Abstract: An electric control box includes a shell, a mounting plate, and a heat exchanger; the mounting plate and the heat exchanger are connected by screw-thread fitting of a first fastener and corresponding connecting holes, the mounting plate and the heat exchanger are located inside the shell, and the heat exchanger is located between the mounting plate and an inner bottom face of the shell; the mounting plate and the shell are connected by screw-thread fitting of a second fastener and corresponding connecting holes.

Abstract: Disclosed is a collecting pipe (1), comprising: an axially extending inner chamber (20), the inner chamber (20) comprising a refrigerant inlet chamber (18) and a refrigerant distribution chamber (19), the refrigerant inlet chamber (18) and refrigerant distribution chamber (19) being separated from each other and in fluid communication with each other, a refrigerant entering the refrigerant inlet chamber (18) and being distributed to heat exchange tubes (2) at the refrigerant distribution chamber (19); and a plurality of axially extending individual components (11, 12), wherein the refrigerant inlet chamber (18) and the refrigerant distribution chamber (19) are formed by successively placing and connecting the plurality of axially extending individual components (11, 12) in an assembling direction perpendicular to the axial direction. The collecting pipe (1) is composed of the plurality of individual components (11, 12).

Abstract: Disclosed is a heat exchanger (100), comprising a heat exchange tube (10), fins (20) and rings (30), wherein the fin (20) comprises a tubular part (21), and the ring (30) is used for fastening the tubular part (21) onto the heat exchange tube (10). A pressure is exerted in an axial direction of the heat exchange tube (10) on the tubular parts (21) of fins (20) and the rings (30) which are alternately sheathed onto the heat exchange tube (10), so as to fit the tubular part (21) together with the ring (30) in such a way that one is sheathed onto the other, thereby fixing the tubular parts (21) of the fins (20) onto the heat exchange tube (10). When the diameter of the heat exchange tube is relatively small, the tube expansion technique cannot be used for the connection of the heat exchange tube and the fins, and the heat exchanger (100) can avoid the complicated soldering process, thereby improving the product quality, and reducing the manufacturing costs of the product and the equipment investment.