Methods and apparatuses for manipulating temperature
Methods and apparatuses for manipulating the temperature of a surface are provided. Devices of the present disclosure may include a thermal adjustment apparatus, such as a controller in electrical communication with one or more thermoelectric materials, placed adjacent to the surface of skin. The device may generate a series of thermal pulses at the surface, for providing an enhanced thermal sensation for a user. The thermal pulses may be characterized by temperature reversibility, where each pulse includes an initial temperature adjustment, followed by a return temperature adjustment, over a short period of time (e.g., less than 120 seconds). The average rate of temperature change upon initiation and upon return may be between about 0.1° C./sec and about 10.0° C./sec. In some cases, the average rate of the initial temperature adjustment is greater in magnitude than the average rate of the return temperature adjustment.
1. A device for manipulating a temperature of an exterior skin surface, comprising:
a support structure configured to be worn by a wearer on a wrist or a neck of the wearer;
at least one thermoelectric material including a first side configured to be disposed adjacent the exterior skin surface on the wrist or the neck of a wearer;
a housing coupled to the support structure, wherein at least a portion of the housing includes a thermally conductive material in thermal contact with a second side of the at least one thermoelectric material, wherein the second side is opposite the first side, wherein the thermally conductive material is configured to dissipate heat in surrounding air;
a battery configured to provide energy to the at least one thermoelectric material; and
a controller operatively coupled with the at least one thermoelectric material and configured to control the at least one thermoelectric material to generate a plurality of thermal pulses in succession at the exterior skin surface, wherein the plurality of thermal pulses cycle a temperature of the exterior skin surface between at least a first temperature and a second temperature, wherein the controller and the battery are disposed between the thermally conductive material and an upper surface of the housing, wherein the thermally conductive material of the housing is disposed between the at least one thermoelectric material and both of the battery and the controller, and wherein the first temperature and the second temperature are within 10 degrees Celsius of an initial temperature of the exterior skin surface, wherein the first temperature and the second temperature are below the initial temperature, and wherein an average rate of temperature change from the first temperature to the second temperature is greater than the average rate of temperature change from the second temperature to the first temperature.
2. The device of claim 1 , wherein the thermally conductive material is a heatsink, wherein the heatsink is in thermal contact with one side of the at least one thermoelectric material, and wherein the battery and the controller are surrounded by the heatsink on at least 3 sides.
3. The device of claim 1 , wherein the housing includes multiple portions, and wherein the thermally conductive material is included in the multiple portions.
4. The device of claim 1 , wherein an average power consumption of the battery during the thermal pulse generation is less than 2 Watts.
5. The device of claim 1 , wherein a portion of the housing is configured for coupling and decoupling with a complementary portion of the support structure.
6. The device of claim 5 , wherein the support structure is a band.
7. The device of claim 1 , wherein the thermally conductive material has a substantially flat planar surface profile extending between a first end region of the device and a second end region of the device, the second end region located opposite the first end region.
8. The device of claim 1 , wherein the thermally conductive material has a surface profile substantially free of protrusions extending greater than 1 mm away from the upper surface, between a first end region of the device and a second end region of the device, the second end region located opposite the first end region.
9. The device of claim 1 , wherein the thermally conductive material is a heat dissipation unit adapted to undergo a temperature change of greater than 10 degrees Celsius per Watt of power applied to the thermally conductive material at standard ambient temperature and pressure (SATP) conditions.
10. The device of claim 1 , wherein a ratio of an externally facing surface area of the thermally conductive material and an externally facing surface area of the at least one thermoelectric material is less than or equal to 4.
11. The device of claim 1 , wherein the at least one thermoelectric material is disposed on a first side of the housing, and the battery is disposed on a second opposing side of the housing.
12. The device of claim 1 , wherein the controller is disposed against the battery.
13. The device of claim 1 , wherein the at least one thermoelectric material is disposed on an outer surface of the thermally conductive material of the housing.
14. The device of claim 1 , wherein the battery is disposed on the thermally conductive material of the housing and the controller is disposed on the battery.
15. The device of claim 1 , wherein the housing is configured to be decoupled from the support structure.
16. The device of claim 1 , wherein an average rate of temperature change from the first temperature to the second temperature during the plurality of thermal pulses is between or equal to 0.1° C./sec and 10.0° C./sec.
17. A device for manipulating a temperature of an exterior skin surface, comprising:
a support structure configured to be worn by a wearer on a wrist or a neck of the wearer;
at least one thermoelectric material including a first side configured to be disposed adjacent the exterior skin surface on the wrist or the neck of a wearer;
a battery configured to provide energy to the at least one thermoelectric material;
a heatsink in thermal contact with a second side of the at least one thermoelectric material, wherein the second side is opposite the first side, wherein the heatsink is configured to dissipate heat in surrounding air;
wherein the support structure is coupled to the heatsink; and
a controller operatively coupled with the at least one thermoelectric material and configured to control the at least one thermoelectric material to generate a plurality of thermal pulses in succession at the exterior skin surface, wherein the plurality of thermal pulses cycle a temperature of the exterior skin surface between at least a first temperature and a second temperature, wherein the heatsink is in thermal contact with one side of the at least one thermoelectric material, wherein the controller and the battery are disposed between a lower portion of the heatsink and an upper portion of the heatsink, wherein the heatsink is disposed between the at least one thermoelectric material and both of the battery and the controller, and wherein the first temperature and the second temperature are within 10 degrees Celsius of an initial temperature of the exterior skin surface, wherein the first temperature and the second temperature are below the initial temperature, and wherein an average rate of temperature change from the first temperature to the second temperature is greater than the average rate of temperature change from the second temperature to the first temperature.
