# US 10,502,458 B2 · Solar collector insulation and obtained product > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,458 B2 - Document ID: US10502458B2 - Status: Granted - Kind: B2 - Application number: 15/664,406 - Filed: 2017-07-31 - Published: 2018-04-05 - Granted: 2019-12-10 - Earliest claimed: 2016-08-01 - Assignees: Saint-Gobain Isover - Applicants: Saint-Gobain Isover - Inventors: Christophe Bareyt - Web page: https://patentgrep.com/patent/US10502458B2 ## CPC - F24S 80/65: characterised by the material - F24S 10/00: Solar heat collectors using working fluids - F24S 10/40: in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors - F24S 80/60: Thermal insulation (transparent coverings F24S80/50) - F24S 2025/011: {Arrangements for mounting elements inside solar collectors; Spacers inside solar collectors} - F24S 2025/021: {Sealing means between support elements and mounting surface} - Y02E 10/44: Heat exchange systems - F24S: SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS (for producing mechanical power from solar energy F03G6/00) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A solar collector, in particular a solar thermal collector, is formed of at least one circuit transporting a heat transfer fluid, and includes at least one insulator, in particular in the form of at least one layer, formed of flakes and/or nodules of mineral wool(s) or mineral fibers. A process is provided for insulating or manufacturing a solar collector into which flakes and/or nodules of mineral wool(s) and/or mineral fibers are blown, as insulator, in particular without adding binder or water. ## Claims ### Claim 1 A solar thermal collector comprising: a frame having at least one wall forming a back of the collector; at least one circuit configured to transport a heat transfer fluid; and at least one insulator in the form of at least one layer, formed of flakes and/or nodules of one or more mineral wools or mineral fibers, wherein the at least one insulator formed of flakes and/or nodules of one or more mineral wools or mineral fibers is between the circuit transporting the heat transfer fluid and said back wall, and is in contact with the circuit transporting the heat transfer fluid. ### Claim 2 (depends on 1) The solar collector according to claim 1, wherein the collector is a glazed flat-plate collector and comprises at least one glazing unit. ### Claim 3 (depends on 1) The solar collector according to claim 1, wherein the flakes and/or nodules have a size of less than 50 mm, for at least 50% by weight of the flakes, between 5 and 25 mm. ### Claim 4 (depends on 3) The solar collector according to claim 3, wherein the flakes and/or nodules have a size of less than 30 mm. ### Claim 5 (depends on 1) The solar collector according to claim 1, wherein the flakes and/or nodules are made of one or more glass wools or glass fibers, with a micronaire of less than 25 l/min, and/or are made of one or more rock wools or rock fibers, with a fasonaire of greater than 150 mmcw. ### Claim 6 (depends on 5) The solar collector according to claim 5, wherein the flakes and/or nodules have a micronaire between 3 and 18 l/min, and a fasonaire between 200 and 350 mmcw. ### Claim 7 (depends on 1) The solar collector according to claim 1, wherein the insulator further comprises aerogels. ### Claim 8 (depends on 1) The solar collector according to claim 1, wherein the insulator comprises a content of organic compounds of less than 4% by weight, and is free of one or more organic compounds, and the insulator comprises a content of anti-dusting agents of less than 1% by weight, and is free of one or more anti-dusting agents. ### Claim 9 (depends on 8) The solar collector according to claim 8, wherein a content of organic compounds is less than 1.5% by weight. ### Claim 10 (depends on 1) The solar collector according to claim 1, wherein the insulator comprises a binder content of less than 4% by weight, and a water content of less than 2% by weight, the insulator being free of one or more binders. ### Claim 11 (depends on 1) The solar collector according to claim 1, wherein the density of the insulator is between 10 and 100 kg/m3. ### Claim 12 (depends on 11) The solar collector according to claim 11, wherein the density of the insulator is between 25 and 80 kg/m3. ### Claim 13 (depends on 1) A process for insulating or manufacturing a solar collector for obtaining the collector according to claim 1, wherein the flakes and/or nodules of one or more mineral wools and/or mineral fibers are blown, as insulator, into the collector. ### Claim 14 (depends on 13) A process according to claim 13, wherein the blowing is carried out without adding binder or water. ### Claim 15 (depends on 13) A process according to claim 13, wherein a flow of blown material comprises, besides the flakes and/or nodules of one or more mineral wools and/or mineral fibers: less than 2% by weight of moisture, one or more additional insulating materials, one or more additives, at less than 1% by weight, for example one or more additives of mineral oil, antistatic and silicone. ### Claim 16 (depends on 15) The process according to claim 15, wherein the flow of blown material further comprises: less than 4% of binder already polymerized or crosslinked or cured or hardened or that has already reacted; and one or more other components incapable of binding the flakes/nodules together and free of water. ### Claim 17 (depends on 13) A process according to claim 13, wherein the flakes and/or nodules have less than 4% by weight of binder, and in that a content of anti-dusting agents in the blown material is less than 1% by weight, the blown material being free of one or more anti-dusting agents. ### Claim 18 (depends on 13) A process according to claim 13, wherein a blowing gas stream is oriented substantially parallel to a mid-plane of a space to be insulated, with an angle of incidence of the blowing stream with said plane of between +5° and −5°, a blowing flow rate additionally being of the order of 50 to 200 g/s, and/or a blowing gas pressure being between 70 and 500 mbar. ### Claim 19 (depends on 13) A blowing device for the implementation of the process according to claim 13, and suitable for insulation of solar collectors, comprising at least one diffuser having an outlet area capable of fitting into at least one portion of an opening that opens onto a space to be insulated, so that a flow leaving the at least one diffuser is essentially parallel to a mid-plane of the space to be insulated.