JP5567948B2

JP5567948B2 - Heat source equipment

Info

Publication number: JP5567948B2
Application number: JP2010196852A
Authority: JP
Inventors: 清福沢
Original assignee: 株式会社ガスター
Priority date: 2010-09-02
Filing date: 2010-09-02
Publication date: 2014-08-06
Anticipated expiration: 2030-09-02
Also published as: JP2012052752A

Description

本発明は、浴槽湯水の追い焚き循環路と暖房液体循環通路とを熱的に接続して形成される熱源装置に関するものである。 The present invention relates to a heat source device that is formed by thermally connecting a reheating circulation path of bathtub hot water and a heating liquid circulation path.

例えば床暖房に用いる温水マット等の暖房装置に温水等の液体を循環させる循環通路と、浴槽湯水の追い焚き循環通路とを熱的に接続してなる熱源装置が用いられている（例えば、特許文献１、参照）。 For example, a heat source device is used in which a circulation passage that circulates a liquid such as hot water in a heating device such as a hot water mat used for floor heating and a recirculation circulation passage for bath water are thermally connected (for example, patents). Reference 1).

図２には、このような複合的な熱源装置の一例が示されている。この熱源装置は、給湯機能と風呂の追い焚き機能と暖房機能とを備えており、暖房装置１０（１０ａ〜１０ｃ）と浴槽２７とを熱的に接続して形成されている。同図において、暖房装置１０（１０ａ〜１０ｃ）に液体（例えば温水）を循環させる暖房用液体循環通路５は、器具ケース４２内に設けられた管路８９，９０，９１，９２，９３，９４，９５，９６，９７，９８，９９と、器具ケース４２の外部に設けられた管路４０，４１，４４，４５，５９とを有している。 FIG. 2 shows an example of such a composite heat source device. This heat source device has a hot water supply function, a bath reheating function, and a heating function, and is formed by thermally connecting the heating device 10 (10a to 10c) and the bathtub 27. In the figure, a heating liquid circulation passage 5 for circulating a liquid (for example, hot water) to the heating device 10 (10a to 10c) is provided by pipes 89, 90, 91, 92, 93, 94 provided in the appliance case 42. , 95, 96, 97, 98, 99 and conduits 40, 41, 44, 45, 59 provided outside the instrument case 42.

管路４０は管路９７に接続され、管路４１，４４は液体合流手段１５と管路５９と介して管路９５に接続され、管路４５は液体分岐手段３７を介して管路９０に接続されている。管路４０，４１には、暖房装置１０ａの内部通路５１が接続され、管路４４，４５には、暖房装置１０ｂ，１０ｃの内部通路５２がそれぞれ接続されている。暖房装置１０ｂ，１０ｃは例えば温水マット等の低温暖房装置であり、暖房装置１０ａは予め定められる高温暖房設定温度（例えば８０℃）の液体が供給される、浴室暖房機等の高温暖房装置であり、暖房装置１０ａには熱動弁１２が設けられている。なお、液体分岐手段３７と液体合流手段１５には、必要に応じ、同図に示している他にも暖房装置を接続することができる。 The pipe line 40 is connected to the pipe line 97, the pipe lines 41 and 44 are connected to the pipe line 95 via the liquid merging means 15 and the pipe line 59, and the pipe line 45 is connected to the pipe line 90 via the liquid branching means 37. It is connected. The pipes 40 and 41 are connected to the internal passage 51 of the heating device 10a, and the pipes 44 and 45 are connected to the internal passage 52 of the heating devices 10b and 10c, respectively. The heating devices 10b and 10c are low-temperature heating devices such as hot water mats, and the heating device 10a is a high-temperature heating device such as a bathroom heater that is supplied with a liquid at a predetermined high-temperature heating set temperature (for example, 80 ° C.). The heating device 10a is provided with a thermal valve 12. In addition to the one shown in the figure, a heating device can be connected to the liquid branching means 37 and the liquid merging means 15 as necessary.

暖房用液体循環通路５には、該暖房用液体循環通路５に液体を循環させる液体循環ポンプ６と、該液体循環ポンプ６の駆動により循環する液体を加熱する暖房用暖房熱用交換器２８（２８ａ，２８ｂ）が設けられている。暖房熱用交換器２８ａの液体導入側には管路９５が、液体導出側には管路９４がそれぞれ接続されており、暖房熱用交換器２８ｂの液体導入側には管路９１が、液体導出側には管路９２がそれぞれ接続されている。管路９２には、暖房高温サーミスタ３３が設けられており、暖房高温サーミスタ３３は、暖房熱用交換器２８ｂから出る液体の温度を検出する。 In the heating liquid circulation passage 5, a liquid circulation pump 6 that circulates liquid in the heating liquid circulation passage 5, and a heating / heating heat exchanger 28 that heats the liquid circulated by driving the liquid circulation pump 6 ( 28a, 28b). A pipe 95 is connected to the liquid introduction side of the heating heat exchanger 28a, and a pipe 94 is connected to the liquid outlet side, and a pipe 91 is connected to the liquid introduction side of the heating heat exchanger 28b. Pipe lines 92 are connected to the outlet side. A heating high temperature thermistor 33 is provided in the pipe line 92, and the heating high temperature thermistor 33 detects the temperature of the liquid coming out of the heating heat exchanger 28b.

また、管路９１は、前記液体循環ポンプ６の吐出側に、管路９０と共に接続されており、管路９１には、暖房熱用交換器２８ｂに導入される液体の温度を検出する暖房低温サーミスタ３６が設けられている。また、液体循環ポンプ６の吸入口側には前記管路９３が接続されており、管路９３と管路９４との間にはシスターン装置１００が介設されている。シスターン装置１００のタンク容量は、例えば約１〜１．８リットルであり、シスターン装置１００は、大気導入通路５３を介して大気開放と成している。 Further, the pipe line 91 is connected to the discharge side of the liquid circulation pump 6 together with the pipe line 90. The pipe line 91 has a heating low temperature for detecting the temperature of the liquid introduced into the heating heat exchanger 28b. A thermistor 36 is provided. Further, the pipe 93 is connected to the suction port side of the liquid circulation pump 6, and a cistern device 100 is interposed between the pipe 93 and the pipe 94. The tank capacity of the cistern apparatus 100 is, for example, about 1 to 1.8 liters, and the cistern apparatus 100 is open to the atmosphere via the atmosphere introduction passage 53.

暖房熱用交換器２８（２８ａ，２８ｂ）は、それぞれ、燃焼室２４内に設けられており、燃焼室２４には、暖房熱用交換器２８と共に、暖房熱用交換器２８を加熱するバーナ１６と、バーナ１６の燃焼の給排気を行なう燃焼ファン１８とが設けられている。また、燃焼室２４と連通して燃焼室２５が設けられ、燃焼室２５内には、バーナ１７と、バーナ１７により加熱される給湯熱交換器２９（２９ａ，２９ｂ）と、バーナ１７の燃焼の給排気を行なう燃焼ファン１９とが設けられている。 Heating heat exchangers 28 (28a, 28b) are provided in the combustion chamber 24, and the combustion chamber 24, together with the heating heat exchanger 28, burners 16 for heating the heating heat exchanger 28. And a combustion fan 18 for supplying and exhausting combustion of the burner 16 is provided. A combustion chamber 25 is provided in communication with the combustion chamber 24, and the combustion chamber 25 has a burner 17, a hot water heat exchanger 29 (29 a, 29 b) heated by the burner 17, and combustion of the burner 17. A combustion fan 19 for supplying and exhausting air is provided.

バーナ１６，１７には、それぞれのバーナ１６，１７に燃料を供給するガス管３１，３２が接続されている。これらのガス管３１，３２は、ガス管３０から分岐形成されており、ガス管３０には、ガス開閉弁８０が介設されている。また、ガス管３１には、ガス比例弁８６とガス開閉弁８１，８２が、ガス管３２には、ガス比例弁８７とガス開閉弁８３，８４，８５がそれぞれ介設されている。これらの弁８０〜８７はいずれも電磁弁により形成されており、ガス開閉弁８０〜８５は、対応するバーナ１６，１７への燃料供給・停止を制御し、ガス比例弁８６，８７は、対応するバーナ１６，１７への供給燃料量を弁開度でもって制御する。なお、バーナ１６，１７の燃焼制御は、図示されていない燃焼制御手段によって、適宜の制御方法により制御される。 Gas pipes 31 and 32 for supplying fuel to the burners 16 and 17 are connected to the burners 16 and 17. These gas pipes 31 and 32 are branched from the gas pipe 30, and a gas on / off valve 80 is interposed in the gas pipe 30. The gas pipe 31 is provided with a gas proportional valve 86 and gas on-off valves 81 and 82, and the gas pipe 32 is provided with a gas proportional valve 87 and gas on-off valves 83, 84 and 85, respectively. These valves 80 to 87 are all formed by electromagnetic valves, the gas on / off valves 80 to 85 control the fuel supply / stop to the corresponding burners 16 and 17, and the gas proportional valves 86 and 87 correspond to each other. The amount of fuel supplied to the burners 16 and 17 is controlled by the valve opening. The combustion control of the burners 16 and 17 is controlled by an appropriate control method by a combustion control means (not shown).

