GB1501080A - Thermal storage heaters - Google Patents

Thermal storage heaters

Info

Publication number
GB1501080A
GB1501080A GB56495/73A GB5649573A GB1501080A GB 1501080 A GB1501080 A GB 1501080A GB 56495/73 A GB56495/73 A GB 56495/73A GB 5649573 A GB5649573 A GB 5649573A GB 1501080 A GB1501080 A GB 1501080A
Authority
GB
United Kingdom
Prior art keywords
thermistor
circuit
parallel
capacitor
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
Application number
GB56495/73A
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.)
Hotpoint Ltd
Original Assignee
Hotpoint 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 Hotpoint Ltd filed Critical Hotpoint Ltd
Priority to GB56495/73A priority Critical patent/GB1501080A/en
Publication of GB1501080A publication Critical patent/GB1501080A/en
Expired legal-status Critical Current

Links

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
    • F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
    • F24H9/2071—Arrangement or mounting of control or safety devices for air heaters using electrical energy supply
    • F24H9/2078—Storage 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/204—Temperature of the air 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
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/345—Control of fans, e.g. on-off control
    • F24H15/35—Control of the speed of fans
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
    • G05D23/1923—Control of temperature characterised by the use of electric means characterised by the type of controller using thermal energy, the cost of which varies in function of time
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D10/00—District heating systems
    • 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
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/486—Control of fluid heaters characterised by the type of controllers using timers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating

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)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Abstract

1501080 Storage heater control circuit HOTPOINT Ltd 21 Feb 1975 [6 Dec 1973] 56495/73 Heading H2H [Also in Division G3] A fan storage heater incorporates a control circuit for operating the fan motor 14 to maintain a flow of air through the heater in dependence upon the temperature sensed by a temperature sensing device 17, which circuit also includes switch means SW operable to modify the operation of the fan for maintaining an airflow, when the heater is working from an offpeak supply, which is lower than that produced during peak-period operation at the same sensed temperature. As shown, a shaded pole A.C. motor 14 is connected in series with the A.C. terminals of diode bridge 21 across an A.C. supply. The circuit is completed via thyristor TH which is turned on at a point in the input ¢-cycles by the output from transistor pair TR1, TR2 which compares the voltage on capacitor C1 with that at the junction of negative coefficient thermistor 17 and resistor R2. In operation capacitor charges via R1, R4 and D1 and subsequently more slowly via R1 and R3, the rate of charging being set by temperature control potentiometer BV1. The firing point within the ¢-cycle of thyristor TH being set by both the rate of charge of capacitor C1 and the resistance value of thermistor 17. To achieve the required modified operation a normally open switch SW in series with a fixed resistor R8 and a potentiometer RV2 is connected in parallel with the thermistor so that closure of the switch connects resistances R8 and RV2 in parallel with the thermistor to effectively reduce its value. This parallel circuit may alternatively be connected across setting resistor RV1.
GB56495/73A 1973-12-06 1973-12-06 Thermal storage heaters Expired GB1501080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB56495/73A GB1501080A (en) 1973-12-06 1973-12-06 Thermal storage heaters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB56495/73A GB1501080A (en) 1973-12-06 1973-12-06 Thermal storage heaters

Publications (1)

Publication Number Publication Date
GB1501080A true GB1501080A (en) 1978-02-15

Family

ID=10476760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB56495/73A Expired GB1501080A (en) 1973-12-06 1973-12-06 Thermal storage heaters

Country Status (1)

Country Link
GB (1) GB1501080A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236877A (en) * 1989-08-03 1991-04-17 I O Innovation Design Consulta Fan-controlled PTC heating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236877A (en) * 1989-08-03 1991-04-17 I O Innovation Design Consulta Fan-controlled PTC heating apparatus

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee