JP4639102B2 - Motorized valve - Google Patents

Motorized valve Download PDF

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JP4639102B2
JP4639102B2 JP2005079260A JP2005079260A JP4639102B2 JP 4639102 B2 JP4639102 B2 JP 4639102B2 JP 2005079260 A JP2005079260 A JP 2005079260A JP 2005079260 A JP2005079260 A JP 2005079260A JP 4639102 B2 JP4639102 B2 JP 4639102B2
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valve
valve body
holder
motor
shaft
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JP2006258245A (en
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教郎 鈴木
悦孝 藤田
仁志 梅澤
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Fujikoki Corp
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Fujikoki Corp
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Priority to CNA2006100043816A priority patent/CN1840945A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/24—Structural association with auxiliary mechanical devices

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Valve Housings (AREA)

Description

本発明は、例えば冷媒等の流体の流量を制御するための電動弁に関する。   The present invention relates to an electric valve for controlling the flow rate of a fluid such as a refrigerant.

従来から、例えば冷媒等の流体の流量を制御するために電動弁が用いられている。このような電動弁の一例として、図４に示す例えば特許文献１に示すような構造のものが使用されている。この電動弁は、モータの回転軸と歯車等を介して連結された弁軸１０１が軸受１０２に軸支されるとともに、弁軸１０１’のねじ部がホルダ１０３に螺合されている。軸受１０２はホルダ１０３に固定されている。弁軸１０１’はピポット軸受１０４等を介して弁体１０５に連結されている。弁体１０５を収納する弁本体１０６はロックナット１０７によりホルダ１０３に結合されている。弁本体１０６内には、流体が弁本体１０６内からモータ側へ流入するのを防止するためのベローズ１０８が設けられている。   Conventionally, for example, a motor-operated valve is used to control the flow rate of a fluid such as a refrigerant. As an example of such a motor-operated valve, a structure shown in, for example, Patent Document 1 shown in FIG. 4 is used. In this electric valve, a valve shaft 101 connected to a rotating shaft of a motor via a gear or the like is pivotally supported by a bearing 102, and a screw portion of the valve shaft 101 'is screwed to a holder 103. The bearing 102 is fixed to the holder 103. The valve shaft 101 'is connected to the valve body 105 via a pivot bearing 104 or the like. A valve body 106 that houses the valve body 105 is coupled to the holder 103 by a lock nut 107. A bellows 108 is provided in the valve body 106 to prevent fluid from flowing from the valve body 106 to the motor side.

また、この電動弁には、ホルダ１０３と弁本体１０６との間に、パッキン１１０が備えられている。ホルダ１０３の弁本体１０６側の先端は、エッジ状に形成されシール部１１１となっている。パッキン１１０およびシール部１１１により、外部からの弁本体１０６への水分等の侵入を防止する。   In addition, this electric valve is provided with a packing 110 between the holder 103 and the valve body 106. The tip of the holder 103 on the valve body 106 side is formed in an edge shape and serves as a seal portion 111. The packing 110 and the seal part 111 prevent moisture and the like from entering the valve body 106 from the outside.

この電動弁では、モータを回転させて弁軸１０１’のねじ部を回転させることにより、弁軸１０１’を上下させて、弁軸１０１’と連結された弁体１０５の弁座に対する開度を調整して、流体の流量を制御する。
特開平１１−２２５４６６号公報 In this electric valve, the opening of the valve body 105 connected to the valve shaft 101 ′ relative to the valve seat is raised by rotating the motor to rotate the threaded portion of the valve shaft 101 ′, thereby moving the valve shaft 101 ′ up and down. Adjust to control fluid flow.
Japanese Patent Laid-Open No. 11-225466

上述した特許文献１の電動弁では、ホルダ１０３と弁本体１０６を結合するのにロックナット１０７を用いているが、過酷な使用条件においては、このロックナット１０７とホルダ１０３及び弁本体１０６との隙間に侵入した水分が周囲の温度が下がることにより氷結してしまうことがある。   In the electric valve of Patent Document 1 described above, the lock nut 107 is used to couple the holder 103 and the valve main body 106. However, under severe use conditions, the lock nut 107, the holder 103, and the valve main body 106 are not connected. Moisture that has entered the gap may freeze when the ambient temperature drops.

