JPH01224581A - Solenoid valve for capacity control in compressor and drive control thereof - Google Patents
Solenoid valve for capacity control in compressor and drive control thereofInfo
- Publication number
- JPH01224581A JPH01224581A JP63050487A JP5048788A JPH01224581A JP H01224581 A JPH01224581 A JP H01224581A JP 63050487 A JP63050487 A JP 63050487A JP 5048788 A JP5048788 A JP 5048788A JP H01224581 A JPH01224581 A JP H01224581A
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- coil
- residual magnetism
- solenoid valve
- core
- 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
Links
- 230000005389 magnetism Effects 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000003507 refrigerant Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 3
- 239000010962 carbon steel Substances 0.000 abstract description 3
- 229910000997 High-speed steel Inorganic materials 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 abstract 2
- 239000000956 alloy Substances 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 102200082816 rs34868397 Human genes 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 229910000756 V alloy Inorganic materials 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は自動車用冷房装置に使用されるコンプレッサ、
の容量を制御するため冷媒ガス通路の開閉用に使用され
る電磁弁及びその帽■り御方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a compressor used in an automobile cooling system,
The present invention relates to a solenoid valve used for opening and closing a refrigerant gas passage to control the capacity of a refrigerant gas passage, and a method for controlling the solenoid valve.
（従来の技術）
従来この種の電磁弁としては、第２図に示す構成のもの
が知られている。この電磁弁においては、コンプレッサ
本体１内の冷媒ガス通路２の高圧側通路２ａと低圧側通
路２ｂとの間に弁室３が設けられるとともに、その弁室
３の底部に弁座４が形成され、該弁座４と対向する位置
に弁体５が接離可能に配置されている。コンプレッサ本
体１上にはケーシング６内にコア７やコイル８等が組付
けられた電磁石９が装置され、弁体５は電磁石９のプラ
ンジャ１０と一体的に構成されるとともに、コア７にば
ね１１を介して対向配置されている。(Prior Art) As a conventional electromagnetic valve of this type, one having a configuration shown in FIG. 2 is known. In this electromagnetic valve, a valve chamber 3 is provided between a high pressure side passage 2a and a low pressure side passage 2b of a refrigerant gas passage 2 in a compressor body 1, and a valve seat 4 is formed at the bottom of the valve chamber 3. , a valve body 5 is disposed at a position facing the valve seat 4 so as to be removable. An electromagnet 9 in which a core 7, a coil 8, etc. are assembled in a casing 6 is installed on the compressor body 1, and the valve body 5 is integrally constructed with a plunger 10 of the electromagnet 9. are placed facing each other through the
そして、常には第２図に実線で示すように弁体５がばね
１１の付勢力により弁座４に圧接されて冷媒ガス通路２
が閉成された状態にあり、電磁石９のコイル８に通電さ
れて磁力が発生した時には、同図に鎖線で示すようにプ
ランジャ１０がコア７に吸引されて弁体５が弁座４から
離間され、冷媒ガス通路２が開放されて冷媒ガスが高圧
側通路２ａから低圧側通路２ｂに流れるようになってい
る。As shown by the solid line in FIG.
is in the closed state, and when the coil 8 of the electromagnet 9 is energized and a magnetic force is generated, the plunger 10 is attracted to the core 7 and the valve body 5 is separated from the valve seat 4, as shown by the chain line in the figure. The refrigerant gas passage 2 is opened and the refrigerant gas flows from the high pressure side passage 2a to the low pressure side passage 2b.
（発明が解決しようとする課題）−
前記従来の電磁弁はその作動時すなわちプランジャ間１
０をばね１１の付勢力に抗してコア７に吸引された状態
に保持するときには、コイル８への通電を継続する必要
がある。ところが、コイル８に対して大きな電流を流し
続けるとコイルが発熱し、起磁力が低下する。コイルの
発熱を防ぐためにはコイル線径を太くする必要があり、
コイルが大型化して電磁石全体が大きくなり、コンプレ
ッサをエンジンルーム内に組込むことが困難になるとい
う問題がある。(Problem to be Solved by the Invention) - The conventional solenoid valve has a
0 is maintained in a state where it is attracted to the core 7 against the biasing force of the spring 11, it is necessary to continue energizing the coil 8. However, if a large current continues to flow through the coil 8, the coil generates heat and the magnetomotive force decreases. In order to prevent the coil from generating heat, it is necessary to increase the diameter of the coil wire.
There is a problem in that the coil becomes larger and the entire electromagnet becomes larger, making it difficult to incorporate the compressor into the engine compartment.
一方、磁気回路の一部例えばコアを永久磁石により形成
し、この磁力によりプランジャを吸引状態に保持する技
術は公知であるが、プランジャストロークが非常に小さ
い（０，３１１１１１程度）ので、非通電状態において
プランジャをコアから引離した状態に保持することが困
難となり、電磁弁に適用することは難しい。すなわち、
プランジャをコアから引離した状態に保持するためには
ばねを強くする必要が生じ、ばねを強くした場合にはプ
ランジャを吸引位置まで引付けるために必要なコイルの
起磁力を増大する必要があり、コイルが大型化する。又
、これを避けるため永久磁石の磁力を弱くすると、プラ
ンジャを吸引状態に保持する力が不充分となる。On the other hand, there is a known technology in which a part of the magnetic circuit, such as the core, is formed of a permanent magnet and the plunger is held in an attracted state by this magnetic force, but since the plunger stroke is very small (about 0.311111), it is not energized. In this case, it becomes difficult to maintain the plunger separated from the core, making it difficult to apply it to a solenoid valve. That is,
In order to keep the plunger separated from the core, it is necessary to make the spring stronger, and if the spring is made stronger, it is necessary to increase the magnetomotive force of the coil required to attract the plunger to the attraction position. , the coil becomes larger. Furthermore, if the magnetic force of the permanent magnet is weakened to avoid this, the force for holding the plunger in the attracted state will become insufficient.
本発明は前記の問題点に着目してなされたものであって
、その目的は電磁弁の作動時にコイルの発熱が問題とな
らずしかもコイルの小型化が可能となるコンプレッサの
容量制御用電磁弁及びその駆動制御方法を提供ケること
にある。The present invention has been made with attention to the above-mentioned problems, and its purpose is to provide a solenoid valve for controlling the capacity of a compressor that does not cause problems with heat generation in the coil when the solenoid valve is operated, and that also allows the coil to be made smaller. and a drive control method thereof.
（課題を解決するための手段）
前記の目的を達成するため本発明の電磁弁においては、
冷媒ガス通路を開閉する弁体を駆動するプランジャ又は
コアの少なくとも一方を、残留磁気の値が大きな材料で
形成した。この材料としては例えば、炭素鋼の８４５Ｃ
の焼入れ焼戻し材、高速度鋼（０，８％Ｃ１１５％Ｃ０
，４，５％Ｃｒ等含有）、パイカロイ材（Ｆｅ、Ｃｒ、
Ｖ合金）が使用される。(Means for Solving the Problem) In order to achieve the above object, the solenoid valve of the present invention has the following features:
At least one of the plunger or the core that drives the valve body that opens and closes the refrigerant gas passage is made of a material with a large residual magnetism value. For example, this material is carbon steel 845C.
Quenched and tempered material, high speed steel (0.8%C115%C0
, 4.5% Cr, etc.), Picaloy material (Fe, Cr,
V alloy) is used.
又、前記電磁弁の駆動制御方法として、コイルに短時間
通電することによりプランジャをばねの付勢力に抗して
所定位置に移動させるとともに残留磁気により同位置に
保持し、コイルに前記と逆方向の電流を短時間流すこと
により残留磁気を消去してプランジャをばねの付勢力に
より元の位置に復帰させるようにした。In addition, as a drive control method for the solenoid valve, the plunger is moved to a predetermined position against the biasing force of the spring by energizing the coil for a short time, and is held at the same position by residual magnetism, and the plunger is moved in the opposite direction to the above-mentioned direction. By passing a current for a short period of time, the residual magnetism is erased and the plunger is returned to its original position by the biasing force of the spring.
（作用）
本発明の電磁弁ではコイルに短時間通電するとコイルの
起磁力によりコア、プランジャが磁化されてコア、プラ
ンジャ間に吸引力が作用し、弁体がプランジャとともに
駆動される。コイルへの通電を遮断した後もプランジャ
又はコアの少なくとも一方に両者を吸引状態に保持する
残留磁気が存在し、弁体′は作動位置に保持される。コ
イルに前記とは逆方向の電流を短時間流すことによりコ
ア、プランジャの残留磁気が消去され、プランジャがば
ねの付勢力により元の位置に復帰され弁体もプランジャ
とともに元の位置に復帰する。(Function) In the electromagnetic valve of the present invention, when the coil is energized for a short time, the core and plunger are magnetized by the magnetomotive force of the coil, an attractive force acts between the core and the plunger, and the valve body is driven together with the plunger. Even after the coil is de-energized, there is a residual magnetism in at least one of the plunger or the core that holds them in an attracted state, and the valve body' is held in the operating position. By passing a current in the opposite direction to the coil for a short time, residual magnetism in the core and plunger is erased, the plunger is returned to its original position by the biasing force of the spring, and the valve body is also returned to its original position together with the plunger.
