Ventilation system of air-conditioning assembly cabin

Abstract

An air conditioner assembly cabin ventilation system simplifies the overall structure of the ventilation system, reduces the weight of the system and improves the economical efficiency of an airplane. The ventilation system for the air-conditioning module compartment according to the present invention comprises: an air-conditioning module which is provided in the air-conditioning module compartment and which can send out air after temperature regulation; the air supply component is provided with an air supply port for supplying air into the air conditioner component cabin; and a ventilation path that connects the air-conditioning unit and the air blowing member so as to supply the air blown by the air-conditioning unit to the air blowing member.

Description

Technical Field

[0001] This invention relates to the field of aircraft air conditioning systems, and more particularly to ventilation systems for air conditioning component compartments. Background Technology

[0002] In civil aircraft, the air conditioning module compartment is typically located in the unpressurized area of ​​the wing-body fairing. The high-temperature heat sources installed inside, such as the air conditioning components and bleed air ducts, affect the temperature of this area. Excessive temperature within the air conditioning module compartment can directly impact the application of composite materials in the center wing box and damage the aircraft structure. Furthermore, the air conditioning module compartment is located under the center wing box, where fuel fumes may accumulate. Excessive temperature within the air conditioning module compartment could potentially lead to an explosion. Therefore, civil aircraft typically incorporate a ventilation system for the air conditioning module compartment to remove hot air around the air conditioning components, bleed air ducts, and other parts, maintaining the temperature within normal limits (approximately 80°C) to prevent structural damage and the accumulation of fuel and hydraulic vapors.

[0003] Currently, the aforementioned air conditioning module compartment ventilation system typically includes: a ground air inlet; a ram air inlet; a flute; a first ventilation path that directs air introduced from the ground air inlet toward the flute; a second ventilation path that directs air introduced from the ram air inlet toward the flute; a high-pressure bleed air pipe that directs high-pressure bleed air from the air source system toward the first ventilation path; a turbofan located in the first ventilation path and driven by the high-pressure bleed air from the air source system to draw in outside air; and a valve located in the high-pressure bleed air pipe (used to shut off the turbofan), etc. When the aircraft is on the ground, the high-pressure bleed air from the air source system drives the turbofan to draw in outside air, which is then blown through the flute to the area around the high-temperature equipment in the air conditioning module compartment, causing the hot air in the compartment to circulate and remove the hot air around the air conditioning modules, bleed air pipes, and other components, maintaining the temperature within normal limits. On the other hand, after takeoff, ram air is directly introduced through the ram air inlet to ventilate the air conditioning module compartment.

[0004] In the aforementioned air conditioning module cabin ventilation system, the high-pressure bleed air duct, turbofan, valve, and ground air inlet are only used when the aircraft is on the ground. They require high-temperature and high-pressure bleed air to perform work. After the high-temperature bleed air is expanded by the turbofan, it is discharged into the air conditioning module cabin, increasing the additional heat load. Moreover, when the outside temperature is high (e.g., above 40°C), the cooling effect of the outside air drawn into the air conditioning module cabin is limited. Therefore, more bleed air is required to draw in more outside air to meet the ventilation and heat dissipation needs of the high-temperature equipment in the air conditioning module cabin, which increases the APU bleed air load. Summary of the Invention

[0005] The present invention was made in view of the above-mentioned problems, and its purpose is to provide an air conditioning component compartment ventilation system that simplifies the overall structure of the ventilation system, reduces the system weight, and improves the aircraft's economy.

[0006] To achieve the above objectives, the present invention provides a ventilation system for an air conditioning component compartment, comprising: An air conditioning unit is disposed in an air conditioning unit compartment and is capable of delivering temperature-regulated air; an air supply component has an air outlet for delivering air into the air conditioning unit compartment; and a ventilation path connects the air conditioning unit and the air supply component to supply air delivered by the air conditioning unit to the air supply component.

[0007] The ventilation system for the air conditioning component compartment according to the present invention, compared with the case where ground air inlets, high-pressure bleed air pipes, etc. are provided for ventilation and heat dissipation in the air conditioning component compartment when the aircraft is on the ground, helps to simplify the overall structure of the ventilation system, reduce system weight, reduce engine bleed air, optimize installation space, and improve aircraft economy; and by drawing high-pressure low-temperature gas from the air conditioning component outlet for ventilation and heat dissipation in the air conditioning component compartment, it can also reduce the waste of high-pressure bleed air and additional heat load input caused by turbofan expansion, reduce the bleed air volume to the flow rate required for turbofan expansion, and improve aircraft economy.

