JP2005164236A

JP2005164236A - Hot-water supply unit

Info

Publication number: JP2005164236A
Application number: JP2005019433A
Authority: JP
Inventors: Masamitsu Kondo; 正満近藤; Hideo Tomita; 英夫富田; Yoshitsugu Nishiyama; 吉継西山; Hiroaki Yonekubo; 寛明米久保; Shigeki Uno; 茂岐宇野
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2005-01-27
Filing date: 2005-01-27
Publication date: 2005-06-23

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein a hot-water supply compound unit such as a hot-water supply heating bath unit gets large, and problems as to hot-water temperature control performance and a running cost in heating and additional heating for a bath, in a combustion device. <P>SOLUTION: A pressure-proof pump 20 is provided as a conveying means in the first circulation circuit 19 for circulating hot-water, the first double-tube heat-exchanger 23 is provided as a forced convection type heat exchanger for the heating, in an upstream, and the second double-tube heat-exchanger 24 is provided as a forced convection type heat exchanger for the additional heating for the bath, in a downstream. Resultingly, the pressure-proof pump 20 is compactified, the first and second double-tube heat-exchangers 23, 24 are size-reduced because a route of the first circulation circuit 19 is shortened, and the unit is able to be remarkably size-reduced thereby. A heat loss is restrained when circulating the hot-water of a high temperature, and the low running cost is realized thereby as an effect thereof. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、暖房および風呂の追い焚き機能を有する装置に関するものである。 The present invention relates to a device having heating and bathing functions.

従来の給湯装置は、次に記載されているようなものがあった（例えば、特許文献１参照）。 Some conventional hot water supply apparatuses are described below (for example, see Patent Document 1).

図９に示すこの種の給湯装置では、給湯を行う際に即湯機能を実現する構成において、暖房および風呂の追い焚きを行うものである。 In this type of hot water supply apparatus shown in FIG. 9, heating and reheating of the bath are performed in a configuration that realizes an immediate hot water function when hot water is supplied.

すなわち、図９に示すように熱交換器１と、出湯管２と、出湯管２の先端のミキシングバルブ３と、ミキシングバルブ３の直前に設けた戻り管４と、熱交換器１の出口に設けたバイパス管５と、バイパス管５と給水管６との間に設けた間接熱交換器７と、間接熱交換器７に設けた風呂追い焚き回路８と暖房回路９と、給水管６とバイパス管５および給水管６と戻り管４とで循環回路１０を形成し、循環回路１０に設けた循環ポンプ１１で構成されている。 That is, as shown in FIG. 9, the heat exchanger 1, the tapping pipe 2, the mixing valve 3 at the tip of the tapping pipe 2, the return pipe 4 provided immediately before the mixing valve 3, and the outlet of the heat exchanger 1 A bypass pipe 5 provided, an indirect heat exchanger 7 provided between the bypass pipe 5 and the water supply pipe 6, a bath reheating circuit 8, a heating circuit 9 and a water supply pipe 6 provided in the indirect heat exchanger 7. The bypass pipe 5, the water supply pipe 6, and the return pipe 4 form a circulation circuit 10, and includes a circulation pump 11 provided in the circulation circuit 10.

そして上記構成により、給湯を行わない時には熱交換器１で高温に加熱された湯を戻り管４を介して循環ポンプ１１で循環させ即湯できるようになっている。さらに、バイパス管５に湯を流すことで一つの間接熱交換器７で風呂追い焚き回路８を介して風呂の追い焚きをし、暖房回路９を介して暖房するようになっていた。
実公平７−１４７５８号公報 With the above configuration, when hot water is not supplied, hot water heated to a high temperature by the heat exchanger 1 is circulated by the circulation pump 11 via the return pipe 4 so that the hot water can be immediately supplied. Furthermore, by flowing hot water through the bypass pipe 5, the single indirect heat exchanger 7 reheats the bath via the bath reheating circuit 8 and heats it via the heating circuit 9.
No. 7-14758

しかしながら上記従来の給湯装置では、即湯システムを利用しているため高温の温水を屋内のミキシングバルブ３に至る直前まで循環させねばならないためランニングコストが高くつき、高温の湯とするために必ずミキシングバルブ３を設けねばならないという課題があった。さらに間接熱交換器７が一つであり、コイルシェル式の液貯湯式の水−水熱交換器で、流路は互いに平行流となるため、熱交換効率が低くお湯を一旦シェルに溜めねばならないため大型で重い熱交換器が必要となるとともに、暖房に必要な高温の温水温度と風呂追い焚きに必要な温水温度を制御することが困難となる課題がある。 However, since the above-described conventional hot water supply system uses an immediate hot water system, high-temperature hot water must be circulated until just before reaching the indoor mixing valve 3, so that the running cost is high and mixing is always necessary to obtain high-temperature hot water. There was a problem that the valve 3 had to be provided. Furthermore, there is only one indirect heat exchanger 7, which is a coil shell type liquid hot water type water-water heat exchanger. Since the flow paths are parallel to each other, the heat exchange efficiency is low and hot water must be once stored in the shell. Therefore, a large and heavy heat exchanger is required, and there is a problem that it is difficult to control the hot water temperature required for heating and the hot water temperature required for bathing.

