JP2010243121A - Hot water storage water heater - Google Patents
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Abstract
【課題】膨張水として排出される熱損失を低減できる貯湯式給湯機を提供することを目的とする。
【解決手段】加熱手段１で加熱した湯を貯湯する貯湯タンク３と、前記貯湯タンク３の上部に接続され前記貯湯タンク３内の圧力が第一設定圧力以上になると前記貯湯タンク３内の湯を排出する第一圧力逃がし弁４と、前記貯湯タンク３の下部に接続され前記貯湯タンク３内の圧力が第二設定圧力以上になると前記貯湯タンク３内の湯または水を排出する第二圧力逃がし弁５とを備え、前記第一設定圧力を前記第二設定圧力よりも高く設定したことを特徴とする貯湯式給湯機で、膨張水を第二圧力逃がし弁５から貯湯タンク３外に排出するため、熱損失を低減できてエネルギー効率が向上する。
【選択図】図１An object of the present invention is to provide a hot water storage type water heater that can reduce heat loss discharged as expanded water.
A hot water storage tank 3 for storing hot water heated by a heating means 1 and a hot water tank 3 connected to an upper portion of the hot water storage tank 3 when the pressure in the hot water storage tank 3 becomes equal to or higher than a first set pressure. A first pressure relief valve 4 for discharging the hot water and a second pressure connected to the lower part of the hot water storage tank 3 for discharging hot water or water in the hot water storage tank 3 when the pressure in the hot water storage tank 3 exceeds a second set pressure. A hot water storage water heater comprising a relief valve 5, wherein the first set pressure is set higher than the second set pressure, and the expanded water is discharged from the second pressure relief valve 5 to the outside of the hot water tank 3. Therefore, heat loss can be reduced and energy efficiency is improved.
[Selection] Figure 1
Description
本発明は、貯湯式給湯機における膨張水処理構成に関するものである。 The present invention relates to an expanded water treatment configuration in a hot water storage type hot water supply machine.
従来、図３に示すような電気温水器などの貯湯式給湯機においては、加熱手段７により水を加熱して温水にする過程においては，熱膨張により水の体積が増大する（以下、もとの水の体積より増えた分の水を膨張水と称する）。 Conventionally, in a hot water storage water heater such as an electric water heater as shown in FIG. 3, the volume of water increases due to thermal expansion in the process of heating water to warm water by the heating means 7 (hereinafter referred to as “original water heater”). The amount of water that exceeds the volume of water is called expanded water).
このように膨張することにより貯湯タンク１に入りきれなくなった膨張水の処理が問題となるが、従来の貯湯式給湯装置では、貯湯タンク１の上部に接続され貯湯タンク１内の圧力が予め定められた圧力以上になると、弁が開放される圧力逃がし弁５を設けることによって、貯湯タンク１内の湯を膨張水として貯湯タンク１外に放出するようになっている（例えば、特許文献１参照）。 Although the treatment of the expanded water that cannot fully enter the hot water storage tank 1 due to expansion in this way becomes a problem, in the conventional hot water storage type hot water supply apparatus, the pressure in the hot water storage tank 1 connected to the upper part of the hot water storage tank 1 is determined in advance. When the pressure exceeds a given pressure, a pressure relief valve 5 is provided to open the valve, thereby discharging hot water in the hot water storage tank 1 to the outside of the hot water storage tank 1 as expanded water (see, for example, Patent Document 1). ).
しかしながら、従来の貯湯式給湯機のように膨張水を外部へ排出すると、わざわざ加熱した湯を捨てることになり無駄である。 However, if the expanded water is discharged to the outside like a conventional hot water storage type hot water heater, the heated hot water is thrown away, which is useless.
例えば、約４６０Ｌの貯湯タンク１に給湯された約５℃の水を約９０℃まで加熱手段７で加熱すると、約４６０Ｌの水は約４７８Ｌの湯となり、貯湯タンク１に入りきらない約１８Ｌの湯が利用されずに圧力逃がし弁５を介して貯湯タンク１から排出される。 For example, when about 5 ° C. water supplied to the about 460 L hot water storage tank 1 is heated to about 90 ° C. by the heating means 7, about 460 L of water becomes about 478 L of hot water, and about 18 L of water that cannot enter the hot water storage tank 1 Hot water is discharged from the hot water storage tank 1 through the pressure relief valve 5 without being used.
