JP2003314715A - Four-way change-over valve - Google Patents
Four-way change-over valveInfo
- Publication number
- JP2003314715A JP2003314715A JP2002117662A JP2002117662A JP2003314715A JP 2003314715 A JP2003314715 A JP 2003314715A JP 2002117662 A JP2002117662 A JP 2002117662A JP 2002117662 A JP2002117662 A JP 2002117662A JP 2003314715 A JP2003314715 A JP 2003314715A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hole
- pressure
- communication
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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)
- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、四方切換弁に係
り、特に、主弁の切換動作時に主弁を弁座から浮上させ
て主弁の切換動作を容易に行わせることができる四方切
換弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a four-way switching valve, and more particularly, to a four-way switching valve that allows the main valve to float above a valve seat during the switching operation of the main valve to facilitate the switching operation of the main valve. Regarding
【０００２】一般に、ルームエアコン等として用いられ
る空気調和機は、冷媒の流れる方向を切換えて冷房運転
又は暖房運転を行うことができ、この冷媒の流れ方向の
切換えは切換弁によって行っている。図１１は、切換弁
を用いた空気調和機の冷暖房サイクルの一例を示したも
のである。該冷暖房サイクルは、圧縮機Ｃと、切換弁Ｓ
Ｖと、熱交換器（凝縮器）Ｅ１，熱交換器（蒸発器）Ｅ
２と、電子リニア制御弁Ｔとが接続され、冷房運転時の
冷媒は、実線矢印で示すように、圧縮機Ｃ、切換弁Ｓ
Ｖ、室外熱交換器Ｅ１、電子リニア制御弁Ｔ、室内熱交
換器Ｅ２の順に流れ、切換弁ＳＶを経て、再び圧縮機Ｃ
に戻って循環する。暖房運転時の冷媒は、一点鎖線矢印
で示すように、圧縮機Ｃ、切換弁ＳＶ、室内熱交換器Ｅ
２、電子リニア制御弁Ｔ、室外熱交換器Ｅ１の順に流
れ、切換弁ＳＶを経て、再び圧縮機Ｃに戻って循環す
る。Generally, an air conditioner used as a room air conditioner or the like can perform a cooling operation or a heating operation by switching the flowing direction of the refrigerant, and the switching direction of the refrigerant is switched by a switching valve. FIG. 11 shows an example of a cooling / heating cycle of an air conditioner using a switching valve. The heating / cooling cycle includes a compressor C and a switching valve S.
V, heat exchanger (condenser) E1, heat exchanger (evaporator) E
2 and the electronic linear control valve T are connected, and the refrigerant during the cooling operation is the compressor C and the switching valve S as shown by the solid arrow.
V, the outdoor heat exchanger E1, the electronic linear control valve T, and the indoor heat exchanger E2 flow in this order, the switching valve SV, and the compressor C again.
Circulate back to. The refrigerant during the heating operation is, as indicated by the one-dot chain line arrow, the compressor C, the switching valve SV, the indoor heat exchanger E.
2. The electronic linear control valve T and the outdoor heat exchanger E1 flow in this order, the switching valve SV, and then the compressor C again for circulation.
【０００３】前記切換弁の一例として、四方切換弁の技
術が種々提案されている。例えば、実用新案登録第２５
２３０３１号公報記載の四方切換弁の技術は、弁本体内
において吐出圧力導通孔及び導通孔、吸入圧力導通孔及
び導通孔における相互間の冷媒流路の切換えを主弁の内
側と外側とで行っている。As an example of the switching valve, various four-way switching valve technologies have been proposed. For example, utility model registration No. 25
In the technology of the four-way switching valve described in JP-A-23031, switching of the refrigerant flow path between the discharge pressure communication hole and the communication hole, the suction pressure communication hole and the communication hole in the valve body is performed inside and outside the main valve. ing.
【０００４】しかし、この技術においては、主弁の内側
では低圧の吸入圧力が生じ、主弁の外側では高圧の吐出
圧力が生じるので、主弁を挟んで圧力差が発生すること
から切換え動作が重くなる傾向があり、この点で、この
四方切換弁は冷媒流路の切換え動作の容易性・敏捷性に
ついては特に考慮がなされていない。また、特公平１−
３２３８９号公報記載の四方切換弁の技術は、弁本体の
圧力差をなくした後に、主弁による冷媒通路の切換え動
作が行われるものであるが、弾性部材の伸縮によって主
弁の回動を行っているので、冷媒流路の切換え動作の敏
捷性、及び四方切換弁の信頼性については格別の配慮が
なされていない。However, in this technique, a low-pressure suction pressure is generated inside the main valve and a high-pressure discharge pressure is generated outside the main valve. Therefore, a pressure difference occurs across the main valve, so that the switching operation is performed. In this respect, the four-way switching valve does not take into consideration the ease and agility of the switching operation of the refrigerant passage. In addition,
According to the technique of the four-way switching valve described in Japanese Patent No. 32389, switching operation of the refrigerant passage by the main valve is performed after eliminating the pressure difference in the valve body, but the main valve is rotated by expansion and contraction of the elastic member. Therefore, no particular consideration is given to the agility of the switching operation of the refrigerant flow path and the reliability of the four-way switching valve.
【０００５】[0005]
【発明が解決しようとする課題】そこで、本出願人は、
上記問題を解決するために、先に特願２０００−３３０
３７７号、特願２００１−１４７２６５号として、冷媒
流路の切換え動作の円滑性の向上を課題とした四方切換
弁を提供している。本発明は、更にこれを改良したもの
で、その課題とするところは、冷媒流路の切換え動作の
円滑性及び敏捷性の一層の向上を図るとともに、切換弁
としての信頼性を一層向上させることができる四方切換
弁を提供することにある。Therefore, the applicant of the present invention is
In order to solve the above problems, Japanese Patent Application No. 2000-330 is first mentioned.
Japanese Patent Application No. 377 and Japanese Patent Application No. 2001-147265 provide a four-way switching valve whose object is to improve the smoothness of the switching operation of the refrigerant passages. The present invention is a further improvement of the present invention, and its object is to further improve the smoothness and agility of the switching operation of the refrigerant flow passages, and further improve the reliability as a switching valve. It is to provide a four-way switching valve capable of
【０００６】[0006]
【課題を解決するための手段】前記課題を達成すべく本
発明に係る電動弁は、下記の手段からなるものである。
請求項１記載の四方切換弁は、ステータとロータからな
るモータ部と、ケースと該ケース内の弁室に配置された
主弁と弁座とからなる本体部と、を備えた四方切換弁に
おいて、弁座は、圧縮機の吸入圧力側と吐出圧力側とに
それぞれ連通する吸入圧力導通孔と吐出圧力導通孔とを
備え、且つ、室内及び室外の各熱交換器にそれぞれ連通
する二つの導通孔とを備え、主弁は、前記吸入圧力導通
孔と前記二つの導通孔に選択的に連通する低圧連通凹部
と、前記吐出圧力導通孔と前記二つの導通孔に選択的に
連通する高圧連通凹部とを備え、更に、前記低圧連通凹
と前記弁室とを連通する均圧孔と、前記高圧連通凹部と
前記弁室とを連通する連通孔とを備えるとともに、主弁
上には、ロータの回転に連動する閉止弁支持体を設け、
該閉止弁支持体には、第１閉止弁と第２閉止弁とを具備
させ、該第１閉止弁と第２閉止弁とにより、均圧孔と連
通孔とを選択的に開閉可能とすると共に、連通孔が閉で
且つ均圧孔が開状態において、主弁を流路切換えのため
に移動させることを特徴とする。In order to achieve the above object, the motor-operated valve according to the present invention comprises the following means.
