Abstract A pressure release port for a walk-in freezer or the like formed by an aperture extending through a wall of the freezer adjacent the walk-in door thereof. The aperture permits air flow between the atmosphere and the freezer interior to avoid the development of any pressure differential. An electric light bulb is mounted in the aperture to create heat in the aperture to minimize accumulation of moisture and frost from the air flowing through the aperture. Air filters are mounted on each surface of the freezer wall and extend across the aperture with the light bulb therebetween. The filters serve to clean the air and to provide resistance to the free flow of air through the aperture, thereby enhancing the heating effect of the light bulb. Each air filter is slidably mounted in an open-ended frame secured to the freezer wall surface to permit cleaning and replacement removal of the filters and to allow access to the light bulb.
A pressure release port for a walk-in freezer or the like comprising an aperture extending through a wall of said freezer, an electric light bulb mounted in said aperture, means for energizing said light bulb to create heat in said aperture for minimizing moisture and frost accumulation in said aperture, an air filter extending across said aperture to clean air passing through said aperture and to provide resistance to the free flow of air therethrough, thereby enhancing the heating effect of said light bulb therein.
Claim 2
Dependent Claim
85 words
A pressure release port for a walk-in freezer or the like comprising an aperture extending through a wall of said freezer, an electric light bulb mounted in said aperture, means for energizing said light bulb to create heat in said aperture for minimizing moisture and frost accumulation in said aperture, an air filter extending across said aperture to clean air passing through said aperture and to provide resistance to the free flow of air therethrough, thereby enhancing the heating effect of said light bulb therein.
Claim 3
Dependent Claim
34 words
A pressure release port for a walk-in freezer or the like according to claim 1 and characterized further in that said air filter is disposed across said aperture on one surface of said wall.
Claim 4
Dependent Claim
40 words
A pressure release port for a walk-in freezer or the like according to claim 2 and characterized further by another air filter extending across said aperture on the opposite surface of said wall with said light bulb between said filters.
Claim 5
Dependent Claim
50 words
A pressures release port for a walk-in freezer or the like according to claim 2 and characterized further in that said air filter is slidably mounted in an open-ended frame secured to said wall surface to permit cleaning and replacement removal of said filter and access to said light bulb.
Claim 6
Dependent Claim
40 words
A pressure release port for a walk-in freezer or the like according to claim 1 and characterized further in that said freezer has a door in a wall thereof and said aperture is disposed in said wall adjacent the door.