Mixed flow device for cold air and hot air
A technology of hot air and mixed flow, applied in air handling equipment, transportation and packaging, aircraft parts, etc., to improve the quality of air supply
Inactive Publication Date: 2016-06-01
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem of uniform mixing of the air supply temperature of the cold and hot circuit pipelines in a limited space
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[0013] The air flow distribution system of a certain type of aircraft adopts the method of mixing cold and hot circuits to adjust the temperature of the air finally supplied to the cabin. When controlling the temperature, a suitable measuring point is required to measure the temperature of the air supplied by the pipeline. However, due to the limited space in the cockpit, the mixing process of cold and hot air is relatively short. Therefore, the cold fluid enters the mixing chamber housing 7 through the cold fluid inlet 1, and the hot fluid enters the mixing chamber housing 7 through the hot fluid inlet pipe 2. Under the action of the fluid, the turbulence of the cold and hot fluids is intensified and the mixture is fully mixed. At the same time, the condensed water generated during the mixing process of cold and hot air is collected by the water collector 4 and then discharged through the drain joint 5 . The mixed air reaches temperature at outlet 6 and mixes evenly. It pro...
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The invention relates to a mixed flow device for cold air and hot air. The mixed flow device comprises a cold fluid inlet (1), a hot fluid inducting pipe (2), a rotational flow device (3), a water collector (4), a water draining mouthpiece (5), a fluid outlet (6) and a mixed cavity casing (7), wherein the cold fluid inlet (1) is formed in one end of the mixed cavity casing (7), the hot fluid inducting pipe (2) is arranged at the downstream position of the cold fluid inlet (1) and extends to the inner part of the mixed cavity casing (7), the rotational flow device (3) is arranged at the middle part of the mixed cavity casing (7), the fluid outlet (6) is formed in the other end of the mixed cavity casing (7), and the water collector (4) and the water draining mouthpiece (5) are arranged at upstream positions near the fluid outlet (6). According to the mixed flow device for cold air and hot air disclosed by the invention, the rotational flow device is additionally mounted in the mixed cavity body, and the cold fluid and the hot fluid are sufficiently mixed in a shorter flowing process; besides, the water collecting function is considered; the condensate water which is produced in air supply is collected by a water collecting box and is drained through a water draining pipeline, so that the air supply quality can be improved.
Description
technical field [0001] The invention belongs to the field of aircraft environment control. Background technique [0002] When the aircraft environmental control system supplies air to the cockpit, it generally controls the appropriate air supply temperature by adjusting the flow ratio of the cold and hot circuits. It is usually necessary to monitor the pipeline air supply temperature through a temperature sensor, and the installation point of the pipeline air supply temperature sensor requires that the air temperature here must be mixed evenly. Due to the low heat transfer coefficient of air, at a certain flow rate, it generally takes a long mixing section for the cold and hot fluids to reach a uniform temperature. However, due to the installation location and space constraints on the aircraft, it is impossible to provide a long pipeline space. At the same time, due to the high moisture content in hot air, condensed water often occurs when cold and hot air are mixed under ...
Claims
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IPC IPC(8): B64D13/08
Inventor 李艳娜
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA