Gas burner assembly

An atmospheric gas water heater comprising:

• a tank containing water to be heated;
• a flue assembly positioned within the tank;
• and
• a burner assembly in fluid communication with the flue assembly, the burner assembly including,
• a burner having a body, and a screen member coupled to the body, the body having a curved surface, and
• a conduit fluidly connected to the body, the conduit having an open end, the open end configured to receive gas and air,
• wherein a flow of the gas and the air from the open end through the conduit to the body and past the screen member is defined as a downstream direction,
• wherein the screen member defines a zone of combustion,
• wherein the gas and the air is 100% premixed together upstream of the zone of combustion,
• wherein during operation, the burner is configured to oscillate at a first vibration frequency,
• wherein during operation, flames produced at the zone of combustion are configured to oscillate at a second vibration frequency, and
• wherein the curved surface of the body is configured to maintain the first vibration frequency at a frequency greater than the second vibration frequency throughout operation of the water heater.

An atmospheric gas water heater comprising:

• a tank containing water to be heated;
• a flue assembly positioned within the tank;
• a combustion chamber fluidly connected to the flue assembly;
• a pilot assembly at least partially positioned within the combustion chamber;
• and
• a burner assembly positioned within the combustion chamber, the burner assembly including,
• a burner having a body, and a screen member coupled to the body, and
• a conduit fluidly connected to the body, the conduit having an open end, the open end configured to receive gas and air,
• wherein a flow of the gas and the air from the open end through the conduit to the body and past the screen member is defined as a downstream direction,
• wherein the screen member defines a zone of combustion,
• wherein the gas and the air is 100% premixed together upstream of the zone of combustion, and
• wherein the pilot assembly is mounted outside of the combustion chamber.