Evaporator

Abstract

An evaporator 1 includes a plurality of refrigerant flow members 13 and corrugate fins 14 disposed in corresponding air-passing clearances between the adjacent refrigerant flow members 13. Each refrigerant flow member 13 includes a plurality of flat tubes 12 arranged in the front-rear direction. Each corrugate fin 14 is disposed to extend across all the flat tubes 12. A vertically extending drain portion 30 is formed between the flat tubes 12 adjacent each other in the front-rear direction. At each connection portion of the corrugate fin 14, a louver group 95A composed of a plurality of louvers 94A inclining downward toward the front is provided to correspond to a front portion of each flat tube 12. At least the front-end louver 94A of the louver group 95A provided to correspond to the front portion of each flat tube 12 except for the flat tube 12 at the front end is located in the drain portion 30. This evaporator exhibits excellent drainage of condensed water and enables high work efficiency in manufacture thereof.

Description

[0001] Cross References to Related Applications [0002] This application was filed pursuant to 35 U.S.C. § 111(a) and was filed under 35 U.S.C. § 111(b) on December 22, 2004 as required by 35 U.S.C. § 119(e)(1) Provisional Application No. 60 Filing date benefits of / 637,745. technical field [0003] The invention relates, for example, to evaporators to be installed in automotive air conditioning units. [0004] In the text and in the appended claims, the upper and lower sides of Figures 1, 2 and 10 will be referred to as "upper" and "lower", respectively. The downstream side of the airflow (the side indicated by the arrow X in Figures 1 and 10, and the right-hand side in Figure 4) is referred to as "front", while the opposite side is referred to as "rear". The left-hand and right-hand sides of Figures 2 and 10 are referred to as "left" and "right", respectively. Background technique [0005] A conventionally used evaporator for an automobile air conditioner includes a pl...

AI Technical Summary

Problems solved by technology

However, in the case where the amount of condensed water is large, a large amount of condensed water stagnates at this junction and cannot be sufficiently discharged from the front end side, which poses a problem that the condensed water is scattered when the air flow rate changes suddenly or the condensed water Reduced cooling performance by closing the gaps between the grids by surface tension

This creates a problem in the manufacture of the evaporator: it is cumbersome to assemble the refrigerant flow part and the separate fin part

In addition, the divided corrugated fins have a smaller heat transfer area with the air passing through the gap between the adjacent refrigerant flow parts than undivided corrugated fins, resulting in a problem of reduced heat exchange performance

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