JP2002162101A - Hot water supplying apparatus with reheating of bathtub water - Google Patents

Hot water supplying apparatus with reheating of bathtub water

Info

Publication number
JP2002162101A
JP2002162101A JP2000361623A JP2000361623A JP2002162101A JP 2002162101 A JP2002162101 A JP 2002162101A JP 2000361623 A JP2000361623 A JP 2000361623A JP 2000361623 A JP2000361623 A JP 2000361623A JP 2002162101 A JP2002162101 A JP 2002162101A
Authority
JP
Japan
Prior art keywords
hot water
water supply
heating
heat exchanger
heat
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
Application number
JP2000361623A
Other languages
Japanese (ja)
Other versions
JP3655189B2 (en
Inventor
Yukihiro Suzuki
幸弘 鈴木
Ikuro Adachi
郁朗 足立
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rinnai Corp
Original Assignee
Rinnai Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rinnai Corp filed Critical Rinnai Corp
Priority to JP2000361623A priority Critical patent/JP3655189B2/en
Publication of JP2002162101A publication Critical patent/JP2002162101A/en
Application granted granted Critical
Publication of JP3655189B2 publication Critical patent/JP3655189B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Control Of Combustion (AREA)
  • Control For Baths (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a hot water supply apparatus capable of precisely controlling temperature of hot water, with which a bathtub is filled, through simple processing, in a one- can two-aqueduct type hot water supply apparatus with reheating of bathtub water. SOLUTION: A controller 4 executed reheating of bathtub water heated by a reheating of bathtub water heat-exchanger 7 through circulation of hot water, stored in a bathtub 4, through a reheating of bathtub water line 3, hot water supply operation to supply hot water heated by heating water, flowing through a hot water supply line 2, by a hot water supply heat exchanger 8, and hot water filling operation to supply hot water in a bathtub through a hot water filling relay pipe 30 and a reheating of bathtub water line 3. The controller 4 decides combustion amounts of a first burner 5 and a second burner 6 during hot water filling operation by using heat exchanger data corresponding to a case in which hot water supply operation and reheating of bathtub water operation are simultaneously executed, and controls the temperature of hot water with which a bathtub 4 is filled.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、給湯用の熱交換器
と追焚き用の熱交換器の一部が重複した、いわゆる一缶
二水路式の追焚き付き給湯器における湯張り制御に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to hot water filling control in a so-called one-can, two-channel water heater with reheating in which a part of a heat exchanger for hot water supply and a part of a heat exchanger for reheating are overlapped.

【0002】[0002]

【従来の技術】近年、省スペースの目的から、給湯用熱
交換器と追焚き用熱交換器の一部を重複させて設置した
いわゆる一缶二水路式の追焚き付き給湯器が開発されて
いる。かかる給湯器においては、一端が水道と接続され
て水道から供給される水を給湯用熱交換器で加熱して他
端から湯を供給する給湯管路と、両端が浴槽と連通され
て、浴槽に滞留した湯水を前記追焚き熱交換器で加熱し
ながら循環させるための追焚き管路とが備えられてい
る。
2. Description of the Related Art In recent years, for the purpose of saving space, a so-called one-can-two-channel water heater with reheating has been developed in which a part of a heat exchanger for hot water supply and a part of a heat exchanger for reheating are overlapped. I have. In such a water heater, one end is connected to the water supply, and the water supplied from the water supply is heated by the hot water supply heat exchanger to supply the hot water from the other end, and both ends are connected to the bathtub, and the bathtub is connected to the bathtub. And a reheating pipe line for circulating the hot water retained in the tank while being heated by the reheating heat exchanger.

【0003】そして、給湯を行う場合には、給湯管路か
ら供給される湯の温度が所定の目標温度となるように給
湯熱交換器の加熱量が決定されてフィードフォワード制
御される。また、給湯管路から供給される湯の温度を検
出する給湯温度センサが設けられ、該給湯温度センサの
検出温度が目標給湯温度と一致するように加熱量がフィ
ードバック制御によりさらに微調整される。
[0003] When hot water is supplied, the amount of heating of the hot water supply heat exchanger is determined so that the temperature of hot water supplied from the hot water supply pipe reaches a predetermined target temperature, and feedforward control is performed. Further, a hot water supply temperature sensor for detecting the temperature of hot water supplied from the hot water supply pipe is provided, and the heating amount is further finely adjusted by feedback control so that the detected temperature of the hot water supply temperature sensor matches the target hot water supply temperature.

【0004】かかる追焚き付き給湯器において、給湯管
路と追焚き管路とを連通させる湯張り中継管を設けて、
給湯管路から該湯張り中継管と追焚き管路とを介して浴
槽に湯張りするようにした給湯器が提案されている。
In such a water heater with reheating, a hot water relay pipe for communicating the hot water supply line with the reheating line is provided.
There has been proposed a water heater in which hot water is supplied to a bathtub from a hot water supply pipe via the hot water supply relay pipe and the additional heating pipe.

【0005】このように追焚き管路を利用して湯張りを
行う場合、追焚き管路の追焚き熱交換器により加熱され
る側を経由して浴槽に至る第1湯張り経路と、追焚き管
路の追焚き熱交換器により加熱されない側を経由して浴
槽に至る第2湯張り経路という2つの経路を介して、い
わゆる両搬送により給湯管路から浴槽に湯を供給するの
が一般的である。
[0005] In the case where the filling is performed using the supplementary heating pipe as described above, the first filling path to the bathtub via the side of the supplementary heating pipe that is heated by the supplementary heating heat exchanger, and the supplementary heating. In general, hot water is supplied from a hot water supply pipe to a bath tub by so-called both conveyances through two paths, that is, a second filling path to a bath tub via a side not heated by the additional heating heat exchanger of the heating pipe. It is a target.

【0006】しかし、両搬送によって湯張りを行うと、
第2湯張り経路側では、給湯管路から供給される目標温
度の湯がそのまま浴槽に供給されるが、第1湯張り経路
側では、給湯管路から供給された目標温度の湯が追焚き
熱交換器でさらに昇温されて浴槽に供給される。
However, when filling is performed by both transports,
On the side of the second hot water supply path, hot water of the target temperature supplied from the hot water supply pipe is directly supplied to the bathtub, but on the first hot water supply path side, the hot water of the target temperature supplied from the hot water supply pipe is additionally heated. The temperature is further increased by the heat exchanger and supplied to the bathtub.

【0007】そのため、通常の(湯張り以外の)給湯を
行う場合のように、給湯管路から供給される湯の温度が
目標温度となるようにフィードバック制御を行うと、浴
槽に貯められる湯の温度が目標温度よりも高くなってし
まうという不都合がある。そこで、従来は、湯張りを行
うときにはフィードバック制御を禁止してフィードフォ
ワード制御のみで給湯温度を制御し、さらに追焚き熱交
換器での加熱分を見込んで給湯熱交換器による加熱量を
減少させるようにしていた。
Therefore, when feedback control is performed so that the temperature of the hot water supplied from the hot water supply pipe reaches the target temperature as in the case of performing normal (other than hot water) hot water supply, the hot water stored in the bathtub is not controlled. There is a disadvantage that the temperature becomes higher than the target temperature. Therefore, conventionally, when performing hot water filling, the feedback control is prohibited, the hot water supply temperature is controlled only by the feed forward control, and the amount of heating by the hot water supply heat exchanger is reduced in consideration of the amount of heating in the additional heating heat exchanger. Was like that.

【0008】しかし、この場合には、加熱量をどの程度
減少させるかを決定することが難しく、浴槽の湯張り温
度を精度良く制御することが難しいという不都合があっ
た。
However, in this case, it is difficult to determine how much the amount of heating is to be reduced, and it is difficult to control the filling temperature of the bath with high accuracy.

【0009】[0009]

【発明が解決しようとする課題】本発明は、上記背景を
鑑みてなされたものであり、一缶二水路式の追焚き付き
給湯器において、簡易な処理により浴槽への湯張り温度
を精度良く制御することができる給湯器を提供すること
を目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned background, and has been made in consideration of the above background. It is an object to provide a water heater that can be controlled.

