JP5423344B2 - Hot water storage water heater - Google Patents

Hot water storage water heater Download PDF

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JP5423344B2
JP5423344B2 JP2009265200A JP2009265200A JP5423344B2 JP 5423344 B2 JP5423344 B2 JP 5423344B2 JP 2009265200 A JP2009265200 A JP 2009265200A JP 2009265200 A JP2009265200 A JP 2009265200A JP 5423344 B2 JP5423344 B2 JP 5423344B2
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hot water
water storage
heat insulating
drainage
insulating material
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JP2011106791A (en
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忠明 柳
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Mitsubishi Electric Corp
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Description

この発明は、貯湯タンクを備える貯湯式給湯機に関する。   The present invention relates to a hot water storage type water heater provided with a hot water storage tank.

従来の貯湯式給湯機は、貯湯タンク（貯湯缶体）と、当該貯湯タンクの周囲を覆う複数の成形断熱材とを備えている。この従来の成形断熱材には、貯湯タンクに接続された配管を収めるための配管用溝部が設けられている（例えば、特許文献１参照）。   A conventional hot water storage type hot water heater includes a hot water storage tank (hot water storage can) and a plurality of molded heat insulating materials covering the periphery of the hot water storage tank. This conventional molded heat insulating material is provided with a groove portion for piping for accommodating piping connected to a hot water storage tank (see, for example, Patent Document 1).

特開２００２−３１０５１１号公報JP 2002-310511 A

しかしながら、上述した従来の貯湯式給湯機では、上方に配置された構成部品から排出される流体を、貯湯タンクよりも下方に設けられるドレンパンに導いたり若しくは貯湯タンクの下方から外部に導いたりするためには、給湯機と同等長さの配管（例えば、ゴムホースや銅パイプ）が必要となる。このため、配管の長さが長くなってしまい、配管の引き回し、固定、組立等が困難となるという問題点があった。また、そのような配管を備える構成では、部品点数などの削減も難しく、不経済という問題点もあった。   However, in the above-described conventional hot water storage type hot water heater, the fluid discharged from the components disposed above is guided to a drain pan provided below the hot water storage tank or guided from the lower side of the hot water storage tank to the outside. Requires a pipe (for example, a rubber hose or a copper pipe) having the same length as the water heater. For this reason, the length of the piping becomes long, and there is a problem that it is difficult to route, fix, and assemble the piping. In addition, in the configuration including such a pipe, it is difficult to reduce the number of parts and the like, which is uneconomical.

この発明は、上述のような課題を解決するためになされたもので、簡単な構成を用いて貯湯式給湯機の構成部品から排出される流体の経路を構成することのできる貯湯式給湯機を提供することを目的とする。   The present invention has been made to solve the above-described problems, and provides a hot water storage type hot water heater capable of configuring a path of fluid discharged from the components of the hot water storage type hot water heater using a simple configuration. The purpose is to provide.

この発明に係る貯湯式給湯機は、湯を貯える貯湯タンクと、貯湯タンクの上部を覆う上部断熱材と、貯湯タンクの胴体部分を覆う中部断熱材と、貯湯タンクの下部を覆う下部断熱材とを含み、貯湯タンクの周囲を覆う成形発泡断熱材と、貯湯タンクの上部に配設され、貯湯タンク内の湯の圧力を逃がす際に開く圧力逃がし弁と、上部断熱材、中部断熱材、および下部断熱材を連通するように形成され、圧力逃がし弁からの排水が流れる排水通路と、一端が圧力逃がし弁の排水部に接続され、他端が上部断熱材に形成された排水通路内に位置するように取り付けられた排水配管と、を備え、上部断熱材における排水通路の通路幅は、排水配管の外径よりも大きな寸法となるように構成されているものである。
The hot water storage type hot water heater according to the present invention includes a hot water storage tank for storing hot water , an upper heat insulating material that covers the upper part of the hot water storage tank, a middle heat insulating material that covers the body portion of the hot water storage tank, and a lower heat insulating material that covers the lower part of the hot water storage tank. A molded foam heat insulating material that covers the periphery of the hot water storage tank, a pressure relief valve that is disposed in the upper part of the hot water storage tank and opens when the hot water pressure in the hot water storage tank is released, an upper heat insulating material, a middle heat insulating material, and A drainage passage that is formed so as to communicate with the lower insulation material and through which the drainage from the pressure relief valve flows , and one end is connected to the drainage part of the pressure relief valve and the other end is located in the drainage passage formed in the upper insulation material And a drain pipe that is attached in such a manner that the passage width of the drain passage in the upper heat insulating material is larger than the outer diameter of the drain pipe .

この発明によれば、簡単な構成を用いて貯湯式給湯機の構成部品から排出される流体の経路を構成することができる。   According to this invention, the path | route of the fluid discharged | emitted from the component of a hot water storage type hot water heater can be comprised using a simple structure.

本発明の実施の形態１に係る貯湯式給湯機の正面図（Ａ）、側面図（Ｂ）、および分解斜視図（Ｃ）である。It is the front view (A), side view (B), and disassembled perspective view (C) of the hot water storage type hot water heater according to Embodiment 1 of the present invention. 本発明の実施の形態１に係る貯湯式給湯機の発泡断熱材の排水通路中を示す平面図（Ａ）、正面図（Ｂ）、および、貯湯式給湯機１０を図２（Ａ）中の切断線Ｘ−Ｘで切断した断面図（Ｃ）である。FIG. 2A is a plan view (A), a front view (B), and a hot water storage type water heater 10 showing the inside of the drainage passage of the foam heat insulating material of the hot water storage type water heater according to Embodiment 1 of the present invention. It is sectional drawing (C) cut | disconnected by the cutting line XX. 本発明の実施の形態１に係る貯湯式給湯機の発泡断熱材の排水通路を示す斜視図である。It is a perspective view which shows the drainage channel | path of the foaming heat insulating material of the hot water storage type hot water heater which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る貯湯式給湯機の発泡断熱材の分解斜視図である。It is a disassembled perspective view of the foaming heat insulating material of the hot water storage type hot water heater which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る、排水通路の合わせ部分を示す概略図（Ａ）、および排水通路の上端側の端部受け部形状を示す概略図（Ｂ）である。It is the schematic (A) which shows the match | combining part of a drainage channel based on Embodiment 1 of this invention, and the schematic diagram (B) which shows the edge part receiving part shape by the side of the upper end of a drainage channel. 本発明の実施の形態１の変形例における中部断熱材（左側部断熱材）が備える流体通路構成用断熱材の構成を示す平面図（Ａ）および側面図（Ｂ）である。It is the top view (A) and side view (B) which show the structure of the heat insulating material for fluid passage structure with which the middle part heat insulating material (left side heat insulating material) in the modification of Embodiment 1 of this invention is provided.

実施の形態１．
図１は、本発明の実施の形態１に係る貯湯式給湯機の正面図（Ａ）、側面図（Ｂ）、および分解斜視図（Ｃ）である。より具体的には、図１（Ｃ）は、貯湯タンク、外装ケース、および発泡断熱材の構成を示している。 Embodiment 1 FIG.
1 is a front view (A), a side view (B), and an exploded perspective view (C) of a hot water storage type hot water supply apparatus according to Embodiment 1 of the present invention. More specifically, FIG.1 (C) has shown the structure of the hot water storage tank, the exterior case, and the foaming heat insulating material.

図１中の各図に示すように、貯湯式給湯機１０は、外装ケース１内に、図示省略する加熱手段により沸き上げられる湯を貯える貯湯タンク２を備えている。貯湯タンク２の周囲（外周）は、成形発泡断熱材３によって覆われている。成形発泡断熱材３としては、例えば、発泡ポリスチレンを用いることができる。   As shown in each figure in FIG. 1, the hot water storage type hot water heater 10 includes a hot water storage tank 2 for storing hot water heated by heating means (not shown) in an exterior case 1. The periphery (outer periphery) of the hot water storage tank 2 is covered with a molded foam heat insulating material 3. As the molded foam heat insulating material 3, for example, expanded polystyrene can be used.

