Semi-closed air circulation system adopting centrifugal compressor to supercharge, ram and supplement air

An air circulation system, centrifugal compressor technology, used in air handling equipment, aircraft parts, transportation and packaging, etc.

Active Publication Date: 2021-09-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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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 adopting centrifugal compressor to supercharge, ram and supplement air
  • Semi-closed air circulation system adopting centrifugal compressor to supercharge, ram and supplement air
  • Semi-closed air circulation system adopting centrifugal compressor to supercharge, ram and supplement air

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Embodiment Construction

[0035] 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.

[0036] 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 adopting a centrifugal compressor to supercharge, ram and supplement air. The semi-closed air circulation system is mainly composed of a power turbine, a first-stage compressor, a second-stage compressor, a cooling turbine, a three-flow heat exchanger, a heat regenerator, a condenser, a water separator and the like. According to the system, engine bleed air is used for directly driving the power turbine to output shaft work to drive the semi-closed system to work, pre-cooling and pressure reducing components of a classic bleed air system are omitted, and the engine bleed air amount and the overall weight of the system are reduced under the same refrigerating capacity; an engine bleed air system is isolated from an air circulation system, the influence of engine power state change on the air circulation system is isolated, and the reliability of the air circulation system is improved; and an open system is adopted for air supply of the cabin, ram air outside the cabin is used for supplementing air for the cabin, the pollution link of air entering the cabin is omitted, the air quality in the cabin is improved, the refrigerating capacity of an air circulation system is adjusted in time according to the heat load in the cabin, and the air entraining amount of an engine can be further reduced.

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) Under 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 components such as a precooler and an absolute pressure regulator to cool down and depressurize the bleed air 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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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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