本発明は上記課題を解決するために、給湯装置のケーシング内に、バーナと、前記バーナで加熱される熱交換器と、前記熱交換器の入口に設けた給水管と、出口に設けた給湯管と、前記出口から分岐し前記入口との間で閉回路を形成する第一の循環回路と、前記第一の循環回路中の温水を循環させる搬送手段と、前記第一の循環回路の温水を利用して複数の負荷装置に熱量を供給する強制対流型熱交換器とを備え、前記強制対流型熱交換器は、負荷装置である暖房装置との間で第二の循環回路を形成し第二循環回路用循環ポンプにより温水を循環して熱交換を行う第一の強制対流型熱交換器と、負荷装置である風呂装置との間で第三の循環回路を形成し第三循環回路用循環ポンプにより温水を循環して熱交換を行う第二の強制対流型熱交換器とで構成し、前記第一の強制対流型熱交換器または第二の強制対流型熱交換器の何れか一方の熱交換器をプレート式熱交換器とし、他方を二重管熱交換器としたものである。 In order to solve the above-mentioned problems, the present invention provides a burner, a heat exchanger heated by the burner, a water supply pipe provided at the inlet of the heat exchanger, and a hot water supply provided at the outlet in the casing of the hot water supply device. A first circulation circuit which branches from the outlet and forms a closed circuit between the outlet, a conveying means for circulating hot water in the first circulation circuit, and hot water in the first circulation circuit And a forced convection heat exchanger that supplies heat to a plurality of load devices, and the forced convection heat exchanger forms a second circulation circuit with the heating device that is the load device. A third circulation circuit is formed by forming a third circulation circuit between the first forced convection heat exchanger that performs heat exchange by circulating hot water with the circulation pump for the second circulation circuit and the bath device that is the load device. Second forced convection heat exchanger that exchanges heat by circulating hot water using a circulating pump The heat exchanger of either the first forced convection heat exchanger or the second forced convection heat exchanger is a plate heat exchanger, and the other is a double tube heat exchanger. Is.

上記発明によれば、第二及び第三の循環回路にプレート式熱交換器と二重管熱交換器を設け複数の負荷装置を運転することで給湯機能と暖房機能もしくは風呂機能等を有する小型の給湯複合機を提供できると共に、プレート式熱交換器と二重管熱交換器を各機能別に設けた構成とすることで用途に応じて適切な熱量供給が可能となり、効果的な運転制御が実現できる。 According to the above invention, the second and third circulation circuits are provided with plate heat exchangers and double pipe heat exchangers, and a plurality of load devices are operated to provide a small hot water supply function and a heating function or a bath function. In addition, a plate-type heat exchanger and a double-pipe heat exchanger can be provided for each function, so that an appropriate amount of heat can be supplied according to the application and effective operation control can be achieved. realizable.

本発明の給湯装置は、給湯機能と暖房機能もしくは風呂機能等の複数の機能を有する小型の給湯複合機を提供できると共に、用途に応じた適切な熱量供給が可能となり、効果的な運転制御が実現できる。 The hot water supply apparatus of the present invention can provide a small hot water supply complex machine having a plurality of functions such as a hot water supply function and a heating function or a bath function, and can also supply an appropriate amount of heat according to the application, thereby enabling effective operation control. realizable.

本発明の第１の実施の形態による給湯装置は、給湯装置のケーシング内に、バーナと、前記バーナで加熱される熱交換器と、前記熱交換器の入口に設けた給水管と、出口に設けた給湯管と、前記出口から分岐し前記入口との間で閉回路を形成する第一の循環回路と、前記第一の循環回路中の温水を循環させる搬送手段と、前記第一の循環回路の温水を利用して複数の負荷装置に熱量を供給する強制対流型熱交換器とを備え、前記強制対流型熱交換器は、負荷装置である暖房装置との間で第二の循環回路を形成し第二循環回路用循環ポンプにより温水を循環して熱交換を行う第一の強制対流型熱交換器と、負荷装置である風呂装置との間で第三の循環回路を形成し第三循環回路用循環ポンプにより温水を循環して熱交換を行う第二の強制対流型熱交換器とで構成し、前記第一の強制対流型熱交換器または第二の強制対流型熱交換器の何れか一方の熱交換器をプレート式熱交換器とし、他方を二重管熱交換器としたことを特徴とするものである。 A hot water supply apparatus according to a first embodiment of the present invention includes a burner, a heat exchanger heated by the burner, a water supply pipe provided at an inlet of the heat exchanger, and an outlet in a casing of the hot water supply apparatus. A provided hot water supply pipe, a first circulation circuit which branches from the outlet and forms a closed circuit, a conveying means for circulating hot water in the first circulation circuit, and the first circulation A forced convection heat exchanger that supplies heat to a plurality of load devices using hot water of the circuit, and the forced convection heat exchanger is a second circulation circuit between the heating device and the load device A third circulation circuit is formed between the first forced convection heat exchanger that circulates hot water by the circulation pump for the second circulation circuit and performs heat exchange and the bath device that is the load device. The second forced convection type that performs heat exchange by circulating hot water with a circulation pump for three circulation circuits A heat exchanger, either the first forced convection heat exchanger or the second forced convection heat exchanger is a plate heat exchanger, and the other is a double tube heat exchange It is characterized by being a vessel.

そして、第二及び第三の循環回路にプレート式熱交換器と二重管熱交換器を設け複数の負荷装置を運転することで給湯機能と暖房機能もしくは風呂機能等を有する小型の給湯複合機を提供できると共に、プレート式熱交換器と二重管熱交換器を各機能別に設けた構成とすることで用途に応じて適切な熱量供給が可能となり、効果的な運転制御が実現できる。 A small hot water supply complex having a hot water supply function and a heating function or a bath function by operating a plurality of load devices by providing a plate heat exchanger and a double pipe heat exchanger in the second and third circulation circuits. In addition, by providing a plate heat exchanger and a double-pipe heat exchanger for each function, it is possible to supply an appropriate amount of heat according to the application, thereby realizing effective operation control.

以下、本発明の実施の形態について図面を用いて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施の形態１）
図１は本発明の実施の形態１における燃焼装置を示す構成図である。図１、図２において、１２は本体のケーシングであり、１３はバーナでバーナ１３における燃焼により発生する排熱を受熱する熱交換器１４と、熱交換器１４の入口１５に設けた給水管１６と出口１７に設けた給湯管１８と、入口１５と出口１７に閉回路をケーシング１２の内部に形成する第一の循環回路１９と、第一の循環回路１９の中に設けた温水を循環させる搬送手段である耐圧ポンプ２０と耐圧ポンプ２０と入口１５の間に設けた水の逆流を防止する第一の逆止弁２１と耐圧ポンプ２０の上流側に設けた配管内の圧力がある一定値を越えると圧力を逃がす圧力逃がし弁２２と第一の強制対流型熱交換器である第一の二重管熱交換器２３と第二の強制対流型熱交換器である第二の二重管熱交換器２４と、第一の二重管熱交換器２３と負荷装置の一つである暖房装置２５との間に設けた第二の循環回路２６と、第二の循環回路２６中に設けた温水を循環させる第二循環回路用循環ポンプ２７と膨張タンク２８と、第二の二重管熱交換器２４と負荷装置の一つである浴槽２９との間に設けた第三の循環回路３０と、第三の循環回路３０中に設けた浴槽水を循環させる第三循環回路用循環ポンプ３１とからなる。 (Embodiment 1)
FIG. 1 is a configuration diagram showing a combustion apparatus according to Embodiment 1 of the present invention. 1 and 2, reference numeral 12 denotes a casing of the main body, reference numeral 13 denotes a burner, a heat exchanger 14 that receives exhaust heat generated by combustion in the burner 13, and a water supply pipe 16 provided at an inlet 15 of the heat exchanger 14. And a hot water pipe 18 provided at the outlet 17, a first circulation circuit 19 that forms a closed circuit inside the casing 12 at the inlet 15 and the outlet 17, and hot water provided in the first circulation circuit 19 are circulated. The pressure in the piping provided on the upstream side of the first check valve 21 and the pressure pump 20 that prevents the back flow of water provided between the pressure pump 20 that is the conveying means, the pressure pump 20 and the inlet 15 is a certain value. The pressure relief valve 22 that releases the pressure when the pressure exceeds the first double-tube heat exchanger 23 that is the first forced convection heat exchanger and the second double tube that is the second forced convection heat exchanger Heat exchanger 24, first double tube heat exchanger 23 and negative A second circulation circuit 26 provided between a heating device 25 which is one of the devices, a second circulation circuit circulation pump 27 for circulating hot water provided in the second circulation circuit 26, and an expansion tank 28. The third circulation circuit 30 provided between the second double-tube heat exchanger 24 and the bathtub 29 which is one of the load devices, and the bathtub water provided in the third circulation circuit 30 are circulated. And a third circulation circuit circulation pump 31.

次に動作、作用について説明すると、まず、給湯栓３２を開栓すると水は給水管１６を通り入口１５から熱交換器１４に入りバーナ１３の燃焼熱により加温され出口１７と給湯管１８を通り給湯栓３２から出湯する。 Next, the operation and action will be described. First, when the hot water tap 32 is opened, the water passes through the water supply pipe 16 and enters the heat exchanger 14 through the inlet 15 and is heated by the combustion heat of the burner 13. The hot water is discharged from the street hot water tap 32.

次に暖房運転時には、暖房装置２５の運転命令で第二循環回路用循環ポンプ２７が駆動し、連動して耐圧ポンプ２０を駆動しバーナ１３を着火する。第一の循環回路１９では、耐圧ポンプ２０により湯が循環する際、バーナ１３の燃焼熱により加温され、第一の二重管熱交換器２３で第二の循環回路２６側へ伝熱する。第二の循環回路２６では、第二循環回路用循環ポンプ２７により温水が第二の循環回路２６を循環し、第一の二重管熱交換器２３で受熱した熱を暖房装置２５で放熱して温風を吹き出す。 Next, at the time of heating operation, the circulation pump 27 for the second circulation circuit is driven by the operation command of the heating device 25, and the pressure-resistant pump 20 is driven in conjunction with it to ignite the burner 13. In the first circulation circuit 19, when hot water is circulated by the pressure-resistant pump 20, it is heated by the combustion heat of the burner 13, and is transferred to the second circulation circuit 26 side by the first double pipe heat exchanger 23. . In the second circulation circuit 26, the hot water circulates through the second circulation circuit 26 by the second circulation circuit circulation pump 27, and the heat received by the first double pipe heat exchanger 23 is radiated by the heating device 25. And blow out warm air.

次に風呂の追い焚き運転時には、浴槽２９の追い焚き運転命令で第三循環回路用循環ポンプ３１が駆動し、連動して耐圧ポンプ２０を駆動しバーナ１３を着火する。第一の循環回路１９では、耐圧ポンプ２０により湯が循環する際、バーナ１３の燃焼熱により加温され、第二の二重管熱交換器２４で第三の循環回路３０側へ伝熱する。第三の循環回路３０では、第三循環回路用循環ポンプ３１により浴槽水が第三の循環回路３０を循環し、第二の二重管熱交換器２４で受熱した熱を浴槽２９で放熱して風呂の追い焚きを行う。 Next, at the time of reheating the bath, the circulation pump 31 for the third circulation circuit is driven by the reheating operation command for the bathtub 29, and the pressure pump 20 is driven in conjunction with the operation to ignite the burner 13. In the first circulation circuit 19, when hot water is circulated by the pressure pump 20, the hot water is heated by the combustion heat of the burner 13, and is transferred to the third circulation circuit 30 side by the second double pipe heat exchanger 24. . In the third circulation circuit 30, the bathtub water circulates in the third circulation circuit 30 by the third circulation circuit circulation pump 31, and the heat received by the second double pipe heat exchanger 24 is radiated in the bathtub 29. Retreat the bath.

上記動作において、第一の循環回路１９はケーシング１２の内部に設けているため配管長は極めて短いため圧力損失が小さく小型の耐圧ポンプ２０で循環できる。すなわち熱損失も少なくランニングコストを抑制できる。 In the above operation, since the first circulation circuit 19 is provided inside the casing 12, the piping length is extremely short, so that the pressure loss is small and it can be circulated by the small pressure pump 20. That is, the running cost can be suppressed with little heat loss.

また、暖房装置２５で必要な温水温度は約８０℃であり、風呂の追い焚きに必要な浴槽２９への供給温度は約６０℃であることから、第一の循環回路１９の熱交換器１４の出口１７側に第二の循環回路２６を設けることで第一の循環回路内の温水温度勾配の効率がよい構成となる。すなわち、暖房運転能力は充分確保でき、風呂の追い焚き運転制御も容易となる。風呂の追い焚き能力を多少落としてもよいのであれば、第三の循環回路３０を出口１７の近傍側へ設けてもよい。また、強制対流型熱交換器を二重管熱交換器としたがプレート式熱交換器としても同様の効果を発揮する。 Further, since the hot water temperature necessary for the heating device 25 is about 80 ° C. and the supply temperature to the bathtub 29 necessary for bathing is about 60 ° C., the heat exchanger 14 of the first circulation circuit 19 is used. By providing the second circulation circuit 26 on the outlet 17 side, the efficiency of the hot water temperature gradient in the first circulation circuit is improved. That is, sufficient heating operation capability can be secured, and bath reheating operation control becomes easy. The third circulation circuit 30 may be provided in the vicinity of the outlet 17 if the bath reheating ability may be reduced to some extent. Moreover, although the forced convection type heat exchanger is a double-pipe heat exchanger, the same effect can be achieved as a plate heat exchanger.

さらに、暖房運転や風呂追い焚き運転と連動して、第一の循環回路１９の温水が循環した後に熱交換器１４を加熱する動作に移行するため、熱交換器１４の空焚きは発生しないため耐久性能が向上するものである。 Furthermore, in conjunction with the heating operation or the bath reheating operation, since the operation moves to the operation of heating the heat exchanger 14 after the hot water in the first circulation circuit 19 circulates, the air heating of the heat exchanger 14 does not occur. Durability is improved.

なお、バーナ１３で熱交換器１４に燃焼熱を供給する構成について説明したが、バーナ１３の燃焼熱を第一の強制対流型熱交換器２３もしくは第二の強制対流型熱交換器２４に直接供給すれば、さらに装置を小型にできる。 In addition, although the structure which supplies a combustion heat to the heat exchanger 14 with the burner 13 was demonstrated, the combustion heat of the burner 13 is directly supplied to the 1st forced convection type heat exchanger 23 or the 2nd forced convection type heat exchanger 24. If supplied, the device can be further reduced in size.

また、ここでは強制対流型熱交換器を二つ示した例を示したが、図２（ａ）に示すように当然一つの強制対流型熱交換器のみを第一の循環回路に設け、給湯風呂装置とするか、図２（ｂ）に示すように給湯暖房装置としてもそれぞれの機能は同様に満足できるものである。 In addition, although an example in which two forced convection heat exchangers are shown is shown here, as shown in FIG. 2A, only one forced convection heat exchanger is naturally provided in the first circulation circuit, Each function can be satisfied similarly as a bath apparatus or as a hot water supply / heating apparatus as shown in FIG.

（実施の形態２）
図３は本発明の実施の形態２における燃焼装置を示す風呂構成図である。本実施の形態２において、実施の形態１と異なる点は第一の循環回路２０に三台の第二の強制対流型熱交換器２４と第三の循環回路３０と第三循環回路用循環ポンプ３１とを備えたものである。 (Embodiment 2)
FIG. 3 is a bath configuration diagram showing the combustion apparatus according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in that the first circulation circuit 20 includes three second forced convection heat exchangers 24, a third circulation circuit 30, and a third circulation circuit circulation pump. 31.

なお、実施の形態１と同一符号のものは同一構造を有し、説明は省略する。 In addition, the thing of the same code | symbol as Embodiment 1 has the same structure, and abbreviate | omits description.

次に動作、作用を説明すると、第一の循環回路１９に三台の強制対流型熱交換器２４を設けているため、同時に３室の浴槽２９の追い焚きが可能となる。ここで浴槽２９を３台同時に追い焚きできる構成を示したが二台もしくは三台以上であっても同様の効果を発揮できる。 Next, the operation and action will be described. Since the three forced convection heat exchangers 24 are provided in the first circulation circuit 19, it is possible to replenish the three-room bathtub 29 at the same time. Here, a configuration has been shown in which three bathtubs 29 can be chased simultaneously, but the same effect can be exhibited even if there are two or three or more.

（実施の形態３）
図４は本発明の実施の形態３における第二の二重管熱交換器２４を示す構成図である。本実施の形態３において、実施の形態２と異なる点は第二の強制対流型熱交換器である第二の二重管熱交換器２４が傾斜して構成され、第三循環回路用循環ポンプ３１が存在しない構成である。 (Embodiment 3)
FIG. 4 is a configuration diagram showing a second double-pipe heat exchanger 24 according to Embodiment 3 of the present invention. The third embodiment is different from the second embodiment in that the second double-tube heat exchanger 24, which is the second forced convection heat exchanger, is configured to be inclined, and the third circulation circuit circulation pump. In this configuration, 31 does not exist.

なお、実施の形態２と同一符号のものは同一構造を有し、説明は省略する。 In addition, the thing of the same code | symbol as Embodiment 2 has the same structure, and abbreviate | omits description.

次に動作、作用を説明すると、第一の循環回路１９を高温の温水が通過すると第二の二重管熱交換器２４の外側管路３３を通過し、内側管路３４を通過する浴槽水を加熱する。加熱された浴槽水は上方へ移動し浴槽２９へと自然循環する。従って、浴槽２９へ追い焚き用の湯を搬送する第三循環回路用循環ポンプ３１が無くてもよいため、装置を小型化できる。 Next, the operation and action will be described. When hot hot water passes through the first circulation circuit 19, it passes through the outer pipe 33 of the second double pipe heat exchanger 24 and passes through the inner pipe 34. Heat. The heated bathtub water moves upward and circulates naturally to the bathtub 29. Therefore, there is no need for the third circulation circuit circulation pump 31 for transporting the hot water for reheating to the bathtub 29, so that the apparatus can be miniaturized.

なお、第一の循環回路１９を第二の二重管熱交換器２４の内側管路３４を循環し、外側管路３３を浴槽水が循環する構成としても同様の効果を発揮する。 In addition, the same effect is exhibited even if the first circulation circuit 19 is circulated through the inner pipe 34 of the second double pipe heat exchanger 24 and the bathtub water is circulated through the outer pipe 33.

（実施の形態４）
図５は本発明の実施の形態４における燃焼装置を示す構成図である。本実施の形態４において、実施の形態１と異なる点は、給水管１６と給湯管１８にミキシング回路３５を設け、ミキシング回路３５には、熱交換器１４と出口１７の間に設けたサーミスタ３６と吸水管１６に設けたサーミスタ３７とにより設定水温となるようにミキシング量を調整する流量制御装置である水量制御弁３８とで構成される。 (Embodiment 4)
FIG. 5 is a block diagram showing a combustion apparatus according to Embodiment 4 of the present invention. The fourth embodiment is different from the first embodiment in that a mixing circuit 35 is provided in the water supply pipe 16 and the hot water supply pipe 18, and the thermistor 36 provided between the heat exchanger 14 and the outlet 17 is provided in the mixing circuit 35. And a thermistor 37 provided in the water absorption pipe 16, and a water amount control valve 38, which is a flow rate control device that adjusts the mixing amount so as to achieve a set water temperature.

