Convection oven with linear counter-flow heat exchanger
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United States of America Patent
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Jun 11, 2019
Grant Date -
Aug 4, 2016
app pub date -
Feb 1, 2016
filing date -
Feb 3, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A convection oven includes a cooking chamber for cooking a food product, an air circulator that circulates process air in a first direction through the cooking chamber and along a circulation path in a circulation passage. A heat exchanger includes one or more heat transfer ducts longitudinally arranged along the circulation path. One or more heating elements heat a fluid that is circulated in a second direction through the one or more heat transfer ducts which is opposite to the first direction. The process air absorbs heat from the heated fluid as the process air travels along the circulation path back to the cooking chamber. A partition wall may separate first and second parallel portions of the one or more heat transfer ducts. A heat exchanger may preheat fluid entering the one or more heat transfer ducts using heated fluid leaving the heat transfer ducts.
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