Hot well and method of heating
First Claim
1. In a hot well, especially for food;
- an upwardly opening heating vessel of heat conducting material having a bottom, side and end walls, a heating element supported beneath said bottom wall for supplying heat thereto at least partly by radiation, a heat sink of good heat conducting material in the form of a U-shaped metal member having a bottom part beneath said heating element and side parts extending upwardly along and engaging the side walls in heat exchange relation, said U-shaped member receiving heat from said heating element and supplying heat to said walls by conduction, a frame connected to the peripheral region of the top of said vessel and having side walls and end walls extending downwardly along the sides and ends respectively of said vessel in spaced relation thereto, a blanket of heat insulation extending over at least the underside of the bottom part of said U-shaped metal member and upwardly between the side parts thereof and the side walls of said frame, and a bottom cover connected to the bottom of said frame and enclosing said heat insulation from below.
2 Assignments
0 Petitions
Accused Products
Abstract
A hot well, especially for food, and a method of heating the well in which an electric heating element is supported beneath the bottom of the well while a heat sink in the form of a U-shaped member formed of a highly heat conductive metal, such as aluminum, is fitted over the well from below. The U-shaped member has a bottom part beneath the heating element and side parts which are parallel to and in intimate heat exchange relation with the sides of the well. Energization of the heating element directly heats the bottom of the well, principally by radiation directly from the heater and by radiation reflected from the bottom part of the U-shaped member. The bottom part of the U-shaped member also absorbs heat from the heating element and, by conduction upwardly along the side parts of the U-shaped member, heat is also supplied to the sides of the well.
72 Citations
10 Claims
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1. In a hot well, especially for food;
- an upwardly opening heating vessel of heat conducting material having a bottom, side and end walls, a heating element supported beneath said bottom wall for supplying heat thereto at least partly by radiation, a heat sink of good heat conducting material in the form of a U-shaped metal member having a bottom part beneath said heating element and side parts extending upwardly along and engaging the side walls in heat exchange relation, said U-shaped member receiving heat from said heating element and supplying heat to said walls by conduction, a frame connected to the peripheral region of the top of said vessel and having side walls and end walls extending downwardly along the sides and ends respectively of said vessel in spaced relation thereto, a blanket of heat insulation extending over at least the underside of the bottom part of said U-shaped metal member and upwardly between the side parts thereof and the side walls of said frame, and a bottom cover connected to the bottom of said frame and enclosing said heat insulation from below.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. The method of supplying heat to a heating vessel which comprises;
- supporting an electric heating element beneath and parallel to the bottom wall of the vessel, placing a U-shaped member with the bottom part parallel to and beneath the heating element and with the side parts engaging the side walls of the vessel in heat exchange relation therewith, electrically insulating the heating element from the vessel and the U-shaped member, energizing the heating element to supply heat from the heating element to the bottom wall of the vessel principally by direct radiation and by radiation reflected by the bottom part of the U-shaped member and simultaneously supplying heat to the side walls of the vessel by conduction of heat along the side parts of the U-shaped member from the bottom thereof, and thermally insulating the heating vessel and the U-shaped metal member by enclosing the bottom part and side parts of the U-shaped metal member and the bottom wall and the side walls of the heating vessel with a heat insulating blanket.
- View Dependent Claims (10)
Specification