The four-way switching valve according to claim 1 is a four-way switching valve including a motor unit including a stator and a rotor, a main body unit including a case, a main valve disposed in a valve chamber in the case, and a valve seat. The valve seat includes a suction pressure communication hole and a discharge pressure communication hole that communicate with the suction pressure side and the discharge pressure side of the compressor, respectively, and two conductions that communicate with the indoor and outdoor heat exchangers, respectively. The main valve includes a hole, and the main valve has a low-pressure communication recess that selectively communicates with the suction pressure communication hole and the two communication holes, and a high-pressure communication that selectively communicates with the discharge pressure communication hole and the two communication holes. The main valve includes a recess, a pressure equalizing hole that communicates the low-pressure communication recess and the valve chamber, and a communication hole that communicates the high-pressure communication recess and the valve chamber. Provided with a stop valve support that is linked to the rotation of
The closing valve support is provided with a first closing valve and a second closing valve, and the first closing valve and the second closing valve can selectively open and close the pressure equalizing hole and the communication hole. At the same time, the main valve is moved to switch the flow paths when the communication hole is closed and the pressure equalizing hole is open.
【０００７】請求項２記載の四方切換弁は、請求項１記
載の手段に加えて、主弁は、上記の移動時において弁座
上面から離れた状態となることを特徴とする。請求項３
記載の四方切換弁は、請求項１又は２記載の手段に加え
て、閉止弁支持体の回転手段として、ロータと一体に回
転する駆動歯部と閉止弁支持体側に設けた受動歯部とか
ら駆動部を形成し、該駆動部はトルク増幅可能に形成す
ることを特徴とする。The four-way switching valve according to a second aspect is characterized in that, in addition to the means according to the first aspect, the main valve is separated from the upper surface of the valve seat during the above movement. Claim 3
In addition to the means according to claim 1 or 2, the four-way switching valve described includes, as a means for rotating the closing valve support, a drive tooth part that rotates integrally with the rotor and a passive tooth part provided on the closing valve support side. A drive unit is formed, and the drive unit is formed so that torque can be amplified.
【０００８】請求項４記載の四方切換弁は、請求項１〜
３記載のいずれかの手段に加えて、第１閉止弁と第２閉
止弁とは、主弁側に弾圧状態で閉止弁支持体に支持させ
ることを特徴とする。A four-way switching valve according to a fourth aspect of the present invention is a four-way switching valve.
In addition to any of the means described in 3, the first closing valve and the second closing valve are characterized in that they are supported by a closing valve support body in a resilient pressure state on the main valve side.
【０００９】[0009]
【発明の実施の形態】以下、図面により本発明の四方切
換弁１００の実施形態について説明する。図１は本発明
の実施形態における四方切換弁の外観斜視図、図２
（Ａ）は図１の縦断面図、図２（Ｂ）は図２（Ａ）のＡ
−Ａ断面図、図３は同四方切換弁の本体部の斜視図、図
４は同四方切換弁の主弁の底面図である。なお、以下の
説明において、「上下左右」の意味は、図面の記載にお
ける上下左右であり、実際に使用状態においては、必ず
しも上下左右になるとは限らない。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a four-way switching valve 100 of the present invention will be described below with reference to the drawings. 1 is an external perspective view of a four-way switching valve according to an embodiment of the present invention, FIG.
1A is a vertical cross-sectional view of FIG. 1, and FIG. 2B is A of FIG.
-A sectional drawing, FIG. 3 is a perspective view of the main-body part of the same four-way switching valve, and FIG. 4 is a bottom view of the main valve of the same four-way switching valve. In the following description, the meaning of “upper, lower, left, right” means “upper, lower, left, right” in the drawings, and does not necessarily mean “upper, lower, left, right” in actual use.
【００１０】図示の実施形態の四方切換弁１００は、ス
テッピングモータを備えたモータ部１０と、主弁７０を
備えた本体部５０とからなり、主弁７０を前記モータ部
１０への通電に伴って弁座８０上で回動させ、冷媒流路
の切換えを行わせる。モータ部１０は、ステータ２０と
ロータ４０とを具備し、ステータ２０は上下に格納され
たステータコイル２１及びヨーク２２を備え、ステ一タ
コイル２１はリード線が束ねられたケーブル２３を備
え、ステータ２０の外周にはコネクタ２４が接続されて
いる。The four-way switching valve 100 of the illustrated embodiment comprises a motor section 10 having a stepping motor and a main body section 50 having a main valve 70. The main valve 70 is energized by the motor section 10. The valve is rotated on the valve seat 80 to switch the refrigerant flow path. The motor unit 10 includes a stator 20 and a rotor 40. The stator 20 includes a stator coil 21 and a yoke 22 that are vertically stored, and the stator coil 21 includes a cable 23 in which lead wires are bundled. A connector 24 is connected to the outer periphery of the.
【００１１】本体部５０は、ケース３０と、ケース３０
の下端部に気密状に連結固定された本体ケース５１と、
主弁７０と、主弁７０上に配置される閉止弁支持体６０
と、弁座８０と、導管群９０と、から構成される。ケー
ス３０にはモータ部１０が外嵌されるとともに、ロータ
４０等が内嵌される。The main body 50 includes a case 30 and a case 30.
A main body case 51 that is airtightly connected and fixed to the lower end of the
Main valve 70 and stop valve support 60 disposed on main valve 70
A valve seat 80 and a conduit group 90. The motor portion 10 is fitted onto the case 30, and the rotor 40 and the like are fitted inside.
【００１２】ロータ４０は支持軸４２に挿設され、その
外周には磁石を具備している。また、ロータ４０下部に
は連結リング枠４１を介して駆動部４７が一体的に固定
されている。駆動部４７の下部外周には所定高さにわた
って駆動歯部４８が形成されている。The rotor 40 is inserted into a support shaft 42 and has a magnet on its outer circumference. Further, a drive unit 47 is integrally fixed to the lower portion of the rotor 40 via a connecting ring frame 41. A drive tooth portion 48 is formed on the outer periphery of the lower portion of the drive portion 47 over a predetermined height.
【００１３】支持軸４２は、その下部が主弁７０の支持
軸孔７１に回転可能に支持されており、また、主弁７０
側と支持軸４２側との間に取り付けられた押しばね４６
により弾性的に上方に支持されている。また、支持軸４
２の上端部はケース３０に回転可能に支持されている。The lower part of the support shaft 42 is rotatably supported in the support shaft hole 71 of the main valve 70, and the main valve 70 is also supported.
Side 46 and the support shaft 42 side, the push spring 46 attached between
Is elastically supported above. Also, the support shaft 4
The upper end of 2 is rotatably supported by the case 30.
【００１４】ケース３０の下部には、一体接合された本
体ケース５１が形成され、該本体ケース５１の下部に
は、ステンレス等からなる弁座８０が内嵌され、本体ケ
ース５１と弁座８０とが一体に固定される。弁座８０は
弁室７３の底部を構成しており、本体ケース５１の下端
に接合部８１により連結され、圧縮機の吸入圧力を導入
する吸入圧力導通孔８２、吐出圧力を導入する吐出圧力
導通孔８３、室外及び室内の熱交換器に連通される室外
熱交換器用の導通孔８４、及び、室内熱交換器用の導通
孔８５が設けられ、これらの孔８２〜８５は上下に貫通
して形成されている。An integrally joined main body case 51 is formed in the lower portion of the case 30, and a valve seat 80 made of stainless steel or the like is fitted in the lower portion of the main body case 51 to connect the main body case 51 and the valve seat 80. Are fixed together. The valve seat 80 constitutes the bottom of the valve chamber 73, is connected to the lower end of the main body case 51 by a joint 81, and has a suction pressure conduction hole 82 for introducing the suction pressure of the compressor and a discharge pressure conduction for introducing the discharge pressure. A hole 83, an outdoor heat exchanger communication hole 84 communicating with the outdoor and indoor heat exchangers, and an indoor heat exchanger communication hole 85 are provided, and these holes 82 to 85 are formed so as to penetrate vertically. Has been done.
【００１５】また、それぞれの孔８２〜８５の下面に、
導管群９０として、銅合金等からなる吸入圧力導通管９
２、吐出圧力導通管９３、室外熱交換器用の導通管９
４、及び、室内交換機用の導通管９５が連結されてい
る。なお、吐出圧力導通管９３の上端部は弁座８０の上
面より上方に、即ち高圧連通凹部７４内に突出してお
り、主弁７０の動きに対するストッパの機能を有してい
る。弁座８０の上面は平面状をなし、その上面で主弁７
０の下端面と接している。On the lower surface of each of the holes 82 to 85,
As the conduit group 90, a suction pressure conduit 9 made of copper alloy or the like
2, discharge pressure conduit 93, conduit 9 for outdoor heat exchanger
4 and a conduit tube 95 for the indoor switchboard are connected. The upper end of the discharge pressure conducting pipe 93 projects above the upper surface of the valve seat 80, that is, into the high pressure communication recess 74, and has a function of a stopper against the movement of the main valve 70. The upper surface of the valve seat 80 has a flat shape, and the main valve 7 is
It is in contact with the lower end surface of 0.
【００１６】導通孔８２〜８５について更に詳しく説明
すると、図２（Ａ）（Ｂ）に示すように、吸入圧力導通
孔８２及び吐出圧力導通孔８３は、弁座８０の中心部に
対して対称位置に設けられているとともに、室外熱交換
器用の導通孔８４及び室内熱交換器用の導通孔８５は、
前記弁座８０の中心部に対して対称位置で吸入圧力導通
孔８２と吐出圧力導通孔８３とから所定角度離してそれ
ぞれ設けられている。The communicating holes 82 to 85 will be described in more detail. As shown in FIGS. 2A and 2B, the suction pressure communicating hole 82 and the discharge pressure communicating hole 83 are symmetrical with respect to the center of the valve seat 80. The conduction hole 84 for the outdoor heat exchanger and the conduction hole 85 for the indoor heat exchanger are provided at the position,
They are provided at symmetrical positions with respect to the central portion of the valve seat 80, separated from the suction pressure conducting hole 82 and the discharge pressure conducting hole 83 by a predetermined angle.
【００１７】導管群９０は、前記吸入圧力導通孔８２に
接続される吸入圧力導通管９２と、前記吐出圧力導通孔
８３に接続される吐出圧力導通管９３と、前記導通孔８
４に接続される室外熱交換器用の導通管９４と、前記導
通孔８５に接続される室内交換機用の導通管９５の四本
からなり、前記弁座８０の下部にそれぞれ接続・固定さ
れる。The conduit group 90 includes a suction pressure conducting pipe 92 connected to the suction pressure conducting hole 82, a discharge pressure conducting pipe 93 connected to the discharge pressure conducting hole 83, and the conducting hole 8.
4 is composed of a conduit pipe 94 for the outdoor heat exchanger connected to the No. 4 and a conduit pipe 95 for the indoor exchanger connected to the conduit hole 85, which are respectively connected and fixed to the lower portion of the valve seat 80.
【００１８】主弁７０は、例えば合成樹脂を素材として
形成され、ケース３０内の弁室７３に収容され、弁座８
０の上面で支持軸４２に軸支されて回転・摺動可能に載
置されている。主弁７０は、図２〜４に示すように、平
面視円形で、所定高さを有し、その中心部の中央凹部７
２には支持軸孔７１が穿設され、下面には円周方向に沿
って湾曲し所定深さを有する高圧連通凹部７４と低圧連
通凹部７５とが形成される。The main valve 70 is made of, for example, synthetic resin, is housed in a valve chamber 73 inside the case 30, and has a valve seat 8
The upper surface of 0 is rotatably and slidably mounted on the support shaft 42 so as to be pivotally supported. As shown in FIGS. 2 to 4, the main valve 70 has a circular shape in plan view, has a predetermined height, and has a central recessed portion 7 at the center thereof.
2, a support shaft hole 71 is bored, and a lower surface has a high-pressure communication recess 74 and a low-pressure communication recess 75 which are curved along the circumferential direction and have a predetermined depth.
【００１９】そして、高圧連通凹部７４には、上方の弁
室７３に連通する連通孔７６が穿設され、低圧連通凹部
７５には、上方の弁室７３に連通する均圧孔７７が穿設
される。本実施例では、上記均圧孔７７の孔径は連通孔
７６の孔径よりも大としている。また、上記主弁７０の
上面には、閉止弁支持体６０を軸支する軸ピン７８が立
設されるとともにその近傍には、後述の凹孔６０ｂに遊
嵌させる連動突部７９が立設されている。A communication hole 76 communicating with the upper valve chamber 73 is formed in the high pressure communication recess 74, and a pressure equalizing hole 77 communicating with the upper valve chamber 73 is formed in the low pressure communication recess 75. To be done. In this embodiment, the pressure equalizing hole 77 has a diameter larger than that of the communication hole 76. Further, a shaft pin 78 that pivotally supports the shutoff valve support body 60 is erected on the upper surface of the main valve 70, and an interlocking protrusion 79 that is loosely fitted in a later-described recessed hole 60b is erected in the vicinity thereof. Has been done.
【００２０】前記主弁７０の上面には閉止弁支持体６０
が配置されている。閉止弁支持体６０は、特に図２，３
に示されるように、円柱状に形成され、その側面には所
定角度にわたって受動歯部６５が形成され、該受動歯部
６５は駆動歯部４８と噛み合うように配置される。On the upper surface of the main valve 70, a shutoff valve support 60 is provided.
Are arranged. The shut-off valve support 60 is particularly shown in FIGS.
As shown in FIG. 2, the passive tooth portion 65 is formed in a columnar shape over a predetermined angle on its side surface, and the passive tooth portion 65 is arranged so as to mesh with the drive tooth portion 48.
【００２１】上記閉止弁支持体６０の中心には、回転軸
孔（符号なし）が形成されるとともに、その周部には前
記受動歯部６５に近接して所定幅を有する凹孔６０ｂが
上下に貫通状態で形成されている。閉止弁支持体６０は
軸ピン７８に回転自在に軸支される。また、前記のよう
に、凹孔６０ｂには連動突部７９が遊嵌され、閉止弁支
持体６０が主弁７０に対して所定角度だけ回転可能に構
成されている。上記閉止弁支持体６０の二箇所に設けら
れた孔には、上下に摺動可能な第１閉止弁６３及び第２
閉止弁６４が嵌挿され、両閉止弁６３，６４はそれぞれ
閉止弁ばね６６及び閉止弁ばね６７により下方に押圧さ
れるように装着されている。そして、閉止弁支持体６０
は、主弁７０に対して凹孔６０ｂにより所定範囲の角度
で回動可能に形成され、閉止弁支持体６０の前記回転に
より、第１閉止弁６３は連通孔７６又は均圧孔７７を選
択的に開閉するように配置され、第２閉止弁６４は閉止
弁支持体６０の回転により、連通孔７６を開閉するよう
に配置される。換言すれば、主弁７０に対する閉止弁支
持体６０の回転により、連通孔７６または均圧孔７７が
選択的に開閉されることになる。A rotary shaft hole (no reference numeral) is formed at the center of the shutoff valve support 60, and a recessed hole 60b having a predetermined width is formed on the periphery of the rotary shaft hole in the vicinity of the passive tooth portion 65. Is formed in a penetrating state. The stop valve support body 60 is rotatably supported by a shaft pin 78. In addition, as described above, the interlocking protrusion 79 is loosely fitted in the recess 60b, and the closing valve support 60 is configured to be rotatable by a predetermined angle with respect to the main valve 70. The first stop valve 63 and the second stop valve slidable up and down are provided in the holes provided at two positions of the stop valve support body 60.
The stop valve 64 is fitted and inserted, and the stop valves 63 and 64 are mounted so as to be pressed downward by the stop valve spring 66 and the stop valve spring 67, respectively. And the stop valve support 60
Is formed so as to be rotatable with respect to the main valve 70 by a concave hole 60b at an angle within a predetermined range, and the first closing valve 63 selects the communication hole 76 or the pressure equalizing hole 77 by the rotation of the closing valve support body 60. The second closing valve 64 is arranged so as to open and close the communication hole 76 by the rotation of the closing valve support body 60. In other words, the rotation of the closing valve support member 60 with respect to the main valve 70 selectively opens or closes the communication hole 76 or the pressure equalizing hole 77.
【００２２】次に、四方切換弁１００の具体的な作動に
ついて説明する。図５は、同四方切換弁の冷房状態を示
す説明図（Ａ），（Ｂ）、図６は、同冷房状態から暖房
への切換動作１を示す説明図（Ａ），（Ｂ）、図７は、
同冷房状態から暖房への切換動作２を示す説明図
（Ａ），（Ｂ）である。図８は、同四方切換弁の暖房状
態を示す説明図（Ａ），（Ｂ）、図９は、同暖房状態か
ら冷房への切換動作１を示す説明図（Ａ），（Ｂ）、図
１０は同暖房状態から冷房への切換動作２を示す説明図
（Ａ），（Ｂ）、図１１は、冷暖房運転時のサイクル構
成図である。Next, the specific operation of the four-way switching valve 100 will be described. FIG. 5: is explanatory drawing (A), (B) which shows the cooling state of the same four-way switching valve, and FIG. 6 is explanatory drawing (A), (B), the figure which shows the switching operation 1 from the same cooling state to heating. 7 is
It is explanatory drawing (A), (B) which shows the switching operation 2 from the same cooling state to heating. FIG. 8: is explanatory drawing (A), (B) which shows the heating state of the same four-way switching valve, FIG. 9: explanatory drawing (A), (B), the figure which shows the switching operation 1 from the heating state to cooling. 10 is an explanatory view (A) and (B) showing the switching operation 2 from the same heating state to cooling, and FIG. 11 is a cycle configuration diagram during the heating and cooling operation.
【００２３】四方切換弁１００を用いて冷媒流路の切換
（冷暖房の切換）を行うには、切換スイッチ（図示せ
ず）によりケーブル２３及びコネクタ２４を通じてステ
ータコイル２１に通電して励磁させることによりモータ
部１０を駆動させ、ロータ４０を回転させ、該ロータ４
０の回転を介して支持軸４２を回転させる。そして、支
持軸４２と一体の駆動部４７を介して、閉止弁支持体６
０を主弁７０上で回動（自転）させる。この閉止弁支持
体６０の回転により、前記連通孔７６又は均圧孔７７を
開閉させると共に、更なる支持軸４２の回転により、閉
止弁支持体６０と一体状態の主弁７０を支持軸４２中心
に弁座８０上で回動させ（主弁７０は自転、閉止弁支持
体６０は公転）、後述するように冷媒流れの切換えを行
う。In order to switch the refrigerant flow path (switch between cooling and heating) using the four-way switching valve 100, the stator coil 21 is energized and excited by the switching switch (not shown) through the cable 23 and the connector 24. The motor unit 10 is driven to rotate the rotor 40,
The support shaft 42 is rotated through the rotation of 0. Then, the stop valve support body 6 is driven through the drive unit 47 integrated with the support shaft 42.
0 is rotated (rotated) on the main valve 70. The rotation of the stop valve support body 60 opens and closes the communication hole 76 or the pressure equalizing hole 77, and the further rotation of the support shaft 42 causes the main valve 70 integrated with the stop valve support body 60 to move to the center of the support shaft 42. Then, the valve is rotated on the valve seat 80 (the main valve 70 rotates and the closing valve support 60 revolves) to switch the flow of the refrigerant as described later.
【００２４】（冷房から暖房への切換）次に、具体的な
冷暖房の切換について、図５〜８を用いて説明する。先
ず、冷房から暖房への切換について説明する。
（冷房状態・図５）図５は、冷房から暖房への切換前の
状態（冷房状態）を示しており、主弁７０に対する閉止
弁支持体６０の位置により、均圧孔７７は第１閉止弁６
３により「閉」、連通孔７６は「開」となっている。こ
の状態において、主弁７０の高圧連通凹部７４を介し
て、圧縮機Ｃからの吐出圧力導通孔８３と室外熱交換器
Ｅ１への導通孔８４とは連通している。また、主弁７０
の低圧連通凹部７５を介して、圧縮機Ｃへの吸入圧力導
通孔８２と、室内熱交換器Ｅ２からの導通孔８５は連通
している（図１１の実線矢印参照）。また、連動突部７
９は凹孔６０ｂの中央位置にあり、高圧連通凹部７４の
一側端は吐出圧力導通管９３の上端部に当接している。(Switching from Cooling to Heating) Next, specific switching of cooling and heating will be described with reference to FIGS. First, switching from cooling to heating will be described. (Cooling state-FIG. 5) FIG. 5 shows a state before switching from cooling to heating (cooling state). Depending on the position of the closing valve support body 60 with respect to the main valve 70, the pressure equalizing hole 77 is first closed. Valve 6
3, the communication hole 76 is "closed" and the communication hole 76 is "open". In this state, the discharge pressure communication hole 83 from the compressor C and the communication hole 84 to the outdoor heat exchanger E1 communicate with each other through the high pressure communication recess 74 of the main valve 70. Also, the main valve 70
The suction pressure communicating hole 82 to the compressor C and the communicating hole 85 from the indoor heat exchanger E2 communicate with each other through the low pressure communicating recess 75 (see solid arrow in FIG. 11). Also, the interlocking protrusion 7
9 is at the center position of the recessed hole 60b, and one end of the high-pressure communication recess 74 is in contact with the upper end of the discharge pressure conducting pipe 93.
【００２５】この状態において、四方切換弁１００で
は、連通孔７６の「開」により、高圧連通凹部７４と弁
室７３とは連通し、弁室７３内の冷媒圧は高圧連通凹部
７４内の冷媒圧と略同一となっている。一方、低圧側の
低圧連通凹部７５は、第２閉止弁６４により「閉」とな
っているから低圧状態である。その結果、閉止弁支持体
６０は弁室７３からの高い冷媒圧により、主弁７０側に
押圧され、主弁７０と閉止弁支持体６０とは高い気密性
が保たれており、円滑な冷媒の移動が実現している。In this state, in the four-way switching valve 100, the high pressure communication recess 74 communicates with the valve chamber 73 by "opening" the communication hole 76, and the refrigerant pressure in the valve chamber 73 becomes the refrigerant in the high pressure communication recess 74. It is almost the same as the pressure. On the other hand, the low-pressure communication recess 75 on the low-pressure side is in a low-pressure state because it is “closed” by the second closing valve 64. As a result, the shutoff valve support body 60 is pressed toward the main valve 70 side by the high refrigerant pressure from the valve chamber 73, and the main valve 70 and the shutoff valve support body 60 are kept highly airtight, and the smooth refrigerant is provided. Has been realized.
【００２６】（切換動作・図６）図５における冷房状態
から暖房に切り換えるに当たっては、モータ部１０のス
イッチをオンする。このオンにより、ロータ４０が回転
し、駆動部４７の所定角度の回転により、駆動歯部４８
と受動歯部６５とが噛み合い回転し、図６（Ｂ）の矢印
に示すように、閉止弁支持体６０が所定角度回転する。
主弁７０は吐出圧力導通管９３に当接しているから移動
（回動）しない。この閉止弁支持体６０の回転後の状態
は図６に示されており、主弁７０は回転に至らず、連動
突部７９が凹孔６０ｂの壁面に係合せず、連動突部７９
が凹孔６０ｂの一端部に当接するまで閉止弁支持体６０
のみ回転する。この状態において、第２閉止弁６４が連
通孔７６を「閉」とするとともに均圧孔７７を「開」と
する。(Switching operation: FIG. 6) When switching from the cooling state in FIG. 5 to heating, the switch of the motor section 10 is turned on. When this is turned on, the rotor 40 is rotated, and the drive tooth portion 48 is rotated by a predetermined angle of the drive portion 47.
And the passive tooth portion 65 mesh with each other and rotate, and the shutoff valve support body 60 rotates by a predetermined angle as shown by the arrow in FIG.
The main valve 70 does not move (rotate) because it is in contact with the discharge pressure conducting pipe 93. The state of the shutoff valve support body 60 after rotation is shown in FIG. 6, in which the main valve 70 does not rotate and the interlocking protrusion 79 does not engage with the wall surface of the recessed hole 60b.
Until the valve abuts on one end of the recess 60b.
Only rotate. In this state, the second shutoff valve 64 closes the communication hole 76 and opens the pressure equalizing hole 77.
【００２７】連通孔７６が閉止される結果、高圧連通凹
部７４内の高圧冷媒が弁室７３に供給されなくなるばか
りでなく、弁室７３内の高圧冷媒が均圧孔７７を介して
低圧連通凹部７５に流れることになり、結果として弁室
７３内の冷媒圧が低下する。そのため、主弁７０に対し
て、下からの冷媒圧が弁室７３からの冷媒圧より大とな
り、主弁７０は弁座８０から浮き上がって隙間８６が形
成されることになる。この隙間８６の形成により、閉止
弁支持体６０の回転はスムースになる。As a result of the communication hole 76 being closed, not only the high-pressure refrigerant in the high-pressure communication recess 74 is not supplied to the valve chamber 73, but the high-pressure refrigerant in the valve chamber 73 is also supplied to the low-pressure communication recess 77 via the pressure equalizing hole 77. As a result, the refrigerant pressure in the valve chamber 73 decreases. Therefore, the refrigerant pressure from below is greater than the refrigerant pressure from the valve chamber 73 with respect to the main valve 70, and the main valve 70 floats above the valve seat 80 to form the gap 86. Due to the formation of the gap 86, the rotation of the shutoff valve support body 60 is smooth.
【００２８】（主弁移動・図７）このスムースな回転状
態において、連動突部７９は凹孔６０ｂの壁面に当接し
ており、閉止弁支持体６０の更なる回転によって、主弁
７０は閉止弁支持体６０とともに支持軸４２を中心に弁
座８０に対して、図７（Ｂ）の矢印に示すように、回転
することになる（閉止弁支持体６０は公転、主弁７０は
自転）。この回転後の状態が図７である。そして、高圧
連通凹部７４の他端部は吐出圧力導通管９３に当接し
て、閉止弁支持体６０及び主弁７０の回転は停止する。(Movement of main valve: FIG. 7) In this smooth rotation state, the interlocking protrusion 79 is in contact with the wall surface of the recess 60b, and the main valve 70 is closed by further rotation of the closing valve support 60. With the valve support 60, the support shaft 42 rotates about the valve seat 80 as shown by the arrow in FIG. 7B (the closing valve support 60 revolves, the main valve 70 rotates). . The state after this rotation is shown in FIG. Then, the other end of the high-pressure communication recess 74 contacts the discharge pressure conducting pipe 93, and the rotations of the shutoff valve support body 60 and the main valve 70 are stopped.
【００２９】この結果、高圧連通凹部７４を介して、吐
出圧力導通孔８３と導通孔８５とが連通するとともに、
低圧連通凹部７５を介して、導通孔８４と吸入圧力導通
孔８２が連通するようになる。即ち、冷媒流路の切換が
行われたことになる。そしてこの切換において、主弁７
０は弁座８０から浮き上がった状態で回転することにな
り、主弁７０の回転がスムースに行われる。As a result, the discharge pressure conducting hole 83 and the conducting hole 85 communicate with each other through the high pressure communicating recess 74, and
The communication hole 84 and the suction pressure communication hole 82 communicate with each other via the low-pressure communication recess 75. That is, the switching of the refrigerant flow paths has been performed. And in this switching, the main valve 7
0 rotates in a state of being lifted from the valve seat 80, and the main valve 70 rotates smoothly.
【００３０】（暖房状態・図８）図７に示す均圧孔７７
が「開」、連通孔７６が「閉」である状態から、モータ
部１０は、プログラム上、駆動部４７を自動的に所定角
度反転するように設定されている。その結果、図８に示
すように、高圧連通凹部７４の他端部が吐出圧力導通管
９３に当接して主弁７０の回転が停止している状態にお
いて、閉止弁支持体６０が反対方向に回転し（図８
（Ｂ）参照）、第１閉止弁６３は均圧孔７７を「閉」と
するとともに連通孔７６を「開」とする。この結果、弁
室７３内の冷媒圧が高くなり、主弁７０は弁座８０に押
圧状態となって、冷媒が、高圧連通凹部７４を介して吐
出圧力導通管９３から導通管９５へ、また、低圧連通凹
部７５を介して導通管９４から吸入圧力導通管９２へ高
い気密性を保持されながら円滑に流れることになる。以
上によって、冷房状態から暖房状態への切換が完了す
る。(Heating state: FIG. 8) Pressure equalizing hole 77 shown in FIG.