【0010】[0010]

【課題を解決するための手段】本発明は上記目的を達成
するためになされたものであり、両端が浴槽と接続され
て浴槽に滞留した湯水を循環させて追焚きするための追
焚き管路と、一端が水道と接続されて水道から供給され
る水を加熱して他端から給湯するための給湯管路と、該
追焚き管路を流れる湯水を加熱する追焚き熱交換器と、
その一部が該追焚き熱交換器と重複して該給湯管路を流
れる水を加熱する給湯熱交換器と、該追焚き熱交換器と
該給湯熱交換器とを加熱する加熱手段と、該加熱手段の
加熱量を調節する加熱量調節手段とを備えた給湯器に関
する。
DISCLOSURE OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and a refire line for circulating hot and cold water retained in the bathtub at both ends to reheat the pipes. And a hot water supply pipe for heating water supplied from the water supply at one end and supplying hot water from the other end, and a reheating heat exchanger for heating hot water flowing through the reheating pipe,
A hot water supply heat exchanger that partially heats the water flowing through the hot water supply line overlapping with the additional heating heat exchanger, a heating unit that heats the additional heating heat exchanger and the hot water supply heat exchanger, The present invention relates to a water heater provided with a heating amount adjusting means for adjusting a heating amount of the heating means.

【0011】先ず、本発明の第1の態様は、給湯と追焚
きとを同時に実行するときに前記加熱手段が発生する熱
量のうち前記給湯熱交換器による水の加熱と前記追焚き
熱交換器による湯水の加熱とに実際に使用される熱量の
割合である第1熱効率のデータと、給湯のみを単独で実
行するときに前記加熱手段が発生する熱量のうち前記給
湯熱交換器による水の加熱に実際に使用される熱量の割
合である第2熱効率のデータとを記憶した熱効率データ
記憶手段と、前記給湯管路から所定温度の湯が供給され
るように前記加熱量調節手段により前記加熱手段の加熱
量を制御し、追焚きと給湯とを同時に実行するときは前
記第1熱効率のデータに基づいて前記加熱手段の加熱量
を決定し、給湯のみを単独で実行するときには前記第2
熱効率のデータに基づいて前記加熱手段の加熱量を決定
する給湯制御手段とを備えた追焚き付き給湯器の改良に
関する。
First, according to a first aspect of the present invention, of the heat generated by the heating means when the hot water supply and the additional heating are simultaneously performed, the heating of the water by the hot water supply heat exchanger and the additional heating The first thermal efficiency data, which is the ratio of the amount of heat actually used for the hot water supply, and the heating of the water by the hot water supply heat exchanger out of the heat generated by the heating means when only the hot water supply is performed alone A heat efficiency data storage means for storing data of a second heat efficiency which is a ratio of a heat amount actually used, and the heating means by the heating amount adjusting means so that hot water of a predetermined temperature is supplied from the hot water supply pipe. When the additional heating and the hot water supply are simultaneously performed, the heating amount of the heating means is determined based on the data of the first thermal efficiency.
The present invention relates to an improvement of a hot water supply unit with additional heating provided with hot water supply control means for determining a heating amount of the heating means based on data on thermal efficiency.

【0012】そして、前記給湯管の前記給湯熱交換器に
より水が加熱される箇所の下流側と前記追焚き管路とを
連通して、前記給湯熱交換器により加熱生成された湯
を、前記給湯管路から前記追焚き熱交換器により加熱さ
れる側の前記追焚き管路を経由して前記浴槽に供給する
第1湯張り経路と、前記給湯管路から前記追焚き熱交換
器により加熱されない側の前記追焚き管路を経由して前
記浴槽に供給する第2湯張り経路とを形成する湯張り連
通管を備え、前記給湯制御手段は、前記第1湯張り経路
と前記第2湯張り経路とを介して前記給湯管路から前記
浴槽に湯を供給するときには、前記第1熱効率に基づい
て前記加熱手段の加熱量を決定することを特徴とする。
[0012] Then, the downstream side of the portion of the hot water supply pipe where water is heated by the hot water supply heat exchanger communicates with the additional heating pipe line, and the hot water heated and generated by the hot water supply heat exchanger is converted into the hot water. A first hot water supply path to be supplied from the hot water supply pipe to the bathtub through the additional heat pipe on a side heated by the additional heat exchanger, and heating from the hot water supply pipe by the additional heat exchanger; A hot water supply pipe for forming a second hot water supply path to be supplied to the bathtub via the additional heating pipe line on the side not to be heated, wherein the hot water supply control means includes the first hot water supply path and the second hot water supply pipe; When hot water is supplied from the hot water supply pipe line to the bathtub via a tension path, a heating amount of the heating means is determined based on the first thermal efficiency.

【0013】かかる本発明において、前記熱効率記憶手
段には、給湯と追焚きとを同時に実行する場合に応じた
前記第1熱効率のデータと、給湯のみを単独で実行する
場合に応じた前記第2熱効率のデータとが記憶されてい
る。そして、前記給湯管路から前記第1湯張り経路と前
記第2湯張り経路とを介して浴槽に湯を供給するという
状況は、前記給湯熱交換器により前記給湯管路内を流れ
る水が加熱されると共に、前記追焚き熱交換器により前
記追焚き管路内を流れる湯水が加熱されるという点で、
給湯と追焚きとを同時に実行する状況と共通する。
In the present invention, the thermal efficiency storage means stores the first thermal efficiency data according to the case where the hot water supply and the additional heating are simultaneously performed, and the second thermal efficiency data according to the case where only the hot water supply is performed alone. Thermal efficiency data is stored. The situation in which hot water is supplied from the hot water supply pipe to the bathtub via the first hot water supply path and the second hot water supply path is that water flowing in the hot water supply pipe is heated by the hot water supply heat exchanger. In addition, in that the hot water flowing through the additional heating pipeline is heated by the additional heating heat exchanger,
This is common to the situation where hot water supply and reheating are performed simultaneously.

【0014】そのため、前記給湯管路から前記第1湯張
り経路と前記第2湯張り経路とを介して前記浴槽に湯を
供給する場合に、前記第1熱効率データに基づいて前記
加熱手段の加熱量を決定することにより、前記給湯制御
手段は前記浴槽に供給される湯の温度を精度良く制御す
ることができる。また、この場合には、前記加熱手段の
加熱量を補正するための複雑な処理を行う必要がない。
Therefore, when hot water is supplied from the hot water supply pipe line to the bathtub through the first and second filling paths, the heating means is heated based on the first thermal efficiency data. By determining the amount, the hot water supply control means can accurately control the temperature of the hot water supplied to the bathtub. In this case, there is no need to perform a complicated process for correcting the heating amount of the heating unit.

【0015】次に、本発明の第2の態様は、給湯と追焚
きとを同時に実行するときに前記加熱手段により与えら
れて前記給湯熱交換器による水の加熱と前記追焚き熱交
換器による湯水の加熱とに使用される第1熱量のデータ
と、給湯のみを単独で実行するときに前記加熱手段によ
り与えられて前記給湯熱交換器による水の加熱に使用さ
れる第2熱量のデータとを記憶した熱量データ記憶手段
と、前記給湯管路から所定温度の湯が供給されるように
前記加熱量調節手段により前記加熱手段の加熱量を制御
し、追焚きと給湯とを同時に実行するときは前記第1熱
量に基づいて前記加熱手段の加熱量を決定し、給湯のみ
を単独で実行するときには前記第2熱量に基づいて前記
加熱手段の加熱量を決定する給湯制御手段とを備えた追
焚き付き給湯器の改良に関する。
Next, according to a second aspect of the present invention, when the hot water supply and the additional heating are simultaneously performed, the water supplied by the heating means and heated by the hot water supply heat exchanger and the additional heating by the additional heat exchanger are provided. Data of the first heat quantity used for heating the hot water and data of the second heat quantity given by the heating means and used for heating the water by the hot water supply heat exchanger when only the hot water supply is performed alone. When the heating amount of the heating unit is controlled by the heating amount adjusting unit so that hot water of a predetermined temperature is supplied from the hot water supply line, and the additional heating and the hot water supply are simultaneously performed. Determines a heating amount of the heating unit based on the first heat amount, and determines a heating amount of the heating unit based on the second heating amount when only hot water supply is performed alone. Of water heater with fire About the good.