（実施例）
以下本発明を具体化した一実施例を第１〜４図に従って
説明する。電磁弁１２の機械的構成は従来の電磁弁と同
様な構成であるが、プランジャ１０の材料として残留磁
気の値が大きな材料例えば８４５Ｇ（炭素鋼）の焼入れ
焼戻し材、高速度１Ｍ（０，８％０１１５％Ｃ０，４，
５％Ｏｒ等含有）あるいはパイカロイ材（Ｆｅ １Ｃｒ
、、Ｖ合金）が使用されている。(Example) An example embodying the present invention will be described below with reference to FIGS. 1 to 4. The mechanical structure of the solenoid valve 12 is similar to that of a conventional solenoid valve, but the material of the plunger 10 is a material with a large residual magnetism value, such as 845G (carbon steel) quenched and tempered material, and a high speed 1M (0.8 %0115%C0,4,
5% Or etc.) or Picaloy material (Fe 1Cr etc.)
, , V alloy) are used.
電磁弁１２の駆動回路は第３図に示すように、電磁弁用
電源Ｅに対してホトカップラ１３８〜１３ｄが二対接続
され、端子Ａにはホトカップラ１３ａ、１３ｄが接続さ
れ、端子Ｂにはホトカップラ１３ｂ、１３ｃが接続され
ている。As shown in FIG. 3, the drive circuit for the solenoid valve 12 has two pairs of photocouplers 138 to 13d connected to a power source E for the solenoid valve, photocouplers 13a and 13d to terminal A, and a photocoupler to terminal B. 13b and 13c are connected.
次に前記のように構成された電磁弁１２の作用について
説明する。電磁弁１２のコイル８に電流が流れていない
状態では第１図（ａ ）に示すように、プランジャ１０
はばね１１の力により弁体５が弁座４に圧接される位置
に保持され、冷媒ガス通路２が閉塞された状態に保持さ
れる。この状態で電磁弁１２の駆動回路の端子Ａにパル
ス信号が入力されると、ホトカップラ１３ａ、１３ｄの
発光ダイオード１４８．１４ｄが発光してホトトランジ
スタ１５ａ、１５ｄがオンとなり、第３図に矢印Ｐで示
すようにホトトランジスタ１５ａ。Next, the operation of the solenoid valve 12 configured as described above will be explained. When no current flows through the coil 8 of the solenoid valve 12, the plunger 10
The force of the spring 11 holds the valve body 5 in a position where it is pressed against the valve seat 4, and the refrigerant gas passage 2 is held in a closed state. When a pulse signal is input to the terminal A of the drive circuit of the solenoid valve 12 in this state, the light emitting diodes 148.14d of the photocouplers 13a and 13d emit light and the phototransistors 15a and 15d are turned on, and the arrow P shown in FIG. As shown, a phototransistor 15a.
１５ｄを通るようにＮ磁片１２に対して正電流が流れる
。電磁弁１２に正の電流が流れるとコイル８に起磁力が
発生し、コア７及びプランジャ１０が磁化されてプラン
ジｔＰ１０はばね１１の力に抗してコアγ側へ移動し、
第１図＜ｂ ＞に示すように弁体５が弁座４から離間し
て冷媒ガス通路２の高圧側通路２ａと低圧側通路２ｂと
が連通状態となり、冷媒ガスが高圧側通路２ａから弁室
３及び弁座４を通って低圧側通路２ｂへと流れる。コイ
ル８に対する通電時間は第４図に示すように端子Δに加
えられるパルスの幅と等しいごく短時間であるが、プラ
ンジャ１０は残留磁気の値が大きな材料で形成されてい
るので、コイル８に電流が流れなくなった後もプランジ
ャ１０にはばね１１の付勢力に抗してプランジャ１０を
コア７に対して吸着状態に保持するに充分な残留磁気が
存在するため、第１図（Ｃ）に示すようにプランジャ１
０は同位置に保持され、冷媒ガス通路２は開放状態に保
持される。A positive current flows to the N magnetic piece 12 through 15d. When a positive current flows through the solenoid valve 12, a magnetomotive force is generated in the coil 8, the core 7 and the plunger 10 are magnetized, and the plunger tP10 moves toward the core γ side against the force of the spring 11.
