JPH0315970Y2 - - Google Patents
Info
- Publication number
- JPH0315970Y2 JPH0315970Y2 JP1984166188U JP16618884U JPH0315970Y2 JP H0315970 Y2 JPH0315970 Y2 JP H0315970Y2 JP 1984166188 U JP1984166188 U JP 1984166188U JP 16618884 U JP16618884 U JP 16618884U JP H0315970 Y2 JPH0315970 Y2 JP H0315970Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- heat
- amount
- output
- water
- 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 71
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はガス量により湯温を制御するガス瞬間
式給湯機、所謂ガス比例式の給湯機に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a gas instantaneous water heater, a so-called gas proportional water heater, which controls the temperature of hot water by the amount of gas.
（従来の技術）
従来、ガス比例式の給湯機には給湯管路に設け
た水量センサーと入水温センサーが夫々検出した
流量と入水温度及びコントロールボツクスの温度
設定部で設定した設定温度を主たる要素として必
要熱量を演算し、それに基づいてガス比例弁を制
御するフイードフオワード制御のもの、設定温度
と給湯管路に設けた出湯温センサーにより検出し
た出湯温度との差によりガス比例弁を制御するフ
イードバツク制御のもの、上記フイードフオワー
ド制御にフイードバツク制御を加えてガス比例弁
を制御するもの等種々のものがあるが、いずれも
制御方式のものにせよ、ガス比例弁の精度のバラ
ツキなどの原因により、演算された必要熱量と、
実際にバーナーで燃焼している熱量との間に誤差
が生ずることが多く、必ずしも正確な制御ができ
ているとはいえなかつた。(Prior art) Conventionally, the main factors for gas proportional water heaters are the flow rate and inlet water temperature detected by a water flow sensor and inlet water temperature sensor installed in the hot water supply pipe, respectively, and the set temperature set in the temperature setting section of the control box. Feed forward control calculates the required amount of heat and controls the gas proportional valve based on it.The gas proportional valve is controlled based on the difference between the set temperature and the hot water temperature detected by the hot water temperature sensor installed in the hot water supply pipe. There are various types of control such as those that use feedback control to control the gas proportional valve, and those that control the gas proportional valve by adding feedback control to the above-mentioned feedback control. The required amount of heat calculated based on the cause of
Errors often occurred between the amount of heat actually being combusted in the burner, and it could not always be said that accurate control was achieved.
（考案が解決しようとする問題点）
本考案が解決しようとする技術的課題は、演算
された必要熱量と、実際の燃焼熱量との誤差を検
出してガス比例弁の開度を補正することである。(Problem to be solved by the invention) The technical problem to be solved by the invention is to detect the error between the calculated required amount of heat and the actual amount of combustion heat and correct the opening degree of the gas proportional valve. It is.
（問題点を解決するための手段）
上記問題を解決するために本考案が講ずる技術
的手段は、制御回路に、給水管に設けた水量セン
サー、入水温センサー、出湯温度を設定する温度
設定手段、温度設定手段で設定された設定温度と
各センサーの検出値等に基づいて必要熱量を演算
する必要熱量演算手段、ガス比例弁に対して必要
熱量演算手段の演算結果に応じた大きさの出力を
発生する出力発生手段、ガス比例弁の二次側に設
けた圧力センサー、圧力センサーの検出値に基づ
いて実際の供給熱量を演算する実熱量演算手段、
実熱量演算手段の演算値と前記必要熱量の演算値
を比較する比較手段、比較手段の比較結果に応じ
て出力発生手段からの出力の大きさを補正する出
力補正手段を構成するものである。(Means for Solving the Problems) The technical means taken by the present invention to solve the above problems are that the control circuit includes a water flow sensor installed in the water supply pipe, an inlet water temperature sensor, and a temperature setting means for setting the outlet temperature. , a required heat amount calculation means for calculating the required heat amount based on the set temperature set by the temperature setting means and the detected value of each sensor, and an output of a size corresponding to the calculation result of the required heat amount calculation means for the gas proportional valve. a pressure sensor provided on the secondary side of the gas proportional valve; an actual heat amount calculation means that calculates the actual amount of heat to be supplied based on the detected value of the pressure sensor;
Comparing means compares the calculated value of the actual heat amount calculating means with the calculated value of the required heat amount, and output correcting means corrects the magnitude of the output from the output generating means according to the comparison result of the comparing means.
本発明の構成を第１図に基づいて説明する。 The configuration of the present invention will be explained based on FIG.
