JPS6082741A - Water heating device - Google Patents
Water heating deviceInfo
- Publication number
- JPS6082741A JPS6082741A JP58191129A JP19112983A JPS6082741A JP S6082741 A JPS6082741 A JP S6082741A JP 58191129 A JP58191129 A JP 58191129A JP 19112983 A JP19112983 A JP 19112983A JP S6082741 A JPS6082741 A JP S6082741A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- detection resistor
- ceramic
- heat generating
- flow rate
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 40
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
- F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/215—Temperature of the water before heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/238—Flow rate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
- F24H15/37—Control of heat-generating means in heaters of electric heaters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はセラミック発熱素子を用いた瞬間式の温水加熱
装置の流量検出手段に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flow rate detection means for an instantaneous hot water heating device using a ceramic heating element.
従来例の構成とその問題点
従来の電気ヒータを用いた温水加熱装置の流量検出手段
は、圧力応動装置すなわち、水道の供給圧力によりダイ
アフラムを変位させるか、あるいはベンチュリーの差圧
によりダイアフラムを変位２ ベージ゛
させ、マイクロスイッチを動作させる手段を用いていた
。この従来の流量検出手段では圧力応動装置部が大きく
なり、また配管系が複雑になる等の問題があった。Structure of the conventional example and its problems The flow rate detection means of the conventional hot water heating device using an electric heater is a pressure-responsive device, that is, a diaphragm is displaced by the supply pressure of water supply, or a diaphragm is displaced by the differential pressure of a venturi. A method was used to activate the page and operate a microswitch. This conventional flow rate detection means has problems such as a large pressure-responsive device and a complicated piping system.
発明の目的
本発明はかかる従来の問題を解消するもので、流量検出
手段をセラミック発熱素子自体を利用して構成すること
を目的とする。この目的を達成するために本発明はセラ
ミック発熱素子に検知抵抗体を設けるとともに、この検
知抵抗体を熱線式の流速計の原理を用いた流量検知回路
と接続したものである。OBJECTS OF THE INVENTION The present invention aims to solve such conventional problems, and aims to construct a flow rate detection means using the ceramic heating element itself. In order to achieve this object, the present invention provides a ceramic heating element with a detection resistor, and connects this detection resistor to a flow rate detection circuit using the principle of a hot-wire current meter.
この構成により、流量の検出がセラミック発熱素子に設
けた検知抵抗体により行なうことができるため、流量検
出用の七ンサを他に設ける必要が無い。With this configuration, the flow rate can be detected by the detection resistor provided in the ceramic heating element, so there is no need to provide another sensor for flow rate detection.
実施例の説明
以下本発明の一実施例を第１図〜第３図を用いて説明す
る。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
第１図において、発熱抵抗体１および検知抵抗３ ベー
ジ゛
体２をセラミックシート３とセラミック基体４との間で
挟持し、一体に成形してセラミック発熱素子５を構成す
る。In FIG. 1, a heating resistor 1, a sensing resistor 3, and a base body 2 are sandwiched between a ceramic sheet 3 and a ceramic base 4, and are integrally molded to form a ceramic heating element 5.
このセラミック発熱素子５は、流入口６および流出ロア
を有する外筒８に気密に固定され、この外筒８とセラミ
ック発熱素子５により挾丑ｎた空間が熱交換流路９とな
る。熱交換流路９の流入口６は流量調節弁１０を経て水
道配管１１と入水管路１２で接続さ扛る。入水管路１２
の流入口６の近くには入水温度を検知する温度士ンサー
１３を設けている。This ceramic heating element 5 is airtightly fixed to an outer cylinder 8 having an inlet port 6 and an outlet lower part, and a space sandwiched between this outer cylinder 8 and the ceramic heating element 5 becomes a heat exchange flow path 9. The inlet 6 of the heat exchange channel 9 is connected to a water supply pipe 11 via a flow rate control valve 10 and a water inlet pipe 12. Inlet pipe 12
A temperature sensor 13 for detecting the temperature of the incoming water is provided near the inlet 6 of the inlet.
第２図、第３図において検知抵抗体２は流量検知回路１
４と接続さｎ１熱交換流路９を通過する流量を検知する
。この種の流速検知手段においては高い精度で流速を検
知するためには作動流体の温度を知ることが必要で、温
度センサ１３と流量検知回路１４とは接続されている。In FIGS. 2 and 3, the detection resistor 2 is the flow rate detection circuit 1.
4 and detects the flow rate passing through the n1 heat exchange channel 9. In this type of flow rate detection means, it is necessary to know the temperature of the working fluid in order to detect the flow rate with high accuracy, and the temperature sensor 13 and the flow rate detection circuit 14 are connected.
流量検知回路１４より得ら扛る流量信号はヒータ入力制
御回路１５に入り、流量に応じてヒータ入力を、ＯＮ−
〇ＦＦ制御するものである。The flow rate signal obtained from the flow rate detection circuit 14 is input to the heater input control circuit 15, and the heater input is turned on or off according to the flow rate.
〇It is FF controlled.
ここで本実施例による温水加熱装置の動作につき説明す
る。Here, the operation of the hot water heating device according to this embodiment will be explained.