[0008] Furthermore, in the air conditioning component compartment ventilation system of the present invention, it is preferable to further include a ram air inlet, and the ventilation path includes: a first ventilation path, which supplies air introduced by the ram air inlet to the air supply component; and a connecting path, which supplies air delivered by the air conditioning component to the first ventilation path.

[0009] The air conditioning component compartment ventilation system according to the present invention can utilize the first ventilation path typically found in civil aircraft as part of the ventilation path. Compared with the case where a dedicated ventilation path is set up outside the first ventilation path to connect the air conditioning components and the air supply components, it helps to shorten the ventilation path and thus helps to further reduce the system weight.

[0010] Furthermore, the air conditioning component compartment ventilation system of the present invention preferably further includes: a regulating valve disposed in the communication path and controlling the airflow state in the communication path; and a control unit that controls the regulating valve.

[0011] The air conditioning component compartment ventilation system according to the present invention can conveniently control the amount of cold air supplied by the air conditioning component to the air supply component.

[0012] Furthermore, in the air conditioning component compartment ventilation system of the present invention, a second ventilation path is preferably included, which delivers the air supplied by the air conditioning component to the cabin, and the connecting path connects the middle of the first ventilation path with the middle of the second ventilation path.

[0013] The air conditioning component compartment ventilation system according to the present invention helps to shorten the connection path compared to the case where the connection path is set independently of the second ventilation path, thus helping to further reduce the system weight; on the other hand, since the regulating valve is set in the connection path instead of the second ventilation path, even if the regulating valve fails and is in the closed position, it will not prevent the air delivered by the air conditioning component from being transported toward the cabin via the second ventilation path, thus avoiding any impact on the comfort of the occupants.

[0014] Furthermore, the air conditioning component compartment ventilation system of the present invention preferably also includes a mixing chamber, which mixes the air supplied by the second ventilation path with the recirculated air of the recirculation system and then delivers it to the cabin.

[0015] Furthermore, in the air conditioning component compartment ventilation system of the present invention, preferably the ram air inlet, the air supply component, the first ventilation path, the air conditioning component, the connecting path, the regulating valve, and the second ventilation path are arranged in left and right pairs respectively.

[0016] According to the air conditioning component compartment ventilation system of the present invention, even if the air conditioning component or regulating valve on one side fails, the air conditioning component on the other side can be used to ventilate and dissipate heat in the air conditioning component compartment, thus easily ensuring the reliability of ventilation and heat dissipation.

[0017] Furthermore, in the air conditioning component compartment ventilation system of the present invention, the regulating valve is preferably capable of cutting off the flow of air in the communication path.

[0018] According to the ventilation system of the air conditioning component compartment of the present invention, when the aircraft is in flight, the air introduced by the ram air inlet can provide good ventilation and heat dissipation in the air conditioning component compartment. Therefore, when the aircraft is in flight, cutting off the flow of air in the communication path by using the regulating valve helps to avoid adding unnecessary burden to the air conditioning components.

[0019] Furthermore, in the air conditioning component compartment ventilation system of the present invention, the air supply component is preferably a flute-shaped pipe.

[0020] The air conditioning component compartment ventilation system according to the present invention can easily deliver air evenly over a large area within the air conditioning component compartment. Attached Figure Description

[0021] Figure 1 This is a block diagram illustrating the ventilation system of the air conditioning component compartment according to an embodiment of the present invention.

[0022] (Symbol Explanation)

[0023] 1. Air conditioning components

[0024] 1L Left side air conditioning unit

[0025] 1R Right side air conditioning unit

[0026] 2. Air supply components

[0027] 2L Left side air supply unit

[0028] 2R Left side air supply component

[0029] 3 First ventilation path

[0030] 3L Left-side first ventilation path

[0031] 3R Right-side first ventilation path

[0032] 4. Ram air inlet

[0033] 4L Left side ram air intake

[0034] 4R Right side ram air intake

[0035] 5 Connectivity Path

[0036] 5L Left-side connecting path

[0037] 5R Right-side Connectivity Path

[0038] 6. Control valve

[0039] 6L Left-side regulating valve

[0040] 6R Right side regulating valve

[0041] 7. Control Department

[0042] 7L Left side control unit

[0043] 7R Right-side control unit

[0044] 8 Second ventilation path

[0045] 8L Left Second Ventilation Path

[0046] 8R Right-side second ventilation path

[0047] 9. Mixing Chamber

[0048] C. Air Conditioning Components Compartment Detailed Implementation

[0049] Below, in conjunction with Figure 1The ventilation system for the air conditioning module compartment (also referred to as the integrated air conditioning module compartment ventilation system) according to the embodiments of the present invention will be described.

[0050] (The overall structure of the ventilation system in the air conditioning component compartment)

[0051] like Figure 1 As shown, the ventilation system for the air conditioning component compartment includes: an air conditioning component 1, which is disposed in the air conditioning component compartment C and can deliver temperature-regulated air; an air supply component 2, which has an air outlet for delivering air into the air conditioning component compartment C; and a ventilation path that connects the air conditioning component 1 and the air supply component 2 to supply the air delivered by the air conditioning component 1 to the air supply component 2.

[0052] Here, as Figure 1 As shown, the ventilation system for the air conditioning component compartment also includes a ram air inlet 4; and the ventilation path includes: a first ventilation path 3, which supplies the air introduced by the ram air inlet 4 to the air supply component 2; and a connecting path 5, which supplies the air delivered by the air conditioning component 1 to the first ventilation path 3.

[0053] In addition, such as Figure 1 As shown, the ventilation system for the air conditioning component compartment also includes: a regulating valve 6, which is disposed in the communication path 5 and controls the airflow state in the communication path 5; and a control unit 7, which controls the regulating valve 6 (for example, also controls the air conditioning component 1).

[0054] Here, as Figure 1 As shown, the ventilation path also includes a second ventilation path 8, which delivers air from the air conditioning unit 1 to the cabin (not shown, such as the cockpit, passenger cabin, etc.), and the connecting path 5 connects the middle of the first ventilation path 3 with the middle of the second ventilation path 8.

[0055] In addition, such as Figure 1 As shown, the air conditioning component compartment ventilation system also includes a mixing chamber 9, which mixes the air supplied by the second ventilation path 8 with the recirculated air from the aircraft's recirculation system (not shown) before delivering it to the cabin.

[0056] (Air conditioning components)

[0057] Air conditioning component 1 can deliver air that has been conditioned to the desired temperature.

[0058] Here, as Figure 1 As shown, the air conditioning components 1 are arranged in pairs (i.e., distributed on the left and right sides of the aircraft's centerline), including the left air conditioning component 1L and the right air conditioning component 1R.

[0059] Air conditioning component 1 is the core component of the air conditioning system. It can regulate the bleed air from the air source system (usually engine or APU bleed air) into high-pressure, low-temperature gas, and then supply it into the mixing chamber 9 to mix with the recirculated air from the aircraft's recirculation system. The mixture is then supplied to the cabin to provide fresh air for the occupants and create a suitable temperature and pressure environment.

[0060] Since the ventilation demand of the air conditioning component compartment C is highest under hot weather conditions, the following explanation uses a long-range wide-body passenger aircraft as an example based on hot weather conditions. The maximum heat load of the air conditioning component compartment C under hot weather conditions is 3KW, the maximum flow rate of the air conditioning component C is 2kg / s, the outlet flow rate of the air conditioning component 1 at ground level is about 1.5kg / s, and the outlet temperature is about -10℃. Therefore, calculations show that, under hot weather ground conditions, to meet the ventilation requirement of the air conditioning component compartment C not exceeding 80°C, the cooling air from the outlet of air conditioning component 1 needs to be 0.04 kg / s. This flow rate accounts for only 2.6% of the flow rate of air conditioning component 1 under normal operating conditions, and will not exceed the maximum flow capacity of air conditioning component 1D. Compared with the 0.1 kg / s high-pressure bleed air required for the expansion of the turbofan in traditional air conditioning components, this flow rate can be reduced by 60%. In terms of pressure, the outlet pressure of the component is 66 mbar higher than the outside air pressure at ground level, which can ensure that the airflow can be smoothly diffused to the air conditioning component compartment C through the air supply component 2. Therefore, it is feasible and economical to draw high-pressure low-temperature gas from the outlet of air conditioning component 1 for ventilation and heat dissipation of the air conditioning component compartment C. This can reduce the high-pressure bleed air pipeline, turbofan, and ground air inlet of the traditional air conditioning component compartment ventilation system, and reduce the waste of high-pressure bleed air and additional heat load input caused by turbofan expansion, effectively reducing system weight, reducing engine bleed air, and improving aircraft economy.

[0061] (Air supply components)

[0062] Air supply component 2 is used to supply air into the air conditioning component compartment C.

[0063] Here, as Figure 1 As shown, the air supply component 2 is a flute-shaped tube with multiple air outlets opening into the air conditioning component compartment C.

[0064] In addition, such as Figure 1 As shown, the air supply components 2 are arranged in pairs (i.e., distributed on the left and right sides of the aircraft's centerline), including the left air supply component 2L and the right air supply component 2R.

