Ventilation and cooling device for electronic equipment compartment of aircraft

Abstract

An aircraft electronic equipment compartment ventilation cooling device for an aircraft electronic equipment compartment ventilation system having a fan, comprising: a cooler for cooling air delivered to the aircraft electronic equipment compartment by the fan; a demister for removing condensed water droplets from the cooled air after passing through the cooler; and a dehumidifier for removing condensed water droplets not removed by the demister from the air after passing through the demister. The moisture absorbing material in the dehumidifier is dried and regenerated by dry outside air when the aircraft is flying at high altitudes and the like where the air humidity is low.

Description

Technical Field

[0001] This invention relates to a ventilation and cooling device. More particularly, it relates to a ventilation and cooling device for an aircraft electronics compartment. Background Technology

[0002] Traditionally, the cooling unit of an aircraft's electronics bay mainly includes a liquid flow control valve, a ventilation fan, a gas-liquid heat exchanger, and a temperature sensor for detecting the temperature of the cooled air. The ventilation fan draws air from the aircraft's triangular area to the hot side of the gas-liquid heat exchanger. The air is cooled by a low-temperature refrigerant or other liquid in the heat exchanger before being sent into the electronics bay, thereby cooling the electronic equipment and other components within.

[0003] However, when the air temperature is cooled below the dew point, condensation from water vapor in the air may enter the electronics bay along with the cooled air. This condensation can cause short circuits and corrosion in electronic equipment, thus affecting flight safety. To address this, existing technology uses temperature sensors to detect the temperature of the cooled air. When the cooled air temperature reaches the dew point, a liquid flow control valve in the cooling unit reduces the refrigerant flow, raising the cooled air temperature to prevent condensation. However, increasing the cooled air temperature may reduce the cooling effect on the electronic equipment. Furthermore, when the aircraft is taxiing on the ground or flying at low altitudes, the relative humidity in the triangular area is higher. To prevent condensation, the temperature of the cooled air delivered to the electronics bay needs to be further increased, further reducing the cooling effect on the electronic equipment.

[0004] In addition, the cryogenic liquids used in the gas-liquid heat exchangers of the aforementioned electronics bay cooling units are generally also used in the cooling units of aircraft galley catering carts. To prevent food spoilage in the carts, the temperature of the refrigerant and other liquids must be low, generally below 0°C. When such cryogenic refrigerants flow in the gas-liquid heat exchangers, the surface temperature of the heat exchangers is below the freezing point. As a result, moisture in the air may frost onto the surface of the heat exchangers, potentially causing ice blockage and affecting the heat exchanger's heat transfer performance. Summary of the Invention

[0005] The present invention was made in view of the above-mentioned problems, and its purpose is to provide a ventilation and cooling device for aircraft electronic equipment compartments that can remove condensate from the air.

[0006] To achieve the above objectives, the present invention provides an aircraft electronic equipment bay ventilation and cooling device for use in an aircraft electronic equipment bay ventilation system having a fan that delivers air to the electronic equipment bay ventilation duct. The aircraft electronic equipment bay ventilation and cooling device includes: a cooler that cools the airflow generated by the fan and delivered to the electronic equipment bay ventilation duct; a demister that removes condensate droplets from the airflow after passing through the cooler; and a dehumidifier that removes condensate droplets smaller than the size of the condensate droplets removed by the demister from the airflow before it passes through the demister and is delivered to the electronic equipment bay ventilation duct.

[0007] According to this structure, the air delivered to the aircraft's electronic equipment bay can be cooled, and condensation droplets in the cooled airflow can be fully removed by a demister and a dehumidifier, preventing condensation droplets from entering the aircraft's electronic equipment bay with the cooled air, without having to limit the temperature of the air delivered to the electronic equipment bay.

[0008] Furthermore, in the aircraft electronic equipment bay ventilation and cooling device of the present invention, it is preferred that the cooler is a gas-liquid heat exchanger for heat exchange between air and refrigerant.

[0009] This structure enables efficient cooling of the air supplied to the aircraft's electronics bay, improving the cooling effect on the electronic equipment in the bay.

