Core cartridge for electronic cigarette

A core cartridge for electronic cigarette,

• a main housing having a mouth piece portion, an atomizer portion, a connecting portion extended between said mouth piece portion and said atomizer portion, a liquid storage compartment formed in said connecting portion and a an air inlet, said main housing further having an outer boundary wall and a vapor releasing channel extended from said atomizer portion to said connecting portion,
• an atomizer supported in said atomizer portion of said main housing,
• a leakage prevention arrangement, which comprises at least one drainage port formed in said main housing, said drainage port communicating said outer boundary wall with said atomizer in such a manner that condensate formed on an inner surface of said outer boundary wall of said main housing is arranged to be guided to flow back to said atomizer through said drainage port, and
• an air switch and a fuel switch provided on said main housing, and a pressure balancing arrangement which comprises a pressure balancing tube extended from the air switch to said liquid storage compartment, said pressure balancing arrangement further having at least one air gap formed between said air switch and said main housing so that when said air switch and said fuel switch are actuated, air from ambient environment is allowed to flow into said pressure balancing tube and balance a pressure between said ambient environment and that of said liquid storage compartment.

A core cartridge for electronic cigarette, comprising:

• a main housing having a mouth piece portion, an atomizer portion, a connecting portion extended between said mouth piece portion and said atomizer portion, a liquid storage compartment formed in said connecting portion and a an air inlet, said main housing further having an outer boundary wall and a vapor releasing channel extended from said atomizer portion to said connecting portion:
• an atomizer supported in said atomizer portion of said main housing;
• a leakage prevention arrangement, which comprises at least one drainage port formed in said main housing, said drainage port communicating said outer boundary wall with said atomizer in such a manner that condensate formed on an inner surface of said outer boundary wall of said main housing is arranged to be guided to flow back to said atomizer through said drainage port.
• an air switch and a fuel switch provided on said main housing;
• and a pressure balancing arrangement which comprises a pressure balancing tube extended from the air switch to said liquid storage compartment, said pressure balancing arrangement further having at least one air gap formed between said air switch and said main housing so that when said air switch and said fuel switch are actuated, air from ambient environment is allowed to flow into said pressure balancing tube and balance a pressure between said ambient environment and that of said liquid storage compartment,
• wherein said leakage prevention arrangement further comprises at least one residual drainage port and a residual storage cavity formed in said main housing at a position underneath said atomizer portion for temporarily storing residual condensate which is not collected through said drainage port, said residual drainage port communicating said outer boundary wall with said residual storage cavity,
• wherein said leakage prevention arrangement further comprises a vapor control member mounted in a top portion of said vapor releasing channel, said vapor control member having a vapor passage which communicates with said vapor releasing channel so that vapor from said atomizer is allowed to pass through said vapor passage.
• wherein said vapor passage has a tapered cross sectional shape when viewed from the front so that a diameter of said vapor passage gradually decreases from a top toward a bottom thereof.