VENTILATION DEVICE WITH SELF-REGULATING AUXILIARY VALVE AND BYPASSAGE

BE1033203B1Active Publication Date: 2026-07-14VERO DUCO NV
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Patent Information

Authority / Receiving Office
BE · BE
Patent Type
Patents
Current Assignee / Owner
VERO DUCO NV
Filing Date
2025-12-17
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing ventilation devices with self-regulating auxiliary valves suffer from noise nuisances such as rattling and whistling due to pressure equalization through bypass passages, compromising their operation during strong airflow.

Method used

A ventilation device with a self-regulating auxiliary valve featuring a circulating passage along the hinge center and specific dimension ratios between bypass and ventilation passages to optimize airflow distribution and minimize noise, utilizing an air-permeable hinge design with interrupted longitudinal housing for improved pressure equalization.

Benefits of technology

The solution effectively reduces noise nuisance while maintaining optimal airflow regulation by ensuring balanced pressure equalization and airflow distribution, even under varying airflow conditions.

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Abstract

The invention concerns a bypass passage extending along the hinge device between the ventilation passage and the area adjacent to the side of the auxiliary valve facing away from the ventilation passage. A sum is determined by the minimum dimension of the bypass passage and the minimum dimension of the ventilation passage near the auxiliary valve, where the ratio of the sum in a closed state of the auxiliary valve, when the auxiliary valve maximally closes off the ventilation passage, and the sum in a resting state of the auxiliary valve, when the auxiliary valve is at rest, is greater than approximately 0.15 and less than approximately 0.75. In the resting state, the ratio of the minimum dimension of the bypass passage and the sum is greater than approximately 0.1 and less than approximately 0.3. In the closed state, the ratio of the minimum dimension of the bypass passage and the sum is greater than approximately 0.25 and less than approximately 0.7.
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