JP2001193855A - Four-way selector valve - Google Patents
Four-way selector valveInfo
- Publication number
- JP2001193855A JP2001193855A JP2000006105A JP2000006105A JP2001193855A JP 2001193855 A JP2001193855 A JP 2001193855A JP 2000006105 A JP2000006105 A JP 2000006105A JP 2000006105 A JP2000006105 A JP 2000006105A JP 2001193855 A JP2001193855 A JP 2001193855A
- Authority
- JP
- Japan
- Prior art keywords
- main valve
- rotor
- valve body
- sub
- valve seat
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は流路を切換える四方
切換弁に関する。詳しくは、ヒートポンプ等の冷媒回路
における冷暖房の切換または除霜回路の切換に用いられ
る四方切換弁に関する。The present invention relates to a four-way switching valve for switching a flow path. More specifically, the present invention relates to a four-way switching valve used for switching between cooling and heating or a defrosting circuit in a refrigerant circuit such as a heat pump.
【０００２】[0002]
【従来の技術】従来、ヒートポンプ等の冷媒回路におけ
る冷暖房サイクルの切換には四方切換弁が用いられてい
るが、この一例としてロータリー型の四方切換弁を図８
に示す。この従来の四方切換弁は上部にソレノイドコイ
ル１と、該ソレノイドコイル１の下部に設けられた弁本
体２とよりなり、ソレノイドコイル１はヨーク１ａ，１
ｂを有し、弁本体２は、ヨーク１ａ，１ｂに接して設け
られた円筒状の筒３と、該筒３の下部に固設された弁座
４及び上部を封止した蓋５と、筒３の中を回動可能に設
けられた主弁体６とよりなり、該主弁体６は高圧連通溝
７及び低圧連通溝８が形成された弁体９と、該弁体９の
外周に固定されたヨーク１０及びマグネット１１とより
なり、中心に軸１２が挿通されて、弁座４上に回転可能
に支持されている。2. Description of the Related Art Conventionally, a four-way switching valve has been used for switching a cooling and heating cycle in a refrigerant circuit such as a heat pump. As an example of this, a rotary type four-way switching valve is shown in FIG.
Shown in This conventional four-way switching valve comprises a solenoid coil 1 at an upper part and a valve body 2 provided at a lower part of the solenoid coil 1, and the solenoid coil 1 is composed of yokes 1a, 1
b, the valve body 2 includes a cylindrical tube 3 provided in contact with the yokes 1a and 1b, a valve seat 4 fixed to a lower portion of the tube 3, and a lid 5 sealing an upper portion thereof. The main valve body 6 is provided rotatably in the cylinder 3. The main valve body 6 has a valve body 9 in which a high-pressure communication groove 7 and a low-pressure communication groove 8 are formed, and an outer periphery of the valve body 9. The shaft 12 is inserted through the center of the yoke 10 and the magnet 11 and is rotatably supported on the valve seat 4.
【０００３】また、弁座４には高圧導管１３と低圧導管
１４と２つの導管が開口して設けられている。なお、符
号１５は弁体９を弁座４にバネ受け１６を介して押圧す
るバネであり、１７は主弁体６の回転を制限するストッ
パである。The valve seat 4 is provided with an open high-pressure conduit 13, a low-pressure conduit 14, and two conduits. Reference numeral 15 denotes a spring that presses the valve body 9 against the valve seat 4 via a spring receiver 16, and 17 denotes a stopper that restricts rotation of the main valve body 6.
【０００４】上記のように構成された切換弁において、
ソレノイドコイル１に通電すると該ソレノイドコイル１
のヨーク１ａ，１ｂが磁極となり、マグネット１１を有
する主弁体６を回動させ、弁体９の高圧連通溝７と低圧
連通溝８とが二つの導管と高圧導管１３及び低圧導管１
４を選択連通させ流路を切り換えることができるように
なっている。[0004] In the switching valve configured as described above,
When the solenoid coil 1 is energized, the solenoid coil 1
The yokes 1a and 1b become magnetic poles and rotate the main valve body 6 having the magnet 11, so that the high-pressure communication groove 7 and the low-pressure communication groove 8 of the valve body 9 are divided into two conduits, a high-pressure conduit 13 and a low-pressure conduit 1.
4 can be selectively communicated to switch the flow path.
【０００５】[0005]
【発明が解決しようとする課題】しかし上記従来の四方
切換弁においては、弁本体２の上に配置された小型のソ
レノイドコイル１の電磁力では主弁体９の受ける圧力差
が大きくなると弁体６が作動しなくなる恐れがある。そ
のため冷暖房サイクルの切換時には、圧縮機を一旦停止
させ冷暖房サイクルの高圧部と低圧部の圧力差が減少し
た後、切換える必要があるり暖房の切換に時間を要し、
特に除霜時は暖房効率が低下するという問題がある。However, in the above-described conventional four-way switching valve, if the pressure difference received by the main valve body 9 becomes large due to the electromagnetic force of the small solenoid coil 1 disposed on the valve body 2, the valve body becomes large. 6 may not work. Therefore, when switching the cooling and heating cycle, after the compressor is temporarily stopped and the pressure difference between the high pressure part and the low pressure part of the cooling and heating cycle is reduced, it is necessary to switch or take time to switch the heating,
In particular, there is a problem that the heating efficiency decreases during defrosting.
【０００６】本発明は上記従来の問題点に鑑み、小型な
ソレノイドコイルを用いても高い圧力差での切換を可能
とした安価な四方切換弁を実現することを目的とする。The present invention has been made in view of the above-mentioned conventional problems, and has as its object to realize an inexpensive four-way switching valve capable of switching with a high pressure difference even using a small solenoid coil.
