JPH0416690B2 - - Google Patents
Info
- Publication number
- JPH0416690B2 JPH0416690B2 JP14777287A JP14777287A JPH0416690B2 JP H0416690 B2 JPH0416690 B2 JP H0416690B2 JP 14777287 A JP14777287 A JP 14777287A JP 14777287 A JP14777287 A JP 14777287A JP H0416690 B2 JPH0416690 B2 JP H0416690B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- temperature
- control
- water mixing
- section
- 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 180
- 239000000446 fuel Substances 0.000 claims description 23
- 238000001514 detection method Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 238000010079 rubber tapping Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method 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、給湯器等の湯水混合制御装置に関
し、特に、出湯量を少なくした時の使用勝手を改
善した給湯器等の湯水混合制御装置に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a hot water mixing control device for a water heater, etc., and in particular, a hot water mixing control device for a water heater, etc. that has improved usability when the amount of hot water output is reduced. Regarding.
（従来技術）
第１図はミキシング型給湯器等の湯水混合制御
装置の構成を示す構成図である。(Prior Art) FIG. 1 is a configuration diagram showing the configuration of a hot water mixing control device such as a mixing type water heater.
第１図において、１は入水サーミスタ、２は水
量センサ、３は熱交換部、４はバーナ、５は比例
制御弁、６はガス電磁弁、７はバイパス水路、８
は湯水混合部、９は湯水混合弁開度検出手段（リ
ミツトスイツチ）、１０はミキシングサーミスタ、
１１は操作部、１２は制御装置である。 In Figure 1, 1 is a water inlet thermistor, 2 is a water flow sensor, 3 is a heat exchanger, 4 is a burner, 5 is a proportional control valve, 6 is a gas solenoid valve, 7 is a bypass waterway, 8
9 is a hot water mixing unit, 9 is a hot water mixing valve opening detection means (limit switch), 10 is a mixing thermistor,
Reference numeral 11 represents an operation section, and reference numeral 12 represents a control device.
従来、この種の湯水混合制御装置においては、
上記制御装置１２内で、第４図に示すように、器
具の出湯能力を十分に確保するために、湯側出湯
温度THを一定の高温に設定し（高温固定設定方
法）、例えば湯側設定温度TS′と入水温度TCとの
偏差及び湯側流量QHに基づいてフイードフオワ
ード制御でガス量が計算された後（F9）、リミツ
トスイツチ９が作動したか否かによつて湯水混合
部８が制御範囲の限界に達したか否かを判定し
（F10）、湯水混合部８が制御範囲の限界に達して
いる場合には湯水混合弁を停止させＦ１１、制御
範囲内であれば混合出湯温度TMと設定温度TSの
偏差に基づいて湯水混合部８のフイードバツク制
御が行われている（F12〜F15）。 Conventionally, in this type of hot water mixing control device,
In the control device 12, as shown in FIG. 4, the hot water side hot water outlet temperature T H is set at a constant high temperature (high temperature fixing setting method) in order to ensure sufficient hot water outlet capacity of the appliance. After the gas amount is calculated by feedforward control based on the deviation between the set temperature TS' and the water inlet temperature TC and the hot water flow rate Q H (F9), hot water mixing is performed depending on whether limit switch 9 is activated or not. It is determined whether or not the hot water mixing part 8 has reached the limit of the control range (F10), and if the hot water mixing part 8 has reached the limit of the control range, the hot water mixing valve is stopped (F11), and if it is within the control range. Feedback control of the hot water mixing section 8 is performed based on the deviation between the mixed tap water temperature T M and the set temperature TS (F12 to F15).
（発明が解決しようとする問題点）
しかし、上記の従来の方法では使用者がカラン
栓で混合湯量を絞つたときなどに、湯水量を同時
に制御、または湯量のみを制御する湯水混合弁を
使用するものでは、器具の出湯能力が最小になる
以前に所定の最低作動水量を下回つて作動しなく
なることがあり、また、水量のみを制御する湯水
混合弁を使用するものでは、湯水混合弁の制御領
域をこえて混合比率QM／QHが大きくとれなくな
り、混合出湯温度TMが所定の設定温度TSよりも
高くなるオフセツトが生じることがある。(Problem to be solved by the invention) However, in the above conventional method, when the user throttles down the amount of mixed hot water with a stopper, a hot water mixing valve is used to control the amount of hot water at the same time or only the amount of hot water. With appliances that use a hot water mixing valve that only controls water flow, the hot water mixing valve may stop working due to a drop below the specified minimum operating water flow before the hot water output capacity of the appliance reaches its minimum. Beyond the control range, the mixing ratio Q M /Q H cannot be kept large, and an offset may occur where the mixed hot water temperature T M becomes higher than the predetermined set temperature TS.
