Dryer for portable electronics

• US 8,689,461 B1
• Filed: 04/24/2013
• Issued: 04/08/2014
• Est. Priority Date: 11/08/2012
• Status: Active Grant

• Current Assignee: TekDry International, Inc.
• Original Assignee: TekDry, LLC
• Inventors: Cookson, Adam Roy, Jones, Eric Andrew
• Primary Examiner(s): Rinehart, Kenneth
• Assistant Examiner(s): MCCORMACK, JOHN PATRICK
• Application Number:
  US13/869,812
• Time in Patent Office: 349 Days
• Field of Search: 342/84, 342/87, 342/89, 342/94, 342/98, 342/99, 343/05, 343/60, 343/61, 343/63, 344/03, 345/21, 34/92, 346/24, 219/229, 219/255, 219/428, 219/453.11, 219/461.1, 219/462.1
• US Class Current: 34/403
• CPC Class Codes: F26B 3/205 the materials to be dried covering or being mixed with heated inert particles which may be recycled
• CPC Class Codes: F26B 5/04 by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum F26B11/049 and F26B17/128 take precedence
• CPC Class Codes: F26B 9/003 Small self-contained devices, e.g. portable
• CPC Class Codes: F26B 9/06 in stationary drums or chambers
• CPC Class Codes: H05B 3/42 non-flexible

Abstract

Systems and methods are described for conductively heated vacuum-based drying of portable electronic devices. For example, a portable electronic device that has been exposed to excessive liquid is placed inside a drying chamber. The drying chamber is closed and a drying routine commences. During the drying routine, the chamber is pressurized to a vacuum level sufficient to gasify liquids inside the device, and the device is conductively heated at least to replace latent heat of vaporization lost during the pressurization. Some embodiments include techniques relating to payment processing, monitoring and feedback control, decontamination, and/or other functionality.

Claims

1. A drying system for portable electronic devices, the system comprising:

a chamber configured to receive a portable electronic device;

a pressurization subsystem configured, when the portable electronic device is in the chamber, to produce a negative pressure environment within the chamber sufficient to gasify liquid in the portable electronic device; and

a heating subsystem comprising a thermal conduction assembly having a plurality of thermally conductive beads that are configured, when the portable electronic device is in the chamber, to at least partially conform to an external shape of the portable electronic device, the heating subsystem configured to heat the portable electronic device when it is in the chamber by generating heat and conducting the heat to the portable electronic device via the plurality of thermally conductive beads.

2. The system of claim 1, wherein the thermal conduction assembly further comprises at least one receptacle for the thermally conductive beads, the receptacle being configured to at least partially conform to the external shape of the portable electronic device and to conduct the heat to the portable electronic device via the beads.

3. The system of claim 1, wherein the thermal conduction assembly further comprises structure from which the thermally conductive beads hang in such a way that permits the beads to at least partially conform to the external shape of the portable electronic device and to conduct the heat to the portable electronic device.

4. The system of claim 1, wherein the thermal conduction assembly comprises structure to support the plurality of thermally conductive beads in such a way that permits the beads to at least partially conform to the external shape of the portable electronic device and to conduct the heat to the portable electronic device.

5. The system of claim 1, further comprising:

a user interaction subsystem comprising a display and means for user interaction, the user interaction subsystem configured to;

receive an instruction from a user via the means for user interaction to start a drying routine for drying the portable electronic device using the chamber, the pressurization subsystem, and the heating subsystem; and

displaying, to the user via the display, a status of performing the drying routine,

wherein the pressurization subsystem and the heating subsystem are configured to perform the drying routine in response to the instruction.

6. The system of claim 5, further comprising:

a non-transient, computer-readable memory having instructions stored thereon, which, when executed, cause a processor to direct operation of the pressurization subsystem and the heating subsystem according to information received via the user interaction subsystem.

7. The system of claim 5, further comprising:

a payment processing subsystem configured to receive a payment from the user and to authorize the payment,

wherein the pressurization subsystem and the heating subsystem are configured to perform the drying routine in response to the instruction only when the payment is authorized by the payment processing subsystem.

8. The system of claim 1, further comprising:

a monitoring subsystem comprising at least one sensor within the chamber configured to monitor at least one of internal pressure of the chamber, internal temperature of the chamber, internal humidity of the chamber, or functionality of the portable electronic device.

9. The system of claim 8, wherein the monitoring subsystem comprises:

an interface cable configured to communicate with the portable electronic device to determine the functionality of the portable electronic device.

10. The system of claim 1, further comprising:

a disinfecting subsystem configured to be actuated from outside the chamber to output a disinfecting agent within the chamber.

11. The system of claim 1, wherein the pressurization subsystem comprises a vacuum pump in substantially sealed fluid communication with the chamber.

18. The system of claim 1, wherein the plurality of thermally conductive beads are metallic.

12. A method for drying portable electronic devices, the method comprising:

receiving a portable electronic device in a chamber, the portable electronic device having an excessive amount of liquid;

pressurizing the chamber when the portable electronic device is in the chamber, so as to produce a negative pressure environment within the chamber sufficient to gasify the liquid in the portable electronic device;

maintaining the negative pressure environment within the chamber at least until the portable electronic device no longer has the excessive amount of liquid; and

heating the portable electronic device in the chamber conductively via a thermal conduction assembly while the negative pressure environment is maintained within the chamber, the heating being at least sufficient to replenish latent heat of vaporization lost from pressurizing the chamber, the thermal conduction assembly having a plurality of thermally conductive beads that are configured to at least partially conform to an external shape of the portable electronic device and to conduct the heat to the portable electronic device.

13. The method of claim 12, wherein the thermal conduction assembly comprises at least one receptacle containing at least some of the thermally conductive beads, the receptacle being configured to at least partially conform to the external shape of the portable electronic device and to conduct the heat to the portable electronic device.

14. The method of claim 12, further comprising:

receiving an instruction from a user via a user interaction subsystem;

performing a drying routine comprising the pressurizing step and the heating step in response to the instruction; and

displaying, to the user via the user interaction subsystem, a status of performing the drying routine.

15. The method of claim 14, further comprising:

associating a credential with the user and the drying routine;

receiving and validating the credential subsequent to performing the drying routine; and

permitting the user to retrieve the portable electronic device from the chamber only after receiving and validating the credential.

16. The system of claim 14, further comprising:

receiving payment from the user in association with performing the drying routine;

completing the drying routine only when the payment from the user is authorized.

17. The method of claim 12, further comprising:

receiving a measurement from within the chamber while maintaining the negative pressure environment within the chamber;

dynamically adjusting an amount of heat associated with the heating step and/or an amount of pressurization associated with the pressurizing step in response to the measurement.