次に動作、作用を説明すると、風呂の追い焚きや暖房運転をしている時は、第一の循環回路１９には高温の湯が循環する。この時、第一の循環回路１９を循環している湯の温度をサーミスタ３６で検知し給水温度をサ−ミスタ３７で検知し、水量制御弁３８の開度を調整する。給湯栓３２を開栓すると高温の湯が出湯するが、これを回避するためミキシング回路３５から水を出湯管１８にバイパスし所望の温度の湯を出湯できる。すなわち、給湯栓３２はあらゆる種類のバルブを使用することが出来、ミキシングバルブ以外の給湯栓でもよい。 Next, the operation and action will be described. When bathing or heating operation is performed, hot water circulates in the first circulation circuit 19. At this time, the temperature of the hot water circulating through the first circulation circuit 19 is detected by the thermistor 36, the feed water temperature is detected by the thermistor 37, and the opening of the water amount control valve 38 is adjusted. When the hot-water tap 32 is opened, hot hot water is discharged. To avoid this, water is bypassed from the mixing circuit 35 to the hot water discharge pipe 18, and hot water at a desired temperature can be discharged. That is, the hot water tap 32 can use all kinds of valves, and may be a hot water tap other than the mixing valve.

なお、前記実施の形態において流量制御装置は水量制御弁としたが、複数のミキシング回路と複数の電磁弁を設け、バイパスする水量を電磁弁の開閉の個数で調整しても同様の効果を得ることができる。 In the above embodiment, the flow rate control device is a water amount control valve. However, the same effect can be obtained even if a plurality of mixing circuits and a plurality of electromagnetic valves are provided and the amount of water to be bypassed is adjusted by the number of opening and closing of the electromagnetic valves. be able to.

（実施の形態５）
図６は本発明の実施の形態５の積層熱交換器を示す構成図である。本実施の形態５において、実施の形態１と異なる点は、第一の強制対流型熱交換器が積層熱交換器で構成されていることである。積層熱交換器のプレートには、第一の循環回路入口３９と出口４０、第二の循環回路入口４１と出口４２が設けられている押さえプレート４３と、第一の循環回路１９が切られているプレートＡ４４と、隔壁であるプレートＢ４５と、第二の循環回路２６が切られているプレートＣ４６がある。さらに、各プレートを積層し一体化した際に、各循環回路のヘッダー部を形成する貫通孔４７および４８が設けられている。 (Embodiment 5)
FIG. 6 is a block diagram showing a laminated heat exchanger according to Embodiment 5 of the present invention. The fifth embodiment is different from the first embodiment in that the first forced convection heat exchanger is composed of a laminated heat exchanger. The plate of the laminated heat exchanger has a first circulation circuit inlet 39 and an outlet 40, a holding plate 43 provided with a second circulation circuit inlet 41 and an outlet 42, and a first circulation circuit 19 cut off. Plate A44, a partition plate B45, and a plate C46 in which the second circulation circuit 26 is cut. Furthermore, when the plates are stacked and integrated, through holes 47 and 48 that form header portions of the circulation circuits are provided.

また、熱交換を行う際のプレート４５には、各プレートを積層し一体化した際に、各循環回路のヘッダー部を形成する貫通孔４９および５０が設けられている。 In addition, the plate 45 used for heat exchange is provided with through holes 49 and 50 that form header portions of the circulation circuits when the plates are stacked and integrated.

さらに、プレートＢ４５を介して、プレートＡ４４の流路５１と対向する位置に、プレートＣ４６の流路５２が設けられている。 Further, the flow path 52 of the plate C46 is provided at a position facing the flow path 51 of the plate A44 via the plate B45.

これらのプレートＡ４４、プレートＢ４５、プレートＣ４６、プレートＢ４５を順番に重ねて１組とし、さらに複数組積層して一体化することにより、積層熱交換器が形成される。 The plate A44, plate B45, plate C46, and plate B45 are sequentially stacked to form one set, and a plurality of sets are stacked and integrated to form a stacked heat exchanger.

次に動作、作用を説明すると、暖房運転をしている時は、第一の循環回路１９には高温の湯が循環する。この時、第一の循環回路入口３９から入った温水は貫通孔４７からプレートＡ４４の流路５１を流れ第一の循環回路出口４０から出る。一方対向するプレートＣ４６の流路５２には、プレートＢ４５を介して第二の循環回路２６の温水へ伝熱し暖房用の熱が供給される。この様に積層熱交換器を使用することで小型で効率のよい強制対流型熱交換器を実現できるため装置を小型化できる。 Next, the operation and action will be described. During the heating operation, hot water circulates in the first circulation circuit 19. At this time, the hot water entering from the first circulation circuit inlet 39 flows from the through hole 47 through the flow path 51 of the plate A 44 and exits from the first circulation circuit outlet 40. On the other hand, in the flow path 52 of the plate C46 which opposes, heat is transferred to the warm water of the second circulation circuit 26 via the plate B45 and supplied for heating. By using a laminated heat exchanger in this way, a compact and efficient forced convection heat exchanger can be realized, and the apparatus can be downsized.

なお、各プレートを一体化接合する方法としては、例えば拡散溶接やロウ付けが用いられる。拡散溶接は、真空内でプレートの母材の融点より少し低い温度まで昇温し加圧するもので、プレート材料の拡散によって一体化するものである。ロウ付けは、プレートの母材よりも融点の低いロウ材を全ての接合面に付けて、真空または不活性雰囲気内でロウ材の融点まで昇温し、ロウ材のみを溶融させて一体化するものである。 For example, diffusion welding or brazing is used as a method for integrally joining the plates. In diffusion welding, the temperature is raised to a temperature slightly lower than the melting point of the base material of the plate in a vacuum and is pressed, and is integrated by diffusion of the plate material. Brazing is performed by attaching a brazing material having a melting point lower than that of the base material of the plate to all the joining surfaces, raising the temperature to the melting point of the brazing material in a vacuum or in an inert atmosphere, and melting and integrating only the brazing material. Is.

（実施の形態６）
図７と図８は本発明の実施の形態６の積層熱交換器とフィルタを示す構成図である。本実施の形態６において、実施の形態１と実施の形態５と異なる点は、第二の強制対流型熱交換器が積層熱交換器で構成され、積層熱交換器の第三の循環回路の入口側にフィルタを設けている点である。積層熱交換器のプレートには、第一の循環回路入口３９と出口４０、第三の循環回路入口５３と出口５４が設けられている押さえプレート４３と、第一の循環回路１９が切られているプレートＡ４４と、隔壁であるプレートＢ４５と、第三の循環回路３０が切られているプレートＤ５５がある。さらに各プレートを積層し一体化した際に、各循環回路のヘッダー部を形成する貫通孔４７および貫通孔４８が設けられている。また、熱交換を行う際のプレートＢ４５には、各プレートを積層し一体化した際に、各循環回路のヘッダー部を形成する貫通孔４９および貫通孔５０が設けられている。さらに、プレートＢ４５を介して、プレートＡ４４の流路５１と対向する位置に、プレートＤ５５の流路５６が設けられている。これらのプレートＡ４４、プレートＢ４５、プレートＤ５５、プレートＢ４５を順番に重ねて１組とし、さらに複数組積層して一体化することにより、積層熱交換器が形成される。 (Embodiment 6)
7 and 8 are configuration diagrams showing a laminated heat exchanger and a filter according to Embodiment 6 of the present invention. The sixth embodiment is different from the first and fifth embodiments in that the second forced convection heat exchanger is configured by a laminated heat exchanger, and the third circulation circuit of the laminated heat exchanger is This is that a filter is provided on the inlet side. The plate of the laminated heat exchanger has a first circulation circuit inlet 39 and an outlet 40, a holding plate 43 provided with a third circulation circuit inlet 53 and an outlet 54, and a first circulation circuit 19 cut off. Plate A44, a partition plate B45, and a plate D55 in which the third circulation circuit 30 is cut. Furthermore, when the plates are stacked and integrated, a through hole 47 and a through hole 48 that form a header portion of each circulation circuit are provided. Further, the plate B45 when performing heat exchange is provided with a through hole 49 and a through hole 50 that form a header portion of each circulation circuit when the plates are stacked and integrated. Further, the flow path 56 of the plate D55 is provided at a position facing the flow path 51 of the plate A44 via the plate B45. The plate A44, plate B45, plate D55, and plate B45 are sequentially stacked to form one set, and a plurality of sets are stacked and integrated to form a stacked heat exchanger.

さらに、第三の循環回路入口５３の前段には着脱可能なフィルタ５７が設けられている。 Further, a detachable filter 57 is provided in the front stage of the third circulation circuit inlet 53.

次に動作、作用を説明すると、風呂の追い焚き運転をしている時は、第一の循環回路１９には高温の湯が循環する。この時、第一の循環回路入口３９から入った温水は貫通孔４７から流路５１を流れ第一の循環回路の出口４０から出る。一方対向するプレートＤ５５の流路５６には、プレートＢ４５を介して第三の循環回路３０の浴槽２９の温水へ伝熱し風呂の追い焚き用の熱が供給される。この様に積層熱交換器を使用することで小型で効率のよい強制対流型熱交換器を実現できるため装置を小型化できる。 Next, the operation and action will be described. When the bath reheating operation is performed, hot water circulates in the first circulation circuit 19. At this time, the hot water entering from the first circulation circuit inlet 39 flows through the flow path 51 from the through hole 47 and exits from the outlet 40 of the first circulation circuit. On the other hand, the channel 56 of the opposing plate D55 is transferred to the hot water of the bathtub 29 of the third circulation circuit 30 through the plate B45 and supplied with heat for bathing. By using a laminated heat exchanger in this way, a compact and efficient forced convection heat exchanger can be realized, and the apparatus can be downsized.

さらに着脱可能なフィルタ５７で浴槽２９から循環してくる毛髪や湯垢等のゴミをトラップし積層熱交換器の流路５６に入り込まない構成としているため安定した熱効率を確保でき、フィルタを交換することで熱交詰まりを防ぎ第三の循環回路３０の圧力損失の増加も防ぐことができる。 In addition, the filter 57 can be attached and removed to trap dust such as hair and scale circulating from the bathtub 29 so that it does not enter the flow path 56 of the laminated heat exchanger, so that stable thermal efficiency can be secured and the filter can be replaced. Thus, heat exchange clogging can be prevented and an increase in pressure loss of the third circulation circuit 30 can also be prevented.

以上のように、本発明にかかる給湯装置は、給湯機と風呂追い焚き機能を具備した給湯風呂装置や給湯機と暖房機能を具備した給湯暖房機等の複合給湯機の小型化と即湯を実現できるので、家庭用、業務用の給湯装置等の用途に適用できる。 As described above, the hot water supply apparatus according to the present invention can reduce the size of a combined hot water supply apparatus such as a hot water bath apparatus having a hot water heater and a bath reheating function or a hot water heater having a heating function and a heating function, and immediate hot water. Since it can be realized, it can be applied to uses such as domestic and commercial hot water supply devices.

本発明の実施の形態１における給湯装置の構成図Configuration diagram of hot water supply apparatus in Embodiment 1 of the present invention （ａ）同実施の形態１における給湯暖房装置の構成図（ｂ）同実施の形態１における給湯風呂装置の構成図(A) The block diagram of the hot-water supply heating apparatus in Embodiment 1 (b) The block diagram of the hot-water bath apparatus in Embodiment 1 本発明の実施の形態２における給湯装置の構成図The block diagram of the hot-water supply apparatus in Embodiment 2 of this invention 本発明の実施の形態３における二重管熱交換器の拡大構成図The expanded block diagram of the double pipe heat exchanger in Embodiment 3 of this invention 本発明の実施の形態４における給湯装置の構成図The block diagram of the hot-water supply apparatus in Embodiment 4 of this invention 本発明の実施の形態５における積層熱交換器の分解斜視図The exploded perspective view of the lamination heat exchanger in Embodiment 5 of the present invention 本発明の実施の形態５における積層熱交換器の分解斜視図The exploded perspective view of the lamination heat exchanger in Embodiment 5 of the present invention 本発明の実施の形態６におけるフィルタの構成図Configuration diagram of the filter according to the sixth embodiment of the present invention 従来の給湯装置の構成図Configuration diagram of conventional hot water supply equipment

符号の説明Explanation of symbols

１２ケーシング
１３バーナ
１４熱交換器
１５入口
１６給水管
１７出口
１８給湯管
１９第一の循環回路
２０搬送手段
２３第一の二重管熱交換器（第一の強制対流型熱交換器）
２４第二の二重管熱交換器（第二の強制対流型熱交換器）
２５暖房装置（負荷装置）
２６第二の循環回路
２７第二循環回路用循環ポンプ
２９浴槽（負荷装置）
３０第三の循環回路
３１第三循環回路用循環ポンプ
３５ミキシング回路
３８流量制御装置
４４プレートＡ
４５プレートＢ
４６プレートＣ
５５プレートＤ
５７フィルタ DESCRIPTION OF SYMBOLS 12 Casing 13 Burner 14 Heat exchanger 15 Inlet 16 Water supply pipe 17 Outlet 18 Hot water supply pipe 19 1st circulation circuit 20 Conveyance means 23 1st double pipe heat exchanger (1st forced convection type heat exchanger)
24 Second double-tube heat exchanger (second forced convection heat exchanger)
25 Heating device (load device)
26 Second circulation circuit 27 Circulation pump for second circulation circuit 29 Bathtub (load device)
30 Third Circulation Circuit 31 Third Circulation Circuit Circulation Pump 35 Mixing Circuit 38 Flow Control Device 44 Plate A
45 Plate B
46 Plate C
55 Plate D
57 Filter

Claims

給湯装置のケーシング内に、バーナと、前記バーナで加熱される熱交換器と、前記熱交換器の入口に設けた給水管と、出口に設けた給湯管と、前記出口から分岐し前記入口との間で閉回路を形成する第一の循環回路と、前記第一の循環回路中の温水を循環させる搬送手段と、前記第一の循環回路の温水を利用して複数の負荷装置に熱量を供給する強制対流型熱交換器とを備え、前記強制対流型熱交換器は、負荷装置である暖房装置との間で第二の循環回路を形成し第二循環回路用循環ポンプにより温水を循環して熱交換を行う第一の強制対流型熱交換器と、負荷装置である風呂装置との間で第三の循環回路を形成し第三循環回路用循環ポンプにより温水を循環して熱交換を行う第二の強制対流型熱交換器とで構成し、前記第一の強制対流型熱交換器または第二の強制対流型熱交換器の何れか一方をプレート式熱交換器とし、他方を二重管熱交換器とした給湯装置。 In the casing of the hot water supply device, a burner, a heat exchanger heated by the burner, a water supply pipe provided at the inlet of the heat exchanger, a hot water supply pipe provided at the outlet, a branch from the outlet, and the inlet A first circulation circuit that forms a closed circuit between the first circulation circuit, a conveying means that circulates the warm water in the first circulation circuit, and a plurality of load devices using the warm water of the first circulation circuit. A forced convection heat exchanger to supply, the forced convection heat exchanger forms a second circulation circuit with a heating device as a load device, and circulates hot water by a circulation pump for the second circulation circuit A third circulation circuit is formed between the first forced convection heat exchanger that performs heat exchange and the bath device that is the load device, and heat is circulated by circulating hot water using a circulation pump for the third circulation circuit. A second forced convection heat exchanger that performs the first forced convection heat Exchanger or one of the second forced convection heat exchanger and plate heat exchanger, hot water supply apparatus and the other was a double-pipe heat exchanger.