Smoke evacuation hood and vehicle

By incorporating drainage holes, a sloping bottom wall structure, a high-temperature resistant layer, a flow guide surface, and flexible seals within the smoke exhaust cap, the corrosion problem caused by liquid accumulation in the smoke exhaust cap is solved. This enables automatic liquid discharge and efficient smoke extraction, reduces maintenance requirements, and improves the safety and efficiency of vehicle operation.

CN224326328UActive Publication Date: 2026-06-05CRRC QINGDAO SIFANG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CRRC QINGDAO SIFANG CO LTD
Filing Date
2025-09-01
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing exhaust cap designs require frequent maintenance and are prone to corrosion due to liquid buildup, affecting vehicle operating efficiency and safety.

Method used

Design a smoke exhaust cap, including a drain hole located at the lowest point inside the cap body, combined with an inclined bottom wall structure, so that the accumulated liquid can naturally collect and be discharged through the drain hole. The inner wall of the cap body is lined with a high-temperature resistant layer, the guide surface guides the flow of exhaust gas, the smoke exhaust port faces away from the vehicle body, a flexible seal connects to the smoke exhaust pipe, and a flange connection ensures stability.

Benefits of technology

It enables automatic drainage of accumulated liquid, reduces maintenance frequency and cost, extends the service life of the exhaust cap, reduces the harm to vehicles caused by corrosion and high-temperature exhaust gas, and improves safety and operating efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224326328U_ABST
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Abstract

The utility model relates to the field of smoke exhaust, provide a kind of smoke exhaust cap and vehicle.The smoke exhaust cap includes cap body, and smoke exhaust cavity is formed in cap body, cap body is equipped with with vehicle smoke exhaust pipe intercommunication's air inlet and the smoke exhaust port for discharging exhaust gas, at least part of smoke exhaust pipe is inserted into smoke exhaust cavity by air inlet;Drainage hole, drainage hole is equipped in the bottom of cap body, for discharging the effusion in cap body.The drainage hole in the smoke exhaust cap is equipped in the lowest point of smoke exhaust cavity, cooperates the inclined structure of bottom wall, so that effusion can be naturally gathered and completely discharged through drainage hole, avoid the corrosion of inner wall caused by effusion residue of traditional smoke exhaust cap, significantly reduce the damage probability of smoke exhaust cap, prolong its overall service life.Only through gravity realizes effusion automatic discharge, without additional setting pump body, valve and other active drainage components, reduce mechanical failure risk, while save the maintenance step of artificial periodic cleaning effusion, reduce maintenance cost and workload in vehicle operation.
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