【０００７】[0007]
【課題を解決するための手段】本発明の請求項１の発明
は、円筒２８の下端に低圧導管３１と高圧導管３２と二
つの導管３３，３４を開口した平面の主弁座２９が固着
され、上端には１箇所に下方に伸びたピン３５が固着さ
れた蓋３０が固着して密封された弁箱２２と、前記弁箱
２２の内部に、主弁座２９側に低圧導管３１と二つの導
管３３，３４の一方とを選択連通する連通溝３６を有
し、且つ、該連通溝３６より上部に開口する副弁座３９
を有する連通孔３８が設けられて弁箱２２の内周で支持
され上下及び回動可能な主弁体２３と、前記主弁体２３
の上部に位置し外周に４極の永久磁石２７が設けられ、
内周下部に副弁座３９と接離する副弁体２４が配置さ
れ、内周上部に蓋３０のピン３５と接離する二つのスト
ッパ４４，４４′が設けられたローター２５と、前記ロ
ーター２５を回動駆動する磁気回路２０と、前記ロータ
ー２５の回動を主弁体２３に伝達する伝達手段と、を含
んで構成されたことを特徴とする。According to the first aspect of the present invention, a flat main valve seat 29 having a low-pressure conduit 31, a high-pressure conduit 32, and two conduits 33, 34 is fixed to the lower end of a cylinder 28. At the upper end, a lid 30 to which a pin 35 extending downward is fixed at one place is fixed and sealed, and a low-pressure conduit 31 is connected to the main valve seat 29 side inside the valve box 22. Communication groove 36 for selectively communicating with one of the three conduits 33 and 34, and a sub-valve seat 39 opening above the communication groove 36.
A main valve body 23 supported on the inner periphery of the valve box 22 and rotatable up and down, and the main valve body 23
, A four-pole permanent magnet 27 is provided on the outer periphery,
A rotor 25 provided with a sub-valve element 24 at the lower portion of the inner periphery thereof for contacting with and separating from the sub-valve seat 39 and two stoppers 44 and 44 ′ at the upper portion of the inner periphery for contacting and separating with the pin 35 of the lid 30; The magnetic circuit 20 is configured to include a magnetic circuit 20 that drives the rotation of the rotor 25 and a transmission unit that transmits the rotation of the rotor 25 to the main valve body 23.
【０００８】また、請求項２の発明は、前記磁気回路
は、前記蓋３０の上方で、該蓋３０に固着され外周にコ
イル５１が配置された導磁性のコア５０と、該コア５０
の上下に９０度ずれた状態で固着されて前記永久磁石２
７の磁極と対向するようにコの字状で下方向に舌状に伸
ばされた導磁性の２つのヨーク５２，５３とで構成され
たことを特徴とする。According to a second aspect of the present invention, there is provided the magnetic circuit, wherein the magnetic circuit comprises: a magnetically conductive core 50 fixed to the lid 30 and having a coil 51 disposed on the outer periphery thereof;
The permanent magnet 2 is fixed at a position shifted 90 degrees up and down
7 and two magnetic conductive yokes 52 and 53 extending downward in a U-shape in a U-shape so as to face the magnetic pole 7.
【０００９】また、請求項３の発明は、前記伝達手段
は、主弁体２３の上部中央に配置された平行な腕を上下
に持つねじりバネ４０と、ローター２５の内周より中心
方向に伸び上下の腕の端部に係合する凸部４５と、主弁
体２３の上面より上に伸ばされ上下の腕の中央部に挟ま
れるバネ受け４１と、で構成されたことを特徴とする。According to a third aspect of the present invention, the transmitting means includes a torsion spring 40 having upper and lower parallel arms disposed in the center of the upper portion of the main valve body 23 and extending from the inner periphery of the rotor 25 toward the center. It is characterized by comprising a convex portion 45 that engages with the ends of the upper and lower arms, and a spring receiver 41 that extends above the upper surface of the main valve body 23 and is sandwiched between the central portions of the upper and lower arms.
【００１０】また、請求項４の発明は、前記ローター２
５と蓋３０との間で、外周に円輪状の受板４９を有し中
央より外周に向かう複数の腕で形成された板バネ４８が
蓋３０の中央に固着され、主弁体２３にローター２５を
介し主弁座２９方向に付勢力を与えていることを特徴と
する。[0010] Further, the invention according to claim 4 is characterized in that the rotor 2
Between the cover 5 and the lid 30, a leaf spring 48 having a ring-shaped receiving plate 49 on the outer periphery and formed by a plurality of arms extending from the center toward the outer periphery is fixed to the center of the cover 30. 25, a biasing force is applied to the main valve seat 29 in the direction of the main valve seat 29.
【００１１】また、請求項５の発明は、前記ローター２
５の上端の外周に設けた複数の溝と該溝内に弁箱２２内
周と受板４９に接する鋼球４７が格納されると共にロー
ター２５の下端外周に設けた複数の溝と該溝内に弁箱２
２内周と主弁座２９の上面に接する鋼球４６が格納さ
れ、該上下の鋼球４６，４７によりローター２５の回動
方向と、上下の摺動方向の支持がなされることを特徴と
する。Further, the invention according to claim 5 is characterized in that the rotor 2
5 and a plurality of grooves provided on the outer periphery of the lower end of the rotor 25 and a plurality of grooves provided on the outer periphery of the lower end of the rotor 25. Valve box 2
The steel ball 46 is stored in contact with the inner circumference 2 and the upper surface of the main valve seat 29, and the upper and lower steel balls 46 and 47 support the rotating direction of the rotor 25 and the vertical sliding direction. I do.
【００１２】また、請求項６の発明は、前記副弁体２４
は鋼球であり、ローター２５内周の１か所に下方向に開
口した凹部４３に上下に摺動可能に配置され、さらに副
弁体２４の上に配置されたコイルバネ４２で主弁体２３
側に付勢力を与えられると共に、板バネ４８の付勢力は
コイルバネ４２の付勢力より大きく設定され、ねじりバ
ネ４０に挟まれたローター２５の凸部４５と主弁体２３
のバネ受け４１が中心より外周方向に直線上にある状態
で副弁座３９を閉じていることを特徴とする。Further, the invention according to claim 6 is characterized in that:
Is a steel ball, which is disposed slidably up and down in a concave portion 43 opened downward at one location on the inner periphery of the rotor 25, and is further provided with a coil spring 42 disposed on the sub-valve member 24.
