DE896974C - Thermostat for electrically heated devices, especially for electric ovens and drying cabinets - Google Patents

Thermostat for electrically heated devices, especially for electric ovens and drying cabinets

Info

Publication number
DE896974C
DE896974C DEB11992A DEB0011992A DE896974C DE 896974 C DE896974 C DE 896974C DE B11992 A DEB11992 A DE B11992A DE B0011992 A DEB0011992 A DE B0011992A DE 896974 C DE896974 C DE 896974C
Authority
DE
Germany
Prior art keywords
thermostat
pole
electrically heated
contacts
drying cabinets
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.)
Expired
Application number
DEB11992A
Other languages
German (de)
Inventor
Christian Buerkert
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEB11992A priority Critical patent/DE896974C/en
Application granted granted Critical
Publication of DE896974C publication Critical patent/DE896974C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/04—Combination of a thermally actuated switch with a manually operated switch

Landscapes

  • Control Of Resistance Heating (AREA)

Description

Thermostat für elektrisch beheizte Geräte, insbesondere für elektrische Backöfen und Trockenschränke Die Erfindung beschreibt eine Neuerung an einem Thermostaten, der für Temperaturregelaufgaben verschiedener Art, insbesondere für elektrische Backöfen und Trockenschränke verwendet werden kann.Thermostat for electrically heated devices, in particular for electric ones Ovens and drying cabinets The invention describes an innovation in a thermostat, the one for temperature control tasks of various kinds, especially for electrical ones Ovens and drying cabinets can be used.

Die bekannten Thermostaten werden entweder -in Form eines Stabausdehnungsreglers, eines bimetallisch betätigten Schaltelements oder eines Flüssigkeitsausdehnungssystems in oder an der Ofenmuffel montiert bzw. stehen sie über ein Rohr mit dem Ofeninnern in Verbindung.The known thermostats are either -in the form of a rod expansion controller, a bimetallic actuated switching element or a fluid expansion system mounted in or on the furnace muffle or they are connected to the furnace interior via a pipe in connection.

Aus Sicherheitsgründen und zur Vermeidung elektrolytischer Korrosionen der Heizleiter ist es allgemein üblich, die Heizkörper von elektrisch beheizten Öfen allpolig abzuschalten. Da der eigentliche Regelvorgang mit einem preiswürdigen Gerät meist nur durch Unterbrechung der einen Heizkörperzuleitung durchgeführt werden kann, ist für die allpolige Abschaltung der Heizelemente bei Einstellung des Thermostaten auf »kalt« ein besonderer Schalter notwendig. Es sind auch Konstruktionen bekanntgeworden, bei denen in der Betätigungsachse für den Thermostaten ein Spezialschalter zur Abschaltung des zweiten Pols eingebaut wurde. Die Erfindung vermeidet diese Mängel, indem innerhalb des Thermostaten oder an diesem ein zweiter Kontaktsatz dergestalt angeordnet ist, daB, wenn der Thermostat von Hand auf »kalt« eingestellt wird, über diesen Kontaktsatz der zweite und gegebenenfalls ein dritter Pol der Heiz@körperzuleitung abgeschaltet wird. Da in dieser Stellung -des Thermostaten der Regelkontakt ebenfalls geöffnet ist, ist die Heizwicklung nunmehr nicht nur stromlos, sondern auch spannungslos.For safety reasons and to avoid electrolytic corrosion The heating conductor, it is common practice to electrically heat the radiator Switch off ovens on all poles. Since the actual control process with a price-worthy Device can usually only be carried out by interrupting one of the radiator supply lines is for the all-pole disconnection of the heating elements when the thermostat is set a special switch is required for "cold". Constructions have also become known those in the actuation axis for the thermostat have a special switch for disconnection of the second pole was installed. The invention avoids these shortcomings by keeping within of the thermostat or a second set of contacts is arranged on this, that if the thermostat is set to "cold" by hand, via this contact set the second and, if necessary, a third pole of the heating element supply line is switched off will. Because in this Position of the thermostat, the control contact as well is open, the heating coil is now not only de-energized, but also de-energized.

Wird im umgekehrten Fall der Thermostat aus der Kaltstellung heraus wieder auf einen bestimmten Temperaturwert eingestellt, so schaltet der zusätzliche Kontaktsatz zuerst den zweiten und gegebenenfalls den dritten Pol durch, worauf alsdann bei weiterer Verstellung die Einstellung des eigentlichen Regelkontaktes auf den Sollwert erfolgt und damit der Stromkreis durch die Heizwicklung geschlossen wird.In the opposite case, the thermostat is out of the cold position is set again to a certain temperature value, the additional Contact set first through the second and possibly the third pole, whereupon then with further adjustment the setting of the actual control contact takes place on the setpoint and thus the circuit is closed by the heating coil will.

Die Reihenfolge des Schaltens kann verschieden erfolgen, so daß sowohl der der Regelung dienende Kontaktsatz als auch der zweite Kontakt für den zweiten und gegebenenfalls dritten Pol der Heizkörperzuleitung in beliebiger Reihenfolge geschaltet werden.The order of switching can be done differently, so that both the contact set used for regulation as well as the second contact for the second and optionally the third pole of the radiator lead in any order be switched.

Claims (1)

PATENTANSPRÜCHE: z. Thermostat für elektrisch beheizte Geräte, insbesondere für elektrische Backöfen und Trockenschränke, dadurch gekennzeichnet, daß der in an sich bekannter Weise in oder an der Ofenmuffel angebrachte oder durch ein Rohr mit dieser verbundene Thermostat außer einem Kontaktpaar, das der Regelung dient, einen zweiten Kontaktsatz aufweist, der zusammen mit dem ersten Kontaktsatz bei Handverstellung des Thermostaten auf »kalt« den zweiten und gegebenenfalls einen dritten Pol des nachgeschalteten elektrischen Heizkörpers abschaltet, wodurch dieser vollkommen spannungslos wird, während umgekehrt bei der Verstellung des Thermostaten aus der Kaltstellung heraus sowohl der oder die nicht durch den Regelvorgang gesteuerten Pole als auch der noch verbleibende Pol mittels ,des eigentlichen Regelkontaktes geschaltet werden und dabei der Regler auf die gewünschte Temperatur eingestellt wird. a. Thermostat nach Anspruch r, dadurch gekennzeichnet, daß die Federn des zur Abschaltung verwendeten Kontaktsatzes aus Kupfer-Beryllium bestehen. Angezogene Druckschriften: USA.-Patentschrift Nr. :2486873.PATENT CLAIMS: e.g. Thermostat for electrically heated devices, in particular for electric ovens and drying cabinets, characterized in that the in in a manner known per se in or on the furnace muffle or through a pipe Thermostat connected to this, except for a pair of contacts that are used for regulation, has a second set of contacts, which together with the first set of contacts Manual adjustment of the thermostat to "cold" the second and, if necessary, one third pole of the downstream electric heater switches off, causing this is completely dead, while vice versa when adjusting the thermostat from the cold position both the one or those not controlled by the control process Pole as well as the remaining pole by means of the actual control contact can be switched and the controller is set to the required temperature will. a. Thermostat according to claim r, characterized in that the springs of the The contact set used for disconnection is made of copper beryllium. Dressed References: U.S. Patent No.: 2486873.
DEB11992A 1950-10-15 1950-10-15 Thermostat for electrically heated devices, especially for electric ovens and drying cabinets Expired DE896974C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB11992A DE896974C (en) 1950-10-15 1950-10-15 Thermostat for electrically heated devices, especially for electric ovens and drying cabinets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB11992A DE896974C (en) 1950-10-15 1950-10-15 Thermostat for electrically heated devices, especially for electric ovens and drying cabinets

Publications (1)

Publication Number Publication Date
DE896974C true DE896974C (en) 1953-11-16

Family

ID=6956969

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB11992A Expired DE896974C (en) 1950-10-15 1950-10-15 Thermostat for electrically heated devices, especially for electric ovens and drying cabinets

Country Status (1)

Country Link
DE (1) DE896974C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967465C (en) * 1951-04-19 1957-11-14 Karl Fischer Automatic electrical switching device, especially for heat regulators

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486873A (en) * 1945-01-05 1949-11-01 Gen Motors Corp Domestic appliance

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486873A (en) * 1945-01-05 1949-11-01 Gen Motors Corp Domestic appliance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE967465C (en) * 1951-04-19 1957-11-14 Karl Fischer Automatic electrical switching device, especially for heat regulators

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