Cabinet-type control heat exchanger with non-return air valve

By using vertically installed blades and an adjustment mechanism in the backflow preventer, the problems of blades not being able to open under light winds and safety during maintenance are solved, achieving stable heat exchange and safe maintenance.

CN121916710BActive Publication Date: 2026-06-05SHANGHAI KEGAI COOLING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI KEGAI COOLING TECH CO LTD
Filing Date
2026-03-27
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

The existing backflow preventer valves have blades that cannot be opened by a light breeze due to the action of a gravity hammer, and the blades are prone to swinging with the airflow or external force during maintenance or debugging, posing a safety hazard.

Method used

Multiple blades are vertically installed, and the blades are fixed and their positions are adjusted by closing the limit rod and adjusting the mechanism, replacing the gravity hammer closing method. During maintenance or debugging, the blades are fixed by the docking mechanism to prevent swaying.

Benefits of technology

To ensure normal heat exchange in light wind conditions, reduce resistance to valve opening, improve safety, adapt to airflow requirements under different operating conditions, and prevent blades from swaying arbitrarily and posing a threat to personnel.

✦ Generated by Eureka AI based on patent content.

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    Figure CN121916710B_ABST
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Abstract

The application relates to the technical field of heat exchange devices, in particular to a cabinet type control heat exchange device with check air valves, which comprises a heat exchange cabinet and multiple heat dissipation grooves arranged on the side surface of the heat exchange cabinet, multiple mounting frames are fixedly arranged on one side of the heat exchange cabinet, multiple heat dissipation grooves are correspondingly arranged on the multiple mounting frames, two check air valve mechanisms, adjusting mechanisms and operating mechanisms are symmetrically arranged in the multiple mounting frames, multiple U-shaped plates are arranged in the multiple check air valve mechanisms, mounting seats are arranged in the multiple mounting frames, extension mechanisms and butt joint mechanisms are arranged in the multiple mounting seats. The application replaces the mode of closing the check air valve through a gravity hammer in the prior art, can also reduce the resistance of the air valve opening, achieves the energy-saving effect, and solves the problem that multiple blades are easily swung with air flow or external force at random to threaten the workers during maintenance or debugging.
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