【0016】そして、前記給湯管の前記給湯熱交換器に
より水が加熱される箇所の下流側と前記追焚き管路とを
連通して、前記給湯熱交換器により加熱生成された湯
を、前記給湯管路から前記追焚き熱交換器により加熱さ
れる側の前記追焚き管路を経由して前記浴槽に供給する
第1湯張り経路と、前記給湯管路から前記追焚き熱交換
器により加熱されない側の前記追焚き管路を経由して前
記浴槽に供給する第2湯張り経路とを形成し、前記給湯
制御手段は、前記第1湯張り経路と前記第2湯張り経路
とを介して前記給湯管路から前記浴槽に湯を供給すると
きには、前記第1熱量のデータに基づいて前記加熱手段
の加熱量を決定することを特徴とする。
[0016] Then, the downstream side of the portion of the hot water supply pipe where water is heated by the hot water supply heat exchanger communicates with the additional heating pipe line, and the hot water heated and generated by the hot water supply heat exchanger is converted into the hot water. A first hot water supply path to be supplied from the hot water supply pipe to the bathtub through the additional heat pipe on a side heated by the additional heat exchanger, and heating from the hot water supply pipe by the additional heat exchanger; Forming a second filling path to be supplied to the bathtub through the additional heating pipe on the side not to be heated, wherein the hot water supply control means is provided via the first filling path and the second filling path; When hot water is supplied from the hot water supply pipe to the bathtub, a heating amount of the heating means is determined based on the data of the first heat amount.

【0017】かかる本発明において、前記加熱量データ
記憶手段には、給湯と追焚きとを同時に実行する場合に
応じた前記第1熱量のデータと、給湯のみを単独で実行
する場合に応じた前記第2熱量のデータとが記憶されて
いる。そして、上述したように、前記給湯管路から前記
第1湯張り経路と前記第2湯張り経路とを介して浴槽に
湯を供給するという状況は、前記給湯熱交換器により前
記給湯管路内を流れる水が加熱されると共に、前記追焚
き熱交換器により前記追焚き管路内を流れる湯水が加熱
されるという点で、給湯と追焚きとを同時に実行する状
況と共通する。
In the present invention, the heating amount data storage means stores the first heat amount data corresponding to the case where the hot water supply and the additional heating are simultaneously performed, and the heat amount data corresponding to the case where the hot water supply alone is performed alone. The data of the second heat quantity is stored. As described above, the situation in which hot water is supplied from the hot water supply pipe to the bath tub via the first hot water supply path and the second hot water supply path is caused by the hot water supply heat exchanger. This is common to the situation in which hot water supply and reheating are performed simultaneously, in that the water flowing through the reheating tank is heated and the hot water flowing in the reheating pipe is heated by the reheating heat exchanger.

【0018】そのため、前記給湯管路から前記第1湯張
り経路と前記第2湯張り経路とを介して前記浴槽に湯を
供給する場合に、前記第1熱量のデータに基づいて前記
加熱手段の加熱量を決定することにより、前記給湯制御
手段は、前記浴槽に供給される湯の温度を精度良く制御
することができる。
[0018] Therefore, when hot water is supplied from the hot water supply pipe to the bathtub via the first and second filling paths, the heating means is controlled based on the first calorie data. By determining the heating amount, the hot water supply control means can accurately control the temperature of the hot water supplied to the bathtub.

【0019】[0019]

【発明の実施の形態】本発明の実施の形態の一例につい
て、図1〜図2を参照して説明する。図1は本発明の追
焚き付き給湯器の全体構成図、図2は図1に示した追焚
き付き給湯器の制御ブロック図である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall configuration diagram of a water heater with additional heating of the present invention, and FIG. 2 is a control block diagram of the water heater with additional heating shown in FIG.

【0020】図1を参照して、給湯器1は、給湯管路2
により水道管(図示しない)と接続され、追焚き管路3
により浴槽4と接続されている。そして、給湯器1は、
水道管から給湯管路2により供給される水を所定温度に
加熱して給湯する機能と、浴槽4に貯められた湯水を加
熱して追焚きする機能と、浴槽4に所定温度の湯を所定
量貯める湯張り機能とを有する。
Referring to FIG. 1, water heater 1 includes hot water supply line 2
Is connected to a water pipe (not shown) by
Is connected to the bathtub 4. And the water heater 1
A function of heating water supplied from the water pipe through the hot water supply pipe line 2 to a predetermined temperature to supply hot water, a function of heating hot water stored in the bathtub 4 to reheat the water, and a function of supplying hot water of a predetermined temperature to the bathtub 4. It has a hot water filling function to store a fixed amount.

【0021】給湯器1はコントローラ4により全体の作
動が制御され、コントローラ4からの制御信号に応じて
作動する第1バーナ5(本発明の加熱手段に相当する)
及び該第1バーナよりも加熱能力が低い第2バーナ6
(本発明の加熱手段に相当する)、第1バーナ5と第2
バーナ6とにより加熱される追焚き熱交換器7と給湯熱
交換器8、水道管から給湯管路2に供給された水の一部
を給湯熱交換器8をバイパスさせて給湯熱交換器8から
出湯される湯に混入させるバイパス管9、コントローラ
4からの制御信号によりバイパス管9の開度を調節する
バイパスサーボ10、給湯管路2とバイパス管9との合
流箇所Xの下流側の湯の温度を検出して検出信号をコン
トローラ4に出力する給湯サーミスタ11、給湯熱交換
器8の出口付近の湯の温度を検出して検出信号をコント
ローラ4に出力する熱交サーミスタ12、水道から給湯
管路2に供給される水の流量を検出して検出信号をコン
トローラ4に出力する給水流量センサ13、及び給湯管
路2から供給される湯の流量を調節する湯量サーボ14
を備える。
The overall operation of the water heater 1 is controlled by a controller 4 and a first burner 5 (corresponding to a heating means of the present invention) which operates according to a control signal from the controller 4.
And a second burner 6 having a lower heating capacity than the first burner.
(Corresponding to the heating means of the present invention), the first burner 5 and the second burner
The reheated heat exchanger 7 and the hot water supply heat exchanger 8 heated by the burner 6, and a part of the water supplied from the water pipe to the hot water supply pipe line 2 are bypassed by the hot water supply heat exchanger 8 and the hot water supply heat exchanger 8 is provided. Pipe 9 mixed with the hot water discharged from the hot water, a bypass servo 10 for adjusting the degree of opening of the bypass pipe 9 by a control signal from the controller 4, hot water downstream of the junction X between the hot water supply line 2 and the bypass pipe 9. Hot water thermistor 11 that detects the temperature of the hot water and outputs a detection signal to the controller 4; a heat exchange thermistor 12 that detects the temperature of hot water near the outlet of the hot water supply heat exchanger 8 and outputs the detection signal to the controller 4; A water supply flow rate sensor 13 that detects a flow rate of water supplied to the pipe 2 and outputs a detection signal to the controller 4, and a water quantity servo 14 that adjusts a flow rate of hot water supplied from the hot water supply pipe 2.
Is provided.

【0022】さらに、給湯器1は、給湯管路2と追焚き
管路3とを接続する湯張り中継管30、コントローラ4
からの制御信号により作動して湯張り中継管30を開閉
する注湯電磁弁15、追焚き管路3から湯張り中継管3
0への方向の湯の通過を不能とし湯張り中継管30から
追焚き管路3への方向の湯の通過を可能とする逆止弁1
6、コントローラ4からの制御信号により作動して浴槽
4に貯められた湯水を追焚き管路3内に循環させるポン
プ17、浴槽4から追焚き管路3に供給される湯水の温
度(=浴槽に貯められた湯水の温度)を検出して検出信
号をコントローラ4に出力する風呂サーミスタ18、追
焚き管路3内を流れる湯水の有無を検出して検出信号を
コントローラ4に出力する風呂水流スイッチ19、給湯
管路2から湯張り中継管30と追焚き管路3とを経由し
て浴槽4に供給される湯の流量を検出して検出信号をコ
ントローラ4に出力する湯量センサ20を備える。
Further, the hot water supply device 1 comprises a hot water supply relay pipe 30 for connecting the hot water supply pipe line 2 and the additional heating pipe line 3, and a controller 4.
Pouring solenoid valve 15 which operates in response to a control signal from and opens and closes filling pipe 30,
Check valve 1 that disables the passage of hot water in the direction to 0 and enables the passage of hot water in the direction from the filling line 30 to the reheating line 3.
6. A pump 17 which operates in response to a control signal from the controller 4 to circulate the hot water stored in the bathtub 4 into the additional heating pipe 3, the temperature of the hot water supplied from the bathtub 4 to the additional heating pipe 3 (= bathtub) A bath thermistor 18 for detecting the temperature of the hot water stored in the tank and outputting a detection signal to the controller 4, and a bath water flow switch for detecting the presence or absence of hot water flowing in the additional heating pipe 3 and outputting the detection signal to the controller 4. 19. A hot water quantity sensor 20 for detecting a flow rate of hot water supplied from the hot water supply pipe 2 to the bathtub 4 via the hot water relay pipe 30 and the additional heating pipe 3 and outputting a detection signal to the controller 4.

【0023】また、給湯器1は、第1バーナ5と第2バ
ーナ6の作動を制御するため、コントローラ4からの制
御信号に応じて第1バーナ5と第2バーナ6への燃料ガ
スの供給と遮断とを切替える元ガス電磁弁21、コント
ローラ4からの制御信号に応じて燃料ガスの供給流量を
調節するガス比例弁22、コントローラ4からの制御信
号に応じて第1バーナ5への燃料ガスの供給と遮断とを
切替える第1ガス電磁弁23、コントローラ4からの制
御信号に応じて第2バーナ6への燃料ガスの供給と遮断
とを切替える第2ガス電磁弁24、コントローラ4から
の制御信号に応じて第1バーナ5と第2バーナ6に燃焼
用空気を供給する燃焼ファン25、コントローラ4から
の制御信号に応じてイグナイタ26から印加される高電
圧により火花放電を生じる点火プラグ27、第2バーナ
6の燃焼炎の有無を検出して検出信号をコントローラ4
に出力するフレームロッド28、及び給湯熱交換器8内
で最も給湯管路2内の温度が高くなる箇所の水の温度を
検出して検出信号をコントローラ4に出力する水管サー
ミスタ29を備える。
The water heater 1 supplies fuel gas to the first burner 5 and the second burner 6 in response to a control signal from the controller 4 in order to control the operation of the first burner 5 and the second burner 6. Original gas solenoid valve 21 for switching between the cutoff and the shutoff, a gas proportional valve 22 for adjusting the supply flow rate of the fuel gas according to a control signal from the controller 4, and a fuel gas to the first burner 5 according to a control signal from the controller 4. A first gas solenoid valve 23 for switching between supply and cutoff of fuel, a second gas solenoid valve 24 for switching between supply and cutoff of fuel gas to the second burner 6 in response to a control signal from the controller 4, and control from the controller 4. A combustion fan 25 for supplying combustion air to the first burner 5 and the second burner 6 in response to a signal, and a spark discharge by a high voltage applied from an igniter 26 in response to a control signal from the controller 4. Spark plug 27 occurs, a detection signal by detecting the presence or absence of combustion flame in the second burner 6 controller 4
And a water pipe thermistor 29 that detects the temperature of water in the hot water supply pipe 2 where the temperature is the highest in the hot water supply heat exchanger 8 and outputs a detection signal to the controller 4.

【0024】なお、第1ガス電磁弁23と、第2ガス電
磁弁24と、ガス比例弁22とにより、本発明の加熱量
調節手段が構成される。また、水管サーミスタ29は、
追焚きのみを単独で実行したときに、給湯熱交換器8内
に滞留した水が加熱されて異常に昇温されることを防止
するために設けられ、水管サーミスタ27の検出温度が
所定の上限温度を超えたときに、コントローラ4は、第
1バーナ5と第2バーナ6の燃焼を停止する。
The first gas solenoid valve 23, the second gas solenoid valve 24, and the gas proportional valve 22 constitute the heating amount adjusting means of the present invention. In addition, the water tube thermistor 29
It is provided to prevent the water staying in the hot water supply heat exchanger 8 from being heated and abnormally heated when only the additional heating is performed, and the temperature detected by the water pipe thermistor 27 is set to a predetermined upper limit. When the temperature is exceeded, the controller 4 stops the combustion of the first burner 5 and the second burner 6.

【0025】また、コントローラ4は、浴室等に設置さ
れたリモコン40との間で各種信号の送受信を行う。リ
モコン40には、給湯温度、湯張り温度、追焚き時間等
を設定するスイッチ類(図示しない)と、給湯温度、湯
張り温度等を表示するディスプレイ部(図示しない)と
が備えられている。
The controller 4 transmits and receives various signals to and from a remote controller 40 installed in a bathroom or the like. The remote controller 40 is provided with switches (not shown) for setting hot water supply temperature, hot water temperature, additional heating time, and the like, and a display unit (not shown) for displaying hot water supply temperature, hot water temperature, and the like.

【0026】次に、図2を参照して、コントローラ4
は、給湯管路2から目標給湯温度の湯を供給する給湯運
転を実行する給湯制御手段50、浴槽4に貯められた湯
を目標追焚き温度まで昇温させる追焚き運転を実行する
追焚き制御手段51、浴槽に目標湯張り温度の湯を目標
湯張り量だけ供給する湯張り運転を実行する湯張り制御
手段52、第1バーナ5と第2バーナ6とによる総燃焼
量(本発明の加熱手段が発生する熱量に相当する。以
下、総バーナ燃焼量という)のうち、給湯熱交換器8側
の加熱に使用される熱量の割合を算出する給湯熱量分配
比把握手段53、及び上記給湯運転と湯張り運転を行う
ために必要なデータが記憶されたデータメモリ54(本
発明の熱効率データ記憶手段の機能を含む)を備える。
Next, referring to FIG.
Are hot water supply control means 50 for executing hot water supply operation for supplying hot water at a target hot water supply temperature from hot water supply pipe line 2, and additional heating control for performing additional heating operation for increasing the temperature of hot water stored in bathtub 4 to a target additional heating temperature. Means 51, a filling control means 52 for executing filling operation for supplying hot water of a target filling temperature to a bathtub by a target filling amount, and a total combustion amount by the first burner 5 and the second burner 6 (heating of the present invention). (Hereinafter, referred to as total burner combustion amount), the hot water supply heat distribution ratio grasping means 53 for calculating the ratio of the heat amount used for heating the hot water supply heat exchanger 8 side, and the above hot water supply operation And a data memory 54 (including the function of the thermal efficiency data storage means of the present invention) in which data necessary for performing the filling operation is stored.

【0027】給湯制御手段50は、リモコン40により
設定された目標給湯温度の湯が給湯管路2から供給され
るように、第1バーナ5と第2バーナ6の燃焼量を制御
する。給湯制御手段50は、給湯管路2の下流側に接続
されたカラン(図示しない)が開けられて、水道管から
の給水が開始されたことを水量センサ13の検出信号か
ら検知すると、燃焼ファン25を作動させて燃焼用空気
の供給を開始し、イグナイタ26から点火プラグ27に
高電圧を印加して火花放電を生じさせた状態で、元ガス
電磁弁21と第2ガス電磁弁23とを開弁して第2バー
ナ6に点火する。
Hot water supply control means 50 controls the amount of combustion of first burner 5 and second burner 6 so that hot water at the target hot water temperature set by remote controller 40 is supplied from hot water supply line 2. The hot water supply control means 50 detects the start of the water supply from the water pipe from the detection signal of the water flow sensor 13 when the callan (not shown) connected to the downstream side of the hot water supply pipe line 2 is opened, and the combustion fan 25, the supply of combustion air is started, and a high voltage is applied from the igniter 26 to the ignition plug 27 to generate spark discharge, and the original gas solenoid valve 21 and the second gas solenoid valve 23 are connected. The valve is opened and the second burner 6 is ignited.

【0028】そして、給湯制御手段50は、第1ガス電
磁弁23と第2ガス電磁弁24の双方を開弁して第1バ
ーナ5と第2バーナ6とを燃焼させる「大燃焼」、第1
ガス電磁弁23を開弁して第2ガス電磁弁24を閉弁
し、第1バーナ5のみを燃焼させる「中燃焼」、第1電
磁弁23を閉弁して第2電磁弁24を開弁し、第2バー
ナ6のみを燃焼させる「小燃焼」という3段階で、第1
バーナ5と第2バーナ6とによる総バーナ燃焼量を調節
する。また、給湯制御手段50は、ガス比例弁22の開
度を変更することにより、「大燃焼」、「中燃焼」、
「小燃焼」における燃焼量をさらに細かく制御する。
Then, the hot water supply control means 50 opens both the first gas solenoid valve 23 and the second gas solenoid valve 24 to burn the first burner 5 and the second burner 6 "large combustion". 1
The gas solenoid valve 23 is opened, the second gas solenoid valve 24 is closed, and only the first burner 5 is burned. "Medium combustion", the first solenoid valve 23 is closed and the second solenoid valve 24 is opened. In three stages of “small combustion” in which only the second burner 6 is burned,
The total burner combustion amount by the burner 5 and the second burner 6 is adjusted. Further, the hot water supply control means 50 changes the opening degree of the gas proportional valve 22 so that “large combustion”, “medium combustion”,
The amount of combustion in "small combustion" is more finely controlled.

【0029】ここで、データメモリ54には、以下の表
1に示したように、「大燃焼」における最大燃焼量(Q
max)と最小燃焼量(Q大min)、「中燃焼」における
最大燃焼量(Q中max)と最小燃焼量(Q中min)、及び
「小燃焼」における最大燃焼量(Q小max)と最小燃焼
量(Q小min)のデータ(実験や計算により求められ
る)が記憶されている。
Here, as shown in Table 1 below, the data memory 54 stores the maximum combustion amount (Q
Large max) and the minimum combustion rate (Q large min), the maximum combustion amount in the "medium burning" (Q in max) and the minimum combustion rate (Q in min), and the maximum combustion amount in the "small combustion" (Q small max) And the data of the minimum combustion amount (Q small min ) (determined by experiments and calculations).

【0030】[0030]

【表1】 [Table 1]

【0031】しかし、総バーナ燃焼量(QALL)の全て
が、給湯熱交換器8内を流れる水や、追焚き熱交換器7
内を流れる湯水の加熱に使用されるわけではなく、無駄
に消費される燃焼量もある。そこで、データメモリ54
には、以下の表2に示したように、「大燃焼(Q大ma
x,Q大min)」、「中燃焼(Q中max,Q中min)」、
「小燃焼(Q小max,Q小min)」における熱効率(η)
のデータが記憶されている。
However, all of the total burner combustion amount (Q ALL ) depends on the water flowing in the hot water supply heat exchanger 8 and the reheating heat exchanger 7.
It is not used for heating the hot and cold water flowing inside, and there is also a waste amount of combustion. Therefore, the data memory 54
As shown in Table 2 below, “Large combustion (Q large
x, Q large min) "," Medium combustion (maximum in Q, min in Q) ",
Thermal efficiency (η) in “small combustion (Q small max, Q small min)”
Is stored.

【0032】[0032]

【表2】 [Table 2]

【0033】ここで、熱効率(η)は以下の式(1)に
より定義される。また、給湯単独運転に対応した熱効率
(η単大max〜η単小min)が本発明の第2熱効率のデー
タに相当し、給湯・追焚き同時運転に対応した熱効率
(η同大max〜η同小min)が本発明の第1熱効率のデー
タに相当する。
Here, the thermal efficiency (η) is defined by the following equation (1). In addition, the thermal efficiency (η single max. To η single min) corresponding to the hot water single operation corresponds to the second thermal efficiency data of the present invention, and the thermal efficiency (η same max to η) corresponding to the simultaneous hot water supply and additional heating operation. (Small min) corresponds to the first thermal efficiency data of the present invention.

【0034】[0034]

【数1】 (Equation 1)

【0035】式(1)において、Tin1は水道管から給
湯熱交換器8に供給される水の温度、Tout2は給湯熱交
換器8から出湯される湯の温度、W2は給湯熱交換器8
内を通過する水の流量である。一方、Tin2は浴槽4内
に貯められた湯水の温度、To ut2は追焚き熱交換器から
出湯される湯水の温度、W2は追焚き管路3内を通過す
る湯水の流量である。
In the equation (1), T in 1 is the temperature of the water supplied from the water pipe to the hot water supply heat exchanger 8, T out 2 is the temperature of the hot water discharged from the hot water supply heat exchanger 8, and W 2 is the hot water supply heat Exchanger 8
It is the flow rate of water passing through the inside. On the other hand, T in 2 the hot water temperature which is accumulated in the bathtub 4, T o ut 2 is the temperature of hot water to be tapped from the reheating heat exchanger, W2 in the hot water flow through the reheating pipe line 3 is there.

【0036】熱効率(η)は、給湯運転のみを単独で実
行するとき(以下、給湯単独運転という)よりも、給湯
運転と追焚き運転を同時に実行するとき(以下、給湯・
追焚き同時運転という)の方が若干高くなる。これは、
給湯熱交換器8と追焚き熱交換器7における有効な総伝
熱面積が、給湯・追焚き同時運転時の方が広くなるから
である。
The thermal efficiency (η) is higher when the hot water supply operation and the additional heating operation are performed at the same time (hereinafter referred to as hot water supply / heating operation) than when only the hot water supply operation is performed alone (hereinafter, referred to as hot water supply alone operation).
Reheating operation) is slightly higher. this is,
This is because the effective total heat transfer area of the hot water supply heat exchanger 8 and the additional heating heat exchanger 7 becomes wider when the hot water supply and additional heating are simultaneously operated.

【0037】そのため、本実施の形態においては、上記
表2に示したように給湯・追焚き同時運転に応じた熱効
率(η同大max〜η同小min、本発明の第1熱効率に相当
する)のデータと、給湯単独運転に応じた熱効率(η単
大max〜η単小min、本発明の第2熱効率に相当する)の
データとが予めデータメモリ54に記憶されている。そ
して、給湯制御手段50は、運転状況(給湯単独運転又
は給湯・追焚き同時運転)に応じた熱効率(η)を使用
して、総バーナ燃焼量(QALL)を決定する。
Therefore, in the present embodiment, as shown in Table 2 above, the thermal efficiency (η equal large max to η same small min, corresponding to the first thermal efficiency of the present invention) according to the simultaneous operation of hot water supply and additional heating. ) And the data of the thermal efficiency (η single max. To η single min, corresponding to the second thermal efficiency of the present invention) corresponding to the hot water supply alone operation are stored in the data memory 54 in advance. Then, hot water supply control means 50 determines the total burner combustion amount (Q ALL ) using the thermal efficiency (η) according to the operation condition (hot water supply alone operation or hot water supply and additional heating simultaneous operation).

【0038】給湯単独運転時には、総バーナ燃焼量(Q
ALL)は給湯熱交換器8内を通過する水を加熱するため
にのみ消費される。そして、給湯制御手段50は、給湯
サーミスタ11の検出温度(TH)と、水量センサ13
の検出流量(FW)と、給湯熱交換器8において水の加
熱に使用される熱量(QR)とから、以下の式(2)に
より、水道管からの給水温度(TW)を把握する。な
お、熱量(QR)は、総バーナ燃焼量(QALL)に熱効率
(η)を掛けて算出される。
During hot water supply alone operation, the total burner combustion amount (Q
ALL ) is consumed only for heating the water passing through the hot water supply heat exchanger 8. Then, the hot water supply control means 50 determines whether the detected temperature (T H ) of the hot water supply
From the detected flow rate (F W ) and the amount of heat (Q R ) used to heat the water in the hot water supply heat exchanger 8, the temperature (T W ) of the water supply from the water pipe is obtained by the following equation (2). I do. The amount of heat (Q R ) is calculated by multiplying the total burner combustion amount (Q ALL ) by the thermal efficiency (η).

【0039】[0039]

【数2】 (Equation 2)

【0040】そして、給湯制御手段50は、給湯管路2
から目標給湯温度(TA)の湯を供給するために給湯熱
交換器8に与える必要がある熱量(以下、必要給湯熱量
(Q nh)という)を以下の式(3)により決定する。
Then, the hot water supply control means 50 controls the hot water supply pipe 2
From the target hot water supply temperature (TAHot water supply to supply hot water)
The amount of heat that needs to be given to the exchanger 8 (hereinafter, the required amount of hot water
(Q nh) Is determined by the following equation (3).

【0041】[0041]

【数3】 (Equation 3)

【0042】給湯単独運転時には、追焚き熱交換器7側
では加熱を要しないため、給湯熱交換器8と追焚き熱交
換器7とに与える必要がある総熱量(以下、総必要熱量
(Q n)という)は、以下の式(4)に示すように必要
給湯熱量(Qnh)と一致する。
During the hot water supply alone operation, the additional heat exchanger 7 side
Does not require heating, so the hot water supply heat exchanger 8 and additional heating heat exchange
Total heat required to be provided to the heat exchanger 7 (hereinafter referred to as the total required heat
(Q n)) Is necessary as shown in the following equation (4).
Hot water supply (Qnh).

