Abstract A quick acting air heater comprises a cylindrical shell and a perforated plate secured to one end of the shell. A solid cylindrical core member is coaxially disposed within the shell, adjustable means being provided for holding it in position relative to the shell. The core member is provided with air passages extending longitudinally and radially inward from its periphery. One or more electrical heaters are embedded in the core displaced from the slots. Means are provided for directing air from a source outside the shell longitudinally through the slots. This provides a highly sensitive heater which is quickly responsive to high temperature requirements. An important feature resides in the fact that no air space exists between the heater and the slots to insulate or retard the flow of heat to the slots.
An air heater comprising a cylindrical shell, a perforated plate at one end of the shell, a solid cylindrical core member coaxially disposed within said shell, said core member having longitudinal air passages in the form of relatively thin radial slots, an electrical heater embedded in said core displaced from said radial slots, means for directing air from an outside source into the said shell through said passages in the direction of the perforated plate, and adjustable means for supporting the lateral surface of the core in coaxial spaced relation to the inner wall surface of the shell.
Claim 2
Dependent Claim
98 words
An air heater comprising a cylindrical shell, a perforated plate at one end of the shell, a solid cylindrical core member coaxially disposed within said shell, said core member having longitudinal air passages in the form of relatively thin radial slots, an electrical heater embedded in said core displaced from said radial slots, means for directing air from an outside source into the said shell through said passages in the direction of the perforated plate, and adjustable means for supporting the lateral surface of the core in coaxial spaced relation to the inner wall surface of the shell.
Claim 3
Dependent Claim
25 words
An air heater as defined by claim 1 in which the perforations of the end plate are arranged in the form of two concentric circles.
Claim 4
Dependent Claim
31 words
An air heater as defined by claim 1 in which the end plate contains an annular groove between the two concentric circles to fit the bottom edge of a paper cup.
Claim 5
Dependent Claim
26 words
An air heater as defined by claim 1 and means for forcing air into the shell through the passages in the direction of the perforated plate.