JPH11153350A - One-boiler two-channel hot-water supplier - Google Patents
One-boiler two-channel hot-water supplierInfo
- Publication number
- JPH11153350A JPH11153350A JP9337766A JP33776697A JPH11153350A JP H11153350 A JPH11153350 A JP H11153350A JP 9337766 A JP9337766 A JP 9337766A JP 33776697 A JP33776697 A JP 33776697A JP H11153350 A JPH11153350 A JP H11153350A
- Authority
- JP
- Japan
- Prior art keywords
- water supply
- hot water
- hot
- reheating
- supply side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 783
- 238000003303 reheating Methods 0.000 claims abstract description 246
- 238000002485 combustion reaction Methods 0.000 claims abstract description 201
- 238000010438 heat treatment Methods 0.000 claims description 79
- 230000005856 abnormality Effects 0.000 claims description 59
- 238000001514 detection method Methods 0.000 claims description 16
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 208000019901 Anxiety disease Diseases 0.000 abstract description 3
- 230000036506 anxiety Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 238000013500 data storage Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 239000008236 heating water Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000004397 blinking Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Landscapes
- Control For Baths (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、給湯熱交換器と追
い焚き熱交換器等の非給湯側熱交換器が一体化され、そ
の一体化した熱交換器を共通のバーナーで加熱する一缶
二水路給湯器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single can in which a hot water supply heat exchanger and a non-hot water supply side heat exchanger such as a reheating heat exchanger are integrated, and the integrated heat exchanger is heated by a common burner. It relates to a two-channel water heater.
【０００２】[0002]
【従来の技術】図７には本出願人らが開発している一缶
二水路給湯器としての一缶二水路風呂給湯器のシステム
構成例が示されている。同図において、この一缶二水路
風呂給湯器（器具）は燃焼室１を有し、この燃焼室１に
はバーナー２が配設され、このバーナー２の上方には給
湯熱交換器３と非給湯側熱交換器としての追い焚き熱交
換器４が設けられている。これら給湯熱交換器３と追い
焚き熱交換器４は一体化されて配設されている。すなわ
ち、複数の共通のフィンプレート５に給湯側の管路を貫
通装着して給湯熱交換器３と成し、同じくフィンプレー
ト５に追い焚き側の管路を貫通装着して追い焚き熱交換
器４と成しており、上記バーナー２は給湯熱交換器３と
追い焚き熱交換器４を共に加熱する構成になっている。2. Description of the Related Art FIG. 7 shows an example of a system configuration of a one-can two-channel water heater as a one-can two-channel water heater developed by the present applicants. In this figure, this one-can two-channel bath water heater (apparatus) has a combustion chamber 1, in which a burner 2 is disposed. Above the burner 2, a hot water supply heat exchanger 3 A reheating heat exchanger 4 as a hot water supply side heat exchanger is provided. The hot water supply heat exchanger 3 and the reheating heat exchanger 4 are disposed integrally. In other words, a hot water supply heat exchanger 3 is formed by penetrating a plurality of common fin plates 5 with a hot water supply-side pipe, and a reheating heat exchanger is similarly mounted by penetrating a fin plate 5 with a refueling-side pipe. The burner 2 heats both the hot water supply heat exchanger 3 and the reheating heat exchanger 4.
【０００３】上記バーナー２の下方側の燃焼室１は給気
通路６に連通され、この給気通路６には燃焼ファン７が
組み込まれており、燃焼ファン７の回転駆動により外部
から給気通路６を介してバーナー２へ空気が送り込まれ
ると共に、バーナー２の燃焼により生じた排気ガスがバ
ーナー２の上方の燃焼室１に連通する排気通路９から外
部へ排出される。The combustion chamber 1 below the burner 2 communicates with an air supply passage 6, and a combustion fan 7 is incorporated in the air supply passage 6. Air is sent to the burner 2 via the burner 6, and exhaust gas generated by combustion of the burner 2 is discharged to the outside from an exhaust passage 9 communicating with the combustion chamber 1 above the burner 2.
【０００４】上記バーナー２のガス導入口にはガスノズ
ル１９が対向配設され、このガスノズル１９には燃料ガ
スを導入するためのガス供給通路８が接続されており、
このガス供給通路８により導かれた燃料ガスはガスノズ
ル１９を介してバーナー２に供給される。また、上記ガ
ス供給通路８には通路の開閉を行う電磁弁１０，１１
ａ，１１ｂと、ガスの供給量を開弁量により制御する比
例弁１２とが介設されている。[0004] A gas nozzle 19 is provided opposite to the gas inlet of the burner 2, and the gas nozzle 19 is connected to a gas supply passage 8 for introducing a fuel gas.
The fuel gas guided by the gas supply passage 8 is supplied to the burner 2 via a gas nozzle 19. The gas supply passage 8 has solenoid valves 10 and 11 for opening and closing the passage.
a, 11b, and a proportional valve 12 for controlling the gas supply amount based on the valve opening amount.
【０００５】前記給湯熱交換器３の入側には給水通路１
３の一端側が接続され、給湯熱交換器３の出側には給湯
通路１４の一端側が接続されており、上記給水通路１３
の他端側は外部配管を介して水供給源に接続され、前記
給湯通路１４の他端側は外部配管を介して台所等の所望
の給湯場所に導かれている。また、上記給湯熱交換器３
の入側の給水通路１３と出側の給湯通路１４を短絡する
バイパス通路１５が設けられており、上記バイパス通路
１５には通路の開閉を行うバイパス弁１６が介設されて
いる。[0005] A water supply passage 1 is provided on the inlet side of the hot water supply heat exchanger 3.
3 is connected to one end of a hot water supply heat exchanger 3, and one end of a hot water supply passage 14 is connected to the outlet of the hot water supply heat exchanger 3.
Is connected to a water supply source through an external pipe, and the other end of the hot water supply passage 14 is guided to a desired hot water supply place such as a kitchen through the external pipe. The hot water supply heat exchanger 3
A bypass passage 15 for short-circuiting the inlet-side water supply passage 13 and the outlet-side hot water supply passage 14 is provided. The bypass passage 15 is provided with a bypass valve 16 for opening and closing the passage.
【０００６】前記追い焚き熱交換器４の入側には管路１
８の一端側が接続され、この管路１８の他端側は循環ポ
ンプ２０の吐出口に接続されており、循環ポンプ２０の
吸入口には戻り管２１の一端側が接続され、戻り管２１
の他端側は浴槽２２に連接されている。また、追い焚き
熱交換器４の出側には管路２３の一端側が接続されてお
り、この管路２３の他端側は前記浴槽２２に連接されて
いる。上記戻り管２１と循環ポンプ２０と管路１８と追
い焚き熱交換器４と管路２３により非給湯側循環通路と
しての追い焚き循環通路２４が構成される。A line 1 is provided on the inlet side of the reheater 4.
8 is connected, the other end of the conduit 18 is connected to the discharge port of the circulation pump 20, one end of the return pipe 21 is connected to the suction port of the circulation pump 20, and the return pipe 21
Is connected to the bathtub 22 at the other end. One end of a pipe 23 is connected to the outlet side of the reheater 4, and the other end of the pipe 23 is connected to the bathtub 22. The return pipe 21, the circulation pump 20, the pipe 18, the reheating heat exchanger 4 and the pipe 23 constitute a reheating circulation path 24 as a non-hot water supply side circulation path.
【０００７】上記追い焚き循環通路２４の管路１８と前
記給湯通路１４は湯張り通路２５により連通されてお
り、この湯張り通路２５には通路の開閉を制御する注湯
制御弁２６と、浴槽２２の水位を検出する水位センサ２
８とが設けられている。The pipe line 18 of the additional heating circulation passage 24 and the hot water supply passage 14 are communicated by a hot water supply passage 25. The hot water supply passage 25 has a pouring control valve 26 for controlling opening and closing of the passage, and a bathtub. Water level sensor 2 for detecting the water level of 22
8 are provided.
【０００８】なお、図中に示す３０は燃焼室１内の風量
を検出する風量センサであり、３１は給水通路１３に設
けられて給水の流量を検出する水量センサであり、３２
は給水通路１３の水の温度を検出する入水温度センサで
あり、３４は給湯通路１４に設けられて通水流量を制御
する流量制御弁であり、３５は給湯通路１４に設けられ
て給湯が行われていることを水流により検出する給湯確
認スイッチであり、３６は追い焚き循環通路２４の水流
の有無を検出する流水スイッチであり、３７は追い焚き
循環通路２４の湯水温を浴槽湯水の温度（風呂温度）と
して検出する風呂温度センサであり、３８は給湯熱交換
器３で作り出された湯の温度（給湯の出湯温度）を検出
する給湯出湯温度検出手段としての出湯温度センサであ
る。Reference numeral 30 shown in the figure is an air volume sensor for detecting the air volume in the combustion chamber 1, 31 is a water volume sensor provided in the water supply passage 13 for detecting the flow rate of the water supply, and 32
Reference numeral 34 denotes an incoming water temperature sensor for detecting the temperature of water in the water supply passage 13, reference numeral 34 denotes a flow control valve provided in the hot water supply passage 14 to control the flow rate of water, and reference numeral 35 denotes a flow control valve provided in the hot water supply passage 14 to supply hot water. A hot water supply confirmation switch for detecting the presence or absence of a water flow in the additional heating circulation passage 24, and a hot water supply switch 37 for detecting the presence or absence of a water flow in the additional heating circulation passage 24. A bath temperature sensor 38 detects the temperature of the hot water produced by the hot-water supply heat exchanger 3 (bath temperature of the hot water).
【０００９】この一缶二水路風呂給湯器には制御装置４
０が設けられており、この制御装置４０にはリモコン４
１が接続されている。このリモコン４１には給湯温度を
設定するための給湯温度設定手段や、浴槽２２の風呂の
温度を設定する風呂温度設定手段や、浴槽２２の湯水の
水位を設定する風呂水位設定手段等が設けられている。[0009] This one-can-two-channel water heater has a control device 4
0 is provided, and the remote controller 4
1 is connected. The remote controller 41 is provided with a hot water supply temperature setting means for setting a hot water supply temperature, a bath temperature setting means for setting a bath temperature of the bathtub 22, a bath water level setting means for setting a water level of hot water in the bathtub 22, and the like. ing.
【００１０】上記制御装置４０は各種センサのセンサ出
力信号やリモコン４１の情報を取り込み、それら情報と
予め与えられているシーケンスプログラムに従って、給
湯運転や、湯張り運転や、追い焚き運転等の各種の器具
運転の動作を次のように制御する。The control device 40 takes in sensor output signals of various sensors and information of the remote controller 41, and performs various operations such as hot water supply operation, hot water filling operation, reheating operation and the like according to the information and a sequence program given in advance. The operation of the appliance operation is controlled as follows.
【００１１】例えば、台所等に導かれた給湯通路の水栓
が開けられ、水供給源から給水通路１３に水が流れ込ん
で水量センサ３１が給水通路１３の通水を検出すると、
器具は給湯運転を開始する。まず、燃焼ファン７の回転
駆動を開始させ、電磁弁１１ａ，１１ｂの両方又はどち
らか一方と電磁弁１０を開動作させガス供給通路８を通
してバーナー２に燃料ガスを供給し、図示されていない
点着火手段によりバーナー２の点着火を行い燃焼を開始
させる。For example, when the faucet of the hot water supply passage led to the kitchen or the like is opened, water flows from the water supply source into the water supply passage 13 and the water amount sensor 31 detects the flow of water through the water supply passage 13.
The appliance starts hot water supply operation. First, the rotational drive of the combustion fan 7 is started to open the solenoid valve 10 and / or one or both of the solenoid valves 11a and 11b, thereby supplying fuel gas to the burner 2 through the gas supply passage 8 to a point not shown. The burner 2 is ignited by the ignition means to start combustion.
【００１２】そして、給湯湯温が前記給湯温度設定手段
に設定されている給湯設定温度となるように比例弁１２
の開弁量を制御して（バーナー２への供給ガス量を制御
して）バーナー２の燃焼能力を制御し、給湯熱交換器３
の通水をバーナー２の燃焼火炎により加熱して設定温度
の湯を作り出し、この湯を給湯通路１４を通して給湯場
所に供給する。The proportional valve 12 is controlled so that the hot water temperature becomes the hot water set temperature set in the hot water temperature setting means.
By controlling the valve opening amount (by controlling the amount of gas supplied to the burner 2), the combustion capacity of the burner 2 is controlled, and the hot water supply heat exchanger 3 is controlled.
Is heated by the combustion flame of the burner 2 to produce hot water of a set temperature, and this hot water is supplied to a hot water supply place through a hot water supply passage 14.
【００１３】湯の使用が終了して水栓が閉められると、
給湯熱交換器３への通水が停止し、水量センサ３１が給
水通路１３の通水を検知しなくなったときに、電磁弁１
０を閉じてバーナー２の燃焼を停止させる。その後、予
め定められたポストパージ期間（例えば、５分間）が経
過したときに、燃焼ファン７の回転駆動を停止して給湯
運転を終了し次の給湯に備える。When the use of hot water is finished and the faucet is closed,
When the water supply to the hot water supply heat exchanger 3 is stopped and the water amount sensor 31 stops detecting the water supply through the water supply passage 13, the solenoid valve 1
0 is closed to stop the burner 2 from burning. After that, when a predetermined post-purge period (for example, 5 minutes) has elapsed, the rotational drive of the combustion fan 7 is stopped to end the hot water supply operation and prepare for the next hot water supply.
【００１４】湯張り運転を行うときには、例えば、注湯
制御弁２６を開弁し、この注湯制御弁２６の開弁動作に
より水供給源から給水通路１３に水が流れ込んで水量セ
ンサ３１が給水通路１３の通水を検知すると、上記給湯
運転と同様にバーナー２の燃焼を開始させる。When performing the filling operation, for example, the pouring control valve 26 is opened, and water flows from the water supply source into the water supply passage 13 by the opening operation of the pouring control valve 26, and the water amount sensor 31 supplies water. When the passage of water through the passage 13 is detected, the combustion of the burner 2 is started in the same manner as in the hot water supply operation.
【００１５】このバーナー２の燃焼火炎により給湯熱交
換器３で作り出された湯は給湯通路１４と湯張り通路２
５を順に介して追い焚き循環通路２４に送り込まれ、追
い焚き循環通路２４に流れ込んだ湯は戻り管２１を通る
経路と追い焚き熱交換器４を通る経路との２経路で浴槽
２２に落とし込まれる。そして、水位センサ２８が検出
する浴槽２２の水位がリモコン４１に設定されている設
定水位に達したときに、注湯制御弁２６を閉じ、電磁弁
１０を閉じてバーナー２の燃焼を停止させ、湯張り運転
を終了する。Hot water produced in the hot water supply heat exchanger 3 by the combustion flame of the burner 2 is supplied to the hot water supply passage 14 and the hot water supply passage 2.
5, the hot water which has been sent into the reheating circulation passage 24 through the reheating circulation passage 24 is dropped into the bathtub 22 in two paths, a path passing through the return pipe 21 and a path passing through the reheating heat exchanger 4. It is. When the water level in the bathtub 22 detected by the water level sensor 28 reaches the set water level set in the remote controller 41, the pouring control valve 26 is closed, the solenoid valve 10 is closed, and the combustion of the burner 2 is stopped. Terminate the hot water operation.
【００１６】追い焚き運転を行うときには、例えば、図
８に示すようなフローチャートに基づいて追い焚き運転
を行う。すなわち、図８のステップ２０１で、リモコン
４１などに設けられている追い焚きスイッチがオンされ
て、給湯器に追い焚き指示が与えられると、ステップ２
０２で、循環ポンプ２０をオン駆動させて浴槽２２内の
湯水を追い焚き循環通路２４を通して循環させ、ステッ
プ２０３で、流水スイッチ３６によって追い焚き循環通
路２４の湯水の流れを検知した後、ステップ２０４で、
バーナー２の着火を行い（着火トライ）、バーナー２の
燃焼を開始させる。When the reheating operation is performed, the reheating operation is performed based on, for example, a flowchart shown in FIG. That is, in step 201 of FIG. 8, when the reheating switch provided on the remote controller 41 or the like is turned on and a reheating instruction is given to the water heater, step 2 is performed.