【0043】[0043]

【数4】 (Equation 4)

【0044】一方、給湯・追焚き同時運転時には、総バ
ーナ燃焼量(QALL)の一部が、追焚き管路3内を循環
する湯水を加熱するためにも消費される。そのため、給
湯・追焚き同時運転時には、上記式(3)により算出さ
れる給湯必要熱量(Qnh)に、追焚き熱交換器7で消費
される熱量(以下、追焚き消費熱量(Qc)という)を
加えた熱量を給湯熱交換器8と追焚き熱交換器9に与え
る必要がある。
On the other hand, during the simultaneous operation of hot water supply and reheating, a part of the total burner combustion amount (Q ALL ) is also consumed for heating the hot and cold water circulating in the reheating line 3. Therefore, during simultaneous operation of hot water supply and additional heating, the required amount of hot water supply (Q nh ) calculated by the above equation (3) is added to the amount of heat consumed by the additional heating heat exchanger 7 (hereinafter, additional heat consumption (Q c )). ) Needs to be supplied to the hot water supply heat exchanger 8 and the additional heat exchanger 9.

【0045】そこで、給湯制御手段50は、給湯・追焚
き同時運転時における総必要熱量(Qn)を、以下の式
(5)により決定する。
Therefore, the hot water supply control means 50 determines the total required heat quantity (Q n ) during the simultaneous operation of hot water supply and additional heating by the following equation (5).

【0046】[0046]

【数5】 (Equation 5)

【0047】なお、追焚き消費熱量(Qc)は、風呂サ
ーミスタ18により検出される浴槽4に貯められた湯の
温度と、ポンプ17の能力により定まる追焚き管路3内
を流れる湯水の流量とにより把握される。
The additional heat consumption (Q c ) is determined by the temperature of the hot water stored in the bathtub 4 detected by the bath thermistor 18 and the flow rate of hot water flowing through the additional heating pipe 3 determined by the capacity of the pump 17. And is grasped by.

【0048】そして、給湯制御手段50は、このように
して式(4)又は式(5)により決定された総必要熱量
(Qn)が得られるように、各運転状態(給湯単独運転
又は給湯・追焚き同時運転)に応じて表2に示した熱効
率(η)のデータを選択して、以下の式(6)により、
総バーナ燃焼量(QALL)を決定する。これにより、給
湯制御手段50は、各運転状態に応じて総バーナ燃焼量
(QALL)を精度良く決定することができる。
Then, the hot water supply control means 50 controls each operation state (hot water supply alone operation or hot water supply operation) so as to obtain the total required heat quantity (Q n ) determined by the equation (4) or the equation (5). -Simultaneous reheating operation), select the data of the thermal efficiency (η) shown in Table 2, and use the following equation (6)
Determine the total burner burn rate (Q ALL ). Thereby, the hot water supply control means 50 can accurately determine the total burner combustion amount (Q ALL ) according to each operation state.

【0049】[0049]

【数6】 (Equation 6)

【0050】そして、このようにして決定したバーナ総
燃焼量(QALL)が発生するように、給湯制御手段50
は、上述した「大燃焼」,「中燃焼」,「小燃焼」のい
ずれかを選択し、また、ガス比例弁22の開度を調節す
ることによって、給湯管路2からの給湯温度が目標給湯
温度に保たれるようにフィードフォワード制御を行う。
Then, the hot water supply control means 50 is controlled so that the burner total combustion amount (Q ALL ) determined in this manner is generated.
Is selected from among the above-mentioned "large combustion", "medium combustion", and "small combustion", and by adjusting the opening of the gas proportional valve 22, the hot water supply temperature from the hot water supply pipe 2 is set to the target. Feed forward control is performed so as to maintain the hot water supply temperature.

【0051】なお、このフィードフォワード制御によ
り、基本的には給湯管路2からの給湯温度を目標給湯温
度と一致させることができるはずであるが、給湯器1の
固体差等を考慮して、最終的には給湯サーミスタ11に
より検出される実際の給湯温度が目標給湯温度と一致す
るように、給湯制御手段50は、フィードバック制御に
より総バーナ燃焼量(QALL)を補正する。
It should be noted that this feedforward control should basically make it possible to match the hot water supply temperature from the hot water supply line 2 with the target hot water supply temperature. Ultimately, hot water supply control means 50 corrects the total burner combustion amount (Q ALL ) by feedback control so that the actual hot water supply temperature detected by hot water supply thermistor 11 matches the target hot water supply temperature.

【0052】また、給湯単独運転時の「大燃焼」(「中
燃焼」,「小燃焼」でも同様)における中間燃焼量Q大
x(Q大min<Q大x<Q大max)に対する熱効率(η)
は、以下の比例計算式(7)によって算出される。な
お、給湯・追焚き同時運転時や湯張り運転時の中間燃焼
量に対する熱効率(η)も、同様の比例計算によって算
出される。
Further, in the case of the "large combustion" (the same applies to the "medium combustion" and the "small combustion") during the hot water supply alone operation, the thermal efficiency (the large Q min x the large Q <the large x <the large Q) for the intermediate combustion amount Q η)
Is calculated by the following proportional expression (7). The thermal efficiency (η) with respect to the intermediate combustion amount during the simultaneous operation of hot water supply and additional heating or hot water filling operation is also calculated by the same proportional calculation.

【0053】[0053]

【数7】 (Equation 7)

【0054】次に、湯張り運転を行う場合、湯張り制御
手段52は、給湯制御手段50に対してリモコン40で
設定された目標湯張り温度で給湯を行うことを指示し
て、注湯電磁弁15を開弁する。
Next, when performing the hot water filling operation, the hot water filling control means 52 instructs the hot water supply control means 50 to carry out hot water supply at the target hot water temperature set by the remote controller 40, and performs the pouring electromagnetic operation. The valve 15 is opened.

【0055】注湯電磁弁15が開弁されると、図1を参
照して、水道から給湯管路2への水の供給が開始され、
給湯熱交換器8で加熱生成された湯が、給湯管路2から
湯張り中継管30を介して追焚き管路3に供給され、追
焚き管路3の追焚き熱交換器7を通過する側の第1湯張
り経路R1と、追焚き管路3の追焚き熱交換器7を通過
しない側の第2湯張り経路R2とを経由して浴槽4に供
給される。
When the pouring solenoid valve 15 is opened, the supply of water from the water supply to the hot water supply line 2 is started with reference to FIG.
Hot water generated by heating in the hot water supply heat exchanger 8 is supplied from the hot water supply pipe 2 to the additional heating pipe 3 through the filling pipe 30 and passes through the additional heating heat exchanger 7 in the additional heating pipe 3. The water is supplied to the bathtub 4 via the first filling path R1 on the side and the second filling path R2 on the side not passing through the supplementary heat exchanger 7 of the supplementary heating pipe 3.

【0056】ここで、給湯サーミスタ11により検出さ
れる給湯管路2からの給湯温度が、目標湯張り温度とな
るように第1バーナ5と第2バーナ6の燃焼量をフィー
ドバック制御すると、第1湯張り経路R1を経由して浴
槽4に供給される湯は追焚き熱交換器7でさらに加熱さ
れるため、浴槽4に貯められる湯の温度が目標湯張り温
度よりも高くなってしまう。
Here, when the combustion amounts of the first burner 5 and the second burner 6 are feedback-controlled so that the hot water supply temperature from the hot water supply pipe 2 detected by the hot water supply thermistor 11 becomes the target hot water temperature, the first The hot water supplied to the bathtub 4 via the hot water path R1 is further heated by the additional heat exchanger 7, so that the temperature of the hot water stored in the bathtub 4 becomes higher than the target hot water temperature.

【0057】そこで、給湯制御手段50は、湯張り運転
時にはフィードバック制御は行わず、フィードフォワー
ド制御のみを行って給湯温度を制御する。そして、給湯
制御手段50は、上記式(6)により総バーナ燃焼量
(QALL)を決定するときに、上記表2に示したよう
に、給湯・追焚き同時運転に対応した熱効率(η同大ma
x〜η同小min)を使用する。
Therefore, the hot water supply control means 50 controls the hot water supply temperature by performing only the feed forward control without performing the feedback control during the hot water filling operation. Then, when determining the total burner combustion amount (Q ALL ) according to the above equation (6), the hot water supply control means 50 determines the thermal efficiency (η equal to η) corresponding to the simultaneous hot water supply and additional heating operation as shown in Table 2 above. Large ma
x ~ η same small min) is used.

【0058】ここで、湯張り運転時には、給湯熱交換器
8により給湯管路2内を流れる水が加熱されると共に、
第2湯張り経路R2においては追焚き熱交換器7により
追焚き管路3内を流れる湯水が加熱されるという状況と
なる。そして、この状況は、給湯・追焚き同時運転時に
おける、給湯熱交換器8により給湯管路2内を流れる水
が加熱されると共に、追焚き熱交換器7によりポンプ1
7で循環される浴槽4に貯まった湯水が加熱される状況
と同様である。
Here, during the hot water filling operation, the water flowing through the hot water supply pipe line 2 is heated by the hot water supply heat exchanger 8, and
In the second hot water filling path R2, the hot water flowing in the additional heating pipe 3 is heated by the additional heating heat exchanger 7. In this situation, the water flowing in the hot water supply line 2 is heated by the hot water supply heat exchanger 8 and the pump 1 is heated by the additional heating heat exchanger 7 during the simultaneous operation of hot water supply and additional heating.
This is similar to the situation where the hot and cold water stored in the bathtub 4 circulated in 7 is heated.

【0059】そのため、湯張り運転時の熱効率(η)
は、給湯・追焚き同時運転時の熱効率(η)と同様にな
ると考えられる。そこで、給湯制御手段50は、給湯・
追焚き同時運転時に応じた熱効率(η)を使用して、湯
張り運転時の第1バーナ5と第2バーナ2の燃焼量を制
御することによって、浴槽4に供給される湯の温度が目
標温度精度となるように精度良く制御することができ
る。
Therefore, the thermal efficiency (η) during the filling operation
Is considered to be the same as the thermal efficiency (η) during the simultaneous operation of hot water supply and reheating. Therefore, the hot water supply control means 50
By controlling the combustion amount of the first burner 5 and the second burner 2 during the hot water filling operation using the thermal efficiency (η) according to the simultaneous reheating operation, the temperature of the hot water supplied to the bathtub 4 is set to the target. The temperature can be controlled with high accuracy.

【0060】なお、本実施の形態では、上述した表1に
示したように、各運転状況に応じた熱効率(η)をデー
タメモリ54に記憶するようにしたが、以下の表3に示
したように、総バーナ燃焼量のうち給湯熱交換器8によ
る水の加熱と追焚き熱交換器7による湯水の加熱とに実
際に使用される熱量のデータをデータメモリ54(この
場合は本発明の熱量データ記憶手段の機能を含む)に記
憶し、該熱量データを使用して、第1バーナ5と第2バ
ーナ6の燃焼量を決定するようにしてもよい。
In the present embodiment, as shown in Table 1 above, the thermal efficiency (η) corresponding to each operating condition is stored in the data memory 54, but is shown in Table 3 below. As described above, of the total burner combustion amount, the data of the heat amount actually used for the heating of the water by the hot water supply heat exchanger 8 and the heating of the hot water by the additional heating heat exchanger 7 is stored in the data memory 54 (in this case, the present invention). (Including the function of the calorific value data storage means), and the calorific value data may be used to determine the combustion amount of the first burner 5 and the second burner 6.

【0061】[0061]

【表3】 [Table 3]

【0062】この場合には、上記式(4)または式
(5)により決定した総必要熱量(Qn)に応じた総バ
ーナ燃焼量(QALL)を表3から求める。例えば、給湯
単独運転時に式(4)により決定された総必要熱量(Q
n)がQ単大minであったときには、対応する総バーナ燃
焼量(QALL)として、Q大minが選択される。なお、給
湯単独運転に対応した熱量(Q単大max〜Q単小min)が
本発明の第1熱量のデータに相当し、給湯・追焚き同時
運転に対応した熱量(Q同大max〜Q小min)が本発明の
第2熱量のデータに相当する。
In this case, the total burner combustion amount (Q ALL ) according to the total required heat amount (Q n ) determined by the above equation (4) or (5) is obtained from Table 3. For example, the total required heat quantity (Q
When n) was Q Tandai min as the corresponding total burner combustion rate (Q ALL), Q large min is selected. In addition, the heat quantity (Q single maximum max to Q single small min) corresponding to the hot water supply alone operation corresponds to the first heat quantity data of the present invention, and the heat quantity (Q same large max to Q (Small min) corresponds to the second calorie data of the present invention.

【0063】また、給湯単独運転時の「大燃焼」(「中
燃焼」,「小燃焼」でも同様)における中間熱量Q単大
x(Q単大min<Q単大x<Q単大max)に対する総バー
ナ燃焼量(QALL)は、以下の比例計算式(8)によっ
て算出される。なお、給湯・追焚き同時運転時や湯張り
運転時の中間熱量に対する総バーナ燃焼量(QALL
も、同様の比例計算によって算出される。
In addition, the intermediate heat quantity Q single x (Q single min <Q single x <Q single max) in "large combustion" (same for "medium combustion" and "small combustion") in hot water supply alone operation the total burner combustion rate for (Q ALL) is calculated by the following proportional equation (8). It should be noted that the total burner combustion amount (Q ALL ) with respect to the intermediate heat amount during the simultaneous operation of hot water supply and reheating, or the hot water filling operation
Is calculated by the same proportional calculation.

【0064】[0064]

【数8】 (Equation 8)

【0065】この場合には、例えば給湯器1の固体ごと
に実際の熱量を測定して熱量データを設定することによ
り、より精度よく湯張り温度を制御することができる。
In this case, for example, by measuring the actual amount of heat for each solid of the water heater 1 and setting the amount of heat, the filling temperature can be controlled more accurately.

【0066】また、本実施の形態では、本発明の加熱手
段としてガスを燃料とするバーナを示したが、灯油を燃
料とするバーナを用いてもよく、また、電熱線により熱
交換を行う構成としてもよい。
In the present embodiment, a burner using gas as fuel is shown as the heating means of the present invention. However, a burner using kerosene as fuel may be used. It may be.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の追焚き付き給湯器の全体構成図。FIG. 1 is an overall configuration diagram of a water heater with reheating according to the present invention.

【図2】図1に示した追焚き付き給湯器の制御ブロック
図。
FIG. 2 is a control block diagram of the water heater with additional heating shown in FIG.

【符号の説明】[Explanation of symbols]

1…追焚き付き給湯器、2…給湯管路、3…追焚き管
路、4…浴槽、5…第1バーナ、6…第2バーナ、7…
追焚き熱交換器、8…給湯熱交換器、9…バイパス管、
10…バイパスサーボ、11…給湯サーミスタ、12…
熱交サーミスタ、13…水量センサ、14…湯量サー
ボ、15…注湯電磁弁、16…逆止弁、17…ポンプ、
18…風呂サーミスタ、19…風呂水流スイッチ、20
…湯量センサ
DESCRIPTION OF SYMBOLS 1 ... Hot water heater with additional heating, 2 ... Hot water supply line, 3 ... Additional heating line, 4 ... Bathtub, 5 ... First burner, 6 ... Second burner, 7 ...
Refired heat exchanger, 8: hot water supply heat exchanger, 9: bypass pipe,
10 ... bypass servo, 11 ... hot water supply thermistor, 12 ...
Heat exchange thermistor, 13: water flow sensor, 14: hot water servo, 15: pouring solenoid valve, 16: check valve, 17: pump,
18 ... bath thermistor, 19 ... bath water flow switch, 20
… Hot water sensor

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3K005 KA10 3L024 CC08 DD04 DD13 DD14 DD17 DD22 DD27 EE02 EE12 FF11 GG03 GG04 GG05 GG06 GG22 GG24 GG28 GG32 GG33 HH02 HH13 HH22 HH26 HH31  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K005 KA10 3L024 CC08 DD04 DD13 DD14 DD17 DD22 DD27 EE02 EE12 FF11 GG03 GG04 GG05 GG06 GG22 GG24 GG28 GG32 GG33 HH02 HH13 HH22 HH26 HH31

