JP2009047333A

JP2009047333A - Hot water storage type water heater

Info

Publication number: JP2009047333A
Application number: JP2007212752A
Authority: JP
Inventors: Masanori Ueda; 真典上田; Yasushi Akutsu; 靖阿久津; Takashi Magara; 隆志眞柄; Junpei Hayashi; 純平林
Original assignee: Corona Corp
Current assignee: Corona Corp
Priority date: 2007-08-17
Filing date: 2007-08-17
Publication date: 2009-03-05

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water storage type water heater comprising foam insulation capable of obtaining good heat insulating effect for a long time even when the foam insulation shrinks by aged deterioration. <P>SOLUTION: This hot water storage type water heater comprises a hot water storage tank 7 for storing hot water heated by a heating means 2, an outer case 1 surrounding the hot water storage tank 7, and a heat insulating material disposed in a space between the hot water storage tank 7 and the outer case 1 for heat-retention and heat insulation of the hot water storage tank 1, the heat insulating material is composed of the foam insulation 26 divided into a plurality of pieces, each divided foam insulation is provided with an inserting portion 27 having a thickness thinner than a plate thickness, and having the shape projecting outward at an end portion of the foam insulation 26, and an overhung portion 28 overhung outward at a tip part of the inserting portion 27, and further an end portion of the opposed foam insulation 26 is provided with an insert portion 29 to which the inserting portion 27 is fitted, and a locking hole 30 communicated with the insert portion 29 and engaged with the overhung portion 28, thus the release of hot air is suppressed, and good heat insulating effect can be obtained for a long time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、電気温水器やヒートポンプ式給湯機等の湯水を貯湯する収容タンクを備える貯湯式給湯機に関するものである。 The present invention relates to a hot water storage type water heater provided with a storage tank for storing hot water such as an electric water heater and a heat pump type hot water heater.

従来よりこの種のものでは、貯湯タンクと外装ケースとの間に複数に分割した発泡断熱材を備え、この分割した発泡断熱材同士は、嵌合凹凸で位置決めされ連結されるものであった。（例えば、特許文献１参照）
特許第３５６１２３９号公報 Conventionally, in this type, a foamed heat insulating material divided into a plurality of parts is provided between the hot water storage tank and the exterior case, and the divided foamed heat insulating materials are positioned and connected by fitting unevenness. (For example, see Patent Document 1)
Japanese Patent No. 3561239

ところでこの従来のものでは、分割された発泡断熱材同士の連結は、嵌合凹凸の嵌め込みのみで係合がないので、発泡断熱材が経年変化によって縮んで来ると、発泡断熱材同士の突き合わせ部分に隙間が形成され、この隙間から熱気が放出されて断熱効果が低下し、長期に渡って良好な断熱効果を得ることが出来ないものであった。 By the way, in this conventional thing, since the connection between the divided foam heat insulating materials is only engagement of the fitting unevenness and there is no engagement, when the foam heat insulating material shrinks due to secular change, the abutting portion between the foam heat insulating materials A gap was formed, and hot air was released from the gap to reduce the heat insulation effect, and a good heat insulation effect could not be obtained over a long period of time.

この発明はこの点に着目し上記欠点を解決する為、特にその構成を、加熱手段で加熱された温水を貯湯する貯湯タンクと、該貯湯タンクを包囲する外装ケースと、前記貯湯タンクと外装ケースとの間の空間に前記貯湯タンクの保温、断熱を行う断熱材を備えたものに於いて、前記断熱材は複数に分割された発泡断熱材で形成し、前記分割された発泡断熱材それぞれには、該発泡断熱材の端部に板厚より薄くして外方に突出させた形状とした挿入部と、この挿入部の先端部分には外方に張り出した張り出し部を形成し、更に対向する発泡断熱材の端部には、挿入部が嵌め込まれる挿通部と、該挿通部に連通し張り出し部が係合する係止孔を設けたものである。 This invention pays attention to this point and solves the above-mentioned drawbacks. In particular, the construction thereof includes a hot water storage tank for storing hot water heated by a heating means, an exterior case surrounding the hot water storage tank, and the hot water storage tank and the exterior case. Provided with a heat insulating material for heat insulation and heat insulation of the hot water storage tank, the heat insulating material is formed of a plurality of divided foam heat insulating materials, and each of the divided foam heat insulating materials. Is formed with an insertion part formed in a shape that protrudes outwardly by making it thinner than the plate thickness at the end of the foam heat insulating material, and a protruding part that protrudes outward is formed at the tip part of the insertion part, and further facing An end portion of the foam heat insulating material is provided with an insertion portion into which the insertion portion is fitted, and a locking hole that communicates with the insertion portion and engages with the protruding portion.

この発明によれば、発泡断熱材同士を一方に形成した挿入部を、他方の挿通部に嵌め込み、張り出し部を係止孔に係止することで連結されるので、発泡断熱材自体が経年変化で縮んで、該発泡断熱材同士の間に隙間が形成されたとしても、張り出し部が係止孔に係止され挿入部がこの隙間を閉塞するかたちとなり、熱気の放出を阻止して長期に渡って良好な断熱効果を得ることが出来るものであり、更に張り出し部と係止孔との係止は、お互いの発泡断熱材が引っ張り合う方向に縮むことで、より強固となって確実な断熱が行われることになるものである。 According to the present invention, the foamed heat insulating material itself is secularly changed because the insertion part formed with the foamed heat insulating materials on one side is connected by fitting into the other insertion part and locking the overhanging part to the locking hole. Even if a gap is formed between the foam heat insulating materials, the overhanging portion is locked in the locking hole and the insertion portion closes the gap, preventing the release of hot air for a long time. A good heat insulation effect can be obtained across the wall, and the locking between the overhanging portion and the locking hole is further strengthened and surely insulated by contracting in the direction in which the foamed heat insulating material pulls. Will be done.

次にこの発明の一実施形態を図面に基づいて説明する。
１は貯湯タンクユニットを構成する外装ケース、２はヒートポンプユニットよりなる加熱手段、３は給湯栓、４はリモートコントローラ、５は浴槽、６は電源である。 Next, an embodiment of the present invention will be described with reference to the drawings.
1 is an exterior case constituting a hot water storage tank unit, 2 is a heating means comprising a heat pump unit, 3 is a hot water tap, 4 is a remote controller, 5 is a bathtub, and 6 is a power source.

前記外装ケース１内には、湯水を貯湯する貯湯タンク７と、貯湯タンク７の上部に接続された出湯管８と、貯湯タンク７の下部に接続された給水管９と、出湯管８からの高温水と給水管９から分岐されたバイパス管１０からの低温水とを混合するミキシング弁１１と、ミキシング弁１１の下流に接続された給湯管１２と、給湯管１２に設けられた給湯温度センサ１３と、給湯管１１に設けられた給湯流量センサ１４と、給水管９に設けられた給水温度センサ１５と、給湯管１２から分岐され浴槽５に接続された湯張り管１６と、この湯張り管１６の開閉を行う湯張り弁１７と、湯張り管１６を流れる流量を積算する湯張り流量センサ１８と、出湯管８から分岐して接続された貯湯タンク７の過圧を逃す過圧逃し弁１９と、給水管９に設けられた給水圧を減圧する減圧弁２０と、貯湯タンク７の側面上下方向に複数設けられた貯湯温度センサ２１と、この外装ケース１内の各種機器の制御を行うマイクロコンピュータを主に構成される給湯制御部２２と、貯湯タンク７と加熱手段２とを接続して湯水を循環させるヒーポン往き管２３とヒーポン戻り管２４からなる加熱循環回路２５とを備えて構成されている。 In the exterior case 1, a hot water storage tank 7 for storing hot water, a hot water pipe 8 connected to the upper part of the hot water storage tank 7, a water supply pipe 9 connected to the lower part of the hot water storage tank 7, and the hot water pipe 8 A mixing valve 11 for mixing high-temperature water and low-temperature water from the bypass pipe 10 branched from the water supply pipe 9, a hot water supply pipe 12 connected downstream of the mixing valve 11, and a hot water supply temperature sensor provided in the hot water supply pipe 12 13, a hot water flow rate sensor 14 provided in the hot water supply pipe 11, a hot water temperature sensor 15 provided in the water supply pipe 9, a hot water pipe 16 branched from the hot water pipe 12 and connected to the bathtub 5, and this hot water filling An overpressure relief that releases the overpressure of the hot water storage tank 7 that is branched from the hot water pipe 8 and connected to the hot water flow rate sensor 18 that integrates the flow rate flowing through the hot water pipe 16. Provided in the valve 19 and the water supply pipe 9 A hot water supply control mainly composed of a pressure reducing valve 20 for reducing the water supply pressure, a plurality of hot water storage temperature sensors 21 provided in the vertical direction of the side surface of the hot water storage tank 7, and a microcomputer for controlling various devices in the exterior case 1. The unit 22 is configured to include a heating circulation circuit 25 including a heat pump forward pipe 23 and a heat pump return pipe 24 for circulating hot water by connecting the hot water storage tank 7 and the heating means 2.

