JP4971682B2

JP4971682B2 - Water heater

Info

Publication number: JP4971682B2
Application number: JP2006134699A
Authority: JP
Inventors: 正信斉藤
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 2006-05-15
Filing date: 2006-05-15
Publication date: 2012-07-11
Anticipated expiration: 2026-05-15
Also published as: JP2007303768A

Abstract

PROBLEM TO BE SOLVED: To provide a hot water storage tank of a water heater capable of improving heat-retaining/heat insulating effect without increasing a thickness of an expandable molding heat-insulating material. SOLUTION: This water heater comprises a hot water storage tank 12 to which a plurality of pipes 13, 18, 23 are connected and which stores hot water heated by a heating device 4, and an outer hull of the hot water storage tank is coated with the expandable molding heat insulating materials 32, 33 to obtain a heat-retaining/heat insulating constitution. Reflecting films 36, 37 for reflecting the heat from the hot water storage tank 12 to a hot water storage tank 12 side are formed on inner surfaces of the expandable molding heat insulating materials 32, 33 at the hot water storage 12 side. A gap X for forming an air layer is formed between the reflecting films 36, 37 and an outer surface of the hot water storage tank 12. COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、二酸化炭素などを冷媒とするヒートポンプ式給湯装置や貯湯式電気温水器等の給湯装置に関し、特に貯湯タンクの断熱構造に関する。 The present invention relates to a hot water supply device such as a heat pump type hot water supply device or a hot water storage type electric water heater using carbon dioxide or the like as a refrigerant, and more particularly to a heat insulation structure of a hot water storage tank.

従来、この種の給湯装置において、貯湯タンクの保温や断熱のため、貯湯タンクの外面にグラスウールなどの面状の断熱材を巻き付ける構成のもの（例えば、特許文献１参照）や、型成形により上下及び前後の４個に分割形成された発泡性成形断熱材を用いて貯湯タンクの外側全体を覆う構成のもの（例えば、特許文献２参照）が知られている。
特開平７−２４３７０５号公報特開２００２−３１０５１１号公報 Conventionally, in this type of hot water supply apparatus, in order to keep the hot water storage tank warm and to insulate, a surface heat insulating material such as glass wool is wound around the outer surface of the hot water storage tank (for example, see Patent Document 1) And the thing (for example, refer patent document 2) of the structure which covers the whole outer side of a hot water storage tank using the foaming shaping | molding heat insulating material dividedly formed by four front and back is known.
JP-A-7-243705 JP 2002-310511 A

上記特許文献１に記載された貯湯タンクの断熱構造では、高温部である貯湯タンク上部の放熱ロスが大きくなる難点があり、また、特許文献１に記載された貯湯タンクの断熱構造では、型成形により４個に分割形成された発泡性成形断熱材を用いるが、保温・断熱性を高めるために肉厚寸法を大きしなければ、やはり、放熱ロスが大きくなる。 In the heat insulation structure of the hot water storage tank described in the above-mentioned Patent Document 1, there is a problem that the heat dissipation loss at the upper part of the hot water storage tank, which is a high-temperature part, becomes large. However, if the wall thickness is not increased in order to improve heat insulation and heat insulation, the heat dissipation loss will be increased.

本発明は、上述の実情に鑑みてなされたものであり、発泡性成形断熱材の肉厚を増加させることなく、保温・断熱効果を高めることが可能な給湯装置の貯湯タンクを提供できるようにすることを目的としている。 This invention is made in view of the above-mentioned situation, and can provide the hot water storage tank of the hot water supply apparatus which can improve a heat insulation and heat insulation effect, without increasing the thickness of a foaming molding heat insulating material. The purpose is to do.

請求項１に記載の発明は、複数の配管が接続され、加熱装置で加熱された湯を貯留する貯湯タンクを備え、この貯湯タンクの外郭を発泡性成形断熱材により被覆して保温・断熱する構成の給湯装置において、この発泡性成形断熱材は上下もしくは左右に分割形成された2つの発泡性成形断熱材から構成され、これら2つの発泡性成形断熱材は貯湯タンクの外郭に概ね沿わせ且つこのタンクに接続された前記配管を囲む形状の窪み部を夫々備えており、この窪み部においては、前記貯湯タンク側となる内表面に、貯湯タンクからの熱を貯湯タンク側へ反射させるアルミ蒸着シートの反射膜が形成され、この反射膜と前記貯湯タンク並びにこのタンクにつながれた配管の外表面との間に空気層が形成される間隙が設けられるように、2つの発泡性成形断熱材の窪み部を嵌合させたことを特徴とする。
The invention described in claim 1 is provided with a hot water storage tank in which a plurality of pipes are connected and stores hot water heated by a heating device, and the outer shell of the hot water storage tank is covered with a foamable heat insulating material for heat insulation and heat insulation. In the hot water supply apparatus having the configuration, the foamable heat insulating material is composed of two foamable heat insulating materials that are divided into upper and lower sides or left and right, and these two foamable heat insulating materials are generally along the outer wall of the hot water storage tank and Each of the recesses is provided with a hollow portion that surrounds the pipe connected to the tank, and in the hollow portion, an aluminum vapor deposition that reflects heat from the hot water storage tank to the hot water storage tank side on the inner surface on the hot water storage tank side. Two foamable moldings are formed so that a reflective film is formed on the sheet and an air layer is formed between the reflective film and the outer surface of the hot water storage tank and piping connected to the tank. Characterized in that fitted to the recessed portion of the heated material.

