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US4113439A
Expired / Lapsed
US
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Cooking apparatus employing a purging device
Assignee: Panasonic Holdings Corp
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Filing: 1976-09-08
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Granted: 1978-09-12
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Expires: 1996-09-08
Abstract
Abstract A cooking apparatus employing a purging device. In the apparatus, an exhaust gas which is produced from food being cooked in a cooking chamber is passed through the purging device and is exhausted to the exterior of the chamber at a temperature of 130° C or at a discharge rate of higher than 0.5 m/sec thereby being purged sufficiently.
Inventors
- 👤 Toshio Ookubo
- 👤 Atsushi Nishino
- 👤 Tadashi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:55
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2007; F24C15/2014; F24C15/02; F24C15/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
A cooking apparatus having a cooking chamber for cooking a food and a purging device for receiving the exhaust gas from the cooking chamber and purging the gas, said purging device having a housing with an exhaust inlet for receiving the exhaust gas from the cooking chamber and admitting it into the housing and an exhaust outlet for exhausting the gas into the outside of the apparatus, and at least one catalyzer arranged transversely of the housing and having passages therein through which the gas is passed for purifying it, said catalyzer having a specific surface area of 10 m 2 /g to 100 m 2 /g, and being composed of manganese dioxide as the main component and aluminic acid lime as a binder, and means for maintaining the temperature of the gas at the outlet of said housing higher than 130° C and wherein the inside condition of the apparatus is controlled so that the space velocity is 1,000 - 50,000 hr -1 .
Claim 2
Dependent Claim
165 words
A cooking apparatus having a cooking chamber for cooking a food and a purging device for receiving the exhaust gas from the cooking chamber and purging the gas, said purging device having a housing with an exhaust inlet for receiving the exhaust gas from the cooking chamber and admitting it into the housing and an exhaust outlet for exhausting the gas into the outside of the apparatus, and at least one catalyzer arranged transversely of the housing and having passages therein through which the gas is passed for purifying it, said catalyzer having a specific surface area of 10 m 2 /g to 100 m 2 /g, and being composed of manganese dioxide as the main component and aluminic acid lime as a binder, and means for maintaining the temperature of the gas at the outlet of said housing higher than 130° C and wherein the inside condition of the apparatus is controlled so that the space velocity is 1,000 - 50,000 hr -1 .
Claim 3
Dependent Claim
165 words
A cooking apparatus having a cooking chamber for cooking a food and a purging device for receiving the exhaust gas from the cooking chamber and purging the gas, said purging device having a housing with an exhaust inlet for receiving the exhaust gas from the cooking chamber and admitting it into the housing and an exhaust outlet for exhausting the gas into the outside of the apparatus, and at least one catalyzer arranged transversely of the housing and having passages therein through which the gas is passed for purifying it, said catalyzer having a specific surface area of 10 m 2 /g to 100 m 2 /g, and being composed of manganese dioxide as the main component and aluminic acid lime as a binder, and means for maintaining the discharge rate of the gas at the outlet of said housing higher than 0.5 m/sec. and wherein the inside condition of the apparatus is controlled so that the space velocity is 1,000 -50,000 hr -1 .
Claim 4
Dependent Claim
165 words
A cooking apparatus having a cooking chamber for cooking a food and a purging device for receiving the exhaust gas from the cooking chamber and purging the gas, said purging device having a housing with an exhaust inlet for receiving the exhaust gas from the cooking chamber and admitting it into the housing and an exhaust outlet for exhausting the gas into the outside of the apparatus, and at least one catalyzer arranged transversely of the housing and having passages therein through which the gas is passed for purifying it, said catalyzer having a specific surface area of 10 m 2 /g to 100 m 2 /g, and being composed of manganese dioxide as the main component and aluminic acid lime as a binder, and means for maintaining the discharge rate of the gas at the outlet of said housing higher than 0.5 m/sec. and wherein the inside condition of the apparatus is controlled so that the space velocity is 1,000 -50,000 hr -1 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |