JPH0249479Y2 - - Google Patents
Info
- Publication number
- JPH0249479Y2 JPH0249479Y2 JP10858285U JP10858285U JPH0249479Y2 JP H0249479 Y2 JPH0249479 Y2 JP H0249479Y2 JP 10858285 U JP10858285 U JP 10858285U JP 10858285 U JP10858285 U JP 10858285U JP H0249479 Y2 JPH0249479 Y2 JP H0249479Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve seat
- faucet
- valve
- contact surface
- water supply
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 78
- 241000234435 Lilium Species 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000025508 response to water Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、通水に応じて自動的にガス供給弁を
開閉するダイヤフラム作動装置を給水通路に設け
ると共にこのダイヤフラム作動装置の上流側に通
水を開閉する水栓を設けてなる元止め式湯沸器に
関する。[Detailed description of the invention] [Field of industrial application] The present invention provides a diaphragm operating device in the water supply passage that automatically opens and closes the gas supply valve in response to water flow, and also provides a diaphragm actuating device upstream of the diaphragm operating device. This invention relates to a stop-off water heater equipped with a faucet for opening and closing water.
この種の元止め式湯沸器においては、例えば第
７図に示す如く、制御ダイヤフラム３ｃにより低
圧室３ａと高圧室３ｂに分離されたダイヤフラム
作動装置３を備え、低圧室３ａは連通路４を介し
て給水通路１に設けたベンチユリ２の負圧発生部
に連通し、高圧室３ｂは給水通路１のベンチユリ
２より上流側に連通して、通水量に応じてガス弁
５の開度を変化させ、熱交換器６を加熱するバー
ナ７へのガス供給量を制御して、出湯温度をほぼ
一定に保つようにしている。
This type of stop-start water heater is equipped with a diaphragm operating device 3 that is separated into a low pressure chamber 3a and a high pressure chamber 3b by a control diaphragm 3c, and the low pressure chamber 3a has a communication passage 4, as shown in FIG. The high-pressure chamber 3b communicates with the negative pressure generating part of the bench lily 2 provided in the water supply passage 1 through the vent lily 2, and the high pressure chamber 3b communicates with the upstream side of the bench lily 2 of the water supply passage 1, and changes the opening degree of the gas valve 5 according to the amount of water flow. The amount of gas supplied to the burner 7 that heats the heat exchanger 6 is controlled to keep the temperature of the hot water almost constant.
この種の元止め式湯沸器においては、通水を開
閉する水栓８の操作を急激に行うと通水の慣性等
により過渡的に低圧室３ａと高圧室３ｂの差圧が
急激に変動し、ガス弁５が急激に大きく開閉して
バーナ７に爆発的な燃焼を生じたり、これにより
パイロツトバーナが消えたりすることがある。本
考案はこのような問題を解決しようとするもので
ある。
In this type of stop-start type water heater, when the faucet 8 that opens and closes the water flow is suddenly operated, the differential pressure between the low pressure chamber 3a and the high pressure chamber 3b transiently fluctuates due to the inertia of the water flow, etc. However, the gas valve 5 may open and close suddenly and widely, causing explosive combustion in the burner 7, which may cause the pilot burner to go out. The present invention attempts to solve such problems.
このために、本考案による元止め式湯沸器にお
いては、第１図〜第６図に示す如く、熱交換器１
５とベンチユリ１４を設けた給水通路１３と、ハ
ウジングＨの内部を制御ダイヤフラム２１により
低圧室２２と高圧室２３に分離してなり低圧室２
２は連通路１９を介して前記ベンチユリ１４の負
圧発生部に連通されると共に高圧室２３は前記負
圧発生部以外の部分において前記給水通路１３に
連通されて前記熱交換器１５を加熱するバーナ１
８へのガス通路１７に設けられたガス弁５０を開
閉するダイヤフラム作動装置２０と、このダイヤ
フラム作動装置２０より上流側において前記給水
通路１３に設けられて同給水通路への通水を開閉
する水栓３０，３０Ａ，３０Ｂ，３０Ｃを備えて
なる元止め式ガス湯沸器において、前記水栓３
０，３０Ａ，３０Ｂ，３０Ｃは前記ハウジングＨ
に一体的に設けられ円筒状の内径部３２，３２Ｂ
と端部に弁シート部３３，３３Ｂを有する弁座部
材３１，３１Ｂと、この弁座部材に対し同軸に移
動可能に前記ハウジングＨにより支持され前記弁
シート部３３，３３Ｂに接離する当接面３９とこ
の当接面の中央から突出するほぼ円筒状の嵌合部
４０，４０Ｂ，４０Ｃとこの嵌合部の先に続くテ
ーパ部４１，４１Ａ，４１Ｂ，４１Ｃを有する水
栓弁体３５，３５Ａ，３５Ｂ，３５Ｃよりなり、
前記嵌合部４０，４０Ｂ，４０Ｃは前記当接面３
９が前記弁シート部３３，３３Ｂに当接した状態
においては多少の隙間を隔てて前記弁座部材３
１，３１Ｂの内径部３２，３２Ｂ内に嵌合すると
共に前記当接面３９が前記弁シート部３３，３３
Ｂから離れた状態においては前記内径部３２，３
２Ｂ外に位置するよう構成したことを特徴とする
ものである。
For this reason, in the stop-start type water heater according to the present invention, as shown in FIGS. 1 to 6, the heat exchanger 1
5 and a water supply passage 13 provided with a bench lily 14, and the inside of the housing H are separated into a low pressure chamber 22 and a high pressure chamber 23 by a control diaphragm 21.
2 is communicated with the negative pressure generating section of the bench lily 14 via the communicating passage 19, and the high pressure chamber 23 is communicated with the water supply passage 13 at a portion other than the negative pressure generating section to heat the heat exchanger 15. Burner 1
A diaphragm operating device 20 that opens and closes a gas valve 50 provided in a gas passage 17 to the water supply passage 17; In a stop-start type gas water heater comprising taps 30, 30A, 30B, and 30C, the tap 3
0, 30A, 30B, 30C are the housing H
A cylindrical inner diameter portion 32, 32B provided integrally with the
and a valve seat member 31, 31B having valve seat portions 33, 33B at the end thereof, and an abutment that is supported by the housing H so as to be movable coaxially with respect to the valve seat member and that comes into contact with and separates from the valve seat portions 33, 33B. A faucet valve body 35 having a surface 39, substantially cylindrical fitting portions 40, 40B, 40C protruding from the center of this contact surface, and tapered portions 41, 41A, 41B, 41C continuing beyond the fitting portions; Consists of 35A, 35B, 35C,
The fitting portions 40, 40B, 40C are connected to the contact surface 3.
9 is in contact with the valve seat parts 33, 33B, the valve seat member 3 is separated from the valve seat member 3 with a slight gap.
1, 31B, and the abutment surface 39 is fitted into the inner diameter portion 32, 32B of the valve seat portion 33, 33.
In the state away from B, the inner diameter portions 32, 3
It is characterized by being configured to be located outside 2B.
水栓３０を開けばダイヤフラム作動装置２０の
低圧室２２と高圧室２３の間には給水通路１３の
通水量に応じた差圧が生じ、ガス弁５０の開度を
制御して、熱交換器１５を加熱するバーナ１８に
通水量に応じた量のガスを供給する。この操作に
際して水栓３０を急激に開いても、先ず弁座部材
３１，３１Ｂの内径部３２，３２Ｂと嵌合部４
０，４０Ｂ，４０Ｃの隙間を通つて少量の通水が
生じ、次いでセツトされた通水量となるので通水
量の増加の割合はゆるやかとなり、従つて低圧室
２２と高圧室２３の差圧の変化速度はゆるやかと
なる。水栓３０を閉じれば低圧室２２と高圧室２
３の間の圧力差が消滅するのでガス弁５０は閉と
なり、バーナ１８は消火する。この操作に際して
水栓３０を急激に閉じれば、通水の慣性により水
栓３０の下流、特にベンチユリ１４より下流側に
大きな負圧が瞬間的に生じようとする。しかしな
がら、本考案においては、内径部３２，３２Ｂと
嵌合部４０，４０Ｂ，４０Ｃの隙間により通水量
が絞られてから当接面３９が弁シート部３３，３
３Ｂに当接するので通水量の変化の割合はゆるや
かとなり、瞬間的負圧の増大はわずかとなる。従
つて低圧室２２と高圧室２３の差圧の瞬間的増大
はわずかとなる。
When the water faucet 30 is opened, a pressure difference is generated between the low pressure chamber 22 and the high pressure chamber 23 of the diaphragm actuating device 20 in accordance with the amount of water flowing through the water supply passage 13, and the opening degree of the gas valve 50 is controlled to control the heat exchanger. Gas is supplied to the burner 18 that heats the burner 15 in an amount corresponding to the amount of water flowing through the burner 15 . Even if the faucet 30 is suddenly opened during this operation, first the inner diameter portions 32, 32B of the valve seat members 31, 31B and the fitting portion 4
A small amount of water flows through the gaps of 0, 40B, and 40C, and then reaches the set water flow rate, so the rate of increase in the water flow rate is gradual, and therefore the differential pressure between the low pressure chamber 22 and the high pressure chamber 23 changes. The speed becomes slow. When the faucet 30 is closed, the low pressure chamber 22 and the high pressure chamber 2
3 disappears, the gas valve 50 is closed and the burner 18 is extinguished. If the faucet 30 is suddenly closed during this operation, a large negative pressure is instantaneously generated downstream of the faucet 30, particularly downstream of the bench lily 14, due to the inertia of water flow. However, in the present invention, after the amount of water flowing is restricted by the gap between the inner diameter portions 32, 32B and the fitting portions 40, 40B, 40C, the contact surface 39 is connected to the valve seat portions 33, 33.
3B, the rate of change in water flow rate is gradual, and the instantaneous increase in negative pressure is small. Therefore, the instantaneous increase in the differential pressure between the low pressure chamber 22 and the high pressure chamber 23 is small.
上述の如く、本考案によれば元止め式湯沸器の
水栓を急激に開閉してもダイヤフラム作動装置の
低圧室と高圧室の間に生ずる差圧の変化速度はゆ
るやかになり、また瞬間的増大もわずかとなるの
で、ガス弁が急激に開くことなく、従つてバーナ
へのガス供給量が急激に増大して爆発的燃焼を生
じたり、これによりパイロツトバーナが消火した
りすることがなくなる。
As mentioned above, according to the present invention, even if the faucet of a stop-off type water heater is suddenly opened and closed, the rate of change in the differential pressure that occurs between the low pressure chamber and the high pressure chamber of the diaphragm operating device becomes gradual, and Since the increase in fuel consumption is also small, the gas valve will not open suddenly, and the amount of gas supplied to the burner will not suddenly increase, causing explosive combustion, which will prevent the pilot burner from extinguishing. .
以下に添付図面により実施例の説明をする。第
１図〜第３図に示す第１実施例において、給水入
口１３ａから給湯管１６に至る給水通路１３には
順次水栓３０、ダイヤフラム作動装置２０、ベン
チユリ１４、熱交換器１５及び給湯量を手動によ
り調節する給湯管１６が設けられている。第１図
及び第２図に示す如く、主ハウジング１０、弁ハ
ウジング１１及びカバー１２よりなるハウジング
Ｈの内部には、両ハウジング１０，１１に挟持さ
れた制御ダイヤフラム２１により、低圧室２２と
高圧室２３に分離されたダイヤフラム作動装置２
０が形成され、低圧室２２は連通路１９を介して
ベンチユリ１４の負圧発生部に連通され、高圧室
２３内は給水通路１３が通過するようになつてい
る。制御ダイヤフラム２１の中心には先端部がテ
ーパ状に広がる栓体２５が弁ハウジング１１側に
突出して取り付けられ、給水入口１３ａからの給
水を高圧室２３内に導入する入口開口２６と共に
給水圧力が変動した場合に通水量の変動を緩和す
る水ガバナを構成している。開口２６の周囲部と
制御ダイヤフラム２１の間にはスプリング２７が
介装されている。
Embodiments will be described below with reference to the accompanying drawings. In the first embodiment shown in FIGS. 1 to 3, a water faucet 30, a diaphragm operating device 20, a bench lily 14, a heat exchanger 15, and a hot water supply amount are sequentially installed in the water supply passage 13 from the water supply inlet 13a to the hot water supply pipe 16. A manually adjusted hot water pipe 16 is provided. As shown in FIGS. 1 and 2, a control diaphragm 21 sandwiched between the main housing 10, a valve housing 11, and a cover 12 has a low pressure chamber 22 and a high pressure chamber inside the housing H, which consists of a main housing 10, a valve housing 11, and a cover 12. Diaphragm actuating device 2 separated into 23
0 is formed, the low pressure chamber 22 is communicated with the negative pressure generating portion of the bench lily 14 via the communication passage 19, and the water supply passage 13 passes through the high pressure chamber 23. A stopper 25 whose tip expands in a tapered shape is attached to the center of the control diaphragm 21 so as to protrude toward the valve housing 11 side, and the water supply pressure fluctuates together with the inlet opening 26 that introduces the water supply from the water supply inlet 13a into the high pressure chamber 23. It constitutes a water governor that alleviates fluctuations in water flow when A spring 27 is interposed between the periphery of the opening 26 and the control diaphragm 21 .
