JP6218654B2 - Hot water storage tank unit and manufacturing method thereof - Google Patents

Hot water storage tank unit and manufacturing method thereof Download PDF

Info

Publication number
JP6218654B2
JP6218654B2 JP2014055508A JP2014055508A JP6218654B2 JP 6218654 B2 JP6218654 B2 JP 6218654B2 JP 2014055508 A JP2014055508 A JP 2014055508A JP 2014055508 A JP2014055508 A JP 2014055508A JP 6218654 B2 JP6218654 B2 JP 6218654B2
Authority
JP
Japan
Prior art keywords
hot water
storage tank
water storage
outer box
heat insulating
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.)
Active
Application number
JP2014055508A
Other languages
Japanese (ja)
Other versions
JP2015178912A5 (en
JP2015178912A (en
Inventor
伏木　隆之
隆之 伏木
北村　哲也
哲也 北村
祐之 山▲崎▼
祐之 山▲崎▼
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.)
Hitachi Appliances Inc
Original Assignee
Hitachi Appliances Inc
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 Hitachi Appliances Inc filed Critical Hitachi Appliances Inc
Priority to JP2014055508A priority Critical patent/JP6218654B2/en
Priority to CN201410406733.5A priority patent/CN104930709A/en
Publication of JP2015178912A publication Critical patent/JP2015178912A/en
Publication of JP2015178912A5 publication Critical patent/JP2015178912A5/ja
Application granted granted Critical
Publication of JP6218654B2 publication Critical patent/JP6218654B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

本発明は、貯湯タンクユニットおよびその製造方法に関する。   The present invention relates to a hot water storage tank unit and a manufacturing method thereof.

従来の貯湯タンクユニットとして、貯湯タンクの周囲を複数の成形断熱材で覆い、成形
断熱材の周囲を外装ケースで覆うものが提案されている（特許文献１参照）。また、貯湯
タンクユニットとして、貯湯タンクの周囲を真空断熱材などの断熱材で覆うものが提案さ
れている（特許文献２参照）。 A conventional hot water storage tank unit has been proposed in which the hot water storage tank is covered with a plurality of molded heat insulating materials and the molded heat insulating material is covered with an exterior case (see Patent Document 1). In addition, a hot water storage tank unit has been proposed in which the hot water storage tank is covered with a heat insulating material such as a vacuum heat insulating material (see Patent Document 2).

特開２０１１−１０６７９１号公報JP 2011-106791 A 特許第４７４５２６９号公報Japanese Patent No. 4745269

しかしながら、特許文献１に記載の成形断熱材では、必ずしも断熱性能が良好とは言えない。
そこで、特許文献２に記載のように、真空断熱材を併用する技術が開発されている。 However, the molded heat insulating material described in Patent Document 1 cannot always be said to have good heat insulating performance.
Therefore, as described in Patent Document 2, a technique of using a vacuum heat insulating material in combination has been developed.

しかし、真空断熱材と成形断熱材とを併用した場合、真空断熱材が貯湯タンクの高熱により劣化するおそれがあるため、真空断熱材を貯湯タンクに密着させることができず、例えば貯湯タンクと真空断熱材との間に隙間を生じさせる場合、熱漏洩を十分に防ぐことができないという問題がある。   However, when a vacuum heat insulating material and a molded heat insulating material are used in combination, the vacuum heat insulating material may deteriorate due to the high heat of the hot water storage tank, so the vacuum heat insulating material cannot be brought into close contact with the hot water storage tank. In the case where a gap is generated between the heat insulating material and the heat insulating material, there is a problem that heat leakage cannot be sufficiently prevented.

本発明は前記従来の問題を解決するものであり、高い断熱性能を備えるとともに、低コストの貯湯タンクユニットおよびその製造方法を提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and has an object to provide a low-cost hot water storage tank unit and a method for manufacturing the same while having high heat insulation performance.

本発明は、加熱された温水が貯留される貯湯タンクと、前記貯湯タンクを内部に収容する外箱と、前記外箱の底板の内側に固定され、前記貯湯タンクを支持する内脚が支持された平板状の支持部材と、前記貯湯タンクと、ねじが留められた前記支持部材を有する前記外箱との間に形成された発泡断熱材と、前記発泡断熱材が形成された前記外箱の下部の前記支持部材に、前記ねじを用いて取り付けられ、貯湯タンクユニットを支持する第１外脚とを備え、前記支持部材は、前記内脚の前記底板に対向する領域および前記第１外脚の前記底板に対向する領域より大きく、前記底板には前記支持部材が当接される平面部が形成されている。 The present invention includes a hot water storage tank in which heated hot water is stored, an outer box that accommodates the hot water storage tank therein, and an inner leg that is fixed to an inner side of a bottom plate of the outer box and supports the hot water storage tank. and a plate-shaped support member, wherein the hot water storage tank, and foam insulation that is made form between said outer box having the support member screw is fastened, the outer box, wherein the foam insulation is formed A first outer leg attached to the lower support member using the screw and supporting the hot water storage tank unit, and the support member includes a region facing the bottom plate of the inner leg and the first outer leg. A flat portion on which the support member abuts is formed on the bottom plate, which is larger than a region of the leg facing the bottom plate .

本発明によれば、高い断熱性能を備えた貯湯タンクユニットおよびその製造方法を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the hot water storage tank unit provided with the high heat insulation performance and its manufacturing method can be provided.

実施形態に係る貯湯タンクユニットを備えた給湯器を示す全体構成図。The whole block diagram which shows the water heater provided with the hot water storage tank unit which concerns on embodiment. 貯湯タンクユニットを下方から見た斜視図。The perspective view which looked at the hot water storage tank unit from the downward direction. 貯湯タンクユニットを略水平面で切断した横断面図。The cross-sectional view which cut | disconnected the hot water storage tank unit at the substantially horizontal surface. （ａ）は、貯湯タンクと外箱との間に発泡断熱材を充填する状態を示す貯湯タンクユニットの側方からの透視図、（ｂ）は左側面の側方からの透視図。(A) is the perspective view from the side of the hot water storage tank unit which shows the state which fills a foam heat insulating material between a hot water storage tank and an outer case, (b) is the perspective view from the side of the left side. 発泡断熱材の充填方法の一例を示す外箱と貯湯タンクの側方からの透視図、(ａ)は発泡断熱材の充填中を示す図、(ｂ)は発泡断熱材の充填終了時を示す図。A perspective view from the side of the outer box and hot water storage tank showing an example of the filling method of the foam insulation material, (a) is a diagram showing the filling of the foam insulation material, (b) shows the end of filling of the foam insulation material Figure. 比較例の発泡断熱材が発泡時の外箱に取り付けられた外脚の周りを示す概念図。The conceptual diagram which shows the circumference | surroundings of the outer leg attached to the outer box at the time of foaming heat insulating material of a comparative example. 実施形態の発泡断熱材が発泡時の外箱の外脚の取り付け箇所近傍を示す概念図。The conceptual diagram which shows the attachment location vicinity of the outer leg of the outer case at the time of the foam heat insulating material of embodiment foaming. (ａ)〜(ｅ)は第１の方法の発泡断熱材の充填時の外箱の外脚の取り付け箇所付近での作業工程を示す図。(a)-(e) is a figure which shows the operation | work process in the attachment location vicinity of the outer leg of the outer case at the time of filling with the foam heat insulating material of the 1st method. (ａ)〜(ｅ)は第２の方法の発泡断熱材の充填時の外箱の外脚の取り付け箇所付近での作業工程を示す図。(a)-(e) is a figure which shows the operation | work process in the attachment location vicinity of the outer leg of the outer case at the time of filling with the foaming heat insulating material of a 2nd method. 上板の中央部に切り欠き部を形成した外脚を下方から見た斜視図。The perspective view which looked at the outer leg which formed the notch part in the center part of the upper board from the downward direction. (ａ)〜(ｅ)は第３の方法の発泡断熱材の充填時の外箱の外脚の取り付け箇所付近での作業工程を示す概念図。(a)-(e) is a conceptual diagram which shows the work process in the attachment location vicinity of the outer leg of the outer case at the time of filling with the foaming heat insulating material of the 3rd method. 第４の方法の外箱の底板ｅに外脚を取り付けた状態を示す概念図。The conceptual diagram which shows the state which attached the outer leg to the baseplate e of the outer box of the 4th method. 第５の方法の外箱の底板に抑え板治具を取り付けて発泡断熱材が充填している状態を示す貯湯タンクユニットを斜め下方から見た斜視図。The perspective view which looked at the hot water storage tank unit which shows the state which attached the restraint board jig | tool to the baseplate of the outer box of the 5th method, and has filled the foam heat insulating material from diagonally downward. 第５の方法の発泡断熱材６の充填時の外箱３の外脚７の取り付け箇所付近での作業工程を示す概念図。The conceptual diagram which shows the work process in the attachment location vicinity of the outer leg 7 of the outer case 3 at the time of filling with the foaming insulation 6 of the 5th method. 第６の方法の発泡断熱材６の充填時の外箱３の外脚７の取り付け箇所付近での作業工程を示す概念図。The conceptual diagram which shows the work process in the attachment location vicinity of the outer leg 7 of the outer case 3 at the time of filling with the foam heat insulating material 6 of the 6th method. 変形例の発泡断熱材の充填充填作業例を示す概要図。The schematic diagram which shows the example of filling and filling work of the foam heat insulating material of a modification. 貯湯タンクユニットを斜め上方から見た外箱内に収容される貯湯タンクの透視斜視図。The perspective view of the hot water storage tank accommodated in the outer box which looked at the hot water storage tank unit from diagonally upward.

以下、本発明の実施形態について添付図面を参照して説明する。
図１は、実施形態に係る貯湯タンクユニットを備えた給湯器を示す全体構成図である。なお、図２以降では、貯湯タンクに接続される配管の図示を省略して示している。
実施形態の貯湯タンクユニット１を備えた給湯機Ｋについて、説明する。
給湯機Ｋは、低温水を加熱して温水(お湯)を作るヒートポンプユニット１０と、該温水を貯留して供給する貯湯タンクユニット１とを備え構成されている。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an overall configuration diagram showing a water heater provided with a hot water storage tank unit according to an embodiment. In FIG. 2 and subsequent figures, illustration of piping connected to the hot water storage tank is omitted.
The hot water heater K provided with the hot water storage tank unit 1 of the embodiment will be described.
The water heater K includes a heat pump unit 10 that heats low-temperature water to produce hot water (hot water), and a hot water storage tank unit 1 that stores and supplies the hot water.

貯湯タンクユニット１は、温水を貯める貯湯タンク２、貯湯タンク２を覆う外箱３、および貯湯タンク２を断熱する発泡断熱材６(図３参照)を備えている。
貯湯タンク２の下部には、低温水(水道水などの水)が導入される給水管１１が接続されている。貯湯タンク２内の下部の低温水は、図示しないポンプＰによってヒートポンプ往き管１２を介してヒートポンプユニット１０に導入される。ヒートポンプユニット１０で加熱され高温となった温水は、ヒートポンプ戻り管１３を通って貯湯タンク２の上部に導入される。 The hot water storage tank unit 1 includes a hot water storage tank 2 that stores hot water, an outer box 3 that covers the hot water storage tank 2, and a foam heat insulating material 6 that insulates the hot water storage tank 2 (see FIG. 3).
A water supply pipe 11 into which low-temperature water (water such as tap water) is introduced is connected to the lower part of the hot water storage tank 2. The lower temperature water in the hot water storage tank 2 is introduced into the heat pump unit 10 via the heat pump forward pipe 12 by a pump P (not shown). Hot water heated to a high temperature by the heat pump unit 10 is introduced into the upper part of the hot water storage tank 2 through the heat pump return pipe 13.

