JP2000227250A - Bath hot water supplying device - Google Patents
Bath hot water supplying deviceInfo
- Publication number
- JP2000227250A JP2000227250A JP11027912A JP2791299A JP2000227250A JP 2000227250 A JP2000227250 A JP 2000227250A JP 11027912 A JP11027912 A JP 11027912A JP 2791299 A JP2791299 A JP 2791299A JP 2000227250 A JP2000227250 A JP 2000227250A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- bath
- temperature
- water
- bathtub
- 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
Landscapes
- Control For Baths (AREA)
Abstract
Description
【0001】[0001]
【発明が属する技術分野】本発明は風呂給湯装置に関す
る。特に、浴槽内の湯の追焚き用の伝熱管を給湯用の熱
交換器の水壁内に納めた1缶2水路貯湯方式の風呂給湯
装置に関する。The present invention relates to a bath water heater. In particular, the present invention relates to a one-can-two-drain hot-water storage type bath water heater in which a heat transfer tube for additional heating of hot water in a bathtub is accommodated in a water wall of a heat exchanger for hot water supply.
【0002】[0002]
【従来の技術】風呂給湯装置で貯湯部を有する、いわゆ
る貯湯式風呂給湯装置では、1缶2水路(1バーナ)方
式のものが主流である。この方式では、浴槽の追焚き回
路の熱交換部、即ち伝熱管を給湯用の熱交換器の水壁内
に収め、当該水壁内温水温度を検知しながら1箇所のバ
ーナで給湯用熱交換器を加熱することで当該給湯用熱交
換器の水壁内の水を加熱して設定温度の温水とするとと
もに、水壁内の追焚き回路の伝熱管内を流れる浴槽循環
水を間接的に加熱するようにしたものである。又、この
ような貯湯式のものではバーナに燃焼能力(燃焼熱量)
固定で断続燃焼制御のものを用いるのが一般的である。2. Description of the Related Art A so-called hot water storage type hot water supply apparatus having a hot water storage section in a bath water supply apparatus is mainly a one-can-two-water-channel (one burner) type. In this method, the heat exchange part of the reheating circuit of the bathtub, that is, the heat transfer tube is placed in the water wall of the heat exchanger for hot water supply, and the heat exchange for hot water supply is performed by one burner while detecting the temperature of the hot water in the water wall. By heating the water in the water wall of the heat exchanger for hot water supply by heating the heater to make hot water of the set temperature, the circulating water in the bath tub flowing through the heat transfer tube of the reheating circuit in the water wall is indirectly heated. It is designed to be heated. In addition, in such a hot water storage type, the burner has a combustion capacity (combustion heat quantity).
It is common to use one with fixed and intermittent combustion control.
【0003】また一方、浴槽内の湯の残量を検出する方
法としては、熱量演算方式と呼ばれるものがある。この
方法は、2缶2水路(2バーナ)方式のものに多く採用さ
れるものであり、浴槽内にバスアダプタレベル以上の残
水が存在する場合の残水量検出方法であって、浴槽内の
湯を追焚き回路内に循環させることにより浴槽内の湯の
加熱前温度を検出しておき、次いで一定時間追焚き回路
で浴槽内の湯を加熱し、追焚き終了後に再び浴槽内の湯
の焚き上がり温度を検出する。追焚き回路の燃焼能力
(燃焼熱量)は予め分かっているので、焚き上がり温度
と加熱前温度の温度差と燃焼時間とから浴槽内の残水量
を熱力学的に計算することができる。On the other hand, as a method for detecting the remaining amount of hot water in a bathtub, there is a method called a calorific value calculation method. This method is widely used for a two-can, two-channel (two-burner) type, and is a method for detecting the amount of residual water when there is residual water at or above the bath adapter level in the bathtub. The pre-heating temperature of the hot water in the bathtub is detected by circulating the hot water in the reheating circuit, and then the hot water in the bathtub is heated in the reheating circuit for a certain period of time. Detect the heating temperature. Since the combustion capacity (combustion heat amount) of the additional heating circuit is known in advance, the residual water amount in the bathtub can be thermodynamically calculated from the temperature difference between the heating temperature and the pre-heating temperature and the combustion time.
【0004】しかしながら、1缶2水路方式の貯湯式風
呂給湯装置では、1箇所のバーナによって給湯用熱交換
器の水壁内の水を加熱し、間接的に当該水壁内の追焚き
用伝熱管内を流れる浴槽循環湯を加熱しているので、熱
量演算の為の追焚き中に給湯用熱交換器の水壁内の湯
を、給湯栓を開いて出湯すると、バーナからの供給熱量
の一部がそちらに奪われ、浴槽循環湯への供給熱量、即
ち風呂能力(以下、風呂能力と記す。)が減り、バーナ
の燃焼能力(燃焼熱量)が固定されていても、焚き上が
り温度と加熱前温度の温度差と燃焼時間とから浴槽内の
残水量を熱力学的に計算することができない。この給湯
側に奪われた熱量、即ち給湯能力(以下、給湯能力と記
す。)が算出できれば、風呂能力が算出できるが、貯湯
式の場合、一般的に給湯回路に水量センサは設けられて
おらず、この計算もできない。[0004] However, in the one-can-two-channel hot-water storage type bath water heater, the water in the water wall of the heat exchanger for hot water supply is heated by a single burner, and the water for indirect reheating in the water wall is indirectly heated. Since the hot tub circulating hot water flowing through the heat pipe is heated, the hot water in the water wall of the hot water supply heat exchanger is opened and the hot water tap is opened to discharge hot water during the additional heating for calorific value calculation. A part of it is taken away, the amount of heat supplied to the bathtub circulation hot water, that is, the bath capacity (hereinafter referred to as bath capacity) decreases, and even if the burner combustion capacity (combustion heat) is fixed, The amount of residual water in the bathtub cannot be thermodynamically calculated from the temperature difference between the pre-heating temperature and the combustion time. If the amount of heat deprived to the hot water supply side, that is, the hot water supply capacity (hereinafter, referred to as hot water supply capacity) can be calculated, the bath capacity can be calculated. However, in the case of the hot water storage type, the water supply sensor is generally provided in the hot water supply circuit. Not even this calculation.