In step 02, the circulation pump 20 is turned on to circulate the hot water in the bathtub 22 through the additional heating circulation passage 24. In step 203, after the flow of the hot water in the additional heating circulation passage 24 is detected by the flowing water switch 36, step 204 is performed. so,
The burner 2 is ignited (ignition try), and the combustion of the burner 2 is started.
【００１７】そして、ステップ２０５で、バーナー２の
近傍に設けられているフレームロット電極がオンしたか
否かの判断を行うことによりバーナー２の燃焼が開始さ
れたことを確認し、フレームロット電極がオンしたとき
には、ステップ２０６で、リモコン４１などに設けられ
ている追い焚き燃焼ランプをオンさせる。すなわち、追
い焚き燃焼ランプの点灯等による追い焚き報知動作を開
始させる。また、バーナー２の燃焼開始によって、バー
ナー２の燃焼火炎により追い焚き熱交換器４の循環湯水
を加熱して追い焚きを行い、風呂温度センサ３７により
検出される風呂温度が前記風呂温度設定手段により設定
されている設定温度に達したときに、ステップ２０７
で、追い焚き運転が終了したと判断し、バーナー２の燃
焼を停止させるとともに、ステップ２０８で、前記追い
焚き燃焼ランプをオフ（追い焚き報知動作停止）させ、
循環ポンプ２０をオフ（停止）させる。In step 205, it is determined whether or not the flame lot electrode provided in the vicinity of the burner 2 has been turned on to confirm that the burner 2 has started burning. When it is turned on, at step 206, the reheating combustion lamp provided on the remote controller 41 or the like is turned on. That is, a reheating notification operation is started by lighting a reheating combustion lamp or the like. Further, when the combustion of the burner 2 starts, the circulating hot and cold water of the reheating heat exchanger 4 is heated by the combustion flame of the burner 2 to perform reheating, and the bath temperature detected by the bath temperature sensor 37 is set by the bath temperature setting means. When the set temperature is reached, step 207
Then, it is determined that the reheating operation has ended, the combustion of the burner 2 is stopped, and in step 208, the reheating combustion lamp is turned off (the reheating notification operation is stopped).
The circulation pump 20 is turned off (stopped).
【００１８】なお、前記図８のステップ２０３で、流水
スイッチ３６がオンせず、追い焚き循環通路２４の湯水
の流れが検知されないときには、ステップ２１１に進
み、ステップ２０２から１０分経過したときには、ステ
ップ２１２で循環ポンプ２０をオフする。また、前記ス
テップ２０５で、フレームロット電極がオンしないとき
には、ステップ２０９に進み、ステップ２０４から５秒
経過したときには、バーナー２の点着火動作を行ったに
もかかわらず、バーナー２の燃焼開始が行われないた
め、給湯器の故障と判断し、ステップ２１０でエラー報
知を行う。In step 203 of FIG. 8, when the water switch 36 is not turned on and the flow of hot water in the reheating circulation passage 24 is not detected, the process proceeds to step 211. When 10 minutes have passed from step 202, the process proceeds to step 211. At 212, the circulation pump 20 is turned off. If the flame lot electrode is not turned on in step 205, the process proceeds to step 209. If 5 seconds have passed since step 204, the burner 2 starts burning even though the burner 2 has performed the spot ignition operation. Therefore, it is determined that the water heater has failed, and an error is notified in step 210.
【００１９】従来の一缶二水路風呂給湯器においては、
以上のようにして給湯や湯張りや追い焚きの各運転が行
われ、前記の如く、一缶二水路風呂給湯器は、一体化さ
れた給湯熱交換器３と追い焚き熱交換器４を共通のバー
ナー２を用いて加熱する方式であるので、別体に設けら
れた給湯熱交換器と追い焚き熱交換器をそれぞれ別個の
バーナーを用いて燃焼加熱する方式に比べて、装置構成
の簡易化が図れ、これに伴い、装置の小型化とコストの
低減が図れることになる。In a conventional one-can two-channel bath water heater,
Each operation of hot water supply, hot water filling, and reheating is performed as described above, and as described above, the one-can, two-channel bath water heater uses the integrated hot water supply heat exchanger 3 and the reheating heat exchanger 4 in common. Since the heating method is performed using the burner 2 of the above, the apparatus configuration is simplified as compared with the method of burning and heating the hot water supply heat exchanger and the reheating heat exchanger provided separately from each other using separate burners. Accordingly, the size and cost of the device can be reduced.
【００２０】また、図９には、一缶二水路給湯器として
の給湯暖房機の一例が示されており、同図において、図
７の一缶二水路風呂給湯器と同一名称部分には同一符号
が付してある。また、図中、５７は非給湯側熱交換器と
しての暖房用熱交換器を示しており、５２は暖房オン・
オフバルブ、５３は放熱器、５４はファン、５５はシス
ターンタンク、５６はバイパス通路をそれぞれ示してい
る。暖房用循環通路５１を循環する熱媒体としては、例
えば、エチレングリコールとプロピレングリコールに水
を加えたものが用いられる。FIG. 9 shows an example of a hot water supply / room heater as a one-can two-channel water heater. In FIG. 9, the same parts as those shown in FIG. The code is attached. In the figure, reference numeral 57 denotes a heating heat exchanger as a non-hot water supply side heat exchanger, and 52 denotes a heating ON / OFF heat exchanger.
An off valve, 53 denotes a radiator, 54 denotes a fan, 55 denotes a cistern tank, and 56 denotes a bypass passage. As the heat medium circulating in the heating circulation passage 51, for example, a mixture of ethylene glycol and propylene glycol with water is used.
【００２１】[0021]
【発明が解決しようとする課題】ところで、従来の一缶
二水路風呂給湯器においては、前記の如く、追い焚き運
転を行うときには、循環ポンプ２０の駆動によって生じ
る追い焚き循環通路２４の湯水の流れを流水スイッチ３
６によって検知した後、バーナー２の燃焼を開始させ、
バーナー２の燃焼開始が確認されたときに追い焚き燃焼
ランプをオンさせているため、循環ポンプ２０をオンさ
せてから直ちに流水スイッチ３６により追い焚き循環通
路２４の湯水の流れが検知されないときには、バーナー
２の燃焼が開始されず、追い焚き燃焼ランプの追い焚き
報知動作も開始されないことになる。そのため、例えば
追い焚き循環通路２４内が完全には湯水で満たされてお
らず、循環ポンプ２０の駆動開始から流水スイッチ３６
により流水検知が行われるまでに時間がかかったりする
と、給湯器の利用者が追い焚きスイッチをオンしたにも
かかわらず、追い焚き燃焼ランプが作動しないことから
給湯器の利用者は給湯器に故障が生じてしまったと誤判
断することになり、利用者に不安を与えてしまうといっ
た問題があった。By the way, in the conventional one-can, two-channel bath water heater, as described above, when the reheating operation is performed, the flow of hot and cold water in the reheating circulation passage 24 caused by the driving of the circulation pump 20. The running water switch 3
6, the combustion of the burner 2 is started,
Since the reburning combustion lamp is turned on when it is confirmed that the burner 2 has started burning, if the flow of the hot water in the reburning circulation passage 24 is not detected by the water switch 36 immediately after the circulation pump 20 is turned on, the burner is turned on. The combustion of No. 2 is not started, and the reheating notification operation of the reheating combustion lamp is not started. Therefore, for example, the inside of the reheating circulation passage 24 is not completely filled with hot water, and the running water switch 36
If it takes a long time for the water heater to be detected, the water heater user will fail because the water heater will not operate even though the water heater user turns on the reheating switch. However, there is a problem that the user is erroneously determined to have occurred, giving a user anxiety.
【００２２】本発明は上記課題を解決するために成され
たものであり、その目的は、追い焚き燃焼運転等の非給
湯側運転の異常が生じていないときに給湯器の故障など
の誤判断を招くようなことのない、利用者が安心して利
用することができる一缶二水路給湯器を提供することに
ある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method for erroneously determining a failure of a water heater when no abnormality occurs in a non-hot water supply side operation such as a reheating combustion operation. It is an object of the present invention to provide a one-can-two-channel water heater that can be used by a user without causing any trouble.
【００２３】[0023]
【課題を解決するための手段】上記目的を達成するため
に、本発明は次のような構成をもって課題を解決するた
めの手段としている。すなわち、本第１の発明は、給水
通路から導かれた水を加熱し給湯通路に湯を供給する給
湯熱交換器と、循環ポンプを備えた非給湯側循環通路に
組み込まれ該非給湯側循環通路を循環する熱媒体を加熱
する非給湯側熱交換器とを有し、上記給湯熱交換器と非
給湯側熱交換器は一体化され、上記給湯熱交換器と非給
湯熱交換器を共通に加熱するバーナが設けられている一
缶二水路給湯器において、非給湯側運転指示が与えられ
たときに上記循環ポンプを駆動させるとともに直ちに非
給湯側燃焼ランプを報知動作開始させる非給湯側ランプ
作動手段が設けられている構成をもって課題を解決する
ための手段としている。In order to achieve the above-mentioned object, the present invention has the following structure to solve the problem. That is, the first invention is a hot water supply heat exchanger that heats water guided from a water supply passage and supplies hot water to the hot water supply passage, and the non-hot water supply side circulation passage that is incorporated in a non-hot water supply side circulation passage provided with a circulation pump. A non-hot water supply side heat exchanger for heating the heat medium circulating through the heat exchanger, wherein the hot water supply heat exchanger and the non-hot water supply side heat exchanger are integrated, and the hot water supply heat exchanger and the non-hot water supply heat exchanger are shared. In a one-can two-channel water heater provided with a burner to be heated, a non-hot-water supply lamp operation for driving the circulating pump and immediately informing a non-hot-water supply combustion lamp when a non-hot-water supply side operation instruction is given. The configuration provided with the means is a means for solving the problem.
【００２４】また、本第２の発明は、給水通路から導か
れた水を加熱し給湯通路に湯を供給する給湯熱交換器
と、循環ポンプを備えた非給湯側循環通路に組み込まれ
該非給湯側循環通路を循環する熱媒体を加熱する非給湯
側熱交換器とを有し、上記給湯熱交換器と非給湯側熱交
換器は一体化され、上記給湯熱交換器と非給湯熱交換器
を共通に加熱するバーナが設けられている一缶二水路給
湯器において、非給湯側運転指示が与えられたときに循
環ポンプを駆動させるとともに非給湯側循環通路の熱媒
体の流れを検知せずにバーナー燃焼運転を直ちに開始さ
せる非給湯側燃焼強制開始手段を有し、非給湯側ランプ
作動手段は、非給湯側運転指示が与えられてからバーナ
ーの燃焼が確認されたときに直ちに非給湯側燃焼ランプ
を報知動作開始させる構成をもって課題を解決するため
の手段としている。Further, the second invention is a hot water supply heat exchanger for heating water guided from the water supply passage and supplying hot water to the hot water supply passage, and a non-hot water supply circulation passage incorporated in a non-hot water supply side circulation passage provided with a circulation pump. A non-hot water supply side heat exchanger that heats a heat medium circulating in the side circulation passage, wherein the hot water supply heat exchanger and the non-hot water supply side heat exchanger are integrated, and the hot water supply heat exchanger and the non-hot water supply heat exchanger are integrated. In a one-can two-channel water heater provided with a burner that commonly heats, when a non-hot water supply side operation instruction is given, the circulation pump is driven and the flow of the heat medium in the non-hot water supply side circulation passage is not detected. The non-hot-water supply forcible start means for immediately starting the burner combustion operation is provided, and the non-hot-water supply lamp operating means is provided with the non-hot-water supply side immediately when the burner combustion is confirmed after the non-hot-water supply operation instruction is given. Start the notification operation of the combustion lamp And a means for solving the problems with the configuration.
【００２５】さらに、本第３の発明は、上記本第１の発
明又は第２の発明の構成に加え、給湯熱交換器の湯温を
検出する給湯熱交換器湯温検出手段と、給湯が行われず
非給湯側運転のみを行う非給湯側単独運転中に該給湯熱
交換器湯温検出手段により検出される給湯熱交換器の湯
温がバーナー燃焼を停止させる設定温度以上になったと
きにはバーナーの燃焼を停止させ、上記給湯熱交換器の
湯温がバーナー燃焼を再開させる設定温度以下になった
ときにはバーナーの燃焼を再開させる非給湯側単独運転
燃焼制御部とが設けられている構成をもって課題を解決
するための手段としている。Further, in the third invention, in addition to the configuration of the first invention or the second invention, the hot water supply heat exchanger hot water temperature detecting means for detecting the hot water temperature of the hot water supply heat exchanger, When the hot water temperature of the hot water supply heat exchanger detected by the hot water supply heat exchanger hot water temperature detecting means during the non-hot water supply side alone operation in which only the non-hot water supply side operation is performed is higher than the set temperature for stopping the burner combustion, the burner And a non-hot-water-supply-side independent operation combustion control unit that restarts burner combustion when the hot water temperature of the hot water supply heat exchanger falls below a set temperature for restarting burner combustion. Means to solve the problem.
【００２６】さらに、本第４の発明は、上記本第１の発
明又は第２の発明の構成に加え、給湯熱交換器の湯温を
検出する給湯熱交換器湯温検出手段と、給湯が行われず
非給湯側運転のみを行う非給湯側単独運転中に該給湯熱
交換器湯温検出手段により検出される給湯熱交換器の湯
温がバーナー燃焼能力を低下させる設定温度以上になっ
たときにはバーナーの燃焼能力を低下させ、上記給湯熱
交換器の湯温がバーナー燃焼能力を増加させる設定温度
以下になったときにはバーナーの燃焼能力を増加させる
非給湯側単独運転燃焼制御部とが設けられている構成を
もって課題を解決するための手段としている。Further, in the fourth invention, in addition to the configuration of the first invention or the second invention, a hot water supply heat exchanger hot water temperature detecting means for detecting a hot water temperature of the hot water supply heat exchanger, When the hot water temperature of the hot water supply heat exchanger detected by the hot water supply heat exchanger hot water temperature detecting means during the non-hot water supply side alone operation that is not performed but only the non-hot water supply side operation becomes equal to or higher than the set temperature that reduces the burner combustion capacity A non-hot-water-supply-side independent operation combustion control unit for reducing the combustion capacity of the burner and increasing the combustion capacity of the burner when the hot water temperature of the hot water supply heat exchanger becomes equal to or lower than a set temperature at which the burner combustion capacity is increased; It is a means to solve the problem with a certain configuration.
【００２７】さらに、本第５の発明は、上記本第３の発
明又は第４の発明の構成に加え、非給湯側単独運転中に
給湯熱交換器湯温検出手段により検出される給湯熱交換
器の湯温データに基づいて非給湯側循環通路の熱媒体の
流れを検知する非給湯側流れ検知手段が設けられてお
り、非給湯側燃焼ランプの報知動作開始から予め定めら
れた時間内に該非給湯側流れ検知手段によって非給湯側
循環通路の熱媒体の流れが検知されなかったときには非
給湯側燃焼ランプの報知動作を停止させる非給湯側ラン
プ停止手段が設けられている構成をもって課題を解決す
るための手段としている。Further, in the fifth invention, in addition to the constitution of the third invention or the fourth invention, the hot water supply heat exchange detected by the hot water supply heat exchanger hot water temperature detecting means during the non-hot water supply side alone operation. A non-hot water supply side flow detecting means for detecting the flow of the heat medium in the non-hot water supply side circulation passage based on the hot water temperature data of the heater is provided, and within a predetermined time from the start of the notification operation of the non-hot water supply side combustion lamp. The present invention solves the problem by providing a non-hot water supply side lamp stopping means for stopping a notification operation of a non-hot water supply side combustion lamp when the flow of the heat medium in the non-hot water supply side circulation passage is not detected by the non-hot water supply side flow detecting means. And means for doing so.
【００２８】さらに、本第６の発明は、上記本第１の発
明乃至第５の発明の何れか一つの構成に加え、給湯の出
湯温度を検出する給湯出湯温度検出手段を有し、給湯運
転中に非給湯側運転指示が与えられたときに該給湯出湯
温度検出手段によって検出される給湯出湯温度変化に基
づいて非給湯側循環通路の熱媒体の流れを検知する非給
湯側流れ検知手段が設けられており、非給湯側燃焼ラン
プの報知動作開始から予め定められた時間内に該非給湯
側流れ検知手段によって非給湯側循環通路の熱媒体の流
れが検知されなかったときには非給湯側燃焼ランプの報
知動作を停止させる非給湯側ランプ停止手段が設けられ
ている構成をもって課題を解決するための手段としてい
る。Further, the sixth aspect of the present invention further includes a hot-water supply / water-discharge temperature detecting means for detecting a hot-water supply / discharge temperature in addition to any one of the first to fifth aspects of the present invention. The non-hot water supply side flow detecting means for detecting the flow of the heat medium in the non-hot water supply side circulation passage based on a change in the hot water supply / outlet temperature detected by the hot water supply / outlet temperature detection means when the non-hot water supply side operation instruction is given during the operation The non-hot water supply side combustion lamp is provided when the flow of the heat medium in the non-hot water supply side circulation passage is not detected by the non-hot water supply side flow detecting means within a predetermined time from the start of the notification operation of the non-hot water supply side combustion lamp. This is a means for solving the problem by providing a non-hot water supply lamp stopping means for stopping the notification operation of (1).
【００２９】さらに、本第７の発明は、上記本第５の発
明又は第６の発明の構成に加え、非給湯側燃焼ランプの
報知動作開始から予め定められた時間内に非給湯側流れ
検知手段によって非給湯側循環通路の熱媒体の流れが検
知されなかったときには非給湯側異常信号を出力する非
給湯側運転異常判断部が設けられている構成をもって課
題を解決するための手段としている。Further, in the seventh invention, in addition to the configuration of the fifth invention or the sixth invention, the non-hot-water supply side flow detection is performed within a predetermined time from the start of the notification operation of the non-hot-water supply side combustion lamp. When the flow of the heat medium in the non-hot-water supply side circulation passage is not detected by the means, a non-hot-water supply side operation abnormality determination unit that outputs a non-hot-water supply side abnormality signal is provided as means for solving the problem.
【００３０】さらに、本第８の発明は、上記本第７の発
明の構成に加え、非給湯側運転異常判断部から非給湯側
異常信号が出力されたときに非給湯側運転を強制的に停
止させる非給湯側強制停止手段が設けられている構成を
もって課題を解決するための手段としている。Further, in the eighth invention, in addition to the structure of the seventh invention, when the non-hot water supply side abnormality signal is output from the non-hot water supply side abnormality determination section, the non-hot water supply side operation is forcibly performed. The configuration is provided with a non-hot-water-supply-side forcible stop means for stopping, and is a means for solving the problem.
【００３１】さらに、本第９の発明は、上記本第７の発
明又は第８の発明の構成に加え、上記非給湯側運転異常
判断部から非給湯側異常信号が出力されたときに非給湯
側運転の異常を報知する非給湯側異常報知手段が設けら
れている構成をもって課題を解決するための手段として
いる。Further, in the ninth aspect, in addition to the configuration of the seventh or eighth aspect, when the non-hot water supply side abnormality signal is output from the non-hot water supply side operation abnormality determination section, the non-hot water supply side The configuration is provided with a non-hot water supply side abnormality notifying unit for notifying an abnormality of the side operation, which is a means for solving the problem.
【００３２】さらに、本第１０の発明は、上記本第１の
発明乃至第９の発明のいずれか１つの構成に加え、非給
湯側循環通路は追い焚き循環通路とし、非給湯側熱交換
器は追い焚き熱交換器とし、上記追い焚き循環通路を循
環する熱媒体は湯水とし、非給湯側の運転は風呂の追い
焚き運転とした構成をもって課題を解決するための手段
としている。Further, in the tenth aspect of the present invention, in addition to any one of the first to ninth aspects of the present invention, the non-hot-water supply side circulation passage is a reheating heating circulation passage, and the non-hot-water supply side heat exchanger is provided. Is a reheating heat exchanger, the heating medium circulating in the reheating circulation passage is hot water, and the operation on the non-hot water supply side is a reheating operation of a bath to solve the problem.
【００３３】上記構成の本発明において、例えば本第１
の発明においては、非給湯側運転指示が与えられたとき
に、循環ポンプを駆動させるとともに、非給湯側ランプ
作動手段によって直ちに非給湯側燃焼ランプが報知動作
開始させられる。また、本第２の発明においては、非給
湯側運転指示が与えられたときに、非給湯側燃焼強制開
始手段によって、循環ポンプを駆動させるとともに非給
湯側循環通路の熱媒体の流れを検知せずにバーナー燃焼
運転を直ちに開始させる動作が行われ、バーナーの燃焼
が確認されたときに、非給湯側ランプ作動手段によって
直ちに非給湯側燃焼ランプの報知動作開始が行われる。In the present invention having the above structure, for example,
According to the invention, when the non-hot water supply side operation instruction is given, the circulation pump is driven, and the non-hot water supply side combustion lamp is immediately started to be notified by the non-hot water supply side lamp operating means. Further, in the second invention, when the non-hot water supply side operation instruction is given, the non-hot water supply side forced combustion start means drives the circulation pump and detects the flow of the heat medium in the non-hot water supply side circulation passage. The operation for immediately starting the burner combustion operation is performed, and when the combustion of the burner is confirmed, the non-hot water supply side lamp operating means immediately starts the notification operation of the non-hot water supply side combustion lamp.
【００３４】このように、本発明においては、何れも、
非給湯側運転指示が与えられてから非給湯側循環通路の
熱媒体の流れを検知せずに非給湯側燃焼ランプを報知動
作開始させるので、たとえ非給湯側運転指示が与えられ
た直後に例えば流水スイッチなどによって非給湯側循環
通路の熱媒体の流れの検知が行われなくとも、非給湯側
燃焼ランプの報知動作が開始されるために、従来の給湯
器のように風呂等の非給湯側の利用者が非給湯側運転指
示を与えたにも拘わらず非給湯側燃焼ランプが報知動作
しないといったことはなく、それにより利用者が給湯器
の故障が生じたのではないかと誤判断することを防止す
ることができるようになり、利用者が給湯器を安心して
利用することが可能となり、上記課題が解決される。As described above, in the present invention,
After the non-hot water supply side operation instruction is given, the notification operation of the non-hot water supply side combustion lamp is started without detecting the flow of the heat medium in the non-hot water supply side circulation passage. Even if the flow of the heat medium in the non-hot water supply side circulation passage is not detected by a running water switch or the like, the notification operation of the non-hot water supply side combustion lamp is started. That the non-hot water supply side combustion lamp does not perform the notification operation even though the user has given the non-hot water supply side operation instruction, thereby causing the user to erroneously judge that the water heater has failed. Can be prevented, the user can use the water heater with confidence, and the above problem is solved.
【００３５】[0035]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。なお、本実施形態例の説明におい
て、前記提案例の給湯器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する。本実施形態例の一缶二
水路給湯器は一缶二水路風呂給湯器であり、図７に示し
た提案例の一缶二水路風呂給湯器と同様のシステム構成
を有しているが、本実施形態例においては、給湯熱交換
器３の湯温を検出する給湯熱交換器湯温検出手段として
の図７の破線に示す給湯熱交湯温センサ３３を給湯熱交
換器３のＵ字管に設けており、また、図７において、追
い焚き循環通路２４に設けられている流水スイッチ３６
を省略して一缶二水路風呂給湯器を構成している。ま
た、本実施形態例の一缶二水路風呂給湯器は、図１に示
す特有な制御構成を有している。Embodiments of the present invention will be described below with reference to the drawings. In the description of the present embodiment, the same names as those of the water heater of the proposed example are denoted by the same reference numerals, and redundant description thereof will be omitted. The one-can-two-channel water heater of this embodiment is a one-can-two-channel water heater, and has the same system configuration as the proposed one-can-two-channel water heater of FIG. In the embodiment, a hot water supply hot water temperature sensor 33 shown by a broken line in FIG. 7 as a hot water supply heat exchanger hot water temperature detecting means for detecting the hot water temperature of the hot water supply heat exchanger 3 is used as a U-shaped tube of the hot water supply heat exchanger 3. In FIG. 7, a flowing water switch 36 provided in the reheating circulation passage 24 is provided.
Is omitted to constitute a one-can-two-channel bath water heater. Further, the one-can two-channel bath water heater of this embodiment has a unique control configuration shown in FIG.
【００３６】図１に示すように、本実施形態例の一缶二
水路給湯器の制御装置４０は、追い焚き燃焼強制開始手
段４６、燃焼制御部４２、追い焚きランプ作動手段５
１、追い焚きランプ停止手段５２、追い焚き単独運転燃
焼制御部４５、追い焚き単独運転監視部４３、データ格
納部４４、追い焚き流水検知手段５３、追い焚き運転異
常判断部４９、追い焚き強制停止手段４８を有して構成
されており、リモコン４１には、追い焚き燃焼ランプ５
４と追い焚き異常報知手段５０が設けられている。As shown in FIG. 1, the control device 40 of the one-can two-channel water heater according to the present embodiment comprises a reheating combustion forced start means 46, a combustion control section 42, and a reheating lamp operating means 5
1, reheating lamp stop means 52, reheating independent operation combustion control unit 45, reheating independent operation monitoring unit 43, data storage unit 44, reheating flowing water detection means 53, reheating operation abnormality judgment unit 49, reheating forcible stop Means 48, and the remote controller 41
4 and a reheating abnormality notification means 50 are provided.
【００３７】追い焚きランプ作動手段５１は、非給湯側
ランプ作動手段として機能するものであり、リモコン４
１から非給湯側運転指示としての追い焚き指示が与えら
れたときに、循環ポンプ２０を駆動させるとともに直ち
に追い焚き燃焼ランプ５４を、例えば点灯などの追い焚
き報知動作開始させる。また、追い焚きランプ作動手段
５１は、追い焚き運転終了時に追い焚き燃焼ランプ５４
の追い焚き報知動作を停止させる。The reheating lamp operating means 51 functions as a non-hot water supply side lamp operating means.
When a reheating instruction as a non-hot water supply side operation instruction is given from 1, the circulating pump 20 is driven and the reheating combustion lamp 54 is immediately started, for example, to start a reheating notification operation such as lighting. Further, the reheating lamp operating means 51 is provided with a reheating lamp 54 at the end of the reheating operation.
To stop the reheating operation.
【００３８】燃焼制御部４２には、給湯や追い焚きなど
の様々な運転のシーケンスプログラムが与えられてお
り、燃焼制御部４２はリモコン４１の情報や風呂温度セ
ンサ３７などのセンサ出力を取り込んで、それら取り込
んだ情報とシーケンスプログラムに従って給湯器の燃焼
運転動作を制御する。The combustion control unit 42 is provided with various operation sequence programs such as hot water supply and reheating, and the combustion control unit 42 captures information of the remote controller 41 and sensor outputs of the bath temperature sensor 37 and the like, The combustion operation of the water heater is controlled according to the acquired information and the sequence program.
【００３９】追い焚き燃焼強制開始手段４６は、非給湯
側燃焼強制開始手段として機能するものであり、リモコ
ン４１から追い焚き指示が与えられたときに、循環ポン
プ２０を駆動させるともに、燃焼制御部４２にバーナー
燃焼運転開始指令を加え、それにより、追い焚き循環通
路２４の湯水の流れを検知せずにバーナー燃焼運転を直
ちに開始させる。The reheating combustion forced start means 46 functions as a non-hot water supply forced combustion start means. When a reheating instruction is given from the remote controller 41, the recirculation pump 20 is driven and the refueling combustion control section 46 is operated. A burner combustion operation start command is added to 42 to thereby immediately start the burner combustion operation without detecting the flow of hot and cold water in the additional heating circulation passage 24.
【００４０】追い焚き単独運転監視部４３は、上記燃焼
制御部４２の運転情報を取り込み、この情報に基づき、
例えば、循環ポンプ２０の駆動を検知している状態で給
湯確認スイッチ３５又は水量センサ３１が通水を検知し
ていないときには、器具が追い焚き単独運転をしている
と検知し、それ以外のときには器具は追い焚き単独運転
をしていないと検知する。The additional heating independent operation monitoring unit 43 captures the operation information of the combustion control unit 42, and based on this information,
For example, when the hot water supply confirmation switch 35 or the water amount sensor 31 does not detect the flow of water while detecting the driving of the circulation pump 20, the appliance detects that the appliance is operating alone and in other cases, Detects that the appliance is not in reheating alone operation.
【００４１】データ格納部４４には、バーナー燃焼を停
止させる設定温度としてのオフ温度とバーナー燃焼を再
開させる設定温度としてのオン温度が予め定められて格
納されている。例えば、上記オフ温度は、追い焚き単独
運転中に給湯熱交換器３のピーク温度領域の滞留湯が沸
騰に近い状態であることを示す予め定めた湯温（例え
ば、９０℃）になったときに給湯熱交湯温センサ３３に
より検出される湯温である。上記オン温度は、上記オフ
温度よりも予め定めた温度（例えば、３℃）分だけ低下
させた湯温である。In the data storage section 44, an OFF temperature as a set temperature for stopping burner combustion and an ON temperature as a set temperature for restarting burner combustion are stored in advance. For example, when the off-temperature reaches a predetermined hot water temperature (for example, 90 ° C.) indicating that the staying hot water in the peak temperature region of the hot water supply heat exchanger 3 is close to boiling during the reheating alone operation. Is the hot water temperature detected by the hot water supply hot water temperature sensor 33. The ON temperature is a hot water temperature lower than the OFF temperature by a predetermined temperature (for example, 3 ° C.).
【００４２】追い焚き単独運転燃焼制御部４５は、非給
湯側単独運転燃焼制御部として機能するものであり、時
々刻々と、給湯熱交湯温センサ３３のセンサ出力を給湯
熱交換器３の湯温として検出し、また、データ格納部４
４のオン温度とオフ温度および追い焚き単独運転監視部
４３の監視情報を時々刻々と取り込み、取り込まれた検
出給湯熱交換器湯温を前記オフ温度に比較し、上記追い
焚き単独運転監視部４３の監視情報に基づき追い焚き単
独運転中であると検知しているときに、給湯熱交換器３
の湯温がオフ温度以上になったと判断したときに、給湯
熱交換器３の滞留湯水が沸騰に近い状態になったので給
湯熱交換器３の滞留湯水の湯温を低下させるためにバー
ナー２の燃焼を停止させる必要があると判断し、電磁弁
１０を閉弁させバーナー２の燃焼を停止させる。The refueling single operation combustion control section 45 functions as a non-hot water supply side single operation combustion control section, and outputs the sensor output of the hot water supply hot water temperature sensor 33 to the hot water of the hot water supply heat exchanger 3 every moment. Temperature, and the data is stored in the data storage unit 4
The on-temperature and off-temperature of 4 and the monitoring information of the reheating independent operation monitoring unit 43 are captured every moment, and the detected hot water supply heat exchanger hot water temperature is compared with the off-temperature. The hot water supply heat exchanger 3 when it is detected that
When it is determined that the hot water temperature has become equal to or higher than the OFF temperature, the hot water staying in the hot water supply heat exchanger 3 has almost reached a boiling state. It is determined that it is necessary to stop the combustion of the burner 2, and the electromagnetic valve 10 is closed to stop the combustion of the burner 2.
【００４３】また、追い焚き単独運転燃焼制御部４５は
バーナー燃焼停止信号を燃焼制御部４２に出力する。燃
焼制御部４２は上記バーナー燃焼停止信号を受け、バー
ナー２の燃焼停止が追い焚き単独運転制御によりなされ
たものであり、器具の異常ではないと判断し、循環ポン
プ２０の駆動等の器具運転動作と追い焚き燃焼ランプ５
４の点灯を継続して行う。このため、上記追い焚き単独
運転中のバーナー２の停止期間に循環ポンプ２０の駆動
は継続されるとともに、追い焚き燃焼ランプ５４が引き
続き点灯しており、利用者に対して不安を与えるのを防
いでいる。Further, the reheating independent operation combustion control section 45 outputs a burner combustion stop signal to the combustion control section 42. The combustion control unit 42 receives the burner combustion stop signal, determines that the burner 2 has stopped burning by the reheating independent operation control, and determines that there is no abnormality of the appliance, and operates the appliance operation such as driving the circulation pump 20. And reburn burning lamp 5
The lighting of 4 is continued. For this reason, the drive of the circulation pump 20 is continued during the stop period of the burner 2 during the above-mentioned reheating alone operation, and the reheating combustion lamp 54 is continuously lit, thereby preventing anxiety to the user. In.
【００４４】さらに、追い焚き単独運転燃焼制御部４５
は、追い焚き単独運転中のバーナー２の燃焼停止中にも
引き続き給湯熱交湯温センサ３３のセンサ出力と、デー
タ格納部４４のオフ温度およびオン温度との取り込みを
行って、給湯熱交湯温センサ３３により検出される給湯
熱交換器３の湯温を前記オン温度に比較し、給湯熱交換
器３の湯温がオン温度以下に低下したと判断したとき
に、バーナー２の燃焼を再開させてもよいと判断し、点
着火手段（図示せず）を用いてバーナー２の点着火を行
いバーナー２の燃焼を再開させる。Further, the refueling single operation combustion control unit 45
Continues to take in the sensor output of the hot water supply hot water temperature sensor 33 and the OFF temperature and the ON temperature of the data storage unit 44 even during the stop of combustion of the burner 2 during the reheating alone operation, and The hot water temperature of the hot water supply heat exchanger 3 detected by the temperature sensor 33 is compared with the ON temperature, and when it is determined that the hot water temperature of the hot water supply heat exchanger 3 has fallen below the ON temperature, the combustion of the burner 2 is restarted. Then, it is determined that the burner 2 may be started, and the burner 2 is ignited by using a spot igniting means (not shown) to restart the combustion of the burner 2.
【００４５】上記のように、追い焚き単独運転燃焼制御
部４５は、追い焚き単独運転中に、バーナー２のオン・
オフ燃焼制御を行う。As described above, during reheating alone operation, the combustion control section 45 turns on / off the burner 2 during the reheating alone operation.
Perform off-combustion control.
【００４６】追い焚き流水検知手段５３は、非給湯側流
れ検知手段として機能するものであり、追い焚き単独運
転監視部４３の監視情報を受けて、追い焚き単独運転中
に、給湯熱交湯温センサ３３により検出される給湯熱交
換器３の湯温を取り込み、この検出湯温データに基づい
て追い焚き循環通路２４の湯水の流れを検知する。The additional heating running water detecting means 53 functions as a non-hot water supply side flow detecting means. The hot water temperature of the hot water supply heat exchanger 3 detected by the sensor 33 is taken in, and the flow of hot water in the additional heating circulation passage 24 is detected based on the detected hot water temperature data.
【００４７】この追い焚き単独運転中の追い焚き循環通
路２４の湯水の流れの検知に際し、前記データ格納部４
４には、追い焚き単独運転中の給湯熱交換器３の湯温デ
ータの基準パターンが予め与えられており、追い焚き流
水検知手段５３は、追い焚き単独運転中に給湯熱交湯温
センサ３３によって検出される給湯熱交換器３の湯温を
時々刻々と取り込み、この検出湯温データが前記基準パ
ターンから予め定められた許容範囲を越えて異なるとき
には追い焚き循環通路２４に熱媒体としての湯水がな
い、又は湯水の流れがないと判断し、前記検出湯温デー
タが前記基準パターンから前記許容範囲を越えて異なる
ものではないときには、追い焚き循環通路２４の湯水の
流れがあると判断する。In detecting the flow of hot and cold water in the reheating recirculation passage 24 during the reheating alone operation, the data storage unit 4
4, a reference pattern of the hot water temperature data of the hot water supply heat exchanger 3 during the reheating alone operation is given in advance, and the refueling flowing water detecting means 53 supplies the hot water supply hot water temperature sensor 33 during the reheating alone operation. The detected hot water temperature of the hot water supply heat exchanger 3 is fetched from time to time, and when the detected hot water temperature data differs from the reference pattern beyond a predetermined allowable range, hot water as a heat medium is supplied to the reheating circulation passage 24. If the detected hot water temperature data does not differ from the reference pattern by more than the allowable range, it is determined that there is a flow of hot water in the additional heating circulation passage 24.
【００４８】前記データ格納部４４には、追い焚き単独
運転中の給湯熱交換器３の湯温データの基準パターンが
予め与えられている。この基準パターンは、例えば図３
の（ａ）に示すような正弦波状のパターンによって与え
られており、例えば追い焚き循環通路２４の湯水循環流
量が基準流量（例えば４リットル／ｍｉｎ）のときの追
い焚き単独運転中の給湯熱交換器３の湯温データが予め
実験等により求められ、基準パターンとして与えられて
いる。なお、本明細書において、正弦波状の波形とは、
図３の（ａ）に示したような波形のみならず、図３の
（ｂ）に示すような形の崩れた正弦波状の波形、いわゆ
る交番状波形も含む広い概念で用いている。The data storage section 44 is previously provided with a reference pattern of hot water temperature data of the hot water supply heat exchanger 3 during the reheating alone operation. This reference pattern is, for example, as shown in FIG.
(A), for example, the hot water supply heat exchange during the reheating alone operation when the hot water circulation flow rate in the reheating circulation passage 24 is a reference flow rate (for example, 4 liter / min) Hot water temperature data of the vessel 3 is obtained in advance by an experiment or the like, and is given as a reference pattern. In the present specification, the sinusoidal waveform is
It is used in a wide concept including not only the waveform shown in FIG. 3A but also a sinusoidal waveform having a broken shape as shown in FIG. 3B, so-called alternating waveform.
【００４９】ところで、一缶二水路風呂給湯器において
は、バーナー２の燃焼火炎によって給湯熱交換器３の水
管内の湯水が加熱され、追い焚き循環通路２４の循環湯
水が、給湯熱交換器３の水管内の湯水の熱を吸熱して追
い焚きが行われるため、追い焚き循環通路２４の湯水循
環流量によって追い焚き単独運転中の給湯熱交換器３の
湯温データが異なる。Meanwhile, in the one-can-two-channel water heater, the hot water in the water pipe of the hot water supply heat exchanger 3 is heated by the combustion flame of the burner 2, and the circulating hot water in the additional heating circulation passage 24 is heated by the hot water supply heat exchanger 3. Since the heat of the hot water in the water pipe is absorbed and the reheating is performed, the hot water temperature data of the hot water supply heat exchanger 3 in the reheating alone operation differs depending on the hot water circulation flow rate of the reheating circulation passage 24.
【００５０】例えば、追い焚き循環通路２４の湯水循環
流量が少ないときには、前記吸熱量が少ないために、例
えば図３の（ｂ）に示すように、バーナー燃焼によって
給湯熱交換器３の湯温は急に上昇し、前記オフ温度に早
く達する。そして、給湯熱交換器３の湯温がオフ温度以
上になってバーナー燃焼が停止されるが、給湯熱交換器
３の湯温は、余熱により、温度上昇が急な分だけ高い温
度まで上昇し、その後、緩やかに下降していく。For example, when the flow rate of the hot water circulation in the additional heating circulation passage 24 is small, the amount of heat absorbed is small. Therefore, as shown in FIG. 3B, the hot water temperature of the hot water supply heat exchanger 3 is reduced by burner combustion. It rises rapidly and reaches the off-temperature quickly. Then, the hot water temperature of the hot water supply heat exchanger 3 becomes higher than the off temperature and the burner combustion is stopped. However, the hot water temperature of the hot water supply heat exchanger 3 rises to a higher temperature due to the sudden rise in temperature due to the residual heat. After that, it gradually descends.
【００５１】その後、給湯熱交換器３の湯温が前記オン
温度以下になると、バーナー燃焼が再開され、バーナー
燃焼再開時から給湯熱交換器３の湯温上昇開始までの遅
れ時間経過以降に、給湯熱交換器３の湯温が再び急に上
昇していく。なお、追い焚き循環通路２４の湯水循環流
量が少ないときは、前記の如く、バーナー燃焼停止時の
給湯熱交換器３の湯温下降が緩やかなため、給湯熱交換
器３の湯温がオン温度以下となってから給湯熱交換器３
の湯温が低下する割合は、追い焚き循環通路２４の湯水
循環流量が多いときに比べて小さい。Thereafter, when the hot water temperature of the hot water supply heat exchanger 3 becomes lower than the ON temperature, the burner combustion is restarted, and after a lapse of a delay time from the restart of the burner combustion to the start of the hot water temperature increase of the hot water supply heat exchanger 3, Hot water temperature of hot water supply heat exchanger 3 suddenly rises again. When the flow rate of the hot water circulation in the additional heating circulation passage 24 is small, as described above, the hot water temperature of the hot water supply heat exchanger 3 when the burner combustion stops is gradual, so that the hot water temperature of the hot water supply heat exchanger 3 becomes the ON temperature. Hot water supply heat exchanger 3
The rate at which the hot water temperature decreases is smaller than when the hot water circulation flow rate in the additional heating circulation passage 24 is large.
【００５２】したがって、図３の（ｂ）に示すように、
追い焚き循環通路２４の湯水循環流量が前記基準流量よ
りも小さいときには、検出湯温データの波形の周期Ｔ1
は、図３の（ａ）に示す前記基準パターンの周期Ｔ0よ
りも長くなり、この検出湯温データの波形の湯温上昇傾
きθU1は基準パターンの湯温上昇傾きθU0よりも大きく
なり、検出湯温データの波形の湯温下降傾きはθD1は基
準パターンの湯温下降傾きθD0よりも小さくなる。ま
た、このときの検出湯温データの波形の振幅Ａ1は基準
パターンの振幅Ａ0よりも高温側にシフトし、検出湯温
データの波形の振幅中心Ｃ1は基準パターンの振幅中心
Ｃ0よりも高温となる。Therefore, as shown in FIG.
When the hot water circulation flow rate in the reheating circulation passage 24 is smaller than the reference flow rate, the cycle T 1 of the waveform of the detected hot water temperature data is used.
Is longer than the cycle T 0 of the reference pattern shown in FIG. 3A, and the temperature rise gradient θ U1 of the waveform of the detected temperature data becomes larger than the temperature rise gradient θ U0 of the reference pattern. In the detected hot water temperature data waveform, the hot water temperature falling slope θ D1 is smaller than the hot water temperature falling slope θ D0 of the reference pattern. At this time, the amplitude A 1 of the detected hot water temperature data waveform is shifted to a higher temperature side than the amplitude A 0 of the reference pattern, and the amplitude center C 1 of the detected hot water temperature data waveform is shifted from the amplitude center C 0 of the reference pattern. Also get hot.
【００５３】そして、追い焚き循環通路２４の湯水の流
れがないときには、例えば図４に示すように、検出湯温
データの湯温上昇傾きθUEは極端に大きくなり、湯温下
降傾きθDEは非常に小さくなり、周期ＴEは、例えば基
準パターンの周期Ｔ0が４０秒程度であるのに対して周
期ＴEは５分といったように非常に長くなる。また、こ
のときの検出湯温データの振幅ＡEは基準パターンの振
幅Ａ0に比べて大きく高温側にシフトし、検出湯温デー
タの振幅中心点ＣEも基準パターンの振幅中心点Ｃ0に比
べて非常に高温となる。[0053] Then, when there is no hot water flow Reheating circulation passage 24, for example, as shown in FIG. 4, the hot water temperature rising slope theta UE detected hot water temperature data becomes extremely large, the hot water temperature descending gradient theta DE The period T E is very small, and the period T E is very long, for example, the period T 0 of the reference pattern is about 40 seconds, whereas the period T E is 5 minutes. Also, the amplitude A E of the detected hot water temperature data at this time shifts to a higher temperature side than the amplitude A 0 of the reference pattern, and the amplitude center point CE of the detected hot water temperature data also becomes the amplitude center point C 0 of the reference pattern. The temperature becomes very high.
【００５４】一方、追い焚き循環通路２４の湯水循環流
量が前記基準流量よりも多いときには、追い焚き循環通
路２４の循環湯水による給湯熱交換器３側からの吸熱量
が多いために、給湯熱交換器３の湯温は、バーナー燃焼
によって緩やかに上昇し、バーナー燃焼が停止されると
急に下降する。On the other hand, when the hot water circulation flow rate in the additional heating circulation passage 24 is larger than the reference flow rate, the amount of heat absorbed from the hot water supply heat exchanger 3 by the circulation hot water in the additional heating circulation passage 24 is large. The temperature of the hot water of the vessel 3 rises slowly by the burner combustion, and falls sharply when the burner combustion is stopped.
【００５５】追い焚き流水検知手段５３は、以上のよう
な、追い焚き単独運転中の追い焚き循環通路２４の湯水
循環流量によって異なる給湯熱交換器の湯温データ特性
に基づき、前記の如く、追い焚き単独運転中に給湯熱交
湯温センサ３３によって検出される給湯熱交換器３の検
出湯温データを前記基準パターンと比較する。そして、
検出湯温データの波形の振幅が基準パターンの振幅Ａ0
から予め定められた許容範囲を越えて異なるときには追
い焚き循環通路２４に湯水がない、又は湯水の流れがな
いと判断する。また、検出湯温データの波形の周期が基
準パターンの周期Ｔ0から予め定められた許容範囲を越
えて異なるときにも、検出湯温データの波形の傾き（湯
温上昇傾きと湯温下降傾きの一方又は両方）が基準パタ
ーンの対応する傾きθU0とθD0の一方又は両方から予め
定められた許容範囲を越えて異なるときにも同様の判断
を行う。The additional heating water detection means 53 is based on the hot water temperature data characteristic of the hot water supply heat exchanger which varies depending on the hot water circulation flow rate of the additional heating circulation passage 24 in the additional heating alone operation as described above. The detected hot water temperature data of the hot water supply heat exchanger 3 detected by the hot water supply hot water temperature sensor 33 during the sole operation of the boiler is compared with the reference pattern. And
The amplitude of the waveform of the detected hot water temperature data is the amplitude A 0 of the reference pattern.
When it is different from the predetermined allowable range, it is determined that there is no hot water in the reheating circulation passage 24 or that there is no flow of hot water. Also, when the cycle of the waveform of the detected hot water data is different from the cycle T 0 of the reference pattern beyond a predetermined allowable range, the slope of the waveform of the detected hot water data (the rising slope and the falling slope) The same determination is also made when one or both of them differ from one or both of the corresponding inclinations θ U0 and θ D0 of the reference pattern beyond a predetermined allowable range.
