Crimping fixed, remotely regulated electric heater

摘要

This invention is about crimping-fixed, remotely regulated electric heater, which includes a heater tube body to hold the heating elements of PTC and heat sinks that are attached to the heater tube. The heater tube is a long strip-shaped metal tube and has flanges attached to the upper surface and lower sides of this metal tube that forms grooves at the corner between these flanges and the upper/lower surface of the metal tube body. Inside the metal tube is a cavity to hold the PTC heating element with insulation layers are applied in the cavity. Heat sink is first placed on the left and right side of the heater tube, the flanges are folded to clamp the heat sink firmly to the heater tube.

主权项

1. A crimping-fixed, remotely regulated electric heater comprising:
a heater tube body to hold a plurality of PTC heating elements and a heat sink that is attached to the heater tube body; said heater tube body having a long strip-shaped metal tube and both a left side and a right sides of said long strip-shaped metal tube having a flange attached, the corners of tube body between said flanges and a top and a bottom outside surfaces of said long strip-shaped metal tube having a plurality of grooves, and an inside of said long strip-shaped metal tube body having a cavity to hold PTC heating elements wherein an insulation layer is applied in said cavity to prevent said heating elements directly contacting said tube body; said heat sink having at least two heat spreading fin units; wherein said fin unit towards a leading edge is bent upward at its central portion to form a tilted metal sheet and towards a trailing edge, said fin unit is kept in horizontal position to form a horizontal metal sheet and said fin units on both sides of said tilted metal sheet are kept horizontal to form two fastening metal sheets; a front side of a tilted metal sheet of a fin unit being connected to a back side of the horizontal metal sheet of another fin unit, wherein at least two fin units are connected in sequence to form a heat sink structure; and two adjacent tilted metal sheets being pointed toward to opposite directions and the longest distance between two adjacent titled metal sheets is equal to the length of a fastening metal sheet formed in said heat sink structure wherein the lower fastening metal sheet is clamped to said heat tube body using said flanges on both sides of the tube body.