22 大金工业株式会社 Scroll compressor having a plurality of scroll members
CN114222861B (en) * 2019-08-05 2023-08-22 大金工业株式会社 Scroll compressor having a rotor with a rotor shaft having a rotor shaft with a

Also Published As

Publication number Publication date
JPH07117055B2 (en) 1995-12-18

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