JPS6250730B2 - - Google Patents
Info
- Publication number
- JPS6250730B2 JPS6250730B2 JP8225481A JP8225481A JPS6250730B2 JP S6250730 B2 JPS6250730 B2 JP S6250730B2 JP 8225481 A JP8225481 A JP 8225481A JP 8225481 A JP8225481 A JP 8225481A JP S6250730 B2 JPS6250730 B2 JP S6250730B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- differential pressure
- control
- valve
- diaphragm
- 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 76
- 238000001514 detection method Methods 0.000 claims description 19
- 238000010586 diagram Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
Description
【発明の詳細な説明】
本発明はガスや石油を燃料とする瞬間式給湯機
に用いられる水制御装置に関するもので、制御ダ
イヤフラムに加わる圧力差を調節弁の開度を変え
ることによつて変化させて制御ダイヤフラムと連
動して流入水量を制御する弁の開度を変更させる
と共に、検出ダイヤフラムには調節弁の開度に関
係なく同じ特性を示す圧力差を作用させた構成を
有している。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water control device used in instantaneous water heaters that use gas or oil as fuel, and is capable of changing the pressure difference applied to a control diaphragm by changing the opening degree of a control valve. The control diaphragm works with the control diaphragm to change the opening of the valve that controls the amount of inflow water, and the detection diaphragm has a configuration in which a pressure difference that exhibits the same characteristics regardless of the opening of the control valve is applied. .
従来、水の流通経路中に直接調節弁を設けてそ
の前後の圧力差をダイヤフラムに作用せしめる方
式の制御器が用いられているが、流路中に挿入す
る都合上、調節弁の寸法が大きくなるばかりでな
く操作する力も多く必要であつた。又、このよう
に調節弁を流路中に挿入すると、その開度によつ
て水量−差圧特性が変化するので通水されたこと
を検出する場合に、その検出水量値も調節弁開度
によつて変化していた。この検出水量値の変化は
特に先止式湯沸器の場合には蛇口で水量を絞ると
消火する原因となつて不便を生じる原因であつ
た。 Conventionally, a controller has been used in which a control valve is installed directly in the water flow path and the pressure difference before and after the valve is applied to a diaphragm, but the size of the control valve is large because it is inserted into the flow path. It required a lot of power not only to be able to use it, but also to manipulate it. In addition, when a control valve is inserted into a flow path in this way, the water volume-differential pressure characteristic changes depending on its opening degree, so when detecting water flow, the detected water volume value also depends on the control valve opening degree. It changed depending on. This change in the detected water amount value is a cause of inconvenience, especially in the case of a stop-start type water heater, as it causes the fire to go out when the water amount is turned off with a faucet.
本発明では、水量検出用のダイヤフラムには調
節弁開度に関係せず同じ水量−差圧特性を示す圧
力差を作用せしめる一方、この水量−差圧特性を
流路中に直接挿入しない調節弁によつて分圧して
得られた圧力差を制御ダイヤフラムに作用せしめ
ている。このことによつて、調節弁の小径化と操
作力の低減化を図ると共に検出水量の一定化を果
すことを目的としている。 In the present invention, a pressure difference that exhibits the same water volume-differential pressure characteristic is applied to the diaphragm for detecting the water amount regardless of the opening degree of the control valve, while the control valve does not directly insert this water amount-differential pressure characteristic into the flow path. The pressure difference obtained by partial pressure is applied to the control diaphragm. This aims to reduce the diameter of the control valve and reduce the operating force, as well as to stabilize the amount of water detected.
以下、本発明の実施例に基づいて詳細な説明を
行う。 Hereinafter, detailed explanation will be given based on embodiments of the present invention.
第１図は水制御装置の断面図を含むガス瞬間湯
沸器の一実施構成図であつて、１は水制御装置で
水は流入路２から弁室３に入り弁４と制御孔５の
隙間を通つて一次室６に到る。７は弁４と連動し
て動く制御ダイヤフラムであつて、その他面側は
二次室８を形成しその中には制御スプリング９が
一次室６側へ付勢して収納されている。水は一次
室６の中で直角に曲がり、差圧孔１０と差圧弁１
１と差圧スプリング１２で形成する差圧発生部１
３を通過する。一次室６と二次室８を連通する第
一連通路１４と、差圧発生部１３の差圧弁１１の
下流部１５と二次室８を連通する第二連通路１６
が設けられ、第一連通路１４の途中には調節弁１
７が配置されている。この調節弁１７はギアボツ
クス１８とモータ１９から成る駆動機構２０によ
つて回転させられてその開度が変化する。 FIG. 1 is an implementation configuration diagram of a gas instantaneous water heater including a sectional view of a water control device, in which 1 is a water control device, and water enters a valve chamber 3 from an inlet passage 2 and a control hole 5. It reaches the primary chamber 6 through the gap. Reference numeral 7 denotes a control diaphragm that moves in conjunction with the valve 4, and the other side forms a secondary chamber 8, in which a control spring 9 is housed biased toward the primary chamber 6. The water bends at right angles in the primary chamber 6 and connects to the differential pressure hole 10 and the differential pressure valve 1.