給水管に設けた水量センサー、入水温センサー
は、熱交換器へ供給される水の量と温度を常時検
出する。 A water amount sensor and an incoming water temperature sensor installed in the water supply pipe constantly detect the amount and temperature of water supplied to the heat exchanger.
上記各センサーの検出値は必要熱量を求めるた
めの演算要素となるもので、必要熱量演算手段が
各センサーの検出値、温度設定手段で設定された
設定温度等に基づいて常時連続的に必要熱量を演
算し、その演算結果に応じた大きさの出力を出力
発生手段がガス比例弁に対して送出する。ガス比
例弁は上記出力を受けて開度を変更し、ガス量を
制御する。 The detected values of each of the above-mentioned sensors serve as calculation elements for determining the required amount of heat. is calculated, and the output generating means sends an output of a magnitude according to the calculation result to the gas proportional valve. The gas proportional valve receives the above output, changes its opening degree, and controls the gas amount.
一方、圧力センサーはガス比例弁の二次側圧力
を検出しており、この圧力センサーが検出する実
際にバーナーへ供給されるガスの圧力に基づい
て、バーナーで実際に燃焼する熱量を実熱量演算
手段が演算する。この実熱量演算手段の演算値は
比較手段において前記必要熱量演算手段の演算値
と比較され、両演算値に差があるときには補正手
段が出力発生手段の出力を補正する。而してガス
比例弁の開度は補正される。 On the other hand, the pressure sensor detects the secondary side pressure of the gas proportional valve, and based on the pressure of the gas actually supplied to the burner detected by this pressure sensor, the actual amount of heat is calculated to calculate the amount of heat actually burned in the burner. The means calculate. The calculated value of the actual heat amount calculating means is compared with the calculated value of the required heat amount calculating means in the comparing means, and if there is a difference between the two calculated values, the correcting means corrects the output of the output generating means. Thus, the opening degree of the gas proportional valve is corrected.
（実施例）
以下、本考案の一実施例を図に基づいて説明す
る。(Example) Hereinafter, an example of the present invention will be described based on the drawings.
第２図においてＡは給湯機で、ガス配管１を介
して供給されるガスがバーナー２で燃焼し、給水
管３を介して供給される水が熱交換器４通過時に
加熱され、給湯管５を経て給湯器具（図示せず）
に流れるようになつている。 In FIG. 2, A is a water heater, in which gas supplied through a gas pipe 1 is combusted in a burner 2, water supplied through a water supply pipe 3 is heated as it passes through a heat exchanger 4, and a hot water supply pipe 5 is heated. Water heater (not shown)
It's starting to flow.
そして、上記ガス配管１には上流側より順次、
元電磁弁６，電磁弁７、ガバナー８、ガス比例弁
９が設けられると共に圧力センサー１０が上記ガ
ス比例弁９の二次側、具体的にはガスマニホール
ド部（図示せず）に設けられる。 Then, in the gas pipe 1, sequentially from the upstream side,
A solenoid valve 6, a solenoid valve 7, a governor 8, and a gas proportional valve 9 are provided, and a pressure sensor 10 is provided on the secondary side of the gas proportional valve 9, specifically, in a gas manifold portion (not shown).
尚、上記ガス比例弁９は印加される電圧に応じ
て弁開度が可変する従来周知の構造形態を有する
ものである。 The gas proportional valve 9 has a conventionally well-known structure in which the valve opening degree is variable depending on the applied voltage.
また、給水管３には水量センサー１１と入水温
センサー１２が前者を上流側にして設けられ、給
湯管路５には出湯温センサー１３が設けられる。 Further, the water supply pipe 3 is provided with a water amount sensor 11 and an incoming water temperature sensor 12, with the former on the upstream side, and the hot water supply pipe 5 is provided with an outlet water temperature sensor 13.
上記各センサー１０，１１，１２，１３及び弁
類６，７，９は夫々コントローラー１４に電気的
に連絡し、圧力センサー１０はガスの二次圧を、
水量センサー１１は供給される水の流量を、入水
温センサー１２は熱交換器４へ入る水の温度、即
ち入水温度を、また出湯温センサー１３は熱交換
器４から出てくる湯の温度、即ち出湯温度を夫々
検出して、制御回路１４に信号を送る。 The sensors 10, 11, 12, 13 and the valves 6, 7, 9 are electrically connected to the controller 14, and the pressure sensor 10 detects the secondary pressure of the gas.
The water flow sensor 11 measures the flow rate of supplied water, the incoming water temperature sensor 12 measures the temperature of water entering the heat exchanger 4, that is, the incoming water temperature, and the hot water temperature sensor 13 measures the temperature of hot water coming out of the heat exchanger 4. That is, the temperature of the tapped water is detected and a signal is sent to the control circuit 14.
