JP2007107623A - Motor operated valve - Google Patents

Motor operated valve Download PDF

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Publication number
JP2007107623A
JP2007107623A JP2005299654A JP2005299654A JP2007107623A JP 2007107623 A JP2007107623 A JP 2007107623A JP 2005299654 A JP2005299654 A JP 2005299654A JP 2005299654 A JP2005299654 A JP 2005299654A JP 2007107623 A JP2007107623 A JP 2007107623A
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pipe
motor
refrigerant
operated valve
thin plate
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JP2005299654A
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JP4925638B2 (en
Inventor
Yusuke Arai
裕介 荒井
Takao Harada
貴雄 原田
Hitoshi Umezawa
仁志 梅澤
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Fujikoki Corp
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Fujikoki Corp
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Priority to JP2005299654A priority Critical patent/JP4925638B2/en
Priority to KR1020060075958A priority patent/KR101294381B1/en
Priority to CN2006101359040A priority patent/CN1948795B/en
Publication of JP2007107623A publication Critical patent/JP2007107623A/en
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    • 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
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
    • F16K47/14—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths the throttling member being a perforated membrane
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound

Abstract

<P>PROBLEM TO BE SOLVED: To reduce refrigerant passing sound in a motor operated valve controlling a flow rate of refrigerant. <P>SOLUTION: A perforated sheet member (a punching plate) 100 composing a restrictor means S<SB>1</SB>has a cylinder part 120, and a bottom 130 provided with a multiplicity of small holes 150 exercising a restrictor function and a bubble fragmenting function. A flange part 110 is formed on an upper end of the cylinder part 120, the flange part 110 is held between a tip of a pipe 50 and a body 10, and the restrictor means S<SB>1</SB>is attached by fixing the pipe 50. A restrictor means S<SB>2</SB>is also provided on an attachment part of a pipe 52. In the restrictor means S<SB>2</SB>, an extension part 41 intruding into an inner diameter side of the pipe 52 is formed integrally with the body 10, and a hole 42 for carrying out restrictor action is provided in the extension part. The restrictor means S<SB>1</SB>, S<SB>2</SB>are attached to attachment parts of the pipes 50, 52, and its composition is simple, but the refrigerant passing sound caused by bubbles in the refrigerant is effectively reduced even when the refrigerant is flowing in either normal or reverse direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、冷媒サイクル等に使用されて冷媒の流量を全閉から全開まで連続的に制御する電動弁に関する。   The present invention relates to a motor-operated valve that is used in a refrigerant cycle or the like and continuously controls the flow rate of a refrigerant from fully closed to fully open.

冷媒の流量を制御する電動弁にあっては、冷媒が弁室を通過する際に流動音を発生させる。弁体が装備されている弁室内に流入する冷媒は、液相冷媒中に気相冷媒が混入される２相流状態が起こる。気相冷媒中に大きな気泡が存在すると、弁室内を通過する際に衝突音を発生し、騒音の原因となる。このような冷媒通過音を低減するために、従来より種々の工夫と提案がなされている（例えば、特許文献１〜３）。
特開２００１−２８９５３８号公報 特開２００３−０９７７５４号公報 特開２００５−０５５１１９号公報 In the electric valve that controls the flow rate of the refrigerant, a flow noise is generated when the refrigerant passes through the valve chamber. The refrigerant flowing into the valve chamber equipped with the valve body has a two-phase flow state in which the gas-phase refrigerant is mixed into the liquid-phase refrigerant. If large bubbles are present in the gas-phase refrigerant, a collision noise is generated when passing through the valve chamber, which causes noise. In order to reduce such refrigerant passing sound, various devices and proposals have been conventionally made (for example, Patent Documents 1 to 3).
JP 2001-289538 A JP 2003-097754 A JP 2005-055119 A