前記給湯熱交換器２９ａの入口側には給水導入通路８８が設けられている。この給水導入通路８８は、接続通路５７と補給水電磁弁４６を介して、前記シスターン装置１００に接続され、前記暖房用液体循環通路５に接続されている。給水導入通路８８の入口側には、給水導入通路８８を流れる湯水の量を検出する流量センサ７３と入水温度を検出する入水温度センサ７４が設けられている。また、熱交換器２９ｂの出口側には給湯通路２６が設けられており、給湯通路２６の先端側は、適宜の給湯先に導かれている。給湯通路２６には、分岐通路７０と湯水経路切替弁５８を介して前記給水導入通路８８が接続されており、給湯通路２６には、分岐通路７０の分岐部よりも下流側に出湯湯温検出センサ１１３が設けられ、熱交換器２９側に出湯湯温検出センサ１１４が設けられている。 A water supply introduction passage 88 is provided on the inlet side of the hot water supply heat exchanger 29a. The water supply introduction passage 88 is connected to the cistern apparatus 100 via the connection passage 57 and the makeup water electromagnetic valve 46 and is connected to the heating liquid circulation passage 5. On the inlet side of the water supply introduction passage 88, a flow rate sensor 73 for detecting the amount of hot water flowing through the water supply introduction passage 88 and a water entrance temperature sensor 74 for detecting the water entrance temperature are provided. Further, a hot water supply passage 26 is provided on the outlet side of the heat exchanger 29b, and the front end side of the hot water supply passage 26 is led to an appropriate hot water supply destination. The hot water supply passage 26 is connected to the water supply introduction passage 88 through a branch passage 70 and a hot water passage switching valve 58, and the hot water supply passage 26 detects the hot water temperature downstream of the branch portion of the branch passage 70. A sensor 113 is provided, and a hot water temperature detection sensor 114 is provided on the heat exchanger 29 side.

前記浴槽２７には、往管１４と戻り管１５を有する追い焚き循環通路１３が接続されており、この追い焚き循環通路１３は、熱交換手段としての液―液熱交換器７を介して、前記暖房用液体循環通路５と熱的に接続されている。なお、暖房用液体循環通路５の液―液熱交換器７を形成する管路８９には、液―液熱交換器７の入口に流量制御弁３８が設けられている。追い焚き循環通路１３には、浴槽湯水を循環させる浴槽湯水循環ポンプ２０が設けられ、液−液熱交換器７は、浴槽湯水循環ポンプ２０の駆動によって追い焚き循環路１３を循環する浴槽湯水を加熱する風呂熱交換器と成している。 A recirculation circulation passage 13 having an outgoing pipe 14 and a return pipe 15 is connected to the bathtub 27, and this recirculation circulation path 13 is connected via a liquid-liquid heat exchanger 7 as heat exchange means. The heating liquid circulation passage 5 is thermally connected. A flow rate control valve 38 is provided at the inlet of the liquid-liquid heat exchanger 7 in the pipe line 89 forming the liquid-liquid heat exchanger 7 of the heating liquid circulation passage 5. The recirculation circulation passage 13 is provided with a bathtub hot water circulation pump 20 that circulates the bathtub hot water, and the liquid-liquid heat exchanger 7 drives the bathtub hot water circulating in the recirculation circulation path 13 by driving the bathtub hot water circulation pump 20. It consists of a heated bath heat exchanger.

また、追い焚き循環通路１３には、浴槽湯水の温度を検出する浴槽湯水温検出手段としての風呂温度センサ２１と、浴槽湯水の水位を検出する水位センサ２２と、追い焚き循環路１３の水流を検知する風呂水流スイッチ３４とが介設されている。浴槽湯水循環ポンプ２０の吸入口側に、戻り管１５の一端側が接続され、戻り管１５の他端側が循環金具５６を介して浴槽２７に連通接続されている。浴槽湯水循環ポンプ２０の吐出口側には、往管１４の一端側が接続され、往管１４の他端側は循環金具５６を介して浴槽２７に連通接続されている。 The recirculation circulation passage 13 is supplied with a bath temperature sensor 21 as a bath water temperature detecting means for detecting the temperature of the bathtub hot water, a water level sensor 22 for detecting the water level of the bath water, and the water flow in the recirculation circuit 13. A bath water flow switch 34 to be detected is interposed. One end side of the return pipe 15 is connected to the suction port side of the bathtub hot water circulation pump 20, and the other end side of the return pipe 15 is connected to the bathtub 27 via the circulation fitting 56. One end side of the outgoing pipe 14 is connected to the discharge port side of the bathtub hot water circulation pump 20, and the other end side of the outgoing pipe 14 is connected to the bathtub 27 via a circulation fitting 56.

前記給湯通路２６には、分岐通路７０の形成部および出湯湯温検出センサ１１３の配設部よりも下流側に、管路５４を介して注湯水ユニット５５が接続されている。注湯水ユニット５５には風呂用注湯導入通路２３の一端側が接続され、風呂用注湯導入通路２３の他端側は、前記浴槽湯水循環ポンプ２０に接続されている。注湯水ユニット５５には、湯張り電磁弁４８、湯張り水量センサ４９、逆止弁５０ａ，５０ｂが設けられている。なお、熱交換器２９から給湯通路２６と管路５４、注湯水ユニット５５、風呂用注湯導入通路２３、浴槽湯水循環ポンプ２０、液−液熱交換器７、往管１４を順に通って浴槽２７に至るまでの通路によって、湯張りや注水を行うための湯張り注水通路が構成されている。また、図５の、図中、符号７５、７７は、ドレン排出通路を示し、符号７６は、ドレンを中和する中和手段を示す。 A pouring water unit 55 is connected to the hot water supply passage 26 via a pipe 54 on the downstream side of the formation portion of the branch passage 70 and the arrangement portion of the hot water temperature detection sensor 113. One end side of the bath pouring introduction passage 23 is connected to the pouring water unit 55, and the other end side of the bath pouring introduction passage 23 is connected to the bathtub hot water circulation pump 20. The hot water unit 55 is provided with a hot water solenoid valve 48, a hot water sensor 49, and check valves 50a and 50b. In addition, the hot water supply passage 26 and the pipe 54, the pouring water unit 55, the bath pouring introduction passage 23, the bath hot water circulation pump 20, the liquid-liquid heat exchanger 7, and the outgoing pipe 14 are sequentially passed from the heat exchanger 29 to the bathtub. The passage up to 27 constitutes a hot water injection passage for hot water filling and water injection. In FIG. 5, reference numerals 75 and 77 denote drain discharge passages, and reference numeral 76 denotes a neutralizing means for neutralizing the drain.

この熱源装置において、暖房装置１０の暖房運転を行うときには、バーナ１６によって暖房用熱交換器２８を加熱し、液体循環ポンプ６を駆動させることにより、暖房用液体循環通路５の液体を図３の矢印Ａ〜Ｇに示すように循環させる。つまり、管路９５から暖房用熱交換器２８ａに導入されて暖房用熱交換器２８ａで加熱された液体は、シスターン装置１００を通り、管路９３を通って液体循環ポンプ６に導入される。 In this heat source device, when the heating operation of the heating device 10 is performed, the heating heat exchanger 28 is heated by the burner 16 and the liquid circulation pump 6 is driven, whereby the liquid in the heating liquid circulation passage 5 is made to flow as shown in FIG. Circulate as indicated by arrows AG. That is, the liquid introduced into the heating heat exchanger 28 a from the pipe 95 and heated by the heating heat exchanger 28 a passes through the cistern apparatus 100 and is introduced into the liquid circulation pump 6 through the pipe 93.

そして、液体分岐手段３７の熱動弁３９が開いている状態においては、液体は液体循環ポンプ６の吐出側から管路９０側と管路９１側とにそれぞれ流れ、管路９０側に流れた液体は、管路９０，４５を順に通って暖房装置１０ｂ，１０ｃに導入される。また、液体循環ポンプ６の吐出側から管路９１側に導入された液体は、管路９１を通って暖房用熱交換器２８ｂに導入され、暖房用熱交換器２８ｂよりさらに加熱されて高温（例えば８０℃程度）とされた後、管路９２に導入される。 In the state where the thermal valve 39 of the liquid branching means 37 is open, the liquid flows from the discharge side of the liquid circulation pump 6 to the pipe line 90 side and the pipe line 91 side, and then flows to the pipe line 90 side. The liquid is introduced into the heating devices 10b and 10c through the pipes 90 and 45 in order. Further, the liquid introduced from the discharge side of the liquid circulation pump 6 to the pipe 91 side is introduced into the heating heat exchanger 28b through the pipe 91, and is further heated by the heating heat exchanger 28b to a high temperature ( For example, about 80 ° C.) and then introduced into the pipe 92.