[0065] (Ram air inlet)

[0066] The ram air inlet 4 can deliver outside air to the air supply component 2 via the first ventilation path 3 when the aircraft is in flight, and then deliver it to the air conditioning component compartment C via the air supply component 2.

[0067] Here, as Figure 1 As shown, the ram air inlets 4 are arranged in pairs (i.e., distributed on the left and right sides of the aircraft's centerline), including the left ram air inlet 4L and the right ram air inlet 4R.

[0068] (First ventilation path)

[0069] The first ventilation path 3 can supply air introduced by the ram air inlet 4 to the air supply component 2.

[0070] Here, as Figure 1 As shown, one end of the first ventilation path 3 is connected to the ram air inlet 4, and the other end is connected to the air supply component 2.

[0071] In addition, such as Figure 1 As shown, the first ventilation paths 3 are arranged in pairs (i.e., distributed on both sides of the aircraft's centerline), including the left first ventilation path 3L and the right first ventilation path 3R.

[0072] (Connectivity path)

[0073] The connecting path 5 can supply the air delivered by the air conditioning component 1 to the first ventilation path 3.

[0074] Here, as Figure 1 As shown, one end of the connecting path 5 is connected to the middle of the first ventilation path 3, and the other end is connected to the middle of the second ventilation path 8.

[0075] In addition, such as Figure 1 As shown, the connecting paths 5 are arranged in pairs on the left and right sides (i.e., distributed on both sides of the aircraft's centerline), including the left connecting path 5L and the right connecting path 5R.

[0076] (Second ventilation path)

[0077] The second ventilation path 8 delivers air from the air conditioning unit 1 to the cabin.

[0078] Here, as Figure 1 As shown, one end of the second ventilation path 8 is connected to the air conditioning component 1, and the other end is connected to the mixing chamber 9.

[0079] In addition, such as Figure 1 As shown, the second ventilation paths 8 are arranged in pairs (i.e., distributed on both sides of the aircraft's centerline), including the left second ventilation path 8L and the right second ventilation path 8R.

[0080] (Regulating valve)

[0081] The regulating valve 6 controls the airflow in the connecting path 5.

[0082] Here, the regulating valve 6 is preferably positioned to cut off the flow of air in the connecting path 5.

[0083] In addition, such as Figure 1 As shown, the regulating valves 6 are arranged in pairs on the left and right sides (i.e., distributed on the left and right sides of the aircraft's centerline), including the left regulating valve 6L and the right regulating valve 6R.

[0084] (Control Department)

[0085] The control unit 7 controls the regulating valve 6.

[0086] Here, the control unit 7 controls the operation of the air conditioning component 1 and controls the opening degree of the regulating valve 6.

[0087] In addition, such as Figure 1 As shown, the control units 7 are arranged in pairs (i.e., distributed on the left and right sides of the aircraft's centerline), including the left control unit 7L and the right control unit 7R.

[0088] (Example of the operation of the ventilation system in the air conditioning component compartment)

[0089] 1) Under ground conditions (i.e. when the aircraft is on the ground), when the air conditioning component 1 is working normally, the control unit 7 controls the regulating valve 6 to open to a certain degree according to the built-in control command. As a result, a portion of the bleed air sent out by the air conditioning component 1 is transported to the air supply component 2 through the first ventilation path 3, and then distributed by the air supply component 2 to the air conditioning component compartment C for ventilation and heat dissipation.

[0090] 2) Under ground conditions, when the air conditioning component 1 on one side fails, the control unit 7 controls the regulating valve 6 on that side to close, and the ventilation system of the air conditioning component compartment on that side is shut down.

[0091] 3) Under ground conditions, when a regulating valve 6 on one side fails to open or is stuck in a certain position, the control unit 7 does not perform any control on the air conditioning component 1 on that side; when a regulating valve 6 on one side fails to close, the control unit 7 controls the regulating valve 6 on the other side to increase its opening degree and increase the ventilation volume.

[0092] 4) Under ground conditions, when the control unit 7 receives a trim air leakage signal, the control unit 7 sends a signal to increase the opening of the regulating valves 6 on both sides to suppress the temperature rise in the air conditioning component compartment caused by air leakage from the trim system into the air conditioning component compartment; when the control unit 7 receives a PACK air leakage signal, the control unit controls the air conditioning component 1 and regulating valve 6 on the leaking side to close, and increases the opening of the regulating valve 6 on the opposite side.

[0093] 5) During flight, the control unit 7 controls the two regulating valves 6 to close, and introduces external ram air from the two ram air inlets 4 to ventilate the air conditioning component compartment C.

