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A technology of connecting rod and connecting rod assembly, applied in the field of ram air fan assembly, can solve the problem of low airflow flowing through heat exchanger to remove heat and so on

Active Publication Date: 2017-06-27
HAMILTON SUNDSTRAND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although ram air works well under normal flight conditions, at lower flight speeds or when the aircraft is on the ground the pressure of the ram air is too low to provide sufficient airflow through the heat exchanger for use from the ECS adequately remove heat from

Method used

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Embodiment Construction

[0018] figure 1 A ram air fan assembly incorporating the present invention is shown. The ram air fan assembly 10 includes a fan housing 12 , a bearing housing 14 , an inlet housing 16 , an outer housing 18 , an inner housing 20 and a fan rotation assembly 21 . Fan housing 12 includes fan strut 22 , motor 24 (including motor rotor 25 and motor stator 26 ), thrust shaft 28 , thrust plate 30 and thrust bearing 32 . The bearing housing 14 includes a journal bearing shaft 34 and a shaft cap 36 . Fan housing 12 and bearing housing 14 together include connecting rod 38 and journal bearing 40 . Inlet housing 16 contains fan rotor 42 and inlet shroud 44 in addition to a portion of linkage 38 . Outer housing 18 includes junction box 46 and plenum chamber 48 . Inside the outer housing 18 is a diffuser 50 , a motor bearing cooling tube 52 and a cable delivery tube 54 . Rotating assembly 21 includes motor rotor 25 , thrust shaft 28 , bearing shaft 34 , shaft cap 36 , inlet shroud 44 a...

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Abstract

The present invention relates to connecting rods. A link for extending between a fan shroud and a shaft cap within a rotating assembly includes a threaded first end; a threaded second end; and an elongated portion between the first end and the second end. The connecting rod has a diameter to length ratio of about 1 to 40.810 to about 1 to 40.768.

Description

technical field [0001] The invention relates to an environment control system. In particular, the present invention relates to a ram air fan assembly for an aircraft environmental control system. Background technique [0002] The onboard Environmental Control System (ECS) provides conditioned air to the aircraft cabin. Conditioned air is air at the temperature, pressure and humidity required for the comfort and safety of aircraft passengers. At or near ground level, the ambient air temperature and / or humidity are often high enough that cooling of the air as part of the conditioning process is necessary before the air is delivered to the aircraft cabin. At flight altitudes, the ambient air is often much colder than desired and is at such a low pressure that it must be compressed to an acceptable pressure as part of the conditioning process. Compressing ambient air at flight altitude heats the resulting pressurized air sufficiently that the pressurized air must be cooled ev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/00
CPCF04D19/00F04D25/06F04D29/054F04D29/266F04D29/5806F05B2220/31Y10T29/49316F01D5/025
Inventor D.A.科森C.M.比尔斯
Owner HAMILTON SUNDSTRAND CORP