貯湯タンク２は、例えば、ステンレス鋼などの材料を用いて、円筒形状の胴板２ａ、胴板２ａの上部開口を覆う略お椀状の曲率をもった曲面形状の上部鏡板２ｂ、胴板２ａの下部開口を覆う略お椀状の曲率をもった曲面形状の下部鏡板２ｃの３部材を溶接して連結し構成されている。   The hot water storage tank 2 is made of, for example, a cylindrical body plate 2a, a curved upper plate 2b having a substantially bowl-shaped curvature covering the upper opening of the body plate 2a, and a body plate 2a using a material such as stainless steel. Three members of a curved lower end plate 2c having a substantially bowl-shaped curvature covering the lower opening are connected by welding.

貯湯タンク２内の温水の温度は、下方から上方にいくにしたがって高くなる。すなわち、貯湯タンク２内の下部から上部にかけて、低温、中温、高温の温度分布の温水(または水)となっている。そこで、貯湯タンク２の外面には、鉛直方向に、貯湯タンク２内の温水または水の温度を測る温度センサ５(５ａ、５ｂ、５ｃ、５ｄ)(図１７参照)が鉛直方向に間隔をおいて複数設けられている。温度センサ５としては、例えばサーミスタが用いられる。   The temperature of the hot water in the hot water storage tank 2 increases as it goes from below to above. That is, from the lower part to the upper part in the hot water storage tank 2, the hot water (or water) has a low temperature, medium temperature, and high temperature distribution. Therefore, on the outer surface of the hot water storage tank 2, a temperature sensor 5 (5a, 5b, 5c, 5d) (see FIG. 17) for measuring the temperature of the hot water or the water in the hot water storage tank 2 is vertically spaced. And there are multiple. For example, a thermistor is used as the temperature sensor 5.

＜ヒートポンプユニット１０＞
ヒートポンプユニット１０は、貯湯タンク２から取り出した水(低温水)を高温の温水に加熱するものであり、例えば、冷媒（例えば、二酸化炭素）を圧縮して高温・高圧にする圧縮機と、圧縮機から吐出された冷媒を凝縮させるとともに貯湯タンク２からの水と熱交換することによって水を凝縮熱で加熱する凝縮器と、凝縮器からの冷媒を減圧する減圧弁と、大気中の熱を吸熱して減圧した冷媒を蒸発させる蒸発器とを備えて構成されている。 <Heat pump unit 10>
The heat pump unit 10 heats water (low-temperature water) taken out from the hot water storage tank 2 to high-temperature hot water. For example, a compressor that compresses refrigerant (for example, carbon dioxide) to high temperature and high pressure, A condenser that condenses the refrigerant discharged from the machine and exchanges heat with water from the hot water storage tank 2 to heat the water with condensation heat, a pressure reducing valve that depressurizes the refrigerant from the condenser, and heat in the atmosphere. And an evaporator that evaporates the refrigerant that has absorbed heat and reduced pressure.

貯湯タンク２の上部から取り出された温水(湯)は、給湯管１４を通り混合弁(図示せず)に送られ、給水管１１から分岐した分岐給水管(図示せず)からの水と、混合弁で混合され所望温度の温水にされた後、給湯管１７を通って給湯端末１８から給湯される。   Hot water (hot water) taken out from the upper part of the hot water storage tank 2 is sent to the mixing valve (not shown) through the hot water supply pipe 14, and water from a branched water supply pipe (not shown) branched from the water supply pipe 11; After being mixed by a mixing valve and heated to a desired temperature, hot water is supplied from a hot water supply terminal 18 through a hot water supply pipe 17.

＜外箱３＞
外箱３は、内部に貯湯タンク２を収容し、貯湯タンク２の保護、断熱などを目的に供されるものであり、防錆処理がされたかまたは防錆性を持つ薄い鋼板で構成されている。
外箱３は、貯湯タンク２の前方に位置する前板３ａ（図１参照）、側方に位置する側板３ｂ，３ｂ、後方に位置する後板３ｃ、上方に位置する上板３ｄおよび下方に位置する底板３ｅによって縦長の箱状に構成されている。前板３ａ、側板３ｂ，３ｂ、後板３ｃ、上板３ｄ、底板３ｅは、必要箇所が嵌合、ボルト締めなどで接合され、外箱３が形成されている。 <Outer box 3>
The outer box 3 houses the hot water storage tank 2 and is provided for the purpose of protecting the hot water storage tank 2 and heat insulation. The outer box 3 is made of a thin steel plate that has been rust-proofed or has anti-rust properties. Yes.
The outer box 3 includes a front plate 3a (see FIG. 1) positioned in front of the hot water storage tank 2, side plates 3b and 3b positioned on the side, a rear plate 3c positioned on the rear, an upper plate 3d positioned on the upper side, and a lower side. The bottom plate 3e is formed into a vertically long box shape. The front plate 3a, the side plates 3b and 3b, the rear plate 3c, the upper plate 3d, and the bottom plate 3e are joined together by fitting, bolting, or the like to form the outer box 3.

外箱３の前方（正面側）には、配管カバー３ｓが設けられている。配管カバー３ｓは、ヒートポンプユニット１０から貯湯タンク２に向かうヒートポンプ戻り管１３、分岐給水管、混合弁、減圧弁などを収容して覆い、外部空間から保護している。   A pipe cover 3s is provided in front of the outer box 3 (front side). The piping cover 3s houses and covers a heat pump return pipe 13, a branch water supply pipe, a mixing valve, a pressure reducing valve, and the like from the heat pump unit 10 toward the hot water storage tank 2, and protects it from the external space.

貯湯タンク２の下部には、３本の内脚２ｄが固定されている。貯湯タンク２は、３本の内脚２ｄが外箱３の底板３ａの外側に取り付けられる外脚７に固定され支持されている。内脚２ｄおよび外脚７の数は、それぞれ３つ以上であってもよいが、３つの内脚２ｄ、３つの外脚７の場合、３つの外脚７により貯湯タンクユニット１を設置する一つの平面が定まり貯湯タンク２が最も安定する。そのため、３つの内脚２ｄ、外脚７が最も望ましい。   Three inner legs 2 d are fixed to the lower part of the hot water storage tank 2. The hot water storage tank 2 has three inner legs 2d fixed to and supported by outer legs 7 attached to the outside of the bottom plate 3a of the outer box 3. The number of inner legs 2d and outer legs 7 may be three or more, but in the case of three inner legs 2d and three outer legs 7, one hot water tank unit 1 is installed by three outer legs 7. Two planes are determined and the hot water storage tank 2 is most stable. Therefore, the three inner legs 2d and the outer legs 7 are most desirable.

＜外箱３の外脚７＞
図２は、貯湯タンクユニット１を下方から見た斜視図である。
貯湯タンクユニット１の外箱３の下面を成す底板３ｅには、複数の外脚７が外箱３内の貯湯タンク２を支持する内脚２ｄにボルトｂ１などにより固定されている。
そのため、外脚７における外箱３の底板３ｅに当接する上板７ａには、ボルトｂ１が挿通する取り付け穴７ａ１が設けられている。 <Outer leg 7 of outer box 3>
FIG. 2 is a perspective view of the hot water storage tank unit 1 as viewed from below.
A plurality of outer legs 7 are fixed to an inner leg 2d that supports the hot water storage tank 2 in the outer box 3 by bolts b1 or the like on a bottom plate 3e that forms the lower surface of the outer case 3 of the hot water tank unit 1.
Therefore, an attachment hole 7a1 into which the bolt b1 is inserted is provided in the upper plate 7a that contacts the bottom plate 3e of the outer box 3 in the outer leg 7.

一方、外脚７の貯湯タンクユニット１の設置箇所Ｇの基礎(一般的にコンクリートで養生した土台)に当接する下板７ｂには、基礎への固定用のアンカーボルトが挿通する取り付け穴７ｂ１が設けられている。   On the other hand, an attachment hole 7b1 through which an anchor bolt for fixing to the foundation is inserted is formed in the lower plate 7b that abuts the foundation (generally a foundation cured with concrete) of the installation location G of the hot water storage tank unit 1 of the outer leg 7. Is provided.

＜貯湯タンク２と外箱３との間の発泡断熱材６＞
図３は、貯湯タンクユニットを略水平面で切断した横断面図である。
図３においてドット表示で示すように、貯湯タンク２と外箱３との間の隙間のスペースｓ１には発泡性の断熱材である発泡断熱材６が充填されている。 <Foam insulation 6 between the hot water storage tank 2 and the outer box 3>
FIG. 3 is a cross-sectional view of the hot water storage tank unit cut along a substantially horizontal plane.
As shown by dot display in FIG. 3, the space s <b> 1 between the hot water storage tank 2 and the outer box 3 is filled with a foam heat insulating material 6 that is a foam heat insulating material.

発泡性の断熱材(発泡断熱材６)は、貯湯タンク２と外箱３との間に、液状の発泡性の断熱材を充填し、充填後に発泡させることで構成されるものである。発泡断熱材６としては、例えば、硬質ポリウレタンフォームが用いられる。この硬質ポリウレタンフォームは、ポリオール成分とイソシアネート成分の２つのウレタン原液を、発泡剤、触媒、整泡剤の存在下で反応させることにより得られるものである。発泡剤としては、シクロペンタン、水、炭酸ガスなどである。なお、発泡断熱材６は、硬質ポリウレタンフォーム以外のものを用いてもよい。   The foamable heat insulating material (foamed heat insulating material 6) is configured by filling a liquid foamable heat insulating material between the hot water storage tank 2 and the outer box 3, and foaming after filling. As the foam heat insulating material 6, for example, a rigid polyurethane foam is used. This rigid polyurethane foam is obtained by reacting two urethane stock solutions of a polyol component and an isocyanate component in the presence of a foaming agent, a catalyst, and a foam stabilizer. Examples of the foaming agent include cyclopentane, water, and carbon dioxide gas. In addition, you may use things other than a rigid polyurethane foam for the foam heat insulating material 6. FIG.

このように、貯湯タンク２と外箱３との間に隙間のスペースｓ１を設け、スペースｓ１に断熱材の発泡断熱材６を充填することで、貯湯タンク２内の温水の熱が、外箱３の外部空間に漏洩するのを抑制している。   Thus, by providing the space s1 between the hot water storage tank 2 and the outer box 3 and filling the space s1 with the foamed heat insulating material 6 as a heat insulating material, the heat of the hot water in the hot water storage tank 2 is changed to the outer box. 3 is suppressed from leaking into the external space.

＜貯湯タンク２と外箱３との間の発泡断熱材６の充填＞
図４（ａ）は、貯湯タンク２と外箱３との間に発泡断熱材６を充填する状態を示す貯湯タンクユニットの側方からの透視図であり、図４（ｂ）は、左側面の側方からの透視図である。
貯湯タンク２と外箱３との間の空間に発泡断熱材６を充填する場合、配管カバー３ｓ（図１参照）を取り付ける前の状態において、図４（ａ）に示すように、貯湯タンク２を収容した外箱３Ａを水平方向に寝かせ(倒し)、配管カバー３ｓ（図３参照）が取り付けられる前板３ａの側を上向きに、外箱Ａの設置時の上下方向が水平方向になる状態にする。 <Filling of foam insulation 6 between hot water storage tank 2 and outer box 3>
4 (a) is a perspective view from the side of the hot water storage tank unit showing a state in which the foamed heat insulating material 6 is filled between the hot water storage tank 2 and the outer box 3, and FIG. 4 (b) is a left side view. It is a perspective view from the side.
When filling the space between the hot water storage tank 2 and the outer box 3 with the foam heat insulating material 6, as shown in FIG. 4A, the hot water storage tank 2 in a state before the pipe cover 3 s (see FIG. 1) is attached. 3A in which the outer box 3A in which the pipe cover 3s (see FIG. 3) is attached faces upward, and the vertical direction when the outer box A is installed is horizontal. To.

そのため、外箱３の前板３ａには、発泡断熱材６を充填する際の入口となる充填口３ａ１，３ａ２が形成されている。外箱３の充填口３ａ１は、外箱３の下部の底板３ｅ側に形成され、外箱３の充填口３ａ２は、外箱３の上部の上板３ｄｅ側に形成されている。   Therefore, the front plate 3a of the outer box 3 is formed with filling ports 3a1 and 3a2 that serve as inlets when the foam heat insulating material 6 is filled. The filling port 3 a 1 of the outer box 3 is formed on the bottom plate 3 e side of the lower portion of the outer box 3, and the filling port 3 a 2 of the outer box 3 is formed on the upper plate 3 de side of the upper portion of the outer box 3.

充填口３ａ１，３ａ２が、外箱３の前板３ａに形成されることにより、最終的には(貯湯タンクユニット１の状態では)前板３ａが配管カバー３ｓに覆われるので、充填口３ａ１，３ａ２の開口が風雨に晒されることがない。そのため、充填口３ａ１，３ａ２は、前板３ａに形成されることが最も好ましい。   By forming the filling ports 3a1 and 3a2 on the front plate 3a of the outer box 3, the front plate 3a is finally covered with the pipe cover 3s (in the state of the hot water tank unit 1). The opening of 3a2 is not exposed to wind and rain. Therefore, it is most preferable that the filling ports 3a1 and 3a2 are formed in the front plate 3a.

図５は、発泡断熱材の充填方法の一例を示す外箱と貯湯タンクの側方からの透視図であり、図５(ａ)は発泡断熱材の充填中を示し、図５(ｂ)は発泡断熱材の充填終了時を示す。なお、図５に示す上下方向および前後方向の矢印は、貯湯タンク２の向きを示している。   FIG. 5 is a perspective view from the side of the outer box and hot water storage tank showing an example of a method of filling the foam insulation, FIG. 5 (a) shows the filling of the foam insulation, and FIG. 5 (b) The end of filling with the foam insulation is shown. 5 indicate the direction of the hot water storage tank 2.

発泡断熱材６の発泡時、外箱３は発泡断熱材６から内圧を受けて膨らむこととなる。そこで、図５(ａ)に示すように、外箱３を寝かせた(倒した)状態において、外箱３の外面に密着させてその周囲を発泡管理治具（やとい、ともいう）３０で覆う（図５（ａ）の二点鎖線参照）。   When the foam heat insulating material 6 is foamed, the outer box 3 is swelled by receiving an internal pressure from the foam heat insulating material 6. Therefore, as shown in FIG. 5 (a), in the state where the outer box 3 is laid down (tilted), it is brought into close contact with the outer surface of the outer box 3 and the periphery thereof is surrounded by a foam management jig (also referred to as yato) 30. Cover (see the two-dot chain line in FIG. 5A).

発泡管理治具３０は、発泡断熱材６の発泡時の発泡断熱材６の発泡による内圧に抗するため、外箱３の周囲全体を取り囲んで前板３ａ、側板３ｂ，３ｂ、後板３ｃ、上板３ｄ、底板３ｅのすべてを変形しないように内方に向けて押し付ける板状の治具を備えている。
そして、発泡管理治具３０(以下、やとい３０と称す)の外側から、ノズル(図示せず)を充填口３ａ１、３ａ２に挿入し、充填口３ａ１、３ａ２から液状の発泡断熱材６を注入する。
そして、発泡断熱材６の注入が完了すると、図５(ｂ)に示すように、発泡断熱材６が発泡して上昇して外箱３と貯湯タンク２との間の隙間のスペースｓ１が満たされる。 The foam management jig 30 surrounds the entire periphery of the outer box 3 in order to withstand the internal pressure due to foaming of the foam heat insulating material 6 when the foam heat insulating material 6 is foamed, and the front plate 3a, side plates 3b and 3b, rear plate 3c, A plate-like jig that presses the upper plate 3d and the bottom plate 3e inward so as not to be deformed is provided.
Then, a nozzle (not shown) is inserted into the filling ports 3a1 and 3a2 from the outside of the foam management jig 30 (hereinafter referred to as “yaito 30”), and the liquid foam heat insulating material 6 is injected from the filling ports 3a1 and 3a2. To do.
And when injection | pouring of the foam heat insulating material 6 is completed, as shown in FIG.5 (b), the foam heat insulating material 6 foams and raises, and the space s1 of the clearance gap between the outer case 3 and the hot water storage tank 2 is satisfy | filled. It is.

発泡に際して、外箱３は、発泡断熱材６から大きな内圧を受けることなる。
図６は、比較例の発泡断熱材が発泡時の外箱に取り付けられた外脚の周りを示す概念図である。 During foaming, the outer box 3 receives a large internal pressure from the foam heat insulating material 6.
FIG. 6 is a conceptual diagram showing the periphery of the outer leg attached to the outer box when the foam heat insulating material of the comparative example is foamed.

図６に示すように、外箱１０３に外脚１０７を取り付けた状態で、発泡断熱材１０６ｈを、外箱１０３と貯湯タンク１０１との間の隙間のスペースｓ１０１に充填する場合、外箱１０３の底板１０３ｅに外脚７が取り付けられた状態で行われる。そのため、やとい１３０の形状が複雑化することから、やとい１３０は、やとい１３０ａとやとい１３０ｂとに分割される。   As shown in FIG. 6, when the foam insulating material 106 h is filled into the space s 101 in the gap between the outer box 103 and the hot water storage tank 101 with the outer legs 107 attached to the outer box 103, This is performed with the outer legs 7 attached to the bottom plate 103e. For this reason, since the shape of the fast 130 is complicated, the fast 130 is divided into the quick 130a and the quick 130b.

例えば、側板１０３ｂにはやとい１３０ａが突き当てられ、底板１０３ｅにはやとい１３０ｂが突き当てられる。底板１０３ｅに突き当てられるやとい１３０ｂには、外脚１０７の逃げとなる凹部である逃げ部１３０ｂ１が形成される。
そのため、やとい１３０ｂでは、外脚１０７近傍の底板１０３ｅを抑えることができない。 For example, the quick plate 130a is abutted against the side plate 103b, and the quick plate 130b is abutted against the bottom plate 103e. As soon as it is abutted against the bottom plate 103e, a relief portion 130b1 is formed as a recess that allows the outer leg 107 to escape.
For this reason, the short plate 130b cannot suppress the bottom plate 103e in the vicinity of the outer leg 107.

従って、発泡時の発泡断熱材１０６ｈの内圧により、底板１０３ｅと前板１０３ａ、側板１０３ｂ、後板１０３ｃ間の接合箇所から発泡時の発泡断熱材１０６ｈが漏出する場合がある。
また、外箱１０３の底板１０３ｅに外脚１０７を取り付けた状態で発泡断熱材１０６ｈの充填作業を行う場合、やとい１３０ａ、１３０ｂの構成が複雑になるという問題がある。 Therefore, the foamed heat insulating material 106h at the time of foaming may leak from the joint portion between the bottom plate 103e, the front plate 103a, the side plate 103b, and the rear plate 103c due to the internal pressure of the foamed heat insulating material 106h at the time of foaming.
In addition, when the filling operation of the foam heat insulating material 106h is performed in a state where the outer legs 107 are attached to the bottom plate 103e of the outer box 103, there is a problem that the configuration of the 130a and 130b is complicated.

その対策として、実施形態の貯湯タンクユニット１では、図７に示す発泡断熱材６が漏出しない方法で、発泡断熱材６の発泡を行っている。図７は、実施形態の発泡断熱材が発泡時の外箱の外脚の取り付け箇所近傍を示す概念図である。
図７に示すように、実施形態の貯湯タンクユニット１では、発泡断熱材６を外箱３と貯湯タンク１との間の隙間のスペースｓ１に充填する際、外脚７を外箱３の底板３ｅに取り付けない状態で、充填作業を行っている。 As a countermeasure, in the hot water storage tank unit 1 of the embodiment, the foam heat insulating material 6 is foamed by a method in which the foam heat insulating material 6 shown in FIG. 7 does not leak. FIG. 7 is a conceptual diagram showing the vicinity of the location where the outer leg of the outer box is attached when the foamed heat insulating material of the embodiment is foamed.
As shown in FIG. 7, in the hot water storage tank unit 1 of the embodiment, when the foamed heat insulating material 6 is filled into the space s <b> 1 between the outer box 3 and the hot water storage tank 1, the outer leg 7 is the bottom plate of the outer box 3. The filling work is performed without attaching to 3e.

これにより、外箱３の底板３ｅにおける外脚７の取り付け箇所付近に、外箱３とやとい３０ｃとの隙間ができず、外箱３の底板３ｅにおける外脚７の取り付け箇所付近を、空き空間を生ずることなく、やとい３０ｄで外側から確実に抑えることができる。
また、外箱３の底板３ｅにおける外脚７の取り付け箇所付近が単純な形状になるので、やとい３０ｃの形状が単純で済み、コスト削減を図ることができる。 As a result, there is no gap between the outer box 3 and the heel 30c in the vicinity of the mounting position of the outer leg 7 on the bottom plate 3e of the outer box 3, and the vicinity of the mounting position of the outer leg 7 on the bottom plate 3e of the outer box 3 is empty. Without any space, it can be reliably suppressed from the outside in 30d.
In addition, since the vicinity of the portion where the outer leg 7 is attached to the bottom plate 3e of the outer box 3 has a simple shape, the shape of the short 30c is simple, and cost can be reduced.

＜発泡断熱材６の充填時の外箱３の外脚７の取り付け箇所付近での作業工程＞
以下、具体的に、実施形態の貯湯タンクユニット１の発泡断熱材６の充填作業を、以下説明する。
外箱３と貯湯タンク１との間の隙間のスペースｓ１に発泡断熱材６を充填する際の外箱３の外脚７の取り付け箇所付近での作業工程は次のように遂行される。
上述した如く、貯湯タンクユニット１での外箱３と貯湯タンク２との間への発泡断熱材６の充填は、外箱３に外脚７を取り付けない状態で行われるという特徴がある。 <Working process in the vicinity of the location where the outer leg 7 of the outer box 3 is filled when the foam insulation 6 is filled>
Hereinafter, the filling operation of the foam heat insulating material 6 of the hot water storage tank unit 1 of the embodiment will be specifically described below.
The work process in the vicinity of the mounting position of the outer leg 7 of the outer box 3 when filling the space s1 in the gap between the outer box 3 and the hot water storage tank 1 with the foam heat insulating material 6 is performed as follows.
As described above, the foamed heat insulating material 6 is filled in the hot water storage tank unit 1 between the outer box 3 and the hot water storage tank 2 without the outer legs 7 attached to the outer box 3.

＜第１の方法＞
図８(ａ)〜(ｅ)は、第１の方法の発泡断熱材の充填時の外箱の外脚の取り付け箇所付近での作業工程を示す図である。
第１の方法では、まず、図８(ａ)に示すように、外箱３の内部で貯湯タンク２を支持する内脚２ｄの支持部材２ｅを外脚７の底板３ｅの外脚７の取り付け箇所に位置決めする。 <First method>
FIGS. 8A to 8E are diagrams showing work steps in the vicinity of the location where the outer leg of the outer box is attached when the foam insulation material is filled in the first method.
In the first method, first, as shown in FIG. 8A, the support member 2e of the inner leg 2d that supports the hot water storage tank 2 inside the outer box 3 is attached to the outer leg 7 of the bottom plate 3e of the outer leg 7. Position at the location.

続いて、図８(ｂ)に示すように、ボルトｂ２を底板３ｅの貫通孔３ｅ１を挿通させて、内脚２ｄの支持部材２ｅの雌ネジ部２ｅ１に螺着する。
なお、支持部材２ｅの所定箇所には、ボルトｂ２が螺着されるための雌ネジ部２ｅ１が予め螺刻されているか、ナットｎ０(図８(ａ)中、２点鎖線で示す)が溶接などで支持部材２ｅに固定または形成されている。 Subsequently, as shown in FIG. 8B, the bolt b2 is inserted through the through hole 3e1 of the bottom plate 3e and screwed to the female screw portion 2e1 of the support member 2e of the inner leg 2d.
Note that a female screw portion 2e1 for screwing the bolt b2 is pre-threaded at a predetermined position of the support member 2e, or a nut n0 (indicated by a two-dot chain line in FIG. 8A) is welded. For example, it is fixed or formed on the support member 2e.

続いて、図８(ｂ)に示す状態で、図８(ｃ)に示すように、ボルトｂ２のボルト頭ｂ２ａの逃げ３０ｅ１が形成されたやとい３０ｅが底板３ｅを外側から抑え、外箱３と貯湯タンク１との間の隙間のスペースｓ１に発泡断熱材６が充填される。なお、やとい３０ｅは、ボルトｂ２頭の逃げ３０ｅ１の小さな空間以外で底板３ｅを外側から抑えるので、底板３ｅは、確実に抑えられ、発泡断熱材６が外箱３の接合部から漏出することが抑制される。   Subsequently, in the state shown in FIG. 8 (b), as shown in FIG. 8 (c), as soon as the relief 30e1 of the bolt head b2a of the bolt b2 is formed, the short 30e holds the bottom plate 3e from the outside, and the outer box 3 The foam heat insulating material 6 is filled in the space s1 between the two and the hot water storage tank 1. The short plate 30e restrains the bottom plate 3e from the outside except for the small space of the bolt b2 head relief 30e1, so that the bottom plate 3e is reliably restrained, and the foam insulation 6 leaks from the joint portion of the outer box 3. Is suppressed.

続いて、泡断熱材６の充填作業、発泡終了後、図８(ｄ)に示すように、ボルトｂ２が取り外される。
続いて、図８(ｅ)に示すように、外脚７の取り付け穴７ａ１を底板３ｅの貫通孔３ｅ１に合わせ、外脚７を底板３ｅの取り付け箇所に当接させ、ボルトｂ２を、外脚７の取り付け穴７ａ１、底板３ｅの貫通孔３ｅ１に貫通させ、内脚２ｄの支持部材２ｅの雌ネジ部２ｅ１に螺着し、外脚７を外箱の底板３ｅに固定する。
その他の外脚７の外箱の底板３ｅへの固定も同様な方法で遂行される。 Subsequently, after the filling operation of the foam heat insulating material 6 and the foaming are completed, the bolt b2 is removed as shown in FIG.
Subsequently, as shown in FIG. 8 (e), the mounting hole 7a1 of the outer leg 7 is aligned with the through hole 3e1 of the bottom plate 3e, the outer leg 7 is brought into contact with the mounting position of the bottom plate 3e, and the bolt b2 is attached to the outer leg. 7 and through the through hole 3e1 of the bottom plate 3e, and screwed into the female screw portion 2e1 of the support member 2e of the inner leg 2d to fix the outer leg 7 to the bottom plate 3e of the outer box.
The other outer legs 7 are fixed to the bottom plate 3e of the outer box in the same manner.

＜第２の方法＞
図９(ａ)〜(ｅ)は、第２の方法の発泡断熱材６の充填時の外箱３の外脚７の取り付け箇所付近での作業工程を示す図である。
第２の方法では、まず、図９(ａ)に示すように、外箱３の内部で貯湯タンク２を支持する内脚２ｄの支持部材２ｅを外脚７の底板３ｅの外脚７の取り付け箇所に位置決めする。 <Second method>
FIGS. 9A to 9E are diagrams showing work steps in the vicinity of the attachment position of the outer leg 7 of the outer box 3 when the foam heat insulating material 6 is filled in the second method.
In the second method, first, as shown in FIG. 9A, the support member 2e of the inner leg 2d that supports the hot water storage tank 2 inside the outer box 3 is attached to the outer leg 7 of the bottom plate 3e of the outer leg 7. Position at the location.

続いて、図９(ｂ)に示すように、ボルトｂ３を、外箱３の内部側から内脚２ｄの支持部材２ｅの貫通孔２ｅ１と底板３ｅの貫通孔３ｅ１とを挿通させ、ボルト雄ねじ部ｂ３ａにナットｎ２を仮留めする。なお、貫通孔２ｅ１は雌ネジになっており、ボルトｂ３が空回りしないようになっている。
続いて、図９(ｃ)に示すように、ボルトｂ３の雄ねじ部ｂ３ａ、ナットｎ２の逃げ３０ｆ１が形成されたやとい３０ｆで底板３ｅを外側から抑え、外箱３と貯湯タンク１との間の隙間のスペースｓ１に発泡断熱材６が充填される。 Subsequently, as shown in FIG. 9 (b), the bolt b3 is inserted from the inner side of the outer box 3 through the through hole 2e1 of the support member 2e of the inner leg 2d and the through hole 3e1 of the bottom plate 3e. A nut n2 is temporarily fixed to b3a. The through-hole 2e1 is a female screw so that the bolt b3 does not run idle.
Subsequently, as shown in FIG. 9 (c), the bottom plate 3 e is restrained from the outside by the short thread 30 f in which the male thread portion b 3 a of the bolt b 3 and the relief 30 f 1 of the nut n 2 are formed, and the space between the outer box 3 and the hot water storage tank 1 is reduced. The space s <b> 1 in the gap is filled with the foam heat insulating material 6.

この場合、やとい３０ｆは、ボルトｂ３の雄ねじ部ｂ３ａとナットｎ２を逃げる逃げ３０ｆ１の小さな空間以外で底板３ｅを外側から抑えるので、底板３ｅは、確実に抑えられ、発泡断熱材６が外箱３の接合部から漏出することが抑制される。
続いて、図９(ｄ)に示すように、やとい３０ｆとナットｎ２が取り外される。 In this case, the heel 30f restrains the bottom plate 3e from the outside except for a small space of the relief 30f1 for escaping the male threaded portion b3a and the nut n2 of the bolt b3. Leakage from the joint portion 3 is suppressed.
Subsequently, as shown in FIG. 9D, the short 30f and the nut n2 are removed.

続いて、図９(ｅ)に示すように、外脚７の取り付け穴７ａ１を底板３ｅの貫通孔３ｅ１に合わせ、外脚７を底板３ｅの取り付け箇所に当接させて、底板３ｅの貫通孔３ｅ１、外脚７の取り付け穴７ａ１を貫通させたボルトｂ３の雄ねじ部ｂ３ａにナットｎ２を螺着し、外脚７を外箱の底板３ｅに固定する。
その他の外脚７の外箱の底板３ｅへの固定も同様な方法で遂行される。 Subsequently, as shown in FIG. 9 (e), the mounting hole 7a1 of the outer leg 7 is aligned with the through hole 3e1 of the bottom plate 3e, and the outer leg 7 is brought into contact with the mounting position of the bottom plate 3e, thereby the through hole of the bottom plate 3e. 3e1 and a nut n2 are screwed into a male threaded portion b3a of a bolt b3 penetrating the mounting hole 7a1 of the outer leg 7, and the outer leg 7 is fixed to the bottom plate 3e of the outer box.
The other outer legs 7 are fixed to the bottom plate 3e of the outer box in the same manner.

底板３ｅの貫通孔３ｅ１をバーリング加工して雌ねじ部を形成し、図９(ｂ)の工程で、ナットｎ２を仮留めすることを取り止めてもよい。この場合、外脚７の上板７ａには、貫通孔３ｅ１のバーリング加工の箇所の逃げが形成されることになる。   The through hole 3e1 of the bottom plate 3e may be subjected to burring to form an internal thread portion, and the temporary fastening of the nut n2 may be stopped in the step of FIG. 9B. In this case, the upper plate 7a of the outer leg 7 is formed with a relief of the burring portion of the through hole 3e1.

＜第３の方法の一例＞
第３の方法は、図１０に示す上板７ａの中央部に切り欠き部７ａ２を形成した外脚７Ａを用いるものである。なお、図１０は、上板の中央部に切り欠き部を形成した外脚を下方から見た斜視図である。
外脚７Ａの上板７ａの切り欠き部７ａ２の外側の箇所には、貫通孔である取り付け穴７ａ３が形成されている。 <Example of third method>
The third method uses an outer leg 7A in which a notch 7a2 is formed at the center of the upper plate 7a shown in FIG. FIG. 10 is a perspective view of the outer leg having a notch formed in the center of the upper plate, as viewed from below.
A mounting hole 7a3, which is a through hole, is formed at a location outside the notch 7a2 of the upper plate 7a of the outer leg 7A.

図１１(ａ)〜(ｅ)は、第３の方法の発泡断熱材６の充填時の外箱３の外脚７の取り付け箇所付近での作業工程を示す概念図である。
第３の方法では、まず、図１１(ａ)に示すように、外箱３の内部で貯湯タンク２を支持する内脚２ｄの支持部材２ｅを、外脚７の底板３ｅの外脚７の取り付け箇所に位置決めする。なお、支持部材２ｅの中央箇所には第１雌ネジ部２ｅ１が形成され、支持部材２ｅの雌ネジ部２ｅ１の外側には第２雌ネジ部２ｅ２が形成されている。または、第１雌ネジ部２ｅ１をもつナット、第２雌ネジ部２ｅ２をもつナットｎ０(図１１(ａ)中、２点鎖線で示す)が溶接などで支持部材２ｅに固定または形成されている。 11 (a) to 11 (e) are conceptual diagrams showing work steps in the vicinity of the attachment position of the outer leg 7 of the outer box 3 when the foam heat insulating material 6 is filled in the third method.
In the third method, first, as shown in FIG. 11 (a), the support member 2 e of the inner leg 2 d that supports the hot water storage tank 2 inside the outer box 3 is attached to the outer leg 7 of the bottom plate 3 e of the outer leg 7. Position at the mounting location. A first female screw portion 2e1 is formed at the center of the support member 2e, and a second female screw portion 2e2 is formed outside the female screw portion 2e1 of the support member 2e. Alternatively, a nut having a first female screw portion 2e1 and a nut n0 having a second female screw portion 2e2 (indicated by a two-dot chain line in FIG. 11A) are fixed or formed on the support member 2e by welding or the like. .

また、外箱３の底板３ｅには、支持部材２ｅの第１雌ネジ部２ｅ１、第２雌ネジ部２ｅ２にそれぞれ対応する位置に第１貫通孔３ｅ１、第２貫通孔３ｅ２が形成されている。なお、底板３ｅの第２貫通孔３ｅ２は、外脚７Ａの上板７ａの取り付け穴７ａ３(図１０参照)に対応する位置に形成されている。
続いて、図１１(ｂ)に示すように、ボルトｂ４を底板３ｅの第１貫通孔３ｅ１に挿通させて、内脚２ｄの支持部材２ｅの第１雌ネジ部２ｅ１に螺着する。 Further, a first through hole 3e1 and a second through hole 3e2 are formed on the bottom plate 3e of the outer box 3 at positions corresponding to the first female screw portion 2e1 and the second female screw portion 2e2 of the support member 2e, respectively. . The second through hole 3e2 of the bottom plate 3e is formed at a position corresponding to the attachment hole 7a3 (see FIG. 10) of the upper plate 7a of the outer leg 7A.
Subsequently, as shown in FIG. 11B, the bolt b4 is inserted into the first through hole 3e1 of the bottom plate 3e and screwed to the first female screw portion 2e1 of the support member 2e of the inner leg 2d.

続いて、図１１(ｃ)に示すように、ボルトｂ４のボルト頭ｂ４ａの凹形状の逃げ３０ｇ１が形成されたやとい３０ｇが底板３ｅを外側から抑え、外箱３と貯湯タンク１との間の隙間のスペースｓ１に発泡断熱材６が充填される。なお、やとい３０ｇは、ボルト頭ｂ４ａの逃げ３０ｇ１の小さな空間以外の箇所で底板３ｅを外側から抑えるので、底板３ｅはやとい３０ｇにより確実に抑えられ、発泡断熱材６が外箱３の接合部から漏出することが抑制される。   Subsequently, as shown in FIG. 11 (c), as soon as the concave relief 30 g 1 of the bolt head b 4 a of the bolt b 4 is formed, the bottom plate 3 e is suppressed from the outside, and the space between the outer box 3 and the hot water storage tank 1 is reduced. The space s <b> 1 in the gap is filled with the foam heat insulating material 6. The short plate 30g holds the bottom plate 3e from the outside at a location other than the small space of the relief 30g1 of the bolt head b4a. Therefore, the bottom plate 3e is reliably suppressed by the quick plate 30g, and the foam heat insulating material 6 is joined to the outer box 3. Leakage from the part is suppressed.

続いて、図１１(ｄ)に示すように、外脚７Ａの上板７ａの中央部の切り欠き部７ａ２(図１０参照)内に、ボルトｂ４のボルト頭ｂ４ａが収容されるとともに、外脚７Ａの上板７ａの取り付け穴７ａ３が、底板３ｅの第２貫通孔３ｅ２に合うように、外脚７Ａを底板３ｅの取り付け箇所に位置決めする。   Subsequently, as shown in FIG. 11 (d), the bolt head b4a of the bolt b4 is accommodated in the notch 7a2 (see FIG. 10) in the center of the upper plate 7a of the outer leg 7A, and the outer leg The outer leg 7A is positioned at the attachment position of the bottom plate 3e so that the attachment hole 7a3 of the upper plate 7a of 7A fits the second through hole 3e2 of the bottom plate 3e.

続いて、図１１(ｅ)に示すようにボルトｂ５を、外脚７の取り付け穴７ａ３、底板３ｅの第２貫通孔３ｅ２に貫通させ、内脚２ｄの支持部材２ｅの第２雌ネジ部２ｅ２に螺着し、外脚７を外箱の底板３ｅに固定する。
全ての外脚７の外箱の底板３ｅへの固定は同様な方法で遂行される。 Subsequently, as shown in FIG. 11 (e), the bolt b5 is passed through the mounting hole 7a3 of the outer leg 7 and the second through hole 3e2 of the bottom plate 3e, and the second female screw portion 2e2 of the support member 2e of the inner leg 2d. The outer leg 7 is fixed to the bottom plate 3e of the outer box.
The fixing of all the outer legs 7 to the bottom plate 3e of the outer box is performed in the same manner.

第３の方法では、ボルトｂ４により、内脚２ｄの支持部材２ｅと外箱の底板３ｅとを固定し、ボルトｂ５により、内脚２ｄの支持部材２ｅと外脚７とを固定することとなる。
以上、説明した第３の方法は、言わば、第３の方法を、第１の方法に適用したものである。 In the third method, the support member 2e of the inner leg 2d and the bottom plate 3e of the outer box are fixed by the bolt b4, and the support member 2e of the inner leg 2d and the outer leg 7 are fixed by the bolt b5. .
The above-described third method is, in other words, an application of the third method to the first method.

＜第３の方法の他例の第４の方法＞
第３の方法の他例の第４の方法として、上述の第３の方法を第２の方法に適用することができる。
第４の方法は、上述の第３の方法と同様にして遂行される。 <Fourth Method of Another Example of Third Method>
As a fourth method of another example of the third method, the above-described third method can be applied to the second method.
The fourth method is performed in the same manner as the third method described above.

図１２は、第４の方法の外箱３の底板３ｅに外脚７を取り付けた状態を示す概念図である。
第４の方法では、外箱の底板３ｅに固定した外脚７Ａ(図１０参照)の上板７ａの中央部の切り欠き部７ａ２に配置されるボルトｂ６とナットｎ３により、内脚２ｄの支持部材２ｅと外箱の底板３ｅとが固定される。こうして、ボルトｂ６により、内脚２ｄの支持部材２ｅと外脚７Ａとが固定されることになる。 FIG. 12 is a conceptual diagram showing a state in which the outer legs 7 are attached to the bottom plate 3e of the outer box 3 of the fourth method.
In the fourth method, the inner leg 2d is supported by the bolt b6 and the nut n3 arranged in the notch 7a2 in the center of the upper plate 7a of the outer leg 7A (see FIG. 10) fixed to the bottom plate 3e of the outer box. The member 2e and the bottom plate 3e of the outer box are fixed. Thus, the support member 2e of the inner leg 2d and the outer leg 7A are fixed by the bolt b6.

第４の方法では、外箱３と貯湯タンク２との間の隙間のスペースｓ１に発泡断熱材６が充填時、ナットｎ３またナットｎ３およびボルトｂ６の雄ねじ部ｂ６ａの逃げが形成されたやといが底板３ｅを外側から抑える。そのため、やといは、ナットｎ３またはナットｎ３およびボルトｂ６の雄ねじ部ｂ６ａの逃げ部の小さな空間以外の箇所で底板３ｅを外側から抑えるので、底板３ｅは、確実に抑えられ、発泡断熱材６が外箱３の接合部から漏出することが抑制される。   In the fourth method, as soon as the foam insulation 6 is filled in the space s1 between the outer box 3 and the hot water storage tank 2, the relief of the nut n3 or the male threaded portion b6a of the nut n3 and the bolt b6 is formed. Suppresses the bottom plate 3e from the outside. Therefore, the bottom plate 3e is restrained from the outside at a place other than the small space of the relief portion of the nut n3 or the nut n3 and the male threaded portion b6a of the bolt b6, so that the bottom plate 3e is reliably restrained and the foam heat insulating material 6 Leakage from the junction of the outer box 3 is suppressed.

上述の第３の方法、第４の方法によれば、外脚７Ａを取り付けない状態で、発泡断熱材６の充填が行われるので、やといの形状が単純化でき、製造コストの低コスト化が可能である。
また、発泡断熱材６の充填中、外脚７Ａをやといで確実に抑えられるので、発泡断熱材６の外箱３からの漏れが抑制される。 According to the third method and the fourth method described above, since the foam heat insulating material 6 is filled without attaching the outer leg 7A, the shape of the foam can be simplified and the manufacturing cost can be reduced. Is possible.
Moreover, since the outer leg 7A is finally suppressed during filling of the foam heat insulating material 6, leakage of the foam heat insulating material 6 from the outer box 3 is suppressed.

＜第５の方法＞
図１３は、第５の方法の外箱の底板に抑え板治具を取り付けて発泡断熱材を充填している状態を示す貯湯タンクユニットを斜め下方から見た斜視図である。なお、図１３では、発泡断熱材６を充填中、外箱３全体を抑えるやとい３０は、省略して示している。
図１４は、第５の方法の発泡断熱材６の充填時の外箱３の外脚７の取り付け箇所付近での作業工程を示す概念図である。 <Fifth method>
FIG. 13: is the perspective view which looked at the hot water storage tank unit which shows the state which attached the restraint board jig | tool to the bottom plate of the outer box of the 5th method, and was filled with the foaming heat insulating material from diagonally downward. In FIG. 13, as soon as the foamed heat insulating material 6 is filled, as soon as the entire outer box 3 is suppressed, 30 is omitted.
FIG. 14 is a conceptual diagram showing a work process in the vicinity of an attachment position of the outer leg 7 of the outer box 3 when the foam heat insulating material 6 is filled in the fifth method.

第５の方法では、図１４に示すように、発泡断熱材６を貯湯タンク２と外箱３との間のスペース１ｓに充填する際に、外脚７の取り付け箇所の外箱３の底板３ｅが、充填中の発泡断熱材６の内圧で変形しないように、つまり外箱３の底板３ｅにおける外脚７の取り付け箇所が平面を保てるように、平面形状を有する抑え板治具Ｏｊで外脚７の取り付け箇所を抑える構成である。   In the fifth method, as shown in FIG. 14, when filling the space 1 s between the hot water storage tank 2 and the outer box 3 with the foam heat insulating material 6, the bottom plate 3 e of the outer box 3 where the outer legs 7 are attached. However, in order not to be deformed by the internal pressure of the foamed heat insulating material 6 during filling, that is, so that the mounting position of the outer leg 7 on the bottom plate 3e of the outer box 3 can be kept flat, the outer leg is fixed by the holding plate jig Oj having a planar shape. 7 is a configuration that suppresses the attachment location of 7.

底板３ｅの外脚７の取り付け箇所が平面でない場合、外脚７の底板３ｅへの取り付けが確実に、つまり底板３ｅと外脚７とがほぼ隙間なく密着して取り付けることができない。
この場合、外脚７は、図１に示すように、貯湯タンクユニット１の設置箇所Ｇに対する支持部材であるので、貯湯タンクユニット１の取り付けが不安定になる。 If the mounting position of the outer leg 7 of the bottom plate 3e is not flat, the mounting of the outer leg 7 to the bottom plate 3e cannot be performed reliably, that is, the bottom plate 3e and the outer leg 7 cannot be mounted in close contact with each other.
In this case, as shown in FIG. 1, the outer leg 7 is a support member for the installation location G of the hot water storage tank unit 1, so that the hot water storage tank unit 1 is unstablely attached.

なお、抑え板治具Ｏｊは、底板３ｅの外脚７の取り付け箇所を平面に保持すればよいので、抑え板治具Ｏｊの底板３ｅの外脚７の取り付け箇所に当接、または、対向する箇所が平面であればよい。
第５の方法は、上記第１〜第４の方法に適用した場合を例に説明する。 The holding plate jig Oj only needs to hold the mounting position of the outer leg 7 of the bottom plate 3e on a flat surface, so that it contacts or faces the mounting position of the outer leg 7 of the bottom plate 3e of the holding plate jig Oj. The location may be a plane.
A case where the fifth method is applied to the first to fourth methods will be described as an example.

＜第５の方法の第１の方法への適用＞
第５の方法を、第１の方法に適用した場合、図８(ｂ)、(ｃ)の工程において、ボルトｂ２が、抑え板治具Ｏｊの貫通孔Ｏｊ１を挿通して、抑え板治具Ｏｊが底板３ｅに固定されることになる(図１４参照)。この場合、やとい３０ｅには、ボルトｂ２のボルト頭ｂ２ａと抑え板治具Ｏｊを逃げる凹状の逃げ３０ｅ１が形成される。そして、発泡断熱材６の充填中、やとい３０ｅは逃げ３０ｅ１以外の箇所で外箱３を抑えることになる。
そして、発泡断熱材６の充填終了後、図８(ｄ)に示すように、ボルトｂ２が取り外される際に抑え板治具Ｏｊが除去されることになる。 <Application of the fifth method to the first method>
When the fifth method is applied to the first method, the bolt b2 is inserted through the through hole Oj1 of the holding plate jig Oj in the steps of FIGS. Oj is fixed to the bottom plate 3e (see FIG. 14). In this case, a concave relief 30e1 that escapes the bolt head b2a of the bolt b2 and the restraining plate jig Oj is formed in the short 30e. And while filling the foam heat insulating material 6, the short 30e suppresses the outer box 3 in places other than the escape 30e1.
Then, after the filling of the foam heat insulating material 6, as shown in FIG. 8D, the restraining plate jig Oj is removed when the bolt b2 is removed.