この管路９２を通った液体は、暖房装置１０ａの熱動弁１２が開いている状態においては、管路９７側と管路８９側とにそれぞれ流れ、管路８９側（液―液熱交換器７側）に流れた液体は、管路９６を通り、管路９５に戻る。また、管路９７側に流れた液体は、管路４０を通って暖房装置１０ａに導入される。そして、各暖房装置１０ａ〜１０ｃに導入された液体は、対応する管路４１，４４と液体合流手段１５を通り、管路９５に戻る。なお、熱動弁１２，３９が閉じている場合には、その熱動弁１２，３９に接続されている暖房装置１０側への液体の流れ（管路９０，４５を通しての暖房装置１０ｂ，１０ｃへの流れや管路９７，４０を通しての暖房装置１０ａへの流れ）は停止される。 In the state where the thermal valve 12 of the heating apparatus 10a is open, the liquid passing through the pipe 92 flows to the pipe 97 side and the pipe 89 side, respectively, and the pipe 89 side (liquid-liquid heat exchange). The liquid that has flowed to the container 7 side passes through the pipe 96 and returns to the pipe 95. Further, the liquid that has flowed to the pipe line 97 side is introduced into the heating apparatus 10 a through the pipe line 40. And the liquid introduce | transduced into each heating apparatus 10a-10c passes along the corresponding pipe lines 41 and 44 and the liquid confluence | merging means 15, and returns to the pipe line 95. FIG. When the thermal valves 12 and 39 are closed, the liquid flows to the heating device 10 connected to the thermal valves 12 and 39 (the heating devices 10b and 10c through the pipes 90 and 45). And the flow through the pipes 97 and 40 to the heating device 10a) are stopped.

また、例えば熱源装置に接続されたリモコン装置からの浴槽湯水の追い焚き指令を受けて、浴槽湯水循環ポンプ２０を駆動させて、暖房用液体循環通路５内の液体を液−液熱交換器７に通しながら循環させ、浴槽湯水循環ポンプ２０を駆動させて追い焚き循環通路１３内に浴槽湯水を図２の矢印Ｈに示すように循環させ、この浴槽湯水と暖房用液体循環通路５を通る液体とを液―液熱交換器７を介して熱交換することにより浴槽２７内の湯水の追い焚き動作を行うことができる。この追い焚き動作中には、高温暖房サーミスタ３３の温度が設定温度（例えば８０℃）となるようにバーナ１６の燃焼を行いながら、風呂温度センサ２１の検出温度が風呂設定温度となるまで、暖房用液体循環通路５内の液体と追い焚き循環通路１３内の浴槽湯水とをそれぞれ循環させる。なお、風呂温度センサ２１の検出温度が風呂設定温度となったら、バーナ１６の燃焼を停止し、液体循環ポンプ６と浴槽湯水循環ポンプ２０は、予め定められたポストポンプ時間経過後に停止する。 Further, for example, in response to an instruction to rebath the bathtub hot water from a remote control device connected to the heat source device, the bathtub hot water circulation pump 20 is driven, and the liquid in the heating liquid circulation passage 5 is liquid-liquid heat exchanger 7. The bath hot water circulation pump 20 is driven to circulate the water in the recirculation circulation passage 13 as shown by the arrow H in FIG. 2, and the liquid passing through the bath hot water and the heating liquid circulation passage 5 is circulated. Are exchanged through the liquid-liquid heat exchanger 7 so that the hot water in the bathtub 27 can be retreated. During this reheating operation, the burner 16 is burned so that the temperature of the high temperature heating thermistor 33 becomes a set temperature (for example, 80 ° C.), and the heating is performed until the temperature detected by the bath temperature sensor 21 becomes the bath set temperature. The liquid in the liquid circulation passage 5 and the bath water in the recirculation circulation passage 13 are circulated. When the temperature detected by the bath temperature sensor 21 reaches the bath set temperature, combustion of the burner 16 is stopped, and the liquid circulation pump 6 and the bathtub hot water circulation pump 20 are stopped after a predetermined post pump time has elapsed.

さらに、この熱源装置において、浴槽２７への湯張り（自動湯張り動作）を行うときには、バーナ１７の燃焼によって熱交換器２９を通る水を加熱し、前記湯張り注水通路を通して湯を浴槽２７に注ぐ。そして、この自動湯張り後、例えば４時間といった保温動作時間中には、風呂温度センサ２１の検出温度を取り込み、その検出温度が予め設定される風呂設定温度より予め定められている許容範囲を超えて低下したときには、前記の追い焚き動作を例えば３分間行い、風呂温度センサ２１の検出温度が前記風呂設定温度となるようにする保温モードの機能の動作が行われる。 Further, in this heat source device, when hot water filling (automatic hot water filling operation) is performed on the bathtub 27, water passing through the heat exchanger 29 is heated by combustion of the burner 17, and hot water is supplied to the bathtub 27 through the hot water filling water passage. pour it up. Then, after this automatic hot water filling, for example, during the heat retention operation time of 4 hours, the detected temperature of the bath temperature sensor 21 is taken, and the detected temperature exceeds the predetermined allowable range from the preset bath set temperature. When the temperature drops, the reheating operation is performed for 3 minutes, for example, and the operation of the function of the heat retention mode is performed so that the detected temperature of the bath temperature sensor 21 becomes the bath set temperature.

特開平８―３５６７５号公報JP-A-8-35675

ところで、前記のような熱源装置において、浴槽湯水の追い焚き動作時には、暖房用液体循環通路５内の液体を加熱して浴槽湯水温を風呂設定温度まで高めることが行われるが、暖房用液体循環通路５には、１〜１．８リットル程度の液体容量が大きいシスターン装置１００が設けられており、浴槽湯水温を風呂設定温度まで加熱することにより高められたシスターン装置１００内や暖房用循環通路５等には高温の液体が残され、追い焚き停止後に自然冷却されて外部に逃げてしまうため、熱の無駄が多かった。なお、以下、このような暖房用液体循環通路やシスターン装置内の保有熱量を含めて、シスターン装置の保有熱量やシスターン装置が保有する熱量というように表現している。 By the way, in the heat source device as described above, at the time of reheating operation of the bathtub hot water, the liquid in the heating liquid circulation passage 5 is heated to raise the bathtub hot water temperature to the bath set temperature. The passage 5 is provided with a cistern device 100 having a large liquid capacity of about 1 to 1.8 liters, and the inside of the cistern device 100 and the heating circulation passage which are raised by heating the bath water temperature to the bath set temperature. A high-temperature liquid was left in the 5th grade, and since it was naturally cooled after stopping chasing and escaping to the outside, a lot of heat was wasted. Hereinafter, including the amount of heat retained in the heating liquid circulation passage and the cistern device, the amount of heat retained by the cistern device and the amount of heat retained by the cistern device are expressed.

本発明は、上記課題を解決するためになされたものであり、その目的は、熱エネルギーを極力無駄にせずに、風呂の追い焚き運転を行うことができる熱源装置を提供することにある。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a heat source device that can perform a reheating operation of a bath without wasting heat energy as much as possible.

本発明は上記目的を達成するために、次の構成をもって課題を解決する手段としている。すなわち、第１の発明は、暖房装置に液体を循環させる暖房用液体循環通路と、浴槽に接続される追い焚き循環通路とを有して、該追い焚き循環通路は熱交換手段を介して前記暖房用液体循環通路に熱的に接続され、前記暖房用液体循環通路には、該暖房用液体循環通路に液体を循環させる液体循環ポンプと、該液体循環ポンプの駆動により循環する液体を加熱する暖房用熱交換器と、シスターン装置とが設けられ、前記追い焚き循環通路には、浴槽湯水を循環させる浴槽湯水循環ポンプと、前記浴槽湯水の温度を検出する浴槽湯水温検出手段とが設けられ、浴槽湯水の追い焚き指令を受けて前記暖房用熱交換器により前記暖房用液体循環通路内の液体を加熱しながら循環させると共に前記追い焚き循環通路を通して浴槽湯水を循環させることによって、該浴槽湯水と前記暖房用液体循環通路を循環する液体とを前記熱交換手段を介して熱交換し、前記浴槽湯水温検出手段の検出温度が予め設定される風呂設定温度よりも低い予め定められる追い焚き停止温度となったときに前記暖房用熱交換器の加熱を停止した状態で前記暖房用液体循環通路内の液体の循環と前記追い焚き循環通路内の浴槽湯水の循環とを継続させ、前記暖房用熱交換器の加熱停止時以降に前記シスターン装置が保有するシスターン保有熱量を利用して前記追い焚き停止温度から前記風呂設定温度までの浴槽湯水の加熱を行うシスターン熱利用追い焚き制御手段を有する構成をもって課題を解決する手段としている。 In order to achieve the above object, the present invention has the following configuration as means for solving the problems. That is, the first invention has a heating liquid circulation passage for circulating the liquid in the heating device and a recirculation circulation passage connected to the bathtub, and the recirculation circulation passage is provided through the heat exchange means. A heating liquid circulation passage is thermally connected to the heating liquid circulation passage, and a liquid circulation pump that circulates the liquid in the heating liquid circulation passage and a liquid that is circulated by driving the liquid circulation pump are heated. A heating heat exchanger and a cistern device are provided, and the reheating circulation passage is provided with a bathtub hot water circulation pump for circulating the bathtub hot water and a bathtub hot water temperature detecting means for detecting the temperature of the bathtub hot water. In response to a reheating instruction for bathtub hot water, the heating heat exchanger circulates while heating the liquid in the heating liquid circulation passage and circulates the bathtub hot water through the reheating circulation passage. The bath hot water and the liquid circulating in the heating liquid circulation passage are heat exchanged via the heat exchanging means, and the temperature detected by the bath hot water temperature detecting means is lower than a preset bath setting temperature in advance. Continues circulation of liquid in the heating liquid circulation passage and bath water in the circulation circulation passage in a state where heating of the heating heat exchanger is stopped when a predetermined reheating stop temperature is reached. Cistern heat use reheating that heats the bath water from the reheating stop temperature to the bath set temperature using the heat amount retained by the cistern after the heating heat exchanger stops heating. The configuration having the control means is a means for solving the problem.