２６は貯湯タンク７と外装ケース１との間で、該貯湯タンク７の外郭のほぼ全面を覆い保温・断熱を行う、耐熱性発泡ポリスチレンからなる発泡断熱材で、貯湯タンク７の上部を覆う上部発泡断熱材２６ａと、下部を覆う下部発泡断熱材２６ｂと、貯湯タンク７の胴部で又前後に分かれている胴前発泡断熱材２６ｃと、胴後発泡断熱材２６ｄの４部分に分割されているものである。 Reference numeral 26 denotes a foam heat insulating material made of heat-resistant foamed polystyrene that covers and covers the entire outer surface of the hot water storage tank 7 between the hot water storage tank 7 and the outer case 1. The upper portion covers the upper part of the hot water storage tank 7. It is divided into four parts: a foam heat insulating material 26a, a lower foam heat insulating material 26b that covers the lower part, a front foam heat insulating material 26c that is divided into the front and rear parts of the hot water storage tank 7, and a rear foam heat insulating material 26d. It is what.

２７は胴後発泡断熱材２６ｄの貯湯タンク７を覆って胴前発泡断熱材２６ｃと対向する端部の一方で、高さ方向全幅に渡ってほぼ中央部に形成された挿入部で、この挿入部２７は胴後発泡断熱材２６ｄの板厚より薄く外方に突出し、先端に向かって漸次板厚を厚くしており、そしてその先端部分には、球状に外方に張り出した張り出し部２８が形成されている。 Reference numeral 27 denotes an insertion portion formed at a substantially central portion over the entire width in the height direction, on the other hand, covering the hot water storage tank 7 of the rear cylinder thermal insulation 26d and facing the front cylinder thermal insulation 26c. The portion 27 is thinner than the thickness of the rear foam insulation 26d and protrudes outward, gradually increasing in thickness toward the tip, and a protruding portion 28 projecting outward in a spherical shape is formed at the tip. Is formed.

２９は前記挿入部２７と対向する胴前発泡断熱材２６ｃの一方端部に該挿入部２７を挿入可能に形成された挿通部で、挿入部２７と同一形状に穿かれ該挿入部２７が嵌め込まれると共に、この挿通部２９に連通した奥側には張り出し部２８を収納して係止する係止孔３０が形成されている。 Reference numeral 29 denotes an insertion part formed so that the insertion part 27 can be inserted into one end part of the front foam insulation material 26c facing the insertion part 27. The insertion part 27 is formed in the same shape as the insertion part 27 and is inserted into the insertion part 27. In addition, a locking hole 30 that houses and locks the overhanging portion 28 is formed on the back side communicating with the insertion portion 29.

又挿入部２７を突出させた残りの端部は、貯湯タンク７側の内側を突出させ凸端３１とし、外装ケース１側の外側を引っ込めて凹端３２として連結部分に段差を付けるようにしているもので、この端部と接する挿通部２９を形成した残りの端部は、内側で凸端３１と対向する部分を短い短端３３とし、外側で凹端３２と対向する部分を逆に長くして長端３４とするものである。 Further, the remaining end portion from which the insertion portion 27 is protruded protrudes from the inner side of the hot water storage tank 7 to become a convex end 31, and the outer side of the outer case 1 side is retracted to form a concave end 32 so that a step is formed in the connecting portion. The remaining end portion that forms the insertion portion 29 in contact with this end portion has a portion that faces the convex end 31 on the inside as a short short end 33 and a portion that faces the concave end 32 on the outside on the contrary. Thus, the long end 34 is obtained.