主ハウジング１０内に形成されたガス通路１７
には、熱交換器１５を加熱するバーナ１８へのガ
ス供給量を制御するガス弁５０が設けられてい
る。ガス弁５０は制御ダイヤフラム２１と同軸に
ガス通路１７に形成されたガス弁座５２と、ガス
弁体５１と、ガス弁体５１をガス弁座５２に向け
て付勢するスプリング５３からなり、ガス弁体５
１はロツド５４を介して制御ダイヤフラム２１に
接続されている。ガス弁体５１は、給水通路１３
に通水されていない状態ではスプリング５３及び
２７の作用によりガス弁座５２に当接してガス弁
５０を閉じ、給水通路１３に通水されれば通水量
に応じて生ずる低圧室２２と高圧室２３の圧力差
によりスプリング５３に抗して移動してガス弁５
０を開くようになつている。 Gas passage 17 formed within main housing 10
is provided with a gas valve 50 that controls the amount of gas supplied to the burner 18 that heats the heat exchanger 15. The gas valve 50 consists of a gas valve seat 52 formed in the gas passage 17 coaxially with the control diaphragm 21, a gas valve body 51, and a spring 53 that biases the gas valve body 51 toward the gas valve seat 52. Valve body 5
1 is connected to the control diaphragm 21 via a rod 54. The gas valve body 51 is connected to the water supply passage 13
When water is not flowing through the water supply passage 13, the springs 53 and 27 contact the gas valve seat 52 to close the gas valve 50, and when water flows through the water supply passage 13, a low pressure chamber 22 and a high pressure chamber are formed depending on the amount of water flowing through the water supply passage 13. 23 moves against the spring 53 and the gas valve 5
It is designed to open 0.
第１図に示す如く、ダイヤフラム作動装置２０
の高圧室２３への入口開口２６と給水入口１３ａ
との間には、弁ハウジング１１と一体に形成され
た円筒状の弁座部材３１と水栓弁体３５からなる
水栓３０が設けられている。弁座部材３１は円筒
状の内径部３２と端部に弁シート部３３を有し、
入口開口２６と同軸に形成されて、弁ハウジング
１１内部を、給水入口１３ａが開口される入口弁
室４３と出口開口２６が設けられる出口弁室４４
とに区画している。また弁ハウジング１１には、
主ハウジング１０と反対側に、両弁室４３，４４
を覆つてカバー１２が設けられ、弁ハウジング１
１とカバー１２の間には、水栓弁体３５を支持す
るゴム等の弾性体からなる水栓ダイヤフラム４６
が挟持され、水栓ダイヤフラム４６とカバー１２
の間に制御室４５が形成されている。水栓弁体３
５は水栓ダイヤフラム４６の中央部に一体に形成
された厚肉部３６と、その中心孔に弾性的に嵌着
されたボス部材３７と、このボス部材３７と一体
に形成された補強座金３８からなつている。厚肉
部３６の周辺には弁座部材３１の弁シート部３３
に当接可能な環状の当接面３９が形成され、その
中央には円筒状の嵌合部４０が突出して形成さ
れ、また嵌合部４０に続いてテーパ部４１が形成
されている。嵌合部４０は、第１図及び第２図に
示す如く当接面３９が弁シート部３３に当接した
状態においては、多少の隙間隔てて弁座部材３１
の内径部３２内に嵌合し、また第３図に示す如く
当接面３９が弁シート部３３から離れた状態にお
いては内径部３２外に移動するように各部の寸法
関係は定められている。各部の寸法の一例をあげ
れば、内径部３２の径は10mm、嵌合部４０の外径
は9.9mmで高さは0.5mm、テーパ部４１の高さは２
mmで中心軸線に対する角度は45度である。なお、
嵌合部４０には多少テーパを設けてもよい。ボス
部材３７の中心には制御孔３７ａが設けられ、ま
た補強座金３８と水栓ダイヤフラム４６には入口
弁室４３と制御室４５を連通する小孔４７が設け
られている。 As shown in FIG. 1, a diaphragm actuator 20
The inlet opening 26 to the high pressure chamber 23 and the water supply inlet 13a
A faucet 30 consisting of a cylindrical valve seat member 31 integrally formed with the valve housing 11 and a faucet valve body 35 is provided between the valve housing 11 and the faucet valve body 35 . The valve seat member 31 has a cylindrical inner diameter part 32 and a valve seat part 33 at the end,
The interior of the valve housing 11 is formed coaxially with the inlet opening 26, and includes an inlet valve chamber 43 in which the water supply inlet 13a is opened, and an outlet valve chamber 44 in which the outlet opening 26 is provided.
