EP1431681A1 - Durchlauferhitzer - Google Patents
Durchlauferhitzer Download PDFInfo
- Publication number
- EP1431681A1 EP1431681A1 EP03090415A EP03090415A EP1431681A1 EP 1431681 A1 EP1431681 A1 EP 1431681A1 EP 03090415 A EP03090415 A EP 03090415A EP 03090415 A EP03090415 A EP 03090415A EP 1431681 A1 EP1431681 A1 EP 1431681A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- continuous
- heater according
- switching
- flow heater
- switched
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000001419 dependent effect Effects 0.000 claims abstract description 9
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 230000006870 function Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
- H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
- H01H47/005—Safety control circuits therefor, e.g. chain of relays mutually monitoring each other
-
- 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
-
- 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
Definitions
- the invention relates to a water heater with a heating device for heating of running water that is used to generate at least one discrete heating output value is set up, and which comprises a switching device which in the circuit is arranged for the heating device and discrete, depending on the flow rate Has switching states, the circuit in a first switching state interrupted for the heater and it is therefore switched off, and in the closed at least one further switching state of the circuit for the heating device and it is therefore switched on.
- the switching device is controlled hydraulically. It is a pressure or flow switch in the water pipe with a plunger provided the different positions depending on the flow rate of the water occupies a mechanical and when a certain position is exceeded Triggers the switching process. In the simplest case there are only two switch positions correspondingly off and on heating element. The switching point becomes one mechanical spring force determined. The hysteresis between the switch-on and switch-off point is determined by the mechanical properties. Sealing moving parts, here of the plunger towards the inside of the device, however, is susceptible to wear and requires high maintenance.
- the object of the invention is a water heater of the type mentioned Provide type that has a low manufacturing cost, reliable and / or is inexpensive to operate.
- the invention provides that the switching device is dependent the flow rate is controlled digitally-electronically.
- Discrete heating output values are those that not only differ gradually, but for example by at least 5%, preferably at least 10%. Another way of definition is in the fact that different discrete heating outputs are not only gradual differences cause water heating. At the switch-on point, the difference is in the outlet temperature between any two discrete heating outputs is therefore preferred at least 5 ° C, more preferably at least 10 ° C. This is the invention Instantaneous water heater from the known devices with infinitely adjustable Delimited heating output.
- Digital-electronic means by means of an essentially digital circuit. Essentially means that at least the flow rate measurement processing by means of digital electronics. This way compared to analog electronics avoided that, for example, a temperature influence negatively affects the accuracy the circuit affects.
- the entire circuit is preferably digital-electronic. It However, it is not excluded that a water heater according to the invention in addition which also has digital and analog electronics.
- the circuit for the heater is the circuit that holds the heater with a primary voltage source, for example the AC network, which connects to Generation of heating power is used.
- a primary voltage source for example the AC network
- Each of the different discrete heating outputs a corresponding discrete switching state is assigned to the switching device.
- discreet stands in contrast to stepless, i.e. in contrast to a dimmer.
- Flow dependent switching states means that a transition between two Switching states depending on the current water flow rate takes place. Flow rate is abbreviated below for flow rate per unit of time (l / min) used. Often there are only two, depending on the flow rate Switching states corresponding to the heating device switched on and off. Then the Heating at a certain switching point that a predetermined flow rate corresponds, switched on.
- Each possible heating output value is usually a separate heating element or generated by connecting separate heating elements in parallel.
- a heating element is, for example. a single heating coil. If, for example, two or three different heating outputs To be able to be generated, two heating coils are provided for this purpose, individually or in Combination can be operated.
- the number of different producible, heating power values other than zero are generally at most four, preferably at most two, more preferably exactly one, so that the number of necessary Heating elements can be kept low.
- the number of the flow rate dependent switching states is accordingly at most five, preferably at most three, more preferably exactly two.
- the switching device consists of two relays, which are each arranged in one of the two feed lines of the heating device, so complete disconnection from the mains is achieved when the device is switched off.
- the relay For switching on the relay is connected to a certain switch-on voltage, this is connected in parallel between the switch-on voltage and ground.
- Another aspect of the present invention relates to the generation of hysteresis in Regarding switching the switching device on and off. Because the flow rate could fluctuate due to pressure fluctuations, it could be when the on and off point coincided with one lying in the area of this switching point Flow rate come to constant on and off, which is disadvantageous in view on wear and comfort. With the usual hydraulically controlled devices becomes hysteresis, i.e. a lower switch-off point compared to the switch-on point the switching device, by the formation of the plunger in the pressure switch generated by taking advantage of the difference between static and sliding friction, for example makes.