【0005】また、1缶2水路方式の貯湯式風呂給湯装
置では、給湯使用しなくても、浴槽内の湯の温度、つま
り追焚き用の伝熱管に流入する湯の温度が変化すると、
それに伴い、給湯用熱交換器の水壁内の温水を一定温度
に保持するのに必要な熱量も変化し、又、熱交換効率も
変化する為、バーナの燃焼能力(燃焼熱量)も大きく変
化する。(例えば、湯温40℃では、10℃の場合と比
較して50%以上燃焼能力が低下する。) ここでは給湯使用しない場合としたので、バーナの燃焼
能力(燃焼熱量)は、即ち風呂能力を指す。[0005] Further, in the one-can-two-drain hot-water storage type bath water heater, even if the hot water is not used, if the temperature of the hot water in the bath tub, that is, the temperature of the hot water flowing into the heat transfer tube for additional heating changes,
Along with that, the amount of heat required to maintain the hot water in the water wall of the hot water supply heat exchanger at a constant temperature also changes, and the heat exchange efficiency also changes, so the burner's combustion capacity (combustion heat) also changes greatly. I do. (For example, when the hot water temperature is 40 ° C., the combustion capacity is reduced by 50% or more as compared with the case where the hot water temperature is 10 ° C.) Since the case where the hot water supply is not used is used here, the burnability (burning heat amount) of the burner is Point to.
【0006】また、燃焼能力(燃焼熱量)可変のバーナ
を連続燃焼させる場合には、一定時間の燃料の消費量を
知ることにより与えた熱量を容易に算出できるが、バー
ナに燃焼能力(燃焼熱量)固定で断続燃焼制御のものを
用いる場合には、一定時間に与えた熱量を精度良く検知
しようとすると、当該一定時間を長くとる必要があり、
現実的ではない。故に、このことによっても焚き上がり
温度と加熱前温度の温度差と燃焼時間とから浴槽内の残
水量を熱力学的に計算することができない。よって浴槽
内の残水量を測定する為に風呂アダプタに圧力センサを
配し、風呂アダプタより上の水位について当該圧力セン
サの出力により、浴槽内の残水量を測定する方法が採ら
れている。When a burner having a variable combustion capacity (combustion heat quantity) is continuously burned, the quantity of heat given can be easily calculated by knowing the fuel consumption for a certain period of time. ) When using the fixed and intermittent combustion control type, it is necessary to lengthen the certain time in order to accurately detect the amount of heat given in a certain time,
Not realistic. Therefore, the residual water amount in the bathtub cannot be thermodynamically calculated from the temperature difference between the heating temperature and the pre-heating temperature and the combustion time. Therefore, a method has been adopted in which a pressure sensor is provided on the bath adapter to measure the amount of residual water in the bathtub, and the amount of residual water in the bathtub is measured by the output of the pressure sensor for the water level above the bath adapter.
【0007】しかしながら風呂アダプタに圧力センサを
配する方式では、施工現場で風呂アダプタから圧力セン
サの信号線を取り出し、壁内配線する必要があり、初期
施工時、及び、圧力センサ故障に伴う、交換又は修理工
事の際に多大な工数を必要としていた。However, in the method of disposing the pressure sensor on the bath adapter, it is necessary to take out the signal line of the pressure sensor from the bath adapter at the construction site and wire it inside the wall. Or, a lot of man-hours were required for repair work.
【0008】[0008]
【発明が解決しようとする課題】本発明は上述の技術的
問題点を解決するためになされたものであり、その目的
とするところは熱量演算方式によって残水量を演算する
機能を備えた1缶2水路貯湯方式の風呂給湯装置におい
て、熱量演算により正確に残水量を演算できるようにす
ることにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned technical problems, and an object of the present invention is to provide a can having a function of calculating a residual water amount by a calorific value calculation method. An object of the present invention is to make it possible to accurately calculate a residual water amount by a calorific value calculation in a two-channel hot water storage type bath water heater.
【0009】[0009]
【課題を解決するための手段】請求項1に記載の風呂給
湯装置は、1箇所のバーナによって給湯用の熱交換器を
直接加熱し、又、当該熱交換器の水壁内に配された追焚
き用の伝熱管を当該水壁内の温水で間接的に加熱する風
呂給湯装置において、浴槽内の湯温と当該水壁内温水温
度を検出するための温度検知手段を備え、当該温度検知
手段によって検知された浴槽内の湯温と当該水壁内温水
温度に基づき、熱量演算方式による残水量演算に用いる
風呂能力を求めるようにしたことを特徴としている。According to a first aspect of the present invention, there is provided a bath water heater in which a heat exchanger for hot water supply is directly heated by a single burner, and is disposed in a water wall of the heat exchanger. In a bath water heater that indirectly heats a heat transfer tube for reheating with hot water in the water wall, the bath water supply device includes a temperature detecting unit for detecting a hot water temperature in the bathtub and a hot water temperature in the water wall, The bath capacity used for calculating the remaining water amount by the calorific value calculation method is obtained based on the hot water temperature in the bathtub and the hot water temperature in the water wall detected by the means.
【0010】ここで、熱量演算方式の残水量演算とは、
浴槽内に残っている湯を所定時間加熱し、加熱開始前の
湯温と加熱終了後の湯温の温度差及びその間に浴槽内の
湯に与えられた熱量から残水量を求める方法である。ま
た、浴槽内の湯温によって熱量演算方式による残水量演
算に用いる燃焼能力、すなわち風呂能力を決めるために
は、予め浴槽内湯温と給湯熱交換器の水壁内温水温度と
風呂能力との関係を記憶装置などに記憶させておく。こ
こで浴槽内湯温は循環回路の戻り湯温を循環回路途中に
配した温度センサで検知しても良いし、浴槽の風呂アダ
プタに温度センサを配して直接検知しても良く、又、そ
の他の方法でも直接、或いは間接的に浴槽内湯温を検知
できる方法で有れば構わない。以下の説明ではこの浴槽
内湯温を風呂温度と記す。又、給湯熱交換器の水壁内温
水温度も、その検知位置により検知値は異なるが、当該
水壁内温水温度を直接、或いは間接的に検知できる位置
であれば良い。以下の説明ではこの水壁内温水温度を缶
体温度と記す。[0010] Here, the residual water amount calculation of the calorific value calculation method is as follows.
In this method, the hot water remaining in the bathtub is heated for a predetermined time, and the remaining water amount is determined from the temperature difference between the hot water temperature before the start of the heating and the hot water temperature after the end of the heating and the amount of heat applied to the hot water in the bathtub during that time. Further, in order to determine the combustion capacity used for calculating the residual water amount by the calorific value calculation method, that is, the bath capacity, based on the temperature of the hot water in the bathtub, the relationship between the hot water temperature in the bathtub, the hot water temperature in the water wall of the hot water supply heat exchanger, and the bath capacity is determined in advance. Is stored in a storage device or the like. Here, the temperature of the hot water in the bathtub may be detected by a temperature sensor disposed in the middle of the circulation circuit, or directly detected by disposing a temperature sensor on a bath adapter of the bathtub. Any method may be used as long as the method can directly or indirectly detect the temperature of hot water in the bathtub. In the following description, the temperature of the hot water in the bathtub is referred to as a bath temperature. Although the detection value of the hot water temperature in the water wall of the hot water supply heat exchanger differs depending on the detection position, any position may be used as long as it can directly or indirectly detect the hot water temperature in the water wall. In the following description, this hot water temperature in the water wall is referred to as the can body temperature.
【0011】本発明の風呂給湯装置にあっては、風呂温
度、及び、缶体温度に応じて残水量演算に用いる風呂能
力を求めるようにしているので、風呂温度、及び、缶体
温度に応じて補正された風呂能力の値を用いることがで
き、いわゆる1缶2水路貯湯方式の風呂給湯装置で、バ
ーナに燃焼能力(燃焼熱量)固定で断続燃焼制御のもの
を用いる場合においても熱量演算によって浴槽内の残水
量を正確に求めることができる。In the bath water heater of the present invention, the bath capacity used for calculating the remaining water amount is determined according to the bath temperature and the can body temperature. It is possible to use a bath water heater of a so-called one-can, two-channel hot-water storage system, in which the burner has a fixed burning capacity (combustion heat quantity) and has an intermittent combustion control. The amount of residual water in the bathtub can be accurately obtained.
【0012】[0012]
【発明の実施の形態】図1は本発明の一実施形態による
1缶2水路貯湯方式の風呂給湯装置1を示す概略構成図
である。この風呂給湯装置1はオイルを燃料とするオイ
ル式であって、給湯用熱交換器2の下部にオイルを燃焼
させるためのバーナ3が設けられており、オイルポンプ
5によりオイル供給管4からオイルが供給され、缶体サ
ーミスタ9で検知された缶体温度を設定温度に保持すべ
く燃焼能力(燃焼熱量)固定で断続燃焼制御される。ま
た、バーナ3の上部には燃焼用の空気を強制的に送り込
むための送風機6が設けられており、送風機6から強制
送風された空気や排気ガス等は排気筒7から外部へ排出
される。また、給湯用熱交換器2の水壁内には浴槽28
のバスアダプタ29に接続された追焚き回路40の追焚
き用熱交換部である伝熱管8が配設されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic configuration diagram showing a one-can-two-channel hot-water storage type bath water heater 1 according to an embodiment of the present invention. The bath water heater 1 is of an oil type using oil as a fuel, and a burner 3 for burning oil is provided below the heat exchanger 2 for hot water supply. Is supplied, and intermittent combustion control is performed with a fixed combustion capacity (combustion heat quantity) so as to maintain the can body temperature detected by the can body thermistor 9 at a set temperature. A blower 6 for forcibly sending air for combustion is provided above the burner 3, and air, exhaust gas and the like forcedly blown from the blower 6 are discharged to the outside from an exhaust pipe 7. Further, a bathtub 28 is provided in the water wall of the heat exchanger 2 for hot water supply.
A heat transfer tube 8 which is a heat exchange unit for additional heating of the additional heating circuit 40 connected to the bus adapter 29 is provided.
【0013】給湯路30は、給湯用熱交換器2の入水側
に接続された入水路10と出湯側に接続された出湯路1
1とからなり、入水路10には逆止弁12、減安弁13
が設けられている。しかして、出湯路11の管端に設け
られた給湯栓16が開かれると、給湯路30を流れる水
はバーナ3で熱せられている給湯用熱交換器2によって
加熱され、設定温度の湯として給湯栓16から出湯され
る。The hot water supply path 30 includes a water supply path 10 connected to the water supply side of the hot water supply heat exchanger 2 and a water supply path 1 connected to the hot water supply side.
The water inlet 10 has a check valve 12 and a safety valve 13.
Is provided. When the hot water tap 16 provided at the pipe end of the hot water supply path 11 is opened, the water flowing through the hot water supply path 30 is heated by the hot water supply heat exchanger 2 heated by the burner 3, and is turned into hot water having a set temperature. Hot water is supplied from hot water tap 16.
