JPH0328667B2 - - Google Patents

Info

Publication number
JPH0328667B2
JPH0328667B2 JP13254784A JP13254784A JPH0328667B2 JP H0328667 B2 JPH0328667 B2 JP H0328667B2 JP 13254784 A JP13254784 A JP 13254784A JP 13254784 A JP13254784 A JP 13254784A JP H0328667 B2 JPH0328667 B2 JP H0328667B2
Authority
JP
Japan
Prior art keywords
water temperature
hot water
heating element
time
heater
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 - Lifetime
Application number
JP13254784A
Other languages
Japanese (ja)
Other versions
JPS6111558A (en
Inventor
Toshihiro Horiuchi
Makoto Okada
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 JP59132547A priority Critical patent/JPS6111558A/en
Publication of JPS6111558A publication Critical patent/JPS6111558A/en
Publication of JPH0328667B2 publication Critical patent/JPH0328667B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2021Storage heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/10Control of fluid heaters characterised by the purpose of the control
    • F24H15/16Reducing cost using the price of energy, e.g. choosing or switching between different energy sources
    • F24H15/164Reducing cost using the price of energy, e.g. choosing or switching between different energy sources where the price of the electric supply changes with time
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/10Control of fluid heaters characterised by the purpose of the control
    • F24H15/174Supplying heated water with desired temperature or desired range of temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/20Control of fluid heaters characterised by control inputs
    • F24H15/212Temperature of the water
    • F24H15/223Temperature of the water in the water storage tank
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/20Control of fluid heaters characterised by control inputs
    • F24H15/269Time, e.g. hour or date
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/30Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355Control of heat-generating means in heaters
    • F24H15/37Control of heat-generating means in heaters of electric heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/40Control of fluid heaters characterised by the type of controllers
    • F24H15/414Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00Control of fluid heaters
    • F24H15/40Control of fluid heaters characterised by the type of controllers
    • F24H15/486Control of fluid heaters characterised by the type of controllers using timers

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)
  • Computer Hardware Design (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、給湯機として広く家庭に用いられて
いる深夜電力を利用した貯湯式電気温水器に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water storage type electric water heater that utilizes late-night electricity and is widely used in homes as a water heater.

従来例の構成とその問題点 従来の貯湯式電気温水器の動作フローチヤート
図を第1図に示す。図において、まず、深夜電力
が通電を開始されると、それを検知して、湯温設
定手段によつて設定された湯温(Ts℃)、タンク
下部の水湯センサーによつて検知された水温
(Tw℃)をそれぞれ測定し、下記の式を用いて、
発熱体の所要通電時間(Hs)及び、通電開始シ
フト時間(HP)が演算器によつて演算される。
Configuration of conventional example and its problems Figure 1 shows an operational flowchart of a conventional hot water storage type electric water heater. In the figure, first, when the late-night power supply starts, it is detected and the hot water temperature (Ts℃) set by the hot water temperature setting means is detected by the hot water sensor at the bottom of the tank. Measure the water temperature (Tw℃) and use the following formula,
The required energization time (Hs) of the heating element and the energization start shift time (H P ) are calculated by the calculator.

Hs=V(Ts−Tw)/860×P×η HP=H−Hs 但し、V:貯湯タンク容量() P:発熱体の定格消費電力(Kw) η:発熱体の加熱効率 H:深夜電力の契約使用時間 そして一方、夜間タイマー(HN)のカウント
を、タイマー装置により開始し、夜間タイマー
(HN)と、通電開始シフト時間(HP)を遂時、
比較し、HN≧HPとなつた時に、発熱体への通電
を開始する、という構成である。
Hs = V (Ts - Tw) / 860 x P x η H P = H - Hs However, V: Capacity of hot water storage tank () P: Rated power consumption of heating element (Kw) η: Heating efficiency of heating element H: Late at night On the other hand, the timer device starts counting the night timer (H N ), and when the night timer (H N ) and the energization start shift time (H P ) are finally reached,
By comparison, the configuration is such that when H N ≧ H P , energization to the heating element is started.

しかし、このような発熱体の通電開始のシフト
動作を行なう従来の貯湯式電気温水器では、水湯
センサーによつて検出された水温(Tw℃)が高
く、設定湯温(Ts℃)に近い場合には、算出さ
れる所要通電時間(Hs)が小さな値となる。一
方、シフト動作に関わつて発生する誤差として
は、検知水温の(Tw℃)、演算器の分解能、
タイマー装置のカウント時間(HN)、深夜電
力の契約使用時間(H)などがあり、従つて、こ
れらの誤差を積算すると、所要通電時間(Hs)
が小さな場合には、発熱体な運転時間が充分に得
られない可能性があつた。例えば、H=8時間、
V=370、P=4.4kw、η=0.9、Ts=85℃の条
件で、Twが75℃と高い場合の計算をすると、所
要通電時間(Hs)=1.1時間、通電開始シフト時
間(HP)=6.9時間となる。ところが、上記誤差
のうち、タイマー装置のカウント時間(HN
が、+8%の深夜電力の契約時間(H)が、−7
%のバラツキがそれぞれあつた場合には、実際の
通電開始シフト時間(HP)は、 6.9×1.08=7.45 (時間) 一方、深夜電力契約時間(H)は 8×0.93=7.44 (時間) となり、全く発熱体が通電しない、という問題が
発生する。
However, in conventional hot water storage type electric water heaters that perform a shift operation to start energizing the heating element, the water temperature detected by the hot water sensor (Tw℃) is high and close to the set hot water temperature (Ts℃). In this case, the calculated required energization time (Hs) will be a small value. On the other hand, errors that occur related to shift operations include the detected water temperature (Tw℃), the resolution of the computing unit,
There are the count time of the timer device (H N ), the contract usage time of late-night electricity (H), etc. Therefore, by integrating these errors, the required energization time (Hs) is calculated.
If the heating element was small, there was a possibility that the heating element could not be operated for a sufficient amount of time. For example, H=8 hours,
Under the conditions of V = 370, P = 4.4kw, η = 0.9, Ts = 85°C, when Tw is as high as 75°C, the required energization time (Hs) = 1.1 hours, the energization start shift time (H P ) = 6.9 hours. However, among the above errors, the count time (H N ) of the timer device
However, the contract time (H) for late-night electricity is +8%, -7
If there are variations in %, the actual power start shift time (H P ) will be 6.9 x 1.08 = 7.45 (hours), while the night power contract time (H) will be 8 x 0.93 = 7.44 (hours). , a problem arises in that the heating element is not energized at all.

発明の目的 本発明は、上記従来の問題点を解消するもの
で、演算によつて求めた発熱体の所要通電時間が
極端に短かくならないようにし、機器のバラツキ
があつても、確実に希望の湯温が得られるように
するものである。
Purpose of the Invention The present invention solves the above-mentioned conventional problems by preventing the required energization time of the heating element determined by calculation from becoming extremely short, and ensuring the desired energization time even if there are variations in equipment. The temperature of the water is to be obtained.

発明の構成 上記目的を達成するための基本的な構成は、湯
温または湯量設定手段による設定値と、貯湯タン
ク下部に設けた水温センサーにより検出した水温
とから、発熱体の所要通電時間を算出する演算器
と、深夜電力通電終了時刻に、前記演算器で求め
た所要通電時間が経過するように、前記発熱体へ
の通電を開始するためのタイマー装置とを備え、
前記水温センサーにより検出した水温と予め設定
された水温上限値を比較する比較器を設け、低い
方を用いて所要通電時間の演算を行なうようにし
たものである。
Structure of the Invention The basic structure for achieving the above object is to calculate the required energization time of the heating element from the set value by the hot water temperature or hot water amount setting means and the water temperature detected by the water temperature sensor installed at the bottom of the hot water storage tank. and a timer device for starting energization of the heating element so that the required energization time determined by the arithmetic unit elapses at the midnight power energization end time,
A comparator is provided to compare the water temperature detected by the water temperature sensor with a preset water temperature upper limit value, and the lower one is used to calculate the required energization time.

実施例の説明 以下、本発明の1実施例について、図面に基づ
いて説明する。
DESCRIPTION OF EMBODIMENTS Hereinafter, one embodiment of the present invention will be described based on the drawings.

第2図は、本発明の貯湯式温水器の縦断面図で
あり、1は貯湯タンク、2は貯湯タンク1の下部
に設けられた発熱体であるところのヒータ、3は
同じく貯湯タンク1の下部に設けられた水温セン
サーである。
FIG. 2 is a longitudinal cross-sectional view of the hot water storage type water heater of the present invention, where 1 is a hot water storage tank, 2 is a heater which is a heating element provided at the bottom of the hot water storage tank 1, and 3 is a hot water storage tank 1. It is a water temperature sensor installed at the bottom.