And the urging force of the leaf spring 48 is set to be larger than the urging force of the coil spring 42, and the convex portion 45 of the rotor 25 sandwiched between the torsion springs 40 and the main valve body 23.
The sub-valve seat 39 is closed in a state where the spring receiver 41 is located on a straight line in the outer peripheral direction from the center.
【００１３】この構成を採ることにより、請求項１乃至
３の発明によれば、コイルの通電によりローターを所定
の角度回転させ、副弁座を開口し、主弁体の上側の圧力
を下側の圧力より小さくし、主弁体を上方向に移動させ
主弁体に働く高圧冷媒による主弁座方向への付勢力を無
くし、主弁体を回転させ流路の切換を可能にしている。
また本発明の切換弁を冷暖房回路に用いた場合、圧縮機
を運転した状態での流路の切換が可能である。さらに主
弁体の切換作動後は、主弁体は圧力により主弁座に押さ
え付けられ、コイルへの通電を必要としない。According to the first to third aspects of the present invention, the rotor is rotated by a predetermined angle by energizing the coil, the sub-valve seat is opened, and the upper pressure of the main valve body is reduced. , The main valve body is moved upward to eliminate the urging force in the main valve seat direction due to the high-pressure refrigerant acting on the main valve body, and the main valve body is rotated to enable switching of the flow path.
Further, when the switching valve of the present invention is used in a cooling and heating circuit, it is possible to switch the flow path while the compressor is operating. Further, after the switching operation of the main valve body, the main valve body is pressed against the main valve seat by the pressure, and it is not necessary to energize the coil.
【００１４】また、請求項４の発明によれば、主弁体は
ローターを介し板バネにより下方への付勢力を受けてい
るため、切換動作後は、速やかに主弁体を主弁座に押し
付けることが可能であると共に切換後の確実なシール性
が確保される。According to the fourth aspect of the present invention, since the main valve body receives the downward urging force by the leaf spring via the rotor, the main valve body is immediately brought into the main valve seat after the switching operation. Pressing is possible, and reliable sealing after switching is ensured.
【００１５】また、請求項５の発明によれば、ローター
は回転方向に対し鋼球で支持されるため、ローターが回
転し副弁座が開口後、圧力差により主弁体と共に蓋側に
押さえ付けられた状態において、回転抵抗を軽減し、ロ
ーターのスムーズな回動を可能にすると共に、主弁体も
ローター下端の鋼球により圧力差による上方の力を支持
され、スムーズな回動を可能にしている。According to the fifth aspect of the present invention, since the rotor is supported by the steel ball in the rotation direction, the rotor rotates and the sub-valve seat is opened, and then the main valve body and the main valve body are pressed toward the lid by a pressure difference. In the attached state, the rotational resistance is reduced and the rotor can rotate smoothly, and the main valve body is supported by the steel ball at the lower end of the rotor to support the upward force due to the pressure difference, enabling smooth rotation. I have to.
【００１６】また、請求項６の発明によれば、副弁体に
鋼球を用いることで、副弁体は水平方向に移動しながら
副弁座を開口可能であり副弁座が開口する時の力を軽減
させることが可能であり、従ってローターを回転させる
電磁力を小さくすることが可能でコイルの小型化が図れ
る。また副弁座を開閉する時の副弁座の磨耗を防ぎ耐久
性を向上させることが可能であり、さらに鋼球に下向き
の付勢力を与えることで副弁座の確実なシール性が得ら
れる。According to the sixth aspect of the present invention, by using a steel ball for the sub-valve, the sub-valve can open the sub-valve seat while moving in the horizontal direction. Therefore, the electromagnetic force for rotating the rotor can be reduced, and the size of the coil can be reduced. In addition, it is possible to prevent wear of the sub-valve seat when opening and closing the sub-valve seat and improve durability, and furthermore, by applying a downward urging force to the steel ball, a reliable sealing property of the sub-valve seat can be obtained. .
【００１７】[0017]
【発明の実施の形態】図１及び図２は本発明の実施の形
態を示す図で、図１は縦断面図、図２は図１のII−II線
における断面図である。本実施の形態は図１に示すよう
に、磁気回路２０と、弁本体２１とよりなり、該弁本体
２１は弁箱２２と、主弁体２３と、副弁体２４を有する
ローター２５と、該ローターと一体の磁気環２６及び永
久磁石２７とを具備している。1 and 2 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view, and FIG. 2 is a sectional view taken along line II-II of FIG. As shown in FIG. 1, the present embodiment includes a magnetic circuit 20 and a valve body 21. The valve body 21 includes a valve box 22, a main valve body 23, a rotor 25 having a sub-valve body 24, The rotor includes a magnetic ring 26 and a permanent magnet 27 integrated with the rotor.
【００１８】そして、前記弁箱２２は円管状の円筒２８
と、該円筒２８の下部に設けられた主弁座２９と、上部
を封止した蓋３０とよりなり、主弁座２９は図２の如
く、上面が平面をなし、圧縮機Ａの吸込口に接続される
低圧導管３１と、圧縮機Ａの吐出口に接続される高圧導
管３２と、室外熱交換器Ｂ及び室内熱交換器Ｃに接続さ
れる二つの導管３３、３４とが設けられている。The valve box 22 has a circular cylindrical shape 28.
2, a main valve seat 29 provided at a lower portion of the cylinder 28, and a lid 30 sealing the upper portion. The main valve seat 29 has a flat upper surface as shown in FIG. , A high-pressure conduit 32 connected to the discharge port of the compressor A, and two conduits 33 and 34 connected to the outdoor heat exchanger B and the indoor heat exchanger C. I have.
【００１９】また蓋３０にはローター２５の回動を制限
するストッパーとなるピン３５が植設されると共に、受
け板４９を有する板バネ４８が取り付けられけている。
なお、板バネ４８は図７に示すように複数のアーム４８
ａを有し、受け板４９は円輪状をなしている。A pin 35 serving as a stopper for limiting the rotation of the rotor 25 is implanted in the lid 30 and a leaf spring 48 having a receiving plate 49 is attached thereto.
The leaf spring 48 includes a plurality of arms 48 as shown in FIG.
a, and the receiving plate 49 has a ring shape.
【００２０】また、主弁体２３は、前記主弁座２９の上
に接離可能で、且つ回動可能に設けられ、更に、主弁座
２９の前記低圧導管３１と前記二つの導管３３，３４の
一方とを選択連通する連通溝３６と、該連通溝３６の外
側に設けられた空洞３７と、前記連通溝３６から上部に
貫通して穿設された連通孔３８とが設けられている。な
お、該連通孔３８の上部出口は副弁座３９となってい
る。また、主弁体２３の上部は円柱状をなし、そこにね
じりバネ４０を支持している。また該ねじりバネ４０と
係合するバネ受け４１が主弁体２３に設けられている。
なお、弁箱２２の内部は該主弁体２３により上部空間と
下部空間とに仕切られている。The main valve body 23 is provided on the main valve seat 29 so as to be able to contact and separate from the main valve seat 29 and to be rotatable. Further, the low-pressure conduit 31 of the main valve seat 29 and the two conduits 33, A communication groove 36 for selectively communicating with one of the communication grooves 34, a cavity 37 provided outside the communication groove 36, and a communication hole 38 penetrating upward from the communication groove 36. . The upper outlet of the communication hole 38 is a sub-valve seat 39. The upper portion of the main valve body 23 has a cylindrical shape, and supports the torsion spring 40 thereat. A spring receiver 41 that engages with the torsion spring 40 is provided on the main valve body 23.
The inside of the valve box 22 is partitioned into an upper space and a lower space by the main valve body 23.
【００２１】ローター２５は略円筒形をなし、その外周
部に磁束帰還用の円筒形導磁性体の磁気環２６と４極の
永久磁石２７とが一体に設けられ、内周部には副弁体２
４と、該副弁体２４を押圧するコイルバネ４２と、該副
弁体２４及びコイルバネ４２を収容する凹部４３が形成
され、内周上部には２つのストッパ４４，４４′が設け
られている。また内周には前記ねじりバネ４０を受ける
凸部４５が形成されている。The rotor 25 has a substantially cylindrical shape, and a magnetic ring 26 of a cylindrical magnetic conductor for returning magnetic flux and a four-pole permanent magnet 27 are integrally provided on the outer peripheral portion thereof, and a sub-valve is provided on the inner peripheral portion. Body 2
4, a coil spring 42 for pressing the sub-valve element 24, and a concave portion 43 for accommodating the sub-valve element 24 and the coil spring 42 are formed, and two stoppers 44 and 44 'are provided on the upper inner periphery. A convex portion 45 for receiving the torsion spring 40 is formed on the inner periphery.
【００２２】なお、前記ねじりバネ４０は図５（ａ）に
示すように、上下に平行な腕４０ａ，４０ｂを持ち、該
腕４０ａ，４０ｂによりローター２５の内面に設けられ
た凸部４５と主弁体２３に設けられたバネ受け４１とを
挟んでいる。この状態、すなわち、ねじりバネ４０に挟
まれたローター２５の凸部４５と主弁体２３のバネ受け
４１とが中心より外周方向に直線上にある状態の時副弁
体２４は副弁座３９を閉じている。同時にローター２５
のストッパ４４，４４′の片方がピン３５に接してい
る。このとき低圧導管３１と導管３３，３４の一方とが
連通される配置となっている。また、前記副弁体２４を
押圧するコイルバネ４２の付勢力はローター２５を上方
に押し上げないように板バネ４８の付勢力より小さく設
定されている。As shown in FIG. 5A, the torsion spring 40 has arms 40a and 40b which are parallel to each other in the vertical direction. It sandwiches a spring receiver 41 provided on the valve element 23. In this state, that is, when the convex portion 45 of the rotor 25 sandwiched between the torsion springs 40 and the spring receiver 41 of the main valve body 23 are located on a straight line in the outer peripheral direction from the center, the sub-valve body 24 becomes the sub-valve seat 39. Is closed. Rotor 25 at the same time
One of the stoppers 44, 44 'is in contact with the pin 35. At this time, the arrangement is such that the low-pressure conduit 31 and one of the conduits 33 and 34 communicate with each other. The biasing force of the coil spring 42 pressing the sub-valve 24 is set smaller than the biasing force of the leaf spring 48 so as not to push the rotor 25 upward.
【００２３】また、永久磁石２７の上、下部の外周には
鋼球が挿入される複数の溝が形成され、下部の溝には鋼
球４６が挿入され、該鋼球４６は弁箱２２の内周に接し
て主弁体２３を回動可能に支持し、上部の溝には鋼球４
７が挿入され、該鋼球４７が蓋３０に設けられた板バネ
４８に支持された受板４９により上下及び回動可動に支
持されている。そして鋼球４６，４７はローター２５を
介して板バネ４８の下方向への付勢力を主弁体２３に伝
えている。A plurality of grooves into which steel balls are inserted are formed on the outer periphery of the upper and lower parts of the permanent magnet 27, and steel balls 46 are inserted into the lower grooves. The main valve body 23 is rotatably supported in contact with the inner periphery, and a steel ball 4 is provided in an upper groove.
7 is inserted, and the steel ball 47 is vertically and rotationally supported by a receiving plate 49 supported by a leaf spring 48 provided on the lid 30. The steel balls 46 and 47 transmit the downward urging force of the leaf spring 48 to the main valve body 23 via the rotor 25.
