DE4111257A1 - Heater valve thermostat head connected to drive mechanism - incorporates expansion piece with separate circuit - Google Patents
Heater valve thermostat head connected to drive mechanism - incorporates expansion piece with separate circuitInfo
- Publication number
- DE4111257A1 DE4111257A1 DE4111257A DE4111257A DE4111257A1 DE 4111257 A1 DE4111257 A1 DE 4111257A1 DE 4111257 A DE4111257 A DE 4111257A DE 4111257 A DE4111257 A DE 4111257A DE 4111257 A1 DE4111257 A1 DE 4111257A1
- Authority
- DE
- Germany
- Prior art keywords
- thermostatic head
- drive
- drive according
- thermostatic
- head
- 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- Withdrawn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 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 3
- 239000012530 fluid Substances 0.000 claims 2
- 241000905957 Channa melasoma Species 0.000 claims 1
- 241000404236 Zizina otis Species 0.000 claims 1
- 230000002528 anti-freeze Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000011156 evaluation Methods 0.000 claims 1
- 230000002269 spontaneous effect Effects 0.000 claims 1
- 238000010792 warming Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
- F24D19/1018—Radiator valves
-
- 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
- G05D23/1902—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value
- G05D23/1904—Control of temperature characterised by the use of electric means characterised by the use of a variable reference value variable in 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
- G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
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)
- Control Of Temperature (AREA)
Abstract
Description
Die Anmeldung betrifft einen mit einem ANTRIEB kombinierten konventionellen Thermostatkopf für thermostatisch regelnde Heizkörperventile von Zentralheizungsanlagen.The registration concerns one with a DRIVE combined conventional thermostatic head for thermostatically controlled radiator valves of central heating systems.
Zentralheizungsanlagen übertragen die Wärme in der Regel in die zu heizenden Räume über sogen. Heizkörper, auch Radiatoren, oder - in einer anderen Bauart und Wirkform - Konvektoren genannt.Central heating systems transfer the heat in usually in the rooms to be heated via so-called. Radiators, including radiators, or - in one different design and mode of action - convectors called.
Nach heutigem Stand der Technik kann davon ausgegangen werden, daß die Temperaturregelung in den einzelnen Räumen (bezw. die Energie zufuhr zu den Heizkörpern) mittels thermostat isch selbst-regelnder, einstellbarer Heizkör perventile erfolgt.According to the current state of the art, it can be assumed that the temperature control in the individual rooms (or the energy supply to the radiators) by means of a thermostat is self-regulating, adjustable radiator perventile.
Deren Funktionsweise ist, vereinfacht, durch ein im Regelteil des Ventils (dem Thermostat kopf) eingebautes Dehn-Element erklärt, das sich bei Erwärmung ausdeht, und dadurch den Zufluß an Heiz-Medium (in der Regel Heiß-Wasser) drosselt oder sperrt; bezw. umgekehrt bei Abkühlung sich zusammenzieht, und dadurch den Durchfluß im Heizkörperventil erhöht, bezw. freigibt.Their mode of operation is simplified by one in the control part of the valve (the thermostat head) built-in expansion element explains that expands when heated, and thereby the Inflow of heating medium (usually hot water) throttles or blocks; respectively. vice versa at Cooling contracts, and thereby increases the flow in the radiator valve, respectively. releases.
Ganz wesentlicher und system-bedingter Nachteil dieser thermostatischen Heizkörper-Regelung ist der Tatbestand, daß ein solcher Thermostat, wenn er nicht vollständig ZU-gedreht wurde, auch dann immer AUF-regeln wird, wenn er Kälte wahrnimmt - also auch dann, wenn erhöhte Wärme- Zufuhr eher als unerwünscht erachtet wird, weil beispielsweise ein Fenster auf einem Flur offen blieb, oder weil in einem Raum gelüftet wird.A very significant and systemic disadvantage this thermostatic radiator control is the fact that such a thermostat, if it’s not fully turned, even if it is cold perceives - also when increased heat Is considered undesirable, because, for example, a window on one Hallway remained open, or because in a room is aired.
