Alto-Shaam, Inc.

Alto-Sham, Inc.

Jan Bartelick

William J Hansen

J K Raghavan

Joseph M Kulakowski

Warren Casey

Ted Henderson

Tom Stollenwerk

An oven includes a heat exchanger with flattened segments providing low thermal resistance between flue gases being conveyed through the heat exchanger and a peripheral wall of the heat exchanger to increase the efficiency of heating of the peripheral wall of the heat exchanger to facilitate increasing a temperature of heated air that is delivered by a fan, across an outer surface of the peripheral wall of the heat exchanger, and through a cooking volume of the oven.

Heat exchanger for oven

A grease removal system for a combination oven, requiring venting and condensation of steam, conducts excess grease through the same drainpipe as the steam to a water-filled condenser, then segregates the grease within a reservoir wall. In this way, a single opening may serve to remove both excess steam pressure and grease and temperature-moderated grease may be readily pumped to a convenient location.

Grease handling apparatus for closed system oven

Oven rack

A combination oven for the preparation of food has a cooking chamber containing heating elements, a fan and an atomizer for radiant, convective or steam cooking. The humidity within the cooking chamber is controlled by a water valve and either by forcing dry air into the cooking chamber and venting the humid air or by using a pressure box. Without any moving parts, the pressure box controls air exchange of the cooking chamber according to the level of water within the pressure box and the pressure in the cooking chamber. The oven has a condensate tank to collect condensation drained from the cooking chamber. The pressure box and condensate tanks form water barriers effectively isolating the cooking chamber from the vent and drain during cooking until venting is required.

Humidity control system for combination oven

Growing community of inventors

Germantown, WI, United States of America

Jan Bartelick