一方、１５は給湯機Ａの機台とは別体に設けた
コントロールボツクスで、運転スイツチ１７と温
度設定手段１６を備えており、制御回路１４に電
気的に連絡している。上記温度設定手段１６によ
り設定された設定温度は制御回路１４に入力され
る。 On the other hand, reference numeral 15 denotes a control box provided separately from the base of the water heater A, which is equipped with an operation switch 17 and temperature setting means 16, and is electrically connected to the control circuit 14. The set temperature set by the temperature setting means 16 is input to the control circuit 14.
制御回路１４は給湯機Ａの機台内に配備されて
おり、運転スイツチ１４の「ON」操作により給
湯機Ａを運転状態となして元電磁弁６を開弁し、
「OFF」操作により給湯機Ａの運転を停止して元
電磁弁６も閉弁する。 The control circuit 14 is installed in the base of the water heater A, and when the operation switch 14 is turned ON, the water heater A is put into operation and the main solenoid valve 6 is opened.
The operation of the water heater A is stopped by the "OFF" operation, and the original solenoid valve 6 is also closed.
また、制御回路１４は水量センサー１１からの
信号を受けると、電磁弁７を開いて着火すると共
に必要熱量を演算して、その演算値に応じた大き
さの出力をガス比例弁９に送出する。 Further, when the control circuit 14 receives a signal from the water amount sensor 11, it opens the solenoid valve 7 to ignite, calculates the required amount of heat, and sends an output of a magnitude according to the calculated value to the gas proportional valve 9. .
即ち制御回路１４は水量センサー１１の検出し
た水量と、入水温センサー１２が検出した入水温
度とコントロールボツクス１５の温度設定手段１
６で設定された設定温度に基づいて必要熱量（フ
イードフオワード必要熱量という）を、また設定
温度と出湯温センサー１３が検出した出湯温度の
差により必要熱量（フイードバツク必要熱量とい
う）を夫々演算すると共にこれらフイードフオワ
ード必要熱量とフイードバツク必要熱量を加えて
トータル必要熱量を算出し、その値に応じた大き
さの出力を電圧信号としてガス比例弁９に送出す
る。 That is, the control circuit 14 uses the water amount detected by the water amount sensor 11, the inlet water temperature detected by the inlet water temperature sensor 12, and the temperature setting means 1 of the control box 15.
Calculates the required amount of heat (referred to as the required feed-forward amount of heat) based on the set temperature set in step 6, and calculates the required amount of heat (referred to as the required amount of feed-back amount of heat) based on the difference between the set temperature and the hot water temperature detected by the hot water temperature sensor 13. At the same time, the total required amount of heat is calculated by adding the required amount of heat for feedback and the required amount of heat for feedback, and an output of a magnitude corresponding to the calculated value is sent to the gas proportional valve 9 as a voltage signal.
上記必要熱量の演算は次式による。 The above required amount of heat is calculated according to the following formula.
F1＝（TS−TIN）×Ｑ×100／η…
F2＝ａ×（TS−TOUT）×Ｑ…
Ｆ＝F1＋F2
F1：フイードフオワードによる必要熱量
（Kcal／分）
F2：フイードバツクによる必要熱量（Kcal／
分）
Ｆ：最終的なガス量（Kcal／分）
Ｑ：流量（／分）
TIN：入水温度（℃）
TOUT：出湯温度
TS：設定温度（℃）
η：熱交換器の効率
ａ：比例ゲイン
而して、ガス比例弁９は上記出力の大きさに応
じて弁開度を変更し、バーナー２へ送るガス量を
増減する。 F 1 = (T S - T IN ) x Q x 100/η... F 2 = a x (T S - T OUT ) x Q... F = F 1 + F 2 F 1 : Required amount of heat due to feed forward (Kcal /min) F 2 : Required amount of heat due to feedback (Kcal/
F: Final gas volume (Kcal/min) Q: Flow rate (/min) T IN : Inlet water temperature (℃) T OUT : Output water temperature T S : Set temperature (℃) η: Heat exchanger efficiency a : Proportional gain Then, the gas proportional valve 9 changes the valve opening depending on the magnitude of the output, and increases or decreases the amount of gas sent to the burner 2.