更に胴後発泡断熱材２６ｄの反対側端部には、一方と同じように挿入部２７と張り出し部２８を備えても良いし、逆に反対側には挿通部２９と係止孔３０を備えるようにしても良いものである。更に上部発泡断熱材２６ａ及び下部発泡断熱材２６ｂと、胴前発泡断熱材２６ｃ及び胴後発泡断熱材２６ｄとの連結も、どちらかに挿入部２７と張り出し部２８を備え、反対側には挿通部２９と係止孔３０を備えることで行われるものである。 Further, an insertion portion 27 and an overhanging portion 28 may be provided at the opposite end of the body rear foam heat insulating material 26d in the same manner as one, and conversely, an insertion portion 29 and a locking hole 30 are provided on the opposite side. It may be good. Further, the upper foam heat insulating material 26a and the lower foam heat insulating material 26b, and the front and rear foam heat insulating materials 26c and 26d are connected to each other with an insertion portion 27 and an overhanging portion 28, and inserted on the opposite side. This is performed by providing the portion 29 and the locking hole 30.

そしてこの分割された発泡断熱材２６同士の連結は、貯湯タンク７の胴部外周を覆うように胴前発泡断熱材２６ｃと、胴後発泡断熱材２６ｄを位置させ密着するように接近させ、挿通部２９をやや広げるようにして挿入部２７を通し、先端の張り出し部２８を係止孔３０に嵌め込むことで、挿通部２９も元の大きさに戻り挿入部２７が嵌り込んだ状態となって、発泡断熱材２６同士が強固に連結され、発泡断熱材２６は貯湯タンク７に密着した状態でガタツキやズレの心配がなく、又発泡断熱材２６は経年変化で縮むが、縮めば縮む程張り出し部２８と係止孔３０との係止が強固となる方向となり、確実な連結が得られるものであり、しかも縮むことにより発泡断熱材２６間にどうしても隙間が発生するが、この隙間は係止が強固となった挿入部２７で途中遮断されるので、熱が発泡断熱材２６外に放出されることがなく、長期に渡って良好な断熱効果を得ることが出来るものである。 The divided foam heat insulating materials 26 are connected to each other so that the front foam heat insulating material 26c and the rear foam heat insulating material 26d are positioned so as to be in close contact with each other so as to cover the outer periphery of the hot water storage tank 7. The insertion portion 27 is passed through the insertion portion 27 so that the portion 29 is slightly widened, and the protruding portion 28 at the tip is fitted into the locking hole 30, so that the insertion portion 29 returns to its original size and the insertion portion 27 is fitted. The foam heat insulating material 26 is firmly connected to each other, and the foam heat insulating material 26 is in close contact with the hot water storage tank 7 so that there is no wobble or misalignment, and the foam heat insulating material 26 shrinks due to secular change. The locking between the overhanging portion 28 and the locking hole 30 becomes stronger, and a reliable connection can be obtained. Moreover, the shrinkage causes a gap between the foamed heat insulating materials 26, but this gap is not related. Inserts that have become solid Due to being blocked middle section 27, without heat is released to the outside foam insulation 26, in which it is possible to obtain a good thermal insulation effect for a long period.

更に経年変化で隙間が発生する連結部分には内外で段差が形成されているので、隙間と対向する発泡断熱材２６の板厚が十分に確保出来、外側の隙間と対向するのは挿入部２７と短端３３の厚さ分であり、内側の隙間とは挿入部２７に長端３４の厚さを加えたものが対向するので、発泡断熱材２６自体の強度も十分維持出来ると共に、断熱効果の低下も抑制することができるものである。
又挿入部２７は外方に向かった漸次大きくなっており、これを嵌合する挿通部２９も同形状で外に向かって細くなるテーパー状であるので、嵌り込んで抜け難くなり、縮みもあって更に抜けにくくなり、連結が強固になるものである。 Further, since a step is formed inside and outside at the connecting portion where a gap is generated due to secular change, a sufficient thickness of the foam heat insulating material 26 facing the gap can be secured, and the insertion portion 27 faces the outside gap. And the inner gap between the insertion portion 27 and the thickness of the long end 34 are opposed to each other, so that the strength of the foam heat insulating material 26 itself can be sufficiently maintained and the heat insulating effect can be obtained. It is also possible to suppress the decrease of.
Further, the insertion portion 27 gradually increases toward the outside, and the insertion portion 29 for fitting the insertion portion 27 has the same shape and has a taper shape that becomes narrower toward the outside. This makes it more difficult to pull out and strengthens the connection.