例えば、湯水量を同時に制御、または湯量のみ
を制御する湯水混合弁を使用するものでは、湯側
出湯温度THを80℃、設定温度TSを40℃、入水温
度を15℃とし、バーナが作動する最低作動水量
QH（min）が2.0／min、バーナの最小能力が3.0
号のものであるとすると、この時の最小出湯量
QM（min）は5.2l／min、加熱能力は5.2号となり、
バーナを最低能力の範囲まで使用することができ
ないと共に出湯量QMをこれ以下にすることはで
きない。 For example, in a device that uses a hot water mixing valve that controls the amount of hot water at the same time or only the amount of hot water, the hot water outlet temperature T H is 80°C, the set temperature TS is 40°C, and the incoming water temperature is 15°C, and the burner is activated. Minimum operating water flow
Q H (min) is 2.0/min, minimum burner capacity is 3.0
Assuming that it is of the same issue, the minimum amount of hot water at this time is
Q M (min) is 5.2l/min, heating capacity is 5.2,
It is not possible to use the burner to its minimum capacity, and it is not possible to reduce the amount of hot water Q M below this level.
本発明は上記の事情を考慮してなされたもので
あつて、出湯量を少なくした時の使用勝手を改善
した給湯器等の湯水混合制御装置を提供すること
を目的とする。 The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a hot water mixing control device for a water heater or the like that has improved usability when the amount of hot water dispensed is reduced.
（問題点を解決するための手段）
本発明に係る給湯器等の湯水混合制御装置は、
上記の目的を達成するために、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、混合湯温を検出する出湯温度検出手
段と、水量と湯量の比率を制御する湯水混合部
と、能力制御装置を作動させると共に湯水混合部
を作動させる制御部と、湯水混合部の弁開度を検
出する弁開度検出手段とを備え、上記制御部は弁
開度検出手段の出力により湯水混合部が制御範囲
の限界に達しているか否かを判別する判別回路
と、この判別回路の回答が肯定回路の場合には湯
水混合部の湯水混合比を固定する湯水混合比制御
部と、判別回路の回答が肯定回答の場合には入水
温度と湯側設定温度及び湯側流量に基づくフイー
ドフオワード燃料制御および混合出湯温度と設定
温度及び湯側流量に基づくフイードバツク燃料制
御を行う湯側温度制御部とで構成されたことを特
徴とする。(Means for solving the problem) The hot water mixing control device for a water heater or the like according to the present invention has the following features:
In order to achieve the above object, a hot water supply circuit including a heating path passing through a heat exchanger and a bypass path parallel to the heat exchanger; A capacity control device that controls the calorific value, a hot water temperature detection means that detects the mixed hot water temperature, a hot water mixing section that controls the ratio between the amount of water and the amount of hot water, and a control section that operates the capacity control device and the hot water mixing section. and a valve opening detection means for detecting the valve opening of the hot water mixing section, and the control section determines whether the hot water mixing section has reached the limit of the control range based on the output of the valve opening detection means. A discrimination circuit, a hot water mixture ratio control unit that fixes the hot water mixture ratio of the hot water mixing section when the answer of this discrimination circuit is affirmative, and a water inlet temperature and hot water side setting when the answer of the discrimination circuit is affirmative. It is characterized by comprising a hot water side temperature control section that performs feed forward fuel control based on temperature and hot water side flow rate, and feedback fuel control based on mixed hot water temperature, set temperature, and hot water side flow rate.
