CPC F01N 1/24 (2013.01) [F24F 13/24 (2013.01); F24F 2013/242 (2013.01)] | 20 Claims |
1. A water heater comprising:
a blower comprising a gas inlet and an air inlet; and
a noise muffler comprising:
an air intake portion;
an air outlet portion;
a first foam component; and
a second foam component disposed adjacent to the first foam component, wherein the first foam component and the second foam component together are configured to direct air through the noise muffler in three dimensions;
wherein air enters the noise muffler via the air intake portion, and noise exits the noise muffler via the air intake portion; and
wherein the air exits the noise muffler via the air outlet portion, and the noise enters the noise muffler via the air outlet portion.
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