JPH0373791B2 - - Google Patents
Info
- Publication number
- JPH0373791B2 JPH0373791B2 JP15940987A JP15940987A JPH0373791B2 JP H0373791 B2 JPH0373791 B2 JP H0373791B2 JP 15940987 A JP15940987 A JP 15940987A JP 15940987 A JP15940987 A JP 15940987A JP H0373791 B2 JPH0373791 B2 JP H0373791B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- temperature
- amount
- hot water
- heat exchanger
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 96
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は給湯器、特に家庭用の給湯器に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a water heater, particularly a water heater for domestic use.
（従来の技術）
先に本件出願人は昭和62年５月18日付出願の特
願昭62−122203号（特開昭63−286656号公報）で
従来の給湯器における問題点を解決して、熱交換
器の小型化、大量出湯、ドレン防止を計ると共
に、給湯温度幅と共に給湯流量幅をも広くした給
湯器を提案した。かかる給湯器の構成は、熱交換
器を通る加熱路及び前記熱交換器と並列のバイパ
ス路とで構成した給湯回路と、前記熱交換器を加
熱する加熱装置と、前記加熱装置の発熱量を制御
する能力制御装置と、給水温度を検出する水温検
出器と、混合湯温を検出する湯温検出器と、熱交
換器へ給水量を検出する流量検出器と、湯と水の
混合比率を調節する混合弁と、該混合弁を付勢す
る駆動手段と、温度設定器と、前記水温検出器と
流量検出器と温度設定器の信号により能力制御装
置を作動させると共に湯温検出器と温度設定器の
信号により前記駆動手段の付勢量を設定する制御
回路部を備えたものである。(Prior Art) The present applicant previously solved the problems in conventional water heaters in Japanese Patent Application No. 122203/1983 (Japanese Patent Application Laid-open No. 286656/1983) filed on May 18, 1988. In addition to reducing the size of the heat exchanger, producing a large amount of hot water, and preventing drainage, we proposed a water heater that has a wide range of hot water supply temperature and hot water flow rate. The configuration of such a water heater includes a hot water supply circuit including a heating path passing through a heat exchanger and a bypass path parallel to the heat exchanger, a heating device that heats the heat exchanger, and a heating device that heats the heat exchanger. A capacity control device to control, a water temperature detector to detect the water supply temperature, a hot water temperature detector to detect the mixed hot water temperature, a flow rate detector to detect the amount of water supplied to the heat exchanger, and a mixing ratio of hot water to water. A mixing valve to be adjusted, a driving means for energizing the mixing valve, a temperature setting device, and a capacity control device actuated by signals from the water temperature sensor, flow rate sensor, and temperature setting device, and a hot water temperature sensor and a temperature setting device. The device includes a control circuit section that sets the amount of energization of the drive means based on a signal from a setting device.
（発明が解決しようとする問題点）
しかしながら上記のものでは出湯開始時の発熱
量を必要発熱量より所定量多くしてあり、又混合
弁の駆動手段であるサーボモータの制御パルスは
PWM制御により混合湯温と設定湯温との偏差に
比例したパルス幅の信号としており、従つて出湯
開始時のサーボモータの動作としては第３図に示
したように当初冷水状態である為に混合弁は閉側
即ち水量減少側に駆動され、次に急激に熱交換器
が熱せられて設定湯温以上となる為混合弁は逆に
開側弁即ち水量増大側に駆動される。(Problem to be solved by the invention) However, in the above method, the calorific value at the start of hot water dispensing is increased by a predetermined amount than the required calorific value, and the control pulse of the servo motor that is the driving means of the mixing valve is
PWM control is used to generate a signal with a pulse width proportional to the deviation between the mixed water temperature and the set water temperature. Therefore, the servo motor operation at the start of hot water dispensing is initially in a cold water state as shown in Figure 3. The mixing valve is driven to the closed side, that is, to the side where the amount of water decreases, and then, as the heat exchanger is rapidly heated and the hot water temperature exceeds the set temperature, the mixing valve is driven to the open side, that is, to the side where the amount of water increases.
従つて従来のものでは出湯開始時湯温が設定湯
温に安定する迄の時間が比較的長いという問題を
有していた。 Therefore, the conventional method has a problem in that it takes a relatively long time for the hot water temperature to stabilize at the set hot water temperature at the start of hot water dispensing.