It is divided into In addition, the valve housing 11 includes
Both valve chambers 43, 44 are located on the opposite side of the main housing 10.
A cover 12 is provided to cover the valve housing 1 .
1 and the cover 12 is a faucet diaphragm 46 made of an elastic body such as rubber that supports the faucet valve body 35.
are sandwiched between the faucet diaphragm 46 and the cover 12.
A control room 45 is formed between them. Faucet valve body 3
Reference numeral 5 denotes a thick wall portion 36 integrally formed at the center of the faucet diaphragm 46, a boss member 37 elastically fitted into the center hole of the thick wall portion 36, and a reinforcing washer 38 integrally formed with the boss member 37. It is made up of The valve seat portion 33 of the valve seat member 31 is located around the thick portion 36.
An annular contact surface 39 that can be brought into contact with the contact surface 39 is formed, and a cylindrical fitting portion 40 is formed protruding from the center of the contact surface 39, and a tapered portion 41 is formed following the fitting portion 40. In the state where the contact surface 39 is in contact with the valve seat part 33 as shown in FIGS. 1 and 2, the fitting part 40 is attached to the valve seat member 31 with a certain gap.
The dimensional relationship of each part is determined so that the valve fits inside the inner diameter part 32 of the valve, and moves outside the inner diameter part 32 when the contact surface 39 is separated from the valve seat part 33 as shown in FIG. . To give an example of the dimensions of each part, the diameter of the inner diameter part 32 is 10 mm, the outer diameter of the fitting part 40 is 9.9 mm and the height is 0.5 mm, and the height of the tapered part 41 is 2 mm.
mm and the angle to the central axis is 45 degrees. In addition,
The fitting portion 40 may be slightly tapered. A control hole 37a is provided in the center of the boss member 37, and a small hole 47 is provided in the reinforcing washer 38 and faucet diaphragm 46 to communicate the inlet valve chamber 43 and the control chamber 45.
カバー１２にはパイロツトバルブ４８がロツド
４８ｂを介して水栓弁体３５と同軸に摺動可能に
支持され、その先端のシール材４８ａは制御孔３
７ａ外端の環状突起３７ｂに接離して制御孔３７
ａを開閉する。パイロツトバルブ４８はカバー１
２との間に設けられた弱いスプリング４９により
ボス部材３７に向けて付勢され、シール材４８ａ
により制御孔３７ａが閉じられた状態において
は、スプリング４９により水栓弁体３５の当接面
３９が弁座部材３１先端の弁シート部３３と一旦
接触すれば、制御室４５の圧力は小孔４７を介し
て入口弁室４３の圧力すなわち給水圧力と等しく
なり、一方出口弁室４４の圧力は大気圧となるの
で、当接面３９はこの圧力差により弁シート部３
３に押圧されて通水は確実に停止され、水栓３０
は第１図及び第２図に示す閉状態となる。つまみ
又はレバー等を介して手動等によりパイロツトバ
ルブ４８を弱いスプリング４９に抗して右向に引
けば、制御孔３７ａは開いて制御室４５の圧力は
出口弁室４４の圧力（大気圧）と等しくなるの
で、水栓ダイヤフラム４６は入口弁室４３の給水
圧力により制御室４５側に移動し、これにより水
栓弁体３５は弁シート部３３から離れると共に嵌
合部４０は内径部３２外に位置して、水栓３０は
第３図に示す開状態となる。上述の如く水栓３０
をダイヤフラム弁とすれば、水栓３０の作動力が
減少し、操作が容易となるが、本考案の水栓３０
はダイヤフラム弁に限らず、通常の水栓を用いて
もよい。 A pilot valve 48 is slidably supported on the cover 12 coaxially with the faucet valve body 35 via a rod 48b, and a sealing material 48a at the tip thereof is connected to the control hole 3.
The control hole 37 is connected to and separated from the annular projection 37b at the outer end of 7a.
Open and close a. Pilot valve 48 is cover 1
2, the sealing material 48a is biased toward the boss member 37 by a weak spring 49 provided between the
When the control hole 37a is closed, once the contact surface 39 of the faucet valve body 35 comes into contact with the valve seat portion 33 at the tip of the valve seat member 31 by the spring 49, the pressure in the control chamber 45 is reduced to the small hole. 47, the pressure in the inlet valve chamber 43 becomes equal to the water supply pressure, and on the other hand, the pressure in the outlet valve chamber 44 becomes atmospheric pressure, so the abutting surface 39 is forced to press against the valve seat portion 3 due to this pressure difference.
3 to ensure that the water flow is stopped and the faucet 30
is in the closed state shown in FIGS. 1 and 2. If the pilot valve 48 is manually pulled to the right against the weak spring 49 using a knob or lever, the control hole 37a opens and the pressure in the control chamber 45 becomes equal to the pressure in the outlet valve chamber 44 (atmospheric pressure). Therefore, the faucet diaphragm 46 moves toward the control chamber 45 due to the water supply pressure in the inlet valve chamber 43, and as a result, the faucet valve body 35 separates from the valve seat portion 33, and the fitting portion 40 moves outside the inner diameter portion 32. 3, the faucet 30 is in the open state shown in FIG. Faucet 30 as mentioned above
If a diaphragm valve is used, the operating force of the faucet 30 will be reduced and the operation will be easier, but the faucet 30 of the present invention
The valve is not limited to a diaphragm valve, and a regular water faucet may also be used.
水栓３０が開いた状態においては、給水通路１
３の通水量は給湯栓（図示せず）の開度を変える
ことにより変化する。通水量が増大すればダイヤ
フラム作動装置２０によりガス弁５０の開度も増
大して通水量に応じた量のガスがバーナ１８に供
給されて熱交換器１５を加熱するので、通水量が
変化しても出湯温度はほゞ所定の値に保たれる。
なお、本実施例においては出湯温度の調節装置は
省略したが、必要に応じ公知の温度調節装置を設
けてもよい。 When the faucet 30 is open, the water supply passage 1
The amount of water flowing in step 3 changes by changing the opening degree of the hot water tap (not shown). When the amount of water passing increases, the opening degree of the gas valve 50 is also increased by the diaphragm operating device 20, and an amount of gas corresponding to the amount of water passing is supplied to the burner 18 and heating the heat exchanger 15, so the amount of water passing changes. However, the hot water temperature is maintained at a predetermined value.
In addition, although the adjustment device for the tapping temperature is omitted in this embodiment, a known temperature adjustment device may be provided if necessary.
給湯栓の開度を開いた状態において、水栓４０
を急激に開いても、当接面３９が弁シート部３３
から離れた直後には、第３図の２点鎖線に示す如
く、嵌合部４０は内径部３２内に位置するので、
先ずこの両部３２，４０の隙間を通つて少量の通
水が生じ、次いで水栓弁体３５は第３図の実線に
示す全開状態となり、セツトされた通水量となる
ので通水量の増加の割合はゆるやかとなる。従つ
てバーナ１８へのガス供給量の増加もゆるやかと
なり、爆発的な燃焼を生ずることはない。 When the hot water tap is open, the water tap 40
Even if the valve seat part 33 is suddenly opened, the contact surface 39
Immediately after being separated from the fitting part 40, the fitting part 40 is located within the inner diameter part 32, as shown by the two-dot chain line in FIG.
First, a small amount of water flows through the gap between the two parts 32 and 40, and then the faucet valve body 35 becomes fully open as shown by the solid line in FIG. The ratio will be gradual. Therefore, the amount of gas supplied to the burner 18 increases slowly, and explosive combustion does not occur.
水栓４０を閉じて給水通路１３の通水を止めれ
ばスプリング５３及び２７の作用によりガス弁５
０は閉じ、バーナ１８は消火する。この場合にお
いて水栓３０を急激に閉じれば、通水の慣性によ
り水栓３０の下流側に瞬間的に負圧が生じようと
する。しかしながら、当接面３９が弁シート部３
３に当接して通水を遮断する直前に嵌合部４０が
内径部３２内に入り込み、この両部４０，３２の
間の隙間により通水両を絞るので通水量の変化の
割合はゆるやかとなり、瞬間的負圧の増大もわず
かとなる。従つてガス弁５０の開度の瞬間的増大
はわずかとなり、爆発的燃焼を生ずることはな
い。 When the water faucet 40 is closed to stop the flow of water through the water supply passage 13, the action of the springs 53 and 27 causes the gas valve 5 to
0 is closed and burner 18 is extinguished. In this case, if the faucet 30 is suddenly closed, a negative pressure is instantaneously generated on the downstream side of the faucet 30 due to the inertia of water flow. However, the contact surface 39 is
The fitting part 40 enters into the inner diameter part 32 immediately before it comes into contact with 3 and blocks the water flow, and the gap between the two parts 40 and 32 restricts the water flow, so the rate of change in the amount of water flow becomes gradual. , the instantaneous increase in negative pressure is also small. Therefore, the instantaneous increase in the opening degree of the gas valve 50 is small, and explosive combustion does not occur.