- an electronically controlled switching device can an oscillator for generating a reference clock for the counting of a pulse generator provided pulses generated depending on the flow rate his.
- the Heating device lowered or increased the frequency of the oscillator, so that the switch-off signal at a lower flow rate compared to the switch-on signal is triggered.
- the relative frequency change is preferably in the range of 5 to 30%, more preferably 10 to 20 %.
- the heating device is formed by the heating coil 10 in the example of FIG. 1. This is fed from the AC network 11.
- a switch 14 and 15 is arranged in order to switch off to effect a complete network separation.
- the use of a single switch 14 or 15 is also sufficient. If both Switches 14, 15 are closed, alternating current flows through the heating coil 10 in order to heat water flowing through the water pipe 16.
- the switches 14, 15 are each designed as a relay 17, 18.
- the switches 14, 15 and the relays 17, 18 form in Example of Fig. 1, the switching device.
- the switches 14, 15 are closed when, as shown in Fig. 2, a control voltage is applied to the relays 17, 18.
- the switches 20, 21, 22 opened and, since there is no control voltage at the relays 17, 18, the switches 14, 15 open.
- switches 20 and 21 are immediately closed or switched on.
- the ⁇ U detection 24, which are essentially formed by a zener diode, for example can, detected at its input 25 due to the closed switch 20 zero Volts and therefore closes switch 22.
- the series connection of the Relays 17, 18 can be generalized to more than two relays.
- the switch 20 opened by the timer 26.
- the potential at the input 25 of the ⁇ U detection 24 is 17 + Ub due to the inertia of the relay, which causes the ⁇ U detection 24, to open the switch 22.
- the current now flows through the connection line 27 series-connected relays 17, 18 and the closed switch 21.
- On the relays 17, 18 each drop the voltage of about 0.5 Ub, but this is sufficient to keep the relay switched on once in the switched on state. by virtue of the inertia of the relays 17, 18 remain during the switchover from parallel to Series connection permanently closed.
- the "relay on” signal is generated by means of the circuit shown in FIG. 3.
- the pulse generator 30 generates voltage pulses when the water flows through the line 16, their frequency proportional to the flow rate of the water through line 16. This can be done inductively and for example by means of a turbine 31 thus take place without contact. Incidentally, this has the advantage that air bubble detection can be provided, which is not without conventional pressure switches further is possible. A sealing of the pulse generator 30 with respect to the line 16 is therefore superfluous.
- the pulses generated by the pulse generator 30 become the reset input 32 of the counter 33 passed.
- the counter 33 increments a count value a counting frequency defined by the oscillator 34. When exceeding a set
- the timeout output 35 of the counter 33 is switched on and this threshold Timeout signal stored in memory 36. If at the control input 37 of the Memory 36 arrives a pulse becomes a value that is stored in memory 36 Value is inverse, as a relay control signal on the signal line 23 for controlling the Switches 20, 21 issued.
- the pulse generator generates 30 voltage pulses with high frequency and short time interval. At a certain time there will be a first Pulse passed to the reset input 32 of the counter 33. Due to the reset, the Counter 33 off the timeout output 35, the off value is stored in the memory 36. Immediately after the reset, the count of counter 33 is set to zero and the Counter 33 begins incrementing the count value with that of oscillator 34 predetermined clock frequency. After a short time, the transmitter 30 generates the next one second pulse, which is given to the reset input 32 of the counter 33, so that the Counter 33 resets the count value to zero.
- timeout output 35 of the counter 33 thus remains switched off.
- the timeout output 35 of the counter 33 thus remains at a sufficiently high frequency pulses generated by the pulse generator 30 are constantly switched off.
- the voltage pulses generated by the pulse generator 30 are via the line 38 from Pulse generator 30 via a delay element 39 to the control input 37 of the memory 36 headed.
- the second pulse triggers after one the time delay 39 determines the activation of the memory 36 out.
- the memory 36 inputs a stored off signal inverse signal, that is, an on signal, from the signal line 23.
- the relay on signal leads, as explained in connection with FIG. 2, to the switching on of the heating device.
- the relay on signal is sent to the oscillator 34 via the line 40, which causes a lowering of the oscillation frequency in the oscillator 34. Because of this, the counting frequency of the counter 33 is lowered, so that in the counter 33 defined count threshold even with comparatively larger pulse intervals, that is lower flow rate is not exceeded and therefore the relays 17, 18 also at a flow rate that is below the switch-on value, remain switched on and only when the switch-off value of the flow rate is below this switch-on value turned off. In this way the desired hysteresis between Switching on and switching off reached.
- the last one from the pulse generator 30 generated pulse triggers the reset of counter 33; the timeout output 35 of the The counter is switched off.
- the counter 33 sets its count value to zero and begins with the increment of the count value. Since the pulse generator 30 no further pulse generated, the count value eventually exceeds the threshold set in counter 33.
- the overflow causes the counter 33 to switch on the timeout output 35 of the counter 33.
- the timeout signal is applied to the memory 36 and simultaneously via the Line 42 to the timer 39. After the time defined in timer 39 has taken over the memory 36 sends the timeout signal to its inverted output and switches Relays 17 and 18 from line 23.
- the timeout signal is over the line 41 is passed to the oscillator 34 to deactivate it and the counting process to interrupt with it.
- the counting process is only carried out by the next one Reset of the counter 33 started by a pulse generated by the pulse generator 30. Instead of the increment of the counter value in counter 33 may, in another embodiment decrementing also takes place. Instead of lowering the oscillation frequency in another embodiment, the oscillator 34 can also have a boost the same take place.
- This control signal causes memory 36 to output the relay off signal on signal line 23, to switch off the relays 17, 18 or leave them switched off. Since it is in this value range of the flow rate for a constant change of the timeout output 35 of the counter 33 comes, it is advantageous to set the value of the output 35 in temporarily store the memory 36 and the memory 36 only when switched on trigger the timeout output 35 via the line 42 and the delay element 39, since without the memory 36 a constant, wear-promoting switching of the relays 17, 18 would take place.
- the delay time of the delay element is expedient much less, preferably 0.1 or less, than the distance between two Pulse in the area of the switch-on or switch-off threshold.
- the oscillation frequency is turned off Relay 17, 18 determined by the capacitor 50.
- the oscillation frequency is preferably adjustable. If the relays 17, 18 are turned on, this causes Relay on signal via line 40 to close switch 51 and thus Parallel connection of a capacitance, namely one or both capacitors 52, 53 for Capacitor 50. This leads to a lowering of the oscillation frequency of the oscillator 34.
- One of the two capacitors 52, 53 is sufficient to fulfill this function.
- two capacitors 52, 53 are connected in parallel. By choosing one or both capacitors can then have different values of frequency reduction for example in the preferred range of 10-20%.
- Preferably corresponding bridges 54, 55 are provided for each capacitor 52, 53.
- One of the Both bridges can be removed, for example, in the factory or on the installation site, around the set the desired value for the difference between the switch-on and switch-off point. In this way, a wide range of devices can be implemented with one circuit.
- a continuous adjustability of the Capacity or more generally the oscillation frequency can be realized.
- the embodiment, not shown, can be used to change the oscillation frequency Resistance in the oscillator circuit can be changed.
- the heating device comprises two heating coils 10, 60 corresponding to two heating levels. Switching between the two Heating coils 10, 60 take place by means of switches 61, 62, which are preferably designed as relays are. The switching of the switches 61, 62 can, for example, also depend on the Flow rate through line 16 take place. At a first switch-on point For example, the switches 14, 15 closed, current flows through the heating element 10. At a second switch-on point corresponding to a higher flow rate are additionally the switches 61, 62 switched, current flows through the heating element 60, which is one has higher heating power than the heating element 10.
- the switching of the switches 61, 62 can also take place independently of the flow rate in another embodiment, for example by means of a control element, not shown, from the outside the user. This can then have two different heating capacities and thus water temperatures choose. In this example, only the switches 14, 15 in Dependent on the flow rate switched. In another embodiment, can alternatively the connection of a second heating coil to a first heating coil respectively. The connection can either be made dependent on the water flow be selected, or be selected by a control element.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Resistance Heating (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Air-Conditioning For Vehicles (AREA)
- Resistance Heating (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
- Fig. 1:
- ein Schaltungsdiagramm des Stromkreises für die Heizeinrichtung;
- Fig. 2:
- ein Schaltungsdiagramm für die Schalteinrichtung;
- Fig. 3:
- ein Schaltungsdiagramm der Schaltung für die Erzeugung des Steuersignals für die Schalteinrichtung;
- Fig. 4:
- ein Schaltungsdiagramm des Oszillators; und
- Fig. 5:
- ein Schaltungsdiagramm einer alternativen Ausführungsform des Stromkreises für die Heizeinrichtung.
Claims (17)
- Durchlauferhitzer mit einer Heizeinrichtung (10, 60) zum Erwärmen von fließendem Wasser, der zur Erzeugung mindestens eines diskreten Heizleistungswertes eingerichtet ist, und der eine Schalteinrichtung (14, 15) umfaßt, die in dem Stromkreis für die Heizeinrichtung (10, 60) angeordnet ist und diskrete, von der Durchflußmenge abhängige Schaltzustände aufweist, wobei in einem ersten Schaltzustand der Stromkreis für die Heizeinrichtung (10, 60) unterbrochen und diese daher ausgeschaltet ist, und in dem mindestens einen weiteren Schaltzustand der Stromkreis für die Heizeinrichtung (10, 60) geschlossen und diese daher eingeschaltet ist, dadurch gekennzeichnet, daß die Schalteinrichtung (14, 15) in Abhängigkeit der Durchflußmenge digital-elektronisch gesteuert wird.
- Durchlauferhitzer nach Anspruch 1, dadurch gekennzeichnet, daß die Anzahl der von der Durchflußmenge abhängigen Schaltzustände höchstens fünf, vorzugsweise höchstens drei, weiter vorzugsweise genau zwei beträgt.
- Durchlauferhitzer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schalteinrichtung (14, 15) die Heizeinrichtung (10, 60) im ausgeschalteten Zustand galvanisch vollständig von der Stromversorgung (11) trennt.
- Durchlauferhitzer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schalteinrichtung mindestens ein Relais, vorzugsweise mindestens zwei Relais (17, 18) umfaßt.
- Durchlauferhitzer nach Anspruch 4, dadurch gekennzeichnet, daß zwei Relais (17, 18) nach dem Einschalten der Heizeinrichtung (10, 60) in Serie miteinander geschaltet werden.
- Durchlauferhitzer nach Anspruch 5, dadurch gekennzeichnet, daß die Umschaltung der Relais (17, 18) in Serie selbsttätig nach Ablauf einer vorbestimmten Zeitspanne erfolgt.
- Durchlauferhitzer nach Anspruch 6, dadurch gekennzeichnet, daß die Umschaltung der Relais (17, 18) in Serie unter Verwendung eines Zeitglieds (26) erfolgt.
- Durchlauferhitzer nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Umschaltung der Relais (17, 18) in Serie unter Verwendung einer Spannungsdifferenzerkennung (24) erfolgt.
- Durchlauferhitzer nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß nach dem Einschalten der Heizeinrichtung (10, 60) die Frequenz eines für die elektronische Steuerung der Schalteinrichtung (14, 15) verwendeten Oszillators (34) abgesenkt oder erhöht wird.
- Durchlauferhitzer nach Anspruch 9, dadurch gekennzeichnet, daß die Änderung der Oszillatorfrequenz im Bereich von 5 % bis 30 %, vorzugsweise 10 % bis 20 % liegt.
- Durchlauferhitzer nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die Änderung der Oszillatorfrequenz durch Änderung frequenzbestimmender Eigenschaften, insbesondere der Kapazität und/oder des Widerstands, des Oszillators (34) erfolgt.
- Durchlauferhitzer nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, daß die Änderung der Oszillatorfrequenz durch Parallelschalten einer Kapazität zu den frequenzbestimmenden Bauteilen des Oszillators (34) erfolgt.
- Durchlauferhitzer nach Anspruch 12, dadurch gekennzeichnet, daß die Kapazität mindestens zwei parallel geschaltete Kondensatoren (52, 53) umfaßt.
- Durchlauferhitzer nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß ein für die elektronische Steuerung der Schalteinrichtung (14, 15) verwendetes Steuersignal in einem Speicher (36) zwischengespeichert wird.
- Durchlauferhitzer nach Anspruch 14, dadurch gekennzeichnet, daß der Ausgang des Speichers (36) durch ein Steuersignal ausgelöst wird, das auf der Grundlage eines durch einen Impulsgeber (30) erzeugten Pulses oder eines aus einem Zähler (33) ausgegebenen Signals gebildet wird.
- Durchlauferhitzer nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß der Steuereingang (37) des Speichers (36) mit einem Verzögerungsglied (39) verbunden ist.
- Durchlauferhitzer nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, daß die digital-elektronische Steuerung der Schalteinrichtung (14, 15) unter Verzicht auf einen Mikroprozessor erfolgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20219939U | 2002-12-17 | ||
DE20219939U DE20219939U1 (de) | 2002-12-17 | 2002-12-17 | Durchlauferhitzer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1431681A1 true EP1431681A1 (de) | 2004-06-23 |
EP1431681B1 EP1431681B1 (de) | 2007-09-12 |
Family
ID=32240655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03090415A Expired - Lifetime EP1431681B1 (de) | 2002-12-17 | 2003-12-03 | Durchlauferhitzer |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1431681B1 (de) |
AT (1) | ATE373211T1 (de) |
DE (2) | DE20219939U1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200278133A1 (en) * | 2019-02-28 | 2020-09-03 | Gerdes Holding Gmbh & Co. Kg | Continuous-flow heater with a safety circuit |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3419607A1 (de) * | 1984-05-25 | 1985-11-28 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Steuerung eines elektrischen durchlauferhitzers |
DE4103373A1 (de) * | 1991-02-05 | 1992-08-06 | Stiebel Eltron Gmbh & Co Kg | Durchlauferhitzer |
DE4401670A1 (de) * | 1994-01-21 | 1995-08-17 | Kulmbacher Klimageraete | Anordnung zum Steuern der Heizenergiezufuhr zu den Heizwicklungen eines elektrischen Durchlauferhitzers |
WO1999040375A1 (en) * | 1998-02-09 | 1999-08-12 | Mann Robert W | Instantaneous fluid heating device and process |
DE10127281C1 (de) * | 2001-05-28 | 2002-10-02 | Schleicher Relais | Schaltungsanordnung zum Betreiben von Relais |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3304322A1 (de) * | 1983-02-09 | 1984-08-09 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Elektrischer durchlauferhitzer |
US5479558A (en) * | 1993-08-30 | 1995-12-26 | White, Jr.; James A. | Flow-through tankless water heater with flow switch and heater control system |
DE19702904C2 (de) * | 1997-01-28 | 1999-12-30 | Stiebel Eltron Gmbh & Co Kg | Überwachungsschaltung bei einem Durchlauferhitzer |
DE19725977C2 (de) * | 1997-06-19 | 2001-11-29 | Kulmbacher Klimageraete | Elektrischer Durchlauferhitzer und Verfahren zum Überwachen des Wasserzulaufs |
-
2002
- 2002-12-17 DE DE20219939U patent/DE20219939U1/de not_active Expired - Lifetime
-
2003
- 2003-12-03 EP EP03090415A patent/EP1431681B1/de not_active Expired - Lifetime
- 2003-12-03 AT AT03090415T patent/ATE373211T1/de not_active IP Right Cessation
- 2003-12-03 DE DE50308165T patent/DE50308165D1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3419607A1 (de) * | 1984-05-25 | 1985-11-28 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Steuerung eines elektrischen durchlauferhitzers |
DE4103373A1 (de) * | 1991-02-05 | 1992-08-06 | Stiebel Eltron Gmbh & Co Kg | Durchlauferhitzer |
DE4401670A1 (de) * | 1994-01-21 | 1995-08-17 | Kulmbacher Klimageraete | Anordnung zum Steuern der Heizenergiezufuhr zu den Heizwicklungen eines elektrischen Durchlauferhitzers |
WO1999040375A1 (en) * | 1998-02-09 | 1999-08-12 | Mann Robert W | Instantaneous fluid heating device and process |
DE10127281C1 (de) * | 2001-05-28 | 2002-10-02 | Schleicher Relais | Schaltungsanordnung zum Betreiben von Relais |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20200278133A1 (en) * | 2019-02-28 | 2020-09-03 | Gerdes Holding Gmbh & Co. Kg | Continuous-flow heater with a safety circuit |
CN111623520A (zh) * | 2019-02-28 | 2020-09-04 | 格德斯控股两合公司 | 带有安全电路的连续式加热器 |
Also Published As
Publication number | Publication date |
---|---|
DE20219939U1 (de) | 2004-04-29 |
DE50308165D1 (de) | 2007-10-25 |
ATE373211T1 (de) | 2007-09-15 |
EP1431681B1 (de) | 2007-09-12 |
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