JPH1163267A - Opening and closing device for constant flow quantity and automatic water faucet using it - Google Patents

Opening and closing device for constant flow quantity and automatic water faucet using it

Info

Publication number
JPH1163267A
JPH1163267A JP24222297A JP24222297A JPH1163267A JP H1163267 A JPH1163267 A JP H1163267A JP 24222297 A JP24222297 A JP 24222297A JP 24222297 A JP24222297 A JP 24222297A JP H1163267 A JPH1163267 A JP H1163267A
Authority
JP
Japan
Prior art keywords
valve
water
opening
mixed hot
flow path
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24222297A
Other languages
Japanese (ja)
Inventor
Tadahiro Honda
忠洋 本田
Hitoshi Nakao
仁 中尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toto Ltd
Original Assignee
Toto Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toto Ltd filed Critical Toto Ltd
Priority to JP24222297A priority Critical patent/JPH1163267A/en
Publication of JPH1163267A publication Critical patent/JPH1163267A/en
Pending legal-status Critical Current

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  • Domestic Plumbing Installations (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

PROBLEM TO BE SOLVED: To ensure a stable supply of fluid by disposing a constant flow valve upstream of an opening/closing valve, thereby keeping both functions of the valves. SOLUTION: A first constant flow valve 33 is disposed at a cold-hot water supply pipe 19 between a cold-hot water flow outlet 18 of a mixing valve 12 and a first solenoid-operated valve 30. Namely, the valve 33 is disposed at a primary side (upstream part) of the valve 30. Accordingly, since a sufficient pressure difference generates when a diaphragm serving as an opening/closing mechanism is operated, a sure operation of the valve 30 is attained and cold-hot water can be discharged from a water faucet 21 in a stable manner. A second constant flow valve 34 is disposed at a primary side (upstream part) of a second solenoid-operated valve 31 to ensure a sure operation of the valve 31 and to allow the cold-hot water into a wasing bowl from the faucet 21 in a stable manner. According to this constitution, with the cooperation of the opening/ closing valve 31 and the constant flow valve 33, sure and constant supply of fluid can be made.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、上流側圧力の変動
等にかかわらず流体を定量供給できる定量開閉装置及び
この定量開閉装置を使用した自動水栓に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed-quantity switching device capable of supplying a fixed amount of fluid regardless of fluctuations in upstream pressure and the like and an automatic faucet using the fixed-quantity switching device.

【0002】[0002]

【従来の技術】例えば、単一の吐水具を用いて、水と湯
を所定の割合で混合して生成された適温の混合湯水のみ
ならず、水も吐出することができる吐水装置として、図
5に示す形態の自動水栓Cがある。
2. Description of the Related Art For example, a water spouting device capable of discharging not only mixed hot and cold water produced by mixing water and hot water at a predetermined ratio by using a single water spout but also water has been proposed. There is an automatic faucet C of the form shown in FIG.

【0003】図示するように、温度調節器として用いら
れるミキシングバルブ50の水流入口51と湯流入口5
2には、それぞれ、給水配管53と給湯配管54が連通
連結されている。ミキシングバルブ50の混合湯水流出
口55は混合湯水供給配管56を介して吐水具57に連
通連結されている。給水配管53の分岐部58から給水
分岐配管59が分岐されており、給水分岐配管59の下
流側端は混合湯水供給配管56の合流部60に連通連結
されている。混合湯水供給配管56と給水分岐配管59
には、それぞれ、ダイアフラムを開閉機構として用いる
パイロット式の電磁開閉弁61、62が取付けられてい
る。即ち、電磁開閉弁61、62は、その上流側圧力
(一次側圧力)と下流側圧力(二次側圧力)の差圧に基
づいて弁の開閉動作を行うようにしている。
As shown in the drawing, a water inlet 51 and a hot water inlet 5 of a mixing valve 50 used as a temperature controller are provided.
2, a water supply pipe 53 and a hot water supply pipe 54 are connected to each other. The mixed hot water outlet 55 of the mixing valve 50 is connected to a water discharging device 57 via a mixed hot water supply pipe 56. A water supply branch pipe 59 is branched from a branch part 58 of the water supply pipe 53, and a downstream end of the water supply branch pipe 59 is connected to a junction 60 of the mixed hot water supply pipe 56. Mixed hot water supply pipe 56 and water supply branch pipe 59
, Pilot-type solenoid on-off valves 61 and 62 using a diaphragm as an opening / closing mechanism are respectively attached to the valves. That is, the solenoid on-off valves 61 and 62 open and close based on the differential pressure between the upstream pressure (primary pressure) and the downstream pressure (secondary pressure).

【0004】上記した構成によって、例えば、吐水具5
7が自動水栓の場合、図示しない使用モード切換スイッ
チを押して混合湯水モードを選択した後、使用者が手を
吐水具57の吐水口の前方かつ下方をなす位置に差し出
すと、センサが検出信号を制御装置に送り、制御装置か
らの駆動信号に基づいて電磁開閉弁61の開動作を行う
と、電磁開閉弁62は閉状態にあるので、ミキシングバ
ルブ50において給水配管53からの水と給湯配管54
からの湯が混合されて、所定温度に設定された混合湯水
が混合湯水供給配管56を通して吐水具57に供給さ
れ、その吐水口から吐水されることになる。
[0004] With the above-described configuration, for example, the spout 5
When the water faucet 7 is an automatic faucet, after selecting a mixed hot water mode by pressing a use mode changeover switch (not shown), when the user puts his hand at a position in front of and below the water discharge port of the water discharge tool 57, the sensor detects a detection signal. Is sent to the control device, and the electromagnetic on-off valve 61 is opened based on a drive signal from the control device. Since the electromagnetic on-off valve 62 is in the closed state, the water from the water supply pipe 53 and the hot water supply pipe are mixed in the mixing valve 50. 54
The mixed hot water is mixed, and the mixed hot water set at a predetermined temperature is supplied to the water discharging device 57 through the mixed hot water supply pipe 56, and discharged from the water discharging port.

【0005】また、水モードを選択した後、使用者が手
を吐水具57の吐水口の前方かつ下方をなす位置に差し
出すと、センサが検出信号を制御装置に送り、制御装置
からの駆動信号に基づいて電磁開閉弁62の開動作を行
うと、電磁開閉弁61は閉状態にあるので、給水配管5
3からの水が給水分岐配管59及び混合湯水供給配管5
6の下流側部分を通して吐水具57に供給され、その吐
水口から吐水されることになる。即ち、共通の吐水具5
7を用いて、混合湯水と水とを、それぞれ、独立して吐
水することができる。
After the user selects the water mode, when the user puts his hand in a position in front of and below the water outlet of the water discharging tool 57, the sensor sends a detection signal to the control device, and the driving signal from the control device is sent. When the opening and closing operation of the electromagnetic on-off valve 62 is performed on the basis of the above, the electromagnetic on-off valve 61 is in the closed state.
3 is supplied to the water supply branch pipe 59 and the mixed hot water supply pipe 5
The water is supplied to the water discharging device 57 through the downstream portion of the nozzle 6 and is discharged from the water discharging port. That is, the common spout 5
7, the mixed hot and cold water and the water can be spouted independently of each other.

【0006】[0006]

【発明が解決しようとする課題】しかし、上記した従来
の自動水栓Cは、未だ、以下の解決すべき課題を有して
いた。即ち、給水配管53と給湯配管54内の水圧が変
動すると、吐水具57より吐出される混合湯水又は水の
量も変動することになり好ましくない。そこで、定量吐
水を図るため、図5に仮想線で示すように、混合湯水供
給配管56の合流部60より下流側をなす二次側流路
に、吐水具57からの吐水を安定させるための定流量弁
63を取付けることが考えられる。なお、定流量弁63
を、混合湯水供給配管56の合流部60より下流側をな
す二次側流路に取付けるのは、混合湯水と水の吐出口が
共通しているので、1個取付ければよいことによる。
However, the above-mentioned conventional automatic faucet C still has the following problems to be solved. That is, if the water pressure in the water supply pipe 53 and the hot water supply pipe 54 fluctuates, the amount of mixed hot water or water discharged from the water discharger 57 also fluctuates, which is not preferable. Therefore, in order to stably discharge water from the water discharger 57, a secondary flow path downstream of the junction 60 of the mixed hot water supply pipe 56 is provided as shown by a virtual line in FIG. It is conceivable to attach the constant flow valve 63. The constant flow valve 63
Is attached to the secondary flow path downstream of the junction 60 of the mixed hot / cold water supply pipe 56 because the mixed hot / cold water and the water discharge port are common, so that only one is required.

【0007】しかし、前述したように、節電のため、電
磁開閉弁61、62は、同電磁開閉弁61、62の上流
側圧力と下流側圧力との差圧によって作動するダイアフ
ラムを開閉機構として用いているが、抵抗体となる定流
量弁63を混合湯水供給配管56の合流部60より下流
側をなす二次側流路に取付ける場合は、このような差圧
が得られなくなる。従って、電磁開閉弁61、62を確
実に作動させることができず、また、電磁開閉弁61、
62の確実な作動を前提とする定流量弁63もその機能
を発揮できず、吐水具57からの吐水の安定を図ること
ができなくなる。上記した課題は、自動水栓Cのみなら
ず、流体の一次側と二次側の差圧を利用して開閉動作を
行う開閉弁と、流体の定量制御を行う定流量弁が直列に
接続された各種形態の定量開閉装置においても共通する
課題であった。
However, as described above, in order to save power, the electromagnetic on-off valves 61 and 62 use a diaphragm operated by a differential pressure between the upstream pressure and the downstream pressure of the electromagnetic on-off valves 61 and 62 as an opening / closing mechanism. However, when the constant flow valve 63 serving as a resistor is attached to the secondary flow path downstream of the junction 60 of the mixed hot and cold water supply pipe 56, such a differential pressure cannot be obtained. Therefore, the electromagnetic on / off valves 61 and 62 cannot be reliably operated, and the electromagnetic on / off valves 61 and 62 cannot be operated.
The constant flow valve 63, which is premised on the reliable operation of the valve 62, cannot exhibit its function, so that the water discharge from the water discharger 57 cannot be stabilized. The above-described problem is caused not only by the automatic faucet C, but also by an on-off valve that performs an opening / closing operation using a differential pressure between the primary side and the secondary side of the fluid, and a constant flow valve that performs quantitative control of the fluid. This is also a common problem in various types of fixed opening and closing devices.

