JP2007198423A - Shutoff valve and air conditioner - Google Patents

Shutoff valve and air conditioner Download PDF

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Publication number
JP2007198423A
JP2007198423A JP2006014894A JP2006014894A JP2007198423A JP 2007198423 A JP2007198423 A JP 2007198423A JP 2006014894 A JP2006014894 A JP 2006014894A JP 2006014894 A JP2006014894 A JP 2006014894A JP 2007198423 A JP2007198423 A JP 2007198423A
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Prior art keywords
valve
valve body
housing
closing
closing valve
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JP2006014894A
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Japanese (ja)
Inventor
Koji Shibaike
幸治 芝池
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Daikin Industries Ltd
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Daikin Industries Ltd
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Priority to JP2006014894A priority Critical patent/JP2007198423A/en
Priority to CNA2007800021148A priority patent/CN101365901A/en
Priority to PCT/JP2007/050583 priority patent/WO2007086290A1/en
Priority to KR1020087016440A priority patent/KR20080086878A/en
Publication of JP2007198423A publication Critical patent/JP2007198423A/en
Pending legal-status Critical Current

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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
    • F16K1/04—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle with a cut-off member rigid with the spindle, e.g. main 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • 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
    • 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
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lift Valve (AREA)
  • Valve Housings (AREA)
  • Sliding Valves (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shutoff valve and air conditioner capable of reducing costs at a simple structure. <P>SOLUTION: The shutoff valve comprises a valve chamber 1a interconnected with an inlet 3 and outlet 4, a metal housing 1 having a valve seat 5 arranged on the valve chamber 1a, and a resin valve body 2 which is movably arranged in the valve chamber 1a of the housing 1 and has an abutting section 21 which can separate and keeps in contact with the valve seat 5. An O-ring 26 arranged on the outer periphery of the valve body 2 seals between the valve body 2 and housing 1. The seal section 26 is made of a material different from the valve body 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、閉鎖弁および空気調和機に関する。   The present invention relates to a closing valve and an air conditioner.

従来、閉鎖弁としては、圧縮機と室外熱交換器と減圧手段および室内熱交換器が順に環状に接続された冷媒回路において、減圧手段と室内熱交換器との間および室内熱交換器と圧縮機との間の冷媒配管に配設されたものがある(例えば、特開２００４−１３２４９８号公報(特許文献１)参照)。   Conventionally, as a shut-off valve, in a refrigerant circuit in which a compressor, an outdoor heat exchanger, a pressure reducing means, and an indoor heat exchanger are sequentially connected in an annular manner, the pressure is reduced between the pressure reducing means and the indoor heat exchanger, and the indoor heat exchanger is compressed. Some of them are arranged in a refrigerant pipe between the machines (for example, see Japanese Patent Application Laid-Open No. 2004-132498 (Patent Document 1)).

この閉鎖弁では、図６に示すように、入口１０３および出口１０４に連通する弁室１０１aに弁座１０５が設けられた金属製のハウジング１０１と、そのハウジング１０１の弁室１０１a内に移動可能に設けられた金属製の弁体１０２とを備えている。上記弁体１０２の移動により弁体１０２の当接部が弁座１０５に接離する。   In this closing valve, as shown in FIG. 6, a metal housing 101 in which a valve seat 105 is provided in a valve chamber 101 a communicating with an inlet 103 and an outlet 104, and movement into the valve chamber 101 a of the housing 101 is possible. And a metal valve body 102 provided. As the valve body 102 moves, the contact portion of the valve body 102 contacts and separates from the valve seat 105.

上記閉鎖弁の金属製の弁体１０２は、ねじ加工、Ｏリング取り付け構造の加工、六角穴の加工、および、当接部の表面加工を行う必要があるため、製造工程が複雑でコストが高くつくという問題がある。
特開２００４−１３２４９８号公報 The metal valve body 102 of the above-mentioned closing valve needs to perform screw processing, processing of an O-ring mounting structure, processing of a hexagonal hole, and surface processing of an abutting portion, so that the manufacturing process is complicated and expensive. There is a problem of sticking.
JP 2004-132498 A

そこで、この発明の課題は、簡単な構成でコストを低減できる閉鎖弁および空気調和機を提供することにある。   Accordingly, an object of the present invention is to provide a shut-off valve and an air conditioner that can reduce the cost with a simple configuration.

上記課題を解決するため、この発明の閉鎖弁は、
入口と、出口と、この入口および出口に連通する弁室と、上記弁室に設けられた弁座とを有する金属製のハウジングと、
上記ハウジングの弁室内に移動可能に設けられて、上記弁座に接離する当接部を有する樹脂製の弁体と
を備えたことを特徴とする。 In order to solve the above problems, the closing valve of the present invention is:
A metal housing having an inlet, an outlet, a valve chamber communicating with the inlet and the outlet, and a valve seat provided in the valve chamber;
And a resin valve body having a contact portion that is movably provided in the valve chamber of the housing and contacts and separates from the valve seat.

上記構成の閉鎖弁によれば、樹脂製の弁体を成型により製造することができ、複雑な加工を省略することによって、簡単な構成でコストを低減できる。また、樹脂製の弁体の当接部とハウジングの弁座との間のシール性も向上できる。   According to the closing valve having the above configuration, a resin valve body can be manufactured by molding, and the cost can be reduced with a simple configuration by omitting complicated processing. Moreover, the sealing performance between the contact portion of the resin valve body and the valve seat of the housing can be improved.

また、一実施形態の閉鎖弁は、
上記弁体と上記ハウジングとの間をシールするシール部を備え、
上記シール部が上記弁体の材料と異なる材料である。 In one embodiment, the closing valve is
A seal portion for sealing between the valve body and the housing;
The seal portion is made of a material different from that of the valve body.

上記実施形態の閉鎖弁によれば、上記シール部が弁体の材料と異なる材料からなるシール部により、弁体とハウジングとの間をシールすることによって、弁体の材料に関わらず、シール部にシール性のよい材料を選択することができる。これにより、シール性をさらに向上できる。なお、このシール部は、弁体側に設けられたＯリングであってもよいし、ハウジング側に設けられたものであってもよい。   According to the closing valve of the above embodiment, the seal portion is sealed between the valve body and the housing by the seal portion made of a material different from the material of the valve body, so that the seal portion regardless of the material of the valve body. A material having a good sealing property can be selected. Thereby, a sealing performance can further be improved. The seal portion may be an O-ring provided on the valve body side or may be provided on the housing side.

また、一実施形態の閉鎖弁は、上記弁体が、上記弁体と上記ハウジングとの間をシールするシール部と一体に形成されている。   In one embodiment, the valve body is formed integrally with a seal portion that seals between the valve body and the housing.

上記実施形態の閉鎖弁によれば、上記弁体とハウジングとの間をシールするシール部を、成型により弁体と一体に形成することによって、別体のＯリングを弁体に装着する必要がなくなるので、コストをさらに低減できる。このシール部は、異なる材料の弁体とシール部を二色成形等により一体に形成してもよい。   According to the closing valve of the above-described embodiment, it is necessary to attach a separate O-ring to the valve body by forming a seal portion for sealing between the valve body and the housing integrally with the valve body by molding. The cost can be further reduced because it is eliminated. In this seal portion, a valve body and a seal portion of different materials may be integrally formed by two-color molding or the like.

また、一実施形態の閉鎖弁は、上記弁体が収納された上記ハウジングの収納部が、上記弁体が挿入された開口にしぼり部が設けられている。   Further, in the closing valve of one embodiment, the housing portion in which the valve body is housed is provided with a squeezed portion in the opening into which the valve body is inserted.

上記実施形態の閉鎖弁によれば、上記弁体が収納されたハウジングの収納部に、製造時に弁体を挿入するための開口を有し、その開口に弁体の飛び出しを防ぐためのしぼり部が設けられている構成では、弁体を樹脂にすることにより全体の剛性を下げて、製造工程において収納部の開口部分のかしめを容易に行うことができる。   According to the closing valve of the above embodiment, the housing portion in which the valve body is housed has an opening for inserting the valve body at the time of manufacture, and the aperture portion for preventing the valve body from popping out at the opening. In the configuration in which the valve body is made of resin, the overall rigidity is lowered, and the opening portion of the storage portion can be easily caulked in the manufacturing process.

また、この発明の空気調和機は、上記のいずれか１つの閉鎖弁を冷媒配管に配設したことを特徴とする。   Moreover, the air conditioner of this invention has arrange | positioned any one said closing valve to refrigerant | coolant piping.

上記構成の空気調和機によれば、上記のいずれか１つの閉鎖弁を冷媒配管に配設することによって、簡単な構成でコストを低減できる。   According to the air conditioner having the above configuration, the cost can be reduced with a simple configuration by disposing any one of the above-described closing valves in the refrigerant pipe.

以上より明らかなように、この発明の閉鎖弁によれば、低コストでかつシール性のよい閉鎖弁を実現することができる。   As is clear from the above, according to the closing valve of the present invention, it is possible to realize a closing valve with low cost and good sealing performance.

また、一実施形態の閉鎖弁によれば、上記弁体とハウジングとの間をシールするシール部に、弁体の材料と異なる材料を用いることによって、弁体の材料によらず、シール部にシール性のよい材料を選択することができ、シール性をさらに向上できる。   Moreover, according to the closing valve of one embodiment, by using a material different from the material of the valve body for the seal part that seals between the valve body and the housing, the seal part is used regardless of the material of the valve body. A material having a good sealing property can be selected, and the sealing property can be further improved.

また、一実施形態の閉鎖弁によれば、上記弁体とハウジングとの間をシールするシール部を、成型により弁体と一体に形成することによって、別に用意したＯリング等を弁体に装着する必要がなくなるので、コストをさらに低減することができる。   Further, according to the closing valve of one embodiment, a seal portion for sealing between the valve body and the housing is formed integrally with the valve body by molding, so that a separately prepared O-ring or the like is attached to the valve body. Therefore, the cost can be further reduced.

また、一実施形態の閉鎖弁によれば、上記弁体が収納されたハウジングの収納部の開口にしぼり部が設けられた構造において、弁体を樹脂にすることによって、全体の剛性を下げることができ、製造工程において収納部の開口部分のかしめを容易に行うことができる。   Further, according to the closing valve of one embodiment, in the structure in which the squeezed portion is provided in the opening of the housing portion in which the valve body is housed, the overall rigidity is lowered by using the valve body as a resin. And the caulking of the opening portion of the storage portion can be easily performed in the manufacturing process.

また、この発明の空気調和機によれば、上記のいずれか１つの閉鎖弁を冷媒配管に配設することによって、低コストな空気調和機を実現することができる。   Moreover, according to the air conditioner of this invention, a low-cost air conditioner can be realized by disposing any one of the above-described closing valves on the refrigerant pipe.

以下、この発明の閉鎖弁およびそれを用いた空気調和機を図示の実施の形態により詳細に説明する。   Hereinafter, the closing valve of the present invention and an air conditioner using the same will be described in detail with reference to the illustrated embodiments.

（第１実施形態）
図１はこの発明の第１実施形態の閉鎖弁の断面図であり、１は金属製のハウジング、２は上記ハウジング１内に移動可能に設けられた樹脂製の弁体である。ここで、弁体２に用いる樹脂として、冷媒や冷凍機油に対して耐性を有する材料(例えば、６６ナイロンやＰＰＳ(ポリフェニレンサルファイド)等)を用いる。 (First embodiment)
FIG. 1 is a cross-sectional view of a closing valve according to a first embodiment of the present invention, wherein 1 is a metal housing, and 2 is a resin valve body movably provided in the housing 1. Here, as the resin used for the valve body 2, a material (for example, 66 nylon, PPS (polyphenylene sulfide), or the like) having resistance to refrigerant or refrigerating machine oil is used.

