JP2681246B2 - Relief valve - Google Patents
Relief valveInfo
- Publication number
- JP2681246B2 JP2681246B2 JP5067455A JP6745593A JP2681246B2 JP 2681246 B2 JP2681246 B2 JP 2681246B2 JP 5067455 A JP5067455 A JP 5067455A JP 6745593 A JP6745593 A JP 6745593A JP 2681246 B2 JP2681246 B2 JP 2681246B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- spring
- pressure
- opening pressure
- valve opening
- 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
Links
Landscapes
- Fluid-Driven Valves (AREA)
- Control Of Fluid Pressure (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主として、湯沸器に対
する給水圧力を、給湯栓を開放して湯を使用していると
きには高くし、給湯栓を閉じて湯の使用を停止している
ときは低くすることで、湯沸器の缶内圧力を安全に保持
しながら、使い勝手の良い高圧の湯が取り出せるように
する給湯装置に、使用するように開発した逃し弁に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly increases the water supply pressure to a water heater when the hot water tap is opened and hot water is used, and the hot water tap is closed to stop the use of hot water. The present invention relates to a relief valve developed for use in a hot-water supply device that enables the user to take out high-pressure hot water that is convenient to use while keeping the pressure inside the can of the water heater safe by lowering it.
【０００２】[0002]
【従来の技術】従来の逃し弁Ａは、図１に示している如
く、湯沸器等の缶体に対して接続する接続口１０と大気
に対して開放する排水口１１とを具備せしめた弁箱１内
に、前記接続口１０と排水口１１との連通を遮断する隔
壁１２を設けて、これに排水口１１と通ずる逃し口１３
を開設し、その逃し口１３の口縁に逃し弁機構２の弁座
２０を環状に形設し、その弁座２０の上方にダイヤフラ
ム３を配位して弁箱１に組付け、これの軸芯部の内面側
に前記弁座２０に対し進退して逃し口１３を開閉する弁
体２１を組付け、ダイヤフラム３の外面側には、バネケ
ース１４を組付け、それの内腔に、前記ダイヤフラム３
を弁座２０に向け押し下げて、弁体２１を閉弁位置に付
勢する開弁圧設定バネ４を収蔵し、その開弁圧設定バネ
４の支点側となる上端側を、前記バネケース１４に螺合
した調整ネジ５の下面側に支承させて、この調整ネジ５
の螺じ込み位置を所望に調整することで、逃し弁機構２
の弁体２１が開弁する設定圧力を所望に設定するように
してある。2. Description of the Related Art As shown in FIG. 1, a conventional relief valve A has a connection port 10 for connecting to a can body such as a water heater and a drain port 11 for opening to the atmosphere. In the valve box 1, a partition wall 12 for blocking communication between the connection port 10 and the drain port 11 is provided, and an escape port 13 communicating with the drain port 11 is provided in the partition wall 12.
The valve seat 20 of the relief valve mechanism 2 is formed in an annular shape at the edge of the relief port 13, and the diaphragm 3 is arranged above the valve seat 20 and assembled to the valve box 1. A valve body 21 for advancing and retreating with respect to the valve seat 20 to open and close the escape port 13 is attached to the inner surface side of the shaft core portion, a spring case 14 is attached to the outer surface side of the diaphragm 3, and the inner cavity thereof is Diaphragm 3
The valve opening pressure setting spring 4 for urging the valve body 21 to the valve closing position, and the upper end side, which is the fulcrum side of the valve opening pressure setting spring 4, is attached to the spring case 14. The adjustment screw 5 screwed together is supported on the lower surface side of the adjustment screw 5
By adjusting the screwing position of the valve to the desired value, the relief valve mechanism 2
The set pressure at which the valve body 21 is opened is set to a desired value.
【０００３】この開弁圧設定バネ４は、ダイヤフラム３
の受圧面積の大小に異なるが、一般には、１５〜１６ｋ
ｇｆのバネ圧のものとなっている。そして、このことか
ら、この開弁圧設定バネ４のバネ圧の調整を、手動操作
により調整ネジ５を回動させて行なうことは困難で、通
常は、逃し弁Ａを組立てる際に、設定圧力を測定しなが
ら工具により調整ネジ５を回動させ、これにより組立て
た後には、設定した設定圧力が固定のものとなるように
してある。The valve opening pressure setting spring 4 is provided in the diaphragm 3
The pressure receiving area varies depending on the size, but generally 15 to 16k
The spring pressure is gf. From this, it is difficult to adjust the spring pressure of the valve opening pressure setting spring 4 by rotating the adjusting screw 5 by a manual operation, and normally, when the relief valve A is assembled, the set pressure is set. While adjusting, the adjusting screw 5 is rotated by a tool so that the set pressure is fixed after assembling.
【０００４】[0004]
【発明が解決しようとする課題】ところで、ボイラー等
の湯沸器ａは、図２に示している如く、湯沸器ａに連通
する給水配管ｂに、高圧減圧弁ＨＶと低圧減圧弁ＬＶと
を並列に接続しておいて、これらを、給水配管ｂに接続
しておくフロースイッチＦＬＳＷと、それにより制御さ
れる電磁弁ＳＶとの作動で、交互に切換わって給水配管
ｂを介し湯沸器ａと連通するように制御しておけば、こ
の湯沸器ａに対する給水圧力が、給湯栓ｃ側での湯の使
用があるときには高圧設定とし湯の使用がないときには
低圧設定として、使い勝手の良い高圧の湯が取り出せる
ようになる。しかし、このようにするには、湯沸器ａに
安全のために設けておく逃し弁Ａは、それの開弁圧力
が、高低の２段に切換わることが要求されるようにな
る。A water heater a such as a boiler has a high pressure reducing valve HV and a low pressure reducing valve LV in a water supply pipe b communicating with the water heater a, as shown in FIG. Are connected in parallel and are connected to the water supply pipe b by a flow switch FLSW and a solenoid valve SV controlled by the flow switch FLSW. If it is controlled so as to communicate with the water heater a, the water supply pressure for the water heater a is set to a high pressure when hot water is used on the side of the hot water tap c and a low pressure setting when there is no hot water used. You will be able to get good high-pressure hot water. However, in order to do so, the relief valve A provided for safety in the water heater a is required to have its valve opening pressure switched to two stages of high and low.
【０００５】ところが、従前の逃し弁Ａは、それの開弁
する設定圧力が固定で高低に切換えることが困難なこと
から、上述のように給水圧力を高低に切換えるようにす
る場合には、この湯沸器ａの缶体に接続して設ける逃し
弁Ａは、開弁圧力を高圧に設定したものと低圧に設定し
たものとの２者を、並列させて接続しておき、そのうち
の低圧設定とした逃し弁Ａを、缶体に対する連通が、オ
ン・オフに切換わるようにしておいて、低圧設定の減圧
弁ＬＶを介し湯沸器ａに給水が行なわれる状態となった
ときに、この低圧設定とした逃し弁Ａが湯沸器ａの缶体
に連通してくるようにすることが強いられる問題が出て
くる。However, the conventional relief valve A has a fixed set pressure for opening it, and it is difficult to switch between high and low. Therefore, when switching the feed water pressure between high and low as described above, The relief valve A connected to the can body of the water heater a has two valves, one having a high valve opening pressure and the other having a low valve opening pressure, which are connected in parallel and the low pressure setting is performed. The relief valve A is set so that the communication with the can body is switched between on and off, and when water is supplied to the water heater a through the pressure reducing valve LV set to low pressure, There arises a problem that the relief valve A set to low pressure is forced to communicate with the can body of the water heater a.
【０００６】[0006]
【目的】本発明は、上述の問題を解消するためになされ
たものであって、逃し弁機構２が開弁してくる設定圧力
を、逃し弁機構２の制御をダイヤフラム３により行なう
機構を崩すことなく簡単な構造で、湯沸器ａに対する給
水圧力の変化により自動的に高低に切換わるように逃し
弁Ａを構成する新たな手段を提供することを目的とす
る。An object of the present invention is to solve the above-mentioned problem, and to destroy the mechanism for controlling the relief valve mechanism 2 by the diaphragm 3 to the set pressure at which the relief valve mechanism 2 opens. It is an object of the present invention to provide a new means of configuring the relief valve A so as to automatically switch between high and low by a change in the water supply pressure to the water heater a with a simple structure.
