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System and method for heat balance and transport for aircraft hydraulic systems

A hydraulic system, hydraulic technology, applied in the direction of aircraft power transmission, fluid pressure actuation system components, aircraft transmissions, etc., can solve the problem of no hydraulic system heat exchanger, etc.

Active Publication Date: 2015-01-14
THE BOEING CO
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  • Application Information

AI Technical Summary

Problems solved by technology

Other known aircraft do not have hydraulic system heat exchangers and address hydraulic fluid heating by constraining and limiting the operation of the aircraft when the external ambient temperature is above a predetermined threshold

Method used

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  • System and method for heat balance and transport for aircraft hydraulic systems
  • System and method for heat balance and transport for aircraft hydraulic systems
  • System and method for heat balance and transport for aircraft hydraulic systems

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Embodiment approach

[0026] Clause 1. A thermal management system, comprising: a first hydraulic system for circulating a first hydraulic fluid at a first temperature; a second hydraulic system for circulating a second hydraulic fluid at a higher temperature than the first A second hydraulic fluid at a temperature; a heat exchanger, coupling the first hydraulic system to the second hydraulic system, wherein the heat exchanger is configured to connect the first hydraulic fluid to the first hydraulic fluid Exchange heat between two hydraulic fluids.

[0027] Clause 2. The thermal management system according to Clause 1, wherein the second hydraulic system further includes: a pump; and a tank drain coupled to the pump and the heat exchanger.

[0028] Clause 3. The thermal management system of clause 1, wherein the first hydraulic system further includes a pump, and the heat exchanger is coupled to the first hydraulic system upstream of the pump.

[0029] Clause 4. The thermal management system according to...

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PUM

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Abstract

The invention relates to a system and a method for heat balance and transport for aircraft hydraulic systems. A thermal management system includes a first hydraulic system for circulating a first hydraulic fluid at a first temperature and a second hydraulic system for circulating a second hydraulic fluid at a second temperature that is higher than the first temperature. The thermal management system also includes a sealed heat transfer device coupled between the first hydraulic system and the second hydraulic system. The sealed heat transfer device is not in flow communication with either of the first hydraulic system and the second hydraulic system. The sealed heat transfer device is configured to transfer heat from the second hydraulic fluid to the first hydraulic fluid.

Description

Technical field [0001] The present disclosure relates generally to thermal management, and more specifically, to systems and methods for balancing and transferring heat among hydraulic systems in aircraft. Background technique [0002] In at least some known aircraft, heat from one or more hydraulic systems is distributed into the fuel through a heat exchanger located inside the fuel tank. Other known aircraft do not have a hydraulic system heat exchanger, and when the external ambient temperature is above a predetermined threshold, the operation of the aircraft is restricted and restricted to address the heating of the hydraulic fluid. In addition, some known aircraft include thermostat control to selectively bypass the heat exchanger for hydraulic fluid, thereby maintaining heat and reducing pressure loss in the hydraulic circuit when the external ambient temperature is below a predetermined threshold. In addition, some known aircraft use the circulating flow of the hydraulic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/04F15B21/042
CPCF15B21/042B64C25/22B64C13/36F15B18/00F15B1/26F15B2211/20576F15B2211/611F15B2211/62
Inventor 廖健民
Owner THE BOEING CO
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