Hydraulic pipe-expanding device and method for finned evaporator

Abstract

The invention relates to the technical field of manufacturing equipment for finned evaporators, in particular to a hydraulic pipe-expanding device and method for a finned evaporator. The device comprises a base, a lower limiting mold, an upper limiting mold and a driving mechanism, wherein the lower limiting mold is fixedly arranged on the base and used for bearing and limiting the finned evaporator, the upper limiting mold is located above the lower limiting mold and matched with the lower limiting mold to limit the finned evaporator, and the driving mechanism drives mold assembling or mold splitting of the upper limiting mold and the lower limiting mold. A moving block is arranged at one end of the lower limiting mold and provided with a medium conveying channel and a driving device, and the driving device drives the moving block to be close to or far away from the lower limiting mold. The hydraulic pipe-expanding device and method for the finned evaporator can automatically increase the outer diameter of a U-shaped pipe where fins are sleeved and make the outer wall of the U-shaped pipe in close and full contact with through holes of the fins, thus, heat transfer between the U-shaped pipe and the fins can carried out well, performance of the evaporator is ensured, and assembly efficiency of the U-shaped pipe and the fins is promoted.

Description

technical field [0001] The invention relates to the technical field of finned evaporator production equipment, in particular to a hydraulic tube expansion device and method for a finned evaporator. Background technique [0002] The finned evaporator includes U-shaped tubes and several fins set on the U-shaped tubes. At present, in order to make the U-shaped tubes and the fins closely contact, the fins on the fins for the U-shaped tubes to pass through The diameter of the hole is made slightly larger than the outer diameter of the U-shaped tube, which is only the size of the intermittent assembly, and then the fins are placed on the U-shaped tube by artificial rigidity. Although the diameter of the through hole is slightly different from the outer diameter of the U-shaped tube, the There is still insufficient contact between the two, and insufficient heat transfer, thereby affecting the performance of the evaporator. At the same time, the assembly efficiency of this method is...

AI Technical Summary

Problems solved by technology

[0002] The finned evaporator includes U-shaped tubes and several fins set on the U-shaped tubes. At present, in order to make the U-shaped tubes and the fins closely contact, the fins on the fins for the U-shaped tubes to pass through The diameter of the hole is made slightly larger than the outer diameter of the U-shaped tube, which is only the size of the intermittent assembly, and then the fins are placed on the U-shaped tube by artificial rigidity. Although the diameter of the through hole is slightly different from the outer diameter of the U-shaped tube, the There is still insufficient contact between the two, and insufficient heat transfer, which affects the performance of the evaporator. At the same time, the assembly efficiency of this method is low.

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