Abstract: The electronic cigarette having a power chip with automatic closed-loop control for output comprises a vaporizer and a battery assembly which are connected with each other. The vaporizer comprises a heating element. The battery assembly comprises a battery and a control circuit board arranged with a control circuit. The control circuit comprises a microcontroller, and comprises a power chip, a microcontroller power supply unit, and a starting switch, which are electrically connected with the microcontroller, respectively. The control circuit is further arranged with a reference resistor connected with the heating element. The power chip is electrically connected with the battery, the reference resistor, and the heating element. The power chip is configured to perform automatic closed-loop control by determining the resistance value of the reference resistor and feedback for output voltage under a command of the microcontroller, to output precisely adjustable voltage to the heating element.

Abstract: Disclosed are an electronic cigarette, e-cigarette, for preventing minors from using and a control method thereof. The e-cigarette includes a vaporization assembly and a battery assembly, where the vaporization assembly is provided therein with a vaporization device; the battery assembly includes a casing, a holder, a battery, and a control circuit; the control circuit includes an output power control unit, a storage control unit, a personal biometric information acquisition unit, a prompt unit, and a communication unit; the personal biometric information acquisition unit is configured to acquire and input a user's personal biometric information into the storage control unit; and when the storage control unit stores or changes the user's authorized personal biometric information, the storage control unit utilizes an external device and special software that are authorized to complete the storage or change.

Abstract: The electronic cigarette chip with automatic closed-loop control for output voltage and a working method thereof are provided. The chip comprises a built-in MCU module, a full bridge buck-boost module, an output voltage feedback circuit module, an operational amplifying unit module, and a plurality of signal terminals. The signal terminal VOUT serves to provide output voltage to a heating element. The output voltage feedback circuit module serves to feed output voltage of the signal terminal VOUT back to the built-in MCU module. The operational amplifying unit module serves to detect a resistance value of the heating element and send it to the built-in MCU module. The built-in MCU module serves to perform operations based on setting signals of the external chip and feedback signals of the output voltage feedback circuit module, and automatically control the full bridge buck-boost module, to provide precisely adjustable output voltage by the signal terminal VOUT.

Abstract: An electronic cigarette preheating control method comprises setting preheating parameters and preheating routine in a microcontroller MCU. The preheating parameters at least include preset temperature value, and preset heating time or preset target temperature value. The preheating routine comprises: after turning on the electronic cigarette, activating preheating function when preheating button arranged on the electronic cigarette is pressed, detecting real-time temperature value by means of a temperature detection unit; by means of the microcontroller MCU, comparing the real-time temperature value with the preset temperature value, and determining whether preheating of the cigarette liquid stored inside the liquid storage chamber is required. If no, directly entering an available stand-by state.

Abstract: An electronic cigarette encrypted by wireless electronic tag and an encrypting method thereof are provided. The electronic cigarette comprises a vaporizer (1) and a battery assembly (2) connected with each other, the vaporizer (1) comprises a heating resistor (3) and a wireless electronic tag preset with encryption information, the battery assembly (2) comprises a battery (4) and a control circuit board (5) arranged with a microcontroller, a resistance detection unit, a voltage output control unit, a wireless electronic tag reader, and a wireless signal transmitter, wherein the wireless electronic tag reader reads the encryption information and sends it to the microcontroller, and the voltage output control unit outputs voltage to the heating resistor on the premise that the resistance value of the heating resistor is detected by the resistance detection unit and the encryption information is read by the wireless electronic tag reader as well.

Abstract: A sealing structure includes an inner pipe, an outer pipe, and a sealing ring, where the outer pipe is detachably sleeved on the inner pipe, a slot for inserting a pipe is formed between an inner wall of the outer pipe and an outer wall of the inner pipe, and the outer wall of the inner pipe is provided with a sealing groove for placing the sealing ring; the sealing ring includes a main body provided with a lip; the sealing groove includes a first sealing groove and a second sealing groove, the first sealing groove and the second sealing groove are stepped; the bottom of the lip fits the bottom of the first sealing groove; and the bottom of the main body fits the bottom of the second sealing groove.

Abstract: A sealing structure includes an inner pipe, an outer pipe, and a sealing ring, where the outer pipe is detachably sleeved on the inner pipe, a slot for inserting a pipe is formed between an inner wall of the outer pipe and an outer wall of the inner pipe, and the outer wall of the inner pipe is provided with a sealing groove for placing the sealing ring; the sealing ring includes a main body provided with a lip; the sealing groove includes a first sealing groove and a second sealing groove, the first sealing groove and the second sealing groove are stepped; the bottom of the lip fits the bottom of the first sealing groove; and the bottom of the main body fits the bottom of the second sealing groove.

Abstract: A pipe fitting joint assembly including a guide sleeve, provided with a first concave-convex structure on the outer wall of one end thereof, a connecting body, provided with a second concave-convex structure on the inner walls of both ends thereof, and an inner gear ring provided with a third concave-convex structure on an inner ring thereof and a fourth concave-convex structure on an outer ring thereof. The inner gear ring is concentrically inserted into the connecting body. The fourth concave-convex structure and the second concave-convex structure are in interference fit. The guide sleeve is concentrically inserted into the inner ring gear of the connecting body. The first concave-convex structure and the fourth concave-convex structure are in clearance fit therebetween using a moving interference manner.

Abstract: A connecting joint includes a connecting tube and a first compression sleeve. The connecting tube includes a first tube connecting section for connecting a first tube and a second tube connecting section for connecting a second tube. The first tube connecting section and the second tube connecting section are communicated and an annular connecting plate is arranged therebetween. The first compression sleeve is sleeved on the second tube connecting section. A first insertion hole is formed between an inner wall of the first compression sleeve and an outer wall of the second tube connecting section. A first annular groove is formed in an outer surface of one end of the second tube connecting section. An end portion of one end of the first compression sleeve close to the annular connecting plate is bent toward the second tube connecting section and inserted into the first annular groove.

Abstract: A pipe fitting connecting method and a connecting structure, comprising the following steps of: providing an elastic sleeve (10) at the position of an end opening of a pipe material (20) in a sleeving manner, and clamping the pipe material by means of a clamping sleeve (01) of a push tool; fixing a connecting pipe body (30) to a clamping ring (02) of the push tool, the front end of an insertion end (310) of the connecting pipe body being a guiding-in section (312), the rear end of the insertion section of the connecting pipe body being an expansion section (314), the outer diameter of the guiding-in section being equal to the inner diameter of the pipe material, and a conical ring (316) with a small front end and a large rear end being provided on the periphery of the expansion section; and enabling the insertion end of the connecting pipe body (30) to be forcefully inserted into the pipe material, the pipe material and the elastic sleeve (10) being gradually expanded along the conical ring (316) of the expan

Abstract: A pipe fitting joint assembly, comprising: a guide sleeve, provided with a first concave-convex structure on the outer wall of one end thereof; a connecting body, provided with a second concave-convex structure on the inner walls of both ends thereof; and an inner gear ring, provided with a third concave-convex structure on an inner ring thereof and a fourth concave-convex structure on an outer ring thereof. The inner gear ring is concentrically inserted into the connecting body; the fourth concave-convex structure and the second concave-convex structure are in interference fit; the guide sleeve is concentrically inserted into the inner ring gear of the connecting body; and the first concave-convex structure and the fourth concave-convex structure are in clearance fit therebetween using a moving interference manner.