WO2019187471A1 - Flow rate control valve - Google Patents

Flow rate control valve Download PDF

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Publication number
WO2019187471A1
WO2019187471A1 PCT/JP2019/000187 JP2019000187W WO2019187471A1 WO 2019187471 A1 WO2019187471 A1 WO 2019187471A1 JP 2019000187 W JP2019000187 W JP 2019000187W WO 2019187471 A1 WO2019187471 A1 WO 2019187471A1
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Prior art keywords
flow path
main valve
flow
pilot
control valve
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PCT/JP2019/000187
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French (fr)
Japanese (ja)
Inventor
尚史 小里
光次郎 渡
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株式会社Ｌｉｘｉｌ
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Publication of WO2019187471A1 publication Critical patent/WO2019187471A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like

Definitions

  • the present invention relates to a flow control valve, and more particularly to a pilot type flow control valve.
  • the pilot valve that adjusts the flow passage area of the pilot flow passage is provided in the axial direction in which the diaphragm valve moves, and therefore, the degree of freedom in layout of the components is low. There was a problem.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a flow control valve having a high degree of freedom in layout of components.
  • FIG. 1 is a schematic sectional view showing a closed state of a flow control valve 100 according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing the open state of the flow control valve 100 according to the embodiment of the present invention.
  • the flow control valve 100 may be applied to a faucet device, for example.
  • the flow control valve 100 is a pilot type flow control valve.
  • the flow control valve 100 includes a housing 10, a primary side flow path 12, a secondary side flow path 14, a main valve 16, a main valve seat 18, a back pressure chamber 20, and a lid portion 22.
  • the primary side flow path 12 and the secondary side flow path 14 are formed in the housing 10.
  • the primary side flow path 12 is a flow path into which fluid such as liquid or gas flows
  • the secondary side flow path 14 is a flow path from which fluid flows out.
  • the primary side flow path 12 and the secondary side flow path 14 form a main flow path through which a flow control target fluid of the flow control valve 100 according to the present embodiment flows.
  • the opening 12 a of the primary channel 12 is formed on the side surface of the housing 10, and the opening 14 a of the secondary channel 14 is formed on the bottom surface of the housing 10.
  • the main valve seat 18 is an annular valve seat and is formed at the upper end of the cylindrical portion 10 a that defines the secondary-side flow path 14 formed in the housing 10.
  • the main valve 16 is a diaphragm valve, and includes a hard main valve body 24 formed of a resin material or the like, and a diaphragm film 26 formed of an elastic material such as rubber. These have a substantially disk-shaped predetermined shape.
  • the main valve body 24 has an annular projecting portion 24a projecting downward, and the projecting portion 24a is fixed to the diaphragm membrane 26 in a state where the projecting portion 24a is inserted through a through hole 26a formed in the diaphragm membrane 26.
  • the diaphragm film 26 is attached to the inside of the housing 10 such that the peripheral edge portion is placed on the shoulder portion 10 b of the housing 10 and pressed by the bottom surface of the peripheral edge portion of the lid portion 22.
  • the lid portion 22 is attached so as to cover the back surface of the main valve 16.
  • the lid portion 22 defines a back pressure chamber 20 on the back side of the main valve 16.
  • the central portion of the diaphragm membrane 26, which is an elastic body, and the main valve body 24 fixed thereto have a predetermined axis in a state where the outer peripheral portion of the diaphragm membrane 26 is fixed to the housing 10 due to the pressure fluctuation of the back pressure chamber 20.
  • This movement changes the distance between the main valve 16 and the main valve seat 18 and opens and closes the main flow path.
  • the main flow path is closed when the main valve 16 is seated on the main valve seat 18, and the main flow path is opened when the main valve 16 is separated from the main valve seat 18.
  • the opening degree changes according to the distance between the main valve 16 and the main valve seat 18, and the flow rate of the fluid flowing through the main flow path changes.
  • the main valve 16 is formed with a communication hole 28 that penetrates the main valve body 24 and the diaphragm membrane 26 and communicates the back pressure chamber 20 and the primary flow path 12.
  • the communication hole 28 guides the fluid in the primary channel 12 to the back pressure chamber 20 and increases the pressure in the back pressure chamber 20.
  • the flow control valve 100 further includes a pilot flow path 30 that communicates with the back pressure chamber 20 and a pilot valve 32 that is provided in the pilot flow path 30 and adjusts the flow area of the pilot flow path 30.
  • the pilot flow path 30 has a function of drawing the fluid in the back pressure chamber 20 and reducing the pressure in the back pressure chamber 20.
  • the pilot flow path 30 may bypass the main valve 16 and communicate with the secondary flow path 14.
  • the pilot flow path 30 is formed so as to extend from the back pressure chamber 20 to the side, but the formation position and direction are not particularly limited.
  • the driving method of the pilot valve 32 is not particularly limited, and may be an automatic valve such as an electromagnetic valve or a manual valve.
  • the flow control valve 100 further includes a flow path area adjustment unit 34.
  • the flow channel area adjustment unit 34 has a function of adjusting the flow channel area of the communication hole 28 according to the movement of the main valve 16 in the axial direction.
  • the flow path area adjusting unit 34 includes a columnar fixed portion 34a and a tapered portion 34b provided at the tip of the fixed portion 34a.
