Dental furnace
AssigneeIvoclar Vivadent AG
InventorsRudolf Jussel, Philipp Kettner
Life of this patent
Estimating the term…
Abstract
This invention relates to a device for drying at least one object containing a liquid, in particular a dental restoration object (12). Said device comprises a means for generating thermal energy acting upon the object and sufficient for increasing the temperature of the object to the boiling point. Moreover, the device includes an impingement area for impinging on the object with thermal energy and a control device (24) that is characterized by the fact that a temperature detection element (20) of the device (10) measures the temperature of the object (12), and upon reaching a trigger temperature that is at the boiling temperature, somewhat below or somewhat above thereof, emits a signal to the control device.
Claims22
A device for drying a dental object containing a liquid, said device comprising
- a drying cabinet, curing lamp, or firing furnace comprising a thermal energy source configured for generating thermal energy at a constant rate throughout the drying of the dental object and for increasing the temperature of the liquid in the dental object to a boiling point,
- an impingement area for impinging on the dental object with the thermal energy,
- a control circuit configured to detect a temperature plateau and control the thermal energy source to supply thermal energy at a constant rate during a drying process, and
- a temperature sensor in communication with the control circuit to measure the temperature of the dental object and detect the temperature plateau whereby no further increase in the temperature of the dental object is detected despite the constant rate of the thermal energy, wherein the temperature plateau is no higher than 500° C., upon reaching the temperature plateau, the control circuit emits a signal to the drying cabinet, curing lamp, or firing furnace, and the drying is stopped.
A dental furnace comprising
- a firing chamber having a thermal energy source configured for acting upon a dental object and generating thermal energy at a constant rate throughout a drying process of the dental object and for increasing a temperature of the liquid in the dental object to a boiling point,
- an impingement area for impinging on the dental object with the thermal energy,
- a control circuit configured to detect a temperature plateau and control the thermal energy source to provide thermal energy at the constant rate during the drying process, and
- a temperature sensor in communication with the control circuit to measure the temperature of the dental object and detect the temperature plateau whereby no further increase in temperature of the dental object is detected despite the thermal energy supplied at the constant rate, wherein the temperature plateau is no higher than 500° C., and upon reaching the temperature plateau, the control circuit emits a signal to indicate drying is complete, and the drying is stopped.
Dependencies are inferred from the claim text.