JPS61161361A - Fluid heating device - Google Patents

Fluid heating device

Info

Publication number
JPS61161361A
JPS61161361A JP60001061A JP106185A JPS61161361A JP S61161361 A JPS61161361 A JP S61161361A JP 60001061 A JP60001061 A JP 60001061A JP 106185 A JP106185 A JP 106185A JP S61161361 A JPS61161361 A JP S61161361A
Authority
JP
Japan
Prior art keywords
flow rate
heating
temperature
flow
fluid
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
Application number
JP60001061A
Other languages
Japanese (ja)
Inventor
Yukio Nagaoka
行夫 長岡
Masaru Saijo
賢 西城
Yoshiyuki Yokoajiro
義幸 横網代
Yoshio Yamamoto
山本　芳雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP60001061A priority Critical patent/JPS61161361A/en
Publication of JPS61161361A publication Critical patent/JPS61161361A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/085—Regulating fuel supply conjointly with another medium, e.g. boiler water using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/18—Measuring temperature feedwater temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

PURPOSE:To make the detecting part of a fluid heating device simpler by a structure wherein a flow detecting device consisting of a detecting temperature sensor made of a temperature-dependent resistor and a heating temperature sensor to be heated by energizing. CONSTITUTION:When the power supply is put to work and a temperature is set by a user, immediately the maximum flow rate to a heat exchanger 9 is calculated by comparing the signal of a temperature setter 22 and that of an outlet temperature detector 18. Next, when fluid to be heated is supplied to the heat exchanger 9, a flow detecting device 17 detects the flow rate of the fluid to be heated, resulting in causing to supply fuel to a heating device 10 in order to heat the fluid to be heated at the heating exchanger 9. The flow signal of a flow calculating circuit 25 is compared with the set value at a flow setting circuit 24, resulting in displacing a flow control valve 6 by means of a driving device 14 so as to control the flow rate. The motor 12 of the driving device 14 can be rotated in both directions so as to increase and decrease the flow rate by the signal of a flow control circuit 26. Concretely, when the flow rate is larger than the flow rate set at the flow setting circuit 24, the motor 12 actuates so as to close the flow control valve 6, while when smaller, the motor actuates so as to open the flow control valve 6.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は流体加熱装置の被加熱流体の流量制御に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to controlling the flow rate of a fluid to be heated in a fluid heating device.

従来の技術 一般に流体加熱装置では、加熱能力以上に被加熱流体が
供給されて出口温度が低下することを防止するために、
例えば特開昭５８−１５８４４４号公報のように被加熱
流体の入口温度検出器と出口温度設定器との偏差信号に
より被加熱流体の設定流量を演算し、その設定流量と流
量検出装置の信号との偏差によって流量制御器を駆動し
被加熱流体の流量を制御していた。BACKGROUND OF THE INVENTION In general, in a fluid heating device, in order to prevent the outlet temperature from decreasing due to the supply of the fluid to be heated in excess of the heating capacity,
For example, as disclosed in Japanese Patent Application Laid-Open No. 58-158444, the set flow rate of the heated fluid is calculated based on the deviation signal between the inlet temperature detector and the outlet temperature setter of the heated fluid, and the set flow rate and the signal of the flow rate detection device are calculated. The flow rate controller was driven by the deviation of the flow rate to control the flow rate of the heated fluid.

発明が解決しようとする問題点 しかしながら上記のような構成では人口温度検出器と出
口温度検出器と流量検出装置の３つの検出器が必要にな
り、復線になるとともに高価になるという欠点があった
。Problems to be Solved by the Invention However, the above configuration requires three detectors: a population temperature detector, an outlet temperature detector, and a flow rate detection device, which has the disadvantage of requiring a return line and becoming expensive. .

本発明はかかる従来の問題を解消するもので、流体加熱
装置の検出部を簡略化することを目的とする。The present invention solves such conventional problems and aims to simplify the detection section of a fluid heating device.

問題点を解決するための手段 上記問題点を解決するために本発明の流体加熱装置は、
被加熱流体通路にそれぞれ設けられた温度依存性抵抗器
からなる温度検出感温器と通電加熱される加熱感温器と
で構成された流量検出装置と、この流量検出装置と連絡
された熱交換器と、この熱交換器の加熱装置と、温度設
定器と、この温度設定器と前記温度検出感温器との信号
を演算する流量設定回路と、この流量設定回路と前記流
量検出装置との信号によって被加熱体流量を制御する流
量制御装置を備えたものである。Means for Solving the Problems In order to solve the above problems, the fluid heating device of the present invention includes:
A flow rate detection device consisting of a temperature detection thermosensor consisting of a temperature-dependent resistor provided in each heated fluid passage and a heating thermosensor heated by electricity, and a heat exchanger connected to the flow detection device. a heating device for the heat exchanger, a temperature setting device, a flow rate setting circuit for calculating signals between the temperature setting device and the temperature detection thermosensor, and a connection between the flow rate setting circuit and the flow rate detection device. It is equipped with a flow rate control device that controls the flow rate of the heated body based on a signal.

作　　用 本発明は上記した構成によって、温度検出感温器より一
定温度差で通電加熱される加熱感温器の通電量が流体の
速度に関連して変化することを検出することで流量検出
装置を構成し、温度検出感温器と温度設定器との偏差信
号と加熱能力より被加熱流体流量を演算し、前述の流量
検出装置との偏差信号で流量制御装置を制御し、加熱能
力以上に被加熱流体流量が供給されることを防止するも
のである。Effect of the Invention The present invention has the above-described configuration, and is capable of detecting a flow rate detection device by detecting that the amount of current applied to the heating temperature sensor, which is heated by electricity at a constant temperature difference from the temperature detection temperature sensor, changes in relation to the velocity of the fluid. The flow rate of the fluid to be heated is calculated from the deviation signal between the temperature sensor and the temperature setting device and the heating capacity, and the flow rate control device is controlled by the deviation signal from the above-mentioned flow rate detection device, so that the flow rate exceeds the heating capacity. This prevents the heated fluid flow rate from being supplied.

実施例 以下、本発明の一実施例であるガス瞬間式給湯装置を添
付図面にもとづいて説明する。第１図において、１は流
量制御装置で弁本体２とケーシング３からなり、水は流
入路４から一次弁室５へ入り、流量制御弁６と制御孔７
との間隙を通って二次弁室８に流入し、熱交換器９で加
熱装置１０により加熱されて、出口管１１より外部へ供
給される。流量制御弁６の弁軸６ＩＬはケーシング３と
ネジ結合しており、モータ１２、ギヤボックス１３から
なる駆動装置１４によって流量制御弁６は上下に変位し
て流量を制御し、弾性体６ｂで閉止することも可能であ
る。弁本体２には温度依存性抵抗器からなる温度検出感
温器１５と加熱感温器１６とが流路中にそれぞれ設けら
れており、流量検出装置１７を構成する。加熱感温器１
６は温度検出感温器１５より一定温度上昇するように通
電加熱されており、流路中の流体の速度によって放熱量
が変化することを利用したもので熱式流速計と同一原理
にもとづくものである。出口管１１には出口温度検出器
１８があり熱交換器９で加熱された流体温度を検出する
。燃料は燃料供給路１９より加熱制御器２０で調節され
加熱装置１０で燃焼する。２１は演算制御装置でマイク
ロコンピュータなどで構成され、温度検出感温器１５と
加熱感温器１６ならびに出口温度検出器１８の信号を入
力し、演算した後駆動装置１４と加熱制御器２０へ信号
を出力する。第２図は信号のブロック線図であり、２２
は温度設定器で、加熱装置１０と熱交換器９で加熱され
た流体温度を出口温度検出器１８で検出した信号と比較
された信号は演算制御装置２１内の加熱制御回路２３で
増幅され、加熱制御器２０で加熱装置１０の加熱量を調
節する。温度検出器１５の信号は温度設定器２２の信号
と比較され、演算制御装置１２１内の流量設定回路２４
で加熱装置１０の最大加熱能力との演算によって被加熱
流体の最大流量が設定される。流量設定回路２４の流量
信号は、熱交換器９への流量を流量検出装置１７の信号
を流量に変換する演算制御装置２１内の流量演算回路２
５の信号と比較され、演算制御装置２１内の流量制御回
路２６で増幅され駆動装置１４を介して流量制御弁６で
流量を調節する。Embodiment Hereinafter, a gas instantaneous water heater which is an embodiment of the present invention will be described based on the accompanying drawings. In FIG. 1, reference numeral 1 denotes a flow rate control device consisting of a valve body 2 and a casing 3, in which water enters a primary valve chamber 5 through an inflow path 4, a flow rate control valve 6, and a control hole 7.
It flows into the secondary valve chamber 8 through the gap between the two, is heated by the heating device 10 in the heat exchanger 9, and is supplied to the outside through the outlet pipe 11. The valve shaft 6IL of the flow control valve 6 is screwed to the casing 3, and the flow control valve 6 is moved up and down by a drive device 14 consisting of a motor 12 and a gear box 13 to control the flow rate, and is closed by an elastic body 6b. It is also possible to do so. A temperature detection thermosensor 15 and a heating thermosensor 16 each comprising a temperature-dependent resistor are provided in the flow path of the valve body 2, and constitute a flow rate detection device 17. Heating thermosensor 1
6 is electrically heated by the temperature sensor 15 so that the temperature rises to a certain level, and utilizes the fact that the amount of heat radiation changes depending on the velocity of the fluid in the flow path, and is based on the same principle as a thermal current meter. It is. An outlet temperature detector 18 is provided in the outlet pipe 11 to detect the temperature of the fluid heated by the heat exchanger 9. Fuel is regulated by a heating controller 20 from a fuel supply path 19 and combusted by a heating device 10. Reference numeral 21 denotes an arithmetic and control unit, which is composed of a microcomputer, etc., and inputs signals from the temperature detection thermosensor 15, heating thermosensor 16, and outlet temperature detector 18, and after calculating, sends signals to the drive unit 14 and the heating controller 20. Output. Figure 2 is a block diagram of the signal, 22
is a temperature setting device, and a signal obtained by comparing the temperature of the fluid heated by the heating device 10 and the heat exchanger 9 with a signal detected by the outlet temperature detector 18 is amplified by the heating control circuit 23 in the arithmetic and control device 21, The heating amount of the heating device 10 is adjusted by the heating controller 20 . The signal of the temperature detector 15 is compared with the signal of the temperature setting device 22, and the signal is compared with the signal of the temperature setting device 22.
The maximum flow rate of the fluid to be heated is set by calculation with the maximum heating capacity of the heating device 10. The flow rate signal of the flow rate setting circuit 24 is transmitted to the flow rate calculation circuit 2 in the arithmetic and control device 21 that converts the flow rate to the heat exchanger 9 from the signal of the flow rate detection device 17 into a flow rate.
5, and is amplified by the flow rate control circuit 26 in the arithmetic and control device 21, and the flow rate is adjusted by the flow rate control valve 6 via the drive device 14.

