CN114642277A - Electronic heating device, control method thereof, controller and computer storage medium - Google Patents

Abstract

The invention discloses an electronic atomization device and a control method thereof, a controller and a computer storage medium, wherein the electronic heating device is used for low-temperature dry distillation of working substances and specifically comprises a first heating bin and a second heating bin, the working substances are placed in the first heating bin, a first heating element for heating the working substances to a preheating temperature is arranged on the side wall of the first heating bin, and the first heating bin is provided with a first air outlet and a first air inlet; a second heating element is arranged inside the second heating bin, the second heating bin is provided with a second air outlet communicated with the first air inlet and a second air inlet communicated with the outside, and the second air outlet and the second air inlet are used for heating the air in the second heating bin to the dry distillation temperature of the working object; the dry distillation temperature is higher than the preheating temperature. The invention adopts a non-contact heating mode of hot air, does not adopt a traditional heating element, is convenient to operate and use and reduces the production cost; and the heating is even, and no temperature field dead angle exists, so that the working substance can be fully distilled, and the user experience is improved.

Description

Electronic heating device, control method thereof, controller and computer storage medium

Technical Field

The invention relates to the technical field of heating, in particular to an atomizer and an electronic atomization device with the same.

Background

When the traditional tobacco is used, the tobacco is ignited firstly, then a user inhales smoke (namely aerosol) generated after the tobacco is combusted, the smoke is solid particles, the inside of the smoke contains nicotine, fragrance, coal tar and other complicated substances of thousands, and some substances directly influence the health of the user, such as the coal tar and the like. Therefore, low-temperature tobacco (namely, the tobacco is not burnt at low temperature) appears, the low-temperature tobacco enables nicotine and other fragrant substances in the tobacco to be volatilized when solid particles are not generated in the heating process, the nicotine or other fragrant substances in the tobacco are only subjected to physical phase change and are converted into a gaseous state from a liquid state, harmful solid particle smoke components such as coal tar and the like are not generated, and the harm degree of the smoking tobacco can be greatly reduced.

In fact, the heating process of low-temperature tobacco is a low-temperature dry distillation process, and the heating temperature is generally between 200 ℃ and 400 ℃. At present, what heating low temperature tobacco adopted is the mode that utilizes heating element contact heating, and its problem that exists lies in: the manufacturing process of the heating element is complex, the yield is low and the cost is high; in the heating process, the heating element generates heat unevenly, and the low-temperature tobacco is not carbonized sufficiently.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the electronic heating device which can reduce the production cost of the heating element, is uniformly heated and can fully dry distill the working substances such as low-temperature tobacco and the like.

The invention also provides a control method of the electronic heating device, a controller and a computer storage medium.

The electronic heating device is used for low-temperature dry distillation of working substances and specifically comprises a first heating bin and a second heating bin, wherein the working substances are placed inside the first heating bin, a first heating element for heating the working substances to a preheating temperature is arranged on the side wall of the first heating bin, and the first heating bin is provided with a first air outlet and a first air inlet; a second heating element is arranged inside the second heating bin, the second heating bin is provided with a second air outlet communicated with the first air inlet and a second air inlet communicated with the outside, and the second heating element is used for heating the air in the second heating bin to the dry distillation temperature of the working substance; the dry distillation temperature is higher than the preheating temperature.

According to the electronic heating device of the embodiment of the first aspect of the invention, at least the following beneficial effects are achieved: the invention adopts a non-contact heating mode of hot air, does not adopt a traditional heating element, is convenient to operate and use and reduces the production cost; and the heating is even, and no temperature field dead angle exists, so that the working substance can be fully distilled, and the user experience is improved.

According to some embodiments of the invention, a check valve is disposed at the second air inlet to control the outside air to enter the second heating chamber through the check valve.

According to some embodiments of the invention, the electronic heating device further comprises an air inlet bin, the air inlet bin is positioned below the second heating bin, the second air inlet is arranged on the bottom wall of the second heating bin and is communicated with the air inlet bin, and the air inlet bin is provided with a third air inlet communicated with the outside.

According to some embodiments of the invention, a check valve is disposed at the third air inlet to control the outside air to enter the air intake bin through the check valve.

According to some embodiments of the invention, the check valve includes a fixed portion, a free portion, and a connecting portion disposed between the fixed portion and the free portion, the connecting portion is made of a flexible material, and in a normal state, one side of the free portion abuts against one end of the third air inlet.

According to some embodiments of the invention, the check valve is integrally made of silicone, and the connecting portion has a thickness smaller than thicknesses of the fixed portion and the free portion.

According to some embodiments of the invention, a spacing bracket is disposed at the bottom of the first heating chamber.

According to some embodiments of the invention, the limiting bracket comprises a supporting leg and a tray body, the supporting leg is arranged on the bottom wall of the first heating bin and is arranged on at least one side of the first air inlet, the tray body is connected to the top of the supporting leg, and at least one through hole is formed in the tray body.

According to some embodiments of the invention, the first air outlet is detachably provided with a fixed cover provided with a guide portion for facilitating the entrance of the working substance.

According to some embodiments of the invention, a temperature control sensor is disposed within the first heating chamber and/or the second heating chamber.

According to some embodiments of the invention, the side walls of the first and second heating compartments are each provided with an insulating layer.

According to some embodiments of the present invention, the electronic heating device comprises a controller, wherein the controller is configured to receive a power-on command and switch on a power switch unit to control the electronic heating device to be powered on, receive a preheating command, control the first heating element to heat the first heating chamber to the preheating temperature, and control the second heating element to heat the second heating chamber to the retort temperature.

According to some embodiments of the invention, the electronic heating device further comprises a prompter, wherein the prompter is used for responding to the first reminding control signal sent by the controller to send out a first reminding signal, and the first reminding signal is used for reminding a user of starting to suck the low-temperature tobacco.

According to some embodiments of the present invention, the electronic heating device further comprises a temperature control sensor for receiving a sensing signal of temperature drop, wherein the temperature control sensor is disposed in the first heating chamber and/or the second heating chamber of the electronic heating device;

the controller is used for controlling the first heating element and the second heating element to respectively perform temperature compensation on the first heating chamber and the second heating chamber according to the induction signal, so that the electronic heating device is kept in a constant temperature state.

According to some embodiments of the present invention, the temperature control sensor is further configured to detect whether the number of times of temperature reduction reaches a predetermined number of times, or whether the accumulated heating time of the first heating element or the second heating element reaches a predetermined length of time, wherein the predetermined number of times is a preset number of times of temperature reduction of the first heating chamber or the second heating chamber, and the predetermined length of time is a preset heating length of time of the first heating element or the second heating element;

the controller is further used for sending a second reminding control signal to the prompter when the temperature control sensor determines that the cooling times reach a preset number, or the accumulated heating time of the first heating element or the second heating element reaches a preset duration;

the prompter is also used for responding to the second reminding control signal to send a second reminding signal, and the second reminding signal is used for reminding a user that the electronic heating device is about to be shut down;

the controller is also used for disconnecting the power switch unit so as to control the electronic heating device to be turned off.

According to a control method of an electronic heating apparatus of an embodiment of a second aspect of the present invention, the electronic heating apparatus is the electronic heating apparatus of the embodiment of the first aspect of the present invention, the control method includes the steps of:

the controller receives a starting instruction and switches on the power switch unit to control the electronic heating device to start;

the controller receives the preheating instruction, controls the first heating element to heat the first heating bin to the preheating temperature, and controls the second heating element to heat the second heating bin to the carbonization temperature.

According to the control method of the electronic heating device of the embodiment of the second aspect of the invention, at least the following beneficial effects are achieved: according to the invention, through a non-contact heating mode of hot air, a traditional heating element is not adopted, and a heating method of preheating preparation is adopted, so that the heating efficiency is improved, the heat can more uniformly act on working substances such as low-temperature tobacco and the like, the working substances can be fully dry distilled, no temperature field dead angle exists, and the user experience is improved.

According to some embodiments of the invention, after the controller receives the preheating command, controls the first heating element to heat the first heating chamber to the preheating temperature, and controls the second heating element to heat the second heating chamber to the retort temperature, the control method further comprises:

the controller sends a first reminding control signal to the prompter, controls the prompter to respond to the first reminding control signal so as to send the first reminding signal, and the first reminding signal is used for reminding a user that the user can begin to suck the low-temperature tobacco.

According to some embodiments of the invention, after the sending of the first reminder control signal to the reminder controlling the reminder to respond to the first reminder control signal to send out the first reminder signal, the control method further comprises:

the controller controls the first heating element and the second heating element to respectively perform temperature compensation on the first heating chamber and the second heating chamber according to a sensing signal of temperature drop received by the temperature control sensor, so that the electronic heating device keeps a constant temperature state.

According to some embodiments of the invention, the control method further comprises the steps of:

the controller controls the temperature control sensor to detect whether the temperature reduction times reach a preset number or not, or whether the accumulated heating time of the first heating element and the second heating element reaches a preset duration or not;

when the temperature control sensor determines that the cooling frequency reaches a preset frequency or the accumulated heating time of the first heating element and the second heating element reaches a preset duration, the controller sends a second reminding control signal to the prompter, and controls the prompter to respond to the second reminding control signal so that the prompter sends a second reminding signal, wherein the second reminding signal is used for reminding a user that the electronic heating device is about to be shut down;

the controller disconnects the power switch unit to control the electronic heating device to be shut down, wherein the preset times are the preset cooling times of the first heating chamber or the second heating chamber, the preset duration is the preset heating duration of the first heating element or the second heating element, and the second reminding signal is used for reminding a user that the electronic heating device is about to be shut down.

A controller according to an embodiment of the third aspect of the present invention is used in an electronic heating apparatus, and includes: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the control method of the embodiment of the second aspect of the invention when executing the program.

A computer storage medium according to an embodiment of the fourth aspect of the present invention stores computer-executable instructions for executing the control method of the embodiment of the second aspect of the present invention.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.

Drawings

The above aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a front sectional view of an electric heating apparatus according to an embodiment of the present invention;

fig. 2 is an exploded view of the electric heating apparatus shown in fig. 1;

fig. 3 is a perspective view of a check valve of an electric heating apparatus according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

FIG. 5 is a schematic structural diagram of an electric heating apparatus according to another embodiment of the present invention;

FIG. 6 is a flowchart illustrating a method of controlling an electric heating apparatus according to an embodiment of the present invention;

fig. 7 is a step diagram of a control method of an electric heating apparatus according to another embodiment of the present invention;

fig. 8 is a step diagram of a control method of an electric heating apparatus according to another embodiment of the present invention;

fig. 9 is a step diagram of a control method of an electric heating apparatus according to another embodiment of the present invention;

fig. 10 is an architecture diagram of a controller of an electric heating apparatus according to an embodiment of the present invention.

Reference numerals:

the tobacco heating device comprises an electronic heating device 100, low-temperature tobacco 101, a power supply 102, an outer tube 103, a fixed cover 104, a first heating chamber 105, a second heating chamber 106, an air inlet chamber 107, a first heating element 108, a second heating element 109, a one-way valve 110, a first air inlet 111, a second air outlet 112, a second air inlet 113, a third air inlet 114, an upper cover 115, a limiting support 116, a lower cover 117 and a circuit board 118;

an air inlet bin cover 201, a titanium alloy pipe 202, a fixing pipe 203, heat insulation aerogel 204, a first air outlet 205, an introduction hole 206 and a heat insulation ceramic pipe 207;

a fixed portion 301, a connecting portion 302, a free portion 303;

a guide portion 401;

a controller 501, a power switch unit 502, a first heating element 503, a first heating chamber 504, a second heating element 505, a second heating chamber 506, a prompter 507 and a temperature control sensor 508;

controller 1000, processor 1001, memory 1002, bus 1003.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, if there are first, second, third, etc. described only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be understood that the positional descriptions, such as the directions of up, down, front, rear, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly defined, terms such as arrangement, installation, connection and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The electronic heating device for low-temperature tobacco in the market at present is provided with a heating element and a power supply, wherein the heating element is used for heating, and the power supply is used for supplying power to the heating element and is controlled by a controller. The heating element mainly has two forms, one is a ceramic heating component, usually consists of a ceramic substrate, a thick film printing resistor and a protective film, the manufacturing process path of the ceramic heating component is longer, the substrate needs to be fired, the glaze hanging sintering, the thick film printing resistor, the resistor sintering, the glaze hanging protection sintering, the laser cutting, the resistance testing and other complex processes are needed, the finished product rate is low, and the manufacturing cost is high; the other is a metal heating component which consists of a metal shell, an insulating material and a heating body, and the metal heating component is usually also made into a needle type or a sheet type and inserted into the low-temperature tobacco for heating.

When using, the existing heating elements are all directly contacted with low-temperature tobacco to heat and bake, and accordingly the following defects can be caused:

1. heating is not uniform

The heating direction of the contact heating element is slowly thermally diffused towards the periphery along the core heating area of the heating element, the temperature in the core heating area is higher, the edge temperature is lower, a certain time is needed for reaching a uniform temperature equilibrium thermal field, the middle carbonization degree of the heated residual smoke is high, and the residual smoke is even blackened, and the outer side of the residual smoke is not completely consumed.

2. When the residual cigarette is pulled out, the residual cigarette is easy to remain in the heating bin

When the contact type low-temperature tobacco is heated, the heating element is in close contact with the low-temperature tobacco, precipitates of the low-temperature tobacco are easily adhered to the heating element at high temperature to cause involvement, and residual smoke is easily adhered to the heating element and is difficult to clean when the residual smoke is pulled out.

Based on the defects, the invention adopts a non-contact heating method, has simple structure, simple and easy manufacture and assembly, uniform heating, difficult damage and the like.

Referring specifically to fig. 1 to 3, an electronic heating device according to an embodiment of the first aspect of the present invention will be described.

Referring to fig. 1 and 2, an electronic heating device 100 according to an embodiment of the first aspect of the present invention is used for low-temperature dry distillation of a working substance, and the electronic heating device 100 specifically includes a first heating chamber 105 and a second heating chamber 106, the working substance is placed inside the first heating chamber 105, a first heating element 108 for heating the working substance to a preheating temperature is disposed on a side wall of the first heating chamber 105, and the first heating chamber 105 has a first air outlet 205 and a first air inlet 111; the second heating chamber 106 is internally provided with a second heating element 109, the second heating chamber 106 is provided with a second air outlet 112 communicated with the first air inlet 111 and a second air inlet 113 communicated with the outside, and the second heating element 109 is used for heating the air in the second heating chamber 106 to the carbonization temperature of the working substance; the dry distillation temperature is higher than the preheating temperature. The working substance may be low-temperature tobacco 101 or other substances suitable for retort use, such as a certain flavor, a drug for treating respiratory and pulmonary diseases, or an article having a calming effect or an excitement-improving effect. It should be noted that the first heating element 108 and the second heating element 109 may be resistance wires, resistance sheets, film-shaped heating films, or heating semiconductors, and the resistance wires and the resistance sheets may be made of iron chromium aluminum, iron chromium nickel, or the like. The first heating element 108 can be located on a wall of the sidewall of the first heating compartment 105 or inside the sidewall of the first heating compartment 105.

It should be noted that the preheating temperature depends on the type of the working substance, for example, for the low-temperature tobacco 101, the dry distillation temperature is usually between 315 ℃ and 350 ℃, and therefore, the preheating temperature of the first heating chamber 105 in the preheating stage is 260 ℃, 280 ℃ or 300 ℃, etc. The operating temperature of the second heating chamber 106 can be 330 ℃, 340 ℃, 350 ℃ or the like. Therefore, the preheating effect of the first heating bin 105 on the working substance is realized, the working substance reaches a certain preheating temperature, the subsequent dry distillation effect is provided, and for the low-temperature tobacco 101, the release of volatile substances can be more fully excited through the preheating effect, so that the taste of the low-temperature tobacco 101 is better; for example, assuming that there are more than ten effective substances in a low-temperature tobacco product, including substance a and substance B, the volatilization temperature of substance a and substance B is low, and is 260 ℃, by preheating the first heating chamber 105, for example, setting the preheating temperature to 260 ℃, substance a and substance B can be volatilized during the preheating process, and there is no loss of substance a and substance B, and a mixed aerosol containing more substances is formed for the user to inhale. Of course, the problem of whether or not a low-volatile substance such as the substance A or the substance B is chemically changed at the heating carbonization temperature is not considered for a while.

It can be understood that the hot air in the second heating chamber 106 reaching the dry distillation temperature enters the first heating chamber 105 through the second air outlet 112 and the first air inlet 111, and the preheated working substance is dry distilled in a non-contact heating manner by the hot air, and the second heating element can meet the use requirement by adopting a common heating wire or heating sheet, and does not need to adopt the existing complex manufacturing process to prepare a heating element (see the above contents specifically), so that the operation and use are more convenient, and the production cost is reduced; meanwhile, hot air diffusivity is better, heating is more uniform, no temperature field dead angle exists, dry distillation of working substances can be more sufficient, and user experience is improved. In addition, in order to facilitate the insertion of the heat generating components into the low temperature tobacco 101, the tobacco leaves of the low temperature tobacco 101 are oriented, which greatly increases the production cost, and in the electronic heating device 100 of the present invention, the tobacco leaves of the low temperature tobacco 101 do not need to be oriented.

It should be further noted that, referring to fig. 1 and fig. 2, the electronic heating device 100 includes an outer tube 103, a first heating chamber 105, a second heating chamber 106, a power supply 102, and the like are disposed inside the outer tube 103 from top to bottom, a chamber body of the first heating chamber 105 is made of a high temperature resistant material with good heat conduction performance, such as a metal material aluminum, titanium, stainless steel, copper, and the like, and may also be a ceramic product, such as a thick film printed resistor or a ceramic heating resistor around the ceramic product, and specifically, in some embodiments of the present invention, a fixing tube 203 is disposed inside the outer tube 103 at a position of the first heating chamber 105, the fixing tube 203 is used for fixing the first heating element 108, and a titanium alloy tube 202 is disposed inside the first heating element 108, so that heat can be rapidly diffused into the chamber body of the first heating chamber 105. A circuit board 118 for controlling the electronic heating device 100 is arranged below the second heating chamber 106, the circuit board 118 is electrically connected to the power supply 102, and the wires from the first heating element 108 and the second heating element 109 are electrically connected to the circuit board 118; the power source 102 is located in the lower region of the outer tube 103, and the lower port of the outer tube 103 is closed by a lower cap 117.