（作用）
上記の構成によれば、湯水混合部が制御範囲の
限界に達しているときには、湯水混合部のフイー
ドバツク制御を行わずに、入水温度と湯側設定温
度及び湯側流量に基づくフイードフオワード燃料
制御および混合出湯温度と設定温度及び湯側流量
に基づくフイードバツク燃料制御が行われ、湯水
混合部が制御範囲内であれば、混合出湯温度と設
定温度との偏差に基づくフイードバツク燃料制御
を行わずに、混合出湯温度と設定温度との偏差に
基づく湯水混合部のフイードバツク制御が行われ
る。その結果、器具出湯能力の全範囲を有効に活
用でき、使用勝手をよくすることができる。(Function) According to the above configuration, when the hot water mixing section has reached the limit of the control range, the feedback control of the hot water mixing section is not performed, and the feed based on the incoming water temperature, hot water side set temperature, and hot water side flow rate is controlled. Forward fuel control and feedback fuel control based on the mixed hot water temperature, set temperature, and hot water side flow rate are performed, and if the hot water mixing section is within the control range, feedback fuel control is performed based on the deviation between the mixed hot water temperature and the set temperature. Instead, feedback control of the hot water mixing section is performed based on the deviation between the mixed tap water temperature and the set temperature. As a result, the entire range of the appliance's hot water tapping capacity can be effectively utilized, making it easier to use.
（実施例） 以下、図例に基づき具体的に説明する。(Example) Hereinafter, a detailed explanation will be given based on an example of a diagram.
第１図は本発明の一実施例を示す回路図であ
り、第２図はその制御装置のブロツク回路図であ
り、第３図はその制御装置の動作の流れの要部を
示すフロー図である。 FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a block circuit diagram of the control device, and FIG. 3 is a flow diagram showing the main part of the operation flow of the control device. be.
第１図において、１は入水の温度を検出する入
水サーミスタ（入水温度検出手段）、２は加熱路
流量を検出する水量センサ（湯側流量検出手段）、
３は熱交換器、４はバーナ（加熱装置）、５は比
例制御弁（能力制御装置）、６はガス電磁開閉弁、
７は熱交換器３と並列のバイパス路、８は加熱路
１７とバイパス路７との集合部に設けられた湯水
混合部、９は湯水混合部が制御範囲の限界に達し
ているか否かを検出するリミツトスイツチ（湯水
混合弁開度検出手段）１０はミキシングサーミス
タ（出湯温度検出手段）、１１は操作部（出湯温
度設定手段）、１２は制御部である。 In FIG. 1, 1 is an inlet thermistor (inlet water temperature detection means) that detects the temperature of incoming water, 2 is a water flow sensor (hot water side flow rate detection means) that detects the heating path flow rate,
3 is a heat exchanger, 4 is a burner (heating device), 5 is a proportional control valve (capacity control device), 6 is a gas electromagnetic on-off valve,
Reference numeral 7 indicates a bypass path parallel to the heat exchanger 3, 8 indicates a hot water mixing section provided at the meeting point of the heating path 17 and the bypass path 7, and 9 indicates whether or not the hot water mixing section has reached the limit of the control range. The detection limit switch (hot water mixing valve opening detection means) 10 is a mixing thermistor (outlet hot water temperature detection means), 11 is an operation section (outlet temperature setting means), and 12 is a control section.
この制御部１２は、湯側出湯温度設定手段と、
湯側温度制御部１４と、湯水混合比制御部１５と
を備える。上記湯側温度制御部１４は、入水温度
検出手段１、湯側流量検出手段２及び湯側設定温
度TS′を設定する湯側温度設定手段１３からの入
力に基づきガス電磁開閉弁６及び比例制御弁５を
制御して湯側出湯温度THを制御するように構成
されている。上記湯水混合比制御部１５は、湯水
混合弁開度検出手段９の出力により湯水混合部８
が制御範囲の限界に達しているか否かを判別する
判別回路１５ａと、この判別回路１５ａの回答が
肯定回答の場合には湯水混合部８の湯水混合比を
固定し、否定回答の場合には出湯温度設定手段１
１及び出湯温度検出手段１０からの入力に基づい
て混合出湯温度を設定温度に一致させる方向に湯
水混合比を変更するように湯水混合部８の湯水混
合比をフイードバツク制御するフイードバツク制
御回路１５ｂとを備えている。 This control unit 12 includes a hot water side outlet temperature setting means,
It includes a hot water side temperature control section 14 and a hot water mixing ratio control section 15. The hot water side temperature control section 14 controls the gas electromagnetic on-off valve 6 and proportional control based on inputs from the inlet water temperature detection means 1, the hot water side flow rate detection means 2, and the hot water side temperature setting means 13 that sets the hot water side set temperature TS'. It is configured to control the hot water side outlet temperature T H by controlling the valve 5 . The hot water mixing ratio control section 15 controls the hot water mixing section 8 based on the output of the hot water mixing valve opening detection means 9.