Is open and the communication hole 76 is closed, the motor unit 10 is programmed to automatically reverse the drive unit 47 by a predetermined angle. As a result, as shown in FIG. 8, in the state where the other end of the high pressure communication recess 74 abuts the discharge pressure conducting pipe 93 and the rotation of the main valve 70 is stopped, the shutoff valve support 60 moves in the opposite direction. Rotate (Fig. 8
In the first shutoff valve 63, the pressure equalizing hole 77 is “closed” and the communication hole 76 is “open”. As a result, the refrigerant pressure in the valve chamber 73 increases, the main valve 70 is pressed against the valve seat 80, and the refrigerant flows from the discharge pressure conducting pipe 93 to the conducting pipe 95 via the high pressure communicating recess 74, and Therefore, the gas smoothly flows from the conduit 94 to the suction pressure conduit 92 via the low-pressure communication recess 75 while maintaining high airtightness. With the above, the switching from the cooling state to the heating state is completed.
【００３１】(暖房から冷房への切換)次に、暖房から冷
房への切換について、図８〜１０及び図５を用いて説明
する。
（暖房状態・図８）図８（Ａ）（Ｂ）は切換前の暖房状
態を示しており、前述のように、弁座８０、主弁７０お
よび閉止弁支持体６０の位置関係により、連通孔７６は
「開」であり、均圧孔７７は「閉」の状態である。ま
た、この状態においては、連動突部７９は、凹孔６０ｂ
の中央部に位置し、また、高圧連通凹部７４の他端部
は、吐出圧力導通管９３の上端部に当接している。(Switching from Heating to Cooling) Next, switching from heating to cooling will be described with reference to FIGS. (Heating state-FIG. 8) FIGS. 8A and 8B show a heating state before switching, and as described above, communication is performed depending on the positional relationship between the valve seat 80, the main valve 70, and the closing valve support body 60. The hole 76 is "open" and the pressure equalizing hole 77 is "closed". Further, in this state, the interlocking protrusion 79 has the concave hole 60b.
Of the high pressure communicating recess 74, and the other end of the high pressure communicating recess 74 is in contact with the upper end of the discharge pressure conducting pipe 93.
【００３２】（閉止弁支持体動作・図９）暖房スイッチ
をオンすることにより、モータ部１０により支持軸４２
が回転し、閉止弁支持体６０が図９（Ａ）（Ｂ）の矢印
で示すように所定角度回転する。この間、回転する凹孔
６０ｂは連動突部７９に係合しないから、主弁７０に回
転力は伝わらない。この閉止弁支持体６０の回転の間、
連通孔７６は「閉」となり、均圧孔７７は「開」とな
る。その結果、弁室７３内の冷媒圧は低下するため、主
弁７０に対する冷媒圧は下部の方が大きくなり、該冷媒
圧の差圧により、主弁７０は弁座８０から浮上すること
になる。(Operation of the shutoff valve support body, FIG. 9) By turning on the heating switch, the support shaft 42 is supported by the motor unit 10.
Rotates, and the stop valve support body 60 rotates by a predetermined angle as shown by the arrows in FIGS. 9 (A) and 9 (B). During this time, the rotating concave hole 60b does not engage with the interlocking protrusion 79, so that the rotational force is not transmitted to the main valve 70. During the rotation of the stop valve support 60,
The communication hole 76 is "closed" and the pressure equalizing hole 77 is "open". As a result, the refrigerant pressure in the valve chamber 73 decreases, so that the refrigerant pressure with respect to the main valve 70 becomes larger in the lower portion, and the main valve 70 floats above the valve seat 80 due to the differential pressure of the refrigerant pressure. .
【００３３】（主弁移動・図１０）この浮上状態におい
て、更なる支持軸４２の回転（図１０（Ｂ）に示す矢
印）に伴って、凹孔６０ｂは連動突部７９に係合し、係
合後は、閉止弁支持体６０の回転（公転・図１０（Ｂ）
に示す矢印）により、連動して主弁７０も回転する（図
１０（Ａ）に示す矢印）。この間、主弁７０は浮上状態
にあることから、その回転に伴う流路切換がスムースに
行われる。そして、図１０に示すように、第２閉止弁６
４が連通孔７６を「閉」とし、均圧孔７７を「開」とす
る。この主弁７０の動きは、高圧連通凹部７４の一端部
が吐出圧力導通管９３に当接することで停止する。この
状態において、冷媒流路は切り換えられ、図１０に示す
とおり、高圧連通凹部７４を介して吐出圧力導通管９３
と導通管９４が連通し、低圧連通凹部７５を介して導通
管９５と吸入圧力導通管９２が連通する。この時点で暖
房から冷房への冷媒流路の切換がなされたことになる。(Movement of main valve, FIG. 10) In this floating state, the concave hole 60b is engaged with the interlocking protrusion 79 with further rotation of the support shaft 42 (arrow shown in FIG. 10B), After engagement, rotation of the stop valve support 60 (revolution, Fig. 10 (B))
The arrow (shown in FIG. 10) causes the main valve 70 to rotate in conjunction therewith (arrow shown in FIG. 10A). During this time, since the main valve 70 is in the floating state, the flow path switching is smoothly performed according to the rotation of the main valve 70. Then, as shown in FIG. 10, the second shutoff valve 6
4 makes the communication hole 76 "closed" and the pressure equalizing hole 77 "open". The movement of the main valve 70 is stopped when one end of the high-pressure communication recess 74 contacts the discharge pressure conducting pipe 93. In this state, the refrigerant flow path is switched, and as shown in FIG. 10, the discharge pressure conducting pipe 93 is passed through the high pressure communicating recess 74.
And the suction pipe 94 are communicated with each other through the low pressure communication recess 75. At this point, the refrigerant flow path is switched from heating to cooling.
【００３４】（冷房状態・図５）図１０（Ａ）（Ｂ）の
状態から、閉止弁支持体６０は支持軸４２により自動的
に逆回転（図５（Ａ）（Ｂ）の矢印参照）し、図５に示
す通り、均圧孔７７が「閉」となると共に連通孔７６が
「開」となって、高圧連通凹部７４は弁室７３と連通さ
せる。その結果、弁室７３内の冷媒圧が高くなり、主弁
７０の浮上は冷媒流路の切り換えが終了した時点で消滅
する。主弁７０は弁座８０に押圧状態となって、冷媒
が、高圧連通凹部７４を介して吐出圧力導通管９３から
導通管９４へ、また、低圧連通凹部７５を介して、導通
管９５から吸入圧力導通管９２へ高い気密性を保持され
ながら円滑に流れることになる。(Cooling state: FIG. 5) From the state shown in FIGS. 10A and 10B, the shut-off valve support body 60 is automatically rotated in the reverse direction by the support shaft 42 (see the arrows in FIGS. 5A and 5B). Then, as shown in FIG. 5, the pressure equalizing hole 77 is “closed” and the communication hole 76 is “open”, so that the high pressure communication recess 74 communicates with the valve chamber 73. As a result, the refrigerant pressure in the valve chamber 73 becomes high, and the floating of the main valve 70 disappears when the switching of the refrigerant flow paths is completed. The main valve 70 is pressed against the valve seat 80, and the refrigerant is sucked from the discharge pressure conducting pipe 93 to the conducting pipe 94 via the high pressure communicating recess 74 and from the conducting pipe 95 via the low pressure communicating recess 75. The pressure conduit 92 smoothly flows while maintaining high airtightness.
