Heat exchanger with fluid guiding members

• US 9,733,026 B2
• Filed: 05/23/2011
• Issued: 08/15/2017
• Est. Priority Date: 06/10/2010
• Status: Expired due to Fees

• Current Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Original Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Inventors: Stieger, Rory Douglas
• Primary Examiner(s): Tran, Len
• Assistant Examiner(s): Jones, Gordon
• Application Number:
  US13/695,998
• Publication Number:
  US 20130048259A1
• Time in Patent Office: 2,276 Days
• Field of Search: 165 52, 165165, 165166
• CPC Class Codes: F28D 9/0037 the conduits for the other heat-exchange medium also being formed by paired plates touching each other F28D9/0043 takes precedence
• CPC Class Codes: F28F 9/0265 by using guiding means or impingement means inside the header box
• CPC Class Codes: Y10T 29/4935 Heat exchanger or boiler making

Abstract

A heat exchanger includes a heat exchanger core, a fluid path through the heat exchanger core, and a fluid guiding member. The fluid path has an inlet and an outlet. The fluid guiding member is adjacent to the inlet and/or outlet of the fluid path. The fluid guiding member is operable to change the direction of fluid flow.

Claims

1. A heat exchanger comprising:

a heat exchanger core comprising a plurality of corrugated heat exchanger plates;

a fluid path through the heat exchanger core, the fluid path running between adjacent heat exchanger plates and having an inlet at one side of the corrugated heat exchanger plates and an outlet at an opposing side of the corrugated heat exchanger plates; and

a corrugated fluid guiding member in series flow with the inlet and/or the outlet side of corrugations of one corrugated heat exchanger plate of the plurality of corrugated heat exchanger plates,

the corrugated fluid guiding member comprising an angled portion of each of the corrugations of the corrugated heat exchanger plate, wherein

the corrugated fluid guiding member is angled out of a plane of the corrugated heat exchanger plate so as to provide the corrugations of the corrugated heat exchanger plates with an out of plane geometry, which is operable to change the direction of fluid flow away from the plane of the corrugated heat exchanger plate, and

peaks and troughs of corrugations of the corrugated fluid guiding member and peaks and troughs of the corrugations of the corrugated heat exchanger plate are in-line when viewed in a direction perpendicular to the plane of the corrugated heat exchanger plate.

2. A heat exchanger as claimed in claim 1, wherein

the corrugated fluid guiding member changes the direction of fluid flow by approximately 30 degrees at the inlet of the fluid path and/or approximately 75 degrees at the outlet of the fluid path.

3. A heat exchanger as claimed in claim 1, wherein

the corrugated fluid guiding member comprises an aerofoil portion which is located between the fluid paths of neighboring pairs of corrugated heat exchanger plates.

4. A heat exchanger as claimed in claim 3, wherein

the aerofoil portion is located between alternate neighboring pairs of corrugated heat exchanger plates.

5. A heat exchanger as claimed in claim 3, wherein

the aerofoil portion is located between neighboring pairs of corrugated heat exchanger plates, and wherein aerofoil portions of adjacent neighboring pairs of corrugated heat exchanger plates are dissimilar.

6. A heat exchanger as claimed in claim 1, wherein

the corrugated fluid guiding member is integral with the corrugated heat exchanger plates.

7. A gas turbine engine comprising a heat exchanger as claimed in claim 1.