Dieser bei nicht vollends ZU-gedrehtem Thermo statventil praktisch nicht abstellbare und system-bedingte Zustand des "Zum-Fenster-Hinaus- Heizens" bedeutet für den Betreiber der Heiz anlage einen unkontrollierten, unkontrollier baren erhöhten Heizenergieverbrauch. In den hier in erster Linie gedachten Fällen von sogen. WARM MIETE (in erster Linie das gesamte Beherbergungsgewerbe - im weitesten Sinne des Wortes . . .) kann der Betreiber in der Regel diesen unkontrollierten Mehr-Verbrauch weder über den Preis seines Leistungs-Angebotes ausgleichen, noch ihn zu lenken versuchen.This with the thermo not fully turned Statventil practically not shut off and system-related state of the "window out" Heating "means for the operator of the heating plant an uncontrolled, uncontrolled increased heating energy consumption. In the here primarily intended cases of so-called WARM RENT (primarily the whole Accommodation industry - in the broadest sense of the word . . .) the operator can usually this uncontrolled additional consumption neither about the price of its range of services balance, still try to steer him.
Bedeutender aber erscheint als Folgewirkung der durch nichts mehr gerechtfertigte unkon trollierte Verbrauch von nicht-regenerierbaren Energie-Resourcen; und die damit einhergehende, durchaus vermeidbare zusätzliche Belastung der Umwelt durch die Reststoffe der heutzutage noch als vorherrschend zu erachtenden Energie- Erzeugung aus fossilen Brennstoffen.However, more important appears as a consequence the unconfirmed no longer justified controlled consumption of non-regenerable Energy resources; and the associated avoidable additional burden the environment through the residues of today still to be considered predominant energy Generation from fossil fuels.
Bisherige Lösungen zu diesem Phänomen der
personen- und raum-individuellen Heizenergie-
Verschwendung sind mannigfacher Art:
Einzelraum-Überwachung über die Kontrolle
der Raum-Belegung;
zeit-abhängige Regelung der Energie-Zufuhr
(z. B. Nacht-Absenkung);
Schaltung und Steuerung der Heizkörper-Ventile
in Abhängigkeit von dem Zustand "OFFEN" oder
"GESCHLOSSEN" von Fenstern/Türen über entsprech
ende Fenster-/Tür-Kontakte.
Previous solutions to this phenomenon of wasting heating energy in terms of people and rooms are manifold:
Single room monitoring via the control of the room occupancy;
time-dependent regulation of the energy supply (e.g. night reduction);
Switching and control of the radiator valves depending on the "OPEN" or "CLOSED" state of windows / doors via corresponding window / door contacts.
Teilweise sind diese Lösungen nicht konsequent:
Bei abgesenkter Temperatur wird zwar weniger,
aber doch immer auch weiterhin "zum Fenster
hinaus" geheizt;
oder sie sind zudem enorm aufwendig und komplex -
wie z. B. sogen Zentrale Leittechnik;
oder sie sind schließlich von der Installation
her mit raum- oder fenster-/tür-individuellen
Kontakten, Meldern, Verdrahtungen, Steuerge
räten, erforderlichen el. Anschlüssen . . etc.
installations-aufwendig, - und werden zudem
bei nachträglicher (auf-putz) Verlegung häufig
aus architektonischen oder ähnlichen ästheti
schen Erwägungen abgelehnt.In some cases, these solutions are not consistent: although the temperature is reduced, less heating is still carried out "out the window";
or they are also enormously complex and complex - such as B. so-called central control technology;
or, finally, they are installation-specific with contacts specific to the room or window / door, detectors, wiring, control units, required electrical connections. . etc. installation-complex, - and are also often rejected for subsequent (on-wall) installation for architectural or similar aesthetic considerations.
Der Anmeldung liegt die Aufgabe zugrunde, vor allem der Verschwendung und der Umwelt- Belastung dadurch entgegenzuwirken, daß jenes Thermostatventil über einen mechanisch betät igten Thermostatkopf nach einer dort eingebauten Zeit-Vorgabe, oder durch ein anderes Auslöse- Parameter, betätigt (in erster Linie ZU-gedreht) wird. Der mechanische ANTRIEB soll erfindungs gemäß ein mechanisches Laufwerk ("Uhrwerk"), oder ein elektro-motorisches Laufwerk sein.The registration is based on the task especially waste and environmental To counteract the burden of that Thermostatic valve operated mechanically thermostat head after a built in there Time specification, or by another trigger Parameters, operated (primarily CLOSED) becomes. The mechanical DRIVE should be fiction according to a mechanical drive ("clockwork"), or an electric motor drive.
