Finned heat exchanger and method of manufacturing the same

Abstract

A finned heat exchanger, comprising a front side heat exchanger (20) and a rear side heat exchanger (40). Each of the front side heat exchanger and the rear side heat exchanger further comprises a large number of fins (21, 41) arranged parallel with each other at specified intervals and a large number of heat transfer tubes (11) inserted into the fins generally perpendicular to the fins and allowing refrigerant to flow therein. The fins of the front side heat exchanger are so formed that each of the upstream side leading edge (22, 23) thereof and the downstream side trailing edge (32, 33) thereof is formed in bent shapes by two straight line parts forming a same obtuse angle and a curved part line part (24, 34) connecting these two straight lines to each other, and that a distance (B) between the upstream side leading edge and the downstream side trailing edge in an area near a once-through blower (5) among two areas held by the linear upstream side leading edge and the linear downstream side trailing edge of the fins is made shorter than a distance (A) between the upstream side leading edge and the downstream side trailing edge in an area apart from the once-through blower.

Description

(1) Technical field [0001] The present invention relates to a finned heat exchanger and a method of manufacturing the same. (2) Background technology [0002] Such as Figure 5 As shown, the indoor unit of a general air conditioner is provided with one or more suction ports such as the front suction port 62a and the top suction port 62b on the frame body 61, and one or more air outlet ports such as the bottom air port 63. A cross flow fan 65 and a finned heat exchanger 64 are housed in 61 . [0003] This conventional finned heat exchanger 64 includes: the front side heat exchanger 64A as the main body which is arranged on the front side in the frame body 61 and bent near the center in the vertical direction; The back side heat exchanger 64B on the back side of the front side heat exchanger 64A, and the auxiliary heat exchangers 64C and 64D which are respectively auxiliary attached to the front side of the front side heat exchanger 64A. The front side heat exchanger 64A and...

AI Technical Summary

Problems solved by technology

[0007] However, in the finned heat exchanger described in the above-mentioned patent specification, the front side heat exchanger 71A is arc-shaped, and the inclination of the upper part of the fin 72 is slow, and when the finned heat exchanger is used as an evaporator, condensation The water stays on the upper part of the fins 72. In the worst case, the condensed water cannot flow along the fins 72, and the water droplets fall into the cross-flow fan 73, and there is a possibility that the water droplets will be scattered from the outlet 75.

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