초록 ▼

A catalytic combustion and heat transfer device for use in a deep fat fryer is disclosed, characterized by increased efficiency and heat transfer. The device includes a hollow elongated heat exchanger having a generally oval interior cross-sectional configuration. A catalytic burner is mounted withi

A catalytic combustion and heat transfer device for use in a deep fat fryer is disclosed, characterized by increased efficiency and heat transfer. The device includes a hollow elongated heat exchanger having a generally oval interior cross-sectional configuration. A catalytic burner is mounted within a combustion end of the heat exchanger and a unique core buster and heat exchange fin arrangement is mounted within the flue end of the exchanger. The fin arrangement comprises a plurality of generally U-shaped tapered fins arranged in opposed pairs and connected with the inner side wall surface of the exchanger, with the leg portion of each opposed pair extending toward each other in spaced relation. The core buster is arranged between the opposed pairs of fins in contiguous relation with the free end edges thereof to define a plurality of channels within the fins, respectively. A spark ignition device is mounted adjacent the catalytic burner to ignite a combustion mixture supplied to the burner. Heat and flue gases are deflected by the core buster to the heat exchange fins and fin channels to increase the transfer of heat to the exterior surface of the heat exchanger.

대표청구항 ▼

A deep fat fryer, comprising (a) an open-top vessel adapted to hold a quantity of cooking oil; (b) heater means for heating the oil in said vessel, said heater means including (1) hollow, elongated heat exchange means arranged within said vessel and adapted for immersion in the oil, said heat exchan

A deep fat fryer, comprising (a) an open-top vessel adapted to hold a quantity of cooking oil; (b) heater means for heating the oil in said vessel, said heater means including (1) hollow, elongated heat exchange means arranged within said vessel and adapted for immersion in the oil, said heat exchange means having a generally oval interior vertical cross-sectional configuration, a combustion end portion and a flue end portion; (2) fiber matrix burner means mounted within said heat exchange means and closing the combustion end thereof, said burner means having a generally oval vertical cross sectional configuration, the longitudinal axis of said burner means corresponding with the longitudinal axis of said heat exchange means, whereby said burner is symmetrically arranged within said heat exchange means; (3) ignition means mounted within said heat exchange means adjacent said burner means; (4) a plurality of generally U-shaped fins connected with the opposite sides of said interior wall surface of said heat exchange means at the flue end thereof, each of said fins including a base portion connected with said interior side wall surface and a pair of leg portions extending inwardly toward and spaced from the leg portions of a corresponding fin connected with the opposite side of said interior wall surface, whereby said fins are arranged in opposed pairs; and (5) core buster means arranged between said opposed pairs of fins, said core buster means including (i) a rear portion extending longitudinally of said heat exchange means in contiguous relation with the end edges of said fin leg portions, thereby to define a channel within each of said U-shaped fins; and (ii) a front portion integral with said rear portion and extending toward said burner means for deflecting heat and exhaust from said burner means into said channels, whereby a greater quantity of heat is transferred to the outer wall surface of said heat exchange means owing to the U-shaped fins and to the reduction of cross-sectional area of said heat exchange means due to said core buster means; and (c) means for supplying a combustion mixture of gas and air to the interior of said fiber matrix burner means, whereby upon operation of said burner means, heat from said heat exchange means is used to heat the oil to a given temperature.