As shown in FIG. 1<b>, the valve body 5 is separated from the valve seat 4, and the high pressure side passage 2a and the low pressure side passage 2b of the refrigerant gas passage 2 are brought into communication, and the refrigerant gas flows from the high pressure side passage 2a to the valve seat 4. It flows through the chamber 3 and the valve seat 4 to the low pressure side passage 2b. The energization time for the coil 8 is a very short time equal to the width of the pulse applied to the terminal Δ as shown in FIG. 4, but since the plunger 10 is made of a material with a large residual magnetism, Even after the current stops flowing, there is sufficient residual magnetism in the plunger 10 to keep the plunger 10 attracted to the core 7 against the biasing force of the spring 11. Plunger 1 as shown
0 is held at the same position, and the refrigerant gas passage 2 is held open.
゛この状態で端子Ｂにパルス電圧を加えると、ホトカッ
プラ１３ｂ、１３Ｃの発光ダイオード１４ｂ。゛If a pulse voltage is applied to terminal B in this state, the light emitting diodes 14b of the photocouplers 13b and 13C.
１４Ｃが発光してホトトランジスタ１５ｂ、１５Ｃがオ
ン状態となり、電磁弁１２には第３図に矢印Ｑで示すよ
うに前記とは逆方向に電流が流れる。14C emits light, phototransistors 15b and 15C are turned on, and current flows through the electromagnetic valve 12 in the opposite direction as shown by arrow Q in FIG.
この時の電流の大きさは抵抗Ｒの作用により前記正方向
の電流より小さな値となる。電磁弁１２１なわらコイル
８に前記とは逆方向すなわち負の電流が流れると、第１
図（ｄ ）に示すようにコイル８にはプランジャ１０の
残留磁気を打消す方向への起磁力が生じ、プランジャ１
０の残留磁気が消失してプランジャ１０がばね１１の力
により弁体５が弁座４と当接する位置まで移動される。The magnitude of the current at this time is smaller than the positive direction current due to the action of the resistor R. When a negative current flows through the solenoid valve 121 and the straw coil 8, the first
As shown in Figure (d), a magnetomotive force is generated in the coil 8 in the direction of canceling the residual magnetism of the plunger 10, and the plunger 1
0 residual magnetism disappears and the plunger 10 is moved by the force of the spring 11 to a position where the valve body 5 comes into contact with the valve seat 4.
これにより冷媒ガス通路２が閉塞される。弁体５を開放
位置に移動させるとともに同位置に保持するために必要
な電流を流す時間及びその状態を解除するための通電時
間はいずれも短いため、コイル８への通電時にコイル８
の発熱はほとんど生じない。This closes the refrigerant gas passage 2. The time required to apply the current to move the valve body 5 to the open position and hold it in the same position and the time required to apply the current to release the state are both short, so when the coil 8 is energized, the coil 8
Almost no fever occurs.
なお、本発明は前記実施例に限定されるものではなく、
例えば、プランジャ１０の材質が残留磁気を長時間にわ
たって所定の値に保持できないようなものの場合には、
第５図に示すように弁体５を開放位置に保持する期間の
途中においてコイル８に正方向の電流を周期的に流すよ
うにしてもよい。又、電磁弁の構成として通電時に閉塞
状態に保持され、非通電時に開放状態に保持される構成
のものを採用したり、電磁弁の駆動回路として第３図に
示した回路以外のものを使用してもよい。Note that the present invention is not limited to the above embodiments,
For example, if the material of the plunger 10 is such that the residual magnetism cannot be maintained at a predetermined value for a long time,
As shown in FIG. 5, a positive current may be periodically passed through the coil 8 during the period during which the valve body 5 is held in the open position. In addition, the solenoid valve may be configured to be kept closed when energized and kept open when de-energized, or a circuit other than the one shown in Figure 3 may be used as the solenoid valve drive circuit. You may.
さらには、プランジャ１０の代わりにコア７を残留磁気
の値が大きな材料で形成したり、コア７及びプランジャ
１０の両者を残留磁気の値が大きな材１’ｌで形成して
もよい。Furthermore, instead of the plunger 10, the core 7 may be formed of a material with a large residual magnetism value, or both the core 7 and the plunger 10 may be formed with a material 1'l with a large residual magnetism value.
（発明の効果）
以上詳述したように、本発明によれば弁体を作動させる
プランジャをばねの力に抗して作動位置に保持する場合
に、コイルに対する通電時間が短時間でよいため通電時
の発熱がほとんど問題とならず、コイルを小型化でき電
磁弁全体をも小型化することが可能となる。(Effects of the Invention) As described in detail above, according to the present invention, when the plunger that operates the valve body is held in the operating position against the force of the spring, the time required for energizing the coil is short. The heat generated during operation is hardly a problem, the coil can be made smaller, and the entire solenoid valve can also be made smaller.
第１図（ａ ）〜（ｄ ）は電磁弁の作用を示す概略図
、第２図は電磁弁の要部断面図、第３図は電磁弁の駆動
回路図、第４図はコイルへの通電電流、プランジャの残
留磁力、弁動作の関係を示す線図、第５図は同じく変更
例の縮図である。
冷媒ガス通路２、弁体５、コア７、コイル８、プランジ
ャ１０、ばね１１、電磁弁１２゜特許出願人 株式
会社 豊田自動織機製作新式 理 人 弁理士
恩１）博宣第４図Figures 1 (a) to (d) are schematic diagrams showing the action of the solenoid valve, Figure 2 is a sectional view of the main parts of the solenoid valve, Figure 3 is a drive circuit diagram of the solenoid valve, and Figure 4 is a diagram showing the operation of the solenoid valve. FIG. 5, which is a diagram showing the relationship between the applied current, the residual magnetic force of the plunger, and the valve operation, is a microcosm of the modified example. Refrigerant gas passage 2, valve body 5, core 7, coil 8, plunger 10, spring 11, solenoid valve 12゜Patent applicant Toyota Industries Co., Ltd. Shinshiki Seisaku Patent attorney
1) Hironobu Figure 4
Claims (2)
又はコアの少なくとも一方を、残留磁気の値が大きな材
料で形成したコンプレッサの容量制御用電磁弁。1. A solenoid valve for controlling the capacity of a compressor, in which at least one of a plunger or a core that drives a valve body that opens and closes a refrigerant gas passage is made of a material with a large residual magnetism value.
又はコアの少なくとも一方を、残留磁気の値が大きな材
料で形成し、コイルに短時間通電することによりプラン
ジャをばねの付勢力に抗して所定位置に移動させるとと
もに残留磁気により同位置に保持し、コイルに前記と逆
方向の電流を短時間流すことにより残留磁気を消去して
プランジャをばねの付勢力により元の位置に復帰させる
コンプレッサの容量制御用電磁弁の駆動制御方法。2. At least one of the plunger or the core that drives the valve body that opens and closes the refrigerant gas passage is made of a material with a large residual magnetism value, and by energizing the coil for a short time, the plunger can be moved to a predetermined position against the biasing force of the spring. Compressor capacity control in which the plunger is moved to the same position and held in the same position by residual magnetism, and by passing a current in the opposite direction to the coil for a short time, the residual magnetism is erased and the plunger is returned to its original position by the biasing force of the spring. Drive control method for solenoid valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63050487A JPH01224581A (en) | 1988-03-03 | 1988-03-03 | Solenoid valve for capacity control in compressor and drive control thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63050487A JPH01224581A (en) | 1988-03-03 | 1988-03-03 | Solenoid valve for capacity control in compressor and drive control thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01224581A true JPH01224581A (en) | 1989-09-07 |
Family
ID=12860274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63050487A Pending JPH01224581A (en) | 1988-03-03 | 1988-03-03 | Solenoid valve for capacity control in compressor and drive control thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01224581A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000300672A (en) * | 1999-04-22 | 2000-10-31 | E Phillips Robert | Supply system which responds to activity |
| JP2006517280A (en) * | 2003-02-06 | 2006-07-20 | スターマン・インダストリーズ・インコーポレーテッド | Electromagnetic valve assembly |
| JP2007244153A (en) * | 2006-03-10 | 2007-09-20 | Tdk Taiwan Corp | Magnetic levitated actuator motor |
-
1988
- 1988-03-03 JP JP63050487A patent/JPH01224581A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000300672A (en) * | 1999-04-22 | 2000-10-31 | E Phillips Robert | Supply system which responds to activity |
| JP2006517280A (en) * | 2003-02-06 | 2006-07-20 | スターマン・インダストリーズ・インコーポレーテッド | Electromagnetic valve assembly |
| JP2007244153A (en) * | 2006-03-10 | 2007-09-20 | Tdk Taiwan Corp | Magnetic levitated actuator motor |
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