If the answer of this judgment circuit 15a is affirmative, the hot water mixing ratio of the hot water mixing unit 8 is fixed, and if the answer is negative, the hot water mixing ratio is fixed. Hot water temperature setting means 1
1 and a feedback control circuit 15b that performs feedback control on the hot water mixture ratio of the hot water mixing section 8 so as to change the hot water mixture ratio in the direction of making the mixed hot water temperature match the set temperature based on the input from the hot water tapping temperature detection means 10. We are prepared.
上記湯側温度制御部１４には、ガス量演算部１
４ａが設けられ、このガス量演算部１４ａは、入
水温度検出手段１、湯側流量検出手段２及び湯側
温度設定手段の出力に加えて湯水混合比制御部１
５の判別回路１５ａ、出湯温度設定手段１１及び
出湯温度検出手段１０の出力を入力し、湯水混合
部８が制御範囲の限界に達しているときには、入
水温度TC、湯側設定温度TS′、湯側流量QHに基
づいたフイードフオワード燃料制御量GFF＝
（TS′−TC）・QHと、混合出湯温度TM、設定温度
TS、湯側流量QHに基づくフイードバツク燃料制
御量GFB＝∫（TS−TM）・QHdtとの和からなる燃
料量Ｇ＝GFF＋GFBを演算し、湯水混合部８が制
御範囲内のときには入水温度TC、湯側設定温度
TS′及び湯側流量QHに基づくフイードフオワード
燃料制御量GFF＝（TS′−TC・QHからなる燃料量
Ｇ＝GFFを演算するように構成されている。 The hot water side temperature control section 14 includes a gas amount calculation section 1
4a, and this gas amount calculation section 14a receives the outputs of the inlet water temperature detection means 1, the hot water side flow rate detection means 2, and the hot water side temperature setting means, as well as the hot water mixture ratio control section 1.
5, the outputs of the discriminating circuit 15a, the hot water temperature setting means 11, and the hot water temperature detecting means 10 are input, and when the hot water mixing part 8 has reached the limit of the control range, Feedforward fuel control amount G FF = based on side flow rate Q H
(TS′−TC)・Q H , mixed hot water temperature T M , and set temperature
Feedback fuel control amount G FB =∫(TS- TM )・Q H dt based on TS and hot water side flow rate Q H is calculated, and the fuel amount G = G FF + G FB is calculated, and the hot water mixing unit 8 is controlled. When within the range, the inlet water temperature TC, hot water side set temperature
It is configured to calculate the feed forward fuel control amount G FF = (fuel amount G = G FF consisting of TS' - TC·Q H ) based on TS' and the hot water side flow rate Q H.
上記の構成によれば、湯水混合部８が制御範囲
の限界に達しているときにはＦ１、湯水混合部８
のフイードバツク制御を行わずに、入水温度TC、
湯側設定温度TS′及び湯側流量QHに基づくフイー
ドフオワード燃料制御及び混合出湯温度TMと設
定温度TS及び湯側流量QHに基づくフイードバツ
ク燃料制御が行われ（F2）、湯水混合部８の湯水
混合比が固定される（F3）。また、湯水混合部８
が制御範囲内のときには、混合出湯温度TMと設
定温度TS及び湯側流量QHに基づくフイードバツ
ク燃料制御を行わずに、入水温度TC、湯側設定
温度TS′及び湯側流量QHに基づくフイードフオワ
ード燃料制御（F4）及び混合出湯温度TMと設定
温度TSとの偏差に基づく湯水混合部８のフイー
ドバツク制御（F5〜F7，F3）が行われる。その
結果、器具出湯能力の全範囲を有効に活用でき、
使用勝手を良くすることができる。 According to the above configuration, when the hot water mixing section 8 has reached the limit of the control range, F1, the hot water mixing section 8
Without feedback control, the inlet water temperature TC,
Feedforward fuel control based on the hot water side set temperature TS' and hot water side flow rate QH , and feedback fuel control based on the mixed hot water temperature T M , set temperature TS and hot water side flow rate QH are performed (F2), and the hot water is mixed. The hot water mixture ratio in section 8 is fixed (F3). In addition, hot water mixing section 8
is within the control range, feedback fuel control based on the mixed outlet temperature T M , set temperature TS, and hot water side flow rate Q H is not performed, but is based on the inlet water temperature TC, hot water side set temperature TS', and hot water side flow rate Q H. Feedforward fuel control (F4) and feedback control (F5 to F7, F3) of the hot water mixing section 8 based on the deviation between the mixed outlet temperature T M and the set temperature TS are performed. As a result, the full range of appliance hot water supply capacity can be utilized effectively,
Usability can be improved.
