# US 11,994,290 B2 · Heat transfer arrangements and methods of making heat transfer arrangements

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- Number: US 11,994,290 B2
- Document ID: US11994290B2
- Status: Granted
- Kind: B2
- Application number: 17/357,906
- Filed: 2021-06-24
- Published: 2021-10-21
- Granted: 2024-05-28
- Earliest claimed: 2017-08-25
- Assignees: Collins Engine Nozzles, Inc.
- Applicants: Delavan Inc.
- Inventors: Jason A. Ryon; Lev A. Prociw
- Web page: https://patentgrep.com/patent/US11994290B2

## CPC

- F23R 3/002: {Wall structures (F23R3/02 and F23R3/007 take precedence)}
- B23P 15/26: heat exchangers {or the like (making heat exchangers by methods covered by other subclasses B21D53/02)}
- F01D 25/145: {Thermally insulated casings}
- F23R 3/005: {Combined with pressure or heat exchangers}
- F23R 3/50: Combustion chambers comprising an annular flame tube within an annular casing (toroidal combustion chambers F23R3/52)
- F28D 15/0266: {with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers (F28D15/043 takes precedence)}
- F28D 15/0275: {Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores}
- F28D 15/0283: {Means for filling or sealing heat pipes}
- F28D 15/04: with tubes having a capillary structure
- F28D 15/046: {characterised by the material or the construction of the capillary structure}
- F05D 2230/22: by sintering
- F05D 2240/35: Combustors or associated equipment
- F05D 2260/208: using heat pipes
- F23R 2900/00018: Manufacturing combustion chamber liners or subparts
- F28D 2021/0026: {for combustion engines, e.g. for gas turbines or for Stirling engines}
- F23R: GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures F23C10/16)
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

A heat transfer arrangement includes two or more heat transfer cells. The heat transfer cells together define a boundary between a higher temperature region and a lower temperature region. Each of the two or more heat transfer cells includes two or more walls defining a fluid tight cavity. One or more wick is fused to an inner surface of one or more of the walls to wick liquid from a lower temperature portion of the cavity to a higher temperature portion of the cavity. Combustors having heat transfer arrangements with heat transfer cells and methods of making heat transfer arrangements are also described.

## Claims

### Claim 1

A method of making a heat transfer arrangement, comprising:
densely sintering a first portion of a powdered material to form a plurality of walls that define a fluid tight cavity of a heat transfer cell; and
porously sintering a second portion of the powdered material to form a wick fused to at least one of the plurality of walls.

### Claim 2 (depends on 1)

The method as recited in claim 1, further comprising:
fusing the wick to at least one of the plurality of walls;
removing powdered material from the fluid-tight cavity;
introducing a heat transfer fluid into the fluid-tight cavity; and
sealing the fluid-tight cavity from the environment external of the heat transfer cell.

### Claim 3 (depends on 1)

The method as recited in claim 1, wherein the plurality of walls includes a hot side wall.

### Claim 4 (depends on 1)

The method of claim 1, further comprising extending the at least one wick over a side wall of the heat transfer cell.

### Claim 5 (depends on 1)

The method of claim 1, wherein the at least one wick has a uniform thickness.

### Claim 6 (depends on 1)

The method of claim 1, wherein at least a portion of a cold side wall is not in contact with the at least one wick.