前記加熱手段２は、二酸化炭素冷媒を圧縮するコンプレッサー３５と、凝縮器としての冷媒−水熱交換器３６と、減圧器３７と、蒸発器としての空気熱交換器３８よりなるヒートポンプ回路３９と、空気熱交換器３８に送風する送風機４０と、加熱循環回路２５途中に設けられた能力可変の循環ポンプ４１と、加熱循環回路２５の冷媒−水熱交換器３６入口側に設けられ、冷媒−水熱交換器３６に流入する湯水の温度を検出する熱交入口温度センサ４２と、加熱循環回路２５の冷媒−水熱交換器３６出口側に設けられ、冷媒−水熱交換器３６から流出する湯水の温度を検出する熱交出口温度センサ４３と、この加熱手段２の制御を行うマイクロコンピュータを主に構成される加熱制御部４４とを備えて構成されている。 The heating means 2 includes a compressor 35 that compresses carbon dioxide refrigerant, a refrigerant-water heat exchanger 36 as a condenser, a decompressor 37, and a heat pump circuit 39 including an air heat exchanger 38 as an evaporator, A blower 40 for blowing air to the air heat exchanger 38, a variable capacity circulation pump 41 provided in the middle of the heating circulation circuit 25, a refrigerant-water heat exchanger 36 inlet side of the heating circulation circuit 25, and a refrigerant-water A hot water inlet temperature sensor 42 for detecting the temperature of hot water flowing into the heat exchanger 36 and hot water flowing out of the refrigerant-water heat exchanger 36 are provided on the outlet side of the refrigerant-water heat exchanger 36 of the heating circuit 25. The heat exchange outlet temperature sensor 43 for detecting the temperature of the heating means and a heating control unit 44 mainly composed of a microcomputer for controlling the heating means 2 are configured.

ここで、前記電源６は時間帯別電灯であり、夜間（ここでは２３時から翌７時まで）が割安な電力料金設定となっているもので、この割安な夜間電力を用いて夜間に一日に必要な貯湯熱量を沸かし上げて使用するものであり、また、この時間帯別電灯では昼間（７時から２３時まで）にも電力は供給され、残湯量が少なくなったときに追加の沸き増しが行われるものである。なお、前記電源６は給湯制御部２２に接続され、この給湯制御部２２からリモートコントローラ４および加熱制御部４４に有線にて通信信号が重畳されて電力供給されるものである。 Here, the power source 6 is an electric lamp according to the time zone, and is set at a low price for power charges at night (from 23:00 to 7:00 here). The amount of stored hot water needed for the day is boiled and used, and the electric light is also supplied in the daytime (from 7 o'clock to 23 o'clock). Boiling is performed. The power source 6 is connected to the hot water supply control unit 22, and power is supplied from the hot water supply control unit 22 to the remote controller 4 and the heating control unit 44 by superimposing communication signals in a wired manner.

そして、夜間時間帯になると前記給湯制御部２２が翌日に必要な貯湯熱量を演算し、この目標となる貯湯熱量を夜間時間帯の終了時までに沸き上げるよう加熱制御部４４に指示してヒートポンプ回路３９を作動させ、加熱循環回路２５の循環ポンプ４１を駆動開始する。そして、循環ポンプ４１の駆動により貯湯タンク７下部から取り出された湯水がヒーポン往き管２３を通り加熱手段２の冷媒−水熱交換器３６に流入して加熱され、ヒーポン戻り管２４を介して貯湯タンク７の上部に戻されることにより高温の湯が貯湯される。
又このヒーポン往き管２３については、発泡断熱材２６による断熱からは外れており、加熱手段２へ供給される水の温度をわざと上げないことで、ＣＯＰを向上させるようにしているものである。 When the night time zone is reached, the hot water supply control unit 22 calculates the amount of hot water storage necessary for the next day, and instructs the heating control unit 44 to boil up the target hot water storage amount by the end of the night time zone. The circuit 39 is activated to start driving the circulation pump 41 of the heating circulation circuit 25. Then, the hot water taken out from the lower part of the hot water storage tank 7 by driving the circulation pump 41 flows into the refrigerant-water heat exchanger 36 of the heating means 2 through the heat pump forward pipe 23, is heated, and is stored via the heat pump return pipe 24. By returning to the upper part of the tank 7, hot water is stored.
Further, the heat-pump pipe 23 is not insulated from the foam heat insulating material 26, and COP is improved by not intentionally raising the temperature of the water supplied to the heating means 2.

