APPARATUS FOR HEATING COOLING WATER OF DIESEL ENGINE USING PTC ELEMENTS, IN WHICH CUTS OFF CURRENT BY RAPIDLY INCREASING RESISTANCE IF TEMPERATURE OF HEATING PART BECOMES HIGHER THAN PREDETERMINED TEMPERATURE

摘要

PURPOSE: An apparatus for heating cooling water of a diesel engine using PTC elements is provided to prevent a cooling apparatus from being overheated by cutting off a current by rapidly increasing resistance if a temperature of a heating part becomes higher than a predetermined temperature. CONSTITUTION: An apparatus for heating cooling water is formed of a PTC(Positive Temperature Coefficient) heater(10) including a pair of heat sinks(12) and a plurality of PTC elements(11) connected with electrodes(13) respectively in a state that the plurality of PTC elements are inserted into mounting grooves(12a-2) of the heat sinks. The PTC heater has sealing grooves(12a-1,12b-1) formed at an inside combination surface(12a) and an outside cover combination body(12b), and an insert rubber(14) and a sealing rubber(15) installed at the sealing grooves respectively.