EP0038304B1 - Verfahren zum Regeln eines Heizungsgeräts und durch dieses Verfahren geregeltes Heizungsgerät - Google Patents

Verfahren zum Regeln eines Heizungsgeräts und durch dieses Verfahren geregeltes Heizungsgerät Download PDF

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Publication number
EP0038304B1
EP0038304B1 EP81810141A EP81810141A EP0038304B1 EP 0038304 B1 EP0038304 B1 EP 0038304B1 EP 81810141 A EP81810141 A EP 81810141A EP 81810141 A EP81810141 A EP 81810141A EP 0038304 B1 EP0038304 B1 EP 0038304B1
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EP
European Patent Office
Prior art keywords
block
air
temperature
fan
water
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
EP81810141A
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English (en)
French (fr)
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EP0038304A1 (de
Inventor
Yves Trouilhet
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.)
L'INDUSTRIELLE D'EQUIPEMENT
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L'INDUSTRIELLE D'EQUIPEMENT
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Application filed by L'INDUSTRIELLE D'EQUIPEMENT filed Critical L'INDUSTRIELLE D'EQUIPEMENT
Priority to AT81810141T priority Critical patent/ATE8434T1/de
Publication of EP0038304A1 publication Critical patent/EP0038304A1/de
Application granted granted Critical
Publication of EP0038304B1 publication Critical patent/EP0038304B1/de
Expired legal-status Critical Current

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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
    • F24H15/258—Outdoor temperature
    • 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
    • F24H15/335—Control of pumps, e.g. on-off control
    • 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
    • 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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F24H7/0408—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply
    • F24H7/0416—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer fluid being air
    • 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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F24H7/0408—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply
    • F24H7/0433—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer medium being water

Definitions

  • the invention relates to a method for regulating a heating device comprising a thermal storage block, electrical resistors for heating this block, a closed air circulation circuit, a fan and a heat exchanger, as well as 'to a heating device incorporating means for implementing this method.
  • the heat storage heaters used to heat a central heating water circuit include means for adjusting the air flow rate through the accumulation block as a function of the desired temperature for the water. Since the temperature of the block which is heated by the electric current at night decreases during the day and the temperature of the water is a function of the outside temperature, the air flow can vary in significant proportions. In addition, the temperature of the storage block must be sufficient to provide the necessary power.
  • the existing solutions provide a probe in the block, the heating resistors of the block being energized as soon as the temperature of the block drops below a certain threshold.
  • this threshold must be set at a value sufficient to allow the nominal power for which the boiler was calculated to be supplied.
  • This power must therefore be capable of normally heating the water to 90 ° C, the temperature for which the radiators have been dimensioned taking into account maximum heat loss from the premises to be heated.
  • the available energy is still amply sufficient taking into account the power required. Consequently, the electrical supply to the block heating resistors is switched on at the daytime tariff while the energy reserve of the block is still sufficient to wait for switching on at the nightly tariff.
  • the object of the present invention is to remedy at least partially the above-mentioned drawbacks.
  • the present invention firstly relates to a method of regulating a heating device comprising a thermal storage block, electrical resistors for heating this block, a closed air circulation circuit comprising channels convection through this block, connecting an air distribution channel and an air collecting channel, these two channels communicating with the outlet, respectively, the inlet of a fan on which the circuit closes, a heat exchanger air-water heat placed between the outlet of said collecting channel and the inlet of the ventilator and means for varying the proportion of the constant air flow of the ventilator sent through said block.
  • This process is characterized by the fact that a desired temperature for the water leaving said exchanger is determined as a function of the temperature of the outside air, and that said proportion of the air flow rate sent through the block is varied.
  • the invention also relates to a heating device of the type defined above, regulated by this method characterized in that it comprises a bypass passage which connects the outlet of said fan to the outlet of said air collecting channel a fan air flow distribution member being mounted oscillating between a limit position for closing the inlet of said distribution channel and a limit position for closing said bypass passage, the latter position determining the energizing of the electrical resistances during during daytime hours, a drive member being connected to this distribution member to move it between its two limit positions, this drive member being controlled by a regulator associated with a first probe for measuring the temperature of the water at the output of said exchanger, and to a second probe for measuring the temperature of the outside ambient air and that this regulator is arranged to determine said temperature d water as a function of the outside air temperature.
  • the method according to the invention makes it possible to provide an adjustable power from a constant flow rate of the fan and according to the desired temperature for the water.
  • this method has the advantage of controlling the daytime engagement of the heating resistors of the accumulation block as a function of the power drawn off and not as a function of the temperature of the block. Thanks to this feature, the usable energy capacity of the unit is increased, especially in mid-season when the power required decreases due to the increase in the outdoor ambient temperature. This therefore leads to a more rational use of the stored energy, advantageous both for the user and for the electric current distributor.
  • the single figure of the appended drawing illustrates, by way of example, an embodiment of a regulation scheme for the heating device which is the subject of the present invention.
  • FIG. 1 very schematically represents the essential elements of a storage heater comprising an insulating casing 1 enclosing a storage block 2 in which are distributed electrical heating resistors 3 supplied by a common distribution rail 4. Channels of air circulation (not shown) pass through this block to connect a distribution channel 5 and a collecting channel 6. These channels communicate respectively with the outlet and the inlet of a fan 7, inlet in front of which is a heat exchanger 8 of a central heating circuit 9.
  • a bypass passage 10 is provided under the accumulation block 2 and a distribution flap 11 is mounted oscillating around an axis 12 between a position for closing the bypass passage 10 and a position for closing the distribution channel 5.
  • a synchronous servo motor 13 connected to a regulating member 14 controls the angular position of the distribution flap 11.
  • This gold control gane 14 is connected, in this example, to a probe 15 placed in the central heating circuit 9 upstream of the radiators and to a probe 16 placed either outside or inside the room to be heated to measure the room temperature and determine the water temperature.
  • the electrical supply circuit comprises a part supplying the electrical resistors 3 and controlled by a clock 17 connected to a day / night switch 23.
  • a switch 18 is arranged in the “day” portion of the supply circuit and is connected to the shutter distribution 11 so that it closes this switch in the closed position of the bypass passage 10, so as to switch on the electrical heating resistors 3.
  • a safety switch 19 is still placed in the part of this supply circuit resistors 3, common to the day / night portions of this circuit. This switch 19 is connected to a probe 20 for measuring the temperature of the block, to prevent this temperature from exceeding a certain limit.
  • Another part of the supply circuit is connected to the fan 7 and to a circulator 21 via the regulating member 14.
  • a safety switch 22 is disposed in this part of the supply circuit and is connected to the probe 15 to cut the fan 7 in the event that the water temperature becomes abnormally high, for example in the event of blockage of the distribution flap 11.
  • a switch 24, placed in the supply circuit of the fan 7, is open when the distribution flap 11 closes the distribution channel 5.
  • the accumulation block 2 is heated to its maximum temperature, ie 650 ° C.
  • the regulator 14 displays the water temperature of the central heating circuit as a function of the outside temperature measured by the probe 16 and it compares the water temperature measured by the probe 15 with the displayed temperature.
  • the regulating member 14 actuates the servomotor 13 in one direction or the other depending on whether the measured temperature of the water is too high or not, decreasing, respectively increasing the cross section between the outlet of the fan 7 and the distribution channel 5, increasing respectively decreasing the inlet section of the bypass passage 10.
  • This regulation process makes it possible to constantly adapt the power drawn from the accumulation block 2 to the desired temperature of the water in the heating circuit, by modifying the mass flow of air through this block 2.
  • the power drawn is just sufficient to heat the water so that following the gradual cooling of the accumulation block 2, the power will quickly become insufficient.
  • the distribution flap 11 closes the switch 18, ensuring the daytime supply of the electrical resistances 3 of the accumulation block 2, just that its temperature is sufficient to produce a displacement of the distribution flap 11 in reverse.
  • the control of the daytime restart of the heating of the block according to the drawn off power makes it possible to save in daytime current. Indeed if we consider that the block is heated to 650 ° C overnight in this example, it has a nominal power of 18 KW calculated to heat the water of the central heating circuit to 90 ° C. The minimum temperature at which the block can supply this power is 250 ° C. If the daytime restart of the block heater was controlled by the temperature of this block, it would therefore be necessary to trigger this restart each time the block reaches this temperature.
  • the energy contained in the block at 250 ° C is still largely sufficient and it has been calculated that the block can provide the desired power until its temperature drops to 150 ° C.
  • the regulation system described therefore makes it possible to take maximum advantage of a given storage volume and leads to faster amortization of the cost of the accumulation block.
  • the calculation of the volume of this block can also be optimized due to the increased average storage capacity taking into account this regulation system.
  • the passage section controlled by the distribution flap is substantially constant, the increase in the section of one of the openings automatically coinciding with a corresponding decrease of the passage section of the other opening allowing precise adjustment of the respective flow rates, the total pressure drop remaining constant through the two openings for the passage of air leaving the fan.
  • the fan which operates at a constant speed is also subjected to a substantially constant load.

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  • 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)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • General Induction Heating (AREA)
  • Control Of Heat Treatment Processes (AREA)

Claims (3)

1. Verfahren zum Regeln eines Heizungsgeräts mit einem thermischen Speicherblock (2), mit elektrischen Widerständen (3) zum Erwärmen dieses Blocks, mit einem geschlossenen Luftzirkulations-Kreislauf mit Konvektionskanälen quer durch diesen Block, die einen Luftverteilerkanal (5) und einen Luftsammelkanal (6) verbinden, wobei diese beiden Kanäle mit dem Ausgang bzw. Eingang eines Ventilators (7) in Verbindung stehen, auf dem der Kreislauf sich schliesst, mit einem Luft/Wasser-Wärmetauscher (8), der zwischen dem Ausgang des Sammelkanals und dem Eingang des Ventilators angeordnet ist, und mit Mitteln (11 bis 13), um das konstante ' Durchflussmengen-Verhältnis an aus dem Ventilator durch diesen Block hindurch geschickter Luft zu verändern, dadurch gekennzeichnet, dass man eine gewünschte Temperatur für das aus dem Tauscher kommende Wasser in Abhängigkeit von der Aussenlufttemperatur bestimmt, dass man das Durchflussmengen-Verhältnis an in Abhängigkeit von dieser gewünschten Temperatur durch den Speicherblock geschickter Luft verändert, dass man die elektrischen Heizwiderstände des Blocks einschaltet, sobald die durch den Block geschickte Durchflussmenge an Luft, die erforderlich ist, um diese gewünschte Temperatur des Wasser zu erhalten, der Durchflussmenge an Luft des Ventilators entspricht, und dass man die elektrischen Widerstände abschaltet, sobald nur ein Teil der Durchflussmenge an Luft des Ventilators durch den Block geschickt wird.
2. Heizvorrichtung wie im Oberbegriff des Anspruchs 1 angegeben und geregelt entsprechend dem Verfahren nach dem kennzeichnenden Teil des Anspruchs 1, dadurch gekennzeichnet, dass sie einen Abzweigungsdurchgang (10) aufweist, der den Ausgang des Ventilators (7) mit dem Ausgang des Luftsammelkanals (6) verbindet, wobei ein Aufteilorgan (11) für die Luft-Durchflussmenge des Ventilators schwingend zwischen einer Grenzschliessstellung des Eingangs des Verteilerkanals und einer Grenzschliessstellung des Abzweigungsdurchgangs angeordnet ist, dass diese letztere Stellung das Unter-Spannung-Setzen der elektrischen Widerstände während der Tagesstunden bestimmt, dass ein Antriebsorgan (13) mit diesem Aufteilorgan verbunden ist, um es zwischen seinen beiden Grenzstellungen zu verschieben, wobei dieses Antriebsorgan von einem Regler (14) gesteuert wird, der an eine erste Messsonde (15) für die Wassertemperatur am Ausgang des Tauschers und an einer zweiten Messsonde (16) für die Temperatur der äusseren Umgebungsluft angeschlossen ist, und dass dieser Regler betätigt wird, um die gewünschte Temperatur des Wassers in Abhängigkeit von der Temperatur der Aussenluft zu bestimmen.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Schliessstellung des Eingangs des Verteilerkanals den Stillstand des Ventilators bestimmt.
EP81810141A 1980-04-15 1981-04-14 Verfahren zum Regeln eines Heizungsgeräts und durch dieses Verfahren geregeltes Heizungsgerät Expired EP0038304B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81810141T ATE8434T1 (de) 1980-04-15 1981-04-14 Verfahren zum regeln eines heizungsgeraets und durch dieses verfahren geregeltes heizungsgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2886/80 1980-04-15
CH288680A CH635667A5 (fr) 1980-04-15 1980-04-15 Procede de regulation d'un appareil de chauffage et dispositif de regulation pour la mise en oeuvre du procede.

Publications (2)

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EP0038304A1 EP0038304A1 (de) 1981-10-21
EP0038304B1 true EP0038304B1 (de) 1984-07-11

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Family Applications (1)

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EP81810141A Expired EP0038304B1 (de) 1980-04-15 1981-04-14 Verfahren zum Regeln eines Heizungsgeräts und durch dieses Verfahren geregeltes Heizungsgerät

Country Status (5)

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EP (1) EP0038304B1 (de)
AT (1) ATE8434T1 (de)
CH (1) CH635667A5 (de)
DE (1) DE3164677D1 (de)
WO (1) WO1981003060A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0171028A3 (de) * 1984-08-07 1987-09-09 Heinz Proske Heizungsanlage
GB2586625B (en) * 2019-08-29 2021-08-25 Tepeo Ltd A storage boiler

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1579781A1 (de) * 1965-07-28 1970-09-10 Roesen Wilhelm Unterbau fuer Elektro-Waerme-Blockspeicher
BE826231A (fr) * 1975-03-04 1975-09-04 Acec Poele electrique avec un dispositif de reglage d'accumulation et/ou de restitution de la chaleur

Also Published As

Publication number Publication date
WO1981003060A1 (en) 1981-10-29
ATE8434T1 (de) 1984-07-15
DE3164677D1 (en) 1984-08-16
EP0038304A1 (de) 1981-10-21
CH635667A5 (fr) 1983-04-15

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