Abstract: An electronic cigarette, including an air passage and a one-way valve disposed in the air passage. The one-way valve includes a soft material. When in use, a forward airflow is passable through the one-way valve, and a reverse airflow is unpassable through the one-way valve, thus preventing the reverse airflow or saliva from entering the atomizer of the electronic cigarette.

Abstract: A high-frequency heating handle includes a heating assembly and a handle assembly. The heating assembly includes a heating cup for accommodating a tobacco material. The handle assembly includes a housing and a magnetic induction coil disposed in the housing. The housing includes a through hole, and the heating cup is disposed in the through hole. When alternating current passes through the magnetic induction coil, a magnetic induction effect is produced, and the heating cup is heated whereby a smoke material in the heating cup is heated to produce smoke.

Abstract: A tobacco roaster includes a heating rod which is retractable. The heating rod includes a through hole and an air passage communicating with the through hole. The heating rod is configured to heat a tobacco material to produce smoke, and the smoke enters the air passage via the through hole.

Abstract: An electronic cigarette includes a preheater. The preheater includes an e-liquid tank and a heating wire disposed in the e-liquid tank. In a power-on state, the heating wire produces heat.

Abstract: A high-frequency heating device includes a housing, a thermal insulation sleeve and a magnetic induction coil. The housing includes a central through hole and an enclosure surrounding the central through hole. The enclosure includes a cavity and the magnetic induction coil is disposed in the cavity. The thermal insulation sleeve is fixed in the magnetic induction coil. When in use, the neck of a hookah passes through the central through hole, and a heating cup containing tobacco material is disposed around the neck. The enclosure is disposed around the heating cup so that the high-frequency heating device is able to heat the tobacco material in the heating cup.

Abstract: A hookah includes a high-frequency heating assembly and a battery assembly connected to the high-frequency heating assembly. The high-frequency heating assembly includes a cup, a metal sheet, and a magnetic induction coil. The cup includes high-temperature resistant non-metallic material and is configured to accommodate a tobacco material. The metal sheet is fixed in the cup and the cup is disposed in the magnetic induction coil. When the magnetic induction coil is electrified, an eddy current is generated in the metal sheet whereby the metal sheet produces heat to heat the tobacco material.

Abstract: A glass atomizer includes a member for e-liquid injection and vapor discharge. The member for e-liquid injection and vapor discharge includes an outer glass tube and an inner glass tube disposed in the outer glass tube. The inner glass tube includes a top end. The outer edge of the top end includes a plurality of grooves. The top end is integrated with the inner wall of the outer glass tube.

Abstract: A ceramic heating core includes a ceramic body and at least one heating wire. The ceramic body includes at least one through hole, and the at least one heating wire is disposed through the at least one through hole. The at least one heating wire each includes an effective heating section; the effective heating section extends helically in the through hole; the effective heating section includes a plurality of helical coils, and there is a space between every two adjacent helical coils; defining a helical direction of the plurality of helical coils as an axial direction, the effective heating section has an axial height of 3-6 mm; and the ceramic body has an axial height of ?7.5 mm.

Abstract: An atomizer includes an e-liquid tank and a seal member. The e-liquid tank includes an e-liquid chamber and the seal member seals the e-liquid chamber. The seal member includes at least one e-liquid inlet unit including an elastic material that is penetrable by a sharp object and is restorable to its original shape after the sharp object is removed.

Abstract: A tobacco feeding device incudes a glass tube, a push rod, and a piston. The piston is movable along the inner wall of the glass tube. The push rod includes an air passage. The glass tube includes a feeding inlet. When the piston moves along the inner wall of the glass tube, a gap between the feeding inlet and the piston is exposed and a tobacco material is added to the tobacco feeding device. When in use, smoke produced by the tobacco material circulates in the air passage.

Abstract: An electronic cigarette, including: a mouthpiece cover; a housing; a battery; a silicone seal; a limit cover; a heating wire; a seat fixing the heating wire; a drain tube; an e-liquid filling pipe; a silicone sleeve; a plate including a pneumatic switch; and an end cover. The mouthpiece cover is disposed on the housing. The heating wire is fixed on the seat. The heating wire includes a pin which extends into the drain tube. The silicone seal sleeves the limit cover. The limit cover includes a groove and the heating wire is embedded in the groove. The limit cover is disposed on the seat. The drain tube and the e-liquid filling pipe are disposed in the seat. The pin of the heating wire is fixed on the plate. The plate includes a cathode and an anode which are connected to the battery. The silicone sleeve sleeves the plate.

Abstract: An atomizer includes an outer glass tube and an inner glass tube. The inner glass tube is disposed in the outer glass tube. The upper edge of the inner glass tube is integrated with the inner wall of the outer glass tube. The inner glass tube includes an air passage communicating with the upper opening of the outer glass tube. The space between the outer glass tube and the inner glass tube is used as an e-liquid tank and e-liquid is injected to the space via the bottom opening of the outer glass tube for atomization.