Heat exchangers and air conditioners

By designing a finned structure, increasing the contact area between the fins and the heat exchange tubes, and forming a through-drainage channel, the problems of reduced heat exchange area and poor drainage performance in existing air conditioning heat exchangers are solved, thereby improving the heat exchange efficiency and drainage capacity of the heat exchanger.

CN224285608UActive Publication Date: 2026-05-26HISENSE (GUANGDONG) AIR CONDITIONER
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HISENSE (GUANGDONG) AIR CONDITIONER
Filing Date
2025-04-28
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing fin structure of air conditioner heat exchangers results in a reduced heat exchange area and a lower heat exchange rate. Furthermore, they are prone to frost formation under heating conditions and have poor drainage performance.

Method used

Design a finned structure including a flat area, a corrugated area, and a transition area. The tube holes in the finned unit rows are staggered to increase the contact area between the fins and the heat exchange tubes, forming a through drainage channel to improve turbulence and heat exchange efficiency.

Benefits of technology

The increased contact area between the fins and the heat exchange tubes improves heat exchange capacity and drainage capacity, enhancing the heat exchanger's performance, especially ensuring smooth drainage of condensate under evaporation conditions.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224285608U_ABST
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Abstract

This utility model discloses a heat exchanger and an air conditioner. The heat exchanger includes: fins; heat exchange tubes, which are inserted into tube holes and through which refrigerant flows; the fin unit includes: a flat region arranged circumferentially along the tube hole; a corrugated region surrounding the flat region, with at least one central corrugation opposite to the flat region along the length of the fin; and a transition region obliquely connected between the flat region and the corrugated region; wherein the diameter of the flat region is D, and the sum of the wavelengths of at least one central corrugation is λ, and D and λ satisfy the relationship: 0.9D≤λ≤1.1D. This increases the contact area between the fins and the heat exchange tube, thereby improving the heat exchange capacity between the heat exchange tube and the fins. The small slope formed by the intersection of the flat region and the central corrugation prevents residual water formation and creates a continuous drainage channel, allowing condensate to drain smoothly during evaporation and improving the heat exchange capacity during evaporation.
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