DE2635590B1 - Method for determining the mean muffle temperature of electric cookers equipped with a temperature switch after their assembly - Google Patents
Method for determining the mean muffle temperature of electric cookers equipped with a temperature switch after their assemblyInfo
- Publication number
- DE2635590B1 DE2635590B1 DE19762635590 DE2635590A DE2635590B1 DE 2635590 B1 DE2635590 B1 DE 2635590B1 DE 19762635590 DE19762635590 DE 19762635590 DE 2635590 A DE2635590 A DE 2635590A DE 2635590 B1 DE2635590 B1 DE 2635590B1
- Authority
- DE
- Germany
- Prior art keywords
- temperature
- muffle
- stove
- mean
- conveyor belt
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
- G01K3/04—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values in respect of time
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
- Control Of Resistance Heating (AREA)
Description
Wie aus Fig. 2 ersichtlich, befinden sich auf einem laufenden Transportband 20, das sich in Pfeilrichtung bewegt, eine Anzahl von Herden 1, die über ebenfalls auf dem Band 20 vorhandene Netzanschlüsse 21 in Betrieb setzbar sind. Jedem Herd 1 ist eine Meßeinrichtung 13 nach der Fig. 1 zugeordnet. As can be seen from Fig. 2, are on a moving conveyor belt 20, which moves in the direction of the arrow, a number of flocks 1, which also have on the belt 20 existing network connections 21 in Operation settable are. A measuring device 13 according to FIG. 1 is assigned to each stove 1.
Es sei angenommen, daß jeder Herd 1 beim Passieren des Ortes A in Betrieb gesetzt und mit dem Thermofühler 3 versehen ist. Kommt ein Herd zum Ort B, so ist so viel Zeit Vergangen (etwa 10 min), daß der Herd auf die durch die Handhabe 9 vorgegebene Soll-Temperatur aufgeheizt und somit der Schaltkontakt 7 des Temperaturreglerstabes 6 (Fig. 1) das erste Mal abschaltet, so daß die Aufheizung der Muffel 2 unterbrochen ist. Wie vorstehend beschrieben, wird damit der Momentanwert des Thermofühlers 3 abgetastet und gespeichert und von der Meßeinrichtung 13 als Frequenz E,ausgesendet. It is assumed that each hearth 1 when passing the location A in Operation is set and the thermal sensor 3 is provided. A stove comes to the place B, so much time has passed (about 10 minutes) that the stove is opened by the handle 9 pre-set target temperature and thus the switching contact 7 of the temperature control rod 6 (Fig. 1) switches off the first time, so that the heating of the muffle 2 is interrupted is. As described above, the instantaneous value of the thermal sensor 3 scanned and stored and sent out by the measuring device 13 as frequency E.
Am Ort C ist am Transportband 20 eine Einrichtung 22 angeordnet, die aus einer Empfangsspule 23, einem Frequenzmesser 24 und einem von diesem angesteuerten Drucker 25 besteht. At location C, a device 22 is arranged on the conveyor belt 20, from a receiving coil 23, a frequency meter 24 and one controlled by this Printer 25 exists.
Passiert nun der Herd mit der zugeordneten Meßeinrichtung 13 den Bereich des Ortes C so wird die ausgestrahlte Frequenz fm der Meßeinrichtung 13 von der Empfangsspule 23 des Frequenzmessers 24 erfaßt. Now passes the stove with the associated measuring device 13 the In the area of the location C so, the emitted frequency fm of the measuring device 13 detected by the receiving coil 23 of the frequency meter 24.
Diesem empfangenen Frequenzwert kann ein für den Herd typischer Korrekturwert hinzugefügt werden, so daß verschiedene Einflußgrößen des Herdes, wie beispielsweise Variation der thermischen Rückführung, Nebenluft, Wärmeabfuhr, Wärmeisolation berücksichtigt sind. A correction value typical for the stove can be added to this received frequency value can be added, so that various influencing variables of the stove, such as Variation of thermal feedback, secondary air, heat dissipation, heat insulation taken into account are.
Der vom Drucker 25 ausgegebene Meßwert gibt zweckmäßig gleich den mittleren Temperaturwert an. The measured value output by printer 25 is expediently equal to mean temperature value.
Wie aus der Fig. 3 ersichtlich, schwankt nach einer zwischen den Zeitpunkten to bis 4 liegenden Anheizphase die Muffeltemperatur um einen Mittelwert TMM; um diese Temperatur relativ genau zu messen, wurde ein thermisch träger Thermofühler mit einem Temperaturgang d verwendet, der nach etwa 30min auf die Muffeltemperatur aufgeheizt ist; erst dann kann der Mittelwert der Muffeltemperatur gemessen werden. As can be seen from FIG. 3, after a fluctuates between the At times t to 4, the heating phase increases the muffle temperature by an average value TMM; In order to measure this temperature relatively precisely, a thermally inert thermal sensor was used with a temperature drift d that reaches the muffle temperature after about 30 minutes is heated up; only then can the mean value of the muffle temperature be measured.
Wie aus dem Diagramm ersichtlich, wird jedoch bereits nach etwa 10 min zum Zeitpunkt t die vorgegebene Muffeltemperatur erreicht. As can be seen from the diagram, however, after about 10 min reached the specified muffle temperature at time t.
Für die Bestimmung der mittleren Muffeltemperatur wird nun die erste vom Temperaturreglerstab ausgelöste Abschaltung der Heizung zum Zeitpunkt ti herangezogen; die Muffeltemperatur liegt zu diesem Zeitpunkt in Nähe der mittleren Temperatur TMM, beispielsweise oberhalb der mittleren Temperatur bei TMA. Diese Abweichung beinhaltet einen bestimmten Betrag d 7; der sich aus der Konstruktion des Herdes ergibt und für einen bestimmten Herdtyp konstant ist und nur einmal festgestellt und im gemessenen Temperaturwert TMA berücksichtigt werden muß, um zur mittleren Muffeltemperatur TMM zu gelangen; der Betrag ist von Herdtyp zu Herdtyp unterschiedlich. The first the shutdown of the heating triggered by the temperature control rod at time ti is used; the muffle temperature at this point in time is close to the mean temperature TMM, for example above the mean temperature for TMA. This deviation includes a certain amount d 7; resulting from the construction of the stove results and is constant for a certain type of hearth and only determined once and must be taken into account in the measured temperature value TMA in order to achieve the mean To reach muffle temperature TMM; the amount varies from stove type to stove type.
Die ermittelte mittlere Muffeltemperatur darf in bestimmten Grenzen von der vorgegebenen Soll-Temperatur abweichen. Etwa notwendige Korrekturen können durch Justage des Schaltkontaktes 7 erfolgen, wodurch der Reglerstab-Schaltpunkt entsprechend verändert wird The determined mean muffle temperature may be within certain limits deviate from the specified target temperature. Any necessary corrections can be made done by adjusting the switch contact 7, whereby the controller rod switch point is changed accordingly
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762635590 DE2635590C2 (en) | 1976-08-07 | 1976-08-07 | Method for determining the mean muffle temperature of electric cookers equipped with a temperature switch after their installation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762635590 DE2635590C2 (en) | 1976-08-07 | 1976-08-07 | Method for determining the mean muffle temperature of electric cookers equipped with a temperature switch after their installation |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2635590B1 true DE2635590B1 (en) | 1977-08-11 |
DE2635590C2 DE2635590C2 (en) | 1978-04-06 |
Family
ID=5984945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19762635590 Expired DE2635590C2 (en) | 1976-08-07 | 1976-08-07 | Method for determining the mean muffle temperature of electric cookers equipped with a temperature switch after their installation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2635590C2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0596263A1 (en) * | 1992-11-06 | 1994-05-11 | Bosch-Siemens HausgerÀ¤te GmbH | Cooking oven |
DE4323919A1 (en) * | 1993-07-16 | 1995-01-19 | Licentia Gmbh | Method for calibration of the core temperature in the oven muffle of an electrical baking and roasting oven |
-
1976
- 1976-08-07 DE DE19762635590 patent/DE2635590C2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0596263A1 (en) * | 1992-11-06 | 1994-05-11 | Bosch-Siemens HausgerÀ¤te GmbH | Cooking oven |
DE4323919A1 (en) * | 1993-07-16 | 1995-01-19 | Licentia Gmbh | Method for calibration of the core temperature in the oven muffle of an electrical baking and roasting oven |
Also Published As
Publication number | Publication date |
---|---|
DE2635590C2 (en) | 1978-04-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8339 | Ceased/non-payment of the annual fee |