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JP6511427B2 - Flow path switching valve - Google Patents

Flow path switching valve Download PDF

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Publication number
JP6511427B2
JP6511427B2 JP2016245368A JP2016245368A JP6511427B2 JP 6511427 B2 JP6511427 B2 JP 6511427B2 JP 2016245368 A JP2016245368 A JP 2016245368A JP 2016245368 A JP2016245368 A JP 2016245368A JP 6511427 B2 JP6511427 B2 JP 6511427B2
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Prior art keywords
valve
valve body
valve chamber
flow path
path switching
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JP2016245368A
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JP2018100682A (en
Inventor
原 聖一
聖一 原
望月 健一
健一 望月
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Fujikoki Corp
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Fujikoki Corp
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Priority to JP2016245368A priority Critical patent/JP6511427B2/en
Priority to CN201711097009.9A priority patent/CN108204468A/en
Priority to KR1020170153603A priority patent/KR102355554B1/en
Publication of JP2018100682A publication Critical patent/JP2018100682A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/06Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/065Construction of housing; Use of materials therefor of taps or cocks with cylindrical plugs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/041Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0414Plug channel at 90 degrees to the inlet
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0457Packings
    • F16K5/0471Packings between housing and plug
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/04Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
    • F16K5/0457Packings
    • F16K5/0478Packings on the plug
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08Details
    • F16K5/14Special arrangements for separating the sealing faces or for pressing them together
    • F16K5/18Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces
    • F16K5/181Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces with the housing or parts of the housing mechanically pressing the seals against the plugs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)
  • Valve Housings (AREA)
  • Sliding Valves (AREA)

Description

本発明は、流路切換弁に係り、例えば円筒状の弁体(円筒弁)を弁室内で回転摺動させることにより流路を切り換えるロータリー形の流路切換弁に関する。   The present invention relates to a flow passage switching valve, for example, a rotary flow passage switching valve that switches a flow passage by rotating and sliding a cylindrical valve body (cylindrical valve) in a valve chamber.

この種の流路切換弁の一種である四方弁として、電磁弁を使用し、高圧側と低圧側の圧力差を利用して弁体を移動(スライド)させることにより流路切換えを行うスライド式のものや、モータ等によって弁体(バタフライバルブ)を回動させることにより流路切換えを行うバタフライ式のものが知られている。   A slide type that uses a solenoid valve as a four-way valve, which is a type of flow path switching valve of this type, and moves (slides) the valve body using the pressure difference between the high pressure side and the low pressure side. And butterfly type in which the flow path is switched by rotating a valve body (butterfly valve) with a motor or the like.

また、モータ等によってアーチ形の凸状表面を弾性体で形成した弁体を弁室内で回転させ、その弾性体を弁室の内面に摺動させるとともに、その弾性体をコイルばねによって弁室の内面に付勢するようにした三方弁等も知られている(下記特許文献1参照)。   Further, a valve body having an arch-shaped convex surface formed of an elastic body by a motor or the like is rotated in the valve chamber, the elastic body is slid on the inner surface of the valve chamber, and the elastic body is There is also known a three-way valve or the like that is biased to the inner surface (see Patent Document 1 below).

特開2013−36509号公報JP, 2013-36509, A

しかし、前述したスライド式の四方弁においては、別途電磁弁が必要となり、構造が複雑で大型化するという問題があるとともに、弁漏れ量が多くなる嫌いがある。   However, in the slide type four-way valve described above, a separate solenoid valve is required, and there is a problem that the structure is complicated and the size is increased, and the valve leakage amount is increased.

また、前述したバタフライ式の四方弁においては、円筒状のシールゴムと弁体(バラフライバルブ)が常時摺接するため、ゴム劣化が促進され、流路切換え完了時のトルクが弱いと弁体先端部のシールが甘くなり、弁漏れが発生する恐れがある。また、ゴムを圧縮し続けるために常時トルクを維持しておく必要があるとともに、構造が複雑で組立が難しいという難点もある。   Further, in the above-mentioned butterfly-type four-way valve, since the cylindrical seal rubber and the valve body (bulb-fly valve) are always in sliding contact with each other, rubber deterioration is promoted. The seal may be sweet and valve leakage may occur. In addition, in order to keep compressing the rubber, it is necessary to always maintain torque, and there is also a disadvantage that the structure is complicated and assembly is difficult.

また、上記特許文献1に所載の三方弁においては、弁体先端部の弾性体が弁室の内面を摺接するとともに、コイルばねによってその弾性体を弁室の内面に付勢する必要があるため、前述のバタフライ式の四方弁等と同様に、構造・組立が煩雑化するという問題がある。   Further, in the three-way valve described in Patent Document 1, it is necessary that the elastic body at the tip of the valve body slidably contacts the inner surface of the valve chamber, and the elastic body be biased toward the inner surface of the valve chamber by a coil spring. Therefore, there is a problem that the structure and assembly become complicated as in the above-mentioned butterfly-type four-way valve and the like.

本発明は、前記課題に鑑みてなされたものであって、その目的とするところは、構造・組立が極めて容易で、かつ、弁漏れを確実に抑えることのできる流路切換弁を提供することにある。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a flow path switching valve which is extremely easy in structure and assembly and which can reliably suppress valve leakage. It is in.