【００５６】なお、追い焚き流水検知手段５３は、前記
検出湯温データと前記基準パターンの比較に際し、前記
振幅、周期、傾きの少なくとも１つを比較することによ
って、追い焚き循環通路２４の湯水の流れがない等の判
断を行うことができるが、検出湯温データの波形の振
幅、周期、傾きの２つ以上を、それぞれ、基準パターン
の振幅、周期、傾きと比較して前記流水なし判断を行っ
てもよい。また、図４に示したような、追い焚き循環通
路２４の湯水の流れがないときの給湯熱交換器３の湯温
データは、図３の（ａ）に示したような基準パターンと
は明らかに違うために、各グラフデータを重ね合わせ
て、前記流水なしの判断を行うこともできる。The reheating steam flowing water detecting means 53 compares the detected hot water temperature data with the reference pattern by comparing at least one of the amplitude, cycle, and inclination to thereby detect the hot water flowing in the reheating circulation passage 24. The determination that there is no flow can be performed, but the two or more of the amplitude, cycle, and slope of the waveform of the detected hot water temperature data are compared with the amplitude, cycle, and slope of the reference pattern, respectively, to determine the absence of flowing water. May go. The hot water temperature data of the hot water supply heat exchanger 3 when there is no hot water flow in the reheating circulation passage 24 as shown in FIG. 4 is apparently the reference pattern as shown in FIG. Therefore, the determination of the absence of flowing water can be made by superimposing the respective graph data.
【００５７】追い焚き流水検知手段５３は、以上のよう
にして追い焚き循環通路２４の流水なし判断を行い、追
い焚き単独運転中に流水なし判断が行われたときには流
水なし信号を出力し、流水なし判断が行われないときに
は流水あり信号を出力し、これらの信号を追い焚き運転
異常判断部４９と追い焚きランプ停止手段５２に加え
る。The refueling running water detecting means 53 determines whether there is no running water in the reheating recirculation passage 24 as described above, and outputs a no running water signal when the no running water determination is made during the reheating alone operation. When the absence determination is not performed, a running water presence signal is output, and these signals are added to the reheating operation abnormality determination unit 49 and the reheating lamp stopping means 52.
【００５８】また、追い焚き流水検知手段５３は、出湯
温度センサ３８により検出される給湯の出湯温度を時々
刻々と取り込み、給湯運転と追い焚き運転の同時使用
時、すなわち、給湯運転中に追い焚き指示が与えられた
ときに、出湯温度センサ３８によって検出される給湯出
湯温度変化に基づいて追い焚き循環通路２４の湯水の流
れを検知する。Further, the reheating water detecting means 53 captures the tapping temperature of the hot water detected by the tapping temperature sensor 38 from time to time, and performs the reheating during the simultaneous use of the hot water supply operation and the reheating operation, that is, during the hot water supply operation. When the instruction is given, the flow of hot and cold water in the additional heating circulation passage 24 is detected based on a change in hot and cold water supply temperature detected by the hot water supply temperature sensor 38.
【００５９】前記の如く、一缶二水路風呂給湯器におい
ては、バーナー２の燃焼が行われると、バーナー２の燃
焼火炎によって給湯熱交換器３内の湯水の加熱が行わ
れ、このとき、追い焚き指示が与えられて追い焚き循環
通路２４の湯水が循環すると、追い焚き循環通路２４の
湯水が給湯熱交換器３の湯の熱を奪って追い焚きが行わ
れるために、例えば図５に示すように、給湯運転が行わ
れていて給湯設定温度の湯が出湯されているときに、追
い焚き指示が与えられて循環ポンプ２０が駆動される
と、この循環ポンプ２０の運転開始に伴い循環する追い
焚き循環通路２４の湯水によって給湯熱交換器３の湯の
熱が吸熱され、給湯出湯温度が一時的に低下する。な
お、一缶二水路風呂給湯器において、給湯運転と追い焚
き運転の同時使用時には、給湯出湯温度が給湯設定温度
となるようなガス量制御が行われて給湯運転優先のバー
ナー燃焼が行われるために、前記給湯出湯温度の低下は
一時的なものにとどまる。As described above, in the one-can two-channel water heater, when the burner 2 is burned, the hot water in the hot water supply heat exchanger 3 is heated by the combustion flame of the burner 2. When the heating instruction is given and the hot water in the additional heating circulation passage 24 circulates, the hot water in the additional heating circulation passage 24 removes the heat of the hot water in the hot water supply heat exchanger 3 and the additional heating is performed. As described above, when the hot water supply operation is being performed and the hot water at the set hot water supply temperature is being supplied, the recirculation pump 20 is driven by the instruction of the reheating, and the hot water is circulated with the start of the operation of the circulation pump 20. The hot water in the hot water supply heat exchanger 3 absorbs the heat of the hot water from the hot water recirculation passage 24, and the hot water supply temperature drops temporarily. In the one-can-two-channel bath water heater, when simultaneous use of the hot water supply operation and the reheating operation is performed, the gas amount control is performed so that the hot water supply hot water temperature becomes the hot water supply set temperature, and burner combustion is performed with priority on the hot water supply operation. In addition, the drop of the hot water supply temperature is only temporary.
【００６０】本実施形態例では、追い焚き流水検知手段
５３は、給湯運転中に追い焚き指示が与えられたとき
に、上記給湯出湯温度の温度変化が予め与えられた温度
範囲以上のときには追い焚き循環通路２４の湯水の流れ
があると判断し、前記温度変化が前記温度範囲未満のと
きには追い焚き循環通路２４に湯水がない、又は湯水の
流れがないと判断する。この判断結果は、流水なし信号
又は流水あり信号として、追い焚き運転異常判断部４９
と追い焚きランプ停止手段５２に加えられる。In the present embodiment, when the additional heating instruction is given during the hot water supply operation, the additional hot water detection means 53 performs the additional heating when the temperature change of the hot water supply hot water temperature is equal to or higher than a predetermined temperature range. It is determined that there is a flow of hot water in the circulation passage 24, and when the temperature change is less than the temperature range, it is determined that there is no hot water or no flow of hot water in the reheating recirculation passage 24. This determination result is used as a no-running-water signal or a no-running-water signal, and
Is added to the reheating lamp stopping means 52.
【００６１】追い焚きランプ停止手段５２は、非給湯側
ランプ停止手段として機能するものであり、図示されて
いないタイマを有しており、前記追い焚きランプ作動手
段５１によって行われる追い焚き燃焼ランプ５４の追い
焚き報知動作開始から、例えば１０分間といった予め定
められた時間内に、追い焚き流水検知手段５３によって
追い焚き循環通路２４の湯水の流れが検知されなかった
ときには、追い焚き燃焼ランプ５４の追い焚き報知動作
を強制的に停止させる。The reheating lamp stopping means 52 functions as a non-hot water supply side lamp stopping means, has a timer (not shown), and is operated by the reheating lamp operating means 51. If the flow of hot water in the reheating circulation passage 24 is not detected by the reheating flowing water detecting means 53 within a predetermined time, for example, 10 minutes from the start of the reheating heating lamp 54, Forcibly stop the fire notification operation.
【００６２】追い焚き運転異常判断部４９は、非給湯側
運転異常判断部として機能するものであり、図示されて
いないタイマを有しており、前記追い焚きランプ作動手
段５１によって行われる追い焚き燃焼ランプ５４の追い
焚き報知動作開始から、例えば１０分間といった予め定
められた時間内に、追い焚き流水検知手段５３によって
追い焚き循環通路２４の湯水の流れが検知されなかった
ときには、追い焚き異常信号を出力する。この追い焚き
異常信号は、追い焚き強制停止手段４８と追い焚き異常
報知手段５０とに加えられる。The reheating operation abnormality judging section 49 functions as a non-hot water supply side operation abnormality judging section, has a timer (not shown), and performs the reheating combustion operation performed by the reheating lamp operating means 51. If the flow of the hot water in the additional heating circulation passage 24 is not detected by the additional heating flowing water detecting means 53 within a predetermined time period of, for example, 10 minutes from the start of the additional heating notification operation of the lamp 54, the additional heating abnormal signal is output. Output. The reheating abnormal signal is applied to the reheating forced stopping means 48 and the reheating abnormal notification means 50.
【００６３】追い焚き強制停止手段４８は、非給湯側強
制停止手段として機能するものであり、追い焚き運転異
常判断部４９から追い焚き異常信号が出力されたとき
に、追い焚き運転を強制的に停止させるものであり、追
い焚き運転異常判断部４９から出力される追い焚き異常
信号を受けて、燃焼制御部４２に追い焚き運転停止指令
を加えて追い焚き運転を強制的に停止させる。The additional heating forced stop means 48 functions as a non-hot water supply side forced stop means. When the additional heating abnormality signal is output from the additional heating operation abnormality judging section 49, the additional heating operation is forcibly performed. In response to the reheating abnormality signal output from the reheating operation abnormality determination unit 49, the reheating operation is commanded to the combustion control unit 42 to forcibly stop the reheating operation.
【００６４】追い焚き異常報知手段５０は、非給湯側異
常報知手段として機能するものであり、追い焚き運転異
常判断部４９から追い焚き異常信号が出力されたとき
に、追い焚き運転の異常を報知するものであり、追い焚
き運転異常判断部４９から出力される追い焚き異常信号
を受けて、例えばブザーや追い焚き異常ランプの点灯な
どの適宜の手段によって追い焚き運転の異常を報知す
る。The additional heating abnormality notification means 50 functions as a non-hot water supply side abnormality notification means. When the additional heating abnormality signal is output from the additional heating operation abnormality judging section 49, the abnormality of the additional heating operation is notified. Upon receiving the reheating abnormality signal output from the reheating operation abnormality judging section 49, the abnormality of the reheating operation is notified by appropriate means such as lighting of a buzzer or a reheating abnormal lamp.
【００６５】本実施形態例は以上のように構成されてお
り、本実施形態例の一缶二水路給湯器において、追い焚
き運転が行われるときには、図２に示すように、ステッ
プ１００で、追い焚きスイッチがオンされて追い焚き指
示が与えられると、ステップ１０１で循環ポンプ２０を
オン駆動させるとともに、追い焚きランプ作動手段５１
によって直ちに追い焚き燃焼ランプ５４がオンされ、追
い焚き報知動作が開始される。その後、追い焚き燃焼強
制開始手段４６により、ステップ１０２で循環ポンプ２
０がオン駆動されるとともに、追い焚き循環通路２４の
湯水の流れを検知せずに、ステップ１０３で、バーナー
２の点着火動作が行われて（着火トライ）、バーナー燃
焼運転が直ちに開始させられる。The present embodiment is configured as described above. When the reheating operation is performed in the one-can two-channel water heater of the present embodiment, as shown in FIG. When the heating switch is turned on and a reheating instruction is given, the circulation pump 20 is turned on in step 101 and the reheating lamp operating means 51 is operated.
As a result, the reheating combustion lamp 54 is immediately turned on, and the reheating notification operation is started. After that, the recirculation pump 2
0 is turned on and the flow of hot water in the reheating circulation passage 24 is not detected, and in step 103, the point ignition operation of the burner 2 is performed (ignition try), and the burner combustion operation is immediately started. .
【００６６】そして、ステップ１０４で、フレームロッ
ト電極がオンしたか否かの判断によってバーナー２の燃
焼開始が確認され、バーナー２の燃焼開始が確認された
ときには、追い焚き単独運転燃焼制御部４５によって、
前記の如く、給湯熱交湯温センサ３３により検出される
給湯熱交換器３の湯温とオフ温度とオン温度とに基づい
て追い焚き単独運転が行われる。なお、給湯運転中に追
い焚き指示が与えられたときには、すでにバーナー２の
燃焼が行われているために、ステップ１０３およびステ
ップ１０４の動作は省略され、燃焼制御部４２によっ
て、給湯優先の燃焼運転制御が行われる。Then, in step 104, the start of combustion of the burner 2 is confirmed by judging whether or not the flame lot electrode has been turned on. ,
As described above, the reheating operation alone is performed based on the hot water temperature, the off temperature, and the on temperature of the hot water supply heat exchanger 3 detected by the hot water supply hot water temperature sensor 33. When the reheating instruction is given during the hot water supply operation, the operations of Step 103 and Step 104 are omitted because the burner 2 has already been burned, and the combustion control unit 42 performs the hot water supply priority combustion operation. Control is performed.
【００６７】次に、ステップ１０６で、追い焚き流水検
知手段５３により、前記の如く、追い焚き単独運転中に
は給湯熱交湯温センサ３３の湯温データに基づき、給湯
運転と追い焚き運転の同時使用時には出湯温度センサ３
８の検出温度に基づき、追い焚き循環通路２４の流水検
知動作が行われる。そして、ステップ１０６で、追い焚
き循環通路２４の流水が検知されたときには、風呂温度
センサ３７により検出される風呂温度が風呂設定温度に
達するまで追い焚き運転が行われ、ステップ１０７で、
追い焚き運転が終了されたことが確認されたときには、
ステップ１０８で、追い焚きランプ作動手段５１により
追い焚き燃焼ランプ５４の追い焚き報知動作がオフ（停
止）され、燃焼制御部４２によって循環ポンプ２０がオ
フされる。Next, at step 106, the reheating and running water detection means 53 detects the hot water supply operation and the reheating operation based on the hot water temperature data of the hot water supply hot water temperature sensor 33 during the reheating alone operation as described above. Hot water temperature sensor 3 for simultaneous use
Based on the detected temperature of 8, a running water detection operation of the reheating circulation passage 24 is performed. Then, when flowing water in the reheating circulation passage 24 is detected in step 106, the reheating operation is performed until the bath temperature detected by the bath temperature sensor 37 reaches the bath set temperature, and in step 107,
When it is confirmed that the reheating operation has been completed,
In step 108, the additional heating notification operation of the additional combustion lamp 54 is turned off (stopped) by the additional heating lamp operating means 51, and the circulation pump 20 is turned off by the combustion controller 42.
【００６８】なお、前記ステップ１０３で、着火トライ
動作が行われたにも拘わらず、ステップ１０４でフレー
ムロット電極のオン確認が行われなかったときには、ス
テップ１１１で、前記着火トライ動作から５秒経過した
か否かが判断され、５秒経過したときには、ステップ１
１２でエラー報知が行われる。If it is determined in step 103 that the flame lot electrode has not been turned on in step 104 despite the fact that the ignition try operation has been performed, then in step 111, five seconds have elapsed since the ignition try operation was performed. If 5 seconds have elapsed, step 1 is executed.
At 12, an error notification is performed.
【００６９】また、前記ステップ１０６で、追い焚き流
水検知手段５３によって追い焚き循環通路２４の流水検
知が行われなかったときには、ステップ１０９で、前記
ステップ１０１での追い焚き燃焼ランプ５４のオン動作
開始（追い焚き報知動作開始）から１０分以上経過した
か否かの判断が行われ、１０分以上経過したときには、
ステップ１１０で、追い焚きランプ停止手段５２により
追い焚き燃焼ランプ５４が停止されるとともに、追い焚
き運転異常判断部４９から追い焚き異常信号が出力され
る。そして、この追い焚き異常信号を受けて、追い焚き
強制停止手段４８により、燃焼制御部４２に追い焚き停
止指令が加えられ、循環ポンプ２０が強制的に停止され
るとともに、追い焚き異常報知手段５０によって、前記
の如く、追い焚き異常報知が行われる。If it is determined in the step 106 that the reheating steam flow detecting means 53 does not detect the flowing water in the reheating circulation passage 24, in a step 109, the operation of turning on the reheating combustion lamp 54 in the step 101 is started. It is determined whether or not 10 minutes or more have elapsed since the start of the reheating notice operation, and when 10 minutes or more have elapsed,
In step 110, the reheating combustion lamp 54 is stopped by the reheating lamp stopping means 52, and the reheating operation abnormality determination unit 49 outputs a reheating abnormal signal. In response to the reheating abnormal signal, the reheating forcible stop means 48 applies a reheating stop command to the combustion control unit 42 to forcibly stop the circulating pump 20 and the reheating abnormal notification means 50. Thus, as described above, the reheating abnormality notification is performed.
