# US 2014/0151004 A1 · Internal Heat Exchanger for an Air Conditioning System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0151004 A1 - Document ID: US20140151004A1 - Status: Published application - Kind: A1 - Application number: 14/090,442 - Filed: 2013-11-26 - Published: 2014-06-05 - Earliest claimed: 2012-11-26 - Assignees: TI Automotive Engineering Centre (Heidelberg) GmbH - Applicants: TI Automotive Engineering Centre (Heidelberg) GmbH - Inventors: Denny Liers; Dominik Kempf; Matt Garrisi; Charles Thrift - Web page: https://patentgrep.com/patent/US20140151004A1 ## CPC - F28D 7/10: the conduits being arranged one within the other, e.g. concentrically {(multiple wall tubes for leak detection F28F1/003)} - F25B 40/00: Subcoolers, desuperheaters or superheaters - F28D 7/082: {with serpentine or zig-zag configuration} - F28F 1/40: the means being only inside the tubular element - F28F 13/06: by affecting the pattern of flow of the heat-exchange media {(F28F13/003 takes precedence; static flow control means in header boxes F28F9/026)} - 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) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) ## Abstract An internal heat exchanger for an air conditioning system, comprising an outer tube and a line structure arranged inside the outer tube defining a meandering serpentine first flow channel, with the second flow channel formed between the outer tube and the line structure. The first flow channel is formed by extruded components joined together to form a unitary structure inserted into the second flow channel which includes facing channel elements defining a serpentine path and two shells adhered to the channel elements defining the sides of the flow path and having fins extending perpendicular to the base disposed in the second flow channel. ## Claims ### Claim 1 An internal heat exchanger for an air conditioning system, comprising an outer tube and a line structure arranged inside the outer tube, wherein the line structure includes a first flow channel, and wherein a second flow channel is formed between the outer tube and line structure, characterized in that the first flow channel has a meandering configuration. ### Claim 2 (depends on 1) The internal heat exchanger according to claim 1, wherein said first flow channel has a serpentine configuration. ### Claim 3 (depends on 1) The internal heat exchanger according to claim 1, characterized in that the outside of the line structure includes heat conducting ribs. ### Claim 4 (depends on 3) The internal heat exchanger according to claim 3, characterized in that the heat conducting ribs extend until into the region of the inner wall of the outer tube. ### Claim 5 (depends on 1) The internal heat exchanger according to claim 1, characterized in that the line structure consists of multiple parts. ### Claim 6 (depends on 1) The internal heat exchanger according to claim 1, characterized in that the line structure interconnected by way of channel elements includes shells and are provided with heat conducting ribs. ### Claim 7 (depends on 6) The internal heat exchanger according to claim 6, characterized in that there are two channel elements which are comb-shaped with projections defining a series of parallel walls joined by semi-circular curved walls. ### Claim 8 (depends on 7) The internal heat exchanger according to claim 7, wherein said projection of one channel element is spaced between the projection of the other channel element. ### Claim 9 (depends on 8) The internal heat exchanger according to claim 8, characterized in that the elements of the line structure consist of metallic material. ### Claim 10 (depends on 9) The internal heat exchanger according to claim 9, characterized in that the elements of the line structure are firmly bonded with each other. ### Claim 11 (depends on 1) The internal heat exchanger according to claim 1, characterized in that the line structure is inserted into the outer tube. ### Claim 12 (depends on 1) The internal heat exchanger according to claim 1, characterized in that faces of the line structure accommodate pipe sockets, wherein the pipe sockets are connected with the first flow channel so as to be able to carry a flow. ### Claim 13 (depends on 1) The internal heat exchanger according to claim 1, characterized in that faces of the outer tube are sealed with a respective lid, wherein the lids exhibit pipe joints, which are connected with the first flow channel and the second flow channel. ### Claim 14 (depends on 1) The internal heat exchanger according to claim 1, characterized in that the inner diameter of the outer tube measures between 25 mm and 35 mm. ### Claim 15 (depends on 1) The internal heat exchanger according to claim 1, characterized in that the width of the first flow channel measures between 3.5 mm and 5.5 mm. ### Claim 16 (depends on 1) The internal heat exchanger according to claim 1, characterized in that the first flow channel includes at least sections having a cross section that is rectangular. ### Claim 17 (depends on 1) The internal heat exchanger according to claim 1, characterized in that it is designed for use in a mobile air conditioning system. ### Claim 18 (depends on 8) The internal heat exchanger according to claim 8, wherein said first flow channel has a cross section that is rectangular.