JP2003139401A - Bypass valve mechanism for main-stop/hot water storage- type electric water heater - Google Patents
Bypass valve mechanism for main-stop/hot water storage- type electric water heaterInfo
- Publication number
- JP2003139401A JP2003139401A JP2001334433A JP2001334433A JP2003139401A JP 2003139401 A JP2003139401 A JP 2003139401A JP 2001334433 A JP2001334433 A JP 2001334433A JP 2001334433 A JP2001334433 A JP 2001334433A JP 2003139401 A JP2003139401 A JP 2003139401A
- Authority
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- Japan
- Prior art keywords
- water
- hot water
- valve
- water supply
- water storage
- 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.)
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Links
Landscapes
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、元止め式の小型電
気温水器の改良に係るもので、特に温水器の膨張水が蛇
口から排出しないようにする元止め式貯湯電気温水器用
逃し弁機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a small water heater of a main stop type, and in particular, a relief valve mechanism for a main stop type electric water heater for preventing expansion water of the water heater from being discharged from a faucet. Regarding
【0002】[0002]
【従来の技術】電気温水器には、先止め式と元止め式と
がある。温水器を元止め式とする場合は、水道水の給水
管を、二つの給水路に分岐し、一方の給水路をヒーター
とサーモスタットが装着された貯湯槽に接続して熱湯が
わとし、他方の給水路を水がわとするもので、貯湯槽か
ら排出される熱湯と水とを湯水混合水栓で混合させるこ
とで水温を調整する。この元止め式温水器の長所は、給
水圧がそのまま給湯圧として使用できることにある。こ
のため、先止め式温水器のように、減圧弁や圧力逃し弁
機構などを装着する必要がなく、安価な提供が可能であ
る。2. Description of the Related Art Electric water heaters include a front stop type and a main stop type. When the water heater is to be the main stop type, the tap water supply pipe is branched into two water supply channels, and one water supply channel is connected to a hot water tank equipped with a heater and a thermostat to form hot water, and the other The water supply path is water-cooled, and the water temperature is adjusted by mixing hot water and water discharged from the hot water storage tank with a hot and cold water mixing faucet. The advantage of this hot water heater is that the water supply pressure can be used as it is as the hot water supply pressure. Therefore, unlike a stop water heater, it is not necessary to mount a pressure reducing valve, a pressure relief valve mechanism, or the like, and it is possible to provide at low cost.
【0003】ところが、従来の元止め式の温水器は、貯
湯槽から先の給湯がわを開放にして貯湯槽内の膨張水を
排出させるので、湯水混合水栓の蛇口から、この膨張水
が自然排出される構造になっている。そのため、排出時
に滴り落ちる膨張水が給湯器の故障によるものと勘違い
されるケースがあるなど、ユーザーに誤解を与える虞が
あった。However, in the conventional hot water heater of the original stop type, the expansion water in the hot water storage tank is discharged by opening the hot water supply tank at the front of the hot water storage tank, so that this expansion water is discharged from the faucet of the hot and cold water mixing faucet. It has a structure that allows natural discharge. Therefore, there is a risk of misunderstanding the user, for example, that the expanded water that drips during discharge may be mistaken for a malfunction of the water heater.
【0004】そこで、貯湯槽から先の給湯がわに、開閉
自在な安全弁が設けられた元止め式の温水器なども提案
されている。この安全弁は、貯湯槽が高圧になったとき
に開放する構造になっており、この安全弁を介すること
により、膨張水が自然落下するのを防止している。とこ
ろが、安全弁を開放させる程の高い圧力が貯湯槽や給湯
路に加わると、これらの貯湯槽や給湯路の寿命を短縮さ
せる虞があり、また、安全弁の経年劣化により安全弁が
有効に機能しなった場合の危険も生じている。Therefore, there has also been proposed a hot water heater of a main stop type, in which a hot-water supply tank ahead of which is provided with a safety valve that can be opened and closed. This safety valve has a structure that opens when the hot water storage tank has a high pressure, and prevents the expansion water from dropping spontaneously through this safety valve. However, if a pressure high enough to open the safety valve is applied to the hot water storage tank or hot water supply passage, the life of these hot water storage tank or hot water supply passage may be shortened, and the safety valve may not function effectively due to deterioration over time. There is also the danger of being caught.
【0005】このような安全弁の機能を更に改良した無
圧開放弁が、特開平11‐125468号公報に記載されてい
る。この無圧開放弁は、流圧のごく低い膨張水であって
も、膨張水を排出できるようにすることで、貯湯槽の圧
力上昇を防止できるように工夫されている。すなわち、
閉弁時でも膨張水が通過する通湯孔が形成され、湯の流
圧によって開弁する入湯弁と、該入湯弁を常時入湯口側
へ付勢する入湯側スプリングと、前記排出口に開閉自在
に取り付けられた排出弁と、前記入湯弁の開弁時には前
記排出弁を閉弁させ、前記入湯弁の閉弁時には前記排出
弁を開弁させる開閉機構とからなる構造を採用してい
る。A pressureless open valve further improving the function of such a safety valve is disclosed in Japanese Patent Laid-Open No. 11-125468. This non-pressure release valve is devised to prevent the pressure rise in the hot water storage tank by allowing the expansion water to be discharged even if the expansion water has a very low flow pressure. That is,
A hot water hole through which expanded water passes even when the valve is closed, is opened by the flow pressure of hot water, a hot water spring that constantly urges the hot water valve toward the hot water inlet side, and an open / close opening at the discharge port. A structure including a discharge valve that is freely attached and an opening / closing mechanism that closes the discharge valve when the hot water inlet valve is opened and opens the discharge valve when the hot water inlet valve is closed is employed.
【0006】[0006]
【発明が解決しようとする課題】ところが、この無圧開
放弁によると前述の如く、入湯弁、入湯側スプリング、
排出弁、開閉機構などの複雑な構造が必要になってい
る。したがって、この無圧開放弁自体の製造コストが高
くなるものであった。しかも、この無圧開放弁は、貯湯
槽から先の給湯路がわに装着する弁になっているので、
弁の内部に湯のスケールが溜まりやすい位置になってい
る。また、この無圧開放弁では、加熱されて膨張した膨
張水や、給湯時の熱湯が弁の内部を常時流れるので、こ
の熱による弁各部に対する影響が耐久性の課題として残
されている。However, according to this pressureless release valve, as described above, the hot water inlet valve, the hot water inlet side spring,
A complicated structure such as a discharge valve and an opening / closing mechanism is required. Therefore, the manufacturing cost of the pressureless open valve itself is high. Moreover, this pressureless open valve is a valve that is attached to the hot water supply passage from the hot water storage tank
It is located so that the scale of the hot water easily accumulates inside the valve. Further, in this pressureless open valve, the expanded water that has been heated and expanded and the hot water at the time of hot water supply always flow inside the valve, so the influence of this heat on each part of the valve remains a durability issue.
【0007】そこで、本発明は上述の課題を解消すべ
く、元止め式温水器において、自然排出される膨張水を
蛇口から配出しないようにすることで、ユーザーにあら
ぬ誤解を与える虞を解消し、しかも、極めて簡単な構成
でメンテナンスも容易になり、安全な使用ができる元止
め式貯湯電気温水器用逃し弁機構の提供を目的とするも
のである。Therefore, in order to solve the above-mentioned problems, the present invention prevents the expansion water that is naturally discharged from being dispensed from the faucet in the main stop type water heater, which may give a misunderstanding to the user. It is an object of the present invention to provide a relief valve mechanism for a hot water storage type electric water heater that can be used safely, because it can be eliminated and can be easily maintained with an extremely simple structure.
【0008】[0008]
【課題を解決するための手段】上述の目的を達成すべく
本発明の第1の手段は、給水がわから貯湯槽2へ至る給
水路Aに元止め混合水栓1を装着した元止め式貯湯電気
温水器に装着する逃し弁機構10を構成する。元止め混
合水栓から貯湯槽へ給水する給水路に装着され、給水時
に開放する給水逆止弁11と、該給水逆止弁11から貯
湯槽2までの間に装着され、給水時に閉じる排水弁12
とで構成され、止水時に排水弁12のみを開放するよう
に形成して貯水槽から逆流する膨張水を排水弁12から
排出することにある。In order to achieve the above-mentioned object, the first means of the present invention is to provide a main-stop type hot water storage in which a main-stop mixing faucet 1 is attached to a water supply passage A from a water supply tank to a hot water tank 2. A relief valve mechanism 10 mounted on an electric water heater is configured. A water supply check valve 11 that is installed in a water supply channel that supplies water from a main stop mixing faucet to a hot water tank and that opens when water is supplied, and a drain valve that is installed between the water check valve 11 and the hot water tank 2 and that closes when water is supplied 12
It is configured to open only the drain valve 12 when the water is stopped, and to discharge the expanded water that flows back from the water storage tank from the drain valve 12 when the water is stopped.
【0009】第2の手段の排水弁12は、前記給水逆止
弁11と同じ構成の逆止弁12Aを、弁開放用の支持ス
プリング12Bにて開放状態で支持した請求項1記載の
元止め式貯湯電気温水器用逃し弁機構。The drainage valve 12 of the second means, the check valve 12A having the same structure as the water supply check valve 11 is supported in an open state by a support spring 12B for opening the valve. Relief valve mechanism for electric hot water storage system.
【0010】第3の手段は、前記貯湯槽2から元止め混
合水栓1に至る給湯路Bに給湯逆止弁を装着した元止め
式貯湯電気温水器に逃し弁機構10を設けたことを課題
解消のための手段とする。The third means is that the relief valve mechanism 10 is provided in an original hot water storage electric water heater equipped with a hot water check valve in a hot water supply passage B from the hot water storage tank 2 to the original stop mixed faucet 1. It will be a means to solve the problem.
【0011】本発明によると、この逃し弁機構10は、
給水時に給水逆止弁11が開放すると共に、排水弁12
が閉じるように構成されている。止水時において、貯湯
槽2内の温度上昇に伴って膨張した水は、逃し弁機構1
0の排水弁12から排出されるものである。According to the present invention, the relief valve mechanism 10 comprises:
At the time of water supply, the water check valve 11 opens and the drain valve 12
Is configured to close. When the water is stopped, the water that has expanded as the temperature inside the hot water storage tank 2 rises is released from the relief valve mechanism 1
It is discharged from the drain valve 12 of No. 0.
【0012】[0012]
【発明の実施の形態】以下、図面を参照して本発明の実
施の形態を説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【0013】本発明逃し弁機構10は、給水がわから貯
湯槽2へ至る給水路Aに元止め混合水栓1を装着した元
止め式貯湯電気温水器に装着するものである(図1参
照)。この貯湯槽2は、従来の先止め式温水器や元止め
式温水器と同じ仕様の貯湯槽2を用いるもので、例え
ば、発熱体5、温度センサー6、サーモスタット7を装
着している。The relief valve mechanism 10 of the present invention is attached to a main stop type hot water storage electric water heater in which a main stop mixing faucet 1 is mounted in a water supply passage A from the water supply to the hot water storage tank 2 (see FIG. 1). . The hot water storage tank 2 uses the hot water storage tank 2 having the same specifications as those of the conventional front stop type water heater and main stop type water heater, and is equipped with, for example, a heating element 5, a temperature sensor 6, and a thermostat 7.
【0014】水道に繋がる給水路Aは、元止め混合水栓
1を介して貯湯槽2に接続されている。そして、本発明
逃し弁機構10は、この給水路Aの元止め混合水栓1貯
湯槽2との間に装着する給水逆止弁11と排水弁12と
にて構成する(図2参照)。A water supply path A connected to the water supply is connected to a hot water storage tank 2 via a main stop mixing faucet 1. The relief valve mechanism 10 of the present invention is composed of a water supply check valve 11 and a drain valve 12 which are installed between the main stop mixing faucet 1 and the hot water storage tank 2 of the water supply passage A (see FIG. 2).
【0015】給水逆止弁11は、元止め混合水栓から貯
湯槽へ給水する給水路に装着され、給水時に開放する逆
止弁で、止水時に閉塞する。図示の給水逆止弁11は、
プランジャー11Aとスプリング11Bとを備えた給水
逆止弁11で、給水路Aのパイプ内部に装着している。The water supply check valve 11 is a check valve which is attached to a water supply passage for supplying water from the main stop mixed water faucet to the hot water tank and which is opened at the time of water supply and is closed at the time of water stop. The water supply check valve 11 shown is
A water supply check valve 11 including a plunger 11A and a spring 11B is mounted inside the pipe of the water supply passage A.
【0016】排水弁12は、給水逆止弁11から貯湯槽
2までの間に装着する逆止弁で、給水時に閉じるように
装着する(図2参照)。そして、止水時においても、こ
の排水弁12のみを開放するように形成してあり、貯水
槽から逆流する膨張水を排水弁12から排出する(図3
参照)。図示例の排水弁12は、給水逆止弁11と同じ
ように、プランジャー12Aaとスプリング12Abと
を備えた逆止弁12Aを使用している。そして、この排
水弁12を支持スプリング12Bにて開放状態で支えた
ものである。The drain valve 12 is a check valve installed between the water supply check valve 11 and the hot water storage tank 2, and is installed so as to close when water is supplied (see FIG. 2). Then, even when the water is stopped, only the drain valve 12 is formed so as to be opened, and the expansion water flowing back from the water storage tank is discharged from the drain valve 12 (FIG. 3).
reference). Like the water supply check valve 11, the drain valve 12 of the illustrated example uses a check valve 12A including a plunger 12Aa and a spring 12Ab. The drain valve 12 is supported by the support spring 12B in an open state.
【0017】排水弁12は、元止め混合水栓1からの給
水圧力を受けたときに弁が閉じ(図2参照)、止水され
たときに支持スプリング12Bの反発力で開放する(図
3参照)。図示の支持スプリング12Bは、給水路Aの
一部に排水路Cを形成し、この排水路Cの内部に排水弁
12を装着している。更に、排水路Cの排出口4にコイ
ルスプリングで構成された支持スプリング12B装着
し、この支持スプリング12Bにて排水弁12を開放す
るように支持している。膨張水は、支持スプリング12
Bにて開放された排水弁12から、排出口4を伝って排
出される(図4参照)。尚、支持スプリング12Bは、
コイルスプリングに変えて他の弾性材を利用することも
可能である。The drain valve 12 closes when it receives the water supply pressure from the main stop mixing faucet 1 (see FIG. 2) and opens when the water is stopped by the repulsive force of the support spring 12B (FIG. 3). reference). The illustrated support spring 12B has a drainage channel C formed in a part of the water supply channel A, and the drainage valve 12 is mounted inside the drainage channel C. Further, a support spring 12B composed of a coil spring is attached to the discharge port 4 of the drainage channel C, and the drainage valve 12 is supported by the support spring 12B so as to be opened. The expansion water is the support spring 12
The water is discharged from the drain valve 12 opened at B through the discharge port 4 (see FIG. 4). The support spring 12B is
It is possible to use another elastic material instead of the coil spring.
【0018】図中符号3は給湯逆止弁3である。この給
湯逆止弁3は、貯湯槽2から元止め混合水栓1に至る給
湯路Bに装着することで、安全弁として利用される。こ
の給湯逆止弁3の装着は任意に選択できるもので、給湯
路Bを装着していなくても逃し弁機構10を使用するこ
とができる。Reference numeral 3 in the figure is a hot water supply check valve 3. The hot water supply check valve 3 is used as a safety valve by being installed in the hot water supply passage B extending from the hot water storage tank 2 to the main stop mixing faucet 1. The mounting of the hot water check valve 3 can be arbitrarily selected, and the relief valve mechanism 10 can be used even if the hot water supply passage B is not mounted.
【0019】[0019]
【発明の効果】本発明温水器は、上述のように構成した
ことにより当初の目的を達成した。すなわち、元止め混
合水栓から貯湯槽へ給水する給水路に装着され、給水時
に開放する給水逆止弁11と、該給水逆止弁11から貯
湯槽2までの間に装着され、給水時に閉じる排水弁12
とで構成され、止水時に排水弁12のみを開放するよう
に形成して貯水槽から逆流する膨張水を排水弁12から
排出するから、従来の元止め式温水器のように、自然排
出される膨張水が蛇口から滴り落ちる状態は無くなっ
た。この結果、ユーザーにあらぬ誤解を与える虞を解消
した。The water heater of the present invention has achieved the initial object by being constructed as described above. That is, it is mounted on a water supply passage for supplying water from the main stop mixed faucet to the hot water tank, and is installed between the water check valve 11 that opens at the time of water supply and the water check valve 11 to the hot water tank 2 and closes when water is supplied. Drain valve 12
The drainage valve 12 is configured so that only the drain valve 12 is opened when the water is stopped, and the expansion water that flows backward from the water storage tank is discharged from the drain valve 12. Therefore, it is naturally discharged like the conventional main-stop water heater. There is no longer any swelling water dripping from the faucet. As a result, the possibility of giving a misunderstanding to the user is eliminated.
【0020】また、排水弁12は、前記給水逆止弁11
と同じ構成の逆止弁12Aを、弁開放用の支持スプリン
グ12Bにて開放状態で支持したことにより、極めて簡
単な機構で逃し弁機構10を構成することができ、安価
な提供が可能である。The drain valve 12 is the water supply check valve 11 described above.
By supporting the check valve 12A having the same configuration as the above in the open state by the support spring 12B for opening the valve, the relief valve mechanism 10 can be configured with an extremely simple mechanism, and it is possible to provide at a low cost. .
【0021】更に、貯湯槽2から元止め混合水栓1に至
る給湯路Bに給湯逆止弁3を装着した元止め式貯湯電気
温水器に逃し弁機構10を設けることで、例え、給湯逆
止弁3が損傷しても安全な使用ができる。Further, by providing the relief valve mechanism 10 in the main stop type hot water storage electric water heater in which the hot water supply check valve 3 is attached to the hot water supply path B from the hot water storage tank 2 to the main stop mixing faucet 1, for example, hot water supply reverse Even if the stop valve 3 is damaged, it can be used safely.
【0022】このように本発明によると、自然排出され
る膨張水を蛇口から配出しないようにすることで、ユー
ザーにあらぬ誤解を与える虞を解消し、しかも、極めて
簡単な構成でメンテナンスも容易になり、安全な使用が
できるなどといった種々の効果を奏するものである。As described above, according to the present invention, the expansion water discharged naturally is prevented from being dispensed from the faucet, thereby eliminating the possibility of misunderstanding to the user, and the maintenance is performed with an extremely simple structure. It has various effects such as ease of use and safe use.
【図1】本発明の一実施例を示す概略図である。FIG. 1 is a schematic view showing an embodiment of the present invention.
【図2】本発明における逃し弁機構の給水状態を示す断
面図である。FIG. 2 is a sectional view showing a water supply state of the relief valve mechanism according to the present invention.
【図3】本発明における逃し弁機構の止水状態を示す断
面図である。FIG. 3 is a sectional view showing a water stop state of the relief valve mechanism according to the present invention.
【図4】本発明における排水弁から膨張水を排出する状
態を示す断面図である。FIG. 4 is a cross-sectional view showing a state in which expanded water is discharged from the drain valve according to the present invention.