【００７０】本実施形態例によれば、以上のように、追
い焚きスイッチがオンされて追い焚き指示が与えられた
ときに、循環ポンプ２０を駆動させるとともに直ちに追
い焚き燃焼ランプ５４を追い焚き報知動作開始させるた
めに、従来のように、追い焚きスイッチがオンされてか
ら循環ポンプ２０をオン駆動し、この循環ポンプ２０の
駆動によって追い焚き循環通路２４の湯水の流れが生じ
たことを流水スイッチ３６によって検知した後にバーナ
ー２の燃焼を開始させ、バーナー２の燃焼開始が確認さ
れてから追い焚き燃焼ランプ５４を追い焚き報知動作開
始させる場合と異なり、追い焚きスイッチがオンされて
から追い焚き燃焼ランプ５４が追い焚き報知動作開始す
るまでに殆ど時間を必要としない。そのため、従来のよ
うに、追い焚きスイッチがオンされてから追い焚き燃焼
ランプ５４がオンするまでに時間がかかることから、風
呂の利用者が給湯器の故障であると誤判断してしまうと
いった問題を回避することが可能となり、利用者が安心
して利用できる一缶二水路給湯器とすることができる。According to this embodiment, as described above, when the reheating switch is turned on and a reheating instruction is given, the circulation pump 20 is driven and the reheating lamp 54 is immediately notified of the reheating. In order to start the operation, the circulating pump 20 is turned on after the reheating switch is turned on as in the related art, and it is determined that the driving of the circulating pump 20 has caused the flow of hot water in the reheating circulation passage 24. In contrast to the case where the combustion of the burner 2 is started after the detection by 36, and the start of combustion of the burner 2 is confirmed, then the reheating combustion lamp 54 is started to notify the reheating operation, the reheating combustion is performed after the reheating switch is turned on. It takes almost no time before the lamp 54 starts the reheating notification operation. Therefore, as in the related art, it takes a long time from the turning on of the reheating switch to the turning on of the reheating lamp 54, so that the bath user may erroneously determine that the water heater is faulty. Can be avoided, and a one-can-two-channel water heater that can be used safely by the user can be provided.
【００７１】また、本実施形態例によれば、以上のよう
に、追い焚き指示が与えられたときに、循環ポンプ２０
を駆動させるとともに、流水スイッチ３６による追い焚
き循環通路２４の流水検知なしに追い焚き燃焼を開始さ
せ、追い焚き単独運転時には、給湯熱交湯温センサ３３
の検出温度に基づいて追い焚き単独運転燃焼制御部４５
によってバーナー２の燃焼オン・オフ制御を行うととも
に、追い焚き流水検知手段５３により、給湯熱交湯温セ
ンサ３３の検出湯温データに基づいて、追い焚き循環通
路２４の湯水の流れを検知することが行われるために、
たとえ流水スイッチ３６が故障したとしても、あるい
は、流水スイッチ３６を給湯器に設けなくとも、追い焚
き循環通路２４の湯水の流れの有無を確認しながら追い
焚き単独運転を行うことができる。Further, according to the present embodiment, when the reheating instruction is given as described above, the circulation pump 20
, And the reheating combustion is started without detecting the flowing water of the reheating circulation passage 24 by the flowing water switch 36. In the reheating alone operation, the hot water supply hot water temperature sensor 33 is operated.
Reheating independent operation combustion controller 45 based on the detected temperature of
The combustion on / off control of the burner 2 is performed by the controller, and the flow of the hot water in the additional heating circulation passage 24 is detected by the additional heating flowing water detecting means 53 based on the detected hot water temperature data of the hot water supply hot water temperature sensor 33. To be done,
Even if the flowing water switch 36 fails, or even if the flowing water switch 36 is not provided in the water heater, it is possible to perform the reheating alone operation while checking whether or not the hot water flows in the reheating circulation passage 24.
【００７２】そのため、比較的故障しやすい流水スイッ
チ３６による流水検知に左右されることなく追い焚き運
転を行うことが可能となり、流水スイッチ３６の故障に
よる不具合をなくすことができる。また、流水スイッチ
３６を省略して給湯器を構成することにより、その分だ
け給湯器のシステム構成を簡略化することが可能とな
り、コストダウンを図ることができる。For this reason, the reheating operation can be performed without being affected by the detection of the flowing water by the flowing water switch 36 which is relatively easily broken, and the trouble caused by the failure of the flowing water switch 36 can be eliminated. In addition, by omitting the flowing water switch 36 and configuring the water heater, the system configuration of the water heater can be simplified by that much, and the cost can be reduced.
【００７３】また、本実施形態例によれば、追い焚き単
独運転燃焼制御部４５によって、前記の如く、前記オフ
温度とオン温度に基づいてバーナー２の燃焼オン・オフ
制御を行うために、例えば追い焚き循環通路２４の湯水
の流れがないときにはバーナー燃焼によって給湯熱交換
器３の湯温が急激に上昇し、前記オフ温度に達してすぐ
にバーナー燃焼停止が行われ、その後、給湯熱交換器３
の湯温がオン温度以下にはなかなか下がらないために、
給湯熱交換器３の湯温がオフ温度以上になった以降に引
き続きバーナー燃焼が行われることはなく、追い焚き熱
交換器側の空焚きを防止することができる。Further, according to the present embodiment, in order to perform the combustion on / off control of the burner 2 on the basis of the off temperature and the on temperature by the reheating only operation combustion control unit 45 as described above, for example, When there is no flow of hot water in the reheating circulation passage 24, the hot water temperature of the hot water supply heat exchanger 3 rises rapidly by the burner combustion, and the burner combustion stops immediately after reaching the above-mentioned off-temperature. 3
Because the hot water temperature does not drop easily below the ON temperature,
Burner combustion does not continue after the hot water temperature of the hot water supply heat exchanger 3 becomes equal to or higher than the off-temperature, and it is possible to prevent empty heating on the reheating heat exchanger side.
【００７４】そのうえ、本実施形態例では、追い焚き強
制停止手段４８を設け、追い焚き単独運転異常判断部４
９から追い焚き異常信号が出力されたときには、追い焚
き燃焼を停止させるために、追い焚き熱交換器側の空焚
きをより一層確実に防止することができる。In addition, in the present embodiment, the additional heating forced stopping means 48 is provided, and the additional heating independent operation abnormality determining unit 4 is provided.
When the reheating abnormal signal is output from the block 9, the reheating combustion can be stopped, so that the empty heating on the reheating heat exchanger side can be more reliably prevented.
【００７５】さらに、本実施形態例によれば、追い焚き
異常報知手段５０を設け、追い焚き単独運転異常判断部
４９から追い焚き異常信号が出力されたときには、追い
焚き燃焼の異常を報知するために、給湯器の利用者に、
追い焚き循環通路２４の湯水の流れがない等といった追
い焚きシステムの異常を報知し、注意を促すことができ
る。Further, according to the present embodiment, the reheating abnormality notification means 50 is provided to notify the abnormality of the reheating combustion when the reheating abnormal signal is output from the additional reheating independent operation abnormality judging section 49. To users of water heaters,
An abnormality of the reheating system, such as a lack of hot water flow in the reheating circulation passage 24, can be notified to call attention.
【００７６】なお、本発明は上記実施形態例に限定され
ることはなく様々な実施の態様を採り得る。例えば、上
記実施形態例では、追い焚きランプ作動手段５１は、追
い焚き指示が与えられたときに、循環ポンプ２０駆動さ
せるとともに直ちに追い焚き燃焼ランプ５４を追い焚き
報知動作開始させるようにしたが、例えば、図６に示す
ように、ステップ１００で、追い焚きスイッチがオンさ
れたときに、ステップ１０２で、追い焚き燃焼強制開始
手段４６により、循環ポンプ２０をオン駆動させ、ステ
ップ１０３で、バーナー２の着火トライを行い、ステッ
プ１０４で、フレームロット電極のオン信号を確認する
ことによってバーナー２の燃焼が確認されたときに、追
い焚きランプ作動手段５１によって、直ちに追い焚き燃
焼ランプ５４を追い焚き報知動作開始させる構成として
もよい。The present invention is not limited to the above-described embodiment, but can adopt various embodiments. For example, in the above embodiment, the reheating lamp operating means 51 drives the circulation pump 20 and immediately starts the reheating combustion lamp 54 when the reheating instruction is given. For example, as shown in FIG. 6, when the reheating switch is turned on in step 100, the circulating pump 20 is turned on by the reheating combustion forced start means 46 in step 102, and the burner 2 is turned on in step 103. When the combustion of the burner 2 is confirmed by confirming the ON signal of the flame lot electrode in step 104, the reheating lamp operating means 51 immediately informs the reheating combustion lamp 54 of the reheating. The operation may be started.
【００７７】また、上記実施形態例では、追い焚きラン
プ作動手段５１による追い焚き報知動作は追い焚き燃焼
ランプ５４の点灯動作としたが、追い焚き燃焼ランプ５
４の追い焚き報知動作は、例えば点滅動作としてもよ
く、このように、追い焚き報知動作は適宜設定されるも
のである。In the above embodiment, the reheating operation by the reheating lamp operating means 51 is the lighting operation of the reheating combustion lamp 54.
The additional heating notification operation 4 may be, for example, a blinking operation, and the additional heating notification operation is appropriately set.
【００７８】さらに、上記実施形態例では、追い焚き運
転異常判断部４９を設け、追い焚き燃焼ランプ５４の追
い焚き報知動作開始から予め定められた時間内に追い焚
き流水検知手段５３によって追い焚き循環通路２４の湯
水の流れが検知されなかったときには、追い焚き異常信
号を出力するようにしたが、追い焚き運転異常判断部４
９は省略することもできる。Further, in the above-described embodiment, the reheating operation abnormality judging section 49 is provided, and the reheating recirculation by the reheating recirculating water detecting means 53 is performed within a predetermined time from the start of the reheating notification operation of the reheating combustion lamp 54. When the flow of hot and cold water in the passage 24 is not detected, a reheating abnormality signal is output.
9 can also be omitted.
【００７９】さらに、上記実施形態例では、追い焚き強
制停止手段４８と追い焚き異常報知手段５０を設け、追
い焚き単独運転異常判断部４９から追い焚き異常信号が
出力されたときに、追い焚き強制停止手段４８によって
追い焚き燃焼を強制的に停止させ、追い焚き異常報知手
段５０によって追い焚き燃焼運転の異常を報知するよう
にしたが、追い焚き強制停止手段４８と追い焚き異常報
知手段５０の一方又は両方を省略して本発明の一缶二水
路風呂給湯器を構成することもできる。Further, in the above-described embodiment, the additional heating forced stopping means 48 and the additional heating abnormality notification means 50 are provided, and when the additional heating abnormal signal is output from the additional heating independent operation abnormality judging unit 49, the additional heating forced operation is stopped. The refueling combustion is forcibly stopped by the stopping means 48 and the abnormality of the refueling combustion operation is reported by the refueling abnormality notification means 50. One of the refueling forced stopping means 48 and the reheating abnormality notification means 50 is used. Alternatively, both can be omitted to configure the one-can-two-channel bath water heater of the present invention.
【００８０】このように、追い焚き強制停止手段４８や
追い焚き異常報知手段５０を省略した場合にも、一缶二
水路風呂給湯器において、例えば追い焚き単独運転燃焼
制御部４５によって、上記実施形態例と同様に前記オフ
温度とオン温度に基づいてバーナー２の燃焼オン・オフ
制御を行うようにすれば、給湯熱交湯温センサ３３の検
出湯温がオフ温度以上になった以降にバーナー燃焼が引
き続き行われることはないために、追い焚き循環通路２
４の湯水の流れがないにも拘わらず、追い焚き燃焼運転
が引き続き行われて空焚きが行われるといった危険を回
避することができる。As described above, even when the reheating forced forcible stopping means 48 and the reheating abnormal notification means 50 are omitted, in the one-can-two-channel water heater, for example, the reheating independent operation combustion control unit 45 is used. As in the example, if the combustion on / off control of the burner 2 is performed based on the off temperature and the on temperature, the burner combustion is started after the hot water temperature detected by the hot water supply hot water temperature sensor 33 becomes higher than the off temperature. Recirculation passage 2
In spite of the fact that there is no flow of hot and cold water in 4, the danger that the reheating combustion operation is continuously performed and the empty firing is performed can be avoided.
【００８１】さらに、上記実施形態例では、追い焚き単
独運転中の給湯熱交換器３の湯温データの基準パターン
として、例えば図３の（ａ）に示したようなグラフデー
タを与えたが、基準パターンは、グラフデータの代わり
に、例えば、湯温データの波形の振幅、周期、湯温上昇
傾き、湯温下降傾き等をまとめた表データ等としてもよ
く、与えられる湯温データの基準パターンは適宜設定さ
れるものである。Furthermore, in the above-described embodiment, for example, graph data as shown in FIG. 3A is given as a reference pattern of the hot water temperature data of the hot water supply heat exchanger 3 during the reheating alone operation. Instead of the graph data, the reference pattern may be, for example, tabular data summarizing the amplitude, cycle, rising slope, falling slope, etc. of the waveform of the hot water data. Is set as appropriate.
【００８２】さらに、追い焚き流水検知手段５３によっ
て追い焚き循環通路２４の流水検知を行う方法は、上記
実施形態例で用いた方法に限定されることはなく、追い
焚き単独運転中に給湯熱交湯温センサ３３により検出さ
れる給湯熱交換器３の湯温データに基づいて追い焚き循
環通路２４の湯水の流れを検知したり、追い焚き運転と
給湯運転の同時使用時に出湯温度センサ３８によって検
出される給湯出湯温度変化に基づいて追い焚き循環通路
２４の湯水の流れを検知したりすればよく、追い焚き循
環通路２４の湯水の流れを検知する具体的な方法は適宜
設定されるものである。Further, the method of detecting the flowing water in the additional heating circulation passage 24 by the additional heating flowing water detecting means 53 is not limited to the method used in the above-described embodiment. Based on the hot water temperature data of the hot water supply heat exchanger 3 detected by the hot water temperature sensor 33, the flow of hot and cold water in the additional heating circulation passage 24 is detected, and the tap water temperature sensor 38 detects the simultaneous use of the additional heating operation and the hot water supply operation. What is necessary is just to detect the flow of hot and cold water in the additional heating circulation passage 24 based on the change in the hot water supply and outlet temperature, and a specific method for detecting the flow of hot and cold water in the additional heating circulation passage 24 is appropriately set. .
【００８３】また、上記実施形態例では、追い焚き流水
検知手段５３によって、追い焚き単独運転中と、追い焚
き運転および給湯運転の同時使用時の追い焚き循環通路
２４の湯水の流れを検知するようにしたが、追い焚き流
水検知手段５３は、例えば追い焚き単独運転中にのみ追
い焚き循環通路２４の湯水の流れを検知するようにして
もよい。Further, in the above embodiment, the flow of the hot water in the additional heating circulation passage 24 is detected by the additional heating flowing water detection means 53 during the additional heating alone operation and during the simultaneous use of the additional heating operation and the hot water supply operation. However, the reheating steam flowing water detecting means 53 may detect the flow of hot water in the reheating circulation passage 24 only during the reheating alone operation, for example.
【００８４】さらに、上記実施形態例では、追い焚き指
示が与えられたときに、追い焚き燃焼強制開始手段４６
により、循環ポンプ２０を直接駆動させたが、例えば追
い焚き燃焼強制開始手段４６により燃焼制御部４２にポ
ンプ駆動指令を加え、この指令によって、燃焼制御部４
２により循環ポンプ２０を駆動させるようにしてもよ
い。Further, in the above embodiment, when the reheating instruction is given, the reheating combustion forced starting means 46
Directly drives the circulating pump 20. For example, a pump drive command is added to the combustion control unit 42 by the reburning combustion forced starting means 46, and the combustion control unit 4
2, the circulation pump 20 may be driven.
【００８５】さらに、上記実施形態例では、追い焚き燃
焼強制開始手段４６を設け、リモコン４１から追い焚き
指示が加えられたときに、循環ポンプ２０を駆動させる
とともに、追い焚き循環通路２４の流れを検知せずにバ
ーナー燃焼運転を直ちに開始させるようにしたが、追い
焚き燃焼強制開始手段４６は省略することもできる。Further, in the above embodiment, the reheating combustion forced start means 46 is provided, and when the reheating instruction is given from the remote controller 41, the circulation pump 20 is driven and the flow of the reheating circulation passage 24 is controlled. Although the burner combustion operation is started immediately without detection, the reburning combustion forced start means 46 may be omitted.
【００８６】さらに、上記実施形態例では、追い焚き単
独運転燃焼制御部４５は、追い焚き単独運転中に給湯熱
交湯温センサ３３により検出される給湯熱交換器３の湯
温がオフ温度以上になったときにはバーナー２の燃焼を
停止させ、給湯熱交換器３の湯温がオン温度以下になっ
たときにはバーナー２の燃焼を再開させるようにした
が、追い焚き単独運転燃焼制御部４５は、前記給湯熱交
換器３の湯温がバーナーの燃焼能力を低下させる設定温
度以上になったときにはバーナー２の燃焼能力を低下さ
せ、給湯熱交換器３の湯温がバーナーの燃焼能力を増加
させる設定温度以下になったときにはバーナー２の燃焼
能力を増加させるようにしてもよい。Further, in the above-described embodiment, the reheating alone operation combustion control section 45 determines that the hot water temperature of the hot water supply heat exchanger 3 detected by the hot water supply hot water temperature sensor 33 during the additional reheating alone operation is equal to or higher than the OFF temperature. , The combustion of the burner 2 is stopped, and when the hot water temperature of the hot water supply heat exchanger 3 becomes lower than the ON temperature, the combustion of the burner 2 is restarted. When the hot water temperature of the hot water supply heat exchanger 3 becomes equal to or higher than the set temperature at which the burnability of the burner is reduced, the burnability of the burner 2 is lowered, and the hot water temperature of the hot water supply heat exchanger 3 increases the burnability of the burner. When the temperature falls below the temperature, the combustion capacity of the burner 2 may be increased.
【００８７】さらに、上記実施形態例では、給湯熱交湯
温センサ３３は給湯熱交換器３のＵ字管に設けられてい
たが、図７の鎖線に示すように、給湯熱交換器３の出側
に設けるようにしてもよい。Further, in the above embodiment, the hot water supply hot water temperature sensor 33 is provided in the U-shaped tube of the hot water supply heat exchanger 3, but as shown by the dashed line in FIG. It may be provided on the exit side.
【００８８】さらに、上記実施形態例では、給湯熱交換
器３の湯温を給湯熱交湯温センサ３３から直接的に検出
していたが、上記給湯熱交換器３の湯温は排気温度に基
づき間接的に検出することが可能であることから、排気
温度と給湯熱交換器３の湯温との関係データを予め実験
や演算等により求めて与えておき、その関係データと排
気温度によって給湯熱交換器３の湯温を間接的に検出す
る給湯熱交換器湯温検出手段を設けるようにしてもよ
い。より望ましくは、上記関係データと排気温度に基づ
き検出した給湯熱交換器湯温を、風呂温度センサ３７に
より検出される追い焚き循環通路の湯温や、予め定まる
追い焚き循環湯量や、給気温度を考慮して補正すること
によって、より正確な給湯熱交換器３の湯温を検出する
ことが可能である。Further, in the above embodiment, the hot water temperature of the hot water supply heat exchanger 3 is directly detected from the hot water supply hot water temperature sensor 33, but the hot water temperature of the hot water supply heat exchanger 3 is reduced to the exhaust gas temperature. Since it is possible to indirectly detect the hot water, the relation data between the exhaust gas temperature and the hot water temperature of the hot water supply heat exchanger 3 is obtained in advance through experiments, calculations, and the like, and given. A hot water supply heat exchanger hot water temperature detecting means for indirectly detecting the hot water temperature of the heat exchanger 3 may be provided. More preferably, the hot-water supply heat exchanger hot-water temperature detected based on the above-mentioned relational data and the exhaust temperature is used as the hot-water circulation passage temperature detected by the bath temperature sensor 37, a predetermined hot-fired circulation hot water amount, and the supply air temperature. In consideration of the above, it is possible to detect the hot water temperature of the hot water supply heat exchanger 3 more accurately.
【００８９】さらに、上記実施形態例では、流水スイッ
チ３６を省略したが、流水スイッチ３６を設けて一缶二
水路風呂給湯器を構成しても構わない。Further, in the above embodiment, the running water switch 36 is omitted. However, the running water switch 36 may be provided to constitute a one-can-two-channel bath water heater.
【００９０】さらに、上記各実施形態例は図７に示す一
缶二水路風呂給湯器を例にして説明したが、一缶二水路
タイプで、給湯機能と追い焚き機能を備えている一缶二
水路風呂給湯器であれば、この発明を適用することがで
きる。Further, each of the above embodiments has been described with reference to the one-can-two-channel bath water heater shown in FIG. 7 as an example. However, the one-can-two-channel water heater having a hot-water supply function and a reheating function is provided. The present invention can be applied to a channel bath water heater.
【００９１】さらに、本発明は、上記実施形態例のよう
な一缶二水路風呂給湯器にのみ適用されるとは限らず、
例えば図９に示したような給湯暖房機等のように、給湯
熱交換器３と、循環ポンプ２０を備えた非給湯側循環通
路に組み込まれ非給湯側循環通路を循環する熱媒体を加
熱する非給湯側熱交換器等を有し、給湯熱交換器と非給
湯側熱交換器が一体化され、給湯熱交換器と非給湯側熱
交換器を共通に加熱するバーナーが設けられており、給
湯運転機能と非給湯側熱交換器を有する様々な一缶二水
路給湯器に広く適用されるものである。Further, the present invention is not limited to being applied only to the one-can-two-channel bath water heater as in the above embodiment.
For example, as in a hot water supply / room heater as shown in FIG. 9, a heat medium that is incorporated in a non-hot water supply side circulation passage provided with a hot water supply heat exchanger 3 and a circulation pump 20 and circulates in the non-hot water supply side circulation passage is heated. It has a non-hot water supply side heat exchanger, etc., the hot water supply heat exchanger and the non-hot water supply side heat exchanger are integrated, and a burner that heats the hot water supply heat exchanger and the non-hot water supply side heat exchanger in common is provided. It is widely applied to various one-can two-channel water heaters having a hot water supply operation function and a non-hot water supply side heat exchanger.
【００９２】[0092]
【発明の効果】本発明によれば、非給湯側ランプ作動手
段を設け、非給湯側運転指示が与えられたときに、循環
ポンプを駆動させるとともに直ちに非給湯側燃焼ランプ
を報知動作開始させたり、非給湯側運転指示が与えられ
てから循環ポンプの駆動後、非給湯側循環通路の熱媒体
の流れを検知せずに開始されるバーナーの燃焼が確認さ
れたときに、直ちに非給湯側燃焼ランプを報知動作開始
させるようにしたものであるから、非給湯側循環通路の
熱媒体の流れを検知した後にバーナー燃焼運転を開始
し、このバーナーの燃焼が確認されたときに非給湯側燃
焼ランプを報知動作開始させていた従来の給湯器と異な
り、非給湯側運転指示が与えられてから非常に短時間で
非給湯側燃焼ランプを報知動作開始させることができ
る。According to the present invention, the non-hot water supply side lamp operating means is provided, and when the non-hot water supply side operation instruction is given, the circulating pump is driven and the non-hot water supply side combustion lamp is immediately notified. After the non-hot-water supply side operation instruction is given, after the circulation pump is driven, when the burner combustion started without detecting the flow of the heat medium in the non-hot-water supply side circulation passage is confirmed, the non-hot-water supply side combustion is immediately performed. Since the notification operation of the lamp is started, the burner combustion operation is started after detecting the flow of the heat medium in the non-hot water supply side circulation passage, and when the combustion of the burner is confirmed, the non-hot water supply combustion lamp is activated. Unlike the conventional water heater in which the notification operation is started, the notification operation of the non-hot water supply side combustion lamp can be started in a very short time after the non-hot water supply side operation instruction is given.
【００９３】そのため、給湯器の利用者が、例えばリモ
コンの追い焚きスイッチなどを操作して追い焚き等の非
給湯側運転指示を与えたにもかかわらず、非給湯側燃焼
ランプがなかなか動作しないために、給湯器の故障では
ないかと誤判断して不安になるといった問題を解消する
ことが可能となり、利用者が安心して利用できる一缶二
水路給湯器とすることができる。For this reason, the non-hot water supply side combustion lamp does not easily operate even though the user of the water heater has operated a non-hot water supply side operation instruction such as reheating by operating a reheating switch of a remote controller, for example. In addition, it is possible to solve the problem that the user is nervous because of the erroneous determination that the water heater is malfunctioning, and a one-can-two-channel water heater that can be used by the user with peace of mind can be provided.
【００９４】また、給湯熱交換器の湯温を検出する給湯
熱交換器湯温検出手段と、給湯が行われず非給湯側運転
のみを行う非給湯側単独運転中に該給湯熱交換器湯温検
出手段により検出される給湯熱交換器の湯温がバーナー
燃焼を停止させる設定温度以上になったときにはバーナ
ーの燃焼を停止させ、上記給湯熱交換器の湯温がバーナ
ー燃焼を再開させる設定温度以下になったときにはバー
ナーの燃焼を再開させる非給湯側単独運転燃焼制御部と
が設けられている本発明によれば、非給湯側運転中の給
湯熱交換器の湯温と上記各設定温度に基づいてバーナー
の燃焼のオン・オフ制御を行うことにより、非給湯側単
独運転中に給湯熱交換器の滞留湯がオフ温度を大幅に越
えて高温になり、高温出湯を招くといったおそれを回避
することができる。また、非給湯側循環通路の熱媒体の
流れがないときには、給湯熱交換器の湯温がすぐにバー
ナー燃焼を停止させる設定温度に達してバーナー燃焼が
停止されるために、バーナー給湯熱交換器の湯温がこの
設定温度に達するまでのほんのわずかな時間しか非給湯
側燃焼が行われず、非給湯側熱交換器の空焚きを防止す
ることができる。Further, a hot water supply heat exchanger hot water temperature detecting means for detecting the hot water temperature of the hot water supply heat exchanger, and the hot water supply heat exchanger hot water temperature during the non-hot water supply side alone operation in which only the non-hot water supply side operation is performed without hot water supply. When the hot water temperature of the hot water supply heat exchanger detected by the detecting means is equal to or higher than a set temperature for stopping burner combustion, the burner combustion is stopped, and the hot water temperature of the hot water supply heat exchanger is lower than a set temperature for restarting burner combustion. According to the present invention, which is provided with the non-hot-water-supply-side independent operation combustion control unit that restarts the combustion of the burner when the temperature becomes, the hot-water supply heat exchanger in the non-hot-water supply-side operation and the above-mentioned respective set temperatures are used. By controlling the burner combustion on and off, it is possible to avoid the risk that the hot water in the hot water supply heat exchanger becomes significantly hotter than the off-temperature during the non-hot water supply side alone operation, resulting in high-temperature tapping. Can Further, when there is no flow of the heat medium in the non-hot water supply side circulation passage, the temperature of the hot water in the hot water supply heat exchanger immediately reaches the set temperature for stopping the burner combustion, and the burner combustion is stopped. The non-hot water supply side combustion is performed only for a short time until the hot water temperature reaches the set temperature, and the non-hot water supply side heat exchanger can be prevented from being idle.
【００９５】さらに、給湯熱交換器の湯温を検出する給
湯熱交換器湯温検出手段と給湯が行われず非給湯側運転
のみを行う非給湯側単独運転中に該給湯熱交換器湯温検
出手段により検出される給湯熱交換器の湯温がバーナー
燃焼能力を低下させる設定温度以上になったときにはバ
ーナーの燃焼能力を低下させ、上記給湯熱交換器の湯温
がバーナー燃焼能力を増加させる設定温度以下になった
ときにはバーナーの燃焼能力を増加させる非給湯側単独
運転燃焼制御部とが設けられている本発明によれば、給
湯熱交換器の湯温に基づいて、非給湯側単独運転燃焼制
御部によってバーナーの燃焼能力の増加と低下の制御を
行うことにより、バーナー燃焼のオン・オフ制御を行う
場合と同様の効果を奏することができる。Further, the hot water supply heat exchanger hot water temperature detecting means for detecting the hot water temperature of the hot water supply heat exchanger and the hot water supply heat exchanger hot water temperature detection during the non-hot water supply side alone operation in which only the non-hot water supply side operation is performed without hot water supply. When the hot water temperature of the hot water supply heat exchanger detected by the means becomes equal to or higher than the set temperature at which the burner combustion performance is reduced, the burner combustion performance is reduced, and the hot water temperature of the hot water supply heat exchanger increases the burner combustion performance. According to the present invention, there is provided the non-hot-water-supply-side independent operation combustion control unit that increases the combustion capacity of the burner when the temperature falls below the temperature. By controlling the increase and decrease of the combustion capacity of the burner by the control unit, the same effect as in the case of performing on / off control of burner combustion can be obtained.
【００９６】さらに、非給湯側単独運転中の給湯熱交換
器の湯温データに基づいて非給湯側循環通路の熱媒体の
流れを検知する非給湯側流れ検知手段や、給湯運転中に
非給湯側指示が与えられたときの給湯出湯温度変化に基
づいて非給湯側循環通路の熱媒体の流れを検知する非給
湯側流れ検知手段を設け、非給湯側燃焼ランプの報知動
作開始から予め定められた時間内に非給湯側流れ検知手
段によって非給湯側循環通路の熱媒体の流れが検知され
なかったときには、非給湯側燃焼ランプの報知動作を停
止させる非給湯側燃焼ランプ停止手段を設けた本発明に
よれば、非給湯側循環通路の熱媒体の流れが検知されな
かったときに、前記予め定められた時間経過時に非給湯
側燃焼ランプの報知動作を停止させることにより、例え
ば非給湯側循環通路に熱媒体がないといった異常に対す
る給湯器の利用者の注意を促すことができる。Further, a non-hot-water supply side flow detecting means for detecting the flow of the heat medium in the non-hot-water supply side circulation passage based on the hot-water temperature data of the hot-water supply heat exchanger during the non-hot-water supply alone operation, A non-hot water supply flow detecting means for detecting a flow of the heat medium in the non-hot water supply side circulation passage based on a change in the hot water supply / outlet temperature when the side instruction is given; The non-hot water supply side combustion lamp stopping means for stopping the notification operation of the non-hot water supply side combustion lamp when the flow of the heat medium in the non-hot water supply side circulation passage is not detected by the non-hot water supply side circulation passage within the set time. According to the invention, when the flow of the heat medium in the non-hot-water supply side circulation passage is not detected, the notification operation of the non-hot-water supply side combustion lamp is stopped when the predetermined time elapses, for example, the non-hot-water supply side circulation Through Note water heater of the user with respect to abnormalities such that no heat medium can be promoted to.
【００９７】さらに、非給湯側燃焼ランプの報知動作開
始から予め定められた時間内に、非給湯側流れ検知手段
によって非給湯側循環通路の熱媒体の流れが検知されな
かったときには非給湯側異常信号を出力する非給湯側運
転異常判断部が設けられている本発明によれば、非給湯
側運転異常判断部により出力される非給湯側異常信号を
利用して、例えば、非給湯側運転を強制的に停止させた
り、非給湯側運転の異常を報知させたりすることが可能
となる。そして、非給湯側運転を強制的に停止させる非
給湯側強制停止手段を設けることにより、非給湯側循環
通路に熱媒体がない、又は熱媒体の流れがないときに非
給湯側運転を強制的に停止させることにより、一缶二水
路給湯器の安全性をより一層向上させることが可能とな
る。Further, if the flow of the heat medium in the non-hot water supply side circulation passage is not detected by the non-hot water supply side flow detecting means within a predetermined time from the start of the notification operation of the non-hot water supply side combustion lamp, the non-hot water supply side abnormality is detected. According to the present invention in which the non-hot water supply side operation abnormality determination unit that outputs the signal is provided, for example, the non-hot water supply side operation is performed by using the non-hot water supply side abnormality signal output by the non-hot water supply side abnormality determination unit. It is possible to forcibly stop the operation or to notify an abnormality of the non-hot water supply side operation. And by providing the non-hot water supply side forced stop means for forcibly stopping the non-hot water supply side operation, the non-hot water supply side operation is forcibly performed when there is no heat medium in the non-hot water supply side circulation passage or when there is no flow of the heat medium. Thus, the safety of the one-can-two-channel water heater can be further improved.