Der ANTRIEB kann erfindungsgemäß im Gehäuse (Deckel) des Thermostatkopfes untergebracht sein; oder er kann eine separate Einheit sein, die mit diesem Gehäuse leicht verbunden werden kann.The DRIVE can according to the invention in the housing (Cover) of the thermostatic head be; or it can be a separate entity, which are easily connected to this housing can.
Zum ANTRIEB gehört erfindungsgemäß eine Zeit- Einheit samt einer zeit-abhängig betätigten Verriegelung/Entriegelung, über die der Zeit punkt der Funktions-Auslösung vorgegeben werden kann.According to the invention, the DRIVE includes a time Unit including a time-operated one Locking / unlocking over time the point at which the function is triggered can.
Die aus ANTRIEB und Thermostatkopf bestehende Einheit enthält erfindungsgemäß eine oder mehrere Positions-Verriegelung/-en, mittels derer die durch den ANTRIEB einzustellende End-Position angepaß/gewählt werden kann.The one consisting of DRIVE and thermostatic head According to the invention, unit contains one or several position locking / s, by means of the one to be set by the DRIVE End position can be adjusted / selected.
Das manuelle In-Betrieb-Nehmen des ANTRIEBS, und das manuelle Einstellen der gewünschten Raum-Temperatur am Thermostatkopf erfolgt erfindungsgemäß in zwei von einander getrennten, aber eindeutig priorisierten (erst Zeit-Vorgabe, - dann Temperatur-Vorgabe → siehe auch Anspruch 15 . . .) Funktionen.Manual commissioning of the DRIVE, and manually setting the desired one Room temperature is at the thermostatic head according to the invention in two separate, but clearly prioritized (only time specification, then temperature specification → see also claim 15. . .) Functions.
Die konventionelle manuelle Betätigung eines solchen Thermostatkopfes erfolgt in seiner OFFEN-Stellung (Betriebs-Stellung) erfindungs gemäß unverändert durch manuelles Anwählen der gewünschten Temperatur an eben jenem Thermo statkopf.The conventional manual operation of a such a thermostatic head takes place in his OPEN position (operating position) fiction according to unchanged by manually selecting the desired temperature at the same thermo statkopf.
Die Anmeldung verbilligt und vereinfacht alle bisherigen Verfahren. Sie läßt die Möglich keit der Ergänzung und der Kombination mit den bisherigen, zuvor beschriebenen Verfahren und Maßnahmen der modernen Regeltechnik zu. Sie erlaubt eine raum- und personen-individu elle Heizungs-Regelung.Registration is cheaper and simplifies everyone previous procedures. It leaves the possibility ability to complement and combine with the previous methods described above and measures of modern control technology. It allows a room and person individual All heating control.
Claims (22)
- - einem sogen. Dehn-Körper (Dehn-Element), mittels dessen der Funktionszustand des Thermostatventils (AUF . . . ZU) thermostat isch geregelt wird; und der Möglichkeit, dies Dehn-Element zusätz lich und über einen separat zugeführten Stromkreis über ein Heizelement (z. B. und nach dem Stand der Technik üblicherweise ein PTC Kaltleiter) aufzuwärmen, um den GESCHLOSSEN-Zustand dann zu erzwingen, wenn dieser in der in den Ansprüchen, besonders Anspruch 10, beschriebenen Laufwerk-Regelung ansonsten nicht erreicht/gewünscht wird; dieser dann ANTRIEB-unabhängige Zustand kann z. B. bei offenen Fenstern erwünscht, und über einen Fenster-Kontakt initiiert werden.
- - a so-called Expansion body (expansion element), by means of which the functional state of the thermostatic valve (OPEN ... CLOSE) is thermostatically controlled; and the possibility of additionally heating this expansion element and via a separately supplied circuit via a heating element (e.g. and according to the prior art usually a PTC thermistor) in order to force the CLOSED state when it is in the drive control described in the claims, particularly claim 10, is otherwise not achieved / desired; this then DRIVE-independent state can e.g. B. desired with open windows, and initiated via a window contact.
z. B. BLAU = ZU
ROT = AUF.7. Thermostatic head with a coupled DRIVE according to claim 1, characterized in that the respective operating state at a clearly recognizable location for the user at the work unit described here from the thermostatic head and the DRIVE (e.g. on the circumference of the unit, or on a visible end face...) is displayed in color (optically easily perceptible) -
e.g. B. BLUE = CLOSE
RED = OPEN.
