JPS59115494A - Trouble detector for scroll type compressor - Google Patents

Trouble detector for scroll type compressor

Info

Publication number
JPS59115494A
JPS59115494A JP22550182A JP22550182A JPS59115494A JP S59115494 A JPS59115494 A JP S59115494A JP 22550182 A JP22550182 A JP 22550182A JP 22550182 A JP22550182 A JP 22550182A JP S59115494 A JPS59115494 A JP S59115494A
Authority
JP
Japan
Prior art keywords
scroll member
permanent magnet
detector
rotation
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP22550182A
Other languages
Japanese (ja)
Inventor
Shigeru Suzuki
茂 鈴木
Takashi Michihashi
道端 孝
Mitsukane Inagaki
稲垣 光金
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.)
Toyota Industries Corp
Original Assignee
Toyoda Jidoshokki Seisakusho KK
Toyoda Automatic Loom Works 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 Toyoda Jidoshokki Seisakusho KK, Toyoda Automatic Loom Works Ltd filed Critical Toyoda Jidoshokki Seisakusho KK
Priority to JP22550182A priority Critical patent/JPS59115494A/en
Publication of JPS59115494A publication Critical patent/JPS59115494A/en
Pending 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
    • F04C28/00Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28Safety arrangements; Monitoring
    • 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
    • F04C2270/05Speed
    • F04C2270/052Speed angular
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00Control
    • F05B2270/10Purpose of the control system
    • F05B2270/101Purpose of the control system to control rotational speed (n)

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

PURPOSE:To disconnect a clutch in time of perceiving anything unusual in a scroll type compressor as well as to aim at preventing a car from damageable causes, by installing a rotation detector composed of a coiled magnetic body in position toward the kinetic trace of a detected member consisting of a magnetic material which exercises a periodic motion inside a housing. CONSTITUTION:On the outer circumferential surface of a front housing 2, there is provided with a setting hole 2b in order to correspond to a rotation trace on the outer circumferential surface of a balance weight 14 as a detected member exercising a periodic motion, and an iron core 30 as a magnetic body and a detector 27 consisting of a detection coil 31 and a permanent magnet 32 or the like are fitted in this place. An amplifier 34 is connected to the detection coil 31, while a pulse presence detector 35 is connected to this amplifier 34. And, locking happens due to seizuer or binding or the biting of foreign substances whereby a speed of rotation becomes dropped, and when this rotation speed comes to less than the setting value preset in the pulse presence detector 35, an OFF signal is outputted from the detector 35 to a solenoid clutch K, and operation of the compressor is stopped, thus any damage to a car such as clutch breakdown and/or belt snapping can be prevented.

Description

【発明の詳細な説明】 本発明は固定スクロール部材のうず巻部と可動スクロー
ル部材のうず巻部とを偏心してかみ合わせ、可動スクロ
ール部材のうず巻部を公転させて両う才巻部間に形成さ
れる密閉状の圧縮室を中心方向へ移卯1させながら容積
を減縮して中心部から圧縮流体を吐出させるようにした
スクロール型圧縮機における異常検出装置に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION The present invention involves eccentrically engaging a spiral portion of a fixed scroll member and a spiral portion of a movable scroll member, and causing the spiral portion of the movable scroll member to revolve to form a spiral portion between the two spiral portions. The present invention relates to an abnormality detection device for a scroll compressor, in which compressed fluid is discharged from the center by moving a closed compression chamber toward the center while reducing the volume.

従来、車両空調装置においてはエンジンのクランクブー
りの駆動力を同一のヘルドを介して圧縮機、オルタネー
タ、ファン等の機器に伝達し、ニス1〜ダウンを図るよ
うになっていた。このため、圧縮器が回転異常になると
、ベル]−がスリップして切断されるという危険があり
、車両故障の原因になるという欠陥かあった。
Conventionally, in a vehicle air conditioner, the driving force of the crankshaft of the engine is transmitted to devices such as a compressor, an alternator, and a fan through the same heald, thereby achieving air conditioning. For this reason, if the compressor rotates abnormally, there is a risk that the bell may slip and be cut off, which may cause a malfunction of the vehicle.

本発明は上記欠陥を解消するために成されたものであっ
て、その目的はスクロール型圧縮機の異常時にクラッチ
を速かに切り、ベル1〜切れ等車両に被害が及ぶのを防
ぐことかできるスクロール型圧縮機の異常検出装置を提
供することにある。
The present invention has been made to eliminate the above-mentioned defects, and its purpose is to quickly disengage the clutch in the event of an abnormality in the scroll compressor to prevent damage to the vehicle such as the bell breaking. An object of the present invention is to provide an abnormality detection device for a scroll compressor.

以下、本発明を具体化した第1実施例を第1図〜餡5図
に−)いて説明すると、センタハウシンク1の左端部に
はフロンl−ハウジング2が図示しない複数本の締付ポ
ル1−により固定され、センタハウジンク1の右端部に
はりャハウジノク3が一体的に設けられている。
Hereinafter, a first embodiment embodying the present invention will be described with reference to FIGS. 1-, and a carrier housing knob 3 is integrally provided at the right end of the center housing 1.