ロックナット１０７とホルダ１０３及び弁本体１０６との隙間に侵入した水分は氷結すると体積が膨張してしまうために、ロックナット１０７を押し上げてしまったり、ホルダ１０３のシール部１１１を壊してしまったり等、部品を破損、変形してしまうことがあった。   Moisture that has entered the gaps between the lock nut 107 and the holder 103 and the valve body 106 expands in volume when frozen, so that the lock nut 107 is pushed up or the seal portion 111 of the holder 103 is broken. The parts may be damaged or deformed.

この防止策として、ロックナット１０７とホルダ１０３及び弁本体１０６との接合部に例えばロックタイト（登録商標）等の接着剤を塗布することにより、隙間への水分の侵入を防止するようにしていた。しかしながら、接着剤を塗布する作業工数が増えてしまうという問題があった。   As a preventive measure, an adhesive such as Loctite (registered trademark) is applied to the joint between the lock nut 107, the holder 103, and the valve main body 106 to prevent moisture from entering the gap. However, there is a problem that the number of work steps for applying the adhesive increases.

本発明は、上記実情に鑑みてなされたもので、作業工数を増やすことなく、過酷な使用条件においても、結合部材であるロックナット内の水分の氷結時の体積膨張による破損、変形を防止することができる電動弁を提供することを目的とする。   The present invention has been made in view of the above circumstances, and prevents damage and deformation due to volume expansion at the time of icing of water in the lock nut, which is a coupling member, even under severe use conditions without increasing the number of work steps. An object of the present invention is to provide a motor-operated valve that can be used.

上記目的を達成するため、本発明の電動弁は、
モータに固定されるホルダと、このホルダにロックナットを介して連結される弁本体と、この弁本体に備わっている弁座の開口と対向するように弁室内に配置されかつ前記モータの作動により前記開口の開閉を操作する弁体とを含み、
該ロックナットと前記ホルダとの間に生成される空間に弾性体を配置し、
前記ホルダには前記弁本体と当接する先端が尖ったエッジシールが備わっており、
前記弾性体は、前記弁本体と前記エッジシールとの間に配置されたことを特徴とする。 In order to achieve the above-mentioned object,
A holder fixed to the motor, a valve main body connected to the holder via a lock nut, and disposed in the valve chamber so as to face an opening of a valve seat provided in the valve main body, and by the operation of the motor A valve body for operating opening and closing of the opening,
An elastic body is arranged in a space generated between the lock nut and the holder ,
The holder has an edge seal with a sharp tip that contacts the valve body,
The elastic body is arranged between the valve body and the edge seal .

また、一端が前記弁本体に固定されかつ他端が前記弁体に固定されるベローズを備えるようにしてもよい。   Moreover, you may make it provide the bellows by which one end is fixed to the said valve main body and the other end is fixed to the said valve body.

本発明によれば、作業工数を増やすことなく、結合部材であるロックナット内の水分の氷結時の体積膨張による破損、変形を防止することができる電動弁を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the electric valve which can prevent the failure | damage and deformation | transformation by the volume expansion at the time of the freezing of the water | moisture content in the lock nut which is a coupling member can be provided, without increasing work man-hours.

本発明の実施の形態に係る電動弁について、以下図面を参照して説明する。電動弁１０は、例えば、冷凍・空調装置において、冷媒等の流体の流量を制御するための制御弁として用いられている。電動弁１０は、モータ３０の出力を歯車等を介して弁体に伝達するものである。   An electric valve according to an embodiment of the present invention will be described below with reference to the drawings. The motor-operated valve 10 is used as a control valve for controlling the flow rate of a fluid such as a refrigerant in a refrigeration / air conditioning apparatus, for example. The electric valve 10 transmits the output of the motor 30 to the valve body through a gear or the like.

電動弁１０は、図１〜図３に示すように、弁軸１１と、弁軸１１と連結される弁体１２と、弁軸１１と弁体１２とを連結するための球体１３と、ブッシュ１４と、ベローズ１５と、弁軸１１の軸受である出力軸受１６と、モータに固定されるとともに弁軸１１を保持するホルダ１７と、弁体１２を収納する弁本体１８と、弁本体１８に一体に形成された弁座１８ａと、ホルダ１７と弁本体１８とを連結するロックナット１９と、ホルダ１７と弁本体１８との間に配置された弾性体５０とを備えている。   As shown in FIGS. 1 to 3, the motor-operated valve 10 includes a valve shaft 11, a valve body 12 coupled to the valve shaft 11, a sphere 13 for coupling the valve shaft 11 and the valve body 12, and a bush 14, a bellows 15, an output bearing 16 that is a bearing for the valve shaft 11, a holder 17 that is fixed to the motor and holds the valve shaft 11, a valve body 18 that houses the valve body 12, and a valve body 18 An integrally formed valve seat 18 a, a lock nut 19 that connects the holder 17 and the valve body 18, and an elastic body 50 disposed between the holder 17 and the valve body 18 are provided.