＜第５の方法の第２の方法への適用＞
第５の方法を第２の方法に適用した場合、図９(ｂ)、(ｃ)において、外箱３の内側からボルトｂ３の雄ねじ部ｂ３ａが底板３ｅを挿通して、抑え板治具Ｏｊが底板３ｅにナットｎ２で仮固定されることになる。 <Application of the fifth method to the second method>
When the fifth method is applied to the second method, in FIGS. 9B and 9C, the male threaded portion b3a of the bolt b3 passes through the bottom plate 3e from the inside of the outer box 3, and the holding plate jig Oj Is temporarily fixed to the bottom plate 3e with the nut n2.

この場合、やとい３０ｅ(図１４参照)には、ボルトｂ３の雄ねじ部ｂ３ａ（図９（ｃ）参照）と抑え板治具Ｏｊとナットｎ２を逃げる凹状の逃げ３０ｅ１が形成される。そして、発泡断熱材６の充填中、やとい３０ｅは凹状の逃げ３０ｅ１以外の箇所で外箱３を抑えることになる。そして、発泡断熱材６の充填終了後、図９(ｅ)に示すように、やとい３０ｅが取り外された際、ナットｎ２が外され抑え板治具Ｏｊが除去されることになる。 In this case, the hired 30e (see FIG. 14), a concave relief 30e1 escaping the external thread portion b3 a (FIG. 9 (c) refer) and restraining plate jig Oj and nuts n2 of bolts b3 are formed. Then, during the filling of the foam heat insulating material 6, the short 30e suppresses the outer box 3 at a place other than the concave relief 30e1. Then, after the filling of the foam heat insulating material 6 is completed, as shown in FIG. 9 (e), when the last 30e is removed, the nut n2 is removed and the restraining plate jig Oj is removed.

＜第５の方法の第３方法への適用＞
第５の方法を第３方法に適用した場合、図１１(ｂ)の際に、ボルトｂ４により抑え板治具Ｏｊが底板３ｅに仮固定されることになる。
ここで、抑え板治具Ｏｊは、外脚７の上板７ａに当接すべく、外脚７の上板７ａと同じ大きさまたはほぼ大きさの当接面をもつとよい。 <Application of the fifth method to the third method>
When the fifth method is applied to the third method, the holding plate jig Oj is temporarily fixed to the bottom plate 3e by the bolt b4 in the case of FIG. 11B.
Here, the holding plate jig Oj may have an abutment surface having the same or substantially the same size as the upper plate 7a of the outer leg 7 so as to abut on the upper plate 7a of the outer leg 7.

やとい３０ｇには、ボルトｂ４のボルト頭ｂ４ａと抑え板治具Ｏｊを逃げる凹状の逃げ３０ｇ１が形成される。そして、発泡断熱材６の充填中、やとい３０ｇは逃げ３０ｇ１以外の箇所で外箱３を抑えることになる。そして、発泡断熱材６の充填終了後、図９(ｅ)に示すように、やとい３０ｅが取り外された際、ボルトｂ４を外して抑え板治具Ｏｊが除去される。   The short 30g is formed with a concave relief 30g1 for escaping the bolt head b4a of the bolt b4 and the holding plate jig Oj. Then, during the filling of the foam heat insulating material 6, the short 30g will suppress the outer box 3 at a place other than the escape 30g1. Then, after the filling of the foam heat insulating material 6, as shown in FIG. 9 (e), when the plate 30e is removed, the bolt b4 is removed and the holding plate jig Oj is removed.

＜第５の方法の第４の方法への適用＞
第５の方法を第４方法に適用した場合、図１２に示すボルトｂ６に留められるナットｎ３が、貫通孔Ｏｊ１を挿通して抑え板治具Ｏｊが底板３ｅに固定されることになる。
ここで、抑え板治具Ｏｊは、外脚７の上板７ａに当接すべく、抑え板治具Ｏｊは上板７ａと同じ大きさまたはほぼ大きさの当接面をもつとよい。 <Application of the fifth method to the fourth method>
When the fifth method is applied to the fourth method, the nut n3 fastened to the bolt b6 shown in FIG. 12 is inserted through the through hole Oj1, and the restraining plate jig Oj is fixed to the bottom plate 3e.
Here, in order for the holding plate jig Oj to come into contact with the upper plate 7a of the outer leg 7, the holding plate jig Oj may have an abutting surface having the same size or substantially the same size as the upper plate 7a.

やといには、ナットｎ３と抑え板治具Ｏｊを逃げる凹状の逃げが形成される。そして、発泡断熱材６の充填中、やといはナットｎ３と抑え板治具Ｏｊの凹状の逃げ以外の箇所で外箱３を抑えることになる。そして、発泡断熱材６の充填終了後、やとい３０が取り外された際、ナットｎ３を外して抑え板治具Ｏｊが除去される。   Eventually, a concave relief is formed to escape the nut n3 and the restraining plate jig Oj. Then, during the filling of the foam heat insulating material 6, the outer box 3 is restrained at a place other than the nut n3 and the concave relief of the restraining plate jig Oj. And after completion | finish of filling of the foam heat insulating material 6, when the 30 is removed, the nut n3 will be removed and the control board jig | tool Oj will be removed.

第５の方法によれば、発泡断熱材６の充填時、外脚７の取り付け箇所が抑え板治具Ｏｊで抑えられるので、底板３ｅの外脚７の取り付け箇所が平面を保持でき、外脚７が確実に外箱３の底板３ｅに固定できる。そのため、貯湯タンクユニット１の設置が安定化する。   According to the fifth method, when the foam heat insulating material 6 is filled, the mounting position of the outer leg 7 can be suppressed by the pressing plate jig Oj, so that the mounting position of the outer leg 7 of the bottom plate 3e can hold a flat surface. 7 can be securely fixed to the bottom plate 3 e of the outer box 3. Therefore, the installation of the hot water storage tank unit 1 is stabilized.

＜第６の方法＞
第６の方法は、抑え板治具Ｏｊを治具としてではなく抑え板Ｏｉとし、抑え板治具Ｏｊと同様に、抑え板Ｏｉで底板３ｅを抑えて、発泡断熱材６の充填を行い、充填後、抑え板治具Ｏｊと異なり、底板３ｅと外脚７との間に抑え板Ｏｉを固定する構成としてもよい(図１５参照)。
発泡断熱材６の充填時の工程は、抑え板治具Ｏｊと同様に、ボルトｂ２が、抑え板Ｏｉの貫通孔Ｏｉ１を挿通して、抑え板Ｏｉが底板３ｅに固定されることになる(図１５参照)。この場合、やといには、ボルトｂ２のボルト頭ｂ２ａと抑え板Ｏｉを逃げる凹状の逃げが形成される。そして、発泡断熱材６の充填中、やといは逃げ以外の箇所で外箱３を抑えることになる
第６の方法は、第１〜第４の方法にも、同様に適用可能である。 <Sixth method>
In the sixth method, the restraining plate jig Oj is not the jig but the restraining plate Oi, and the bottom plate 3e is restrained by the restraining plate Oi in the same manner as the restraining plate jig Oj, and the foam insulation 6 is filled. Unlike the holding plate jig Oj after filling, the holding plate Oi may be fixed between the bottom plate 3e and the outer leg 7 (see FIG. 15).
The process at the time of filling with the foam heat insulating material 6 is the same as the restraining plate jig Oj, and the bolt b2 is inserted through the through hole Oi1 of the restraining plate Oi , and the restraining plate Oi is fixed to the bottom plate 3e ( (See FIG. 15 ). In this case, a concave relief that escapes the bolt head b2a of the bolt b2 and the holding plate Oi is formed. And the 6th method which suppresses the outer box 3 in places other than escape during filling of the foam heat insulating material 6 is applicable to the 1st-4th method similarly.

図１５は、第６の方法の発泡断熱材６の充填時の外箱３の外脚７の取り付け箇所付近での作業工程を示す概念図である。
なお、説明した抑え板治具Ｏｊと抑え板Ｏｉとは、上述以外の方法で、貯湯タンクユニット１の貯湯タンク２に適用してもよい。 FIG. 15 is a conceptual diagram showing a work process in the vicinity of the attachment position of the outer leg 7 of the outer box 3 when the foam heat insulating material 6 is filled in the sixth method.
Note that the described restraining plate jig Oj and restraining plate Oi may be applied to the hot water storage tank 2 of the hot water storage tank unit 1 by methods other than those described above.

第６の方法によれば、発泡断熱材６の充填時、外脚７の取り付け箇所が抑え板Ｏｉで抑えられるので、底板３ｅの外脚７の取り付け箇所が平面を保持でき、外脚７が確実に外箱３の底板３ｅに固定できる。そのため、貯湯タンクユニット１の設置が安定化する。   According to the sixth method, when the foam heat insulating material 6 is filled, the mounting position of the outer leg 7 is suppressed by the suppressing plate Oi, so that the mounting position of the outer leg 7 of the bottom plate 3e can hold a flat surface, and the outer leg 7 It can be securely fixed to the bottom plate 3e of the outer box 3. Therefore, the installation of the hot water storage tank unit 1 is stabilized.

＜変形例の発泡断熱材６の充填作業例＞
次に、変形例の発泡断熱材６の充填時の外箱３の外脚７の取り付け箇所付近での作業例について説明する。
図１６は、変形例の発泡断熱材の充填作業例を示す概要図である。 <Example of filling work of foam insulation 6 according to modification>
Next, an example of work in the vicinity of the place where the outer leg 7 of the outer box 3 is attached when the foam heat insulating material 6 according to the modification is filled will be described.
FIG. 16 is a schematic diagram illustrating an example of a filling work of the foam heat insulating material according to the modification.

図１６の変形例の発泡断熱材の充填作業例の貯湯タンクユニット１Ａは、図１の実施形態の貯湯タンクユニット１と異なり、外箱３の外脚７を無くした外箱３Ａの構成としたものである。
外箱３Ａの内部には、貯湯タンクユニット１Ａを設置場所Ｇに取り付けるための複数の強度部材３Ｋが底板３ｅ近くの前板３ａ、側板３ｂ，３ｂ、後板３ｃなどにボルト締め、溶接などで固定される。 Unlike the hot water storage tank unit 1 of the embodiment of FIG. 1, the hot water storage tank unit 1 </ b> A of the modification example of the foam heat insulating material of the modified example of FIG. Is.
Inside the outer box 3A, a plurality of strength members 3K for attaching the hot water storage tank unit 1A to the installation location G are bolted to the front plate 3a, side plates 3b, 3b, rear plate 3c, etc. near the bottom plate 3e, by welding, etc. Fixed.

貯湯タンクユニット１Ａは設置場所Ｇに載置され、設置場所Ｇにアンカーボルトｂａで固定される取り付け部材Ｔの貫通孔を挿通した固定用のボルトｂｏを、外箱３Ａの側方に形成された貫通孔３Ａ１を挿通させて、強度部材３Ｋの雌ねじ部３Ｋ１に螺着させる。これにより、外箱３Ａが設置場所Ｇに固定され、貯湯タンクユニット１Ａが設置場所Ｇに設置される。   The hot water storage tank unit 1A is placed on the installation place G, and a fixing bolt bo that is inserted through the through hole of the mounting member T fixed to the installation place G with the anchor bolt ba is formed on the side of the outer box 3A. The through hole 3A1 is inserted and screwed into the female screw portion 3K1 of the strength member 3K. As a result, the outer box 3A is fixed at the installation location G, and the hot water storage tank unit 1A is installed at the installation location G.

