Dental furnace

Patent metadata

Field	Value
Publication number	US-2025230981-A1
Application number	US-202519015055-A
Country	US
Kind code	A1
Filing date	Jan 9, 2025
Priority date	Jan 12, 2024
Publication date	Jul 17, 2025
Grant date	—

Abstract

A dental furnace ( 100 ) having a base plate ( 103 ) for arranging a dental object ( 105 ) to be heated and an inlet opening ( 107 ) for supplying air into the firing chamber ( 109 ) and an outlet opening ( 111 ) for discharging air from the firing chamber ( 109 ), both of which are arranged in the base plate ( 103 ) or a furnace head ( 115 ).

First claim

1 . A dental furnace, comprising:
a base plate for arranging a dental object to be heated; an inlet opening for supplying air into the firing chamber and an outlet opening for discharging air from the firing chamber, both of which are arranged in the base plate or a furnace head.

2 . The dental furnace according to claim 1 ,
wherein the inlet opening and/or the outlet opening is slit-shaped.

3 . The dental furnace according to claim 2 ,
wherein the slit-shaped inlet opening and/or the slit-shaped outlet opening has a length between 35 mm and 45 mm and a width between 0.5 mm and 2 mm.

4 . The dental furnace according to claim 2 ,
wherein the slit-shaped inlet opening and/or the slit-shaped outlet opening is arranged radially to the center of the base plate.

5 . The dental furnace according to claim 4 ,
wherein the slit-shaped inlet opening and the slit-shaped outlet opening are opposite each other with respect to the center of the base plate.

6 . The dental furnace according to claim 1 ,
wherein the inlet opening and/or the outlet opening are configured to guide an air flow around a central region of the base plate.

7 . The dental furnace according to claim 1 ,
wherein the dental furnace comprises a closed furnace head for lowering onto the base plate or a movable base plate.

8 . The dental furnace according to claim 1 ,
wherein the dental furnace comprises several more inlet openings and/or several more outlet openings in the base plate.

9 . The dental furnace according to claim 1 ,
wherein the dental furnace comprises a vacuum pump for generating an air flow through the inlet opening and/or the outlet opening.

10 . The dental furnace according to claim 1 ,
wherein the dental furnace comprises a filter arranged upstream of an inlet valve, an outlet valve and/or a vacuum pump.

11 . A method of operating a dental furnace, comprising the steps of:
arranging a dental object to be heated on a base plate; and discharging air from the firing chamber via an outlet opening and supplying air into the firing chamber via an inlet opening, both of which are arranged in the base plate or a furnace head.

12 . The method according to claim 11 ,
wherein the air is discharged via the outlet opening when the furnace head is open or closed.

13 . The method according to claim 11 ,
wherein the air is discharged by means of a vacuum pump.

14 . The method according to claim 13 ,
wherein the air is supplied when the furnace head is closed.

15 . The method according to claim 11 ,
wherein the air is filtered upstream of an inlet valve, an outlet valve and/or a vacuum pump through a filter.

Assignees

• Ivoclar Vivadent Ag

Inventors

• Beck Gregor
• Jussel Rudolf

Classifications

• F27D2099/0086

  Filters, e.g. for molten metals · CPC title

• F27D2007/066

  Vacuum · CPC title

• F27D99/00

  Subject matter not provided for in other groups of this subclass · CPC title

• F27D7/06

  Forming or maintaining special atmospheres or vacuum within heating chambers (supplying steam, vapour, gases or liquids F27D7/02) · CPC title

• A61C13/083

  Porcelain or ceramic teeth {(A61C13/081 takes precedence; preparations A61K6/80)} · CPC title