- 1) Abgesenkte Temperatur (absolute Tempe ratur im Gerät fest vorgegeben - also vom Nutzer nicht beliebig variierbar);
- 2) Frostschutz-Position;
- 1) Reduced temperature (absolute temperature set in the device - therefore not variable by the user);
- 2) frost protection position;
- - Einfrier-Schutz
- - niedrige Absens-Temperatur im Raum (z. B. 5 Grad)
- - höhere Absens-Temperatur (z. B. 14 Grad C).
- - Freeze protection
- - low absense temperature in the room (e.g. 5 degrees)
- - higher absentee temperature (e.g. 14 degrees C).
Das kann erfolgen mittels eines nach "draußen", also aus dem Gerät herausgeführten Bi-Metall- Mechanismus; oder beispielsweise mittels einer eine Dehnflüssigkeit führende Capillare mit dem (entfernt zu montierenden) Fühler, so daß von dieser Capillar bei Contraktion der Dehnflüssig keit jener AB-Schalt-Vorgang ausgelöst wird.20. Thermostatic head with coupled DRIVE according to claim 1, characterized in that a temperature sensor can be led out of the unit to register the quick-cut-out temperature mentioned in claim 16 even more clearly, quickly and freely, and thus the quick- Turn-off mechanism passes so effectively that the desired quick shutdown is initiated.
This can be done by means of a bimetallic mechanism which is brought out of the device; or, for example, by means of a capillary leading to an expansion fluid with the sensor (to be mounted remotely), so that this AB-switching process is triggered by this capillary when the expansion fluid contracts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4111257A DE4111257A1 (en) | 1991-04-08 | 1991-04-08 | Heater valve thermostat head connected to drive mechanism - incorporates expansion piece with separate circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4111257A DE4111257A1 (en) | 1991-04-08 | 1991-04-08 | Heater valve thermostat head connected to drive mechanism - incorporates expansion piece with separate circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4111257A1 true DE4111257A1 (en) | 1992-10-15 |
Family
ID=6429027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4111257A Withdrawn DE4111257A1 (en) | 1991-04-08 | 1991-04-08 | Heater valve thermostat head connected to drive mechanism - incorporates expansion piece with separate circuit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4111257A1 (en) |
Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1191192B (en) * | 1961-12-12 | 1965-04-15 | Ernst Flitsch | Device for controlling a valve |
DE1600713A1 (en) * | 1967-05-13 | 1970-01-15 | Behr Thomson Dehnstoffregler | Zone valve with adjustment device |
US3711060A (en) * | 1970-10-12 | 1973-01-16 | Itt | Zone control valve assembly |
DE2421810A1 (en) * | 1974-05-06 | 1975-11-20 | Guenter Nadrowski | Thermostatic radiator valve for central heating systems - with automatic temperature reduction during the night |
DE2451346A1 (en) * | 1974-10-29 | 1976-05-06 | Samson Apparatebau Ag | Failsafe temperature operated actuator and valve mechanism - is for control systems and shuts valve off if threshold is exceeded or fault occurs |
US4016901A (en) * | 1975-06-23 | 1977-04-12 | Ogontz Controls Company | Thermostatic valve |
DE2749251A1 (en) * | 1977-11-03 | 1979-05-10 | Danfoss As | ADJUSTABLE HEATING DEVICE FOR SMALL DIMENSIONS, IN PARTICULAR THE EXPANSION DEVICE IN HEAT CONTROL DEVICES |
GB2017263A (en) * | 1978-02-02 | 1979-10-03 | Pont A Mousson | Method and Device for the Additional Control of a Thermostatic Central Heating Valve |
DE2927321A1 (en) * | 1979-07-06 | 1981-01-15 | Manfred Luik | CONTROL DEVICE FOR THE PERIODIC ACTUATION OF A VALVE |
DE3000388A1 (en) * | 1980-01-07 | 1981-07-09 | Manfred 7250 Leonberg Luik | METHOD AND DEVICE FOR IMPROVING A THERMOSTAT |