第3図は、本貯湯式温水器の制御ブロツク図
で、4は水温センサー3による信号を検知する水
温検知回路、5は湯温設定手段であるところの温
調ボリユームで、55℃から85℃までの間で任意可
変とした。6は温調ボリユーム5の信号を検知す
る設定湯温検知回路、7は深夜電力の通電・停止
を検出する深夜電力検知回路である。これら信号
は、演算器8b、タイマー装置8a、及び比較器
8cの機能をもつたマイコン8に入力されヒータ
駆動回路9に出力される。
Fig. 3 is a control block diagram of this hot water storage type water heater, where 4 is a water temperature detection circuit that detects the signal from the water temperature sensor 3, and 5 is a temperature control volume which is the hot water temperature setting means, from 55°C to 85°C. It was made arbitrarily variable between. 6 is a set hot water temperature detection circuit that detects the signal from the temperature control volume 5, and 7 is a late-night power detection circuit that detects whether or not the late-night power is on or off. These signals are input to a microcomputer 8 having the functions of an arithmetic unit 8b, a timer device 8a, and a comparator 8c, and output to a heater drive circuit 9.

第4図は、本貯湯式温水器の動作フローチヤー
ト図である。
FIG. 4 is an operational flowchart of the present hot water storage type water heater.

次に、本実施例の動作について説明する。 Next, the operation of this embodiment will be explained.

まず、深夜電力の通電が開始されると、これを
深夜電力検知回路7が検知して、マイコン8に送
られ、タイマー装置8a内で夜間タイマー(HN
のカウントが開始られる。そして、一方水温セン
サー3で検知した水温(Tw)は、水温検知回路
4を介して、また、温調ボリユーム5で検知した
設定湯温(Ts)は、設定湯温検知回路6を介し
て共にマイコン8に取り込まれ、その後、演算器
8bにて、所要通電時間(Hs)、通電開始シフト
時間(HP)が演算される。但しここで水温セン
サー3で検知した水温(TW℃)は一旦、比較器
8cに取り込まれ、ここで予め設定された水温上
限値(本例では35℃とする)と比較され、もし水
温(TW℃)が35℃以上の高温ならば、TWを35℃
と置き換えて演算器8bに送るようにする。
First, when the late-night power supply starts, the late-night power detection circuit 7 detects this, sends it to the microcomputer 8, and sets the night timer (H N ) in the timer device 8a.
counting begins. On the other hand, the water temperature (Tw) detected by the water temperature sensor 3 is transmitted to the water temperature detection circuit 4, and the set water temperature (Ts) detected by the temperature control volume 5 is transmitted to the set water temperature detection circuit 6. The data is taken into the microcomputer 8, and then the required energization time (Hs) and the energization start shift time (H P ) are calculated by the arithmetic unit 8b. However, the water temperature (T W °C) detected by the water temperature sensor 3 is once taken into the comparator 8c, where it is compared with the preset upper limit of water temperature (35 °C in this example). If T W °C) is a high temperature of 35 °C or higher, set T W to 35 °C.
and send it to the arithmetic unit 8b.

こうして得られた(HP)と夜間タイマー
(HN)とが比較されて、HN≧HPの条件が成り立
てば、マイコン8からヒータ駆動回路9に信号が
出力され、ヒータ通電が開始される。
(H P ) obtained in this way is compared with the night timer (H N ), and if the condition of H N ≧ H P is satisfied, a signal is output from the microcomputer 8 to the heater drive circuit 9, and heater energization is started. Ru.

一方、HN≧HPの条件が成り立たなければ、再
びスタート点に戻つて、深夜電力の判定から繰り
返し行なわれ、夜間タイマー(HN)のカウント
が進むと共に、通電開始シフト時間(HP)も遂
時更新される。また、一旦、ヒータ通電が開始さ
れれば、以降、HNとHPの比較は行なわずに、ヒ
ータ通電状態を維持する。さらに、深夜電力通電
中でない場合は、夜間タイマー(HN)をカウン
トするかわりに、0クリアを行ない、次回の深夜
電力通電開始に備える。
On the other hand, if the condition H N ≧ H P does not hold, the process returns to the starting point and repeats the judgment of the late-night power, and as the night timer (H N ) continues to count, the energization start shift time (H P ) is determined. will also be updated from time to time. Moreover, once heater energization is started, the heater energization state is maintained without comparing H N and H P from then on. Further, if the late-night power is not being applied, instead of counting the night timer (H N ), the timer is cleared to 0 in preparation for starting the next late-night power supply.

一般に、第4図における動作フローチヤートが
一循する速度は、マイコン8の動作速度による
が、本実施例では、NECのμPD7506Cを使用し、
一循が約100ms以下で終了するようにした。
Generally, the speed at which the operation flowchart shown in FIG.
I made it so that one cycle ends in about 100ms or less.

第5図に、本実施例の水温(Tw)と通電開始
シフト時間(HP)の特性を、設定湯温(Ts)が
85℃と55℃の2点について示した。図からわかる
ように、Ts=85℃の時には、HPは約2.5時間が最
大、またTs=55℃の時には、HPは約5.8時間が最
大となり。従つて、ヒータの通電時間は、少なく
とも2.2時間は確保され、機器のバラツキ誤差が
たとえ1時間発生したとしても、1.2時間の通電
時間は確保できる。また、従来の放熱ロスを押え
るための機能も同時に継承できるものである。
Figure 5 shows the characteristics of water temperature (Tw) and energization start shift time (H P ) in this example, and the set water temperature (Ts).
Two points, 85°C and 55°C, are shown. As can be seen from the figure, when Ts = 85°C, H P reaches a maximum of about 2.5 hours, and when Ts = 55°C, H P reaches a maximum of about 5.8 hours. Therefore, the energization time of the heater is ensured for at least 2.2 hours, and even if an error due to device variation occurs for 1 hour, the energization time of 1.2 hours can be ensured. In addition, the conventional function for suppressing heat radiation loss can be inherited at the same time.

発明の効果 以上のように本発明によれば、次の効果を得る
ことができる。
Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) 放熱ロスの低減がはかれる。(1) Heat radiation loss can be reduced.

(2) 深夜電力通電時間や、機器のバラツキに対し
ても、安定した発熱体の通電動作が確保でき
る。
(2) Stable power-on operation of the heating element can be ensured even in the case of late-night power-on times or variations in equipment.

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

第1図は、従来の貯湯式電気温水器の動作フロ
ーチヤート図、第2図は本発明の1実施例に掛る
貯湯式電気温水器の縦断面図、第3図は同制御ブ
ロツク図、第4図は同動作フローチヤート図、第
5図は同演算特性グラフである。 1……貯湯タンク、2……ヒータ(発熱体)、
3……水温センサー、5……温調ボリユーム(湯
温設定手段)、8a……タイマー装置、8b……
演算器。
FIG. 1 is an operation flowchart of a conventional hot water storage type electric water heater, FIG. 2 is a vertical sectional view of a hot water storage type electric water heater according to an embodiment of the present invention, and FIG. 3 is a control block diagram of the same. FIG. 4 is a flowchart of the same operation, and FIG. 5 is a graph of the calculation characteristics. 1... Hot water storage tank, 2... Heater (heating element),
3...Water temperature sensor, 5...Temperature control volume (hot water temperature setting means), 8a...Timer device, 8b...
Arithmetic unit.

Claims (1)

【特許請求の範囲】[Claims] 1 湯温または温量設定手段による設定値と貯湯
タンク下部に設けた水温センサーにより検出した
水温とから発熱体の所要通電時間を算出する演算
器と、深夜電力通電終了時刻に前記演算器で求め
た所要通電時間が経過するよう前記発熱体への通
電を開始するためのタイマー装置とを備え、前記
水温センサーにより検出した水温と予め設定され
た水温上限値とを比較する比較器を設け、低い方
の値を用いて所要通電時間の演算を行なうように
した貯湯式電気温水器。
1. A calculator that calculates the required energization time of the heating element from the water temperature or the set value by the temperature setting means and the water temperature detected by the water temperature sensor installed at the bottom of the hot water tank; a timer device for starting energization of the heating element so that the required energization time elapses, and a comparator for comparing the water temperature detected by the water temperature sensor with a preset upper limit value of water temperature; This is a hot water storage type electric water heater that uses both values to calculate the required energization time.
JP59132547A 1984-06-27 1984-06-27 Hot-water reserving type electric water heater Granted JPS6111558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59132547A JPS6111558A (en) 1984-06-27 1984-06-27 Hot-water reserving type electric water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59132547A JPS6111558A (en) 1984-06-27 1984-06-27 Hot-water reserving type electric water heater

Publications (2)

Publication Number Publication Date
JPS6111558A JPS6111558A (en) 1986-01-18
JPH0328667B2 true JPH0328667B2 (en) 1991-04-19

Family

ID=15083833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59132547A Granted JPS6111558A (en) 1984-06-27 1984-06-27 Hot-water reserving type electric water heater

Country Status (1)

Country Link
JP (1) JPS6111558A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6378849U (en) * 1986-11-08 1988-05-25
CN103206777A (en) * 2012-01-17 2013-07-17 文志军 Electronic constant-temperature pre-instant dual-mode electric water heater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130948A (en) * 1982-01-29 1983-08-04 Mitsubishi Electric Corp Control device for hot-water reserving type electric water heater
JPS58130942A (en) * 1982-01-29 1983-08-04 Mitsubishi Electric Corp Control device for hot-water reserving type electric water heater

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130948A (en) * 1982-01-29 1983-08-04 Mitsubishi Electric Corp Control device for hot-water reserving type electric water heater
JPS58130942A (en) * 1982-01-29 1983-08-04 Mitsubishi Electric Corp Control device for hot-water reserving type electric water heater

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JPS6111558A (en) 1986-01-18

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