次に動作について説明する。電源が投入され使用者によ
って温度設定が行なわれると、前述のように温度設定器
２１の信号と出口温度検出器１８の信号との比較によっ
て熱交換器９への最大流量が演算される。次に熱交換器
９へ被加熱流体が供給されると、流量検出装置１７で流
量が検出され加熱装置１０へ燃料が供給され熱交換器９
で加熱される。流量演算回路２５の流量信号は流量設定
回路２４と比較され、駆動装置１４で流量制御弁６が変
位し流量を調節する。駆動装置１４のモータ１２は正逆
回転が可能であり、流量制御回路２６の信号によって流
量を増減させる。つまり流量設定回路２４で設定された
流量よりも大なる流量であれば流量制御弁６を閉じる方
向に作動し、小なる流量であれば流量制御弁６を開く。Next, the operation will be explained. When the power is turned on and the temperature is set by the user, the maximum flow rate to the heat exchanger 9 is calculated by comparing the signal from the temperature setting device 21 and the signal from the outlet temperature detector 18, as described above. Next, when the fluid to be heated is supplied to the heat exchanger 9, the flow rate is detected by the flow rate detection device 17, and fuel is supplied to the heating device 10, and the heat exchanger 9
is heated. The flow rate signal from the flow rate calculation circuit 25 is compared with the flow rate setting circuit 24, and the drive device 14 moves the flow rate control valve 6 to adjust the flow rate. The motor 12 of the drive device 14 is capable of forward and reverse rotation, and increases or decreases the flow rate according to a signal from the flow rate control circuit 26. That is, if the flow rate is larger than the flow rate set by the flow rate setting circuit 24, the flow control valve 6 is operated to close, and if the flow rate is smaller, the flow control valve 6 is opened.