上記ハウジング１は、入口３と、出口４と、入口３と出口４に連通する弁室１aを有し、入口３と出口４とを接続する断面Ｌ字状に屈曲した流体通路１０を形成している。上記ハウジング１の流体通路１０の屈曲部に弁座５を形成している。上記弁体２が移動して、弁体２の当接部２１が弁座５に接離する。   The housing 1 has an inlet 3, an outlet 4, a valve chamber 1 a communicating with the inlet 3 and the outlet 4, and forms a fluid passage 10 bent in an L-shaped cross section that connects the inlet 3 and the outlet 4. ing. A valve seat 5 is formed at a bent portion of the fluid passage 10 of the housing 1. The valve body 2 moves and the contact portion 21 of the valve body 2 contacts and separates from the valve seat 5.

また、上記弁体２は、ハウジング１と螺合するねじ部２８と、六角レンチを挿入する六角穴２７と、上記ハウジング１の弁座５と密着してハウジング１と弁体２との間をシールするテーパ面２１aを有する当接部２１と、ハウジング１と弁体２との間の隙間から冷媒等が外部に漏れるのを防止するシール部の一例としてのＯリング２６とを備えている。   In addition, the valve body 2 is in close contact with the valve seat 5 of the housing 1 between the housing 1 and the valve body 2 in close contact with the screw portion 28 screwed into the housing 1, the hexagon hole 27 into which the hexagon wrench is inserted, and the valve seat 5 of the housing 1. A contact portion 21 having a tapered surface 21a to be sealed and an O-ring 26 as an example of a seal portion for preventing refrigerant or the like from leaking to the outside through a gap between the housing 1 and the valve body 2 are provided.

また、上記ハウジング１の入口３側にフレアナット７を締め付けて、入口３を蓋するキャップ６を固定している。また、上記ハウジング１の出口４と反対の側に弁蓋８を締め付けて、収納部１bの開口を蓋している。上記ハウジング１の収納部１bの開口に、収納部１bの内径よりも内径の小さいしぼり部１１を設けている。   A cap 6 that covers the inlet 3 is fixed by tightening a flare nut 7 on the inlet 3 side of the housing 1. Further, a valve lid 8 is tightened on the side of the housing 1 opposite to the outlet 4 to cover the opening of the storage portion 1b. A squeezed portion 11 having an inner diameter smaller than the inner diameter of the storage portion 1b is provided in the opening of the storage portion 1b of the housing 1.

図１に示す閉鎖弁では、弁体２が弁蓋８側に移動して、入口３と出口４とが流体通路１０を介して連通する開放状態を示している。   In the closing valve shown in FIG. 1, the valve body 2 moves to the valve lid 8 side, and an open state in which the inlet 3 and the outlet 4 communicate with each other through the fluid passage 10 is shown.

図２は上記閉鎖弁の閉鎖時の断面図である。この閉鎖弁では、図２に示すように、弁体２が弁座５側に移動して、流体通路１０を閉鎖した状態を示している。   FIG. 2 is a cross-sectional view of the closing valve when closed. In this closing valve, as shown in FIG. 2, the valve body 2 moves to the valve seat 5 side and the fluid passage 10 is closed.

