JPH0642488A - Compressor - Google Patents

Compressor

Info

Publication number
JPH0642488A
JPH0642488A JP3220171A JP22017191A JPH0642488A JP H0642488 A JPH0642488 A JP H0642488A JP 3220171 A JP3220171 A JP 3220171A JP 22017191 A JP22017191 A JP 22017191A JP H0642488 A JPH0642488 A JP H0642488A
Authority
JP
Japan
Prior art keywords
side space
outlet pipe
pipe arrangement
arrangement side
low pressure
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.)
Withdrawn
Application number
JP3220171A
Other languages
Japanese (ja)
Inventor
Noboru Murata
昇 村田
Yoshihiro Ogawa
善裕 小川
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 JP3220171A priority Critical patent/JPH0642488A/en
Publication of JPH0642488A publication Critical patent/JPH0642488A/en
Withdrawn legal-status Critical Current

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Landscapes

  • Applications Or Details Of Rotary Compressors (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

PURPOSE:To prevent the seizure of each sliding part by feeding a sufficient quantity of gas coolant into a compressor by detecting the vacuum state of a low pressure gas passage which leads from an outlet pipe arrangement side space in an accumulator to the inside of a cylinder chamber when a filter clogs because of a large quantity of liquid coolant and supplying coolant into an outlet pipe arrangement side space. CONSTITUTION:A low pressure sensor 7 for detecting the pressure of the low pressure gas which flows in a low pressure gas passage is installed in the low pressure gas passage which leads from an outlet pipe arrangement side space 56 divided by a filter 54 to the low pressure chamber of a compression element 4, and the filter 54 is installed so as to make a detour around between the outlet pipe arrangement side space 56 in an accumulator 5 and an inlet pipe arrangement side space 55, and a bypass passage 8 for the communication between the inlet pipe arrangement side space 55 and the outlet pipe arrangement side space 56 is formed, and when the outlet pipe arrangement side space 56 is set into a vacuum state, the bypass passage 8 is opened, and coolant is supplied into the outlet pipe arrangement side space 56, and a vacuum state is eliminated.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、密閉ケーシング内にモ
ータと圧縮要素とを備えると共に、前記密閉ケーシング
の側方にアキュムレータを備えた圧縮機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor having a motor and a compression element in a hermetic casing and an accumulator on the side of the hermetic casing.

【0002】[0002]

【従来の技術】従来この種の圧縮機は、例えば実開平2
−13182号公報に記載され、かつ、図2に示すごと
く、密閉ケーシングC内にモータMと圧縮要素CFとを
備える圧縮機本体Aの側方に、アキュムレータBを配設
して、このアキュムレータBに接続している出口管Eを
前記圧縮機本体Aの前記圧縮要素CFに接続しており、
また、前記アキュムレータBは、筒状のアキュムレータ
本体B1の上方に入口管Dを、また、下方に出口管Eを
接続すると共に、前記アキュムレータ本体B1の前記入
口管Dの開口部D1と出口管Eの開口部E1との間に、
半球面形状に上方に向かって膨出形成したフィルタFを
横断状に取付けて、前記入口管Dから流入されるガス冷
媒と共に流入してくる塵埃などの異物を前記フィルタF
により除去して、前記出口管Eからガス冷媒のみを圧縮
機側に供給するようにすると共に、前記アキュムレータ
本体B1に液冷媒がガス冷媒と共に流入されたときに
は、この液冷媒を前記フィルタFと接触させることによ
りガス化させて、前記圧縮機内に液冷媒が吸入されるの
を防止するようにしていた。
2. Description of the Related Art A conventional compressor of this type is, for example, an actual flatbed 2
No. 13182, and as shown in FIG. 2, an accumulator B is disposed on the side of a compressor body A including a motor M and a compression element CF in a closed casing C. An outlet pipe E connected to the compression element CF of the compressor body A,
The accumulator B has an inlet pipe D connected to the upper side of a tubular accumulator body B1 and an outlet pipe E connected to the lower side thereof, and the opening D1 and the outlet pipe E of the inlet pipe D of the accumulator body B1. Between the opening E1 of
A filter F, which is formed in a hemispherical shape and bulges upward, is attached in a transverse manner so that foreign matter such as dust that flows in together with the gas refrigerant flowing in from the inlet pipe D can be removed from the filter F.
And the gas refrigerant alone is supplied from the outlet pipe E to the compressor side, and when the liquid refrigerant flows into the accumulator body B1 together with the gas refrigerant, the liquid refrigerant contacts the filter F. By doing so, it is gasified to prevent the liquid refrigerant from being sucked into the compressor.