しかし、従来の公知構造のものは、構成が複雑化してコストアップを招来していた。また、冷媒は正方向にも逆方向に流される場合があるが、従来の公知構造のものでは、冷媒が正逆いずれに流れる場合であっても冷媒通過音を効果的に低減することができるものではなかった。
本発明の目的は、冷媒が正逆いずれに流れる場合であっても冷媒通過音を効果的に低減することができる電動弁を低コストで提供することにある。 However, the conventional known structure has a complicated structure and causes an increase in cost. In addition, the refrigerant may flow in both the forward direction and the reverse direction. However, with the conventional structure, the refrigerant passing sound can be effectively reduced regardless of whether the refrigerant flows in the forward or reverse direction. It was not a thing.
An object of the present invention is to provide a motor-operated valve that can effectively reduce refrigerant passing sound at a low cost regardless of whether the refrigerant flows forward or backward.

上記目的を達成するために、本発明の電動弁は、弁室と弁室の軸線方向に形成されるオリフィスとを有する本体と、弁室に移動可能に前記オリフィスと対向して配設される弁体と、弁体をオリフィスに対して離接する電動手段と、本体に対し互いに直交する方向に設けられる１対のパイプを備えるとともに、オリフィス及び弁体に対して上流側と下流側の両方に、所定の開口率を有する絞り手段を配置してある。
この絞り手段は、好ましくは、パイプの弁本体に対する取付部に設けられる。
絞り手段の開口率は、更に好ましくは、パイプの内径面積に対して１０〜３５％に設定される。
また、この絞り手段の開口面積は、オリフィスの開口面積の１．２〜２．４倍に設定されることもある。
更に好ましくは、絞り手段の少なくとも一方は、パイプの内径側へ侵入するように弁本体から一体に延出形成される。
絞り手段の少なくとも一方は、更に好ましくは、孔つき薄板部材とされる。
該孔つき薄板部材としては、パンチングプレス加工により孔を形成したパンチングメタルが好適である。このとき、該孔つき薄板部材は、パイプの端部と本体と間で挟持固定するのが簡便である。また、該孔つき薄板部材は、パイプに施したポンチ加工又はロール加工により固定するようにすることも可能である。 In order to achieve the above object, the motor-operated valve of the present invention is provided with a main body having a valve chamber and an orifice formed in the axial direction of the valve chamber, and is disposed to face the orifice so as to be movable in the valve chamber. A valve body, electric means for separating the valve body from the orifice, and a pair of pipes provided in directions orthogonal to the main body, and both upstream and downstream of the orifice and the valve body A diaphragm means having a predetermined aperture ratio is arranged.
This throttling means is preferably provided at the attachment portion of the pipe to the valve body.
More preferably, the aperture ratio of the throttle means is set to 10 to 35% with respect to the inner diameter area of the pipe.
Further, the opening area of the throttling means may be set to 1.2 to 2.4 times the opening area of the orifice.
More preferably, at least one of the throttle means is integrally extended from the valve body so as to enter the inner diameter side of the pipe.
At least one of the throttling means is more preferably a thin plate member with a hole.
As the thin plate member with holes, a punching metal having holes formed by punching press processing is suitable. At this time, it is easy to sandwich and fix the thin plate member with a hole between the end portion of the pipe and the main body. In addition, the thin plate member with holes can be fixed by punching or roll processing applied to the pipe.

本発明は以上の構成を備えることにより、冷媒が正逆いずれに流れる場合であっても気泡に起因する冷媒通過音を効果的に低減可能な電動弁を低コストで提供できる。   By providing the above-described configuration, the present invention can provide a motor-operated valve that can effectively reduce refrigerant passage noise caused by bubbles even when the refrigerant flows forward or backward.

図１に示す第１実施例の電動弁は、円筒形状の本体１０を有し、弁室２０が設けられる。弁室２０には、本体１０の軸線上に設けられる冷媒の第１の通路３０と、本体１０の半径方向に設けられる冷媒の第２の通路４０とが互いに直交する方向に設けられる。そして、本体１０の第１の通路３０及び第２の通路４０に通ずる開口部１１，１２には、配管接続用の縦パイプ５０と横パイプ５２の先端が挿入され、ろう付け等の接合手段Ｗ１により固着される。 The motor-operated valve of the first embodiment shown in FIG. 1 has a cylindrical main body 10 and is provided with a valve chamber 20. In the valve chamber 20, a refrigerant first passage 30 provided on the axis of the main body 10 and a refrigerant second passage 40 provided in the radial direction of the main body 10 are provided in directions orthogonal to each other. The ends of the vertical pipe 50 and the horizontal pipe 52 for connecting pipes are inserted into the openings 11 and 12 communicating with the first passage 30 and the second passage 40 of the main body 10, and joining means W such as brazing. It is secured by one.

第１の通路３０は、オリフィス３２を介して弁室２０に連通し、オリフィス３２の弁室２０側には弁座３４が形成される。第２の通路４０も穴４２を介して弁室２０に連通する。穴４２の径寸法は電動弁の容量に応じて決定される。
弁室２０に挿入される弁体８０は、弁軸６０に連結され、弁軸６０は、図示しないモータ、歯車減速装置、ねじ機構等により上下方向に駆動される。
弁体８０の上下動により、先端のニードル部８２と弁座３４との間の流路面積が変化し、通過する冷媒の流量が制御される。
弁軸６０の外側にはベローズ７０が取り付けてあり、モータ側への冷媒の侵入を防止している。 The first passage 30 communicates with the valve chamber 20 via an orifice 32, and a valve seat 34 is formed on the valve chamber 20 side of the orifice 32. The second passage 40 also communicates with the valve chamber 20 through the hole 42. The diameter of the hole 42 is determined according to the capacity of the motor-operated valve.
The valve body 80 inserted into the valve chamber 20 is connected to a valve shaft 60, and the valve shaft 60 is driven in the vertical direction by a motor, a gear reduction device, a screw mechanism, or the like (not shown).
By the vertical movement of the valve body 80, the flow path area between the needle portion 82 at the tip and the valve seat 34 changes, and the flow rate of the refrigerant passing therethrough is controlled.
A bellows 70 is attached to the outside of the valve shaft 60 to prevent the refrigerant from entering the motor side.

電動弁に流入する冷媒は、液相冷媒中に気相冷媒が泡沫として混入することがある。この気液混合冷媒が電動弁を通過する際に騒音の原因となる。騒音の主な要因は、気相冷媒の泡沫の存在であることが判明しており、特に大きな泡沫の存在が問題となる。   As for the refrigerant flowing into the motor-operated valve, the gas-phase refrigerant may be mixed in the liquid-phase refrigerant as foam. When this gas-liquid mixed refrigerant passes through the motor-operated valve, it causes noise. It has been found that the main cause of noise is the presence of gas-phase refrigerant foam, and particularly the presence of large foam is a problem.

本発明の電動弁にあっては、冷媒が正逆いずれに流れる場合であっても気泡に起因する冷媒通過音を効果的に低減することができるように、オリフィス３２及びこれと対向接離する弁体８０に対して上流側と下流側の両方において、パイプ５０、５２の本体８０に対する取付部位置において、所定の開口率を有する絞り手段Ｓ１、Ｓ２が配置してある。 In the motor-operated valve of the present invention, the orifice 32 is opposed to and separated from the orifice 32 so that the refrigerant passing sound due to the bubbles can be effectively reduced regardless of whether the refrigerant flows forward or backward. On both the upstream side and the downstream side with respect to the valve body 80, throttle means S 1 and S 2 having a predetermined opening ratio are arranged at the positions of the attachment portions of the pipes 50 and 52 with respect to the main body 80.

絞り手段Ｓ１を構成する孔つき薄板部材（パンチングプレート）１００は、絞り・パンチングプレス加工により形成されてなるものであって、この実施例においては、円筒部１２０と底部１３０を有するカップ形状（筒状）に形成され、円筒部１２０の上端にはフランジ部１１０が形成される。このフランジ部１１０をパイプ５０の先端部と本体１０の開口部１１の間で挟み込み、パイプ５０を固着することで孔つき薄板部材１００は取り付けられる。薄板部材１００の底部１３０には、冷媒の絞り通路となる複数の小孔１５０がパンチングプレス加工により設けられる。小孔１５０を備えた薄板部材１００は、かかる構成によって、これを通過する冷媒の整流機能及び絞り機能並びに二相流状態の冷媒中の気泡を細分化する機能を兼ね備える。 Holes with thin plate (punching plate) 100 of the throttle means S 1 is be comprised formed by drawing and punching press processing, in this embodiment, a cup shape having a cylindrical portion 120 and the bottom 130 ( The flange portion 110 is formed at the upper end of the cylindrical portion 120. The thin plate member 100 with holes is attached by sandwiching the flange portion 110 between the tip portion of the pipe 50 and the opening portion 11 of the main body 10 and fixing the pipe 50. A plurality of small holes 150 serving as refrigerant constricting passages are provided in the bottom portion 130 of the thin plate member 100 by punching press processing. With such a configuration, the thin plate member 100 including the small holes 150 has a function of rectifying and throttling the refrigerant passing therethrough and a function of subdividing bubbles in the refrigerant in a two-phase flow state.

もう一つの絞り手段Ｓ２は、横パイプ５２の取付部に設けられる。すなわち、パイプ５２の内径側に侵入する延伸部４１が本体１０と一体に形成され、この延伸部４１によって絞り作用をなす穴４２が区画形成されている。該絞り手段Ｓ２つまり絞り穴４２は、これを通過する冷媒の絞り機能と二相流状態の冷媒中の気泡を細分化する機能を兼ね備える。 Another throttling means S 2 is provided at the attachment portion of the horizontal pipe 52. That is, the extending portion 41 that enters the inner diameter side of the pipe 52 is formed integrally with the main body 10, and a hole 42 that performs a squeezing action is defined by the extending portion 41. Restrictor means S 2, that throttle hole 42 has both a function for subdividing bubbles in refrigerant diaphragm function and two-phase flow state of the refrigerant passing therethrough.

絞り手段Ｓ１、Ｓ２は、冷媒が正逆いずれの方向に流れるときでも、つまり冷媒がパイプ５０側から流入するときも、反対にパイプ５２側から流入するときも、いずれも効果的に冷媒通過音を低減できるようにするために、その開口率はパイプ内径面積に対し１０〜３５％が適切である。 The throttling means S 1 and S 2 are effective when the refrigerant flows in either forward or reverse direction, that is, when the refrigerant flows in from the pipe 50 side or vice versa. In order to reduce the passing sound, the aperture ratio is suitably 10 to 35% with respect to the pipe inner diameter area.

また、絞り手段Ｓ１、Ｓ２は、冷媒が正逆いずれの方向に流れるときでも、つまり冷媒がパイプ５０側から流入するときも、反対にパイプ５２側から流入するときも、いずれも効果的に冷媒通過音を低減できるようにするためには、その開口率は、オリフィス３２に対して１．２〜２．４倍の範囲が好適である。 The diaphragm means S 1, S 2, even when the refrigerant flows in the positive or reverse direction, that is, even when the refrigerant flows from the pipe 50 side, even when flowing from the pipe 52 side to the opposite, any effective In order to reduce the refrigerant passing noise, the opening ratio is preferably 1.2 to 2.4 times that of the orifice 32.

図２は、本発明の第２実施例に係る電動弁の要部の断面図である。図１で説明した電動弁と同様の構成を備える部材に対しては同一の符号を付して説明は省略する。
本実施例の電動弁に装備される孔つき薄板部材１００Ａは、円筒部１２０と底部１３０を有するカップ形状のもので、フランジ部を備えない。この薄板部材１００Ａは、パイプ５０に挿入され、ポンチ加工又はロール加工Ｋ１により固定される。 FIG. 2 is a cross-sectional view of the main part of the motor-operated valve according to the second embodiment of the present invention. Members having the same configuration as the motor-operated valve described in FIG. 1 are denoted by the same reference numerals and description thereof is omitted.
The plate member 100A with a hole provided in the electric valve of the present embodiment is a cup-shaped member having a cylindrical portion 120 and a bottom portion 130, and does not include a flange portion. The thin plate member 100A is inserted into the pipe 50 is fixed by punching or rolling K 1.

上記第１実施例及び第２実施例における孔つき薄板部材１００、１００Ａは、いずれも絞り加工をともなったカップ形状（筒状）に形成されているが、絞り加工をすることなく単純な平板状であっても同等の作用効果を奏する。   The thin plate members 100 and 100A with holes in the first and second embodiments are each formed in a cup shape (cylindrical shape) with drawing, but a simple flat plate shape without drawing. Even so, the same effects can be achieved.

図３（ａ）〜（ｆ）は、絞り手段Ｓ１たる孔つき薄板部材の種々の形態を示す。
薄板部材１００ａは、多数の小孔１５０ａを均等分散するように配置した例である。
薄板部材１００ｂは、放射状のスリットからなる単一孔１５０ｂとした例である。
薄板部材１００ｃは、中心に位置する大径の孔１５０ｃ１とその回りに同心円上に配置した多数の小径の孔１５０ｃ２とを組み合わせた例である。
薄板部材１００ｄは、外周部の近くに複数の半円状の孔１５０ｄを同心円状に配置した例である。
薄板部材１００ｅは、３個の中程度の孔１５０ｅを等中心角をもって配置した例である。
薄板部材１００ｆは、２個の孔１５０ｆを対向的に配置した例である。 Figure 3 (a) ~ (f) show various forms of stop means S 1 serving hole with thin plate.
The thin plate member 100a is an example in which a large number of small holes 150a are arranged so as to be evenly dispersed.
The thin plate member 100b is an example of a single hole 150b made of a radial slit.
The thin plate member 100c is an example in which a large-diameter hole 150c1 positioned at the center and a large number of small-diameter holes 150c2 arranged concentrically around the hole 150c1 are combined.
The thin plate member 100d is an example in which a plurality of semicircular holes 150d are arranged concentrically near the outer periphery.
The thin plate member 100e is an example in which three medium holes 150e are arranged with equal central angles.
The thin plate member 100f is an example in which two holes 150f are arranged to face each other.

絞り手段Ｓ１たる薄板部材における孔の大きさ・個数・形状は、電動弁が使用される運転条件や使用環境に対応して、上記した開口率の条件の範囲で適宜に設定される。 The size, number, and shape of the holes in the thin plate member that is the throttle means S 1 are appropriately set within the range of the aperture ratio conditions described above in accordance with the operating conditions and usage environment in which the motor-operated valve is used.

以上のような構成を有する本発明に係わる電動弁によれば、冷媒がパイプ５０からパイプ５２へ流れるときは絞り手段Ｓ１が、逆に冷媒パイプ５２からパイプ５０へ流れるときは絞り手段Ｓ２が、二相流状態で通過する冷媒の整流機能、絞り機能、二相流状態の冷媒中の気泡を細分化する機能を発揮し、簡素な構成を追加するだけで、冷媒が正逆いずれの方向に流れるときでも気泡に起因する冷媒通過音を効果的に低減させることができる。 According to the motor-operated valve according to the present invention having the above-described configuration, the throttle means S 1 when the refrigerant flows from the pipe 50 to the pipe 52, and conversely, the throttle means S 2 when the refrigerant flows from the refrigerant pipe 52 to the pipe 50. However, the function of rectifying and throttling the refrigerant that passes in the two-phase flow state, the function of subdividing the bubbles in the refrigerant in the two-phase flow state, and the function to subdivide the bubbles in the two-phase flow state. Even when flowing in the direction, it is possible to effectively reduce the refrigerant passing sound caused by the bubbles.

本発明に係わる電動弁の好適な一実施形態の要部の断面図。Sectional drawing of the principal part of suitable one Embodiment of the motor operated valve concerning this invention. 本発明の他の実施形態に係る電動弁の要部の断面図。Sectional drawing of the principal part of the motor operated valve which concerns on other embodiment of this invention. 絞り手段Ｓ１の種々の孔形状を示す説明図。Diagram showing various hole shapes of the stop means S 1.

符号の説明Explanation of symbols

１０ 本体
２０ 弁室
３２ オリフィス
４１ 延伸部
４２ 絞り穴
５０ パイプ
５２ パイプ
８０ 弁体
１００、１００Ａ 孔つき薄板部材
１５０、１５０ａ〜１５０ｆ 孔 DESCRIPTION OF SYMBOLS 10 Main body 20 Valve chamber 32 Orifice 41 Extending part 42 Restriction hole 50 Pipe 52 Pipe 80 Valve body 100, 100A Thin plate member with holes 150, 150a to 150f Holes

Claims (9)

弁室と弁室の軸線方向に形成されるオリフィスとを有する本体と、弁室に移動可能に前記オリフィスと対向して配設される弁体と、前記弁体を前記オリフィスに対して離接する電動手段と、前記本体に対し互いに直交する方向に設けられる１対のパイプを備える電動弁であって、
前記オリフィス及び前記弁体に対して上流側と下流側の両方に、所定の開口率を有する絞り手段を配置した
ことを特徴とする電動弁。 A main body having a valve chamber and an orifice formed in the axial direction of the valve chamber, a valve body disposed to face the orifice so as to be movable in the valve chamber, and the valve body being separated from the orifice An electric valve comprising an electric means and a pair of pipes provided in directions orthogonal to each other with respect to the main body,
A motor-operated valve characterized in that throttle means having a predetermined opening ratio is arranged on both the upstream side and the downstream side with respect to the orifice and the valve body. 前記絞り手段は、前記パイプの前記本体に対する取付部に設けられる請求項１記載の電動弁。   The motor-operated valve according to claim 1, wherein the throttle means is provided in a mounting portion of the pipe with respect to the main body. 前記絞り手段の開口率は、パイプの内径面積に対して１０〜３５％に設定される請求項１又は２記載の電動弁。   The motor-operated valve according to claim 1 or 2, wherein an aperture ratio of the throttle means is set to 10 to 35% with respect to an inner diameter area of the pipe. 前記絞り手段の開口面積は、前記オリフィスの開口面積の１．２〜２．４倍に設定される請求項１又は２記載の電動弁。   The motor-operated valve according to claim 1 or 2, wherein an opening area of the throttle means is set to 1.2 to 2.4 times an opening area of the orifice. 前記絞り手段の少なくとも一方は、前記パイプの内径側へ侵入するように前記本体から一体に延出形成される請求項１乃至４のいずれかに記載の電動弁。   5. The motor-operated valve according to claim 1, wherein at least one of the throttle means is integrally extended from the main body so as to enter the inner diameter side of the pipe. 前記絞り手段の少なくとも一方は、孔つき薄板部材である請求項１乃至４のいずれかに記載の電動弁。   The motor operated valve according to any one of claims 1 to 4, wherein at least one of the throttle means is a thin plate member with a hole. 前記孔つき薄板部材は、パンチングプレス加工により小孔を形成したパンチングメタルである請求項６記載の電動弁。   The motor-operated valve according to claim 6, wherein the thin plate member with holes is a punching metal in which small holes are formed by punching press processing. 前記孔つき薄板部材は、パイプの端部と弁本体に挟まれて固定される請求項６又は７記載の電動弁。   The motor-operated valve according to claim 6 or 7, wherein the thin plate member with a hole is fixed by being sandwiched between an end portion of a pipe and a valve body. 前記孔つき薄板部材は、パイプに施したポンチ加工又はロール加工により固定される請求項６乃至８のいずれかに記載の電動弁。
The motor-operated valve according to any one of claims 6 to 8, wherein the thin plate member with holes is fixed by punching or roll processing applied to a pipe.
JP2005299654A 2005-10-14 2005-10-14 Motorized valve Active JP4925638B2 (en)

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KR101294381B1 (en) 2013-08-08

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