フロントハウシング2の中央部には円筒状のホス部4が
一体に形成さね、その中心孔4 aには左右一対のラジ
アルポールヘアリング5により回転軸6が支承され、外
端部において駆動源に接続される。又、回転軸6とボス
部40間にはシャフトシール機構7が介装されており、
このソール機構7を収納するシール室Fの上部と連通ず
るように前記ホス部4の基端上部には冷媒ガスの導入孔
41)が設けられている。
A cylindrical host portion 4 is integrally formed in the center of the front housing 2, and a rotating shaft 6 is supported in the center hole 4a by a pair of left and right radial pole hair rings 5, and a drive source is connected at the outer end. connected to. Further, a shaft seal mechanism 7 is interposed between the rotating shaft 6 and the boss portion 40,
A refrigerant gas introduction hole 41) is provided at the upper base end of the host portion 4 so as to communicate with the upper portion of the seal chamber F in which the sole mechanism 7 is housed.

前記回転軸6の内端部には偏心軸8が連結されており、
この偏心軸B上には可動スクロール部材9を構成する円
形状をなす基板9aの背面中心部に一体的に形成したホ
ス部91)かラジアルニードルベアリンク10又はブレ
ーンへアリンクを介して回転可能に支承さねている。前
記可動スクロール部材9の前向には第4図に示すように
うず巻部9Cが一体的に形成されている。
An eccentric shaft 8 is connected to the inner end of the rotating shaft 6,
On this eccentric shaft B, a host portion 91) integrally formed at the center of the back surface of a circular substrate 9a constituting the movable scroll member 9 is rotatable via a radial needle bear link 10 or a link to the brain. I don't support it. A spiral portion 9C is integrally formed on the front side of the movable scroll member 9, as shown in FIG.

一方、センタハウジング1とフロントハウジング2の接
合部に形成された環状の係止段部には可動スクロール部
材9の自転防止を行なう固定リング11の外周縁がキー
12にまり回動不能に係合されている。この固定リング
11を境としてフロントハウシング2側には吸入室Aが
形成され、センタハウシング1側には作動室Bが形成さ
れており、吸入室Aにはフロントハウジング2の外周上
部に貫設しt:吸入口2aにより外部回路から冷媒ガス
が導入される。さらに、固定リング11の外側部には第
2図に示すように吸入通路11g1か複数(本実施例で
は4つあるか小孔を多数設けてもよい)箇所に設けられ
、吸入室Aから作動室Bへ冷媒ガスが導入される。
On the other hand, the outer circumferential edge of a fixing ring 11 that prevents rotation of the movable scroll member 9 is fitted into a key 12 in an annular locking step formed at the joint between the center housing 1 and the front housing 2, and is engaged with the key 12 so that it cannot rotate. has been done. A suction chamber A is formed on the front housing 2 side with this fixing ring 11 as a boundary, and an operating chamber B is formed on the center housing 1 side. t: Refrigerant gas is introduced from the external circuit through the suction port 2a. Furthermore, as shown in FIG. 2, suction passages 11g are provided at one or more (four in this embodiment, or may have many small holes) locations on the outside of the fixing ring 11, and are actuated from the suction chamber A. Refrigerant gas is introduced into chamber B.

前記可動スクロール部材9の基板g a背面には第1.
2図に示すように中心を通る」−下方向に自転防止用の
ガイド溝9(1が刻設され2、前記固定リング11の前
向には第2図に示すように左右方向に自転防止用のカイ
ト溝111)が刻設されている。
On the back side of the substrate ga of the movable scroll member 9, there is a first plate.
As shown in Figure 2, a guide groove 9 (1) for preventing rotation is carved in the downward direction, and a guide groove 9 (1) for preventing rotation is carved in the front of the fixing ring 11 in the left and right direction as shown in Figure 2. A kite groove 111) for use is carved.

そして、カイト溝9(1には第3図に示すように四角環
状をなす自転防1J−,リング13が上下方向の摺動可
能に係合されるとともに、カイト溝11 l:+にも前
記自転防止リング13が第2図に示すように左右方向の
スライド可能に係合されている。
The kite groove 9 (1, as shown in FIG. 3, has a rectangular ring-shaped rotation prevention ring 1J- and a ring 13 that are slidably engaged in the vertical direction, and the kite groove 11 l: As shown in FIG. 2, the rotation prevention ring 13 is engaged so as to be slidable in the left and right direction.

従って、前記回転軸6により偏心軸8が一定の円軌跡を
描きながら第2図において時計回り方向へ例えば90度
回転されると、一体内に形成された自転防止リング13
が固定リング11のガイド溝11N)に規制されている
ので、自転防止リング13はガイド溝11))に沿って
右方へ真直ぐに平行移動され、このため基板9aのガイ
ド溝9dも」−下同じ方向に保持され、可動スクロール
部材9の自り伝は防11−される。
Therefore, when the eccentric shaft 8 is rotated, for example, 90 degrees clockwise in FIG. 2 while drawing a constant circular trajectory by the rotating shaft 6, the rotation prevention ring 13 formed in one piece
is regulated by the guide groove 11N) of the fixed ring 11, so the anti-rotation ring 13 is translated straight to the right along the guide groove 11)), and therefore the guide groove 9d of the substrate 9a is also It is held in the same direction, and self-transmission of the movable scroll member 9 is prevented.

