JP2009024986A - Storage type water heater - Google Patents

Storage type water heater Download PDF

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JP2009024986A
JP2009024986A JP2007191718A JP2007191718A JP2009024986A JP 2009024986 A JP2009024986 A JP 2009024986A JP 2007191718 A JP2007191718 A JP 2007191718A JP 2007191718 A JP2007191718 A JP 2007191718A JP 2009024986 A JP2009024986 A JP 2009024986A
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hot water
water storage
storage tank
main body
jetting means
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JP5194604B2 (en
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Tomoaki Kitano
智章 北野
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Panasonic Corp
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Panasonic Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage type water heater having an inexpensive jet means, simplifying the structure of the jet means and improving the diffusion performance of hot water stored in a hot water storage tank, whereby in the whole hot water storage tank, hot water is stored in a high-temperature laminated layer to improve the thermal capacity of the whole hot water storage tank, so that the energy efficiency can be improved and the electric charge is lowered. <P>SOLUTION: This storage water heater includes: a heating device 1 for heating water to make hot water; a circulating pump 3 for circulating the hot water of the heating device 1; a pipeline 4 for carrying the hot water by the circulating pump 3; a three-way valve 5 for switching the hot water carried from the pipeline; and the hot water storage tank 2 storing the hot water through the three-way valve 5, wherein the jet means 6 is disposed to cause the hot water to flow into the hot water storage tank 2 uniformly like a surface in the radial direction to thereby improve diffusion performance of hot water stored in the hot water storage tank. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、貯湯タンク内に湯水を流入する噴出手段を有する貯湯式給湯機に関するものである。   The present invention relates to a hot water storage type hot water heater having a jetting means for flowing hot water into a hot water storage tank.

図６（ａ）、（ｂ）に示すように、従来の噴出手段１の構造は、湯水を流入する配管部２と、本体部３と、拡散部４からを形成されており、シール部材５で貯湯タンク（図示せず）との接続部の気密性を保持している。   As shown in FIGS. 6A and 6B, the structure of the conventional jetting means 1 is formed of a pipe part 2 through which hot water flows, a main body part 3 and a diffusion part 4, and a seal member 5. Thus, the airtightness of the connecting portion with the hot water storage tank (not shown) is maintained.

また、図７（ａ）、（ｂ）に示すように、の拡散部４の構造には、断面ａーａ部の拡散穴４ａと断面ｂーｂ部の拡散穴４ｂに複数の拡散穴が形成され、加熱装置（図示せず）によって作られた湯を貯湯タンク（図示せず）内へ流入され、噴出手段１によりお湯を半径方向に拡散し、貯めるようにしている。   Further, as shown in FIGS. 7A and 7B, the structure of the diffusion part 4 includes a plurality of diffusion holes in the diffusion hole 4a in the section aa and the diffusion hole 4b in the section bb. The hot water formed and heated by a heating device (not shown) is introduced into a hot water storage tank (not shown), and the hot water is diffused in the radial direction by the jetting means 1 and stored.

また、噴出手段１の構造は、配管部２と本体３は、ロウ付けにより溶接され、拡散部４は、本体部３と機械的にカシメ加工され接続する構成になっている（例えば、特許文献１参照）。
特開２００１ー２３７６５９号公報 Further, the structure of the ejection means 1 is such that the piping part 2 and the main body 3 are welded by brazing, and the diffusion part 4 is mechanically crimped and connected to the main body part 3 (for example, patent document). 1).
JP 2001-237659 A

加熱装置によって作られた湯を貯める貯湯タンク内の拡散部４は、１ｍｍ以下の薄板絞り加工でしか形成できないため、湯を拡散する部分の肉厚が薄いために、拡散力が弱く、貯湯タンク内へ流入される湯が、半径方向へ面状均一になる難く、貯湯タンク全体を高温積層に貯湯し難にくくなるため、貯湯タンク全体の熱容量を減少するので、エネルギー効率が悪化し、電気代が高くなってしまうことや、部品構成が湯水にさらされるため、耐腐食性金属の高価な材質を使うことや、板金絞り、切削加工精度が難しく、接続加工にも溶接やカシメ加工を施すためコストが高価になってしまい、大量生産に不向きな噴出手段の構造になってしまうという課題を有していた。   The diffusion part 4 in the hot water storage tank for storing the hot water produced by the heating device can only be formed by thin plate drawing processing of 1 mm or less, so the thickness of the part where the hot water is diffused is thin, so the diffusion power is weak, and the hot water storage tank The hot water flowing into the inside of the hot water tank is less likely to be uniform in the radial direction, making it difficult to store the entire hot water storage tank in a high-temperature stack, reducing the heat capacity of the entire hot water storage tank. Because it is expensive, and the component structure is exposed to hot water, it is difficult to use expensive materials such as corrosion-resistant metals, sheet metal drawing, cutting accuracy is difficult, and welding and caulking are also performed for connection processing The problem is that the cost becomes expensive and the structure of the ejection means is unsuitable for mass production.

本発明は、前記従来の課題を解決するものであり、噴出手段の構造を簡素化し、貯湯タンクに貯める湯の拡散性を向上することで、貯湯タンク全体を高温積層に湯を貯めるため、貯湯タンク全体の熱容量を向上できるので、エネルギー効率も向上でき、電気代も安くすむ、安価な噴出手段を有する貯湯式給湯機を提供することを目的とする。   The present invention solves the above-described conventional problems, and simplifies the structure of the jetting means and improves the diffusibility of hot water stored in the hot water storage tank. It is an object of the present invention to provide a hot water storage type hot water heater having an inexpensive jetting means that can improve the energy capacity of the tank as a whole and can also improve energy efficiency and reduce the electricity bill.

前記従来の課題を解決するために、本発明の噴出手段は、水を加熱し、お湯にする加熱装置と、前記加熱装置の湯水を循環する循環ポンプと、前記循環ポンプにより湯水を搬送する配管と、前記配管から搬送される湯水を切り替える三方弁と、前記三方弁により湯水を貯える貯湯タンクとを備え、前記貯湯タンク内に湯水を半径方向へ面状均一に流入する噴出手段を配設したことを特徴とする。   In order to solve the above-mentioned conventional problems, the ejection means of the present invention includes a heating device that heats water to make hot water, a circulation pump that circulates hot water in the heating device, and a pipe that conveys hot water by the circulation pump And a three-way valve for switching hot water conveyed from the pipe, and a hot water storage tank for storing hot water by the three-way valve, and a jetting means for uniformly flowing the hot water into the radial direction in a plane is disposed in the hot water storage tank. It is characterized by that.

これによって、噴出手段の構造を簡素化し、貯湯タンクに貯める湯の拡散性を向上することで、貯湯タンク全体の熱容量を向上し、エネルギー効率も向上でき、安価な噴出手段を有する貯湯式給湯機を提供することができる。   This simplifies the structure of the jetting means and improves the diffusibility of hot water stored in the hot water storage tank, thereby improving the overall heat capacity of the hot water storage tank and improving the energy efficiency. Can be provided.

本発明の貯湯式給湯機は、噴出手段の構造を簡素化し、貯湯タンクに貯める湯の拡散性を向上することで、貯湯タンク全体の熱容量を向上し、エネルギー効率も向上でき、安価な噴出手段を有する貯湯式給湯機を提供することができる。   The hot water storage type water heater of the present invention simplifies the structure of the jetting means and improves the diffusibility of hot water stored in the hot water storage tank, thereby improving the heat capacity of the entire hot water storage tank, improving energy efficiency, and inexpensive jetting means. It is possible to provide a hot water storage type water heater having

第１の発明の貯湯式給湯機は、水を加熱し、お湯にする加熱装置と、前記加熱装置の湯水を循環する循環ポンプと、前記循環ポンプにより湯水を搬送する配管と、前記配管から搬送される湯水を切り替える三方弁と、前記三方弁により湯水を貯える貯湯タンクとを備え、前記貯湯タンク内に湯水を半径方向へ面状均一に流入する噴出手段を配設したことにより、貯湯タンクに貯める湯の拡散性を向上することができる。   A hot water storage type water heater according to a first aspect of the present invention includes a heating device that heats water into hot water, a circulation pump that circulates hot water in the heating device, a pipe that conveys hot water using the circulation pump, and a conveyance from the pipe Provided with a three-way valve for switching hot and cold water and a hot water storage tank for storing hot water by the three-way valve, and provided with a jetting means for uniformly flowing hot water in a radial direction in the hot water storage tank. The diffusibility of the hot water stored can be improved.