また、制御回路１５は、圧力センサー１０から
の信号を受け、該信号により入力されるガス比例
弁９の２次側ガス圧力から実際にバーナー２で燃
焼される熱量F′を演算し、この実際の熱量と、上
記フイードフオワード必要熱量F1とフイードバ
ツク必要熱量F2を加えたトータル必要熱量Ｆを
比較し、両者間に差があるときはガス比例弁９へ
の出力の大きさを修正してガス比例弁９の開度を
補正する。 Further, the control circuit 15 receives a signal from the pressure sensor 10, calculates the amount of heat F' actually burned in the burner 2 from the secondary side gas pressure of the gas proportional valve 9 input based on the signal, and calculates the amount of heat F' actually burned in the burner 2. Compare the amount of heat F with the total required amount of heat F, which is the addition of the above required amount of heat for feed forward F1 and required amount of feed back heat F2 , and if there is a difference between the two, correct the magnitude of the output to gas proportional valve 9. to correct the opening degree of the gas proportional valve 9.
即ち、ガス２次圧とガス流量とは１対１対応す
るので、この関係を予め制御回路１５に記憶させ
ておくか又は実際の値を学習的に記憶させてお
き、圧力センサー１０の検出値ＰKg／m3に対応す
るガス流量Ｖ量Ｖm3／分を呼び出し、ガスの燃焼
熱量Ｈ Kcal／分とによつて熱量F′を演算する。 That is, since there is a one-to-one correspondence between the gas secondary pressure and the gas flow rate, this relationship is stored in advance in the control circuit 15 or the actual value is stored by learning, and the detected value of the pressure sensor 10 is The gas flow rate Vm 3 /min corresponding to PKg/m 3 is called, and the amount of heat F' is calculated based on the combustion heat of gas H Kcal/min.
F′＝Ｈ×Ｖ Kcal／分
そして、この演算された実際の熱量F′と前記ト
ータル必要熱量を比較して、演算された必要熱量
に対して実際の熱量が大きいときにはガス比例弁
９への出力を下げてガス比例弁９の開度を絞り、
必要熱量に対して実際の熱量が大きいときにはガ
ス比例弁９への出力を上げてガス比例弁９の開度
を大きくする。 F′=H×V Kcal/min Then, compare this calculated actual amount of heat F′ with the total required amount of heat, and if the actual amount of heat is larger than the calculated required amount of heat, the amount of heat applied to the gas proportional valve 9 is Lower the output and throttle the opening of the gas proportional valve 9.
When the actual amount of heat is larger than the required amount of heat, the output to the gas proportional valve 9 is increased to increase the opening degree of the gas proportional valve 9.
而して斯る給湯機Ａは熱交換器４を通過する水
に、設定温度、水量、入水温度、出湯温度等に基
づいて演算される必要熱量を確実に与えることが
できる。 Thus, the water heater A can reliably provide the water passing through the heat exchanger 4 with the required amount of heat, which is calculated based on the set temperature, water volume, incoming water temperature, outgoing water temperature, and the like.
（効果）
本考案は上記の構成であるから以下の利点を有
する。(Effects) Since the present invention has the above configuration, it has the following advantages.
１圧力センサーにより、実際にバーナーに供給
されるガス量を検知して、ガス量をフイードバツ
ク制御するので、ガス比例弁に精度のバラツキ等
があつても正確にガス量を制御することができ
る。 Since the amount of gas actually supplied to the burner is detected by a pressure sensor and the amount of gas is feedback-controlled, the amount of gas can be accurately controlled even if there are variations in accuracy of the gas proportional valve.
即ち湯温の制御を正確に行なうことができる。 In other words, the water temperature can be accurately controlled.
第１図は本発明の構成を説明する説明図、第２
図は本発明の一実施例を示すガス瞬間式給湯機の
制御装置の概略構成図である。
Ａ……給湯機、１……ガス配管、２……バーナ
ー、３……給水管、４……熱交換器、５……給湯
管、９……ガス比例弁、１０……圧力センサー、
１１……水量センサー、１２……入水温センサ
ー、１３……出湯温センサー、１６……温度設定
手段。
FIG. 1 is an explanatory diagram explaining the configuration of the present invention, and FIG.
The figure is a schematic configuration diagram of a control device for a gas instantaneous water heater showing an embodiment of the present invention. A... Water heater, 1... Gas piping, 2... Burner, 3... Water supply pipe, 4... Heat exchanger, 5... Hot water supply pipe, 9... Gas proportional valve, 10... Pressure sensor,
11...Water flow rate sensor, 12...Incoming water temperature sensor, 13...Outgoing water temperature sensor, 16...Temperature setting means.
Claims (1)
を加熱するバーナー、バーナーへガスを供給する
ガス配管に設けられ制御回路からの出力の大きさ
により開度を可変するガス比例弁を備え、ガス比
例弁によるガス量の調整によつて湯温を制御する
ガス瞬間式給湯機の制御装置であつて、前記制御
回路は給水管に設けた水量センサー、入水温セン
サー、出湯温度を設定する温度設定手段、温度設
定手段で設定された設定温度と各センサーの検出
値等に基づいて必要熱量を演算する必要熱量演算
手段、ガス比例弁に対して必要熱量演算手段の演
算結果に応じた大きさの出力を発生する出力発生
手段、ガス比例弁の二次側に設けた圧力センサ
ー、圧力センサーの検出値に基づいて実際の供給
熱量を演算する実熱量演算手段、実熱量演算手段
の演算値と前記必要熱量の演算値を比較する比較
手段、比較手段の比較結果に応じて出力発生手段
からの出力の大きさを補正する出力補正手段から
なるガス瞬間式給湯機の制御装置。 Equipped with a water supply pipe, a heat exchanger connected to the hot water supply pipe, a burner that heats the heat exchanger, and a gas proportional valve that is installed on the gas pipe that supplies gas to the burner and whose opening degree is varied depending on the magnitude of the output from the control circuit. , a control device for a gas instantaneous water heater that controls hot water temperature by adjusting the gas amount using a gas proportional valve, wherein the control circuit includes a water amount sensor installed in a water supply pipe, an inlet water temperature sensor, and a water outlet temperature setting. Temperature setting means, required heat amount calculation means for calculating the required heat amount based on the set temperature set by the temperature setting means and the detected value of each sensor, etc.; an output generating means that generates an output of 1, a pressure sensor provided on the secondary side of the gas proportional valve, an actual heat amount calculation means that calculates the actual amount of heat to be supplied based on the detected value of the pressure sensor, and a calculated value of the actual heat amount calculation means. A control device for a gas instantaneous water heater, comprising a comparison means for comparing the calculated value of the required amount of heat, and an output correction means for correcting the magnitude of the output from the output generation means according to the comparison result of the comparison means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984166188U JPH0315970Y2 (en) | 1984-10-31 | 1984-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984166188U JPH0315970Y2 (en) | 1984-10-31 | 1984-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6181556U JPS6181556U (en) | 1986-05-30 |
| JPH0315970Y2 true JPH0315970Y2 (en) | 1991-04-05 |
Family
ID=30724015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984166188U Expired JPH0315970Y2 (en) | 1984-10-31 | 1984-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0315970Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2600879Y2 (en) * | 1992-03-13 | 1999-10-25 | 株式会社ガスター | Combustion equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58178117A (en) * | 1982-04-12 | 1983-10-19 | Matsushita Electric Ind Co Ltd | Proportioning controller for gas combustion |
-
1984
- 1984-10-31 JP JP1984166188U patent/JPH0315970Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58178117A (en) * | 1982-04-12 | 1983-10-19 | Matsushita Electric Ind Co Ltd | Proportioning controller for gas combustion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6181556U (en) | 1986-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH025975B2 (en) | ||
| JPH0315970Y2 (en) | ||
| JPS62280516A (en) | Combution device | |
| JPS5885016A (en) | Combustion control device | |
| JP2734390B2 (en) | Hot water outlet temperature control method | |
| JPH07111268B2 (en) | Water heater controller | |
| JPH07310918A (en) | Combustion apparatus with proportional valve proportion valve regulating device therefor | |
| JPH0434359Y2 (en) | ||
| JP3704380B2 (en) | Combustion equipment with hot water supply function and correction data input device for the combustion equipment | |
| JPS6383546A (en) | Control device for hot water feeder | |
| JP2016044950A (en) | Water heater | |
| JP2808736B2 (en) | Water heater control device | |
| JPS6383544A (en) | Control device for hot water feeder | |
| JPH0271050A (en) | Controller for hot water supplying apparatus | |
| JP3769660B2 (en) | Water heater | |
| JPS6383545A (en) | Control device for hot water feeder | |
| JPH03175208A (en) | Automatic air/fuel ratio correction device | |
| JPH0237249A (en) | Water rate control device in hot-water heater | |
| JPH0412329Y2 (en) | ||
| JP3642135B2 (en) | Water heater | |
| JPH01150741A (en) | Control device for feed hot water temperature of hot water feeder | |
| JP2004353990A (en) | Gas combustion equipment | |
| JPH03260503A (en) | Drain water level controller for water supplying and heating device | |
| JPS60171308A (en) | Method of burning fuel in burner with reduced amount of generated nox | |
| JPS6315484B2 (en) |