JP4986767B2 - Original water heater - Google Patents

Original water heater Download PDF

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JP4986767B2
JP4986767B2 JP2007210377A JP2007210377A JP4986767B2 JP 4986767 B2 JP4986767 B2 JP 4986767B2 JP 2007210377 A JP2007210377 A JP 2007210377A JP 2007210377 A JP2007210377 A JP 2007210377A JP 4986767 B2 JP4986767 B2 JP 4986767B2
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water
pipe
aspirator
water heater
faucet
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JP2009041888A (en
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智幸 井田
誠 早乙女
敏行 河原
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Lixil Corp
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Description

本発明は、元止め式電気温水器に関するものである。   The present invention relates to a stop-type electric water heater.

従来、湯沸かしタンクの上流側で流路を閉鎖できる元止め式の温水器として、例えば特許文献1に開示されているような構造のものが存在し、特許文献1に開示されている元止め式電気温水器においては、吐水後の出湯管内の水位を下げることで、膨張水による水位上昇を補うとともに、時間経過後の再吐水時に冷水が出ないようにしている。
即ち、図5に示すように、湯沸かしタンク2と自動水栓9とをつなぐ出湯管路8にアスピレーター6が設けられ、このアスピレーター6から分岐した分岐管路18は排水管20に接続されており、自動水栓9の吐水口9aから吐水させた後に出湯管路8内の水位Pを下げることで、アスピレーター6から自動水栓9に至る立上管8a内が空の状態となるようにしている。
特許第3764591号公報
2. Description of the Related Art Conventionally, as a primary water heater capable of closing a flow path on the upstream side of a water heater tank, for example, there is a structure as disclosed in Patent Document 1, and the primary water heater disclosed in Patent Document 1 In the electric water heater, the water level in the tapping pipe after water discharge is lowered to compensate for the rise in water level due to the expanded water, and cold water is prevented from being discharged at the time of re-water discharge after the passage of time.
That is, as shown in FIG. 5, an aspirator 6 is provided in a hot water discharge pipe 8 connecting the water heater tank 2 and the automatic faucet 9, and a branch pipe 18 branched from the aspirator 6 is connected to a drain pipe 20. The water level P in the hot water discharge pipe 8 is lowered after the water is discharged from the water outlet 9a of the automatic water tap 9, so that the inside of the riser pipe 8a from the aspirator 6 to the automatic water tap 9 becomes empty. Yes.
Japanese Patent No. 3765591

このような元止め式の電気温水器において、吐水口9aには細かい網目のフィルター等が設けられているため表面張力が作用し、吐水後に、下向きの吐水口9a内に残水Wが残されることとなる。
この状態で、湯沸かしタンク2内で湯の沸き上げが開始されると、図6に示すように、膨張水により水位Pが少し上昇されることとなり、この水位Pの上昇により、立上管8a内の空気が押圧され、これにより吐水口9a内に残されている残水Wが押し出されて、自動水栓の吐水口9aからポタポタと水滴が漏れ出し、あたかも自動水栓9が止水不良であるような感じを与えてしまうという問題点があった。
In such a front-stop type electric water heater, the water outlet 9a is provided with a fine mesh filter or the like, so that surface tension acts, and after the water discharge, residual water W is left in the downward water outlet 9a. It will be.
In this state, when boiling of hot water is started in the hot water tank 2, the water level P is slightly raised by the expanded water as shown in FIG. The inside air is pressed, and the remaining water W remaining in the water outlet 9a is pushed out, so that the tap water and water droplets leak from the water outlet 9a of the automatic water faucet, as if the automatic water faucet 9 is poorly stopped. There was a problem of giving a feeling like that.

本発明は上記従来の問題点に鑑み案出したものであって、湯沸かしタンク内での湯の沸き上げ時に、水栓からのポタ漏れを無くすことのできる元止め式電気温水器を提供することを目的とする。   The present invention has been devised in view of the above-described conventional problems, and provides a non-stop type electric water heater that can eliminate leakage of potter from a faucet when boiling water in a water heater tank. With the goal.

本発明は上記目的を達成するために以下の手段を採った。   The present invention employs the following means to achieve the above object.

本発明は、湯沸かしタンクと水栓とをつなぐ出湯管路にアスピレーターを設け、該アスピレーターから分岐した分岐管路を排水管に接続してなる元止め式電気温水器において、前記水栓とアスピレーターとの間に、水栓側からの水の逆流を防ぐ逆止弁を設けたことを要旨とする。   The present invention provides an electric water heater having a stop, which is provided with an aspirator provided in a hot water discharge pipe connecting a kettle tank and a faucet, and a branch pipe branched from the aspirator is connected to a drain pipe. The gist is that a check valve for preventing the backflow of water from the faucet side is provided between the two.

水栓とアスピレーターとの間に、水栓側からの水の逆流を防ぐ逆止弁を設けたことにより、吐水後に、逆止弁により水位が下がらないために、水栓とアスピレーターとの間の管路内は水が充満された状態に維持され、アスピレーターに上方からの水のヘッド圧がかかることとなり、この状態で、湯沸かしタンク内で湯の沸き上げが行われると、ヘッド圧がアスピレーターにかかっているために、膨張水は、低圧側の分岐管路を通り排水管側に流れて排水されることとなり、水栓の吐水口からポタポタと水が漏れ出すことがない。   By providing a check valve between the faucet and the aspirator to prevent backflow of water from the faucet side, the water level does not drop by the check valve after water discharge. The inside of the pipe line is maintained in a state of being filled with water, and the head pressure of water from above is applied to the aspirator. In this state, when hot water is boiled in the water heater tank, the head pressure is applied to the aspirator. Therefore, the expansion water flows through the low pressure side branch pipe to the drain pipe side and is drained, so that the potter and water do not leak out from the faucet spout.

また、水栓とアスピレーターとの間に逆止弁を設けた構成の元止め式電気温水器において、分岐管路に、排水管側からの空気の侵入を防ぐ逆止弁を設けて構成することもできる。
このように構成すれば、たとえアスピレーターと水栓間の管路が太い場合であっても、分岐管路を通り排水管側から空気がアスピレーターと水栓間の管路内に入ることがなく、水栓とアスピレーターとの間の管路内は水が充満された状態に維持され、アスピレーターにはヘッド圧がかかるために、湯沸かしタンク内で湯の沸き上げが行われると、排水管側に膨張水が流れて、水栓からポタポタと水滴が漏れることがない。
In addition, in a non-stop type electric water heater having a check valve provided between a faucet and an aspirator, a check valve that prevents intrusion of air from the drain pipe side is provided in the branch pipe. You can also.
If constituted in this way, even if the pipe line between the aspirator and the faucet is thick, air does not enter the pipe line between the aspirator and the faucet through the branch pipe from the drain pipe side. The pipe line between the faucet and the aspirator is maintained in a state of being filled with water, and the head pressure is applied to the aspirator, so when hot water is heated in the hot water tank, it expands to the drain pipe side. Water will not flow and the tap will not leak from the faucet.

次に、本発明を実施するための最良の形態を実施例を用いて説明する。
図1は、元止め式電気温水器の概略配置構成図である。
自動水栓9が取り付けられている洗面器21の下方のキャビネット内部に設置される電気温水器本体1内には、湯沸かしタンク2と、電磁弁3と、基板4と、温調弁5と、アスピレーター6と、逆止弁7が設けられている。
湯沸かしタンク2は、内部にヒーター2aを備えており、ヒーター2aにより内部で湯が生成されて貯えられるものである。
湯沸かしタンク2の側面には、湯の沸き上げ温度が80〜85℃程度となるように調整する温調バイメタル15と、高温となった時に自動的にヒーター2aへの通電を遮断できる過昇バイメタル16が設けられており、過昇バイメタル16にはスイッチ17が接続されている。
Next, the best mode for carrying out the present invention will be described using examples.
FIG. 1 is a schematic arrangement configuration diagram of a main-stop electric water heater.
In the electric water heater main body 1 installed inside the cabinet below the basin 21 to which the automatic faucet 9 is attached, a water heater tank 2, an electromagnetic valve 3, a substrate 4, a temperature control valve 5, An aspirator 6 and a check valve 7 are provided.
The water heater tank 2 includes a heater 2a inside, and hot water is generated and stored therein by the heater 2a.
On the side of the water heater tank 2 is a temperature-controlled bimetal 15 that adjusts the boiling temperature of the hot water to be about 80 to 85 ° C., and an overheated bimetal that can automatically cut off the power to the heater 2a when the temperature becomes high. 16 is provided, and a switch 17 is connected to the overheating bimetal 16.