[0010] Furthermore, in the aircraft electronic equipment bay ventilation and cooling device of the present invention, it is preferred that the device further includes a regenerator, wherein the cold side outlet of the regenerator is connected to the refrigerant inlet of the cooler, and the refrigerant outlet of the cooler is connected to the hot side inlet of the regenerator.

[0011] This structure can increase the temperature of the refrigerant flowing into the cooler, preventing moisture in the air from frostling on the surface of the cooler due to the low temperature.

[0012] Furthermore, in the aircraft electronic equipment bay ventilation and cooling device of the present invention, it is preferable to further include a flow regulating valve, which is disposed on a refrigerant pipe that connects the cold side inlet of the regenerator to the refrigerant supply source.

[0013] Furthermore, in the aircraft electronic equipment bay ventilation and cooling device of the present invention, it is preferred to further include: a temperature sensor that detects the air temperature at the electronic equipment bay inlet; and a controller that controls the opening degree of the flow regulating valve based on the detection result of the temperature sensor.

[0014] According to this structure, the flow rate of the refrigerant flowing to the cooler can be adjusted based on the air temperature delivered to the electronic equipment compartment, thereby adjusting the air temperature delivered to the electronic equipment compartment to an appropriate temperature.

[0015] Furthermore, in the aircraft electronic equipment bay ventilation and cooling device of the present invention, it is preferred to include: a cooling mode in which the controller controls the flow regulating valve to open; and a regeneration mode in which the controller controls the flow regulating valve to close.

[0016] According to this structure, the operating mode of the ventilation and cooling device can be switched by the controller, and the moisture-absorbing material in the dehumidifier can be dried and regenerated by the airflow without the need to cool the air.

[0017] Furthermore, in the aircraft electronic equipment compartment ventilation and cooling device of the present invention, it is preferred that the demister is a baffle-type demister.

[0018] Furthermore, in the aircraft electronic equipment compartment ventilation and cooling device of the present invention, it is preferred that the demister has a partition, a housing and a water collection section, the partition is perpendicular to the horizontal plane, and multiple air flow channels are separated in the housing.

[0019] Furthermore, in the aircraft electronic equipment compartment ventilation and cooling device of the present invention, it is preferable that the water collection part is integrally formed with the housing, and a drainage part is provided in the water collection part.

[0020] Furthermore, in the aircraft electronic equipment compartment ventilation and cooling device of the present invention, it is preferred that the dehumidifier is an adsorption dehumidifier.

[0021] (Invention Effects)

[0022] The aircraft electronics bay ventilation and cooling device according to the present invention can cool the air supplied to the electronics bay using a cooler, and can effectively remove condensate generated in the cooled air using a demister and a dehumidifier. Thus, condensate in the cooled air can be prevented from entering the aircraft electronics bay without limiting the temperature of the air supplied to the aircraft electronics bay.

[0023] Furthermore, by incorporating a regenerator, the temperature of the refrigerant flowing into the cooler can be increased, preventing moisture in the air from condensing on the cooler's surface. Additionally, dry air can be used to dry and regenerate the moisture-absorbing material in the dehumidifier when the relative humidity is low, eliminating the need for heating during drying and regeneration, thus reducing energy consumption. Attached Figure Description

[0024] Figure 1This is a schematic structural diagram showing a ventilation system including a ventilation and cooling device for an aircraft electronic equipment compartment with embodiments.

[0025] Figure 2 This is a top view showing the structural components of the demister.

[0026] (Symbol Explanation)

[0027] 1. Flow regulating valve;

[0028] 2. Regenerators;

[0029] 3. Gas-liquid heat exchanger;

[0030] 4. Demister;

[0031] 5. Dehumidifier;

[0032] 6. Temperature sensors;

[0033] 7 controllers;

[0034] 8 ventilation fans;

[0035] 9. Ventilation ductwork;

[0036] 10. Cooling device;

[0037] 11. Ventilation system;

[0038] 12. Ventilation ducts for electronic equipment compartments;

[0039] 13. Shell;

[0040] 14 partitions;

[0041] 15 airflow channels. Detailed Implementation

[0042] Below, in conjunction with Figure 1 and Figure 2 A detailed description of one embodiment of the present invention will be provided.

[0043] Figure 1 This is a schematic structural diagram of an aircraft electronic equipment bay ventilation system (hereinafter sometimes simply referred to as ventilation system) 11, which includes an aircraft electronic equipment bay ventilation and cooling device (hereinafter sometimes simply referred to as cooling device) 10 with embodiments. Figure 2 This is a top view showing the structural components of the demister 4.

[0044] like Figure 1 As shown, the ventilation system 11 includes a cooling device 10, a ventilation fan 8, and an electronics compartment ventilation duct 12. The cooling device 10 is connected to the ventilation fan 8 and the electronics compartment ventilation duct 12 via the ventilation pipe 9 described below. Furthermore, the ventilation system 11 is preferably located in a pressurized compartment below the aircraft floor.

[0045] The ventilation fan 8 is, for example, a centrifugal fan, and has an inlet end and an outlet end. The inlet end of the ventilation fan 8 is located, for example, in the cargo hold triangle area of ​​the aircraft, and the outlet end is airtightly connected to the air inlet of the gas-liquid heat exchanger 3 described below via a ventilation duct 9. The ventilation fan 8 draws air from the triangle area through its inlet end and then discharges the air from the outlet end, causing the air to flow along the ventilation duct 9 from the outlet end to the air inlet of the electronics compartment, i.e., the air intake end of the electronics compartment ventilation duct 12.

[0046] The cooling device 10 includes a flow regulating valve 1, a regenerator 2, a gas-liquid heat exchanger 3 serving as a cooler, a demister 4, a dehumidifier 5, a temperature sensor 6, a controller 7, a ventilation duct 9 for airflow, and a refrigerant pipe for liquid refrigerant flow.

[0047] The gas-liquid heat exchanger 3 can be, for example, a plate heat exchanger. A channel for fluid flow is formed in the gas-liquid heat exchanger 3; specifically, a channel for air flow (hereinafter referred to as the air side) is formed on one side of the gas-liquid heat exchanger 3, and a channel for liquid refrigerant flow (hereinafter referred to as the refrigerant side) is formed on the other side. As described above, the inlet of the air side is connected to the outlet of the ventilation fan 8 via a ventilation duct 9, and the outlet of the air side is connected to the demister 4 via a ventilation duct 9.

[0048] The higher-temperature air supplied by the ventilation fan 8 exchanges heat with the lower-temperature refrigerant flowing in the gas-liquid heat exchanger 3, thereby cooling the air passing through the gas-liquid heat exchanger 3. The cooled air then reaches the demister 4 from the air-side outlet through the ventilation duct 9.

[0049] In addition, the type of gas-liquid heat exchanger 3 is not limited to plate heat exchangers; it can also be a microchannel heat exchanger, etc.

[0050] The demister 4 is a baffle-type demister, which mainly includes a housing 13, a plurality of baffles 14 arranged in a row, and a water collection section. Hereinafter, for ease of explanation, the arrangement direction of the plurality of baffles 14 is defined as the left-right direction, the direction parallel to the horizontal plane and orthogonal to the left-right direction is defined as the front-back direction, and the direction orthogonal to the front-back direction and the left-right direction is defined as the up-down direction.

[0051] The housing 13 forms the appearance of the demister 4. The housing 13 is, for example, made of stainless steel and has a chassis, a top wall, and multiple side walls. The chassis is, for example, rectangular when viewed from above, with its length in the left-right direction. Furthermore, the chassis is configured such that its upper and lower surfaces are parallel to the horizontal plane.

[0052] Multiple sidewalls (four in this case) extend upward from the edge of the chassis. Of these four sidewalls, the sidewalls formed on both sides of the chassis in the left-right direction are the left sidewall and the right sidewall, respectively, and the sidewalls formed on both sides of the chassis in the front-rear direction are the front sidewall and the rear sidewall, respectively. The left sidewall and the right sidewall have the same length in the vertical direction. Preferably, the front sidewall and the rear sidewall have the same length in the vertical direction, and the lengths of the front and rear sidewalls in the vertical direction are less than the lengths of the left and right sidewalls in the vertical direction.

