JP6500207B2 - Hot water storage tank unit and water heater provided with the same - Google Patents
Hot water storage tank unit and water heater provided with the same Download PDFInfo
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- JP6500207B2 JP6500207B2 JP2014135621A JP2014135621A JP6500207B2 JP 6500207 B2 JP6500207 B2 JP 6500207B2 JP 2014135621 A JP2014135621 A JP 2014135621A JP 2014135621 A JP2014135621 A JP 2014135621A JP 6500207 B2 JP6500207 B2 JP 6500207B2
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Description
本発明は、湯水を貯留する貯湯タンクユニットおよびそれを備えた給湯装置に関するものである。 The present invention relates to a hot water storage tank unit for storing hot and cold water and a hot water supply apparatus including the same.
従来、給湯装置として、電気料金が安価な深夜電力を利用して、ヒートポンプ装置により湯水を加熱生成する給湯装置がある。この給湯装置は、加熱生成された湯水を貯湯タンクに貯留する。（例えば、特許文献１参照）。 Conventionally, as a hot water supply apparatus, there is a hot water supply apparatus that heats and generates hot and cold water by a heat pump device using late-night electric power at low cost. The hot water supply device stores the heated and generated hot and cold water in a hot water storage tank. (See, for example, Patent Document 1).
貯湯タンク内の湯水が実際に使用されるのは、主に夕方から夜にかけてである。特に、浴室が使用される時間帯である。よって、深夜時間帯に加熱生成した湯水を高温のまま保温しておくことが必要である。保温性能を向上させることが、給湯装置の省エネルギー性の向上に重要である。 The hot and cold water in the hot water storage tank is actually used mainly in the evening and at night. In particular, it is the time of day when the bathroom is used. Therefore, it is necessary to keep warm the hot and cold water heated and generated in the late-night time zone. It is important to improve the energy saving performance of the hot water supply device to improve the heat retention performance.
貯湯タンクの保温性能を高める方法として、従来の発泡スチロール等の断熱材に加え、発泡スチロールよりも熱伝導率の低い真空断熱材を用いた給湯装置がある（例えば、特許文献２参照）。 As a method of enhancing the heat retention performance of the hot water storage tank, there is a water heater using a vacuum heat insulating material having a thermal conductivity lower than that of the expanded polystyrene, in addition to the conventional heat insulating material such as expanded polystyrene (see, for example, Patent Document 2).
図１２は、特許文献２に記載された給湯装置の内部構造を示す側面図である。図１２に示すように、貯湯タンクユニット１０１は、上部および下部が半円球状で、胴部が円筒状の貯湯タンク１０２と、貯湯タンク１０２の上面を覆う上部断熱材１０３と、貯湯タンク１０２の側面を覆い、少なくとも一部が真空断熱材で構成される側部断熱材１０４と、貯湯タンク１０２を収納する筐体１０５を備えている。 FIG. 12 is a side view showing the internal structure of the hot water supply device described in Patent Document 2. As shown in FIG. As shown in FIG. 12, the hot water storage tank unit 101 has a hot water storage tank 102 whose upper and lower portions are semispherical and whose body is cylindrical, an upper heat insulator 103 covering the upper surface of the hot water storage tank 102, and the hot water storage tank 102. A side heat insulating material 104 which covers the side surface and at least a part of which is formed of a vacuum heat insulating material, and a housing 105 for storing the hot water storage tank 102 are provided.
上部断熱材１０３と側部断熱材１０４とは、シール用断熱材１０６により接合されている。また、上部断熱材１０３の一部が、側部断熱材１０４およびシール用断熱材１０６よりも、外方に位置している。 The upper heat insulator 103 and the side heat insulator 104 are joined by a sealing heat insulator 106. In addition, a part of the upper heat insulating material 103 is positioned more outward than the side heat insulating material 104 and the heat insulating material for sealing 106.
前記従来の構成では、真空断熱材をシール用断熱材によって固定している。しかしながら、貯湯タンクに高温の湯水が貯留されるにしたがって、シール用断熱材の接着部周囲の温度が上昇する。また、貯湯タンクユニットは屋外に配置されることが多く、外気温度が高い場合や貯湯タンクユニットに直射日光が当たった場合にも、貯湯タンクユニットの内部の温度が上昇して（例えば、５０度以上）、シール用断熱材の周囲の温度が上昇する。 In the said conventional structure, the vacuum heat insulating material is being fixed with the heat insulating material for seals. However, as hot water is stored in the hot water storage tank, the temperature around the bonding portion of the heat insulating material for sealing rises. In addition, the hot water storage tank unit is often arranged outdoors, and the temperature inside the hot water storage tank unit rises (for example, 50 degrees even when the outside air temperature is high or when the hot water storage tank unit is exposed to direct sunlight) Above, the temperature around the heat insulating material for sealing rises.
これにより、シール用断熱材の接着力が次第に失われ、シール用断熱材がはがれる場合がある。これにより、熱気の漏れ（放熱ロス）が生じ、その結果、貯湯タンクの保温性能が悪化するという課題を有していた。 As a result, the adhesion of the sealing heat insulating material may be gradually lost, and the sealing heat insulating material may be peeled off. As a result, leakage of hot air (heat radiation loss) occurs, and as a result, it has a problem that the heat retaining performance of the hot water storage tank is deteriorated.
本発明は、前記従来の課題を解決するためのもので、貯湯タンクからの放熱ロスを抑制して、省エネルギー性に優れた貯湯タンクユニットおよびそれを備えた給湯装置を提供することを目的とする。 The present invention is intended to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a hot water storage tank unit excellent in energy saving performance by suppressing the heat radiation loss from the hot water storage tank and a hot water supply apparatus including the same. .
前記従来の課題を解決するために、本発明は、湯水を貯留する貯湯タンクと、前記貯湯タンクの外方の少なくとも一部を覆う第１断熱材と、前記貯湯タンクの外方の少なくとも一部を覆い、前記第１断熱材よりも熱伝導率の大きい発泡スチロールまたは発泡ウレタンである第２断熱材と、前記貯湯タンク、前記第１断熱材、前記第２断熱材を内部に収容する筐体と、を備え、前記第１断熱材と前記第２断熱材とを接合するシール部材を設け、前記シール部材は、一方の面で、前記第１断熱材を前記第２断熱材に固定させるとともに、他方の面は、前記筐体の内表面と当接している構成としたことを特徴とする貯湯タンクユニットである。これにより、シール部材のはがれを抑制する。 In order to solve the above-mentioned conventional problems, according to the present invention, a hot water storage tank for storing hot water, a first heat insulating material covering at least a part of the outer side of the hot water storage tank, and at least a part of the outer side And a second heat insulating material which is expanded polystyrene or urethane foam having a thermal conductivity larger than that of the first heat insulating material, and a case for housing the hot water storage tank, the first heat insulating material, and the second heat insulating material therein; A sealing member for joining the first heat insulating material and the second heat insulating material, and the sealing member fixes the first heat insulating material to the second heat insulating material on one side. the other surface is a hot water storage tank unit, characterized in that it has a structure that is in contact with the inner surface of the housing. Thereby, the peeling of the seal member is suppressed.
本発明によれば、貯湯タンクからの放熱ロスを抑制して省エネルギー性に優れた貯湯タンクユニットを提供できる。 According to the present invention, it is possible to provide a hot water storage tank unit excellent in energy saving performance by suppressing the heat radiation loss from the hot water storage tank.
第１の発明は、湯水を貯留する貯湯タンクと、前記貯湯タンクの外方の少なくとも一部を覆う第１断熱材と、前記貯湯タンクの外方の少なくとも一部を覆い、前記第１断熱材よりも熱伝導率の大きい発泡スチロールまたは発泡ウレタンである第２断熱材と、前記貯湯タンク、前記第１断熱材、前記第２断熱材を内部に収容する筐体と、を備え、前記第１断熱材と前記第２断熱材とを接合するシール部材を設け、前記シール部材は、一方の面で、前記第１断熱材を前記第２断熱材に固定させるとともに、他方の面は、前記筐体の内表面と当接している構成としたことを特徴とする貯湯タンクユニットである。 A first invention covers a hot water storage tank for storing hot and cold water, a first heat insulating material covering at least a part of an outer side of the hot water storage tank, and covers at least a part of an outer side of the hot water storage tank A second heat insulating material having expanded thermal conductivity larger than that of foamed polystyrene or urethane foam, and a case for containing the hot water storage tank, the first heat insulating material, and the second heat insulating material therein, the first heat insulation A sealing member for joining the second heat insulating material and the second heat insulating material , the first surface of the sealing member fixing the first heat insulating material to the second heat insulating material, and the other surface being the housing a hot water storage tank unit, characterized in that it has a structure that is in contact with the inner surface of.
これにより、シール部材が一方の面で第１断熱材と第２断熱材とを接着し、他方の面は筐体の内表面と当接する。すなわち、シール部材が、断熱材と筐体とで挟まれる。これにより、シール部材のはがれを防止する。その結果、シール部材のはがれ、および、断熱材のずれを防止して貯湯タンクからの放熱ロスを抑制する。 Thus, the seal member bonds the first heat insulator and the second heat insulator on one side, and the other side abuts on the inner surface of the housing. That is, the seal member is sandwiched between the heat insulator and the housing. This prevents peeling of the sealing member. As a result, peeling of the seal member and displacement of the heat insulating material are prevented to suppress the heat radiation loss from the hot water storage tank.
ここで、第１断熱材として、真空断熱材を用いることが好ましい。また、第２断熱材として、発泡スチロールや発泡ウレタンを用いることができる。 Here, it is preferable to use a vacuum heat insulating material as the first heat insulating material. In addition, as the second heat insulating material, expanded polystyrene or expanded urethane can be used.
第２の発明は、特に第１の発明において、前記第１断熱材は、前記筐体との間に間隙を設けて配設され、前記シール部材は、伸縮性を有し、前記シール部材の無負荷状態における厚みは、前記間隙と同一または前記間隙よりも大きいことを特徴とするものである。 According to a second invention, in particular, in the first invention, the first heat insulating material is disposed with a gap provided between the first heat insulating material and the casing, the seal member has elasticity, and The thickness in the unloaded state is characterized by being equal to or larger than the gap.
これにより、シール部材が、断熱材と筐体によって強固に挟まれて固定される。よって、シール部材のはがれ、および、断熱材の位置ずれを防止して、放熱ロスを抑制する。また、筐体は、金属性の薄板で構成されることが多い。例えば、貯湯タンクユニット内部にポンプ等の振動発生源が設けられていると、筐体が振動発生源の発する振動と共振し、騒音が発生するおそれがある。しかしながら、伸縮性を有するシール部材が筐体に当接するので、振動を吸収して、騒音の発生を抑制する。 Thereby, the seal member is firmly sandwiched and fixed by the heat insulating material and the housing. Therefore, peeling of the sealing member and positional deviation of the heat insulating material are prevented to suppress the heat radiation loss. Also, the housing is often made of a metallic thin plate. For example, if a vibration generating source such as a pump is provided inside the hot water storage tank unit, the case may resonate with the vibration generated by the vibration generating source, and noise may be generated. However, since the stretchable seal member abuts on the housing, it absorbs vibration and suppresses the generation of noise.
また、第１断熱材として真空断熱材を用いると、真空断熱材は外装に金属（例えば、アルミニウム）を用いるため、外装に覆われた内部の芯材と比較して熱伝導率が著しく大きい。ここで、金属製の外装が、同じく金属製の筐体と接触すると、熱が外装を伝って筐体へと伝達され、放熱ロスが大きくなる。一方、第１断熱材（真空断熱材）と筐体との間にシール部材が設けられているので、真空断熱材と筐体との間に間隙が形成されて、接触が防止される。その結果、放熱ロスを抑制して保温性能に優れた貯湯タンクユニットを実現できる。 In addition, when a vacuum heat insulating material is used as the first heat insulating material, the vacuum heat insulating material uses metal (for example, aluminum) for the exterior, so the thermal conductivity is significantly higher than that of the inner core material covered with the exterior. Here, when the metal outer package is in contact with the metal case, heat is transmitted to the case through the outer package, and the heat radiation loss increases. On the other hand, since the seal member is provided between the first heat insulating material (vacuum heat insulating material) and the housing, a gap is formed between the vacuum heat insulating material and the housing to prevent contact. As a result, it is possible to realize a hot water storage tank unit excellent in heat retention performance by suppressing the heat radiation loss.
なお、シール部材が設けられた箇所における第１断熱材と筐体との間の間隙と、シール部材の無負荷状態における厚みとを比較して、シール部材の厚みが間隙以上の大きさであればよい。ここで、無負荷状態とは、シール部材がまだ断熱材に貼り付けられていない状態、または、シール部材が断熱材に貼り付けられているが、筐体が取り付けられていない状態をいう。 Note that the thickness of the seal member is equal to or greater than the gap by comparing the gap between the first heat insulating material and the housing at the location where the seal member is provided with the thickness of the seal member in the unloaded state. Just do it. Here, the non-loaded state refers to a state in which the seal member is not yet attached to the heat insulating material or a state in which the seal member is attached to the heat insulator but the housing is not attached.
第３の発明は、特に、第１または第２の発明において、前記第１断熱材は、前記貯湯タンクの外方の少なくとも一部を覆った状態で、前記貯湯タンクの胴部を円弧状に覆う円弧状部と、前記筐体の内表面と平行な平面部と、を有し、前記シール部材が、前記平面部に設けられていることを特徴とするものである。 The third invention is, in particular, according to the first or second invention, wherein the first heat insulating material makes the body of the hot water storage tank arc-shaped while covering at least a part of the outer side of the hot water storage tank. It is characterized in that it has an arc-shaped portion to be covered and a flat portion parallel to the inner surface of the housing, and the seal member is provided on the flat portion.
これにより、第１断熱材が貯湯タンクの胴部の周囲に沿って円弧状に配置されるので、貯湯タンクからの放熱ロスを抑制する。 Thereby, since the first heat insulating material is arranged in an arc along the periphery of the body of the hot water storage tank, the heat radiation loss from the hot water storage tank is suppressed.
また、第１断熱材として真空断熱材を用いた場合、真空断熱材を貯湯タンクの周囲に円弧状に配置するために、平板状の真空断熱材を、ロール加工して円弧状にする。円弧状に加工された真空断熱材を貯湯タンクの周囲に配設すると、真空断熱材が元の形状（平板状）に戻ろうとする。すなわち、真空断熱材と筐体とが接触しやすい。 Moreover, when using a vacuum heat insulating material as a 1st heat insulating material, in order to arrange a vacuum heat insulating material like a circular arc around a hot water storage tank, a flat vacuum heat insulating material is roll processed into an arc. When the vacuum heat insulating material processed into an arc shape is disposed around the hot water storage tank, the vacuum heat insulating material tries to return to the original shape (flat shape). That is, the vacuum heat insulating material and the housing are easily in contact with each other.
ここで、第１断熱材（真空断熱材）を、筐体の内表面と平行な平面部を設けて貯湯タンクの周囲に配置し、平面部シール部材を設ける。これにより、平面部を、シール部材を介して筐体によって押さえる。その結果、第１断熱材を強固に固定し、第１断熱材と筐体との間に間隙を設けることができる。 Here, the first heat insulating material (vacuum heat insulating material) is disposed on the periphery of the hot water storage tank by providing a flat portion parallel to the inner surface of the housing, and a flat portion sealing member is provided. Thus, the flat portion is pressed by the housing via the seal member. As a result, the first heat insulator can be firmly fixed, and a gap can be provided between the first heat insulator and the housing.
第４の発明は、特に、第１から３のいずれかの発明において、前記シール部材は、無負荷状態において、前記第２断熱材よりも外方に突出することを特徴とするものである。 According to a fourth invention, in particular, in any one of the first to third inventions, the seal member protrudes outward more than the second heat insulating material in a no-load state.
これにより、第１断熱材を筐体によってより強固に押さえつける。よって、第１断熱材のはがれを防止して放熱ロスを抑制する。その結果、保温性能に優れた貯湯タンクユニットを実現する。 Thereby, the first heat insulating material is more firmly held down by the housing. Therefore, the peeling of the first heat insulating material is prevented to suppress the heat radiation loss. As a result, a hot water storage tank unit excellent in heat retention performance is realized.
第５の発明は、特に第３の発明において、前記第２断熱材に、前記第１断熱材の前記平面部が当接する凹み部を設け、前記シール部材が、前記平面部と前記凹み部の周囲とを接合するように設けられていることを特徴とするものである。 According to a fifth invention, in particular, in the third invention, a recess in which the flat portion of the first heat insulating material abuts is provided in the second heat insulating material, and the seal member includes the flat portion and the recess. It is characterized in that it is provided so as to bond with the surroundings.
ここで、第１断熱材の平面部を第２断熱材の凹み部に当接させたとき、シール部材が貼り付けられる第１断熱材と第２断熱材との面が、同一平面上に位置することが好ましい。これにより、第１断熱材と第２断熱材とを、強固に接合する。よって、シール部材のはがれを防止して放熱ロスを抑制する。 Here, when the flat portion of the first heat insulating material is brought into contact with the recessed portion of the second heat insulating material, the surfaces of the first heat insulating material and the second heat insulating material to which the sealing member is attached are located on the same plane. It is preferable to do. Thereby, the first heat insulating material and the second heat insulating material are firmly joined. Therefore, peeling of the sealing member is prevented to suppress the heat radiation loss.
第６の発明は、特に第１から５のいずれかの発明において、前記貯湯タンクから湯を出湯させる出湯配管と、前記貯湯タンクに水を供給する給水管と、前記給水管の途中に設けられた減圧弁と、を備え、前記減圧弁の設定圧力を０．１８ＭＰＡ以上としたことを特徴とするものである。 According to a sixth invention, in particular, according to any one of the first to fifth inventions, a hot water discharge pipe for letting hot water from the hot water storage tank, a water supply pipe for supplying water to the hot water storage tank, and a middle part of the water supply pipe A pressure reducing valve, and a setting pressure of the pressure reducing valve is 0.18 MPA or more.
これにより、給湯端末に供給される湯水の水圧を所定圧力以上に維持する。よって、例えば、シャワーから供給される湯水の圧力（シャワー圧）を所定圧力以上として、使用者の快適性を向上させる。 Thereby, the water pressure of the hot and cold water supplied to the hot water supply terminal is maintained at a predetermined pressure or more. Therefore, for example, the pressure (shower pressure) of the hot and cold water supplied from the shower is set to a predetermined pressure or more to improve the comfort of the user.
第７の発明は、特に第１から６のいずれかの発明の貯湯タンクユニットと、湯水を加熱する加熱手段とを備えた給湯装置である。これにより、省エネルギー性に優れた給湯装置を実現できる。 A seventh invention is, in particular, a hot water supply apparatus including the hot water storage tank unit of any of the first to sixth inventions, and a heating means for heating hot and cold water. Thereby, a hot water supply device excellent in energy saving can be realized.
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. The present invention is not limited by the embodiment.
（実施の形態１）
図１は、本実施の形態における給湯装置の概略構成図である。図２は、給湯装置を構成する貯湯タンクユニットとヒートポンプユニットとの内部構造を示す正面図である。給湯装置１００は、湯水を貯留する貯湯タンク４を備えた貯湯タンクユニット１と、湯水を加熱する加熱手段としてのヒートポンプ回路１３を有するヒートポンプユニット２とを備える。貯湯タンクユニット１とヒートポンプユニット２とは、加熱回路３を構成する水配管（３Ａ、３Ｂ）により互いに接続される。
Embodiment 1
FIG. 1 is a schematic configuration diagram of a hot water supply apparatus in the present embodiment. FIG. 2: is a front view which shows the internal structure of the hot water storage tank unit which comprises a hot-water supply apparatus, and a heat pump unit. The hot water supply apparatus 100 includes a hot water storage tank unit 1 including a hot water storage tank 4 for storing hot and cold water, and a heat pump unit 2 having a heat pump circuit 13 as heating means for heating the hot and cold water. The hot water storage tank unit 1 and the heat pump unit 2 are connected to each other by water pipes (3A, 3B) constituting the heating circuit 3.
貯湯タンクユニット１の内部には、貯湯タンク４が配設される。貯湯タンク４は、ヒートポンプユニット２で加熱生成された湯水を貯留する。貯湯タンク４に貯留された湯水は、後述する混合弁（９、５１）により、市水から供給される水と混合されて、所定温度の湯水となる。所定温度に混合された湯水は、カランやシャワー等の給湯端末１１、浴槽７０等に供給される。 A hot water storage tank 4 is disposed inside the hot water storage tank unit 1. The hot water storage tank 4 stores hot and cold water heated and generated by the heat pump unit 2. The hot water stored in the hot water storage tank 4 is mixed with the water supplied from the city water by a mixing valve (9, 51) described later to become hot water of a predetermined temperature. Hot and cold water mixed to a predetermined temperature is supplied to a hot water supply terminal 11 such as a pot or a shower, a bath 70 and the like.
貯湯タンク４は、耐食性に優れたステンレス製の薄板で構成される。貯湯タンク４は、上部と下部とが半円球状に形成され、中央部が円筒状に形成される。詳細は後述する。また、貯湯タンク４の周囲には、断熱材（５、２５、２６）が設けられる。これにより、貯湯タンク４の保温性能を向上させる。 The hot water storage tank 4 is formed of a thin plate made of stainless steel excellent in corrosion resistance. The hot water storage tank 4 has an upper portion and a lower portion formed in a semi-spherical shape, and a central portion formed in a cylindrical shape. Details will be described later. Moreover, around the hot water storage tank 4, a heat insulating material (5, 25, 26) is provided. Thereby, the heat retention performance of the hot water storage tank 4 is improved.