  • the taper portion 34b is formed such that the cross section perpendicular to the axial direction becomes narrower as the tip is reached.
  • the flow path area adjustment unit 34 is configured so that the center axis of the flow path area adjustment unit 34 and the central axis of the communication hole 28 coincide with each other by embedding the fixing part 34 a in the hole 10 c formed in the housing 10. 10 is fixed.
  • the tapered portion of the flow path area adjusting unit 34. 34 b is in a state of being inserted into the communication hole 28. At this time, the flow passage area of the communication hole 28 is substantially closed by the tapered portion 34b.
  • the flow passage area of the communication hole 28 is not constant due to the provision of the flow passage area adjustment section 34, and changes according to the movement of the main valve 16 in the axial direction. Specifically, the flow passage area of the communication hole 28 becomes the smallest when the main valve 16 is seated on the main valve seat 18 (that is, the main valve 16 is closed). The distance increases as the distance from the valve seat 18 increases (that is, as the opening of the main valve 16 increases).
  • the flow control valve 100 is configured such that the flow passage area of the communication hole 28 changes in accordance with the axial movement of the main valve 16.
  • the opening degree of the main valve 16 can be controlled by adjusting the flow passage area of the passage 30.
  • the layout is limited so that the pilot valve is arranged in the axial direction in which the main valve moves, and the size of the flow control valve in the axial direction is limited. It was difficult to suppress.
  • the flow control valve 100 of the present embodiment it is only necessary to be able to change the flow passage area of the pilot flow passage 30, so the main valve 16 moves the pilot valve 32 for changing the flow passage area of the pilot flow passage 30. It is not necessary to provide in the axial direction, and the size in the axial direction can be suppressed.
  • the layout of the constituent elements can be changed according to the device to which the flow control valve 100 is applied (for example, a faucet device). A flow control valve can be realized.
  • the taper part 34b of the flow path area adjusting part 34 only needs to have a shape in which the flow path area of the communication hole 28 increases as the opening of the main valve 16 increases.
  • the tapered portion 34b may be, for example, a truncated cone shape such as a truncated cone or a truncated pyramid, or a truncated cone shape such as a cone or a pyramid. Considering the strength of the tip, a frustum shape is preferable.
  • the inclination angle and length of the tapered portion 34b can be appropriately set according to the desired characteristics of the flow control valve. Further, the tapered portion 34b may be linear as illustrated in FIG. 1 or may be curved. These can also be set as appropriate according to the characteristics of the desired flow control valve.
  • the flow path area adjustment unit 34 is inserted into the communication hole 28. This is because, for example, when the flow path area adjustment unit 34 is clogged with foreign matter, the flow path area adjustment unit 34 is provided. It also has an effect of eliminating clogging by pressing foreign matter.
  • the flow path area adjustment unit 34 is configured as a member different from the housing 10, but the flow path area adjustment unit 34 may be configured integrally with the housing 10.
  • the flow path area adjusting portion 34 is a separate member from the housing 10 in which the flow path area adjusting portion 34 is provided, the degree of freedom of the material forming the flow path area adjusting portion 34 is increased.
  • the flow path area adjustment unit 34 may be formed of an elastic material. In this case, for example, when a foreign substance comes into contact with the flow path area adjustment unit 34, there is an effect that the flow path area adjustment unit 34 can be hardly broken.
  • a flow control valve includes a primary flow path through which fluid flows, a secondary flow path from which fluid flows out, and a main flow path provided between the primary flow path and the secondary flow path.
  • a valve seat and a main valve which are formed on the back side of the main valve, the main valve seat and the main valve in which the opening degree of the main valve relative to the main valve seat is adjusted by moving the main valve in a predetermined axial direction.
  • the back pressure chamber, the communication hole formed in the main valve so as to communicate the primary side flow path and the back pressure chamber, the pilot flow path communicating with the back pressure chamber, and the flow area of the pilot flow path is adjusted.
  • a pilot valve and a flow channel area adjusting unit that adjusts the flow channel area of the communication hole according to the axial movement of the main valve are provided.
  • the flow path area adjustment unit may be formed such that the flow path area of the communication hole increases as the opening of the main valve increases.
  • the flow path area adjusting portion may have a tapered portion that is inserted into the communication hole when the main valve is closed.
  • the housing may further include a housing in which a primary channel and a secondary channel are formed, and the channel area adjusting unit may be configured as a member different from the housing.
  • the degree of freedom of the material forming the flow path area adjusting portion can be increased.
  • the flow path area adjustment unit may be formed of an elastic material. In this case, for example, when a foreign object comes into contact with the flow path area adjustment unit, the flow path area adjustment unit can be made difficult to break.
  • the pilot channel may communicate with the secondary channel without passing through the main valve.
  • the present invention can be used for a flow control valve used in a faucet device.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

A flow rate control valve 100 is provided with: a primary-side flow passage 12 into which fluid flows; a secondary-side flow passage 14 from which fluid flows; a main valve seat 18 and a diaphragm-type main valve 16, which are provided between the primary-side flow passage 12 and the secondary-side flow passage 14; a back pressure chamber 20 formed on the back surface side of the main valve 16; a communication hole 28 formed in the main valve 16 to provide communication between the primary-side flow passage 12 and the back-pressure chamber 20; a pilot flow passage 30 communicating with the back-pressure chamber 20; a pilot valve 32 which adjusts the flow passage area of the pilot flow passage 30; and a flow passage area adjustment section 34 which adjusts the flow passage area of the communication hole 28 in accordance with the axial movement of the main valve 16.