前記回転軸6の内端部には、可動スクロール部材9の公
転運1■11をPlmに行なうための磁性材料からなる
バランスウェイト14が固着さhでいる。
A balance weight 14 made of a magnetic material is fixed to the inner end of the rotating shaft 6 for causing the movable scroll member 9 to revolve 1-11 at Plm.

niT 記センタハウシング1とリヤハウジング3によ
り形成さねた係Iに段部には、固定スクロール部材15
を構成する円形状をなす厚肉の基板15aの外周縁か回
動不能にかつ半径方向へ移動不能に挟着されている。こ
の基板15 +Lの前面には第4図に示すよ5にうず巻
部1511が前記可動スクロール部材のうず巻部9 (
zと常時2箇所以上で局部的に接触するように一体的に
固着されている。又、前記基板15i1のほぼ中心部に
は該基板15aとリヤハウシンク3とにJ:り形成され
た吐出室りへ圧縮された冷媒カスを吐出し得る吐j1X
通路15(zが透設されている。この吐出通路15(]
は吐出室り内においてリテーナ16によって位置規制さ
れる吐出弁17により閉鎖されている。前記吐出室りの
底部には吐出口3aが透設されている。
A fixed scroll member 15 is attached to the stepped portion formed by the center housing 1 and the rear housing 3.
The outer periphery of a circular, thick-walled substrate 15a constituting the substrate 15a is clamped so as to be non-rotatable and non-movable in the radial direction. On the front surface of this substrate 15+L, as shown in FIG.
It is fixed integrally with z so that it is always in local contact with z at two or more places. Further, at approximately the center of the substrate 15i1, there is a discharge chamber J1X capable of discharging compressed refrigerant scum into a discharge chamber formed between the substrate 15a and the rear housing sink 3.
The passage 15 (z is transparent. This discharge passage 15 ()
is closed by a discharge valve 17 whose position is regulated by a retainer 16 within the discharge chamber. A discharge port 3a is transparently provided at the bottom of the discharge chamber.

従って、前記偏心軸8により可動スクロール部材9のう
ず巻部9(5が固定スクロール部材15のうず巻部15
1)に局部的に接触しながら第4図時計回り方向へ公転
されると、両うず巻部9C1151〕の接触部がうず巻
部151)の内周向上を中心へ向って移動し、このため
2つの接触部によって形成される密閉状の圧縮室Cが徐
々に取り込A、Jご冷媒ガスを圧縮しなから中心部へ移
動さね1、吐出通路15 (:から吐出室りへ吐出され
て吐出口311から外部回路へ圧送される。
Therefore, the eccentric shaft 8 causes the spiral portion 9 of the movable scroll member 9 (5 is the spiral portion 15 of the fixed scroll member 15).
1), when it revolves in the clockwise direction in Fig. 4 while locally contacting, the contact portions of both spiral portions 9C1151) move toward the center along the inner circumference of the spiral portion 151), and thus The airtight compression chamber C formed by the two contact parts gradually takes in the refrigerant gas A and J, then moves it to the center 1 and discharges it from the discharge passage 15 into the discharge chamber. The liquid is then pressure-fed from the discharge port 311 to the external circuit.

一方、フロントハウジング2の前面に一体F 成したボ
ス部4の外周にはランアルポールベアリング18を介し
てプーリ19が定位置において回転可能に支承さね、図
示しないベルトにより積極回転される。このプーリ19
と前記回転1Iql16のフロント側突出部との間には
電磁クラッチI(が装着さね、ており、これについて述
べると、フロント/’tウジング2の前面には前記プー
リ19の内側にリヤ側から凹設した環状溝19aに嵌入
する収納ケース20が固着さり1、同ケース20のフロ
ント側から凹設した環状溝20aにはコイル21が収納
され、同コイル21と収納ケース20により電磁石が構
成されでいる。
On the other hand, a pulley 19 is rotatably supported at a fixed position on the outer periphery of a boss portion 4 formed integrally with the front surface of the front housing 2 via a Lanyard bearing 18, and is actively rotated by a belt (not shown). This pulley 19
An electromagnetic clutch I is installed between the front protrusion of the rotation 1 Iql 16 and the front side of the front housing 2 is connected to the inside of the pulley 19 from the rear. A storage case 20 that fits into a recessed annular groove 19a is fixed to the recess 1, a coil 21 is stored in an annular groove 20a recessed from the front side of the case 20, and the coil 21 and storage case 20 constitute an electromagnet. I'm here.