第２の発明の貯湯式給湯機の噴出手段は、貯湯タンク内の上方と下方に複数は配設したことにより、貯湯タンク内に貯める湯水が確実に積層を形成することができる。   A plurality of the jetting means of the hot water storage type hot water supply apparatus of the second invention are arranged above and below the hot water storage tank, so that the hot water stored in the hot water storage tank can surely form a stack.

第３の発明の貯湯式給湯機の噴出手段は、本体部と、前記本体部の開口部を閉止する蓋部と、前記本体部と前記蓋部を固定し連結する固定ピンを配設したことにより、確実に前記本体部と前記蓋部は、固定することができる。   The jetting means of the hot water storage type hot water heater of the third invention is provided with a main body, a lid for closing the opening of the main body, and a fixing pin for fixing and connecting the main body and the lid. Thus, the main body and the lid can be securely fixed.

第４の発明の貯湯式給湯機の噴出手段の本体部には、拡散穴部が複数設けられ、前記噴出穴の１部をラッパ形状に配設したことにより、貯湯タンクへ流入する湯の拡散力は向上することができる。   The main body of the spraying means of the hot water storage type hot water heater of the fourth invention is provided with a plurality of diffusion holes, and one part of the spray holes is arranged in a trumpet shape, thereby diffusing hot water flowing into the hot water storage tank. Power can be improved.

第５の発明の貯湯式給湯機の噴出手段の本体部と蓋部は、成型材質を用いたことにより、複雑な形状も簡単に形成することができる。   The main body part and the lid part of the jetting means of the hot water storage type hot water heater of the fifth invention can be easily formed in a complicated shape by using a molding material.

第６の発明の貯湯式給湯機の噴出手段の固定ピンは、Ｃ型形状で弾性を有した材質を用いたことにより、貯湯タンク内の湯水にさらされ、熱収縮による樹脂部の割れや抜けを防止することができる。   The fixing pin of the jetting means of the hot water storage type hot water heater according to the sixth aspect of the invention is made of a C-shaped and elastic material, so that it is exposed to hot water in the hot water storage tank, and the resin portion is cracked or pulled out due to thermal contraction. Can be prevented.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の実施の形態１における噴出手段を有する貯湯式給湯機の構成図である。図１において、水を加熱し、湯にする加熱装置１と、前記加熱装置１の湯水を循環する循環ポンプ３と、前記循環ポンプ３により湯水を搬送する配管４と、前記配管４から搬送される湯水を切り替える三方弁５と、前記三方弁５により湯水を貯える貯湯タンク２とを備え、前記貯湯タンク２内に湯水を半径方向へ面状均一に流入する噴出手段６を配設されている。また、噴出手段６は、貯湯タンク２内の上方と下方に複数は配設されている。 (Embodiment 1)
FIG. 1 is a configuration diagram of a hot water storage type water heater having a jetting unit according to Embodiment 1 of the present invention. In FIG. 1, a heating device 1 that heats water to make hot water, a circulation pump 3 that circulates hot water of the heating device 1, a pipe 4 that conveys hot water by the circulation pump 3, and a pipe 4 that is fed from the pipe 4. And a hot water storage tank 2 for storing hot water by the three-way valve 5, and a jetting means 6 is provided in the hot water storage tank 2 to uniformly flow the hot water into the surface in a radial direction. . A plurality of jetting means 6 are disposed above and below the hot water storage tank 2.

図３〜５は、本発明の実施の形態１における噴出手段の構成図である。図３〜４において噴出手段６は、本体部６ａと、前記本体部６ａの開口部を閉止する蓋部６ｂと、前記本体部６ａと前記蓋部６ｂを固定し連結する固定ピン６ｃで構成され、加熱装置により、加熱された湯を供給する配管４ｃと噴出手段６は、配管４ｃの凸部４ｄに連結ピン７により軸方向を拘束され、固定されている。また、配管４ｃにシール部材８を配設され、シール部材８ａで貯湯タンク２との接続部の気密性を保持している。   3-5 is a block diagram of the ejection means in Embodiment 1 of this invention. 3-4, the ejection means 6 is comprised by the main-body part 6a, the cover part 6b which closes the opening part of the said main-body part 6a, and the fixed pin 6c which fixes and connects the said main-body part 6a and the said cover part 6b. The piping 4c for supplying hot water heated by the heating device and the jetting means 6 are fixed to the convex portion 4d of the piping 4c with the connecting pin 7 restricted in the axial direction. Moreover, the sealing member 8 is arrange | positioned by the piping 4c, and the airtightness of the connection part with the hot water storage tank 2 is hold | maintained by the sealing member 8a.