本発明は、上記課題を解決するもので、高温の膨張水が貯湯タンク外に排出されることを防止して、熱損失が少ない高効率な貯湯式給湯機を提供することを目的とする。 An object of the present invention is to solve the above-described problem, and to provide a highly efficient hot water storage type hot water heater that prevents high-temperature expanded water from being discharged outside the hot water storage tank and has little heat loss.
上記課題を解決するために、本発明の貯湯式給湯機は、加熱手段で加熱した湯を貯湯する貯湯タンクと、前記貯湯タンクの上部に接続され前記貯湯タンク内の圧力が第一設定圧力以上になると前記貯湯タンク内の湯を排出する第一圧力逃がし弁と、前記貯湯タンクの下部に接続され前記貯湯タンク内の圧力が第二設定圧力以上になると前記貯湯タンク内の湯または水を排出する第二圧力逃がし弁とを備え、前記第一設定圧力を前記第二設定圧力よりも高く設定したことを特徴とするもので、貯湯タンク上部の高温の湯が膨張水として排出されることが無くなり、貯湯タンクから膨張水として無駄に排出される熱量を低減でき、省エネを図ることができる。 In order to solve the above problems, a hot water storage type water heater of the present invention includes a hot water storage tank for storing hot water heated by a heating means, and a pressure in the hot water storage tank that is connected to an upper portion of the hot water storage tank is equal to or higher than a first set pressure. The first pressure relief valve that discharges hot water in the hot water storage tank, and the hot water or water in the hot water storage tank is discharged when the pressure in the hot water storage tank is connected to the lower part of the hot water tank and the pressure in the hot water storage tank exceeds a second set pressure. The first set pressure is set higher than the second set pressure, and the hot water at the top of the hot water storage tank is discharged as expanded water. The amount of heat exhausted from the hot water storage tank as waste water can be reduced and energy can be saved.
また、本発明の貯湯式給湯機は、加熱手段で加熱した湯を貯湯する貯湯タンクと、前記貯湯タンクの上部に接続され前記貯湯タンク内の圧力が第一設定圧力以上になると前記貯湯タンク内の湯を排出する第一圧力逃がし弁と、前記貯湯タンクの下部に接続され前記貯湯タンク内の圧力が第二設定圧力以上になると前記貯湯タンク内の湯または水を排出する第二圧力逃がし弁と、前記第一圧力逃がし弁の出口側下流に接続された開閉弁とを備え、前記第二設定圧力を前記第一設定圧力よりも高く設定したことを特徴とするもので、第一設定圧力は第二設定圧力よりも低く設定しているが、開閉弁を閉じているため、貯湯タン
ク３上部の高温の湯が膨張水として排出されることが無くなり、貯湯タンクから膨張水として無駄に排出される熱量を低減でき、省エネを図ることができる。
The hot water storage type water heater of the present invention includes a hot water storage tank for storing hot water heated by a heating means, and a hot water storage tank connected to an upper part of the hot water storage tank, and when the pressure in the hot water storage tank becomes a first set pressure or higher, A first pressure relief valve that discharges hot water and a second pressure relief valve that is connected to a lower portion of the hot water storage tank and discharges hot water or water in the hot water storage tank when the pressure in the hot water storage tank exceeds a second set pressure And an on-off valve connected downstream of the first pressure relief valve, wherein the second set pressure is set higher than the first set pressure. Is set lower than the second set pressure, but because the on-off valve is closed, the hot water at the top of the hot water tank 3 is not discharged as expanded water, and is discharged as waste water from the hot water tank. Low heat quantity Can, it is possible to achieve energy saving.
本発明によれば、貯湯タンクより発生する膨張水を第二圧力逃がし弁から水として貯湯タンク外に排出するため、従来高温の湯として排出されていた熱量を給湯に利用できるので、エネルギー効率の高い貯湯式給湯機を提供することができる。 According to the present invention, since the expansion water generated from the hot water storage tank is discharged out of the hot water storage tank as water from the second pressure relief valve, the amount of heat previously discharged as hot water can be used for hot water supply. A high hot water storage type water heater can be provided.
