Electronic Cigarette

Abstract

The present disclosure provides an electronic cigarette includes a housing, an atomizer spaced apart from the smoking port, an e-liquid chamber located between the atomizer and the smoking port, and a MEMS sensor located in the housing. The housing includes a smoking port passing through an upper end thereof, a through hole passing through a lower end thereof, and an air passage communicating with the smoking port. The MEMS sensor includes a cover having a first opening, a printed circuit board, and a MEMS chip received in the accommodating room formed by the cover and the printed circuit board. The printed circuit board includes a second opening communicating to an outside by the through hole.

What is claimed is: 
     
         1 . An electronic cigarette, comprising:
 a housing comprising:
 a smoking port passing through an upper end thereof; 
 a through hole passing through a lower end thereof; and 
 an air passage communicating with the smoking port; 
   an atomizer received in the housing and spaced apart from the smoking port;   an e-liquid chamber located between the atomizer and the smoking port; and   a MEMS sensor located in the housing and on the lower end of the housing, the MEMS sensor comprising:
 a cover having a first opening communicating with the smoking port by the air passage; 
 a printed circuit board forming an accommodating room cooperatively with the cover, the printed circuit board comprising a second opening communicating to an outside by the through hole; and 
 a MEMS chip received in the accommodating room. 
   
     
     
         2 . The electronic cigarette as described in  claim 1 , wherein the printed circuit board comprises a plurality of conductive terminals therein, and the MEMS chip is directly electrically connected to the conductive terminals. 
     
     
         3 . The electronic cigarette as described in  claim 1 , wherein the printed circuit board comprises a plurality of conductive terminals therein, the MEMS sensor further comprising an ASIC chip fixing on the printed circuit board, and the MEMS chip is electrically connected to the conductive terminal through the ASIC chip. 
     
     
         4 . The electronic cigarette as described in  claim 1 , wherein the cover of the MEMS sensor is a metal cover. 
     
     
         5 . The electronic cigarette as described in  claim 1 , wherein the MEMS chip comprises a back plate and a diaphragm spaced apart from the back plate, a plurality of perforations disposed on the back plate. 
     
     
         6 . The electronic cigarette as described in  claim 5 , wherein the back plate is proximal to the smoking port than the diaphragm. 
     
     
         7 . The electronic cigarette as described in  claim 6 , wherein two pressures coining from the first opening and the second opening respectively simultaneously act on the diaphragm to form a pressure difference, the pressure difference making the diaphragm move to increase an output capacitance value to drive the atomizer work. 
     
     
         8 . The electronic cigarette as described in  claim 5 , wherein the diaphragm is proximal to the smoking port than the back plate. 
     
     
         9 . The electronic cigarette as described in  claim 8 , wherein two pressures coining from the first opening and the second opening respectively simultaneously act on the diaphragm to form a pressure difference, the pressure difference making the diaphragm move to reduce an output capacitance value to drive the atomizer work.