A 給水路 B 給湯路 C 排水路 1 元止め混合水栓 2 貯湯槽 3 給湯逆止弁 4 排出口 5 発熱体 6 温度センサー 7 サーモスタット 10 逃し弁機構 11 給水逆止弁 11A プランジャー 11B スプリング 12 排水弁 12A 排水弁 12Aa プランジャー 12Ab スプリング 12B 支持スプリング A water supply channel B hot water supply passage C drain 1-way stop mixing faucet 2 hot water storage tank 3 Hot water check valve 4 outlets 5 heating element 6 temperature sensor 7 thermostat 10 Relief valve mechanism 11 Water check valve 11A Plunger 11B spring 12 drain valve 12A drain valve 12Aa Plunger 12Ab spring 12B support spring
Claims (3)
め混合水栓を装着した元止め式貯湯電気温水器に装着す
る逃し弁機構において、元止め混合水栓から貯湯槽へ給
水する給水路に装着され、給水時に開放する給水逆止弁
と、該給水逆止弁から貯湯槽までの間に装着され、給水
時に閉じる排水弁とで構成され、止水時に排水弁のみを
開放するように形成して貯水槽から逆流する膨張水を排
水弁から排出することを特徴とする元止め式貯湯電気温
水器用逃し弁機構。1. In a relief valve mechanism attached to a main stop type hot water storage electric water heater in which a main stop mixing water faucet is attached to a water supply path from a water supply to a hot water storage tank, water supply for supplying water from the main stop mixing faucet to the hot water tank It consists of a water supply check valve that is installed in the channel and opens when water is supplied, and a drain valve that is installed between the water supply check valve and the hot water tank and that closes when water is supplied.Only the drain valve is opened when water is stopped. A relief valve mechanism for a hot water storage electric water heater, which is characterized in that the expansion water that is formed in the water tank and flows back from the water storage tank is discharged from a drain valve.
成の逆止弁を、弁開放用の支持スプリングにて開放状態
で支持した請求項1記載の元止め式貯湯電気温水器用逃
し弁機構。2. The relief valve for a hot water storage electric water heater according to claim 1, wherein the drain valve includes a check valve having the same structure as the water supply check valve in an open state by a support spring for opening the valve. Valve mechanism.
め混合水栓に至る給湯路に給湯逆止弁を装着した元止め
式貯湯電気温水器に設けられた請求項1記載の元止め式
貯湯電気温水器用逃し弁機構。3. The main stop according to claim 1, wherein the relief valve mechanism is provided in a main stop type hot water storage electric water heater equipped with a hot water check valve in a hot water supply path from the hot water tank to the main stop mixed faucet. Relief valve mechanism for electric hot water storage system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001334433A JP2003139401A (en) | 2001-10-31 | 2001-10-31 | Bypass valve mechanism for main-stop/hot water storage- type electric water heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001334433A JP2003139401A (en) | 2001-10-31 | 2001-10-31 | Bypass valve mechanism for main-stop/hot water storage- type electric water heater |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003139401A true JP2003139401A (en) | 2003-05-14 |
Family
ID=19149562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001334433A Pending JP2003139401A (en) | 2001-10-31 | 2001-10-31 | Bypass valve mechanism for main-stop/hot water storage- type electric water heater |
Country Status (1)
Country | Link |
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JP (1) | JP2003139401A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008070008A (en) * | 2006-09-12 | 2008-03-27 | Inax Corp | Mechanism for draining expanded water from main stop system electric water heater |
JP2009041888A (en) * | 2007-08-10 | 2009-02-26 | Inax Corp | Main stop system electric water heater |
JP2018040526A (en) * | 2016-09-06 | 2018-03-15 | 株式会社Lixil | Storage type water heater |
-
2001
- 2001-10-31 JP JP2001334433A patent/JP2003139401A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008070008A (en) * | 2006-09-12 | 2008-03-27 | Inax Corp | Mechanism for draining expanded water from main stop system electric water heater |
JP2009041888A (en) * | 2007-08-10 | 2009-02-26 | Inax Corp | Main stop system electric water heater |
JP2018040526A (en) * | 2016-09-06 | 2018-03-15 | 株式会社Lixil | Storage type water heater |
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