【０００７】[0007]
【課題を解決するための手段】そして、本発明において
は、上述の目的を達成するための手段として、湯沸器等
の缶体に対して接続する接続口１０と大気に対して開放
する排水口１１とを具備せしめた弁箱１の上面側に、前
記接続口１０から排水口１１に向う弁箱１内の流路の水
圧に応動する撓曲自在のダイヤフラム３を組付け、弁箱
１内には、排水口１１と通ずる逃し口１３とそれに対向
してその逃し口１３を開閉する弁体２１らよりなる弁機
構２とを装設し、その弁機構２の弁体２１を前記ダイヤ
フラム３に組付け、ダイヤフラム３の外面側にはバネケ
ース１４を配して弁箱１に一体的に組付け、そのバネケ
ース１４内に、前記弁体２１を閉弁側に付勢する開弁圧
設定バネ４を、開弁圧力が所望の設定圧力となるよう設
定して収蔵して、それの可動側を前記ダイヤフラム３の
外面側に連繋し、支点側を前記バネケース１４の上端側
に設けた調整ネジ５に支持せしめたダイヤフラム型の逃
し弁Ａにおいて、逃し弁機構２の逃し口１３に対向する
弁体２１を閉弁側に付勢する開弁圧設定バネ４の支点側
を、バネケース１４の上部側に設けた調整ネジ５に、開
弁圧設定バネ４のバネ圧の方向に可動に支持せ締め、そ
の調整ネジ５の外面側には、水道水圧力を受入れる加圧
室Ｋを設け、その加圧室Ｋ内に前記水道水圧力により前
述バネ圧の方向に駆動する駆動部材Ｄを収蔵し、その駆
動部材Ｄに、前記ダイヤフラム３に対し可動側を連繋す
る開弁圧設定バネ４の支点側を支持せしめたことを特徴
とする逃し弁を提起するものであり、また、上述のダイ
ヤフラム型の逃し弁において、湯沸器等の缶体に対して
接続する接続口１０と大気に対して開放する排水口１１
とを具備せしめた弁箱１の上面側に、前記接続口１０か
ら排水口１１に向う弁箱１内の流路の水圧に応動する撓
曲自在のダイヤフラム３を組付け、弁箱１内には、排水
口１１と通ずる逃し口１３とそれに対向してその逃し口
１３を開閉する弁体２１らよりなる弁機構２とを装設
し、その弁機構２の弁体２１を前記ダイヤフラム３に組
付け、ダイヤフラム３の外面側にはバネケース１４を配
して弁箱１に一体的に組付け、そのバネケース１４内
に、前記弁体２１を閉弁側に付勢する開弁圧設定バネ４
を、開弁圧力が所望の設定圧力となるよう設定して収蔵
して、それの可動側を前記ダイヤフラム３の外面側に連
繋し、支点側を前記バネケース１４の上端側に設けた調
整ネジ５に支持せしめたダイヤフラム型の逃し弁Ａにお
いて、前記ダイヤフラム３の外面側に可動側を連繋する
開弁圧設定バネ４を、並列する第１開弁圧設定バネ４−
１と第２開弁圧設定バネ４−２との２本に分け、一方の
第１開弁圧設定バネ４−１の支点側を調整ネジ５に支持
せしめ、他方の第２開弁圧設定バネ４−２の支点側を、
前記調整ネジ５に該第２開弁圧設定バネ４−２のバネ圧
の方向に可動に支持せしめ、調整ネジ５の外面側には、
水道水圧力を受入れる加圧室Ｋを設け、その加圧室Ｋ内
に前記水道水圧力により前述のバネ圧の方向に駆動する
駆動部材Ｄを収蔵し、その駆動部材Ｄに前記第２開弁圧
設定バネ４−２の支点側を支持せしめたことを特徴とす
る逃し弁を提起し、さらに、上述の逃し弁において、湯
沸器等の缶体に対して接続する接続口１０と大気に対し
て開放する排水口１１とを具備せしめた弁箱１の上面側
に、前記接続口１０から排水口１１に向う弁箱１内の流
路の水圧に応動する撓曲自在のダイヤフラム３を組付
け、弁箱１内には、排水口１１と通ずる逃し口１３とそ
れに対向してその逃し口１３を開閉する弁体２１らより
なる弁機構２とを装設し、その弁機構２の弁体２１を前
記ダイヤフラム３に組付け、ダイヤフラム３の外面側に
はバネケース１４を配して弁箱１に一体的に組付け、そ
のバネケース１４内に、前記弁体２１を閉弁側に付勢す
る開弁圧設定バネ４を、開弁圧力が所望の設定圧力とな
るよう設定して収蔵して、それの可動側を前記ダイヤフ
ラム３の外面側に連繋し、支点側を前記バネケース１４
の上端側に設けた調整ネジ５に支持せしめたダイヤフラ
ム型の逃し弁Ａにおいて、逃し弁機構２の逃し口１３に
対向する弁体２１を閉弁側に付勢する開弁圧設定バネ４
の支点側を、バネケース１４の上部側に設けた調整ネジ
５に、該開弁圧設定バネ４のバネ圧の方向に可動に支持
せしめ、調整ネジ５の外面側には、水道水圧力を受入れ
る加圧室Ｋを設け、その加圧室Ｋ内に前記水道水圧力に
より前述バネ圧の方向に駆動する駆動部材Ｄを収蔵し、
その駆動部材Ｄに、前記ダイヤフラム３に対し可動側を
連繋する開弁圧設定バネ４の支点側を支持せしめ、加圧
室Ｋに、水道水圧力と連通する管路Ｐ１と、排水口１１
を介して大気側に連通する管路Ｐ２とを接続連通し、そ
れら管路Ｐ１・Ｐ２を電磁切換弁Ｗの作動により交互に
切換わって加圧室Ｋと連通するよう制御せしめたことを
特徴とする逃し弁を提起するものである。In the present invention, as means for achieving the above-mentioned object, a connection port 10 connected to a can body such as a water heater and drainage open to the atmosphere. A flexible diaphragm 3 that responds to the water pressure of the flow path in the valve box 1 from the connection port 10 to the drain port 11 is attached to the upper surface side of the valve box 1 equipped with the port 11 and the valve box 1 Inside, there is provided a relief port 13 communicating with the drainage port 11 and a valve mechanism 2 composed of a valve body 21 that opposes the drainage port 13 to open and close the relief port 13, and the valve body 21 of the valve mechanism 2 is provided with the diaphragm. 3 and the spring case 14 is arranged on the outer surface side of the diaphragm 3 to be integrally assembled with the valve box 1. Inside the spring case 14, the valve opening pressure setting for urging the valve body 21 toward the valve closing side is set. Store the spring 4 with the valve opening pressure set to the desired set pressure, In the relief valve A of the diaphragm type in which the movable side is connected to the outer surface side of the diaphragm 3 and the fulcrum side is supported by the adjusting screw 5 provided on the upper end side of the spring case 14, the relief port 13 of the relief valve mechanism 2 is provided. The fulcrum side of the valve opening pressure setting spring 4 for urging the valve body 21 facing the valve closing side to the adjustment screw 5 provided on the upper side of the spring case 14 in the direction of the spring pressure of the valve opening pressure setting spring 4. A pressurizing chamber K that receives the tap water pressure is provided on the outer surface side of the adjustment screw 5 that is movably supported and tightened, and a driving member that drives the tap water pressure in the pressurizing chamber K in the spring pressure direction by the tap water pressure. A relief valve is provided, in which D is stored, and the fulcrum side of the valve opening pressure setting spring 4 that connects the movable side to the diaphragm 3 is supported by the drive member D thereof. In the diaphragm type relief valve described above, Drain outlet 11 to open to the connection port 10 and the atmosphere for connection to a can body etc.
A flexible diaphragm 3 that responds to the water pressure in the flow path in the valve box 1 from the connection port 10 to the drain port 11 is assembled on the upper surface side of the valve box 1 having Is equipped with a relief mechanism 13 that communicates with the drainage mechanism 11, and a valve mechanism 2 composed of a valve body 21 that opens and closes the relief mechanism 13 opposite to the relief mechanism 13. The valve mechanism 21 of the valve mechanism 2 is attached to the diaphragm 3. Assembling, the spring case 14 is arranged on the outer surface side of the diaphragm 3 to be integrally assembled to the valve box 1, and the valve opening pressure setting spring 4 for urging the valve body 21 toward the valve closing side in the spring case 14.
Is stored such that the valve opening pressure is set to a desired set pressure, the movable side thereof is connected to the outer surface side of the diaphragm 3, and the fulcrum side is provided with the adjusting screw 5 provided on the upper end side of the spring case 14. In the relief valve A of the diaphragm type supported by the above, the valve opening pressure setting spring 4 connecting the movable side to the outer surface side of the diaphragm 3 is arranged in parallel with the first valve opening pressure setting spring 4-
1 and the second valve opening pressure setting spring 4-2, and the fulcrum side of one of the first valve opening pressure setting springs 4-1 is supported by the adjusting screw 5, and the other second valve opening pressure setting spring 4-2 is supported. The fulcrum side of the spring 4-2,
The adjusting screw 5 is supported so as to be movable in the direction of the spring pressure of the second valve opening pressure setting spring 4-2.
A pressurizing chamber K that receives tap water pressure is provided, and a drive member D that is driven by the tap water pressure in the direction of the spring pressure is stored in the pressurizing chamber K, and the drive member D includes the second opening valve. A relief valve characterized by supporting the fulcrum side of the pressure setting spring 4-2 is proposed. Further, in the above-mentioned relief valve, the connection port 10 connected to a can body such as a water heater is connected to the atmosphere. A flexible diaphragm 3 that responds to the water pressure of the flow path in the valve box 1 from the connection port 10 to the drain port 11 is assembled on the upper surface side of the valve box 1 provided with a drain port 11 which is open to the outside. The valve box 1 is provided with a relief port 13 communicating with the drainage port 11 and a valve mechanism 2 including a valve body 21 that opens and closes the relief port 13 facing the drainage port 11. The body 21 is assembled to the diaphragm 3, and the spring case 14 is attached to the outer surface of the diaphragm 3. The valve opening pressure setting spring 4 for urging the valve body 21 toward the valve closing side is set in the spring case 14 so that the valve opening pressure becomes a desired setting pressure. And stores it, and connects the movable side thereof to the outer surface side of the diaphragm 3 and the fulcrum side thereof to the spring case 14
In the diaphragm type relief valve A supported by the adjusting screw 5 provided on the upper end side of the valve opening pressure setting spring 4 for biasing the valve body 21 facing the relief opening 13 of the relief valve mechanism 2 to the valve closing side.
The fulcrum side of is movably supported in the spring pressure direction of the valve opening pressure setting spring 4 by an adjusting screw 5 provided on the upper side of the spring case 14, and tap water pressure is received on the outer surface side of the adjusting screw 5. A pressurizing chamber K is provided, and a drive member D that is driven in the direction of the spring pressure by the tap water pressure is stored in the pressurizing chamber K.
The driving member D supports the fulcrum side of the valve opening pressure setting spring 4 which connects the movable side to the diaphragm 3, and the pressurizing chamber K has a pipe line P1 communicating with tap water pressure and a drain port 11.
It is characterized in that the pipe line P2 communicating with the atmosphere side is connected and communicated with each other, and the pipe lines P1 and P2 are alternately switched by the operation of the electromagnetic switching valve W so as to communicate with the pressurizing chamber K. It proposes a relief valve.
【０００８】[0008]
【実施例】次に実施例を図面に従い詳述する。なお、図
面符号は、従前手段のものと同効の構成部材については
同一の符号を用いるものとする。Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.
【０００９】図３は本発明を実施せる逃し弁Ａの縦断正
面図、図５は同上逃し弁Ａを組込んだ給湯装置の展開図
で、図３において、１は湯沸器ａ等の缶体に対し接続す
る接続口１０と大気に開放する排水口１１とを外面側に
設けた弁箱、１２は弁箱１内に装設した隔壁、１３はそ
の隔壁１３に開設した逃し口、２は逃し口１３の口縁に
設けた弁座２０とこれに対向する弁体２１とからなる逃
し弁機構、３は前記逃し弁機構２の弁体２１を下面側に
支持せしめて弁箱１の上面側に組付けたダイヤフラム、
１４はダイヤフラム３の外面側に装設した弁箱１に組付
けたバネケース、４はこのバネケース１４内に収蔵して
前記ダイヤフラム３を弁箱１内の弁座２０に向け下降す
るよう付勢する開弁圧設定バネ、５はこの開弁圧設定バ
ネ４の設定圧力を調整するよう前記バネケース１４に螺
合した調整ネジを示し、これらの構成は、図１に示した
従前の逃し弁Ａのものと変わりがない。FIG. 3 is a vertical sectional front view of a relief valve A for carrying out the present invention, and FIG. 5 is a development view of a hot water supply apparatus incorporating the relief valve A. In FIG. 3, 1 is a can of a water heater a or the like. A valve box provided with a connection port 10 connected to the body and a drain port 11 open to the atmosphere on the outer surface side, 12 is a partition installed in the valve box 1, 13 is an escape port opened in the partition 13, 2 The relief valve mechanism 3 comprises a valve seat 20 provided at the rim of the relief port 13 and a valve body 21 facing the valve seat 20. The valve body 3 of the relief valve mechanism 2 is supported by the relief valve mechanism 3 on the lower surface side. Diaphragm assembled on the top side,
Reference numeral 14 is a spring case assembled to the valve box 1 mounted on the outer surface side of the diaphragm 3, and 4 is stored in the spring case 14 and urges the diaphragm 3 toward the valve seat 20 in the valve box 1 so as to descend. Valve opening pressure setting springs 5 are adjusting screws screwed into the spring case 14 so as to adjust the setting pressure of the valve opening pressure setting spring 4. These configurations are the same as those of the conventional relief valve A shown in FIG. It is no different from the one.
【００１０】しかし、開弁圧設定バネ４の支点側となる
上端側を支承するバネ支持座４０は、調整ネジ５の下方
において、その調整ネジ５に対し開弁圧設定バネ４のバ
ネ圧の方向に移動自在としてある。そして、このバネ支
持座４０には、前記調整ネジ５の軸芯部位に開設した透
孔内に前述のバネ圧の方向となる上下方向に摺動自在に
嵌合して上端側が調整ネジ５の上面側に突出する作動部
材６が、一体的に連結してあり、それの上端側には、調
整ネジ５に開設した透孔の口径よりも大径に拡径する鍔
部６０が形設してある。そしてこれにより、開弁圧設定
バネ４のバネ圧が、図３にあるよう所望の位置に調整し
た調整ネジ５の下面にバネ支持座４０の上面が当接した
状態時から、図４に示している如く調整ネジ５の上面に
作動部材６の鍔部６０の下面が当接した状態時までの間
において、高低に変化するようにしてある。However, the spring support seat 40, which supports the upper end side which is the fulcrum side of the valve opening pressure setting spring 4, is below the adjusting screw 5 and the spring pressure of the valve opening pressure setting spring 4 is set against the adjusting screw 5. It is movable in any direction. The spring support seat 40 is slidably fitted in a through hole formed at the axial center portion of the adjusting screw 5 in the vertical direction which is the direction of the spring pressure described above, and the upper end side of the adjusting screw 5 is provided. An operating member 6 projecting to the upper surface side is integrally connected, and a flange portion 60 is formed on the upper end side of the operating member 6 so as to have a diameter larger than the diameter of the through hole formed in the adjusting screw 5. There is. As a result, the spring pressure of the valve opening pressure setting spring 4 is shown in FIG. 4 from the state in which the upper surface of the spring support seat 40 is in contact with the lower surface of the adjusting screw 5 adjusted to a desired position as shown in FIG. As described above, the height is changed until the lower surface of the collar portion 60 of the actuating member 6 contacts the upper surface of the adjusting screw 5.
【００１１】また、バネケース１４の上面側には、そこ
に組付けたブロック７０により、加圧室Ｋが形設してあ
る。そして、この加圧室Ｋ内には、該加圧室Ｋ内の圧力
変化により前述の開弁圧設定バネ４のバネ圧の方向に動
く駆動部材Ｄが収蔵してある。A pressurizing chamber K is formed on the upper surface side of the spring case 14 by a block 70 assembled therein. A drive member D that moves in the direction of the spring pressure of the valve opening pressure setting spring 4 described above is housed in the pressurizing chamber K due to the pressure change in the pressurizing chamber K.
【００１２】該駆動部材Ｄは、この実施例においては、
ピストン状に形成してあって、前述のブロック７０によ
り形成する加圧室Ｋを、前記開弁圧設定バネ４のバネ圧
の方向が軸線方向となるシリンダ状に形成しておくこと
で、これの内部に、前記方向に摺動するよう嵌合せしめ
てある。そして、加圧室Ｋの内周面との嵌合面には、水
密を保持するシール部材７３を設けて、加圧室Ｋを前記
バネケース１４側に対して水密に隔離する隔壁を兼ねた
ものとしてある。The drive member D is, in this embodiment,
By forming the pressurizing chamber K, which is formed in the shape of a piston and formed by the block 70 described above, in the shape of a cylinder in which the direction of the spring pressure of the valve opening pressure setting spring 4 is the axial direction, It is fitted in the inside of the so as to slide in the direction. A seal member 73 for maintaining watertightness is provided on the fitting surface with the inner peripheral surface of the pressurizing chamber K, which also serves as a partition for watertightly isolating the pressurizing chamber K from the spring case 14 side. There is.
【００１３】この駆動部材Ｄは、図６に示す実施例の如
く、ダイヤフラムに形成して、加圧室Ｋを形成するブロ
ック７０とバネケース１４の上端面との間に、これらを
隔てる仕切壁状に組付ける場合がある。The drive member D is formed in a diaphragm as in the embodiment shown in FIG. 6, and is formed as a partition wall between the block 70 forming the pressure chamber K and the upper end surface of the spring case 14. May be attached to.