貯湯タンクユニット１の内部には、貯湯タンク４に水道水を供給する給水経路（給水管）６が設けられる。給水管６は、貯湯タンク４の下部に接続される。また、給水管６の途中には、水道管内の圧力を一定圧まで減圧する減圧弁７が設けられる。また、貯湯タンクユニット１の内部には、給水管６の途中から分岐して、後述の混合弁（９、５１）に接続される給水分岐管（６Ａ、６Ｂ）が設けられる。 Inside the hot water storage tank unit 1, a water supply path (a water supply pipe) 6 for supplying tap water to the hot water storage tank 4 is provided. The water supply pipe 6 is connected to the lower part of the hot water storage tank 4. Further, in the middle of the water supply pipe 6, a pressure reducing valve 7 for reducing the pressure in the water pipe to a constant pressure is provided. Further, inside the hot water storage tank unit 1, there are provided water supply branch pipes (6A, 6B) branched from the middle of the water supply pipe 6 and connected to mixing valves (9, 51) described later.
減圧弁７は、水道管内の圧力を、所定圧力以下まで減圧する。これにより、貯湯タンク４にかかる内圧を調整して、貯湯タンク４の変形を防止する。ここで、本発明においては、減圧弁７の設定圧力を１８０ＫＰＡ以上としている。これは、一般的な設定圧力（例えば、１２０ＫＰＡ）よりも高い。 The pressure reducing valve 7 reduces the pressure in the water pipe to a predetermined pressure or less. Thereby, the internal pressure applied to the hot water storage tank 4 is adjusted, and the deformation of the hot water storage tank 4 is prevented. Here, in the present invention, the set pressure of the pressure reducing valve 7 is 180 KPA or more. This is higher than the typical set pressure (e.g. 120 KPA).
これにより、給湯端末１１等から供給される湯水の圧力を高く維持する。よって、使用者の快適性が向上する。また、給湯端末１１や浴槽７０等が貯湯タンク４の設置箇所よりも高い位置（例えば、建物の３階以上の高さ）にある場合にも、減圧弁７の設定圧力を高くすることが好ましい。これにより、給湯端末１１等から供給される湯水の圧力を高く維持する。なお、減圧弁７の設定圧力は、２５０ＫＰＡ以上であることが好ましく、２７０ＫＰＡであることがさらに好ましい。また、減圧弁７にはストレーナが組み込まれ、水道水内の汚れ、ゴミを除去する。 Thereby, the pressure of the hot and cold water supplied from the hot water supply terminal 11 etc. is maintained high. Thus, the comfort of the user is improved. In addition, it is preferable to increase the set pressure of the pressure reducing valve 7 even when the hot water supply terminal 11 or the bathtub 70 is at a position higher than the installation location of the hot water storage tank 4 (for example, the height above the third floor of a building) . Thereby, the pressure of the hot and cold water supplied from the hot water supply terminal 11 etc. is maintained high. The set pressure of the pressure reducing valve 7 is preferably 250 KPA or more, and more preferably 270 KPA. Further, a strainer is incorporated in the pressure reducing valve 7 to remove dirt and dust in tap water.
貯湯タンク４とヒートポンプユニット２（水冷媒熱交換器１５）とは、水配管（３Ａ、３Ｂ、３Ｃ、３Ｄ）によって環状に接続される。貯湯タンク４とヒートポンプユニット２（水冷媒熱交換器１５）とが環状に接続されて、湯水を加熱する加熱回路３が形成される。加熱回路３の途中には、加熱回路３に湯水を循環させる加熱循環ポンプ８が設けられる。加熱循環ポンプ８は、水配管（入水配管）３Ａの途中に設けられる。水配管３Ａは、貯湯タンク４の下部から水冷媒熱交換器１５へと湯水が流れる配管である。また、加熱循環ポンプ８は、貯湯タンクユニット１の内部に設けられる。水冷媒熱交換器１５から貯湯タンク４へと湯水が流れる水配管（３Ｂ、３Ｃ、３Ｄ）の途中には流路切替弁３Ｅが設けられる。流路切替弁３Ｅは、水冷媒熱交換器１５から流出した湯水を、貯湯タンク４の上部側（水配管３Ｃ）へ戻すか、貯湯タンク４の下部側（水配管３Ｄ）へ戻すかを切り替える。 The hot water storage tank 4 and the heat pump unit 2 (water refrigerant heat exchanger 15) are annularly connected by water pipes (3A, 3B, 3C, 3D). The hot water storage tank 4 and the heat pump unit 2 (water refrigerant heat exchanger 15) are annularly connected to form a heating circuit 3 for heating hot and cold water. In the middle of the heating circuit 3, a heating circulation pump 8 for circulating hot and cold water to the heating circuit 3 is provided. The heating circulation pump 8 is provided in the middle of the water piping (inflow piping) 3A. The water pipe 3A is a pipe through which hot and cold water flows from the lower portion of the hot water storage tank 4 to the water refrigerant heat exchanger 15. Further, the heating circulation pump 8 is provided inside the hot water storage tank unit 1. A flow path switching valve 3E is provided in the middle of the water piping (3B, 3C, 3D) through which the hot and cold water flows from the water refrigerant heat exchanger 15 to the hot water storage tank 4. The flow path switching valve 3E switches whether the hot water flowing out of the water refrigerant heat exchanger 15 is returned to the upper side (water piping 3C) of the hot water storage tank 4 or returned to the lower side (water piping 3D) of the hot water storage tank 4 .
貯湯タンク４の上部には、出湯管９Ａが接続される。出湯管９Ａの他端は、貯湯タンクユニット１の内部に配設された、給湯混合弁９の入口側に接続される。また、給湯混合弁９の入口側には、給水分岐管６Ａの他端が接続される。給湯混合弁９は、貯湯タンク４に貯留された湯水と、水道水とを混合して、混合水を給湯端末１１に供給する。給湯混合弁９で混合された湯水は、その後、給湯管１０Ａを流れ、給湯端末１１から給湯される。このように、貯湯タンク４の上部から給湯端末１１へと湯水が流れる給湯経路１０が形成される。 The hot water discharge pipe 9A is connected to the upper part of the hot water storage tank 4. The other end of the hot water discharge pipe 9A is connected to the inlet side of the hot water supply mixing valve 9 disposed inside the hot water storage tank unit 1. Further, the other end of the water supply branch pipe 6A is connected to the inlet side of the hot water supply mixing valve 9. The hot water supply mixing valve 9 mixes the hot and cold water stored in the hot water storage tank 4 with the tap water, and supplies the mixed water to the hot water supply terminal 11. Thereafter, the hot and cold water mixed by the hot water supply mixing valve 9 flows through the hot water supply pipe 10A and is supplied from the hot water supply terminal 11. Thus, the hot water supply path 10 in which hot and cold water flows from the upper part of the hot water storage tank 4 to the hot water supply terminal 11 is formed.
また、貯湯タンクユニット１の内部には、貯湯タンク４に貯留された湯水と、水道水とを混合して、この混合水を浴槽へと供給する風呂混合弁５１が設けられている。風呂混合弁５１の入口側には、貯湯タンク４からの湯水と、給水分岐管６Ｂからの水とが流入する。混合水は、風呂循環回路５０を介して、浴槽７０に注湯される。 Further, inside the hot water storage tank unit 1, a bath mixing valve 51 for mixing the hot and cold water stored in the hot water storage tank 4 with the tap water and supplying the mixed water to the bath is provided. The hot water from the hot water storage tank 4 and the water from the water supply branch pipe 6B flow into the inlet side of the bath mixing valve 51. The mixed water is poured into the bath 70 through the bath circulation circuit 50.
風呂循環回路５０は、浴槽７０の湯水を循環させ、浴槽７０の湯水を加熱する追焚回路として機能する。風呂循環回路５０の途中には、浴槽７０の湯水を循環させるための風呂循環ポンプ５２が設けられる。また、風呂循環回路５０の途中には、貯湯タンク４内の湯水で浴槽７０の湯水を加熱する追焚熱交換器６０が設けられる。 The bath circulation circuit 50 functions as a follow-up circuit that circulates the hot water of the bath 70 and heats the hot water of the bath 70. In the middle of the bath circulation circuit 50, a bath circulation pump 52 for circulating the hot and cold water of the bath 70 is provided. Further, in the middle of the bath circulation circuit 50, a supplementary heat exchanger 60 for heating the hot water of the bath 70 with the hot water in the hot water storage tank 4 is provided.
追焚熱交換器６０には、貯湯タンク４の上部から湯水が流入する。これにより、追焚熱交換器６０にて、浴槽７０の湯水を加熱する。追焚熱交換器６０から流出した湯水は、再度、貯湯タンク４に戻る。本実施の形態では、貯湯タンク４の下部に戻る。これにより、貯湯タンク４の上部の湯水が、追焚熱交換器６０を介して、相対的に下方側の貯湯タンク４へ戻る追焚回路４０が形成される。追焚回路４０の途中には、追焚循環ポンプ５３が設けられる。 Hot and cold water flows into the additional heat exchanger 60 from the top of the hot water storage tank 4. Thereby, the hot and cold water of the bath 70 is heated by the supplementary heat exchanger 60. The hot and cold water flowing out of the supplementary heat exchanger 60 returns to the hot water storage tank 4 again. In the present embodiment, it returns to the lower part of the hot water storage tank 4. As a result, a follow-up circuit 40 is formed in which the hot water in the upper part of the hot water storage tank 4 is returned to the relatively lower side hot water storage tank 4 via the additional heat exchanger 60. In the middle of the chase circuit 40, a chase circulation pump 53 is provided.
また、貯湯タンクユニット１の内部には、貯湯タンク４の圧力を逃がす圧力逃し弁１２が設けられる。圧力逃し弁１２は、密閉型の圧力容器である貯湯タンク４の内部で過大圧力が生じた場合に、その圧力を逃がす。圧力逃し弁１２は、貯湯タンク４の上部に接続される。圧力逃し弁１２の設定圧力は、減圧弁７の設定圧力よりも４０〜５０ＫＰＡ程度高く設定される。例えば、減圧弁７の設定圧力が１８０ＫＰＡであれば、減圧弁７の設定圧力の個体差も考慮して、２２０ＫＰＡ程度に設定する。また、減圧弁７の設定圧力が２７０ＫＰＡであれば、３２０ＫＰＡ程度に設定する。 Further, inside the hot water storage tank unit 1, a pressure relief valve 12 for releasing the pressure of the hot water storage tank 4 is provided. The pressure relief valve 12 relieves the pressure when an overpressure occurs inside the hot water storage tank 4 which is a closed pressure vessel. The pressure relief valve 12 is connected to the top of the hot water storage tank 4. The set pressure of the pressure relief valve 12 is set to be approximately 40 to 50 KPA higher than the set pressure of the pressure reducing valve 7. For example, when the set pressure of the pressure reducing valve 7 is 180 KPA, the individual pressure of the set pressure of the pressure reducing valve 7 is also taken into consideration, and the pressure is set to about 220 KPA. When the set pressure of the pressure reducing valve 7 is 270 KPA, the pressure is set to about 320 KPA.
給湯装置１００は、加熱手段２としてヒートポンプ装置を用いる。ヒートポンプ装置は、貯湯タンクユニット１とは別にヒートポンプユニットとして構成される。
ヒートポンプユニット（加熱手段）２には、冷媒が循環するヒートポンプ回路１３が収納される。ヒートポンプ回路１３は、圧縮機１４、放熱器（水冷媒熱交換器）１５、減圧手段１７、蒸発器（空気熱交換器）１６が冷媒配管で環状に接続されて構成される。蒸発器１６の近傍には、蒸発器１６に空気を送風する送風ファン１６Ａが設けられる。ヒートポンプ回路１３を循環する冷媒には、炭酸ガス、ＨＦＣ冷媒等を用いることができる。冷媒を炭酸ガスとした場合には、水冷媒熱交換器１５にて、水を８０℃以上に加熱することができる。加熱生成された湯水は、加熱循環ポンプ８によって加熱回路３を流れ、貯湯タンク４の上部から貯留される。
The hot water supply apparatus 100 uses a heat pump device as the heating means 2. The heat pump apparatus is configured as a heat pump unit separately from the hot water storage tank unit 1.
The heat pump unit (heating means) 2 accommodates a heat pump circuit 13 in which a refrigerant circulates. The heat pump circuit 13 is configured by annularly connecting a compressor 14, a radiator (water refrigerant heat exchanger) 15, a pressure reducing means 17, and an evaporator (air heat exchanger) 16 with refrigerant pipes. In the vicinity of the evaporator 16, a blower fan 16A for blowing air to the evaporator 16 is provided. As the refrigerant circulating through the heat pump circuit 13, carbon dioxide gas, HFC refrigerant or the like can be used. When the refrigerant is carbon dioxide gas, the water-refrigerant heat exchanger 15 can heat water to 80 ° C. or higher. The heated and generated hot and cold water flows through the heating circuit 3 by the heating and circulating pump 8 and is stored from the top of the hot water storage tank 4.
なお、貯湯タンクユニット１とヒートポンプユニット２とを一体としてもよい。この場合、貯湯タンク４とヒートポンプ回路１３とが１つの筐体の内部に収容される。なお、貯湯タンク４の内部の湯水の加熱方法は、特に限定されない。例えば、冷媒配管を貯湯タンク４の外周に巻きつけて、放熱器１５を構成してもよい。この場合、圧縮機１４から吐出される高温冷媒が、貯湯タンク４の外周に巻きつけられた冷媒配管（放熱器１５）に循環して、貯湯タンク４内部の湯水に放熱する。これにより湯水が加熱される。また、ヒートポンプ装置以外の加熱手段を用いてもよい。例えば、貯湯タンク４の内部に電気ヒータを設けて湯水を加熱してもよい。 The hot water storage tank unit 1 and the heat pump unit 2 may be integrated. In this case, the hot water storage tank 4 and the heat pump circuit 13 are accommodated in one casing. In addition, the heating method of the hot water of the inside of the hot water storage tank 4 is not specifically limited. For example, the radiator pipe may be wound around the outer circumference of the hot water storage tank 4 to constitute the radiator 15. In this case, the high-temperature refrigerant discharged from the compressor 14 circulates through the refrigerant pipe (radiator 15) wound around the outer circumference of the hot water storage tank 4 and dissipates heat to the hot water in the hot water storage tank 4. The hot and cold water is thereby heated. Moreover, you may use heating means other than a heat pump apparatus. For example, an electric heater may be provided inside the hot water storage tank 4 to heat the hot and cold water.
次に、特に、貯湯タンクユニット１の内部構造について、図２以下を参照しながら説明する。図２は、貯湯タンクユニット１およびヒートポンプユニット２の内部構造を示す正面図、図３は、貯湯タンクユニット１の内部構造を示す分解斜視図である。 Next, the internal structure of the hot water storage tank unit 1 will be described with reference to FIG. FIG. 2 is a front view showing the internal structure of the hot water storage tank unit 1 and the heat pump unit 2, and FIG. 3 is an exploded perspective view showing the internal structure of the hot water storage tank unit 1.
貯湯タンク４は、底板１８に載置され、支持具４Ａによって底板１８に固定される。底板１８は、貯湯タンクユニット１の外郭としての筐体１９の一部である。貯湯タンク４の前方には、給水経路６、給湯経路１０、風呂循環回路５０、追い焚き回路４０等を構成する配管が配置される。貯湯タンクユニット１は周囲が筐体１９で囲われて構成される。 The hot water storage tank 4 is placed on the bottom plate 18 and fixed to the bottom plate 18 by the support 4A. The bottom plate 18 is a part of a housing 19 as an outer shell of the hot water storage tank unit 1. In front of the hot water storage tank 4, pipes constituting the water supply path 6, the hot water supply path 10, the bath circulation circuit 50, the reheating circuit 40 and the like are arranged. The hot water storage tank unit 1 is configured such that the periphery is surrounded by a housing 19.
図３に示すように、筐体１９は、複数の金属製の薄板で構成される。筐体１９は、給湯経路１０等を構成する配管が配置された貯湯タンクユニット１の前方側を覆う前板１９Ａ、前板１９Ａ側から見て右側方を覆う右板１９Ｂ、前板１９Ａ側から見て左側方を覆う左板１９Ｃ、前板１９Ａと反対側を覆う後板１９Ｄ、上方を覆う上板１９Ｅ、下方を覆う底板１８を有する。それぞれの薄板（１８、１９Ａ〜１９Ｅ）は、金属製の薄板で形成される。なお、前板１９Ａは、加熱回路３、給湯経路１０、風呂循環回路５０等の接続部が設けられた下部板と、下部板の上方に設けられる上部板とで構成される。底板１８には、貯湯タンクユニット１を支持する複数の脚部２４が接続される。 As shown in FIG. 3, the housing 19 is composed of a plurality of thin metal plates. The housing 19 is a front plate 19A that covers the front side of the hot water storage tank unit 1 in which the pipes constituting the hot water supply passage 10 are disposed, a right plate 19B that covers the right side when viewed from the front plate 19A side, and the front plate 19A side The left plate 19C covers the left side, the rear plate 19D covers the opposite side with the front plate 19A, the upper plate 19E covers the upper side, and the bottom plate 18 covers the lower side. Each sheet (18, 19A-19E) is formed of a sheet made of metal. The front plate 19A is configured of a lower plate provided with connections of the heating circuit 3, the hot water supply path 10, the bath circulation circuit 50 and the like, and an upper plate provided above the lower plate. A plurality of legs 24 supporting the hot water storage tank unit 1 are connected to the bottom plate 18.
貯湯タンク４は、耐食性に優れたステンレス製の薄板で構成される。貯湯タンク４は、ステンレス鋼板を絞り加工して、半円球状に成型した上部材２０および下部材２２と、ステンレス鋼板をロール加工および溶接接合して円筒状に成型した胴部材２１とで構成される。上部材２０は、胴部材２１の上方にＴＩＧ溶接によって溶接接合される。また、下部材２２は、胴部材２１の下方にＴＩＧ溶接によって溶接接合される。これにより、貯湯タンク４は、上部および下部が半円球状、胴部が円筒状となり、内部に閉空間が形成される。 The hot water storage tank 4 is formed of a thin plate made of stainless steel excellent in corrosion resistance. The hot water storage tank 4 is composed of an upper member 20 and a lower member 22 formed by drawing a stainless steel plate into a semispherical shape, and a body member 21 formed by rolling and welding a stainless steel plate into a cylindrical shape. Ru. The upper member 20 is welded to the upper side of the body member 21 by TIG welding. The lower member 22 is welded to the lower side of the body member 21 by TIG welding. As a result, the upper and lower portions of the hot water storage tank 4 are semi-spherical, the body is cylindrical, and a closed space is formed inside.
上部材２０には、水配管３Ｃ、出湯管９Ａ等が接続される接続口（２３Ａ、２３Ｂ）が設けられる。水配管３Ｃは、接続口２３の１つである湯流入口２３Ａに接続される。また、出湯管９Ａは、接続口２３の１つである湯流出口２３Ｂに接続される。また、下部材２２には、給水管６、水配管３Ａ等が接続される接続口（図示せず）が設けられている。また、貯湯タンク４の中央付近から湯水を取り出す場合には、胴部材２１に、第２出湯管を接続する接続口（図示せず）を設ける。 The upper member 20 is provided with connection ports (23A, 23B) to which the water piping 3C, the hot water discharge pipe 9A, and the like are connected. The water pipe 3C is connected to the hot water inlet 23A, which is one of the connection ports 23. The hot water discharge pipe 9A is connected to a hot water outlet 23B which is one of the connection ports 23. Further, the lower member 22 is provided with a connection port (not shown) to which the water supply pipe 6, the water pipe 3A, and the like are connected. Further, when the hot and cold water is taken out from the vicinity of the center of the hot water storage tank 4, the trunk member 21 is provided with a connection port (not shown) for connecting the second hot water discharge pipe.
貯湯タンク４の周囲は、断熱材（５、２５、２６）で覆われている。これにより、保温性能を向上させる。また、貯湯タンク４の周囲は、熱伝導率の異なる第１断熱材２５と第２断熱材２６とによって覆われている。 The periphery of the hot water storage tank 4 is covered with a heat insulating material (5, 25, 26). This improves the heat retention performance. Further, the periphery of the hot water storage tank 4 is covered with a first heat insulating material 25 and a second heat insulating material 26 having different thermal conductivity.
本実施の形態では、第１断熱材２５として、真空断熱材を用いる。真空断熱材２５は、多孔質構造のガラス繊維板、または、グラスウール等を芯材とし、この芯材を金属製（例えば、アルミニウム）の外装で覆ったものである。真空断熱材２５は、平板状（シート状）に形成される。真空断熱材２５は、内部が１．０〜２００ＰＡ程度の真空状態で密封されている。これにより、真空断熱材の厚み方向（外装、芯材、外装が順に並んだ方向）の熱伝導率は０．００３Ｗ／Ｍ・Ｋ程度である。これは、第２断熱材２６として用いられる発泡スチロールや発泡ウレタンの熱伝導率の１０分の１程度である。一方、真空断熱材２５は、外装としてアルミニウム等の金属を用いているから、外装を伝って面方向に熱が伝達されやすい。よって、真空断熱材２５を用いる場合、外装を介して生じる熱伝達を抑制する必要がある。 In the present embodiment, a vacuum heat insulating material is used as the first heat insulating material 25. The vacuum heat insulating material 25 is a glass fiber board having a porous structure, or glass wool or the like as a core material, and the core material is covered with a metal (for example, aluminum) exterior. The vacuum heat insulating material 25 is formed in a flat plate shape (sheet shape). The inside of the vacuum heat insulating material 25 is sealed in a vacuum state of about 1.0 to 200 PA. Thus, the thermal conductivity of the vacuum heat insulating material in the thickness direction (the direction in which the exterior, the core material, and the exterior are sequentially arranged) is about 0.003 W / M · K. This is about 1/10 of the thermal conductivity of the expanded polystyrene and the urethane foam used as the second heat insulating material 26. On the other hand, since the vacuum heat insulating material 25 uses a metal such as aluminum as the exterior, heat is easily transmitted in the surface direction along the exterior. Therefore, when using the vacuum heat insulating material 25, it is necessary to suppress the heat transfer which arises via an exterior.
真空断熱材２５は、貯湯タンク４の胴部材２１の外方を、胴部材２１の周囲に沿って円弧状に覆うように配置される。真空断熱材２５は、円筒状の胴部材２１と同心円状になるようにロール加工される。ロール加工された真空断熱材２５は、貯湯タンク４の外方に巻きつけられる。真空断熱材２５は、胴部材２１の外周のうち１８０度以上の部分を覆うように配置されることが好ましい。本実施の形態では、真空断熱材２５は、貯湯タンク４の外周のうち、右側方、背面、左側方を覆うように配置される。真空断熱材２５は、筐体１９のうち、右板１９Ｂ、左板１９Ｃ、後板１９Ｄと対向して配置される。 The vacuum heat insulating material 25 is disposed so as to cover the outside of the body member 21 of the hot water storage tank 4 in an arc shape along the periphery of the body member 21. The vacuum heat insulating material 25 is rolled so as to be concentric with the cylindrical body member 21. The rolled vacuum insulation material 25 is wound around the hot water storage tank 4. The vacuum heat insulating material 25 is preferably disposed to cover a portion of 180 degrees or more of the outer periphery of the trunk member 21. In the present embodiment, the vacuum heat insulating material 25 is disposed to cover the right side, the back side, and the left side of the outer periphery of the hot water storage tank 4. The vacuum heat insulating material 25 is disposed to face the right plate 19B, the left plate 19C, and the rear plate 19D in the housing 19.
また、真空断熱材２５は、胴部材２１の外周のうち、下方側よりも上方側の外周面を多く覆うように配置されることが好ましい。貯湯タンク４の内部の温度は、上方側が下方側と比較して高くなる。したがって、貯湯タンク４の上方側の外周を真空断熱材２５によって覆うことで、発泡スチロール等よりも相対的に高価な真空断熱材２５の使用量を抑制してコスト削減を図りつつ、放熱ロスを低減する。本実施の形態では、真空断熱材２５は、その下端が胴部材２１の外方を覆うように、また、その上端が上部材２０の外方を覆うように、貯湯タンク４の周囲に配置される。なお、真空断熱材２５の下端が、下部材２２の外方を覆うように配置されていてもよい。なお、１枚の真空断熱材で、第１断熱材２５を構成してもよく、複数枚の真空断熱材で第１断熱材２５を構成してもよい。 Further, the vacuum heat insulating material 25 is preferably disposed so as to cover the outer peripheral surface of the upper side of the outer periphery of the body member 21 more than the lower side. The temperature inside the hot water storage tank 4 is higher in the upper side than in the lower side. Therefore, by covering the outer periphery on the upper side of the hot water storage tank 4 with the vacuum heat insulating material 25, the amount of use of the vacuum heat insulating material 25 which is relatively more expensive than expanded polystyrene and the like is suppressed to reduce cost while reducing cost. Do. In the present embodiment, the vacuum heat insulating material 25 is disposed around the hot water storage tank 4 so that the lower end thereof covers the outer side of the body member 21 and the upper end thereof covers the outer side of the upper member 20. Ru. The lower end of the vacuum heat insulating material 25 may be disposed to cover the outer side of the lower member 22. Note that the first heat insulating material 25 may be formed of one vacuum heat insulating material, or the first heat insulating material 25 may be formed of a plurality of vacuum heat insulating materials.
本実施の形態では、第２断熱材２６として、第１断熱材２５よりも熱伝導率の高い材質の断熱材を用いる。第２断熱材２６は、第１断熱材２５が貯湯タンク４の周囲を覆う箇所以外の箇所を覆う。すなわち、貯湯タンク４は、第１断熱材２５と第２断熱材２６とによって、全体が覆われる。なお、第１断熱材２５と第２断熱材２６とを重ね合わせて、貯湯タンク４の周囲を覆ってもよい。このとき、第１断熱材２５が第２断熱材２６の外方に位置してもよく、第２断熱材２６が第１断熱材２５の外方に位置してもよい。 In the present embodiment, a heat insulator made of a material having a thermal conductivity higher than that of the first heat insulator 25 is used as the second heat insulator 26. The second heat insulating material 26 covers a place other than the place where the first heat insulating material 25 covers the periphery of the hot water storage tank 4. That is, the hot water storage tank 4 is entirely covered with the first heat insulating material 25 and the second heat insulating material 26. The first heat insulating material 25 and the second heat insulating material 26 may be overlapped to cover the periphery of the hot water storage tank 4. At this time, the first heat insulating material 25 may be positioned outward of the second heat insulating material 26, and the second heat insulating material 26 may be positioned outward of the first heat insulating material 25.
第２断熱材２６には、成形性に優れた材料を用いることができる。例えば、第２断熱材２６は、発泡スチロール、発泡ウレタン等で構成される。第２断熱材２６に成形性に優れた材料を用いると、貯湯タンク４に設けられた接続口２３の形状や、貯湯タンクユニット１の配管の取付位置に合わせて断熱材を成型して、貯湯タンク４の周囲を覆うことができる。よって、これにより、貯湯タンク４からの放熱ロスを抑制する。第２断熱材２６は、少なくとも、接続口２３が設けられる貯湯タンク４の上方および下方と、給湯経路１０等の配管が配置される貯湯タンク４の前方とを覆うように配置される。なお、第２断熱材２６が、貯湯タンク４の右側方、背面、左側方に配置されてもよい。 For the second heat insulating material 26, a material having excellent formability can be used. For example, the second heat insulating material 26 is made of expanded polystyrene, expanded urethane or the like. When a material having excellent formability is used for the second heat insulating material 26, the heat insulating material is molded according to the shape of the connection port 23 provided in the hot water storage tank 4 and the installation position of the piping of the hot water storage tank unit 1 The periphery of the tank 4 can be covered. Therefore, the heat radiation loss from the hot water storage tank 4 is suppressed by this. The second heat insulating material 26 is arranged to cover at least the upper and lower sides of the hot water storage tank 4 in which the connection port 23 is provided and the front of the hot water storage tank 4 in which piping such as the hot water supply path 10 is disposed. The second heat insulating material 26 may be disposed on the right side, the back side, or the left side of the hot water storage tank 4.
第２断熱材２６は、複数に分割されて、貯湯タンク４の周囲に配置される。本実施の形態では、第２断熱材２６は、貯湯タンク４の前方を覆う前断熱材２６Ａ、上方を覆う上断熱材２６Ｂ、下方を覆う下断熱材２６Ｃを有する。前断熱材２６Ａは、前板１９Ａと対向して配置される。上断熱材２６Ｂは、上板１９Ｅと対向して配置される。下断熱材２６Ｃは、底板１８と対向して配置される。 The second heat insulating material 26 is divided into a plurality of pieces and disposed around the hot water storage tank 4. In the present embodiment, the second heat insulator 26 has a front heat insulator 26A covering the front of the hot water storage tank 4, an upper heat insulator 26B covering the upper side, and a lower heat insulator 26C covering the lower side. The front heat insulating material 26A is disposed to face the front plate 19A. The upper heat insulating material 26B is disposed to face the upper plate 19E. The lower heat insulating material 26C is disposed to face the bottom plate 18.
第２断熱材２６として用いる発泡スチロールや発泡ウレタン等の熱伝導率は、０．０３Ｗ／ＭＫ程度である。よって、第２断熱材２６の熱伝導率は、第１断熱材２５として用いる真空断熱材と比較すると、１０倍程度の大きさである。そこで、断熱性能を向上させるため、第２断熱材２６の厚みを、第１断熱材２５の厚みよりも大きくする。 The thermal conductivity of the expanded polystyrene used as the second heat insulating material 26 or the expanded urethane is about 0.03 W / MK. Therefore, the thermal conductivity of the second heat insulating material 26 is about 10 times as large as that of the vacuum heat insulating material used as the first heat insulating material 25. Therefore, in order to improve the heat insulating performance, the thickness of the second heat insulating material 26 is made larger than the thickness of the first heat insulating material 25.
ここで、第２断熱材２６は、その一部が、第１断熱材２５よりも外方に位置するように配置される。これにより、第２断熱材２６と筐体１９が、第１断熱材２５と筐体１９よりも近接する。これにより、第１断熱材２５と筐体１９との間に間隙が形成される。よって、第１断熱材２５と筐体１９の内表面との接触を防止する。第１断熱材（真空断熱材）２５は、金属製の外装によって覆われている。よって、外装を伝って熱が伝達されやすい。第１断熱材２５と筐体１９との接触を防止することで、外装を伝った熱伝達を防止する。第１断熱材２５は、シール部材２７によって、第２断熱材２６に固定される。 Here, the second heat insulating material 26 is disposed such that a portion thereof is positioned outward of the first heat insulating material 25. As a result, the second heat insulating material 26 and the housing 19 are closer to each other than the first heat insulating material 25 and the housing 19. Thereby, a gap is formed between the first heat insulating material 25 and the housing 19. Therefore, the contact between the first heat insulating material 25 and the inner surface of the housing 19 is prevented. The first heat insulating material (vacuum heat insulating material) 25 is covered with a metal outer covering. Therefore, heat is likely to be transmitted along the exterior. By preventing the contact between the first heat insulating material 25 and the housing 19, the heat transfer transmitted through the exterior is prevented. The first heat insulating material 25 is fixed to the second heat insulating material 26 by the seal member 27.