このときもし流入路４の水圧が変化しても流量検出装置
１７によって流量変化が検出され、流量制御弁６によっ
て適正に保たれる。一方熱交換器９で加熱された流体の
湯温は熱交換器９の熱容量があってゆるやかに上昇し、
流量は既に適切に保たれているので設定温度と等しくな
り、過大な流量が供給されて設定温度よりも湯温が低下
することがない。At this time, even if the water pressure in the inflow path 4 changes, the flow rate change is detected by the flow rate detection device 17, and the flow rate is maintained at an appropriate level by the flow rate control valve 6. On the other hand, the temperature of the fluid heated by the heat exchanger 9 rises slowly due to the heat capacity of the heat exchanger 9.
Since the flow rate is already maintained at an appropriate level, it becomes equal to the set temperature, and the water temperature will not drop below the set temperature due to an excessive flow rate being supplied.

被加熱流体の流量が流量設定回路２４で設定された流量
よりも小さいときは、出口温度検出器１８によって温度
が検出され、温度設置器２３との比較によって加熱制御
回路２３、加熱制御器２０により加熱装置１０の加熱量
が調節される。When the flow rate of the fluid to be heated is smaller than the flow rate set by the flow rate setting circuit 24, the temperature is detected by the outlet temperature detector 18, and the temperature is detected by the heating control circuit 23 and the heating controller 20 by comparison with the temperature setting device 23. The heating amount of the heating device 10 is adjusted.

本発明の実施例ではガス瞬間式給湯装置について示した
が、被加熱流体として空気を使用した暖房装置や、燃料
として燃体燃料を使用した石油燃焼装置や、加熱装置と
して電気ヒータなどを使用した電気加熱装置にも同様の
作用効果を得ることができる。また加熱装置がバーナの
場合には加熱制御器は燃料制御弁や可変燃料供給器が使
用され、電気加熱装置の場合には電力調節器が使用され
、駆動装置はモータのみならずソレノイドなどの直線駆
動で、きるものでもよい。なお、流量検出装置１７の温
度検出感温器１５と加熱感温器１６を出口管１１上に設
けて出口温度検出器１８を省くことができるが、この場
合には熱交換器９の上流側の流体温度を検出する入口温
度検出器が必要となる。In the embodiments of the present invention, a gas instantaneous water heater is shown, but a heating device that uses air as the heated fluid, an oil combustion device that uses combustible fuel as fuel, an electric heater, etc. as the heating device can also be used. Similar effects can be obtained with electric heating devices. In addition, if the heating device is a burner, a fuel control valve or variable fuel supply device is used as the heating controller, and in the case of an electric heating device, a power regulator is used, and the drive device is not only a motor but also a linear linear device such as a solenoid. It may be something that can be driven. Note that the temperature detection thermosensor 15 and the heating thermosensor 16 of the flow rate detection device 17 can be provided on the outlet pipe 11 and the outlet temperature detector 18 can be omitted; An inlet temperature sensor is required to detect the fluid temperature.

発明の効果 以上のように本発明の流体加熱装置によれば次の効果が
得られる。Effects of the Invention As described above, the fluid heating device of the present invention provides the following effects.

被加熱流体通路にそれぞれ設けられた温度検出感温器と
通電加熱される加熱感温器とで構成された流量検出装置
と、熱交換器と、加熱装置と、温度設定器と、温度設定
器と温度検出感温器との信号を演算する流量設定回路、
流量設定回路と流量検出装置との信号で被加熱流体流量
を制御する流量制御装置を有する構成としたので、流量
検出装置の一部が温度検出器を兼用でき、したがって被
加熱流体の入口温度あるいは出口温度の検出器のどちら
かが不要となり、低価格でかつ小型化が達成される。A flow rate detection device consisting of a temperature detection thermosensor provided in each heated fluid passage and a heating thermosensor heated by electricity, a heat exchanger, a heating device, a temperature setting device, and a temperature setting device. and a flow rate setting circuit that calculates signals from the temperature detection thermosensor,
Since the configuration includes a flow rate control device that controls the flow rate of the heated fluid using signals from the flow rate setting circuit and the flow rate detection device, a part of the flow rate detection device can also be used as a temperature detector, so that the inlet temperature of the heated fluid or Either of the outlet temperature detectors is not required, resulting in low cost and miniaturization.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例を示す流体加熱装置の構成図
、第２図は同装置の制御信号を示すブロック線図である
。 １・・・・・−流量制御装置、９・・・・・・熱交換器
、１０・・・・・・加熱装置、１５・・・・・・温度検
出感温器、１６・・・・・・加熱感温器、１７・・・・
・・流量検出装置、１８・・・・・・出口温度検出器、
２０・・・・・・加熱制御器、２２・・・・・・温度設
定器、２３・・・・・・加熱制御回路、２４・・・・・
・流量設定回路。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名／６
・和処に、温暮FIG. 1 is a configuration diagram of a fluid heating device showing an embodiment of the present invention, and FIG. 2 is a block diagram showing control signals of the device. 1...-Flow rate control device, 9... Heat exchanger, 10... Heating device, 15... Temperature detection thermosensor, 16...・・Heating thermosensor, 17・・・・
...Flow rate detection device, 18...Outlet temperature detector,
20... Heating controller, 22... Temperature setting device, 23... Heating control circuit, 24...
・Flow rate setting circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person/6
・Japanese place, warm life