本発明は、複数の配管が接続され、加熱装置で加熱された湯を貯留する貯湯タンクを備え、この貯湯タンクの外郭を発泡性成形断熱材により被覆して保温・断熱する構成の給湯装置において、この発泡性成形断熱材は上下もしくは左右に分割形成された2つの発泡性成
形断熱材から構成され、これら2つの発泡性成形断熱材は貯湯タンクの外郭に概ね沿わせ
且つこのタンクに接続された前記配管を囲む形状の窪み部を夫々備えており、この窪み部においては、前記貯湯タンク側となる内表面に、貯湯タンクからの熱を貯湯タンク側へ反射させるアルミ蒸着シートの反射膜が形成され、この反射膜と前記貯湯タンク並びにこのタンクにつながれた配管の外表面との間に空気層が形成される間隙が設けられるように、2つの発泡性成形断熱材の窪み部を嵌合させたので、貯湯タンクやそれに接続された配管
から放射される熱を発泡性成形断熱材の内表面の反射膜により貯湯タンク側へ反射させるため、発泡性成形断熱材の肉厚寸法を増加させたりすることなく、貯湯タンクを効果的に保温・断熱することが可能になる。 The present invention provides a hot water supply apparatus having a structure in which a plurality of pipes are connected and a hot water storage tank for storing hot water heated by a heating device is provided, and an outer wall of the hot water storage tank is covered with a foaming molded heat insulating material to keep warm and insulate. The foamable heat insulating material is composed of two foamable heat insulating materials that are divided into upper and lower or left and right sides, and these two foamable heat insulating materials are generally along the outer shell of the hot water storage tank and connected to this tank. In addition, each of the recesses is provided with a reflective film of an aluminum vapor deposition sheet that reflects heat from the hot water storage tank to the hot water storage tank side on the inner surface on the hot water storage tank side. The two indented portions of the foamable heat-insulating material are formed so that a gap is formed between the reflective film and the hot water storage tank and the outer surface of the pipe connected to the tank. Since the heat is radiated from the hot water storage tank and the pipe connected to it, it is reflected to the hot water storage tank side by the reflective film on the inner surface of the foamable heat insulating material. It is possible to effectively insulate and insulate the hot water storage tank without increasing it.

また、発泡性成形断熱材の内表面の反射膜と前記貯湯タンクの外表面との間に空気層を形成するための間隙を設ければ、空気断熱効果が加味され、貯湯タンクを一層効果的に保温・断熱することが可能になる。 In addition, if a gap for forming an air layer is provided between the reflective film on the inner surface of the foamable heat insulating material and the outer surface of the hot water storage tank, the air heat insulating effect is added and the hot water storage tank becomes more effective. It is possible to insulate and insulate.

本発明は、発泡性成形断熱材の肉厚を増加させることなく、保温・断熱効果を高めることが可能な給湯装置の貯湯タンクを提供できるようにすることを目的として、複数の配管が接続され、加熱装置で加熱された湯を貯留する貯湯タンクを備え、この貯湯タンクの外郭を発泡性成形断熱材により被覆して保温・断熱する構成の給湯装置において、前記貯湯タンク側となる発泡性成形断熱材の内表面に、貯湯タンクからの熱を貯湯タンク側へ反射させる反射膜が形成されている構成であり、以下に本発明の実施形態について説明する。 An object of the present invention is to provide a hot water storage tank of a hot water supply device capable of enhancing the heat insulation and heat insulation effect without increasing the wall thickness of the foamable heat insulating material, and a plurality of pipes are connected. In a hot water supply apparatus comprising a hot water storage tank for storing hot water heated by a heating device, and covering and enclosing the outer wall of the hot water storage tank with a foamable molding heat insulating material, the foamable molding on the hot water storage tank side A reflection film for reflecting heat from the hot water storage tank to the hot water storage tank side is formed on the inner surface of the heat insulating material. Embodiments of the present invention will be described below.

次に、本発明に係る給湯装置の一実施例について、図１ないし図６に基づいて説明する。図１は本発明の一実施例を示す給湯装置の設置状態を説明する説明図、図２は全体構成の概略構成図、図３は断熱構造を施した状態の貯湯タンクの斜視図、図４は断熱構造を施した状態の貯湯タンクの縦断面図、図５は断熱構造を施した状態の冷媒対水熱交換器の斜視図、図６は断熱構造を施した状態の冷媒対水熱交換器の縦断面図である。 Next, one embodiment of a hot water supply apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram for explaining an installed state of a hot water supply apparatus according to an embodiment of the present invention, FIG. 2 is a schematic configuration diagram of the overall configuration, FIG. 3 is a perspective view of a hot water storage tank with a heat insulating structure, FIG. Is a longitudinal sectional view of a hot water storage tank with a heat insulating structure, FIG. 5 is a perspective view of a refrigerant to water heat exchanger with a heat insulating structure, and FIG. 6 is a refrigerant to water heat exchange with a heat insulating structure. It is a longitudinal cross-sectional view of a vessel.

図１において、ヒートポンプ式の給湯装置Ａは、ヒートポンプユニット１と、このヒートポンプユニット１に配管接続される貯湯タンクユニット２とで構成され、これらヒートポンプユニット１及び貯湯タンクユニット２は、通常、屋外に設置される。また、これらヒートポンプユニット１及び貯湯タンクユニット２は、共通の外装ケース内に一体に組み込む一体型とすることもできる。 In FIG. 1, a heat pump type hot water supply apparatus A is composed of a heat pump unit 1 and a hot water storage tank unit 2 connected by piping to the heat pump unit 1, and the heat pump unit 1 and the hot water storage tank unit 2 are usually outdoors. Installed. The heat pump unit 1 and the hot water storage tank unit 2 may be integrated into a common exterior case.

次に、図２を用いて説明すると、前記ヒートポンプユニット１は、外装ケース１Ａ内に、ロータリー２段圧縮機などの能力可変の圧縮機３、放熱器４Ａ、電動膨張弁などの減圧装置５、蒸発器６、アキュームレータ７、ヒートポンプ側制御装置８、前記蒸発器６に通風して空気と熱交換させる熱交換用送風機９、及び前記放熱器４Ａと熱交換を行う受熱器４Ｂ等が収容されており、前記圧縮機３、放熱器４Ａ、減圧装置５、蒸発器６及びアキュームレータ７は、冷媒配管１０にて環状に接続されており、二酸化炭素を冷媒として圧縮機３で超臨界圧に圧縮するヒートポンプサイクルＸを構成している。また、前記放熱器４Ａと受熱器４Ｂとは互いに一体化されて加熱装置としての冷媒対水熱交換器４を構成している。 Next, referring to FIG. 2, the heat pump unit 1 includes an outer case 1A, a variable capacity compressor 3 such as a rotary two-stage compressor, a radiator 4A, a decompression device 5 such as an electric expansion valve, An evaporator 6, an accumulator 7, a heat pump side control device 8, a heat exchanging fan 9 that ventilates the evaporator 6 and exchanges heat with air, a heat receiver 4B that exchanges heat with the radiator 4A, and the like are accommodated. The compressor 3, the radiator 4 A, the decompressor 5, the evaporator 6, and the accumulator 7 are connected in a ring shape by a refrigerant pipe 10, and are compressed to supercritical pressure by the compressor 3 using carbon dioxide as a refrigerant. A heat pump cycle X is configured. The radiator 4A and the heat receiver 4B are integrated with each other to constitute a refrigerant-to-water heat exchanger 4 as a heating device.

前記貯湯タンクユニット２は、タンク側外装ケース２Ａ内に、ステンレス鋼板製の縦長な貯湯タンク１２、給水配管１３、給水開閉弁１４、分岐給水配管１５、貯湯用配管１６、貯湯用循環ポンプ１７、追い焚き用配管１８、追い焚き用熱交換器１９、風呂水用配管２０、風呂水用循環ポンプ２１、追い焚き用循環ポンプ２２、給湯用配管２３、混合弁装置２４、風呂給湯開閉弁２５、タンク側制御装置２６等を収容している。 The hot water storage tank unit 2 has a vertically long hot water storage tank 12 made of a stainless steel plate, a water supply pipe 13, a water supply on / off valve 14, a branch water supply pipe 15, a hot water storage pipe 16, a hot water circulation pump 17, in a tank side outer case 2A. Reheating pipe 18, reheating heat exchanger 19, bath water pipe 20, bath water circulation pump 21, reheating circulation pump 22, hot water supply pipe 23, mixing valve device 24, bath hot water on / off valve 25, The tank side control device 26 and the like are accommodated.

前記給水配管１３及び貯湯用配管１６の出口部１６Ａが前記貯湯タンク１２の底部に接続され、貯湯用配管１６の入口部１６Ｂ、追い焚き用配管１８の出口部１８Ａ及び給湯用配管２３がそれぞれ前記貯湯タンク１２の頂部に接続されている。 The outlet 16A of the water supply pipe 13 and the hot water storage pipe 16 is connected to the bottom of the hot water storage tank 12, and the inlet part 16B of the hot water storage pipe 16, the outlet part 18A of the reheating pipe 18 and the hot water supply pipe 23 are respectively described above. It is connected to the top of the hot water storage tank 12.

