Electronic cigarette

1. An electronic cigarette, comprising a main body and a microwave heating module disposed in the main body; wherein:

the microwave heating module comprises a shielding sleeve, a first shielding net, a second shielding net, a strip of cotton, a silicone sleeve, and a microwave source;

the strip of cotton is disposed in the shielding sleeve;

the shielding sleeve is disposed on the microwave source;

the silicone sleeve comprises a hollow cylindrical part, and the microwave source is disposed and fixed in the cylindrical part;

in a power-on state, the microwave source emits microwave, and the microwave is released into the shielding sleeve to heat and atomize e-liquid adsorbed on the strip of cotton;

the first shielding net and the second shielding net are disposed on two ends of the strip of cotton in the shielding sleeve; two openings of the shielding sleeve are enclosed by the first shielding net and the second shielding net, respectively; and the first shielding net and the second shielding net are adapted to confine the microwave emitted by the microwave source within the shielding sleeve; and

the first shielding net is in a mesh configuration and has a plurality of mesh holes, and the first shielding net is adapted to convey a flow of air and vapor through the mesh holes.

2. The electronic cigarette of claim 1 , wherein the shielding sleeve comprises an e-liquid inlet.

3. The electronic cigarette of claim 1 , wherein the microwave heating module comprises a control panel and a battery; the battery is soldered on an input end of the control panel; an output end of the control panel is soldered to an input end of the microwave source for inputting alternating current to the microwave source to generate microwave.

4. The electronic cigarette of claim 3 , wherein the microwave heating module further comprises a cylinder; the silicone sleeve and the microwave source are disposed on an upper part of the cylinder; the control panel is fixed on a lower part of the cylinder; and the shielding sleeve is in threaded connection to the cylinder.

5. The electronic cigarette of claim 4 , wherein the main body comprises a housing; the microwave heating module is disposed on the housing; the battery and the lower part of the cylinder are disposed in the housing, and the upper part of the cylinder is exposed out of the housing.

6. The electronic cigarette of claim 3 , wherein the main body further comprises a button disposed on the control panel and exposed out of a side wall of the housing; and the button is configured to switch on the battery.

7. The electronic cigarette of claim 4 , further comprising a mouthpiece and a glass tube, wherein a bottom opening of the glass tube is disposed around a top part of the cylinder for e-liquid storage; the shielding sleeve is disposed in the glass tube; the mouthpiece is disposed in a top opening of the glass tube for sealing the top opening; the cylinder comprises at least one air vent; when in use, air enters the shielding sleeve via the at least one air vent of the cylinder and drives vapor resulting from the atomization of the e-liquid on the strip of cotton by the microwave to flow from the first shielding net to the mouthpiece for user's inhaling.