Semi-closed air circulation system using centrifugal compressor to pressurize ram air

A technology of air circulation system and centrifugal compressor, which is applied in air handling equipment, aircraft parts, transportation and packaging, etc., to achieve the effect of reducing refrigeration energy consumption, small water removal and large cooling capacity

Active Publication Date: 2022-05-03
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Claims
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Problems solved by technology

[0007] The present invention proposes a semi-closed air circulation system using a centrifugal compressor to pressurize ram air to supplement air in order to solve the deficiencies in the existing air circulation system

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  • Semi-closed air circulation system using centrifugal compressor to pressurize ram air

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other steps or elements.

[0...

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Abstract

The invention discloses a semi-closed air circulation system using a centrifugal compressor for boosting ram air to supplement air, which mainly consists of a power turbine, a first-stage compressor, a second-stage compressor, a cooling turbine, a three-stream heat exchanger, The system uses the engine bleed air to directly drive the power turbine output shaft power to drive the semi-closed system to work, eliminating the pre-cooling and decompression components of the classic bleed air system, and under the same cooling capacity Reduce the amount of engine bleed air and the overall weight of the system; realize the isolation of the engine bleed air system and the air circulation system, isolate the influence of the engine power state change on the air circulation system, and improve the reliability of the air circulation system; the cockpit air supply adopts an open type The system uses the ram air outside the cabin to supply air to the cabin, which reduces the pollution of the air entering the cabin and improves the air quality in the cabin. According to the heat load in the cabin, the cooling capacity of the air circulation system can be adjusted in time, which can further reduce the amount of engine bleed air.

Description

technical field [0001] The invention relates to a semi-closed air circulation system which uses ram air to supplement air, and belongs to the field of aircraft environment control. Background technique [0002] At present, the refrigeration components in the air circulation system used on aircraft mainly include simple ventilation, two-wheel booster, three-wheel booster and four-wheel booster, etc. The engine directly bleeds the air, and the bleed air passes through the refrigeration component. To provide cooling capacity for the cockpit and electronic equipment compartment, there are mainly the following problems: [0003] (1) In most engine power states, the temperature and pressure of the engine bleed air are relatively high, and the bleed air system is generally equipped with precoolers, absolute pressure regulators and other components to cool down the bleed air and reduce the pressure to adapt to air circulation The use of the system will cause unnecessary waste of bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D13/08B64D13/06
CPCB64D13/08B64D2013/0614B64D2013/064
Inventor 张大林陆启航张朋磊朱光亚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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