また、第２の発明は、前記第１の発明の構成に加え、前記浴槽湯水の水位を検出する水位検出手段と、シスターン装置に貯留される液体の温度を検出するシスターン内液体温度検出手段を有し、該シスターン内液体温度検出手段により検出される追い焚き動作中のシスターン内液体検出温度と前記シスターン装置の容量と風呂設定温度とに基づき、追い焚き動作における暖房用熱交換器の加熱停止時後に利用できる前記シスターン装置の保有熱量を算出する利用可保有熱量算出手段と、予め与えられる浴槽の水位と水量との関係データと前記水位検出手段により検出される追い焚き動作開始時の浴槽湯水の検出水位とに基づいて浴槽湯水の水量を推定する浴槽湯水量推定手段と、該浴槽湯水量推定手段により推定される水量と前記利用可保有熱量算出手段により算出した保有熱量と予め与えられる演算用データとに基づいて追い焚き停止温度を求める追い焚き停止温度算出手段を有することを特徴とする。 Further, the second invention includes, in addition to the configuration of the first invention, water level detection means for detecting the water level of the bathtub hot water and liquid temperature detection means in the cistern for detecting the temperature of the liquid stored in the cistern apparatus. And stopping heating of the heat exchanger for heating in the reheating operation based on the liquid detection temperature in the revolving operation detected by the liquid temperature detecting means in the cistern, the capacity of the cistern device, and the bath set temperature. The available stored heat amount calculating means for calculating the retained heat amount of the cistern apparatus that can be used after the time, the relation between the water level and the water amount of the bathtub given in advance, and the hot water at the start of the reheating operation detected by the water level detecting means Bathtub hot water amount estimating means for estimating the amount of bathtub hot water based on the detected water level, the amount of water estimated by the bathtub hot water amount estimating means, Characterized in that it has a reheating stop temperature calculating means obtains the reheating stop temperature on the basis of the arithmetic data that is previously given a heat held calculated by the amount-calculating means.

本発明によれば、暖房装置に液体を循環させる暖房用液体循環通路と、浴槽に接続される追い焚き循環通路とを熱的に接続し、暖房用液体循環通路内の液体を暖房用熱交換器により加熱して、この液体と浴槽循環通路を通す浴槽湯水と熱交換することにより浴槽湯水の追い焚き動作を行うが、浴槽湯水温検出手段の検出温度が予め設定される風呂設定温度よりも低い予め定められる追い焚き停止温度となったときに、暖房用熱交換器の加熱を停止するので、その分だけ暖房熱交換器の加熱時間を短くできる。そして、暖房用熱交換器の停止状態で前記暖房用液体循環通路内の液体の循環と前記追い焚き循環通路内の浴槽湯水の循環とを継続させ、前記暖房用熱交換器の加熱停止時以降に前記シスターン装置が保有するシスターン保有熱量を利用して前記追い焚き停止温度から前記風呂設定温度までの浴槽湯水の加熱を行うことにより、シスターン装置の保有熱量を浴槽湯水の追い焚きに有効利用することができる。 According to the present invention, the heating liquid circulation passage for circulating the liquid in the heating device and the recirculation circulation passage connected to the bathtub are thermally connected, and the heat in the heating liquid circulation passage is exchanged for heating. The bath water is reheated by exchanging heat with this liquid and the bathtub hot water passing through the bathtub circulation passage, but the detection temperature of the bathtub hot water temperature detecting means is higher than the preset bath temperature. Since heating of the heating heat exchanger is stopped when a low predetermined reheating stop temperature is reached, the heating time of the heating heat exchanger can be shortened accordingly. Then, in a stopped state of the heating heat exchanger, the circulation of the liquid in the heating liquid circulation passage and the circulation of the bathtub hot water in the recirculation circulation passage are continued, and after the heating of the heating heat exchanger is stopped By using the amount of heat retained by the cistern device in the cistern device to heat the bath water from the reheating stop temperature to the bath set temperature, the heat amount of the cistern device is effectively used for reheating the bath water. be able to.

つまり、従来のように浴槽湯水の追い焚き動作時に浴槽湯水温が風呂設定温度となるまで暖房用熱交換器により加熱すると、この加熱停止時にシスターン装置や循環通路が保有していた熱量は、追い焚き動作後に自然冷却により外部に逃げて無駄になってしまうが、追い焚き動作時に風呂設定温度よりも低い追い焚き停止温度までしか暖房用熱交換器による暖房用液体循環通路内の液体の加熱を行わないようにすると、その分だけ暖房用熱交換器を加熱するための熱量を小さくできるし、その後、シスターン装置の保有熱量を利用して暖房用液体循環通路内の液体を加熱することにより、シスターン装置の保有熱量を無駄に廃棄せずに、浴槽湯水の追い焚きに利用することができる。 In other words, if the bath water is heated by the heating heat exchanger until the bath water temperature reaches the bath set temperature during the reheating operation of the bath water as in the prior art, the amount of heat held by the system unit and the circulation passage when the heating is stopped is replenished. Although it escapes to the outside due to natural cooling after the sowing operation, the heating heat exchanger heats the liquid in the heating liquid circulation passage only to the reheating stop temperature lower than the bath set temperature during the reheating operation. If it is not performed, the amount of heat for heating the heating heat exchanger can be reduced by that amount, and then the liquid in the heating liquid circulation passage is heated using the amount of heat retained by the cistern device, It can be used to reclaim the bath water without wasting waste of heat held by the cistern device.

また、シスターン内液体温度検出手段により検出される追い焚き動作中のシスターン内液体検出温度と、シスターン装置の容量と、風呂設定温度とに基づき、追い焚き動作における暖房用熱交換器の加熱停止時後に利用できる前記シスターン装置の保有熱量を算出し、予め与えられる浴槽の水位と水量との関係データと、浴槽湯水の水位を検出する水位検出手段により検出される追い焚き動作開始時の浴槽湯水の検出水位とに基づいて、浴槽湯水の水量を推定し、この推定水量と前記保有熱量の算出値と予め与えられる演算用データとに基づいて追い焚き停止温度を求めることにより、的確に追い焚き停止温度を求めることができ、その求めた温度に基づき、前記のように追い焚き動作を制御することにより、シスターン装置の保有熱量を適切に有効利用でき、浴槽湯水の追い焚き動作も適切に行うことができる。 Also, when the heating heat exchanger for heating is stopped in the reheating operation based on the liquid detection temperature in the revolving operation detected by the in-cisternal liquid temperature detecting means, the capacity of the cistern device, and the bath set temperature. The stored heat amount of the cistern apparatus that can be used later is calculated, and the relation data between the water level and the water amount of the bathtub given in advance and the bath water at the start of the reheating operation detected by the water level detecting means for detecting the water level of the bathtub hot water Based on the detected water level, the amount of hot water in the bathtub is estimated, and the reheating stop temperature is determined based on the estimated water amount, the calculated value of the retained heat amount, and the calculation data given in advance, so that the reheating stop can be accurately performed. The temperature can be obtained, and based on the obtained temperature, the reheating operation is controlled as described above, so that the amount of heat held by the cistern apparatus is appropriately adjusted. Effective use can also bathtub hot water reheating operation can be properly performed.

本発明に係る熱源装置の一実施例の制御構成を示す説明図である。It is explanatory drawing which shows the control structure of one Example of the heat-source apparatus which concerns on this invention. 熱源装置のシステム構成例を模式的に示す説明図である。It is explanatory drawing which shows the system configuration example of a heat source device typically. 浴槽湯水の検出水位と水量との関係データ（Ｐ−Ｑデータ）の例を模式的に示すグラフである。It is a graph which shows typically the example of the relational data (PQ data) of the detection water level and water quantity of bathtub hot water. 実施例の熱源装置におけるシスターン装置の保有熱量を利用した追い焚き動作時の熱移動状態を説明するためのグラフである。It is a graph for demonstrating the heat transfer state at the time of the chasing operation | movement using the amount of heat of the cistern apparatus in the heat-source apparatus of an Example.

以下、本発明の実施の形態を図面に基づき説明する。なお、本実施例の説明において、従来例と同一名称部分には同一符号を付し、その重複説明は省略または簡略化する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the present embodiment, the same reference numerals are assigned to the same names as those in the conventional example, and the duplicate description is omitted or simplified.

本実施例の熱源装置のシステム構成は、図２に示した熱源装置と同様であり、本実施例の特徴的なことは、図１に示す特徴的な制御構成を有することである。つまり、本実施例では、制御装置１１内に、利用可熱量算出手段１、浴槽水量推定手段２、追い焚き停止温度算出手段３、メモリ部４、燃焼制御手段９が設けられており、燃焼制御手段９には、シスターン熱利用追い焚き制御手段８が設けられている。また、これらの手段１〜４，８，９は、熱源装置のリモコン装置６７，６８，６９に信号接続されている。 The system configuration of the heat source device of the present embodiment is the same as that of the heat source device shown in FIG. 2, and the characteristic feature of this embodiment is that it has the characteristic control configuration shown in FIG. That is, in the present embodiment, the available heat quantity calculating means 1, the bathtub water amount estimating means 2, the reheating stop temperature calculating means 3, the memory unit 4, and the combustion control means 9 are provided in the control device 11, and combustion control is performed. The means 9 is provided with a cistern heat utilization replenishment control means 8. Further, these means 1 to 4, 8 and 9 are signal-connected to the remote control devices 67, 68 and 69 of the heat source device.

リモコン装置６７は風呂リモコン装置であり、リモコン装置６８は、高温暖房装置１０ａのリモコン装置であり、リモコン装置６９は、低温暖房装置１０ｂ，１０ｃのリモコン装置である。リモコン装置６７には、風呂設定温度入力操作部６３と追い焚きスイッチ６０と風呂自動スイッチ６４とが設けられ、リモコン装置６８には暖房運転スイッチ６５が、リモコン装置６９には暖房運転スイッチ６６がそれぞれ設けられている。 The remote control device 67 is a bath remote control device, the remote control device 68 is a remote control device of the high-temperature heating device 10a, and the remote control device 69 is a remote control device of the low-temperature heating devices 10b and 10c. The remote control device 67 is provided with a bath set temperature input operation unit 63, a reheating switch 60, and a bath automatic switch 64. The remote control device 68 has a heating operation switch 65, and the remote control device 69 has a heating operation switch 66. Is provided.

暖房運転スイッチ６５，６６は、対応する暖房装置１０ａ，１０ｂ，１０ｃの運転のオンオフ動作指令を行うスイッチであり、暖房運転スイッチ６５，６６のオンオフ信号は、いずれも燃焼制御手段６２に加えられる。なお、暖房運転スイッチ６５がオンされると、暖房装置１０ａの熱動弁１２への通電が行われて所定時間（例えば１分）経過後に熱動弁１２が開き、暖房運転スイッチ６５がオフされると、前記熱動弁１２への通電が停止して所定時間（例えば２０秒）経過後に熱動弁１２が閉じる。また、暖房運転スイッチ６６がオンされると、燃焼制御手段６により熱動弁３７が開かれ、暖房運転スイッチ６６がオフされると、燃焼制御手段６により熱動弁３７が閉じられる。 The heating operation switches 65 and 66 are switches that perform on / off operation commands for the operation of the corresponding heating devices 10 a, 10 b, and 10 c, and all the on / off signals of the heating operation switches 65 and 66 are applied to the combustion control means 62. When the heating operation switch 65 is turned on, the heat valve 12 of the heating device 10a is energized, the heat valve 12 is opened after a predetermined time (for example, 1 minute), and the heating operation switch 65 is turned off. Then, energization of the thermal valve 12 is stopped, and the thermal valve 12 is closed after a predetermined time (for example, 20 seconds) has elapsed. Further, when the heating operation switch 66 is turned on, the thermal control valve 37 is opened by the combustion control means 6, and when the heating operation switch 66 is turned off, the thermal control valve 37 is closed by the combustion control means 6.

燃焼制御手段９は、暖房運転スイッチ６５のオン信号を受けて、バーナ１６の燃焼制御および燃焼ファン１８の回転制御を行うと共に、液体循環ポンプ６を駆動させる。燃焼制御手段９は、高温暖房装置１０ａの運転を行うときには８０℃の液体を供給できるように（暖房高温サーミスタ３３の検出温度が８０℃となるように）バーナ１６の燃焼制御および燃焼ファン１８の回転制御等を行って、暖房用熱交換器２８ａ，２８ｂを加熱し、暖房用液体循環通路５を循環する液体を加熱する。加熱された液体は、暖房用熱交換器２８ｂから約８０℃で導出され、図２の矢印Ａに示すように管路９２を通り、流量制御弁３８の閉状態においては、図２の矢印Ｂに示すように、管路９７，４０を順に通って暖房装置１０ａに供給される。 The combustion control means 9 receives the ON signal of the heating operation switch 65, performs combustion control of the burner 16 and rotation control of the combustion fan 18, and drives the liquid circulation pump 6. The combustion control means 9 controls the combustion of the burner 16 and the combustion fan 18 so that an 80 ° C. liquid can be supplied when the high temperature heating device 10a is operated (so that the temperature detected by the heating high temperature thermistor 33 is 80 ° C.). Rotation control or the like is performed to heat the heating heat exchangers 28a and 28b, and heat the liquid circulating in the heating liquid circulation passage 5. The heated liquid is led out from the heating heat exchanger 28b at about 80 ° C., passes through the conduit 92 as shown by the arrow A in FIG. 2, and in the closed state of the flow control valve 38, the arrow B in FIG. As shown in FIG. 4, the air is supplied to the heating device 10a through the pipes 97 and 40 in order.

暖房装置１０ａに供給された液体は、暖房装置１０ａの管路５１を通るときに放熱して、その温度が例えば６０℃程度に下がった状態で、矢印Ｂに示すように、管路４１，５９を通り、図２の矢印Ｃに示すように、管路９５を順に通って暖房用熱交換器２８ａに導入され、暖房用熱交換器２８ａによって加温される。この加温された液体は管路９４を通って導出され、図２の矢印Ｄに示すように、シスターン装置１００に導入され、シスターン装置１００を通った後に、図２の矢印Ｅに示すように、管路９３を通り、液体循環ポンプ６に導入される。その後、液体は、図２の矢印Ｆに示すように、管路９１を通って暖房用熱交換器２８ｂに導入され、暖房用熱交換器２８ｂによって加熱されて、前記と同様にして暖房用液体循環通路５を循環する。 The liquid supplied to the heating device 10a dissipates heat when passing through the pipeline 51 of the heating device 10a, and the pipelines 41, 59 are shown in an arrow B in the state where the temperature is lowered to about 60 ° C., for example. 2, as shown by an arrow C in FIG. 2, the pipe 95 is sequentially introduced into the heating heat exchanger 28 a and heated by the heating heat exchanger 28 a. The heated liquid is led out through the pipe 94, introduced into the cistern apparatus 100 as shown by an arrow D in FIG. 2, and after passing through the cistern apparatus 100, as shown by an arrow E in FIG. The liquid is introduced into the liquid circulation pump 6 through the pipe 93. Thereafter, as shown by arrow F in FIG. 2, the liquid is introduced into the heating heat exchanger 28b through the pipe 91, heated by the heating heat exchanger 28b, and heated in the same manner as described above. Circulate through the circulation passage 5.

なお、前記流量制御弁３８が開いている状態においては、管路９２を通った液体は、前記の如く、矢印Ｂに示したように暖房装置１０ａ側に導入されてから管路９５に導入される流れと、矢印Ｂ’に示すように、管路８９、液―液熱交換器７と管路９６を順に通って、管路９５に導入される流れとに分かれる。 In the state where the flow control valve 38 is open, the liquid that has passed through the pipe 92 is introduced to the heating apparatus 10a side as shown by the arrow B and then introduced into the pipe 95. And a flow introduced into the pipe 95 through the pipe 89, the liquid-liquid heat exchanger 7 and the pipe 96 in this order, as indicated by an arrow B ′.

また、燃焼制御手段９は、低温暖房装置１０ｂの運転を行うときには、通常、６０℃の液体を供給できるようにする。なお、このときも、バーナ１６の燃焼制御および燃焼ファン１８の回転制御等は、高温暖房装置１０ａの運転時と同様であり、暖房用熱交換器２８ｂからは適宜の温度（例えば約８０℃）の液体が導出されるが、燃焼制御手段９は、流量制御弁３８は開状態として、液体を、図２の矢印Ａ、Ｂ’、Ｃ、Ｄ、Ｅに示す順に通すことにより、管路９２、管路８９、液―液熱交換器７、管路９６、管路９５、暖房用熱交換器２８ａ、管路９４、シスターン装置１００、管路９３を順に通して、液体循環ポンプ６に導入するようにする。 In addition, the combustion control means 9 normally allows a liquid at 60 ° C. to be supplied when the low temperature heating apparatus 10b is operated. Also at this time, the combustion control of the burner 16 and the rotation control of the combustion fan 18 are the same as those during the operation of the high-temperature heating device 10a, and an appropriate temperature (for example, about 80 ° C.) from the heating heat exchanger 28b. However, the combustion control means 9 opens the flow rate control valve 38 and passes the liquid in the order shown by arrows A, B ′, C, D, E in FIG. , The pipe 89, the liquid-liquid heat exchanger 7, the pipe 96, the pipe 95, the heating heat exchanger 28a, the pipe 94, the cistern device 100, and the pipe 93 are sequentially introduced into the liquid circulation pump 6. To do.