上記する課題を解決するために、本発明に係る流路切換弁は、弁室、該弁室の底部に開口せしめられた底部開口、及び、該弁室の側部に開口せしめられた少なくとも3個の側部開口を有する弁本体と、前記弁室内に回転自在に配在された筒状の弁体とを備え、前記弁体を回転させることにより、前記側部開口及び前記少なくとも3個の側部開口の連通状態を選択的に切り換えるようにされた流路切換弁であって、前記弁体は、前記弁室の側部から所定の隙間をあけて該弁室内に配在されるとともに、前記弁体の回転に応じて前記底部開口と前記少なくとも3個の側部開口のいずれかとを択一的に連通させるべく、前記弁体の内部空間が前記底部開口と常時連通せしめられ、前記弁体の側部に、貫通口及び該貫通口周りから外向きに延びる筒状部が設けられ、該筒状部に、前記弁体回転時に前記弁室の側部に摺接するとともに該筒状部と前記少なくとも3個の側部開口のいずれかとの間をシールする環状のシート材が装着されており、前記底部開口が流入口とされ、前記少なくとも3個の側部開口は、少なくとも1個の流入口、該1個の流入口に連通する少なくとも1個の流出口、及び前記底部開口に連通する少なくとも1個の流出口を含むことを特徴としている。 In order to solve the above-mentioned problems, the flow path switching valve according to the present invention comprises a valve chamber, a bottom opening opened to the bottom of the valve chamber, and at least 3 opened to the side of the valve chamber. A valve body having a plurality of side openings, and a cylindrical valve body rotatably disposed in the valve chamber, and by rotating the valve body, the side openings and the at least three side openings are provided. A flow path switching valve adapted to selectively switch the communication state of the side opening, wherein the valve body is disposed in the valve chamber with a predetermined gap from the side of the valve chamber. The internal space of the valve body is in constant communication with the bottom opening so that the bottom opening and one of the at least three side openings are alternatively communicated according to the rotation of the valve body. A through hole and a cylindrical member extending outward from around the through hole on the side of the valve body An annular sheet material which is provided on the cylindrical portion and in sliding contact with the side portion of the valve chamber when the valve body rotates, and seals between the cylindrical portion and any one of the at least three side openings. Are mounted , the bottom opening is an inlet, and the at least three side openings are at least one inlet, at least one outlet communicating with the one inlet, and the at least one outlet. It is characterized in that it includes at least one outlet communicating with the bottom opening .

好ましい態様では、前記筒状部と前記シート材との間に、該シート材を前記弁室の側部に付勢する弾性部材が介装される。   In a preferred embodiment, an elastic member is interposed between the cylindrical portion and the sheet material to bias the sheet material to the side of the valve chamber.

更に好ましい態様では、前記シート材の外周部分を突出させるようにして、前記筒状部に設けられた凹部内に、前記弾性部材及び前記シート材がその順で収容される。   In a further preferable aspect, the elastic member and the sheet material are accommodated in the order in the recess provided in the cylindrical portion so that the outer peripheral portion of the sheet material protrudes.

別の好ましい態様では、前記弁体の天井部から突設された弁軸が前記弁室の天井部に設けられた嵌挿穴に摺動回転可能に内挿されるとともに、前記弁体の下部が前記弁室の底部に設けられた嵌合穴に摺動回転可能に内挿される。   In another preferred embodiment, a valve shaft protruding from the ceiling of the valve body is slidably inserted into a fitting insertion hole provided in the ceiling of the valve chamber, and the lower portion of the valve body is It is slidably inserted into a fitting hole provided at the bottom of the valve chamber.

更に好ましい態様では、前記弁本体は、前記弁室の側部を形成して前記側部開口が設けられた基体部材と、前記弁室の底部を形成して前記底部開口が設けられた下部ポート部材とを有する。   In a further preferred aspect, the valve body forms a side of the valve chamber to form a base member provided with the side opening, and a bottom of the valve chamber forms a bottom portion to provide the bottom opening. And a member.

更に好ましい態様では、前記下部ポート部材における前記底部開口の上側に前記嵌合穴が設けられる。   In a further preferred aspect, the fitting hole is provided above the bottom opening in the lower port member.

本発明によれば、筒状の弁体が、弁室の側部から所定の隙間をあけて該弁室内に配在されるとともに、その弁体の内部空間が底部開口と常時連通せしめられ、弁体の側部に、貫通口及び該貫通口周りから外向きに延びる筒状部が設けられ、筒状部に、弁体回転時に弁室の側部に摺接するとともに筒状部と少なくとも3個の側部開口のいずれかとの間をシールする環状のシート材が装着され、当該弁体を弁室内で回転させることにより、弁室の底部に設けられた底部開口と弁室の側部に設けられた少なくとも3個の側部開口のいずれかとが弁体の内部空間並びに貫通口及び筒状部内を介して連通せしめられ、少なくとも3個の側部開口のうちの少なくとも2つの側部開口同士が弁体と弁室の側部との間に設けられた隙間(弁室における弁体の外側)を介して連通せしめられるようにされる。そのため、シンプルな構造で、シール性を確保しながら、弁本体に設けられた各開口間の流路切換えを行うことができる。   According to the present invention, the cylindrical valve body is disposed in the valve chamber with a predetermined gap from the side portion of the valve chamber, and the internal space of the valve body is constantly communicated with the bottom opening, A through hole and a cylindrical portion extending outward from around the through hole are provided on the side portion of the valve body, and the cylindrical portion slidably contacts the side portion of the valve chamber when the valve body rotates and at least three cylindrical portions An annular sheet material is mounted which seals between any of the side openings, and by rotating the valve body within the valve chamber, the bottom opening provided at the bottom of the valve chamber and the side of the valve chamber At least two of the at least three side openings are communicated with one of the provided at least three side openings through the interior space of the valve body and the inside of the through hole and the tubular portion. Gap between the valve body and the side of the valve chamber (outside of the valve body in the valve chamber) ) Through which adapted to be brought into communication. Therefore, it is possible to perform the flow path switching between the openings provided in the valve main body while securing the sealing property with a simple structure.

また、弁体の天井部から突設された弁軸が弁室の天井部に設けられた嵌挿穴に摺動回転可能に内挿されるとともに、弁体の下部が弁室の底部に設けられた嵌合穴に摺動回転可能に内挿されるので、弁室内での弁体の位置ずれ(がたつき)が抑制され、弁漏れをより効果的に抑えることができる。   Also, a valve shaft protruding from the ceiling of the valve body is slidably inserted into a fitting insertion hole provided in the ceiling of the valve chamber, and a lower portion of the valve is installed at the bottom of the valve chamber. Since the sliding insertion of the valve body into the fitting hole is possible, positional deviation (slack) of the valve body in the valve chamber can be suppressed, and valve leakage can be more effectively suppressed.

また、弁本体は、弁室の側部を形成する基体部材と、弁室の底部を形成する下部ポート部材とで構成され、筒状の弁体を下側(下部ポート部材側)から弁室内に挿入して組み付けられるので、組立が極めて容易となる。   Further, the valve body is composed of a base member forming a side portion of the valve chamber and a lower port member forming the bottom of the valve chamber, and the cylindrical valve body is viewed from the lower side (lower port member side) The assembly is extremely easy as it is inserted and assembled.

本発明に係る流路切換弁(四方弁)の一実施形態の全体構成を示す外観斜視図。BRIEF DESCRIPTION OF THE DRAWINGS The external appearance perspective view which shows the whole structure of one Embodiment of the flow-path switching valve (four-way valve) which concerns on this invention. 図1に示される流路切換弁の分解斜視図。The disassembled perspective view of the flow-path switching valve shown by FIG. 図1に示される流路切換弁の第1連通状態を示す部分切欠(平面視で中心角90°部分が切欠)斜視図。FIG. 7 is a partial cutaway view (in a plan view, with a 90 ° central angle cutaway) perspective view showing a first communication state of the flow passage switching valve shown in FIG. 1; (A)は図3のU−U矢視線に従う断面図、(B)は図3のX−X矢視線に従う断面図。(A) is a cross-sectional view taken along the line U-U in FIG. 3, (B) is a cross-sectional view taken along the line X-X in FIG. 図1に示される流路切換弁の第2連通状態を示す部分切欠(平面視で中心角90°部分が切欠)斜視図。The partial notch which shows the 2nd communication state of the flow-path switching valve shown by FIG. 1 (the 90 degree center angle notch in a planar view) perspective view. (A)は図5のV−V矢視線に従う断面図、(B)は図5のX−X矢視線に従う断面図。(A) is a cross-sectional view taken along line V-V in FIG. 5, (B) is a cross-sectional view taken along line X-X in FIG.

以下、本発明の実施形態を図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

なお、各図において、部材間に形成される隙間や部材間の離隔距離等は、発明の理解を容易にするため、また、作図上の便宜を図るため、誇張して描かれている場合がある。また、本明細書において、上下、左右、前後等の位置、方向を表わす記述は、図1の方向矢印表示を基準としており、実際の使用状態での位置、方向を指すものではない。   In each of the drawings, the gaps formed between the members, the separation distance between the members, etc. may be drawn in an exaggerated manner in order to facilitate understanding of the invention and for convenience of drawing. is there. Further, in the present specification, the description indicating the position and direction such as upper and lower, right and left, front and rear, etc. is based on the direction arrow display of FIG. 1 and does not indicate the position and direction in the actual use state.

図1は、本発明に係る流路切換弁(四方弁)の一実施形態の全体構成を示す外観斜視図である。また、図2は、図1に示される流路切換弁の分解斜視図である。なお、図1以外の各図においては、弁体を回転駆動するための回転駆動部としてのモータは省略されている。   FIG. 1 is an external perspective view showing an entire configuration of an embodiment of a flow passage switching valve (four-way valve) according to the present invention. FIG. 2 is an exploded perspective view of the flow path switching valve shown in FIG. In addition, in each figure except FIG. 1, the motor as a rotational drive part for rotationally driving a valve body is abbreviate | omitted.

図示実施形態の流路切換弁1は、例えば自動車のエンジンルーム内等を流れる流体の流路を多方向に切り換えるロータリー形の四方弁として使用されるもので、基本的に、弁室11を有する樹脂製、金属製等の弁本体10と、弁室11内に回転自在に配在された天井部20a付き円筒状の弁体(円筒弁ともいう)20と、弁体20を回転軸線O回りで回転させるべく、弁本体10の上部に配置されたモータ(回転駆動部)9と、を備えている。なお、弁体20の回転軸線(上下方向に延びる軸線)Oは、後述する流入口p11や弁軸28の中心線と同軸とされている。   The flow path switching valve 1 of the illustrated embodiment is used as, for example, a rotary four-way valve that switches the flow path of fluid flowing in the engine room of a car in multiple directions, and basically has a valve chamber 11 A valve body 10 made of resin, metal or the like, a cylindrical valve body (also referred to as a cylindrical valve) 20 with a ceiling portion 20a rotatably disposed in the valve chamber 11, and the valve body 20 about the rotation axis O And a motor (rotational drive unit) 9 disposed at the upper part of the valve body 10 in order to make it rotate. The rotation axis (an axis extending in the vertical direction) O of the valve body 20 is coaxial with the center line of the inlet p11 described later and the valve shaft 28.

前記弁本体10は、天井部12a付き角筒状の基体部材12と下部ポート部材15とで構成されており、前記基体部材12は、内部に円筒状空所からなる弁室11が形成されるとともに、左部中央、前部中央、及び右部中央にそれぞれ、前記弁室11に開口する流入口(側部開口)p12、流出口(側部開口)p13、及び流出口(側部開口)p14が(90°の角度間隔をあけて)設けられている。前記基体部材12の外周には、流入口p12、流出口p13、及び流出口p14に連通するように管継手からなるポート#12、#13、#14が一体的に連結されている。また、前記基体部材12の天井部12aには、弁体20(の天井部20a)に連結される弁軸28(の胴部28a)が挿通される嵌挿穴13が設けられている。基体部材12の下端開口には、前記弁室11に開口する縦向きの流入口(底部開口)p11が設けられた管継手からなるポート#11を持つ下部ポート部材15が、ねじ止め、超音波溶着、圧入、かしめ等(図示例では、ねじ止め)により固定されている。   The valve body 10 is composed of a rectangular tubular base member 12 with a ceiling 12a and a lower port member 15. The base member 12 has a valve chamber 11 formed of a cylindrical space inside. And an inlet (side opening) p12, an outlet (side opening) p13, and an outlet (side opening) opening to the valve chamber 11 at the left center, front center, and right center, respectively. p14 is provided (90 degrees apart). Ports # 12, # 13, and # 14, each of which is a pipe joint, are integrally connected to the outer periphery of the base member 12 so as to communicate with the inlet p12, the outlet p13, and the outlet p14. Further, the ceiling 12a of the base member 12 is provided with a fitting hole 13 through which the valve stem 28 (the body 28a of the valve shaft 28 connected to the (the ceiling 20a of the valve body 20) is inserted. At the lower end opening of the base member 12, the lower port member 15 having a port # 11 consisting of a pipe joint provided with a vertically oriented inlet (bottom opening) p11 opening to the valve chamber 11 is screwed, ultrasonic wave It is fixed by welding, press fitting, caulking or the like (in the illustrated example, screwing).

前記下部ポート部材15の上面(弁室11側の面)には、前記流入口p11より大径の嵌合穴16が(流入口p11の上側に連設するように)貫設され、かつ、基体部材12の下端開口に内嵌される大きさの(すなわち、基体部材12の下端開口と略同じ外径の)円筒状の嵌合筒部17が一体的に突設されている。前記嵌合筒部17の外周(に設けられた管状溝)には、基体部材12の下端開口と下部ポート部材15との間をシールするシール部材としてのOリング19が装着されている。   A fitting hole 16 having a diameter larger than the inflow port p11 is formed in a penetrating manner on the upper surface (surface on the valve chamber 11 side) of the lower port member 15 (so as to be continuous with the upper side of the inflow port p11), A cylindrical fitting cylindrical portion 17 of a size fitted inside the lower end opening of the base member 12 (that is, having an outer diameter substantially the same as the lower end opening of the base member 12) is integrally protruded. An O-ring 19 as a seal member for sealing between the lower end opening of the base member 12 and the lower port member 15 is mounted on (the tubular groove provided on) the outer periphery of the fitting cylindrical portion 17.

すなわち、弁本体10には、弁室11の底部に開口せしめられた流入口p11が設けられるとともに、弁室11の側部に開口せしめられた流入口p12と流出口p13と流出口p14が弁体20の回転軸線O周りで90°の角度間隔をあけて設けられている。   That is, the valve body 10 is provided with the inlet p11 opened at the bottom of the valve chamber 11, and the inlet p12, the outlet p13 and the outlet p14 opened at the side of the valve chamber It is provided at an angular interval of 90 ° around the rotation axis O of the body 20.

前記弁体20は、例えば合成樹脂製あるいは金属製の段付き円筒体で構成されており、図1、2と併せて図3〜図6を参照すればよく分かるように、その内径は、流入口p11の口径(内径)と略同じ、その外径は、弁室11の内径より小径とされ、弁体20の側部(外周部)と弁室11の側部(内周面)との間には、所定の隙間が形成されている。すなわち、弁体20は、弁室11の側部から所定の隙間をあけて該弁室11内に回転自在に配在されており、当該弁体20の外側(つまり、弁体20の側部と弁室11の側部との間の隙間)は、前記弁本体10の側部に設けられた流入口p12及び流出口p13、p14のうちの2つを選択的に連通する流路(外周流路)32とされる(後で詳述)。   The valve body 20 is formed of, for example, a step cylinder made of synthetic resin or metal, and as is well understood by referring to FIGS. 3 to 6 in conjunction with FIGS. The outer diameter of the inlet p11 is substantially the same as the diameter (inner diameter) of the inlet p11. The outer diameter is smaller than the inner diameter of the valve chamber 11, and the side (outer periphery) of the valve body 20 and the side (inner peripheral surface) of the valve chamber 11 A predetermined gap is formed between the two. That is, the valve body 20 is rotatably disposed in the valve chamber 11 with a predetermined gap from the side portion of the valve chamber 11, and the outer side of the valve body 20 (that is, the side portion of the valve body 20). The gap between the valve chamber 11 and the side of the valve chamber 11 selectively connects two of the inlet p12 and the outlets p13 and p14 provided on the side of the valve body 10 Flow path) 32) (detailed later).

また、前記弁体20の下部(の外径)は大径とされ(下部大径部21)、その下部大径部21の上部外周に鍔状係止部22が突設されている。前記弁本体10における下部ポート部材15の嵌合筒部17の内周上端(つまり、嵌合穴16の上端部分)には内周段差18が形成されており、前記鍔状係止部22が内周段差18に係止された状態で、前記下部大径部21が前記嵌合穴16に回転摺動自在に内挿されている。下部ポート部材15の嵌合穴16と下部大径部21との間(具体的には、下部大径部21の外周に設けられた環状溝)には、シール部材としてのOリング23が装着されている。このように弁体20の下部大径部21が流入口p11の上側に設けられた嵌合穴16に嵌挿されることにより、弁体20の内部空間(の下端開口)は、下部ポート部材15の流入口p11と常時連通せしめられる。   The lower portion (outer diameter) of the valve body 20 has a large diameter (the lower large diameter portion 21), and a hook-like locking portion 22 is provided on the outer periphery of the upper portion of the lower large diameter portion 21. An inner circumferential step 18 is formed on the inner peripheral upper end (that is, the upper end portion of the fitting hole 16) of the fitting cylindrical portion 17 of the lower port member 15 in the valve body 10, and the hook-like locking portion 22 is The lower large diameter portion 21 is rotatably and slidably inserted into the fitting hole 16 in a state of being locked to the inner circumferential step 18. An O-ring 23 as a seal member is attached between the fitting hole 16 of the lower port member 15 and the lower large diameter portion 21 (specifically, an annular groove provided on the outer periphery of the lower large diameter portion 21). It is done. By thus inserting the lower large diameter portion 21 of the valve body 20 into the fitting hole 16 provided on the upper side of the inflow port p11, (the lower end opening of) the internal space of the valve body 20 becomes the lower port member 15 It is always in communication with the inlet p11 of the

一方、前記弁体20の側部には、前記流入口p12及び流出口p13、p14と略同じ口径の貫通口24が開設されるとともに、その貫通口24周りから外向きに円筒状の筒状部25が突設されている。筒状部25の内周には、外向きに開口する凹部25aが形成されており、その凹部25aに、流路切換え時(弁体20回転時)に弁室11の側部に摺接するとともに流路切換え完了時に筒状部25と前記流入口p12及び流出口p13、p14との間をシール(封止)する円環状のシート材26が(若干の摺動自在に)嵌装されている。このシート材26は、流路切換え時(弁体20回転時)における弁本体10に対する弁体20の摺動抵抗を低減すべく、テフロン(登録商標)等から作製され、その内径は、前記流入口p12及び流出口p13、p14の口径と略同じ、その外径は、前記凹部25aの内径と略同じとされている。また、弁体20における筒状部25とシート材26の間、具体的には、凹部25aの底面に設けられた環状溝25bには、前記シート材26を弁本体10(弁室11)の側部に押し付ける(付勢する)ゴム等の弾性材料により作製されたOリング(弾性部材)27が(圧縮状態で)介装されている。つまり、シート材26の外周部分を突出させるようにして、前記凹部25a内に、Oリング27及びシート材26がその順で収容されている。   On the other hand, a through hole 24 having substantially the same diameter as the inflow port p12 and the outflow ports p13 and p14 is opened on the side of the valve body 20, and a cylindrical cylindrical shape outwardly from around the through hole 24 is formed. The portion 25 is provided in a protruding manner. An outwardly opening recess 25a is formed on the inner periphery of the cylindrical portion 25. The recess 25a is in sliding contact with the side portion of the valve chamber 11 when the flow path is switched (when the valve 20 is rotated). An annular sheet material 26 for sealing (sealing) between the cylindrical portion 25 and the inflow port p12 and the outflow ports p13 and p14 when the flow path switching is completed is fitted (slightly slidably) . This sheet material 26 is made of Teflon (registered trademark) or the like in order to reduce the sliding resistance of the valve body 20 against the valve main body 10 at the time of flow path switching (when the valve body 20 rotates) The outer diameter is substantially the same as the diameter of the inlet p12 and the outlets p13 and p14, and the outer diameter is substantially the same as the inner diameter of the recess 25a. Further, in the annular groove 25b provided between the cylindrical portion 25 and the sheet material 26 in the valve body 20, specifically, in the bottom surface of the recess 25a, the sheet material 26 is made of the valve body 10 (valve chamber 11). An O-ring (elastic member) 27 made of an elastic material such as rubber pressed (biased) to the side is interposed (in a compressed state). That is, the O-ring 27 and the sheet material 26 are accommodated in this order in the recess 25 a so that the outer peripheral portion of the sheet material 26 is made to project.

前記した弁体20の内部空間、貫通口24、及び筒状部25(の内部)によって、前記弁本体10に設けられた2つの流入口p11、p12及び2つの流出口p13、p14の連通状態を選択的に切り換えるべく、弁体20の回転に応じて流入口p11と流入口p12及び流出口p13、p14のいずれかとを択一的に連通させる、前記流入口p11、p12及び流出口p13、p14と略同径かつ側面視逆L字状の流路(内部流路)31が形成されることになる。   The communication state of the two inlets p11 and p12 and the two outlets p13 and p14 provided in the valve main body 10 by the internal space of the valve body 20, the through hole 24, and (the inside of) the cylindrical portion 25 The inlet p11, p12 and the outlet p13, which selectively communicate the inlet p11 with either the inlet p12 or the outlet p13, p14 according to the rotation of the valve body 20, in order to selectively switch A flow passage (internal flow passage) 31 having substantially the same diameter as p 14 and an inverted L shape in side view is formed.

弁体20の上部開口を閉塞する天井部20aには、前記モータ9の回転力を当該弁体20に伝達する弁軸28が一体的に連結されている。前記弁軸28は、前記嵌挿穴13に回動自在に嵌挿(内挿)される、弁体20より若干小径の胴部28aと、該胴部28a上に突設され、前記モータ9の出力軸に連結される平面視六角形状の係合部28c及び周方向位置決め用のDカット凸部28dを持つ上部連結部28bとから構成され、前記胴部28a(の外周に形成された環状溝)には、シール部材としてのOリング29が二段介装されている。   A valve shaft 28 for transmitting the rotational force of the motor 9 to the valve body 20 is integrally connected to a ceiling portion 20 a which closes the upper opening of the valve body 20. The valve shaft 28 is rotatably fitted (inserted) into the fitting hole 13 and has a body 28 a slightly smaller in diameter than the valve body 20, and is provided on the body 28 a so as to protrude. And an upper connecting portion 28b having a hexagonally shaped engaging portion 28c in plan view and a D-cut convex portion 28d for positioning in the circumferential direction, and an annular ring formed on the outer periphery of the body 28a. In the groove), an O-ring 29 as a sealing member is interposed in two stages.

かかる構成の流路切換弁1では、モータ9によって弁体20を弁室11内で回転させることにより、弁体20の内部に設けられた内部流路31及び外部に設けられた外周流路32を通じて、弁本体10に設けられた4つの開口(2つの流入口p11、p12及び2つの流出口p13、p14)の連通状態が選択的に切り換えられる。詳細には、弁体20の約90°の回転により、弁体20の筒状部25(に設けられたシート材26)が弁室11の内周側を回転摺動して前記弁本体10の底部(下部ポート部材15)に設けられた流入口p11と前記弁本体10(の基体部材12)の側部に設けられた流入口p12及び流出口p13、p14のいずれかとが択一的に連通され、これにより、流入口p11と流出口p13とが(内部流路31を介して)連通し、流入口p12と流出口p14とが(外周流路32を介して)連通するモード(第1連通状態)と、流入口p11と流出口p14とが(内部流路31を介して)連通し、流入口p12と流出口p13とが(外周流路32を介して)連通するモード(第2連通状態)の2つのモードが選択的にとられるようになっている。   In the flow path switching valve 1 having such a configuration, the motor 9 rotates the valve body 20 in the valve chamber 11 to make the internal flow path 31 provided inside the valve body 20 and the outer peripheral flow path 32 provided outside the valve body 20. The communication states of the four openings (two inflow ports p11 and p12 and two outflow ports p13 and p14) provided in the valve body 10 are selectively switched. In detail, by rotation of the valve body 20 by about 90 °, the cylindrical portion 25 (the sheet material 26 provided on the valve body 20) rotates and slides on the inner peripheral side of the valve chamber 11 to move the valve body 10. Alternatively, the inlet p11 provided at the bottom (lower port member 15) and the inlet p12 and the outlets p13 and p14 provided at the side of the valve body 10 (the base member 12) A mode (in which the inlet p11 and the outlet p13 communicate with each other (via the internal flow passage 31), and the inlet p12 and the outlet p14 communicate with each other (via the outer peripheral flow passage 32). (1 communication state), the inflow port p11 and the outflow port p14 communicate with each other (via the internal flow path 31), and the inflow port p12 and the outflow port p13 communicate with each other (through the outer peripheral flow path 32) Two communication modes) are selectively taken.

より詳しくは、図3、4(A)、4(B)に示される回転位置(第1連通状態)では、弁本体10の前部に設けられた流出口p13の真上に弁体20の筒状部25(のシート材26)が位置し、弁体20(の内部空間)の下端開口が流入口p11と連通するとともに、筒状部25(のシート材26)の先端(外端)開口が流出口p13と連通する。また、弁本体10の左部及び右部に設けられた流入口p12と流出口p14は、弁室11における弁体20の外側の隙間と連通する。そのため、流入口p11から上向きに流入した流体は、弁体20の内部の内部流路31内を通って前側の流出口p13から流出するとともに、流入口p12から横向きに流入した流体は、弁体20の外部の外周流路32を(約180°分だけ)通って右側の流出口p14から流出する。   More specifically, in the rotational position (first communication state) shown in FIGS. 3, 4 (A) and 4 (B), the valve body 20 is directly above the outlet p 13 provided at the front of the valve body 10. The cylindrical portion 25 (the sheet 26) is located, and the lower end opening of (the internal space of the valve body 20) communicates with the inflow port p11, and the tip (the outer end) of the (the sheet 26) An opening communicates with the outlet p13. Further, the inlet p12 and the outlet p14 provided in the left and right portions of the valve main body 10 communicate with the gap of the valve chamber 11 outside the valve body 20. Therefore, the fluid which has flowed upward from the inflow port p11 passes through the inside of the internal flow passage 31 inside the valve body 20 and flows out of the front outflow port p13, and the fluid which has flowed in laterally from the inflow port p12 It flows from the right outlet p14 through the 20 outer peripheral flow channels 32 (only about 180 °).

図3、4(A)、4(B)に示される回転位置から、モータ9によって弁体20を90°(下から視て時計回りに90°)回転させると、図5、6(A)、6(B)に示される如くに、弁本体10の右部に設けられた流出口p14の真上に弁体20の筒状部25(のシート材26)が位置し、弁体20(の内部空間)の下端開口が流入口p11と連通するとともに、筒状部25(のシート材26)の先端(外端)開口が流出口p14と連通する。また、弁本体10の左部及び前部に設けられた流入口p12と流出口p13は、弁室11における弁体20の外側の隙間と連通する。そのため、流入口p11から上向きに流入した流体は、弁体20の内部の内部流路31を通って右側の流出口p14から流出するとともに、流入口p12から横向きに流入した流体は、弁体20の外部の外周流路32を(約90°分だけ)通って前側の流出口p13から流出する(第2連通状態)。   When the valve body 20 is rotated 90 ° (90 ° clockwise as viewed from below) by the motor 9 from the rotational positions shown in FIGS. 3, 4 (A) and 4 (B), FIGS. 5 and 6 (A) 6 (B), (the sheet 26 of the cylindrical portion 25 of the valve body 20 is located immediately above the outlet p14 provided on the right side of the valve body 10, the valve body 20 (the sheet 26). The lower end opening of the (internal space) communicates with the inflow port p11, and the distal end (outer end) opening of (the sheet material 26) of the cylindrical portion 25 communicates with the outflow port p14. Further, the inlet p12 and the outlet p13 provided in the left portion and the front portion of the valve main body 10 communicate with the gap of the valve chamber 11 outside the valve body 20. Therefore, the fluid flowing upward from the inlet p11 flows out from the right outlet p14 through the internal flow passage 31 inside the valve body 20, and the fluid flowing laterally from the inlet p12 flows into the valve body 20. Through the outer peripheral flow passage 32 (for about 90.degree.) And out the front outlet p13 (second communication state).

このように、本実施形態の流路切換弁(四方弁)1では、円筒状の弁体20が、弁室11の側部から所定の隙間をあけて該弁室11内に配在されるとともに、その弁体20の内部空間が流入口p11と常時連通せしめられ、弁体20の側部に、貫通口24及び該貫通口24周りから外向きに延びる筒状部25が設けられ、筒状部25に、流路切換え時(弁体20回転時)に弁室11の側部に摺接するとともに流路切換え完了時に筒状部25と流出口p13、p14のいずれかとの間をシールする円環状のシート材26が装着され、当該弁体20を弁室11内で回転させることにより、弁室11の底部に設けられた流入口p11と弁室11の側部に設けられた流出口p13、p14のいずれかとが弁体20の内部空間並びに貫通口24及び筒状部25内からなる内部流路31を介して連通せしめられ、流入口p12と流出口p13、p14のいずれかが弁体20と弁室11の側部との間に設けられた隙間(弁室11における弁体20の外側)で形成される外周流路32を介して連通せしめられるようにされる。そのため、シンプルな構造で、シール性を確保しながら、弁本体10に設けられた各開口間の流路切換えを行うことができる。   Thus, in the flow path switching valve (four-way valve) 1 of the present embodiment, the cylindrical valve body 20 is disposed in the valve chamber 11 with a predetermined gap from the side portion of the valve chamber 11. In addition, the internal space of the valve body 20 is constantly communicated with the inflow port p11, and the through hole 24 and the cylindrical portion 25 extending outward from around the through hole 24 are provided on the side of the valve body 20. The sliding contact with the side portion of the valve chamber 11 at the time of flow passage switching (when the valve body 20 is rotated) and sealing between the cylindrical portion 25 and any one of the outlets p13 and p14 at the time of flow passage switching An annular sheet material 26 is attached, and by rotating the valve body 20 in the valve chamber 11, the inlet p11 provided at the bottom of the valve chamber 11 and the outlet provided at the side of the valve chamber 11 Either of p13 and p14 is the internal space of the valve body 20 and the through hole 24 and the cylindrical shape. A gap formed between the inflow port p12 and the outflow port p13 or p14 provided between the valve body 20 and the side portion of the valve chamber 11 (the valve chamber 11). It is made to connect via the outer periphery flow path 32 formed by the outer side of the valve body 20 in (1). Therefore, it is possible to perform the flow path switching between the openings provided in the valve main body 10 while securing the sealing property with a simple structure.

また、弁体20の天井部20aから一体的に突設された弁軸28が弁室11の天井部に設けられた嵌挿穴13に摺動回転可能に内挿されるとともに、弁体20の下部大径部21が弁室11の底部に設けられた嵌合穴16に摺動回転可能に内挿されるので、弁室11内での弁体20の位置ずれ(がたつき)が抑制され、弁漏れをより効果的に抑えることができる。   Further, the valve shaft 28 integrally provided protruding from the ceiling portion 20 a of the valve body 20 is slidably inserted into the insertion insertion hole 13 provided in the ceiling portion of the valve chamber 11, and Since the lower large diameter portion 21 is slidably inserted into the fitting hole 16 provided at the bottom of the valve chamber 11, positional deviation (slack) of the valve body 20 in the valve chamber 11 is suppressed. , Valve leakage can be suppressed more effectively.

また、弁本体10は、弁室11の側部を形成する基体部材12と、弁室11の底部を形成する下部ポート部材15とで構成され、円筒状の弁体20を下側(下部ポート部材15側)から弁室11内に挿入して組み付けられるので、組立が極めて容易となる。   Further, the valve main body 10 is composed of the base member 12 forming the side portion of the valve chamber 11 and the lower port member 15 forming the bottom portion of the valve chamber 11, and the cylindrical valve body 20 is The assembly is extremely easy because the valve 15 is assembled by being inserted into the valve chamber 11.

なお、弁本体10の側部に形成される開口(流入口、流出口)の数や配置構成は、当該流路切換弁1の適用箇所等に応じて、適宜に変更できることは言うまでも無い。   In addition, it goes without saying that the number and arrangement configuration of the openings (inflow port, outflow port) formed in the side portion of the valve main body 10 can be appropriately changed according to the application place of the flow path switching valve 1 or the like. .

また、上記実施形態では、底部開口および左部開口を流入口p11、p12とし、前部開口および右部開口を流出口p13、p14とし、弁体20を約90°回転させることにより流路切換えを行うものとしたが、例えば、底部開口および前部開口を流入口、左部開口および右部開口を流出口とし、弁体の180°回転によって流路切換えを行うようにしても良いことは詳述するまでも無い。   In the above embodiment, the bottom opening and the left opening are the inlets p11 and p12, the front opening and the right opening are the outlets p13 and p14, and the valve body 20 is rotated by about 90 degrees. For example, the bottom opening and the front opening may be the inlet, the left opening and the right opening may be the outlet, and the flow path switching may be performed by the 180 ° rotation of the valve body. There is no need to elaborate.

また、上記実施形態の流路切換弁1は、車両におけるエンジンルーム内等(エンジン冷却用回路や電子機器冷却用回路等)の流路切換用に使用されるものとしているが、例えば給湯設備における流路切換用に使用しても良いことは勿論である。   In addition, although the flow passage switching valve 1 of the above embodiment is used for switching the flow passage in the engine room of the vehicle (engine cooling circuit, electronic device cooling circuit, etc.), for example, in the hot water supply facility Of course, it may be used for channel switching.

1 流路切換弁
9 モータ
10 弁本体
11 弁室
12 基体部材
13 嵌挿穴
15 下部ポート部材
16 嵌合穴
17 嵌合筒部
18 内周段差
20 弁体
21 下部大径部
22 鍔状係止部
23 Oリング
24 貫通口
25 筒状部
25a 凹部
25b 環状溝
26 シート材
27 Oリング(弾性部材)
28 弁軸
28a 胴部
28b 上部連結部
31 内部流路
32 外周流路
p11 流入口(底部開口)
p12 流入口(側部開口)
p13 流出口(側部開口)
p14 流出口(側部開口)
DESCRIPTION OF SYMBOLS 1 flow-path switching valve 9 motor 10 valve main body 11 valve chamber 12 base member 13 fitting insertion hole 15 lower port member 16 fitting hole 17 fitting cylindrical part 18 inner circumferential step 20 valve body 21 lower large diameter part 22 hook-shaped engagement Part 23 O ring 24 through hole 25 cylindrical part 25a concave part 25b annular groove 26 sheet material 27 O ring (elastic member)
28 valve shaft 28a body portion 28b upper connecting portion 31 internal flow path 32 outer peripheral flow path p11 inlet (bottom opening)
p12 inlet (side opening)
p13 outlet (side opening)
p14 outlet (side opening)

Claims (6)

弁室、該弁室の底部に開口せしめられた底部開口、及び、該弁室の側部に開口せしめられた少なくとも3個の側部開口を有する弁本体と、前記弁室内に回転自在に配在された筒状の弁体とを備え、前記弁体を回転させることにより、前記側部開口及び前記少なくとも3個の側部開口の連通状態を選択的に切り換えるようにされた流路切換弁であって、
前記弁体は、前記弁室の側部から所定の隙間をあけて該弁室内に配在されるとともに、前記弁体の回転に応じて前記底部開口と前記少なくとも3個の側部開口のいずれかとを択一的に連通させるべく、前記弁体の内部空間が前記底部開口と常時連通せしめられ、前記弁体の側部に、貫通口及び該貫通口周りから外向きに延びる筒状部が設けられ、該筒状部に、前記弁体回転時に前記弁室の側部に摺接するとともに該筒状部と前記少なくとも3個の側部開口のいずれかとの間をシールする環状のシート材が装着されており、
前記底部開口が流入口とされ、
前記少なくとも3個の側部開口は、少なくとも1個の流入口、該1個の流入口に連通する少なくとも1個の流出口、及び前記底部開口に連通する少なくとも1個の流出口を含むことを特徴とする流路切換弁。
A valve body having a valve chamber, a bottom opening which is open at the bottom of the valve chamber, and at least three side openings which are open at the sides of the valve chamber; A flow path switching valve, comprising: a tubular valve body, wherein the communication state of the side opening and the at least three side openings is selectively switched by rotating the valve body. And
The valve body is disposed in the valve chamber with a predetermined gap from the side of the valve chamber, and any of the bottom opening and the at least three side openings according to the rotation of the valve body. In order to communicate with the heel alternatively, the internal space of the valve body is always in communication with the bottom opening, and a through hole and a cylindrical portion extending outward from around the through hole are provided on the side of the valve body. An annular sheet material is provided, and in the cylindrical portion, the annular sheet is in sliding contact with the side portion of the valve chamber when the valve body rotates and seals between the cylindrical portion and any one of the at least three side openings. It is attached and
The bottom opening is an inlet;
The at least three side openings include at least one inlet, at least one outlet communicating with the one inlet, and at least one outlet communicating with the bottom opening. Flow path switching valve characterized by
前記筒状部と前記シート材との間に、該シート材を前記弁室の側部に付勢する弾性部材が介装されていることを特徴とする請求項1に記載の流路切換弁。   The flow path switching valve according to claim 1, wherein an elastic member for urging the sheet material to the side portion of the valve chamber is interposed between the cylindrical portion and the sheet material. . 前記シート材の外周部分を突出させるようにして、前記筒状部に設けられた凹部内に、前記弾性部材及び前記シート材がその順で収容されていることを特徴とする請求項2に記載の流路切換弁。   The elastic member and the sheet material are accommodated in this order in the recess provided in the cylindrical portion so as to cause the outer peripheral portion of the sheet material to protrude. Flow control valve. 前記弁体の天井部から突設された弁軸が前記弁室の天井部に設けられた嵌挿穴に摺動回転可能に内挿されるとともに、前記弁体の下部が前記弁室の底部に設けられた嵌合穴に摺動回転可能に内挿されていることを特徴とする請求項1から3のいずれか一項に記載の流路切換弁。   A valve shaft protruding from a ceiling of the valve body is slidably inserted into a fitting insertion hole provided in the ceiling of the valve chamber, and a lower portion of the valve is at a bottom of the valve chamber. The flow path switching valve according to any one of claims 1 to 3, wherein the flow path switching valve according to any one of claims 1 to 3, which is slidably inserted into a provided fitting hole. 前記弁本体は、前記弁室の側部を形成して前記側部開口が設けられた基体部材と、前記弁室の底部を形成して前記底部開口が設けられた下部ポート部材とを有していることを特徴とする請求項4に記載の流路切換弁。   The valve body has a base member forming a side of the valve chamber to provide the side opening, and a lower port member forming a bottom of the valve chamber to provide the bottom opening. The flow path switching valve according to claim 4, characterized in that: 前記下部ポート部材における前記底部開口の上側に前記嵌合穴が設けられていることを特徴とする請求項5に記載の流路切換弁。   The flow passage switching valve according to claim 5, wherein the fitting hole is provided on the upper side of the bottom opening in the lower port member.
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