【００１４】しかして、該駆動部材Ｄは、それの下面側
が図３にあるよう平面に形成してあって、ここに、前述
の作動部材６の上端面が衝合するようにしてあり、これ
により、加圧室Ｋ内の水圧で該駆動部材Ｄが下降作動す
ると、作動部材６を図４にあるよう調整ネジ５の上面に
突当るまで下降させて、開弁圧設定バネ４を前記調整ネ
ジ５により設定した設定圧力よりも高圧側に押し縮めて
いき、また、加圧室Ｋ内の水圧が抜けると、開弁圧設定
バネ４のバネ圧で上昇する作動部材６により、その作動
部材６と一体的に連繋するバネ支持座４０が、図３にあ
るように調整ネジ５の下面に衝合する位置まで押し上げ
られ、開弁圧設定バネ４を、調整ネジ５により設定した
設定圧力に復元させるようにしてある。The lower surface side of the driving member D is formed into a flat surface as shown in FIG. 3, and the upper end surface of the above-mentioned actuating member 6 abuts against it. As a result, when the drive member D is lowered by the water pressure in the pressurizing chamber K, the operating member 6 is lowered until it abuts the upper surface of the adjusting screw 5 as shown in FIG. 4, and the valve opening pressure setting spring 4 is adjusted as described above. When the hydraulic pressure in the pressurizing chamber K is reduced by pushing the pressure higher than the set pressure set by the screw 5, the operating member 6 is raised by the spring pressure of the valve opening pressure setting spring 4 to cause the operating member to move. The spring support seat 40 that is integrally connected to 6 is pushed up to the position where it abuts against the lower surface of the adjusting screw 5 as shown in FIG. 3, and the valve opening pressure setting spring 4 is set to the setting pressure set by the adjusting screw 5. I am trying to restore it.
【００１５】この駆動部材Ｄの作動は、該駆動部材Ｄを
ダイヤフラムにより形成して、これに、作動部材６を一
体的に連繋して、加圧室Ｋ内の水圧で、ダイヤフラムよ
りなる駆動部材Ｄが下方に動き、加圧室Ｋ内から水圧が
抜けることで、開弁圧設定バネ４のバネ圧で復元上昇す
るようにした場合も同様である。The drive member D is operated by forming the drive member D by a diaphragm and integrally connecting the operating member 6 to the drive member D by the water pressure in the pressurizing chamber K. The same applies to the case where D moves downward and water pressure is released from the pressurizing chamber K so that the spring pressure of the valve opening pressure setting spring 4 restores and raises.
【００１６】前記加圧室Ｋは、それを形成しているブロ
ック７０の天井壁に、それの上面側に連通するよう形設
した連通路７１を介して、ブロック７０の上面側に装設
した連通室７２に連通している。そして、その連通室７
２には、図５に示している如く、湯沸器ａの給水口に連
通する給水配管ｂに、それに並列させて接続しておく高
圧減圧弁ＨＶおよび低圧減圧弁ＬＶ等の減圧弁より一次
側に配位して接続する連通管８０を介して水道水圧力が
導かれる管路Ｐ１と、弁箱１の排水口１１の内腔に接続
する連通管８１を介して大気に連通するる管路Ｐ２とが
連通している。そしてまた、これら管路Ｐ１・Ｐ２は、
それらの、連通室７２に対して連通する側の端部に、弁
座８２・８３がそれぞれ形設してあり、これに対向する
弁体８４・８５が、前記ブロック７０の上面に組付けた
電磁石９０のコア９１内腔に嵌装して、復元バネ９２よ
り下降側に付勢した可動の鉄芯９３の上下の両端部にぞ
れ設けてあって、これにより電磁石９０への通電によ
り、可動の鉄芯９３が復元バネ９２の付勢に抗して上昇
すると（図４）、管路Ｐ２側の弁座８３に弁体８５が衝
合して管路Ｐ２側を閉塞し、電磁石９０への通電を断に
すると、可動の鉄芯９３が復元バネ９２の付勢で下降し
て、図３の如く管路Ｐ１側の弁座８２に弁体８４が衝合
してその管路Ｐ１側を閉塞するようにしてある。The pressurizing chamber K is installed on the upper surface side of the block 70 through a communication passage 71 formed so as to communicate with the ceiling wall of the block 70 forming the pressure chamber K on the upper surface side thereof. It communicates with the communication chamber 72. And the communication room 7
As shown in FIG. 5, reference numeral 2 denotes a primary pressure source such as a high pressure pressure reducing valve HV and a low pressure pressure reducing valve LV which are connected in parallel to a water supply pipe b communicating with the water supply port of the water heater a. A pipe that communicates with the atmosphere through a conduit P1 through which the tap water pressure is guided through a communication pipe 80 that is coordinated to the side and a communication pipe 81 that is connected to the inner cavity of the drainage port 11 of the valve box 1. It communicates with the road P2. And again, these pipelines P1 and P2 are
Valve seats 82 and 83 are respectively formed at the ends of the side communicating with the communication chamber 72, and valve bodies 84 and 85 facing the valve seats 82 and 83 are attached to the upper surface of the block 70. The movable iron core 93 is fitted into the inner bore of the core 91 of the electromagnet 90 and is provided at the upper and lower ends of the movable iron core 93 that is biased downward from the restoring spring 92. When the movable iron core 93 rises against the bias of the restoring spring 92 (FIG. 4), the valve body 85 collides with the valve seat 83 on the side of the pipeline P2 to close the side of the pipeline P2, and the electromagnet 90 When the power is turned off, the movable iron core 93 is lowered by the urging force of the restoring spring 92, and the valve element 84 collides with the valve seat 82 on the side of the pipeline P1 as shown in FIG. The side is closed.
【００１７】電磁石９０はそれのケースが、前述の連通
室７２の外壁を兼ね、また、コア９１の内腔が、管路Ｐ
２の先端と連通室７２とを連通させる管路を兼ねたもの
となっている。The case of the electromagnet 90 also serves as the outer wall of the above-mentioned communication chamber 72, and the inner cavity of the core 91 has the conduit P.
It also serves as a conduit for connecting the tip of 2 to the communication chamber 72.
【００１８】また、この電磁石９０とそれの可動の鉄芯
９３の上下の両端部に設けた弁体８４・８５と管路Ｐ１
・Ｐの各先端部に設けた弁座８２・８３とで構成される
電磁切換弁Ｗは、図５にあるように、湯沸器ａに対して
給水配管ｂを、フロースイッチＦＬＳＷおよび電磁弁Ｓ
Ｖおよび高圧減圧弁ＨＶならびに低圧減圧弁ＬＶ等を介
して接続し、その湯沸器ａの缶体に、逃し弁Ａの接続口
１０を接続している状態において、湯沸器ａの湯取出口
に接続する給湯配管に設けた給湯栓ｃを閉じて湯の使用
を停止することで、フロースイッチＦＬＳＷによる流れ
の検出が無くなって電磁弁ＳＶが閉弁し、これにより、
湯沸器ａが低圧減圧弁ＬＶを介して給水配管ｂと接続す
る状態となったときに、スイッチＳＷがオフに作動して
電磁石９０に対する通電を遮断するよう制御して、管路
Ｐ２を開放して管路Ｐ１を閉塞した状態となり、また、
給湯栓ｃを開放して湯を使用することにより、給水配管
ｂに設けたフロースイッチＦＬＳＷが流れを検出するこ
とで電磁弁ＳＶが開弁して、湯沸器ａに対する給水が、
高圧減圧弁ＨＬにより制御された状態となったときに、
前記スイッチＳＷがオンに作動して電磁石９０に対し通
電が行なわれるように制御して、管路Ｐ２を閉塞して管
路Ｐ１を開放する状態となるようにしてある。Further, the valve bodies 84 and 85 provided at both upper and lower ends of the electromagnet 90 and its movable iron core 93, and the conduit P1.
As shown in FIG. 5, the solenoid directional control valve W composed of the valve seats 82 and 83 provided at the respective tip portions of P has the water supply pipe b for the water heater a, the flow switch FLSW and the solenoid valve. S
V, the high pressure reducing valve HV, the low pressure reducing valve LV, etc. are connected to each other, and in the state where the connection port 10 of the relief valve A is connected to the can body of the water heater a, By closing the hot water tap c provided in the hot water supply pipe connected to the outlet to stop the use of hot water, the flow switch FLSW does not detect the flow and the solenoid valve SV closes.
When the water heater a is connected to the water supply pipe b via the low-pressure pressure reducing valve LV, the switch SW is turned off to control the electromagnet 90 to be deenergized to open the pipe line P2. And the pipe line P1 is closed, and
When the hot water tap c is opened and hot water is used, the flow switch FLSW provided in the water supply pipe b detects the flow, and the solenoid valve SV is opened to supply water to the water heater a.
When it is controlled by the high pressure reducing valve HL,
The switch SW is activated to control the electromagnet 90 to be energized so that the conduit P2 is closed and the conduit P1 is opened.
【００１９】従って、この実施例の逃し弁Ａは、電磁石
９０に対する通電のオフで開弁圧力が、調整ネジ５によ
り設定した圧力となり、電磁石９０に対する通電によ
り、開弁圧設定バネ４が圧縮されて高圧に切換わるよう
になり、かつ、その切り換わりが湯沸器ａに接続した状
態において、その湯沸器ａに対する給水圧力の変化に対
応して行なわれるようになる。Therefore, in the relief valve A of this embodiment, the valve opening pressure becomes the pressure set by the adjusting screw 5 when the energization of the electromagnet 90 is turned off, and the valve opening pressure setting spring 4 is compressed by the energization of the electromagnet 90. The pressure is switched to high pressure, and the switching is performed in response to the change in the water supply pressure for the water heater a in the state of being connected to the water heater a.
【００２０】次に図６は別の実施例を示している。この
実施例は、開弁圧設定バネ４を、内外の２重の螺旋状に
並列する第１開弁圧設定バネ４−１と第２開弁圧設定バ
ネ４２との２本に分け、それの一方の第１開弁圧設定バ
ネ４−１は、それの支点側を調整ネジ５に支持せしめて
その調整ネジ５により所望の設定圧力に固定される通常
の開弁圧設定バネとし、他方の第２開弁圧設定バネ４−
２はそれの支点側を、加圧室Ｋ内の圧力変化を受けて駆
動する駆動部材Ｄと連繋する作動部材６に支持せしめ
て、その作動部材６が駆動部材Ｄにより該第２開弁圧設
定バネ４−２のバネ圧の方向に動くことで、設定圧力が
変化する可変の開弁圧設定バネとした例である。Next, FIG. 6 shows another embodiment. In this embodiment, the valve opening pressure setting spring 4 is divided into two, a first valve opening pressure setting spring 4-1 and a second valve opening pressure setting spring 42, which are arranged in a double spiral shape inside and outside. One of the first valve opening pressure setting springs 4-1 is a normal valve opening pressure setting spring whose fulcrum side is supported by the adjusting screw 5 and fixed to a desired setting pressure by the adjusting screw 5. Second valve opening pressure setting spring 4-
2, the fulcrum side thereof is supported by an actuating member 6 that is linked to a driving member D that is driven by the pressure change in the pressurizing chamber K, and the actuating member 6 is driven by the driving member D to generate the second valve opening pressure. This is an example of a variable valve opening pressure setting spring in which the set pressure changes by moving in the direction of the spring pressure of the setting spring 4-2.
【００２１】即ち、２本に分けたうちの一方の第１開弁
圧設定バネ４−１は、バネケース１４に螺合してある調
整ネジ５の下面と逃し弁機構２の弁体２１を支持するダ
イヤフラム３の上面との間に張設され、調整ネジ５の回
転による上下の変位により所望のバネ圧に設定されるよ
うにしてある。そして、他方の第２開弁圧設定バネ４−
２は、調整ネジ５の軸芯部位に開設した透孔に、一定の
距離を上下に移動自在に嵌挿せる作動部材６の下面と前
述のダイヤフラム３の上面との間に張設して、作動部材
６が加圧室Ｋ内の駆動部材Ｄにより上下に動く作動で、
バネ圧が可変となるようにしてある。That is, the first valve opening pressure setting spring 4-1 which is one of the two parts supports the lower surface of the adjusting screw 5 screwed into the spring case 14 and the valve body 21 of the relief valve mechanism 2. It is stretched between the upper surface of the diaphragm 3 and the upper surface of the diaphragm 3, and the desired spring pressure is set by the vertical displacement due to the rotation of the adjusting screw 5. Then, the other second valve opening pressure setting spring 4-
The reference numeral 2 is an extension hole formed in the axial center portion of the adjusting screw 5 and is stretched between the lower surface of the operating member 6 which can be vertically slidably inserted at a fixed distance and the upper surface of the diaphragm 3 to operate. When the member 6 moves up and down by the driving member D in the pressurizing chamber K,
The spring pressure is variable.
【００２２】また、この実施例では、駆動部材Ｄがダイ
ヤフラムになっていて、作動部材６はそれの上端側を、
このダイヤフラムよりなる駆動部材Ｄに一体的に組付け
てあるが、駆動部材Ｄは前述の図３に示す実施例の如く
加圧室Ｋ内に水密を保持して上下に摺動するピストンに
形成する場合がある。Further, in this embodiment, the drive member D is a diaphragm, and the actuating member 6 has its upper end side,
Although it is integrally assembled with the driving member D composed of this diaphragm, the driving member D is formed as a piston that slides up and down while maintaining water tightness in the pressurizing chamber K as in the embodiment shown in FIG. There is a case.
【００２３】そして、この実施例は、上述の点を除いた
その余の構成は、前述の実施例のものと変わりがないの
で、同効の構成部材に同一の符号を付して詳しい説明は
省略する。The remaining structure of this embodiment is the same as that of the above-mentioned embodiment except for the above-mentioned points. Omit it.
【００２４】この実施例は、第２開弁圧設定バネ４−２
が、図６の如く、加圧室Ｋ内の水圧が抜けて、作動部材
６が上昇作動の上限に押し上げられている状態のとき
に、バネ圧が零のフリーの状態となるように設定してあ
るとすれば、この状態のときには、第１開弁圧設定バネ
４−１と第２開弁圧設定バネ４−２とのそれぞれのバネ
圧の和により設定される開弁圧設定バネ４の設定圧力
が、第１開弁圧設定バネ４−１のバネ圧だけによって設
定されることになる。そして、駆動部材Ｄが、加圧室Ｋ
に管路Ｐ１を介して導かれてくる減圧弁ＨＶ・ＬＶより
上流側の水道水の圧力で、図７の如く作動部材６を、そ
れの鍔部６０が調整ネジ５の上面に衝合する下限位置ま
で動かして、第２開弁圧設定バネ４−２を押し縮めた状
態のときに、これにより第２開弁圧設定バネ４−２に設
定されるバネ圧が、既に設定されている前述の第１開弁
圧設定バネ４−１のバネ圧に付加されて、これらのバネ
圧の和により開弁圧設定バネ４の設定圧力が設定される
ようになる。In this embodiment, the second valve opening pressure setting spring 4-2 is used.
However, as shown in FIG. 6, when the water pressure in the pressurizing chamber K is released and the operating member 6 is pushed up to the upper limit of the ascending operation, the spring pressure is set to a zero free state. If so, in this state, the valve opening pressure setting spring 4 is set by the sum of the spring pressures of the first valve opening pressure setting spring 4-1 and the second valve opening pressure setting spring 4-2. Will be set only by the spring pressure of the first valve opening pressure setting spring 4-1. Then, the driving member D moves to the pressurizing chamber
At the pressure of the tap water upstream of the pressure reducing valves HV and LV, which is guided to the upper side of the adjusting screw 5, the collar portion 60 of the operating member 6 abuts against the upper surface of the adjusting screw 5. When the second valve opening pressure setting spring 4-2 is moved to the lower limit position and the second valve opening pressure setting spring 4-2 is compressed, the spring pressure set in the second valve opening pressure setting spring 4-2 is already set. In addition to the spring pressure of the first valve opening pressure setting spring 4-1, the sum of these spring pressures sets the set pressure of the valve opening pressure setting spring 4.
【００２５】従って、この実施例は、第１開弁圧設定バ
ネ４−１により設定される低圧の開弁圧力と、これに付
加される第２開弁圧設定バネ４−２のバネ圧により設定
される高圧の開弁圧力とに、切換えるのが、低圧の開弁
圧力と高圧の開弁圧力との差分のバネ圧を受けもつ、第
２開弁圧設定バネ４−２だけを駆動部材Ｄにより動かせ
ばよいことになって、図３に示す実施例よりも、駆動部
材Ｄの受圧面積を小さくでき、加圧室Ｋを含めた全体を
小型化し得るようになる。Therefore, in this embodiment, the low valve opening pressure set by the first valve opening pressure setting spring 4-1 and the spring pressure of the second valve opening pressure setting spring 4-2 added thereto are used. Only the second valve-opening pressure setting spring 4-2, which is responsible for the spring pressure of the difference between the low-pressure valve opening pressure and the high-pressure valve opening pressure, is switched to the set high-pressure valve opening pressure. By moving it by D, the pressure receiving area of the driving member D can be made smaller than that of the embodiment shown in FIG. 3, and the entire size including the pressurizing chamber K can be downsized.