また、噴出手段６の本体部６ａには、拡散穴部６ｄ、拡散穴部６ｅが複数設けられ、前記拡散穴６ｄの１部をラッパ形状に配設されている。また、噴出手段６の本体部６ａと蓋部６ｂは、成型材質を用いられている。また、噴出手段６の固定ピン６ｃは、Ｃ型形状で
弾性を有した材質を用いられている。 The main body 6a of the ejection means 6 is provided with a plurality of diffusion holes 6d and diffusion holes 6e, and a part of the diffusion hole 6d is arranged in a trumpet shape. The main body 6a and the lid 6b of the ejection means 6 are made of a molding material. Further, the fixing pin 6c of the ejection means 6 is made of a C-shaped and elastic material.

以上のように構成された噴出手段を有する貯湯式給湯機に関して、貯湯式給湯機の動作および作用を説明する。   Regarding the hot water storage type hot water heater having the jetting means configured as described above, the operation and action of the hot water storage type hot water heater will be described.

まず、図１〜５において、利用者が制御手段（例えばリモコン図示なし）により、設定温度に湯水を沸き上げる指示を出す。次に、水を加熱し、お湯にする加熱装置１は、貯湯タンク５から湯水を循環ポンプ３により、配管４を介して加熱装置１へと供給され、加熱装置内で加熱され、水からお湯に変え配管４ａを介して、三方弁５に到達する。この時、加熱装置１に加熱されたお湯が、利用者の設定した湯温に達していない時は、三方弁５により、配管４ｂを介して、貯湯タンク２の下方に循環され、噴出手段６の拡散穴部６ｄと拡散穴部６ｅにより、半径方向に３６０°面状均一に噴出し流入される。   First, in FIGS. 1 to 5, a user gives an instruction to boil hot water to a set temperature by a control means (for example, a remote controller is not shown). Next, the heating device 1 that heats water to make hot water supplies hot water from the hot water storage tank 5 to the heating device 1 via the piping 4 by the circulation pump 3, is heated in the heating device, and is heated from water to hot water. Instead, the three-way valve 5 is reached via the pipe 4a. At this time, when the hot water heated by the heating device 1 does not reach the hot water temperature set by the user, the hot water is circulated below the hot water storage tank 2 by the three-way valve 5 via the pipe 4b. The diffusion hole 6d and the diffusion hole 6e are jetted and flowed in a 360 ° plane uniformly in the radial direction.

次に図２〜５において、加熱装置が湯水を設定温度まで上昇できたら、三方弁５は、配管４ｃを介して貯湯タンク２の上方へ循環され、噴出手段６の拡散穴部６ｄと拡散穴部６ｅにより、円周方向に３６０°面状均一に噴出し流入される。流入された湯は、貯湯タンク内に積層状態で湯を貯めることができる。積層に湯を貯めることで、水と混ざることなく高温のお湯を保てるので、熱容量も大きく保てエネルギー効率も向上するので電気代が安くなる。   Next, in FIGS. 2 to 5, when the heating device can raise the hot water to the set temperature, the three-way valve 5 is circulated above the hot water storage tank 2 through the pipe 4 c, and the diffusion hole portion 6 d and the diffusion hole of the ejection means 6. The portion 6e is jetted and flowed in a 360 ° plane uniformly in the circumferential direction. The introduced hot water can be stored in a hot water storage tank in a stacked state. By storing hot water in the stack, hot water can be kept without mixing with water, so heat capacity can be kept large and energy efficiency can be improved, resulting in lower electricity costs.