弁軸１１は、モータ３０の回転出力が伝達され、弁体１２を上下移動させるための出力軸である。弁軸１１は、モータ側に位置する第１の弁軸１１ａと弁体１２側に位置する第２の弁軸１１ｂとにより構成されている。第１の弁軸１１ａの下端にはマイナスドライバ形状の凸部１１１ａが形成され、第２の弁軸１１ｂの上端にはマイナスドライバ溝状の凹部１１１ｂが形成されている。凸部１１１ａを凹部１１１ｂに嵌合することにより第１の弁軸１１ａと第２の弁軸１１ｂとが連結される。第１の弁軸１１ａは、モータケースに内蔵されたモータ３０の回転軸とピニオン、歯車等を介して連結されている。また、第１の弁軸１１ａは出力軸受１６に軸支されている。出力軸受１６はモータ３０のモータケースに設けられている。第２の弁軸１１ｂの外周にはおねじ部１１２ｂが形成されている。第２の弁軸１１ｂのおねじ部１１２ｂが、ホルダ１７の中央に形成された第１のめねじ部１７ａと螺合することにより、第２の弁軸１１ｂがホルダ１７に回転可能に軸方向に移動可能に保持される。   The valve shaft 11 is an output shaft for transmitting the rotational output of the motor 30 and moving the valve body 12 up and down. The valve shaft 11 includes a first valve shaft 11a located on the motor side and a second valve shaft 11b located on the valve body 12 side. A minus driver-shaped projection 111a is formed at the lower end of the first valve shaft 11a, and a minus driver groove-shaped recess 111b is formed at the upper end of the second valve shaft 11b. The first valve shaft 11a and the second valve shaft 11b are connected by fitting the convex portion 111a to the concave portion 111b. The first valve shaft 11a is connected to the rotating shaft of the motor 30 built in the motor case via a pinion, a gear, and the like. The first valve shaft 11 a is pivotally supported by the output bearing 16. The output bearing 16 is provided in the motor case of the motor 30. A male screw portion 112b is formed on the outer periphery of the second valve shaft 11b. The male thread 112b of the second valve stem 11b is screwed with the first female thread 17a formed at the center of the holder 17, so that the second valve stem 11b can rotate to the holder 17 in the axial direction. Is held movable.

弁体１２は、上下移動することにより弁座１８ａに対して接離して、弁座１８ａに対する開口度を調整するためのものである。弁体１２は、弁座１８ａの開口である弁孔１８１ａと対向するように弁室内に配置されている。弁体１２は、弁軸１１側の第１の弁体１２ａと弁座１８ａ側の第２の弁体１２ｂにより構成されている。第１の弁体１２ａは第２の弁体１２ｂに例えば圧入固定される。第１の弁体１２ａの外周には凸状の係止部１２２ａが形成されており、この係止部１２２ａは、ベローズ１５を固定するために設けられている。第１の弁体１２ａの上端には凹部１２３ａが形成されており、この凹部１２３ａには凸形状のブッシュ１４が圧入される。第２の弁体１２ｂは、弁座１８ａ側の先端が尖形状になっている。   The valve body 12 is for moving up and down so as to come into contact with and separate from the valve seat 18a and adjust the opening degree with respect to the valve seat 18a. The valve body 12 is disposed in the valve chamber so as to face the valve hole 181a which is an opening of the valve seat 18a. The valve body 12 includes a first valve body 12a on the valve shaft 11 side and a second valve body 12b on the valve seat 18a side. The first valve body 12a is press-fitted and fixed to the second valve body 12b, for example. A convex locking portion 122 a is formed on the outer periphery of the first valve body 12 a, and this locking portion 122 a is provided for fixing the bellows 15. A recess 123a is formed at the upper end of the first valve body 12a, and the convex bush 14 is press-fitted into the recess 123a. The tip of the second valve body 12b on the valve seat 18a side has a pointed shape.

球体１３は、ピポット軸受として第２の弁軸１１ｂの下端とブッシュ１４との間に介在している。球体１３は、例えばステンレス材を用いて形成されており、例えばスポット溶接で第２の弁軸１１ｂの下端に溶接されている。また、球体１３は、第１の弁体１２ａの上端に圧入されたブッシュ１４のくぼみ１４ａに回転自在に当接して配置されている。   The spherical body 13 is interposed between the lower end of the second valve shaft 11b and the bush 14 as a pivot bearing. The spherical body 13 is formed using, for example, a stainless material, and is welded to the lower end of the second valve shaft 11b, for example, by spot welding. Further, the spherical body 13 is disposed so as to be rotatable in contact with the indentation 14a of the bush 14 press-fitted into the upper end of the first valve body 12a.

ベローズ１５は、伸縮性、気密性を有し、弁本体１８に流入する冷媒がモータ３０側へと侵入するのを防止する機能を備える。ベローズ１５は、上端が弁本体１８内の端部にカシメ固定されたワッシャ２１に半田付けにより固定され、下端が第１の弁体１２ａの係止部１２２ａに半田付けにより固定されている。   The bellows 15 has stretchability and airtightness, and has a function of preventing the refrigerant flowing into the valve body 18 from entering the motor 30 side. The bellows 15 is fixed by soldering to a washer 21 whose upper end is caulked and fixed to an end portion in the valve body 18, and its lower end is fixed to the locking portion 122a of the first valve body 12a by soldering.

弁本体１８は、弁体１２を収納するために筒状となっている。弁本体１８は、側面下方に接続された第１の通路１８ｂと、この第１の通路１８ｂと連通するとともに底面に接続された第２の通路１８ｃとを有している。第１の通路１８ｂおよび第２の通路１８ｃはそれぞれ冷媒配管に接続されている。第１の通路１８ｂ及び第２の通路１８ｃとの連通部で、弁本体１８の第２の通路１８ｃとの接続部には弁座１８ａが形成されている。弁座１８ａは、弁本体１８の底面に第２の通路１８ｃと連通する弁孔１８１ａを有している。   The valve body 18 has a cylindrical shape for housing the valve body 12. The valve main body 18 includes a first passage 18b connected to the lower side of the side surface, and a second passage 18c communicating with the first passage 18b and connected to the bottom surface. The first passage 18b and the second passage 18c are each connected to a refrigerant pipe. A valve seat 18a is formed at a connection portion between the first passage 18b and the second passage 18c and a connection portion between the valve body 18 and the second passage 18c. The valve seat 18 a has a valve hole 181 a communicating with the second passage 18 c on the bottom surface of the valve body 18.

出力軸受１６の外周に形成されたおねじ部１６ａをホルダ１７の上方に形成された第２のめねじ部１７ｂに螺合することにより、出力軸受１６をホルダ１７に固定する。出力軸受１６の底面とホルダ１７との間には、第２の弁軸１１ｂのストッパであるワッシャ２２が設けられている。   The output bearing 16 is fixed to the holder 17 by screwing a male thread portion 16 a formed on the outer periphery of the output bearing 16 with a second female thread portion 17 b formed above the holder 17. Between the bottom surface of the output bearing 16 and the holder 17, a washer 22 that is a stopper of the second valve shaft 11b is provided.

