JP3392241B2 - Water governor - Google Patents

Water governor

Info

Publication number
JP3392241B2
JP3392241B2 JP28845094A JP28845094A JP3392241B2 JP 3392241 B2 JP3392241 B2 JP 3392241B2 JP 28845094 A JP28845094 A JP 28845094A JP 28845094 A JP28845094 A JP 28845094A JP 3392241 B2 JP3392241 B2 JP 3392241B2
Authority
JP
Japan
Prior art keywords
center core
water governor
flow rate
recess
flow path
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP28845094A
Other languages
Japanese (ja)
Other versions
JPH08145213A (en
Inventor
正邦 海沼
幸一 神山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujikura Composites Inc
Original Assignee
Fujikura Rubber Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujikura Rubber Ltd filed Critical Fujikura Rubber Ltd
Priority to JP28845094A priority Critical patent/JP3392241B2/en
Publication of JPH08145213A publication Critical patent/JPH08145213A/en
Application granted granted Critical
Publication of JP3392241B2 publication Critical patent/JP3392241B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【技術分野】本発明は、水ガバナー(簡易流量制限装
置)に関する。
TECHNICAL FIELD The present invention relates to a water governor (simple flow restriction device).

【0002】[0002]

【従来技術及びその問題点】図3ないし図7について、
本発明の対象とする水ガバナーの基本構造及び原理につ
いて説明する。この水ガバナーは、上流側の圧力の高低
に関わらず、常に略一定の流量を供給することを目的と
したもので、集中式ボイラー、無タンク式水洗トイレ、
ホテル等での蛇口の最大流量規制等に用いられつつあ
る。基本形は特公昭51−23059号で提案された。
この水ガバナーは、ケーシング10、センタコア20、
及びOリング(弾性部材)30とからなっている。セン
タコア20は、中心の柱状部20Aと、外周のフランジ
部20Bとを有し、この中心柱状部20Aとフランジ部
20Bは、周方向に均等に設けた複数のブリッジ部25
を介して接続されていて、ブリッジ部25以外の部分に
は、貫通孔24が形成されている。
2. Description of the Related Art With reference to FIGS. 3 to 7,
The basic structure and principle of the water governor to which the present invention is applied will be described. This water governor is intended to always supply a substantially constant flow rate regardless of the pressure level on the upstream side, and it has a centralized boiler, a tankless flush toilet,
It is being used to regulate the maximum flow rate of faucets in hotels. The basic form was proposed in Japanese Examined Patent Publication No. 51-23059.
This water governor includes a casing 10, a center core 20,
And an O-ring (elastic member) 30. The center core 20 has a central columnar portion 20A and an outer peripheral flange portion 20B. The central columnar portion 20A and the flange portion 20B are provided with a plurality of bridge portions 25 provided evenly in the circumferential direction.
And a through hole 24 is formed in a portion other than the bridge portion 25.

【0003】円柱状部20Aには、その外面に放射方向
に延びる複数の凸部21と、これらの凸部21の間の凹
部22とが形成されている。Oリング30は、センタコ
ア20の円柱状部20Aの外周に嵌められ、凹部22と
の間に流路23を形成する。ケーシング10は、このセ
ンタコア20とOリング30の結合体を支持するもの
で、センタコア20のフランジ部20Bを受け入れる断
面階段状をなしている。このケーシング10は、上流側
の圧力によりセンタコア20がケーシング10に押し付
けられる方向に向けて、例えば水道管路11内に定着さ
れる。
A plurality of convex portions 21 extending in the radial direction and a concave portion 22 between these convex portions 21 are formed on the outer surface of the cylindrical portion 20A. The O-ring 30 is fitted on the outer periphery of the cylindrical portion 20A of the center core 20, and forms a flow path 23 between the O-ring 30 and the recess 22. The casing 10 supports the combined body of the center core 20 and the O-ring 30, and has a stepwise cross section for receiving the flange portion 20B of the center core 20. The casing 10 is fixed in, for example, the water pipe 11 in a direction in which the center core 20 is pressed against the casing 10 by the pressure on the upstream side.

【0004】この水ガバナーによると、上流側の流体
(水とする)が、貫通孔24からOリング30側に流入
し、Oリング30と凹部22との間の流路23を通っ
て、下流側に流れる(図5参照)。この際、流路23を
通過する水の流速に応じて、Oリング30が内方に弾性
変形して流路23の面積を変化させる。Oリング30の
弾性変形後の位置の例は、図4に符号Oリング30’で
示し、図6の平面図に示した。すなわち、流速が速い
程、Oリング30が内方に弾性変形して流路23の流路
が絞られる。
According to this water governor, the fluid on the upstream side (referred to as water) flows into the O-ring 30 side from the through hole 24, passes through the flow path 23 between the O-ring 30 and the recess 22, and reaches the downstream side. Flows to the side (see FIG. 5). At this time, the O-ring 30 elastically deforms inward according to the flow velocity of the water passing through the flow path 23 to change the area of the flow path 23. An example of the position of the O-ring 30 after elastic deformation is shown by reference numeral O-ring 30 'in FIG. 4 and shown in the plan view of FIG. That is, as the flow velocity is higher, the O-ring 30 is elastically deformed inward and the flow passage 23 is narrowed.

【0005】図7は、上流側の圧力を横軸にとり、流量
を縦軸にして描いた基本流量特性50Pの例である。こ
の図に示すように、上流側の圧力の高低に関わらず、略
一定の流量を取り出すことができる。しかし、この基本
流量特性50Pは、圧力が一定値に達したときに流量値
がピークに達してその後下降するオーバーシュート50
Sがあるばかりか、中圧での流量低下が認められ、理想
的な定流量50Iに比べると、まだ改良の余地がある。
FIG. 7 shows an example of a basic flow rate characteristic 50P in which the horizontal axis represents pressure on the upstream side and the vertical axis represents flow rate. As shown in this figure, a substantially constant flow rate can be taken out regardless of the pressure level on the upstream side. However, the basic flow rate characteristic 50P has an overshoot 50 in which the flow rate value reaches a peak when the pressure reaches a certain value and then falls.
In addition to the presence of S, a decrease in the flow rate at medium pressure was observed, and there is still room for improvement compared to the ideal constant flow rate of 50I.

【0006】[0006]

【発明の目的】本発明は、特に中圧での流量低下の少な
い水ガバナーを得ることを目的とする。
OBJECTS OF THE INVENTION It is an object of the present invention to obtain a water governor having a small decrease in the flow rate especially at medium pressure.

【0007】[0007]

【発明の概要】本発明による水ガバナーは、その一態様
によると、外周に放射方向に延びる複数の凸部とこれら
凸部の間に位置する凹部とを有するセンタコアと;この
センタコアの外周に嵌められ、上記凹部との間に流路を
形成する弾性リングと;このセンタコアと弾性リングを
支持し、上記流路に流体を流すケーシングと;を備えた
水ガバナーにおいて、センタコアの複数の凸部は、その
放射方向先端部が、軸直交断面において放射方向を中心
に先端側が互いに直線状に接近する先端幅狭凸部からな
ることを特徴としている。この水ガバナーによると、オ
ーバーシュートが大きく、中圧での流量低下の少ない流
量特性が得られる。
SUMMARY OF THE INVENTION According to one aspect of the water governor of the present invention, a center core having a plurality of radially extending projections and recesses located between these projections; In the water governor, a plurality of protrusions of the center core are provided, and an elastic ring that forms a flow path between the recess and the recess; and a casing that supports the center core and the elastic ring and flows a fluid into the flow path. The distal end portion in the radial direction is characterized by being a narrow narrow tip end portion in which the distal ends approach each other linearly with respect to the radial direction in the cross section orthogonal to the axis. According to this water governor, flow characteristics with large overshoot and little decrease in flow rate at medium pressure can be obtained.

【0008】本発明による水ガバナーは、別の態様によ
ると、外周に放射方向に延びる複数の凸部とこれら凸部
の間に位置する凹部とを有するセンタコアと;このセン
タコアの外周に嵌められ、上記凹部との間に流路を形成
する弾性リングと;このセンタコアと弾性リングを支持
し、上記流路に流体を流すケーシングと;を備えた水ガ
バナーにおいて、センタコアの放射方向の複数の凸部の
間に位置する凹部の底部に、幅広凹部を形成したことを
特徴としている。この水ガバナーによると、全圧力域で
全体的に流量が増加する流量特性が得られる。
According to another aspect, the water governor according to the present invention includes a center core having a plurality of radially extending projections on the outer periphery and a recess located between the projections; and a center core fitted to the outer periphery of the center core. A plurality of protrusions in a radial direction of the center core in a water governor, which includes an elastic ring that forms a flow path between the center core and the elastic ring; and a casing that supports the center core and the elastic ring and flows a fluid into the flow path. A wide concave portion is formed at the bottom of the concave portion located between the two. According to this water governor, a flow rate characteristic in which the flow rate generally increases in the entire pressure range is obtained.

【0009】[0009]

【発明の実施例】以下図面について本発明を説明する。
図1は本発明による水ガバナーの第一の実施例を示すも
ので、図の左に、基本形状の放射方向凸部21と凹部2
2の平面形状と、本発明により修正された修正凸部また
は凹部形状を示し、同右に、この基本形状による基本流
量特性50Pと、修正凸部または凹部形状による修正流
量特性を示している。
The present invention will be described below with reference to the drawings.
FIG. 1 shows a first embodiment of a water governor according to the present invention. To the left of the drawing, a radial convex portion 21 and a concave portion 2 of a basic shape are shown.
2 shows the planar shape and the modified convex or concave shape modified by the present invention. On the right side, the basic flow rate characteristic 50P by this basic shape and the modified flow rate characteristic by the modified convex or concave shape are shown.

【0010】図1に二点鎖線で示すように、基本形状の
放射方向凸部21は、軸直交断面において放射方向先端
部が略半円状をなしているのに対し、本実施形態の先端
幅狭凸部21Aは、その放射方向先端部が、軸直交断面
において放射方向を中心に先端側が互いに直線状に接近
する形状をしている。このようにすべての放射方向凸部
を、先端幅狭凸部21Aとしたセンタコアによると、基
本流量特性50Pに比して、オーバーシュートが大き
く、中圧での流量低下の少ない修正流量特性50Aが得
られる。
As shown by the chain double-dashed line in FIG. 1, the radial convex portion 21 of the basic shape has a substantially semicircular radial distal end in the cross section orthogonal to the axis, whereas the distal end of the present embodiment. 21 A of narrow width | variety convex parts have the shape which the front-end | tip part of the radial direction mutually approaches linearly centering | focusing on the radial direction in an axial orthogonal cross section. As described above, according to the center core in which all the radial convex portions are the narrow tip end convex portions 21A, the corrected flow characteristic 50A having a large overshoot and a small decrease in the flow rate at medium pressure is obtained as compared with the basic flow characteristic 50P. can get.

【0011】図2は、センタコアの放射方向の複数の凸
部21の間に位置する凹部の底部に、幅広凹部22Fを
形成した実施形態である。このようにすべての凹部の底
部に幅広凹部22Fを形成したセンタコアによると、基
本流量特性50Pに比し、全圧力域で全体的に流量が増
加する修正流量特性50Fが得られる。
FIG. 2 shows an embodiment in which a wide recess 22F is formed at the bottom of a recess located between a plurality of radial projections 21 of the center core. As described above, according to the center core in which the wide concave portions 22F are formed on the bottoms of all the concave portions, the corrected flow rate characteristic 50F in which the flow rate as a whole is increased in the entire pressure range as compared with the basic flow rate characteristic 50P is obtained.

【0012】[0012]

【発明の効果】本発明によれば、特に中圧での流量低下
の少ない水ガバナーを得ることができる。
According to the present invention, it is possible to obtain a water governor with a small decrease in flow rate, especially at medium pressure.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明による水ガバナーの流量特性調整方法の
第1の実施例と、その流量特性を示す図である。
FIG. 1 is a diagram showing a first embodiment of a flow rate characteristic adjusting method for a water governor according to the present invention and a flow rate characteristic thereof.

【図2】本発明による水ガバナーの流量特性調整方法の
第2の実施例と、その流量特性を示す図である。
FIG. 2 is a diagram showing a second embodiment of a flow characteristic adjusting method for a water governor according to the present invention and its flow characteristic.

【図3】本発明が対象とする水ガバナーに用いるセンタ
コアの基本形状例を示す平面図である。
FIG. 3 is a plan view showing an example of a basic shape of a center core used for the water governor targeted by the present invention.

【図4】図3のセンタコアを用いた水ガバナーの図3の
IV−IV線に沿う断面図である。
4 is a view of a water governor of FIG. 3 using the center core of FIG.
It is sectional drawing which follows the IV-IV line.

【図5】図3、図4の水ガバナーの使用状態における1
つの状態を示す、図4のA矢視平面図である。
5 is a view of the water governor of FIGS. 3 and 4 in use condition 1;
FIG. 5 is a plan view of FIG. 4 viewed in the direction of arrow A, showing two states.

【図6】図3、図4の水ガバナーの使用状態における別
の状態を示す、図4のA矢視平面図である。
FIG. 6 is a plan view taken along arrow A of FIG. 4, showing another state in which the water governor of FIGS. 3 and 4 is in use.

【図7】図3、図4の水ガバナーの流量特性の一例を示
すグラフ図である。
7 is a graph showing an example of flow rate characteristics of the water governor of FIGS. 3 and 4. FIG.

【符号の説明】[Explanation of symbols]

10 ケーシング 20 センタコア 21 放射方向凸部(基本形状) 21A 先端幅狭凸部 22 凹部(基本形状) 22F 幅広凹部 23 流路 24 貫通孔 25 ブリッジ部 30 Oリング(弾性部材) 50A 50F 修正流量特性 50P 基本流量特性 10 casing 20 center core 21 Radial convex part (basic shape) 21A Narrow tip convex 22 recess (basic shape) 22F Wide recess 23 channel 24 through holes 25 bridge section 30 O-ring (elastic member) 50A 50F Corrected flow rate characteristics 50P basic flow rate characteristics

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭48−11622(JP,A) 特開 昭47−28523(JP,A) 実開 平3−112176(JP,U) 実開 昭58−172188(JP,U) 実開 昭58−137166(JP,U) 実開 平5−54875(JP,U) 特公 昭51−23059(JP,B1) (58)調査した分野(Int.Cl.7,DB名) F16K 17/34 ─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-48-11622 (JP, A) JP-A-47-28523 (JP, A) Actually open 3-111176 (JP, U) Actually open 58- 172188 (JP, U) Actual development Sho-58-137166 (JP, U) Actual development Hei 5-54875 (JP, U) Japanese Patent Sho-51-23059 (JP, B1) (58) Fields investigated (Int.Cl. 7 , DB name) F16K 17/34

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 外周に放射方向に延びる複数の凸部とこ
れら凸部の間に位置する凹部とを有するセンタコアと;
このセンタコアの外周に嵌められ、上記凹部との間に流
路を形成する弾性リングと;このセンタコアと弾性リン
グを支持し、上記流路に流体を流すケーシングと;を備
えた水ガバナーにおいて、 上記センタコアの複数の凸部は、その放射方向先端部
が、軸直交断面において放射方向を中心に先端側が互い
に直線状に接近する先端幅狭凸部からなることを特徴と
する水ガバナー。
1. A center core having a plurality of radially extending projections on its outer periphery and recesses located between these projections;
A water governor fitted to the outer periphery of the center core, which includes an elastic ring that forms a flow path between the center core and the recess; and a casing that supports the center core and the elastic ring and flows a fluid into the flow path. The plurality of protrusions of the center core are water-governors, characterized in that their tip ends in the radial direction are tip-narrow protrusions whose tip ends approach each other linearly with respect to the radial direction in a cross section orthogonal to the axis.
【請求項2】 外周に放射方向に延びる複数の凸部とこ
れら凸部の間に位置する凹部とを有するセンタコアと;
このセンタコアの外周に嵌められ、上記凹部との間に流
路を形成する弾性リングと;このセンタコアと弾性リン
グを支持し、上記流路に流体を流すケーシングと;を備
えた水ガバナーにおいて、 上記センタコアの放射方向の複数の凸部の間に位置する
凹部の底部に、幅広凹部を形成したことを特徴とする水
ガバナー。
2. A center core having a plurality of radially extending projections on its outer periphery and recesses located between these projections;
A water governor fitted to the outer periphery of the center core, which includes an elastic ring that forms a flow path between the center core and the recess; and a casing that supports the center core and the elastic ring and flows a fluid into the flow path. A water governor characterized in that a wide recess is formed at the bottom of a recess located between a plurality of radial projections of the center core.
JP28845094A 1994-11-22 1994-11-22 Water governor Expired - Fee Related JP3392241B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28845094A JP3392241B2 (en) 1994-11-22 1994-11-22 Water governor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28845094A JP3392241B2 (en) 1994-11-22 1994-11-22 Water governor

Publications (2)

Publication Number Publication Date
JPH08145213A JPH08145213A (en) 1996-06-07
JP3392241B2 true JP3392241B2 (en) 2003-03-31

Family

ID=17730373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28845094A Expired - Fee Related JP3392241B2 (en) 1994-11-22 1994-11-22 Water governor

Country Status (1)

Country Link
JP (1) JP3392241B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5215709B2 (en) * 2008-04-01 2013-06-19 藤倉ゴム工業株式会社 Water governor
DE202011100800U1 (en) * 2011-05-17 2012-08-20 Neoperl Gmbh Flow regulator

Also Published As

Publication number Publication date
JPH08145213A (en) 1996-06-07

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