A method for ventilation and cooling of avionics equipment using cockpit exhaust based on double exhaust valves
A technology for avionics equipment and exhaust valves, which is applied in air handling equipment, aircraft parts, transportation and packaging, etc. It can solve the problems of reduced cooling capacity of the environmental control system, cabin residual pressure exceeding the safe value, and large cabin exhaust volume flow, etc. Problems, to achieve the effect of wide practicability, less aircraft weight gain, and less space occupied by the aircraft
Active Publication Date: 2016-12-07
JIANGXI HONGDU AVIATION IND GRP
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Problems solved by technology
Due to the existence of the flow resistance of the above equipment, it is bound to cause the cabin residual pressure to rise
Especially in low-altitude high-temperature and high-altitude low-temperature environments, the cabin exhaust volume flow rate is large, which may easily cause the cabin residual pressure to exceed the safe value, causing the safety valve to open frequently, the cabin pressure fluctuates too much, and the increase in the cabin residual pressure will also cause environmental control problems. Reduced cooling capacity of the system
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[0012] In order to facilitate understanding, the following combination figure 1 with figure 2 The present invention is explained in detail.
[0013] Such as figure 1 As shown, the cockpit exhaust valve 1 and the equipment cooling exhaust valve 2 are installed on the aircraft cockpit 7. The cockpit exhaust valve 1 can follow figure 2 The cabin pressure system 9 or 10 is shown to adjust the cabin pressure, which is divided into three areas: the initial section to the height of h1 is the low residual pressure area, and the cabin pressure in this area remains constant; the height of h1 to h2 is absolute pressure adjustment In this area, according to the characteristics of the aircraft, different control methods can be adopted, such as keeping the absolute cabin pressure constant (such as cabin pressure system 10) or gradually increasing cabin residual pressure (such as cabin pressure system 9); from h2 height to aircraft ceiling height Vacant pressure zone, where the cabin pressur...
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The invention provides a method for realizing ventilation and cooling of aeronautic electric equipment by using cockpit exhaust air on the basis of double exhaust valves, and belongs to the technical field of airplane environment control. A cockpit exhaust valve and an equipment cooling exhaust valve are arranged in an airplane cockpit; the cockpit exhaust valve regulates the cockpit pressure according to a preset cockpit pressure system; and the equipment cooling exhaust valve regulates the equipment inlet pressure or the equipment cooling exhaust valve outlet pressure according to the preset pressure system, so that the cockpit exhaust air is enabled to be sufficient for the ventilation and the cooling of the electronic equipment.
Description
Technical field [0001] The invention belongs to the technical field of aircraft environment control and relates to a method for cooling avionics. Background technique [0002] The main advantages of using cockpit exhaust for ventilation and cooling of avionics are: ①No need to increase engine bleed air and less equipment, the performance compensation loss of the aircraft is almost zero ②The cabin exhaust temperature is relatively stable and generally does not occur Water vapor problems, suitable for cooling electronic equipment. [0003] The method of using cockpit exhaust to directly ventilate and cool the avionics is adopted, that is, the cockpit air directly flows out of the cockpit exhaust valve, and then is discharged outside the cabin after passing through the ventilation cooling pipeline and electronic equipment. Due to the flow resistance of the above equipment, the residual pressure in the cabin will inevitably increase. Especially in the low-altitude, high-temperature a...
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IPC IPC(8): B64D13/08
Inventor 刘治博黄永宽葛其模赵文婷姚贺龙王亮亮万雯雯乔旭东
Owner JIANGXI HONGDU AVIATION IND GRP