# US 2019/0170446 A1 · Multi-tube parallel heat spreader > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170446 A1 - Document ID: US20190170446A1 - Status: Published application - Kind: A1 - Application number: 15/833,717 - Filed: 2017-12-06 - Published: 2019-06-06 - Earliest claimed: 2017-12-06 - Assignees: FORCECON TECHNOLOGY Co., Ltd. - Applicants: Forcecon Technology Co., Ltd. - Inventors: Sin-Wei HE; Chao-Hao Yeh; Wei-Han Huang; Yong-Da Peng - Web page: https://patentgrep.com/patent/US20190170446A1 ## CPC - 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 15/046: {characterised by the material or the construction of the capillary structure} - H05K 7/20336: {Heat pipes, e.g. wicks or capillary pumps} - F28D 1/047: the conduits being bent, e.g. in a serpentine or zig-zag - F28D 1/05316: {Assemblies of conduits connected to common headers, e.g. core type radiators (F28D1/05366 takes precedence)} - H05K 7/20263: {Heat dissipaters releasing heat from coolant} - 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) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract A multi-tube parallel heat spreader has at least three conduits disposed in parallel; a first connector fitted onto the first end of each conduit, with one side of the first connector configured with a first connecting plughole for the first end of each conduit to be inserted into, and a first connecting passage inside the first connector that is communicated to each first connecting plughole; a second connector fitted onto the second end of each conduit, with one side configured with a second connecting plughole for the second end of each conduit to be inserted into, and a second connecting passage inside the second connector that is communicated to each second connecting plughole; a working fluid contained in the vacuum interior of each conduit and the first and second connector; a heat conduction base abutting and combined with the conduits, including a heat conductive surface and a supporting surface. ## Claims ### Claim 1 A multi-tube parallel heat spreader comprising: at least three conduits, disposed in parallel, each conduits including a first end and a second end; a first connector, fitted onto the first end of said at least three conduits, with one side of the first connector configured with a first connecting plughole for the first end of each of said at last three conduits to be inserted into, and a first connecting passage inside the first connector that is communicated to each first connecting plughole; a second connector, fitted onto the second end of each of said at least three conduits, with one side of the second connector configured with a second connecting plughole for the second end of each of said at least three conduits to be inserted into, and a second connecting passage inside the second connector that is communicated to each second connecting plughole; a working fluid, contained in a free state inside said at least three conduits, said first connector and said second connector, the interiors of said at least three conduits, said first connector and said second connector are in a vacuum state; and at least one heat conduction base, butting and combined with said at least three conduits in at least one position, each of said heat conduction bases including a heat conductive surface and a supporting surface corresponding to said conduits. ### Claim 2 (depends on 1) The device defined in claim 1, wherein the outer diameter of said at least three conduits is from 3 mm to 10 mm, and length is from 100 mm to 1000 mm. ### Claim 3 (depends on 2) The device defined in claim 2, wherein the outer side of at least any one of the first connector or second connector is further configured with a planar heat conduction portion. ### Claim 4 (depends on 3) The device defined in claim 3, wherein the supporting surface of said heat conduction base is further configured with at least three caulking grooves for said at least three conduits to be embedded into, and the two opening sides of each caulking groove is respectively formed into a riveted flange by means of rolling, said riveted flange to be used as a limit against the corresponding conduit. ### Claim 5 (depends on 4) The device defined in claim 4, wherein said at least three conduits comprises a heating evaporator section and a cooling condenser section, and the heat conduction base abuts and is combined with at least any one of the heating evaporator section or the cooling condenser section. ### Claim 6 (depends on 5) The device defined in claim 5, wherein the tube sections of said at least three conduits corresponding to the exterior of the heat conduction base are further formed with one or more than one bent portions. ### Claim 7 (depends on 6) The device defined in claim 6, wherein the interior of each of the conduits is further configured with groove-style capillary tissues. ### Claim 8 (depends on 7) The device defined in claim 7, wherein the percentage of said working fluid relative to the internal space of said at least three conduits, the first connector and the second connector is from 10% to 80%. ### Claim 9 (depends on 8) The device defined in claim 8, wherein said first connector and second connector are shaped as a rectangular hollow enclosure. ### Claim 10 (depends on 8) The device defined in claim 8, wherein said first connector and second connector are formed by sealing the two ends of a tube body.