DE4022759A1 - Throughflow electric water heater - has staggered activation of heating elements to ensure removal of air bubbles prior to full heating - Google Patents
Throughflow electric water heater - has staggered activation of heating elements to ensure removal of air bubbles prior to full heatingInfo
- Publication number
- DE4022759A1 DE4022759A1 DE4022759A DE4022759A DE4022759A1 DE 4022759 A1 DE4022759 A1 DE 4022759A1 DE 4022759 A DE4022759 A DE 4022759A DE 4022759 A DE4022759 A DE 4022759A DE 4022759 A1 DE4022759 A1 DE 4022759A1
- Authority
- DE
- Germany
- Prior art keywords
- heating
- air bubbles
- water heater
- switch
- throughflow
- 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.)
- Withdrawn
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 230000004913 activation Effects 0.000 title 1
- 230000001419 dependent effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/128—Preventing overheating
-
- 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
-
- 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
- G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
- G05D23/1912—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can take more than two discrete values
Abstract
Description
Die Erfindung betrifft einen elektrischen Durchlauf-Was serheizer mit zumindest einer im Durchflußweg des aufzu heizenden Wassers angeordneten Heizwendel, die über einen durchflußabhängigen Schalter mit Strom versorgt ist.The invention relates to an electrical run-through heater with at least one in the flow path of the open heating water arranged heating coil, which over a flow-dependent switch is powered.
Aufgabe der Erfindung ist es, bei einem solchen Wasser heizer die aus blanken Drähten bestehenden Heizwendeln vor einer örtlichen Überhitzung zu bewahren, die dadurch eintreten kann, daß bei der Einschaltung und beim Betrieb des Heizers im Bereich der Heizwendel befindliche Luft blasen die Kühlung der Wendel durch das aufzuheizende Wasser örtlich verhindern.The object of the invention is in such water heaters the heating coils made of bare wires from local overheating caused by this can occur when switching on and during operation air in the area of the heating coil of the heater blow the cooling of the spiral through the one to be heated Prevent water locally.
Erfindungsgemäß ist zur Lösung dieser Aufgabe eine vom Einschaltzeitpunkt des durchflußabhängigen elektrischen ersten Schalters beginnend über eine vorgegebene begrenzte Zeitspanne wirksame Sperre des Steuerelementes vorgesehen. According to the invention, one of Switch-on time of the flow-dependent electrical first switch starting over a predetermined limited Period of effective lock of the control element intended.
Nach dem Durchschalten des durchflußabhängig betätigbaren elektrischen Schalters, der unter anderem auch das Steuer element mit Strom versorgt, werden demnach erfindungsge mäß die Steuerelemente sämtlicher Heizwendeln zunächst für eine fest vorgegebene oder variable Zeitspanne ge sperrt. Erst nach Ablauf dieser Zeitspanne werden dann die Steuerelemente für eine leistungsabhängige Steuerung der Heizwendel freigegeben.After switching through the flow-dependent operable electrical switch, which among other things also controls element supplied with electricity, are accordingly fiction according to the controls of all heating coils first for a fixed or variable period of time locks. Only after this period has expired the controls for performance-based control the heating coil released.
Die Dauer der Sperre muß so bemessen sein, daß die gege benenfalls vorhandenen Luftblasen den Bereich der Heiz wendeln bereits verlassen haben, bevor die Heizwendeln zugeschaltet werden. Diese Sperrdauer ist demnach ab hängig von der Geometrie der Rohrstränge, in denen die Heizwendeln untergebracht sind, und vom aktuellen Durchfluß.The duration of the block must be such that the opposite Any air bubbles present in the area of heating have already left the coils before the heating coils be switched on. This blocking period is therefore over depending on the geometry of the pipe strings in which the Heating coils are housed, and from the current Flow.
Die einzige Zeichnungsfigur stellt ein Ausführungsbei spiel der Schaltung eines erfindungsgemäßen Wasserheizers dar.The only drawing figure provides an execution game the circuit of a water heater according to the invention represents.
Der beispielsweise dargestellte Durchlauf-Wasserheizer 1 enthält drei Heizwendel 2, die in den vom aufzuheizenden Wasser nacheinander durchströmten Rohrsträngen 3 unterge bracht sind. Das Wasser strömt diesen Rohrsträngen 3 über eine Wasserversorgungsleitung 4 zu und verläßt - aufge heizt - diesen Heizblock über die Zapfleitung 5 mit dem bedarfsweise betätigbaren Zapfventil 6.The pass-through water heater 1 shown, for example, contains three heating coils 2 , which are placed in the tube strands 3 flowed through in succession by the water to be heated. The water flows to these tube strings 3 via a water supply line 4 and leaves - heated up - this heating block via the dispensing line 5 with the dispensing valve 6 which can be actuated as required.
Jede Heizwendel 2 wird über die Zufuhrleitungen 7 und den elektrischen Schalter 8 aus den Stromversorgungsanschlüs sen 9 mit Strom versorgt.Each heating coil 2 is supplied with power via the supply lines 7 and the electrical switch 8 from the power supply connections 9 .
Der Betätigung des allen drei Wendeln 2 gemeinsamen Schalters 8 dient ein vom Durchfluß in der Wasserversor gungsleitung 4 abhängig betätigbares Schaltglied, zum Beispiel eine Membran 10, die einem Venturirohr 11 ange schlossen ist.The actuation of all three coils 2 common switch 8 is a dependent on the flow in the water supply line 4 operable switching element, for example a membrane 10 , which is a Venturi tube 11 is closed.
Den einzelnen Heizwendeln 2 sind Steuerelemente 12, die aus Triacs oder Thyristoren bestehen, zugeordnet, deren Sperre vom elektrischen Schalter 8 auslösbar und - nach Ablauf einer vorbestimmten Zeitspanne - von einem (nicht dargestellten) Zeitglied beendbar ist. Die Sperre besteht bei Triacs und Thyristoren aus einem Verzögerungsglied für die Zündspannung, bei einem Relais aus einem anzugs verzögerten Relais.The individual heating coils 2 are assigned control elements 12 , which consist of triacs or thyristors, the lock of which can be triggered by the electrical switch 8 and - after a predetermined period of time - can be terminated by a timing element (not shown). In the case of triacs and thyristors, the lock consists of a delay element for the ignition voltage, in the case of a relay it consists of a delayed relay.
Die Funktion dieser Schaltung ergibt sich aus deren oben
geschildertem Aufbau wie folgt:
Wird durch Öffnen des Zapfhahnes 6 aus der Zapfleitung 5
Heißwasser gezapft, beginnt über die Wasserversorgungs
leitung 4 den Rohrsträngen 3 Wasser zuzuströmen, die Mem
bran 10 verstellt infolge des Wasserdurchflusses den
Schalter 8 und die Heizwendeln 2 können über die Leitung
7 und die Steuerelemente 12 mit Strom versorgt werden.The function of this circuit results from the structure described above as follows:
If hot water is tapped by opening the tap 6 from the tap 5, water begins to flow through the water supply line 4 to the tube strings 3 , the membrane 10 adjusts the switch 8 and the heating coils 2 via the line 7 and the control elements 12 as a result of the water flow Electricity are supplied.
Um jedoch - im Falle des Vorhandenseins von Luftblasen im Bereich dieser Heizwendeln 2 - deren Überhitzung zu ver meiden, tritt zunächst erfindungsgemäß eine Sperre der Steuerelemente 12 ein, und die Stromzufuhr zu den Heizwen deln 2 wird, von einem Zeitglied gesteuert, so lange unterbrochen, bis die gegebenenfalls vorhandenen Luft blasen die Rohrstränge 3 verlassen haben. Somit bleibt das Schließen des elektrischen Schalters 8 zunächst un wirksam, da der zweite elektrische Schalter geöffnet bleibt.However, in order - in the event of the presence of air bubbles in the area of these heating coils 2 - to avoid their overheating, a lock of the control elements 12 initially occurs according to the invention, and the power supply to the heating coils 2 is controlled by a timer as long as it is interrupted, until the existing air bubbles have left the pipe strings 3 . Thus, the closing of the electrical switch 8 initially remains ineffective since the second electrical switch remains open.
Nach Ablauf der konstant oder variabel vorgegebenen Zeit spanne wird die Sperre aufgehoben und die Steuerelemente 12 werden zur bloß leistungsabhängigen Steuerung der Stromzufuhr zu den Heizwendeln 2 freigegeben.After the constant or variable predetermined time period, the lock is lifted and the control elements 12 are released for merely power-dependent control of the power supply to the heating coils 2 .
