Rapid roasting oven with movable heating elements

Details Rapid roasting oven with movable heating elements Rapid roasting oven with movable heating elements

2000-03-30

2001-06-05

Pelham, Joseph (Department: 3742)

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

C219S405000

Reexamination Certificate

active

06242716

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a food processing facility, and more specifically to a rapid roasting oven.
BACKGROUND OF INVENTION
The roasting ovens commonly used and available in the market are fitted with stationary heating elements. For the convenience of roasting bulky pieces of food, the roasting rack is usually located on the bottom of the housing of the oven. However, the heating elements are far from the rack, the thermal efficiency is low and the power consumption is high.
SUMMARY OF THE INVENTION
Therefore, the object of the present invention is to provide a rapid roasting oven with movable heating elements. The oven is capable of controlling the distribution of the temperature and the roasting space by using a plurality of movable heating elements, thereby speeding up the heating, shortening the roasting time and increasing the thermal efficiency.
The rapid roasting oven with movable heating elements according to the present invention comprises a housing, a timer, a reflecting plate and at least one heating element mounted on the reflecting plate, wherein a travel mechanism is set in the housing, and the reflecting plate coupled with the travel mechanism can move up and down vertically in relation with the housing.
In one aspect of the invention, the travel mechanism is composed of a parallel four-bar linkage, a slidercrank device, and a tension spring, wherein one end of the parallel four-bar linkage is pivotally connected with one end of the reflecting plate, while the other end of the parallel four-bar linkage and one end of the slidercrank device are pivotally connected with a side wall of the housing, while the other end of the slidercrank device is mounted on the other side of the housing.
In another aspect of the invention, the travel mechanism is composed of a rocking arm, a pair of hopper chutes, a supporting shoe, a slidercrank device and a tension spring, wherein the hopper chutes are arranged along both side walls of the housing, the ends of the reflecting plate are fitted with the hopper chutes so that the reflecting plate can move up and down along the hopper chutes and, one end of the rocking arm is pivotally connected with the reflecting plate, while the other end is pivotally connected with the supporting shoe secured in the housing.
The rapid roasting oven according to the present invention makes it possible to control the distribution of the temperature as well as the roasting space, and thereby increases the heating velocity and the thermal efficiency, by using a plurality of movable heating elements. The cooking time of the invention is shorter than that of the conventional oven of the same power.


REFERENCES:
patent: 2984730 (1961-05-01), Ostrom et al.
patent: 3281575 (1966-10-01), Ferguson
patent: 5693246 (1997-12-01), Han et al.
patent: 5938959 (1999-08-01), Wang
patent: 6091057 (2000-07-01), Asami et al.

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