外装ケース１は、前面ケース１ａ、側面ケース(右)１ｂ、側面ケース(左)１ｃ、背面ケース１ｄ、上面ケース１ｅ、および底面ケース１ｆによって構成されている。貯湯タンク２よりも下方に配置された底面ケース１ｆは、貯湯式給湯機１０の構成部品からの排水を受けるドレンパンとしても機能するものである。底面ケース１ｆには、給湯機本体外部に通ずる排水口１ｇと、底面ケース１ｆ上で集められた水を排出するドレン排水口１ｈとが設けられている。   The exterior case 1 includes a front case 1a, a side case (right) 1b, a side case (left) 1c, a back case 1d, a top case 1e, and a bottom case 1f. The bottom case 1 f disposed below the hot water storage tank 2 also functions as a drain pan that receives drainage from the components of the hot water storage hot water heater 10. The bottom case 1f is provided with a drain port 1g communicating with the outside of the water heater main body and a drain drain port 1h for discharging water collected on the bottom case 1f.

図２は、本発明の実施の形態１に係る貯湯式給湯機の発泡断熱材の排水通路を示す平面図（Ａ）、正面図（Ｂ）、および、貯湯式給湯機１０を図２（Ａ）中の切断線Ｘ−Ｘで切断した断面図（Ｃ）である。図３は、本発明の実施の形態１に係る貯湯式給湯機の発泡断熱材の排水通路を示す斜視図である。図４は、本発明の実施の形態１に係る貯湯式給湯機の発泡断熱材の分解斜視図である。   FIG. 2 is a plan view (A), a front view (B), and a hot water storage type water heater 10 showing the drainage passage of the foam heat insulating material of the hot water storage type water heater according to Embodiment 1 of the present invention. It is sectional drawing (C) cut | disconnected by the cutting line XX in the inside. FIG. 3 is a perspective view showing the drainage passage of the foam heat insulating material of the hot water storage hot water supply apparatus according to Embodiment 1 of the present invention. FIG. 4 is an exploded perspective view of the foam heat insulating material of the hot water storage hot water supply apparatus according to Embodiment 1 of the present invention.

図１〜４に示すように、成形発泡断熱材３は、貯湯タンク２の上部を覆う上部断熱材３ａと、貯湯タンク２の胴体部分を覆う中部断熱材（左側部断熱材３ｂと右側部断熱材３ｃ）と、貯湯タンク２の下部を覆う下部断熱材３ｄとにより構成されている。成形発泡断熱材３には、上部断熱材３ａ、左側部断熱材３ｂ、および下部断熱材３ｄを連通するように排水通路４が形成されている。   As shown in FIGS. 1 to 4, the molded foam heat insulating material 3 includes an upper heat insulating material 3 a that covers the upper portion of the hot water storage tank 2, and a middle heat insulating material that covers the body portion of the hot water storage tank 2 (the left heat insulating material 3 b and the right heat insulating material). Material 3c) and a lower heat insulating material 3d covering the lower part of the hot water storage tank 2. A drainage passage 4 is formed in the molded foam heat insulating material 3 so as to communicate the upper heat insulating material 3a, the left side heat insulating material 3b, and the lower heat insulating material 3d.