Description

流量制御弁Flow control valve
　本発明は、流量制御弁に関し、特にパイロット型流量制御弁に関する。 The present invention relates to a flow control valve, and more particularly to a pilot type flow control valve.
　従来より、所定の軸方向に移動するダイヤフラム弁と、軸方向に進退可能に設けられ、パイロット流路の流路面積を調節するパイロット弁と、ダイヤフラム弁の背面側に設けられる背圧室とを備えるパイロット型の流量制御弁が知られている。このような流量制御弁では、パイロット弁の軸方向位置を制御することで背圧室の圧力を調節してダイヤフラム弁の開度を変化させ、ダイヤフラム弁を通過する流量を制御することができる（例えば特許文献１参照）。 Conventionally, a diaphragm valve that moves in a predetermined axial direction, a pilot valve that is provided so as to be movable back and forth in the axial direction and adjusts the flow passage area of the pilot flow path, and a back pressure chamber that is provided on the back side of the diaphragm valve are provided. A pilot-type flow control valve provided is known. In such a flow rate control valve, the axial position of the pilot valve is controlled to adjust the pressure in the back pressure chamber to change the opening degree of the diaphragm valve, thereby controlling the flow rate passing through the diaphragm valve ( For example, see Patent Document 1).
特開２０１６－７０３４０号公報JP 2016-70340 A
　しかしながら、このような構成のパイロット型の流量制御弁の場合、パイロット流路の流路面積を調節するパイロット弁がダイヤフラム弁が移動する軸方向に設けられるため、構成要素のレイアウトの自由度が低いという課題があった。 However, in the case of the pilot type flow control valve having such a configuration, the pilot valve that adjusts the flow passage area of the pilot flow passage is provided in the axial direction in which the diaphragm valve moves, and therefore, the degree of freedom in layout of the components is low. There was a problem.
　本発明は、斯かる事情に鑑みてなされたものであり、その目的とするところは、構成要素のレイアウトの自由度が高い流量制御弁を提供することにある。 The present invention has been made in view of such circumstances, and an object of the present invention is to provide a flow control valve having a high degree of freedom in layout of components.
　上記課題を解決するために、本発明のある態様の流量制御弁は、流体が流入する一次側流路と、流体が流出する二次側流路と、一次側流路と二次側流路との間に設けられた主弁座および主弁であって、主弁が所定の軸方向に移動することで主弁座に対する主弁の開度が調節される主弁座および主弁と、主弁の背面側に形成される背圧室と、一次側流路と背圧室とを連通するよう主弁に形成された連通孔と、背圧室に連通するパイロット流路と、パイロット流路の流路面積を調節するパイロット弁と、主弁の軸方向の移動に応じて、連通孔の流路面積を調節する流路面積調節部と、を備える。 In order to solve the above-described problems, a flow control valve according to an aspect of the present invention includes a primary side flow path into which a fluid flows, a secondary side flow path from which a fluid flows out, a primary side flow path, and a secondary side flow path. A main valve seat and a main valve provided between the main valve seat and the main valve, wherein the opening of the main valve relative to the main valve seat is adjusted by moving the main valve in a predetermined axial direction, A back pressure chamber formed on the back side of the main valve, a communication hole formed in the main valve so as to communicate the primary side flow path and the back pressure chamber, a pilot flow path communicating with the back pressure chamber, and a pilot flow A pilot valve that adjusts the flow passage area of the passage; and a flow passage area adjustment section that adjusts the flow passage area of the communication hole in accordance with the axial movement of the main valve.
　本発明によれば、構成要素のレイアウトの自由度が高い流量制御弁を提供できる。 According to the present invention, it is possible to provide a flow control valve having a high degree of freedom in layout of components.
本発明の実施形態に係る流量制御弁の閉弁状態を示す概略断面図である。It is a schematic sectional drawing which shows the valve closing state of the flow control valve concerning embodiment of this invention. 本発明の実施形態に係る流量制御弁の開弁状態を示す概略断面図である。It is a schematic sectional drawing which shows the valve opening state of the flow control valve concerning embodiment of this invention.
　以下、本発明を好適な実施形態をもとに図面を参照しながら説明する。各図面に示される同一または同等の構成要素、部材には、同一の符号を付するものとし、適宜重複した説明は省略する。また、各図面における部材の寸法は、理解を容易にするために適宜拡大、縮小して示される。また、各図面において実施形態を説明する上で重要ではない部材の一部は省略して表示する。 Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. The same or equivalent components and members shown in the drawings are denoted by the same reference numerals, and repeated descriptions are appropriately omitted. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. In addition, in the drawings, some of the members that are not important for describing the embodiment are omitted.
　図１は、本発明の実施形態に係る流量制御弁１００の閉弁状態を示す概略断面図である。図２は、本発明の実施形態に係る流量制御弁１００の開弁状態を示す概略断面図である。流量制御弁１００は、例えば水栓装置に適用されてよい。 FIG. 1 is a schematic sectional view showing a closed state of a flow control valve 100 according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view showing the open state of the flow control valve 100 according to the embodiment of the present invention. The flow control valve 100 may be applied to a faucet device, for example.
　本実施形態に係る流量制御弁１００は、パイロット型の流量制御弁である。流量制御弁１００は、ハウジング１０と、一次側流路１２と、二次側流路１４と、主弁１６と、主弁座１８と、背圧室２０と、蓋部２２とを備える。 The flow control valve 100 according to the present embodiment is a pilot type flow control valve. The flow control valve 100 includes a housing 10, a primary side flow path 12, a secondary side flow path 14, a main valve 16, a main valve seat 18, a back pressure chamber 20, and a lid portion 22.
　一次側流路１２および二次側流路１４はハウジング１０に形成される。一次側流路１２は、液体や気体などの流体が流入する流路であり、二次側流路１４は、流体が流出する流路である。一次側流路１２および二次側流路１４は、本実施形態に係る流量制御弁１００の流量制御対象の流体が流れる主流路を形成している。一次側流路１２の開口部１２ａはハウジング１０の側面に形成され、二次側流路１４の開口部１４ａはハウジング１０の底面に形成されている。 The primary side flow path 12 and the secondary side flow path 14 are formed in the housing 10. The primary side flow path 12 is a flow path into which fluid such as liquid or gas flows, and the secondary side flow path 14 is a flow path from which fluid flows out. The primary side flow path 12 and the secondary side flow path 14 form a main flow path through which a flow control target fluid of the flow control valve 100 according to the present embodiment flows. The opening 12 a of the primary channel 12 is formed on the side surface of the housing 10, and the opening 14 a of the secondary channel 14 is formed on the bottom surface of the housing 10.
　一次側流路１２と二次側流路１４との間には、主弁１６と、主弁１６が着座する主弁座１８が設けられている。主弁座１８は、環状の弁座であり、ハウジング１０内に形成された二次側流路１４を規定する円筒部１０ａの上端に形成される。 Between the primary side flow path 12 and the secondary side flow path 14, a main valve 16 and a main valve seat 18 on which the main valve 16 is seated are provided. The main valve seat 18 is an annular valve seat and is formed at the upper end of the cylindrical portion 10 a that defines the secondary-side flow path 14 formed in the housing 10.
　主弁１６は、ダイヤフラム式の弁であり、樹脂材料などによって形成される硬質の主弁本体２４と、ゴムなどの弾性材料によって形成されるダイヤフラム膜２６と、を含む。これらは略円板状の所定の形状を有する。主弁本体２４は、下向きに突出する環状の突出部２４ａを有し、この突出部２４ａがダイヤフラム膜２６に形成された貫通孔２６ａを挿通した状態でダイヤフラム膜２６に対して固定される。ダイヤフラム膜２６は、周縁部がハウジング１０の肩部１０ｂに載せられ、蓋部２２の周縁部の底面によって押圧されるようにしてハウジング１０の内部に取り付けられる。 The main valve 16 is a diaphragm valve, and includes a hard main valve body 24 formed of a resin material or the like, and a diaphragm film 26 formed of an elastic material such as rubber. These have a substantially disk-shaped predetermined shape. The main valve body 24 has an annular projecting portion 24a projecting downward, and the projecting portion 24a is fixed to the diaphragm membrane 26 in a state where the projecting portion 24a is inserted through a through hole 26a formed in the diaphragm membrane 26. The diaphragm film 26 is attached to the inside of the housing 10 such that the peripheral edge portion is placed on the shoulder portion 10 b of the housing 10 and pressed by the bottom surface of the peripheral edge portion of the lid portion 22.
　蓋部２２は、主弁１６の背面を覆うように取り付けられる。蓋部２２は、主弁１６の背面側に背圧室２０を画成する。 The lid portion 22 is attached so as to cover the back surface of the main valve 16. The lid portion 22 defines a back pressure chamber 20 on the back side of the main valve 16.
　弾性体であるダイヤフラム膜２６の中心部分とそこに固定された主弁本体２４とは、背圧室２０の圧力変動により、ダイヤフラム膜２６の外周部分がハウジング１０に固定された状態で所定の軸Ａｘの方向（上下方向）に移動する。この移動によって主弁１６と主弁座１８との距離が変化し、主流路が開閉する。具体的には、主弁１６が主弁座１８に着座することによって主流路が閉じ、主弁１６が主弁座１８から離れることによって主流路が開く。また、主弁１６と主弁座１８との距離に応じて開度が変化し、主流路を流れる流体の流量が変化する。 The central portion of the diaphragm membrane 26, which is an elastic body, and the main valve body 24 fixed thereto have a predetermined axis in a state where the outer peripheral portion of the diaphragm membrane 26 is fixed to the housing 10 due to the pressure fluctuation of the back pressure chamber 20. Move in the direction of Ax (vertical direction). This movement changes the distance between the main valve 16 and the main valve seat 18 and opens and closes the main flow path. Specifically, the main flow path is closed when the main valve 16 is seated on the main valve seat 18, and the main flow path is opened when the main valve 16 is separated from the main valve seat 18. Further, the opening degree changes according to the distance between the main valve 16 and the main valve seat 18, and the flow rate of the fluid flowing through the main flow path changes.