さらに、回転lll1l16の突出部にはキー22を介
してハブ23が固着され、同ハブ23の外周には板バネ
等の弾性部材24を介して円環状の被動クラッチ板25
が前後方向の相対移動可能に装着されている。なお、前
記弾性部材24は鋲26によりハフ23と被動クラッチ
板25にかしめ着されている。
Further, a hub 23 is fixed to the protrusion of the rotation lll1l16 via a key 22, and an annular driven clutch plate 25 is attached to the outer periphery of the hub 23 via an elastic member 24 such as a leaf spring.
is attached so that it can move relative to each other in the front and rear directions. The elastic member 24 is caulked to the huff 23 and the driven clutch plate 25 with studs 26.

従って、電磁石のコイル21に通電されると、同電磁石
により被動クラッチ板25がリヤ側へ吸引すれてブーI
J19のフロント面、すなわち駆動クラッチ板191〕
へ圧接され、この結果プーリ19の回転が被動クラッチ
板25−1弾性部材24及びハブ23を介して回転軸6
に伝達される。この電磁クラッチKがONされている状
態では、電磁石のコイル21が回転軸6を取り巻くよう
に配設されているので、回転軸6及びバランスウェイト
14に磁力線が通るが、本実施例てd−回転1IIll
I6のフロン)・側かN極に、回転軸6のリヤ側従って
バランスウェイ1へ14がS極になるように前記コイル
21の巻方向あるいは通電方向を設定している。
Therefore, when the coil 21 of the electromagnet is energized, the driven clutch plate 25 is attracted to the rear side by the electromagnet, and the boot I
Front surface of J19, that is, drive clutch plate 191]
As a result, the rotation of the pulley 19 is transmitted to the rotating shaft 6 via the driven clutch plate 25-1, the elastic member 24, and the hub 23.
transmitted to. When the electromagnetic clutch K is turned on, the electromagnetic coil 21 is arranged so as to surround the rotating shaft 6, so that lines of magnetic force pass through the rotating shaft 6 and the balance weight 14. Rotation 1IIll
The winding direction or current direction of the coil 21 is set so that the front side of I6 is the north pole, and the rear side of the rotating shaft 6, that is, the balance way 1 14 is the south pole.

次に、本発明の異常検出装置について説明すると、前記
フロントハウジンク2の外周面には吸入室Aと連通し、
かつ周期運動を行なう被検出部材としてのバランスウェ
イ1〜14の外周面の回転軌跡と対応するように取イ」
孔21+が設けられていて、ここに回転検出器27が0
リング28を介して気密的にかつストップリング29に
より取り外し可能に嵌入されている。この検出器27は
中心部に埋設された磁性体としての鉄心30と、同鉄心
30の回りに巻装した検出コイル31と、鉄心30の外
側端面(第1図の下側)に接合した永久磁石32と、前
記鉄心30、コイル31及び永久磁石32を露出しない
ように樹脂材料も[7くは軽金属材料等により一体にモ
ールドした取付ケース33とにより構成されている。前
記永久磁石32のバランスウェイト14側の磁極は、電
磁クラッチにがONされたときにバランスウェイ!・1
4に生じる磁極(例、S極)と反対の磁極(例、N極)
になるようにしている。
Next, to explain the abnormality detection device of the present invention, the outer circumferential surface of the front housing 2 communicates with the suction chamber A;
Also, it is arranged so as to correspond to the rotation locus of the outer peripheral surface of the balance ways 1 to 14, which are members to be detected that perform periodic motion.
A hole 21+ is provided in which the rotation detector 27 is placed.
It is fitted airtightly via a ring 28 and removably via a stop ring 29. This detector 27 consists of an iron core 30 as a magnetic material buried in the center, a detection coil 31 wound around the iron core 30, and a permanent It is composed of a magnet 32 and a mounting case 33 integrally molded with a resin material [7] or a light metal material or the like so that the iron core 30, coil 31, and permanent magnet 32 are not exposed. The magnetic pole of the permanent magnet 32 on the balance weight 14 side is connected to the balance weight 14 when the electromagnetic clutch is turned on.・1
4 magnetic pole (e.g., S pole) and the opposite magnetic pole (e.g., N pole)
I'm trying to make it happen.

前記検出コイル31には増幅器34が接続され、同増幅
器34にはパルス有無検出器35が接続されている。そ
して、同パルス有無検出器35がらはパルス数が設定値
以下となったとき、電磁クラッチKに対しOFF信号を
出力するようにしている。
An amplifier 34 is connected to the detection coil 31, and a pulse presence/absence detector 35 is connected to the amplifier 34. The pulse presence/absence detector 35 outputs an OFF signal to the electromagnetic clutch K when the number of pulses becomes less than a set value.

次に、前記のように構成した検出装置についてその作用
及び効果を説明する。
Next, the operation and effects of the detection device configured as described above will be explained.