18. The device of claim 17 , wherein the heatsink is in thermal contact with one side of the at least one thermoelectric material, and wherein the battery and the controller are surrounded by the heatsink on at least 3 sides.
19. The device of claim 18 , wherein an average power consumption of the device during the thermal pulse generation is less than 2 Watts.
20. The device of claim 17 , wherein the heatsink has a surface profile substantially free of protrusions extending greater than 1 mm away from the upper portion, between a first end region of the device and a second end region of the device, the second end region located opposite the first end region.
21. The device of claim 17 , wherein a ratio of an externally facing surface area of the heatsink and an externally facing surface area of the at least one thermoelectric material is less than or equal to 4.
22. The device of claim 17 , wherein the heatsink has a substantially flat planar surface profile extending between a first end region of the device and a second end region of the device, the second end region located opposite the first end region.
23. A method for manipulating a temperature of an exterior skin surface, comprising:
positioning a first side of at least one thermoelectric material adjacent to the exterior skin surface on a wrist or neck of a wearer with a support structure coupled to a housing;
generating a plurality of thermal pulses in succession at the first side of the at least one thermoelectric material adjacent the exterior skin surface on the wrist or the neck of the wearer, wherein the plurality of thermal pulses cycle a temperature of the first side between at least a first temperature and a second temperature, and wherein the first temperature and the second temperature are within 10 degrees Celsius of an initial temperature of the exterior skin surface, wherein the first temperature and the second temperature are below the initial temperature, and wherein an average rate of temperature change from the first temperature to the second temperature is greater than the average rate of temperature change from the second temperature to the first temperature;
transferring heat between a second side of the at least one thermoelectric material and a heatsink of the housing that is in thermal contact with the at least one thermoelectric material, wherein the second side is opposite the first side, wherein a battery and a controller are disposed between a lower portion of the heatsink and an upper portion of the heatsink, wherein the heatsink is disposed between the at least one thermoelectric material and both of the battery and the controller, and wherein the battery and the controller are both surrounded by the heatsink on at least 3 sides; and
dissipating heat from the heatsink into surrounding air.
24. The method of claim 23 , wherein the housing includes multiple portions, and wherein the heatsink is included in the multiple portions.
25. The method of claim 23 , wherein that an average power consumption of the battery providing energy to the at least one thermoelectric material during the thermal pulse generation is less than 10 Watts.
26. The method of claim 23 , wherein the heatsink has a surface profile substantially free of protrusions extending greater than 1 mm away from the upper portion.
27. The method of claim 23 , wherein a ratio of an externally facing surface area of the heatsink and an externally facing surface area of the at least one thermoelectric material is less than or equal to 4.
28. A device for manipulating a temperature of an exterior skin surface, comprising:
a support structure configured to be worn by a wearer on a wrist or a neck of the wearer;
at least one thermoelectric material including a first side configured to be disposed adjacent the exterior skin surface on the wrist or the neck of a wearer;
a housing, wherein at least a portion of the housing is a heatsink in thermal contact with a second side of the at least one thermoelectric material, wherein the second side is opposite the first side, wherein the heatsink is configured to dissipate heat in surrounding air;
a battery configured to provide energy to the at least one thermoelectric material; and
a controller operatively coupled with the at least one thermoelectric material and configured to control the at least one thermoelectric material to generate a plurality of thermal pulses in succession at the exterior skin surface, wherein the plurality of thermal pulses cycle a temperature of the exterior skin surface between at least a first temperature and a second temperature, wherein the battery and the controller are both surrounded by the heatsink on at least 3 sides, wherein the heatsink is disposed between the at least one thermoelectric material and both of the battery and the controller, and wherein the first temperature and the second temperature are within 10 degrees Celsius of an initial temperature of the exterior skin surface, wherein the first temperature and the second temperature are below the initial temperature, and wherein an average rate of temperature change from the first temperature to the second temperature is greater than the average rate of temperature change from the second temperature to the first temperature.
29. The device of claim 28 , wherein the housing includes multiple portions, and wherein the heatsink is included in the multiple portions.
30. The device of claim 28 , wherein an average power consumption of the device during the thermal pulse generation is less than 2 Watts.
31. The device of claim 28 , wherein the heatsink has a surface profile substantially free of protrusions extending greater than 1 mm away from an upper surface of the heatsink, between a first end region of the device and a second end region of the device, the second end region located opposite the first end region.
32. The device of claim 28 , wherein a ratio of an externally facing surface area of the heatsink and an externally facing surface area of the at least one thermoelectric material is less than or equal to 4.
33. The device of claim 28 , wherein the housing has a substantially flat planar surface profile extending between a first end region of the device and a second end region of the device, the second end region located opposite the first end region.