It is further noted that, referring to fig. 2, the second heating element 109 is configured as a coiled resistance heating sheet or a spiral resistance heating wire. After the resistance heating sheet is wound, a longitudinal air passing channel is formed, and when air flows through the air passing channel, the resistance heating sheet can be rapidly heated; the resistance heating wire is set to be the form of the spiral arrangement that extends along the longitudinal direction, forms air passing channel in the middle of the spiral resistance heating wire, and the heat transfer that resistance heating wire circular telegram produced is for the air that flows in air passing channel, can make the flow path of air longer, and heating time is also longer, and the speed of promotion temperature is faster.

In some embodiments, referring to fig. 1 and 2, the first heating chamber 105 further has an upper cover 115, the first air outlet 205 is formed on the upper cover 115, and the fixing cover 104 is detachably disposed at the first air outlet 205. It should be noted that, the fixing cover 104 is detachably connected to facilitate cleaning the inside of the first heating chamber 105 after the electronic heating device 100 is used for a period of time, in some embodiments, as shown in fig. 4, the fixing cover 104 is provided with a guide portion 401 for facilitating the entry of the working substance, the guide portion 401 is disposed on the inner peripheral wall of the introduction hole 206 of the fixing cover 104, for example, the inner peripheral wall of the introduction hole 206 of the fixing cover 104 is set to be reversely tapered, so as to improve the sealing performance between the low-temperature tobacco 101 and the first heating chamber 105, and at the same time, facilitate the insertion of the low-temperature tobacco 101 into the first heating chamber 105 through the guide portion 401.

In some embodiments, not shown, a one-way valve 110 is disposed at the second air inlet 113 to control the flow of ambient air into the second heating compartment 106 through the one-way valve 110. The check valve 110 is provided to prevent the hot air in the second heating compartment 106 from leaking to the outside through the second air inlet 113, and to allow the hot air to be introduced into the first heating compartment 105 through the second air outlet 112 for the retort work material. It should be noted that the check valve 110 may be a flap that can only be opened to one side, or a solenoid valve, or other structures that can be easily conceived by those skilled in the art, and the flap may be made of silicone, metal, or the like.

In some embodiments, referring to fig. 1 and 2, the electronic heating device 100 further includes an air inlet chamber 107, the air inlet chamber 107 is located below the second heating chamber 106, the second air inlet 113 is disposed on the bottom wall of the second heating chamber 106 and is communicated with the air inlet chamber 107, and the air inlet chamber 107 has a third air inlet 114 communicated with the outside. When the electric heating device 100 is in operation, hot air is collected in the second heating chamber 106, and when a user inhales, the outside air enters the second heating chamber 106 and is inhaled into the first heating chamber 105 along with the hot air, and due to the intervention of the outside air, the temperature of the hot air in the second heating chamber 106 is reduced to some extent, so that the efficiency of the hot air of the second heating chamber 106 for heating the working substance becomes low. The inlet bin 107 is adjacently arranged below the second heating bin 106, so that air in the inlet bin 107 can be preheated by heat radiation of the second heating bin 106, and then enters the second heating bin 106 when in use, thereby reducing the cooling effect of air newly entering the second heating bin 106 in the use process and improving the heating efficiency of the second heating bin 106. It can be understood that, in order to prevent foreign matters and the like from entering the air intake chamber 107 through the third air intake port 114, an air intake chamber cover 201 may be disposed at the third air intake port 114, and the air intake chamber cover 201 is movably connected to the outer tube 103, so that the air intake chamber cover 201 is opened when in use, and the air intake chamber cover 201 is closed when not in use. The intake housing cover 201 may be made of a flexible material such as rubber, etc., to reduce the manufacturing cost of the intake housing cover 201 and facilitate the opening and closing of the intake housing cover 201.

It should be noted that, when the air intake chamber 107 is provided, referring to fig. 1, the check valve 110 is provided at the third air intake port 114 to control the external air to enter the air intake chamber 107 through the check valve 110.

It should be noted that referring to fig. 1, a circuit board 118 for controlling the electronic heating device 100 is disposed below the air intake chamber 107 to avoid the heat radiation of the second heating chamber 106 from adversely affecting the circuit board 118. The circuit board 118 is electrically connected to the power source 102, and the leads from the first heating element 108 and the second heating element 109 are electrically connected to the circuit board 118. It is understood that the first heating element 108 and the second heating element 109 may be connected to the circuit board 118 in parallel or separately connected to the circuit board 118 or connected to the circuit board 118 in other ways according to actual needs, which are well known to those skilled in the art and will not be described herein.

In some embodiments, referring to fig. 3, the check valve 110 includes a fixed portion 301, a free portion 303 and a connecting portion 302 disposed between the fixed portion 301 and the free portion 303, the connecting portion 302 is made of a flexible material, and in a normal state, one side of the free portion 303 abuts against one end of the third air inlet 114. Thus, when a user inhales through the first air outlet 205, the free portion 303 can rotate around the connecting portion 302 to a side away from the third air inlet 114 to open the third air inlet 114, and when the user does not use the air cleaner, the free portion 303 can seal the third air inlet 114.

It should be noted that, in order to facilitate manufacturing, reduce production cost, and increase sealing performance between the free portion 303 and the third air inlet 114, the check valve 110 is integrally made of silicone, and in this case, in order to facilitate flexible movement of the connecting portion 302, the thickness of the connecting portion 302 is smaller than the thickness of the fixed portion 301 and the free portion 303.

It should also be noted that the bottom of the first heating chamber 105 is provided with a limit bracket 116. After the working substance, such as the low-temperature tobacco 101, is inserted into the first heating chamber 105 through the first air outlet 205, the peripheral wall of the first air outlet 205 can fix the low-temperature tobacco 101 at a first position, and the limiting bracket 116 can provide auxiliary fixation of a second position for the end of the low-temperature tobacco 101, and at the same time limit the insertion depth of the low-temperature tobacco 101.

In some embodiments, the position limiting bracket 116 includes a support leg disposed on the bottom wall of the first heating chamber 105 and disposed on at least one side of the first air inlet 111, and a tray body connected to the top of the support leg, the tray body being provided with at least one through hole. Through the arrangement, the end part of the low-temperature tobacco 101 directly abuts against the bottom wall of the tray body, so that the low-temperature tobacco 101 is prevented from being damaged by the limiting bracket 116, for example, tobacco leaves fall off from the low-temperature tobacco 101. It can be understood that the limiting bracket 116 is made of high temperature resistant ceramic, metal, etc., and the supporting leg and the tray body can be an integrated structure. It should be noted that, in order to form the through holes on the tray body, the tray body may be made into a hollow or grid structure.

In some embodiments, a temperature sensor (not shown) is disposed within the first heating chamber 105 and/or the second heating chamber 106, and the temperature sensor is electrically connected to the circuit board 118 via a wire. The temperature control sensor can monitor the temperature conditions of the first heating chamber 105 and the second heating chamber 106 in real time, provide temperature data for the controller of the electronic heating device 100, and facilitate the realization of the control function of the electronic heating device 100.

According to some embodiments of the present invention, the side walls of the first heating chamber 105 and the second heating chamber 106 are provided with thermal insulation layers, which may be heat insulation ceramic tubes 207 (shown in fig. 2), rock wool, heat insulation film, glass fiber, silica aerogel, or the like. Specifically, referring to fig. 2, in order to prevent excessive heat of the first heating element 108 from being radiated to the outer tube 103, a cylindrical heat insulation aerogel 204 (such as silica aerogel) is disposed between the fixing tube 203 and the outer tube 103 to achieve the effects of heat insulation and preservation, improve heating efficiency, avoid heat dissipation, and prevent the outer tube 103 from overheating.

It should be noted that, in addition to the above-described features, the electric heating device 100 may further include a switch button and a reminder (not shown in the drawings) for reminding, for example, a device that can emit sound, light or vibration, and of course, may further include an adjusting mechanism for adjusting the reminder.

The electronic heating device 100 according to the embodiment of the present invention, with reference to fig. 1 to 3, uses low-temperature tobacco 101 as an example to describe a specific use method thereof: firstly, inserting low-temperature tobacco 101 into a first heating chamber 105 through a guide opening on a fixed cover 104; starting up the computer; after the electronic heating device 100 is started, the electronic heating device starts to enter a preheating stage, the first heating chamber 105 and the second heating chamber 106 start to heat simultaneously, the preset heating temperature of the first heating chamber 105 is 300 ℃, and the preset heating temperature of the second heating chamber 106 is 350 ℃; when the first heating chamber 105 and the second heating chamber 106 reach the predetermined heating temperature, the indicator light of the electronic heating device 100 lights up, or simultaneously sends out a vibration indication; in the early preheating stage, along with the rising of the temperature of the first heating chamber 105 and the second heating chamber 106, the volume expansion and the pressure rise of the gas in the first heating chamber 105 and the second heating chamber 106 can be caused, and due to the existence of the one-way valve 110, the outside air can not be discharged, so that the high-temperature and high-pressure air flow in the first heating chamber 105 and the second heating chamber 106 can be discharged outwards along the introduction hole 206 of the fixed cover 104 of the low-temperature tobacco 101, meanwhile, the hot air in the second heating chamber 106 can enter the low-temperature tobacco 101, the preheating process of the low-temperature tobacco 101 is accelerated, and meanwhile, the temperature in the two chambers can be more uniform due to the flowing of the air flow; the user can suck after receiving the prompt signal; during suction, the one-way valve 110 is opened, high-temperature air in the second heating chamber 106 enters the interior of the preheated low-temperature tobacco 101 in the first heating chamber 105 to perform rapid and sufficient dry distillation on the low-temperature tobacco 101, when the suction action is completed or just starts, the temperatures in the first heating chamber 105 and the second heating chamber 106 are reduced, the temperature control sensors can synchronously detect the temperature reduction condition and start to perform temperature compensation on the first heating chamber 105 and the second heating chamber 106 to a preparation state of suction, so that one complete suction action is completed, and the next preparation action is started.

It should be noted that, when the electronic heating device 100 starts to enter the preheating phase after the power is turned on, the first heating chamber 105 and the second heating chamber 106 may start to heat at the same time, or the second heating chamber 105 and the second heating chamber 106 may start to heat at different times according to the setting, for example, after the first heating chamber 105 starts to heat for 5 seconds, the second heating chamber 106 starts to heat again.

The mechanical structure of the electric heating device is described in detail above, and then referring to fig. 5, the control structure of the electric heating device is described in detail below based on the mechanical structure of the electric heating device.

In some embodiments, the electronic heating device may further include a controller 501, which is configured to receive a power-on command and turn on the power switch unit 502 to control the electronic heating device to be powered on, receive a preheating command, control the first heating element 503 to heat the first heating chamber 504 to a preheating temperature, and control the second heating element 505 to heat the second heating chamber 506 to a retort temperature.

It should be noted that the obtaining of the power-on instruction may adopt one or more modes such as a button, a touch screen, or a voice control, and specifically, may be set as: the computer can be started by continuously pressing the key for three times, and can also be continuously pressed for two times or more than four times. By setting multiple times of key starting, the false starting can be avoided; in addition, the computer can be powered on by pressing a key once, which is not limited herein.

In some embodiments, further, the electronic heating device may further include a reminder 507, wherein the reminder 507 is configured to respond to the first reminding control signal sent by the controller 501 to send out a first reminding signal, and the first reminding signal is configured to remind a user that the user can start smoking the low-temperature tobacco.

It should be noted that the first reminding signal may be flashing, sound or vibration, etc. to make the user see, hear or feel, so as to remind the user to start smoking the low-temperature tobacco.

In some embodiments, further, the electronic heating device may further include a temperature control sensor 508, the temperature control sensor 508 is configured to receive a sensing signal of temperature drop, and the temperature control sensor 508 is disposed in the first heating chamber 504 and/or the second heating chamber 506 of the electronic heating device; the controller 501 is configured to control the first heating element 503 and the second heating element 505 to perform temperature compensation on the first heating chamber 504 and the second heating chamber 506 respectively according to the sensing signal, so that the electronic heating apparatus 100 maintains a constant temperature state.

In some embodiments, the temperature control sensor 508 is further configured to detect whether the number of times of temperature decrease reaches a predetermined number, or whether the accumulated heating time of the first heating element 503 or the second heating element 505 reaches a predetermined time duration, where the predetermined number is the preset number of times of temperature decrease of the first heating chamber 504 or the second heating chamber 506, and the preset time duration is the preset heating time duration of the first heating element 503 or the second heating element 505;

the controller 501 is further configured to send a second reminding control signal to the prompter 507 when the temperature control sensor 508 determines that the cooling frequency reaches the predetermined frequency, or the accumulated heating time of the first heating element 503 or the second heating element 505 reaches the predetermined duration;

the prompter 507 is also used for responding to a second reminding control signal to send a second reminding signal, and the second reminding signal is used for reminding a user that the electronic heating device is about to be powered off;

the controller 501 is also used to turn off the power switch unit 502 to control the electronic heating apparatus to shut down.

Referring to fig. 6 to 9, a control method of an electronic heating apparatus according to an embodiment of the second aspect of the present invention, that is, the electronic heating apparatus according to the embodiment of the first aspect of the present invention, is described, and the electronic heating apparatus includes a controller.

Referring to fig. 6, the control method includes the steps of:

s610, the controller receives a starting-up instruction and switches on the power switch unit to control the electronic heating device to start up;

it should be noted that the obtaining of the power-on instruction may adopt one or more modes such as a button, a touch screen, or a voice control, and specifically, may be set as: the computer can be started by continuously pressing the key for three times, and can also be continuously pressed for two times or more than four times. By setting multiple times of key starting, the false starting can be avoided; in addition, the computer can also be powered on by pressing a key once, which is not limited in detail herein.

S620, the controller receives a preheating instruction, controls the first heating element to heat the first heating bin to a preheating temperature, and controls the second heating element to heat the second heating bin to a carbonization temperature.

In the embodiment of the invention, the second heating bin in the electronic heating device is heated to the dry distillation temperature through the step S620, so that a user can feel better mouthfeel when smoking low-temperature tobacco.

It should be noted that the acquisition of the warm-up command may adopt one or more modes such as a button, a touch screen, or a voice control, and specifically, may be set as: continuously pressing for three seconds to enter a preheating stage. Taking low-temperature tobacco as an example, the electronic heating device starts a preheating stage, and the first heating chamber and the second heating chamber start heating simultaneously, for example, the preset heating temperature of the first heating chamber is set to 290 ℃, and the preset heating temperature of the second heating chamber is set to 340 ℃; through the preheating effect, the release of volatile substances in the low-temperature tobacco can be more fully excited, so that the taste of the low-temperature tobacco is better.

It should be noted that, the electronic heating device may further include a prompt, as shown in fig. 7, in the embodiment of the present invention, step S710 and step S720 are similar to step S610 and step S620 in the foregoing embodiment, and detailed description thereof is omitted here. The steps of the embodiment of the invention are as follows:

s710, the controller receives a starting command and switches on the power switch unit to control the electronic heating device to start;

s720, the controller receives a preheating instruction, controls the first heating element to heat the first heating bin to a preheating temperature, and controls the second heating element to heat the second heating bin to a carbonization temperature;

and S730, the controller sends a first reminding control signal to the prompter, and the control prompter responds to the first reminding control signal to send the first reminding signal.

In the embodiment of the invention, after the second heating bin is heated to the dry distillation temperature by the second heating element, the controller in the electronic heating device can control the prompter to send out the first reminding signal to remind a user of starting to suck the low-temperature tobacco.

It should be noted that, because preheating needs a period of time, if there is no preheating stage, the first few mouths of the tobacco can be vacuumed or the volatile matter is unsaturated during smoking, which greatly affects the taste of the low-temperature tobacco. Of course, how to reach the use state is judged, temperature detection can be carried out through the temperature control sensor, it is accurate to reach preset temperature, for example, after the starting up, the electronic heating device starts the preheating stage, the first heating chamber and the second heating chamber start to heat up simultaneously, the temperature of the first heating chamber reaches the preset heating temperature of 300 ℃, and when the temperature of the second heating chamber reaches the preset heating temperature of 350 ℃, the prompter is controlled to send out a first reminding signal, and certainly, the preset heating temperature can be adjusted according to the type of the low-temperature tobacco. The time when the prompter sends the first reminding signal may also be set according to the heating time, for example, the first reminding signal is sent after one minute or two minutes or other time after the startup is set, and of course, the preset time may be adjusted according to specific situations. After the user sees the first reminding signal, the user can suck.

In some embodiments, referring to fig. 8, a temperature control sensor can be disposed within the first heating chamber and/or the second heating chamber. In the embodiment of the present invention, steps S810 to S820 are similar to steps S610 to S620 and steps S710 to S720 in the previous embodiment, and step S830 is similar to step S730 in the previous embodiment, and detailed description thereof is omitted here. The steps of the embodiment of the invention are as follows:

s810, the controller receives a starting instruction and switches on the power switch unit to control the electronic heating device to start;

s820, the controller receives a preheating instruction, controls the first heating element to heat the first heating bin to a preheating temperature, and controls the second heating element to heat the second heating bin to a carbonization temperature;

s830, the controller sends a first reminding control signal to the prompter, and the prompter is controlled to respond to the first reminding control signal so as to send out a first reminding signal;

and S840, the controller controls the first heating element and the second heating element to respectively perform temperature compensation on the first heating bin and the second heating bin according to the sensing signal of temperature drop received by the temperature control sensor, so that the electronic heating device keeps a constant temperature state.

It should be noted that, after the prompter sends out the reminder signal, the user can immediately suck, and if the user does not suck, the controller controls the temperatures of the first heating chamber and the second heating chamber to be maintained basically unchanged. When the user sucks and sucks, the check valve 110 in fig. 1 is opened, and the high-temperature air in the second heating chamber enters the interior of the preheated low-temperature tobacco in the first heating chamber, so that the low-temperature tobacco is quickly and fully dry distilled. When the pumping action is completed or just started, the temperatures in the first heating chamber and the second heating chamber are reduced, the temperature control sensors can synchronously detect the temperatures and start to perform temperature compensation on the first heating chamber and the second heating chamber to a preparation state of pumping so as to keep the first heating chamber and the second heating chamber at a preset temperature state.

In some embodiments, referring to fig. 9, in the embodiments of the present invention, steps S910 to S920 are similar to steps S610 to S620, steps S710 to S720, and steps S810 to S820 in the previous embodiments, step S930 is similar to step S730 and step S830 in the previous embodiments, and step S940 is similar to step S840 in the previous embodiments, and detailed description thereof is omitted. The control method comprises the following steps:

s910, the controller receives a power-on command and switches on the power switch unit to control the electronic heating device to be powered on;

s920, the controller receives a preheating instruction, controls the first heating element to heat the first heating bin to a preheating temperature, and controls the second heating element to heat the second heating bin to a carbonization temperature;

s930, the controller sends a first reminding control signal to the prompter, and the control prompter responds to the first reminding control signal to send out a first reminding signal;

s940, the controller controls the first heating element and the second heating element to respectively perform temperature compensation on the first heating bin and the second heating bin according to the sensing signal, received by the temperature control sensor, of temperature reduction so as to enable the electronic heating device to keep a constant temperature state;

s950, the controller controls the temperature control sensor to detect whether the temperature reduction times reach the preset times or not, or whether the accumulated heating time of the first heating element or the second heating element reaches the preset duration or not;

in the embodiment of the present invention, the temperature control sensor detects whether the temperature reduction time reaches a predetermined time or not, or whether the accumulated heating time of the first heating element or the second heating element reaches a predetermined time, if yes, the controller executes step S960.

In the embodiment of the invention, the preset times are the preset cooling times of the first heating chamber or the second heating chamber, and the preset time is the preset heating time of the first heating element or the second heating element.

S960, the controller sends a second reminding control signal to the prompter, and the prompter is controlled to respond to the second reminding control signal so as to send out a second reminding signal;

in the embodiment of the invention, the second reminding signal is used for reminding a user that the electronic heating device is about to be powered off.

S970, the controller disconnects the power switch unit to control the electronic heating device to be shut down;

it should be noted that, in order to meet the usage scenario of the user, a plurality of shutdown methods may be set for the user to select. For example, shutdown can be performed when the cooling frequency monitored by the temperature control sensor reaches a predetermined frequency, the cooling frequency can be set to be consistent with the suction frequency by default, each type of low-temperature tobacco product has a corresponding suggestion of the suction frequency, if the cooling frequency exceeds the suggestion frequency, the taste is poor, appropriate accumulated suction frequency is set according to the type of the low-temperature tobacco product, for example, 10 times, 12 times and the like, and if the set accumulated suction frequency is reached, the prompter is controlled to send a reminding signal and control the electronic heating device 100 to shutdown; besides, the time for turning off the electronic heating device 100 can be set according to the accumulated heating time, on one hand, the heating time is matched with the type of the low-temperature tobacco 101 and the smoking habit of the user, so that the turning off time of the electronic heating device 100 can be conveniently controlled, for example, set to 3 minutes or 3.5 minutes, and on the other hand, the turning off time is controlled by the accumulated heating time, so that the electric quantity of the power supply 102 of the electronic heating device 100 can be saved, and unreasonable consumption can be avoided, and it can be understood that the turning off time can also be controlled by combining the accumulated smoking times and the accumulated heating time, for example, in some cases, after the user turns on the electronic heating device to warm up, the electronic heating device 100 is automatically turned off after the accumulated heating time reaches the preset time, and thus, the energy can be saved, and meanwhile, the electronic cigarette can be prevented from being damaged by long-time heating, the service life of the device is influenced, and the potential safety hazard can be avoided.

Referring to fig. 10, a controller 1000 according to a third aspect of the present invention is shown, and the controller 1000 may be any type of control module, such as a control board, a control box, a control chip, and the like.

Specifically, the controller 1000 includes: one or more processors and memory, one processor 1001 and memory 1002 are illustrated in fig. 10. The processor 1001 and the memory 1002 may be connected by a bus 1003 or otherwise.

The memory 1002, as a non-transitory computer readable storage medium, can be used for storing a non-transitory software program and a non-transitory computer executable program, such as the control method of the electronic heating apparatus 100 in the embodiment of the second aspect of the present invention. The processor 1001 implements the control method of the electronic heating apparatus 100 in the second aspect embodiment of the present invention by executing the non-transitory software program and the instructions stored in the memory 1002.

The memory 1002 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the stored data area may store data and the like necessary for executing the control method of the electronic heating apparatus 100 in the above-described second aspect embodiment. Further, the memory 1002 may include high speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 1002 may optionally include memory located remotely from the processor, which may be connected to the terminal via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Non-transitory software programs and instructions required to implement the control method of the electronic heating apparatus 100 in the second aspect embodiment described above are stored in the memory 1002, and when executed by the one or more processors 1001, perform the control method of the electronic heating apparatus 100 in the second aspect embodiment described above, for example, perform the method steps S610 to S620 in fig. 6, the method steps S710 to S730 in fig. 7, the method steps S810 to S850 in fig. 8, and the method steps S910 to S970 in fig. 9 described above.

In a fourth aspect of the present invention, a computer-readable storage medium is provided, which stores computer-executable instructions, which are executed by one or more control processors 1001, for example, by one processor 1001 in fig. 9, and which can make the one or more processors 1001 execute the control method of the electronic heating apparatus 100 in the second aspect of the embodiment, for example, execute the method steps S610 to S620 in fig. 6, the method steps S710 to S730 in fig. 7, the method steps S810 to S850 in fig. 8, and the method steps S910 to S970 in fig. 9 described above.

The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor 1001, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as integrated circuits, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as is well known to those skilled in the art.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (21)

1. An electronic heating device for low-temperature dry distillation of working substances, comprising:

the first heating bin is internally provided with the working substance, the side wall of the first heating bin is provided with a first heating element for heating the working substance to a preheating temperature, and the first heating bin is provided with a first air outlet and a first air inlet;

the second heating bin is internally provided with a second heating element, the second heating bin is provided with a second air outlet communicated with the first air inlet and a second air inlet communicated with the outside, and the second heating element is used for heating the air in the second heating bin to the dry distillation temperature of the working substance;

the dry distillation temperature is higher than the preheating temperature.

2. The electric heating device of claim 1, wherein a one-way valve is disposed at the second air inlet to control the outside air to enter the second heating chamber through the one-way valve.

3. The electric heating device of claim 1, further comprising an air inlet chamber located below the second heating chamber, wherein the second air inlet is disposed on a bottom wall of the second heating chamber and is communicated with the air inlet chamber, and the air inlet chamber has a third air inlet communicated with the outside.

4. The electric heating device of claim 3, wherein a one-way valve is disposed at the third air inlet to control the external air to enter the air inlet bin through the one-way valve.

5. The electric heating device according to claim 4, wherein the check valve comprises a fixed portion, a free portion and a connecting portion disposed between the fixed portion and the free portion, the connecting portion is made of a flexible material, and in a normal state, one side of the free portion abuts against one end of the third air inlet.

6. The electric heating apparatus according to claim 5, wherein the check valve is integrally made of silicone, and the thickness of the connecting portion is smaller than the thickness of the fixed portion and the free portion.

7. The electric heating device according to any one of claims 1 to 6, wherein a limiting bracket is arranged at the bottom of the first heating chamber.

8. The electric heating apparatus of claim 7, wherein the limiting bracket comprises a supporting leg and a tray body, the supporting leg is disposed on the bottom wall of the first heating chamber and disposed on at least one side of the first air inlet, the tray body is connected to the top of the supporting leg, and at least one through hole is disposed on the tray body.

9. The electric heating apparatus according to any one of claims 1 to 6, wherein a fixing cover is detachably provided at the first air outlet, and the fixing cover is provided with a guide portion for facilitating entry of the working substance.

10. The electric heating device according to any one of claims 1 to 6, wherein a temperature control sensor is disposed in the first heating chamber and/or the second heating chamber.

11. The electric heating device according to any one of claims 1 to 6, wherein the side walls of the first heating compartment and the second heating compartment are each provided with a thermal insulation layer.

12. The electric heating device according to any one of claims 1 to 6, characterized in that it comprises:

the controller is used for receiving a starting-up instruction and switching on the power switch unit so as to control the electronic heating device to start up, receiving a preheating instruction, controlling the first heating element to heat the first heating bin to the preheating temperature, and controlling the second heating element to heat the second heating bin to the carbonization temperature.

13. The electric heating apparatus according to claim 12, further comprising:

and the prompter is used for responding to the first reminding control signal sent by the controller so as to send a first reminding signal, and the first reminding signal is used for reminding a user of starting to suck the low-temperature tobacco.

14. The electric heating apparatus of claim 13, further comprising:

the temperature control sensor is used for receiving a sensing signal of temperature reduction and is arranged in the first heating bin and/or the second heating bin of the electronic heating device;

the controller is used for controlling the first heating element and the second heating element to respectively perform temperature compensation on the first heating chamber and the second heating chamber according to the induction signal, so that the electronic heating device is kept in a constant temperature state.

15. Electronic heating device according to claim 14,

the temperature control sensor is further configured to detect whether a cooling frequency reaches a predetermined frequency, or whether an accumulated heating time of the first heating element or the second heating element reaches a predetermined duration, where the predetermined frequency is a preset cooling frequency of the first heating chamber or the second heating chamber, and the predetermined duration is a preset heating duration of the first heating element or the second heating element;

the controller is further used for sending a second reminding control signal to the prompter when the temperature control sensor determines that the cooling times reach a preset number, or the accumulated heating time of the first heating element or the second heating element reaches a preset duration; the prompter is also used for responding to the second reminding control signal to send a second reminding signal, and the second reminding signal is used for reminding a user that the electronic heating device is about to be powered off;

the controller is also used for disconnecting the power switch unit so as to control the electronic heating device to be shut down.

16. A control method of an electric heating apparatus according to any one of claims 12 to 15, comprising:

the controller receives a starting instruction and switches on the power switch unit to control the electronic heating device to start;

the controller receives the preheating instruction, controls the first heating element to heat the first heating bin to the preheating temperature, and controls the second heating element to heat the second heating bin to the carbonization temperature.

17. The control method of claim 16, wherein after the controller receives the preheat command, controls the first heating element to heat the first heating compartment to the preheat temperature, and controls the second heating element to heat the second heating compartment to the retort temperature, the control method further comprises:

the controller sends a first reminding control signal to the prompter, controls the prompter to respond to the first reminding control signal so as to send the first reminding signal, and the first reminding signal is used for reminding a user that the user can begin to suck the low-temperature tobacco.

18. The control method according to claim 17, wherein after the sending of the first alert control signal to the prompter, controlling the prompter to respond to the first alert control signal to issue the first alert signal, the control method further comprises:

the controller controls the first heating element and the second heating element to respectively perform temperature compensation on the first heating chamber and the second heating chamber according to a sensing signal of temperature drop received by the temperature control sensor, so that the electronic heating device keeps a constant temperature state.

19. The control method according to claim 18, characterized by further comprising the step of:

the controller controls the temperature control sensor to detect whether the temperature reduction times reach a preset number or not, or whether the accumulated heating time of the first heating element and the second heating element reaches a preset duration or not;

when the temperature control sensor determines that the cooling frequency reaches a preset frequency, or the accumulated heating time of the first heating element and the second heating element reaches a preset duration, the controller sends a second reminding control signal to the prompter, and controls the prompter to respond to the second reminding control signal so that the prompter sends a second reminding signal, wherein the second reminding signal is used for reminding a user that the electronic heating device is about to be shut down;

the controller is disconnected the power switch unit to control the electronic heating device to shut down, wherein the preset times are preset cooling times of the first heating chamber or the second heating chamber, the preset time is preset heating time of the first heating element or the second heating element, and the second reminding signal is used for reminding a user that the electronic heating device is about to shut down.

20. A controller for use in an electronic heating device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executing the program implements a control method according to any of claims 16 to 19.

21. Computer storage medium storing computer-executable instructions for performing the control method of any one of claims 16 to 19.

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