要するに本発明の制御装置は、湯水混合部８の
バイパス路７側が全開となり水側が全開となつて
湯水混合部８の制御範囲を超えたときには、混合
部の混合弁をそれ以上作動させずに全開のまま停
止させ、一方比例制御弁からなる能力制御装置を
フイードフオワード燃料制御およびフイードバツ
ク燃料制御により制御して、ガス量を絞ることに
より湯側出湯温度を低下させ、その結果混合出湯
温度を設定温度どおりになるようにしたものであ
る。 In short, when the bypass path 7 side of the hot water mixing section 8 is fully opened and the water side is fully open, exceeding the control range of the hot water mixing section 8, the control device of the present invention does not operate the mixing valve of the mixing section any further and opens the mixing valve fully. The capacity control device consisting of a one-way proportional control valve is controlled by feedforward fuel control and feedback fuel control to reduce the hot water outlet temperature on the hot water side by throttling the gas amount, and as a result, the mixed outlet temperature is reduced. The temperature is set as per the set temperature.
尚、本実施例では湯水混合部８が制御範囲内の
時、湯側出湯温度THの制御をフイードフオワー
ド燃料制御するものを示しているが、湯側出湯温
度THを検出してTH＝TS′となるようフイードバ
ツク燃料制御するものでも良いものである。又、
湯側設定温度TS′を高温（80℃）固定設定したも
のを示したが、これは可変に、例えば設定温度
TSの関数（TS′＝（TS）、但しTS′＞TS）とし
て自動的に設定されるものであつても良い。 In this embodiment, when the hot water mixing section 8 is within the control range, the hot water side outlet temperature T H is controlled by feed forward fuel, but the hot water side outlet temperature T H is detected. It is also possible to use feedback fuel control so that T H =TS'. or,
The set temperature TS′ on the hot water side is shown as being fixed at a high temperature (80℃), but this can be changed, for example, by changing the set temperature.
It may be automatically set as a function of TS (TS′=(TS), where TS′>TS).
（発明の効果）
以上説明したように本発明によれば、湯水混合
部が制御範囲の限界に達しているときには入水温
度と湯側設定温度及び湯側流量に基づくフイード
フオドワード燃料制御および混合出湯温度と設定
温度及び湯側流量に基づくフイードバツク燃料制
御を行い、湯水混合部が制御範囲の限界内である
ときには従来と同様に混合出湯温度と設定温度と
に基づく湯水混合部のフイードバツク制御が行わ
れる。すなわち混合弁の制御範囲内は湯水の混合
により出湯範囲を広げ、さらに混合弁の制御範囲
外ではガス量を絞ることによつて出湯範囲を拡大
したものである。従つて、器具の出湯能力の全範
囲を有効に使用できる使用勝手の良い湯水混合制
御装置を得ることができた。(Effects of the Invention) As explained above, according to the present invention, when the hot water mixing section reaches the limit of the control range, feed forward fuel control and mixing based on the inlet water temperature, hot water side set temperature, and hot water side flow rate are performed. Feedback fuel control is performed based on the hot water outlet temperature, set temperature, and hot water side flow rate, and when the hot water mixing section is within the limit of the control range, feedback control of the hot water mixing section is performed based on the mixed hot water outlet temperature and the set temperature as in the past. be exposed. That is, within the control range of the mixing valve, the hot water output range is expanded by mixing hot water, and outside the control range of the mixing valve, the hot water output range is expanded by restricting the amount of gas. Therefore, it was possible to obtain a hot water mixing control device that is easy to use and can effectively use the entire range of the hot water tapping capacity of the appliance.