[0053] The top wall is positioned parallel to the chassis above and above the left and right side walls, and connects to them. The shape of the top wall is not particularly limited; preferably, the chassis is located within the area of ​​the top wall when viewed from above.

[0054] The water collection section is integrally formed with the housing 13. Specifically, the four side walls of the housing 13, together with the chassis, form an upwardly open space, which functions as the water collection section of the demister 4. In addition, drain outlets are formed on the chassis or on the lower part of the front and rear side walls for draining condensate from the water collection section to the outside of the cooling device 10.

[0055] The partition 14 is formed, for example, by repeatedly bending a rectangular sheet of stainless steel. Each partition 14 is arranged with its surface perpendicular to the horizontal plane and is fixed to the top wall, left side wall, and right side wall of the housing 13 by means of welding, for example. Preferably, in the vertical direction, the lower end of the partition 14 is located above the front and rear side walls of the housing 13. Furthermore, it is preferable that in the front-back direction, the front end of the partition 14 is located behind the front side wall of the housing 13, and the rear end of the partition 14 is located in front of the rear side wall of the housing 13. This ensures sufficient airflow through the demister 4 and allows for better collection of condensate through the water collection section.

[0056] like Figure 2 As shown, the baffles 14 are arranged parallel to each other with a certain interval between them, forming airflow channels 15 between adjacent baffles 14. When viewed from above, the surface of each baffle 14 is bent multiple times to form the same roughly "S"-shaped multi-fold structure, and the corresponding bends on each baffle 14 are arranged in the left-right direction. Through this structure, multiple baffles 14 form airflow channels 15 with multiple bends in the demister 4.

[0057] When air is cooled below its dew point temperature by heat exchange with the refrigerant in the gas-liquid heat exchanger 3, water vapor in the air condenses and forms water droplets. As this air containing condensate droplets passes through the demister 4, when it passes through the bend in the airflow channel 15 formed in the demister 4, such as... Figure 2As shown by the dashed arrows, the airflow direction changes with the airflow channel 15, but some of the condensed water droplets in the air are impacted by inertial impaction onto each baffle 14, and thus captured by the baffle 14. The condensed water droplets that impact and adhere to each baffle 14 slide off the baffle 14 under the action of gravity and fall into the water collection section below, and then are discharged from the drain outlet. Because the airflow channel 15 in the demister 4 has multiple bends, the condensed water droplets contained in the cooled air can be removed multiple times in the demister 4 in the above manner, which can effectively dehumidify the cooled air.

[0058] However, when the condensate droplets in the cooled air are small, due to their low inertia, they easily change direction with the air at the bends in the airflow channel 15, making them difficult to be captured by the baffle 14. Therefore, in the ventilation duct 9, a dehumidifier 5 is installed downstream of the airflow direction of the demister 4 to further dehumidify the air flowing out of the demister 4.

[0059] The dehumidifier 5 includes a dehumidifier body and a moisture-absorbing material filled inside the dehumidifier body. The dehumidifier body has an air inlet and an exhaust outlet. The air inlet is connected to the outlet side of the demister 4 via a ventilation duct 9, and the exhaust outlet is connected to the air inlet of the aforementioned electronic equipment compartment via a ventilation duct 9.

[0060] The moisture-absorbing material filled inside the dehumidifier body is a renewable material. It can remove condensation droplets that are not captured by the baffle 14 of the demister 4 and can be regenerated by allowing air with lower relative humidity to flow through it. Examples of renewable moisture-absorbing materials include renewable cotton fibers and silica gel particles. Furthermore, when the moisture-absorbing material is cotton fiber, it is preferable to install filters at the air inlet and outlet of the dehumidifier body of the dehumidifier 5 to prevent the cotton fibers from being blown out into the ventilation duct 9 by the airflow.

[0061] After being cooled, the air flows through the demister 4 and then along the ventilation duct 9. It enters the dehumidifier body from the air inlet of the dehumidifier 5, where the moisture-absorbing material filling the dehumidifier body removes any remaining condensation droplets from the air. The air then exits from the exhaust port of the dehumidifier 5 and flows along the ventilation duct 9 to the air inlet of the electronic equipment compartment, where it cools the electronic equipment and other devices installed in the compartment via the ventilation duct.

[0062] Therefore, even if the air drawn in from the aircraft triangle by the ventilation fan 8 is cooled to below the dew point temperature in the gas-liquid heat exchanger 3, the condensate generated in the air can be fully removed by the demister 4 and dehumidifier 5, thereby ensuring that the air flowing into the aircraft's electronic equipment bay is free of condensate and avoiding the impact of condensate in the air on the electronic equipment.

[0063] The regenerator 2 is, for example, a plate regenerator, with channels for fluid flow formed on both sides. In this embodiment, a channel for the flow of a lower-temperature liquid refrigerant (hereinafter referred to as the cold side) is formed on one side of the regenerator 2, and a channel for the flow of a higher-temperature liquid refrigerant (hereinafter referred to as the hot side) is formed on the other side.

[0064] The cold-side inlet of regenerator 2 is connected to the refrigerant supply pipe of the refrigerant circulation device (not shown) via a refrigerant pipe. The cold-side outlet is connected to the refrigerant-side inlet of the gas-liquid heat exchanger 3 via a refrigerant pipe. The hot-side inlet is connected to the refrigerant-side outlet of the gas-liquid heat exchanger 3 via a refrigerant pipe. The hot-side outlet is connected to the refrigerant inlet of the recovery unit (not shown) of the aforementioned refrigerant circulation device via a refrigerant pipe. Low-temperature refrigerant (e.g., refrigerant below 0°C) flows from the refrigerant supply pipe to the cold-side inlet of regenerator 2 via the refrigerant pipe. The refrigerant, heated by heat exchange with air in the gas-liquid heat exchanger 3, flows into regenerator 2 from the hot-side inlet via the refrigerant pipe and exchanges heat with the low-temperature refrigerant flowing from the cold-side inlet of regenerator 2, thereby heating the refrigerant flowing in the cold side. The temperature of the heated refrigerant flowing in the cold side of regenerator 2 is, for example, above 0°C.

[0065] Therefore, compared with the low-temperature refrigerant flowing directly into the gas-liquid heat exchanger 3 from the refrigerant side inlet, the temperature of the refrigerant flowing on the refrigerant side of the gas-liquid heat exchanger 3 can be increased, preventing the heat exchange performance from being reduced due to frost formation on the surface of the gas-liquid heat exchanger 3 caused by moisture in the air.

[0066] A flow regulating valve 1 is installed in the refrigerant pipe that connects the regenerator 2 to the refrigerant supply pipe. The flow regulating valve 1 is an electric valve that regulates the flow rate of the liquid refrigerant flowing into the cold side of the regenerator 2 and further into the refrigerant side of the gas-liquid heat exchanger 3 by adjusting its opening degree. This allows for the regulation of the temperature of the air that has been cooled by heat exchange with the refrigerant in the gas-liquid heat exchanger 3.

[0067] The controller 7 is, for example, a microcomputer comprising a processor such as a CPU and a memory such as RAM and ROM. It is electrically connected to the flow control valve 1 and the temperature sensor 6, which detects the air temperature at the inlet of the electronic equipment compartment, via cables or the like. The controller 7 can receive the detected temperature signal from the temperature sensor 6 and drive the flow control valve 1 according to the temperature signal, thereby adjusting the opening degree of the flow control valve 1.

[0068] Therefore, the controller 7 can control the flow regulating valve 1 to the corresponding opening degree based on the air temperature at the inlet of the electronic equipment compartment detected by the temperature sensor 6, thereby enabling appropriate adjustment of the air temperature that is cooled in the gas-liquid heat exchanger 3 and delivered to the inlet of the electronic equipment compartment.

[0069] When the ventilation system 11, including the cooling device 10 of this embodiment, starts operating, the ventilation fan 8 is driven to draw air from the cargo hold triangle area of ​​the aircraft into the ventilation duct 9 and cause the air to flow along the ventilation duct 9 to the air inlet of the aircraft's electronic equipment bay. The temperature sensor 6, located near the air inlet of the aircraft's electronic equipment bay, detects the air temperature at the inlet at this time and sends the detection result to the controller 7.

[0070] The controller 7 compares the received detection result with a specified temperature. Here, the specified temperature is specifically determined based on the cooling temperature required for the electronic equipment compartment of the ventilation system 11, which is related, for example, to the load of the electronic equipment in the compartment. When the air temperature at the inlet is higher than the specified temperature, the controller 7 switches the cooling device 10 to cooling mode. When the cooling device 10 is in cooling mode, the controller 7 drives the flow control valve 1 to open. By opening the flow control valve 1, low-temperature liquid refrigerant flows from the refrigerant supply pipe of the refrigerant circuit through the refrigerant pipe to the cold side of the regenerator 2. The low-temperature refrigerant flowing out from the cold side of the regenerator 2 flows through the refrigerant pipe into the refrigerant side of the gas-liquid heat exchanger 3, where it exchanges heat with the warmer air flowing on the air side of the gas-liquid heat exchanger 3, thus cooling the air.

[0071] The air cooled in the gas-liquid heat exchanger 3 flows along the ventilation duct 9 and passes sequentially through the demister 4 and dehumidifier 5. In the demister 4, condensate droplets in the air cooled below the dew point temperature are captured by multiple baffles 14. The captured condensate droplets slide down under gravity into a water collection section integrally formed at the bottom of the demister 4 and are discharged from the drain outlet to the outside of the ventilation duct 9. In the dehumidifier 5, any remaining condensate droplets in the air are fully absorbed by moisture-absorbing materials such as cotton fibers. After two stages of dehumidification by the demister 4 and dehumidifier 5, the air flows along the ventilation duct 9 to the air inlet of the electronic equipment compartment and is blown out into the electronic equipment compartment through the ventilation duct, thereby cooling the various electronic devices installed in the electronic equipment compartment.

[0072] In addition, the refrigerant that has undergone superheat exchange with air in the gas-liquid heat exchanger 3 flows to the hot side of the regenerator 2 through the refrigerant pipeline and exchanges heat with the low-temperature refrigerant flowing in the cold side of the regenerator 2, thereby raising the temperature of the refrigerant flowing in the cold side.

[0073] In addition, aircraft equipped with ventilation system 11 may also be equipped with atmospheric pressure sensors to detect the atmospheric pressure outside the aircraft, temperature sensors to detect the air temperature outside the aircraft, humidity sensors to detect the air humidity outside the aircraft, and tire pressure sensors to detect the load on the aircraft tires. Controller 7 can receive detection signals from these sensors and determine information related to the flight status, such as the aircraft's altitude, the temperature and humidity of the outside air, and whether the aircraft is taxiing, based on the detection signals.

[0074] When an aircraft is taxiing on the ground or flying at low altitude, the temperature and relative humidity of the air outside the aircraft are relatively high. When the controller 7 determines that the aircraft is taxiing on the ground or flying at low altitude based on the detection signals sent by the aforementioned sensors, the controller 7 controls the cooling device 10 to operate in cooling mode.

[0075] When an aircraft is flying or cruising at high altitude, the temperature and relative humidity of the air outside the aircraft are low. When the controller 7 determines that the aircraft is flying or cruising at high altitude based on the detection signals sent by the aforementioned sensors, the controller 7 switches the cooling device 10 to regeneration mode.

[0076] When the cooling device 10 is in regeneration mode, the controller 7 drives the flow regulating valve 1 to close. As a result, the cryogenic refrigerant no longer flows into the cooling device 10 from the refrigerant supply pipe. Therefore, the air passing through the gas-liquid heat exchanger 3 is not cooled and flows directly into the aircraft's electronic equipment bay after passing through the demister 4 and dehumidifier 5 in sequence, cooling the electronic equipment and other electronic devices in the bay.

