EP1701111B1 - Chauffe-eau instantané - Google Patents

Chauffe-eau instantané Download PDF

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Publication number
EP1701111B1
EP1701111B1 EP05090064A EP05090064A EP1701111B1 EP 1701111 B1 EP1701111 B1 EP 1701111B1 EP 05090064 A EP05090064 A EP 05090064A EP 05090064 A EP05090064 A EP 05090064A EP 1701111 B1 EP1701111 B1 EP 1701111B1
Authority
EP
European Patent Office
Prior art keywords
instantaneous flow
flow heater
heater according
time
length
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.)
Not-in-force
Application number
EP05090064A
Other languages
German (de)
English (en)
Other versions
EP1701111A1 (fr
Inventor
Christian Koch
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.)
Gerdes OHG
Original Assignee
Gerdes OHG
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 Gerdes OHG filed Critical Gerdes OHG
Priority to AT05090064T priority Critical patent/ATE469328T1/de
Priority to PL05090064T priority patent/PL1701111T3/pl
Priority to EP05090064A priority patent/EP1701111B1/fr
Priority to DE502005009632T priority patent/DE502005009632D1/de
Publication of EP1701111A1 publication Critical patent/EP1701111A1/fr
Priority to HK07102731.3A priority patent/HK1100967A1/xx
Application granted granted Critical
Publication of EP1701111B1 publication Critical patent/EP1701111B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24H9/2007—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
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/40—Control of fluid heaters characterised by the type of controllers
    • F24H15/407—Control of fluid heaters characterised by the type of controllers using electrical switching, e.g. TRIAC
    • 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
    • F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based

Definitions

  • the invention relates to a water heater according to the preamble of claim 1.
  • the triacs can be switched by means of Optotriacs, which have an integrated voltage zero-crossing detection circuit.
  • the time behavior is much less critical.
  • the problem here is that especially at low levels of heating power of the zero crossing of the Optotriacs can not be reliably detected and therefore the heating element can not be reliably turned on.
  • the object of the present invention is to provide a water heater with a cost-effective heating control, which reliably switches especially at low levels of heating power.
  • the invention solves this problem by the means of claim 1.
  • the second semiconductor switching element without integrated zero-crossing detection circuit is turned on when driven. Due to the low current generated thereby creates a defined potential at the heating element. This makes it possible for the first semiconductor switching element with integrated zero crossing detection to reliably detect the voltage zero crossing and reliably switch the corresponding semiconductor switching element.
  • the invention therefore makes the advantages of a semiconductor switching element used with integrated zero-crossing detection circuit, whereby by deliberate use of a semiconductor switching element without integrated zero-crossing detection circuit, the disadvantages described above are avoided.
  • the application of the invention to digital electronic in particular by means of a microcontroller or a microprocessor controlled water heater.
  • the water heater preferably has a temperature control in steps of at most 2 ° C, preferably 1 ° C and / or a gradation of the heating power in steps of at most 300 W, preferably at most 200 W.
  • the instantaneous water heater 10 comprises a water inlet 12, a water outlet 13, a water pipe 14 connecting the water inlet 12 to the water outlet 13 and, in the present embodiment, four resistance heating elements 11a-11d for heating water flowing through the water pipe 14.