また、図３は上記閉鎖弁の弁体２の拡大断面図を示している。この弁体２は、図３に示すように、図１に示すハウジング１の弁座５と当接するテーパ面２１aを有する円錐台形状の当接部２１と、その当接部２１の大径側から軸方向に延び、外周にねじ部２８が設けられた円筒形状の大径部２２Ａと、上記大径部２２Ａに連なって軸方向に延びる円筒形状の小径部２２Ｂとを有する。上記小径部２２Ｂに、環状凸部２３と環状溝部２４および環状凸部２４を、大径部２２Ａ側から環状凸部２３と環状溝部２４および環状凸部２４の順に設けている。そして、小径部２２Ｂと大径部２２Ａの一部に、軸方向に六角穴２７を設けている。上記六角穴２７に六角レンチ(図示せず)を挿入して弁体２を回転させて、弁体２(図１,図２に示す)を軸方向に移動させることによって、弁体２の当接部２１を弁座５に接離させて閉鎖弁を開閉する。   FIG. 3 shows an enlarged sectional view of the valve body 2 of the closing valve. As shown in FIG. 3, the valve body 2 includes a truncated cone-shaped contact portion 21 having a tapered surface 21 a that contacts the valve seat 5 of the housing 1 shown in FIG. 1, and a large diameter side of the contact portion 21. The cylindrical large-diameter portion 22A extending in the axial direction and having a screw portion 28 provided on the outer periphery thereof, and the cylindrical small-diameter portion 22B extending in the axial direction continuously to the large-diameter portion 22A. The small-diameter portion 22B is provided with the annular convex portion 23, the annular groove portion 24, and the annular convex portion 24 in the order of the annular convex portion 23, the annular groove portion 24, and the annular convex portion 24 from the large-diameter portion 22A side. A hexagonal hole 27 is provided in the axial direction in a part of the small diameter portion 22B and the large diameter portion 22A. A hexagon wrench (not shown) is inserted into the hexagon hole 27 and the valve body 2 is rotated to move the valve body 2 (shown in FIGS. 1 and 2) in the axial direction. The contact portion 21 is brought into and out of contact with the valve seat 5 to open and close the closing valve.

上記第１実施形態の樹脂製の弁体２,３０を用いた閉鎖弁によれば、低コストでかつシール性のよい閉鎖弁を実現することができる。   According to the closing valve using the resin valve bodies 2 and 30 of the first embodiment, it is possible to realize a closing valve with low cost and good sealing performance.

また、図３に示すように、弁体２とハウジング１との間をシールするシール部としてのＯリング２６を、弁体２の材料と異なる材料を用いることによって、弁体２の材料によらず、Ｏリング２６にシール性のよい材料を選択することができ、シール性をさらに向上できる。   Further, as shown in FIG. 3, an O-ring 26 as a seal portion that seals between the valve body 2 and the housing 1 is made of a material different from the material of the valve body 2, thereby depending on the material of the valve body 2. Therefore, a material having a good sealing property can be selected for the O-ring 26, and the sealing property can be further improved.

また、上記弁体２が収納されたハウジング１の収納部１bが、弁体２を挿入する開口にしぼり部１１が設けられた構造において、弁体２を樹脂にすることによって、全体の剛性を下げることができ、収納部１aの開口部分のかしめを容易に行うことができる。   Further, in the structure in which the housing portion 1b of the housing 1 in which the valve body 2 is housed is provided with the narrowed portion 11 in the opening into which the valve body 2 is inserted, the overall rigidity is improved by using the valve body 2 as a resin. The opening portion of the storage portion 1a can be easily caulked.

上記第１実施形態では、シール部としてのＯリング２６を弁体２側に設けたが、ハウジング側に設けてもよい。   In the first embodiment, the O-ring 26 as a seal portion is provided on the valve body 2 side, but may be provided on the housing side.

（第２実施形態）
図４はこの発明の第２実施形態の閉鎖弁の弁体３０の拡大断面図を示している。この弁体３０は、シール部を除いて第１実施形態の閉鎖弁の図３に示す弁体２と同一の構成をしており、図１,図２を援用する。 (Second Embodiment)
FIG. 4 shows an enlarged cross-sectional view of the valve body 30 of the closing valve according to the second embodiment of the present invention. This valve body 30 has the same configuration as the valve body 2 shown in FIG. 3 of the closing valve of the first embodiment except for the seal portion, and FIGS. 1 and 2 are used.

図４に示すように、弁体３０は、図１に示すハウジング１の弁座５と当接するテーパ面３１aを有する円錐台形状の当接部３１と、その当接部３１の大径側から軸方向に延び、外周にねじ部３８が設けられた円筒形状の第１大径部３２と、上記第１大径部３２に連なって軸方向に延びる円筒形状の小径部３３と、上記小径部３３に連なって軸方向に延びる円筒形状の第２大径部３４を有する。上記第２大径部３４に、シール部の一例としての環状凸部２４を設けている。この環状凸部２４により弁体２とハウジング１との間をシールする。   As shown in FIG. 4, the valve body 30 includes a truncated cone-shaped contact portion 31 having a tapered surface 31 a that contacts the valve seat 5 of the housing 1 shown in FIG. 1, and a large diameter side of the contact portion 31. A cylindrical first large-diameter portion 32 extending in the axial direction and provided with a screw portion 38 on the outer periphery, a cylindrical small-diameter portion 33 extending in the axial direction continuously to the first large-diameter portion 32, and the small-diameter portion The second large-diameter portion 34 having a cylindrical shape extending in the axial direction and continuing to 33 is provided. An annular convex portion 24 as an example of a seal portion is provided on the second large diameter portion 34. The annular projection 24 seals between the valve body 2 and the housing 1.

上記第２実施形態の樹脂製の弁体３０を用いた閉鎖弁によれば、第１実施形態の閉鎖弁と同様の効果を有する。   According to the closing valve using the resin valve body 30 of the second embodiment, it has the same effect as the closing valve of the first embodiment.

また、図４に示すように、弁体３０とハウジング１との間をシールするシール部としての環状凸部２４を、成型により弁体３０と一体に形成することによって、別に用意したＯリングを弁体に装着する必要がなくなるので、コストをさらに低減することができる。   In addition, as shown in FIG. 4, by separately forming an annular convex portion 24 as a seal portion for sealing between the valve body 30 and the housing 1 by molding with the valve body 30, a separately prepared O-ring is provided. Since it is not necessary to attach to the valve body, the cost can be further reduced.

上記第２実施形態では、シール部としての環状凸部２４は、同じ樹脂材料を用いた成形により弁体２と一体に形成したが、異なる材料の弁体とシール部を二色成形等により一体に形成してもよい。   In the second embodiment, the annular convex portion 24 as the seal portion is integrally formed with the valve body 2 by molding using the same resin material, but the valve body and the seal portion of different materials are integrally formed by two-color molding or the like. You may form in.

（第３実施形態）
また、図５はこの発明の第３実施形態の閉鎖弁を用いた空気調和機の冷媒回路の回路図を示している。図５において、６１は室外機、６２は室内機である。この空気調和機の室外機６１は、図５に示すように、圧縮機７１と、四路弁７２と、室外熱交換器７３と、電動膨張弁７４と、フィルタ７５と、閉鎖弁７６,７８と、アキュムレータ７９と、室外ファン８１とを有している。また、室内機６２は、室内熱交換器７７と、室内ファン８２とを有している。 (Third embodiment)
FIG. 5 shows a circuit diagram of a refrigerant circuit of an air conditioner using a closing valve according to a third embodiment of the present invention. In FIG. 5, 61 is an outdoor unit and 62 is an indoor unit. As shown in FIG. 5, the outdoor unit 61 of the air conditioner includes a compressor 71, a four-way valve 72, an outdoor heat exchanger 73, an electric expansion valve 74, a filter 75, and closing valves 76, 78. And an accumulator 79 and an outdoor fan 81. The indoor unit 62 includes an indoor heat exchanger 77 and an indoor fan 82.

上記圧縮機７１の吐出側に一端を四路弁７２の一端に接続し、上記四路弁７２の他端を室外熱交換器７３の一端に接続している。上記室外熱交換器７３の他端に電動膨張弁７４の一端を接続し、上記電動膨張弁７４の他端にフィルタ７５の一端を接続する。また、上記フィルタ７５の他端に閉鎖弁７６の一端を接続し、上記閉鎖弁７６の他端に連絡配管Ｌ１を介して室内熱交換器７７の一端を接続している。上記室内熱交換器７７の他端に連絡配管Ｌ２を介して閉鎖弁７８の一端を接続し、その閉鎖弁７８の他端を四路弁７２とアキュムレータ７９を介して圧縮機７１の吸込側に接続している。   One end is connected to one end of the four-way valve 72 on the discharge side of the compressor 71, and the other end of the four-way valve 72 is connected to one end of the outdoor heat exchanger 73. One end of an electric expansion valve 74 is connected to the other end of the outdoor heat exchanger 73, and one end of a filter 75 is connected to the other end of the electric expansion valve 74. One end of a closing valve 76 is connected to the other end of the filter 75, and one end of an indoor heat exchanger 77 is connected to the other end of the closing valve 76 via a connecting pipe L1. One end of a closing valve 78 is connected to the other end of the indoor heat exchanger 77 via a communication pipe L2, and the other end of the closing valve 78 is connected to the suction side of the compressor 71 via a four-way valve 72 and an accumulator 79. Connected.

上記圧縮機７１、四路弁７２、室外熱交換器７３、電動膨張弁７４、フィルタ７５、閉鎖弁７６、室内熱交換器７７、閉鎖弁７８およびアキュムレータ７９で冷媒回路を形成している。   The compressor 71, the four-way valve 72, the outdoor heat exchanger 73, the electric expansion valve 74, the filter 75, the closing valve 76, the indoor heat exchanger 77, the closing valve 78, and the accumulator 79 form a refrigerant circuit.

上記構成の空気調和機によれば、上記実施形態の閉鎖弁を冷媒配管に配設することによって、低コストな空気調和機を実現することができる。   According to the air conditioner having the above configuration, a low-cost air conditioner can be realized by disposing the shut-off valve of the above embodiment in the refrigerant pipe.

図１はこの発明の第１実施形態の閉鎖弁の断面図である。FIG. 1 is a sectional view of a closing valve according to a first embodiment of the present invention. 図２は上記閉鎖弁の閉鎖時の断面図である。FIG. 2 is a cross-sectional view of the closing valve when closed. 図３は上記閉鎖弁の弁体の拡大断面図である。FIG. 3 is an enlarged sectional view of the valve body of the closing valve. 図４はこの発明の第２実施形態の閉鎖弁の弁体の拡大断面図である。FIG. 4 is an enlarged sectional view of the valve body of the closing valve according to the second embodiment of the present invention. 図５はこの発明の第３実施形態の閉鎖弁を用いた空気調和機の冷媒回路の回路図である。FIG. 5 is a circuit diagram of a refrigerant circuit of an air conditioner using a closing valve according to a third embodiment of the present invention. 図６は従来の閉鎖弁の断面図である。FIG. 6 is a sectional view of a conventional closing valve.

符号の説明Explanation of symbols

１…ハウジング
２…弁体
３…入口
４…出口
５…弁座
６…キャップ
７…フレアナット
８…弁蓋
１０…流体通路
１１…しぼり部
２１…当接部
２１a…テーパ面
２２Ａ…大径部
２２Ｂ…小径部
２３,２４…環状凸部
２５…環状溝部
２６…Ｏリング
２７…六角穴
２８…ねじ部
３１…当接部
３２…第１大径部
３３…小径部
３４…第２大径部
３５…シール部
３７…六角穴
３８…ねじ部
７６,７８…閉鎖弁 DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... Valve body 3 ... Inlet 4 ... Outlet 5 ... Valve seat 6 ... Cap 7 ... Flare nut 8 ... Valve cover 10 ... Fluid passage 11 ... Squeeze part 21 ... Contact part 21a ... Tapered surface 22A ... Large diameter part 22B ... small diameter portion 23,24 ... annular convex portion 25 ... annular groove portion 26 ... O-ring 27 ... hexagonal hole 28 ... screw portion 31 ... contact portion 32 ... first large diameter portion 33 ... small diameter portion 34 ... second large diameter portion 35 ... Sealing part 37 ... Hexagonal hole 38 ... Screw part 76, 78 ... Shut-off valve

Claims (5)

入口(３)と、出口(４)と、この入口(３)および出口(４)に連通する弁室(１a)と、上記弁室(１a)に設けられた弁座(５)とを有する金属製のハウジング(１)と、
上記ハウジング(１)の弁室(１a)内に移動可能に設けられて、上記弁座(５)に接離する当接部(２１)を有する樹脂製の弁体(２,３０)と
を備えたことを特徴とする閉鎖弁。 It has an inlet (3), an outlet (4), a valve chamber (1a) communicating with the inlet (3) and the outlet (4), and a valve seat (5) provided in the valve chamber (1a). A metal housing (1);
A resin valve body (2, 30) provided in a movable manner in the valve chamber (1a) of the housing (1) and having a contact portion (21) contacting and separating from the valve seat (5); A shut-off valve characterized by comprising. 請求項１に記載の閉鎖弁において、
上記弁体(２)と上記ハウジング(１)との間をシールするシール部(２６)を備え、
上記シール部(２６)が上記弁体(２)の材料と異なる材料であることを特徴とする閉鎖弁。 The shut-off valve according to claim 1,
A seal portion (26) for sealing between the valve body (2) and the housing (1);
A closing valve characterized in that the seal part (26) is made of a material different from the material of the valve body (2). 請求項１に記載の閉鎖弁において、
上記弁体(３０)は、上記弁体(３０)と上記ハウジング(１)との間をシールするシール部(３５)と一体に形成されていることを特徴とする閉鎖弁。 The shut-off valve according to claim 1,
The valve body (30) is integrally formed with a seal portion (35) for sealing between the valve body (30) and the housing (1). 請求項１乃至３のいずれか１つに記載の閉鎖弁において、
上記弁体(２,３０)が収納された上記ハウジング(１)の収納部(１b)は、上記弁体(２,３０)が挿入された開口にしぼり部(１１)が設けられていることを特徴とする閉鎖弁。 The closing valve according to any one of claims 1 to 3,
The housing part (1b) of the housing (1) in which the valve body (2, 30) is housed is provided with a constricted part (11) in the opening into which the valve body (2, 30) is inserted. A closing valve characterized by. 請求項１乃至４のいずれか１つの閉鎖弁(７６,７８)を冷媒配管に配設したことを特徴とする空気調和機。   An air conditioner characterized in that the closing valve (76, 78) according to any one of claims 1 to 4 is arranged in the refrigerant pipe.
JP2006014894A 2006-01-24 2006-01-24 Shutoff valve and air conditioner Pending JP2007198423A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2006014894A JP2007198423A (en) 2006-01-24 2006-01-24 Shutoff valve and air conditioner
CNA2007800021148A CN101365901A (en) 2006-01-24 2007-01-17 Closing valve and air conditioner
PCT/JP2007/050583 WO2007086290A1 (en) 2006-01-24 2007-01-17 Closing valve and air conditioner
KR1020087016440A KR20080086878A (en) 2006-01-24 2007-01-17 Closing valve and air conditioner

Applications Claiming Priority (1)

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JP2006014894A JP2007198423A (en) 2006-01-24 2006-01-24 Shutoff valve and air conditioner

Publications (1)

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CN (1) CN101365901A (en)
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US10378658B2 (en) 2015-04-03 2019-08-13 Gd Midea Heating & Ventilating Equipment Co., Ltd. Stop valve and air conditioner having the same
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JP4114457B2 (en) * 2002-10-11 2008-07-09 ダイキン工業株式会社 Shut-off valve and air conditioner

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JP2018138818A (en) * 2017-02-24 2018-09-06 大電株式会社 Valve device

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WO2007086290A1 (en) 2007-08-02
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