そして、液体循環ポンプ６から吐出された液体が、熱動弁３７の開状態において、図２の矢印Ｇに示すように、管路９０，４５を通って低温暖房装置１０ｂ，１０ｃに導入されることで、暖房用熱交換器２８ｂから直接的に液体が導入されるよりも液体の温度が低くなる。低温暖房装置１０ｂ，１０ｃを通って放熱し、例えば４０℃以下の低温となった液体は、管路４４を通り、管路９５に導入され、前記と同様に、暖房用液体循環通路５を循環する。 Then, the liquid discharged from the liquid circulation pump 6 is introduced into the low-temperature heating devices 10b and 10c through the pipes 90 and 45 as shown by the arrow G in FIG. As a result, the temperature of the liquid is lower than when the liquid is directly introduced from the heating heat exchanger 28b. The liquid that radiates heat through the low-temperature heating devices 10b and 10c and has a low temperature of, for example, 40 ° C. or less passes through the pipe 44 and is introduced into the pipe 95, and circulates in the heating liquid circulation passage 5 in the same manner as described above. To do.

なお、低温暖房装置１０ｂ，１０ｃに導入される液体の温度調節は、暖房低温サーミスタ３６の検出温度に基づき、燃焼制御手段９の制御によって行われるものである。つまり、暖房装置１０ｂ，１０ｃの通常運転時には、暖房低温サーミスタ３６の検出温度が例えば６０℃になるように、低温能力切替熱動弁４７の開弁量を調節し、管路９４からシスターン装置１００に導入される液体に、管路９２を通る高温の（暖房熱交換器２８ｂによって例えば８０℃に高められた）液体が、管路９９，９８を通して混合される。 The temperature adjustment of the liquid introduced into the low-temperature heating devices 10 b and 10 c is performed by the control of the combustion control means 9 based on the temperature detected by the heating low-temperature thermistor 36. That is, during the normal operation of the heating devices 10b and 10c, the opening amount of the low temperature capability switching thermal valve 47 is adjusted so that the detected temperature of the heating low temperature thermistor 36 becomes, for example, 60 ° C. The liquid to be introduced into the liquid is mixed with hot liquid (e.g. raised to 80 [deg.] C. by the heating heat exchanger 28b) through line 92 through lines 99 and 98.

また、低温暖房装置１０ｂ，１０ｃの運転開始直後には、これらの低温暖房装置１０ｂ，１０ｃの内部通路５１，５２や管路４４，４５内の液体が冷えている状態であり、このように液体を冷たい状態から加熱する場合のホットダッシュ運転（コールドスタート）では、例えば１５分といった予め定められたホットダッシュ設定時間だけ、暖房低温サーミスタ３６の検出温度が例えば７０℃になるように低温能力切替熱動弁４７の開弁量の調節が行われ、管路９２を通る高温の液体が、管路９９，９８を通して混合される。 Further, immediately after the operation of the low-temperature heating devices 10b and 10c is started, the liquid in the internal passages 51 and 52 and the pipes 44 and 45 of these low-temperature heating devices 10b and 10c is in a cold state. In the hot dash operation (cold start) in the case of heating from a cold state, the low temperature capability switching heat is set so that the detected temperature of the heating low temperature thermistor 36 becomes, for example, 70 ° C. only for a predetermined hot dash setting time such as 15 minutes. The valve opening amount of the valve 47 is adjusted, and hot liquid passing through the pipe 92 is mixed through the pipes 99 and 98.

なお、低温暖房装置１０ｂ，１０ｃと高温暖房装置１０ａとが共に運転するときには、暖房用熱交換器２８ｂから約８０℃で液体が導出され、その液体が管路９２を通った後、矢印Ｂに示す方向と矢印Ｂ’に示す方向とに分かれて、それぞれ矢印Ｂ、Ｂ’に示すように通った後、管路９５に導入される。また、低温暖房装置１０ｂ，１０ｃのみが運転するときには、管路９２を通った後、矢印Ｂ’に示す方向に流れて管路９５に導入される。 When the low-temperature heating devices 10b and 10c and the high-temperature heating device 10a are operated together, the liquid is led out from the heating heat exchanger 28b at about 80 ° C. It is divided into the direction shown by arrow B and the direction shown by arrow B ′, and after passing as indicated by arrows B and B ′ respectively, it is introduced into the conduit 95. Further, when only the low-temperature heating devices 10b and 10c are operated, after passing through the pipe line 92, they flow in the direction indicated by the arrow B 'and are introduced into the pipe line 95.

図１に示した風呂設定温度入力操作部６３は、浴槽湯水の温度を設定する操作部であり、浴槽湯水温度は、例えば４０℃前後の適宜の値に設定される。設定された温度の情報は、燃焼制御手段９と利用可熱量算出手段１に加えられる。風呂自動スイッチ６４は、浴槽２７への自動湯張り動作のオンオフスイッチであり、風呂自動スイッチ６４のオンオフ信号は、いずれも燃焼制御手段９に加えられる。また、追い焚きスイッチ６０は、浴槽湯水の追い焚き単独動作のオンスイッチであり、追い焚きスイッチ６０のオン信号は、燃焼制御手段９に加えられる。なお、燃焼制御手段９により追い焚き動作が終了すると、追い焚きスイッチ６０は自動的にオフとなる。 The bath set temperature input operation unit 63 shown in FIG. 1 is an operation unit that sets the temperature of the bath water, and the bath water temperature is set to an appropriate value, for example, around 40 ° C. The set temperature information is added to the combustion control means 9 and the available heat quantity calculation means 1. The bath automatic switch 64 is an on / off switch for automatically filling the bathtub 27, and any on / off signal of the bath automatic switch 64 is applied to the combustion control means 9. Further, the reheating switch 60 is an on-switch for a single operation of reheating bath water, and an on signal of the reheating switch 60 is applied to the combustion control means 9. When the combustion control means 9 finishes the reheating operation, the reheating switch 60 is automatically turned off.

燃焼制御手段９は、風呂自動スイッチ６４のオン信号が加えられると、従来例と同様に、バーナ１７の燃焼によって熱交換器２９を通る水を加熱し、前記湯張り注水通路を通して湯を浴槽２７に注ぐ。この際、例えば図３に示すような、予めメモリ部４に与えられている浴槽の水位（Ｐ）と水量（Ｑ）との関係データ（Ｐ−Ｑデータ）と、水位センサ２２により検出される検出水位とに基づき、浴槽の設定水位まで注湯する。また、風呂温度センサ２１により検出される浴槽湯水温が風呂設定温度よりも低いときには、風呂設定温度となるように、浴槽湯水の追い焚き動作を行う。なお、燃焼制御手段９は、追い焚きスイッチ６０のオン信号が加えられたときも、風呂温度センサ２１により検出される浴槽湯水温が風呂設定温度となるように、浴槽湯水の追い焚き動作を行う。 When the ON signal of the bath automatic switch 64 is applied, the combustion control means 9 heats the water passing through the heat exchanger 29 by the combustion of the burner 17 as in the conventional example, and supplies hot water to the bathtub 27 through the hot water injection passage. Pour into. At this time, for example, as shown in FIG. 3, the relational data (PQ data) between the water level (P) of the bathtub and the amount of water (Q) given in advance to the memory unit 4 and the water level sensor 22 are detected. The hot water is poured up to the set water level of the bathtub based on the detected water level. Further, when the bath water temperature detected by the bath temperature sensor 21 is lower than the bath set temperature, the bath hot water reheating operation is performed so that the bath set temperature is reached. In addition, the combustion control means 9 performs the reheating operation of the bath hot water so that the bath water temperature detected by the bath temperature sensor 21 becomes the bath set temperature even when the ON signal of the reheating switch 60 is applied. .

このように、浴槽湯水の追い焚き動作を行う際、本実施例では、以下のような特徴的な追い焚き動作が行われる。つまり、本実施例でも、追い焚き動作は、前記の如く暖房用液体循環路５内の液体を液−液熱交換器７に通しながら浴槽湯水循環ポンプ２０を駆動させ、暖房用液体循環通路５を循環する液体と追い焚き循環通路１３を通る湯水とを液―液熱交換器７を介して熱交換することにより浴槽２７内の湯水の追い焚き動作を行うが、その際、本実施例では、燃焼制御手段９のシスターン熱利用追い焚き制御手段８が、風呂温度センサ２１の検出温度が風呂設定温度よりも低い予め定められる追い焚き停止温度となったときにバーナ１６の燃焼を停止して暖房用熱交換器２８の加熱を停止する。 As described above, when performing a bath water reheating operation, the following characteristic reheating operation is performed in the present embodiment. That is, also in the present embodiment, the reheating operation is performed by driving the bathtub hot water circulation pump 20 while passing the liquid in the heating liquid circulation path 5 through the liquid-liquid heat exchanger 7 as described above, and thereby heating the liquid circulation path 5 for heating. The hot water in the bathtub 27 is reheated by exchanging heat between the liquid circulating in the hot water and the hot water passing through the hot water circulation passage 13 via the liquid-liquid heat exchanger 7. In this embodiment, The cistern heat utilization reheating control means 8 of the combustion control means 9 stops the combustion of the burner 16 when the temperature detected by the bath temperature sensor 21 reaches a predetermined reheating stop temperature lower than the bath set temperature. Heating of the heat exchanger 28 for heating is stopped.

そして、暖房用熱交換器２８の加熱停止状態で、暖房用液体循環通路５内の液体の循環を継続させ（液体循環ポンプ６の駆動を継続させ）、追い焚き循環通路１３内の浴槽湯水の循環を継続させる（浴槽湯水循環ポンプ２０の駆動を継続させる）ことにより、暖房用熱交換器２８の加熱停止時以降にシスターン装置１００が保有するシスターン保有熱量を利用して、前記追い焚き停止温度から前記風呂設定温度までの浴槽湯水の加熱を行う。なお、前記追い焚き停止温度の設定方法は特に限定されるものではなく、適宜設定されるものであるが、本実施例では、利用可熱量算出手段１、浴槽水量推定手段２、追い焚き停止温度算出手段３の動作によって、以下のようにして設定される。 And in the heating stop state of the heating heat exchanger 28, the circulation of the liquid in the heating liquid circulation passage 5 is continued (the drive of the liquid circulation pump 6 is continued), and the bathtub hot water in the recirculation circulation passage 13 is continued. By continuing the circulation (the drive of the bathtub hot water circulation pump 20 is continued), the reheating stop temperature is obtained using the amount of heat held by the cistern device 100 after the heating heat exchanger 28 stops heating. The bath water is heated up to the bath set temperature. In addition, although the setting method of the reheating stop temperature is not particularly limited and is appropriately set, in this embodiment, the available heat amount calculating means 1, the bathtub water amount estimating means 2, the reheating stop temperature Depending on the operation of the calculation means 3, it is set as follows.

利用可保有熱量算出手段１は、シスターン装置１００内の液体の温度と、シスターン装置１００の容量と、風呂設定温度とに基づき、追い焚き動作における暖房用熱交換器２８の加熱停止時以降に利用できるシスターン装置１００の保有熱量を算出する。利用可保有熱量算出手段１は、追い焚き動作中の暖房低温サーミスタ３６の検出温度（Ｔｄ）を取り込み、その温度をシスターン装置１００に貯留される液体の温度として検出する。 The available stored heat amount calculation means 1 is used after the heating of the heat exchanger 28 for heating is stopped based on the temperature of the liquid in the cistern apparatus 100, the capacity of the cistern apparatus 100, and the bath set temperature. The amount of heat retained by the possible systern apparatus 100 is calculated. The available stored heat amount calculation means 1 takes in the detected temperature (Td) of the heating low-temperature thermistor 36 during the reheating operation, and detects the temperature as the temperature of the liquid stored in the cistern apparatus 100.

また、シスターン装置１００の容量をＳ、風呂設定温度をＴｓ、暖房用液体循環通路５を循環する液体と追い焚き循環通路１３を循環する浴槽湯水とを液―液熱交換器７によって熱交換するために必要な温度差（暖房用液体循環通路５を循環する液体の温度を浴槽湯水温よりも高くしなければならない温度差）をＴｕとすると、追い焚き動作における暖房用熱交換器２８の加熱停止時以降に利用できるシスターン装置１００の保有熱量を、式（１）により求めることができる。 Further, the capacity of the cistern apparatus 100 is S, the bath set temperature is Ts, and the liquid circulating in the heating liquid circulation passage 5 and the hot / cold bath water circulating in the recirculation circulation passage 13 are heat-exchanged by the liquid-liquid heat exchanger 7. Assuming that the temperature difference required for this (the temperature difference at which the temperature of the liquid circulating in the heating liquid circulation passage 5 must be higher than the bath water temperature) is Tu, heating of the heating heat exchanger 28 in the reheating operation The retained heat amount of the cistern apparatus 100 that can be used after the stop can be obtained by the equation (1).

（Ｔｄ−Ｔｓ−Ｔｕ）×Ｓ・・・（１） (Td−Ts−Tu) × S (1)

なお、Ｔｕは、例えば１０（℃）であり、一例として、暖房低温サーミスタ３６の検出温度Ｔｄが７０℃、シスターン装置１００の容量Ｓが１．５リットル、風呂設定温度Ｔｓが４０℃とすると、追い焚き動作における暖房用熱交換器２８の加熱停止時以降に利用できるシスターン装置１００の保有熱量は、３０（Ｋｃａｌ）となる。利用可保有熱量算出手段１は、この式（１）により求めた保有熱量値を追い焚き停止温度算出手段３に加える。 For example, Tu is 10 (° C.). As an example, when the detection temperature Td of the heating low temperature thermistor 36 is 70 ° C., the capacity S of the cistern device 100 is 1.5 liters, and the bath set temperature Ts is 40 ° C. The amount of heat held by the cistern apparatus 100 that can be used after the heating stop of the heating heat exchanger 28 in the reheating operation is 30 (Kcal). The available stored heat amount calculating means 1 adds the stored heat amount value obtained by the equation (1) to the reheating stop temperature calculating means 3.

浴槽湯水量推定手段２は、メモリ部４に格納されている前記Ｐ−Ｑデータと水位センサ２２により検出される追い焚き動作開始時の浴槽湯水の検出水位とに基づいて、浴槽湯水の水量を推定し、推定される水量値を追い焚き停止温度算出手段３に加える。なお、浴槽２７内に人が入っている場合には、その分だけ水位センサ２２による浴槽水位の検出値が高くなり、その値に基づいて推定される浴槽湯水の水量が多くなってしまうので、浴槽湯水量推定手段２は、例えば、水位センサ２２の検出水位を時々刻々とまたは予め定められた時間間隔毎に取り込んでおき、追い焚き動作開始時の水位が、その前に取り込んでおいた水位値に比べ、予め定められた人の入浴検知のための許容範囲を超えて高くなっているときには、人が浴槽２７に入ったと判断し、その前に取り込んでおいた水位値を追い焚き動作開始時の浴槽湯水の検出水位として浴槽湯水の水量を推定する。 The bathtub hot water amount estimation means 2 calculates the amount of bathtub hot water based on the PQ data stored in the memory unit 4 and the detected water level of the bathtub hot water at the start of the reheating operation detected by the water level sensor 22. The estimated water amount value is added to the reheating stop temperature calculation means 3. In addition, when there is a person in the bathtub 27, the detection value of the bathtub water level by the water level sensor 22 is increased by that much, and the amount of bathtub hot water estimated based on that value increases. For example, the bathtub hot water amount estimation means 2 takes in the water level detected by the water level sensor 22 every moment or every predetermined time interval, and the water level at the time of starting the chasing operation is taken in before that level. When the value is higher than the predetermined permissible range for detecting bathing by a person, it is determined that the person has entered the bathtub 27, and the water level value that has been captured before that is chased. The amount of bathtub water is estimated as the detected water level of the bathtub.

追い焚き停止温度算出手段３は、利用可熱量算出手段１により算出した熱量（保有熱量値）と、浴槽湯水量推定手段２により推定される水量と、予め与えられる演算用データとに基づいて追い焚き停止温度を求める。この演算用データとは、例えば、式（２）に示す演算式である。 The renewal stop temperature calculating means 3 performs a follow-up based on the heat amount (retained heat amount value) calculated by the available heat amount calculating means 1, the water amount estimated by the bathtub hot water amount estimating means 2, and the calculation data given in advance. Find the stop temperature. This calculation data is, for example, an arithmetic expression shown in Expression (2).

追い焚き停止温度＝風呂設定温度−（保有熱量値）÷浴槽水量・・・（２） Reheating stop temperature = bath set temperature-(retained heat value) ÷ bath water amount (2)

一例として、浴槽湯水量推定手段２によって推定された水量値が１５０リットルとすると、前記の如く風呂設定温度を４０℃とした場合、追い焚き停止温度は、４０−３０÷１５０＝３９．８（℃）となる。図４には、シスターン装置１００の保有熱量を利用した追い焚き動作時の熱移動状態を説明するため、シスターン装置１００内の液体の温度低下例と浴槽湯水の追い焚き停止温度から風呂設定温度までの温度上昇例とが、模式的なグラフにより示されている。 As an example, if the water volume value estimated by the bathtub hot water volume estimation means 2 is 150 liters, when the bath set temperature is 40 ° C. as described above, the reheating stop temperature is 40−30 ÷ 150 = 39.8 ( ° C). In FIG. 4, in order to explain the heat transfer state during the reheating operation using the amount of heat retained by the cistern apparatus 100, an example of the temperature drop of the liquid in the cistern apparatus 100 and the bath water reheating stop temperature to the bath set temperature A temperature rise example is shown by a schematic graph.

なお、風呂の自動湯張り動作について、これまでに様々な態様が提案されており、本実施例において、前記特徴的な追い焚き動作以外の詳細な動作は、これまでに提案されているものや今後提案されるものも含めて、様々な態様が適用できる。 Various modes have been proposed so far for automatic bathing operation of a bath, and in this embodiment, detailed operations other than the characteristic reheating operation have been proposed so far. Various aspects can be applied including those proposed in the future.

また、自動湯張り後、例えば４時間といった保温モードの機能の動作中には、燃焼制御手段９は、風呂温度センサ２１の検出温度を例えば予め定められている時間間隔毎に取り込み、その検出温度が予め設定される風呂設定温度より予め定められている許容範囲（例えば２℃）を超えて低下したときには、バーナ１６の燃焼制御を行って、暖房用熱交換器２８により暖房用液体循環通路５内の液体を加熱しながら循環させると共に、浴槽湯水循環ポンプ２０を駆動させ、追い焚き循環通路１３を通して浴槽湯水を循環させることによって、該浴槽湯水と暖房用液体循環通路５を循環する液体とを液−液熱交換器７を介して熱交換し、追い焚き動作を行う。 Further, during the operation of the function of the heat retention mode, for example, 4 hours after the automatic hot water filling, the combustion control means 9 takes in the detected temperature of the bath temperature sensor 21 at, for example, a predetermined time interval, and detects the detected temperature. When the temperature falls below a preset allowable range (for example, 2 ° C.) from a preset bath set temperature, combustion control of the burner 16 is performed, and the heating liquid circulation passage 5 is heated by the heating heat exchanger 28. The bath liquid is circulated while heating, and the bathtub hot water circulation pump 20 is driven to circulate the bathtub hot water through the recirculation circulation passage 13, whereby the bathtub hot water and the liquid circulating in the heating liquid circulation passage 5 are obtained. Heat is exchanged through the liquid-liquid heat exchanger 7 to perform a chasing operation.

