JPS59163790U - Heat exchanger - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Figure 1 is a perspective view of the heat exchanger, Figures 2a and 3a are perspective views showing the connection structure of heat exchanger tubes to header tubes, Figure 2b,
Figure 3 shows Figure 2 aA-A' sectional view, Figure 3 aB, respectively.
-B' line sectional view, FIGS. 4a to 4e are perspective views showing the shape of heat transfer tube end treatment, and FIGS. 5a to 5f are perspective views showing an example of the tube end treatment structure of the heat transfer tube according to the present invention. FIG. 6 is a broken sectional view showing a structure for connecting a heat exchanger tube to a header tube, which has been subjected to the treatment shown in FIG. 5a. In the drawing, 1 is a full gate fin, 2 is a heat exchanger tube, 2a is a straight pipe part, 2b is a meandering part, 2C is a partition wall, 2d is a refrigerant passage, 3
．． 4 is a header pipe, and 5 is a union.

Claims (1)

[Scope of utility model registration request] In a heat exchanger in which an end of a heat exchanger tube is inserted and coupled to a header tube along the tube axis direction, the end of the heat exchanger tube is treated so that the cross-sectional area of the passage hole gradually increases or decreases in the width direction, and A heat exchanger characterized in that the end face of a heat exchanger tube is joined to the inner wall of a header tube.