また、湯水混合部が制御範囲の限界内であると
きにはフイードバツク燃料制御を行わないので、
制御が複雑化することはない。 In addition, feedback fuel control is not performed when the hot water mixing section is within the control range limit.
Control is not complicated.
第１図は本発明の一実施例を示す回路図であ
り、第２図はその制御装置のブロツク回路図であ
り、第３図はその制御装置の動作の流れの要部を
示すフロー図である。第４図は従来例の動作を示
すフロー図である。
３…熱交換器、４…加熱装置、５…能力制御装
置、７…バイパス路、８…湯水混合部、９…弁開
度検出手段、１０…出湯温度検出手段、１２…制
御部、１４…湯側温度制御部、１５…湯水混合比
制御部、１５ａ…判別回路、１７…加熱路。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a block circuit diagram of the control device, and FIG. 3 is a flow diagram showing the main part of the operation flow of the control device. be. FIG. 4 is a flow diagram showing the operation of the conventional example. 3... Heat exchanger, 4... Heating device, 5... Capacity control device, 7... Bypass path, 8... Hot water mixing section, 9... Valve opening detection means, 10... Hot water temperature detection means, 12... Control section, 14... Hot water side temperature control section, 15... Hot water mixture ratio control section, 15a... Discrimination circuit, 17... Heating path.
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、混合湯温を検
出する出湯温度検出手段と、水量と湯量の比率を
制御する湯水混合部と、能力制御装置を作動させ
ると共に湯水混合部を作動させる制御部と、湯水
混合部の弁開度を検出する弁開度検出手段とを備
え、上記制御部は弁開度検出手段の出力により湯
水混合部が制御範囲の限界に達しているか否かを
判別する判別回路と、この判別回路の回答が肯定
回路の場合には湯水混合部の湯水混合比を固定す
る湯水混合比制御部と、判別回路の回答が肯定回
路の場合には入水温度と湯側設定温度及び湯側流
量に基づくフイードフオワード燃料制御および混
合出湯温度と設定温度及び湯側流量に基づくフイ
ードバツク燃料制御を行う湯側温度制御部とで構
成されたことを特徴とする湯水混合制御装置。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 a heat exchanger, a capacity control device that controls the calorific value of the heating device, a hot water temperature detection means that detects the temperature of mixed hot water, a hot water mixing section that controls the ratio between the amount of water and the amount of hot water, and the ability The controller includes a control unit that operates the control device and a hot water mixing unit, and a valve opening detection means that detects a valve opening of the hot water mixing unit, and the control unit operates the hot water mixing unit based on the output of the valve opening detection unit. a discriminating circuit that determines whether or not has reached the limit of the control range; a hot water mixing ratio control unit that fixes the hot water mixing ratio of the hot water mixing section when the answer of this determining circuit is affirmative; If the answer is an affirmative circuit, the hot water side temperature control unit performs feed forward fuel control based on the inlet water temperature, hot water side set temperature, and hot water side flow rate, and feedback fuel control based on the mixed hot water exit temperature, set temperature, and hot water side flow rate. A hot water mixing control device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14777287A JPS63311043A (en) | 1987-06-12 | 1987-06-12 | Hot water mixing and control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14777287A JPS63311043A (en) | 1987-06-12 | 1987-06-12 | Hot water mixing and control apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63311043A JPS63311043A (en) | 1988-12-19 |
| JPH0416690B2 true JPH0416690B2 (en) | 1992-03-24 |
Family
ID=15437832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14777287A Granted JPS63311043A (en) | 1987-06-12 | 1987-06-12 | Hot water mixing and control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63311043A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02183733A (en) * | 1988-12-30 | 1990-07-18 | Takagi Ind Co Ltd | Hot water feed mechanism for instantaneous water boiler |
| JPH02183759A (en) * | 1988-12-30 | 1990-07-18 | Takagi Ind Co Ltd | Hot water supply temperature control method for water heater |
-
1987
- 1987-06-12 JP JP14777287A patent/JPS63311043A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63311043A (en) | 1988-12-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |