FIN TYPE HEAT EXCHANGER FOR REFRIGERATING CYCLE

摘要

PURPOSE: A refrigerating cycle heat exchanger is provided to reduce suction resistance and to increase heat exchange efficiency by improving arrangement of refrigerant tubes penetrating plural heat exchange fins aligned in parallel. CONSTITUTION: A fin type heat exchanger(10) of refrigerating cycle is composed of plural heat exchange fins(11) having multilayered perforated assembling holes(11a,11b); multilayered refrigerant tubes(12) combined with plural heat exchange fins through assembling holes; and a defrosting heater(13) arranged at the edge of the heat exchange fins. Plural heat exchange fins are made of sheet metal, and arranged in parallel. The refrigerant tubes consist of a straight alignment part(12a) arranged in the lower part of the heat exchange fins at an air inlet, and an intersecting alignment part(12b) staggered in the upper part of the heat exchange fins at an air outlet. Air is streamed with arranging the refrigerant tubes penetrating the lower part of the heat exchange fins in a row. The airflow is prevented from being bypassed with bumping air into the refrigerant tubes and dispersing by crossing the refrigerant tubes penetrating the upper part of the heat exchange fins in the intersecting alignment part.