　主弁１６には、主弁本体２４およびダイヤフラム膜２６を貫通して、背圧室２０と一次側流路１２とを連通する連通孔２８が形成されている。この連通孔２８は、一次側流路１２内の流体を背圧室２０に導いて、背圧室２０の圧力を増大させる。 The main valve 16 is formed with a communication hole 28 that penetrates the main valve body 24 and the diaphragm membrane 26 and communicates the back pressure chamber 20 and the primary flow path 12. The communication hole 28 guides the fluid in the primary channel 12 to the back pressure chamber 20 and increases the pressure in the back pressure chamber 20.
　本実施形態に係る流量制御弁１００はさらに、背圧室２０に連通するパイロット流路３０と、パイロット流路３０に設けられ、パイロット流路３０の流路面積を調節するパイロット弁３２とを備える。パイロット流路３０は、背圧室２０内の流体を抜いて背圧室２０の圧力を減少させる機能を有する。パイロット流路３０は、主弁１６を通ることなく迂回して二次側流路１４に連通してよい。 The flow control valve 100 according to the present embodiment further includes a pilot flow path 30 that communicates with the back pressure chamber 20 and a pilot valve 32 that is provided in the pilot flow path 30 and adjusts the flow area of the pilot flow path 30. . The pilot flow path 30 has a function of drawing the fluid in the back pressure chamber 20 and reducing the pressure in the back pressure chamber 20. The pilot flow path 30 may bypass the main valve 16 and communicate with the secondary flow path 14.
　本実施形態では、パイロット流路３０は、背圧室２０から側方に向かって延びるように形成されているが、その形成位置、方向は特に限定されない。パイロット弁３２の駆動方式は特に限定されず、例えば電磁弁等の自動弁であってもよいし、手動弁であってもよい。 In this embodiment, the pilot flow path 30 is formed so as to extend from the back pressure chamber 20 to the side, but the formation position and direction are not particularly limited. The driving method of the pilot valve 32 is not particularly limited, and may be an automatic valve such as an electromagnetic valve or a manual valve.
　本実施形態に係る流量制御弁１００はさらに、流路面積調節部３４を備える。流路面積調節部３４は、主弁１６の軸方向の移動に応じて、連通孔２８の流路面積を調節する機能を有する。流路面積調節部３４は、円柱状の固定部３４ａと、固定部３４ａの先端に設けられたテーパ部３４ｂとを備える。テーパ部３４ｂは先端になるほど軸方向に垂直な断面が細くなるよう形成されている。流路面積調節部３４は、固定部３４ａがハウジング１０に形成された穴部１０ｃに埋め込まれることにより、流路面積調節部３４の中心軸と連通孔２８の中心軸が一致するように、ハウジング１０に固定される。 The flow control valve 100 according to the present embodiment further includes a flow path area adjustment unit 34. The flow channel area adjustment unit 34 has a function of adjusting the flow channel area of the communication hole 28 according to the movement of the main valve 16 in the axial direction. The flow path area adjusting unit 34 includes a columnar fixed portion 34a and a tapered portion 34b provided at the tip of the fixed portion 34a. The taper portion 34b is formed such that the cross section perpendicular to the axial direction becomes narrower as the tip is reached. The flow path area adjustment unit 34 is configured so that the center axis of the flow path area adjustment unit 34 and the central axis of the communication hole 28 coincide with each other by embedding the fixing part 34 a in the hole 10 c formed in the housing 10. 10 is fixed.
　図１に示すように、パイロット弁３２が閉じられ、主弁１６が閉じられている（すなわち、主弁１６が主弁座１８に着座している）とき、流路面積調節部３４のテーパ部３４ｂは連通孔２８に挿入された状態となっている。このとき、連通孔２８の流路面積は、テーパ部３４ｂによってほぼ塞がれた状態となっている。 As shown in FIG. 1, when the pilot valve 32 is closed and the main valve 16 is closed (that is, the main valve 16 is seated on the main valve seat 18), the tapered portion of the flow path area adjusting unit 34. 34 b is in a state of being inserted into the communication hole 28. At this time, the flow passage area of the communication hole 28 is substantially closed by the tapered portion 34b.
　図２に示すように、パイロット弁３２が開かれると、パイロット流路３０にパイロット流が生じるため、背圧室２０の圧力が減少する。背圧室２０の圧力が減少すると、主弁１６は上方に移動して主弁座１８からダイヤフラム膜２６が離れるので、一次側流路１２から二次側流路１４に流体が流れる。このとき、主弁１６は、背圧室２０からパイロット流路３０に抜ける流量と、連通孔２８を介して一次側流路１２から背圧室２０に入る流量とが等しくなるように移動する。 As shown in FIG. 2, when the pilot valve 32 is opened, a pilot flow is generated in the pilot flow path 30, so that the pressure in the back pressure chamber 20 decreases. When the pressure in the back pressure chamber 20 decreases, the main valve 16 moves upward and the diaphragm membrane 26 is separated from the main valve seat 18, so that the fluid flows from the primary side flow path 12 to the secondary side flow path 14. At this time, the main valve 16 moves so that the flow rate from the back pressure chamber 20 to the pilot flow channel 30 is equal to the flow rate entering the back pressure chamber 20 from the primary flow channel 12 via the communication hole 28.
　本実施形態において、連通孔２８の流路面積は、流路面積調節部３４が設けられていることにより、一定ではなく、主弁１６の軸方向の移動に応じて変化する。具体的には、連通孔２８の流路面積は、主弁１６が主弁座１８に着座している（すなわち主弁１６が閉弁されている）ときに最も小さくなり、主弁１６が主弁座１８から離れるにつれて（すなわち主弁１６の開度が大きくなるにつれて）大きくなる。 In the present embodiment, the flow passage area of the communication hole 28 is not constant due to the provision of the flow passage area adjustment section 34, and changes according to the movement of the main valve 16 in the axial direction. Specifically, the flow passage area of the communication hole 28 becomes the smallest when the main valve 16 is seated on the main valve seat 18 (that is, the main valve 16 is closed). The distance increases as the distance from the valve seat 18 increases (that is, as the opening of the main valve 16 increases).
　パイロット弁３２の操作によりパイロット流路３０の流路面積を大きくすると、パイロット流路３０に抜ける流量が増加するので、一次側流路１２から背圧室２０に入る流量が増加する方向に主弁１６が移動する。すなわち、連通孔２８の流路面積が大きくなるように主弁１６は上方に移動する（主弁１６の開度は大きくなる）。一方、パイロット弁３２の操作によりパイロット流路３０の流路面積を小さくすると、パイロット流路３０に抜ける流量が減少するので、一次側流路１２から背圧室２０に入る流量が減少する方向に主弁１６が移動する。すなわち、連通孔２８の流路面積が小さくなるように主弁１６は下方に移動する（主弁１６の開度は小さくなる）。このように本実施形態に係る流量制御弁１００では、主弁１６の軸方向の移動に応じて連通孔２８の流路面積が変化するよう構成されているので、パイロット弁３２の操作によりパイロット流路３０の流路面積を調節することにより、主弁１６の開度を制御することができる。 When the flow passage area of the pilot flow passage 30 is increased by the operation of the pilot valve 32, the flow rate flowing into the pilot flow passage 30 increases, so the main valve in a direction in which the flow rate entering the back pressure chamber 20 from the primary flow passage 12 increases. 16 moves. That is, the main valve 16 moves upward so that the flow path area of the communication hole 28 increases (the opening degree of the main valve 16 increases). On the other hand, if the flow passage area of the pilot flow passage 30 is reduced by operating the pilot valve 32, the flow rate flowing into the pilot flow passage 30 decreases, so that the flow rate entering the back pressure chamber 20 from the primary flow passage 12 decreases. The main valve 16 moves. That is, the main valve 16 moves downward so that the flow path area of the communication hole 28 is reduced (the opening degree of the main valve 16 is reduced). As described above, the flow control valve 100 according to the present embodiment is configured such that the flow passage area of the communication hole 28 changes in accordance with the axial movement of the main valve 16. The opening degree of the main valve 16 can be controlled by adjusting the flow passage area of the passage 30.
　例えば特許文献１に示すような従来のパイロット型の流量制御弁では、主弁が移動する軸方向にパイロット弁を配置するようレイアウトが制限されており、また流量制御弁の軸方向の大きさを抑制することが難しかった。本実施形態の流量制御弁１００によれば、単にパイロット流路３０の流路面積を変えることができればよいので、パイロット流路３０の流路面積を変えるためのパイロット弁３２を主弁１６が移動する軸方向に設ける必要はなく、軸方向の大きさを抑制できる。このように本実施形態の流量制御弁１００によれば、流量制御弁１００を適用する装置（例えば水栓装置など）に応じて構成要素のレイアウトを変えることができるなど、レイアウトの自由度が高い流量制御弁を実現できる。 For example, in a conventional pilot type flow control valve as shown in Patent Document 1, the layout is limited so that the pilot valve is arranged in the axial direction in which the main valve moves, and the size of the flow control valve in the axial direction is limited. It was difficult to suppress. According to the flow control valve 100 of the present embodiment, it is only necessary to be able to change the flow passage area of the pilot flow passage 30, so the main valve 16 moves the pilot valve 32 for changing the flow passage area of the pilot flow passage 30. It is not necessary to provide in the axial direction, and the size in the axial direction can be suppressed. As described above, according to the flow control valve 100 of the present embodiment, the layout of the constituent elements can be changed according to the device to which the flow control valve 100 is applied (for example, a faucet device). A flow control valve can be realized.
　流路面積調節部３４のテーパ部３４ｂは、主弁１６の開度が大きくなるにつれて連通孔２８の流路面積が大きくなる形状であればよい。テーパ部３４ｂは、例えば、円錐台や角錐台などの錐台形状や、円錐や角錐などの錐体形状であってよい。先端部の強度を考慮すると、錐台形状が好ましい。また、テーパ部３４ｂの傾斜角や長さは、所望の流量制御弁の特性に応じて適宜設定することができる。また、テーパ部３４ｂは、図１に図示されるように直線状であってもよいし、曲線状であってもよい。これらも、所望の流量制御弁の特性に応じて適宜設定することができる。 The taper part 34b of the flow path area adjusting part 34 only needs to have a shape in which the flow path area of the communication hole 28 increases as the opening of the main valve 16 increases. The tapered portion 34b may be, for example, a truncated cone shape such as a truncated cone or a truncated pyramid, or a truncated cone shape such as a cone or a pyramid. Considering the strength of the tip, a frustum shape is preferable. Further, the inclination angle and length of the tapered portion 34b can be appropriately set according to the desired characteristics of the flow control valve. Further, the tapered portion 34b may be linear as illustrated in FIG. 1 or may be curved. These can also be set as appropriate according to the characteristics of the desired flow control valve.