【0014】追焚き回路40は追焚き用熱交換部である
伝熱管8、伝熱管8に接続された戻り管19及び往き管
23からなり、戻り管19には循環ポンプ20、浴槽湯
温検知センサ21、水流スイッチ22が設けられてい
る。しかして、浴槽28内の湯を追焚きする場合には、
循環ポンプ20を運転して循環判定によりバスアダプタ
レベル以上の湯があることを確認した後、バーナ3で熱
せられている給湯用熱交換器2の水壁内に配された伝熱
管8で追焚き回路40を循環する湯を加熱し、浴槽湯温
検知センサ21で検出している浴槽28内の湯の温度が
設定温度に達すると循環ポンプ20の運転を停止する。The reheating circuit 40 includes a heat transfer tube 8 serving as a heat exchange unit for reheating, a return pipe 19 connected to the heat transfer tube 8, and a forward pipe 23. The return pipe 19 includes a circulation pump 20, a bathtub temperature detection. A sensor 21 and a water flow switch 22 are provided. However, when reheating the hot water in the bathtub 28,
After the circulation pump 20 is operated to confirm that there is hot water at or above the bus adapter level by the circulation determination, the circulation pump 20 is used to add the hot water to the heat exchanger tube 2 arranged in the water wall of the hot water supply heat exchanger 2 heated by the burner 3. The hot water circulating in the heating circuit 40 is heated, and when the temperature of the hot water in the bathtub 28 detected by the bathtub hot water temperature sensor 21 reaches the set temperature, the operation of the circulation pump 20 is stopped.
【0015】また、出湯路11の管端部分から分岐した
湯落とし込み路41は、入水路10とバイパス流量調整
弁18を備えたバイパス路17とオリフィス46を介し
て接続されるとともに、落とし込み開閉弁24及び、注
湯水量センサ25、逆止弁42、43を介して追焚き回
路40の往き管23途中に接続されており、往き管23
と戻り管19との間には逆止弁44を備えたバイパス流
路26が設けられている。しかして、浴槽28内に湯を
落とし込んで浴槽28内に湯張りする場合には、落とし
込み開閉弁24を開き、給湯路30の給湯用熱交換器2
で加熱され、出湯路11から流出した湯をオリフィス4
6で流量を規制し、追焚き回路40の往き管23に配し
た注水サーミスタ27で温度を検知しながら、バイパス
路17に設けたバイパス流量調整弁18の開度を制御す
ることで、設定温度の湯として、追焚き回路40に流し
込み、往き管23と逆止弁44を有するバイパス流路2
6を通じて戻り管19から両搬送でバスアダプタ29か
ら浴槽28内に湯を落とし込む。A dropping channel 41 branched from a pipe end portion of the tapping channel 11 is connected to the inlet channel 10 and the bypass channel 17 having the bypass flow rate adjusting valve 18 through the orifice 46 and a dropping on-off valve. 24, the pouring water amount sensor 25, and check valves 42 and 43, which are connected in the middle of the outgoing pipe 23 of the reheating circuit 40.
A bypass flow path 26 having a check valve 44 is provided between the return pipe 19 and the return pipe 19. When the hot water is dropped into the bathtub 28 to fill the bathtub 28 with water, the drop opening / closing valve 24 is opened, and the hot water supply heat exchanger 2 of the hot water supply path 30 is opened.
The hot water that has been heated in the hot water and that has flowed out of the hot water path 11
6, the flow rate is regulated, and while the temperature is detected by the water injection thermistor 27 arranged in the outgoing pipe 23 of the additional heating circuit 40, the opening degree of the bypass flow rate adjusting valve 18 provided in the bypass passage 17 is controlled to set the temperature. The hot water is poured into the reheating circuit 40, and the bypass flow path 2 having the going pipe 23 and the check valve 44 is provided.
The hot water is dropped into the bathtub 28 from the bus adapter 29 by the double transfer from the return pipe 19 through 6.
【0016】次に、このような1缶2水路貯湯方式の風
呂給湯装置1における熱量演算方式による残水量判定に
ついて説明する。この風呂給湯装置1においては、追焚
き回路40に設けられた浴槽湯温検知センサ21により
浴槽28から伝熱管8に戻る湯の温度、すなわち浴槽2
8内の湯温を検知している。給湯栓16が閉止状態で風
呂単独使用時には、この浴槽湯温検知センサ21により
検知されている浴槽28内の湯温、即ち風呂温度と、バ
ーナ3から給湯用熱交換器2の水壁内に配された伝熱管
8に与えられる熱量、即ち風呂能力との間には例えば図
2の(a1)に示すような相関関係が存在する。この相
関関係は実験的に得ることができる。そこで、浴槽湯温
検知センサ21により測定される風呂温度が、例えば
0.5℃変化する毎に風呂能力を測定し、風呂温度と風
呂能力との関係をテーブル形式で(あるいは、関数とし
て)コントローラの記憶装置内に記憶させておく。本実
験例では関数として次の式が得られた。 W=−230T+15600 …式 ここで、Wは標準風呂能力(Kcal/h)、Tは風呂
温度(℃)を示す。尚、標準風呂能力とは給湯栓16が
閉止状態の風呂単独使用時で、缶体温度が標準温度(こ
こでは70℃とする。)のときの風呂能力を指す。Next, a description will be given of the determination of the residual water amount by the calorific value calculation method in the bath water heater 1 of the one-can two-channel hot-water storage type. In the bath water heater 1, the temperature of the hot water returning from the bath tub 28 to the heat transfer tube 8 by the bath tub hot water temperature detection sensor 21 provided in the additional heating circuit 40, that is, the bath tub 2
8 is detected. When the hot water tap 16 is closed and the bath is used alone, the temperature of the hot water in the bath tub 28 detected by the bath hot water temperature detection sensor 21, that is, the bath temperature, and the water temperature from the burner 3 to the water wall of the heat exchanger 2 for hot water supply. For example, there is a correlation as shown in (a1) of FIG. 2 between the amount of heat given to the arranged heat transfer tubes 8, that is, the bath capacity. This correlation can be obtained experimentally. Therefore, the bath capacity is measured every time the bath temperature measured by the bathtub hot water temperature detection sensor 21 changes, for example, by 0.5 ° C., and the relationship between the bath temperature and the bath capacity is stored in a table format (or as a function). Is stored in the storage device. In this experimental example, the following equation was obtained as a function. W = −230T + 15600 formula Here, W indicates a standard bath capacity (Kcal / h), and T indicates a bath temperature (° C.). The standard bath capacity refers to the bath capacity when the bath is used alone with the hot-water tap 16 closed and the can body temperature is at the standard temperature (here, 70 ° C.).
【0017】又、給湯栓16を開放し、給湯栓から出湯
すると缶体サーミスタ9で検知される缶体温度が下が
る。給湯栓からの出湯量を変化させて(例えば6l/m
in、9l/min)、それぞれの出湯量で風呂温度と
風呂能力の関係、及び、風呂温度と缶体温度の関係を測
定し、これらをグラフに示すと風呂温度と風呂能力の関
係として図2の(b1)、(C1)の関係が得られ、風
呂温度と缶体温度の関係として図2の(b2)、(C
2)の関係が得られた。同様に、(a2)は給湯栓16
が閉止状態での風呂温度と缶体温度の関係である。この
ことは即ち、風呂温度と缶体温度を測定すれば、給湯栓
からの出湯量を測定せずとも、又、燃料の消費量を知ら
ずともそのときの風呂能力が分かるということを示して
いる。When the hot water tap 16 is opened and hot water is discharged from the hot water tap, the can body temperature detected by the can body thermistor 9 decreases. By changing the amount of hot water from the hot water tap (for example, 6 l / m
In, 9 l / min), the relationship between bath temperature and bath capacity and the relationship between bath temperature and can body temperature were measured at each hot water supply, and these were shown in a graph as the relationship between bath temperature and bath capacity. (B1) and (C1) of FIG. 2 are obtained, and (b2) and (C2) of FIG.
The relationship of 2) was obtained. Similarly, (a2) shows hot water tap 16
Is the relationship between the bath temperature and the can body temperature in the closed state. This means that if the bath temperature and the can body temperature are measured, the bath capacity at that time can be determined without measuring the amount of hot water from the hot water tap and without knowing the fuel consumption. .
【0018】これらの測定結果より図3のグラフが導か
れ、これを関数に置き換えると式が得られた。即ち、 C=1−0.025(S−U) …式 ここでSは標準缶体温度(℃)(例えば70℃とす
る。)、Uは実測缶体温度(℃)、Cは缶体温度が標準
温度のときの風呂能力に対する風呂能力の比率、であ
る。From these measurement results, the graph of FIG. 3 was derived, and when this was replaced with a function, an equation was obtained. C = 1-0.025 (S−U) where S is the standard can body temperature (° C.) (eg, 70 ° C.), U is the measured can body temperature (° C.), and C is the can body. The ratio of bath capacity to bath capacity when the temperature is the standard temperature.
【0019】故に、缶体温度に依る補正後の実風呂能力
は式のように表せる。 P=W×C …式 ここでPは補正後の実風呂能力(Kcal/h)であ
る。又、ここでは標準温度を70℃としたが、70℃に
限定されるものではなく、他の温度(例えば80℃)で
あっても構わない。Therefore, the actual bath capacity after the correction based on the can body temperature can be expressed by the following equation. P = W × C Expression where P is the corrected actual bath capacity (Kcal / h). Although the standard temperature is set to 70 ° C. here, the temperature is not limited to 70 ° C., and may be another temperature (for example, 80 ° C.).
【0020】そして、熱量演算により残水量を求めるた
めの運転を開始するときに浴槽湯温検知センサ21によ
って浴槽28内の湯温、即ち風呂温度Taを計測し、風
呂温度Taに対応する標準風呂能力の値Waを式によ
り算出し、式によりその缶体温度Uaでの標準缶体温
度時の風呂能力に対する比率Caを算出する。また、
式により補正後の実風呂能力Paを算出する。同様に熱
量演算の運転を終了するときにも浴槽湯温検知センサ2
1によって浴槽28内の湯温、即ち風呂温度Tbを計測
し、風呂温度Tbに対応する標準風呂能力の値Wbを
式により算出し、式によりその缶体温度Ubでの標準
缶体温度時の風呂能力に対する比率Cbを算出する。ま
た、式により補正後の実風呂能力Pbを算出する。つ
いで、運転開始時の実風呂能力Pa[kcal/hour]と運
転終了時の実風呂能力Pb[kcal/hour]との平均値P
mean=(Pa+Pb)/2を用いて熱量演算により残水
量を求める。すなわち、熱量演算のための追焚き運転時
間がS[hour]であるとすると、浴槽28内の残水量K
[l]は、次の式により演算することができる。 K=(Pmean×S)/(Tb−Ta) ={(Pb+Pa)×S}/2(Tb−Ta) …式When the operation for obtaining the residual water amount by the calorific value calculation is started, the bath temperature in the bathtub 28, that is, the bath temperature Ta is measured by the bathtub hot water temperature detection sensor 21, and the standard bath corresponding to the bath temperature Ta is measured. The capacity value Wa is calculated by the equation, and the ratio Ca to the bath capacity at the standard can body temperature at the can body temperature Ua is calculated by the equation. Also,
The corrected actual bath capacity Pa is calculated by the equation. Similarly, when the operation of the calorific value calculation is ended, the bathtub hot water temperature detection sensor 2
1, the temperature of the hot water in the bathtub 28, that is, the bath temperature Tb, is measured, and the value Wb of the standard bath capacity corresponding to the bath temperature Tb is calculated by an equation. The ratio Cb to the bath capacity is calculated. In addition, the corrected actual bath capacity Pb is calculated by the equation. Next, the average value P of the actual bath capacity Pa [kcal / hour] at the start of operation and the actual bath capacity Pb [kcal / hour] at the end of operation.
The residual water amount is determined by calorific value calculation using mean = (Pa + Pb) / 2. That is, assuming that the reheating operation time for calorific value calculation is S [hour], the remaining water amount K in the bathtub 28
[L] can be calculated by the following equation. K = (Pmean × S) / (Tb−Ta) = {(Pb + Pa) × S} / 2 (Tb−Ta) Equation
【0021】図4は上記のようにして熱量演算で浴槽2
8内の残水量を演算し、ついで浴槽28内の湯を追焚き
する手順を具体的に示すフロー図である。この手順に従
えば、台所リモートコントローラや浴室リモートコント
ローラ等に設けられた自動スイッチをオンにすると(S
1)、一定量Q1(例えば、10リットル)の湯又は水
を出湯路11から湯落とし込み路41及び追焚き回路4
0の往き管23、戻り管19を通じて両搬送で浴槽28
内に落とし込む(S2)。ついで、循環ポンプ20を運
転し、水流スイッチ22がオンになるか否かによって循
環判定を行なう(S3)。循環判定は、浴槽28内にバ
スアダプタレベル以上の残水が存在し、水流スイッチ2
2がオンになった場合にはOK(YES)と判定され、
浴槽28内にバスアダプタレベル以下の残水しかなく、
水流スイッチ22がオフの場合にはOKでない(NO)
と判定される。FIG. 4 shows the bathtub 2 in the calorific value calculation as described above.
FIG. 8 is a flowchart specifically showing a procedure for calculating the amount of residual water in 8 and then reheating the hot water in the bathtub 28. According to this procedure, when an automatic switch provided in a kitchen remote controller, a bathroom remote controller, or the like is turned on (S
1) A fixed amount Q1 (for example, 10 liters) of hot water or water is dropped from the tapping path 11 into the hot water dropping path 41 and the reheating circuit 4.
Bathtub 28 in both transports through the outgoing pipe 23 and return pipe 19
(S2). Next, the circulation pump 20 is operated, and the circulation is determined based on whether or not the water flow switch 22 is turned on (S3). Circulation determination is based on the fact that water remaining at a level higher than the bath adapter level is present in the bathtub 28 and the water flow switch 2
If 2 is turned on, it is determined as OK (YES),
There is only residual water below the bath adapter level in the bathtub 28,
Not OK when water flow switch 22 is off (NO)
Is determined.
【0022】循環判定がOKでない場合には、バスアダ
プタレベル以下の残水しかなく、充分な水量を落とし込
んでも浴槽28から湯が溢れる恐れがないので、一定量
の湯Q2(例えば、設定水量−10リットル)を出湯路
11から湯落とし込み路41及び追焚き回路40の往き
管23、戻り管19を通じて両搬送で浴槽28内に落と
し込む(S4)。ついで、通常の追焚き運転を行なって
浴槽28内の湯を設定温度まで焚き上げ(S12)、例
えば4時間の保温運転動作に入る(S13)。If the circulation determination is not OK, there is only remaining water below the bath adapter level, and there is no danger that hot water will overflow from the bathtub 28 even if a sufficient amount of water is dropped, so a certain amount of hot water Q2 (for example, (10 liters) is dropped into the bathtub 28 from the tapping path 11 through the dropping path 41 and the outflow pipe 23 and the return pipe 19 of the additional heating circuit 40 by both transports (S4). Next, the normal reheating operation is performed to heat the hot water in the bathtub 28 to a set temperature (S12), and a warming operation for, for example, 4 hours is started (S13).
【0023】これに対し、循環判定がOK(YES)と
なった場合には、バスアダプタレベル以上の残水が存在
し、浴槽28から溢れないように設定水位くらいまで湯
を落とし込みたいので、熱量演算により残水量を求め
る。熱量演算が開始すると、循環ポンプ20で浴槽28
内の湯を追焚き回路40に循環させながらバーナ3で給
湯用熱交換器2を加熱することで当該給湯用熱交換器の
水壁内の水を加熱して設定温度の、温水とするととも
に、水壁内の追焚き回路40の伝熱管8内を流れる浴槽
循環水を間接的に加熱する(S5)。同時に、熱量演算
開始時には、浴槽湯温検知センサ21により風呂温度T
aを、缶体サーミスタ9により缶体温度Uaを検知し、
コントローラの記憶装置に記憶する(S6)。一定時間
Sの追焚き運転が終了すると(S7)、浴槽湯温検知セ
ンサ21により終了時の風呂温度Tbを、缶体サーミス
タ9により終了時の缶体温度Ubを検知し、コントロー
ラの記憶装置に記憶する(S8)。On the other hand, if the circulation judgment is OK (YES), there is residual water higher than the bath adapter level, and it is desired to drop hot water to about the set water level so as not to overflow the bathtub 28. The remaining water amount is obtained by calculation. When the calorific value calculation starts, the circulation pump 20 and the bathtub 28
By heating the hot-water supply heat exchanger 2 with the burner 3 while circulating the hot water in the additional heating circuit 40, the water in the water wall of the hot-water supply heat exchanger is heated to a set temperature of hot water. Then, the bath circulating water flowing in the heat transfer tube 8 of the reheating circuit 40 in the water wall is indirectly heated (S5). At the same time, at the start of the calorific value calculation, the bath temperature T
a, the can body temperature Ua is detected by the can body thermistor 9,
It is stored in the storage device of the controller (S6). When the reheating operation for a fixed time S is completed (S7), the bath temperature Tb at the end is detected by the bathtub hot water temperature detection sensor 21, and the can body temperature Ub at the end is detected by the can body thermistor 9, and stored in the storage device of the controller. It is stored (S8).
【0024】こうして熱量演算のための一定時間Sの追
焚き運転が終了すると、開始時及び終了時の風呂温度T
a、Tb及び、缶体温度Ua、Ubが記憶装置から読み
出され、コントローラにより開始時の風呂温度Ta、缶
体温度Uaに対応した実風呂能力Paと終了時の風呂温
度Tb、缶体温度Ubに対応した実風呂能力Pbとがテ
ーブルから読み取られ、ついで上記式によって残水量
Kが演算される(S9)。When the reheating operation for a predetermined time S for calorific value calculation is completed in this way, the bath temperature T at the start and at the end is set.
a, Tb and the can body temperatures Ua, Ub are read from the storage device, and the controller is used to start the bath temperature Ta, the actual bath capacity Pa corresponding to the can body temperature Ua, the end bath temperature Tb, and the can body temperature. The actual bath capacity Pb corresponding to Ub is read from the table, and the remaining water amount K is calculated by the above equation (S9).
【0025】残水量Kが求まると、コントローラは浴槽
28への注湯が必要かどうか判断し(S10)、必要で
あると判断すれば、設定水量(設定水位までの水量)か
ら残水量Kを引いた湯量を浴槽28に落とし込んだ後
(S11)、また残水量Kが設定水量に近くて注湯が必
要ないと判断すれば直ちに、通常の追焚き運転を行なっ
て浴槽28内の湯を設定温度まで焚き上げ(S12)、
例えば4時間の保温運転動作に入る(S13)。When the remaining water amount K is obtained, the controller determines whether or not it is necessary to pour water into the bathtub 28 (S10). If it is necessary, the controller determines the remaining water amount K from the set water amount (water amount up to the set water level). After dropping the amount of hot water drawn into the bathtub 28 (S11), and as soon as it is determined that the remaining water amount K is close to the set water amount and pouring is not necessary, a normal reheating operation is performed to set the hot water in the bathtub 28. Heat up to temperature (S12),
For example, a warming operation for 4 hours is started (S13).
【0026】この実施形態においては、熱量演算のため
の追焚き運転開始時と終了時に風呂温度と缶体温度を検
出し、風呂温度と缶体温度に応じた実風呂能力を用いて
いるので、精度よく残水量を求めることができる。ま
た、この追焚き開始時の実風呂能力と終了時の実風呂能
力の平均値を用いているので、簡単な演算により一層残
水量の演算精度を高めることができる。In this embodiment, the bath temperature and the can body temperature are detected at the start and end of the reheating operation for calorific value calculation, and the actual bath capacity according to the bath temperature and the can body temperature is used. The residual water amount can be obtained with high accuracy. Further, since the average value of the actual bath capacity at the start of the additional heating and the actual bath capacity at the end of the additional heating is used, the calculation accuracy of the residual water amount can be further improved by a simple calculation.
【0027】なお、上記実施形態では、開始時と終了時
のみに風呂温度と缶体温度を検出したが、一定時間毎に
風呂温度と缶体温度を検知し、一定時間毎に変化する実
風呂能力を求め、その値を積算して実風呂能力の平均値
を求めるようにしてもよい。あるいは、テーブル内に風
呂温度と缶体温度の一定温度(例えば、0.5℃)毎の
実風呂能力値を有している場合には、一定温度毎の時間
間隔を計測し、時間間隔とその時の風呂能力値との積を
積算して実風呂能力の平均値を求めるようにしてもよ
い。In the above embodiment, the bath temperature and the can body temperature are detected only at the start and end times. However, the bath temperature and the can body temperature are detected at regular time intervals, and the actual bath temperature changes at regular time intervals. The capacity may be obtained, and the values may be integrated to obtain an average value of the actual bath capacity. Alternatively, if the table has actual bath capacity values for each of a constant temperature (for example, 0.5 ° C.) of the bath temperature and the can body temperature, the time interval for each constant temperature is measured, and the time interval is determined. The product of the bath capacity value at that time may be integrated to obtain the average value of the actual bath capacity.
【0028】又、上記実施形態では、循環ポンプ20の
循環流量は検知していないが、前もって循環ポンプ20
による循環流量を変化させて、循環流量毎に図2、図3
に示されるデータを実験的に求め、テーブル形式で、あ
るいは関数として何種類か(例えば循環流量8l/mi
nから1l毎に17l/minまで10種類)持ってお
き、追焚き回路40の往き管23、又は戻り管19に循
環流量センサを配して循環流量を検知し、その循環流量
での実風呂能力を求めるようにしてもよく、この場合、
コストの増加を伴うが、残水量を更に精度良く求めるこ
とが可能となる。In the above embodiment, the circulation flow rate of the circulation pump 20 is not detected, but the circulation pump 20
2 and 3 for each circulating flow
Is obtained experimentally, and several types of data (for example, a circulation flow rate of 8 l / mi) are obtained in a table form or as a function
n from 10 to 17 l / min for each 1 l), and circulating flow sensor is arranged on the outgoing pipe 23 or the return pipe 19 of the additional heating circuit 40 to detect the circulating flow rate, and the actual bath at the circulating flow rate You may ask for abilities, in which case
Although the cost is increased, the remaining water amount can be obtained with higher accuracy.
【0029】又、循環流量の検知方法は流量センサによ
る方法に限らず、簡易的に浴槽湯温検知センサ21と注
水サーミスタ27との検知温度差から求めても良い。こ
の場合、前もって給湯栓16閉止で、缶体サーミスタ検
知温度安定状態(例えば70℃)での浴槽湯温検知セン
サ21と注水サーミスタ27との検知温度差と循環流量
との関係を実験的に求めておき、テーブル形式で、ある
いは関数として持っておく。この方法では流量の検知精
度は流量センサによる方法より劣るが、コストの増加を
伴うことが無く経済的である。The method of detecting the circulating flow rate is not limited to the method using a flow rate sensor, but may be simply obtained from the detected temperature difference between the bathtub hot water temperature detection sensor 21 and the water injection thermistor 27. In this case, the relationship between the detected temperature difference between the bathtub hot water temperature detection sensor 21 and the water injection thermistor 27 in the can body thermistor detection temperature stable state (for example, 70 ° C.) and the circulation flow rate is experimentally obtained by closing the hot water tap 16 in advance. In advance, keep it in a table format or as a function. In this method, the detection accuracy of the flow rate is inferior to the method using the flow sensor, but it is economical without increasing the cost.
【図1】本発明の一実施形態による貯湯式1缶2水路方
式の風呂給湯装置の構成を示す図である。FIG. 1 is a diagram showing a configuration of a hot water storage type one-can two-channel water heater system according to an embodiment of the present invention.
【図2】風呂温度と風呂能力、缶体温度との関係を示す
グラフである。FIG. 2 is a graph showing a relationship between bath temperature, bath capacity, and can body temperature.
【図3】缶体温度差と風呂能力変化率の関係を示すグラ
フである。FIG. 3 is a graph showing a relationship between a can body temperature difference and a bath capacity change rate.
【図4】図1の風呂給湯装置において浴槽内の湯を追焚
き処理する手順を示すフロー図である。FIG. 4 is a flowchart showing a procedure for reheating the hot water in the bathtub in the bath water heater of FIG. 1;
1 風呂給湯装置 2 給湯用熱交換器 3 バーナ 9 缶体サーミスタ 11 出湯路 20 循環ポンプ 21 浴槽湯温検知センサ 22 水流スイッチ 27 注水サーミスタ 28 浴槽 30 給湯路 31 コントローラ 40 追焚き回路 41 湯落とし込み路 50 安全弁 51 空焚き安全装置 52 ストレーナ DESCRIPTION OF SYMBOLS 1 Bath hot water supply apparatus 2 Heat exchanger for hot water supply 3 Burner 9 Can body thermistor 11 Hot water outlet 20 Circulation pump 21 Bath water temperature detection sensor 22 Water flow switch 27 Water injection thermistor 28 Bath tub 30 Hot water supply path 31 Controller 40 Reheating circuit 41 Hot water drop-in path 50 Safety valve 51 Empty firing safety device 52 Strainer
Claims (1)
器を直接加熱し、又、当該熱交換器の水壁内に配された
追焚き用の伝熱管を当該水壁内の温水で間接的に加熱す
る風呂給湯装置において、浴槽内の湯温と当該水壁内温
水温度を検出するための温度検知手段を備え、当該温度
検知手段によって検知された浴槽内の湯温と当該水壁内
温水温度に基づき、熱量演算方式による残水量演算に用
いる風呂能力を求めるようにしたことを特徴とする風呂
給湯装置。1. A heat exchanger for hot water supply is directly heated by one burner, and a heat transfer tube for additional heating disposed in a water wall of the heat exchanger is indirectly heated by hot water in the water wall. A hot water supply apparatus for electrically heating, comprising a temperature detecting means for detecting a hot water temperature in the bathtub and a hot water temperature in the water wall, and a hot water temperature in the bathtub detected by the temperature detecting means and a water temperature in the water wall. A bath water heater, wherein a bath capacity used for calculating a residual water amount by a calorific value calculation method is obtained based on a hot water temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02791299A JP3952485B2 (en) | 1999-02-04 | 1999-02-04 | Bath water heater |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02791299A JP3952485B2 (en) | 1999-02-04 | 1999-02-04 | Bath water heater |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000227250A true JP2000227250A (en) | 2000-08-15 |
JP3952485B2 JP3952485B2 (en) | 2007-08-01 |
Family
ID=12234107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP02791299A Expired - Fee Related JP3952485B2 (en) | 1999-02-04 | 1999-02-04 | Bath water heater |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3952485B2 (en) |
-
1999
- 1999-02-04 JP JP02791299A patent/JP3952485B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3952485B2 (en) | 2007-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10824178B2 (en) | Heating and hot water supply apparatus and control method thereof | |
KR100968701B1 (en) | Method for controlling hot-water temperature of a boiler according to direct water temperature in the boiler with fast hot-water function | |
JP6540378B2 (en) | Combined heat source machine | |
JP2000227250A (en) | Bath hot water supplying device | |
JP3748681B2 (en) | One can two water bath hot water heater | |
JP3531508B2 (en) | Bath water heater | |
JP3834423B2 (en) | One can multi-channel combustion equipment | |
JP3872903B2 (en) | One can multi-channel water heater | |
JP4310894B2 (en) | Hot water storage water heater | |
JP3822721B2 (en) | One can two water bath hot water heater | |
JP3881190B2 (en) | Water heater with remembrance | |
JP3859822B2 (en) | 1 can 2 water channel type water heater | |
JPH10111012A (en) | Method for measuring quantity of residual hot water in bathtub of unit bath with hot water supply function | |
JP2914857B2 (en) | Hot water supply temperature control device for fully automatic bath equipment | |
JPH11141987A (en) | Water heater and method for controlling it | |
JP3784469B2 (en) | Bath equipment | |
JP3748593B2 (en) | Bath kettle with water heater | |
JPH09273810A (en) | Measuring method of residual hot-water volume in bathtub of bath boiler unit with hot-water supply function | |
KR20160006929A (en) | Hot water supply system | |
JPH11294852A (en) | Hot water supplier | |
JP3843875B2 (en) | Combustion device | |
JPH1038370A (en) | Combustion device | |
JP2002013815A (en) | Hot water storage type hot water supply apparatus | |
JP2002228262A (en) | Hot water storage type warm water heater | |
JPH08193751A (en) | Hot water feeder and method for controlling hot water filling and hot water feeding |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20051018 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20070409 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20070422 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110511 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110511 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120511 Year of fee payment: 5 |
|
LAPS | Cancellation because of no payment of annual fees |