【0003】[0003]

【発明が解決しようとする課題】ところが、前記したア
キュムレータでは、暖房運転中のデフロスト運転前後、
或は、圧縮機の寝込み起動時などの過度運転時におい
て、蒸発器から多量の液冷媒が急激に前記アキュムレー
タ本体B1内に戻り、この液冷媒により前記フィルタF
が目詰まりの状態となることがある。このため、圧縮機
の実吸入圧力が急激に低下して、前記フィルタFの冷媒
流通方向前後における一次側空間と二次側空間とに大き
な圧力差が生じ、該二次側空間が真空に近い状態とな
り、前記圧縮機が真空運転となるのである。従って、前
記圧縮機へガス冷媒が充分に供給されずにガス欠運転と
なって冷凍能力が低下するし、圧縮機内のシリンダをガ
ス冷媒で冷却する効果も低下して、該シリンダの内部温
度が急激に上昇し、圧縮要素内の摺動部に焼き付けが生
じる問題があった。
However, in the accumulator described above, before and after the defrost operation during the heating operation,
Alternatively, during transient operation such as when the compressor starts to sleep, a large amount of liquid refrigerant rapidly returns from the evaporator into the accumulator body B1 and the liquid refrigerant causes the filter F
May be clogged. Therefore, the actual suction pressure of the compressor sharply decreases, and a large pressure difference occurs between the primary side space and the secondary side space before and after the refrigerant F in the refrigerant flow direction, and the secondary side space is close to a vacuum. Then, the compressor is in a vacuum operation. Therefore, the gas refrigerant is not sufficiently supplied to the compressor, the gas is out of operation, the refrigerating capacity is reduced, the effect of cooling the cylinder in the compressor with the gas refrigerant is reduced, and the internal temperature of the cylinder is reduced. There is a problem that the temperature rises sharply and seizure occurs in the sliding part in the compression element.

【0004】本発明は、以上の問題に鑑みて考案したも
ので、その目的は、前記フィルタが多量の液冷媒により
目詰まりを起こして、アキュムレータ内の二次側空間か
らシリンダ室内に至る低圧ガス経路が真空状態になった
とき、この真空状態を直ぐに検出して、前記アキュムレ
ータ内の二次側空間に冷媒を供給して真空状態を無く
し、前記圧縮機内の摺動部の焼き付けを防止することが
できる圧縮機を提供することにある。
The present invention has been devised in view of the above problems, and an object thereof is to cause low pressure gas from the secondary side space in the accumulator to the cylinder chamber when the filter is clogged with a large amount of liquid refrigerant. When the path becomes a vacuum state, this vacuum state is immediately detected to supply the refrigerant to the secondary side space in the accumulator to eliminate the vacuum state and prevent the sliding part in the compressor from being seized. It is to provide a compressor capable of

【0005】[0005]