ロックナット１９は、弁本体１８の側面上方に形成されたおねじ部１８ｄに螺合することにより、弁本体１８とホルダ１７とを連結する。弁本体１８の上端は外径よりも小径の端部１８ｅが形成されており、ホルダ１７の下端には凹部１７ｃが形成されている。弁本体１８の端部１８ｅがホルダ１７の凹部１７ｃに嵌合された状態で弁本体１８とホルダ１７とは連結される。弁本体１８の端部１８ｅの先端部分とホルダ１７の凹部１７ｃの底面との間にゴムパッキン２３が挟持されて配置されている。このゴムパッキン２３により、弁本体１８とホルダ１７との間が封止される。また、ホルダ１７の下端の開口周縁部１７ｄは、先端が鋭角に尖ったエッジ状に形成されエッジシールを構成している。この先端が鋭角に尖ったエッジ状に形成されたホルダ１７の開口周縁部１７ｄが、ロックナット１９を締め付けることにより、弁本体１８の段差部１８ｆに当接され、押し当てられて、シールが確保されている。ゴムパッキン２３、および、シール部を構成する開口周縁部１７ｄの先端の鋭角に尖ったエッジ状部により、外部からの水分等の弁本体１８内への侵入を防止している。   The lock nut 19 connects the valve body 18 and the holder 17 by being screwed into a male screw portion 18 d formed on the upper side of the valve body 18. An upper end of the valve body 18 is formed with an end 18e having a smaller diameter than the outer diameter, and a recess 17c is formed at the lower end of the holder 17. The valve body 18 and the holder 17 are connected in a state where the end 18 e of the valve body 18 is fitted in the recess 17 c of the holder 17. A rubber packing 23 is disposed between the tip end portion of the end portion 18 e of the valve main body 18 and the bottom surface of the concave portion 17 c of the holder 17. The rubber packing 23 seals between the valve body 18 and the holder 17. Further, the opening peripheral edge portion 17d at the lower end of the holder 17 is formed in an edge shape with a sharp tip at an acute angle to constitute an edge seal. The peripheral edge portion 17d of the holder 17 formed in an edge shape with a sharp tip at its tip is brought into contact with and pressed against the stepped portion 18f of the valve body 18 by tightening the lock nut 19, thereby ensuring a seal. Has been. The rubber packing 23 and the edge-like portion sharpened at the tip of the opening peripheral edge portion 17d constituting the seal portion prevent moisture and the like from entering the valve body 18 from the outside.

弾性体５０は、リング状であり、例えばシリコン系のゴムから形成されている。弾性体５０は、弁本体１８の段差部１８ｆ上に、ホルダ１７の開口周縁部１７ｄの先端が鋭角に尖ったエッジ状部１７１ｄにより押し切られた状態で配置されている。まず、弾性体５０は、図３（ａ）に示すように、弁本体１８の段差部１８ｆに載置される。そして、弾性体５０は、図３（ｂ）に示すように、ロックナット１９を締め付けて、エッジ状部１７１ｄを段差部１８ｆに押し当ててシールを確保する際に、押し切られる。弾性体５０は、ロックナット１９の側面部１９ｂの内壁、弁本体１８の段差部１８ｆ、ホルダ１７の開口周縁部１７ｄの先端が尖ったエッジ状部１７１ｄ等により形成されるロックナット１９内の空間４０内に配置される。   The elastic body 50 has a ring shape and is made of, for example, silicon rubber. The elastic body 50 is disposed on the stepped portion 18f of the valve body 18 in a state where the tip of the opening peripheral edge portion 17d of the holder 17 is pushed off by an edge-shaped portion 171d sharpened at an acute angle. First, as shown in FIG. 3A, the elastic body 50 is placed on the stepped portion 18 f of the valve body 18. Then, as shown in FIG. 3B, the elastic body 50 is pushed out when the lock nut 19 is tightened and the edge-shaped portion 171d is pressed against the stepped portion 18f to ensure a seal. The elastic body 50 is a space in the lock nut 19 formed by the inner wall of the side surface portion 19b of the lock nut 19, the stepped portion 18f of the valve body 18, the edge-shaped portion 171d having a sharp tip of the opening peripheral edge portion 17d of the holder 17, and the like. 40.

弾性体５０は、ロックナット１９内の空間４０に侵入した水分が周囲の温度が低下して氷結した場合でも、水分氷結時の体積膨張分を弾性により吸収して、氷結により生じるホルダ１７のエッジ状部１７１ｄ等に対する圧力を減少させて保護することができるので、ホルダ１７の開口周縁部１７ｄ等が破損、変形することを防止できる。また、弾性体５０は空間４０内に配置されることにより、空間４０の体積を減らして、水分氷結時の体積膨張分を減らすことができる。   The elastic body 50 absorbs the volume expansion at the time of moisture icing by elasticity even when the moisture that has entered the space 40 in the lock nut 19 is frozen due to a decrease in the ambient temperature, and the edge of the holder 17 generated by icing. Since the pressure on the shape portion 171d and the like can be reduced and protected, the opening peripheral edge portion 17d and the like of the holder 17 can be prevented from being damaged or deformed. Further, the elastic body 50 is disposed in the space 40, so that the volume of the space 40 can be reduced and the volume expansion during moisture freezing can be reduced.

この電動弁１０では、モータ３０が正逆方向の例えば正方向に回転すると、弁軸１１が例えば反時計回り方向に回転する。弁軸１１のおねじ部１１２ｂも回転することにより、弁軸１１は例えば上方に移動して、連結する弁体１２も上方に移動する。弁体１２の下方側の第２の弁体１２ｂの尖形状の先端が弁座１８ａから離れることにより、第１の通路１８ｂ及び第２の通路１８ｃを流れる冷媒の流量が増大する。一方、モータ３０が例えば逆方向に回転すると、弁軸１１が時計回り方向に回転する。弁軸１１は下方に移動して、連結する弁体１２も下方に移動する。第２の弁体１２ｂの尖形状の先端が弁座１８ａに近づくことにより、第１の通路１８ｂ及び第２の通路１８ｃを流れる冷媒の流量が減少する。このようにして冷媒の流量を制御する。   In the electric valve 10, when the motor 30 rotates in the forward / reverse direction, for example, the forward direction, the valve shaft 11 rotates, for example, in the counterclockwise direction. By rotating the male threaded portion 112b of the valve shaft 11, the valve shaft 11 moves upward, for example, and the valve body 12 to be connected also moves upward. When the pointed tip of the second valve body 12b on the lower side of the valve body 12 is separated from the valve seat 18a, the flow rate of the refrigerant flowing through the first passage 18b and the second passage 18c increases. On the other hand, when the motor 30 rotates in the reverse direction, for example, the valve shaft 11 rotates in the clockwise direction. The valve shaft 11 moves downward, and the connected valve body 12 also moves downward. As the pointed tip of the second valve body 12b approaches the valve seat 18a, the flow rate of the refrigerant flowing through the first passage 18b and the second passage 18c decreases. In this way, the flow rate of the refrigerant is controlled.

このように本実施の形態の電動弁では、ロックナット１９内の空間４０に侵入した水分が氷結した場合でも、水分氷結時の体積膨張分を弾性体５０により吸収することができるようにしたので、水分氷結時におけるホルダ１７のエッジ状部１７１ｄ等の部品の破損を防止することができる。よって、ロックナット１９と弁本体１８との接合部に接着剤を塗布する等の工数を必要とせずに、水分氷結時における部品の破損、変形を防止することができる。   As described above, in the electric valve according to the present embodiment, even when the moisture that has entered the space 40 in the lock nut 19 freezes, the elastic body 50 can absorb the volume expansion during the moisture freezing. Further, it is possible to prevent damage to parts such as the edge-shaped portion 171d of the holder 17 during moisture freezing. Therefore, it is possible to prevent the parts from being damaged or deformed at the time of moisture freezing without requiring a man-hour such as applying an adhesive to the joint between the lock nut 19 and the valve body 18.

以上、実施形態を挙げて本発明を説明したが、本発明は上記実施形態に限定されるものではなく、種々変形が可能である。例えば、本実施形態では、弁体１２を第１の弁体１２ａ及び第２の弁体１２ｂにより構成する例について説明したが、弁体は一つの部材により構成するようにしてもよい。   The present invention has been described with reference to the embodiment. However, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in this embodiment, although the example which comprises the valve body 12 by the 1st valve body 12a and the 2nd valve body 12b was demonstrated, you may make it comprise a valve body by one member.

また、本実施形態では、弁本体１８に弁座１８ａを一体に形成する例について説明したが、弁座は別体として設けるようにしてもよい。   In the present embodiment, the example in which the valve seat 18a is integrally formed with the valve body 18 has been described. However, the valve seat may be provided as a separate body.

また、本実施形態では、第２の弁軸１１ｂのおねじ部１１２ｂが、ホルダ１７の中央に形成された第１のめねじ部１７ａと螺合することにより、第２の弁軸１１ｂがホルダ１７に回転可能に軸方向に移動可能に保持される例について説明したが、弁軸を軸方向に移動可能にする機構はこれに限られない。   Further, in the present embodiment, the second valve shaft 11b is attached to the holder by the male screw portion 112b of the second valve shaft 11b being screwed with the first female screw portion 17a formed at the center of the holder 17. Although an example in which the valve shaft is rotatably held in the axial direction has been described in FIG. 17, the mechanism that enables the valve shaft to move in the axial direction is not limited thereto.