【0008】本発明は、このような事情に鑑みなされた
ものであり、定流量弁及び開閉弁の機能を共に確保し
て、安定状態に、流体を供給することができる定量開閉
装置を提供することを目的とする。本発明は、また、こ
のような定量開閉装置を用いて、適温混合湯水と水を選
択的に、かつ、安定状態に吐水することができる自動水
栓を提供することを目的とする。
The present invention has been made in view of such circumstances, and provides a fixed-quantity opening / closing device capable of securing a function of both a constant flow valve and an on-off valve and supplying a fluid in a stable state. The purpose is to: Another object of the present invention is to provide an automatic faucet that can selectively and stably discharge hot-mixed hot and cold water and water in a stable state using such a quantitative opening and closing device.

【0009】[0009]

【課題を解決するための手段】前記目的に沿う請求項1
記載の定量開閉装置は、流体の一次側と二次側の差圧を
利用して開閉動作を行う開閉弁と、前記流体の定量制御
を行う定流量弁が直列に接続された定量開閉装置であっ
て、前記定流量弁を、前記開閉弁の上流側に配置してい
る。請求項2記載の自動水栓は、水と湯をミキシングバ
ルブによって混合して所定温度の混合湯水を放出する混
合湯水流路と、該混合湯水流路をバイパスして前記水を
放出する水バイパス流路と、前記混合湯水流路から放出
される混合湯水と前記水バイパス流路からの水を切り換
えて放出する吐水具とを有する自動水栓において、前記
ミキシングバルブより下流側の前記混合湯水流路及び前
記水バイパス流路に、請求項1記載の定量開閉装置をそ
れぞれ使用している。
According to the present invention, there is provided a semiconductor device comprising:
The described quantitative switching device is a quantitative switching device in which a switching valve that performs an opening and closing operation using a differential pressure between the primary side and the secondary side of the fluid and a constant flow valve that performs quantitative control of the fluid are connected in series. The constant flow valve is disposed upstream of the on-off valve. 3. The automatic faucet according to claim 2, wherein the mixed hot and cold water is discharged by mixing the hot and cold water by a mixing valve, and a water bypass for discharging the water by bypassing the mixed hot and cold water flow passage. In a water faucet having a flow path and a water discharge device for switching and discharging mixed hot water discharged from the mixed hot water flow path and water from the water bypass flow path, the mixed hot water flow downstream of the mixing valve is provided. The fixed opening and closing device according to claim 1 is used for the passage and the water bypass passage, respectively.

【0010】請求項3記載の自動水栓は、請求項2記載
の自動水栓において、前記混合湯水流路に設けられてい
る前記定量開閉装置の第1の定流量弁の設定流量と、前
記水バイパス流路に設けられている前記定量開閉装置の
第2の定流量弁の設定流量が同じである。請求項4記載
の自動水栓は、請求項2記載の自動水栓において、前記
混合湯水流路に設けられている前記定量開閉装置の第1
の定流量弁の設定流量と、前記水バイパス流路に設けら
れている前記定量開閉装置の第2の定流量弁の設定流量
が異なる。請求項5記載の自動水栓は、請求項2〜4の
いずれか1項に記載の自動水栓において、前記混合湯水
流路に設けられている前記定量開閉装置の第1の開閉弁
と、前記水バイパス流路に設けられている前記定量開閉
装置の第2の開閉弁の切替えには、僅少の遅延時間が設
けられている。
According to a third aspect of the present invention, there is provided an automatic faucet according to the second aspect, wherein a set flow rate of a first constant flow valve of the fixed quantity opening / closing device provided in the mixed hot and cold water flow path, The set flow rate of the second constant flow valve of the fixed quantity switching device provided in the water bypass flow path is the same. The automatic faucet according to a fourth aspect is the automatic faucet according to the second aspect, wherein the first opening / closing device of the fixed quantity opening / closing device provided in the mixed hot / cold water flow path.
And the set flow rate of the second constant flow valve of the quantitative opening / closing device provided in the water bypass flow path is different. The automatic faucet according to claim 5, wherein the automatic faucet according to any one of claims 2 to 4, wherein the first opening / closing valve of the fixed quantity opening / closing device provided in the mixed hot and cold water flow path; The switching of the second on-off valve of the fixed-quantity on-off device provided in the water bypass passage has a small delay time.

【0011】[0011]

【発明の実施の形態】続いて、添付した図面を参照しつ
つ、本発明を具体化した実施の形態につき説明し、本発
明の理解に供する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

【0012】図1及び図2を参照して、本発明の一実施
の形態に係る自動水栓Aの構成について説明する。従っ
て、本実施の形態で取り扱われる流体は混合湯水及び水
となる。なお、自動水栓Aには、後述するように、定量
開閉装置が組み込まれている。図示するように、洗面ボ
ウルBを取付けたカウンター10の下方空間11には温
度調節器として好適に用いられるサーモスタット式のミ
キシングバルブ12が配設されている。ミキシングバル
ブ12は横長矩形の箱体構造を有しており、その中央部
に温度調節部13を具備すると共に、両端にそれぞれ水
流入口14と湯流入口15が設けられている。そして、
これらの水流入口14と湯流入口15には、それぞれ、
給水配管16と給湯配管17が連通連結されている。一
方、ミキシングバルブ12の上面の一側には温度調節部
13と連通連結する混合湯水流出口18が設けられてい
る。
Referring to FIGS. 1 and 2, the structure of an automatic faucet A according to an embodiment of the present invention will be described. Therefore, the fluids handled in the present embodiment are mixed hot water and water. The automatic faucet A incorporates a fixed-quantity opening / closing device as described later. As shown in the figure, a thermostatic mixing valve 12, which is suitably used as a temperature controller, is provided in a space 11 below a counter 10 to which a washbasin B is attached. The mixing valve 12 has a horizontally-long rectangular box structure, is provided with a temperature control unit 13 at the center thereof, and a water inlet 14 and a hot water inlet 15 are provided at both ends, respectively. And
These water inlet 14 and hot water inlet 15, respectively,
The water supply pipe 16 and the hot water supply pipe 17 are connected to each other. On the other hand, on one side of the upper surface of the mixing valve 12, there is provided a mixed hot water outlet 18 which is connected to the temperature control unit 13.

【0013】混合湯水流出口18には混合湯水流路の一
例である混合湯水供給配管19の上流側端(下端)が連
通連結されており、混合湯水供給配管19の下流側はカ
ウンター10に設けた開口20を通してカウンター10
の上面に立設されている吐水具の一例である水栓21に
連通連結されている。即ち、水栓21は、図1及び図2
に示すように、カウンター10上に固定載置される筒状
の水栓本体22と、基部が水栓本体22の頂部に取付け
られると共に先部に吐水口23を具備するU字管からな
る吐水管24と、水栓本体22内に配設され、洗面ボウ
ルBの前部に向けて指向軸を有する手感知センサ25と
を具備する。そして、混合湯水供給配管19の下流側端
(上端)は、図1に示すように、カウンター10に設け
た開口20を通して水栓本体22内を上方に向けて伸延
すると共に、吐水具取付ヘッド26を介して吐水管24
に連通連結されている。
An upstream end (lower end) of a mixed hot / cold water supply pipe 19 which is an example of a mixed hot / cold water flow path is connected to the mixed hot / cold water outlet 18, and a downstream side of the mixed hot / cold water supply pipe 19 is provided on the counter 10. Counter 10 through the opening 20
Is connected in communication with a faucet 21 which is an example of a water spouting tool provided upright on the upper surface. That is, the faucet 21 is provided in each of FIGS.
As shown in FIG. 3, a spout composed of a tubular faucet body 22 fixedly mounted on the counter 10 and a U-shaped tube having a base mounted on the top of the faucet body 22 and having a spout 23 at the front end. A water tube 24 and a hand-sensing sensor 25 disposed in the faucet main body 22 and having a directional axis toward the front of the basin B are provided. The downstream end (upper end) of the mixed hot / cold water supply pipe 19 extends upward in the faucet body 22 through an opening 20 provided in the counter 10 as shown in FIG. Through the spout 24
It is communicatively connected to.

【0014】図2及び図3に示すように、給水配管16
の分岐部27から水バイパス流路の一例である給水分岐
配管28が分岐されており、給水分岐配管28の下流側
端は混合湯水供給配管19の合流部29に連通連結され
ている。
As shown in FIG. 2 and FIG.
A water supply branch pipe 28, which is an example of a water bypass flow path, is branched from the branch section 27. The downstream end of the water supply branch pipe 28 is connected to a junction 29 of the mixed hot and cold water supply pipe 19.

【0015】図2に示すように、混合湯水供給配管19
と給水分岐配管28には、第1及び第2の開閉弁の一例
である第1及び第2の電磁開閉弁30、31が取付けら
れており、これらの電磁開閉弁30、31は、節電を図
るため、開閉機構として、第1及び第2の電磁開閉弁3
0、31の上流側圧力(一次側圧力)と下流側圧力(二
次側圧力)との差圧によって作動するダイアフラムを用
いている。
As shown in FIG. 2, a mixed hot and cold water supply pipe 19 is provided.
First and second solenoid on-off valves 30, 31 which are examples of first and second on-off valves are attached to the water supply branch pipe 28, and these on-off valves 30, 31 are used to save power. To achieve this, the first and second solenoid on-off valves 3
A diaphragm that operates by a differential pressure between the upstream pressure (primary pressure) and the downstream pressure (secondary pressure) of 0 and 31 is used.

【0016】また、本実施の形態では、図1及び図2に
示すように、水栓21から洗面ボウルBへの混合湯水又
は水の安定した吐出を図るため、ミキシングバルブ12
の混合湯水流出口18と第1の電磁開閉弁30との間を
なす混合湯水供給配管19の部分、及び、給水配管16
の分岐部27と第2の電磁開閉弁31との間をなす給水
分岐配管28の部分に、それぞれ、第1及び第2の定流
量弁33、34が取付けられている。ここで、第1及び
第2の定流量弁33、34は、それらの上流側の水圧が
変動した場合でも、水栓21から洗面ボウルBへ吐出さ
れる混合湯水又は水の吐水量を一定に保持するために用
いられるものである。なお、これらの第1及び第2の定
流量弁33、34として、市販の各種形態の定流量弁を
用いることができ、これら定流量弁の構造は周知なの
で、その構造の説明は省略する。また、本実施の形態で
は、直列に接続された、第1の定流量弁33と第1の電
磁開閉弁30の組み合わせ、及び、第2の定流量弁34
と第2の電磁開閉弁31の組み合わせによって、それぞ
れ、定量開閉装置が形成されることになる。
In this embodiment, as shown in FIGS. 1 and 2, the mixing valve 12 is used to stably discharge hot water or mixed water from the faucet 21 to the wash bowl B.
Of the mixed hot and cold water supply pipe 19 between the mixed hot and cold water outlet 18 and the first solenoid on-off valve 30, and the water supply pipe 16
First and second constant flow valves 33 and 34 are attached to a portion of a water supply branch pipe 28 between the branch portion 27 and the second electromagnetic on-off valve 31. Here, the first and second constant flow valves 33 and 34 maintain a constant discharge amount of the mixed hot water or water discharged from the faucet 21 to the wash basin B even when the upstream water pressure fluctuates. It is used for holding. It should be noted that various types of commercially available constant flow valves can be used as the first and second constant flow valves 33 and 34, and since the structures of these constant flow valves are well known, the description of the structures is omitted. In the present embodiment, a combination of the first constant flow valve 33 and the first solenoid on-off valve 30 and the second constant flow valve 34 connected in series
The combination of the second electromagnetic on-off valve 31 and the second electromagnetic on-off valve 31 respectively forms a fixed-quantity on-off device.

【0017】図示の実施の形態における自動水栓Aのそ
の他の構成について簡単に説明すると、図2及び図3に
示すように、ミキシングバルブ12の水流入口14と分
岐部27との間に逆止弁16aが取付けられている。従
って、ミキシングバルブ12から湯が給水配管16や給
水分岐配管28に逆流するのを確実に防止することがで
きる。また、カウンター10上には、基台35を介して
水栓21が載置されており、基台35の内部には、制御
基板からなる制御装置36が水密状態に内蔵されてい
る。制御装置36の上部には操作部37が配設されてお
り、操作部37は、吐水モード切換スイッチ38と、手
動吐水スイッチ39とを具備する。カウンター10の下
方空間11には、第1及び第2の電磁開閉弁30、31
を駆動するための電力や、手感知センサ25や制御装置
36に制御電力を供給するためのアダプター40が配設
されている。
Another configuration of the automatic faucet A in the illustrated embodiment will be briefly described. As shown in FIGS. 2 and 3, a non-return valve is provided between the water inlet 14 of the mixing valve 12 and the branch portion 27. A valve 16a is mounted. Therefore, it is possible to reliably prevent the hot water from flowing back from the mixing valve 12 to the water supply pipe 16 and the water supply branch pipe 28. Further, the faucet 21 is placed on the counter 10 via a base 35, and a control device 36 composed of a control board is built in the base 35 in a watertight state. An operation unit 37 is provided above the control device 36, and the operation unit 37 includes a water discharge mode changeover switch 38 and a manual water discharge switch 39. In a space 11 below the counter 10, first and second solenoid on-off valves 30, 31 are provided.
And an adapter 40 for supplying control power to the hand-sensing sensor 25 and the control device 36.

【0018】次に、上記した構成を有する自動水栓Aに
よる吐水動作について、上記した構成を模式的に示す図
3を参照しながら説明する。例えば、基台35上の吐水
モード切換スイッチ38を押して混合湯水モードを選択
した後、使用者が手を吐水管24の吐水口23の略直下
に差し出すと、手感知センサ25が検出信号を制御装置
36に送り、制御装置36からの駆動信号に基づいて第
1の電磁開閉弁30の開動作を行うと、第2の電磁開閉
弁31は閉状態にあるので、ミキシングバルブ12にお
いて給水配管16からの水と給湯配管17からの湯が混
合されて、所定温度に設定された混合湯水が混合湯水供
給配管19を通して水栓21に供給され、吐水管24の
吐水口23から洗面ボウルBに向けて吐水されることに
なる。
Next, the water discharging operation by the automatic faucet A having the above-described configuration will be described with reference to FIG. 3, which schematically shows the above-described configuration. For example, when the user presses the water discharge mode changeover switch 38 on the base 35 to select the mixed hot and cold water mode, and then the user puts his hand almost immediately below the water discharge port 23 of the water discharge pipe 24, the hand detection sensor 25 controls the detection signal. When the first electromagnetic on-off valve 30 is opened based on a drive signal from the control device 36, the second electromagnetic on-off valve 31 is in a closed state. Water from the hot water supply pipe 17 is mixed with the hot water from the hot water supply pipe 17, and the mixed hot water set at a predetermined temperature is supplied to the faucet 21 through the mixed hot water supply pipe 19, and is directed from the water discharge port 23 of the water discharge pipe 24 toward the wash bowl B. Water will be spouted.

【0019】この際、混合湯水供給配管19には第1の
定流量弁33が取付けられているので、給水配管16や
給湯配管17の圧力変動にかかわらず、一定の流量で、
混合湯水を水栓21から安定状態に吐出することができ
る。
At this time, since the first constant flow rate valve 33 is attached to the mixed hot and cold water supply pipe 19, a constant flow rate is maintained regardless of the pressure fluctuation of the water supply pipe 16 or the hot water supply pipe 17.
The mixed hot water can be discharged from the faucet 21 in a stable state.

【0020】また、本実施の形態では、前述したよう
に、第1の定流量弁33は、ミキシングバルブ12の混
合湯水流出口18と第1の電磁開閉弁30との間をなす
混合湯水供給配管19の部分に配設されている、即ち、
第1の電磁開閉弁30の一次側(上流側)に配設されて
いるため、開閉機構としてのダイアフラムを作動する場
合に十分な差圧が発生するので、第1の電磁開閉弁30
の確実な作動を確保でき、混合湯水を安定状態に水栓2
1から吐水することができる。
In the present embodiment, as described above, the first constant flow valve 33 is used to supply the mixed hot and cold water between the mixed hot and cold outlet 18 of the mixing valve 12 and the first solenoid valve 30. It is arranged in the portion of the pipe 19, that is,
Since the first electromagnetic switching valve 30 is disposed on the primary side (upstream side) of the first electromagnetic switching valve 30, a sufficient differential pressure is generated when the diaphragm as the opening and closing mechanism is operated.
Operation can be assured, and the mixed hot and cold water is kept in a stable state.
Water can be spouted from one.

【0021】また、基台35上の吐水モード切換スイッ
チ38を押して水モードを選択した後、使用者が手を吐
水管24の吐水口23の略直下に差し出すと、手感知セ
ンサ25が検出信号を制御装置36に送り、制御装置3
6からの駆動信号に基づいて第2の電磁開閉弁31の開
動作を行うと、第1の電磁開閉弁30は閉状態にあるの
で、給水配管16からの水が給水分岐配管28及び混合
湯水供給配管19の下流側部分を通して水栓21に供給
され、吐水管24の吐水口23から吐水されることにな
る。この際も、前述したように、第2の定流量弁34
が、給水配管16の分岐部27と第2の電磁開閉弁31
との間をなす給水分岐配管28の部分に配設されてい
る、即ち、第2の電磁開閉弁31の一次側(上流側)に
配設されているため、開閉機構としてのダイアフラムを
作動する場合に十分な差圧が発生するので、第2の電磁
開閉弁31の確実な作動を確保でき、水を安定状態に水
栓21から洗面ボウルB内に吐水することができる。
Further, after the water mode is selected by pressing the water discharge mode changeover switch 38 on the base 35, when the user puts his hand almost immediately below the water discharge port 23 of the water discharge pipe 24, the hand detection sensor 25 detects the detection signal. To the control device 36, and the control device 3
When the opening operation of the second electromagnetic on-off valve 31 is performed based on the driving signal from the first electromagnetic on-off valve 6, the first electromagnetic on-off valve 30 is in the closed state. The water is supplied to the faucet 21 through the downstream portion of the supply pipe 19, and is discharged from the water discharge port 23 of the water discharge pipe 24. Also at this time, as described above, the second constant flow valve 34
Is the branch portion 27 of the water supply pipe 16 and the second solenoid on-off valve 31
Is disposed at a portion of the water supply branch pipe 28 between the first and second electromagnetic switching valves 31, that is, disposed on the primary side (upstream side) of the second solenoid on-off valve 31, so that a diaphragm as an opening and closing mechanism is operated. In this case, since a sufficient differential pressure is generated, the reliable operation of the second electromagnetic on-off valve 31 can be ensured, and water can be discharged from the faucet 21 into the wash basin B in a stable state.

【0022】また、本実施の形態において、第1及び第
2の定流量弁33、34は、通常は吐水管24の吐水口
23から同一流量を吐水することができるように、同一
設定流量のものを用いるが、異なる設定流量のものを用
いることもできる。例えば、病室等において、本実施の
形態に係る自動水栓Aを用いて、混合湯水でなく水の吐
水が必要となる一例として水差しに水を入れる場合が考
えられるが、この場合、比較的大量に吐水できれば、速
く注水を行うことができる。一方、同じ自動水栓Aを用
いて、混合湯水によって手を洗う場合には、比較的少量
で足りると考えられる。このような要望は、第1の定流
量弁33の設定流量を少量とする一方で、第2の定流量
弁34の設定流量を大量とすることによって、容易に対
処することができる。
In the present embodiment, the first and second constant flow valves 33 and 34 usually have the same set flow rate so that the same flow rate can be discharged from the water discharge port 23 of the water discharge pipe 24. Although one using a different flow rate can be used. For example, in a hospital room or the like, it is conceivable to use the automatic faucet A according to the present embodiment to add water to a jug as an example in which water is required to be spouted instead of mixed hot and cold water. If water can be spouted, water can be injected quickly. On the other hand, when washing hands with mixed hot water using the same automatic faucet A, it is considered that a relatively small amount is sufficient. Such a demand can be easily dealt with by reducing the set flow rate of the first constant flow valve 33 and increasing the set flow rate of the second constant flow valve 34.

【0023】また、自動水栓Aにおいて、混合湯水の吐
水中に吐水モードを水モードに切り替えるに際して、図
4に示すように、第1の電磁開閉弁30の閉動作と、第
2の電磁開閉弁31の開動作を同時に行うと、仮想線で
示すように、水栓21からの吐水流量が所定時間、設定
吐水量を大幅に超えることになり、定量吐水ができなく
なる。そこで、第1の電磁開閉弁30の閉動作と、第2
の電磁開閉弁31の開動作との間に僅少な遅延時間(例
えば、0.1〜2.0秒)を設けることによって、実線
で示すように、吐水流量が設定吐水量を超えるのを確実
に防止することができる。
In the automatic faucet A, when the water discharge mode is switched to the water mode during the discharge of the mixed hot and cold water, as shown in FIG. When the opening operation of the valve 31 is performed at the same time, as shown by the phantom line, the water discharge flow rate from the faucet 21 greatly exceeds the set water discharge amount for a predetermined period of time, and it becomes impossible to perform constant water discharge. Therefore, the closing operation of the first solenoid on-off valve 30 and the second
By providing a slight delay time (for example, 0.1 to 2.0 seconds) between the opening operation of the electromagnetic on-off valve 31 and the opening operation of the electromagnetic on-off valve 31, it is ensured that the water discharge flow rate exceeds the set water discharge amount as shown by the solid line. Can be prevented.

【0024】以上、本発明を、幾つかの実施の形態を参
照して説明してきたが、本発明は何ら上記した実施の形
態に記載の構成に限定されるものではなく、特許請求の
範囲に記載されている事項の範囲内で考えられるその他
の実施の形態や変形例も含むものである。
As described above, the present invention has been described with reference to some embodiments. However, the present invention is not limited to the configurations described in the above-described embodiments, and claims are not limited thereto. This also includes other embodiments and modifications that can be considered within the scope of the described matters.

【0025】[0025]

【発明の効果】請求項1記載の定量開閉装置において
は、流体の一次側と二次側の差圧を利用して開閉動作を
行う開閉弁の上流側に定流量弁を配置したので、開閉弁
の一次側と二次側との間に十分な差圧を生じさせること
ができ、この差圧に基づいて確実に開閉弁の開閉動作を
行うことができるので、定流量弁と協働して流体を確実
に定量供給することができる。請求項2〜5記載の自動
水栓においては、水と湯を混合して所定温度の混合湯水
を放出するミキシングバルブより下流側の混合湯水流路
及び水バイパス流路に請求項1記載の定量開閉装置を取
付けたので、混合湯水流路と水バイパス流路のいずれに
おいても定流量弁と開閉弁の作動を共に確実に行うこと
ができ、混合湯水、水のいずれも共通の吐水具から安定
状態に吐水することができる。請求項3記載の自動水栓
においては、第1及び第2の定流量弁の設定流量を同一
とすることによって、混合湯水吐水モード又は水吐水モ
ード如何にかかわらず、同一流量の混合湯水又は水を吐
水することができる。請求項4記載の自動水栓において
は、第1及び第2の定流量弁の設定流量を異ならせてい
る。従って、例えば、病室等において、水差しに水を入
れる場合は第2の定流量弁の設定流量を大量とすること
によって速やかに水を注水できると共に、第1の定流量
弁の設定流量を少量とすることによって、少量の混合湯
水で手洗いを行うことができる。請求項5記載の自動水
栓においては、第1及び第2の開閉弁の開閉起動信号に
遅延時間をもたせたので、吐水モードを切り替える際
に、吐水流量が設定吐水量を超えるのを確実に防止する
ことができる。
According to the first aspect of the present invention, the constant flow rate valve is disposed upstream of the on-off valve which performs the on-off operation by utilizing the pressure difference between the primary side and the secondary side of the fluid. A sufficient differential pressure can be generated between the primary side and the secondary side of the valve, and the on-off valve can be reliably opened and closed based on this differential pressure. As a result, a constant amount of fluid can be supplied. In the automatic faucet according to any one of claims 2 to 5, the mixed hot water flow path and the water bypass flow path downstream of the mixing valve that mixes water and hot water and discharges the mixed hot water at a predetermined temperature. The opening and closing device allows the constant flow valve and the on-off valve to operate reliably in both the mixed hot water flow path and the water bypass flow path, and both the mixed hot water and water are stable from the common spout Water can be spouted to the state. In the automatic faucet according to claim 3, by setting the set flow rates of the first and second constant flow valves to be the same, regardless of the mixed hot and cold water spouting mode or the water spouting mode, the same flow rate of mixed hot or cold water or water is used. Can be spouted. In the automatic faucet according to the fourth aspect, the set flow rates of the first and second constant flow valves are made different. Therefore, for example, in a hospital room or the like, when pouring water into a jug, water can be quickly injected by increasing the set flow rate of the second constant flow valve, and the set flow rate of the first constant flow valve is reduced to a small amount. By doing so, hand washing can be performed with a small amount of mixed hot and cold water. In the automatic faucet according to the fifth aspect, since the opening and closing activation signals of the first and second on-off valves have a delay time, when switching the water discharge mode, it is ensured that the water discharge flow rate exceeds the set water discharge amount. Can be prevented.

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

【図1】本発明の一実施の形態に係る自動水栓の全体構
成を示す側断面図である。
FIG. 1 is a side sectional view showing an entire configuration of an automatic faucet according to an embodiment of the present invention.

【図2】同部分正断面図である。FIG. 2 is a front sectional view of the same part.

【図3】同ブロック図である。FIG. 3 is a block diagram of the same.

【図4】吐水モード切換時の吐水流量の変化を示すグラ
フである。
FIG. 4 is a graph showing a change in a water discharge flow rate when a water discharge mode is switched.

【図5】従来の自動水栓の全体構成を示すブロック図で
ある。
FIG. 5 is a block diagram showing the entire configuration of a conventional automatic faucet.

【符号の説明】[Explanation of symbols]

A 自動水栓 B 洗面ボウル 10 カウンター 11 下方空間 12 ミキシングバルブ 13 温度調節
部 14 水流入口 15 湯流入口 16 給水配管 16a 逆止弁 17 給湯配管 18 混合湯水
流出口 19 混合湯水供給配管(混合湯水流路) 20 開口 21 水栓(吐
水具) 22 水栓本体 23 吐水口 24 吐水管 25 手感知セ
ンサ 26 吐水具取付ヘッド 27 分岐部 28 給水分岐配管(水バイパス流路) 29 合流部 30 第1の電磁開閉弁(第1の開閉弁) 31 第2の電磁開閉弁(第2の開閉弁) 33 第1の定流量弁 34 第2の定
流量弁 35 基台 36 制御装置 37 操作部 38 吐水モー
ド切換スイッチ 39 手動吐水スイッチ 40 アダプタ
DESCRIPTION OF SYMBOLS A Automatic water tap B Washing bowl 10 Counter 11 Lower space 12 Mixing valve 13 Temperature controller 14 Water inlet 15 Hot water inlet 16 Water supply pipe 16a Check valve 17 Hot water supply pipe 18 Mixed hot water supply outlet 19 Mixed hot water supply pipe (mixed hot water flow) 20) opening 21 faucet (water spout) 22 faucet main body 23 spout 24 water spout pipe 25 hand sensor 26 water spout mounting head 27 branch part 28 water supply branch pipe (water bypass flow path) 29 junction part 30 first Electromagnetic on-off valve (first on-off valve) 31 Second electromagnetic on-off valve (second on-off valve) 33 First constant flow valve 34 Second constant flow valve 35 Base 36 Control device 37 Operation unit 38 Water discharge mode Changeover switch 39 Manual water discharge switch 40 Adapter

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 流体の一次側と二次側の差圧を利用して
開閉動作を行う開閉弁と、前記流体の定量制御を行う定
流量弁が直列に接続された定量開閉装置であって、 前記定流量弁を、前記開閉弁の上流側に配置したことを
特徴とする定量開閉装置。
1. A quantitative opening / closing device in which an on / off valve for performing an opening / closing operation using a differential pressure between a primary side and a secondary side of a fluid and a constant flow valve for performing a quantitative control of the fluid are connected in series. A constant flow opening / closing device, wherein the constant flow valve is disposed upstream of the opening / closing valve.
【請求項2】 水と湯をミキシングバルブによって混合
して所定温度の混合湯水を放出する混合湯水流路と、該
混合湯水流路をバイパスして前記水を放出する水バイパ
ス流路と、前記混合湯水流路から放出される混合湯水と
前記水バイパス流路からの水を切り換えて放出する吐水
具とを有する自動水栓において、 前記ミキシングバルブより下流側の前記混合湯水流路及
び前記水バイパス流路に、請求項1記載の定量開閉装置
をそれぞれ使用したことを特徴とする自動水栓。
2. A mixed hot and cold water flow path for mixing water and hot water by a mixing valve to release mixed hot and cold water at a predetermined temperature; a water bypass flow path for bypassing the mixed hot and cold water flow path to discharge the water; In an automatic faucet having a mixed hot and cold water discharged from a mixed hot and cold water flow path and a water discharger for switching and discharging water from the water bypass flow path, the mixed hot and cold water flow path downstream of the mixing valve and the water bypass An automatic faucet, wherein each of the flow passages uses the fixed-quantity switching device according to claim 1.
【請求項3】 前記混合湯水流路に設けられている前記
定量開閉装置の第1の定流量弁の設定流量と、前記水バ
イパス流路に設けられている前記定量開閉装置の第2の
定流量弁の設定流量が同じである請求項2記載の自動水
栓。
3. A set flow rate of a first constant flow valve of the fixed quantity opening / closing device provided in the mixed hot / cold water flow path, and a second constant flow rate of the fixed quantity opening / closing apparatus provided in the water bypass flow path. 3. The automatic faucet according to claim 2, wherein the set flow rates of the flow valves are the same.
【請求項4】 前記混合湯水流路に設けられている前記
定量開閉装置の第1の定流量弁の設定流量と、前記水バ
イパス流路に設けられている前記定量開閉装置の第2の
定流量弁の設定流量が異なる請求項2記載の自動水栓。
4. A set flow rate of a first constant flow valve of the fixed quantity switching device provided in the mixed hot and cold water flow path, and a second constant flow rate of the fixed quantity switching apparatus provided in the water bypass flow path. 3. The automatic faucet according to claim 2, wherein the set flow rates of the flow valves are different.
【請求項5】 前記混合湯水流路に設けられている前記
定量開閉装置の第1の開閉弁と、前記水バイパス流路に
設けられている前記定量開閉装置の第2の開閉弁の切替
えには、僅少の遅延時間が設けられている請求項2〜4
のいずれか1項に記載の自動水栓。
5. A method for switching between a first opening / closing valve of the fixed quantity opening / closing device provided in the mixed hot / cold water channel and a second opening / closing valve of the fixed quantity opening / closing device provided in the water bypass flow path. Are provided with a small delay time.
The automatic faucet according to any one of the above items.
JP24222297A 1997-08-22 1997-08-22 Opening and closing device for constant flow quantity and automatic water faucet using it Pending JPH1163267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24222297A JPH1163267A (en) 1997-08-22 1997-08-22 Opening and closing device for constant flow quantity and automatic water faucet using it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24222297A JPH1163267A (en) 1997-08-22 1997-08-22 Opening and closing device for constant flow quantity and automatic water faucet using it

Publications (1)

Publication Number Publication Date
JPH1163267A true JPH1163267A (en) 1999-03-05

Family

ID=17086058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24222297A Pending JPH1163267A (en) 1997-08-22 1997-08-22 Opening and closing device for constant flow quantity and automatic water faucet using it

Country Status (1)

Country Link
JP (1) JPH1163267A (en)

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