  • Each heating element 11a, 11b, 11c, 11d has a first electrical connection line 15a, 15b, 15c or 15d and a second electrical connection line 16a, 16b, 16c or 16d which are connected to voltage supply lines 17A-17C for supplying the heating elements 11a. 11 d are connected.
  • Each heating element 11a, 11b, 11c, 11d is separable on both sides by means of triacs 18v, 18w, 18x, 18y, 18z from the supply lines 17A-17C.
  • the heating elements 11a-11d and selective connection and disconnection of the heating elements 11a-11d by means of the triacs 18v-18z can achieve a coarse gradation of the heating power of the instantaneous water heater 10 in steps of, for example, 4.5 kW up to a maximum total output of, for example, 27 kW become.
  • the triacs 18v-18z are driven for complete galvanic isolation by means of optically driven semiconductor control elements, here in the form of Optotriacs 19v, 19w, 19x, 19y and 19z, respectively.
  • the optotriacs 19v-19z are controlled by means of a programmable control device 30, in particular a suitable microcontroller or processor.
  • the connection of the Optotriacs 19v - 19z with the microcontroller 30 is shown purely schematically, other useful components can be provided.
  • the control device 30 is suitably programmed in order to achieve control of the water temperature to 1 ° C precisely or in power steps of 150 W by phase-controlled activation of the Optotriacs 19v-19z or the triacs 18v-18z.
  • the optotriacs 19v, 19w, and 19x each have an integrated zero-crossing detection circuit 20v, 20w, and 20x, respectively.
  • the optotriacs 19y and 19z each have no integrated zero-crossing detection circuit. In this way, it is ensured that each heating element 11 a, 11 b, 11 c, 11 d is connected to the supply lines 17A-17C on one terminal side with an optotriac with integrated zero-crossing detection circuit and on the other terminal side with an optotriac without integrated zero-crossing detection circuit.
  • the optotriacs 19v, 19w and 19x could be provided with no integrated zero-crossing detection circuit and the optotriacs 19y and 19z could be equipped with integrated zero-crossing detection circuitry.
  • the switching on of the heating element 11 a is described by way of example.
  • a fixed first period of time for example, a few 100 microseconds before the voltage zero crossing (time 1 in Fig. 3 )
  • the controller 30 activates the optotriac 19v with integrated zero-crossing detection circuit 20v to compensate for the internal delay time of the optotriac 19v.
  • the controller 30 turns on the optotriac 19y with no integrated zero-crossing detection circuit.
  • the engagement of the corresponding triac 18y then causes a defined potential at the voltage input 21v of the optotriac 19v.
  • the integrated zero-crossing detection circuit 20v of the Optotriac 19v can therefore reliably set the voltage zero crossing (time point III in FIG Fig. 3 ) and turn on the triac 18v to cause current flow through the heater 11a.
  • both Optotriacs 19v and 19y are automatically deactivated and the current flow is interrupted.
  • the third period of time is preferably the same as the first period of time, in other words the times I and IV coincide.
  • the Heating element 11 a is to remain switched on a plurality of successive half-waves of the supply voltage in order to achieve a greater heating power, the Optotriacs 19v and 19y at time IV in Fig. 3 not switched off.
  • the second time period is preferably smaller than the first time period. However, this is not necessarily the case.
  • the second semiconductor control element can also be switched on simultaneously with the first semiconductor control element or temporally before the first semiconductor control element.