1 and a differential pressure generating section 1 formed by a differential pressure spring 12.
Pass 3. A first communication passage 14 that communicates between the primary chamber 6 and the secondary chamber 8; and a second communication passage 16 that communicates the downstream portion 15 of the differential pressure valve 11 of the differential pressure generating section 13 with the secondary chamber 8.
is provided, and a control valve 1 is provided in the middle of the first communication passage 14.
7 is placed. This control valve 17 is rotated by a drive mechanism 20 consisting of a gearbox 18 and a motor 19 to change its opening degree.
直角状に曲がつて形成されている一次室６には
もう一枚の検出ダイヤフラム２１が臨んでおり、
その背面は背圧室２２を形成する。背圧室２２は
差圧発生部１３の差圧弁１１の下流部１５と導通
孔２３で連絡しており、検出スプリング２４で一
次室６側へ押圧附勢している。検出ダイヤフラム
２１の動作は軸２５でケーシングより外部へ取り
出され検出スイツチ２６を作動させている。 Another detection diaphragm 21 faces the primary chamber 6 which is bent at a right angle.
Its back side forms a back pressure chamber 22 . The back pressure chamber 22 communicates with the downstream portion 15 of the differential pressure valve 11 of the differential pressure generating section 13 through a communication hole 23, and is urged toward the primary chamber 6 by a detection spring 24. The operation of the detection diaphragm 21 is taken out from the casing by a shaft 25 to actuate a detection switch 26.
以上の構成を持つ水制御装置１を通過した水は
熱交換器２７で加熱され、出湯路２８から流出す
る。この途中に温度検出器２９によつて湯温が測
定される。 The water that has passed through the water control device 1 having the above configuration is heated by the heat exchanger 27 and flows out from the hot water outlet path 28. During this time, the temperature detector 29 measures the temperature of the water.
次にガスは、ガス供給路３０から第１電磁弁３
１、第２電磁弁３２、入力制御弁３３を通つてバ
ーナ３４で燃える。又、一部のガスは第１電磁弁
３１の下流でパイロツト回路３５に分流しパイロ
ツトバーナ３６で燃焼をする。 Next, the gas is supplied from the gas supply path 30 to the first solenoid valve 3
1. It passes through the second solenoid valve 32 and the input control valve 33 and burns in the burner 34. Further, a part of the gas is diverted to a pilot circuit 35 downstream of the first solenoid valve 31 and is combusted in a pilot burner 36.
又、３７は出湯温度を設定する温度設定器であ
つて、この設定値と温度検出器２９の検出値とを
比較して、その差が無くなるようにコントローラ
３８は入力制御弁３３又は水量制御装置１の駆動
機構２０用モータ１９を作動させている。 Further, 37 is a temperature setting device for setting the hot water temperature, and the controller 38 compares this set value with the detected value of the temperature detector 29 and controls the input control valve 33 or the water flow control device so that the difference is eliminated. The motor 19 for the first drive mechanism 20 is operated.
瞬間湯沸器としての動作を先ず説明する。水回
路に通水が始まると検出スイツチ２６から信号が
コントローラ３８に送られ、その結果、第１電磁
弁３１が開かれパイロツトバーナ３６にガスを送
り点火させる。図示していない炎検知装置で点火
が確認されると第２電磁弁３２も開きメインのバ
ーナ３４で燃焼が始まる。水は熱交換器２７で加
熱され、温度が設定値と一致するように入力制御
弁３３によつてガス燃焼量が制御される。ところ
で、最大入力状態になつても、検出温度が設定温
度より低い場合にはモータ１９を駆動して水量制
御装置１の設定値を変えることによつて水量を減
少させて湯温を高めるように作動する。こうし
て、入力制御弁３３と水量制御装置１の両者を制
御することによつて、水温や水量に関係なく設定
温度を常に一定に維持しているのである。 First, the operation as an instantaneous water heater will be explained. When water starts flowing through the water circuit, a signal is sent from the detection switch 26 to the controller 38, and as a result, the first solenoid valve 31 is opened and gas is sent to the pilot burner 36 to ignite it. When ignition is confirmed by a flame detection device (not shown), the second solenoid valve 32 also opens and combustion begins in the main burner 34. The water is heated by the heat exchanger 27, and the amount of gas combustion is controlled by the input control valve 33 so that the temperature matches the set value. By the way, even in the maximum input state, if the detected temperature is lower than the set temperature, the motor 19 is driven to change the set value of the water flow control device 1 to reduce the water volume and increase the water temperature. Operate. In this way, by controlling both the input control valve 33 and the water amount control device 1, the set temperature is always maintained constant regardless of the water temperature or water amount.
次に、第２図の特性図を用いて水量制御装置１
の水量制御動作を説明する。差圧発生部１３の差
圧弁１１は中央に孔を有しており、この部分を通
過することによる水圧差は差圧スプリング１２に
打勝つて差圧弁を開く方向に作用する。従つて、
差圧発生部１３の前後の圧力は第２図に於てＡの
ように示される。ここで、くの字型に変化する変
曲点は、差圧孔１０から差圧弁１１が離れ始める
状態を示している。検出ダイヤフラム２１には、
この特性Ａの差圧が作用している。一方、制御ダ
イヤフラム７は、その二次室８は第一連通路１４
で一次室６とも連絡しているので、第２図の特性
Ａよりも差圧値が少くなつている。調節弁１７を
閉じれば特性Ａが作用することになるが、その開
度を増すと特性Ｂ、特性Ｃのように制御ダイヤフ
ラム７に作用する差圧値は減少する。さて、良く
知られているように図に示す弁構成は水圧上昇が
あつても水量をほぼ一定に保つガバナ効果を有す
るものである。特性Ａの状態では制御ダイヤフラ
ム７に働く差圧がΔp1でその力f1は制御スプリン
グ９と釣合つてg1という弁４の開度を決める。こ
の状態から供給水圧の上昇があつても弁開度g1の
わずかな減少は、この部分での圧力降下の急増を
もたらすので水量Q1はほぼ一定に保たれる。
又、特性Ｂの状態に調節弁１７を設定した場合で
は差圧Δp2、力f2、弁開度g2の状態で安定し水量
はQ2を維持する。同様に特性Ｃに設定すると水
量はQ3となる。このように調節弁１７を水の主
通水路中に挿入してはいないのだが水量−差圧特
性を変化することが可能となり、その結果、水ガ
バナとして安定する水量値を調節弁１７の開度に
よつて変化させることができる。検出ダイヤフラ
ム２１には常に特性Ａの差圧が働いているので調
節弁１７の開度とは関係なく検出に必要な差圧Δ
Ｐsを生じる水量Ｑsで検出スイツチ２６を作動さ
せることが出来る。 Next, using the characteristic diagram in FIG. 2, the water flow control device 1
The water flow control operation will be explained. The differential pressure valve 11 of the differential pressure generator 13 has a hole in the center, and the water pressure difference caused by passing through this hole overcomes the differential pressure spring 12 and acts in the direction of opening the differential pressure valve. Therefore,
The pressure before and after the differential pressure generating section 13 is shown as A in FIG. Here, the inflection point that changes into a dogleg shape indicates a state where the differential pressure valve 11 begins to separate from the differential pressure hole 10. The detection diaphragm 21 includes
This differential pressure of characteristic A is acting. On the other hand, the control diaphragm 7 has a secondary chamber 8 in the first communication passage 14.
Since it also communicates with the primary chamber 6, the differential pressure value is smaller than in characteristic A in FIG. If the control valve 17 is closed, characteristic A will act, but if the opening degree is increased, the differential pressure value acting on the control diaphragm 7 will decrease as shown in characteristics B and C. Now, as is well known, the valve configuration shown in the figure has a governor effect that keeps the amount of water almost constant even if the water pressure increases. In the state of characteristic A, the differential pressure acting on the control diaphragm 7 is Δp 1 , and the force f 1 balances with the control spring 9 and determines the opening degree of the valve 4 called g 1 . Even if the supply water pressure increases from this state, a slight decrease in the valve opening degree g 1 causes a sudden increase in the pressure drop in this area, so the water amount Q 1 is kept almost constant.
Further, when the control valve 17 is set to the state of characteristic B, the state is stabilized with the differential pressure Δp 2 , the force f 2 , and the valve opening g 2 and the water amount maintains Q 2 . Similarly, if characteristic C is set, the water amount will be Q3 . In this way, although the control valve 17 is not inserted into the main water flow path, it is possible to change the water flow-differential pressure characteristics, and as a result, the water flow value that is stable as a water governor can be adjusted by opening the control valve 17. It can be changed depending on the degree. Since a differential pressure of characteristic A is always acting on the detection diaphragm 21, the differential pressure Δ required for detection is independent of the opening degree of the control valve 17.
The detection switch 26 can be actuated by the amount of water Q s that produces P s .
次に、水制御装置の他の実施例を第３図によつ
て説明する。同図は差圧発生部１３が異り他の部
分は第１図の実施例と同様なので同符号をつけ
た。一次室６から出る位置には、縮流部３９、低
圧部４０、拡大部４１からなるベンチユリー管に
よつて差圧発生部１３が形成されている。そし
て、第二連通路１６は低圧部４０と連絡してお
り、導通孔２３も低圧部４０と連絡している。こ
の実施例の場合、水量と差圧の関係は第４図のよ
うに２乗の曲線を示す。ここで曲線Ａは調節弁１
７を閉じた場合であつてベンチユリー管としての
特性そのものである。この差圧が調節弁１７の開
度によつて曲線Ｂ又は曲線Ｃのように変化する。
この結果、ガバナとして水量が安定する動作点は
Q1からQ2，Q3と変化させることができる。もち
ろん、第１図の場合と同様に検出ダイヤフラム２
１には曲線Ａが作用するので水量Ｑsで水量通過
を検出することができる。もし、検出ダイヤフラ
ム２１にも制御ダイヤフラム７と同じ水量−差圧
特性を作用させると、曲線Ｃのように設定して水
量Q3を得る場合は、図示したＱsの約３倍の水量
が流れてはじめて検出が可能となる。このことは
湯沸器として応用する場合には蛇口での開き方に
よつて火がついたり消えたりする現象を発生する
ことになつて不便なものである。 Next, another embodiment of the water control device will be described with reference to FIG. In this figure, the differential pressure generating section 13 is different, and the other parts are the same as the embodiment shown in FIG. 1, so the same reference numerals are given. At a position exiting from the primary chamber 6, a differential pressure generating section 13 is formed by a ventule tube consisting of a contracting section 39, a low pressure section 40, and an expanding section 41. The second communication passage 16 communicates with the low pressure section 40, and the conduction hole 23 also communicates with the low pressure section 40. In the case of this embodiment, the relationship between the amount of water and the differential pressure shows a square curve as shown in FIG. Here, curve A is control valve 1
7 is closed, and it has the same characteristics as a Venture tube. This differential pressure changes as shown by curve B or curve C depending on the opening degree of control valve 17.
As a result, the operating point at which the water flow becomes stable as a governor is
It can be changed from Q 1 to Q 2 to Q 3 . Of course, as in the case of Fig. 1, the detection diaphragm 2
Since the curve A acts on 1, it is possible to detect the passage of the water amount by the water amount Qs . If the detection diaphragm 21 is made to have the same water flow-differential pressure characteristics as the control diaphragm 7, and the water flow is set as shown in curve C to obtain the water flow Q3 , the water flow will be approximately three times the amount of water shown in the diagram Qs . Detection becomes possible only after This is inconvenient when used as a water heater, as the fire may turn on or off depending on how the faucet is opened.
以上述べたように本発明は、水の主通水路中で
なく連通路中に設けた水さな調節弁の操作で水量
設定を可変できるので操作力の低下と小型化が可
能となる。特に、実施例に示したように、自動的
に操作させる場合はモータ１９やその電源回路の
小容量化をも可能にする。又、水量検出には、設
定水量に無関係な水量−差圧特性を利用するので
一定水量になれば湯沸器を始動させることができ
る。更に、発生している差圧の中で最高の値を用
いているので検出ダイヤフラム２１の小径化も可
能となる。 As described above, according to the present invention, the water volume setting can be varied by operating the water receptacle control valve provided not in the main water flow path but in the communication path, thereby reducing operating force and making it possible to downsize. Particularly, as shown in the embodiment, when the motor 19 is operated automatically, it is possible to reduce the capacity of the motor 19 and its power supply circuit. Further, since the water amount detection uses the water amount-differential pressure characteristic that is unrelated to the set water amount, the water heater can be started when the water amount reaches a certain level. Furthermore, since the highest value among the differential pressures occurring is used, it is possible to reduce the diameter of the detection diaphragm 21.