AT376488B (en) * | 1976-01-16 | 1984-11-26 | Pont A Mousson | ADJUSTING VALVE |
DE3441576A1 (en) * | 1984-11-14 | 1986-05-15 | Wella Ag, 6100 Darmstadt | Electrothermal valve-adjusting drive device with a lockable adjusting member |
DE3020835C2 (en) * | 1980-06-02 | 1986-08-07 | Dieter Gräßlin Feinwerktechnik, 7742 St Georgen | Timer controlled thermostatic valve |
DE3545232A1 (en) * | 1985-12-20 | 1987-07-02 | Suevia Uhrenfabrik Gmbh | Device for time-dependent adjustment of the thermostat control valve of a hot water room radiator |
CH667143A5 (en) * | 1983-03-18 | 1988-09-15 | Schrack Elektronik Ag | RADIATOR VALVE WITH A CONTROL DEVICE FOR CONTROLLING THE ROOM TEMPERATURE. |
CH668108A5 (en) * | 1984-05-03 | 1988-11-30 | Schrack Elektronik Ag | CONTROL VALVE FOR RADIATOR. |
DE3821813C1 (en) * | 1988-06-29 | 1989-11-30 | Theodor Heimeier Metallwerk Kg, 4782 Erwitte, De | Thermostatic valve, especially for heating systems |
DE3905414C1 (en) * | 1989-02-22 | 1989-12-21 | Theodor Heimeier Metallwerk Kg, 4782 Erwitte, De | Heating-installation valve with electric-motor regulating drive |
-
1991
- 1991-04-08 DE DE4111257A patent/DE4111257A1/en not_active Withdrawn
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1191192B (en) * | 1961-12-12 | 1965-04-15 | Ernst Flitsch | Device for controlling a valve |
DE1600713A1 (en) * | 1967-05-13 | 1970-01-15 | Behr Thomson Dehnstoffregler | Zone valve with adjustment device |
US3711060A (en) * | 1970-10-12 | 1973-01-16 | Itt | Zone control valve assembly |
DE2421810A1 (en) * | 1974-05-06 | 1975-11-20 | Guenter Nadrowski | Thermostatic radiator valve for central heating systems - with automatic temperature reduction during the night |
DE2451346A1 (en) * | 1974-10-29 | 1976-05-06 | Samson Apparatebau Ag | Failsafe temperature operated actuator and valve mechanism - is for control systems and shuts valve off if threshold is exceeded or fault occurs |
US4016901A (en) * | 1975-06-23 | 1977-04-12 | Ogontz Controls Company | Thermostatic valve |
AT376488B (en) * | 1976-01-16 | 1984-11-26 | Pont A Mousson | ADJUSTING VALVE |
DE2749251A1 (en) * | 1977-11-03 | 1979-05-10 | Danfoss As | ADJUSTABLE HEATING DEVICE FOR SMALL DIMENSIONS, IN PARTICULAR THE EXPANSION DEVICE IN HEAT CONTROL DEVICES |
GB2017263A (en) * | 1978-02-02 | 1979-10-03 | Pont A Mousson | Method and Device for the Additional Control of a Thermostatic Central Heating Valve |
DE2927321A1 (en) * | 1979-07-06 | 1981-01-15 | Manfred Luik | CONTROL DEVICE FOR THE PERIODIC ACTUATION OF A VALVE |
DE3000388A1 (en) * | 1980-01-07 | 1981-07-09 | Manfred 7250 Leonberg Luik | METHOD AND DEVICE FOR IMPROVING A THERMOSTAT |
DE3020835C2 (en) * | 1980-06-02 | 1986-08-07 | Dieter Gräßlin Feinwerktechnik, 7742 St Georgen | Timer controlled thermostatic valve |
CH667143A5 (en) * | 1983-03-18 | 1988-09-15 | Schrack Elektronik Ag | RADIATOR VALVE WITH A CONTROL DEVICE FOR CONTROLLING THE ROOM TEMPERATURE. |
CH668108A5 (en) * | 1984-05-03 | 1988-11-30 | Schrack Elektronik Ag | CONTROL VALVE FOR RADIATOR. |
DE3441576A1 (en) * | 1984-11-14 | 1986-05-15 | Wella Ag, 6100 Darmstadt | Electrothermal valve-adjusting drive device with a lockable adjusting member |
DE3545232A1 (en) * | 1985-12-20 | 1987-07-02 | Suevia Uhrenfabrik Gmbh | Device for time-dependent adjustment of the thermostat control valve of a hot water room radiator |
DE3821813C1 (en) * | 1988-06-29 | 1989-11-30 | Theodor Heimeier Metallwerk Kg, 4782 Erwitte, De | Thermostatic valve, especially for heating systems |
DE3905414C1 (en) * | 1989-02-22 | 1989-12-21 | Theodor Heimeier Metallwerk Kg, 4782 Erwitte, De | Heating-installation valve with electric-motor regulating drive |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
8139 | Disposal/non-payment of the annual fee |