取り付け部材Ｔは、図１６に示すように、側方視で例えばＬ字状の形状を有しており、二点鎖線で示す筋交い部材ｓを入れて取り付け部材Ｔの強度を高めることが好ましい。
或いは、取り付け部材Ｔに、例えば、側方視で、予め取り付け部材Ｔに筋交い部材ｓを入れたような三角柱の形状に形成し、取り付け部材Ｔの強度を高めることが望ましい。
変形例では、外箱３Ａの外脚が無いため、図７に示すような単純な形状のやとい３０ｃで外箱３Ａを抑えて、貯湯タンク２と外箱３Ａとの間に発泡断熱材６を充填することができる。 As shown in FIG. 16, the attachment member T has, for example, an L shape in a side view, and it is preferable to insert a bracing member s indicated by a two-dot chain line to increase the strength of the attachment member T.
Alternatively, it is desirable that the attachment member T is formed in a triangular prism shape in which the bracing member s is previously inserted in the attachment member T in a side view, for example, and the strength of the attachment member T is increased.
In the modified example, since there is no outer leg of the outer box 3A, the foamed heat insulating material 6 is interposed between the hot water storage tank 2 and the outer box 3A by restraining the outer box 3A with a heat shield 30c having a simple shape as shown in FIG. Can be filled.

そのため、やとい３０ｃが単純な形状にできるので、低コストで充填作業が行える。また、やとい３０ｃで外箱３Ａを確実に抑えられるので、発泡断熱材６の外箱３Ａの内部からの漏れがない。
また、外箱３Ａの側下部で、取り付け部材Ｔにより貯湯タンクユニット１Ａを固定するので、取り付け部材Ｔを地震対策の免震部材と兼用することができる。 For this reason, since the short 30c can be formed into a simple shape, the filling operation can be performed at low cost. Moreover, since the outer box 3A can be reliably suppressed by the quick 30c, there is no leakage from the inside of the outer box 3A of the foam heat insulating material 6.
Moreover, since the hot water storage tank unit 1A is fixed by the attachment member T at the lower side of the outer box 3A, the attachment member T can also be used as a seismic isolation member for earthquake countermeasures.

また、外箱３Ａに外脚７を設けない構成であるので、貯湯タンクユニット１Ａの高さが外脚７を設ける場合より低い。そのため、貯湯タンクユニット１Ａの梱包用のダンボールの高さが低く済むとともに、貯湯タンクユニット１Ａの梱包材の発泡スチロールが少なく済むので、輸送コストが少なく済むというメリットがある。   Moreover, since it is the structure which does not provide the outer leg 7 in the outer box 3A, the height of the hot water storage tank unit 1A is lower than the case where the outer leg 7 is provided. Therefore, there is an advantage that the height of the corrugated cardboard for packing the hot water storage tank unit 1A can be reduced, and the foamed polystyrene of the packing material for the hot water storage tank unit 1A can be reduced, so that the transportation cost can be reduced.

＜貯湯タンク２と外箱３(３Ａ)との間のスペーサ＞
図１７は、貯湯タンクユニットを斜め上方から見た外箱内に収容される貯湯タンクの透視斜視図である <Spacer between hot water storage tank 2 and outer box 3 (3A)>
FIG. 17 is a perspective view of the hot water storage tank housed in the outer box when the hot water storage tank unit is viewed obliquely from above.

＜スペーサｓｐ＞
貯湯タンク２と外箱３との間には、貯湯タンク２に対する外箱３の変形を阻止することを目的に、貯湯タンク２に対して外箱３を支持する複数のスペーサｓｐと複数のメンテナンス兼用スペーサｓｍとが配置されている。スペーサｓｐとメンテナンス兼用スペーサｓｍとはそれぞれ外箱３の内面に接着材、両面テープなどで固着される。 <Spacer sp>
Between the hot water storage tank 2 and the outer box 3, a plurality of spacers sp for supporting the outer box 3 with respect to the hot water storage tank 2 and a plurality of maintenance are provided for the purpose of preventing the deformation of the outer box 3 with respect to the hot water storage tank 2. A combined spacer sm is disposed. The spacer sp and the maintenance-use spacer sm are respectively fixed to the inner surface of the outer box 3 with an adhesive, a double-sided tape or the like.

スペーサｓｐは、直方体形状を有し、発泡スチロール、ウレタンなどの樹脂で形成されている。スペーサｓｐの貯湯タンク２と外箱３との間方向の寸法は、貯湯タンク２と外箱３との間の望ましい寸法とほぼ同じ寸法に設定されている。このように、スペーサｓｐにより、貯湯タンク２と外箱３との間を支持することにより、外箱３の変形を抑制している。   The spacer sp has a rectangular parallelepiped shape and is formed of a resin such as polystyrene foam or urethane. The dimension of the spacer sp in the direction between the hot water storage tank 2 and the outer box 3 is set to be approximately the same as the desired dimension between the hot water storage tank 2 and the outer box 3. In this way, the spacer sp is supported between the hot water storage tank 2 and the outer box 3 to suppress deformation of the outer box 3.

スペーサｓｐは、貯湯タンクユニット２の軸方向(長手方向)に複数配置されるとともに、貯湯タンクユニット２の略円柱形状を有する外周方向に複数配置されている。この際、複数のスペーサｓｐの軸方向(長手方向に)の配置を略同間隔にするととともに、複数のスペーサｓｐの外周方向の配置は略同間隔にすることが好ましい。複数のスペーサｓｐの間隔を略同じにすることにより、外箱３に加わる外力に対して、均等に外箱３の変形を抑制することができる。
なお、スペーサｓｐは、貯湯タンク２と外箱３との間の寸法を保持できれば、直方体形状以外の形状を有していてもよい。 A plurality of spacers sp are arranged in the axial direction (longitudinal direction) of the hot water storage tank unit 2, and a plurality of spacers are arranged in the outer peripheral direction of the hot water storage tank unit 2 having a substantially cylindrical shape. At this time, it is preferable that the arrangement of the plurality of spacers sp in the axial direction (longitudinal direction) is substantially the same interval, and the arrangement of the plurality of spacers sp in the outer circumferential direction is substantially the same interval. By making the intervals of the plurality of spacers sp substantially the same, deformation of the outer box 3 can be suppressed evenly with respect to the external force applied to the outer box 3.
The spacer sp may have a shape other than a rectangular parallelepiped shape as long as the dimension between the hot water storage tank 2 and the outer box 3 can be maintained.

＜メンテナンス兼用スペーサｓｍ＞
メンテナンス兼用スペーサｓｍは、貯湯タンク２の半径方向に中心軸をもつ円筒形状を有し、発泡スチロール、ウレタンなどの樹脂で形成されている。
メンテナンス兼用スペーサｓｍは、中心部に温度センサ５を収容する円柱状のスペース(空間)ｓｍ１を有し、温度センサ５を内部に収容するという特徴をもつ。 <Maintenance spacer sm>
The maintenance-use spacer sm has a cylindrical shape having a central axis in the radial direction of the hot water storage tank 2, and is formed of a resin such as foamed polystyrene or urethane.
The maintenance-use spacer sm has a cylindrical space (space) sm1 that accommodates the temperature sensor 5 in the center, and has a feature that the temperature sensor 5 is accommodated therein.

メンテナンス兼用スペーサｓｍの貯湯タンク２と外箱３との間方向の寸法、つまり円筒形状の中心軸方向の寸法は、貯湯タンク２と外箱３との間の望ましい寸法とほぼ同じ寸法に設定されている。メンテナンス兼用スペーサｓｍにより、貯湯タンク２と外箱３との間で外箱３を支持することにより、外箱３の変形を抑制している。
また、メンテナンス兼用スペーサｓｍは温度センサ５を収容する円柱状のスペース(空間)ｓｍ１を有するので、温度センサ５のメンテナンスが行い易い。 The dimension in the direction between the hot water storage tank 2 and the outer box 3 of the maintenance / use spacer sm, that is, the dimension in the central axis direction of the cylindrical shape is set to be approximately the same as the desired dimension between the hot water storage tank 2 and the outer box 3. ing. By supporting the outer box 3 between the hot water storage tank 2 and the outer box 3 by the maintenance and use spacer sm, deformation of the outer box 3 is suppressed.
Further, since the maintenance / use spacer sm has a columnar space (space) sm1 in which the temperature sensor 5 is accommodated, the temperature sensor 5 is easily maintained.

なお、メンテナンス兼用スペーサｓｍに、スペース(空間)ｓｍ１を有すれば、スペース(空間)ｓｍ１の形は円柱形状以外を採用してもよい。つまり、メンテナンス兼用スペーサｓｍは、中央部に、温度センサ５をメンテナンスするためのスペース(空間)ｓｍ１を有すれば、その形状適宜選択できる。   As long as the maintenance / use spacer sm has a space (space) sm1, the shape of the space (space) sm1 may be other than a cylindrical shape. That is, if the maintenance / use spacer sm has a space (space) sm1 for maintaining the temperature sensor 5 at the center, the shape can be selected as appropriate.

しかし、図１７に示すように、スペース(空間)ｓｍ１を円柱状空間にすると、温度センサ５の周りに均等な空間をもつことになるので、メンテナンスが行い易い。さらに、スペース(空間)ｓｍ１を円柱状空間にすると形成が容易である。
また、メンテナンス兼用スペーサｓｍの外形を円筒状にすると、メンテナンス兼用スペーサｓｍを設置する際、方向性がないので、取り扱い易い。 However, as shown in FIG. 17, if the space (space) sm1 is a cylindrical space, a uniform space is provided around the temperature sensor 5, so that maintenance is easy. Furthermore, formation is easy if the space (space) sm1 is a cylindrical space.
In addition, if the maintenance / use spacer sm is cylindrical, the maintenance / use spacer sm is easy to handle because there is no directionality when the maintenance / use spacer sm is installed.

ところで、図５(ａ)、(ｂ)に示すように、貯湯タンク２と外箱３との間に発泡断熱材６を充填して発泡させる際、貯湯タンク２と外箱３とを寝かせた状態で行われる。貯湯タンク２の上部(頭部)は下部(底部)の内脚２ｄのような支持部材がない。そのため、貯湯タンク２の上部(頭部)が下がり、各所(貯湯タンク２の下部を支持する内脚２ｄなど)に負担がかかる。そのため、貯湯タンク２と外箱３との間の充填材の発泡断熱材６の寸法が設計通りでないおそれがある。   By the way, as shown in FIGS. 5A and 5B, when the foamed heat insulating material 6 is filled between the hot water storage tank 2 and the outer box 3 and foamed, the hot water storage tank 2 and the outer box 3 are laid. Done in state. The upper part (head) of the hot water storage tank 2 has no support member like the inner leg 2d at the lower part (bottom). Therefore, the upper part (head) of the hot water storage tank 2 is lowered, and a load is applied to various parts (such as the inner legs 2d that support the lower part of the hot water storage tank 2). Therefore, there is a possibility that the size of the foam heat insulating material 6 between the hot water storage tank 2 and the outer box 3 is not as designed.

しかしながら、貯湯タンクユニット１は、貯湯タンク２と外箱３との間にスペーサｓｐおよびメンテナンス兼用スペーサｓｍが存在するので、貯湯タンク２の上部(頭部)が下がらず、充填材の発泡断熱材６の寸法が設計通りにでき、発泡断熱材６の断熱性能が高い。   However, since the hot water storage tank unit 1 has the spacer sp and the maintenance / use spacer sm between the hot water storage tank 2 and the outer box 3, the upper part (head) of the hot water storage tank 2 is not lowered, and the foam insulation of the filler is used. The dimension of 6 can be made as designed, and the heat insulating performance of the foam heat insulating material 6 is high.

また、発泡断熱材６を充填する前の貯湯タンク２と外箱３との移動や運搬時に、外箱３を把持すると、貯湯タンク２と外箱３との間に隙間(スペースｓ１)があるため、外箱３が変形するおそれがある。しかし、本貯湯タンクユニット１では、貯湯タンク２と外箱３との間にスペーサｓｐおよびメンテナンス兼用スペーサｓｍが存在するので、発泡断熱材６を充填する前の貯湯タンク２と外箱３の移動、運搬時に外箱３が変形することを抑制できる。   Further, when the outer box 3 is gripped during the movement or transportation of the hot water storage tank 2 and the outer box 3 before being filled with the foam heat insulating material 6, there is a gap (space s1) between the hot water storage tank 2 and the outer box 3. For this reason, the outer box 3 may be deformed. However, in the hot water storage tank unit 1, since the spacer sp and the maintenance / use spacer sm exist between the hot water storage tank 2 and the outer box 3, the movement of the hot water storage tank 2 and the outer box 3 before filling with the foam insulation 6 is performed. The outer box 3 can be prevented from being deformed during transportation.

また、貯湯タンク２と外箱３との間にスペーサｓｐおよびメンテナンス兼用スペーサｓｍが存在するので、発泡断熱材６の充填後の貯湯タンク２と外箱３との間の発泡断熱材６の寸法を設計寸法にほぼ管理でき、発泡断熱材６の断熱性能を所定の性能に保つことができる。   In addition, since the spacer sp and the maintenance-use spacer sm are present between the hot water storage tank 2 and the outer box 3, the dimensions of the foam heat insulating material 6 between the hot water storage tank 2 and the outer box 3 after being filled with the foam heat insulating material 6. Can be almost controlled to the design dimension, and the heat insulating performance of the foam heat insulating material 6 can be maintained at a predetermined performance.

同様に、メンテナンス兼用スペーサｓｍおよびスペーサｓｐが、前板３ａと貯湯タンク２との間に存在するので、発泡断熱材６の充填前、前板３ａが貯湯タンク２側に下がらず、前板３ａの変形を抑制できる。
以上のことから、高い断熱性能を備えるとともに、低コストの貯湯タンクユニット１およびその製造方法を実現することができる。 Similarly, since the maintenance-use spacer sm and spacer sp exist between the front plate 3a and the hot water storage tank 2, the front plate 3a is not lowered toward the hot water storage tank 2 before the foam heat insulating material 6 is filled. Can be suppressed.
From the above, it is possible to realize a low-cost hot water storage tank unit 1 and a manufacturing method thereof while having high heat insulation performance.

なお、本発明は前記した実施形態に限定されるものでなく、様々な実施例が含まれる。例えば、上記した実施例は本発明を分り易く説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。例えば、説明した構成の一部を含むものであってもよい。   The present invention is not limited to the above-described embodiment, and includes various examples. For example, the above-described embodiments are illustrative of the present invention, and are not necessarily limited to those having all the configurations described. For example, a part of the configuration described may be included.

また、ある実施例の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることも可能である。   Further, a part of a certain embodiment can be replaced with a configuration of another embodiment, and a configuration of another embodiment can be added to a configuration of a certain embodiment. Moreover, it is also possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

１ 貯湯タンクユニット
２ 貯湯タンク
２ｄ 内脚
２ｅ 支持部材
３、３Ａ 外箱
３ｅ 底板
６ 発泡断熱材
７ 外脚(第１外脚)
３０、３０ｃ、３０ｅ、３０ｆ やとい(第１治具)
ｂ２ ボルト（ねじ）
Ｏｊ 抑え板治具(平面度保持治具) 1 Hot water storage tank unit 2 Hot water storage tank
2d inner leg
2e support member 3, 3A outer box 3e bottom plate 6 foam insulation 7 outer leg (first outer leg)
30, 30c, 30e, 30f Yay (first jig)
b2 bolt (screw)
Oj holding plate jig (flatness holding jig)

Claims (2)

加熱された温水が貯留される貯湯タンクと、
前記貯湯タンクを内部に収容する外箱と、
前記外箱の底板の内側に固定され、前記貯湯タンクを支持する内脚が支持された平板状の支持部材と、
前記貯湯タンクと、ねじが留められた前記支持部材を有する前記外箱との間に形成された発泡断熱材と、
前記発泡断熱材が形成された前記外箱の下部の前記支持部材に、前記ねじを用いて取り付けられ、貯湯タンクユニットを支持する第１外脚とを備え、
前記支持部材は、前記内脚の前記底板に対向する領域および前記第１外脚の前記底板に対向する領域より大きく、
前記底板には前記支持部材が当接される平面部が形成されている
ことを特徴とする貯湯タンクユニット。 A hot water storage tank in which heated hot water is stored;
An outer box that houses the hot water storage tank;
A plate-like support member fixed to the inside of the bottom plate of the outer box and supported by an inner leg that supports the hot water storage tank;
A foam heat insulating material formed between the hot water storage tank and the outer box having the support member to which screws are fastened;
A first outer leg attached to the support member at the lower part of the outer box on which the foam heat insulating material is formed, using the screw, and supporting the hot water storage tank unit;
The support member is larger than a region facing the bottom plate of the inner leg and a region facing the bottom plate of the first outer leg,
The hot water storage tank unit, wherein the bottom plate is formed with a flat portion against which the support member abuts. 加熱された温水が貯留される貯湯タンクと、
前記貯湯タンクを内部に収容する外箱と、
前記貯湯タンクと前記外箱との間に形成される発泡断熱材と、
前記外箱の下部に取り付けられ、貯湯タンクユニットを支持する第１外脚とを備える貯湯タンクユニットの製造方法であって、
前記外箱の底板を含む下部が第１治具により抑えられ、かつ、前記外箱の底板の前記第１外脚の取り付け箇所が、当該取り付け箇所を平面に保つ平面度保持治具または抑え板により抑えられ、
前記発泡断熱材は、前記貯湯タンクと前記外箱との間に充填され発泡して形成される
ことを特徴とする貯湯タンクユニットの製造方法。 A hot water storage tank in which heated hot water is stored;
An outer box that houses the hot water storage tank;
A foam heat insulating material formed between the hot water storage tank and the outer box;
A method for manufacturing a hot water storage tank unit, comprising a first outer leg attached to a lower part of the outer box and supporting the hot water storage tank unit,
A flatness holding jig or a holding plate in which the lower part including the bottom plate of the outer box is held by a first jig, and the mounting position of the first outer leg of the bottom plate of the outer box is kept flat. Is suppressed by
The method for manufacturing a hot water storage tank unit, wherein the foam heat insulating material is filled and foamed between the hot water storage tank and the outer box.
JP2014055508A 2014-03-18 2014-03-18 Hot water storage tank unit and manufacturing method thereof Active JP6218654B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014055508A JP6218654B2 (en) 2014-03-18 2014-03-18 Hot water storage tank unit and manufacturing method thereof
CN201410406733.5A CN104930709A (en) 2014-03-18 2014-08-18 Hot water storage tank unit and method for manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014055508A JP6218654B2 (en) 2014-03-18 2014-03-18 Hot water storage tank unit and manufacturing method thereof

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2015046308A Division JP5753961B1 (en) 2015-03-09 2015-03-09 Hot water storage tank unit and manufacturing method thereof

Publications (3)

Publication Number Publication Date
JP2015178912A JP2015178912A (en) 2015-10-08
JP2015178912A5 JP2015178912A5 (en) 2016-03-17
JP6218654B2 true JP6218654B2 (en) 2017-10-25

Family

ID=54117989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014055508A Active JP6218654B2 (en) 2014-03-18 2014-03-18 Hot water storage tank unit and manufacturing method thereof

Country Status (2)

Country Link
JP (1) JP6218654B2 (en)
CN (1) CN104930709A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6979341B2 (en) * 2017-11-22 2021-12-15 日立グローバルライフソリューションズ株式会社 Hot water storage tank unit and equipment equipped with it

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58160758A (en) * 1982-03-18 1983-09-24 Matsushita Electric Ind Co Ltd Method of heat insulation of hot water storing tank
JPS6277545A (en) * 1985-09-30 1987-04-09 Yazaki Corp Manufacture of heat insulating layer for use in fluid container
CA2149346C (en) * 1995-05-15 2000-02-22 Hemant D. Kale Storage tank for water heaters and the like with filling dip tube
AU762874B2 (en) * 1999-05-20 2003-07-10 Water Heater Innovations, Inc. Method of manufacturing a water heater
JP4869650B2 (en) * 2005-07-28 2012-02-08 ホシザキ電機株式会社 Sheet metal connection structure in box-like assembly
DE202005013318U1 (en) * 2005-08-24 2007-01-04 Glen Dimplex Deutschland Gmbh Electrically-heated domestic hot water storage tank, includes accommodation for plug and cable preventing projection beyond rear wall of casing
JP4687522B2 (en) * 2006-03-16 2011-05-25 株式会社デンソー Hot water storage tank unit
JP2011527740A (en) * 2008-02-22 2011-11-04 ダウ グローバル テクノロジーズ エルエルシー Heat storage device
CN101943466B (en) * 2010-09-03 2012-11-21 中国科学院过程工程研究所 Phase-change heat-storage energy-saving electric water heater
JP5951258B2 (en) * 2012-01-06 2016-07-13 リンナイ株式会社 Hot water storage water heater
JP2013152033A (en) * 2012-01-24 2013-08-08 Noritz Corp Hot water storage unit
JP5846951B2 (en) * 2012-02-14 2016-01-20 株式会社コロナ Equipment installation equipment
JP2013221643A (en) * 2012-04-13 2013-10-28 Hitachi Appliances Inc Liquid storage unit, and water heater
JP6052854B2 (en) * 2012-07-31 2016-12-27 株式会社長府製作所 Hot water storage hot water supply unit
JP5753961B1 (en) * 2015-03-09 2015-07-22 日立アプライアンス株式会社 Hot water storage tank unit and manufacturing method thereof

Also Published As

Publication number Publication date
CN104930709A (en) 2015-09-23
JP2015178912A (en) 2015-10-08

Similar Documents

Publication Publication Date Title
JP5753961B1 (en) Hot water storage tank unit and manufacturing method thereof
KR102096514B1 (en) Thermally-insulating sealed tank built into a load-bearing structure
RU2741688C1 (en) Method for producing heat-insulating barrier for vessel wall and heat-insulating barrier produced thereby
KR101337643B1 (en) System and method to control Liquefied Natural Gas storage tank
KR101751837B1 (en) Securing device for lng storage tank
JP6140048B2 (en) Hot water storage tank unit
KR101616389B1 (en) Cargo tank structuer and setting up method of the same
JP6218654B2 (en) Hot water storage tank unit and manufacturing method thereof
AU2014286010B2 (en) Lagging element suited to the creation of an insulating barrier in a sealed and insulating tank
JP6405144B2 (en) Hot water storage tank unit
JP2017032176A (en) Water heater and manufacturing method of the same
US11971140B2 (en) Insulating wall fixing device of liquefied natural gas storage tank
JP2016048136A (en) Hot water tank unit
JP6435223B2 (en) Hot water storage tank unit
JP6596529B2 (en) Hot water storage tank unit
KR101874366B1 (en) Insulation board and lng storage tank having the same
KR101616369B1 (en) Block Installing Apparatus for Liquefied Gas Storage Tank
JP5217495B2 (en) Cylindrical tank skid prevention device
JP2013167327A (en) Cold reserving structure of liquefied gas tank, the liquefied gas tank, and float structure
KR100937682B1 (en) Side wall and different view form of construction work of heat storaging tank
KR101096610B1 (en) Side wall for heat storaging tank
KR101825297B1 (en) Combination structure for insulation system of membrane type lng carrier
JP6524301B2 (en) Hot water storage tank unit
JP6324826B2 (en) Hot water storage tank unit
KR102426550B1 (en) Insulation system of self supporting type tank

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20160129

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20160129

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20160715

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20161109

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20161122

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170119

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A132

Effective date: 20170613

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170731

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20170912

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20170926

R150 Certificate of patent or registration of utility model

Ref document number: 6218654

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350