【００２４】また、磁気回路２０は、蓋３０の上部に配
置された導磁性体のコア５０と、該コア５０に巻回され
たコイル５１と、該コアの両端に接続した一対のヨーク
５２，５３とよりなり、両ヨーク５２，５３は導磁性体
で形成され、図６（ａ）に示すように永久磁石２７の極
に対向する位置にまで伸ばされ、両ヨーク５２，５３が
９０度ずれるように弁箱２２の外周に接触している。そ
してコイル５１で発生した磁束はコア５０、ヨーク５
２、永久磁石２７の一方の極から磁気環２６を通り永久
磁石２７の他方の極を経てヨーク５３、コア５０に戻る
磁気回路が形成され、コイル５１に通電することにより
永久磁石２７が磁気的な回動力を受けローター２５が回
動するようになっている。The magnetic circuit 20 includes a core 50 of a magnetic conductive material disposed above the lid 30, a coil 51 wound around the core 50, and a pair of yokes 52 connected to both ends of the core. The two yokes 52, 53 are formed of a magnetic conductive material and are extended to a position facing the poles of the permanent magnet 27, as shown in FIG. In contact with the outer periphery of the valve box 22. The magnetic flux generated by the coil 51 is applied to the core 50, the yoke 5
2. A magnetic circuit is formed from one pole of the permanent magnet 27 to the yoke 53 and the core 50 through the magnetic ring 26 and the other pole of the permanent magnet 27. When the coil 51 is energized, the permanent magnet 27 becomes magnetic. The rotor 25 is rotated by receiving a sufficient rotational power.
【００２５】このように構成された本発明の実施の形態
の作用を次に説明する。図１は、コイル５１が非通電の
状態を示し、この状態では図２に示すように圧縮機Ａの
吸込み側に接続される低圧導管３１と室内熱交換器Ｃに
接続される導管３４は連通溝３６により連通され、冷媒
は圧縮機Ａ→高圧導管３２→導管３３→室外熱交換器Ｂ
→膨張弁Ｄ→室内熱交換器Ｃ→導管３４→低圧導管３１
→圧縮機Ａを循環し冷房回路が形成されている。The operation of the embodiment of the present invention configured as described above will be described below. FIG. 1 shows a state in which the coil 51 is de-energized. In this state, the low-pressure conduit 31 connected to the suction side of the compressor A and the conduit 34 connected to the indoor heat exchanger C communicate as shown in FIG. The refrigerant is communicated by the groove 36, and the refrigerant flows from the compressor A to the high-pressure conduit 32 to the conduit 33 to the outdoor heat exchanger B.
→ expansion valve D → indoor heat exchanger C → conduit 34 → low pressure conduit 31
→ A cooling circuit is formed by circulating through the compressor A.
【００２６】そして圧縮機Ａの高圧冷媒は高圧導管３２
より弁本体２１に入り、主弁体２３の上部と連通溝３６
を除いた下部に同圧の圧力が加わっている。またこの状
態では図５（ａ）に示すようにストッパ４４，４４′の
片方４４がストッパピン３５に当接し同時にねじりバネ
４０の上下の腕４０ａ，４０ｂに挟まれた凸部４５とバ
ネ受け４１は一直線状にあり副弁体２４は副弁座３９を
閉じている。The high pressure refrigerant of the compressor A is supplied to the high pressure conduit 32
Into the valve body 21, the upper part of the main valve body 23 and the communication groove 36.
The same pressure is applied to the lower part except for. In this state, as shown in FIG. 5A, one of the stoppers 44, 44 'comes into contact with the stopper pin 35, and at the same time, the convex part 45 and the spring receiver 41 sandwiched between the upper and lower arms 40a, 40b of the torsion spring 40. Are in a straight line, and the sub-valve 24 closes the sub-valve seat 39.
【００２７】ここで図６（ａ）に示すようにヨーク５２
がＮ極、ヨーク５３がＳ極となるようにコイル５１に通
電すると永久磁石２７の各々の磁極は反発、吸引力を受
け時計方向に回動力を受ける。永久磁石２７が回動力を
得ることでローター２５は回動し、図５（ｂ）の如くね
じりバネ４０の腕の片方４０ａをねじり広げると共に図
３及び図５（ｂ）に示すように副弁座３９が開く。この
状態で主弁体２３の上側の高圧冷媒は連通孔３８を通り
低圧の連通溝３６に逃げて、主弁体２３の上下に生じる
圧力差により主弁体２３とローター２５は板バネ４８の
付勢力に抗して蓋３０側に押し付けられる。Here, as shown in FIG.
When the coil 51 is energized so that the N pole becomes the N pole and the yoke 53 becomes the S pole, each of the magnetic poles of the permanent magnet 27 receives repulsion and attractive force and receives clockwise rotation. When the permanent magnet 27 obtains rotational power, the rotor 25 rotates, and as shown in FIG. 5 (b), one of the arms 40a of the torsion spring 40 is torsionally spread, and as shown in FIG. 3 and FIG. The seat 39 opens. In this state, the high-pressure refrigerant on the upper side of the main valve body 23 escapes to the low-pressure communication groove 36 through the communication hole 38, and the main valve body 23 and the rotor 25 It is pressed against the lid 30 against the urging force.
【００２８】すなわち主弁体２３は主弁座２９より離
れ、回動抵抗が減少しねじりバネ４０に係合するバネ受
け４１を介してねじりバネ４０の他方の腕より回動力を
受け、ローター２５と同一方向に回動する。この時ロー
ター２５の上下に配置された鋼球４６，４７は、主弁体
２３の圧力差により働く蓋３０方向への付勢力による主
弁体２３とローター２５の回転方向の摩擦力を軽減さ
せ、小さな力で回動可能にしている。That is, the main valve element 23 is separated from the main valve seat 29, and receives rotational power from the other arm of the torsion spring 40 via a spring receiver 41 which has reduced rotational resistance and engages with the torsion spring 40, and And rotate in the same direction. At this time, the steel balls 46 and 47 disposed above and below the rotor 25 reduce frictional force in the rotational direction of the main valve body 23 and the rotor 25 due to the urging force in the direction of the lid 30 that acts due to the pressure difference of the main valve body 23. , And can be rotated with a small force.
【００２９】さらにローター２５が回動し図５（ｃ）に
示すように、もう一方のストッパ４４′がピン３５に当
接しローター２５が停止し、主弁体２３はねじりバネ４
０の上下の腕が平行な位置、すなわち凸部４５とバネ受
け４１が直線の位置で停止し副弁座３９は副弁体２４で
閉じられ、主弁体２３の上下の圧力差が無くなり板バネ
４８の付勢力により主弁体２３は主弁座２９に押さえつ
けられ作動が完了すると共にコイル５１への通電が止め
られる。Further, as shown in FIG. 5 (c), the rotor 25 rotates and the other stopper 44 'comes into contact with the pin 35 to stop the rotor 25.
