Aquarium heater
AssigneeEiko Electric Products Corp.
InventorYu-Chin WANG
Life of this patent
Estimating the term…
Abstract
An aquarium heater includes a tubular plastic housing that houses a positive temperature coefficient element and two metal radiation fins and filled up with a thermal conductive filler, and a top cover capped on the tubular plastic housing to hold a power cable for transmitting electricity to the positive temperature coefficient element to generate heat. By means of the functioning of the positive temperature coefficient element, no temperature control loop is necessary for controlling the temperature level and therefore the size and manufacturing cost of the aquarium heater can be greatly reduced. Further, subject to the functioning of the positive temperature coefficient element, the aquarium heater has a self-protection function, achieving excellent foolproof effect.
Claims5
An aquarium heater, comprising:
- a tubular plastic housing, said tubular plastic housing comprising a closed bottom side and an opening in a top side thereof;
- anchoring means adapted to fasten said tubular plastic housing to an inside wall of an aquarium;
- a top cover adapted to close said opening of said tubular plastic housing;
- a power cable inserted through said top cover in a watertight manner and suspending in said tubular plastic housing;
- a positive temperature coefficient element electrically connected to said power cable and longitudinally positioned in the longitudinal center of said tubular plastic housing for generating heat when said power cable is electrically connected to a power source;
- a plurality of metal radiation fins surrounding said positive temperature coefficient element;
- and
- a thermal conductive filler filled in said tubular plastic housing around said positive temperature coefficient element and said metal radiation fins.
Dependencies are inferred from the claim text.