DRYER FOR PORTABLE ELECTRONICS

• US 20140157619A1
• Filed: 02/12/2014
• Published: 06/12/2014
• 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
• Granted Patent: US 10,088,230 B2
• Time in Patent Office: Days
• US Class Current: 34/245
• 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 5/16 by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
• 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 pressurization subsystem configured, when the portable electronic device is in a chamber, to produce a negative pressure environment within the chamber sufficient to gasify liquid in the portable electronic device; and

a thermal conduction assembly configured, when the portable electronic device is in the negative pressure environment within the chamber, to substantially conform in three dimensions to an external shape of the portable electronic device and to conduct heat to the portable electronic device sufficient to at least overcome latent heat of evaporation resulting from the gasifying of the liquid in the portable electronic device.

2. The system of claim 1, further comprising the chamber.

3. The system of claim 2, wherein:

the chamber is configured to concurrently receive a plurality of portable electronic devices; and

the thermal conduction assembly is configured, when the plurality of portable electronic devices is in the chamber, to substantially conform and to conduct heat concurrently to each portable electronic device.

4. The system of claim 2, wherein:

the chamber is one of a plurality of chambers, each configured receive at least one portable electronic device;

the pressurization subsystem is coupled with the plurality of chambers and is configured to produce the negative pressure environment within each chamber; and

the thermal conduction assembly is one of a plurality of thermal conduction assemblies, each disposed in relation to an associated one of the plurality of chambers.

5. The system of claim 4, wherein:

the pressurization subsystem is coupled with each of the plurality of chambers and is configured to selectively and independently produce the negative pressure environment within each chamber.

6. The system of claim 1, wherein the thermal conduction assembly is configured to dynamically conform in three dimensions around at least some of the external shape of the portable electronic device in response to receiving the portable electronic device.

7. The system of claim 1, wherein the thermal conduction assembly is shaped to statically conform in three dimensions around at least some of the external shape of the portable electronic device.

8. The system of claim 1, wherein the thermal conduction assembly is configured to conform to a majority of the external shape of the portable electronic device.

9. The system of claim 1, wherein the thermal conduction assembly is configured so that, when the portable electronic device is within the chamber, the portable electronic device is at least partially immersed in the thermal conduction assembly.

10. The system of claim 1, wherein the thermal conduction assembly comprises a plurality of thermally conductive beads.

11. The system of claim 10, wherein the thermally conductive beads manifest a thermal conductivity of at least 0.5 W/m°

K.

12. The system of claim 10, wherein the thermally conductive beads are metallic.

13. The system of claim 10, wherein the thermal conduction assembly further comprises a plurality of substantially non-conductive beads interspersed with the plurality of thermally conductive beads.

14. The system of claim 13, further comprising:

a disinfecting subsystem configured to irradiate the portable electronic device with radiation while the portable electronic device is in the chamber,

wherein the thermal conduction assembly is configured to permit transmission of the radiation to the portable electronic device via the plurality of substantially non-conductive beads.

15. The system of claim 10, 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.

16. The system of claim 10, wherein the thermal conduction assembly further comprises structure from which the thermally conductive beads hang in such a way that permits the beads to substantially conform to the external shape of the portable electronic device and to conduct the heat to the portable electronic device.

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

18. The system of claim 1, wherein the thermal conduction assembly comprises at least one receptacle shaped to thermally couple in a non-planar manner with at least a portion of the external shape of the portable electronic device and to conduct the heat to the portable electronic device.

19. The system of claim 1, further comprising:

a heating subsystem configured to generate the heat and comprising the thermal conduction assembly.

20. 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.

21. The system of claim 20, 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.

22. The system of claim 20, further comprising:

a heating subsystem configured to apply heat to the thermal conduction assembly,

wherein the monitoring subsystem is configured to determine whether sufficient heat is being delivered to the portable electronic device to at least overcome the latent heat of evaporation resulting from the gasifying of the liquid in the portable electronic device, and

the heating subsystem is in communication with the monitoring subsystem and is configured to automatically regulate the heat in accordance with the determining.

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

receiving a portable electronic device in a chamber in such a manner that causes a thermal conduction assembly to substantially conform in three dimensions around the portable electronic device, 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 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 the thermal conduction assembly during the pressurizing, the heating being at least sufficient to replenish latent heat of vaporization lost from the gasifying of the liquid.

24. The method of claim 23, wherein:

the receiving comprises receiving a portable electronic device in each of a plurality of chambers concurrently, in such a manner that causes a respective thermal conduction assembly in each chamber to substantially conform in three dimensions around its respective portable electronic device; and

the pressurizing comprises pressurizing each chamber to produce a respective negative pressure environment within each chamber sufficient to gasify the liquid in its respective portable electronic device.

25. The method of claim 23, wherein the thermal conduction assembly is configured to dynamically conform in three dimensions around at least a portion of the external shape of the portable electronic device.

26. The method of claim 23, wherein the thermal conduction assembly is shaped to statically conform in three dimensions around at least a portion of the external shape of the portable electronic device.

27. The method of claim 23, wherein the receiving comprises at least partially immersing the portable electronic device in the thermal conduction assembly.

28. The method of claim 23, wherein the receiving comprises sandwiching the portable electronic device between a plurality of heating components of the thermal conduction assembly.

29. The method of claim 23, wherein the receiving comprises receiving the portable electronic device in at least one receptacle shaped to thermally couple in a non-planar manner with at least a portion of the external shape of the portable electronic device and to conduct the heat to the portable electronic device.

30. The method of claim 23, further comprising:

irradiating the portable electronic device with radiation while the portable electronic device is in the chamber,

wherein the thermal conduction assembly is configured to permit transmission of the radiation to the portable electronic device.

31. The method of claim 23, further comprising:

monitoring 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; and

dynamically adjusting at least one of the pressurizing or the heating in accordance with the monitoring.

32. The method of claim 23, further comprising:

the heating comprises heating the thermal conduction assembly to a desired level and subsequently ceasing to heat the thermal conduction assembly prior to the receiving, the thermal conduction assembly configured to store heat to a sufficient extent to replenish latent heat of vaporization lost from the gasifying of the liquid during the pressurizing.