An oven appliance with features for dissipating pressure increases in the cooking chamber of the oven without forcing open the oven door is provided. Such features include a flame arrester that dissipates pressure increases and quenches flames from the cooking chamber of an oven appliance.

Disclosed is a particle heating landscape furnace, which includes a combustion device. The combustion device includes a vertically arranged cover pipe, a grid and a combustion assembly. The combustion assembly has a feed chamber, a flame outlet and a flame outlet opposite to the flame outlet. A feed chamber is arranged obliquely, the flame outlet and the discharge port are both connected with the feed chamber, and the cover pipe is arranged on a periphery of the flame outlet, the grid is arranged on an outer side of the discharge port.

Disclosed is a particle heating landscape furnace, which includes a combustion device. The combustion device includes a vertically arranged cover pipe, a grid and a combustion assembly. The combustion assembly has a feed chamber, a flame outlet and a flame outlet opposite to the flame outlet. A feed chamber is arranged obliquely, the flame outlet and the discharge port are both connected with the feed chamber, and the cover pipe is arranged on a periphery of the flame outlet, the grid is arranged on an outer side of the discharge port.

A gas furnace with a flame arrestor may be used for arresting a potential flame caused by ignition of refrigerant in gas furnaces. The flame arrestor may be attached to a housing of the gas furnace. The flame arrestor may include a plurality of holes configured to arrest a flame propagating out of an air intake pipe of the gas furnace.

A gas furnace with a flame arrestor may be used for arresting a potential flame caused by ignition of refrigerant in gas furnaces. The flame arrestor may be attached to a housing of the gas furnace. The flame arrestor may include a plurality of holes configured to arrest a flame propagating out of an air intake pipe of the gas furnace.