【課題を解決するための手段】本発明は、上記目的を達
成するために、密閉ケーシング11内にモータ2と圧縮
要素4とを備えた圧縮機本体1と、入口管52及び出口
管53をもち、これら入口管52と出口管53との間
に、フィルタ54を取付けたアキュムレータ5とから成
り、前記出口管53を前記圧縮要素4の吸入通路46に
接続している圧縮機において、前記フィルタ54で画成
された出口管配設側空間56から前記圧縮要素4の低圧
室に至る低圧ガス経路に、該低圧ガス経路を流れる低圧
ガスの圧力を検出する低圧センサー7を設けると共に、
前記アキュムレータ5内における前記出口管配設側空間
56と、入口管配設側空間55との間に前記フィルタ5
4を側路して、該入口管配設側空間55と前記出口管配
設側空間56とを連通するバイパス路8を形成し、該バ
イパス路8に前記低圧センサー7の異常検出信号により
開放する開閉可能な開閉弁9を備えたのである。
In order to achieve the above object, the present invention comprises a compressor body 1 having a motor 2 and a compression element 4 in a closed casing 11, an inlet pipe 52 and an outlet pipe 53. In the compressor which comprises an accumulator 5 having a filter 54 mounted between the inlet pipe 52 and the outlet pipe 53, and which connects the outlet pipe 53 to the suction passage 46 of the compression element 4, the filter A low pressure sensor 7 for detecting the pressure of the low pressure gas flowing through the low pressure gas passage is provided in the low pressure gas passage from the outlet pipe arrangement side space 56 defined by 54 to the low pressure chamber of the compression element 4.
The filter 5 is provided between the outlet pipe arrangement side space 56 and the inlet pipe arrangement side space 55 in the accumulator 5.
4 is bypassed to form a bypass passage 8 that connects the inlet pipe arrangement side space 55 and the outlet pipe arrangement side space 56, and the bypass passage 8 is opened by the abnormality detection signal of the low pressure sensor 7. The on-off valve 9 that can be opened and closed is provided.

【0006】[0006]

【作用】前記アキュムレータ本体51内に大量の液冷媒
が急激に流入し、前記アキュムレータ5の前記フィルタ
54がこの液冷媒により目づまりを起こして前記出口管
配設側空間56が真空状態になり、前記出口管配設側空
間56から前記シリンダ室44に至る低圧ガス経路の圧
力が異常に下がっても、前記低圧センサー7で直ちにこ
の低圧ガス経路のガス冷媒の圧力の異常を検出し、該セ
ンサー7の異常検出信号を前記バイパス路8に設けた前
記開閉弁9に送って、該開閉弁9を開き、前記入口管配
設側空間55に停溜する冷媒を、前記バイパス路8を通
過させて前記出口管配設側空間56に供給することがで
きるので、該出口管配設側空間56の真空状態を回避で
き、前記シリンダ室44内に、圧縮機の前記圧縮要素4
における各摺動部が焼き付けを起こさない充分な量のガ
ス冷媒を供給することができるのであり、前記圧縮要素
4の各摺動部における焼き付けを止することができるの
である。
A large amount of liquid refrigerant suddenly flows into the accumulator main body 51, the filter 54 of the accumulator 5 is clogged by the liquid refrigerant, and the outlet pipe arrangement side space 56 becomes a vacuum state, Even if the pressure in the low-pressure gas path from the outlet pipe arrangement side space 56 to the cylinder chamber 44 is abnormally decreased, the low-pressure sensor 7 immediately detects the abnormal pressure of the gas refrigerant in the low-pressure gas path, and the sensor 7 Is sent to the opening / closing valve 9 provided in the bypass passage 8 to open the opening / closing valve 9 to allow the refrigerant accumulated in the inlet pipe arrangement side space 55 to pass through the bypass passage 8. Since it can be supplied to the outlet pipe arrangement side space 56, the vacuum state of the outlet pipe arrangement side space 56 can be avoided, and the compression element 4 of the compressor can be accommodated in the cylinder chamber 44.
It is possible to supply a sufficient amount of gas refrigerant that does not cause seizure in each sliding part in (4), and it is possible to stop baking in each sliding part of the compression element 4.

【0007】[0007]

【実施例】図1に示した圧縮機は、密閉形のロータリー
式の圧縮機であって、該ロータリー圧縮機の圧縮機本体
1は、密閉ケーシング11の上部に、ロータ21とステ
ータ22とから成るモータ2を内装すると共に、その下
方に、駆動軸3に従動される圧縮要素4を内装してい
る。そして、前記密閉ケーシング11の側方にアキュム
レータ5を配設している。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The compressor shown in FIG. 1 is a hermetic rotary type compressor, and a compressor body 1 of the rotary compressor comprises a rotor 21 and a stator 22 at the top of a hermetic casing 11. The motor 2 is installed inside, and the compression element 4 driven by the drive shaft 3 is installed below it. An accumulator 5 is arranged on the side of the closed casing 11.