電磁クラッチKがONされて回転軸6が回転していると
きにに1、第1図に太い矢印で示すように電磁石のコイ
ル21により回転軸6の内部には磁力線が走り、同回転
軸6のフロント側がN極に、バランスウェイト14側が
S極になっており、バランスウェイト14は鉄心3o及
び永久磁石32と周期的に対面する。このとき、バラン
スウェイト14はS極であり、永久磁石32の内端はN
極のため、両者が第5図(a)に示すように対面したと
きには太い矢印で示すように永久磁石32のN極から鉄
心30を経てバランスウェイト14へ高密度の磁力線が
流れ、反対に画、者が第5図(1))に示すように離反
したときには、太い矢印で示すように主として永久磁石
32のN極から磁石自身のS極へ磁力線が流れるために
、バランスウェイト14が永久磁石32と対面している
が否かによって検出コイル31を通る磁束密度が著しく
変動し、検出コイル31に起電力が発生する。ヰして、
この起電力は圧縮機の回転数と対応するパルス電圧とし
て増幅器34へ入力され、その後パルス有無検出器35
へ入力される。ここで、圧縮枦の焼付あるいは異物噛込
等によるロックが起きて回転数が低下してパルス有無検
出器35に予め設定された設定値以下になると、同検出
器35がら電磁クラッチKにOFF信号が出力され、圧
縮機の運転が停止される。
When the electromagnetic clutch K is turned on and the rotating shaft 6 is rotating, magnetic lines of force run inside the rotating shaft 6 due to the electromagnetic coil 21, as shown by the thick arrow in FIG. The front side of the magnet is a north pole, and the balance weight 14 side is a south pole, and the balance weight 14 periodically faces the iron core 3o and the permanent magnet 32. At this time, the balance weight 14 is the S pole, and the inner end of the permanent magnet 32 is the N pole.
Because of the poles, when the two face each other as shown in FIG. 5(a), high-density lines of magnetic force flow from the N pole of the permanent magnet 32 to the balance weight 14 via the iron core 30, as shown by the thick arrow, and vice versa. , when the person leaves the permanent magnet as shown in FIG. The magnetic flux density passing through the detection coil 31 varies significantly depending on whether it is facing the detection coil 32 or not, and an electromotive force is generated in the detection coil 31. Then,
This electromotive force is input to the amplifier 34 as a pulse voltage corresponding to the rotation speed of the compressor, and then the pulse presence/absence detector 35
is input to. Here, when a lock occurs due to seizure of the compression rod or a foreign object is caught, and the rotational speed decreases to below a preset value in the pulse presence/absence detector 35, the detector 35 sends an OFF signal to the electromagnetic clutch K. is output and the compressor operation is stopped.

さて、本発明実施例においては電磁クラッチKにより磁
化されるバランスウェイト14と対応するフロントハウ
ジング2の外周部に回転検出器27を設けて圧縮機の回
転数をパルス電圧として検出し、回転数が所定回転数以
下になったとき、前記電磁クラッチKをOFFするよう
にしたので、圧縮機の異常時に速かに回転を停止して車
両に被害が及ぶのを防止することができる。
Now, in the embodiment of the present invention, a rotation detector 27 is provided on the outer periphery of the front housing 2 corresponding to the balance weight 14 magnetized by the electromagnetic clutch K, and the rotation speed of the compressor is detected as a pulse voltage. Since the electromagnetic clutch K is turned off when the number of revolutions falls below a predetermined number, it is possible to quickly stop the rotation in the event of an abnormality in the compressor, thereby preventing damage to the vehicle.

次に、本発明の第2〜第6の実施例を第6図〜第11図
について説明する。
Next, second to sixth embodiments of the present invention will be described with reference to FIGS. 6 to 11.

第6図及び第7図に示す第2実施例は、周期運動を行な
う磁性材料からなる被検出部材として、往復直線運動を
行なう自転防止リング13を使用し、回転検出器27は
センタハウジング1の外周面に対し作動室Bと連通する
ように貫設した取付孔1aに装着している。そして、自
転防止リング13が回転検出器27に接近したときと、
遠ざかったときの鉄心30を通る磁束密度の変化を利用
してコイル31に電圧パルスを発生するようにしている
。この@2実施例の効果も第1実施例と同様である。
The second embodiment shown in FIGS. 6 and 7 uses an anti-rotation ring 13 that makes a reciprocating linear motion as a detected member made of a magnetic material that makes a periodic motion, and a rotation detector 27 is mounted on the center housing 1. It is attached to a mounting hole 1a formed through the outer peripheral surface so as to communicate with the working chamber B. When the anti-rotation ring 13 approaches the rotation detector 27,
A voltage pulse is generated in the coil 31 by utilizing changes in the magnetic flux density passing through the iron core 30 when the iron core 30 moves away. The effects of this @2 embodiment are also similar to those of the first embodiment.

第8図に示す第3実施例は、周期運動を行なう磁性材料
からなる被検出部材として、公転運動を行なう可動スク
ロール部材9の基板9a外周向に埋込み固淀した鉄心3
6又は永久磁石37を使用し、同永久磁石の運動軌跡に
向けて回転検出器27をセンタハウジング1に埋込み固
定している。
In the third embodiment shown in FIG. 8, an iron core 3 embedded and fixed in the outer circumferential direction of a substrate 9a of a movable scroll member 9 that makes a revolution movement is used as a detected member made of a magnetic material that makes a periodic movement.
6 or a permanent magnet 37, and a rotation detector 27 is embedded and fixed in the center housing 1 toward the motion locus of the permanent magnet.