図４は、貯湯タンク４の周囲を第１断熱材２５で覆い、第１断熱材２５の表面にシール部材２７を貼り付けたときの上面図である。また、図５は、貯湯タンク４の周囲を第１断熱材２５で覆い、第１断熱材２５の表面にシール部材２７を貼り付けたときの斜視図である。貯湯タンク４の胴部材２１の外周のうち１８０度以上の部分が第１断熱材２５で覆われている。第１断熱材２５の表面には伸縮性のあるシール部材２７が貼られている。なお、説明のために、図４には、第２断熱材２６や、配管等を図示していない。 FIG. 4 is a top view when the periphery of the hot water storage tank 4 is covered with the first heat insulating material 25 and the seal member 27 is attached to the surface of the first heat insulating material 25. Further, FIG. 5 is a perspective view when the periphery of the hot water storage tank 4 is covered with the first heat insulating material 25 and the seal member 27 is attached to the surface of the first heat insulating material 25. A portion of 180 degrees or more of the outer periphery of the body member 21 of the hot water storage tank 4 is covered with the first heat insulating material 25. An elastic seal member 27 is attached to the surface of the first heat insulating material 25. In addition, the 2nd heat insulating material 26, piping, etc. are not shown in figure in FIG. 4 for description.
シール部材２７は伸縮性を有する。シール部材２７としては、ＥＰＤＭやウレタン等を用いることができる。また、シール部材２７は、第１断熱材２５の表面に、筐体１９の内表面と対向して貼り付けられる。図３、図４に示すように、シール部材２７は、第１断熱材２５の表面に鉛直方向に貼り付けられる。特に、シール部材２７は、第１断熱材２５と筐体１９の内表面とが最も近接する位置に設けられる。本実施の形態では、シール部材２７は、第１断熱材２５と右板１９Ｂとが近接する位置、第１断熱材２５と後板１９Ｄとが近接する位置、第１断熱材２５と左板１９Ｃとが近接する位置の３箇所に設けられる。すなわち、シール部材２７は、円筒状の貯湯タンク４の中心から、９０度毎に、合計３箇所に設けられる。 The seal member 27 has stretchability. As the seal member 27, EPDM, urethane, or the like can be used. In addition, the seal member 27 is attached to the surface of the first heat insulating material 25 so as to face the inner surface of the housing 19. As shown in FIGS. 3 and 4, the seal member 27 is attached to the surface of the first heat insulating material 25 in the vertical direction. In particular, the seal member 27 is provided at a position where the first heat insulating material 25 and the inner surface of the housing 19 are closest to each other. In the present embodiment, the seal member 27 is a position where the first heat insulator 25 and the right plate 19B are close, a position where the first heat insulator 25 and the rear plate 19D are close, and the first heat insulator 25 and the left plate 19C. And are provided at three positions adjacent to each other. That is, the sealing members 27 are provided at three locations in total at every 90 degrees from the center of the cylindrical hot water storage tank 4.
第１断熱材２５は、筐体１９の内表面との間に間隙を設けて配置されるが、図４に示すように、シール部材２７は、無負荷状態において、その厚みが間隙よりも大きい。これにより、シール部材２７は、無負荷状態において、底板１８よりも外側まで突出する。また、シール部材２７は、無負荷状態において、第２断熱材２６よりも外側まで突出する。 The first heat insulating material 25 is disposed with a gap between itself and the inner surface of the housing 19, but as shown in FIG. 4, the thickness of the seal member 27 is larger than the gap under no load condition. . Thereby, the seal member 27 protrudes to the outside of the bottom plate 18 in the unloaded state. In addition, the seal member 27 protrudes to the outside of the second heat insulating material 26 in a no-load state.
底板１８には、前板１９Ａ、右板１９Ｂ、左板１９Ｃ、後板１９Ｄが取り付けられる。よって、前板１９Ａ、右板１９Ｂ、左板１９Ｃ、後板１９Ｄが取り付けられると、シール部材２７は、前板１９Ａ、右板１９Ｂ、左板１９Ｃ、後板１９Ｄの内表面のそれぞれと当接する。また、シール部材２７は、前板１９Ａ、右板１９Ｂ、左板１９Ｃ、後板１９Ｄの内表面によって、第１断熱材２５に押さえつけられる。 A front plate 19A, a right plate 19B, a left plate 19C, and a rear plate 19D are attached to the bottom plate 18. Thus, when the front plate 19A, the right plate 19B, the left plate 19C and the rear plate 19D are attached, the seal member 27 abuts on the inner surfaces of the front plate 19A, the right plate 19B, the left plate 19C and the rear plate 19D. . The seal member 27 is pressed against the first heat insulating material 25 by the inner surfaces of the front plate 19A, the right plate 19B, the left plate 19C, and the rear plate 19D.
次に、給湯装置１００の動作を説明する。市水から給水経路（給水管）６に供給される水は、貯湯タンク４の下部から流入する。貯湯タンク４の水を加熱する加熱運転において、貯湯タンク４の下部の水は、加熱循環ポンプ８によって、水配管３Ａを流れてヒートポンプユニット２の放熱器１５に送られる。 Next, the operation of the hot water supply apparatus 100 will be described. Water supplied from the city water to the water supply path (water supply pipe) 6 flows in from the lower part of the hot water storage tank 4. In the heating operation of heating the water of the hot water storage tank 4, the water in the lower part of the hot water storage tank 4 flows through the water pipe 3A by the heating circulation pump 8 and is sent to the radiator 15 of the heat pump unit 2.
ヒートポンプユニット２では、圧縮機１４を運転して冷媒を圧縮する。圧縮機１４で圧縮されて吐出された高温の冷媒は、放熱器１５に流入する。高温の冷媒は、放熱器１５で水と熱交換して放熱する。これにより、水は加熱され湯となる。生成された湯は、水配管（３Ｂ、３Ｃ）を流れ、上部（湯流入口２３Ａ）から貯湯タンク４に流入する。これにより、貯湯タンク４に湯が貯留される。 In the heat pump unit 2, the compressor 14 is operated to compress the refrigerant. The high temperature refrigerant compressed and discharged by the compressor 14 flows into the radiator 15. The high temperature refrigerant exchanges heat with water in the radiator 15 and radiates heat. Thus, the water is heated and becomes hot water. The generated hot water flows through the water pipes (3B, 3C) and flows into the hot water storage tank 4 from the upper portion (hot water inlet 23A). Thereby, hot water is stored in the hot water storage tank 4.
貯湯タンク４に貯留された湯は、混合弁（９、５１）によって、給水分岐管（６Ａ、６Ｂ）を流れた水と混合され所定の温度となる。所定温度に混合された湯水は、給湯端末１１、浴槽７０等に供給される。 The hot water stored in the hot water storage tank 4 is mixed with the water flowing through the water supply branch pipes (6A, 6B) by the mixing valves (9, 51) to reach a predetermined temperature. Hot and cold water mixed to a predetermined temperature is supplied to the hot water supply terminal 11, the bath 70, and the like.
ここで、貯湯タンク４に湯が貯留されると、貯湯タンク４の周囲の温度が上昇して、シール部材２７の周囲温度も上昇する。また、貯湯タンクユニット１は、屋外に配置されることが多いから、外気温度が高い場合や、貯湯タンクユニット１に直射日光が当たった場合にも、貯湯タンクユニット１の内部の温度が上昇し（例えば、５０度以上）、シール部材の周囲温度が上昇する。このような状況が長期間にわたると、シール部材２７の接着力が次第に失われ、シール部材２７がはがれるおそれがある。特に、発泡スチロールや発泡ウレタンは接着性に優れておらず、シール部材２７のはがれが生じやすい。 Here, when hot water is stored in the hot water storage tank 4, the temperature around the hot water storage tank 4 rises, and the ambient temperature of the seal member 27 also rises. Further, since the hot water storage tank unit 1 is often arranged outdoors, the temperature inside the hot water storage tank unit 1 rises even when the outside air temperature is high or when the hot water storage tank unit 1 is exposed to direct sunlight. The ambient temperature of the seal member rises (for example, 50 degrees or more). If such a situation is extended over a long period of time, the adhesive force of the seal member 27 is gradually lost, and the seal member 27 may be peeled off. In particular, expanded polystyrene and expanded urethane are not excellent in adhesion, and the seal member 27 is easily peeled off.
そこで、シール部材２７の少なくとも一部を、筐体１９の内表面に当接させるようにする。これにより、シール部材２７が筐体１９によって押さえつけられる。これにより、シール部材２７のはがれを抑制して、放熱ロスを抑制する。また、第１断熱材２５のずれを防止し、放熱ロスを抑制する。 Therefore, at least a part of the seal member 27 is brought into contact with the inner surface of the housing 19. Thus, the seal member 27 is pressed by the housing 19. Thereby, the peeling of the sealing member 27 is suppressed, and the heat radiation loss is suppressed. Moreover, the shift | offset | difference of the 1st heat insulating material 25 is prevented, and a thermal radiation loss is suppressed.
筐体１９を構成する金属製の薄板のうち、特に、前板、１９Ａ、右板１９Ｂ、左板１９Ｃ、後板１９Ｄ、上板１９Ｅは、底板１８と比較して板厚が薄い。よって、貯湯タンク４の内部に配置された機能部品（例えば、加熱循環ポンプ８）が発する振動により、筐体１９も振動する場合がある。また、筐体１９が共振して、騒音を生じさせる場合もある。ここで、シール部材２７は伸縮性を有する。特に、シール部材２７が厚み方向に伸縮性を有していると、シール部材２７が振動を吸収して筐体１９の振動を防止する。これにより、騒音の発生を防止する。また、シール部材２７の厚みを、第１断熱材２５と筐体１９の内表面との間の間隙よりも大きくする。これにより、第１断熱材２５と筐体１９との接触を防止して放熱ロスを低減させる。また、シール部材２７を筐体１９によって第１断熱材２５側に押さえつけて、はがれを防止する。また、筐体１９は、内側からシール部材２７によって支持されることになり、強度が増大する。 Among the thin metal plates constituting the housing 19, particularly, the front plate 19A, the right plate 19B, the left plate 19C, the rear plate 19D, and the upper plate 19E are thinner than the bottom plate 18. Therefore, the housing 19 may vibrate due to the vibration emitted from the functional component (for example, the heating circulation pump 8) disposed inside the hot water storage tank 4. In addition, the housing 19 may resonate to generate noise. Here, the sealing member 27 has elasticity. In particular, when the seal member 27 has elasticity in the thickness direction, the seal member 27 absorbs the vibration to prevent the vibration of the housing 19. This prevents the generation of noise. Further, the thickness of the sealing member 27 is made larger than the gap between the first heat insulating material 25 and the inner surface of the housing 19. Thereby, the contact between the first heat insulating material 25 and the casing 19 is prevented, and the heat radiation loss is reduced. Further, the seal member 27 is pressed to the first heat insulating material 25 side by the housing 19 to prevent peeling. In addition, the housing 19 is supported by the seal member 27 from the inside, and the strength is increased.
