SINGLE-PIECE REFRACTORY FOR A WATER HEATING ASSEMBLY
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United States of America
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Issued Date -
Dec 30, 2021
app pub date -
Jun 24, 2020
filing date -
Jun 24, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
The disclosed technology includes a water heater system having a blower, an igniter, a burner, a heat exchanger, and a refractory configured to attach to the burner and the heat exchanger. The refractory can include a unitary ceramic housing having a top and a plurality of sidewalls and be configured to retain heat from combustion gases. The top can have a burner aperture configured to receive at least a portion of the burner and the plurality of sidewalls can form a cavity configured to receive at least a portion of the heat exchanger. One or more of the sidewalls can additionally have a protrusion extending laterally along an inside surface of the sidewall that is configured to contact the heat exchanger to form a seal between the heat exchanger and the refractory. A sealing material can substantially create a seal between the refractory and the heat exchanger.
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