そして、可動スクロール部材90基板9aが回転検出器
27に近づいたり遠ざかったりすることで検出器27か
ら電圧パルスが発生するようにしており、効果は第1実
施例と同様である。なお、この第3実施例の検出器27
はドレーン用の密栓を兼用してもよい。
When the movable scroll member 90 substrate 9a approaches or moves away from the rotation detector 27, a voltage pulse is generated from the rotation detector 27, and the effect is the same as that of the first embodiment. Note that the detector 27 of this third embodiment
may also be used as a drain plug.

第9図に示す第4実施例は基板9aの外周に永久磁石3
8を埋込みそこへさらに感温フェライト39を埋込み、
正常時は感温フェライト39が磁路として作用し、カス
不足又は摩擦(可動及び固定のスクロール部材の摺動に
よる)熱によって感温フェライト39の温度が上昇する
と、感温フェライト39の磁性が低下し、パルス電圧が
著しく弱くなり、異常と判断されるようにしている。な
お、この第4実施例において前記永久磁石38を省略し
、感温フェライト39のみにしてもよい。
In the fourth embodiment shown in FIG. 9, a permanent magnet 3 is attached to the outer periphery of a substrate 9a.
8 and further embed temperature-sensitive ferrite 39 there.
Under normal conditions, the temperature-sensitive ferrite 39 acts as a magnetic path, and when the temperature of the temperature-sensitive ferrite 39 increases due to lack of scum or heat due to friction (sliding of the movable and fixed scroll members), the magnetism of the temperature-sensitive ferrite 39 decreases. However, the pulse voltage becomes significantly weaker, and it is determined to be abnormal. In this fourth embodiment, the permanent magnet 38 may be omitted and only the temperature-sensitive ferrite 39 may be used.

第10図に示す第5実施例は可動スクロール部材9のう
す巻部9C端面に埋込んだ鉄心40又は永久磁石41を
被検出部材とし、固定スクロール部材15の基板15a
には感温フェライト42の外周に検出コイル31を巻い
た回転検出器27を前記鉄心40と対応して設けている
。この実施例では感温フェライト42が吐出室り内の吐
出ガス温度の影響を受は易くなっており、ガス不足等に
より吐出カス湿度が異常に高いときには感温フエライ1
〜42が磁性を失ないパルスが極めて弱くなるから異常
と判断中ることができ、回転検出以外にカス不足検1(
4機能を兼用させたものである。
In the fifth embodiment shown in FIG. 10, an iron core 40 or a permanent magnet 41 embedded in the end face of a thinly wound portion 9C of a movable scroll member 9 is used as a detected member, and a substrate 15a of a fixed scroll member 15 is used.
A rotation detector 27 in which a detection coil 31 is wound around the outer periphery of a temperature-sensitive ferrite 42 is provided corresponding to the iron core 40 . In this embodiment, the temperature-sensitive ferrite 42 is easily affected by the temperature of the discharged gas in the discharge chamber, and when the humidity of discharged scum is abnormally high due to gas shortage, etc., the temperature-sensitive ferrite 1 is
~ 42 does not lose its magnetism and the pulse becomes extremely weak, so it can be judged as abnormal, and in addition to rotation detection, scrap shortage detection 1 (
It has four functions.

第11図に示す第6実施例は可動スクロールのうず巻部
9G端面に鉄心40又は永久磁石41を埋込み、固定ス
クロールの基板15aに感温フェライト43をV1通固
定し、さらにリヤハウシング3には検出器27を装着し
て構成されている。この実施例は前述の第5実施例と比
較して検出器27の取付及びコイル31のリ−1・線の
引き出しが容易になるとともに、感温フェライト43が
カスにさらされかつ感温フェライ1〜43の前端面を鉄
心40に接触させてもよいので、検出精度を向」−する
ことができるが、その他の効果は第5実施例と同様であ
る。
In the sixth embodiment shown in FIG. 11, an iron core 40 or a permanent magnet 41 is embedded in the end face of the spiral portion 9G of the movable scroll, a temperature-sensitive ferrite 43 is fixed through V1 to the substrate 15a of the fixed scroll, and furthermore, the rear housing 3 is It is configured by mounting a detector 27. This embodiment makes it easier to attach the detector 27 and draw out the wire 1 of the coil 31 compared to the fifth embodiment described above. Since the front end surfaces of 43 to 43 may be brought into contact with the iron core 40, the detection accuracy can be improved, but other effects are the same as in the fifth embodiment.

なお、本発明は次のような実施例で具体化することもで
きる。
Note that the present invention can also be embodied in the following embodiments.

前記各実施例において第12図に示すように永久磁石4
4に検出コイル45を巻装した回転検出器27を使用す
ること。
In each of the above embodiments, as shown in FIG.
A rotation detector 27 having a detection coil 45 wound around the rotation detector 27 is used.