また、貯湯タンク４には、減圧弁７の設定圧力以上の内圧が生じる。また、給湯端末１１等が開放されるか否かによって、貯湯タンク４には異なる内圧が生じる。給湯端末１１等を閉塞した状態では、減圧弁７の設定圧力が貯湯タンク４に加わる。この圧力は貯湯タンク４の全体に均等に加わる。これにより、貯湯タンク４は、胴部材２１の外周が、上部材２０、下部材２２の外周よりも大きくなる（図６（Ｂ））。 Further, an internal pressure equal to or higher than the set pressure of the pressure reducing valve 7 is generated in the hot water storage tank 4. Further, different internal pressures are generated in the hot water storage tank 4 depending on whether the hot water supply terminal 11 or the like is opened. The set pressure of the pressure reducing valve 7 is applied to the hot water storage tank 4 when the hot water supply terminal 11 and the like are closed. This pressure is evenly applied to the entire hot water storage tank 4. As a result, in the hot water storage tank 4, the outer periphery of the body member 21 becomes larger than the outer peripheries of the upper member 20 and the lower member 22 (FIG. 6 (B)).
図６は、給湯端末１１等が開放されている場合（図６（Ａ））と閉塞されている場合（図６（Ｂ））との貯湯タンク４の形状変化を示す正面図である。 FIG. 6 is a front view showing the shape change of the hot water storage tank 4 when the hot water supply terminal 11 and the like are open (FIG. 6 (A)) and when it is closed (FIG. 6 (B)).
図６（Ｂ）に示すように、給湯端末１１が閉塞された状態にあると、貯湯タンク４の外周のうち、特に、胴部材２１の高さ方向において中央付近の外周が、筐体１９に近づくように変形する。すなわち、図６（Ｂ）に示す胴部材２１の中央付近の円周Ｌ２が、図６（Ａ）に示す胴部材２１の中央付近の円周Ｌ１よりも大きくなる。よって、貯湯タンク４の胴部材２１の周囲を覆う第１断熱材２５も筐体１９の内表面に近づく。しかしながら、第１断熱材２５と筐体１９とが最も近接する位置にシール部材２７が貼り付けられている。これにより、第１断熱材２５と筐体１９との接触を防止する。特に、シール部材２７が鉛直方向に設けられているので、胴部材２１の周囲のうち、いずれの位置が変形しても、シール部材２７と筐体１９とが接触する。よって、第１断熱材２５と筐体１９との接触を防止して、放熱ロスを防ぐことができる。なお、シール部材２７は、連続的に設けられていてもよく、鉛直方向に断続的に設けられていてもよい。 As shown in FIG. 6 (B), when the hot water supply terminal 11 is in the closed state, the outer periphery around the center in the height direction of the body member 21 among the outer peripheries of the hot water storage tank 4 is Transforms closer. That is, the circumference L2 near the center of the body member 21 shown in FIG. 6 (B) is larger than the circumference L1 near the center of the body member 21 shown in FIG. 6 (A). Therefore, the first heat insulating material 25 covering the periphery of the body member 21 of the hot water storage tank 4 also approaches the inner surface of the housing 19. However, the seal member 27 is attached at a position where the first heat insulating material 25 and the housing 19 are closest to each other. Thereby, the contact of the 1st heat insulating material 25 and the housing | casing 19 is prevented. In particular, since the seal member 27 is provided in the vertical direction, the seal member 27 and the housing 19 contact each other regardless of the position of the periphery of the body member 21. Therefore, the contact of the 1st heat insulating material 25 and the housing | casing 19 can be prevented, and a thermal radiation loss can be prevented. The sealing member 27 may be provided continuously or may be provided intermittently in the vertical direction.
（実施の形態２）
図７は、本実施の形態における給湯装置１００の貯湯タンクユニット１の内部構造を示す斜視図である。図８は、貯湯タンクユニット１の内部構造を示す上面図である。本実施の形態において、実施の形態１と同一の箇所については同一符号を付し、その詳細な説明は省略する。なお、説明のため、図７、図８には、第２断熱材２６や、配管等を図示していない。
Second Embodiment
FIG. 7 is a perspective view showing an internal structure of hot water storage tank unit 1 of hot water supply apparatus 100 in the present embodiment. FIG. 8 is a top view showing the internal structure of the hot water storage tank unit 1. In the present embodiment, the same parts as those of the first embodiment are denoted by the same reference numerals, and the detailed description thereof is omitted. In addition, the 2nd heat insulating material 26, piping, etc. are not shown in figure in FIG. 7, FIG. 8 for description.
図７に示すように、本実施の形態における第１断熱材（真空断熱材）２５は、貯湯タンク４の外方を覆った状態で、円筒状の貯湯タンク４（胴部材２１）を円弧状に覆う円弧状部２５Ａと、筐体１９の内表面と平行な平面部（２５Ｂ、２５Ｃ）とを有している。平面部２５Ｂは、右板１９Ｂの内表面と平行に設けられ、平面部２５Ｃは、左板１９Ｃの内表面と平行に設けられる。平面部２５Ｂと平面部２５Ｃとの間に円弧状部２５Ａが設けられる。また、平面部（２５Ｂ、２５Ｃ）には、シール部材２７が貼り付けられ、第２断熱材２６と固定される。図７に示すように、シール部材２７は、平面部（２５Ｂ、２５Ｃ）の四方を囲うようにロの字状に設けられている。 As shown in FIG. 7, the first heat insulating material (vacuum heat insulating material) 25 in the present embodiment covers the outside of the hot water storage tank 4 and arcs the cylindrical hot water storage tank 4 (body member 21). And a flat portion (25B, 25C) parallel to the inner surface of the housing 19. The flat portion 25B is provided in parallel with the inner surface of the right plate 19B, and the flat portion 25C is provided in parallel with the inner surface of the left plate 19C. An arc-shaped portion 25A is provided between the flat portion 25B and the flat portion 25C. Further, the seal member 27 is attached to the flat portions (25 B, 25 C) and fixed to the second heat insulating material 26. As shown in FIG. 7, the sealing member 27 is provided in a rectangular shape so as to surround four sides of the flat portions (25 B, 25 C).
第１断熱材２５として真空断熱材を用いた場合、真空断熱材２５を貯湯タンク４の周囲に配置するために、平板状の真空断熱材２５を、ロール加工して円弧状にする。このように円弧状に加工された真空断熱材２５を貯湯タンク４の周囲に配置すると、真空断熱材２５が元の形状（平板状）に戻ろうとする。これにより、真空断熱材２５と筐体１９とが接触しやすい。 When a vacuum heat insulating material is used as the first heat insulating material 25, in order to arrange the vacuum heat insulating material 25 around the hot water storage tank 4, the flat vacuum heat insulating material 25 is rolled into an arc shape. When the vacuum heat insulating material 25 thus processed into an arc shape is disposed around the hot water storage tank 4, the vacuum heat insulating material 25 tries to return to the original shape (flat shape). Thereby, the vacuum heat insulating material 25 and the housing | casing 19 contact easily.
ここで、第１断熱材（真空断熱材）２５を、筐体１９の内表面と平行な平面部（２５Ｂ、２５Ｃ）を設けて貯湯タンク４の周囲に配置する。また、平面部（２５Ｂ、２５Ｃ）にシール部材２７を貼り付ける。これにより、平面部（２５Ｂ、２５Ｃ）を、シール部材２７を介して筐体１９によって押さえつける。その結果、第１断熱材２５を筐体１９により押さえつけて強固に固定する。また、第１断熱材２５と筐体１９との間に、間隙を設けて、熱伝達による放熱を抑制する。 Here, the first heat insulating material (vacuum heat insulating material) 25 is disposed around the hot water storage tank 4 by providing flat portions (25 B, 25 C) parallel to the inner surface of the housing 19. Further, the seal member 27 is attached to the flat portions (25B, 25C). Thereby, the flat portion (25 B, 25 C) is pressed by the housing 19 via the seal member 27. As a result, the first heat insulating material 25 is held down by the housing 19 and firmly fixed. In addition, a gap is provided between the first heat insulating material 25 and the housing 19 to suppress heat radiation due to heat transfer.
第１断熱材２５は、筐体１９の内表面との間に間隙を設けて配置されるが、図８に示すように、平面部（２５Ｂ、２５Ｃ）に貼り付けられたシール部材２７は、無負荷状態において、その厚みが間隙よりも大きい。これにより、シール部材２７は、無負荷状態において、底板１８の外側まで突出する。よって、前板１９Ａ、右板１９Ｂ、左板１９Ｃ、後板１９Ｄが取り付けられると、シール部材２７は、前板１９Ａ、右板１９Ｂ、左板１９Ｃ、後板１９Ｄの内表面のそれぞれと当接する。また、シール部材２７は、前板１９Ａ、右板１９Ｂ、左板１９Ｃ、後板１９Ｄの内表面によって、第１断熱材２５側に押さえつけられる。 The first heat insulating material 25 is disposed with a gap between itself and the inner surface of the housing 19. As shown in FIG. 8, the sealing member 27 attached to the flat portion (25B, 25C) is In the unloaded state, the thickness is larger than the gap. Thereby, the seal member 27 protrudes to the outside of the bottom plate 18 in the unloaded state. Thus, when the front plate 19A, the right plate 19B, the left plate 19C and the rear plate 19D are attached, the seal member 27 abuts on the inner surfaces of the front plate 19A, the right plate 19B, the left plate 19C and the rear plate 19D. . The seal member 27 is pressed to the first heat insulating material 25 by the inner surfaces of the front plate 19A, the right plate 19B, the left plate 19C, and the rear plate 19D.
これにより、シール部材２７のはがれ、および、断熱材のずれを防止して、放熱ロスを抑制する。その結果、保温性能を増大させ、省エネルギー性に優れた貯湯タンクユニット１および給湯装置１００を実現する。 Thereby, the peeling of the sealing member 27 and the displacement of the heat insulating material are prevented, and the heat radiation loss is suppressed. As a result, the heat retention performance is increased, and the hot water storage tank unit 1 and the hot water supply apparatus 100 excellent in energy saving performance are realized.
図９は、貯湯タンク４が第１断熱材（真空断熱材）２５と第２断熱材２６とによって覆われた状態を示す斜視図である。貯湯タンク４は、第１断熱材（真空断熱材）２５と第２断熱材（２６Ａ、２６Ｂ、２６Ｃ）とによって周囲を覆われる。第１断熱材２５は、シール部材２７により第２断熱材２６に固定される。シール部材２７は、第１断熱材２５の平面部（２５Ｂ、２５Ｃ）の四辺に配置される。 FIG. 9 is a perspective view showing a state in which the hot water storage tank 4 is covered by the first heat insulating material (vacuum heat insulating material) 25 and the second heat insulating material 26. The hot water storage tank 4 is covered with a first heat insulator (vacuum heat insulator) 25 and a second heat insulator (26A, 26B, 26C). The first heat insulating material 25 is fixed to the second heat insulating material 26 by the seal member 27. The seal members 27 are disposed on the four sides of the flat portion (25 B, 25 C) of the first heat insulating material 25.
平面部（２５Ｂ、２５Ｃ）の前方側の１辺には、前シール部材２７Ａが貼り付けられる。前シール部材２７Ａにより、第１断熱材２５が前断熱材２６Ａに固定される。平面部（２５Ｂ、２５Ｃ）の上方側の１辺には、上シール部材２７Ｂが貼り付けられる。上シール部材２７Ｂにより、第１断熱材２５が、上断熱材２６Ｂに固定される。平面部（２５Ｂ、２５Ｃ）の下方側の１辺には、下シール部材２７Ｃが貼り付けられる。下シール部材２７Ｃにより、第１断熱材２５が、下断熱材２６Ｃに固定される。平面部（２５Ｂ、２５Ｃ）の後方側の１辺には、後シール部材２７Ｄが貼り付けられる。 The front seal member 27A is attached to one side on the front side of the flat portion (25B, 25C). The first heat insulating material 25 is fixed to the front heat insulating material 26A by the front seal member 27A. The upper seal member 27B is attached to one side on the upper side of the flat portion (25B, 25C). The first heat insulating material 25 is fixed to the upper heat insulating material 26B by the upper seal member 27B. The lower seal member 27C is attached to one side on the lower side of the flat portion (25B, 25C). The first heat insulating material 25 is fixed to the lower heat insulating material 26C by the lower seal member 27C. A rear seal member 27D is attached to one side on the rear side of the flat portion (25B, 25C).
シール部材２７を平面部（２５Ｂ、２５Ｃ）の四方を囲うように貼り付けることで、第１断熱材２５と筐体１９との接触を防止する。また、筐体１９によって、シール部材２７を介して第１断熱材２５を強固に押さえつける。これにより、放熱ロスを抑制する。 By sticking the sealing member 27 so as to surround four sides of the flat portion (25 B, 25 C), the contact between the first heat insulating material 25 and the housing 19 is prevented. Further, the first heat insulating material 25 is firmly pressed by the housing 19 via the seal member 27. Thus, the heat radiation loss is suppressed.
ここで、前断熱材２６Ａ、上断熱材２６Ｂ、下断熱材２６Ｃには、平面部（２５Ｂ、２５Ｃ）が当接する凹み部が設けられていることが好ましい。これにより、第１断熱材２５のずれをより確実に防止する。また、平面部（２５Ｂ、２５Ｃ）を第２断熱材２６の凹み部に当接させたとき、シール部材２７が接着される第１断熱材２５と第２断熱材２６との面が、同一平面上に位置することが好ましい。これにより、第１断熱材と第２断熱材とを、強固に接合する。その結果、シール部材２７のはがれを防止して放熱ロスを抑制する。 Here, it is preferable that the front heat insulating material 26A, the upper heat insulating material 26B, and the lower heat insulating material 26C be provided with a recess in which the flat portions (25B, 25C) abut. Thereby, the shift | offset | difference of the 1st heat insulating material 25 is prevented more reliably. Further, when the flat portion (25B, 25C) is brought into contact with the recess of the second heat insulating material 26, the surfaces of the first heat insulating material 25 and the second heat insulating material 26 to which the sealing member 27 is adhered are the same plane. It is preferred to be located at the top. Thereby, the first heat insulating material and the second heat insulating material are firmly joined. As a result, the peeling of the seal member 27 is prevented to suppress the heat radiation loss.
なお、図１０に示すように、シール部材２７を、平面部（２５Ｂ、２５Ｃ）の四方のうち、前側の辺、上側の辺、下側の辺にコの字状に貼り付けてもよい。また、図１１に示すように、シール部材２７を、平面部（２５Ｂ、２５Ｃ）の四辺のうち前側の辺のみに設けてもよい。 As shown in FIG. 10, the sealing member 27 may be attached in a U-shape to the front side, the upper side, and the lower side of the four sides of the plane portion (25B, 25C). Further, as shown in FIG. 11, the seal member 27 may be provided only on the front side of the four sides of the plane portion (25B, 25C).
１ 貯湯タンクユニット
２ 加熱手段（ヒートポンプユニット）
３ 加熱回路
４ 貯湯タンク
５ 断熱材
６ 給水経路（給水管）
７ 減圧弁
８ 加熱循環ポンプ
９ 給湯混合弁
９Ａ 出湯管
１０ 給湯経路
１０Ａ 給湯管
１１ 給湯端末
１２ 圧力逃し弁
１３ ヒートポンプ回路
１４ 圧縮機
１５ 放熱器（水冷媒熱交換器）
１６ 蒸発器（空気熱交換器）
１７ 減圧手段（電磁膨張弁）
１８ 底板
１９ 筐体
１９Ａ 前板
１９Ｂ 右板
１９Ｃ 左板
１９Ｄ 後板
１９Ｅ 上板
２０ 上部材
２１ 胴部材
２２ 下部材
２３ 接続口
２３Ａ 湯流入口
２３Ｂ 湯流出口
２４ 脚部
２５ 第１断熱材（真空断熱材）
２５Ａ 円弧状部
２５Ｂ、２５Ｃ 平面部
２６ 第２断熱材
２６Ａ 前断熱材
２６Ｂ 上断熱材
２６Ｃ 下断熱材
２７ シール部材
１００ 給湯装置
1 Hot water storage tank unit 2 Heating means (heat pump unit)
3 heating circuit 4 hot water storage tank 5 heat insulating material 6 water supply route (water supply pipe)
7 pressure reducing valve 8 heating circulation pump 9 hot water supply mixing valve 9A hot water discharge pipe 10 hot water supply route 10A hot water supply pipe 11 hot water supply terminal 12 pressure relief valve 13 heat pump circuit 14 compressor 15 radiator (water refrigerant heat exchanger)
16 Evaporator (air heat exchanger)
17 Pressure reducing means (electromagnetic expansion valve)
18 bottom plate 19 casing 19A front plate 19B right plate 19C left plate 19D back plate 19E upper plate 20 upper member 20 upper member 21 body member 22 lower member 23 connection port 23A hot water inlet 23B hot water outlet 24 legs 25 first heat insulating material (vacuum Insulation material)
25A Arc-shaped portion 25B, 25C Flat portion 26 Second heat insulating material 26A Front heat insulating material 26B Upper heat insulating material 26C Lower heat insulating material 27 Seal member 100 Water heater
Claims (7)
前記貯湯タンクの外方の少なくとも一部を覆う第１断熱材と、
前記貯湯タンクの外方の少なくとも一部を覆い、前記第１断熱材よりも熱伝導率の大きい発泡スチロールまたは発泡ウレタンである第２断熱材と、
前記貯湯タンク、前記第１断熱材、前記第２断熱材を内部に収容する筐体と、を備え、
前記第１断熱材と前記第２断熱材とを接合するシール部材を設け、
前記シール部材は、一方の面で、前記第１断熱材を前記第２断熱材に固定させるとともに、他方の面は、前記筐体の内表面と当接している構成としたことを特徴とする貯湯タンクユニット。 With a hot water storage tank for storing hot and cold water,
A first heat insulating material covering at least a part of the outer side of the hot water storage tank;
A second heat insulating material which covers at least a part of the outside of the hot water storage tank and which is made of expanded polystyrene or urethane foam having a thermal conductivity larger than that of the first heat insulating material;
The hot water storage tank, the first heat insulating material, and a housing that accommodates the second heat insulating material therein.
A seal member is provided for joining the first heat insulating material and the second heat insulating material,
The sealing member may, at one side, with fixing the first heat insulating material to said second heat insulating material, other surface, and characterized in that a structure that is contact with the inner surface of the housing Hot water storage tank unit.
前記シール部材は、伸縮性を有し、
前記シール部材の無負荷状態における厚みは、前記間隙と同一または前記間隙よりも大きいことを特徴とする請求項１に記載の貯湯タンクユニット。 The first heat insulating material is disposed with a gap between the first heat insulating material and the housing.
The seal member is stretchable,
The hot water storage tank unit according to claim 1, wherein a thickness of the seal member in an unloaded state is equal to or larger than the gap.
前記シール部材が、前記平面部に設けられていることを特徴とする請求項１または２に記載の貯湯タンクユニット。 The first heat insulating material covers an outer peripheral portion of the hot water storage tank in an arc shape while covering at least a part of the outer side of the hot water storage tank, and a flat portion parallel to the inner surface of the housing And
The hot water storage tank unit according to claim 1 or 2, wherein the seal member is provided on the flat portion.
前記シール部材が、前記平面部の外周と前記第２断熱材とを接合するように設けられていることを特徴とする請求項３に記載の貯湯タンクユニット。 The second heat insulating material is provided with a recess in contact with the flat surface of the first heat insulating material,
The hot water storage tank unit according to claim 3, wherein the seal member is provided to join an outer periphery of the flat portion and the second heat insulating material.
前記貯湯タンクに水を供給する給水管と、
前記給水管の途中に設けられた減圧弁と、を備え、
前記減圧弁の設定圧力を０．１８ＭＰＡ以上としたことを特徴とする請求項１から５のいずれか１項に記載の貯湯タンクユニット。 The hot water discharge pipe which makes hot water go out from the hot water storage tank,
A water supply pipe for supplying water to the hot water storage tank;
A pressure reducing valve provided in the middle of the water supply pipe;
The hot water storage tank unit according to any one of claims 1 to 5, wherein a set pressure of the pressure reducing valve is 0.18 MPA or more.
湯水を加熱する加熱手段と、を備えた給湯装置。 A hot water storage tank unit according to any one of claims 1 to 6;
And a heating means for heating hot and cold water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014135621A JP6500207B2 (en) | 2014-07-01 | 2014-07-01 | Hot water storage tank unit and water heater provided with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014135621A JP6500207B2 (en) | 2014-07-01 | 2014-07-01 | Hot water storage tank unit and water heater provided with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2016014485A JP2016014485A (en) | 2016-01-28 |
| JP6500207B2 true JP6500207B2 (en) | 2019-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2014135621A Expired - Fee Related JP6500207B2 (en) | 2014-07-01 | 2014-07-01 | Hot water storage tank unit and water heater provided with the same |
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| JP6979570B2 (en) * | 2017-12-01 | 2021-12-15 | パナソニックＩｐマネジメント株式会社 | Hot water storage type hot water supply device |
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| JP5050744B2 (en) * | 2007-09-10 | 2012-10-17 | パナソニック株式会社 | Hot water storage tank and heat pump water heater using the same |
| JP5029432B2 (en) * | 2008-03-07 | 2012-09-19 | パナソニック株式会社 | Hot water storage tank unit and water heater using the same |
| JP2010117097A (en) * | 2008-11-14 | 2010-05-27 | Hitachi Appliances Inc | Water heater |
| JP5465161B2 (en) * | 2010-11-26 | 2014-04-09 | リンナイ株式会社 | Insulated hot water storage system |
| JP5549630B2 (en) * | 2011-03-30 | 2014-07-16 | 三菱電機株式会社 | Hot water storage tank unit and water heater |
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