JPH0133711B2 - - Google Patents
Info
- Publication number
- JPH0133711B2 JPH0133711B2 JP58203887A JP20388783A JPH0133711B2 JP H0133711 B2 JPH0133711 B2 JP H0133711B2 JP 58203887 A JP58203887 A JP 58203887A JP 20388783 A JP20388783 A JP 20388783A JP H0133711 B2 JPH0133711 B2 JP H0133711B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- water
- pressure
- support body
- piston
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
- Details Of Fluid Heaters (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は給湯装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a water heater.
（従来技術）
従来の給湯装置は、例えば第１図に示すように
安全弁ａを備える給湯器Ａと湯弁１、水弁２より
成る湯水混合栓Ｂを有し、ガス供給管Ｃは給湯器
Ａに、給水管Ｄは給水源４より止水栓５、逆止弁
３、又は逆止弁３′を介して湯水混合栓Ｂの水弁
２又は給湯器Ａに、給湯管Ｅは給湯器Ａ内の安全
弁ａを介して湯水混合栓Ｂの湯弁１に夫々配管さ
れており、上記給湯装置Ｆの給水管Ｄに設けられ
る逆止弁３，３′としては、一般的に第２図に示
す実公昭57―1175号公報のものが用いられてい
る。(Prior Art) A conventional water heater has, for example, a water heater A equipped with a safety valve a, a hot water mixing tap B consisting of a hot water valve 1 and a water valve 2, as shown in FIG. 1, and a gas supply pipe C is connected to the water heater A. A, the water supply pipe D connects the water supply source 4 to the water valve 2 of the hot water mixing faucet B or the water heater A via the stop valve 5, check valve 3, or check valve 3', and the water supply pipe E connects to the water heater A. The check valves 3 and 3', which are connected to the hot water valve 1 of the hot water mixing faucet B through the safety valve a in A, and which are installed in the water supply pipe D of the water heater F, are generally shown in FIG. The one shown in Japanese Utility Model Publication No. 1175-1983 is used.
この第２図のものについて説明すると、流入口
６、流出口７を連絡する流路８は弁筒９に一体形
成された弁座１０により一次側８ａと二次側８ｂ
とに区画され、前記弁座１０に対応して弁体１１
が二次側８ｂに配備されその背面１２と接続金具
１３との間に弾装されたバネ１４により常時弁座
１０に向けて弾圧されている。 To explain what is shown in FIG. 2, a flow path 8 connecting an inlet 6 and an outlet 7 is formed by a valve seat 10 integrally formed with a valve cylinder 9, which connects a primary side 8a and a secondary side 8b.
and a valve body 11 corresponding to the valve seat 10.
is arranged on the secondary side 8b and is constantly pressed toward the valve seat 10 by a spring 14 loaded between the back surface 12 and the connecting fitting 13.
このため非通水時には、弁体１１は弁座１０に
着座しており、この状態で万一二次側８ｂの圧力
が上昇した場合には、弁体１１は弁座１０に当接
したままで二次側流路８ｂを密閉し上昇圧力が逃
げられない。 Therefore, when water is not flowing, the valve body 11 is seated on the valve seat 10, and if the pressure on the secondary side 8b increases in this state, the valve body 11 remains in contact with the valve seat 10. This seals the secondary flow path 8b and prevents the rising pressure from escaping.
このため湯水混合栓Ｂの水弁２を閉じて熱湯の
みを吐出する場合、その熱により水弁２と逆止弁
３との給水管D1流路内の水が温められ、この水
の熱膨張により圧力が上昇しこの上昇圧力で水弁
２や給水管D1が破裂したり、これらの接続部分
が外れ漏水する。 Therefore, when the water valve 2 of the hot water mixing faucet B is closed and only hot water is discharged, the water in the water supply pipe D 1 flow path between the water valve 2 and the check valve 3 is warmed by the heat, and the heat of this water is The pressure increases due to the expansion, and this increased pressure may cause the water valve 2 and the water supply pipe D1 to burst, or their connections may come loose and cause water leakage.
また湯弁１、水弁２を共に開弁して混合水を使
用した後両弁１，２を閉弁したとしても給湯器Ａ
の予熱により給湯器Ａと逆止弁３′の給水管D2流
路内の水も温められ熱膨張して、該流路内の圧力
の上昇により給湯器Ａや給湯器Ａと逆止弁３′と
の給水管D2が破裂したり、これらの接続部分が
外れ漏水する。 Also, even if both hot water valves 1 and 2 are opened and mixed water is used, both valves 1 and 2 are closed, water heater A
Due to the preheating, the water in the water supply pipe D 2 flow path between water heater A and check valve 3' is also warmed and thermally expanded, and the pressure in the flow path increases, causing water heater A and water heater A and check valve 3' to heat up. The water supply pipe D2 to 3' may rupture, or these connections may come loose and cause water leakage.