以上詳述し、たまうに、本発明はハウジング内で周期運
動を行なう磁性材料からなる被検出部材の運動軌跡に向
けて、磁性体にコイルを巻いた回転検出器を設置したこ
とにより、スクロール型圧縮機の異常時にクラッチを速
かに切り、クラッチの破損又はベルト切れ等車両に被害
が及ぶのを防ぐことができる効果がある。
As described above in detail, the present invention has a scroll-type rotation detector installed with a coil wound around a magnetic material toward the locus of movement of a member to be detected made of a magnetic material that performs periodic motion within a housing. This has the effect of quickly disengaging the clutch in the event of an abnormality in the compressor, thereby preventing damage to the vehicle such as damage to the clutch or belt breakage.

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

第1図は本発明の第1実施例を示す中央部縦断面図、第
2図は第1図のX−X線断面図、第3図は自転防止リン
グの斜視図、第4図は第1図のY−Y線断面図、第5図
(a) 、 (+))はそれぞれ回転検出器の作用状態
を示す路体正面図、第6図及び第7図は本発明の第2実
施例を示す要部の断面図、第8図〜第11図はそれぞれ
本発明の第3実施例〜第6実施例を示す要部の断面図、
第12図は回転検出器の別個を示す略体正向図である。 十ンタハウシング1、フロントハウシング2、リヤハウ
シング3、回転軸6、偏心軸8、可動スクロール部材9
、固定リング11、自転防止リング13、バランスウェ
イI−14、固定スクロール部材15、コイル21、回
転検出器27、鉄心30.36.40、検出コイル31
,45、永久磁石32,37.3B、41.44、感温
フエライ1−39 、42 、43、電磁クラッチK。 特許出願人   株式会社豊田自動織機製作所代 理 
人   弁理士  恩 1)博 宣区 へ 法 第121!1 −570=
FIG. 1 is a vertical cross-sectional view of the central part showing the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line X-X of FIG. 1, FIG. 3 is a perspective view of the anti-rotation ring, and FIG. 1 is a cross-sectional view taken along the line Y-Y in FIG. 8 to 11 are sectional views of main parts showing an example, and FIGS. 8 to 11 are sectional views of main parts showing third to sixth embodiments of the invention, respectively.
FIG. 12 is a schematic front view showing a separate rotation detector. Tenta housing 1, front housing 2, rear housing 3, rotating shaft 6, eccentric shaft 8, movable scroll member 9
, fixed ring 11, anti-rotation ring 13, balance way I-14, fixed scroll member 15, coil 21, rotation detector 27, iron core 30, 36, 40, detection coil 31
, 45, permanent magnet 32, 37.3B, 41.44, temperature-sensitive magnet 1-39, 42, 43, electromagnetic clutch K. Patent Applicant Toyota Industries Corporation Representative
Person Patent Attorney On 1) Law No. 121 to Bo Xuan-ku! 1 -570=

Claims (1)

【特許請求の範囲】 】 ハウシングのフロント側端面はぼ中心部に回転軸を
積極回転可能に貫通支承し、この回転軸の内端に固着さ
れた偏心軸に対し可動スクロール部材を相対回転可能に
支承し、前記ハウジングの内側面には前記可動スクロー
ル部材の自転防止機構ヲ設け、さらにハウジングのリヤ
側には固定スクロール部材を配設してそのうず巻部と可
動スクロール部材のうず巻部を少なくとも2個所以−に
で部分接触した状態で重ね合せ、前記可動スクロール部
材を一定の円軌跡上を公転させて両うず巻部間に形成さ
れた密閉状の圧縮室を中心に向って移動させながら容積
の減縮を生じさせて一方向性連続圧縮作用を行なわせ、
固定スクロール部材の基板に貫設しtコ吐出通路から外
部へ吐出するようにしたスクロール型圧縮機において、
ハウジング内で周期運動を行なう磁性材料からなる被検
出部材の運動軌跡に向けて、磁性体にコイルを巻いた回
転検出器を設置したことを特徴とするスクロール型圧縮
機の異常検出装置。 2 被検出部材は電磁クラッチの作動時、同クラッチの
電磁石によって励磁されるバランスウェイトである特許
請求の範囲第1項記載のスクロール型圧縮機の異常検出
装置。 3 被検出部材は可動スクロール部材の基板外周に埋込
まれた鉄心、永久磁石、感温フェライト又は永久磁石と
感温フェライトである特許請求の範囲第1項記載のスク
ロール型圧縮機の異常検出装置。 4 被検出部材は可動スクロール部材のうず巻部端面に
埋込まれた鉄心又は永久磁石であり、回転検出器は固定
スクロール部材の基板に対し前記鉄心又は永久磁石の公
転軌跡と対向するように固着され、同検出器は感温フェ
ライトに検出コイルを巻装し、感温フェライトの後端面
に永久磁石を接合して構成されている特許請求の範囲第
1項記載のスクロール型圧縮機の異常検出装置。 5 被検出部材は可動スクロール部材のうず巻部端面に
埋込まわtコ鉄心又は永久磁石であり、固定スクロール
部材の基板には前記鉄心又は永久磁石の公転軌跡と対応
して感温フェライトが貫設され、リヤハウジングには同
感淵フエライ1−と対向して回転検出器が設けられてい
る特許請求の範囲第1項記載のスクロール型圧縮機の異
常検出装置。
[Claims]] A rotating shaft is positively rotatably supported through the front end surface of the housing at the center thereof, and a movable scroll member is rotatable relative to an eccentric shaft fixed to the inner end of the rotating shaft. A rotation prevention mechanism for the movable scroll member is provided on the inner surface of the housing, and a fixed scroll member is disposed on the rear side of the housing so that the spiral portion of the fixed scroll member and the spiral portion of the movable scroll member are at least The movable scroll member is overlapped in a state of partial contact at two or more places, and while the movable scroll member is revolved on a constant circular trajectory and moved toward the center of the closed compression chamber formed between both spiral portions. causing a volume reduction and performing a unidirectional continuous compression action,
In a scroll type compressor that is disposed through a base plate of a fixed scroll member and discharges air to the outside from a discharge passage,
An abnormality detection device for a scroll compressor, characterized in that a rotation detector having a coil wound around a magnetic material is installed in the direction of the motion locus of a detected member made of a magnetic material that performs periodic motion within a housing. 2. An abnormality detection device for a scroll compressor according to claim 1, wherein the member to be detected is a balance weight that is excited by an electromagnet of the electromagnetic clutch when the electromagnetic clutch is activated. 3. The abnormality detection device for a scroll compressor according to claim 1, wherein the member to be detected is an iron core, a permanent magnet, a temperature-sensitive ferrite, or a permanent magnet and a temperature-sensitive ferrite embedded in the outer periphery of a substrate of a movable scroll member. . 4 The member to be detected is an iron core or a permanent magnet embedded in the end face of the spiral portion of the movable scroll member, and the rotation detector is fixed to the substrate of the fixed scroll member so as to face the orbit of the iron core or the permanent magnet. Detecting an abnormality in a scroll compressor according to claim 1, wherein the detector is constructed by winding a detection coil around a temperature-sensitive ferrite and joining a permanent magnet to the rear end surface of the temperature-sensitive ferrite. Device. 5 The member to be detected is an iron core or a permanent magnet embedded in the end face of the spiral portion of the movable scroll member, and a temperature-sensitive ferrite is penetrated through the substrate of the fixed scroll member corresponding to the orbit of the iron core or permanent magnet. 2. The abnormality detection device for a scroll compressor according to claim 1, wherein the rear housing is provided with a rotation detector facing the same-sensing groove 1-.
JP22550182A 1982-12-21 1982-12-21 Trouble detector for scroll type compressor Pending JPS59115494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22550182A JPS59115494A (en) 1982-12-21 1982-12-21 Trouble detector for scroll type compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22550182A JPS59115494A (en) 1982-12-21 1982-12-21 Trouble detector for scroll type compressor

Publications (1)

Publication Number Publication Date
JPS59115494A true JPS59115494A (en) 1984-07-03

Family

ID=16830304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22550182A Pending JPS59115494A (en) 1982-12-21 1982-12-21 Trouble detector for scroll type compressor

Country Status (1)

Country Link
JP (1) JPS59115494A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144563U (en) * 1985-02-27 1986-09-06
US5238094A (en) * 1993-01-07 1993-08-24 Ford Motor Company Enclosed clutch assembly to reduce noise
US5275269A (en) * 1993-01-07 1994-01-04 Ford Motor Company Combined drive pulley and rotor shaft support for a refrigerant compressor
US5295812A (en) * 1993-01-07 1994-03-22 Ford Motor Company Electromagnetic clutch and pulley bearing arrangement
EP0622547A1 (en) * 1993-04-30 1994-11-02 Mitsubishi Jukogyo Kabushiki Kaisha Speed detector of scroll-type fluid machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664183A (en) * 1979-10-26 1981-06-01 Toyoda Autom Loom Works Ltd Driving force control device for compressor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664183A (en) * 1979-10-26 1981-06-01 Toyoda Autom Loom Works Ltd Driving force control device for compressor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61144563U (en) * 1985-02-27 1986-09-06
US5238094A (en) * 1993-01-07 1993-08-24 Ford Motor Company Enclosed clutch assembly to reduce noise
US5275269A (en) * 1993-01-07 1994-01-04 Ford Motor Company Combined drive pulley and rotor shaft support for a refrigerant compressor
US5295812A (en) * 1993-01-07 1994-03-22 Ford Motor Company Electromagnetic clutch and pulley bearing arrangement
EP0622547A1 (en) * 1993-04-30 1994-11-02 Mitsubishi Jukogyo Kabushiki Kaisha Speed detector of scroll-type fluid machine
US5395220A (en) * 1993-04-30 1995-03-07 Mitsubishi Jukogyo Kabushiki Kaisha Speed detector of scroll-type fluid machine
AU668810B2 (en) * 1993-04-30 1996-05-16 Mitsubishi Jukogyo Kabushiki Kaisha Speed detector of scroll-type fluid machine
CN1065027C (en) * 1993-04-30 2001-04-25 三菱重工业株式会社 Speed detector of scroll-type fluid machine

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