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】両端が浴槽と接続されて浴槽に滞留した湯
水を循環させて追焚きするための追焚き管路と、一端が
水道と接続されて水道から供給される水を加熱して他端
から給湯するための給湯管路と、該追焚き管路を流れる
湯水を加熱する追焚き熱交換器と、その一部が該追焚き
熱交換器と重複して該給湯管路を流れる水を加熱する給
湯熱交換器と、該追焚き熱交換器と該給湯熱交換器とを
加熱する加熱手段と、該加熱手段の加熱量を調節する加
熱量調節手段と、 給湯と追焚きとを同時に実行するときに前記加熱手段が
発生する熱量のうち前記給湯熱交換器による水の加熱と
前記追焚き熱交換器による湯水の加熱とに実際に使用さ
れる熱量の割合である第1熱効率のデータと、給湯のみ
を単独で実行するときに前記加熱手段が発生する熱量の
うち前記給湯熱交換器による水の加熱に実際に使用され
る熱量の割合である第2熱効率のデータとを記憶した熱
効率データ記憶手段と、 前記給湯管路から所定温度の湯が供給されるように前記
加熱量調節手段により前記加熱手段の加熱量を制御し、
追焚きと給湯とを同時に実行するときは前記第1熱効率
のデータに基づいて前記加熱手段の加熱量を決定し、給
湯のみを単独で実行するときには前記第2熱効率のデー
タに基づいて前記加熱手段の加熱量を決定する給湯制御
手段とを備えた追焚き付き給湯器において、 前記給湯管の前記給湯熱交換器により水が加熱される箇
所の下流側と前記追焚き管路とを連通して、前記給湯熱
交換器により加熱生成された湯を、前記給湯管路から前
記追焚き熱交換器により加熱される側の前記追焚き管路
を経由して前記浴槽に供給する第1湯張り経路と、前記
給湯管路から前記追焚き熱交換器により加熱されない側
の前記追焚き管路を経由して前記浴槽に供給する第2湯
張り経路とを形成し、 前記給湯制御手段は、前記第1湯張り経路と前記第2湯
張り経路とを介して前記給湯管路から前記浴槽に湯を供
給するときには、前記第1熱効率のデータに基づいて前
記加熱手段の加熱量を決定することを特徴とする追焚き
給湯器。
1. A reheating line connected to a bathtub at both ends for recirculating hot water retained in the bathtub for reheating, and one end connected to a water supply to heat water supplied from the water supply and to heat the water. A hot-water supply line for supplying hot water from the end, a re-heating heat exchanger for heating hot water flowing through the re-heating line, and a part of the water flowing through the hot-water supply line overlapping the re-heating heat exchanger. A hot water supply heat exchanger for heating water, a heating means for heating the reheating heat exchanger and the hot water supply heat exchanger, a heating amount adjusting means for adjusting a heating amount of the heating means, and hot water supply and reheating. The first thermal efficiency, which is the ratio of the amount of heat actually used for heating the water by the hot water supply heat exchanger and heating the hot water by the additional heating heat exchanger, out of the amount of heat generated by the heating means at the same time. Data and the amount of heat generated by the heating means when only hot water is supplied alone. A heat efficiency data storage means for storing data of a second heat efficiency, which is a ratio of the amount of heat actually used for heating water by the hot water supply heat exchanger, and hot water of a predetermined temperature is supplied from the hot water supply pipe. Controlling the heating amount of the heating means by the heating amount adjusting means,
When additional heating and hot water supply are performed simultaneously, the heating amount of the heating means is determined based on the first heat efficiency data. When only hot water supply is performed alone, the heating means is determined based on the second heat efficiency data. In the hot water supply unit with hot water supply provided with hot water supply control means for determining the amount of heating, the downstream side of the portion of the hot water supply pipe where water is heated by the hot water supply heat exchanger and the additional heating line are communicated. A first hot water supply path for supplying hot water heated and generated by the hot water supply heat exchanger to the bathtub from the hot water supply pipe via the additional heating pipe on a side heated by the additional heating heat exchanger; And a second hot water supply path to be supplied from the hot water supply pipe to the bathtub through the additional heat pipe on a side not heated by the additional heat exchanger, and the hot water supply control means includes: 1 bathing route and the 2nd bathing When supplying hot water to the bathtub from the hot water supply conduit via the road, the reheating water heater and determines the heating amount of said heating means based on the data of the first thermal efficiency.
【請求項2】両端が浴槽と接続されて浴槽に滞留した湯
水を循環させて追焚きするための追焚き管路と、一端が
水道と接続されて水道から供給される水を加熱して他端
から給湯するための給湯管路と、該追焚き管路を流れる
湯水を加熱する追焚き熱交換器と、その一部が該追焚き
熱交換器と重複して該給湯管路を流れる水を加熱する給
湯熱交換器と、該追焚き熱交換器と該給湯熱交換器とを
加熱する加熱手段と、該加熱手段の加熱量を調節する加
熱量調節手段と、 給湯と追焚きとを同時に実行するときに前記加熱手段に
より与えられて前記給湯熱交換器による水の加熱と前記
追焚き熱交換器による湯水の加熱とに使用される第1熱
量のデータと、給湯のみを単独で実行するときに前記加
熱手段により与えられて前記給湯熱交換器による水の加
熱に使用される第2熱量のデータとを記憶した熱量デー
タ記憶手段と、 前記給湯管路から所定温度の湯が供給されるように前記
加熱量調節手段により前記加熱手段の加熱量を制御し、
追焚きと給湯とを同時に実行するときは前記第1熱量の
データに基づいて前記加熱手段の加熱量を決定し、給湯
のみを単独で実行するときには前記第2熱量のデータに
基づいて前記加熱手段の加熱量を決定する給湯制御手段
とを備えた追焚き付き給湯器において、 前記給湯管の前記給湯熱交換器により水が加熱される箇
所の下流側と前記追焚き管路とを連通して、前記給湯熱
交換器により加熱生成された湯を、前記給湯管路から前
記追焚き熱交換器により加熱される側の前記追焚き管路
を経由して前記浴槽に供給する第1湯張り経路と、前記
給湯管路から前記追焚き熱交換器により加熱されない側
の前記追焚き管路を経由して前記浴槽に供給する第2湯
張り経路とを形成し、 前記給湯制御手段は、前記第1湯張り経路と前記第2湯
張り経路とを介して前記給湯管路から前記浴槽に湯を供
給するときには、前記第1熱量のデータに基づいて前記
加熱手段の加熱量を決定することを特徴とする。
2. A reheating line for circulating hot water retained in the bathtub at both ends for recirculating hot water and reheating, and one end connected to a water supply to heat water supplied from the water supply. A hot-water supply line for supplying hot water from the end, a re-heating heat exchanger for heating hot water flowing through the re-heating line, and a part of the water flowing through the hot-water supply line overlapping the re-heating heat exchanger. A hot water supply heat exchanger for heating water, a heating means for heating the reheating heat exchanger and the hot water supply heat exchanger, a heating amount adjusting means for adjusting a heating amount of the heating means, and hot water supply and reheating. The first heat quantity data provided by the heating means and used for heating the water by the hot water supply heat exchanger and heating the hot and cold water by the additional heating heat exchanger at the same time, and only the hot water supply is executed independently. The water supplied by the heating means and supplied by the hot water supply heat exchanger. A calorie data storage unit that stores data of a second calorie used for heat; and a heating amount of the heating unit controlled by the heating amount adjusting unit such that hot water of a predetermined temperature is supplied from the hot water supply pipe. ,
When additional heating and hot water supply are performed simultaneously, the heating amount of the heating means is determined based on the data of the first heat quantity. When only hot water supply is performed alone, the heating means is determined based on the data of the second heat quantity. In the hot water supply unit with hot water supply provided with hot water supply control means for determining the amount of heating, the downstream side of the portion of the hot water supply pipe where water is heated by the hot water supply heat exchanger and the additional heating line are communicated. A first hot water supply path for supplying hot water heated and generated by the hot water supply heat exchanger to the bathtub from the hot water supply pipe via the additional heating pipe on a side heated by the additional heating heat exchanger; And a second hot water supply path to be supplied from the hot water supply pipe to the bathtub through the additional heat pipe on a side not heated by the additional heat exchanger, and the hot water supply control means includes: The first hot water path and the second hot water path When supplying hot water to the bathtub from the hot water supply conduit via is characterized by determining the heating amount of said heating means based on the data of the first heat.
JP2000361623A 2000-11-28 2000-11-28 Water heater with remembrance Expired - Lifetime JP3655189B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101519898B1 (en) 2012-11-13 2015-05-14 주식회사 카르빈 Power-saving hot water boiler system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101519898B1 (en) 2012-11-13 2015-05-14 주식회사 카르빈 Power-saving hot water boiler system

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