Wickless vaporizing devices and methods
Deformable valves and atomizer designs for a vaporizer (e.g., electronic cigarette). The vaporizer may be used for vaporization of liquid and/or organic material. The vaporizer may enable enhanced flow control of fluid and may generate high quality and quantity of vapor efficiently. In some instances, flow path of the vaporizer may allow bulk fluid flow, e.g., in contrast to capillary flow, to deliver fluid to a vicinity of the vaporizer. In some instances, the vaporizer may utilize improved atomizer designs for vaporizing devices, where said designs can be configured optionally, with various embodiments of a breath-modulating deformable valve.
1. A self-cleaning hand-held vaporizer, comprising:
an elongate body having a mouthpiece;
a reservoir configured to contain a vaporizable fluid;
an atomizer within the elongate body configured to form a vapor from the vaporizable fluid, the atomizer comprising:
a heating element;
a draw sensor configured to detect a user drawing on the mouthpiece; and
a controller configured to control the heating element and to initiate a self-cleaning cycle during a period when the draw sensor does not detect a user drawing on the mouthpiece, the self-cleaning cycle including controlling the heating element to increase in temperature to a self-cleaning temperature that is greater than approximately 300° Celsius (C) for a self-cleaning period of time that is greater than approximately 30 seconds.
2. The vaporizer of claim 1 , wherein the self-cleaning temperature is greater than approximately 400° C.
3. The vaporizer of claim 1 , wherein the self-cleaning temperature is greater than approximately 500° C.
4. The vaporizer of claim 1 , wherein the self-cleaning period of time is between approximately 1 minute and approximately 10 minutes.
5. The vaporizer of claim 1 , wherein the self-cleaning period of time is greater than 10 minutes.
6. The vaporizer of claim 1 , wherein the controller initiates the self-cleaning cycle after a predetermined number of draws on the mouthpiece.
7. The vaporizer of claim 1 , wherein the controller initiates the self-cleaning cycle after a predetermined duration the vaporizer is used.
8. The vaporizer of claim 1 , wherein the controller initiates the self-cleaning cycle at a scheduled time.
9. The vaporizer of claim 1 , wherein the controller initiates the self-cleaning cycle during charging of the vaporizer.
10. The vaporizer of claim 1 , wherein the controller initiates the self-cleaning cycle based on prior operation of the vaporizer.
11. The vaporizer of claim 1 , wherein the vaporizer provides an indication indicating the self-cleaning cycle is scheduled and/or in process.
12. The vaporizer of claim 1 , wherein the indication includes one or more of an illuminated indicator, a message displayed on a display, and/or transmission of a signal to a user device.
13. The vaporizer of claim 1 , wherein the atomizer is wickless.
14. The vaporizer of claim 1 , further comprising:
a tube extending between the reservoir and the heating element, the tube configured to permit a bulk flow of the vaporizable fluid from the reservoir to the heating element; and
a flow modulator configured to modulate the bulk flow of the vaporizable fluid through the tube from the reservoir to the heating element.
15. The vaporizer of claim 14 , wherein the flow modulator comprises one or more of a valve and a deformer.
16. The vaporizer of claim 1 , wherein the heating element includes a coil.
17. The vaporizer of claim 1 , wherein the heating element is a resistive heater.
18. The vaporizer of claim 14 , wherein the tube comprises a porous filter configured to release vapor for inhalation but retain an unvaporized portion of the vaporizable fluid within the atomizer.
19. The vaporizer of claim 1 , wherein the atomizer comprises a porous filter configured to release vapor for inhalation but retain an unvaporized portion of the vaporizable fluid within the atomizer.
20. A method of self-cleaning using a hand-held vaporizer, the method comprising:
determining when a user is not drawing through a mouthpiece of the vaporizer;
heating a heating element to a self-cleaning temperature that is greater than a vaporization temperature of the vaporizer for a predetermined self-cleaning time that is greater than 30 seconds; and
preventing flow of a vaporizable fluid from a fluid reservoir of the vaporizer through to the heating element while the heating element is at the self-cleaning temperature.