【００３５】[0035]
【発明の効果】上記構成により、請求項１記載の発明に
よれば、冷媒の流路切換が主弁の浮上状態において行わ
れるため極めて軽快に行われるようになった。また、請
求項２に記載の発明によれば、上記効果に加えて、主
弁、弁座ともに互いに離れた状態で移動し摺接すること
がないため、前記両部材の磨耗が発生せず、耐久性が向
上する。As described above, according to the invention described in claim 1, since the flow passage of the refrigerant is switched while the main valve is in the floating state, it can be performed very easily. Further, according to the invention described in claim 2, in addition to the above effect, since the main valve and the valve seat do not move and slide against each other in a state of being separated from each other, wear of the both members does not occur, and durability is improved. The property is improved.
【００３６】また、請求項３記載の発明によれば、上記
いずれかの効果に加えて、駆動部においてトルク増幅効
果があるから閉止弁支持体の駆動力が少なくて済み、装
置全体の小型化・軽量化を実現することができるに至っ
た。また、請求項４記載の発明によれば、上記いずれか
の効果に加えて、第１閉止弁及び第２閉止弁が主弁側に
弾圧状態となっているから、連通孔及び均圧孔への接離
の動作が確実となり、冷媒の漏れ等の発生が少なくな
る。Further, according to the invention described in claim 3, in addition to any one of the above effects, there is a torque amplification effect in the drive portion, so that the driving force of the closing valve support can be small, and the overall size of the device can be reduced.・ We have succeeded in achieving weight reduction. Further, according to the invention of claim 4, in addition to any of the above effects, since the first closing valve and the second closing valve are in the elastic state on the main valve side, the communication hole and the pressure equalizing hole are formed. The operation of contacting and separating is reliable, and the occurrence of refrigerant leakage is reduced.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の実施例における四方切換弁の外観斜視
図。FIG. 1 is an external perspective view of a four-way switching valve according to an embodiment of the present invention.
【図２】（Ａ）は図１の縦断面図、（Ｂ）は図２（Ａ）
のＡ−Ａ断面図。2A is a longitudinal sectional view of FIG. 1, and FIG. 2B is FIG. 2A.
FIG.
【図３】同四方切換弁の本体部の斜視図。FIG. 3 is a perspective view of a main body of the four-way switching valve.
【図４】同四方切換弁の主弁の底面図。FIG. 4 is a bottom view of the main valve of the same four-way switching valve.
【図５】同四方切換弁の冷房状態を示す説明図（Ａ），
（Ｂ）。FIG. 5 is an explanatory diagram (A) showing a cooling state of the four-way switching valve.
(B).
【図６】同冷房状態から暖房への切換動作１を示す説明
図（Ａ），（Ｂ）。FIG. 6 is an explanatory view (A) and (B) showing a switching operation 1 from the cooling state to the heating.
【図７】同冷房状態から暖房への切換動作２を示す説明
図（Ａ），（Ｂ）。FIG. 7 is an explanatory view (A) and (B) showing a switching operation 2 from the cooling state to heating.
【図８】同四方切換弁の暖房状態を示す説明図（Ａ），
（Ｂ）。FIG. 8 is an explanatory view (A) showing a heating state of the four-way switching valve,
(B).
【図９】同暖房状態から冷房への切換動作１を示す説明
図（Ａ），（Ｂ）。FIG. 9 is an explanatory view (A) and (B) showing a switching operation 1 from the heating state to cooling.
【図１０】同暖房状態から冷房への切換動作２を示す説
明図（Ａ），（Ｂ）。FIG. 10 is an explanatory view (A) and (B) showing a switching operation 2 from the heating state to the cooling mode.
【図１１】冷暖房運転時のサイクル構成図。FIG. 11 is a cycle configuration diagram during cooling / heating operation.
Ｃ・・・圧縮機 ＳＶ・・・切換弁 Ｔ・・
・電子リニア制御弁
Ｅ１・・熱交換器（凝縮器） Ｅ２・・熱交換器
（蒸発器）
１０・・モータ部 ２０・・ステータ ２１・・
ステータコイル
２２・・ヨーク ２３・・ケーブル ２４・・
コネクタ
３０・・ケース
４０・・ロータ ４１・・連結リング枠
４２・・支持軸
４６・・押しばね ４７・・駆動部
４８・・駆動歯部
５０・・本体部 ５１・・本体ケース
６０・・閉止弁支持体 ６０ｂ・・凹孔
６３・・第１閉止弁 ６４・・第２閉止弁
６５・・受動歯部
６６，６７・・閉止弁ばね
７０・・主弁 ７１・・支持軸孔
７２・・中央凹部
７３・・弁室 ７４・・高圧連通凹部
７５・・低圧連通凹部
７６・・連通孔 ７７・・均圧孔
７８・・軸ピン
７９・・連動突部 ８０・・弁座
８１・・接合部
８２・・吸入圧力導通孔 ８３・・吐出圧力導通孔
８４・・（室外熱交換器用の）導通孔 ８５・・（室
内熱交換器用の）導通孔
８６・・隙間
９０・・導管群 ９２・・吸入圧力導通管
９３・・吐出圧力導通管 ９４・・（室外熱交換器用
の）導通管
９５・・（室内熱交換器用の）導通管 １００・・
四方切換弁C ... Compressor SV ... Switching valve T ...
