Electronic Cigarette Water Tank

Abstract

An electronic cigarette water tank includes a container for holding a liquid for filtering vapor from a vaporizer of an electronic cigarette, the container including upper and lower walls; an inhalation tube inside the container for releasing vapor from the tank, the inhalation tube having an upstream end located above a liquid level within the container; a vapor tube inside the container for discharging vapor into the liquid, the vapor tube having a downstream end located below a liquid level within the container; the inhalation tube having a substantially U-shape extending from the upstream end toward the lower wall and turning back to the upper wall; and the vapor tube having a substantially U-shape extending from the downstream end toward the upper wall and turning back to the lower wall; wherein the inhalation tube and the vapor tube have hydrophobic properties.

1 . An electronic cigarette water tank, comprising:
 a container for holding a liquid for filtering vapor from a vaporizer of an electronic cigarette, the container comprising an upper wall and a lower wall;   an inhalation tube inside the container for releasing vapor from the water tank, wherein the inhalation tube has an upstream end located above a liquid level of the liquid within the container, when the water tank is in an upright position;   a vapor tube inside the container for discharging vapor into the liquid, wherein the vapor tube has a downstream end located below a liquid level of the liquid within the container, when the water tank is in the upright position;   wherein the inhalation tube has a substantially U-shape extending from the upstream end toward the lower wall of the container and turning back to the upper wall of the container; and   wherein the vapor tube has a substantially U-shape extending from the downstream end toward the upper wall of the container and turning back to the lower wall of the container; wherein   the inhalation tube and the vapor tube have hydrophobic properties.   
     
     
         2 . The electronic cigarette water tank according to  claim 1 , wherein the inhalation tube and/or the vapor tube is/are made of a fluorocarbon resin material. 
     
     
         3 . The electronic cigarette water tank according to  claim 1 , wherein the inhalation tube and/or the vapor tube is/are coated with a fluorocarbon resin material. 
     
     
         4 . The electronic cigarette water tank according to  claim 1 , wherein an inner diameter of the inhalation tube and/or an inner diameter of the vapor tube is 3 mm or smaller. 
     
     
         5 . The electronic cigarette water tank according to  claim 1 , wherein the container comprises an inhalation tube fitting at the upper wall, wherein the inhalation tube fitting is fluidly connected with a downstream end of the inhalation tube. 
     
     
         6 . The electronic cigarette water tank according to  claim 5 , wherein the inhalation tube fitting is arranged to dispense vapor from the water tank to a mouthpiece. 
     
     
         7 . The electronic cigarette water tank according to  claim 1 , wherein the container comprises a vapor tube fitting at the lower wall, wherein the vapor tube fitting is fluidly connected with an upstream end of the vapor tube. 
     
     
         8 . The electronic cigarette water tank according to  claim 7 , wherein the vapor tube fitting is arranged to receive vapor from a vaporizer. 
     
     
         9 . The electronic cigarette water tank according to  claim 1 , wherein the upper wall and/or the lower wall is/are configured to be opened for cleaning an inside of container. 
     
     
         10 . The electronic cigarette water tank according to  claim 1 , further comprising a mouthpiece attached to the upper wall of the container, wherein the mouthpiece is inclined with respect to a vertical axis of the water tank. 
     
     
         11 . The electronic cigarette water tank according to  claim 1 , further comprising a vaporizer connector at the lower wall for connecting the water tank to a vapor outlet of a vaporizer, wherein the vaporizer connector is in fluid connection with the vapor tube. 
     
     
         12 . A shisha comprising a vaporizer for providing vapor and the electronic cigarette water tank according to  claim 1 , for filtering the vapor from the vaporizer. 
     
     
         13 . The shisha according to  claim 12 , wherein the vaporizer is attached to the electronic cigarette water tank at the lower wall of the container. 
     
     
         14 . A method of filling the electronic cigarette water tank according to  claim 1 , comprising the following steps:
 a. inserting a lower end of the electronic cigarette water tank into a liquid and sucking at a mouthpiece for filling the electronic cigarette water tank with the liquid until a liquid level in the electronic cigarette water tank has reached a desired liquid level; and   b. subsequently removing the electronic cigarette water tank from the liquid and further sucking at the mouthpiece, to remove liquid out of the vapor tube and to fill the vapor tube with air.   
     
     
         15 . A method of draining the electronic cigarette water tank according to  claim 1 , comprising the following step:
 blowing into a mouthpiece for draining the electronic cigarette water tank of a liquid.   
     
     
         16 . The electronic cigarette water tank according to  claim 2 , wherein the fluorocarbon resin material is FEP, PTFE or PFA. 
     
     
         17 . The electronic cigarette water tank according to  claim 3 , wherein the fluorocarbon resin material is FEP, PTFE or PFA. 
     
     
         18 . The electronic cigarette water tank according to  claim 1 , wherein an inner diameter of the inhalation tube and/or an inner diameter of the vapor tube is 2 mm or smaller. 
     
     
         19 . The electronic cigarette water tank according to  claim 11 , wherein the vaporizer connector has a threaded connection.