ただし、本実施例では、この際も、前記と同様に風呂温度センサ２１の検出温度が追い焚き停止温度となるまでバーナ１６による暖房用熱交換器２８の加熱を行い、その暖房用熱交換器２８の加熱停止状態で暖房用液体循環通路５内の液体の循環と追い焚き循環通路１３内の浴槽湯水の循環とを継続させ、暖房用熱交換器２８の加熱停止時以降にシスターン装置１００が保有するシスターン保有熱量を利用して、追い焚き停止温度から風呂設定温度までの浴槽湯水の加熱を行う。 In this embodiment, however, the heating heat exchanger 28 is heated by the burner 16 until the temperature detected by the bath temperature sensor 21 reaches the reheating stop temperature, and the heating heat exchanger is used. In the heating stop state of 28, the circulation of the liquid in the heating liquid circulation passage 5 and the circulation of the bathtub hot water in the recirculation circulation passage 13 are continued. The bath water is heated from the reheating stop temperature to the bath set temperature using the amount of heat held by the Sistern.

なお、例えば、自動湯張り後に、保温モードの動作によって、表１に示す例のように３回追い焚き動作を行った場合に、各追い焚き動作時にそれぞれ、浴槽湯水温を高める温度に比例した分の熱量が必要とされ、その合計値は、表１の単位ＭＪ（メガジュール）をＫｃａｌ単位にすると、９８７Ｋｃａｌとなる。 For example, after the automatic hot water filling, when the reheating operation is performed three times as shown in the example shown in Table 1 by the operation in the heat retaining mode, the temperature is increased in proportion to the temperature at which the bath water temperature is increased at each reheating operation. The amount of heat is required, and the total value is 987 Kcal when the unit MJ (megajoule) in Table 1 is set to Kcal.

この際、従来のように、シスターン装置１００内の液体の保有熱量を利用せず、追い焚き動作時に風呂設定温度となるまで暖房用熱交換器２８の加熱を行ったとすると、シスターン装置１００内の保有熱量の自然放熱によるロス（損失）は、表２に示すように９０Ｋｃａｌとなる。なお、表２において、シスターン初温度とは追い焚き動作中に検出される暖房低温サーミスタ３６の検出温度（Ｔｄ）であり、熱交換有効温度とは、風呂設定温度Ｔｓに前記温度差Ｔｕを加えた値（Ｔｓ＋Ｔｕ）であり、前記式（１）において、温度Ｔｄから差し引く値である。 At this time, assuming that the heating heat exchanger 28 is heated until the bath set temperature is reached during the reheating operation without using the amount of heat held in the liquid in the cistern apparatus 100 as in the prior art, As shown in Table 2, the loss (loss) due to the natural heat dissipation of the retained heat amount is 90 Kcal. In Table 2, the cis-turn initial temperature is the detected temperature (Td) of the heating low temperature thermistor 36 detected during the reheating operation, and the heat exchange effective temperature is the bath set temperature Ts plus the temperature difference Tu. (Ts + Tu), which is a value subtracted from the temperature Td in the equation (1).

したがって、この例においては、従来のように浴槽湯水温が風呂設定温度となるまで暖房用熱交換器２８を加熱した場合には、１−９８７／（９８７＋９０）≒０．０８４となり、約８．４％の熱エネルギーロス（無駄）が発生していたが、本実施例では、このロスをなくすことができる。 Therefore, in this example, when the heating heat exchanger 28 is heated until the bath water temperature becomes the bath set temperature as in the prior art, 1−987 / (987 + 90) ≈0.084, which is about 8. Although 4% thermal energy loss (waste) has occurred, this loss can be eliminated in this embodiment.

なお、本発明は、前記実施例に限定されるものでなく、適宜設定されるものである。例えば、前記実施例では、給湯機能と風呂の追い焚き機能と暖房機能とを備えた複合装置としたが、給湯機能を有していない装置としてもよい。 In addition, this invention is not limited to the said Example, It sets suitably. For example, in the above-described embodiment, the composite apparatus is provided with a hot water supply function, a bath reheating function, and a heating function, but may be an apparatus that does not have a hot water supply function.

また、本発明の熱源装置は、例えば前記実施例で設けたガス燃焼を行うバーナの代わりに、石油燃焼用のバーナを設けてもよいし、電熱ヒータを設けてもよい。また、暖房用液体循環通路５内に循環させる液体は、水とは限らず、例えば不凍液等の他の液体としてもよい。 The heat source device of the present invention may be provided with a burner for oil combustion or an electric heater instead of the burner that performs gas combustion provided in the above-described embodiment, for example. Further, the liquid circulated in the heating liquid circulation passage 5 is not limited to water, and may be another liquid such as an antifreeze liquid.

本発明の熱源装置は、浴槽湯水の追い焚き時の運転における熱エネルギーの無駄を少なくできるので、省エネ化が可能となり、例えば家庭用の熱源装置として利用できる。 Since the heat source device of the present invention can reduce waste of heat energy in the operation of reheating bath water, energy can be saved, and can be used as a heat source device for home use, for example.

１利用可熱量算出手段
２浴槽水量推定手段
３追い焚き停止温度算出手段
４メモリ部
５暖房用液体循環通路
６液体循環ポンプ
７液−液熱交換器
１０暖房装置
１１制御装置
１３追い焚き循環通路
１６，１７バーナ
２０浴槽湯水循環ポンプ
２１風呂温度センサ
２２水位センサ
２８暖房用熱交換器
３３暖房高温サーミスタ
３６暖房低温サーミスタ
６０追い焚きスイッチ
６１経路切り替え制御手段
６２燃焼制御手段
６３暖房運転スイッチ
６４風呂自動スイッチ
６５追い焚きスイッチ DESCRIPTION OF SYMBOLS 1 Available heat amount calculation means 2 Bath water amount estimation means 3 Reheating stop temperature calculation means 4 Memory part 5 Heating liquid circulation passage 6 Liquid circulation pump 7 Liquid-liquid heat exchanger 10 Heating device 11 Control device 13 Reheating circulation passage 16 , 17 Burner 20 Bath hot water circulation pump 21 Bath temperature sensor 22 Water level sensor 28 Heating heat exchanger 33 Heating high temperature thermistor 36 Heating low temperature thermistor 60 Reheating switch 61 Path switching control means 62 Combustion control means 63 Heating operation switch 64 Bath automatic switch 65 Reap switch

Claims

A heating liquid circulation passage for circulating the liquid in the heating device and a recirculation circulation passage connected to the bathtub, the recirculation circulation passage being thermally connected to the heating liquid circulation passage via heat exchange means And the heating liquid circulation passage includes a liquid circulation pump that circulates the liquid in the heating liquid circulation passage, a heating heat exchanger that heats the liquid circulated by driving the liquid circulation pump, and a cistern. A hot water circulation pump for circulating hot water and a hot water temperature detecting means for detecting the temperature of the hot water, and a hot water hot water recirculation command. Receiving and circulating the heating liquid in the heating liquid circulation passage with the heating heat exchanger and circulating the bathtub hot water through the recirculation circulation passage, Heat is exchanged with the liquid circulating in the heating liquid circulation passage through the heat exchanging means, and a predetermined reheating stop temperature that is lower than a preset bath set temperature is detected by the bath water temperature detecting means. When heating of the heating heat exchanger is stopped, the circulation of the liquid in the heating liquid circulation passage and the circulation of the bathtub hot water in the recirculation circulation passage are continued. It has a cistern heat utilization replenishment control means for heating bath water from the retreat stop temperature to the bath set temperature by using the amount of heat retained by the cistern after the heat stop of the exchanger. Heat source device characterized.

It has a water level detection means for detecting the water level of the bathtub hot water and a liquid temperature detection means in the cistern for detecting the temperature of the liquid stored in the cistern apparatus, and is in a reheating operation detected by the liquid temperature detection means in the cistern. Based on the liquid detection temperature in the cistern, the capacity of the cistern device, and the bath setting temperature, the available retained heat amount calculation means for calculating the retained heat amount of the cistern device that can be used after the heating heat exchanger is stopped in the reheating operation. Bath water quantity estimation means for estimating the amount of bathtub hot water based on the relation data between the water level and water volume of the bathtub given in advance and the detected water level of the bathtub hot water at the start of the reheating operation detected by the water level detection means And the amount of water estimated by the bathtub hot water amount estimation means, the amount of retained heat calculated by the available retained heat amount calculation means, and the performance given in advance. Heat source apparatus according to claim 1, wherein a reheating stop temperature calculating means obtains the reheating stop temperature on the basis of the use data.