また、電磁弁3は給水管11内に設けられており、給水管11には、元栓12を通り定流量弁13を介して水道管からの水が供給されるように構成されている。
電磁弁3は、洗面器21上に立設状に設置した自動水栓9のセンサー10が人の手を検知した時に開かれるものであり、基板4により開閉制御されるものである。
この電磁弁3の下流側で第1枝管14aと第2枝管14bに分岐されており、第1枝管14aは湯沸かしタンク2の底面に接続されて湯沸かしタンク2内に給水できるものであり、また、第2枝管14bは、湯沸かしタンク2の出口側の出湯管路8に設けられた温調弁5に接続されている。
The electromagnetic valve 3 is provided in the water supply pipe 11, and the water supply pipe 11 is configured to be supplied with water from the water pipe through the main plug 12 and the constant flow valve 13.
The electromagnetic valve 3 is opened when the sensor 10 of the automatic faucet 9 installed upright on the wash basin 21 detects a human hand, and is opened and closed by the substrate 4.
The first branch pipe 14 a and the second branch pipe 14 b are branched downstream of the electromagnetic valve 3, and the first branch pipe 14 a is connected to the bottom surface of the water heater tank 2 and can supply water into the water heater tank 2. Further, the second branch pipe 14 b is connected to the temperature control valve 5 provided in the hot water outlet pipe line 8 on the outlet side of the hot water tank 2.

この温調弁5では、湯沸かしタンク2内からの湯と、第2枝管14bから供給される水を混合して、36〜38℃の適温のお湯に調整することができるものである。
出湯管路8内の温調弁5の下流側に、アスピレーター6と、更にその下流側に逆止弁7が設けられ、この逆止弁7の下流側で、出湯管路8の一部が上方へ立ち上げられた立上管8aが形成されており、立上管8aの上端に自動水栓9が接続されている。なお、前記立上管8aは、逆止弁7の下流側に継手22を設けて接続した構成であっても良い。
In this temperature control valve 5, the hot water from the hot water tank 2 and the water supplied from the 2nd branch pipe 14b are mixed, and it can adjust to the hot water of 36-38 degreeC suitable temperature.
An aspirator 6 is provided on the downstream side of the temperature control valve 5 in the hot water discharge pipe 8, and a check valve 7 is further provided on the downstream side thereof. A part of the hot water discharge pipe 8 is formed on the downstream side of the check valve 7. A rising pipe 8a raised upward is formed, and an automatic faucet 9 is connected to the upper end of the rising pipe 8a. The riser pipe 8a may have a configuration in which a joint 22 is provided on the downstream side of the check valve 7 for connection.

また、アスピレーター6から分岐して分岐管路18が設けられており、この分岐管路18は図2の概略図で示すように、内部にトラップ19aを有する排水器具19を介して排水管20に接続されている。   Further, a branch pipe 18 is provided by branching from the aspirator 6, and this branch pipe 18 is connected to the drain pipe 20 via a drainage device 19 having a trap 19 a inside as shown in the schematic diagram of FIG. 2. It is connected.

次に、元止め式電気温水器の動作を説明する。
自動水栓9の吐水口9aの下方に手を差し入れると、センサー10で手が検知され、このセンサー10の検知信号が基板4に伝えられて、基板4からの信号で電磁弁3が開かれる。これにより、湯沸かしタンク2内に貯えられている湯が出湯管路8を通り、温調弁5で適温に調整されて、アスピレーター,逆止弁7を通り立上管8aを上昇して自動水栓9の吐水口9aから吐水されるものである。
吐水口9aから手が離れると、電磁弁3が閉じられて吐水口9aからの吐水が停止されるが、この状態で、逆止弁7が設けられているため、自動水栓9内の水および立上管8a内の水は上流側へ戻ることがなく、立上管8aおよび自動水栓9内に水が満たされたままの状態となる。
なお、吐水口9aには、細かい網目のフィルター、あるいは泡沫水生成用の網体が設けられており、細かい網目であるため表面張力が強く作用し、吐水口9aが下向きであっても、水は外側へ落下しないものである。
Next, the operation of the former stop type electric water heater will be described.
When a hand is inserted below the spout 9 a of the automatic faucet 9, the hand is detected by the sensor 10, and the detection signal of this sensor 10 is transmitted to the substrate 4, and the electromagnetic valve 3 is opened by the signal from the substrate 4. It is. As a result, the hot water stored in the water heater tank 2 passes through the hot water outlet pipe 8, is adjusted to an appropriate temperature by the temperature control valve 5, passes through the aspirator and check valve 7, rises up the riser pipe 8 a, and is automatically watered. Water is discharged from the water outlet 9 a of the stopper 9.
When the hand leaves the spout 9a, the solenoid valve 3 is closed and the spout from the spout 9a is stopped. In this state, since the check valve 7 is provided, the water in the automatic faucet 9 And the water in the riser pipe 8a does not return to the upstream side, and the riser pipe 8a and the automatic faucet 9 remain filled with water.
The water outlet 9a is provided with a fine mesh filter or a foam body for generating foamed water. Since the mesh is fine, the surface tension acts strongly, and even if the water outlet 9a faces downward, Does not fall outward.

このような状態において、アスピレーター6には、立上管8aおよび自動水栓9内に満たされている残水によるヘッド圧がかかっているために、湯沸かしタンク2内で湯を沸き上げる時に、図3に示すように、湯沸かしタンク2からの膨張水は、低圧側の分岐管路18を通り排水管20に排水されることとなる。
従って、湯沸かしタンク2で湯を沸き上げた時にも、従来のように残水が吐水口9aからポタポタと漏れ出すことはない。
In such a state, since the head pressure is applied to the aspirator 6 due to the residual water filled in the riser pipe 8a and the automatic faucet 9, when the hot water is boiled in the hot water tank 2, As shown in FIG. 3, the expanded water from the kettle tank 2 passes through the low pressure side branch pipe 18 and is drained to the drain pipe 20.
Accordingly, even when hot water is boiled in the hot water tank 2, residual water does not leak out from the water outlet 9a as in the conventional case.

このように本発明の元止め式電気温水器では、自動水栓9とアスピレーター6との間に、自動水栓9側からの水の逆流を防ぐ逆止弁7を設けたことで水位が下がらず、アスピレーター6にヘッド圧をかけることができ、これにより湯沸しタンク2で沸き上げが行われると排水管20側に膨張水を良好に流すことができ、吐水口9aからのポタ漏れを無くすことができるものである。   As described above, in the main stop electric water heater of the present invention, the water level is lowered by providing the check valve 7 between the automatic faucet 9 and the aspirator 6 to prevent the backflow of water from the automatic faucet 9 side. Therefore, the head pressure can be applied to the aspirator 6, so that when the water is boiled in the hot water tank 2, the expanded water can be flowed well to the drain pipe 20, and the leakage of the pota from the water outlet 9 a is eliminated. It is something that can be done.

次に、図4は変更例を示すものである。
図において、水道管からの水が供給される給水管11は、電磁弁3の下流側で第1枝管14aと第2枝管14bに分岐され、第1枝管14aは湯沸かしタンク2の底面に接続され、第2枝管14bは、湯沸かしタンク2の出口側の出湯管路8に設けられた温調弁5に接続されている。出湯管路8の温調弁5の下流側にアスピレーター6と、更にその下流側に逆止弁7が設けられ、この逆止弁7の下流側で、出湯管路8の一部の立上管8aが継手22を介して上方へ立ち上げられ、立上管8aの上端に自動水栓9が接続されている。また、アスピレーター6から分岐管路18が設けられ、この分岐管路18は排水器具19を介して排水管20に接続されている。
Next, FIG. 4 shows a modification example.
In the figure, a water supply pipe 11 to which water from a water pipe is supplied is branched into a first branch pipe 14 a and a second branch pipe 14 b on the downstream side of the electromagnetic valve 3, and the first branch pipe 14 a is the bottom surface of the water heater tank 2. The second branch pipe 14 b is connected to the temperature control valve 5 provided in the hot water outlet pipe line 8 on the outlet side of the hot water tank 2. An aspirator 6 is provided on the downstream side of the temperature control valve 5 in the hot water discharge line 8, and a check valve 7 is further provided on the downstream side. A part of the hot water discharge line 8 is started up downstream of the check valve 7. The pipe 8a is raised upward through the joint 22, and the automatic faucet 9 is connected to the upper end of the riser pipe 8a. A branch pipe 18 is provided from the aspirator 6, and the branch pipe 18 is connected to a drain pipe 20 through a drainage device 19.

図4では、分岐管路18内に逆止弁23を設けたものであり、この逆止弁23で排水管20側からの空気の侵入を防ぐことができるものとなる。
即ち、立上管8aが太い場合であっても、立上管8aおよび自動水栓9内に排水管20側から空気が入り込むことが逆止弁23により阻止されるため、立上管8aおよび自動水栓9内には空気が入らず、そのため自動水栓9および立上管8a内は残水で満たされたままの状態に維持されるものである。そのため、アスピレーター6には立上管8aおよび自動水栓9内の残水によるヘッド圧がかかっているため、湯沸かしタンク2で沸き上げが行われても、膨張水は良好にアスピレーター6から分岐管路18を通り排水管20に排出されて、吐水口9aから水滴がポタ漏れすることがないものである。
In FIG. 4, a check valve 23 is provided in the branch pipe 18, and the check valve 23 can prevent air from entering from the drain pipe 20 side.
That is, even if the riser pipe 8a is thick, the check valve 23 prevents air from entering the riser pipe 8a and the automatic faucet 9 from the drain pipe 20 side. Air does not enter the automatic faucet 9, so that the automatic faucet 9 and the riser pipe 8a are maintained in a state filled with residual water. For this reason, since the head pressure is applied to the aspirator 6 due to the residual water in the riser pipe 8a and the automatic faucet 9, the expanded water can be satisfactorily branched from the aspirator 6 even if it is heated in the water heater tank 2. It is discharged through the passage 18 to the drain pipe 20 and water droplets do not leak from the water outlet 9a.