[0077] At this time, since the humidity of the air introduced into the triangular area of ​​the ventilation duct 9 by the ventilation fan 8 is low, the moisture-absorbing material filled in the dehumidifier 5 is dried and regenerated when the air flows through the dehumidifier 5 along the ventilation duct 9. Therefore, there is no need to install additional equipment such as heaters in the cooling device 10 to heat the moisture-absorbing material in the dehumidifier 5, and the moisture-absorbing material filled in the dehumidifier 5 can be dried and regenerated by the dry air outside the aircraft.

[0078] (Main effects of this implementation method)

[0079] According to this embodiment, the aircraft electronics bay ventilation and cooling device can remove condensation droplets generated in the air cooled by the gas-liquid heat exchanger using a demister, and can further dehumidify the air after passing through the demister using a dehumidifier, thereby ensuring that the cooling air delivered to the aircraft electronics bay is free of condensation and preventing short circuits and other malfunctions caused by condensation in the electronic equipment. When the aircraft is flying in an environment with low humidity and temperature, such as at high altitudes, the controller switches the aircraft electronics bay ventilation and cooling device to regeneration mode, using dry air in the triangular zone to dry and regenerate the moisture-absorbing material in the dehumidifier. Therefore, it is not necessary to install an additional heater or the like to achieve the drying and regeneration of the moisture-absorbing material, reducing additional energy consumption. In addition, a regenerator is provided to increase the temperature of the refrigerant flowing into the gas-liquid heat exchanger and prevent frost formation on the surface of the gas-liquid heat exchanger.

[0080] The embodiments of the present invention have been described above, but it should be understood that various changes in form and details can be made without departing from the spirit and scope of the present invention.

[0081] For example, the cooling device 10 in the above embodiment includes a regenerator 2, but the regenerator 2 can also be replaced by a device that can heat the liquid refrigerant, such as a gas-liquid heat exchanger.

Claims

1. A ventilation and cooling device for an aircraft electronic equipment bay, used in an aircraft electronic equipment bay ventilation system with a fan, the fan directing airflow into the electronic equipment bay ventilation duct. Its features are, include: The cooler is a gas-liquid heat exchanger that allows heat exchange between air and a refrigerant, and cools the airflow generated by the fan and sent to the ventilation duct of the electronic equipment compartment. A demister removes condensate droplets from the airflow passing through the cooler. A dehumidifier filled with recyclable moisture-absorbing material, the dehumidifier removes condensate droplets smaller than those removed by the demister from the airflow that flows through the demister and is sent to the ventilation duct of the electronic equipment compartment. A regenerator, wherein the cold-side outlet of the regenerator is connected to the refrigerant inlet of the cooler, and the refrigerant outlet of the cooler is connected to the hot-side inlet of the regenerator; as well as A flow regulating valve is provided on the refrigerant pipe that connects the cold side inlet of the regenerator to the refrigerant supply source. The aircraft electronics compartment ventilation and cooling device includes a cooling mode and a regeneration mode. In the cooling mode, the flow regulating valve is open, and in the regeneration mode, the flow regulating valve is closed, and the moisture-absorbing material is dried and regenerated by airflow.

2. The aircraft electronic equipment bay ventilation and cooling device according to claim 1, characterized in that, include: A temperature sensor that detects the air temperature at the entrance to the electronic equipment compartment; as well as The controller controls the opening degree of the flow regulating valve based on the detection result of the temperature sensor.

3. The aircraft electronic equipment bay ventilation and cooling device according to claim 1, characterized in that, The demister is a baffle plate type demister.

4. The aircraft electronic equipment bay ventilation and cooling device according to claim 3, characterized in that, The demister has a baffle plate, a housing, and a water collection section. The partition is perpendicular to the horizontal plane and separates multiple airflow channels within the housing.

5. The aircraft electronic equipment bay ventilation and cooling device according to claim 4, characterized in that, The water collection section is integrally formed with the shell. A drain outlet is provided in the water collection section.

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