第１図は本発明の一実施例の水制御装置の断面
図、第２図は同水制御装置の水量−差圧特性を含
む動作特性図、第３図は他の実施例を示す断面
図、第４図は第３図の実施例に於ける動作特性図
である。
７……制御ダイヤフラム、６……一次室、８…
…二次室、４……弁、１３……差圧発生部（１０
……差圧孔、１１……差圧弁、１２……差圧スプ
リング、３９……縮流部、４０……低圧部、４１
……拡大部）、１４……第一連通路、１６……第
二連通路、１７……調節弁、２１……検出ダイヤ
フラム、２０……駆動機構（１８……ギアボツク
ス、１９……モータ）。
Fig. 1 is a sectional view of a water control device according to an embodiment of the present invention, Fig. 2 is an operation characteristic diagram including water flow rate-differential pressure characteristics of the same water control device, and Fig. 3 is a sectional view showing another embodiment. , FIG. 4 is an operational characteristic diagram in the embodiment of FIG. 3. 7...Control diaphragm, 6...Primary chamber, 8...
...Secondary chamber, 4...Valve, 13...Differential pressure generating part (10
... Differential pressure hole, 11 ... Differential pressure valve, 12 ... Differential pressure spring, 39 ... Contraction part, 40 ... Low pressure part, 41
... enlarged part), 14 ... first communication passage, 16 ... second communication passage, 17 ... control valve, 21 ... detection diaphragm, 20 ... drive mechanism (18 ... gearbox, 19 ... motor) .
Claims (1)
画された一次室及び二次室と、制御ダイヤフラム
と連動し一次室へ流入する水量を制御する弁と、
一次室の下流に設けた差圧発生部と、一次室と二
次室を連通する第一連通路と、差圧発生部と二次
室を連通する第二連通路と、どちらか一方の連通
路に設けた調節弁と、一次室と差圧発生部の水圧
を受けて作動する検出ダイヤフラムとで構成さ
れ、調節弁開度によつて水量を制御すると共に水
量検出機能を併せ持つことを特徴とする水制御装
置。 ２ 調節弁は外部信号によつて作動する駆動機構
によつて、その開度が変えられることを特徴とす
る特許請求の範囲第１項記載の水制御装置。[Scope of Claims] 1. A control diaphragm, a primary chamber and a secondary chamber divided by the control diaphragm, and a valve that operates in conjunction with the control diaphragm to control the amount of water flowing into the primary chamber;
A differential pressure generation section provided downstream of the primary chamber, a first communication passageway that communicates the primary chamber and the secondary chamber, and a second communication passageway that communicates the differential pressure generation section and the secondary chamber. It consists of a control valve installed in the passage and a detection diaphragm that operates in response to the water pressure in the primary chamber and the differential pressure generating section, and is characterized by controlling the amount of water based on the opening degree of the control valve and also having a water amount detection function. water control device. 2. The water control device according to claim 1, wherein the opening degree of the control valve is changed by a drive mechanism operated by an external signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8225481A JPS57196039A (en) | 1981-05-28 | 1981-05-28 | Water controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8225481A JPS57196039A (en) | 1981-05-28 | 1981-05-28 | Water controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57196039A JPS57196039A (en) | 1982-12-01 |
| JPS6250730B2 true JPS6250730B2 (en) | 1987-10-27 |
Family
ID=13769301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8225481A Granted JPS57196039A (en) | 1981-05-28 | 1981-05-28 | Water controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57196039A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0259462U (en) * | 1988-10-21 | 1990-05-01 | ||
| JPH044393Y2 (en) * | 1987-04-10 | 1992-02-07 | ||
| JPH07506899A (en) * | 1992-02-28 | 1995-07-27 | ザ ダウ ケミカル カンパニー | Membrane fluid separation device |
-
1981
- 1981-05-28 JP JP8225481A patent/JPS57196039A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH044393Y2 (en) * | 1987-04-10 | 1992-02-07 | ||
| JPH0259462U (en) * | 1988-10-21 | 1990-05-01 | ||
| JPH07506899A (en) * | 1992-02-28 | 1995-07-27 | ザ ダウ ケミカル カンパニー | Membrane fluid separation device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57196039A (en) | 1982-12-01 |
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