Vehicle pre-heater, has frames coupled to outer side surfaces of outermost heat radiation fin assemblies, and reinforcing grooves longitudinally formed on contact surfaces of frames and heat radiation fin assemblies

摘要

The pre-heater has a pair of frames (4000, 5000) coupled to outer side surfaces of outermost heat radiation fin assemblies (2000). Reinforcing grooves (4100, 5100) are longitudinally formed on contact surfaces of the frames and the heat radiation fin assemblies. Longitudinal ends (4200, 5200) of the frames are coupled to housings (6000, 7000), where the housings are provided with coupling grooves into which the longitudinal ends of the frames are to be inserted.