２７は前記ヒートポンプ側制御装置８とタンク側制御装置２６とを配線接続する通信線、２８は台所用リモートコントローラ、２９は風呂用リモートコントローラであり、これら各リモートコントローラ２８、２９はタンク側制御装置２６に配線接続されている。３０は風呂を示している。 27 is a communication line for wiring connection between the heat pump side control device 8 and the tank side control device 26, 28 is a kitchen remote controller, 29 is a bath remote controller, and these remote controllers 28 and 29 are tank side control devices. 26 is connected by wiring. 30 indicates a bath.

ここで、台所などに設置してある蛇口（図示せず）を開けると、貯湯タンク１２内上部の高温の湯が水道圧で給湯用配管２３へ押し出され、給湯が行われると同時に、貯湯タンク１２内下部には、底部に接続された水道配管１３から水道水が給水される。 Here, when a faucet (not shown) installed in the kitchen or the like is opened, the hot water in the upper part of the hot water storage tank 12 is pushed out to the hot water supply pipe 23 by water pressure, and at the same time as hot water is supplied, Tap water is supplied to the lower part in 12 from a water pipe 13 connected to the bottom.

風呂３０に注湯する湯張りを行う場合は、風呂用リモートコントローラ２９の風呂湯張りスイッチ（図示せず）を押すと、貯湯タンク１２内上部から給湯用配管２３へ押し出された高温の湯が混合弁装置２４へ流れ、ここで分岐給水管１５から給水される水と混合されて、予め設定された温度の湯が風呂３０へ注湯され、所定の湯量が注湯されると湯張りが完了する。この風呂３０の湯張り時にも、湯張り運転の開始と同時に、貯湯タンク１２内下部には、底部に接続された水道配管１３から水道水が給水される。 When filling the bath 30 with hot water, if a bath hot water switch (not shown) of the remote controller 29 for bath is pressed, hot water pushed out from the upper part of the hot water storage tank 12 to the hot water supply pipe 23 is heated. It flows to the mixing valve device 24, where it is mixed with water supplied from the branch water supply pipe 15, hot water having a preset temperature is poured into the bath 30, and when a predetermined amount of hot water is poured, Complete. Even when the bath 30 is filled, tap water is supplied to the lower part of the hot water storage tank 12 from the water pipe 13 connected to the bottom at the same time as the start of the filling operation.

上記したように台所や風呂３０などの利用部への給湯が行われると、貯湯タンク１２内の高温の湯が消費され、貯湯タンク１２内における高温の湯の層が減少し、この高温の湯は貯湯タンク１２内の上部にのみ貯留し、貯湯タンク１２内の中間部や下部は、温度の低い湯或いは水が貯留された状態となる。 As described above, when hot water is supplied to a use section such as the kitchen or the bath 30, the hot water in the hot water storage tank 12 is consumed, and the hot water layer in the hot water storage tank 12 is reduced. Is stored only in the upper part of the hot water storage tank 12, and the intermediate part and the lower part of the hot water storage tank 12 are in a state where hot water or water having a low temperature is stored.

次に、お湯の沸き上げ運転について説明する。ヒートポンプユニット１の運転開始により、ヒートポンプサイクルＸの圧縮機３が起動すると、二酸化炭素の冷媒が圧縮機３によって２段圧縮され、この圧縮機３で圧縮されて吐出した超臨界圧の高温・高圧の液状の冷媒は放熱器４Ａで放熱して受熱器４Ｂを流れる水と熱交換し、その水を加熱する。 Next, hot water boiling operation will be described. When the compressor 3 of the heat pump cycle X is started by starting the operation of the heat pump unit 1, the carbon dioxide refrigerant is compressed in two stages by the compressor 3, and is compressed and discharged by the compressor 3. The liquid refrigerant radiates heat with the radiator 4A, exchanges heat with water flowing through the heat receiver 4B, and heats the water.

前記放熱器４Ａで放熱して温度の低下した冷媒は、減圧装置５で減圧されて低圧となった後、蒸発器６に流れ、蒸発器６で空気から吸熱して蒸発し、低温・低圧のガス状の冷媒となり、アキュームレータ７に流れ、このアキュームレータ７から圧縮機３に吸入され再び圧縮される。 The refrigerant whose temperature has been reduced by releasing heat from the radiator 4A is reduced in pressure by the decompression device 5 and becomes low pressure, and then flows into the evaporator 6 and is evaporated by absorbing heat from the air in the evaporator 6. It becomes a gaseous refrigerant, flows into the accumulator 7, is sucked into the compressor 3 from the accumulator 7, and is compressed again.