[0094] 6) During flight, after the control unit 7 receives a trim air leakage signal or a PACK air leakage signal, the control unit 7 shuts down the corresponding side trim system or air conditioning component 1.

[0095] (Main effects of this implementation method)

[0096] According to the ventilation system of the air conditioning component compartment of this embodiment, when the aircraft is in flight, the air introduced by the ram air inlet 4 can be supplied to the air supply component 2 through the first ventilation path 3, and then sent out to the air conditioning component compartment C through the air outlet of the air supply component 2, so as to ventilate and dissipate heat in the air conditioning component compartment C; on the other hand, when the aircraft is on the ground, the air supplied by the air conditioning component 1 can be supplied to the first ventilation path 3 through the connecting path 5, and then supplied to the air supply component 2 through the first ventilation path 3, so as to be sent out to the air conditioning component compartment C through the air outlet of the air supply component 2, so as to ventilate and dissipate heat in the air conditioning component compartment C.

[0097] In particular, the ventilation system for the air conditioning component compartment according to this embodiment, compared with the case where ground air inlets, high-pressure bleed air pipes, etc. are provided for ventilation and heat dissipation in the air conditioning component compartment C when the aircraft is on the ground, helps to simplify the overall structure of the ventilation system, reduce system weight, reduce engine bleed air, optimize installation space, and improve aircraft economy; and by bleeding high-pressure low-temperature gas from the outlet of the air conditioning component 1 for ventilation and heat dissipation in the air conditioning component compartment C, it can also reduce the waste of high-pressure bleed air and the input of additional heat load caused by turbofan expansion, reduce the bleed air volume to the flow rate required for turbofan expansion (the reduction can be up to 60%), and improve aircraft economy.

[0098] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments.

[0099] For example, in the above embodiment, the ram air inlet 4, the air supply component 2, the first ventilation path 3, the air conditioning component 1, the connecting path 5, the regulating valve 6, the control unit 7, and the second ventilation path 8 are respectively arranged in left and right pairs, but it is not limited to this, and only one side may be retained.

[0100] Furthermore, in the above embodiment, the connecting path 5 connects the middle of the first ventilation path 3 with the middle of the second ventilation path 8, but it is not limited to this. The connecting path 5 can also be set independently of the second ventilation path 8. That is, the air delivered by the air conditioning unit 1 can be directly delivered to the first ventilation path 3 without passing through the second ventilation path 8 using the connecting path 5. Of course, the connecting path 5 can also be set independently of the first ventilation path 3. That is, the air delivered by the air conditioning unit 1 can be directly delivered to the air supply component 2 without passing through the first ventilation path 3.

[0101] It should be understood that within the scope of this invention, the various parts of the embodiments can be freely combined, or the various parts of the embodiments can be appropriately modified or omitted.

Claims

1. A ventilation system for an air conditioning component compartment, characterized in that, include: An air conditioning unit, which is located in the air conditioning unit compartment and can deliver temperature-regulated air out. An air supply component having an air outlet for supplying air toward the air conditioning unit compartment; as well as A ventilation path connects the air conditioning unit to the air supply component to supply air delivered by the air conditioning unit to the air supply component.

2. The ventilation system for the air conditioning component compartment according to claim 1, characterized in that, It also includes a ram air intake. The ventilation path includes: A first ventilation path supplies air introduced through the ram air inlet to the air supply component; and A connection path that supplies air delivered by the air conditioning unit to the first ventilation path.

3. The ventilation system for the air conditioning component compartment according to claim 2, characterized in that, Also includes: A regulating valve is disposed in the connecting path and controls the airflow state in the connecting path; as well as The control unit controls the regulating valve.

4. The ventilation system for the air conditioning component compartment according to claim 3, characterized in that, The ventilation path also includes a second ventilation path that delivers air from the air conditioning unit to the cabin. The connecting path connects the middle of the first ventilation path with the middle of the second ventilation path.

5. The ventilation system for the air conditioning component compartment according to claim 4, characterized in that, It also includes a mixing chamber that mixes the air supplied by the second ventilation path with the recirculated air from the recirculation system before delivering it to the cabin.

6. The ventilation system for the air conditioning component compartment according to claim 4, characterized in that, The ram air inlet, the air supply component, the first ventilation path, the air conditioning component, the connecting path, the regulating valve, and the second ventilation path are arranged in pairs on the left and right sides, respectively.

7. The ventilation system for the air conditioning component compartment according to any one of claims 3 to 6, characterized in that, The regulating valve can cut off the flow of air in the connecting path.

8. The ventilation system for the air conditioning component compartment according to any one of claims 1 to 6, characterized in that, The air supply component is a flute-shaped tube.

Images