Wire mesh thermal radiative element and use in a radiative oven
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A21B-002/00
F24C-007/04
H05B-003/00
F24C-007/06
F24C-007/08
출원번호
US-0643112
(2015-03-10)
등록번호
US-9500374
(2016-11-22)
발명자
/ 주소
De Luca, Nicholas P.
출원인 / 주소
De Luca Oven Technologies, LLC
대리인 / 주소
Capitol City TechLaw
인용정보
피인용 횟수 :
0인용 특허 :
27
초록▼
A high speed cooking apparatus employing a low voltage high current system for heating foods employing a novel wire mesh heating element. The system herein described providing the benefits of high speed cooking like that further described by U.S. Provisional Application 60/822,028 filed on Aug. 10,
A high speed cooking apparatus employing a low voltage high current system for heating foods employing a novel wire mesh heating element. The system herein described providing the benefits of high speed cooking like that further described by U.S. Provisional Application 60/822,028 filed on Aug. 10, 2006, but yet providing significant cost benefit and simplicity over said system.
대표청구항▼
1. A radiant oven comprising: a heating cavity configured to receive a load to be heated;a heating element having a radiative black body area sized and positioned to heat the load; anda power supply to supply power to the heating element,wherein a ratio of a resistance of the heating element to the
1. A radiant oven comprising: a heating cavity configured to receive a load to be heated;a heating element having a radiative black body area sized and positioned to heat the load; anda power supply to supply power to the heating element,wherein a ratio of a resistance of the heating element to the radiative black body area of the heating element is less than 2 ohms/m2 and the heating element is capable of reaching about 1400 Kelvin from room temperature in less than 10.3 seconds. 2. The radiant oven of claim 1, wherein the radiative black body area is over 0.25 m2. 3. The radiant oven of claim 1, wherein the ratio is approximately 0.1137 ohms/m2. 4. The radiant oven of claim 1, wherein the heating element comprises a wire. 5. The radiant oven of claim 1, wherein the heating element has a specific heat capacity of less than 0.36 KWH of energy for raising the temperature of the heat element from room temperature to about 1400° K, wherein an equation relating a heat energy to the specific heat capacity, where the unit quantity is in terms of mass is: ΔQ=mcΔT where ΔQ is the heat energy put into or taken out of the element (where P×time=ΔQ), m is the mass of the element, c is the specific heat capacity, and ΔT is the temperature differential where the initial temperature is subtracted from the final temperature. 6. The radiant oven of claim 1, further comprising a relay for cycling the power to the heating element, and a control circuit for controlling the relay. 7. The radiant oven of claim 1, wherein the radiative black body area of the heating element is movable relative to the load. 8. The radiant oven of claim 1, wherein a distance between the load and the radiative black body area of the heater is not less than one half of an inch. 9. The radiant oven of claim 1, further comprising a tray configured to support the load, the tray being movably attached to a chassis of the radiant oven for adjusting the distance of the tray from the radiative black body area of the heating element. 10. The radiant oven of claim 1, further comprising an oven door and a reflector disposed on or in the oven door for reflecting radiation. 11. The radiant oven of claim 1, wherein the heating element comprises multiple heating elements, the multiple heating elements share a first bus and a second bus, the first bus is in electrical communication with a positive voltage of the power supply and the second bus is in electrical communication with a negative voltage of the power supply. 12. The radiant oven of claim 1, further comprising a control circuit configured to monitor a condition of the load by measuring one or more of: a color of the load, a moisture level of a surface of the load, and a moisture level of air in the oven. 13. The radiant oven of claim 1, wherein the power supply supplies a DC voltage to the heating element. 14. The radiant oven of claim 12, wherein the DC voltage is less than 24 Volts. 15. The radiant oven of claim 1, wherein the power supply comprises a low voltage high current system. 16. The radiant oven of claim 1, wherein the heating element has a combined resistance of less than 10 ohms. 17. The radiant oven of claim 1, wherein the heating element comprises a wire having a thickness less than or equal to 1 mm. 18. The radiant oven of claim 1, wherein the heating element comprises a wire mesh cloth. 19. A heating method comprising: heating a cavity configured for receiving a load using a heating element sized and positioned to heat the load; anddischarging current from a power supply through the heating element,wherein a ratio of a resistance of the heating element to the radiative black body area of the heating element is less than 2 ohms/m2 and the heating element is capable of reaching about 1400 Kelvin from room temperature in less than 10.3 seconds. 20. The heating method of claim 19, wherein the radiative black body area is over 0.25 m2. 21. The heating method of claim 19, wherein the ratio is approximately 0.1137 ohms/m2. 22. The heating method of claim 19, wherein the heating element has a specific heat capacity of less than 0.36 KWH of energy for raising the temperature of the heat element from room temperature to about 1400° K, wherein an equation relating a heat energy to the specific heat capacity, where the unit quantity is in terms of mass is: ΔQ=mcΔT where ΔQ is the heat energy put into or taken out of the element (where P×time=ΔQ), m is the mass of the element, c is the specific heat capacity, and ΔT is the temperature differential where the initial temperature is subtracted from the final temperature. 23. The heating method of claim 19, further comprising cycling the power to the heating element. 24. The heating method of claim 19, further comprising moving the radiative black body area of the heating element relative to the load. 25. The heating method of claim 19, further comprising monitoring a condition of the load by measuring one or more of: a color of the load, a moisture level of a surface of the load, and a moisture level of air in the oven. 26. The heating method of claim 19, wherein the power supply comprises a low voltage high current system. 27. The heating method of claim 19, wherein the heating element has a combined resistance of less than 10 ohms. 28. The heating method of claim 19, wherein the heating element comprises a wire having a thickness less than or equal to 1 mm.
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