一般に給湯器Ａ内には安全弁ａが設けられてい
て給湯器Ａ内が高圧になつた時、ドレンを放出し
てその圧力を解放するようになつているが、その
設定圧力は給湯器Ａに給水される水道の水圧より
高めに設定されている。 Generally, a safety valve a is installed inside the water heater A, and when the pressure inside the water heater A becomes high, the drain is released to release the pressure. The water pressure is set higher than the water pressure of the water supply.
従つて予熱により上昇する圧力が安全弁ａの設
定圧力を越えると安全弁ａが作動し水がドレンと
して無駄に放出される。 Therefore, when the pressure increased by preheating exceeds the set pressure of safety valve a, safety valve a is activated and water is wastefully discharged as drain.
一方、上昇圧力が小さく安全弁ａの設定圧力よ
り小さくても水道の水圧よりは高く、給湯器Ａが
冷えるまでその圧力が給湯器Ａに加わる等の不具
合がある。 On the other hand, even if the rising pressure is small and lower than the set pressure of the safety valve a, it is higher than the water pressure of the tap water, and there are problems such as the pressure being applied to the water heater A until the water heater A cools down.
（技術的課題）
本発明の技術的課題は、上記問題を解決し、水
の熱膨張による給湯側の逆止弁の二次側流路の圧
力の上昇を小さくせしめるようにすることであ
る。(Technical Problem) A technical problem of the present invention is to solve the above problems and to reduce the increase in pressure in the secondary flow path of the check valve on the hot water supply side due to thermal expansion of water.
（課題を解決する為の手段）
この技術的課題を解決する為に講じる技術的手
段は、給湯器の流入側は逆止弁を介して給水源
に、流出側は湯弁に夫々配管される給湯装置にお
いて、上記逆止弁は上記給湯源に連絡する１次側
口、給湯器に連絡する二次側口、及び上記両口の
間に設けられる弁座を有する弁筒と、弁座に対応
して逆止弁を構成し背面側に筒状部を有する支持
体と、弁筒内部に螺合され支持体の筒状部に対し
て背面側から接離可能に移動調節されるスピンド
ルと、支持体の筒状部内に水密状に且つ一次側の
みへ摺動自在に装着され支持体と共に圧縮室を形
成するピストンと、このピストンとスピンドルと
の間に弾装され該ピストンを二次側へ向けて弾圧
する抗力バネと、支持体を閉弁方向に弾圧する閉
弁バネと、圧縮室と一次側とを連絡する小孔とを
備えたものである。(Means for solving the problem) The technical measures taken to solve this technical problem are that the inflow side of the water heater is piped to the water supply source via a check valve, and the outflow side is piped to a hot water valve. In the water heater, the check valve includes a primary side port communicating with the hot water source, a secondary side port communicating with the water heater, a valve cylinder having a valve seat provided between the two ports, and a valve cylinder having a valve seat provided between the two ports. A support body correspondingly constitutes a check valve and has a cylindrical part on the back side, and a spindle which is screwed into the inside of the valve cylinder and is movably adjusted so as to be able to move toward and away from the cylindrical part of the support body from the back side. , a piston that is installed in a cylindrical part of the support body in a watertight manner and slidably only toward the primary side and forms a compression chamber together with the support body; It is equipped with a drag spring that presses the support body in the valve closing direction, a valve closing spring that presses the support body in the valve closing direction, and a small hole that communicates the compression chamber and the primary side.
（作用）
而して、逆止弁の二次側流路内の水が熱膨張し
た時、その圧力上昇によりピストンが支持体の筒
筒状部内を一次側へ向けて摺動して逆止弁内にお
ける二次側流路の容積を増大せしめるので、二次
側流路の圧力の上昇を軽減して機器の破損等を防
止することができる。(Function) When the water in the secondary flow path of the check valve thermally expands, the pressure rise causes the piston to slide inside the cylindrical portion of the support body toward the primary side, thereby preventing the non-return valve. Since the volume of the secondary flow path within the valve is increased, the increase in pressure in the secondary flow path can be reduced and damage to equipment can be prevented.
また、スピンドルを回動せしめると、該スピン
ドルは支持体の筒状部に対して進退して両者間の
間隔が変化し、これに伴なつて抗力バネの反発力
が増減されて逆止弁の作動圧力が調節される。 Furthermore, when the spindle is rotated, the spindle advances and retreats with respect to the cylindrical part of the support body, and the distance between them changes, and the repulsive force of the drag spring increases and decreases accordingly, causing the check valve to move forward and backward. Working pressure is adjusted.
さらに、スピンドルを支持体筒状部に当接させ
ると支持体の移動が規制されて止水される。 Furthermore, when the spindle is brought into contact with the cylindrical portion of the support, movement of the support is regulated and water is stopped.
（発明の効果）
本発明は以上の様に構成したので、下記の効果
を有する。(Effects of the Invention) Since the present invention is constructed as described above, it has the following effects.
従来の給湯装置は、安全弁を必要としていた
が、本発明では、逆止弁がその二次側流路の圧
力が上昇した時、ピストンの移動によつて二次
側流路の容積を増大して圧力上昇を吸収する、
いわば安全弁の機能を有しているので、安全弁
が不要となり、経済的に大なる効果がある。 Conventional water heaters required a safety valve, but in the present invention, when the pressure in the secondary flow path increases, the check valve increases the volume of the secondary flow path by moving the piston. to absorb the pressure increase,
Since it has the function of a so-called safety valve, there is no need for a safety valve, which has a great economic effect.
勿論、安全弁のように無駄にドレンを排出す
ることもない。 Of course, unlike a safety valve, there is no wasteful draining.
従来はウオーターハンマーによる瞬間的な圧
力衝撃で騒音が発生したり、配管接続部が緩む
ことがあつたが、本発明はウオーターハンマー
による衝撃をも吸収して上記欠点を解消でき
る。 In the past, the instantaneous pressure impact caused by the water hammer caused noise or loosened pipe connections, but the present invention can also absorb the impact caused by the water hammer and eliminate the above-mentioned drawbacks.
スピンドルの回動調整することによつて、逆
止弁の作動圧を調整できると共に、同スピンド
ルを支持体に当接するまで移動させると逆止弁
を固定して止水を行なうこともできる。 By adjusting the rotation of the spindle, the operating pressure of the check valve can be adjusted, and by moving the spindle until it comes into contact with the support, the check valve can be fixed and water can be stopped.
（実施例）
以下、この発明の一実施例を図面に基づき説明
する。(Example) Hereinafter, an example of the present invention will be described based on the drawings.
第３図は給湯装置Ｆであり、第１図と同様に給
湯器Ａと湯水混合栓Ｂを有する給湯装置Ｆに本発
明の主要部である逆止弁３，３′を給湯装置Ｆの
給水管Ｄに設けたものである。 FIG. 3 shows a water heater F, and as in FIG. This is installed in pipe D.
上記逆止弁３，３′について説明すると図中９
は弁筒、６，７はそれぞれ流入口、流出口であり
この流入口６と流出口７を連絡する流路８は、弁
座１０により一次側８ａと二次側８ｂとに区画さ
れており二次側８ｂから弁座１０に対応する弁体
１１が設けられている。 To explain the above check valves 3 and 3', see 9 in the figure.
is a valve cylinder, and 6 and 7 are an inlet and an outlet, respectively. A flow path 8 that connects the inlet 6 and the outlet 7 is divided by a valve seat 10 into a primary side 8a and a secondary side 8b. A valve body 11 corresponding to the valve seat 10 is provided from the secondary side 8b.
上記逆止弁３，３′について説明すると、図中
２０は、有底筒状に形成された筒状部２０ｂと蓋
９ｃのガイド孔９ｄ内を摺動する軸部２０ａとを
有するスピンドルである。２１は、円板部２１ａ
と筒状部２１ｂとからなる支持体で、円板部２１
ａには弁座１０に着座する弁体１１が取り付けら
れている。 To explain the check valves 3 and 3', reference numeral 20 in the figure is a spindle having a cylindrical portion 20b formed in the shape of a cylinder with a bottom and a shaft portion 20a that slides within the guide hole 9d of the lid 9c. . 21 is a disk portion 21a
and a cylindrical portion 21b, the disk portion 21
A valve body 11 that is seated on a valve seat 10 is attached to a.
支持体２１の筒状部２１ｂの外周面は、スピン
ドル２０の筒上部２０ｂの内周面と若干の間隙を
有しており、両者は摺動自在である。２２は支持
体２１の筒状部２１ｂの内周面に水密かつ摺動可
能に装着されるピストンで、該ピストン２２と支
持体２１とにより圧縮室２６を形成すると共に、
ピストン２２とスピンドル２０とにより圧力室２
７を形成する。圧縮室２６は小孔２５を介して一
次側８ａに連絡し、圧力室２７はスピンドル２０
と支持体２１との摺動部分の間隙により二次側８
ｂに連絡している。 The outer circumferential surface of the cylindrical portion 21b of the support body 21 has a slight gap with the inner circumferential surface of the cylindrical upper portion 20b of the spindle 20, and both are slidable. A piston 22 is watertightly and slidably mounted on the inner peripheral surface of the cylindrical portion 21b of the support body 21, and the piston 22 and the support body 21 form a compression chamber 26.
The pressure chamber 2 is formed by the piston 22 and the spindle 20.
form 7. The compression chamber 26 communicates with the primary side 8a through the small hole 25, and the pressure chamber 27 communicates with the spindle 20.
Due to the gap between the sliding portion of the support 21 and the secondary side 8
I am contacting b.
２３，２４は閉弁バネと抗力バネで、抗力バネ
２４の弾性力は閉弁バネ２３より強い。また、２
８はピストン２２の抜け防止用の止めリングであ
る。 Reference numerals 23 and 24 denote a valve closing spring and a resistance spring, and the elastic force of the resistance spring 24 is stronger than that of the valve closing spring 23. Also, 2
8 is a retaining ring for preventing the piston 22 from coming off.
作動について説明すると、水が一次側８ａから
二次側８ｂに向けて流れようとする時は、一次側
の水圧により、弁体１１及びピストン２２が装着
された支持体２１がスピンドル２０内を閉弁バネ
２３の弾圧に抗して摺動し、弁体１１が弁座１０
より離れて、水が一次側８ａより二次側８ｂに向
けて流れる。即ち、ピストン２２は支持体２１に
設けた止めリング２８により抜けを防止されてい
ると共に、閉弁バネ２３より強い抗力バネ２４に
より止めリング２８側に弾圧されているので、ピ
ストン２２は支持体２１と共に一体的に作動し、
一次側８ａから二次側８ｂへの水の流動が止まれ
ば、閉弁バネ２３によりピストン２２が支持体２
１と共に下降し、弁体１１が弁座１０に着座し
て、一次側８ａと二次側８ｂとの連絡を絶つ。 To explain the operation, when water is about to flow from the primary side 8a to the secondary side 8b, the support body 21 on which the valve body 11 and the piston 22 are attached closes the inside of the spindle 20 due to the water pressure on the primary side. The valve body 11 slides against the pressure of the valve spring 23, and the valve body 11 is moved against the valve seat 10.
Further apart, water flows from the primary side 8a towards the secondary side 8b. That is, the piston 22 is prevented from coming off by the retaining ring 28 provided on the support 21, and is also pressed against the retaining ring 28 by the drag spring 24, which is stronger than the valve closing spring 23. works integrally with
When the flow of water from the primary side 8a to the secondary side 8b stops, the piston 22 is moved to the support body 2 by the valve closing spring 23.
1, the valve body 11 is seated on the valve seat 10, and the communication between the primary side 8a and the secondary side 8b is cut off.
そして、熱膨張等により、二次側８ｂの圧力が
一次側の圧力より上昇した時、圧力室２７は二次
側８ｂに連絡しているので、圧力室２７の圧力も
上昇する。この圧力室２７の圧力上昇により、ピ
ストン２２を抗力バネ２４の弾圧力に抗して押動
せしめ、かつ圧縮室２６内の水を小孔２５より一
次側８ａに押し出し、ピストン２２が支持体２１
の筒状部２１ｂの内周面を一次側８ａに向けて摺
動し、圧力室２７の容積を拡大するをもつて、二
次側８ｂの容積が増大し、二次側８ｂの圧力の上
昇を小さくすることが出来る。 When the pressure on the secondary side 8b rises above the pressure on the primary side due to thermal expansion or the like, the pressure in the pressure chamber 27 also rises because the pressure chamber 27 is connected to the secondary side 8b. This pressure increase in the pressure chamber 27 pushes the piston 22 against the elastic force of the drag spring 24, and pushes out the water in the compression chamber 26 from the small hole 25 to the primary side 8a.
As the inner peripheral surface of the cylindrical portion 21b slides toward the primary side 8a and the volume of the pressure chamber 27 is expanded, the volume of the secondary side 8b increases, and the pressure on the secondary side 8b increases. can be made smaller.
またスピンドル２０の筒状部２０ｂの外周面に
は螺子が設けられ、弁筒９の弁座１０に対して進
退自在に取り付けられており、筒状部２０ｂの底
壁部分と支持体２１の筒状部２１ｂの端部との距
離を調整することによつて閉弁バネ２４の反発力
が変化し、弁体１１の作動圧力が調整される。 Further, a screw is provided on the outer peripheral surface of the cylindrical portion 20b of the spindle 20, and is attached to the valve seat 10 of the valve cylinder 9 so as to be able to move forward and backward. By adjusting the distance from the end of the shaped portion 21b, the repulsive force of the valve closing spring 24 is changed, and the operating pressure of the valve body 11 is adjusted.
また、スピンドル２０を支持体２１の背面側に
当接するまで移動させると、支持体２１は着座状
態で固定される。従つて、上記逆止弁は止水栓の
機能をも有している。 Further, when the spindle 20 is moved until it comes into contact with the back side of the support body 21, the support body 21 is fixed in the seated state. Therefore, the check valve also has the function of a water stop valve.
第１図は従来例を示す給湯装置の模式図、第２
図は従来例を示す逆止弁の一例を示す断面図、第
３図は本発明の実施の一例を示す給湯装置の模式
図、第４図は本発明の主要部である逆止弁の断面
図。
図中、１……湯弁、３，３′……逆止弁、４…
…給水源、８ａ……一次側、８ｂ……二次側、９
……弁筒、１０……弁座、２１……支持体、２１
ｂ……筒状部、２２……ピストン、２３……閉弁
バネ、２４……抗力バネ、２５……小孔。
Figure 1 is a schematic diagram of a conventional water heater;
The figure is a sectional view showing an example of a conventional check valve, FIG. 3 is a schematic diagram of a water heater showing an example of the implementation of the present invention, and FIG. 4 is a cross-sectional view of a check valve that is the main part of the present invention. figure. In the figure, 1... hot water valve, 3, 3'... check valve, 4...
...Water supply source, 8a...Primary side, 8b...Secondary side, 9
... Valve cylinder, 10 ... Valve seat, 21 ... Support body, 21
b...Cylindrical part, 22...Piston, 23...Valve closing spring, 24...Drag spring, 25...Small hole.
Claims (1)
流出側は湯弁に夫々配管される給湯装置におい
て、上記逆止弁は上記給湯源に連絡する一次側
口、給湯器に連絡する二次側口、及び上記両口の
間に設けられる弁座を有する弁筒と、弁座に対応
して逆止弁を構成し背面側に筒状部を有する支持
体と、弁筒内部に螺合され支持体の筒状部に対し
て背面側から接離可能に移動調節されるスピンド
ルと、支持体の筒状部内に水密状に且つ一次側の
みへ摺動自在に装着され支持体と共に圧縮室を形
成するピストンと、このピストンと支持体との間
に弾装され該ピストンを二次側へ向けて弾圧する
抗力バネと、支持体を閉弁方向に弾圧する閉弁バ
ネと、圧縮室と一次側とを連絡する小孔とを備え
ることを特徴とする給湯装置。1 The inflow side of the water heater is connected to the water supply source via a check valve,
In a hot water supply device in which the outflow side is piped to a hot water valve, the check valve has a primary side port communicating with the hot water source, a secondary side port communicating with the water heater, and a valve seat provided between the two ports. a support body that constitutes a check valve corresponding to the valve seat and has a cylindrical part on the back side; A spindle that can be moved and adjusted in a separable manner, a piston that is mounted in a cylindrical portion of the support body in a watertight manner and slidably only on the primary side and forms a compression chamber together with the support body, and between the piston and the support body. The compressor is characterized by comprising a drag spring that is loaded in the piston and presses the piston toward the secondary side, a valve closing spring that presses the support in the valve closing direction, and a small hole that communicates the compression chamber and the primary side. Water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20388783A JPS6096853A (en) | 1983-10-31 | 1983-10-31 | Hot water supplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20388783A JPS6096853A (en) | 1983-10-31 | 1983-10-31 | Hot water supplier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6096853A JPS6096853A (en) | 1985-05-30 |
| JPH0133711B2 true JPH0133711B2 (en) | 1989-07-14 |
Family
ID=16481358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20388783A Granted JPS6096853A (en) | 1983-10-31 | 1983-10-31 | Hot water supplier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6096853A (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5245936Y2 (en) * | 1972-05-12 | 1977-10-19 | ||
| JPS5261543A (en) * | 1975-11-13 | 1977-05-21 | Toray Eng Co Ltd | Nutritious solution cultivating method |
| JPS5534036A (en) * | 1978-08-31 | 1980-03-10 | Kirin Brewery Co Ltd | Preparation of adenosine-5'-triphosphoric acid |
| JPS55152870A (en) * | 1979-05-16 | 1980-11-28 | Sumitomo Chemical Co | Dyeing of polyester fiber |
-
1983
- 1983-10-31 JP JP20388783A patent/JPS6096853A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6096853A (en) | 1985-05-30 |
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