The upper and lower arms of the main valve body 23 are stopped at a position where the upper and lower arms are parallel, that is, the convex portion 45 and the spring receiver 41 are linearly closed, the sub-valve seat 39 is closed by the sub-valve member 24, and the pressure difference between the upper and lower sides of the main valve body 23 disappears. The main valve body 23 is pressed against the main valve seat 29 by the urging force of the spring 48, the operation is completed, and the power supply to the coil 51 is stopped.
【００３０】この状態では、図４に示すように連通溝３
６は圧縮機Ａに接続される低圧導管３１と室外熱交換器
Ｂに接続する導管３３を連通し、圧縮機Ａ→高圧導管３
２→導管３４→室内熱交換器Ｃ→膨張弁Ｄ→室該熱交換
器Ｂ→導管３３→低圧導管３１→圧縮機Ａと冷媒が循環
する暖房回路が形成される。In this state, as shown in FIG.
6 communicates a low pressure conduit 31 connected to the compressor A and a conduit 33 connected to the outdoor heat exchanger B, and the compressor A → the high pressure conduit 3
2 → conduit 34 → indoor heat exchanger C → expansion valve D → chamber heat exchanger B → conduit 33 → low pressure conduit 31 → compressor A and a heating circuit for circulating refrigerant.
【００３１】次に、先とは逆に図６（ｂ）に示すように
ヨーク５２がＳ極、ヨーク５３がＮ極となるようにコイ
ル５１に通電すると永久磁石２７の各々の磁極は反発と
吸引力を受け反時計方向に回動し、それによりローター
２５も反時計方向に回動することで先の動作と逆の動作
が行われ冷凍回路は暖房回路より冷房回路に切り変わ
る。Next, contrary to the above, when the coil 51 is energized so that the yoke 52 becomes the S pole and the yoke 53 becomes the N pole as shown in FIG. 6B, each magnetic pole of the permanent magnet 27 repels. Upon receiving the suction force, the rotor 25 rotates counterclockwise, and the rotor 25 also rotates counterclockwise, so that the operation reverse to the previous operation is performed, and the refrigeration circuit is switched from the heating circuit to the cooling circuit.
【００３２】[0032]
【発明の効果】本発明の四方切換弁に依れば、単一の駆
動手段でローターの正逆回転が行え、ローターの回動に
より副弁体を水平方向に移動させることで副弁座の開閉
が容易に行え、副弁座を開くことで主弁体の上下に圧力
差を発生させ主弁体を主弁座より離し回動させることで
高圧力差での回路の切り換えが可能であり、構造が簡単
で小型の切換弁を実現することができる。According to the four-way switching valve of the present invention, the rotor can be rotated forward and backward by a single driving means, and the sub-valve body is moved in the horizontal direction by the rotation of the rotor, whereby the sub-valve seat is moved. Opening and closing can be easily performed, and by opening the sub-valve seat, a pressure difference is generated above and below the main valve body, and by switching the main valve body away from the main valve seat and rotating, it is possible to switch circuits with a high pressure difference. In addition, a small-sized switching valve having a simple structure can be realized.
【００３３】また、冷媒回路の切換動作は圧縮機が運転
した状態でも可能であり、冷凍サイクルの運転効率が高
くなる。また切換動作後は、コイルの通電を止めること
が可能で常時コイルへの通電の必要のない消費エネルギ
ーの少ない切換弁を実現できる。また、ローター、主弁
体ともに板バネによる主弁座側への付勢力が働いており
副弁座が閉じられたときには、速やかに主弁体を主弁座
に押し付け、確実なシール性が得られる。Further, the switching operation of the refrigerant circuit is possible even in a state where the compressor is operated, and the operation efficiency of the refrigeration cycle is increased. Further, after the switching operation, the coil energization can be stopped, and a switching valve with low energy consumption that does not need to energize the coil at all times can be realized. When both the rotor and the main valve are biased to the main valve seat side by leaf springs, and the sub-valve seat is closed, the main valve is quickly pressed against the main valve seat to ensure reliable sealing. Can be
【００３４】また、ローターは回転方向の支持を鋼球で
なされると共に、作動時にローターと主弁体に働く上方
向の力を鋼球で受ける構成であり、回動に必要な回転力
が低減される。従って主弁体に生じる圧力差が大きくと
も小型のコイルでスムーズで確実な回動が可能となる。
さらに、鋼球の副弁体を用いることで、副弁座の開閉時
における副弁座の磨耗が無く高い耐久性が得られると共
に、副弁体に下向きの付勢力を与えることで副弁座の確
実なシール性が得られる。Further, the rotor is supported in the rotating direction by steel balls, and receives an upward force acting on the rotor and the main valve body during operation by the steel balls, so that the rotating force required for rotation is reduced. Is done. Therefore, even if the pressure difference generated in the main valve body is large, smooth and reliable rotation can be achieved with a small coil.
Furthermore, by using the steel valve sub-valve, the sub-valve seat is not worn when opening and closing the sub-valve seat, high durability is obtained, and the sub-valve seat is provided by applying a downward biasing force to the sub-valve seat. Is reliably obtained.
【図１】本発明の実施の形態の四方切換弁を示す縦断面
図である。FIG. 1 is a longitudinal sectional view showing a four-way switching valve according to an embodiment of the present invention.
【図２】図１のII−II線における断面図で、冷房回路を
形成した時の状態である。FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1 and shows a state when a cooling circuit is formed.
【図３】本発明の実施の形態の四方切換弁のローターが
回動した時の状態を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a state when a rotor of the four-way switching valve according to the embodiment of the present invention rotates.
【図４】図３のIV−IV線における断面図で、暖房回路を
形成した時の状態である。4 is a cross-sectional view taken along the line IV-IV in FIG. 3, showing a state when a heating circuit is formed.
【図５】本発明の実施の形態の四方切換弁のねじりバネ
の作用を説明するための図で（ａ）はローターが回動し
ない時の状態、（ｂ）はローターが回動した時の状態、
（ｃ）は主弁体が回動した時の状態をそれぞれ示す図で
ある。5A and 5B are diagrams for explaining the operation of the torsion spring of the four-way switching valve according to the embodiment of the present invention, wherein FIG. 5A shows a state in which the rotor does not rotate, and FIG. 5B shows a state in which the rotor rotates. Status,
(C) is a figure which shows the state at the time of the main valve body rotating, respectively.
【図６】本発明の実施の形態の四方切換弁のヨークと磁
石の配置を示した図で、（ａ）はコイルに通電しない時
の状態、（ｂ）はコイルに通電した時の状態を示した図
である。6A and 6B are diagrams showing the arrangement of the yoke and the magnet of the four-way switching valve according to the embodiment of the present invention, wherein FIG. 6A shows a state when the coil is not energized, and FIG. 6B shows a state when the coil is energized. FIG.
【図７】本発明の実施の形態の四方切換弁の板バネの形
状を示した平面図である。FIG. 7 is a plan view showing a shape of a leaf spring of the four-way switching valve according to the embodiment of the present invention.
【図８】従来の四方切換弁を示す縦断面図である。FIG. 8 is a longitudinal sectional view showing a conventional four-way switching valve.
２０…磁気回路 ２１…弁本体 ２２…弁箱 ２３…主弁体 ２４…副弁体 ２５…ローター ２６…磁気環 ２７…永久磁石 ２８…円筒 ２９…主弁座 ３０…蓋 ３１…低圧導管 ３２…高圧導管 ３３，３４…導管 ３５…ストッパピン ３６…連通溝 ３７…空洞 ３８…連通孔 ３９…副弁座 ４０…ねじりバネ ４１…バネ受け ４２…コイルバネ ４３…凹部 ４４…ストッパ ４５…凸部 ４６，４７…鋼球 ４８…板バネ ４９…受け板 ５０…コア ５１…コイル ５２，５３…ヨーク Ａ…圧縮機 Ｂ…室内熱交換器 Ｃ…室外熱交換器 Ｄ…膨張弁 DESCRIPTION OF SYMBOLS 20 ... Magnetic circuit 21 ... Valve main body 22 ... Valve box 23 ... Main valve body 24 ... Sub-valve body 25 ... Rotor 26 ... Magnetic ring 27 ... Permanent magnet 28 ... Cylindrical 29 ... Main valve seat 30 ... Lid 31 ... Low-pressure conduit 32 ... High-pressure conduits 33,34 ... Conduit 35 ... Stopper pin 36 ... Communication groove 37 ... Cavity 38 ... Communication hole 39 ... Sub valve seat 40 ... Torsion spring 41 ... Spring receiver 42 ... Coil spring 43 ... Recess 44 ... Stopper 45 ... Protrusion 46, 47 ... steel ball 48 ... leaf spring 49 ... receiving plate 50 ... core 51 ... coil 52, 53 ... yoke A ... compressor B ... indoor heat exchanger C ... outdoor heat exchanger D ... expansion valve
Claims (6)
と高圧導管（３２）と二つの導管（３３，３４）を開口
した平面の主弁座（２９）が固着され、上端には１箇所
に下方に伸びたピン（３５）が固着された蓋（３０）が
固着して密封された弁箱（２２）と、 前記弁箱（２２）の内部に、主弁座（２９）側に低圧導
管（３１）と二つの導管（３３，３４）の一方とを選択
連通する連通溝（３６）を有し、且つ、該連通溝（３
６）より上部に開口する副弁座（３９）を有する連通孔
（３８）が設けられて弁箱（２２）の内周で支持され上
下及び回動可能な主弁体（２３）と、 前記主弁体（２３）の上部に位置し外周に４極の永久磁
石（２７）が設けられ、内周下部に副弁座（３９）と接
離する副弁体（２４）が配置され、内周上部に蓋（３
０）のピン（３５）と接離する二つのストッパ（４４，
４４′）が設けられたローター（２５）と、 前記ローター（２５）を回動駆動する磁気回路（２０）
と、 前記ローター（２５）の回動を主弁体（２３）に伝達す
る伝達手段と、を含んで構成されたことを特徴とする四
方切換弁。1. A low-pressure conduit (31) at the lower end of a cylinder (28).
A main valve seat (29) having a flat surface opening the two conduits (33, 34) and the high pressure conduit (32) is fixed, and a pin (35) extending downward at one position is fixed to the upper end of the lid (29). 30) a valve box (22) fixedly sealed therein; inside the valve box (22), one of a low-pressure conduit (31) and two conduits (33, 34) on the main valve seat (29) side. And a communication groove (36) for selectively communicating with the communication groove (3).
6) a main valve body (23), which is provided with a communication hole (38) having a sub-valve seat (39) opening above and is supported by the inner periphery of the valve box (22) and is vertically and rotatable; A four-pole permanent magnet (27) is provided on the outer periphery of the main valve body (23), and a sub-valve body (24) that comes into contact with and separates from the sub-valve seat (39) is provided on the lower part of the inner periphery. Lid (3
0), two stoppers (44,
44 ') provided with a rotor (25); and a magnetic circuit (20) for rotatingly driving the rotor (25).
And a transmitting means for transmitting the rotation of the rotor (25) to the main valve body (23).
０）の上方で、該蓋（３０）に固着され外周にコイル
（５１）が配置された導磁性のコア（５０）と、該コア
（５０）の上下に９０度ずれた状態で固着されて前記永
久磁石（２７）の磁極と対向するようにコの字状で下方
向に舌状に伸ばされた導磁性の２つのヨーク（５２，５
３）とで構成されたことを特徴とする請求項１記載の四
方切換弁。2. The magnetic circuit (20) includes a cover (3).