元止め式電気温水器の概略配置構成図である。It is a schematic arrangement block diagram of a main stop type electric water heater. 湯沸かしタンクと自動水栓間の管路配置構成図であり、吐水後に残水が残されたままの状態を示している。It is the pipe line arrangement configuration figure between a water heater tank and an automatic faucet, and shows the state where the remaining water remains after water discharge. 図2の状態から、湯沸かしタンクで沸き上げが行われた時に膨張水が排水管から排出される流れを示す概略構成図である。It is a schematic block diagram which shows the flow from which expansion | swelling water is discharged | emitted from a drain pipe when boiling is performed in the water heater tank from the state of FIG. アスピレーターの分岐管路内に逆止弁を設けた変更例の湯沸かしタンクと水栓と排水管周辺の配置構成図である。It is an arrangement block diagram around a water heater tank, a faucet, and a drain pipe of a modified example in which a check valve is provided in a branch pipe line of an aspirator. 従来の吐水後の水位を示す概略配置構成図である。It is a schematic arrangement block diagram which shows the water level after the conventional water discharge. 従来、湯沸かしタンクで沸き上げ中の水位を示す概略構成図である。It is a schematic block diagram which shows the water level in the conventional boiling water tank.

符号の説明Explanation of symbols

1 電気温水器本体
2 湯沸かしタンク
2a ヒーター
3 電磁弁
5 温調弁
6 アスピレーター
7 逆止弁
8 出湯管路
8a 立上管
9 自動水栓
9a 吐水口
10 センサー
11 給水管
14a 第1枝管
14b 第2枝管
18 分岐管路
19 排水器具
20 排水管
23 逆止弁
DESCRIPTION OF SYMBOLS 1 Electric water heater body 2 Water heater tank 2a Heater 3 Solenoid valve 5 Temperature control valve 6 Aspirator 7 Check valve 8 Outlet pipe 8a Stand-up pipe 9 Automatic faucet 9a Water outlet 10 Sensor 11 Water supply pipe 14a First branch pipe 14b 2-branch pipe 18 Branch pipe line 19 Drainage device 20 Drainage pipe 23 Check valve

Claims (2)

湯沸かしタンクと水栓とをつなぐ出湯管路にアスピレーターを設け、該アスピレーターから分岐した分岐管路を排水管に接続してなる元止め式電気温水器において、
前記水栓とアスピレーターとの間に、水栓側からの水の逆流を防ぐ逆止弁を設けたことを特徴とする元止め式電気温水器。
In the main-stop type electric water heater in which an aspirator is provided in a hot water outlet pipe connecting a water heater tank and a faucet, and a branch pipe branched from the aspirator is connected to a drain pipe,
A non-retention type electric water heater provided with a check valve for preventing a reverse flow of water from the faucet side between the faucet and the aspirator.
前記分岐管路に、前記排水管側からの空気の侵入を防ぐ逆止弁を設けたことを特徴とする請求項1に記載の元止め式電気温水器。   The non-stop type electric water heater according to claim 1, wherein a check valve for preventing air from entering from the drain pipe side is provided in the branch pipe.
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Publication number Priority date Publication date Assignee Title
JP2019020054A (en) * 2017-07-18 2019-02-07 株式会社Lixil Electric water heater

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JP2003139401A (en) * 2001-10-31 2003-05-14 Nippon Itomic Co Ltd Bypass valve mechanism for main-stop/hot water storage- type electric water heater
JP2003172549A (en) * 2001-12-06 2003-06-20 Toto Ltd Draining hopper and electric water heater
JP2006010172A (en) * 2004-06-24 2006-01-12 Matsushita Electric Works Ltd Hot water storage type hot water supply system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019020054A (en) * 2017-07-18 2019-02-07 株式会社Lixil Electric water heater

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