セラミック発熱素子５に設けた検知抵抗体２には流量検
知回路１４より常時微小な電流が流さ扛、発熱抵抗体２
が一定温度となるように制御されている。ここで流量調
節弁１０’！ｆ−開くと水道水が入水管路１２を経て熱
交換流路９に至り、検知抵抗体２（ｉ−冷却するように
作用する。流量検知回路１４は検知抵抗体２の温度が一
定となるよう検知抵抗体２にかかる電圧を制御し、この
電圧値の変化より逆に流量（流速）を知ることができる
。この検知抵抗体２は熱伝導性の良いセラミックの薄い
シートを介して作動流体と接しているため、熱応答性が
良く十分にこの目的のために用いることができる。流量
が設定値以上に達しているという信号が流量検知回路１
４から出力さｎると、ヒータ入力制御回路１５によりヒ
ータ入力がＯＮされる。A small current is constantly passed through the detection resistor 2 provided in the ceramic heating element 5 from the flow rate detection circuit 14.
is controlled to maintain a constant temperature. Here, the flow rate control valve 10'! f - When opened, tap water passes through the water inlet pipe 12 and reaches the heat exchange flow path 9, which acts to cool the detection resistor 2 (i).The flow rate detection circuit 14 keeps the temperature of the detection resistor 2 constant. By controlling the voltage applied to the sensing resistor 2, the flow rate (flow velocity) can be determined from the change in voltage value.The sensing resistor 2 is connected to the working fluid through a thin ceramic sheet with good thermal conductivity. Since it is in contact with the flow rate detection circuit 1, it has good thermal response and can be used for this purpose.
4, the heater input control circuit 15 turns on the heater input.
ここで流量検知回路１４には入水温度を検知する温度セ
ンサ１３の信号が入力されるため、より高い精度の流量
検知が期待できる。Here, since the signal from the temperature sensor 13 that detects the temperature of incoming water is input to the flow rate detection circuit 14, higher accuracy flow rate detection can be expected.
５ページ
一部ヒータ入力がＯＮＥ、た後流量調節弁１（１絞り、
流量が設定値以下に低下した場合には、流量検知回路１
４の信号によりヒータ制御回路１５が作動し、ヒータ入
力がＯＦＦさ扛る。ここで検知抵抗体２は発熱抵抗体１
よりも上流側に設置さ扛ているため、発熱抵抗体１の発
熱による影響を受けることが少なく、安定した流量検出
を行なうことができる。After some heater input is ONE on page 5, flow control valve 1 (1 throttle,
If the flow rate drops below the set value, the flow rate detection circuit 1
The heater control circuit 15 is activated by the signal No. 4, and the heater input is turned off. Here, the sensing resistor 2 is the heating resistor 1
Since it is installed on the upstream side, it is less affected by the heat generated by the heat generating resistor 1, and stable flow rate detection can be performed.
発明の効果
以上のように本発明の温水加熱装置によｎば、熱応答性
の良いセラミック発熱素子に、熱線流速計の原理を用い
た流量検知部を一体化したため、瞬間式の温水加熱装置
には必須の流量検知部を簡素化すると、とを可能とした
ものである。Effects of the Invention As described above, according to the hot water heating device of the present invention, a ceramic heating element with good thermal response is integrated with a flow rate detection section using the principle of a hot wire anemometer, so that an instantaneous hot water heating device can be obtained. This has been made possible by simplifying the flow rate detection section, which is essential for this purpose.
第１図は本発明の一実施例である温水加熱装置に用いた
セラミック発熱素子部を示す一部切欠斜視図、第２図は
同装置の流路系構成図、第３図は同電気回路図である。
１・・・・・・発熱抵抗体、２・・・・・・検知抵抗体
、３・・・・・・６ ページ
セラミックシート、４・・・・・・セラミック基体、５
−・・・・・セラミック発熱素子、９・・・・・・熱交
換流路、１４・・・・・・流量検知回路。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図
３
乙
７
．５／４
Ｏ
／２ １５
置＝＝＝＝巳←雷ヨ了工月＼巨＞〒１．／１３５Fig. 1 is a partially cutaway perspective view showing a ceramic heating element used in a hot water heating device that is an embodiment of the present invention, Fig. 2 is a flow path system configuration diagram of the device, and Fig. 3 is the electric circuit of the same. It is a diagram. 1...Heating resistor, 2...Detecting resistor, 3...6 page ceramic sheet, 4...Ceramic base, 5
-...Ceramic heating element, 9...Heat exchange channel, 14...Flow rate detection circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Otsu 7. 5/4 O /2 15 Place====Snake←Raiyo Ryo Kougetsu\Giant>〒1. /135
Claims (1)
ク基体の間に挾持したセラミック発熱素子と、このセラ
ミック発熱素子と作動流体が熱交換を行なう熱交換流路
とを備え、前記検知抵抗体は、前記発熱抵抗体よりも前
記熱交換流路の上流側に設けるとともに、前記検知抵抗
体を流量検知回路と接続した温水加熱装置。The sensing resistor includes a ceramic heating element in which a heating resistor and a sensing resistor are sandwiched between a ceramic sheet and a ceramic base, and a heat exchange channel through which the ceramic heating element and a working fluid exchange heat. A hot water heating device, which is provided upstream of the heat exchange flow path than the heating resistor, and in which the detection resistor is connected to a flow rate detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58191129A JPS6082741A (en) | 1983-10-13 | 1983-10-13 | Water heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58191129A JPS6082741A (en) | 1983-10-13 | 1983-10-13 | Water heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6082741A true JPS6082741A (en) | 1985-05-10 |
Family
ID=16269352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58191129A Pending JPS6082741A (en) | 1983-10-13 | 1983-10-13 | Water heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6082741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63118556A (en) * | 1986-11-06 | 1988-05-23 | Tanika Denki Kk | Construction of heating section for heating liquid to constant temperature |
-
1983
- 1983-10-13 JP JP58191129A patent/JPS6082741A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63118556A (en) * | 1986-11-06 | 1988-05-23 | Tanika Denki Kk | Construction of heating section for heating liquid to constant temperature |
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