CN-118921951-B - Ventilation cooling device for electronic equipment cabin of airplane

Abstract

A ventilation cooling device for an aircraft electronic equipment cabin is used for a ventilation system of the aircraft electronic equipment cabin with a fan, and comprises a cooler, a demister and a dehumidifier, wherein the cooler is used for cooling air conveyed to the aircraft electronic equipment cabin by the fan, the demister is used for removing condensation water drops in the cooled air after passing through the cooler, and the dehumidifier is used for removing condensation water drops which are not removed by the demister in the air after passing through the demister. When the aircraft flies under the condition of low air humidity such as high altitude, the moisture absorption material in the dehumidifier is dried and regenerated through the dry external air.

Inventors

• Lv zhongyuan
• BIAN ZHENG
• HOU BIN

Assignees

• 中国商用飞机有限责任公司
• 中国商用飞机有限责任公司上海飞机设计研究院

Dates

Publication Date

20260508

Application Date

20240730

Claims (5)

1. 1. An airplane electronic equipment cabin ventilation cooling device is used for an airplane electronic equipment cabin ventilation system with a fan, the fan supplies air to an electronic equipment cabin ventilation air duct, Characterized by comprising the following steps: the cooler is a gas-liquid heat exchanger for heat exchange between air and the secondary refrigerant, and is used for cooling air flow which is generated by the fan and is sent to the ventilation air duct of the electronic equipment cabin; A demister that removes condensed water droplets in the air stream after flowing through the cooler; A dehumidifier filled with a renewable hygroscopic material, the dehumidifier removing condensation water droplets smaller than the size of the condensation water droplets removed by the demister in an air flow flowing through the demister and before being sent to the electronic equipment compartment ventilation duct; The cold side outlet of the heat regenerator is connected with the cold carrier inlet of the cooler, the cold carrier outlet of the cooler is connected with the hot side inlet of the heat regenerator, and A flow regulating valve arranged on a secondary refrigerant pipe connecting the cold side inlet of the heat regenerator with a secondary refrigerant supply source, The ventilation cooling device of the electronic equipment cabin of the airplane comprises a cooling mode and a regeneration mode, wherein in the cooling mode, the flow regulating valve is opened, and in the regeneration mode, the flow regulating valve is closed, and the hygroscopic material is dried and regenerated through air flow.
2. 2. The aircraft electronics compartment ventilation cooling arrangement of claim 1, comprising: A temperature sensor for detecting the air temperature at the inlet of the electronic equipment compartment, and And the controller is used for controlling the opening degree of the flow regulating valve according to the detection result of the temperature sensor.
3. 3. The aircraft electronics compartment ventilation cooling device of claim 1, The demister is a baffle type demister.
4. 4. An aircraft electronics compartment ventilation cooling arrangement according to claim 3, characterized in that, The demister is provided with a baffle, a shell and a water collecting part, The partition plate is perpendicular to the horizontal plane, and a plurality of air flow channels are formed in the shell.
5. 5. The aircraft electronics compartment ventilation cooling device of claim 4, The water collecting part is integrally formed with the housing, The water collecting part is provided with a water outlet.

Description

Ventilation cooling device for electronic equipment cabin of airplane Technical Field The present invention relates to a ventilation cooling device. In particular to a ventilation cooling device for an electronic equipment cabin of an airplane. Background In the past, the cooling unit of aircraft electronic equipment cabin mainly includes liquid flow control valve, ventilation fan, gas-liquid heat exchanger and is used for carrying out the temperature sensor that detects to the air temperature after the cooling. Air in the triangular area of the aircraft is pumped to the hot side of the gas-liquid heat exchanger through the ventilation fan, and is cooled by low-temperature secondary refrigerant and other liquids in the gas-liquid heat exchanger and then is sent into the electronic equipment cabin, so that electronic equipment and the like in the electronic equipment cabin are cooled. However, when the temperature of the air is cooled below the dew point temperature, condensed water formed by condensation of water vapor in the air may enter the electronic equipment cabin along with the cooled air, and the condensed water entering the electronic equipment cabin may cause short circuit, corrosion and other effects on the electronic equipment, thereby affecting the flight safety. For this reason, in the prior art, the temperature of the cooled air is detected by a temperature sensor, and when the cooled air reaches the dew point temperature, the flow rate of the coolant is reduced by a liquid flow rate control valve in the cooling unit, and the cooled air is raised, thereby preventing the generation of condensed water in the air. However, increasing the temperature of the cooled air may reduce the cooling effect on the electronic equipment. In addition, when the aircraft is taxiing on the ground or flying at low altitude, since the relative humidity of the air in the triangular region is high at this time, it is necessary to further increase the temperature of the cooled air delivered to the electronic equipment compartment in order to prevent the generation of condensed water in the air, and thus the cooling effect on the electronic equipment in the electronic equipment compartment is further reduced. In addition, the cryogenic liquid used in the gas-liquid heat exchanger of the cooling unit of the electronic equipment compartment is also commonly used in the cooling unit of the aircraft galley cart at the same time. In order to prevent deterioration of the food in the dining car, it is required that the temperature of the liquid such as the coolant be low, and generally below 0 ℃. When such low-temperature coolant flows in the gas-liquid heat exchanger, the temperature of the surface of the gas-liquid heat exchanger is lower than the freezing point, so that moisture in the air may frost on the surface of the gas-liquid heat exchanger, and ice blockage may be further caused, thereby affecting the heat exchange performance of the heat exchanger. Disclosure of Invention The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an air cooling device for an aircraft electronic equipment compartment that can remove condensed water in the air. In order to achieve the above object, the present invention provides an aircraft electronic equipment compartment ventilation cooling apparatus for an aircraft electronic equipment compartment ventilation system having a fan that supplies air to an electronic equipment compartment ventilation duct, the aircraft electronic equipment compartment ventilation cooling apparatus including a cooler that cools an air flow generated by the fan that is directed to the electronic equipment compartment ventilation duct, a mist eliminator that removes condensation water droplets in the air flow after flowing through the cooler, and a dehumidifier that removes condensation water droplets smaller in size than the condensation water droplets removed by the mist eliminator in the air flow that flows through the mist eliminator and is directed to the electronic equipment compartment ventilation duct. According to this structure, it is possible to cool the air delivered to the aircraft electronic equipment compartment and sufficiently remove the condensed water droplets in the cooled air flow through the mist eliminator and the dehumidifier, preventing the condensed water droplets from entering the aircraft electronic equipment compartment along with the cooled air without restricting the temperature of the air delivered to the electronic equipment compartment. In the ventilation cooling device for an aircraft electronic equipment bay according to the present invention, it is preferable that the cooler is a gas-liquid heat exchanger for exchanging heat between air and a coolant. According to this structure, the air supplied to the electronic equipment compartment of the aircraft can be cooled efficiently, and the cooling eff