【0008】前記圧縮要素4は、フロントヘッド41、
リアヘッド42及びこれら両ヘッド41,42間に挟着
されるシリンダ43から構成され、シリンダ室44内に
前記駆動軸3の偏心部31及びこの偏心部31に挿嵌さ
れるローラ45を内装している。
The compression element 4 includes a front head 41,
It is composed of a rear head 42 and a cylinder 43 sandwiched between the two heads 41, 42, and an eccentric portion 31 of the drive shaft 3 and a roller 45 inserted into the eccentric portion 31 are installed in a cylinder chamber 44. There is.

【0009】また、前記ケーシング11の側方に配設す
るアキュムレータ5は、アキュムレータ本体51の上方
に入口管52を、下方に出口管53を取付けており、該
出口管53は上端が前記本体51の内部で中間高さより
やや上方に位置するごとく成している。そして、これら
入口管52と出口管53との間に、前記アキュムレータ
本体51内を横断する反球面状のフィルタ54を、冷媒
流通孔をもったバッフル板59と共に取付けて、前記ア
キュムレータ本体51内を前記入口管52を配設する入
口管配設側空間55と、前記出口管53を配設する出口
管配設側空間56とに区画している。
Further, the accumulator 5 arranged on the side of the casing 11 has an inlet pipe 52 mounted above the accumulator body 51 and an outlet pipe 53 mounted below, and the outlet pipe 53 has an upper end at the body 51. It is formed so that it is located slightly above the middle height inside the. Then, between the inlet pipe 52 and the outlet pipe 53, an anti-spherical filter 54 that traverses the inside of the accumulator main body 51 is attached together with a baffle plate 59 having a refrigerant flow hole, and the inside of the accumulator main body 51 is attached. It is divided into an inlet pipe arrangement side space 55 in which the inlet pipe 52 is arranged and an outlet pipe arrangement side space 56 in which the outlet pipe 53 is arranged.

【0010】更に、前記シリンダ43には、前記アキュ
ムレータ5内の低圧ガス冷媒を前記シリンダ室44に供
給するための吸入通路46を形成しており、該吸入通路
46に、前記アキュムレータ5に取付けている前記出口
管53をインレットチューブ57を介して接続して、前
記ローラ45の偏心回転により、前記アキュムレータ5
から前記吸入通路46を介して吸入される低圧ガス冷媒
を前記シリンダ室44内で圧縮し、圧縮後の高圧ガス冷
媒を吐出口(図示せず)から前記ケーシング11内に吐
出するようにしている。
Further, the cylinder 43 is formed with a suction passage 46 for supplying the low pressure gas refrigerant in the accumulator 5 to the cylinder chamber 44, and the suction passage 46 is attached to the accumulator 5. The outlet pipe 53 is connected via an inlet tube 57, and the eccentric rotation of the roller 45 causes the accumulator 5 to move.
The low pressure gas refrigerant sucked from the above through the suction passage 46 is compressed in the cylinder chamber 44, and the compressed high pressure gas refrigerant is discharged into the casing 11 from a discharge port (not shown). .

【0011】尚、58は前記ケーシング11における前
記吸入通路46との対向位置に取付けた前記インレット
チューブ57を固定するための継手管である。
Reference numeral 58 is a joint pipe for fixing the inlet tube 57 attached to the casing 11 at a position facing the suction passage 46.

【0012】しかして、以上説明した圧縮機において、
前記フィルタ54で画成された前記出口管配設側空間5
6から前記圧縮要素4の低圧室に至る低圧ガス経路に、
該低圧ガス経路を流れる低圧ガスの圧力を検出する低圧
センサー7を設けると共に、前記アキュムレータ5内に
おける前記出口管配設側空間56と、入口管配設側空間
55との間に前記フィルタ54を側路して、該入口管配
設側空間55と前記出口管配設側空間56とを連通する
バイパス路8を形成し、該バイパス路8に前記低圧セン
サー7の異常検出信号により開放する開閉可能な開閉弁
9を備えたのである。
Therefore, in the compressor described above,
The outlet pipe arrangement side space 5 defined by the filter 54
6 to the low pressure gas path from the compression element 4 to the low pressure chamber,
A low pressure sensor 7 for detecting the pressure of the low pressure gas flowing through the low pressure gas path is provided, and the filter 54 is provided between the outlet pipe arrangement side space 56 and the inlet pipe arrangement side space 55 in the accumulator 5. Opening and closing the bypass passage 8 that connects the inlet pipe arrangement side space 55 and the outlet pipe arrangement side space 56 by side passage, and opens the bypass passage 8 by the abnormality detection signal of the low pressure sensor 7 The opening / closing valve 9 that can be used is provided.

【0013】具体的には、図1に示すように、まず、前
記吸入通路46に接続するインレットチューブ57から
前記低圧ガス経路のガス冷媒を抽出して、圧力を検出す
るのであって、該インレットチューブ57における前記
出口管53との接続口57aに、この出口管53と共
に、ガス冷媒抽出用のチューブ6を接続し、このチュー
ブ6に前記低圧センサー7を接続するのである。即ち、
前記インレットチューブ57における前記接続口57a
の形状を、前記出口管53とこの出口管53から流出し
た低圧ガスを抽出する前記チューブ6とを密着させた状
態で接続可能な形状に形成するのであって、前記接続口
57aを前記出口管53の外径に沿う大径部と、前記チ
ューブ6の外径に沿う小径部とをもつ形状と成すのであ
り、前記出口管53と前記チューブ6とを前記接続口5
7aに接続した後に該接続口57aをロウ付けなどによ
り密封し、前記出口管53から流出したガス冷媒を前記
チューブ6から抽出して、前記低圧センサー7において
圧力を検出するごとく成したのである。尚、前記インレ
ットチューブ57を固定するための前記継手管58の形
状も、前記インレットチューブ57の形状に沿った形状
と成すのである。
Specifically, as shown in FIG. 1, first, the gas refrigerant in the low-pressure gas path is extracted from the inlet tube 57 connected to the suction passage 46 to detect the pressure. The outlet pipe 53 is connected to the outlet port 53a of the tube 57 for connecting to the outlet pipe 53, and the gas refrigerant extraction tube 6 is connected to the outlet pipe 53. The low pressure sensor 7 is connected to the tube 6. That is,
The connection port 57a in the inlet tube 57
Is formed in such a shape that the outlet pipe 53 and the tube 6 for extracting the low-pressure gas flowing out from the outlet pipe 53 can be connected to each other in close contact with each other, and the connection port 57a is connected to the outlet pipe 57a. The outlet pipe 53 and the tube 6 are connected to each other through the connecting port 5 and the large diameter portion along the outer diameter of the tube 53 and the small diameter portion along the outer diameter of the tube 6.
After connecting to 7a, the connection port 57a is sealed by brazing or the like, the gas refrigerant flowing out from the outlet pipe 53 is extracted from the tube 6, and the low pressure sensor 7 detects the pressure. The shape of the joint pipe 58 for fixing the inlet tube 57 is also a shape that follows the shape of the inlet tube 57.

【0014】また、前記アキュムレータ5に設ける前記
バイパス路8は、細い銅製のチューブにより形成し、か
つ、前記アキュムレータ本体51の外部に配設するので
あって、前記バイパス路8の一端を前記フィルタ54の
前記アキュムレータ本体51への取付位置近くに接続し
て、前記入口管配設側空間55内に開口させると共に、
他端を前記出口管配設側空間56に対応する前記アキュ
ムレータ本体51の中間部に接続して、前記出口管配設
側空間56内に開口させて、前記バイパス路8により前
記フィルタ54を側路して前記入口管配設側空間55と
前記出口管配設側空間56とを連通するごとく成したの
である。さらに、前記バイパス路8の中間部に、前記イ
ンレットチューブ57から抽出したガス冷媒の圧力を検
出する前記低圧センサー7の検出信号により開閉する開
閉弁9を介装したのであり、前記低圧センサー7が前記
低圧ガス経路のガス冷媒の圧力の異常低下を検出したと
きに異常検出信号を前記開閉弁9に送り、該開閉弁9を
開いて、前記入口管配設側空間55に溜る液冷媒を前記
バイパス路8を介して前記出口管配設側空間56に供給
するごとく成している。
The bypass passage 8 provided in the accumulator 5 is formed of a thin copper tube and is arranged outside the accumulator body 51. One end of the bypass passage 8 is provided with the filter 54. Is connected to the accumulator main body 51 near its mounting position and opened in the inlet pipe arrangement side space 55,
The other end is connected to an intermediate portion of the accumulator main body 51 corresponding to the outlet pipe arrangement side space 56 and opened in the outlet pipe arrangement side space 56, and the filter 54 is closed by the bypass passage 8. The inlet pipe arrangement side space 55 and the outlet pipe arrangement side space 56 are made to communicate with each other by a path. Furthermore, an on-off valve 9 that opens and closes according to a detection signal of the low-pressure sensor 7 that detects the pressure of the gas refrigerant extracted from the inlet tube 57 is provided at an intermediate portion of the bypass passage 8, and the low-pressure sensor 7 is When an abnormal decrease in the pressure of the gas refrigerant in the low-pressure gas path is detected, an abnormality detection signal is sent to the on-off valve 9, the on-off valve 9 is opened, and the liquid refrigerant accumulated in the inlet pipe arrangement side space 55 is removed. The gas is supplied to the outlet pipe arrangement side space 56 via the bypass passage 8.

【0015】斯くすることにより、前記アキュムレータ
本体51内に前記入口管52から大量の液冷媒が急激に
流入し、前記アキュムレータ5の前記フィルタ54がこ
の液冷媒により目づまりを起こして前記出口管配設側空
間56が真空状態になり、前記出口管配設側空間56か
ら前記シリンダ室44に至る低圧ガス経路の圧力が異常
に下がったときには、前記低圧センサー7で直ちにこの
低圧ガス経路のガス冷媒の圧力の異常を検出し、該セン
サー7の異常検出信号を前記バイパス路8に設けた前記
開閉弁9に送って、該開閉弁9を開き、前記入口管配設
側空間55に停溜する冷媒を、前記バイパス路8を通過
させて前記出口管配設側空間56に供給して、該出口管
配設側空間56の圧力を上昇させることができるのであ
る。このとき、前記出口管配設側空間56は圧力が異常
低下しているので、前記入口管配設側空間55から供給
される冷媒の多くが液冷媒であっても、この液冷媒は、
蒸発してガス化するのである。従って、前記フィルタ5
4の全面が液冷媒により覆われて前記出口管配設側空間
56が真空状態になっても、前記低圧センサー7の異常
検出信号により直ちに前記入口管配設側空間55に停溜
する冷媒を前記バイパス路8を介して前記出口管配設側
空間56に供給して、該出口管配設側空間56の真空状
態を回避できるから、前記シリンダ室44内に、圧縮機
の前記圧縮要素4における各摺動部が焼き付けを起こさ
ない充分な量のガス冷媒を供給することができるのであ
り、前記圧縮要素4の各摺動部における焼き付けを防止
することができるのである。
By doing so, a large amount of liquid refrigerant rapidly flows into the accumulator main body 51 from the inlet pipe 52, and the filter 54 of the accumulator 5 is clogged by the liquid refrigerant, so that the outlet pipe is provided. When the side space 56 is in a vacuum state and the pressure in the low pressure gas path from the outlet pipe installation side space 56 to the cylinder chamber 44 is abnormally decreased, the low pressure sensor 7 immediately detects the gas refrigerant in the low pressure gas path. A refrigerant that detects an abnormality in pressure and sends an abnormality detection signal from the sensor 7 to the opening / closing valve 9 provided in the bypass passage 8 to open the opening / closing valve 9 and accumulate in the inlet pipe arrangement side space 55. Can be supplied to the outlet pipe arrangement side space 56 through the bypass passage 8 to increase the pressure of the outlet pipe arrangement side space 56. At this time, since the pressure in the outlet pipe arrangement side space 56 is abnormally lowered, even if most of the refrigerant supplied from the inlet pipe arrangement side space 55 is a liquid refrigerant, this liquid refrigerant is
It vaporizes and gasifies. Therefore, the filter 5
Even if the entire surface of 4 is covered with the liquid refrigerant and the space 56 on the outlet pipe arrangement side is in a vacuum state, the abnormality detection signal of the low pressure sensor 7 immediately causes the refrigerant accumulated in the space 55 on the inlet pipe arrangement side to be removed. By supplying the gas to the outlet pipe arrangement side space 56 through the bypass passage 8 and avoiding the vacuum state of the outlet pipe arrangement side space 56, the compression element 4 of the compressor is provided in the cylinder chamber 44. Since it is possible to supply a sufficient amount of gas refrigerant that does not cause seizure in each sliding part in (3), it is possible to prevent seizure in each sliding part of the compression element 4.

【0016】[0016]

【発明の効果】以上説明したように、本発明の圧縮機
は、前記フィルタ54で画成された出口管配設側空間5
6から前記圧縮要素4の低圧室に至る低圧ガス経路に、
該低圧ガス経路を流れる低圧ガスの圧力を検出する低圧
センサー7を設けると共に、前記アキュムレータ5内に
おける前記出口管配設側空間56と、入口管配設側空間
55との間に前記フィルタ54を側路して、該入口管配
設側空間55と前記出口管配設側空間56とを連通する
バイパス路8を形成し、該バイパス路8に前記低圧セン
サー7の異常検出信号により開放する開閉可能な開閉弁
9を備えたから、前記アキュムレータ本体51内に大量
の液冷媒が急激に流入し、前記アキュムレータ5の前記
フィルタ54がこの液冷媒により目づまりを起こして前
記出口管配設側空間56が真空状態になり、前記出口管
配設側空間56から前記シリンダ室44に至る低圧ガス
経路の圧力が異常に下がっても、前記低圧センサー7で
直ちにこの低圧ガス経路のガス冷媒の圧力の異常を検出
し、該センサー7の異常検出信号を前記バイパス路8に
設けた前記開閉弁9に送って、該開閉弁9を開き、前記
入口管配設側空間55に停溜する冷媒を、前記バイパス
路8を通過させて前記出口管配設側空間56に供給する
ことができるので、該出口管配設側空間56の真空状態
を回避でき、前記シリンダ室44内に、圧縮機の前記圧
縮要素4における各摺動部が焼き付けを起こさない充分
な量のガス冷媒を供給することができるのであり、前記
圧縮要素4の各摺動部における焼き付けを止することが
できるのである。
As described above, in the compressor of the present invention, the outlet pipe arrangement side space 5 defined by the filter 54 is formed.
6 to the low pressure gas path from the compression element 4 to the low pressure chamber,
A low pressure sensor 7 for detecting the pressure of the low pressure gas flowing through the low pressure gas path is provided, and the filter 54 is provided between the outlet pipe arrangement side space 56 and the inlet pipe arrangement side space 55 in the accumulator 5. Opening and closing the bypass passage 8 that connects the inlet pipe arrangement side space 55 and the outlet pipe arrangement side space 56 by side passage, and opens the bypass passage 8 by the abnormality detection signal of the low pressure sensor 7 Since a possible opening / closing valve 9 is provided, a large amount of liquid refrigerant rapidly flows into the accumulator main body 51, the filter 54 of the accumulator 5 is clogged by this liquid refrigerant, and the outlet pipe arrangement side space 56 is formed. Even if the pressure in the low pressure gas path from the outlet pipe arrangement side space 56 to the cylinder chamber 44 falls abnormally due to a vacuum state, the low pressure gas is immediately detected by the low pressure sensor 7. An abnormality in the pressure of the gas refrigerant in the path is detected, and an abnormality detection signal of the sensor 7 is sent to the on-off valve 9 provided in the bypass passage 8 to open the on-off valve 9 and the inlet pipe arrangement side space 55 Since the refrigerant stored in the outlet pipe arrangement side space 56 can be supplied through the bypass passage 8 to the outlet pipe arrangement side space 56, a vacuum state of the outlet pipe arrangement side space 56 can be avoided, and the cylinder chamber 44 It is possible to supply a sufficient amount of gas refrigerant that does not cause seizure in each sliding part of the compression element 4 of the compressor, and stop the seizure in each sliding part of the compression element 4. Can be done.

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

【図1】本発明の圧縮機の実施例を示す一部切り欠き断
面図。
FIG. 1 is a partially cutaway sectional view showing an embodiment of a compressor of the present invention.

【図2】従来例を示す断面図。FIG. 2 is a sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1 圧縮機本体 11 密閉ケーシング 2 モータ 4 圧縮要素 46 吸入通路 5 アキュムレータ 52 入口管 53 出口管 54 フィルタ 55 入口管配設側空間 56 出口管配設側空間 7 低圧センサー 8 バイパス路 9 開閉弁 DESCRIPTION OF SYMBOLS 1 Compressor body 11 Airtight casing 2 Motor 4 Compression element 46 Intake passage 5 Accumulator 52 Inlet pipe 53 Outlet pipe 54 Filter 55 Inlet pipe arrangement side space 56 Outlet pipe arrangement side space 7 Low pressure sensor 8 Bypass passage 9 Open / close valve

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】密閉ケーシング11内にモータ2と圧縮要
素4とを備えた圧縮機本体1と、入口管52及び出口管
53をもち、これら入口管52と出口管53との間に、
フィルタ54を取付けたアキュムレータ5とから成り、
前記出口管53を前記圧縮要素4の吸入通路46に接続
している圧縮機であって、前記フィルタ54で画成され
た出口管配設側空間56から前記圧縮要素4の低圧室に
至る低圧ガス経路に、該低圧ガス経路を流れる低圧ガス
の圧力を検出する低圧センサー7を設けると共に、前記
アキュムレータ5内における前記出口管配設側空間56
と、入口管配設側空間55との間に前記フィルタ54を
側路して、該入口管配設側空間55と前記出口管配設側
空間56とを連通するバイパス路8を形成し、該バイパ
ス路8に前記低圧センサー7の異常検出信号により開放
する開閉可能な開閉弁9を備えていることを特徴とする
圧縮機。
1. A compressor body 1 having a motor 2 and a compression element 4 in a closed casing 11, an inlet pipe 52 and an outlet pipe 53, and between the inlet pipe 52 and the outlet pipe 53,
And an accumulator 5 with a filter 54 attached,
A compressor that connects the outlet pipe 53 to the suction passage 46 of the compression element 4, and a low pressure from the outlet pipe arrangement side space 56 defined by the filter 54 to the low pressure chamber of the compression element 4. A low pressure sensor 7 for detecting the pressure of the low pressure gas flowing through the low pressure gas passage is provided in the gas passage, and the outlet pipe arrangement side space 56 in the accumulator 5 is provided.
And the inlet pipe disposition side space 55, the filter 54 is bypassed to form the bypass passage 8 that connects the inlet pipe disposition side space 55 and the outlet pipe disposition side space 56, A compressor characterized in that the bypass passage (8) is provided with an opening / closing valve (9) which can be opened / closed by an abnormality detection signal of the low pressure sensor (7).
JP3220171A 1991-08-30 1991-08-30 Compressor Withdrawn JPH0642488A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3220171A JPH0642488A (en) 1991-08-30 1991-08-30 Compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3220171A JPH0642488A (en) 1991-08-30 1991-08-30 Compressor

Publications (1)

Publication Number Publication Date
JPH0642488A true JPH0642488A (en) 1994-02-15

Family

ID=16747001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3220171A Withdrawn JPH0642488A (en) 1991-08-30 1991-08-30 Compressor

Country Status (1)

Country Link
JP (1) JPH0642488A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000161272A (en) * 1998-11-30 2000-06-13 Matsushita Electric Ind Co Ltd Accumulator for multicylinder compressor
JP2013104325A (en) * 2011-11-11 2013-05-30 Daikin Industries Ltd Compressor unit
JP2016017694A (en) * 2014-07-08 2016-02-01 株式会社富士通ゼネラル Compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000161272A (en) * 1998-11-30 2000-06-13 Matsushita Electric Ind Co Ltd Accumulator for multicylinder compressor
JP2013104325A (en) * 2011-11-11 2013-05-30 Daikin Industries Ltd Compressor unit
JP2016017694A (en) * 2014-07-08 2016-02-01 株式会社富士通ゼネラル Compressor

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Effective date: 19981112