Dental furnace
US-2017363354-A1 · Dec 21, 2017 · US
Video-device-equipped electric furnace
US2024118032A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024118032-A1 |
| Application number | US-202218263933-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 27, 2022 |
| Priority date | Feb 10, 2021 |
| Publication date | Apr 11, 2024 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
To directly and clearly observe the state inside a melting chamber in an electric furnace, a video-device-equipped electric furnace comprises: a melting chamber; a preheating chamber; and a video device to observe an inside of the melting chamber. The video device includes: a relay lens; an inner tube containing the relay lens and having an outer diameter of 100 mm or less; an outer tube containing the inner tube; and an imaging device located at an axial end of the relay lens on a furnace outside. The video device is provided through a hole in a furnace wall or lid so that the relay lens is located 300 mm to 3500 mm away from a highest molten iron interface in a vertically upward direction and the imaging device is located 300 mm or more away from an inner wall of the furnace wall or lid in a furnace outward direction.
First claim
Opening claim text (preview).
1 . A video-device-equipped electric furnace comprising: a melting chamber configured to melt a cold iron source by arc heat to obtain molten iron; a preheating chamber configured to preheat the cold iron source to be supplied to the melting chamber; and a video device configured to observe an inside of the melting chamber, wherein the video device includes: a relay lens made up of a plurality of lenses; an inner tube containing the relay lens and having an outer diameter of 100 mm or less; an outer tube containing the inner tube; and an imaging device located at an axial end of the relay lens on a furnace outside, and the video device is provided through a hole in a furnace wall or a furnace lid defining the melting chamber so that the relay lens is located 300 mm or more and 3500 mm or less away from a highest molten iron interface in a vertically upward direction and the imaging device is located 300 mm or more away from an inner wall of the furnace wall or the furnace lid in a furnace outward direction. 2 . The video-device-equipped electric furnace according to claim 1 , comprising a gas supply device configured to supply a gas between the inner tube and the outer tube at a flow rate of 50 NL/min or more and 250 NL/min or less.
Assignees
Inventors
Classifications
- F27D21/02Primary
Observation or illuminating devices · CPC title
Arc furnaces · CPC title
using a video installation · CPC title
- C21C5/52Primary
Manufacture of steel in electric furnaces {(C21C5/005 takes precedence)} · CPC title
- F27B3/28Primary
Arrangement of controlling, monitoring, alarm or the like devices · CPC title
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- What does patent US2024118032A1 cover?
- To directly and clearly observe the state inside a melting chamber in an electric furnace, a video-device-equipped electric furnace comprises: a melting chamber; a preheating chamber; and a video device to observe an inside of the melting chamber. The video device includes: a relay lens; an inner tube containing the relay lens and having an outer diameter of 100 mm or less; an outer tube contai…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification F27D21/02. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Apr 11 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).