更に貯湯タンク７の側面に設けられた貯湯温度センサ２１が所定の量の高温水が貯湯されたことを検出するか、または、熱交入口温度センサ４２が所定温度以上を検出すると、給湯制御部２２が加熱制御部４４へ加熱動作の停止を指令し、ヒートポンプ回路３９と循環ポンプ４１の作動が停止され、夜間時間帯の終了時までに貯湯動作を終了するものである。 Further, when a hot water storage temperature sensor 21 provided on the side surface of the hot water storage tank 7 detects that a predetermined amount of hot water has been stored, or when the heat exchange inlet temperature sensor 42 detects a predetermined temperature or higher, a hot water supply control unit 22 instructs the heating control unit 44 to stop the heating operation, the operation of the heat pump circuit 39 and the circulation pump 41 is stopped, and the hot water storage operation is completed by the end of the night time zone.

なお、ここで貯湯タンク７内に貯湯される熱量は給湯制御部２２により、過去数日分の給湯負荷から適切と思われる熱量を目標貯湯熱量として算出されるもので、貯湯される湯水の温度は季節（または給水温度センサ１５で検出する給水温度）および目標貯湯熱量の大小によって６０℃〜９０℃の範囲で変動するものである。 Here, the amount of heat stored in the hot water storage tank 7 is calculated by the hot water supply control unit 22 as a target amount of heat stored in the hot water supply load for the past several days. Varies in the range of 60 ° C. to 90 ° C. depending on the season (or the feed water temperature detected by the feed water temperature sensor 15) and the amount of target hot water stored.

前記リモートコントローラ４には給湯設定温度を設定する温度設定スイッチ４５、浴槽５への湯張りを指示する湯張りスイッチ４６、湯張り量を設定する湯張り量設定スイッチ４７、及び給湯可能な残時間を表示させる残時間表示スイッチ４８とを有した操作部４９と、ドットマトリクス型の蛍光表示管よりなる表示部５０と、これら操作部４９及び表示部５０を制御すると共に、前記給湯制御部２２と通信を行うマイクロコンピュータを主に構成されたリモコン制御部５１を備えており、通常運転時は前記表示部５０に操作部４９で設定された給湯設定温度や時刻情報および貯湯温度センサ２１で検知する残り貯湯量等が表示されるものである。なお、前記表示部５０はドットマトリクス型の液晶表示部としても良い。 The remote controller 4 has a temperature setting switch 45 for setting a hot water supply set temperature, a hot water filling switch 46 for instructing hot water filling to the bathtub 5, a hot water filling amount setting switch 47 for setting the hot water filling amount, and a remaining time for hot water supply. An operation unit 49 having a remaining time display switch 48 for displaying the display, a display unit 50 made of a dot matrix type fluorescent display tube, the operation unit 49 and the display unit 50, and the hot water supply control unit 22 A remote control unit 51 mainly composed of a microcomputer that performs communication is provided. During normal operation, the display unit 50 detects the hot water supply set temperature and time information set by the operation unit 49 and the hot water storage temperature sensor 21. The remaining hot water storage amount is displayed. The display unit 50 may be a dot matrix type liquid crystal display unit.