本発明の実施形態に係る電動弁の概略構成を表す一部断面図である。It is a partial sectional view showing a schematic structure of an electric valve concerning an embodiment of the present invention. 図１に示した電動弁の要部を表す断面図である。It is sectional drawing showing the principal part of the motor operated valve shown in FIG. 図２に示した電動弁の一部拡大図である。FIG. 3 is a partially enlarged view of the electric valve shown in FIG. 2. 従来の電動弁の要部の概略構成を表す一部断面図である。It is a partial cross section showing the schematic structure of the principal part of the conventional motor operated valve.

符号の説明Explanation of symbols

１０ 電動弁
１１ 弁軸
１１ａ 第１の弁軸
１１ｂ 第２の弁軸
１２ 弁体
１２ａ 第１の弁体
１２ｂ 第２の弁体
１６ 出力軸受
１７ ホルダ
１７ｄ 開口周縁部
１７１ｄ エッジ状部
１８ 弁本体
１８ａ 弁座
１８ｂ 第１の通路
１８ｃ 第２の通路
１８１ａ 弁孔
１８ｆ 段差部
１９ ロックナット
１９ｂ 側面部
３０ モータ
４０ 空間
５０ 弾性体 DESCRIPTION OF SYMBOLS 10 Motorized valve 11 Valve shaft 11a 1st valve shaft 11b 2nd valve shaft 12 Valve body 12a 1st valve body 12b 2nd valve body 16 Output bearing 17 Holder 17d Opening peripheral part 171d Edge-shaped part 18 Valve main body 18a Valve seat 18b First passage 18c Second passage 181a Valve hole 18f Step 19 Lock nut 19b Side 30 Motor 40 Space 50 Elastic body

Claims (2)

モータに固定されるホルダと、このホルダにロックナットを介して連結される弁本体と、この弁本体に備わっている弁座の開口と対向するように弁室内に配置されかつ前記モータの作動により前記開口の開閉を操作する弁体とを含み、
該ロックナットと前記ホルダとの間に生成される空間に弾性体を配置し、
前記ホルダには前記弁本体と当接する先端が尖ったエッジシールが備わっており、
前記弾性体は、前記弁本体と前記エッジシールとの間に配置されたことを特徴とする電動弁。 A holder fixed to the motor, a valve main body connected to the holder via a lock nut, and disposed in the valve chamber so as to face an opening of a valve seat provided in the valve main body, and by the operation of the motor A valve body for operating opening and closing of the opening,
An elastic body is arranged in a space generated between the lock nut and the holder ,
The holder has an edge seal with a sharp tip that contacts the valve body,
The motor-operated valve , wherein the elastic body is disposed between the valve body and the edge seal . 一端が前記弁本体に固定されかつ他端が前記弁体に固定されるべローズが備わっていることを特徴とする請求項１に記載の電動弁。 The motor-operated valve according to claim 1 , further comprising a bellows having one end fixed to the valve body and the other end fixed to the valve body.
JP2005079260A 2005-03-18 2005-03-18 Motorized valve Active JP4639102B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2005079260A JP4639102B2 (en) 2005-03-18 2005-03-18 Motorized valve
KR1020060003447A KR101120690B1 (en) 2005-03-18 2006-01-12 Electrically-driven valve
CNA2006100043816A CN1840945A (en) 2005-03-18 2006-01-28 Electrically operated valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005079260A JP4639102B2 (en) 2005-03-18 2005-03-18 Motorized valve

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JP4639102B2 true JP4639102B2 (en) 2011-02-23

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FR3124661A1 (en) * 2021-06-29 2022-12-30 Valeo Equipements Electriques Moteur Together to form a waterproof interconnector

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JP4545627B2 (en) * 2005-04-14 2010-09-15 リンナイ株式会社 Electric water control valve
CN102818068B (en) * 2011-06-08 2016-02-17 浙江三花股份有限公司 The electric expansion valve of a kind of valve body parts and this valve body parts of use
CN106439150A (en) * 2015-08-10 2017-02-22 浙江三花智能控制股份有限公司 Valve shell assembly and valve
KR102316461B1 (en) * 2020-05-14 2021-10-22 그린산업 주식회사 Air-tight fixing structure of poppet valve for electronic expansion valve and electronic expansion valve comprising the same

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JP2002071041A (en) * 2000-08-30 2002-03-08 Rinnai Corp Preventive mechanism for water cock from freeze damage

Cited By (1)

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Publication number Priority date Publication date Assignee Title
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JP2006258245A (en) 2006-09-28
KR20060101212A (en) 2006-09-22
CN1840945A (en) 2006-10-04

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