Air damper for ship ventilation with U-shaped expansion and return noise reduction

Abstract

The invention discloses a U-shaped expansion backflow reducing-noise air gate for ventilation of ships, which comprises a control valve, a gate, a first lock plate, a main body, and a second lock plate. The main body, which is square, is provided with the first lock plate and the second lock plate on the front and back side respectively. The first lock plate, the second lock plate and the main body are a mold integrated structure. The gate is arranged in the main body. The control valve is arranged at the top face of the main body. The control valve and the gate are in mechanical connection. Anoise reduction system is arranged at the connection between the main body and the gate, and comprises an expansion hole-removing strip, a rebound top mechanism, a bottom plate and a baffle. According to the U-shaped expansion backflow reducing-noise air gate for ventilation of ships, the porosity between the gate and the main body is reduced by the expansion hole-removing strip and the rebound top mechanism together, and the gas flow caused by the air passing through which generates the noise can be avoided.

Description

technical field [0001] The invention relates to the field of ship ventilation equipment, in particular to a wind gate for ship ventilation with U-shaped expansion and backflow noise reduction. Background technique [0002] The damper is an important accessory used to cut off the ventilation pipeline in the ship's ventilation system. The ventilation system in the ship mainly rotates the ventilation cap on the deck to form a wind flow, and then transports it through the ventilation tubes and ventilation pipes all over the ship to meet the requirements of the air in the living area. At the same time, it meets the combustion needs of the equipment and takes away the toxic and harmful gases and heat accumulated in the working area. When the waves and sea winds are relatively strong, the ventilation cap will be closed to prevent water from entering the boat. At the same time, the wind in the ventilation pipe The gate will also be closed, but there is still a part of the wind passi...

AI Technical Summary

Problems solved by technology

[0002] The damper is an important accessory used to cut off the ventilation pipeline in the ship's ventilation system. The ventilation system in the ship mainly rotates the ventilation cap on the deck to form a wind flow, and then transports it through the ventilation tubes and ventilation pipes all over the ship to meet the requirements of the air in the living area. At the same time, it meets the combustion needs of the equipment and takes away the toxic and harmful gases and heat accumulated in the working area. When the waves and sea winds are relatively strong, the ventilation cap will be closed to prevent water from entering the boat. At the same time, the wind in the ventilation pipe The gate will also be closed, but there is still a part of the wind passing through the gap from the wind gate to make a friction sound. The sound is sharp and the noise is extremely loud. People on the boat must increase their decibels when speaking, otherwise it will be very difficult to listen.

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