（問題点を解決するための手段）
本発明はかかる問題点を解決せんとしたもの
で、そのために本発明では前記した従来の構成に
おいて、出湯開始後混合湯温が設定湯温に上昇す
る迄の最大付勢量を、設定湯温に上昇後の最大付
勢量より大なる所定量に設定した構成としてあ
る。(Means for Solving the Problems) The present invention aims to solve these problems, and for this purpose, in the present invention, in the conventional configuration described above, after the start of hot water dispensing, the temperature of the mixed hot water rises to the set hot water temperature. The maximum energizing amount is set to a predetermined amount larger than the maximum energizing amount after the hot water temperature rises to the set temperature.
（作用）
このような構成であれば、出湯開始時の最大付
勢量を大きく設定してあるので混合弁は従来例と
比較して高速で開閉制御され、湯温が設定温度に
安定するまでの時間が短かく、又定常出湯中の最
大付勢量は上記の最大付勢量よりも抑えてあるの
で湯温のハンチングもない。(Function) With this configuration, the maximum energizing amount at the start of hot water dispensing is set to a large value, so the mixing valve is controlled to open and close at a higher speed than the conventional example, until the hot water temperature stabilizes at the set temperature. The time is short, and the maximum amount of energization during steady dispensing is lower than the maximum amount of energization mentioned above, so there is no hunting in the hot water temperature.
（実施例）
図面は本発明の一実施例を示し、１は熱交換器
２を通る加熱路３及び前記熱交換器２と並列のバ
イパス路４とで構成した給湯回路である。５は熱
交換器２を加熱するバーナ等の加熱装置、６は加
熱装置５の発熱量を制御するガス比例弁等の能力
制御装置である。７は給湯回路１の入水側に設け
られて給水温度を検出する水温検出器であり、８
は給湯回路１の出湯側に設けられて混合湯温を検
出する湯温検出器である。９は熱交換器２への流
量を検出する流量検出器で、加熱路３に配されて
いる。１０はバイパス路４に設けられてバイアス
水量を制御することにより湯水の混合比率を調節
する混合弁である。１１は温度設定器である。１
２は制御回路部で、水温検出器７と流量検出器９
と温度設定器１１の信号により能力制御装置６を
作動させる熱量制御部１３と、温度設定器１１と
湯温検出器８との信号により混合弁１０の駆動手
段であるサーボモータの付勢量を設定する付勢量
設定部１４とを内蔵している。尚１５は最大流量
を制限する水ガバナである。(Embodiment) The drawing shows an embodiment of the present invention, in which reference numeral 1 denotes a hot water supply circuit comprising a heating path 3 passing through a heat exchanger 2 and a bypass path 4 parallel to the heat exchanger 2. 5 is a heating device such as a burner that heats the heat exchanger 2; 6 is a capacity control device such as a gas proportional valve that controls the amount of heat generated by the heating device 5; 7 is a water temperature detector provided on the water inlet side of the hot water supply circuit 1 to detect the temperature of the water supply;
is a hot water temperature detector installed on the hot water outlet side of the hot water supply circuit 1 to detect the mixed hot water temperature. A flow rate detector 9 detects the flow rate to the heat exchanger 2, and is arranged in the heating path 3. A mixing valve 10 is provided in the bypass passage 4 and adjusts the mixing ratio of hot water by controlling the amount of bias water. 11 is a temperature setting device. 1
2 is a control circuit section, which includes a water temperature detector 7 and a flow rate detector 9.
The heat amount control section 13 operates the capacity control device 6 based on the signal from the temperature setting device 11, and the amount of energization of the servo motor that is the driving means for the mixing valve 10 is controlled based on the signals from the temperature setting device 11 and the hot water temperature detector 8. It has a built-in biasing amount setting section 14 for setting. Note that 15 is a water governor that limits the maximum flow rate.
上記構成における作用を説明する。供給された
水は加熱路３とバイアス路４とに分流される。加
熱路３では水温検出器７で入水温度（TC）を、
流量検出器９で流量（QH）を検出し、熱量制御
部１３に信号を送る。熱量制御部１３では温度設
定器８の信号（TS）と共にこれらのデータから
加熱装置５で燃焼させるガス量（TS−TC）×
QH（但しTS＝TS＋ｄ）で演算し、そのガス量
を流すよう能力制御装置６に信号を出す。尚、出
湯開始から混合湯温が設定湯温に達するまでは、
湯温の立上りを早める為にガス量は必要ガス量以
上のガス量を流すよう出力してある。そして加熱
路３を流れる水は熱交換器２で加熱され、冷水混
合分を見越して設定温度（TS）より少し高めの
出湯温度にされる。その後冷水と混合されるので
あるが、混合後の湯温（TM）を湯温検出器８で
検出し、TM＝TSになるよう水量制御部１４で
駆動手段の付勢量を演算し、混合弁１０を作動さ
せる。例えば、TS＝40℃で５／分の出湯を行
う場合、加熱路３から50℃の出湯をし、入水温度
TC＝20℃とすると、加熱路３には3.3／分、バ
イパス路４には1.7／分、流せばよい。従つて
能力制御装置６は50℃の出湯に対応するガス量を
流し、水量調節弁１０はバイパス水量を1.7／
分になるよう絞るのである。 The operation of the above configuration will be explained. The supplied water is divided into a heating path 3 and a bias path 4. In the heating path 3, the water temperature detector 7 measures the incoming water temperature (TC).
The flow rate detector 9 detects the flow rate (QH) and sends a signal to the heat amount control section 13. The calorie control unit 13 calculates the amount of gas to be combusted by the heating device 5 (TS - TC) x based on these data together with the signal (TS) of the temperature setting device 8.
Calculate QH (TS=TS+d) and send a signal to the capacity control device 6 to flow the amount of gas. In addition, from the start of hot water dispensing until the mixed water temperature reaches the set water temperature,
In order to speed up the rise in temperature of the water, the amount of gas is output so that it flows more than the required amount of gas. The water flowing through the heating path 3 is heated by the heat exchanger 2, and the outlet temperature is set to be slightly higher than the set temperature (TS) in anticipation of the cold water mixture. After that, it is mixed with cold water, and the hot water temperature (TM) after mixing is detected by the hot water temperature detector 8, and the water amount control unit 14 calculates the amount of energization of the driving means so that TM=TS. Activate valve 10. For example, when hot water is discharged for 5 minutes at TS = 40℃, the hot water is discharged from heating path 3 at 50℃, and the inlet water temperature is
Assuming that TC=20°C, it is sufficient to flow 3.3/min in the heating path 3 and 1.7/min in the bypass path 4. Therefore, the capacity control device 6 flows the gas amount corresponding to hot water at 50°C, and the water flow control valve 10 controls the bypass water flow by 1.7%.
Narrow it down to minutes.
ところで混合弁１０の駆動手段として用いるサ
ーボモータはPWM制御により付勢量である駆動
パルス幅が付勢量設定部１４により設定される。 By the way, the drive pulse width of the servo motor used as a driving means for the mixing valve 10 is set by the energizing amount setting section 14 through PWM control.
即ち出湯開始から混合湯温が設定湯恩に達する
迄はパルス幅（TP）は、
Tp＝（TS−TM）2 ……(1)
上記(1)式で求められ、その時の最大付勢量は基本
周期が例えば200ｍｓの場合は200ｍｓとしてあ
る。そして設定湯温に達した後の出湯中は温度偏
差｜TS−TM｜が比較的大きな場合は、
Tp＝（TS−TM）2／２ ……(2)
上記(2)式で求められ、その場合の最大付勢量は上
記出湯開始時の最大付勢量より小なる127ｍｓと
し、偏差｜TS−TM｜が比較的小さな場合は、
TPを数10ｍｓの一定値とし、偏差｜TS−TM｜
＝０の場合はTp＝０としている。 In other words, the pulse width (TP) from the start of hot water dispensing until the mixed hot water temperature reaches the set temperature is Tp = (TS - TM) 2 ... (1) It is determined by the above formula (1), and the maximum energizing amount at that time is is set to 200ms when the basic period is 200ms, for example. If the temperature deviation |TS-TM| is relatively large during tapping after reaching the set hot water temperature, then Tp=(TS-TM) 2 /2...(2) It is determined by the above equation (2), In that case, the maximum energizing amount is 127ms, which is smaller than the maximum energizing amount at the start of tapping, and if the deviation |TS-TM| is relatively small,
Set TP to a constant value of several tens of ms, and the deviation |TS-TM|
When Tp=0, Tp=0.
つまり出湯開始時は出湯中と比較して付勢量を
大きくして混合弁１０を高速で高速で制御する結
果、第４図に示したように混合湯温が設定温度に
安定する迄の時間を短縮させかつ出湯開始時の前
記ガス量制御の応答性も早まることによりオーバ
シユートも小さくなるのであり、出湯開始後の出
湯中は出湯開始時よりも付勢量が小さくなるので
ハンチングの発生が防止され制御の安定性が計ら
れるのである。 In other words, as a result of controlling the mixing valve 10 at high speed by increasing the energizing amount at the start of dispensing water compared to during dispensing, the time required for the mixed water temperature to stabilize at the set temperature as shown in Fig. 4 is By shortening the time and speeding up the responsiveness of the gas amount control at the start of dispensing, overshoot is also reduced, and since the energization amount is smaller during dispensing after the dispensing starts than at the start of dispensing, hunting is prevented. This is used to measure the stability of control.
（発明の効果）
以上のように、本発明によれば出湯開始時には
混合弁の駆動手段の最大付勢量を最大として混合
弁の動作を早くしたので、出湯開始時の湯温を短
時間のうちに安定させることができ、又、湯温が
設定湯温に達した後は上記の最大付勢量を小さく
したのでハンチングが防止でき、従つて出湯特性
を高めることができる。(Effects of the Invention) As described above, according to the present invention, the maximum energizing amount of the driving means of the mixing valve is maximized at the start of hot water dispensing to speed up the operation of the mixing valve. In addition, after the hot water temperature reaches the set hot water temperature, the maximum energizing amount is reduced, so hunting can be prevented and the hot water dispensing characteristics can be improved.
第１図は本発明の一実施例を示す全体構成図、
第２図は同制御回路部のブロツク図、第３図は従
来例の説明図、第４図は本発明における説明図で
ある。
１……給湯回路、２……熱交換器、３……加熱
路、４……バイパス路、５……加熱装置、６……
能力制御装置、７……水温検出器、８……湯温検
出器、９……流量検出器、１０……混合弁、１１
……温度設定器、１２……制御回路部。
FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
FIG. 2 is a block diagram of the control circuit section, FIG. 3 is an explanatory diagram of a conventional example, and FIG. 4 is an explanatory diagram of the present invention. 1...Hot water supply circuit, 2...Heat exchanger, 3...Heating path, 4...Bypass path, 5...Heating device, 6...
Capacity control device, 7...Water temperature detector, 8...Hot water temperature detector, 9...Flow rate detector, 10...Mixing valve, 11
... Temperature setting device, 12 ... Control circuit section.
Claims (1)
列のバイパス路とで構成した給湯回路と、前記熱
交換器を加熱する加熱装置と、前記加熱装置の発
熱量を制御する能力制御装置と、給水温度を検出
する水温検出器と、混合湯温を検出する湯温検出
器と、熱交換器への給水量を検出する流量検出器
と、湯と水の混合比率を調節する混合弁と該混合
弁を付勢する駆動手段と、温度設定器と、前記水
温検出器と流量検出器と温度設定器の信号により
能力制御装置を作動させると共に湯温検出器と温
度設定器の信号により前記駆動手段の付勢量を設
定する制御回路部とを備えたものにおいて、出湯
開始後混合湯温が設定湯温に上昇する迄の最大付
勢量を、設定湯温に上昇後の最大付勢量より大な
る所定量に設定してあることを特徴とする給湯
器。1. A hot water supply circuit configured with a heating path passing through a heat exchanger and a bypass path parallel to the heat exchanger, a heating device that heats the heat exchanger, and a capacity control device that controls the amount of heat generated by the heating device. , a water temperature detector that detects the temperature of water supply, a hot water temperature detector that detects the temperature of mixed hot water, a flow rate detector that detects the amount of water supplied to the heat exchanger, and a mixing valve that adjusts the mixing ratio of hot water and water. A driving means for energizing the mixing valve, a temperature setting device, and a capacity control device actuated by the signals from the water temperature detector, the flow rate sensor, and the temperature setting device; and a control circuit unit that sets the amount of energization of the drive means, the maximum amount of energization until the mixed water temperature rises to the set water temperature after the start of dispensing, and the maximum amount of energization after the temperature rises to the set water temperature. A water heater characterized in that the water heater is set to a predetermined amount that is larger than the amount of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15940987A JPS643461A (en) | 1987-06-25 | 1987-06-25 | Hot water feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15940987A JPS643461A (en) | 1987-06-25 | 1987-06-25 | Hot water feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS643461A JPS643461A (en) | 1989-01-09 |
| JPH0373791B2 true JPH0373791B2 (en) | 1991-11-22 |
Family
ID=15693129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15940987A Granted JPS643461A (en) | 1987-06-25 | 1987-06-25 | Hot water feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643461A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2018423543B2 (en) | 2018-05-17 | 2022-03-17 | Mitsubishi Power, Ltd. | Support-sleeve protective member and solid fuel burner provided with same |
-
1987
- 1987-06-25 JP JP15940987A patent/JPS643461A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS643461A (en) | 1989-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |