JPH07332657A - Gas volume detection device - Google Patents
Gas volume detection deviceInfo
- Publication number
- JPH07332657A JPH07332657A JP12118594A JP12118594A JPH07332657A JP H07332657 A JPH07332657 A JP H07332657A JP 12118594 A JP12118594 A JP 12118594A JP 12118594 A JP12118594 A JP 12118594A JP H07332657 A JPH07332657 A JP H07332657A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pressure sensor
- gas amount
- temperature
- amount
- 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.)
- Pending
Links
Landscapes
- Measuring Volume Flow (AREA)
- Control Of Combustion (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、家庭用ガス燃焼機のガ
ス量を検出するガス量検出装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas amount detecting device for detecting the gas amount of a domestic gas combustor.
【0002】[0002]
【従来の技術】従来この種のガス量検出では図1に示す
ように、圧力センサー1の出力値をそのまま使用してガ
ス量を計算していた。その構成を図1のガス給湯機によ
って説明する。2は公知の制御装置でその信号処理には
マイクロコンピュータが使用されている。制御装置2は
電子式ガス比例弁3を駆動することでバーナー4へ供給
するガス量をコントロールする。この時制御装置2は圧
力センサー1によりガス圧力値を検出しガス量を計算し
ながら所定のガス量になるように電子式ガス比例弁3を
駆動する。なお5は熱交換機でバーナー4で発生した高
温の燃焼排ガスにより水を湯に変えている。2. Description of the Related Art Conventionally, in this type of gas amount detection, as shown in FIG. 1, the output value of the pressure sensor 1 is used as it is to calculate the gas amount. The configuration will be described with reference to the gas water heater of FIG. Reference numeral 2 is a known control device, and a microcomputer is used for its signal processing. The controller 2 controls the amount of gas supplied to the burner 4 by driving the electronic gas proportional valve 3. At this time, the control device 2 detects the gas pressure value with the pressure sensor 1 and drives the electronic gas proportional valve 3 so as to obtain a predetermined gas amount while calculating the gas amount. In addition, 5 is a heat exchanger which converts water into hot water by the high temperature combustion exhaust gas generated in the burner 4.
【0003】また、制御装置2は圧力センサー1の出力
値をそのまま使用してガス量を計算している。Further, the control device 2 uses the output value of the pressure sensor 1 as it is to calculate the gas amount.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな従来のガス量検出装置では、圧力センサー1が図5
に示すような大きいオフセット量(圧力が0の時の圧力
センサーの出力値)及び温度による出力特性の変化を持
っているので、正確なガス量を検出する為に圧力センサ
ーを選別して使用する為、圧力センサーが高価となり安
価で正確なガス量検出装置が得られなかった。However, in such a conventional gas amount detecting device as described above, the pressure sensor 1 has the structure shown in FIG.
Since it has a large offset amount (the output value of the pressure sensor when the pressure is 0) and the change in the output characteristics due to temperature as shown in, the pressure sensor is selected and used to detect the accurate gas amount. Therefore, the pressure sensor becomes expensive, and an inexpensive and accurate gas amount detecting device cannot be obtained.
【0005】本発明は上記課題を解決するもので、安価
で正確なガス量検出装置を提供することを目的としてい
る。The present invention has been made to solve the above problems, and an object thereof is to provide an inexpensive and accurate gas amount detecting device.
【0006】[0006]
【課題を解決するための手段】本発明は上記目的を達成
するために、第1の手段はガス給湯機を運転する直前の
圧力センサーの出力値とガス給湯機を運転している時の
圧力センサーの出力値との差からガス量を算出するガス
量算出手段を設けたものである。In order to achieve the above object, the first means of the present invention is to provide an output value of a pressure sensor immediately before operating a gas water heater and a pressure when the gas water heater is operating. A gas amount calculation means for calculating the gas amount from the difference from the output value of the sensor is provided.
【0007】また、第2の手段は圧力センサーの近傍に
温度センサーを設け、温度センサーの信号によりガス量
を補正する温度補正手段を設けたものである。The second means is that a temperature sensor is provided in the vicinity of the pressure sensor, and temperature correction means for correcting the gas amount by the signal of the temperature sensor is provided.