第４図に示す第２実施例は、嵌合部４０に続く
テーパ部４１Ａの角度を小（中心軸線に対する角
度は30度）とし、その先に角度の大なる第２テー
パ部４２Ｂを形成している。これによれば嵌合部
４０が内径部３２内に嵌合される際のガイド性が
向上するので水栓弁体３５の耐久性が向上する。 In the second embodiment shown in FIG. 4, a tapered portion 41A following the fitting portion 40 has a small angle (the angle with respect to the central axis is 30 degrees), and a second tapered portion 42B with a larger angle is formed beyond it. ing. According to this, the guiding performance when the fitting part 40 is fitted into the inner diameter part 32 is improved, so that the durability of the faucet valve body 35 is improved.
第５図に示す第３実施例は、弁座部材３１Ｂの
内径部３２Ｂと弁シート部３３Ｂのの境界に環状
の凹部３４Ｂを形成している。水中に異物が含ま
れている場合、この異物が弁座部材と水栓弁体の
間、特に当接面３９と嵌合部４０の間の隅角部に
噛み込んで水栓の作動に異常を生ずることがある
が、第３実施例によればこのような異物は凹部３
４内に一旦逃げ、水栓３０Ｂが開いた際に流れ去
るので、異物の噛み込みによる水栓３０Ｂの作動
の異常を減少させることができる。第３実施例で
は、凹部３４Ｂは段状に形成したが、２点鎖線に
示す如くテーパ状に形成してもよい。 In the third embodiment shown in FIG. 5, an annular recess 34B is formed at the boundary between the inner diameter portion 32B of the valve seat member 31B and the valve seat portion 33B. If foreign matter is contained in the water, this foreign matter may get caught between the valve seat member and the faucet valve body, especially at the corner between the contact surface 39 and the fitting part 40, causing abnormal operation of the faucet. However, according to the third embodiment, such foreign matter is removed from the recess 3.
4 and then flows away when the faucet 30B is opened, so that abnormalities in the operation of the faucet 30B due to foreign objects being caught can be reduced. In the third embodiment, the recess 34B is formed in a stepped shape, but it may be formed in a tapered shape as shown by the two-dot chain line.
第６図に示す第４実施例は、水栓弁体３５Ｃの
ボス部３７Ｃに嵌合部４０Ｃとテーパ部４１Ｃを
形成し、ボス部３７Ｃと当接面３９の間に凹部３
４Ｃを形成し、異物の噛み込みを防止したもので
ある。第４実施例においてはボス部３７Ｃと補強
座金３８Ｃは別体とし、制御ダイヤフラム４６と
一体の厚肉部３６Ｃをボス部３７Ｃと補強座金３
８Ｃの間に挟んで止め環３７ｃにより抜止め保持
している。 In the fourth embodiment shown in FIG. 6, a fitting portion 40C and a tapered portion 41C are formed in a boss portion 37C of a faucet valve body 35C, and a recess 3 is formed between the boss portion 37C and the contact surface 39.
4C to prevent foreign matter from getting caught. In the fourth embodiment, the boss part 37C and the reinforcing washer 38C are separate parts, and the thick part 36C integrated with the control diaphragm 46 is connected to the boss part 37C and the reinforcing washer 3.
8C and is held in place by a retaining ring 37c.
第１図〜第６図は本考案の実施例を示し、第１
図は第１実施例の主要部を切断した全体構造図、
第２図は弁座部材と水栓弁体の当接した状態にお
ける部分拡大断面図、第３図は同じく離れた状態
における部分拡大断面図、第４図〜第６図はそれ
ぞれ第２〜第４実施例の第２図相当図、第７図は
従来例の第１図相当図である。
符号の説明、１３……給水通路、１４……ベン
チユリ、１５……熱交換器、１７……ガス通路、
１８……バーナ、１９……連通路、２０……ダイ
ヤフラム作動装置、２１……制御ダイヤフラム、
２２……低圧室、２３……高圧室、３０，３０
Ａ，３０Ｂ，３０Ｃ……水栓、３１，３１Ｂ……
弁座部材、３２，３２Ｂ……内径部、３３，３３
Ｂ……弁シート部、３５……水栓弁体、３９……
当接面、４０，４０Ｂ，４０Ｃ……嵌合部、４
１，４１Ａ，４１Ｂ，４１Ｃ……テーパ部、Ｈ…
…ハウジング。
Figures 1 to 6 show embodiments of the present invention;
The figure is an overall structural diagram of the first embodiment with main parts cut away.
Fig. 2 is a partially enlarged sectional view of the valve seat member and faucet valve body in a state where they are in contact with each other, Fig. 3 is a partially enlarged sectional view of the valve seat member and faucet valve body in a state where they are separated, and Figs. FIG. 7 is a diagram corresponding to FIG. 2 of the fourth embodiment, and FIG. 7 is a diagram corresponding to FIG. 1 of the conventional example. Explanation of symbols, 13... Water supply passage, 14... Bench lily, 15... Heat exchanger, 17... Gas passage,
18...Burner, 19...Communication path, 20...Diaphragm actuator, 21...Control diaphragm,
22...Low pressure chamber, 23...High pressure chamber, 30,30
A, 30B, 30C... Faucet, 31, 31B...
Valve seat member, 32, 32B...inner diameter part, 33, 33
B... Valve seat portion, 35... Faucet valve body, 39...
Contact surface, 40, 40B, 40C...fitting portion, 4
1, 41A, 41B, 41C... Taper part, H...
…housing.
Claims (1)
ウジングの内部を制御ダイヤフラムにより低圧室
と高圧室に分離してなり低圧室は連通路を介して
前記ベンチユリの負圧発生部に連通されると共に
高圧室は前記負圧発生部以外の部分において前記
給水通路に連通されて前記熱交換器を加熱するバ
ーナへのガス通路に設けられたガス弁を開閉する
ダイヤフラム作動装置と、このダイヤフラム作動
装置より上流側において前記給水通路に設けられ
て同給水通路への通水を開閉する水栓を備えてな
る元止め式ガス湯沸器において、前記水栓は前記
ハウジングに一体的に設けられ円筒状の内径部と
端部に弁シート部を有する弁座部材と、この弁座
部材に対し同軸に移動可能に前記ハウジングによ
り支持され前記弁シート部に接離する当接面とこ
の当接面の中央から突出するほぼ円筒状の嵌合部
とこの嵌合部の先に続くテーパ部を有する水栓弁
体よりなり、前記嵌合部は前記当接面が前記弁シ
ート部に当接した状態においては多少の隙間を隔
てて前記弁座部材の内径部内に嵌合すると共に前
記当接面が前記弁シート部から離れた状態におい
ては前記内径部外に位置するよう構成したことを
特徴とする元止め式ガス湯沸器。 A water supply passage provided with a heat exchanger and a bench lily, and the inside of the housing are separated into a low pressure chamber and a high pressure chamber by a control diaphragm. The chamber includes a diaphragm actuator for opening and closing a gas valve provided in a gas passage to a burner that communicates with the water supply passage and heats the heat exchanger in a portion other than the negative pressure generating part, and a diaphragm actuator upstream of the diaphragm actuator. In the stop type gas water heater, the faucet is provided in the water supply passage on the side and opens and closes the flow of water to the water supply passage, and the faucet is provided integrally with the housing and has a cylindrical inner diameter. a valve seat member having a valve seat portion at a portion and an end portion; a contact surface that is supported by the housing so as to be movable coaxially with respect to the valve seat member and that contacts and separates from the valve seat portion; and a contact surface that extends from the center of the contact surface. It consists of a faucet valve body having a protruding approximately cylindrical fitting part and a tapered part continuing beyond the fitting part, and the fitting part is in a state where the contact surface is in contact with the valve seat part. A stop that fits into the inner diameter of the valve seat member with a slight gap, and is configured such that the contact surface is positioned outside the inner diameter when the contact surface is separated from the valve seat. Type gas water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10858285U JPH0249479Y2 (en) | 1985-07-16 | 1985-07-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10858285U JPH0249479Y2 (en) | 1985-07-16 | 1985-07-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6218551U JPS6218551U (en) | 1987-02-04 |
| JPH0249479Y2 true JPH0249479Y2 (en) | 1990-12-26 |
Family
ID=30985908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10858285U Expired JPH0249479Y2 (en) | 1985-07-16 | 1985-07-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0249479Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003227578A (en) * | 2002-02-04 | 2003-08-15 | Rinnai Corp | Solenoid feed water valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2839898B2 (en) * | 1989-03-22 | 1998-12-16 | 本田技研工業株式会社 | Auto stand device |
-
1985
- 1985-07-16 JP JP10858285U patent/JPH0249479Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003227578A (en) * | 2002-02-04 | 2003-08-15 | Rinnai Corp | Solenoid feed water valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6218551U (en) | 1987-02-04 |
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