貯湯タンク２の上部には、貯湯式給湯機１０の構成部品５が配設されている。このような構成部品５としては、例えば、貯湯タンク２内の湯の圧力が所定値以上である時に開くように設定された圧力逃がし弁が相当する。このような圧力逃がし弁５が規定通りに開くと、貯湯タンク２内から湯が排水されるので、貯湯タンク２内の圧力を下げることができる。また、圧力逃がし弁５に異常が生じた場合（例えば、異物等の混入により圧力逃がし弁５が開いた状態で保持された状態となった場合）にも、圧力逃がし弁５を介して貯湯タンク２内の湯が排出されるようになる。   In the upper part of the hot water storage tank 2, the component 5 of the hot water storage type hot water heater 10 is disposed. Such a component 5 corresponds to, for example, a pressure relief valve that is set to open when the pressure of hot water in the hot water storage tank 2 is equal to or higher than a predetermined value. When such a pressure relief valve 5 is opened as prescribed, hot water is drained from the hot water storage tank 2, so that the pressure in the hot water storage tank 2 can be lowered. In addition, when an abnormality occurs in the pressure relief valve 5 (for example, when the pressure relief valve 5 is held in an open state due to foreign matter or the like), the hot water storage tank is connected via the pressure relief valve 5. The hot water in 2 is discharged.

上記排水通路４は、上記構成部品（圧力逃がし弁）５が規定通りに作動した場合若しくは上記異常が生じた場合に当該構成部品５から排出される水が流れる通路として構成されている。排水通路４は、上部断熱材３ａに形成された排水通路上部４ａと、左側部断熱材３ｂの内部に中空状に形成された排水通路中部４ｂと、下部断熱材３ｄに中空状に形成された排水通路下部４ｃとにより構成されている。このような構成により、上記構成部品５からの排水が排水通路４（４ａ、４ｂ、４ｃ）を通って、ドレンパンとして機能する底面ケース１ｆ上に導かれるようになっている。底面ケース１ｆ上に集められた上記排水は、ドレン排水口１ｈを介して排出されるようになっている。尚、このようなドレン排水口１ｈを介して排出されるものに限らず、例えば、上記構成部品５からの排水が排水通路４を通った後に、外部に通ずる排水口１ｇを介して、ドレンパンを介さずに貯湯タンク２の下方から外部に排出されるように構成されたものであってもよい。   The drainage passage 4 is configured as a passage through which water discharged from the component 5 flows when the component (pressure relief valve) 5 operates as specified or when the abnormality occurs. The drainage passage 4 is formed hollow in the drainage passage upper portion 4a formed in the upper heat insulating material 3a, the drainage passage middle portion 4b formed hollow in the left side heat insulating material 3b, and the lower heat insulating material 3d. It is comprised by the drainage channel lower part 4c. With such a configuration, the drainage from the component 5 is guided through the drainage passage 4 (4a, 4b, 4c) onto the bottom case 1f that functions as a drain pan. The drainage collected on the bottom case 1f is discharged through a drain drainage port 1h. It should be noted that the drain pan is not limited to that discharged through the drain drain port 1h. For example, the drain pan from the component 5 passes through the drain passage 4 and then passes through the drain port 1g connected to the outside. It may be configured to be discharged to the outside from below the hot water storage tank 2 without being interposed.

また、上記構成部品５からの排水が底面ケース１ｆに設けられたドレン排水口１ｈに導かれるようにするため、上記構成部品５の排水ドレン部（排水口）５ａには、図２（Ｂ）に示すように、排水配管６の一端が接続されている。排水配管６の他端は、上部断熱材３ａに形成された排水通路上部４ａ内に位置するように取り付けられている。   Further, in order to guide the drainage from the component 5 to a drain drainage port 1h provided in the bottom case 1f, the drainage drain portion (drainage port) 5a of the component 5 has a structure shown in FIG. As shown in FIG. 1, one end of the drain pipe 6 is connected. The other end of the drain pipe 6 is attached so as to be positioned in the drain passage upper part 4a formed in the upper heat insulating material 3a.

図５は、本発明の実施の形態１に係る、排水通路の合わせ部分を示す概略図（Ａ）、および排水通路の上端側の端部受け部形状を示す概略図（Ｂ）である。図５（Ａ）に示すように、上部断熱材３ａにおける排水通路上部４ａの通路幅は、排水配管６の外径よりも大きな寸法となるように形成されている。これにより、上記構成部品５の排水ドレン部５ａから排水配管６を容易に導けるようになる。   FIG. 5 is a schematic diagram (A) showing the mating part of the drainage passage and a schematic diagram (B) showing the shape of the end receiving portion on the upper end side of the drainage passage according to Embodiment 1 of the present invention. As shown in FIG. 5A, the passage width of the drainage passage upper portion 4 a in the upper heat insulating material 3 a is formed to be larger than the outer diameter of the drainage pipe 6. Thereby, the drainage pipe 6 can be easily led from the drainage drain part 5a of the component 5 described above.

また、図５（Ａ）に示すように、上部断熱材３ａと左側部断熱材３ｂとの間での排水通路上部４ａと排水通路中部４ｂの合わせ部分において、上側となる上部断熱材３ａの排水通路上部４ａの流路断面が、下側となる左側部断熱材３ｂの排水通路中部４ｂの流路断面内に収まるように、両排水通路４ａ、４ｂの寸法が規定されている。更に、左側部断熱材３ｂと下部断熱材３ｄとの間での排水通路中部４ｂと排水通路下部４ｃの合わせ部分において、上側となる左側部断熱材３ｂの排水通路中部４ｂの流路断面が、下側となる下部断熱材３ｄの排水通路下部４ｃの流路断面内に収まるように、両排水通路４ｂ、４ｃの寸法が規定されている。このような構成によれば、貯湯タンク２の上部から貯湯タンク２の下方に向けて排水を確実に導くことが可能となる。   Further, as shown in FIG. 5 (A), the drainage of the upper heat insulating material 3a on the upper side in the joint portion of the drainage passage upper portion 4a and the drainage passage middle portion 4b between the upper heat insulating material 3a and the left side heat insulating material 3b. The dimensions of both drainage passages 4a and 4b are defined so that the passage cross section of the passage upper portion 4a is within the flow passage cross section of the drainage passage middle portion 4b of the left side heat insulating material 3b on the lower side. Further, in the joint portion of the drainage passage middle portion 4b and the drainage passage lower portion 4c between the left side heat insulating material 3b and the lower heat insulating material 3d, the flow path cross section of the drainage passage middle portion 4b of the left side heat insulating material 3b on the upper side is as follows. The dimensions of both drainage passages 4b and 4c are defined so as to be within the cross section of the drainage passage lower portion 4c of the lower heat insulating material 3d on the lower side. According to such a configuration, drainage can be reliably guided from the upper part of the hot water storage tank 2 toward the lower part of the hot water storage tank 2.

更に、図５（Ｂ）に示すように、上部断熱材３ａに形成された排水通路上部４ａの上端部が、上端側に広がるラッパ形状となるように形成されている。このような構成によれば、排水通路上部４ａに対して排水配管６からの排水をより容易に導くことが可能となる。   Further, as shown in FIG. 5B, the upper end portion of the drainage passage upper portion 4a formed in the upper heat insulating material 3a is formed in a trumpet shape that spreads to the upper end side. According to such a configuration, drainage from the drainage pipe 6 can be more easily guided to the drainage passage upper part 4a.

以上説明したように、本実施形態の貯湯式給湯機１０は、成形発泡断熱材３における上部断熱材３ａ、中部断熱材（左側部断熱材３ｂ）、および下部断熱材３ｄを連通するように形成された排水通路４を備え、貯湯タンク２の上部（給湯機本体上部）に設置された構成部品５の排水ドレン部５ａから排水通路上部４ａに排水配管６を導く構成を備えている。このような構成によれば、排水配管としては上記排水配管６を備えておくだけでよくなる。このため、給湯機本体上部に設置された構成部品のドレン部から給湯機本体下部まで排水配管を利用して排水を導くようにしていた従来の構成と比べ、排水経路の配管の短尺化が可能となる。また、排水経路を構成するために、給湯機上部から下部に至るまで発泡断熱材で覆われた貯湯タンクの外周に排水配管を引き回す必要がなくなり、組立作業性が容易となり、また部品コストの削減も可能となる。   As described above, the hot water storage type water heater 10 of the present embodiment is formed so as to communicate the upper heat insulating material 3a, the middle heat insulating material (left heat insulating material 3b), and the lower heat insulating material 3d in the molded foam heat insulating material 3. The drainage passage 4 is provided, and the drainage pipe 6 is led from the drainage drain part 5a of the component 5 installed in the upper part of the hot water storage tank 2 (upper part of the water heater main body) to the drainage passage upper part 4a. According to such a configuration, it is only necessary to provide the drain pipe 6 as the drain pipe. For this reason, the drainage pipes can be shortened compared to the conventional configuration in which drainage is led from the drain part of the components installed at the upper part of the water heater body to the lower part of the water heater body. It becomes. In addition, it is not necessary to route drainage pipes around the hot water storage tank covered with foam insulation from the upper part to the lower part of the water heater to configure the drainage path, making assembly work easier and reducing component costs. Is also possible.

ところで、上述した実施の形態１においては、成形発泡断熱材３の中部断熱材（左側部断熱材３ｂ）に対して直に形成された中空状の排水通路中部４ｂを備えるようにしている。しかしながら、本発明における流体通路（排水通路）の構成は、これに限定されるものではなく、例えば、以下の図６に示すような構成であってもよい。図６は、本発明の実施の形態１の変形例における中部断熱材（左側部断熱材）が備える流体通路構成用断熱材の構成を示す平面図（Ａ）および側面図（Ｂ）である。   By the way, in Embodiment 1 mentioned above, the hollow drainage channel | path center part 4b formed directly with respect to the center heat insulating material (left side heat insulating material 3b) of the shaping | molding foam heat insulating material 3 is provided. However, the configuration of the fluid passage (drainage passage) in the present invention is not limited to this, and may be, for example, a configuration as shown in FIG. FIG. 6 is a plan view (A) and a side view (B) showing the configuration of the heat insulating material for fluid passage constitution provided in the middle heat insulating material (left heat insulating material) in the modification of the first embodiment of the present invention.

図６に示す中部断熱材（左側部断熱材）７には、中空状の排水通路は形成されておらず、その代わりに、中部断熱材７の内周には、当該中部断熱材７の上端から下端に及ぶように溝状の切欠部７ａが形成されている。そして、当該切欠部７ａには、内部に中空状の排水通路中部４ｂが形成されるように流体通路構成用断熱材８が嵌め込まれている。このように、本発明における流体通路は、その周囲の断熱材（中部断熱材に限らない）と別部品で形成されたものであってもよい。また、このような図６に示す構成によれば、中部断熱材７の成形加工性を容易にすることができる。また、上述の構成を上部や下部の断熱材へ適用することもできる。   The middle heat insulating material (left side heat insulating material) 7 shown in FIG. 6 does not have a hollow drainage passage. Instead, the inner periphery of the middle heat insulating material 7 has an upper end of the middle heat insulating material 7. A groove-shaped notch 7a is formed so as to extend from to the lower end. And the heat insulating material 8 for fluid passage structure is engage | inserted by the said notch 7a so that the hollow drainage channel | path center part 4b may be formed inside. Thus, the fluid passage in the present invention may be formed of a separate part from the surrounding heat insulating material (not limited to the middle heat insulating material). Further, according to the configuration shown in FIG. 6, the moldability of the middle heat insulating material 7 can be facilitated. Moreover, the above-described configuration can be applied to the upper and lower heat insulating materials.

また、排水通路上部４ａの上端部、或いは排水通路下部４ｃの下端部に、排水配管６などの配管を接続するための接続部（図示省略）を備えるようにしてもよい。これにより、排水配管６などの接続を容易にすることができる。   Moreover, you may make it provide the connection part (illustration omitted) for connecting piping, such as the drainage piping 6, to the upper end part of the drainage channel upper part 4a, or the lower end part of the drainage channel lower part 4c. Thereby, connection of drainage piping 6 etc. can be made easy.

また、貯湯タンク２の上部に配置された上記構成部品５の排水ドレン部５ａを、上部断熱材３ａに形成された排水通路上部４ａの上端部の直上に配置するようにしてもよい。このような構成によって、上記排水ドレン部５ａを排水通路上部４ａの上端部に直接導けるようにすることで、排水配管６を廃止することが可能となる。また、同様に下部断熱材３ｄの排水通路下部４ｃの排水口を排水口１ｇの上になるように構成し、排水を排水口１ｇに直接排水するように構成してもよい。   Moreover, you may make it arrange | position the drainage drain part 5a of the said component 5 arrange | positioned at the upper part of the hot water storage tank 2 just above the upper end part of the drainage channel | path upper part 4a formed in the upper heat insulating material 3a. With such a configuration, the drainage pipe 6 can be eliminated by allowing the drainage drain portion 5a to be guided directly to the upper end of the drainage passage upper portion 4a. Similarly, the drain outlet of the drain passage lower part 4c of the lower heat insulating material 3d may be configured to be above the drain outlet 1g, and the drainage may be directly drained to the drain outlet 1g.

１ 外装ケース
１ｆ 底面ケース（ドレンパン）
１ｇ 排水口
１ｈ ドレン排水口
２ 貯湯タンク
３ 成形発泡断熱材
３ａ 上部断熱材
３ｂ 左側部断熱材（中部断熱材）
３ｃ 右側部断熱材（中部断熱材）
３ｄ 下部断熱材
４ 排水通路
４ａ 排水通路上部
４ｂ 排水通路中部
４ｃ 排水通路下部
５ 構成部品（圧力逃がし弁）
５ａ 排水ドレン部
６ 排水配管
７ 中部断熱材
７ａ 切欠部
８ 流体通路構成用断熱材
１０ 貯湯式給湯機 1 Exterior case 1f Bottom case (drain pan)
1 g Drain port 1 h Drain drain port 2 Hot water storage tank 3 Molded foam heat insulating material 3 a Upper heat insulating material 3 b Left side heat insulating material (middle heat insulating material)
3c Right side insulation (middle insulation)
3d Lower heat insulating material 4 Drain passage 4a Drain passage upper portion 4b Drain passage middle portion 4c Drain passage lower portion 5 Components (pressure relief valve)
5a Drain drain part 6 Drain pipe 7 Middle heat insulating material 7a Notch part 8 Heat insulating material for fluid passage configuration 10 Hot water storage type water heater

Claims (8)

湯を貯える貯湯タンクと、
前記貯湯タンクの上部を覆う上部断熱材と、前記貯湯タンクの胴体部分を覆う中部断熱材と、前記貯湯タンクの下部を覆う下部断熱材とを含み、前記貯湯タンクの周囲を覆う成形発泡断熱材と、
前記貯湯タンクの上部に配設され、前記貯湯タンク内の湯の圧力を逃がす際に開く圧力逃がし弁と、
前記上部断熱材、前記中部断熱材、および前記下部断熱材を連通するように形成され、前記圧力逃がし弁からの排水が流れる排水通路と、
一端が前記圧力逃がし弁の排水部に接続され、他端が前記上部断熱材に形成された前記排水通路内に位置するように取り付けられた排水配管と、
を備え、
前記上部断熱材における前記排水通路の通路幅は、前記排水配管の外径よりも大きな寸法となるように構成されていることを特徴とする貯湯式給湯機。 A hot water storage tank for storing hot water,
A molded foam heat insulating material covering the periphery of the hot water storage tank, including an upper heat insulating material covering an upper portion of the hot water storage tank, a middle heat insulating material covering a body portion of the hot water storage tank, and a lower heat insulating material covering a lower portion of the hot water storage tank and,
A pressure relief valve disposed at an upper portion of the hot water storage tank and opened when the hot water pressure in the hot water storage tank is released;
A drainage passage formed to communicate the upper thermal insulation, the middle thermal insulation, and the lower thermal insulation, and a drainage passage through which drainage from the pressure relief valve flows ;
A drainage pipe attached so that one end is connected to the drainage part of the pressure relief valve and the other end is located in the drainage passage formed in the upper heat insulating material;
With
The hot water storage type hot water heater is characterized in that a passage width of the drainage passage in the upper heat insulating material is configured to be larger than an outer diameter of the drainage pipe . 前記貯湯式給湯機は、前記貯湯タンクよりも下方に、前記圧力逃がし弁からの排水を受けるドレンパンを更に備え、
前記圧力逃がし弁からの排水が前記排水通路を通って前記ドレンパンに導かれるように構成されていることを特徴とする請求項１記載の貯湯式給湯機。 Before SL hot-water storage type water heater, lower than the hot water storage tank, further comprising a drain pan for receiving the waste water from the pressure relief valve,
The hot water storage type hot water heater according to claim 1, wherein drainage from the pressure relief valve is guided to the drain pan through the drainage passage. 前記圧力逃がし弁からの排水が前記排水通路を通って前記貯湯タンクの下方から外部に排出されるように構成されていることを特徴とする請求項１記載の貯湯式給湯機。 The hot water storage type hot water supply apparatus according to claim 1, wherein drainage from the pressure relief valve is configured to be discharged to the outside from below the hot water storage tank through the drainage passage. 前記上部断熱材と前記中部断熱材との間での前記排水通路の合わせ部分、および前記中部断熱材と前記下部断熱材との間での前記排水通路の合わせ部分のうちの少なくとも一方において、上側となる断熱材の排水通路断面が下側となる断熱材の排水通路断面内に収まるように、前記排水通路の寸法が規定されていることを特徴とする請求項２または３記載の貯湯式給湯機。 In at least one of the mating part of the drainage passage between the upper thermal insulation and the middle thermal insulation and the mating part of the drainage passage between the middle thermal insulation and the lower thermal insulation, the upper side and so as drainage passage section of the heat insulating material is fit in the drainage passage cross section of the insulation material to be lower, hot water storage type hot water supply according to claim 2 or 3, wherein the dimensions of the drain passage is defined Machine. 前記上部断熱材に形成された前記排水通路の上端部が、上端側に広がるラッパ形状になっていることを特徴とする請求項２〜４のいずれかに記載の貯湯式給湯機。 The hot water storage type hot water heater according to any one of claims 2 to 4, wherein an upper end portion of the drainage passage formed in the upper heat insulating material has a trumpet shape that extends toward the upper end side. 前記上部断熱材に形成された前記排水通路の上端部に、前記排水配管を接続するための接続部が設けられていることを特徴とする請求項２〜５のいずれかに記載の貯湯式給湯機。 The end portion on the drain passage formed in the upper insulation, hot-water storage type according to any one of claims 2-5, characterized in that the connection for connecting the drain pipe is provided Water heater. 前記圧力逃がし弁の前記排水部が、前記上部断熱材に形成された前記排水通路の上端部の直上に配置されていることを特徴とする請求項２〜５のいずれかに記載の貯湯式給湯機。 The hot water storage type hot water supply according to any one of claims 2 to 5, wherein the drainage portion of the pressure relief valve is disposed immediately above an upper end portion of the drainage passage formed in the upper heat insulating material. Machine. 前記排水通路は、その周囲の断熱材と別部品で形成されていることを特徴とする請求項１〜７のいずれかに記載の貯湯式給湯機。 The hot water storage type hot water heater according to any one of claims 1 to 7, wherein the drainage passage is formed of a separate part from the surrounding heat insulating material.
JP2009265200A 2009-11-20 2009-11-20 Hot water storage water heater Expired - Fee Related JP5423344B2 (en)

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