また、図３より、噴出手段６は、本体部６ａと蓋部６ｂを成型材質にしたことにより、形状を自由に形成でき、簡単な構造で、対腐食性もなく安価な材質を選択できる。また、図４より、貯湯タンク１内に高温の湯が貯めているので、噴出手段６の固定ピン６ｃは、高温の湯にさらされるので、熱収縮に強いＣ型形状で弾性を有した材料により、熱応力を緩和できるので、成型材質の割れ、抜けに対して効果があり、固定ピン６ｃの長さも、本体部６ａの横幅より、必ず小さい寸法にすることで、噴出手段６の本体部６にシール部材８ａを嵌める時に傷つけないようにしている。   Further, as shown in FIG. 3, the ejection means 6 can be formed freely by forming the main body portion 6a and the lid portion 6b into a molding material, and can be selected from an inexpensive material with a simple structure and no corrosion resistance. Further, as shown in FIG. 4, since hot water is stored in the hot water storage tank 1, the fixing pin 6c of the jetting means 6 is exposed to the hot water, so that it is a C-shaped material that is resistant to heat shrinkage and has elasticity. Since the thermal stress can be relieved, it is effective for cracking and detachment of the molding material, and the length of the fixing pin 6c is always smaller than the width of the main body 6a. 6 is prevented from being damaged when the sealing member 8a is fitted.

また、図５（ａ）噴出手段６の本体部６ａのｄーｄ断面部の拡散穴部６ｄは、ラッパ形状を形状しているので、さらに貯湯タンク内に流入した湯を３６０°半径方向へ拡散でき、図５（ｂ）噴出手段６の本体部６ａのｅーｅ断面部の拡散穴部６ｅにより、３６０°方向に隙間の部分の湯を噴出しているので、確実に貯湯タンク１内を高温の湯に水が混ざることがなく積層に湯を貯めることができる。   Further, the diffusion hole 6d in the dd cross section of the main body 6a of the jetting means 6 in FIG. 5 (a) has a trumpet shape, so that the hot water flowing into the hot water storage tank further flows in the 360 ° radial direction. Since the diffusion hole 6e in the section ee of the main body 6a of the jetting means 6 in FIG. Hot water can be stored in the laminate without mixing water with hot water.

以上のように、本発明にかかる貯湯式給湯機は、噴出手段の構造を簡素化し、貯湯タンクに貯める湯の拡散性を向上することで、貯湯タンク全体の熱容量を向上し、エネルギー効率も向上できるので、電気代が安く済む。また、電気ヒーター式加熱装置を利用した貯湯式給湯機に広く適用することができる。   As described above, the hot water storage type water heater according to the present invention improves the heat capacity of the hot water storage tank and improves energy efficiency by simplifying the structure of the jetting means and improving the diffusibility of hot water stored in the hot water storage tank. Because you can, you can save on electricity. Further, the present invention can be widely applied to a hot water storage type water heater using an electric heater type heating device.

本発明の実施の形態１における貯湯式給湯機の構成図The block diagram of the hot water storage type hot water heater in Embodiment 1 of this invention 本発明の実施の形態１における貯湯式給湯機の他の状態の構成図The block diagram of the other state of the hot water storage type water heater in Embodiment 1 of this invention 本発明の実施の形態１における噴出手段の構成図The block diagram of the ejection means in Embodiment 1 of this invention （ａ）本発明の実施の形態１における噴出手段の断面図（ｂ）同噴出手段の本体部の固定ピン挿入の局部断面図(A) Cross-sectional view of the ejection means in Embodiment 1 of the present invention (b) Local cross-sectional view of insertion of a fixing pin in the main body of the ejection means （ａ）図３のｄーｄ断面図（ｂ）図３のｅーｅ断面図（ｃ）本発明の実施の形態１における拡散穴部の矢視図(A) dd cross-sectional view of FIG. 3 (b) ee cross-sectional view of FIG. 3 (c) Arrow view of the diffusion hole in Embodiment 1 of the present invention （ａ）従来の貯湯式給湯機の噴出手段の構成図（ｂ）従来の貯湯式給湯機の噴出手段の断面図(A) Configuration diagram of jetting means of conventional hot water storage type hot water heater (b) Cross section of jetting means of conventional hot water storage type hot water heater （ａ）図６（ａ）のａーａ断面図（ｂ）図６（ａ）のｂーｂ断面図(A) aa sectional view of FIG. 6 (a) (b) bb sectional view of FIG. 6 (a)

符号の説明Explanation of symbols

１ 加熱装置
２ 貯湯タンク
３ 循環ポンプ
４ 配管
４ａ 配管
４ｂ 配管
４ｃ 配管
５ 三方弁
６ 噴出手段

DESCRIPTION OF SYMBOLS 1 Heating device 2 Hot water storage tank 3 Circulation pump 4 Piping 4a Piping 4b Piping 4c Piping 5 Three-way valve 6 Injection means

Claims (6)

水を加熱し、湯にする加熱装置と、前記加熱装置の湯水を循環する循環ポンプと、前記循環ポンプにより湯水を搬送する配管と、前記配管から搬送される湯水を切り替える三方弁と、前記三方弁により湯水を貯える貯湯タンクとを備え、前記貯湯タンク内に湯水を面状均一に流入する噴出手段を配設したことを特徴とする貯湯式給湯機。 A heating device that heats water into hot water, a circulation pump that circulates the hot water of the heating device, a pipe that conveys hot water with the circulation pump, a three-way valve that switches hot water conveyed from the pipe, and the three-way A hot water storage water heater comprising a hot water storage tank for storing hot water by a valve, and provided with jetting means for flowing hot water uniformly into the hot water storage tank. 噴出手段は、貯湯タンク内の上方と下方に複数は配設したことを特徴とした請求項１に記載の貯湯式給湯機。 2. A hot water storage type hot water supply apparatus according to claim 1, wherein a plurality of jetting means are disposed above and below the hot water storage tank. 噴出手段は、本体部と、前記本体部の開口部を閉止する蓋部と、前記本体部と前記蓋部を固定し連結する固定ピンを配設したことを特徴とする請求項１または２記載の貯湯式給湯機。 The jetting means includes a main body, a lid for closing the opening of the main body, and a fixing pin for fixing and connecting the main body and the lid. Hot water storage water heater. 噴出手段の本体部には、拡散穴部が複数設けられ、前記噴出穴の１部をラッパ形状に配設したことを特徴とする請求項１〜３のいずれか１項に記載の貯湯式給湯機。 The hot water storage hot water supply according to any one of claims 1 to 3, wherein a plurality of diffusion holes are provided in the main body of the jetting means, and one part of the jetting holes is arranged in a trumpet shape. Machine. 噴出手段の本体部と蓋部は、成型材質を用いたことを特徴とする請求項１〜４のいずれか１項に記載の貯湯式給湯機。 The hot water storage type hot water supply device according to any one of claims 1 to 4, wherein a molding material is used for the main body portion and the lid portion of the ejection means. 噴出手段の固定ピンは、Ｃ型形状で弾性を有した材質を用いたことを特徴とする請求項１〜４のいずれか１項に記載の貯湯式給湯機。 The hot water storage type hot water supply apparatus according to any one of claims 1 to 4, wherein the fixing pin of the jetting means is made of a C-shaped and elastic material.
JP2007191718A 2007-07-24 2007-07-24 Hot water storage water heater Active JP5194604B2 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872838A (en) * 1981-10-24 1983-04-30 Shimizu Constr Co Ltd Water supply and intake equipment of temperature stratified heat accumulator
JPS5963444A (en) * 1982-10-04 1984-04-11 Matsushita Electric Ind Co Ltd Hot-water boiler
JPS6315449U (en) * 1986-07-11 1988-02-01
JPS63150554A (en) * 1986-12-16 1988-06-23 Matsushita Electric Ind Co Ltd Heat pump type hot water supplier
JPH1026414A (en) * 1996-07-10 1998-01-27 Kawasaki Steel Corp Vertical type heat accumulation tank
JP2007093207A (en) * 2006-12-22 2007-04-12 Matsushita Electric Ind Co Ltd Heat pump hot-water supply unit
JP2007107750A (en) * 2005-10-11 2007-04-26 Matsushita Electric Ind Co Ltd Heat pump water heater

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5872838A (en) * 1981-10-24 1983-04-30 Shimizu Constr Co Ltd Water supply and intake equipment of temperature stratified heat accumulator
JPS5963444A (en) * 1982-10-04 1984-04-11 Matsushita Electric Ind Co Ltd Hot-water boiler
JPS6315449U (en) * 1986-07-11 1988-02-01
JPS63150554A (en) * 1986-12-16 1988-06-23 Matsushita Electric Ind Co Ltd Heat pump type hot water supplier
JPH1026414A (en) * 1996-07-10 1998-01-27 Kawasaki Steel Corp Vertical type heat accumulation tank
JP2007107750A (en) * 2005-10-11 2007-04-26 Matsushita Electric Ind Co Ltd Heat pump water heater
JP2007093207A (en) * 2006-12-22 2007-04-12 Matsushita Electric Ind Co Ltd Heat pump hot-water supply unit

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