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)
  • Control Of Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cookers (AREA)
  • Magnetic Heads (AREA)
  • Resistance Heating (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Claims (15)

  1. Chauffe-eau instantané comprenant au moins un élément chauffant par résistance (11) relié à des conduites d'alimentation (17) et comportant des conduites de raccordement (15, 16) entièrement séparées des conduites d'alimentation (17) au moyen d'éléments de commutation à semi-conducteur (18) correspondants, les éléments de commutation à semi-conducteur (18) étant commandés au moyen d'éléments de commande à semi-conducteur (19), caractérisé en ce qu'une conduite de raccordement (15) de l'élément chauffant (11) est reliée au moyen d'un premier élément de commande à semi-conducteur à un circuit intégré de détection de point zéro de tension (20) et une autre conduite de raccordement (16) de l'élément chauffant (11) aux conduites d'alimentation (17) au moyen d'un second élément de commande à semi-conducteur sans circuit intégré de détection de point zéro de tension.
  2. Chauffe-eau instantané selon la revendication 1, caractérisé en ce que le chauffe-eau instantané comporte un dispositif de commande numérique (30).
  3. Chauffe-eau instantané selon la revendication 2, caractérisé en ce que le dispositif de commande numérique (30) est programmé pour commander le premier élément de commande à semi-conducteur.
  4. Chauffe-eau instantané selon la revendication 3, caractérisé en ce que le dispositif de commande numérique (30) est programmé pour mettre en marche le premier élément de commande à semi-conducteur sur un premier laps de temps déterminé avant le point zéro de la tension d'alimentation.
  5. Chauffe-eau instantané selon la revendication 4, caractérisé en ce que le premier laps de temps s'élève au moins à 100 µs, de préférence à au moins 200 µs.
  6. Chauffe-eau instantané selon l'une quelconque des revendications 2 à 5, caractérisé en ce que le dispositif de commande numérique (30) est programmé pour commander le second élément à semi-conducteur.
  7. Chauffe-eau instantané selon la revendication 6, caractérisé en ce que le dispositif de commande numérique (30) est programmé pour mettre en marche le second élément de commande à semi-conducteur sur un deuxième laps de temps déterminé avant le point zéro de la tension d'alimentation.
  8. Chauffe-eau instantané selon la revendication 7, caractérisé en ce que le deuxième laps de temps est inférieur au premier laps de temps.
  9. Chauffe-eau instantané selon la revendication 7 ou 8, caractérisé en ce que le deuxième laps de temps s'élève au moins à 10 µs, de préférence à au moins 20 µs.
  10. Chauffe-eau instantané selon l'une quelconque des revendications 3 à 9, caractérisé en ce que le dispositif de commande numérique (30) est programmé pour mettre hors service le premier élément de commande à semi-conducteur et/ou le second élément de commande à semi-conducteur sur un troisième laps de temps déterminé avant le point zéro de la tension d'alimentation.
  11. Chauffe-eau instantané selon la revendication 10, caractérisé en ce que le troisième laps de temps est identique au premier laps de temps.
  12. Chauffe-eau instantané selon l'une quelconque des revendications 1 à 11, caractérisé en ce que les éléments de commande à semi-conducteur (19) sont des triacs.
  13. Chauffe-eau instantané selon l'une quelconque des revendications 1 à 12, caractérisé en ce que les éléments de commande à semi-conducteur (19) sont commandés de manière optique.
  14. Chauffe-eau instantané selon l'une quelconque des revendications 1 à 13, caractérisé en ce que les éléments de commutation à semi-conducteur (18) sont des triacs.
  15. Chauffe-eau instantané selon l'une quelconque des revendications 1 à 14, caractérisé en ce que l'élément chauffant (11) comporte un filament chauffant fin.
EP05090064A 2005-03-11 2005-03-11 Chauffe-eau instantané Not-in-force EP1701111B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT05090064T ATE469328T1 (de) 2005-03-11 2005-03-11 Durchlauferhitzer
PL05090064T PL1701111T3 (pl) 2005-03-11 2005-03-11 Ogrzewacz przepływowy
EP05090064A EP1701111B1 (fr) 2005-03-11 2005-03-11 Chauffe-eau instantané
DE502005009632T DE502005009632D1 (de) 2005-03-11 2005-03-11 Durchlauferhitzer
HK07102731.3A HK1100967A1 (en) 2005-03-11 2007-03-13 Once through heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05090064A EP1701111B1 (fr) 2005-03-11 2005-03-11 Chauffe-eau instantané

Publications (2)

Publication Number Publication Date
EP1701111A1 EP1701111A1 (fr) 2006-09-13
EP1701111B1 true EP1701111B1 (fr) 2010-05-26

Family

ID=35448100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05090064A Not-in-force EP1701111B1 (fr) 2005-03-11 2005-03-11 Chauffe-eau instantané

Country Status (5)

Country Link
EP (1) EP1701111B1 (fr)
AT (1) ATE469328T1 (fr)
DE (1) DE502005009632D1 (fr)
HK (1) HK1100967A1 (fr)
PL (1) PL1701111T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007060190A1 (de) * 2007-12-14 2009-06-18 BSH Bosch und Siemens Hausgeräte GmbH Heizblock für Warmwassergerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO168009C (no) * 1988-09-19 1994-06-21 Sverre Lillemo Elektrisk koplingsanordning.
US5844759A (en) * 1995-05-26 1998-12-01 David C. Nemir Electrical fault interrupter
WO1999040375A1 (fr) * 1998-02-09 1999-08-12 Mann Robert W Procede et dispositif de chauffage instantane a fluide
DE19808609B4 (de) * 1998-02-28 2004-04-29 Eht Haustechnik Gmbh Verfahren zum Betreiben eines Heißwasserbereiters

Also Published As

Publication number Publication date
HK1100967A1 (en) 2007-10-05
DE502005009632D1 (de) 2010-07-08
ATE469328T1 (de) 2010-06-15
EP1701111A1 (fr) 2006-09-13
PL1701111T3 (pl) 2010-10-29

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