【００９８】また、非給湯側運転の異常を報知する非給
湯側異常報知手段を設けることにより、非給湯側運転の
異常を報知して、給湯器の利用者に注意を促すことがで
きる。Further, by providing the non-hot water supply side abnormality notification means for notifying the non-hot water supply side operation abnormality, it is possible to notify the non-hot water supply side operation abnormality and alert the user of the water heater.
【００９９】さらに、非給湯側循環通路は追い焚き循環
通路とし、非給湯側熱交換器は追い焚き熱交換器とし、
上記追い焚き循環通路を循環する熱媒体は湯水とし、給
湯側の運転は風呂の追い焚き運転とした本発明によれ
ば、以上のような優れた効果を奏する一缶二水路風呂給
湯器を提供することができる。Further, the non-hot-water supply-side circulation passage is a reheat-fired circulation passage, and the non-hot-water supply-side heat exchanger is a reheating heat exchanger.
According to the present invention, the heat medium circulating in the reheating circulation passage is hot water, and the operation on the hot water supply side is the reheating operation of the bath. According to the present invention, a one-can two-channel water heater with excellent effects as described above is provided. can do.
【図１】本発明に係る一缶二水路給湯器の一実施形態例
の制御構成を示すブロック図である。FIG. 1 is a block diagram showing a control configuration of an embodiment of a one-can, two-channel water heater according to the present invention.
【図２】上記実施形態例の追い焚き運転動作を示すフロ
ーチャートである。FIG. 2 is a flowchart showing a reheating operation of the embodiment.
【図３】上記実施形態例の一缶二水路給湯器において、
追い焚き単独運転燃焼制御部４５によって給湯熱交換器
の温度とオフ温度とオン温度に基づきバーナーのオン・
オフ燃焼制御を行ったときの、給湯熱交換器湯温データ
の例を示すグラフである。FIG. 3 shows a one-can two-channel water heater according to the embodiment of the present invention.
On-off operation of the burner based on the temperature of the hot water supply heat exchanger, the OFF temperature and the ON temperature by the reheating independent operation combustion control unit 45.
It is a graph which shows the example of hot-water supply heat exchanger hot-water temperature data at the time of performing off combustion control.
【図４】上記実施形態例の一缶二水路給湯器において、
追い焚き循環通路に湯水がない、又は湯水の流れがない
ときに、追い焚き単独運転燃焼制御部４５によって、上
記バーナーのオン・オフ燃焼制御動作を行ったときの給
湯熱交換器の湯温データを示すグラフである。FIG. 4 shows a one-can two-channel water heater of the above embodiment.
Hot water data of the hot water supply heat exchanger when the on-off combustion control operation of the burner is performed by the independent heating combustion control unit 45 when there is no hot water or no hot water flow in the reheating circulation passage. FIG.
【図５】給湯運転中に追い焚き運転が開始されたとき
に、追い焚き循環通路の湯水の流れがあるときに生じる
給湯出湯温度変化の一例を示すグラフである。FIG. 5 is a graph showing an example of a hot water supply / outflow temperature change that occurs when hot water is flowing through the additional heating circulation passage when the additional heating operation is started during the hot water supply operation.
【図６】本発明に係る一缶二水路給湯器の他の実施形態
例の追い焚き運転動作を示すフローチャートである。FIG. 6 is a flowchart showing a reheating operation of another embodiment of the one-can, two-channel water heater according to the present invention.
【図７】一缶二水路風呂給湯器のモデル例を示すシステ
ム構成図である。FIG. 7 is a system configuration diagram showing a model example of a one-can two-channel bath water heater.
【図８】従来の一缶二水路風呂給湯器の動作を示すフロ
ーチャートである。FIG. 8 is a flowchart showing the operation of the conventional one-can, two-channel bath water heater.
【図９】一缶二水路給湯器としての暖房給湯機のシステ
ム構成例の要部説明図である。FIG. 9 is an explanatory diagram of a main part of a system configuration example of a heating water heater as a one-can two-channel water heater.
３ 給湯熱交換器 ２４ 追い焚き循環通路 ３３ 給湯熱交湯温センサ ４４ データ格納部 ４５ 追い焚き単独燃焼制御部 ４６ 追い焚き燃焼強制開始手段 ４８ 追い焚き強制停止手段 ４９ 追い焚き運転異常判断 ５０ 追い焚き異常報知手段 ５１ 追い焚きランプ作動手段 ５２ 追い焚きランプ停止手段 ５３ 追い焚き流水検知手段 ５４ 追い焚き燃焼ランプ 3 Hot Water Heat Exchanger 24 Reheating Circulation Passage 33 Hot Water Supply Hot Water Temperature Sensor 44 Data Storage Unit 45 Reheating Single Combustion Control Unit 46 Reheating Combustion Compulsory Start Means 48 Reheating Compulsory Stopping Unit 49 Reheating Operation Abnormality Judgment 50 Reheating Abnormality notification means 51 Reheating lamp operating means 52 Reheating lamp stopping means 53 Reheating flowing water detecting means 54 Reheating burning lamp
Claims (10)
路に湯を供給する給湯熱交換器と、循環ポンプを備えた
非給湯側循環通路に組み込まれ該非給湯側循環通路を循
環する熱媒体を加熱する非給湯側熱交換器とを有し、上
記給湯熱交換器と非給湯側熱交換器は一体化され、上記
給湯熱交換器と非給湯熱交換器を共通に加熱するバーナ
ーが設けられている一缶二水路給湯器において、非給湯
側運転指示が与えられたときに上記循環ポンプを駆動さ
せるとともに直ちに非給湯側燃焼ランプを報知動作開始
させる非給湯側ランプ作動手段が設けられていることを
特徴とする一缶二水路給湯器。1. A hot water supply heat exchanger that heats water guided from a water supply passage and supplies hot water to the hot water supply passage, and heat that is incorporated in a non-hot water supply side circulation passage provided with a circulation pump and circulates in the non-hot water supply side circulation passage. A non-hot water supply heat exchanger for heating the medium, the hot water supply heat exchanger and the non-hot water supply heat exchanger are integrated, and a burner that heats the hot water supply heat exchanger and the non-hot water supply heat exchanger in common is provided. In the provided one-can two-channel water heater, there is provided a non-hot water supply lamp operating means for driving the circulation pump when a non-hot water supply side operation instruction is given, and immediately starting a notification operation of the non-hot water supply side combustion lamp. A one-can, two-channel water heater.
環ポンプを駆動させるとともに非給湯側循環通路の熱媒
体の流れを検知せずにバーナー燃焼運転を直ちに開始さ
せる非給湯側燃焼強制開始手段を有し、非給湯側ランプ
作動手段は、非給湯側運転指示が与えられてからバーナ
ーの燃焼が確認されたときに直ちに非給湯側燃焼ランプ
を報知動作開始させる構成としたことを特徴とする請求
項１記載の一缶二水路給湯器。2. A non-hot-water supply forced start, in which a circulation pump is driven when a non-hot-water supply side operation instruction is given and a burner combustion operation is immediately started without detecting a flow of a heat medium in a non-hot-water supply side circulation passage. The non-hot water supply side lamp operating means is configured to immediately start the notification operation of the non-hot water supply side combustion lamp when the burner combustion is confirmed after the non-hot water supply side operation instruction is given. The one-can two-channel water heater according to claim 1.
換器湯温検出手段と、給湯が行われず非給湯側運転のみ
を行う非給湯側単独運転中に該給湯熱交換器湯温検出手
段により検出される給湯熱交換器の湯温がバーナー燃焼
を停止させる設定温度以上になったときにはバーナーの
燃焼を停止させ、上記給湯熱交換器の湯温がバーナー燃
焼を再開させる設定温度以下になったときにはバーナー
の燃焼を再開させる非給湯側単独運転燃焼制御部とが設
けられていることを特徴とする請求項１又は請求項２記
載の一缶二水路給湯器。3. A hot-water supply heat exchanger hot-water temperature detecting means for detecting hot-water temperature of a hot-water supply heat exchanger, and a hot-water supply heat exchanger hot-water temperature during non-hot-water supply side alone operation in which hot water is not supplied and only non-hot-water supply side operation is performed. When the hot water temperature of the hot water supply heat exchanger detected by the detecting means is equal to or higher than a set temperature for stopping burner combustion, the burner combustion is stopped, and the hot water temperature of the hot water supply heat exchanger is lower than a set temperature for restarting burner combustion. The one-can two-channel water heater according to claim 1 or 2, further comprising a non-hot-water-supply-side independent operation combustion control unit that restarts combustion of the burner when the pressure becomes zero.
換器湯温検出手段と、給湯が行われず非給湯側運転のみ
を行う非給湯側単独運転中に該給湯熱交換器湯温検出手
段により検出される給湯熱交換器の湯温がバーナー燃焼
能力を低下させる設定温度以上になったときにはバーナ
ーの燃焼能力を低下させ、上記給湯熱交換器の湯温がバ
ーナー燃焼能力を増加させる設定温度以下になったとき
にはバーナーの燃焼能力を増加させる非給湯側単独運転
燃焼制御部とが設けられていることを特徴とする請求項
１又は請求項２記載の一缶二水路給湯器。4. A hot-water supply heat exchanger hot-water temperature detecting means for detecting hot-water temperature of a hot-water supply heat exchanger, and a hot-water supply heat exchanger hot-water temperature during non-hot-water supply side alone operation in which hot water is not supplied and only non-hot-water supply side operation is performed. When the hot water temperature of the hot water supply heat exchanger detected by the detecting means is equal to or higher than a set temperature at which the burner combustion performance is reduced, the burner combustion performance is reduced, and the hot water temperature of the hot water supply heat exchanger increases the burner combustion performance. The single-can two-channel water heater according to claim 1 or 2, further comprising a non-hot-water-supply-side independent operation combustion control unit for increasing the combustion capacity of the burner when the temperature falls below a set temperature.
検出手段により検出される給湯熱交換器の湯温データに
基づいて非給湯側循環通路の熱媒体の流れを検知する非
給湯側流れ検知手段が設けられており、非給湯側燃焼ラ
ンプの報知動作開始から予め定められた時間内に該非給
湯側流れ検知手段によって非給湯側循環通路の熱媒体の
流れが検知されなかったときには非給湯側燃焼ランプの
報知動作を停止させる非給湯側ランプ停止手段が設けら
れていることを特徴とする請求項３又は請求項４記載の
一缶二水路給湯器。5. A non-hot water supply system for detecting a flow of a heat medium in a non-hot water supply side circulation passage based on hot water temperature data of a hot water supply heat exchanger detected by a hot water supply heat exchanger hot water temperature detection means during a non-hot water supply side independent operation. When the flow of the heat medium in the non-hot water supply side circulation passage is not detected by the non-hot water supply side flow detection means within a predetermined time from the start of the notification operation of the non-hot water supply side combustion lamp, The one-can two-channel water heater according to claim 3 or 4, further comprising a non-hot water supply lamp stopping means for stopping a notification operation of the non-hot water supply combustion lamp.
検出手段を有し、給湯運転中に非給湯側運転指示が与え
られたときに該給湯出湯温度検出手段によって検出され
る給湯出湯温度変化に基づいて非給湯側循環通路の熱媒
体の流れを検知する非給湯側流れ検知手段が設けられて
おり、非給湯側燃焼ランプの報知動作開始から予め定め
られた時間内に該非給湯側流れ検知手段によって非給湯
側循環通路の熱媒体の流れが検知されなかったときには
非給湯側燃焼ランプの報知動作を停止させる非給湯側ラ
ンプ停止手段が設けられていることを特徴とする請求項
１乃至請求項５のいずれか１つに記載の一缶二水路給湯
器。6. A hot-water supply / outdoor temperature detection means for detecting a hot-water supply / outflow temperature of the hot-water supply, and a change in the hot-water supply / outlet temperature detected by the hot-water supply / outlet temperature detection means when a non-hot water supply side operation instruction is given during the hot water supply operation The non-hot-water supply side flow detecting means for detecting the flow of the heat medium in the non-hot-water supply side circulation passage based on the non-hot-water supply side combustion lamp is provided within a predetermined time from the start of the notification operation of the non-hot water supply side combustion lamp. A non-hot water supply lamp stopping means for stopping a notification operation of the non-hot water supply side combustion lamp when the flow of the heat medium in the non-hot water supply side circulation passage is not detected by the means. Item 6. A one-can two-channel water heater according to any one of Items 5.
予め定められた時間内に非給湯側流れ検知手段によって
非給湯側循環通路の熱媒体の流れが検知されなかったと
きには非給湯側異常信号を出力する非給湯側運転異常判
断部が設けられていることを特徴とする請求項５又は請
求項６記載の一缶二水路給湯器。7. A non-hot water supply side abnormal signal when the flow of the heat medium in the non-hot water supply side circulation passage is not detected by the non-hot water supply side flow detecting means within a predetermined time from the start of the notification operation of the non-hot water supply side combustion lamp. The one-can two-channel water heater according to claim 5 or 6, further comprising a non-hot water supply side operation abnormality judging unit for outputting the output.
常信号が出力されたときに非給湯側運転を強制的に停止
させる非給湯側強制停止手段が設けられていることを特
徴とする請求項７記載の一缶二水路給湯器。8. A non-hot water supply side forced stop means for forcibly stopping the non-hot water supply side operation when the non-hot water supply side abnormality signal is output from the non-hot water supply side operation abnormality determination section. The one-tank two-channel water heater according to claim 7.
常信号が出力されたときに非給湯側運転の異常を報知す
る非給湯側異常報知手段が設けられていることを特徴と
する請求項７又は請求項８記載の一缶二水路給湯器。9. A non-hot water supply side abnormality notification means for notifying an abnormality of the non-hot water supply side operation when a non-hot water supply side abnormality signal is output from the non-hot water supply side abnormality determination section. Item 10. A one-can two-channel water heater according to item 7 or 8.
とし、非給湯側熱交換器は追い焚き熱交換器とし、上記
追い焚き循環通路を循環する熱媒体は湯水とし、給湯側
の運転は風呂の追い焚き運転としたことを特徴とする請
求項１乃至請求項９のいずれか１つに記載の一缶二水路
給湯器。10. The non-hot water supply side circulation passage is a reheating heating circulation passage, the non-hot water supply side heat exchanger is a reheating heating heat exchanger, the heat medium circulating in the reheating heating circulation passage is hot water, and the operation of the hot water supply side is as follows. The one-can two-channel water heater according to any one of claims 1 to 9, wherein a reheating operation of the bath is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33776697A JP3926909B2 (en) | 1997-11-21 | 1997-11-21 | One can two water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33776697A JP3926909B2 (en) | 1997-11-21 | 1997-11-21 | One can two water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11153350A true JPH11153350A (en) | 1999-06-08 |
| JP3926909B2 JP3926909B2 (en) | 2007-06-06 |
Family
ID=18311770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33776697A Expired - Lifetime JP3926909B2 (en) | 1997-11-21 | 1997-11-21 | One can two water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3926909B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009133574A (en) * | 2007-11-30 | 2009-06-18 | Daikin Ind Ltd | Water heater |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101793466B1 (en) * | 2016-04-25 | 2017-11-06 | 린나이코리아 주식회사 | When using the dishwasher rinse temperature hot water can prevent deterioration method |
-
1997
- 1997-11-21 JP JP33776697A patent/JP3926909B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009133574A (en) * | 2007-11-30 | 2009-06-18 | Daikin Ind Ltd | Water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3926909B2 (en) | 2007-06-06 |
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