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4022759A DE4022759A1 (en) | 1990-07-14 | 1990-07-14 | Throughflow electric water heater - has staggered activation of heating elements to ensure removal of air bubbles prior to full heating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4022759A DE4022759A1 (en) | 1990-07-14 | 1990-07-14 | Throughflow electric water heater - has staggered activation of heating elements to ensure removal of air bubbles prior to full heating |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4022759A1 true DE4022759A1 (en) | 1992-01-16 |
Family
ID=6410473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4022759A Withdrawn DE4022759A1 (en) | 1990-07-14 | 1990-07-14 | Throughflow electric water heater - has staggered activation of heating elements to ensure removal of air bubbles prior to full heating |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4022759A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4211590C1 (en) * | 1992-04-07 | 1993-10-07 | Kulmbacher Klimageraete | Electric instantaneous water heater |
DE4315468C1 (en) * | 1993-05-10 | 1994-06-09 | Stiebel Eltron Gmbh & Co Kg | Electric through-flow water heater operating method - using electromechanical switch closed before power circuit is switched in and opened after power circuit is disconnected |
WO2010063629A3 (en) * | 2008-12-01 | 2011-06-30 | Voss Automotive Gmbh | Method and heating system for heating a fluid line system, particularly in a motor vehicle |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1101647B (en) * | 1959-07-30 | 1961-03-09 | Licentia Gmbh | Electrically heated water heater |
DE1166953B (en) * | 1959-08-31 | 1964-04-02 | Licentia Gmbh | Electrically heated water heater |
DE1565130A1 (en) * | 1965-04-07 | 1970-01-15 | Stiebel Werke Gmbh & Co Dr | Safety switching device for the heating coils of a flow heater |
DE2364975A1 (en) * | 1973-12-28 | 1975-07-03 | Eckerfeld Geb Reip Elisabeth | Continuous flow electrical heater - has heating element forming flow channel covered with hood |
DE3436140A1 (en) * | 1984-10-02 | 1986-04-03 | Werner 8069 Ilmmünster Bernhardt | Hot water continuous-flow heater |
DE3443543A1 (en) * | 1984-11-29 | 1986-06-05 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Electric flow heater |
DE3629662A1 (en) * | 1986-08-30 | 1988-03-10 | Stiebel Eltron Gmbh & Co Kg | Control circuit of an electric flow heater |
DE3818048A1 (en) * | 1987-06-05 | 1988-12-15 | Vaillant Joh Gmbh & Co | Control system for an electric instantaneous water heater |
-
1990
- 1990-07-14 DE DE4022759A patent/DE4022759A1/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1101647B (en) * | 1959-07-30 | 1961-03-09 | Licentia Gmbh | Electrically heated water heater |
DE1166953B (en) * | 1959-08-31 | 1964-04-02 | Licentia Gmbh | Electrically heated water heater |
DE1565130A1 (en) * | 1965-04-07 | 1970-01-15 | Stiebel Werke Gmbh & Co Dr | Safety switching device for the heating coils of a flow heater |
DE2364975A1 (en) * | 1973-12-28 | 1975-07-03 | Eckerfeld Geb Reip Elisabeth | Continuous flow electrical heater - has heating element forming flow channel covered with hood |
DE3436140A1 (en) * | 1984-10-02 | 1986-04-03 | Werner 8069 Ilmmünster Bernhardt | Hot water continuous-flow heater |
DE3443543A1 (en) * | 1984-11-29 | 1986-06-05 | Stiebel Eltron Gmbh & Co Kg, 3450 Holzminden | Electric flow heater |
DE3629662A1 (en) * | 1986-08-30 | 1988-03-10 | Stiebel Eltron Gmbh & Co Kg | Control circuit of an electric flow heater |
DE3818048A1 (en) * | 1987-06-05 | 1988-12-15 | Vaillant Joh Gmbh & Co | Control system for an electric instantaneous water heater |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4211590C1 (en) * | 1992-04-07 | 1993-10-07 | Kulmbacher Klimageraete | Electric instantaneous water heater |
DE4315468C1 (en) * | 1993-05-10 | 1994-06-09 | Stiebel Eltron Gmbh & Co Kg | Electric through-flow water heater operating method - using electromechanical switch closed before power circuit is switched in and opened after power circuit is disconnected |
WO2010063629A3 (en) * | 2008-12-01 | 2011-06-30 | Voss Automotive Gmbh | Method and heating system for heating a fluid line system, particularly in a motor vehicle |
US8890039B2 (en) | 2008-12-01 | 2014-11-18 | Voss Automotive Gmbh | Method and heating system for heating a fluid line system, particularly in a motor vehicle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8139 | Disposal/non-payment of the annual fee |