第１の発明は、加熱手段で加熱した湯を貯湯する貯湯タンクと、前記貯湯タンクの上部に接続され前記貯湯タンク内の圧力が第一設定圧力以上になると前記貯湯タンク内の湯を排出する第一圧力逃がし弁と、前記貯湯タンクの下部に接続され前記貯湯タンク内の圧力が第二設定圧力以上になると前記貯湯タンク内の湯または水を排出する第二圧力逃がし弁とを備え、前記第一設定圧力を前記第二設定圧力よりも高く設定したことを特徴とするもので、貯湯タンク上部の高温の湯が膨張水として排出されることが無くなり、貯湯タンクから膨張水として無駄に排出される熱量を低減でき、省エネを図ることができる。 According to a first aspect of the present invention, there is provided a hot water storage tank for storing hot water heated by a heating means, and the hot water in the hot water storage tank connected to an upper portion of the hot water storage tank when the pressure in the hot water storage tank exceeds a first set pressure. A first pressure relief valve, and a second pressure relief valve connected to the lower part of the hot water storage tank and discharging the hot water or water in the hot water storage tank when the pressure in the hot water storage tank is equal to or higher than a second set pressure, It is characterized in that the first set pressure is set higher than the second set pressure, and the hot water at the top of the hot water tank is not discharged as expanded water, and it is wasted from the hot water tank as expanded water. The amount of heat generated can be reduced and energy can be saved.
第２の発明は、加熱手段で加熱した湯を貯湯する貯湯タンクと、前記貯湯タンクの上部に接続され前記貯湯タンク内の圧力が第一設定圧力以上になると前記貯湯タンク内の湯を排出する第一圧力逃がし弁と、前記貯湯タンクの下部に接続され前記貯湯タンク内の圧力が第二設定圧力以上になると前記貯湯タンク内の湯または水を排出する第二圧力逃がし弁と、前記第一圧力逃がし弁の出口側下流に接続された開閉弁とを備え、前記第二設定圧力を前記第一設定圧力よりも高く設定したことを特徴とするもので、第一設定圧力は第二設定圧力よりも低く設定しているが、開閉弁を閉じているため、貯湯タンク３上部の高温の湯が膨張水として排出されることが無くなり、貯湯タンクから膨張水として無駄に排出される熱量を低減でき、省エネを図ることができる。 According to a second aspect of the present invention, there is provided a hot water storage tank for storing the hot water heated by the heating means, and the hot water in the hot water storage tank connected to the upper part of the hot water storage tank when the pressure in the hot water storage tank becomes a first set pressure or higher. A first pressure relief valve, a second pressure relief valve connected to a lower portion of the hot water storage tank and discharging hot water or water in the hot water storage tank when the pressure in the hot water storage tank exceeds a second set pressure, and the first An on-off valve connected downstream of the outlet side of the pressure relief valve, wherein the second set pressure is set higher than the first set pressure, wherein the first set pressure is the second set pressure However, since the on-off valve is closed, the hot water at the top of the hot water storage tank 3 is not discharged as expanded water, reducing the amount of heat that is wasted from the hot water tank as expanded water. Can save energy Rukoto can.
また、開閉弁を一時的に閉じることにより、少量の膨張水と共に貯湯タンク内に溜まった空気を排出することもできる。 Further, by temporarily closing the on-off valve, air accumulated in the hot water storage tank together with a small amount of expanded water can be discharged.
第３の発明は、第二圧力逃がし弁の出口側下流に開閉弁を接続したことを特徴とするもので、開閉弁を一時的に閉じることにより、少量の膨張水と共に貯湯タンク内に溜まった空気を排出することもできる。 The third invention is characterized in that an on-off valve is connected downstream of the second pressure relief valve on the outlet side, and the on-off valve is temporarily closed to accumulate in a hot water storage tank together with a small amount of expanded water. Air can also be discharged.
第４の発明は、加熱手段がヒートポンプであることを特徴とするもので、高効率な沸き上げ運転が可能となり、更にエネルギー効率が向上する。 The fourth invention is characterized in that the heating means is a heat pump, which enables a high-efficiency boiling operation and further improves energy efficiency.
第５の発明は、ヒートポンプユニットに使用する冷媒を二酸化炭素としたもので、比較的安価でかつ安定な二酸化炭素を冷媒に使用することで製品コストを抑えると共に信頼性を向上させることができる。 According to the fifth aspect of the present invention, the refrigerant used for the heat pump unit is carbon dioxide. By using relatively inexpensive and stable carbon dioxide for the refrigerant, the product cost can be suppressed and the reliability can be improved.
また、二酸化炭素はオゾン破壊係数がゼロであり、地球温暖化係数も代替冷媒ＨＦＣ−４０７Ｃの約１７００分の１と非常に小さいため、地球環境に優しい製品を提供できる。 In addition, carbon dioxide has an ozone depletion coefficient of zero and a global warming coefficient of about 1/700 of the alternative refrigerant HFC-407C, which is very small.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の
形態によって本発明が限定されるものではない。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
（実施の形態１）
図１は、本発明の第１の実施の形態における貯湯式給湯機の構成図を示すものであり、加熱手段はヒートポンプユニット１としている。
(Embodiment 1)
FIG. 1 shows a configuration diagram of a hot water storage type hot water heater in a first embodiment of the present invention, and a heating means is a heat pump unit 1.
図１において、ヒートポンプユニット１の冷媒回路内には二酸化炭素が封入されている。ヒートポンプユニット１による沸き上げ運転時には、貯湯タンク３底部の水が沸き上げポンプ１４により、沸き上げ配管１６を介してヒートポンプユニット１に搬送され、冷媒と熱交換して高温の湯に加熱された後に貯湯タンク３の上部に戻されることで貯湯タンク３内に湯が蓄えられる。 In FIG. 1, carbon dioxide is enclosed in the refrigerant circuit of the heat pump unit 1. During the heating operation by the heat pump unit 1, the water at the bottom of the hot water storage tank 3 is conveyed to the heat pump unit 1 by the boiling pump 14 via the heating pipe 16, exchanges heat with the refrigerant, and is heated to hot water. The hot water is stored in the hot water storage tank 3 by being returned to the upper part of the hot water storage tank 3.
貯湯タンク３の略頂部には、貯湯タンク３内の圧力が第一設定圧力以上になると、貯湯タンク３内上層部の湯を排出して、貯湯タンク３内の圧力を低下させる第一圧力逃がし弁４が接続されている。 At the top of the hot water storage tank 3, when the pressure in the hot water storage tank 3 becomes equal to or higher than the first set pressure, the hot water in the upper part of the hot water storage tank 3 is discharged to reduce the pressure in the hot water storage tank 3. Valve 4 is connected.
一方、貯湯タンク３の略底部には、貯湯タンク３内の圧力が第二設定圧力以上になると、貯湯タンク３内下層部の水または湯を排出して、貯湯タンク３内の圧力を低下させる第二圧力逃がし弁５と、第二圧力逃がし弁５の出口側配管途中に備えられた下部開閉弁８とが接続されている。また、第一設定圧力は第二設定圧力よりも高く設定されている。 On the other hand, when the pressure in the hot water storage tank 3 becomes equal to or higher than the second set pressure, the water or hot water in the lower layer of the hot water storage tank 3 is discharged to lower the pressure in the hot water storage tank 3 at the bottom of the hot water storage tank 3. The second pressure relief valve 5 and a lower on-off valve 8 provided in the middle of the outlet side piping of the second pressure relief valve 5 are connected. The first set pressure is set higher than the second set pressure.
以上のように構成された貯湯式給湯機について、以下その動作、作用を説明する。 The operation and action of the hot water storage type water heater configured as described above will be described below.
ヒートポンプユニット１で沸き上げ運転が開始されると、貯湯タンク３内の水が加熱されるために体積が膨張しようとするが、貯湯タンク３自身の容積はほとんど変化しないため、貯湯タンク３内の圧力が上昇する。この時、下部開閉弁８は開いている。 When the boiling operation is started in the heat pump unit 1, the water in the hot water storage tank 3 is heated and the volume tends to expand. However, since the volume of the hot water storage tank 3 itself hardly changes, Pressure increases. At this time, the lower on-off valve 8 is open.
沸き上げ運転継続と共に貯湯タンク３内の圧力は上昇し続けるが、圧力が第二設定圧力以上になると、貯湯タンク３底部の水または湯が第二圧力逃がし弁５、下部開閉弁８を介して膨張水として貯湯タンク３外部に排出される。 As the boiling operation continues, the pressure in the hot water storage tank 3 continues to rise, but when the pressure exceeds the second set pressure, the water or hot water at the bottom of the hot water storage tank 3 passes through the second pressure relief valve 5 and the lower on-off valve 8. The expanded water is discharged outside the hot water storage tank 3.
第一設定圧力は第二設定圧力よりも高く設定しているため、貯湯タンク３上部の高温の湯が膨張水として排出されることが無くなり、貯湯タンク３から膨張水として無駄に排出される熱量を低減でき、省エネを図ることができる。 Since the first set pressure is set higher than the second set pressure, the hot water at the top of the hot water storage tank 3 is not discharged as expanded water, and the amount of heat discharged from the hot water storage tank 3 as expelled water. Can be reduced and energy can be saved.