Above 0), the core (50) is fixed to the lid (30) and has a coil (51) disposed on the outer periphery thereof, and is fixed to the core (50) in a state of being shifted 90 degrees above and below the core (50). Two magnet-conducting yokes (52, 5) extended downward in a U-shape in a U-shape so as to face the magnetic poles of the permanent magnet (27).
3. The four-way switching valve according to claim 1, wherein the four-way switching valve comprises:
中央に配置された平行な腕を上下に持つねじりバネ（４
０）と、ローター（２５）の内周より中心方向に伸び上
下の腕の端部に係合する凸部（４５）と、主弁体（２
３）の上面より上に伸ばされ上下の腕の中央部に挟まれ
るバネ受け（４１）と、で構成されたことを特徴とする
請求項１記載の四方切換弁。3. The torsion spring (4) having upper and lower parallel arms disposed at the center of the upper portion of the main valve body (23).
0), a protrusion (45) extending from the inner periphery of the rotor (25) toward the center and engaging the ends of the upper and lower arms, and a main valve body (2).
The four-way switching valve according to claim 1, further comprising a spring receiver (41) extended above the upper surface of (3) and sandwiched between the central portions of the upper and lower arms.
間で、外周に円輪状の受板（４９）を有し中央より外周
に向かう複数の腕で形成された板バネ（４８）が蓋（３
０）の中央に固着され、主弁体（２３）にローター（２
５）を介し主弁座（２９）方向に付勢力を与えているこ
とを特徴とする請求項１記載の四方切換弁。4. A leaf spring (48) formed between the rotor (25) and the lid (30), having a ring-shaped receiving plate (49) on the outer periphery and formed by a plurality of arms from the center to the outer periphery. Is the lid (3
0) and fixed to the main valve body (23) with the rotor (2).
2. The four-way switching valve according to claim 1, wherein a biasing force is applied in the direction of the main valve seat (29) via (5).
けた複数の溝と該溝内に弁箱（２２）内周と受板（４
９）に接する鋼球（４７）が格納されると共にローター
（２５）の下端外周に設けた複数の溝と該溝内に弁箱
（２２）内周と主弁座（２９）の上面に接する鋼球（４
６）が格納され、該上下の鋼球（４６，４７）によりロ
ーター（２５）の回動方向と、上下の摺動方向の支持が
なされることを特徴とする請求項１記載の四方切換弁。5. A plurality of grooves provided on an outer periphery of an upper end of the rotor (25), and an inner periphery of a valve box (22) and a receiving plate (4) in the grooves.
The steel ball (47) in contact with 9) is stored, and a plurality of grooves provided on the outer periphery of the lower end of the rotor (25), and the grooves contact the inner periphery of the valve box (22) and the upper surface of the main valve seat (29). Steel ball (4
6. The four-way switching valve according to claim 1, wherein the upper and lower steel balls (46, 47) support the rotating direction of the rotor (25) and the vertical sliding direction. .
ター（２５）内周の１か所に下方向に開口した凹部（４
３）に上下に摺動可能に配置され、さらに副弁体（２
４）の上に配置されたコイルバネ（４２）で主弁体（２
３）側に付勢力を与えられると共に、板バネ（４８）の
付勢力はコイルバネ（４２）の付勢力より大きく設定さ
れ、ねじりバネ（４０）に挟まれたローター（２５）の
凸部（４５）と主弁体（２３）のバネ受け（４１）が中
心より外周方向に直線上にある状態で副弁座（３９）を
閉じていることを特徴とする請求項１記載の四方切換
弁。6. The sub-valve (24) is a steel ball, and has a recess (4) opened downward at one location on the inner periphery of the rotor (25).
3) is disposed so as to be slidable up and down.
4) A coil spring (42) arranged above the main valve body (2).
3) The urging force is applied to the side, and the urging force of the leaf spring (48) is set to be larger than the urging force of the coil spring (42), and the protrusion (45) of the rotor (25) sandwiched between the torsion springs (40). 2. The four-way switching valve according to claim 1, wherein the sub-valve seat (39) is closed in a state in which the spring receiver (41) of the main valve body (23) and the spring receiver (41) are on a straight line in the outer peripheral direction from the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000006105A JP2001193855A (en) | 2000-01-11 | 2000-01-11 | Four-way selector valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000006105A JP2001193855A (en) | 2000-01-11 | 2000-01-11 | Four-way selector valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001193855A true JP2001193855A (en) | 2001-07-17 |
Family
ID=18534689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000006105A Pending JP2001193855A (en) | 2000-01-11 | 2000-01-11 | Four-way selector valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001193855A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138173A1 (en) * | 2007-05-14 | 2008-11-20 | Jianhua Jiang | A megnetically controlled four-way reversing valve |
| KR100934632B1 (en) * | 2007-11-08 | 2009-12-31 | (주) 엠앤유 | Electric switching valve |
| KR20160079426A (en) * | 2014-12-26 | 2016-07-06 | 장명수 | Flat-type spool of the operating device which is driven by a hydraulic pressure |
| JP2021124119A (en) * | 2020-01-31 | 2021-08-30 | 株式会社鷺宮製作所 | Rotary switching valve |
-
2000
- 2000-01-11 JP JP2000006105A patent/JP2001193855A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008138173A1 (en) * | 2007-05-14 | 2008-11-20 | Jianhua Jiang | A megnetically controlled four-way reversing valve |
| KR100934632B1 (en) * | 2007-11-08 | 2009-12-31 | (주) 엠앤유 | Electric switching valve |
| KR20160079426A (en) * | 2014-12-26 | 2016-07-06 | 장명수 | Flat-type spool of the operating device which is driven by a hydraulic pressure |
| KR101686126B1 (en) | 2014-12-26 | 2016-12-13 | 장명수 | Flat-type spool of the operating device which is driven by a hydraulic pressure |
| JP2021124119A (en) * | 2020-01-31 | 2021-08-30 | 株式会社鷺宮製作所 | Rotary switching valve |
| JP7227931B2 (en) | 2020-01-31 | 2023-02-22 | 株式会社鷺宮製作所 | Rotary switching valve |
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