　本実施形態では、連通孔２８に流路面積調節部３４が挿入される構成となっているが、これは、例えば流路面積調節部３４に異物が詰まった場合に、流路面積調節部３４で異物を押圧等して詰まりを解消する効果も有する。 In the present embodiment, the flow path area adjustment unit 34 is inserted into the communication hole 28. This is because, for example, when the flow path area adjustment unit 34 is clogged with foreign matter, the flow path area adjustment unit 34 is provided. It also has an effect of eliminating clogging by pressing foreign matter.
　上記実施形態では、流路面積調節部３４をハウジング１０とは別の部材として構成したが、流路面積調節部３４はハウジング１０と一体に構成されてもよい。流路面積調節部３４をそれが設けられるハウジング１０と別部材とした場合は、流路面積調節部３４を形成する材料の自由度が高まる。例えば、ハウジング１０を金属で形成する場合、流路面積調節部３４は弾性材料で形成されてもよい。この場合、例えば流路面積調節部３４に異物が接触した場合に、流路面積調節部３４を折れにくくすることができるという効果がある。 In the above embodiment, the flow path area adjustment unit 34 is configured as a member different from the housing 10, but the flow path area adjustment unit 34 may be configured integrally with the housing 10. When the flow path area adjusting portion 34 is a separate member from the housing 10 in which the flow path area adjusting portion 34 is provided, the degree of freedom of the material forming the flow path area adjusting portion 34 is increased. For example, when the housing 10 is formed of metal, the flow path area adjustment unit 34 may be formed of an elastic material. In this case, for example, when a foreign substance comes into contact with the flow path area adjustment unit 34, there is an effect that the flow path area adjustment unit 34 can be hardly broken.
　以上、本発明の実施形態をもとに説明した。これらの実施形態は例示であり、いろいろな変形および変更が本発明の特許請求範囲内で可能なこと、またそうした変形例および変更も本発明の特許請求の範囲にあることは当業者に理解されるところである。従って、本明細書での記述および図面は限定的ではなく例証的に扱われるべきものである。 The description has been given based on the embodiment of the present invention. Those skilled in the art will appreciate that these embodiments are illustrative, and that various modifications and changes are possible within the scope of the present invention, and that such modifications and changes are also within the scope of the present invention. It is a place. Accordingly, the description and drawings herein are to be regarded as illustrative rather than restrictive.
　以上の記載から、下記の発明が認識される。 From the above description, the following invention is recognized.
　本発明のある態様の流量制御弁は、流体が流入する一次側流路と、流体が流出する二次側流路と、一次側流路と二次側流路との間に設けられた主弁座および主弁であって、主弁が所定の軸方向に移動することで主弁座に対する主弁の開度が調節される主弁座および主弁と、主弁の背面側に形成される背圧室と、一次側流路と背圧室とを連通するよう主弁に形成された連通孔と、背圧室に連通するパイロット流路と、パイロット流路の流路面積を調節するパイロット弁と、主弁の軸方向の移動に応じて、連通孔の流路面積を調節する流路面積調節部と、を備える。 A flow control valve according to an aspect of the present invention includes a primary flow path through which fluid flows, a secondary flow path from which fluid flows out, and a main flow path provided between the primary flow path and the secondary flow path. A valve seat and a main valve, which are formed on the back side of the main valve, the main valve seat and the main valve in which the opening degree of the main valve relative to the main valve seat is adjusted by moving the main valve in a predetermined axial direction. The back pressure chamber, the communication hole formed in the main valve so as to communicate the primary side flow path and the back pressure chamber, the pilot flow path communicating with the back pressure chamber, and the flow area of the pilot flow path is adjusted. A pilot valve and a flow channel area adjusting unit that adjusts the flow channel area of the communication hole according to the axial movement of the main valve are provided.
　この態様によると、単にパイロット流路の流路面積を変えることができればよいので、パイロットの流路面積を変えるためのパイロット弁を主弁が移動する軸方向に設ける必要はなく、レイアウトの自由度が高い流量制御弁を実現できる。 According to this aspect, since it is only necessary to change the flow passage area of the pilot flow passage, it is not necessary to provide a pilot valve for changing the pilot flow passage area in the axial direction in which the main valve moves, and the degree of freedom in layout High flow control valve can be realized.
　流路面積調節部は、主弁の開度が大きくなるにつれて、連通孔の流路面積が大きくなるよう形成されてもよい。流路面積調節部は、主弁が閉弁されているときに連通孔に挿入された状態となるテーパ部を有してもよい。 The flow path area adjustment unit may be formed such that the flow path area of the communication hole increases as the opening of the main valve increases. The flow path area adjusting portion may have a tapered portion that is inserted into the communication hole when the main valve is closed.
　一次側流路および二次側流路が形成されるハウジングをさらに備え、流路面積調節部は、ハウジングとは別の部材として構成されてもよい。流路面積調節部とハウジングを別の部材とした場合、流路面積調節部を形成する材料の自由度を高めることができる。 The housing may further include a housing in which a primary channel and a secondary channel are formed, and the channel area adjusting unit may be configured as a member different from the housing. When the flow path area adjusting portion and the housing are separate members, the degree of freedom of the material forming the flow path area adjusting portion can be increased.
　流路面積調節部は、弾性材料で形成されてもよい。この場合、例えば流路面積調節部に異物が接触した場合に、流路面積調節部を折れにくくすることができる。 The flow path area adjustment unit may be formed of an elastic material. In this case, for example, when a foreign object comes into contact with the flow path area adjustment unit, the flow path area adjustment unit can be made difficult to break.
　パイロット流路は、主弁を通ることなく二次側流路に連通していてもよい。このような構成とすることで、軸方向の大きさが小さい流量制御弁を実現できる。 The pilot channel may communicate with the secondary channel without passing through the main valve. By setting it as such a structure, the flow control valve with a small magnitude | size of an axial direction is realizable.
　１０　ハウジング、　１２　一次側流路、　１４　二次側流路、　１６　主弁、　１８　主弁座、　２０　背圧室、　２２　蓋部、　２４　主弁本体、　２６　ダイヤフラム膜、　２８　連通孔、　３０　パイロット流路、　３２　パイロット弁、　３４　流路面積調節部、　１００　流量制御弁。 10 housing, 12 primary flow path, 14 secondary flow path, 16 main valve, 18 main valve seat, 20 back pressure chamber, 22 lid, 24 main valve body, 26 diaphragm membrane, 28 communication holes, 30 pilot flow Road, 32 pilot valves, 34 flow path area adjustment section, 100 flow control valve.
　本発明は、水栓装置に用いられる流量制御弁に利用できる。 The present invention can be used for a flow control valve used in a faucet device.

Claims (6)

  1. 　流体が流入する一次側流路と、
    　流体が流出する二次側流路と、
    　前記一次側流路と前記二次側流路との間に設けられた主弁座および主弁であって、前記主弁が所定の軸方向に移動することで前記主弁座に対する前記主弁の開度が調節される主弁座および主弁と、
    　前記主弁の背面側に形成される背圧室と、
    　前記一次側流路と前記背圧室とを連通するよう前記主弁に形成された連通孔と、
    　前記背圧室に連通するパイロット流路と、
    　前記パイロット流路の流路面積を調節するパイロット弁と、
    　前記主弁の軸方向の移動に応じて、前記連通孔の流路面積を調節する流路面積調節部と、
    　を備えることを特徴とする流量制御弁。     A primary flow path through which fluid flows;
    A secondary flow path through which the fluid flows;
    A main valve seat and a main valve provided between the primary side flow path and the secondary side flow path, wherein the main valve moves relative to the main valve seat by moving in a predetermined axial direction. A main valve seat and a main valve whose opening degree is adjusted,
    A back pressure chamber formed on the back side of the main valve;
    A communication hole formed in the main valve so as to communicate the primary side flow path and the back pressure chamber;
    A pilot flow path communicating with the back pressure chamber;
    A pilot valve for adjusting a flow passage area of the pilot flow passage;
    A flow channel area adjusting unit that adjusts a flow channel area of the communication hole according to the movement of the main valve in the axial direction;
    A flow control valve comprising:
  2. 　前記流路面積調節部は、前記主弁の開度が大きくなるにつれて、前記連通孔の流路面積が大きくなるよう形成されることを特徴とする請求項１に記載の流量制御弁。 2. The flow rate control valve according to claim 1, wherein the flow path area adjusting portion is formed such that the flow path area of the communication hole increases as the opening of the main valve increases.
  3. 　前記流路面積調節部は、前記主弁が閉弁されているときに前記連通孔に挿入された状態となるテーパ部を有することを特徴とする請求項１または２に記載の流量制御弁。 The flow rate control valve according to claim 1 or 2, wherein the flow path area adjusting portion has a tapered portion that is inserted into the communication hole when the main valve is closed.
  4. 　前記流路面積調節部が設けられるハウジングをさらに備え、
    　前記流路面積調節部は、前記ハウジングとは別の部材として構成されることを特徴とする請求項１から３のいずれかに記載の流量制御弁。     Further comprising a housing provided with the flow path area adjustment unit,
    The flow rate control valve according to any one of claims 1 to 3, wherein the flow path area adjustment unit is configured as a member different from the housing.
  5. 　前記流路面積調節部は、弾性材料で形成されることを特徴とする請求項１から４のいずれかに記載の流量制御弁。 The flow rate control valve according to any one of claims 1 to 4, wherein the flow path area adjusting portion is formed of an elastic material.
  6. 　前記パイロット流路は、前記主弁を通ることなく前記二次側流路に連通していることを特徴とする請求項１から５のいずれかに記載の流量制御弁。 The flow rate control valve according to any one of claims 1 to 5, wherein the pilot flow path communicates with the secondary flow path without passing through the main valve.
PCT/JP2019/000187 2018-03-29 2019-01-08 Flow rate control valve WO2019187471A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02144076U (en) * 1989-05-08 1990-12-06
JP2002250452A (en) * 2000-12-18 2002-09-06 Toto Ltd Diaphragm valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0995991A (en) * 1995-10-02 1997-04-08 Toto Ltd Valve device of flushing device
JP2005315404A (en) * 2004-03-31 2005-11-10 Toto Ltd Diaphragm type opening and closing valve
JP6628968B2 (en) * 2015-02-10 2020-01-15 特許機器株式会社 Fluid servo valve and fluid servo device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02144076U (en) * 1989-05-08 1990-12-06
JP2002250452A (en) * 2000-12-18 2002-09-06 Toto Ltd Diaphragm valve

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