また、膨張水を排出することにより、貯湯タンク３内の圧力は第二設定圧力以下に保持され、貯湯タンク３の破損を防止することが出来る。 Further, by discharging the expansion water, the pressure in the hot water storage tank 3 is maintained at a second set pressure or lower, and the hot water storage tank 3 can be prevented from being damaged.
また、通常は開いている下部開閉弁８を一定期間閉じることにより、貯湯タンク３内上部に溜まった空気を、少量の湯と共に第一圧力逃がし弁４から貯湯タンク３外に排出することもできる。 In addition, by closing the normally open lower opening / closing valve 8 for a certain period of time, the air accumulated in the upper part of the hot water storage tank 3 can be discharged out of the hot water storage tank 3 from the first pressure relief valve 4 together with a small amount of hot water. .
また、第二圧力逃がし弁５、もしくは、第一圧力逃がし弁４と第二圧力逃がし弁５の両方に漏水検知手段を設けることで、漏水検知手段が圧力逃がし弁の漏水を検知した場合に、貯湯タンク３への給水を遮断すれば、第一圧力逃がし弁４や第二圧力逃がし弁５が漏水を起こした場合に、速やかに給水を遮断できるので漏水を無駄にすることがなく安全性が向上する。 Further, by providing water leakage detection means on the second pressure relief valve 5 or both the first pressure relief valve 4 and the second pressure relief valve 5, when the water leakage detection means detects leakage of the pressure relief valve, If the water supply to the hot water storage tank 3 is shut off, if the first pressure relief valve 4 or the second pressure relief valve 5 leaks water, the water supply can be shut off quickly, so that the water leakage is not wasted and safety is improved. improves.
（実施の形態２）
図２は、本発明の第２の実施の形態における貯湯式給湯機の構成図を示すものである。
図２において、実施の形態１と同一部分は同一番号を付して、その説明は省略する。
(Embodiment 2)
FIG. 2 shows a configuration diagram of a hot water storage type hot water supply apparatus according to the second embodiment of the present invention.
In FIG. 2, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
貯湯タンク３の略頂部には、貯湯タンク３内の圧力が第一設定圧力以上になると、貯湯タンク３内上層部の湯を排出して、貯湯タンク３内の圧力を低下させる第一圧力逃がし弁４と、第一圧力逃がし弁４の出口側配管途中に備えられた上部開閉弁１７とがが接続されている。 At the top of the hot water storage tank 3, when the pressure in the hot water storage tank 3 becomes equal to or higher than the first set pressure, the hot water in the upper part of the hot water storage tank 3 is discharged to reduce the pressure in the hot water storage tank 3. The valve 4 and the upper on-off valve 17 provided in the middle of the outlet side piping of the first pressure relief valve 4 are connected.
一方、貯湯タンク３の略底部には、貯湯タンク３内の圧力が第二設定圧力以上になると、貯湯タンク３内下層部の水または湯を排出して、貯湯タンク３内の圧力を低下させる第二圧力逃がし弁５が接続されている。また、第一設定圧力は第二設定圧力よりも低く設定されている。 On the other hand, when the pressure in the hot water storage tank 3 becomes equal to or higher than the second set pressure, the water or hot water in the lower layer of the hot water storage tank 3 is discharged to lower the pressure in the hot water storage tank 3 at the bottom of the hot water storage tank 3. A second pressure relief valve 5 is connected. The first set pressure is set lower than the second set pressure.
以上のように構成された貯湯式給湯機について、以下その動作、作用を説明する。 The operation and action of the hot water storage type water heater configured as described above will be described below.
ヒートポンプユニット１で沸き上げ運転が開始されると、貯湯タンク３内の水が加熱されるために体積が膨張しようとするが、貯湯タンク３自身の容積はほとんど変化しないため、貯湯タンク３内の圧力が上昇する。 When the boiling operation is started in the heat pump unit 1, the water in the hot water storage tank 3 is heated and the volume tends to expand. However, since the volume of the hot water storage tank 3 itself hardly changes, Pressure increases.
この時、上部開閉弁１７は閉じている。沸き上げ運転継続と共に貯湯タンク３内の圧力は上昇し続けるが、圧力が第二設定圧力以上になると、貯湯タンク３底部の水または湯が第二圧力逃がし弁５、下部開閉弁８を介して膨張水として貯湯タンク３外部に排出される。 At this time, the upper on-off valve 17 is closed. As the boiling operation continues, the pressure in the hot water storage tank 3 continues to rise, but when the pressure exceeds the second set pressure, the water or hot water at the bottom of the hot water storage tank 3 passes through the second pressure relief valve 5 and the lower on-off valve 8. The expanded water is discharged outside the hot water storage tank 3.
第一設定圧力は第二設定圧力よりも低く設定しているが、上部開閉弁１７を閉じているため、貯湯タンク３上部の高温の湯が膨張水として排出されることが無くなり、貯湯タンク３から膨張水として無駄に排出される熱量を低減でき、省エネを図ることができる。 The first set pressure is set lower than the second set pressure. However, since the upper on-off valve 17 is closed, the hot water at the upper part of the hot water tank 3 is not discharged as expanded water. Therefore, it is possible to reduce the amount of heat exhausted wastefully as expanded water and to save energy.
また、膨張水を排出することにより、貯湯タンク３内の圧力は第二設定圧力以下に保持され、貯湯タンク３の破損を防止することが出来る。 Further, by discharging the expansion water, the pressure in the hot water storage tank 3 is maintained at a second set pressure or lower, and the hot water storage tank 3 can be prevented from being damaged.
また、通常は閉じている上部開閉弁１７を一定期間開くことにより、貯湯タンク３内上部に溜まった空気を少量の湯と共に第一圧力逃がし弁４から貯湯タンク３外に排出することもできる。 Further, by opening the normally opened upper on-off valve 17 for a certain period of time, the air accumulated in the upper part of the hot water storage tank 3 can be discharged out of the hot water storage tank 3 from the first pressure relief valve 4 together with a small amount of hot water.
なお、本実施の形態では加熱源にヒートポンプユニットを用いて説明したが、燃焼機や電気ヒータを加熱源としても、同様の効果を得ることができる。 In the present embodiment, a heat pump unit is used as a heating source, but the same effect can be obtained even when a combustor or an electric heater is used as a heating source.
以上のように、本発明に係る貯湯式給湯機は、膨張水を貯湯タンクの底部から水として排出することにより熱損失を低減して省エネを図ることができるものであり、膨張水の発生を伴う機器全般に適用できる。 As described above, the hot water storage type water heater according to the present invention can reduce the heat loss by discharging the expanded water as water from the bottom of the hot water storage tank, and can save energy. Applicable to all related equipment.
１ ヒートポンプユニット（加熱手段）
２ 貯湯タンクユニット
３ 貯湯タンク
４ 第一圧力逃がし弁
５ 第二圧力逃がし弁
６ 第一膨張水配管
７ 第二膨張水配管
８ 下部開閉弁
９ 減圧弁
１０ 混合弁
１１ 給水配管
１２ 給湯配管
１３ 給湯端末
１４ 沸き上げポンプ
１５ 三方弁
１６ 沸き上げ配管
１７ 上部開閉弁
1 Heat pump unit (heating means)
DESCRIPTION OF SYMBOLS 2 Hot water storage tank unit 3 Hot water storage tank 4 1st pressure relief valve 5 2nd pressure relief valve 6 1st expansion water piping 7 2nd expansion water piping 8 Lower on-off valve 9 Pressure reducing valve 10 Mixing valve 11 Water supply piping 12 Hot water supply piping 13 Hot water supply terminal 14 Boiling pump 15 Three-way valve 16 Boiling piping 17 Upper on-off valve
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009094813A JP2010243121A (en) | 2009-04-09 | 2009-04-09 | Hot water storage water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009094813A JP2010243121A (en) | 2009-04-09 | 2009-04-09 | Hot water storage water heater |
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| Publication Number | Publication Date |
|---|---|
| JP2010243121A true JP2010243121A (en) | 2010-10-28 |
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ID=43096300
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| Application Number | Title | Priority Date | Filing Date |
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| JP2009094813A Pending JP2010243121A (en) | 2009-04-09 | 2009-04-09 | Hot water storage water heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015137838A (en) * | 2014-01-24 | 2015-07-30 | 東芝キヤリア株式会社 | Hot water storage water heater |
| JP2016014501A (en) * | 2014-07-02 | 2016-01-28 | 東芝キヤリア株式会社 | Water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2015137838A (en) * | 2014-01-24 | 2015-07-30 | 東芝キヤリア株式会社 | Hot water storage water heater |
| JP2016014501A (en) * | 2014-07-02 | 2016-01-28 | 東芝キヤリア株式会社 | Water heater |
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