| 摘要 |
PURPOSE:To certainly and stably form ventilation paths through which primary and secondary air currents flow every other layer by holding mutual heat transfer plates by the spacer ribs provided on the surface of the heat transfer plate and the holding ribs provided on the rear of the adjacent heat transfer plate and fitting shielding ribs in fitting ribs. CONSTITUTION:Since heat transfer plates 2 are laminated by positioning the holding ribs 6 provided on the surface of the heat transfer plate 2 between the spacer ribs 4 provided on the rear of the adjacent heat transfer plate 2 and fitting the fitting ribs 5 provided on the rear of the heat transfer plate 2 in the step parts 3 of the shielding ribs 1 provided on the surface of the adjacent heat transfer plate 2, the leakage of air from the end parts of the heat transfer plates 2 can be prevented by the fitting of the fitting ribs 5 in the step parts 3 and the heat transfer plates 2 are mutually held by the spacer ribs 4 and the holding ribs 6 to certainly, alternately and stably form ventilation paths 9 allowing a primary air current to flow and ventilation paths 10 allowing a secondary air current to flow and resistance loss can be reduced and a blower can be also miniaturized. |