次に給湯栓３を開くと、給水管９からの給水圧により貯湯タンク７上部の高温水が出湯管８に押し出され、給湯制御部２２により制御されるミキシング弁１１にて、バイパス管１０の低温水と給湯温度センサ１３の検出する温度が、前記リモートコントローラ４の操作部４９で設定された給湯設定温度になるように混合されて、給湯管１２を介して給湯されるものである。 Next, when the hot-water tap 3 is opened, the hot water in the upper part of the hot water storage tank 7 is pushed out to the hot water discharge pipe 8 by the water supply pressure from the water supply pipe 9, and the mixing pipe 11 controlled by the hot water supply control unit 22 The temperature detected by the low-temperature water and the hot water supply temperature sensor 13 is mixed so as to be the hot water supply set temperature set by the operation unit 49 of the remote controller 4, and hot water is supplied through the hot water supply pipe 12.

もしも給湯量が通常よりも多くなってしまい、昼間電力時間帯にて貯湯温度センサ２１で検出する残り貯湯量が少なくなったことを給湯制御部２２が検知し、貯湯タンク７内に貯湯された湯の湯切れが予想される場合は、その時点にて昼間電力を利用して必要な熱量の沸き増しが行われるものである。 If the amount of hot water supply becomes larger than usual, the hot water supply control unit 22 detects that the remaining hot water storage amount detected by the hot water storage temperature sensor 21 is reduced during the daytime power hours, and the hot water is stored in the hot water storage tank 7. When the hot water is expected to run out, the necessary amount of heat is increased using the daytime power at that time.

次に浴槽５に湯張りを行う際は、リモートコントローラ４の湯張りスイッチ４６が操作されると、給湯制御部２２が湯張り弁１７を開いて湯張りを開始し、湯張りを開始してからの積算流量が湯張り量に達したことを検出すると湯張り弁１７を閉じて湯張りを完了するものである。 Next, when filling the bathtub 5, when the filling switch 46 of the remote controller 4 is operated, the hot water supply control unit 22 opens the filling valve 17 to start filling, and starts filling. When it is detected that the integrated flow rate from has reached the amount of hot water filling, the hot water filling valve 17 is closed to complete the hot water filling.

なお、この発泡断熱材２６の一実施形態では、挿入部２７と反対側の挿通部２９とは発泡断熱材２６の高さ方向に渡って形成したが、これに限定されることなく、例えば複数に分断して形成するようにしても良く、ただこの間に発生する連結部分の隙間からは貯湯タンク７からの熱気が放熱されるので、出来るだけこの間隔を狭くすることが望ましい。 In the embodiment of the foam heat insulating material 26, the insertion portion 27 and the insertion portion 29 opposite to the insertion portion 27 are formed in the height direction of the foam heat insulating material 26. However, the present invention is not limited to this. However, since the hot air from the hot water storage tank 7 is radiated from the gap between the connecting portions generated during this period, it is desirable to make this interval as narrow as possible.

次に発泡断熱材の連結を図に示す他の実施形態について説明する。
前記実施形態と同一部分は同一符号とし相違する部分のみを説明すると、挿入部２７の先端部分の張り出し部５２を２本のリング状の張り出させて形成し、この張り出し部５２が係止する係止部５３も挿通部２９の奥に２本のリング状の窪みとして形成したもので、張り出し部５２が係止部５３に嵌り込むことで係止され、発泡断熱材２６同士を連結するようにしたものである。 Next, description will be given of another embodiment in which the connection of the foam heat insulating material is shown in the drawing.
The same parts as those of the above embodiment are denoted by the same reference numerals, and only the different parts will be described. The projecting part 52 at the distal end of the insertion part 27 is formed by projecting two ring-shaped parts, and the projecting part 52 is locked. The locking part 53 is also formed as two ring-shaped depressions at the back of the insertion part 29. The protruding part 52 is locked by fitting into the locking part 53, so that the foam heat insulating materials 26 are connected to each other. It is a thing.

更に貯湯タンク７に取り付けられた貯湯温度センサ２１の点検及び取り替えのための部分的な発泡断熱材２６の連結について図で説明すれば、貯湯タンク７を覆う発泡断熱材２６に開口部５４を形成し、この開口部５４を形成する両側を外方へ突出させて挿入部５５、５６とし、この両挿入部５５、５６の先端部を外に巻回するようにやや張り出して張り出し部５７、５８を形成するもので、そしてこの開口部５４に嵌り込む部分発泡断熱材５９には、両挿入部５５、５６が嵌り込む挿通部６０、６１が形成され、しかもこの挿通部６０、６１の端部には張り出し部５７、５８が係止するカギ形の係止孔６２、６３が設けられ、部分発泡断熱材５９は両挿入部５５、５６を、挿通部６０、６１に挿入し張り出し部５７、５８と係止孔６２、６３の係止により連結されるものであり、張り出し部５７、５８と係止孔６２、６３の係止は、発泡断熱材の経年変化による縮みでより強固に係止されるものである。 Further, the connection of the partial foam insulation 26 for inspection and replacement of the hot water storage temperature sensor 21 attached to the hot water storage tank 7 will be described with reference to the drawings. An opening 54 is formed in the foam insulation 26 covering the hot water storage tank 7. Then, both sides forming the opening 54 are protruded outward to form insertion portions 55 and 56, and the protruding portions 57 and 58 are slightly overhanged so as to wind the distal ends of the insertion portions 55 and 56 outward. In the partially foamed heat insulating material 59 fitted into the opening 54, there are formed insertion portions 60, 61 into which the insertion portions 55, 56 are fitted, and the end portions of the insertion portions 60, 61 are formed. Are provided with key-shaped locking holes 62 and 63 for locking the overhang portions 57 and 58, and the partially foamed heat insulating material 59 inserts both insertion portions 55 and 56 into the insertion portions 60 and 61. 58 and the locking hole 62, It is intended to be connected by the third locking, engagement of the projecting portions 57 and 58 and the locking hole 62 and 63 are intended to be sealed more firmly engaged in contraction due to aging of the foam insulation.

この発明の一実施形態の貯湯式給湯機の概略構成図。BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram of the hot water storage type water heater of one Embodiment of this invention. 同貯湯タンクユニットの縦断面図。The longitudinal cross-sectional view of the hot water storage tank unit. 同貯湯タンクユニットの横断面図。The cross-sectional view of the hot water storage tank unit. 同要部発泡断熱材の連結部分の断面図。Sectional drawing of the connection part of the principal part foaming heat insulating material. 他の実施形態を示す発泡断熱材の連結部分の断面図。Sectional drawing of the connection part of the foam heat insulating material which shows other embodiment. 部分発泡断熱材の連結部分の断面図。Sectional drawing of the connection part of a partial foaming heat insulating material.

符号の説明Explanation of symbols

１外装ケース
２加熱手段
７貯湯タンク
２６発泡断熱材
２７挿入部
２８張り出し部
２９挿通部
３０係止孔 DESCRIPTION OF SYMBOLS 1 Exterior case 2 Heating means 7 Hot water storage tank 26 Foam heat insulating material 27 Insertion part 28 Overhang | projection part 29 Insertion part 30 Locking hole

Claims

加熱手段で加熱された温水を貯湯する貯湯タンクと、該貯湯タンクを包囲する外装ケースと、前記貯湯タンクと外装ケースとの間の空間に前記貯湯タンクの保温、断熱を行う断熱材を備えたものに於いて、前記断熱材は複数に分割された発泡断熱材で形成し、前記分割された発泡断熱材それぞれには、該発泡断熱材の端部に板厚より薄くして外方に突出させた形状とした挿入部と、この挿入部の先端部分には外方に張り出した張り出し部を形成し、更に対向する発泡断熱材の端部には、挿入部が嵌め込まれる挿通部と、該挿通部に連通し張り出し部が係合する係止孔を設けた事を特徴とする貯湯式給湯機。 A hot water storage tank for storing hot water heated by the heating means, an outer case surrounding the hot water storage tank, and a space between the hot water storage tank and the outer case provided with a heat insulating material for heat insulation and heat insulation of the hot water storage tank. Preferably, the heat insulating material is formed of a plurality of divided foam heat insulating materials, and each of the divided foam heat insulating materials protrudes outward by being thinner than a plate thickness at an end of the foam heat insulating material. An insertion portion having a shape that is formed, and a protruding portion that protrudes outward is formed at the distal end portion of the insertion portion, and an insertion portion into which the insertion portion is fitted is formed at the end portion of the opposed foam heat insulating material, A hot water storage type hot-water supply machine characterized in that a locking hole that communicates with the insertion part and engages with an overhanging part is provided.