Airflow heating device, heating control method, and electronic cigarette

Abstract

An airflow heating device includes an air channel for passage of an airflow, a heating member used to heat the airflow when passing through the air channel, a first temperature sensing element, a second temperature sensing element, and a control device. The first temperature sensing element is used to detect a temperature of the airflow at an air inlet of the air channel. The second temperature sensing element is located at an air outlet of the air channel, and is configured to detect a temperature of the airflow at the air outlet of the air channel. The control device is used to control the heating member according to temperature information of the heating member detected by the first temperature sensing element and temperature information of the airflow at the air outlet of the air channel detected by the second temperature sensing element.

1 . An airflow heating device, comprising an air channel for passage of an airflow, a heating member used for heating the airflow when passing through the air channel, a first temperature sensing element, a second temperature sensing element, and a control device, wherein the first temperature sensing element is used for detecting a temperature of the airflow at an air inlet of the air channel, the second temperature sensing element is located at an air outlet of the air channel for detecting a temperature of the airflow at the air outlet of the air channel, the control device is separately connected to the first temperature sensing element, the second temperature sensing element and the heating member, the control device is used for controlling the heating member according to temperature information of the airflow detected by the first temperature sensing element and temperature information of the airflow detected by the second temperature sensing element. 
     
     
         2 . The airflow heating device according to  claim 1 , wherein the airflow heating device comprises an outer tube and an inner support disposed inside the outer tube, and the air channel is formed between the outer tube and the inner support. 
     
     
         3 . The airflow heating device according to  claim 2 , wherein the air channel is spiral. 
     
     
         4 . The airflow heating device according to  claim 3 , wherein the inner support comprises a central post and a spiral guide vane arranged along the central post, and the spiral air channel is formed between the central post, the guide vane and the outer tube. 
     
     
         5 . The airflow heating device according to  claim 1 , wherein an airflow sensing element is further provided at the air inlet of the air channel, and the airflow sensing element is used for detecting suction signal. 
     
     
         6 . An electronic cigarette, comprising the airflow heating device according to  claim 1 . 
     
     
         7 . An airflow heating control method used for the airflow heating device according to  claim 1 , comprising the following steps:
 acquiring temperature information detected by the first temperature sensing element and the second temperature sensing element;   controlling the heating member according to the temperature information;   wherein the first temperature sensing element is used for detecting the temperature of the airflow at the air inlet of the air channel, and the second temperature sensing element is located at the air outlet of the air channel for detecting the temperature of the airflow at the air outlet of the air channel.   
     
     
         8 . The method according to  claim 7 , wherein said controlling the heating member according to the temperature information comprises:
 controlling the heating member to enter a heating mode when a cigarette lighting signal is received;   determining whether a first temperature detected by the first temperature sensing element reaches a first preset temperature;   controlling the heating member to enter a heat preservation mode and issuing a prompt message when the first temperature detected by the first temperature sensing element reaches the first preset temperature;   when a suction signal is detected, controlling the heating member to perform heating according to a second temperature detected by the second temperature sensing element.   
     
     
         9 . The method according to  claim 8 , wherein said controlling the heating member to perform heating according to a second temperature detected by the second temperature sensing element comprises:
 if the second temperature is lower than a second preset temperature, controlling the heating member to perform heating at a first power until the second temperature reaches the second preset temperature;   if the second temperature is equal to or greater than the second preset temperature, controlling the heating member to perform heating at a second power, wherein the first power is greater than the second power.   
     
     
         10 . The method according to  claim 8 , wherein said controlling the heating member to enter a heating mode comprises: controlling the heating member to perform heating at a third power;
 said controlling the heating member to enter a heat preservation mode comprises: controlling the heating member to perform heating at a fourth power, wherein the third power is greater than the fourth power.   
     
     
         11 . The method according to  claim 8 , wherein the airflow heating device comprises at least one heating member, said controlling the heating member to enter a heating mode comprises: controlling all the heating members to perform heating;
 said controlling the heating member to enter a heat preservation mode comprises:   controlling a portion of the heating members to perform heating.   
     
     
         12 . An electronic cigarette comprising a memory and a processor, wherein at least one program instruction is stored in the memory, and the processor implements the following method by loading and executing the at least one program instruction:
 acquiring temperature information detected by a first temperature sensing element and a second temperature sensing element;   controlling a heating member according to the temperature information;   wherein the heating member is used for heating an airflow when passing through an air channel, the first temperature sensing element is used for detecting a temperature of the airflow at an air inlet of the air channel, the second temperature sensing element is located at an air outlet of the air channel for detecting a temperature of the airflow at the air outlet of the air channel.