# US 2019/0314868 A1 · Method for Restoring Damaged Electronic Devices by Cleaning and Apparatus Therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0314868 A1 - Document ID: US20190314868A1 - Status: Published application - Kind: A1 - Application number: 16/314,908 - Filed: 2017-06-27 - Published: 2019-10-17 - Earliest claimed: 2016-07-06 - Assignees: Techsave A/S - Applicants: Techsave A/S - Inventors: Jonas Tedde; Henrik Leth - Web page: https://patentgrep.com/patent/US20190314868A1 ## CPC - B08B 3/12: by sonic or ultrasonic vibrations - F26B 3/00: Drying solid materials or objects by processes involving the application of heat (in specific machines or apparatus F26B9/00 - F26B19/00) - F26B 3/04: the gas or vapour circulating over or surrounding the materials or objects to be dried (F26B3/14 takes precedence) - F26B 5/04: by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum {(F26B11/049 and F26B17/128 take precedence)} - F26B 21/33: Humidity - F26B 21/35: Temperature; Pressure - F26B 9/06: in stationary drums or chambers - B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL - F26B: DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines A01D41/133; racks for drying fruit or vegetables A01F25/12; drying foodstuffs A23; drying hair A45D20/00; body-drying implements A47K10/00; drying household articles A47L; drying gases or vapours B01D; chemical or physical processes for dewatering or like separating liquids from solids B01D43/00; centrifugal apparatus B04; drying ceramics C04B33/30; drying yarns or fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry D06F; furnaces, kilns, ovens F27) ## Abstract A method and apparatus for regenerating damaged electronic device by a least one cleaning process and a least one drying process, by submerging one or more electronic devices into an aqueous cleaning liquid in a cleaning chamber (1), and subjecting the aqueous cleaning liquid and the one or more electronic devices to sonication. Drying of the one or more electronic devices is done by periodically heating the cleaning chamber (1) while subjecting the cleaning chamber to reduced pressure and where the cleaning and the drying are carried out in the same cleaning chamber. We hereby achieve a thorough cleaning and restoration of a damaged electronic device. ## Claims ### Claim at position 1 1-14. (canceled) ### Claim 15 A method comprising regenerating damaged electronic device by a least one cleaning process and a least one drying process, the cleaning process further comprising the steps of: submerging one or more electronic devices into an aqueous cleaning liquid in a cleaning chamber, subjecting the aqueous cleaning liquid and the one or more electronic devices to sonication the dying process comprises the step of: drying the one or more electronic devices wherein drying of the one or more electronic devices is done in a drying cycle by periodically heating the cleaning chamber and subjecting the cleaning chamber to reduced pressure and where the cleaning step and the drying step are carried out in the same cleaning chamber, and wherein the drying cycle comprises the steps of: a: heating air entering into the cleaning chamber to a temperature of at least 60° C. at a first reduced pressure of 0.5-0.9 bar, b: maintaining a chamber temperature of 35-80° C. and a second reduced pressure level of 0.5-0.9 bar, c: reducing the pressure to a third pressure level of 0.1-0.5 bar. ### Claim 16 (depends on 15) The method according to claim 15, further comprising repeating steps b-c in the drying cycle at least one, two, three, four, five, six, seven, eight, nine, ten or more times. ### Claim 17 (depends on 15) The method according to claim 15, wherein the frequency and/or the amplitude of the sonic waves is adjusted to the cleaning process and/or varied during at least one cleaning substep. ### Claim 18 (depends on 15) The method according to claim 15, wherein the periodical heating of the cleaning chamber provides a chamber temperature 20-100° C., such 35-80° C. or preferably as 45-70° C. ### Claim 19 (depends on 15) The method according to claim 15, wherein the aqueous cleaning liquid comprises water, such as tap water or demineralised water and optionally the aqueous cleaning liquid further comprises one or more detergents, such as one or more alkaline detergents or acid detergents, or detergents having amphoteric properties and/or mixtures thereof. ### Claim 20 (depends on 15) Apparatus comprising a damaged electronic restoration apparatus by means of a cleaning process according to claim 15, wherein the apparatus comprises: a pressure tight and/or airtight cleaning chamber, at least one liquid inlet arranged for at least partly fill the cleaning chamber with an aqueous cleaning liquid thereby submerging the damaged electronic in the aqueous cleaning liquid at least one liquid outlet arranged for emptying the cleaning chamber for aqueous cleaning liquid one or more sonic probes for subjecting the aqueous cleaning liquid and the electronic device to sonication, and at least one pumping means for subjecting the cleaning chamber to a reduced pressure and wherein the cleaning chamber additionally comprises: one or more air entering means for entering air into the chamber one or more temperature regulating means whereby the cleaning chamber is also configured as a drying chamber, to dry the regenerated electronic devices in a drying cycle having one or more drying steps under reduced pressure, which apparatus is configured so as to perform the drying cycle that comprises the steps of: a: the temperature controlling means heating air entering into the cleaning chamber to a temperature of at least 60° C. and the pumping means controlling the pressure so as to maintain at a first reduced pressure of 0.5-0.9 bar, b: maintaining a chamber temperature of 35-80° C. and the pumping means controlling the pressure to a second reduced pressure level of 0.5-0.9 bar, and c: the pumping means controlling the reducing the pressure to a third pressure level of 0.1-0.5 bar. ### Claim 21 (depends on 20) The apparatus as according to claim 20, wherein filling the cleaning chamber with liquid is done by the at least one pumping means applies a reduced pressure to the cleaning chamber and thereby sucking the aqueous cleaning liquid into the cleaning chamber through the at least one liquid inlet means. ### Claim 22 (depends on 20) The apparatus according claim 20, wherein the liquid inlet means is also functioning as liquid outlet means. ### Claim 23 (depends on 20) The apparatus as according claim 20, wherein the apparatus comprises at least one liquid tank for storing at least a part of the used aqueous cleaning liquid, and means for reuse of aqueous cleaning liquid or liquids in the one or more cleaning steps. ### Claim 24 (depends on 20) The apparatus according claim 20, wherein the cleaning chamber further comprises at least one condensation plate.