・ Electronic linear control valve E1 ・ ・ Heat exchanger (condenser) E2 ・ ・ Heat exchanger (evaporator) 10 ・ Motor section 20 ・ ・ Stator 21 ・ ・
Stator coil 22 ・ ・ Yoke 23 ・ ・ Cable 24 ・ ・
Connector 30, case 40, rotor 41, connecting ring frame
42 ... Support shaft 46 ... Push spring 47 ... Drive unit
48 ... Drive tooth portion 50. Main body portion 51. Main body case 60 .. Closure valve support body 60b .. Recessed hole 63 .. First closing valve 64 .. Second closing valve
65 ・ ・ Passive tooth portions 66, 67 ・ ・ Closed valve spring 70 ・ ・ Main valve 71 ・ ・ Support shaft hole
72 ... Central recess 73 ... Valve chamber 74 ... High pressure communication recess
75 ··· Low-pressure communication recess 76 · · Communication hole 77 · · Pressure equalizing hole
78 ··· Shaft pin 79 · · Interlocking protrusion 80 · · Valve seat
81 ... Joint part 82 ... Suction pressure conducting hole 83 ... Discharge pressure conducting hole 84 ... Conducting hole 85 (for outdoor heat exchanger) ... Conducting hole 86 (for indoor heat exchanger) ... Gap 90 ... Conduit group 92 ··· Suction pressure conducting pipe 93 ·· Discharge pressure conducting pipe 94 ··· Conducting pipe 95 (for outdoor heat exchanger) ··· Conducting pipe 100 (for indoor heat exchanger)
4-way switching valve
───────────────────────────────────────────────────── フロントページの続き (72)発明者 青木 哲也 東京都世田谷区等々力７丁目17番24号 株 式会社不二工機内 Ｆターム(参考） 3H062 AA05 AA13 BB10 BB28 BB30 BB33 CC02 EE07 FF41 HH04 HH08 3H063 AA05 BB02 BB22 BB32 BB37 CC06 DA14 DB31 GG14 3H067 AA13 AA33 BB03 BB12 CC02 CC22 CC23 CC32 CC42 DD03 DD32 DD45 EA02 EC08 FF11 GG23 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Tetsuya Aoki Setagaya-ku, Tokyo Todoroki 7-1724 shares Ceremony company Fuji Kouki F-term (reference) 3H062 AA05 AA13 BB10 BB28 BB30 BB33 CC02 EE07 FF41 HH04 HH08 3H063 AA05 BB02 BB22 BB32 BB37 CC06 DA14 DB31 GG14 3H067 AA13 AA33 BB03 BB12 CC02 CC22 CC23 CC32 CC42 DD03 DD32 DD45 EA02 EC08 FF11 GG23
Claims (4)
ースと該ケース内の弁室に配置された主弁と弁座とから
なる本体部と、を備えた四方切換弁において、弁座は、
圧縮機の吸入圧力側と吐出圧力側とにそれぞれ連通する
吸入圧力導通孔と吐出圧力導通孔とを備え、且つ、室内
及び室外の各熱交換器にそれぞれ連通する二つの導通孔
とを備え、 主弁は、前記吸入圧力導通孔と前記二つの導通孔に選択
的に連通する低圧連通凹部と、前記吐出圧力導通孔と前
記二つの導通孔に選択的に連通する高圧連通凹部とを備
え、 更に、前記低圧連通凹と前記弁室とを連通する均圧孔
と、前記高圧連通凹部と前記弁室とを連通する連通孔と
を備えるとともに、 主弁上には、ロータの回転に連動する閉止弁支持体を設
け、該閉止弁支持体には、第１閉止弁と第２閉止弁とを
具備させ、 該第１閉止弁と第２閉止弁とにより、均圧孔と連通孔と
を選択的に開閉可能とすると共に、連通孔が閉で且つ均
圧孔が開状態において、主弁を流路切換えのために移動
させることを特徴とする四方切換弁。1. A four-way switching valve comprising: a motor portion including a stator and a rotor; a case; and a main body portion including a main valve disposed in a valve chamber in the case; and a valve seat.
A suction pressure communicating hole and a discharge pressure communicating hole that communicate with the suction pressure side and the discharge pressure side of the compressor are provided, and two communicating holes that communicate with the indoor and outdoor heat exchangers, respectively, The main valve includes a low-pressure communication recess that selectively communicates with the suction pressure communication hole and the two communication holes, and a high-pressure communication recess that selectively communicates with the discharge pressure communication hole and the two communication holes. Further, a pressure equalizing hole that communicates the low pressure communication recess and the valve chamber, and a communication hole that communicates the high pressure communication recess and the valve chamber are provided, and the main valve is interlocked with the rotation of the rotor. A shutoff valve support is provided, and the shutoff valve support is provided with a first shutoff valve and a second shutoff valve. The first shutoff valve and the second shutoff valve form a pressure equalizing hole and a communication hole. It can be opened and closed selectively, and when the communication hole is closed and the pressure equalization hole is open, A four-way switching valve characterized in that the valve is moved to switch the flow path.
ら離れた状態となることを特徴とする請求項１記載の四
方切換弁。2. The four-way switching valve according to claim 1, wherein the main valve is separated from the upper surface of the valve seat during the movement.
一体に回転する駆動歯部と閉止弁支持体側に設けた受動
歯部とから駆動部を形成し、該駆動部はトルク増幅可能
に形成することを特徴とする請求項１又は２記載の四方
切換弁。3. As a rotation means of a shutoff valve support, a drive portion is formed from a drive tooth portion that rotates integrally with a rotor and a passive tooth portion provided on the shutoff valve support side, and the drive portion is capable of torque amplification. The four-way switching valve according to claim 1 or 2, wherein the four-way switching valve is formed.
圧状態で閉止弁支持体に支持させることを特徴とする請
求項１〜３記載のいずれかの四方切換弁。4. The four-way switching valve according to claim 1, wherein the first shutoff valve and the second shutoff valve are supported by a shutoff valve support body in an elastic pressure state on the main valve side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002117662A JP4081290B2 (en) | 2002-04-19 | 2002-04-19 | Four-way selector valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002117662A JP4081290B2 (en) | 2002-04-19 | 2002-04-19 | Four-way selector valve |
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| Publication Number | Publication Date |
|---|---|
| JP2003314715A true JP2003314715A (en) | 2003-11-06 |
| JP4081290B2 JP4081290B2 (en) | 2008-04-23 |
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| JP2002117662A Expired - Fee Related JP4081290B2 (en) | 2002-04-19 | 2002-04-19 | Four-way selector valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013001751A1 (en) * | 2011-06-30 | 2013-01-03 | ダイキン工業株式会社 | Refrigerant flow path switching valve and air conditioner using same |
| CN107620825A (en) * | 2016-07-14 | 2018-01-23 | 浙江三花智能控制股份有限公司 | A kind of electric T-shaped valve and refrigeration plant |
| CN107620813A (en) * | 2016-07-14 | 2018-01-23 | 浙江三花智能控制股份有限公司 | A kind of electric T-shaped valve and refrigeration plant |
| CN110805952A (en) * | 2019-11-26 | 2020-02-18 | 珠海格力电器股份有限公司 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5087677B2 (en) | 2008-06-02 | 2012-12-05 | 株式会社鷺宮製作所 | Flow path switching valve |
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2002
- 2002-04-19 JP JP2002117662A patent/JP4081290B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013001751A1 (en) * | 2011-06-30 | 2013-01-03 | ダイキン工業株式会社 | Refrigerant flow path switching valve and air conditioner using same |
| JP2013015150A (en) * | 2011-06-30 | 2013-01-24 | Daikin Industries Ltd | Refrigerant flow path switching valve and air conditioning apparatus using same |
| US9234684B2 (en) | 2011-06-30 | 2016-01-12 | Daikin Industries, Ltd. | Refrigerant passage change-over valve and air conditioner using the same |
| CN107620825A (en) * | 2016-07-14 | 2018-01-23 | 浙江三花智能控制股份有限公司 | A kind of electric T-shaped valve and refrigeration plant |
| CN107620813A (en) * | 2016-07-14 | 2018-01-23 | 浙江三花智能控制股份有限公司 | A kind of electric T-shaped valve and refrigeration plant |
| CN110805952A (en) * | 2019-11-26 | 2020-02-18 | 珠海格力电器股份有限公司 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
| CN110805952B (en) * | 2019-11-26 | 2023-11-07 | 珠海格力电器股份有限公司 | Rotatable stop valve, air conditioning system and control method of air conditioning system |
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