上述のヒートポンプユニット１の運転開始に伴い、貯湯タンクユニット２内の貯湯用循環ポンプ１７が起動し、この循環ポンプ１７の運転により、前記貯湯タンク１２内下部の低温或いは常温の水が、貯湯用配管１６の出口部１６Ａから貯湯用配管１６内へ流れ、貯湯用循環ポンプ１７を介して受熱器４Ｂへ流れ、ここで前記放熱器４Ａを流れる高温・高圧の冷媒と熱交換して加熱される。そして、この受熱器４Ｂで加熱された高温の湯は前記入口部１６Ｂから貯湯タンク１２内の上部に流入し、沸き上げ運転の時間の経過に伴って、貯湯タンク１２内には８０℃以上の湯の貯留量が徐々に増加し、この高温の湯の湯層が貯湯タンク１２内の下部に至ると沸き上げ運転が完了する。 With the start of operation of the heat pump unit 1, the hot water circulation pump 17 in the hot water storage tank unit 2 is activated, and the operation of the circulation pump 17 causes the low or normal temperature water in the lower part of the hot water storage tank 12 to be used for hot water storage. It flows into the hot water storage pipe 16 from the outlet 16A of the pipe 16, flows into the heat receiver 4B through the hot water circulation pump 17, and is heated by exchanging heat with the high-temperature and high-pressure refrigerant flowing through the radiator 4A. . And the hot water heated by this heat receiver 4B flows into the upper part of the hot water storage tank 12 from the said inlet part 16B, and 80 degreeC or more is contained in the hot water storage tank 12 with progress of the time of boiling operation. When the hot water storage amount gradually increases and the hot water layer reaches the lower part of the hot water storage tank 12, the boiling operation is completed.

次に、図３及び図４を用いて貯湯タンク１２の断熱構造について説明する。前記貯湯タンク１２は、それの外郭の全体が、前後に２分割形成された前部発泡性成形断熱材３２と後部発泡性成形断熱材３３により被覆されている。 Next, the heat insulation structure of the hot water storage tank 12 will be described with reference to FIGS. 3 and 4. The entire outer shell of the hot water storage tank 12 is covered with a front foamable molded heat insulating material 32 and a rear foamable molded heat insulating material 33 which are divided into two parts at the front and rear.

３４、３４は貯湯タンク１２の下部に設けられた複数の支持脚である。 Reference numerals 34 and 34 denote a plurality of support legs provided at the lower part of the hot water storage tank 12.

前部と後部の発泡性成形断熱材３２、３３は、それぞれ耐熱性発泡ポリスチレンを成形金型により成形加工したものであり、前記貯湯タンク１２の前部と後部の外郭に概ね沿わせた形状の窪み部３２Ａ、３３Ａをそれぞれ有し、その窪み部３２Ａ、３３Ａに貯湯タンク１２の前部と後部を嵌合させて、貯湯タンク１２に取り付けるものである。 Each of the front and rear foamable heat insulating materials 32 and 33 is formed by molding heat-resistant foamed polystyrene with a molding die, and has a shape generally along the front and rear outlines of the hot water storage tank 12. Recess portions 32A and 33A are provided, and the front and rear portions of the hot water storage tank 12 are fitted to the recess portions 32A and 33A, respectively, and attached to the hot water storage tank 12.

また、前部発泡性成形断熱材３２には、貯湯タンク１２の頂部に接続された給湯用配管１６や追い焚き用配管１８などの配管を導出させる導出用開口部３２Ｂが形成され、この導出用開口部３２Ｂには配管を導出させた状態で、その導出用開口部３２Ｂを塞ぐ隙間パット３５を嵌合装着する。 The front foamable heat insulating material 32 is formed with a lead-out opening 32B that leads out pipes such as the hot water supply pipe 16 and the reheating pipe 18 connected to the top of the hot water storage tank 12. In the state where the pipe is led out to the opening 32B, a gap pad 35 for closing the lead-out opening 32B is fitted and mounted.

さらにまた、前部と後部の発泡性成形断熱材３２、３３の双方は、窪み部３２Ａ、３３Ａの表面、即ち、前記貯湯タンク１２側となる発泡性成形断熱材３２、３３のそれぞれの内表面には、貯湯タンク１２からの放射熱を貯湯タンク１２側へ反射させる反射膜３６、３７が形成され、かつ、この反射膜３６、３７と前記貯湯タンク１２の外表面との間には、発泡性成形断熱材３２、３３側に形成した一部の突部（図示せず）を除いて、空気層を形成するための間隙Ｘを設けている。この空気層を形成するための間隙Ｘは、その寸法を約５〜１０ｍｍに設定しており、空気断熱効果が加味される。 Furthermore, both of the front and rear foamable heat insulating materials 32 and 33 are the surfaces of the recesses 32A and 33A, that is, the inner surfaces of the foamable heat insulating materials 32 and 33 on the hot water storage tank 12 side. Are formed with reflection films 36 and 37 for reflecting the radiant heat from the hot water storage tank 12 toward the hot water storage tank 12, and foaming is formed between the reflection films 36 and 37 and the outer surface of the hot water storage tank 12. Except for a part of the protrusions (not shown) formed on the heat-resistant molded heat insulating materials 32 and 33 side, a gap X for forming an air layer is provided. The gap X for forming the air layer has a dimension set to about 5 to 10 mm, and an air heat insulating effect is taken into consideration.

前記反射膜３６、３７は、アルミ蒸着シートを窪み部３２Ａ、３３Ａの表面、即ち、前記貯湯タンク１２側となる発泡性成形断熱材３２、３３のそれぞれの内表面全体に貼り付けて、貯湯タンク１２からの放射熱を貯湯タンク１２側へ反射させて、貯湯タンク１２の保温・断熱性を一層高めている。 The reflective films 36 and 37 are formed by attaching an aluminum vapor-deposited sheet to the surfaces of the recesses 32A and 33A, that is, the entire inner surfaces of the foamable heat insulating materials 32 and 33 on the hot water storage tank 12 side. The radiant heat from 12 is reflected to the hot water storage tank 12 side, and the heat insulation and heat insulation properties of the hot water storage tank 12 are further enhanced.

そのため、貯湯タンク１２から放射される放射熱を発泡性成形断熱材３２、３３の内表面の反射膜３６、３７により貯湯タンク１２側へ反射させるため、発泡性成形断熱材の肉厚寸法を増加させることなく、貯湯タンク１２を効果的に保温・断熱することが可能になる。 Therefore, since the radiant heat radiated from the hot water storage tank 12 is reflected to the hot water storage tank 12 side by the reflective films 36 and 37 on the inner surfaces of the foamable molded heat insulating materials 32 and 33, the thickness of the foamable heat insulating material is increased. Without this, the hot water storage tank 12 can be effectively kept warm and insulated.

また、発泡性成形断熱材３２、３３の内表面の反射膜３６、３７と前記貯湯タンク１２の外表面との間に空気層を形成するため間隙Ｘを設けたことにより、空気断熱効果が加味され、貯湯タンク１２を一層効果的に保温・断熱することが可能になる。 Further, the air insulation effect is taken into account by providing a gap X to form an air layer between the reflective films 36 and 37 on the inner surface of the foamable heat insulating materials 32 and 33 and the outer surface of the hot water storage tank 12. As a result, the hot water storage tank 12 can be more effectively insulated and insulated.

図５及び図６は、冷媒対水熱交換器４の断熱構造を説明する図である。次に、この冷媒対水熱交換器４の断熱構造について説明する。前記冷媒対水熱交換器４は、平面視で楕円状に捲回されて螺旋状に形成され、それの全体が、上下に２分割形成された上部発泡性成形断熱材３８と下部発泡性成形断熱材３９により被覆されている。そして、前記冷媒対水熱交換器４は、上部と下部の発泡性成形断熱材３８、３９により断熱それた状態で、ヒートポンプユニット１の外装ケース１Ａの底板上に設置される。 5 and 6 are diagrams illustrating the heat insulating structure of the refrigerant-to-water heat exchanger 4. Next, the heat insulation structure of the refrigerant-to-water heat exchanger 4 will be described. The refrigerant-to-water heat exchanger 4 is wound in an elliptical shape in a plan view and formed into a spiral shape, and the entirety thereof is divided into an upper foamable heat insulating material 38 and a lower foamable mold. It is covered with a heat insulating material 39. The refrigerant-to-water heat exchanger 4 is installed on the bottom plate of the outer case 1 A of the heat pump unit 1 in a state where the refrigerant-to-water heat exchanger 4 is insulated by the upper and lower foamed molded heat insulating materials 38 and 39.

前記上部と下部の発泡性成形断熱材３８、３９は、それぞれ耐熱性発泡ポリスチレンを成形金型により成形加工したものであり、前記冷媒対水熱交換器４を収容する凹部３８Ａ、３９Ａをそれぞれ有し、その凹部３８Ａ、３９Ａに前記冷媒対水熱交換器４の上部と下部を収容するようにして、冷媒対水熱交換器４を取り囲むものである。 The upper and lower foamable heat insulating materials 38 and 39 are each formed by molding heat-resistant foamed polystyrene using a molding die, and have recesses 38A and 39A for accommodating the refrigerant-to-water heat exchanger 4, respectively. The recesses 38A, 39A surround the refrigerant-to-water heat exchanger 4 so that the upper and lower parts of the refrigerant-to-water heat exchanger 4 are accommodated therein.

また、上部と下部の発泡性成形断熱材３８、３９には、冷媒対水熱交換器４の両端部を導出させる導出用開口部３８Ｂ、３９Ｂがそれぞれ形成されている。また、上部と下部の発泡性成形断熱材３８、３９の双方は、凹部３８Ａ、３９Ａの表面、即ち、前記冷媒対水熱交換器４側となる内表面に、冷媒対水熱交換器４からの放射熱を反射させる反射膜４０、４１が形成され、かつ、この反射膜４０、４１と前記冷媒対水熱交換器４との間には、発泡性成形断熱材３８、３９側に形成した一部の突部４２、４２を除いて、冷媒対水熱交換器４外周に空気層を形成するための間隙Ｙを設けている。この間隙Ｙは、その寸法を約５〜１０ｍｍに設定しており、空気断熱効果が加味される。 The upper and lower foamable heat insulating materials 38 and 39 are formed with outlet openings 38B and 39B for leading out the both ends of the refrigerant-to-water heat exchanger 4, respectively. Further, both the upper and lower expandable molded heat insulating materials 38, 39 are formed on the surfaces of the recesses 38A, 39A, that is, on the inner surface on the refrigerant-to-water heat exchanger 4 side, from the refrigerant-to-water heat exchanger 4. Reflective films 40 and 41 for reflecting the radiant heat are formed, and between the reflective films 40 and 41 and the refrigerant-to-water heat exchanger 4, the foamed molded heat insulating materials 38 and 39 are formed. A gap Y for forming an air layer is provided on the outer periphery of the refrigerant-to-water heat exchanger 4 except for some protrusions 42 and 42. The gap Y has a dimension set to about 5 to 10 mm, and an air insulation effect is taken into consideration.

前記反射膜４０、４１は、アルミ蒸着シートを凹部３８Ａ、３９Ａの表面、即ち、前記冷媒対水熱交換器４側となる発泡性成形断熱材３８、３９それぞれの内表面に貼り付けて、冷媒対水熱交換器４からの放射熱を反射させて、冷媒対水熱交換器４の断熱性を一層高めている。 The reflective films 40 and 41 are formed by attaching an aluminum vapor-deposited sheet to the surfaces of the recesses 38A and 39A, that is, the inner surfaces of the foamable heat insulating materials 38 and 39 on the refrigerant-to-water heat exchanger 4 side. Radiant heat from the water-to-water heat exchanger 4 is reflected to further enhance the heat insulation of the refrigerant-to-water heat exchanger 4.

上述の実施例によれば、給水配管１３、貯湯用配管１６、追い焚き用配管１８及び給湯用配管２３を含む複数の配管が接続され、加熱装置としてのヒートポンプサイクルＸの冷媒対水熱交換器４で加熱された湯を貯留する貯湯タンク１２を備え、この貯湯タンク１２の外郭を前後に２分割形成された前部と後部の発泡性成形断熱材３２、３３により被覆して保温・断熱する構成のヒートポンプ式の給湯装置Ａにおいて、前記貯湯タンク１２側となる発泡性成形断熱材３２、３３の内表面に、貯湯タンク１２からの熱を貯湯タンク１２側へ反射させる反射膜３６、３７を形成しているので、貯湯タンク１２から放射される放射熱を反射膜３６、３７により貯湯タンク１２側へ反射させることができ、発泡性成形断熱材の肉厚寸法を増加させたりすることなく、貯湯タンク１２を効果的に保温・断熱することができる。 According to the above-described embodiment, a plurality of pipes including the water supply pipe 13, the hot water storage pipe 16, the reheating pipe 18 and the hot water supply pipe 23 are connected, and the refrigerant-to-water heat exchanger of the heat pump cycle X as a heating device is connected. The hot water storage tank 12 for storing the hot water heated at 4 is provided, and the outer shell of the hot water storage tank 12 is covered with foamable heat insulating materials 32 and 33 formed in front and rear portions that are divided into two parts in the front and rear directions to insulate and insulate. In the heat pump type hot water supply apparatus A having the configuration, the reflection films 36 and 37 for reflecting the heat from the hot water storage tank 12 to the hot water storage tank 12 side are provided on the inner surfaces of the foamable heat insulating materials 32 and 33 on the hot water storage tank 12 side. Since it is formed, the radiant heat radiated from the hot water storage tank 12 can be reflected to the hot water storage tank 12 side by the reflective films 36 and 37, and the thickness of the foamed molded heat insulating material can be increased. Rukoto no, it is possible to temperature-maintaining heat insulation of the hot water storage tank 12 effectively.

また、前記発泡性成形断熱材３２、３３の反射膜３６、３７と貯湯タンク１２の外表面との間に空気層を形成するための間隙Ｘを設けた構成であるから、空気層による空気断熱効果が加味され、貯湯タンク１２を一層効果的に保温・断熱することができる。 In addition, since the gap X for forming an air layer is provided between the reflective films 36 and 37 of the foamable molded heat insulating materials 32 and 33 and the outer surface of the hot water storage tank 12, air insulation by the air layer is provided. An effect is added and the hot water storage tank 12 can be heat-insulated and insulated more effectively.