【００２６】次に図８はさらに別の実施例を示してい
る。この実施例は、前述の図６の実施例の変形例であっ
て、開弁圧設定バネ４を、第１開弁圧設定バネ４−１と
第２開弁圧設定バネ４−２との２本のバネに分けて、そ
れの一方である第２開弁圧設定バネ４−２だけを、支点
側が動くようにすれば、小さな力で開弁圧設定バネ４の
設定圧力の変更切換えができるようになることから、電
磁石９０と、それのコア９１の内腔に嵌挿して前記電磁
石９０への通電と復元バネ９２とにより出入作動させる
可動の鉄芯９３とで構成される電磁アクチエータＳＡを
用い、それの可動の鉄芯９３で、この第２開弁圧設定バ
ネ４−２の支点側を動かす駆動部材Ｄを構成するように
して、加圧室Ｋおよび管路Ｐ１・Ｐ２ならびに切換弁機
構を省略するようにした例である。Next, FIG. 8 shows another embodiment. This embodiment is a modification of the embodiment of FIG. 6 described above, and the valve opening pressure setting spring 4 includes a first valve opening pressure setting spring 4-1 and a second valve opening pressure setting spring 4-2. If the fulcrum side of only one of the two springs, the second valve opening pressure setting spring 4-2, is moved, the change of the set pressure of the valve opening pressure setting spring 4 can be switched with a small force. Since it becomes possible, an electromagnetic actuator SA composed of an electromagnet 90 and a movable iron core 93 which is inserted into the inner cavity of the core 91 of the electromagnet 90 and energizes the electromagnet 90 and is moved in and out by a restoring spring 92. And the movable iron core 93 thereof is used to configure the driving member D for moving the fulcrum side of the second valve opening pressure setting spring 4-2, and the pressurizing chamber K and the conduits P1 and P2 and switching. In this example, the valve mechanism is omitted.
【００２７】即ち、弁箱１には、逃し口１３を開閉する
逃し弁機構２の、弁座２０に対向する弁体２１を支持す
るダイヤフラム３を組付け、これの外面側に組付けるバ
ネケース１４内に、開弁圧力を設定する開弁圧設定バネ
４を、第１開弁圧設定バネ４−１と第２開弁圧設定バネ
４−２との２本のバネに分けて装入し、それらのうちの
第１開弁圧設定バネ４−１を、前記ダイヤフラム３の外
面と前述バネケース１４の上端部に回転により上下方向
に変位するように螺合せる調整ネジ５の下面との間に張
設し、第２開弁圧設定バネ４−２を、前記ダイヤフラム
３の外面と前述の調整ネジ５の軸芯部位に開設せる透孔
に一定の範囲を上下方向に摺動するよう嵌挿した作動部
材６の下面との間に張設することについては、前述の図
６に示した実施例と同様であるが、バネケース１４の上
面側には、加圧室Ｋおよびそれを形成するブロック７０
および加圧室Ｋに連通させる管路Ｐ１・Ｐ２ならびに加
圧室Ｋと管路Ｐ１・Ｐ２との速通を切換える電磁切換弁
Ｗは無く、これを省略した構成となっている。That is, the valve case 1 is assembled with the diaphragm 3 for supporting the valve body 21 of the relief valve mechanism 2 for opening and closing the relief port 13 and facing the valve seat 20, and the spring case 14 is assembled on the outer surface side thereof. The valve-opening pressure setting spring 4 for setting the valve-opening pressure is separately loaded into two springs, a first valve-opening pressure setting spring 4-1 and a second valve-opening pressure setting spring 4-2. Between the outer surface of the diaphragm 3 and the lower surface of the adjusting screw 5 which is screwed onto the upper end of the spring case 14 so as to be vertically displaced by rotation. The second valve-opening pressure setting spring 4-2 is stretched, and is fitted into the outer surface of the diaphragm 3 and the through hole formed in the axial center portion of the adjusting screw 5 so as to slide vertically within a certain range. As for the tensioning between the lower surface of the operating member 6 and the lower surface of the operating member 6, the embodiment shown in FIG. It is similar to the upper surface of the spring case 14 to form pressure chambers K and it blocks 70
Further, there is no pipe line P1 / P2 communicating with the pressurizing chamber K and an electromagnetic switching valve W switching the high speed communication between the pressurizing chamber K and the pipe lines P1 / P2, and this is omitted.
【００２８】そして、バネケース１４の上面側には、電
磁石９０と、それのコア９１の内腔に前記電磁石９０へ
の通電のオン・オフと復元バネ９２とによりそのコア９
１の内腔から出入するよう作動する可動の鉄芯９３とか
らなる電磁アクチエーターＳＡが組付けてあって、これ
の出入作動する可動の鉄芯９３の下端側が、前述の第２
開弁圧設定バネ４−２の支点側を支持する作動部材６の
上面に衝合して、この作動部材６を上下に動かす駆動部
材Ｄとなるようにしてある。On the upper surface side of the spring case 14, the core 9 is provided with an electromagnet 90, an on / off state of energization of the electromagnet 90 in the inner cavity of the core 91, and a restoring spring 92.
The electromagnetic actuator SA, which is composed of a movable iron core 93 that operates so as to move in and out of the first lumen, is attached, and the lower end side of the movable iron core 93 that moves in and out of this is the above-mentioned second
The drive member D that abuts on the upper surface of the operating member 6 that supports the fulcrum side of the valve opening pressure setting spring 4-2 serves as a driving member D that moves the operating member 6 up and down.
【００２９】また、この実施例は、電磁アクチエーター
ＳＡの可動の鉄芯９３の復元バネ９２による上昇側のス
トロークのエンドを規制する軸杆状のバネ受座９５が、
電磁アクチエーターＳＡのケースに螺合した調節ネジ９
６により上下方向に変位調節されて、これにより、電磁
石９０への通電をオフとして、図８にあるよう、第２開
弁圧設定バネ４−２を伸び切った状態としたときに、そ
の状態における第２開弁圧設定バネ４−２のバネ圧を調
節し得るようにしてある。Further, in this embodiment, the axial rod-shaped spring seat 95 for restricting the end of the upward stroke by the restoring spring 92 of the movable iron core 93 of the electromagnetic actuator SA is
Adjustment screw 9 screwed into the case of the electromagnetic actuator SA
When the second valve opening pressure setting spring 4-2 is fully extended as shown in FIG. The spring pressure of the second valve opening pressure setting spring 4-2 is adjusted.
【００３０】この実施例は、電磁アクチエーターＳＡが
通電により作動すると、第２開弁圧設定バネ４−２が図
９にあるように押し縮められて、開弁圧力を高圧設定と
し、電磁アクチエーターＳＡの作動がオフに切換わる
と、図８にあるよう第２開弁圧設定バネ４−２が伸び出
して、開弁圧力を低圧設定とするようになる。In this embodiment, when the electromagnetic actuator SA is activated by energization, the second valve opening pressure setting spring 4-2 is compressed as shown in FIG. When the operation of the eater SA is switched off, the second valve opening pressure setting spring 4-2 extends as shown in FIG. 8 to set the valve opening pressure to a low pressure.
【００３１】[0031]
【発明の効果】以上説明したように、本発明による逃し
弁Ａは、ダイヤフラム型の逃し弁Ａの、ダイヤフラム３
に組付けた逃し弁機構２の弁体２１を閉弁側に付勢する
開弁圧設定バネ４を、それの可動側はダイヤフラム３の
外面側に連繋させるが、支点側はダイヤフラム３の外面
側に組付けたバネケース１４の上部側に設けた調整ネジ
５に、開弁圧設定バネ４のバネ圧の方向に可動に支持せ
しめておいて、この支点側を、調整ネジ５の外面側に設
けた水道水圧力を受人れる加圧室Ｋ内に水道水圧力によ
り前述のバネ圧の方向に駆動するよう収蔵せしめた駆動
部材Ｄに支持せしめて、加圧室Ｋに導かれる水道水の圧
力により設定圧力が自動的に高低に切換わるようにして
いるのだから、ダイヤフラム型の逃し弁Ａの構成を崩す
ことなく、簡略な構成をもって、逃し弁機構２が開弁し
てくる設定圧力が、自動的に高低に切換わるようにし
て、湯沸器ａから使い勝手の良い高圧の湯の取出しが行
なえるようにしながら、この湯沸器ａの缶内圧力の異常
な上昇を、給水圧力の高低の切換えに適応させて安全に
外部に逃せる逃し弁が得られるようになる。As described above, the relief valve A according to the present invention is the diaphragm 3 of the diaphragm type relief valve A.
The valve opening pressure setting spring 4 for urging the valve body 21 of the relief valve mechanism 2 assembled to the valve closing side is connected to the outer surface side of the diaphragm 3 on the movable side, but the outer surface of the diaphragm 3 on the fulcrum side. The adjustment screw 5 provided on the upper side of the spring case 14 attached to the side is movably supported in the direction of the spring pressure of the valve opening pressure setting spring 4, and the fulcrum side is set on the outer surface side of the adjustment screw 5. The supplied tap water pressure is supported by a driving member D housed in a pressurizing chamber K that can be received by the tap water pressure so that the tap water is guided to the pressurizing chamber K. Since the set pressure is automatically switched between high and low depending on the pressure, the set pressure at which the relief valve mechanism 2 opens can be set with a simple configuration without breaking the configuration of the diaphragm type relief valve A. , Automatically switch to high or low, and use from the water heater a. A relief valve is provided that allows an abnormal rise in the pressure inside the can of the water heater a to be adapted to the switching of the water supply pressure between high and low while safely allowing high-pressure hot water to be taken out. Will be available.
【図１】従前の逃し弁の縦断正面図である。FIG. 1 is a vertical sectional front view of a conventional relief valve.
【図２】同上逃し弁を湯沸器に組付けた給湯装置の展開
図である。FIG. 2 is a development view of the hot water supply device in which the relief valve is assembled to the water heater.
【図３】本発明による逃し弁の縦断正面図である。FIG. 3 is a vertical sectional front view of a relief valve according to the present invention.
【図４】同上逃し弁の作用の説明図である。FIG. 4 is an explanatory view of the action of the relief valve of the above.
【図５】同上逃し弁を湯沸器に組付けた給湯装置の展開
図である。FIG. 5 is a development view of the hot water supply apparatus in which the relief valve is assembled to the water heater.
【図６】同上逃し弁の別の実施例の縦断正面図である。FIG. 6 is a vertical sectional front view of another embodiment of the relief valve of the above.
【図７】同上逃し弁の作用の説明図である。FIG. 7 is an explanatory view of the action of the relief valve of the above.
【図８】同上逃し弁のさらに別の実施例の縦断正面図で
ある。FIG. 8 is a vertical cross-sectional front view of yet another embodiment of the relief valve of the above.
【図９】同上逃し弁の作用の説明図である。FIG. 9 is an explanatory view of the action of the relief valve of the above.
Ａ…逃し弁、ａ…湯沸器、ｂ…給水配管、ｃ…給湯栓、
Ｄ…駆動部材、Ｋ…加圧室、Ｐ１・Ｐ２…管路、Ｗ…電
磁切換弁、ＳＡ…電磁アクチエーター、ＦＬＳＷ…フロ
ースイッチ、ＳＷ…スイッチ、ＳＶ…電磁弁、ＬＶ・Ｈ
Ｖ…減圧弁、１…弁箱、１０…接続口、１１…排水口、
１２…隔壁、１３…逃し口、１４…バネケース、２…逃
し弁機構、２０…弁座、２１…弁体、３…ダイヤフラ
ム、４…開弁圧設定バネ、４−１…第１開弁圧設定バ
ネ、４−２…第２開弁圧設定バネ、４０…バネ支持座、
５…調整ネジ、６…作動部材、６０…鍔部、７０…ブロ
ック、７１…連通路、７２…連通室、７３…シール部
材、８０・８１…連通管、８２・８３…弁座、８４・８
５…弁体、９０…電磁石、９１…コア、９２…復元バ
ネ、９３…可動の鉄芯、９５…バネ受座、９６…調節ネ
ジ。A ... Relief valve, a ... Water heater, b ... Water supply pipe, c ... Hot water tap,
D ... Driving member, K ... Pressurizing chamber, P1, P2 ... Pipe line, W ... Electromagnetic switching valve, SA ... Electromagnetic actuator, FLSW ... Flow switch, SW ... Switch, SV ... Electromagnetic valve, LV.H
V ... Pressure reducing valve, 1 ... Valve box, 10 ... Connection port, 11 ... Drain port,
12 ... Partition wall, 13 ... Relief port, 14 ... Spring case, 2 ... Relief valve mechanism, 20 ... Valve seat, 21 ... Valve body, 3 ... Diaphragm, 4 ... Valve opening pressure setting spring, 4-1 ... First valve opening pressure Setting spring, 4-2 ... Second valve opening pressure setting spring, 40 ... Spring support seat,
5 ... Adjusting screw, 6 ... Operating member, 60 ... Collar part, 70 ... Block, 71 ... Communication passage, 72 ... Communication chamber, 73 ... Seal member, 80/81 ... Communication pipe, 82/83 ... Valve seat, 84 ... 8
5 ... Valve body, 90 ... Electromagnet, 91 ... Core, 92 ... Restoring spring, 93 ... Movable iron core, 95 ... Spring seat, 96 ... Adjusting screw.
Claims (4)
１０と大気に対して開放する排水口１１とを具備せしめ
た弁箱１の上面側に、前記接続口１０から排水口１１に
向う弁箱１内の流路の水圧に応動する撓曲自在のダイヤ
フラム３を組付け、弁箱１内には、排水口１１と通ずる
逃し口１３とそれに対向してその逃し口１３を開閉する
弁体２１らよりなる弁機構２とを装設し、その弁機構２
の弁体２１を前記ダイヤフラム３に組付け、ダイヤフラ
ム３の外面側にはバネケース１４を配して弁箱１に一体
的に組付け、そのバネケース１４内に、前記弁体２１を
閉弁側に付勢する開弁圧設定バネ４を、開弁圧力が所望
の設定圧力となるよう設定して収蔵して、それの可動側
を前記ダイヤフラム３の外面側に連繋し、支点側を前記
バネケース１４の上端側に設けた調整ネジ５に支持せし
めたダイヤフラム型の逃し弁Ａにおいて、逃し弁機構２
の逃し口１３に対向する弁体２１を閉弁側に付勢する開
弁圧設定バネ４の支点側を、バネケース１４の上部側に
設けた調整ネジ５に、開弁圧設定バネ４のバネ圧の方向
に可動に支持せ締め、その調整ネジ５の外面側には、水
道水圧力を受入れる加圧室Ｋを設け、その加圧室Ｋ内に
前記水道水圧力により前述バネ圧の方向に駆動する駆動
部材Ｄを収蔵し、その駆動部材Ｄに、前記ダイヤフラム
３に対し可動側を連繋する開弁圧設定バネ４の支点側を
支持せしめたことを特徴とする逃し弁。1. A connection port for connecting to a can body such as a water heater.
10 and a drain port 11 open to the atmosphere
From the connection port 10 to the drain port 11 on the upper surface side of the valve box 1
Flexible diamond that responds to the water pressure in the flow path inside the valve box 1
Assemble the flam 3 and communicate with the drain port 11 inside the valve box 1.
Opening and closing the escape port 13 and the escape port 13 facing it
A valve mechanism 2 including a valve body 21 is installed, and the valve mechanism 2
Assembling the valve body 21 of the above to the diaphragm 3,
A spring case 14 is arranged on the outer surface side of the valve 3 to be integrated with the valve box 1.
The valve body 21 in the spring case 14.
For the valve opening pressure setting spring 4 that biases the valve closing side, the valve opening pressure is desired.
Stored at the set pressure of the
Is connected to the outer surface side of the diaphragm 3, and the fulcrum side is connected to
Support the adjustment screw 5 provided on the upper end side of the spring case 14.
In the diaphragm type relief valve A, the relief valve mechanism 2
Of the valve body 21 facing the escape port 13 of the valve
Set the fulcrum side of the valve pressure setting spring 4 to the upper side of the spring case 14.
Adjust the adjusting screw 5 to the direction of the spring pressure of the valve opening pressure setting spring 4.
To the outer surface of the adjusting screw 5,
A pressurizing chamber K that receives the water pressure is provided in the pressurizing chamber K.
Drive for driving in the direction of the spring pressure by the tap water pressure
The member D is stored, and the diaphragm is attached to the driving member D.
The fulcrum side of the valve opening pressure setting spring 4 that connects the movable side to 3
A relief valve characterized by being supported .
１０と大気に対して開放する排水口１１とを具備せしめ
た弁箱１の上面側に、前記接続口１０から排水口１１に
向う弁箱１内の流路の水圧に応動する撓曲自在のダイヤ
フラム３を組付け、弁箱１内には、排水口１１と通ずる
逃し口１３とそれに対向してその逃し口１３を開閉する
弁体２１らよりなる弁機構２とを装設し、その弁機構２
の弁体２１を前記ダイヤフラム３に組付け、ダイヤフラ
ム３の外面側にはバネケース１４を配して弁箱１に一体
的に組付け、そのバネケース１４内に、前記弁体２１を
閉弁側に付勢する開弁圧設定バネ４を、開弁圧力が所望
の設定圧力となるよう設定して収蔵して、それの可動側
を前記ダイヤフラム３の外面側に連繋し、支点側 を前記
バネケース１４の上端側に設けた調整ネジ５に支持せし
めたダイヤフラム型の逃し弁Ａにおいて、前記ダイヤフ
ラム３の外面側に可動側を連繋する開弁圧設定バネ４
を、並列する第１開弁圧設定バネ４−１と第２開弁圧設
定バネ４−２との２本に分け、一方の第１開弁圧設定バ
ネ４−１の支点側を調整ネジ５に支持せしめ、他方の第
２開弁圧設定バネ４−２の支点側を、前記調整ネジ５に
該第２開弁圧設定バネ４−２のバネ圧の方向に可動に支
持せしめ、調整ネジ５の外面側には、水道水圧力を受入
れる加圧室Ｋを設け、その加圧室Ｋ内に前記水道水圧力
により前述のバネ圧の方向に駆動する駆動部材Ｄを収蔵
し、その駆動部材Ｄに前記第２開弁圧設定バネ４−２の
支点側を支持せしめたことを特徴とする逃し弁。2. A connection port for connecting to a can body such as a water heater.
10 and a drain port 11 open to the atmosphere
From the connection port 10 to the drain port 11 on the upper surface side of the valve box 1
Flexible diamond that responds to the water pressure in the flow path inside the valve box 1
Assemble the flam 3 and communicate with the drain port 11 inside the valve box 1.
Opening and closing the escape port 13 and the escape port 13 facing it
A valve mechanism 2 including a valve body 21 is installed, and the valve mechanism 2
Assembling the valve body 21 of the above to the diaphragm 3,
A spring case 14 is arranged on the outer surface side of the valve 3 to be integrated with the valve box 1.
The valve body 21 in the spring case 14.
For the valve opening pressure setting spring 4 that biases the valve closing side, the valve opening pressure is desired.
Stored at the set pressure of the
Is connected to the outer surface side of the diaphragm 3, and the fulcrum side is connected to
Support the adjustment screw 5 provided on the upper end side of the spring case 14.
In the diaphragm type relief valve A, the diaphragm
A valve opening pressure setting spring 4 that connects the movable side to the outer surface side of the ram 3.
Are arranged in parallel with the first valve opening pressure setting spring 4-1 and the second valve opening pressure setting.
It is divided into two parts, a constant spring 4-2 and one of the first valve opening pressure setting bar.
The fulcrum side of 4-1 is supported by the adjusting screw 5, and the other
2 Attach the adjustment screw 5 to the fulcrum side of the valve opening pressure setting spring 4-2.
It is movably supported in the direction of the spring pressure of the second valve opening pressure setting spring 4-2.
Hold it and receive tap water pressure on the outer surface of the adjusting screw 5.
The pressurizing chamber K is provided, and the tap water pressure is set in the pressurizing chamber K.
Stores the drive member D that drives in the direction of the spring pressure described above.
Then, the driving member D is provided with the second valve opening pressure setting spring 4-2.
A relief valve characterized by supporting the fulcrum side .
１０と大気に対して開放する排水口１１とを具備せしめ
た弁箱１の上面側に、前記接続口１０から排水口１１に
向う弁箱１内の流路の水圧に応動する撓曲自在のダイヤ
フラム３を組付け、弁箱１内には、排水口１１と通ずる
逃し口１３とそれに対向してその逃し口１３を開閉する
弁体２１らよりなる弁機構２とを装設し、その弁機構２
の弁体２１を前記ダイヤフラム３に組付け、ダイヤフラ
ム３の外面側にはバネケース１４を配して弁箱１に一体
的に組付け、そのバネケース１４内に、前記弁体２１を
閉弁側に付勢する開弁圧設定バネ４を、開弁圧力が所望
の設定圧力となるよう設定して収蔵して、それの可動側
を前記ダイヤフラム３の外面側に連繋し、支点側を前記
バネケース１４の上端側に設けた調整ネジ５に支持せし
めたダイヤフラム型の逃し弁Ａにおいて、逃し弁機構２
の逃し口１３に対向する弁体２１を閉弁側に付勢する開
弁圧設定バネ４の支点側を、バネケース１４の上部側に
設けた調整ネジ５に、該開弁圧設定バネ４のバネ圧の方
向に可動に支持せしめ、調整ネジ５の外面側には、水道
水圧力を受入れる加圧室Ｋを設け、その加圧室Ｋ内に前
記水道水圧力により前述バネ圧の方向に駆動する駆動部
材Ｄを収蔵し、その駆動部材Ｄに、前記ダイヤフラム３
に対し可動側を連繋する開弁圧設定バネ４の支点側を支
持せしめ、加圧室Ｋに、水道水圧力と連通する管路Ｐ１
と、排水口１１を介して大気側に連通する管路Ｐ２とを
接続連通し、それら管路Ｐ１・Ｐ２を電磁切換弁Ｗの作
動により交互に切換わって加圧室Ｋと連通するよう制御
せしめたことを特徴とする逃し弁。3. A connection port for connecting to a can body such as a water heater.
10 and a drain port 11 open to the atmosphere
From the connection port 10 to the drain port 11 on the upper surface side of the valve box 1
Flexible diamond that responds to the water pressure in the flow path inside the valve box 1
Assemble the flam 3 and communicate with the drain port 11 inside the valve box 1.
Opening and closing the escape port 13 and the escape port 13 facing it
A valve mechanism 2 including a valve body 21 is installed, and the valve mechanism 2
Assembling the valve body 21 of the above to the diaphragm 3,
A spring case 14 is arranged on the outer surface side of the valve 3 to be integrated with the valve box 1.
The valve body 21 in the spring case 14.
For the valve opening pressure setting spring 4 that biases the valve closing side, the valve opening pressure is desired.
Stored at the set pressure of the
Is connected to the outer surface side of the diaphragm 3, and the fulcrum side is connected to
Support the adjustment screw 5 provided on the upper end side of the spring case 14.
In the diaphragm type relief valve A, the relief valve mechanism 2
Of the valve body 21 facing the escape port 13 of the valve
Set the fulcrum side of the valve pressure setting spring 4 to the upper side of the spring case 14.
The spring pressure of the valve opening pressure setting spring 4 is applied to the adjustment screw 5 provided.
The adjustment screw 5 is supported on the outer surface side of the water supply.
A pressure chamber K for receiving water pressure is provided, and the pressure chamber K is
Drive unit that drives in the direction of the spring pressure described above by tap water pressure
The material D is stored, and the diaphragm 3 is attached to the driving member D.
The fulcrum side of the valve opening pressure setting spring 4 that connects the movable side to
Hold the pipe line P1 in the pressurizing chamber K to communicate with the tap water pressure.
And the pipeline P2 communicating with the atmosphere side through the drainage port 11.
Connect and connect these pipes P1 and P2 to the electromagnetic switching valve W
Control to switch to the pressurizing chamber K by alternating with the motion
A relief valve that is characterized by being squeezed.
２１に連繋するダイヤフラム３を弁箱１に組付け、その
ダイヤフラム３の外面側に、前記弁体２１を閉弁側に付
勢する開弁圧設定バネ４を、開弁圧力が所望の設定圧力
となるよう設定して連繋した逃し弁Ａにおいて、ダイヤ
フラム３の外面側に連繋する開弁圧設定バネ４を、並列
する第１開弁圧設定バネ４−１と第２開弁圧設定バネ４
−２との２本に分け、その一方の第２開弁圧設定バネ４
−２の支点側を、弁箱１の外面側に組付けた電磁アクチ
エーターＳＡにより該開弁圧設定バネ４のバネ圧の方向
に動くよう支持せしめた逃し弁。4. A diaphragm 3 connected to a valve body 21 of a relief valve mechanism 2 installed in the valve box 1 is assembled to the valve box 1, and the valve body 21 is closed on the outer surface side of the diaphragm 3. In the relief valve A in which the valve opening pressure setting spring 4 for urging the valve 3 is connected so that the valve opening pressure becomes a desired setting pressure, the valve opening pressure setting spring 4 connected to the outer surface side of the diaphragm 3 is connected in parallel. First valve opening pressure setting spring 4-1 and second valve opening pressure setting spring 4
-2, and one of the second valve opening pressure setting spring 4
A relief valve in which the fulcrum side of -2 is supported by an electromagnetic actuator SA mounted on the outer surface side of the valve box 1 so as to move in the direction of the spring pressure of the valve opening pressure setting spring 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5067455A JP2681246B2 (en) | 1993-03-03 | 1993-03-03 | Relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5067455A JP2681246B2 (en) | 1993-03-03 | 1993-03-03 | Relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06259142A JPH06259142A (en) | 1994-09-16 |
| JP2681246B2 true JP2681246B2 (en) | 1997-11-26 |
Family
ID=13345435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5067455A Expired - Fee Related JP2681246B2 (en) | 1993-03-03 | 1993-03-03 | Relief valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2681246B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200445943Y1 (en) * | 2007-12-04 | 2009-09-11 | 박주용 | safety valve |
| JP5467000B2 (en) * | 2010-06-08 | 2014-04-09 | リンナイ株式会社 | safety valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01314316A (en) * | 1988-06-14 | 1989-12-19 | Tlv Co Ltd | Relief mechanism for pressure reducing valve |
| JP2659152B2 (en) * | 1991-11-05 | 1997-09-30 | シーケーディ株式会社 | Pressure control valve |
-
1993
- 1993-03-03 JP JP5067455A patent/JP2681246B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06259142A (en) | 1994-09-16 |
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