Claims (4)

【特許請求の範囲】[Claims] （１）被加熱流体通路に設けられた温度検出感温器と通
電加熱される加熱感温器とで構成された流量検出装置と
、この流量検出装置と連絡された熱交換器と、この熱交
換器の加熱装置と、温度設定器と、この温度設定器と前
記温度検出感温器との信号を演算する流量設定回路と、
この流量設定回路と前記流量検出装置との信号によって
被加熱流体を制御する流量制御装置を有する流体加熱装
置。(1) A flow rate detection device consisting of a temperature detection thermosensor installed in the heated fluid passage and a heating thermosensor that is heated by electricity, a heat exchanger connected to this flow detection device, and a heat exchanger connected to the flow rate detection device, a heating device for an exchanger, a temperature setting device, and a flow rate setting circuit that calculates signals between the temperature setting device and the temperature detection thermosensor;
A fluid heating device including a flow rate control device that controls a fluid to be heated based on signals from the flow rate setting circuit and the flow rate detection device. （２）温度検出感温器と加熱感温器はそれぞれ温度依存
性抵抗器で構成された特許請求の範囲第１項記載の流体
加熱装置。(2) The fluid heating device according to claim 1, wherein the temperature detection thermosensor and the heating thermosensor each include a temperature dependent resistor. （３）流量制御装置は、流量設定回路と流量検出装置と
の偏差信号によって可逆的に作動する駆動装置と、この
駆動装置によって作動する流量制御弁からなる特許請求
の範囲第１項記載の流体加熱装置。(3) The flow rate control device comprises a drive device that is reversibly operated by a deviation signal between the flow rate setting circuit and the flow rate detection device, and a flow rate control valve that is operated by this drive device. heating device. （４）被加熱流体通路に設けられた温度検出感温器と通
電加熱される加熱感温器とで構成された流量検出装置と
、この流量検出装置と連絡された熱交換器と、この熱交
換器の加熱装置と、被加熱流体の温度検出器ならびに出
口温度検出器と、この出口温度検出器と前記温度設定器
の信号を演算する加熱制御回路と、この加熱制御回路の
信号により加熱装置の加熱量を制御する加熱制御器と、
前記温度設定器と前記温度検出器の信号を演算する流量
設定回路と、この流量設定回路と前記流量検出装置との
信号により被加熱流体流量を制御する流量制御装置を有
する流体加熱装置。(4) A flow rate detection device consisting of a temperature detection thermosensor installed in the heated fluid passage and a heating thermosensor heated by electricity, a heat exchanger connected to this flow detection device, and a heat exchanger connected to the flow rate detection device, A heating device for the exchanger, a temperature detector for the fluid to be heated, an outlet temperature detector, a heating control circuit that calculates signals from the outlet temperature detector and the temperature setting device, and a heating device according to the signals from the heating control circuit. a heating controller that controls the amount of heating;
A fluid heating device comprising: a flow rate setting circuit that calculates signals from the temperature setting device and the temperature detector; and a flow rate control device that controls the flow rate of the fluid to be heated based on signals from the flow rate setting circuit and the flow rate detection device.
JP60001061A 1985-01-08 1985-01-08 Fluid heating device Pending JPS61161361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60001061A JPS61161361A (en) 1985-01-08 1985-01-08 Fluid heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60001061A JPS61161361A (en) 1985-01-08 1985-01-08 Fluid heating device

Publications (1)

Publication Number Publication Date
JPS61161361A true JPS61161361A (en) 1986-07-22

Family

ID=11491017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60001061A Pending JPS61161361A (en) 1985-01-08 1985-01-08 Fluid heating device

Country Status (1)

Country Link
JP (1) JPS61161361A (en)

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