【0008】[0008]
【作用】本発明は上記した構成により、第1手段によれ
ばガス給湯機を運転する直前の圧力センサーの出力値と
運転している時の圧力センサーの出力値との差からガス
量を算出するため、個々の圧力センサーのオフセット量
をキャンセルすることができる。According to the first aspect of the present invention, the amount of gas is calculated from the difference between the output value of the pressure sensor immediately before operating the gas water heater and the output value of the pressure sensor during operation. Therefore, the offset amount of each pressure sensor can be canceled.
【0009】また、第2手段によれば、圧力センサーの
温度を検出して温度に応じて圧力センサーの出力値を補
正することで温度による影響を少なくすることができ
る。According to the second means, the influence of the temperature can be reduced by detecting the temperature of the pressure sensor and correcting the output value of the pressure sensor according to the temperature.
【0010】[0010]
【実施例】以下、本発明の1実施例について図1を参照
しながら説明する。2は公知の制御装置でその信号処理
にはマイクロコンピュータなどが使用されている。制御
装置2は電子式ガス比例弁3を駆動するように接続さ
れ、電子式ガス比例弁3にはバーナー4が接続されてい
る。ガス量算出手段6は圧力センサー1と温度センサー
7によりその信号を受け、ガス圧力値を検出しガス量を
計算しその結果を制御装置2へ送るように接続されてい
る。なお、温度センサー7は圧力センサー内に設けても
かまわない。なお、5は交換機でバーナー4で発生した
高温の燃焼排ガスにより水を湯に変えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. Reference numeral 2 is a known control device, and a microcomputer or the like is used for its signal processing. The control device 2 is connected to drive the electronic gas proportional valve 3, and the burner 4 is connected to the electronic gas proportional valve 3. The gas amount calculation means 6 is connected to receive the signals from the pressure sensor 1 and the temperature sensor 7, detect the gas pressure value, calculate the gas amount, and send the result to the control device 2. The temperature sensor 7 may be provided inside the pressure sensor. In addition, 5 is an exchanger which changes water into hot water by high temperature combustion exhaust gas generated in the burner 4.
【0011】上記構成において動作を説明すると、ガス
量算出手段6は図3のフローチャートに従って次のよう
に動作する。 ステップ1……温度センサー7の信号により圧力センサ
ー1の温度を測定する。 ステップ2……制御装置2からの信号により機器が運転
中かどうか判定する。 ステップ3……圧力センサー1の信号により圧力測定す
る。 温度補正の計算をし機器が停止中の場合には、この圧力
値を零として扱う。機器が運転中であれば、同様の動作
により計算した圧力値を有効な値とする。なお、このよ
うな補正計算をすることによって大きなバラツキを持つ
圧力センサーでも図2の補正した圧力センサー特性図に
示したようにバラツキの少ないものとなる。 ステップ4……圧力=圧力値(有)−圧力値(0)To explain the operation of the above structure, the gas amount calculating means 6 operates as follows according to the flow chart of FIG. Step 1 ... The temperature of the pressure sensor 1 is measured by the signal of the temperature sensor 7. Step 2 ... It is judged from the signal from the control device 2 whether the equipment is in operation. Step 3: The pressure is measured by the signal from the pressure sensor 1. When the temperature correction is calculated and the equipment is stopped, this pressure value is treated as zero. If the equipment is in operation, the pressure value calculated by the same operation is used as an effective value. By performing such a correction calculation, even a pressure sensor having a large variation has a small variation as shown in the corrected pressure sensor characteristic diagram of FIG. Step 4 ... Pressure = pressure value (present) -pressure value (0)
【0012】[0012]
【数1】 [Equation 1]
【0013】K:機器のガス通路抵抗などにより決まる
定数 ステップ5……ガス量を制御装置2へ出力する。 制御装置2はガス量算出手段6のガス量信号によりガス
量が適切かどうか判断し、適切でなければ電子式ガス比
例弁3を駆動してガス量を増減し所要のガスをバーナー
4へ供給する。K: A constant determined by the gas passage resistance of the equipment Step 5 ... Outputs the gas amount to the controller 2. The control device 2 judges whether or not the gas amount is appropriate by the gas amount signal of the gas amount calculating means 6, and if not, drives the electronic gas proportional valve 3 to increase or decrease the gas amount and supply the required gas to the burner 4. To do.
【0014】このように本発明の実施例のガス量検出装
置によれば、圧力センサー1にバラツキがあっても圧力
検出特性をバラツキの少ない特性にでき、バラツキの少
ないガス量検出ができる。As described above, according to the gas amount detecting apparatus of the embodiment of the present invention, even if the pressure sensor 1 has a variation, the pressure detecting characteristic can be made a characteristic with little variation, and the gas amount can be detected with little variation.
【0015】[0015]
【発明の効果】以上の説明から明らかなように、本発明
の請求項1によるガス量検出装置では、圧力センサーに
オフセット量のバラツキがあっても演算処理を工夫する
ことで簡単にキャンセルでき安価で正確なガス量検出手
段が提供できる。As is apparent from the above description, in the gas amount detecting device according to claim 1 of the present invention, even if there is a variation in the offset amount of the pressure sensor, it can be easily canceled by devising the arithmetic processing and is inexpensive. Therefore, an accurate gas amount detecting means can be provided.
【0016】また、本発明の請求項2では圧力センサー
の特性に温度依存性があっても温度センサーと演算処理
により特性に温度依存性の少ないガス量検出装置を提供
できる。Further, according to the second aspect of the present invention, it is possible to provide a gas amount detection device having a small temperature dependency in the characteristic by the temperature sensor and the arithmetic processing even if the characteristic of the pressure sensor has the temperature dependency.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の一実施例のガス量検出装置の構成図FIG. 1 is a configuration diagram of a gas amount detection device according to an embodiment of the present invention.
【図2】同検出装置の補正した圧力センサーの特性図FIG. 2 is a characteristic diagram of a corrected pressure sensor of the detection device.
【図3】同検出装置のフローチャートFIG. 3 is a flowchart of the detection device.
【図4】従来のガス量検出装置の構成図FIG. 4 is a configuration diagram of a conventional gas amount detection device.
【図5】同検出装置の圧力センサーの特性図FIG. 5 is a characteristic diagram of a pressure sensor of the detection device.
1 圧力センサー 2 制御装置 6 ガス量算出手段 7 温度センサー 1 Pressure sensor 2 Control device 6 Gas amount calculation means 7 Temperature sensor
Claims (2)
ス給湯機を運転する直前の前記圧力センサーの出力値と
ガス給湯機を運転している時の前記圧力センサーの出力
値との差からガス量を算出するガス量算出手段とを備え
たガス量検出装置。1. From the difference between the output value of the pressure sensor provided in the gas passage and the output value of the pressure sensor immediately before operating the gas water heater and the output value of the pressure sensor when operating the gas water heater. A gas amount detecting device comprising a gas amount calculating means for calculating a gas amount.
け、前記温度センサーの信号によりガス量の温度補正す
る請求項1記載のガス量検出装置。2. The gas amount detecting device according to claim 1, wherein a temperature sensor is provided in the vicinity of the pressure sensor, and the temperature of the gas amount is corrected by the signal of the temperature sensor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12118594A JPH07332657A (en) | 1994-06-02 | 1994-06-02 | Gas volume detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12118594A JPH07332657A (en) | 1994-06-02 | 1994-06-02 | Gas volume detection device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07332657A true JPH07332657A (en) | 1995-12-22 |
Family
ID=14804966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12118594A Pending JPH07332657A (en) | 1994-06-02 | 1994-06-02 | Gas volume detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07332657A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010149919A (en) * | 2008-12-26 | 2010-07-08 | Sapporo Breweries Ltd | Liquid feed device, metering method of liquid flow rate and metering method of liquid amount |
-
1994
- 1994-06-02 JP JP12118594A patent/JPH07332657A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010149919A (en) * | 2008-12-26 | 2010-07-08 | Sapporo Breweries Ltd | Liquid feed device, metering method of liquid flow rate and metering method of liquid amount |
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