Flat tube heat exchanger having corrugated fins with louvers
This patent describes a heat exchanger having corrugated fins having louvers connected by U-shaped bends and a liquid tube structure having flat, parallel, radiating surfaces with the U-shaped bends of the corrugated fins juxtaposed to and in heat-transfer contact with the radiating surfaces. The improvement described here is one in which the louvers are formed from substantially parallel fin plates which are normal to the radiating surfaces and have juxtaposed louver-blade-forming portions alternately projected above and below the base plane of each fin plate, thereby forming louver blades alternating above and below the base plane; at least in the front part of the louvers. The blades are arranged so that the states of inclination thereof relative to the base plane vary alternately, those above the plane sloping down toward the plane at an angle in the direction of the outlet end and those below the plane sloping up toward the plane at a like angle and in the same direction. The louver blades have a spacial arrangement such that there are uninterrupted lines of sight from one end to the other. One line of sight is above the base plane and another line of sight is below the base plane.
- Assignee:
- Nihon Radiator Co., Ltd., Tokyo
- Patent Number(s):
- US 4621687
- OSTI ID:
- 7059319
- Country of Publication:
- United States
- Language:
- English
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