また、貯湯タンク１２は、前後に２分割形成された前部発泡性成形断熱材３２と後部発泡性成形断熱材３３により被覆されているが、上下に２分割形成された上部発泡性成形断熱材と下部発泡性成形断熱材とで被覆される構成でも良い。さらに、上下部及び前後部の４分割形成された発泡性成形断熱材で貯湯タンク１２の外郭を被覆する構成でも良い。 Further, the hot water storage tank 12 is covered with a front foamable molded heat insulating material 32 and a rear foamable heat insulating material 33 which are divided into two parts in the front and rear directions, but an upper foamable molded heat insulating material formed into two parts in the vertical direction. And a lower foamable molded heat insulating material. Furthermore, the structure which coat | covers the outer shell of the hot water storage tank 12 with the foaming shaping | molding heat insulating material formed in the upper and lower parts and the front-and-back part 4 may be sufficient.

以上本発明の実施態様について説明したが、上述の説明に基づいて当業者にとって種々の代替例、修正又は変形が可能であり、本発明の主旨を逸脱しない範囲で前述の種々の代替例、修正又は変形を包含するものである。 Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the various alternatives and modifications described above without departing from the spirit of the present invention. Or a modification is included.

本発明の一実施例を示す給湯装置の設置状態を説明する説明図である。It is explanatory drawing explaining the installation state of the hot water supply apparatus which shows one Example of this invention. 同じく全体構成の概略構成図である。It is a schematic block diagram of the whole structure similarly. 同じく断熱構造を施した状態の貯湯タンクの斜視図である。It is a perspective view of the hot water storage tank of the state which gave the heat insulation structure similarly. 同じく断熱構造を施した状態の貯湯タンクの縦断面図である。It is the longitudinal cross-sectional view of the hot water storage tank of the state which gave the heat insulation structure similarly. 断熱構造を施した状態の冷媒対水熱交換器の斜視図である。It is a perspective view of the refrigerant | coolant versus water heat exchanger of the state which gave the heat insulation structure. 断熱構造を施した状態の冷媒対水熱交換器の縦断面図である。It is a longitudinal cross-sectional view of the refrigerant | coolant versus water heat exchanger of the state which gave the heat insulation structure.

符号の説明Explanation of symbols

Ａ給湯装置
Ｘヒートポンプサイクル
１ヒートポンプユニット
２貯湯タンクユニット
３圧縮機
４冷媒対水熱交換器（加熱装置）
１２貯湯タンク
１３給水配管（配管）
１６貯湯用配管（配管）
１８追い焚き用配管（配管）
２３給湯用配管（配管）
３２前部発泡性成形断熱材（発泡性成形断熱材）
３３後部発泡性成形断熱材（発泡性成形断熱材）
３６反射膜
３７反射膜
Ｘ間隔 A Hot water supply device X Heat pump cycle 1 Heat pump unit 2 Hot water storage tank unit 3 Compressor 4 Refrigerant to water heat exchanger (heating device)
12 Hot water storage tank 13 Water supply piping (piping)
16 Hot water storage piping (piping)
18 Piping pipe (piping)
23 Hot water supply piping (piping)
32 Front foaming insulation (foaming insulation)
33 Rear foaming insulation (foaming insulation)
36 Reflective film 37 Reflective film X Interval

Claims

複数の配管が接続され、加熱装置で加熱された湯を貯留する貯湯タンクを備え、この貯湯タンクの外郭を発泡性成形断熱材により被覆して保温・断熱する構成の給湯装置において、この発泡性成形断熱材は上下もしくは左右に分割形成された2つの発泡性成形断熱材か
ら構成され、これら2つの発泡性成形断熱材は貯湯タンクの外郭に概ね沿わせ且つこのタ
ンクに接続された前記配管を囲む形状の窪み部を夫々備えており、この窪み部においては、前記貯湯タンク側となる内表面に、貯湯タンクからの熱を貯湯タンク側へ反射させるアルミ蒸着シートの反射膜が形成され、この反射膜と前記貯湯タンク並びにこのタンクにつながれた配管の外表面との間に空気層が形成される間隙が設けられるように、2つの発泡
性成形断熱材の窪み部を嵌合させたことを特徴とする給湯装置。 In a hot water supply apparatus having a structure in which a plurality of pipes are connected and a hot water storage tank for storing hot water heated by a heating device is provided, and the outer shell of the hot water storage tank is covered with a foaming molded heat insulating material for heat insulation and insulation . Is the molding insulation two foamable insulations divided into top and bottom or left and right?
These two foamed molded insulations are generally along the outer wall of the hot water storage tank and
Each of which has a hollow portion surrounding the pipe connected to the tank, and in this hollow portion, an aluminum vapor deposition sheet that reflects heat from the hot water storage tank to the hot water storage tank side on the inner surface on the hot water storage tank side Two foams are formed so that an air layer is formed between the reflective film and the hot water storage tank and the outer surface of the pipe connected to the tank.
A hot water supply apparatus, wherein a hollow portion of a heat-resistant molded heat insulating material is fitted .