Furnace having vertical arrangement of the combustion chamber for dental components and heat-resistant base

Patent metadata

Field	Value
Publication number	US-11073334-B2
Application number	US-201716077516-A
Country	US
Kind code	B2
Filing date	Feb 22, 2017
Priority date	Feb 22, 2016
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

The invention relates to a furnace having a vertical orientation for dental components, comprising a combustion chamber, which is open at the bottom and the opening of which can be closed by means of a furnace door, which is lowered in the vertical direction in the open position, and comprising a depositing region for the heated component, which depositing region is arranged at a distance from the opening in the combustion chamber. The depositing region is part of the furnace, and a cooling device that acts on the depositing region is arranged on or in the furnace. A heat-resistant base has a heat-resistant support arranged in a housing, which support has an active or passive cooling device, which, for example, has a Peltier element.

First claim

The invention claimed is:

1. Furnace having a vertical orientation for heating at least one dental component, comprising a combustion chamber, which is open at the bottom, and the opening of which can be closed by means of a furnace door, which is lowered in the vertical direction in the open position, and comprising a depositing region for a heated component, which depositing region is arranged at a distance from the opening in the combustion chamber, wherein the depositing region is part of the furnace, and a cooling device that acts on the depositing region is arranged on or in the furnace,
wherein the depositing region comprises a heat-resistant support for the heated component and that the cooling device acts on the support, and
wherein the support (i) comprises ventilation openings, by means of which a cooling air flow is guided onto the heated component to be arranged in the depositing region on the support or (ii) is cooled with the aid of a Peltier element, which is thermally coupled directly to the support.

2. Furnace according to claim 1 , wherein when the support region comprises ventilation openings, the ventilation openings are fluidically connected to a fan to provide a cooling air flow.

3. Furnace according to claim 2 , wherein when the support region comprises ventilation openings an air-permeable, heat-insulating insert part is arranged between the fan and the support.

4. Furnace according to claim 1 , wherein the depositing region is arranged outside a thermal radiation field of the open combustion chamber.

5. Furnace according to claim 1 , wherein the furnace comprises two furnace doors, of which one furnace door is brought into a cooling position after the opening of the combustion chamber has been cleared, while the other furnace door closes the combustion chamber in the closed position.

6. Furnace according to claim 1 , further comprising a device for automatically repositioning the heated component from the open combustion chamber into the depositing region.

7. Furnace according to claim 6 , wherein the device for automatically repositioning the heated component comprises a gripper arm or a robot arm.

8. Furnace according to claim 6 , wherein the device for automatically repositioning the heated component comprises a tappet, a chute and a collecting basket.

9. Furnace according to claim 1 , wherein the depositing region or the support comprises means for temperature measurement in the depositing region or the support or the component to be cooled.

10. Furnace according to claim 9 , wherein comparison means and display means are provided, to compare the temperature of the component to be cooled to a predetermined limit temperature and to display said temperature when the limit temperature is reached.

11. Furnace according to claim 9 , wherein, with the aid of a control unit, the cooling device provides a cooling output which is dependent on the signal of the means for temperature measurement.

12. Furnace according to claim 1 , wherein a plurality of supports having a plurality of cooling devices are provided in a housing.

13. Furnace according to claim 12 , wherein the cooling output of each support is individually controllable.

14. Furnace according to claim 1 , wherein the cooling device is arranged at a distance from the depositing region in a housing section, past which the component is moved when the component is brought out of the combustion chamber.

Assignees

• Dentsply Sirona Inc

Inventors

• Jumpertz Rainer

Classifications

• F27D15/02

  Cooling · CPC title

• F27B17/025 Primary

  for dental workpieces · CPC title