WO2019062168A1 - Temperature control system for heating piece of electronic cigarette - Google Patents

Abstract

A temperature control system (100) for a heating piece of an electronic cigarette, comprising a power supply unit (102), a heating unit (104), a heat conducting unit (106), a feedback unit (108), and a processing unit (110). The power supply unit (102) is used for supplying power for the heating unit (104). The heating unit (104) is used for conducting heat energy to the heat conducting unit (106). The heat conducting unit (106) is used for feeding back heat energy conducted by the heating unit (104) to the feedback unit (108). The feedback unit (108) is used for converting the heat energy into feedback data and transmitting the feedback data to the processing unit (110). The processing unit (110) is used for determining a target temperature corresponding to the feedback data according to the feedback data and controlling ON and OFF of the power supply unit (102) according to the target temperature. According to the present application, the temperature of the heat conducting unit (106) can be controlled within an appropriate range in real time, and thus underheating or overheating is avoided. Moreover, the disturbing influence is significantly reduced, the precision of temperature control is improved, and the space of the heat conducting unit (106) is fully utilized.

Description

Temperature control system for electronic cigarette heating sheet Technical field

The invention belongs to the field of electronic cigarettes, and more particularly to a temperature control system for an electronic cigarette heating sheet.

Background technique

Electronic cigarettes are electronic products that mimic cigarettes and have a similar appearance and taste to cigarettes. Most of the existing electronic cigarettes use a method such as burning atomized tobacco to turn nicotine into steam, and let the user inhale a product. With the development of technology, there is now an electronic cigarette on the market that does not burn tobacco, but only keeps the tobacco at a certain temperature, which can bring about the smoking experience and effectively reduce the absorption of harmful substances.

technical problem

However, there is currently no effective technical solution in the art to keep the tobacco in a constant temperature range quickly and accurately.

Technical solution

In order to solve the above technical problem, a temperature control system for an electronic cigarette heating sheet is provided, the temperature control system comprising a power supply unit, a heating unit, a heat conduction unit, a feedback unit, and a processing unit;

The power supply unit is connected to the heating unit for supplying power to the heating unit; the heating unit is in contact with one side of the heat conducting unit for conducting thermal energy to the heat conducting unit;

The other side of the heat conducting unit is connected to the feedback unit, and the heat conducting unit is further configured to feed back thermal energy conducted by the heating unit to the feedback unit; the feedback unit is coupled to the processing unit for converting the thermal energy into feedback data. And transmitting the feedback data to the processing unit; the processing unit is connected to the power supply unit, the processing unit is configured to determine a target temperature corresponding to the feedback data according to the feedback data, and control the power supply unit according to the target temperature Turn it on and off.

Further, the feedback unit includes a thermistor, and the feedback data is a resistance value of the thermistor;

The processing unit determines the target temperature according to a temperature-resistance value correspondence relationship of the pre-stored thermistor.

Further, the heating unit includes a resistance wire; the heat conduction unit includes a ceramic sheet.

Further, the processing unit further includes a determining unit; the target temperature corresponds to a temperature of the heat conducting unit; and the determining unit is configured to determine whether the temperature of the heat conducting unit is in a range of 210° C. to 450° C.

If the temperature of the heat conduction unit is in the range of 210 ° C to 450 ° C, the power supply unit is turned off;

If the temperature of the heat conduction unit is lower than 210 ° C, the power supply unit is turned on;

If the temperature of the heat transfer unit is higher than 450 ° C, the power supply unit is turned off and an alarm is issued.

Further, the determining unit is configured to determine whether the temperature of the heat conducting unit is in a range of 290 ° C to 350 ° C;

If the temperature of the heat conduction unit is in the range of 290 ° C ~ 350 ° C, the power supply unit is turned off;

If the temperature of the heat conduction unit is lower than 290 ° C, the power supply unit is turned on;

If the temperature of the heat conducting unit is higher than 350 ° C, the power supply unit is turned off and an alarm is issued.

Further, the heating unit and the feedback unit are respectively attached to the one side and the other side of the heat conduction unit.

Further, a layer of glass phase coating is disposed on the surface of the heat conducting unit, the heating unit and the feedback unit.

Further, the glass phase coating comprises a glaze.

According to another aspect of the present application, there is provided a heating rod for an electronic cigarette, the heating rod having a temperature control system as described above.

According to another aspect of the present application, an electronic cigarette system is provided, comprising the heating rod as described above, and an electronic cigarette case for containing the heating rod and charging the heating rod.

According to another aspect of the present application, there is provided a temperature control method for an electronic cigarette heat generating sheet based on the temperature control system as described above, the temperature control method comprising the steps of:

The feedback unit obtains feedback data converted by the thermal energy fed back by the heat conduction unit, and sends the feedback data to the processing unit, and the thermal energy is transmitted from the power supply unit to the heating unit, and then the thermal energy is transmitted to the heat conduction unit by the heating unit;

The processing unit determines a target temperature corresponding to the feedback data according to the feedback data;

The processing unit controls opening and closing of the power supply unit according to the target temperature;

When the temperature of the heat conduction unit is lower than 210 ° C, the processing unit turns on the power supply unit;

In the case where the temperature of the heat transfer unit is higher than 450 ° C, the processing unit turns off the power supply unit and prompts.

Beneficial effect

The invention has the beneficial effects of controlling the opening and closing of the power supply unit based on the target temperature, and controlling the temperature range of the heat conduction unit within a proper range in real time, thereby avoiding the situation of insufficient heating or overheating; The feedback unit is placed on both sides of the heat conduction unit. On the one hand, the feedback unit is not directly in contact with the heating source, which significantly reduces the influence of interference and improves the accuracy of the temperature control. On the other hand, the space of the heat conduction unit is fully utilized.

DRAWINGS

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, wherein:

1 is a schematic view of a heating rod according to an embodiment of the present application;

2 is a structural diagram of a temperature control system of an electronic cigarette heat generating sheet according to an embodiment of the present application;

3 is an electronic system in accordance with an embodiment of the present application;

4 is a flow chart of a temperature control method of an electronic cigarette heat generating sheet according to an embodiment of the present application.

Embodiments of the invention

In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The specific embodiments described in the specification are to be construed as illustrative only and not limiting.

In one aspect, the present application provides a temperature control system 100 for an electronic cigarette heat generating sheet. As shown in FIG. 1, the temperature control system 100 can be applied to an electronic cigarette heating rod 10. The temperature control system 100 is located at one end of the electronic heating rod, and the heat conducting unit 106 can be inserted into the tobacco to heat the tobacco. When the heating temperature is too low, the tobacco cannot be heated sufficiently, so it cannot be used normally; when the heating temperature is too high, excessive smoke is generated, and the tobacco consumption speed is too fast, which is not conducive to the use experience.

Based on this, as shown in FIG. 2 , the temperature control system 100 includes a power supply unit 102 , a heating unit 104 , a heat conduction unit 106 , a feedback unit 108 , and a processing unit 110 .

The power supply unit 102 is connected to the heating unit 104 for supplying power to the heating unit 104.

Specifically, the heating unit 104 includes an electrocaloric material that converts electrical energy into thermal energy.

The heating unit 104 is in contact with one side of the heat conducting unit 106 for conducting thermal energy to the heat conducting unit.

It should be noted that, in a preferred embodiment, the heat conducting unit 106 is a sheet-like structure, and the heat conducting unit has good thermal conductivity. Therefore, the heating unit 104 is in contact with one side of the heat transfer unit 106, and the other side of the heat transfer unit 106 is also sufficiently heated.

The other side of the heat conducting unit 106 is connected to the feedback unit 108. The heat conducting unit 106 is further configured to feed back the thermal energy conducted by the heating unit 104 to the feedback unit 108.

The feedback unit 108 is coupled to the processing unit 110 for converting the thermal energy into feedback data and transmitting the feedback data to the processing unit.

The feedback unit 108 is preferably a sensor, and further, the feedback unit 108 is a thermistor. The feedback data is the resistance of the thermistor.

The processing unit 110 is connected to the power supply unit 102. The processing unit 110 is configured to determine a target temperature corresponding to the feedback data according to the feedback data, and control opening and closing of the power supply unit according to the target temperature.

It should be noted here that the target temperature corresponding to the feedback data includes the temperature of the feedback unit 108. Those skilled in the art can understand that when the feedback unit 108 is a thermistor, the feedback data, that is, the resistance value of the feedback unit 108 can directly correspond to the temperature of the feedback unit 108; however, due to the feedback unit 108 and the heat conduction The unit 106 is connected. Therefore, the corresponding relationship between the resistance value of the feedback unit 108 and the heat conduction unit 106 can be obtained based on the thermal conduction performance of the two units. Based on the above description only as an example, the target temperature also includes the temperature of the heat conducting unit 106.

In summary, the present embodiment controls the opening and closing of the power supply unit 102 based on the target temperature, and controls the temperature range of the heat conduction unit 106 to an appropriate range in real time, thereby avoiding insufficient heating or overheating. In addition, by dividing the heating unit 104 and the feedback unit 108 on both sides of the heat conduction unit 106, on the one hand, the feedback unit 108 is not directly in contact with the heating source, the interference effect is significantly reduced, and the accuracy of the temperature control is improved, and on the other hand, The space of the heat transfer unit is utilized.

In a preferred embodiment, the feedback unit 108 includes a thermistor, and the feedback data is the resistance value of the thermistor. In addition, the processing unit 100 pre-stores the temperature-resistance value correspondence relationship of the thermistor, and determines the temperature of the thermistor in combination with the received resistance value and the temperature-resistance value of the thermistor, and based on the heat The temperature of the sensitive resistor is related to the temperature of the heat conducting unit to further determine the temperature of the heat conducting unit. Those skilled in the art will appreciate that the temperature relationship of the thermistor and the temperature relationship of the heat conducting unit can be based on the thermal conductivity of the thermistor and the heat conducting unit, combined with a limited number of experiments.

In a preferred embodiment, the heating unit 104 includes a resistance wire, and further preferably, the resistance wire is a tungsten wire.

In a preferred embodiment, the thermally conductive unit 106 comprises a ceramic heater chip.

In a preferred embodiment, the processing unit 110 further includes a determining unit; the target temperature corresponds to a temperature of the heat conducting unit; and the determining unit is configured to determine whether the temperature of the heat conducting unit is in a range of 210 ° C to 450 ° C;

When the temperature of the heat conduction unit 106 is in the range of 210 ° C to 450 ° C, the power supply unit is turned off;

If the temperature of the heat conduction unit 106 is lower than 210 ° C, the power supply unit is turned on;

If the temperature of the heat conducting unit 106 is higher than 450 ° C, the power supply unit is turned off and an alarm is issued.

Specifically, in the room temperature environment, the power supply unit 102 is turned on, and the heat transfer unit 106 receives heat, and the temperature is raised from room temperature to 210 ° C, wherein 210 ° C is the lowest temperature at which the electronic cigarette can be normally used. At this time, the power supply unit 102 continues to heat the heating unit. In a preferred embodiment, when the temperature of the heat conducting unit 106 rises to 300 ° C or higher, the power supply unit 102 can be turned off to stop heating; when the temperature of the heat conducting unit 106 is lower than 300 ° C, the power supply unit 102 can be turned back on. Thus, the heat conducting unit 106 is maintained at an optimum temperature, i.e., 300 °C.

Since the electronic cigarette needs to be cleaned after being used for a period of time, the temperature of the heat conducting unit 106 can also be controlled at 450 ° C, which is the upper temperature limit of the heat conducting unit 106. The heat transfer unit 106 can be sterilized and cleaned at 450 ° C. When the temperature of the heat conduction unit 106 is higher than 450 ° C, the power supply unit 102 is turned off and an alarm is issued.

If the temperature of the heat conduction unit 106 is maintained at a temperature point, the power supply unit 102 needs to be frequently turned on and off, and power consumption is large. Thus, in a preferred embodiment, the temperature of the thermally conductive unit 106 is maintained in the range of 290 °C to 350 °C. In the case where the temperature of the heat conduction unit 106 is in the range of 290 ° C to 350 ° C, the power supply unit is turned off; if the temperature of the heat conduction unit 106 is lower than 290 ° C, the power supply unit is turned on; if the temperature of the heat conduction unit 106 is Above 350 ° C, the power supply unit is turned off and an alarm is issued.

In a preferred embodiment, the heating unit 104 and the feedback unit 108 are attached to the one side and the other side of the heat conducting unit 106, respectively. By attaching the connection manner, the contact area can be maximized, so that the heating unit 104 can sufficiently transfer thermal energy to the heat conduction unit 106 to shorten the heating cycle; likewise, the heat conduction unit 106 can also fully transfer thermal energy to the Feedback unit 108.

In a preferred embodiment, in order to avoid direct exposure of the heat conducting unit 106, the heating unit 104 and the feedback unit 108, performance stability is reduced, or during heating of the tobacco, due to the heat conducting unit 106, the heating unit 104 and the texture of the surface of the feedback unit 108 cannot smoothly heat the tobacco, so a glass phase coating is disposed on the surface of the heat conduction unit 106, the heating unit 104, and the feedback unit 108.

Preferably, the glass phase coating comprises a glaze.

As shown in FIG. 1, the present application also discloses a heating rod 10 for an electronic cigarette, wherein the heating rod has a temperature control system 100 as described above.

As shown in FIG. 3, the present application also discloses an electronic cigarette system 1 characterized in that the electronic cigarette system 1 comprises a heating rod 10 of the electronic cigarette.

In a preferred embodiment, the electronic cigarette system 1 further includes an electronic cigarette case 20 for containing the heating rod 10 and charging the heating rod 10.

As shown in FIG. 4, the present application further provides a temperature control method 200 for an electronic cigarette heat generating sheet based on the temperature control system as described above, the temperature control method comprising the following steps:

S202, the feedback unit obtains feedback data converted by the thermal energy fed back by the heat conduction unit, and sends the feedback data to the processing unit, and the thermal energy is transmitted from the power supply unit to the heating unit, and then the thermal energy is transmitted to the heat conduction unit by the heating unit;

S204. The processing unit determines, according to the feedback data, a target temperature corresponding to the feedback data.

S206. The processing unit controls turning on and off of the power supply unit according to the determined target temperature.

Wherein, in the case that the target temperature is lower than 210 ° C in the temperature of the heat conduction unit, the processing unit turns on the power supply unit;

In the case where the temperature of the heat transfer unit is higher than 450 ° C, the processing unit turns off the power supply unit and prompts.

In a preferred embodiment, the temperature of the thermally conductive unit is maintained between 290 ° C and 350 ° C.

In a preferred embodiment, the temperature of the thermally conductive unit is maintained at about 300 °C.

It should be noted that each of the above modules is not necessarily a separate module, and multiple modules may be integrated into one module; or each of the above modules may be subdivided into multiple modules according to functions, which fall within the protection scope of the present application. within.

It will be understood by those skilled in the art that all or part of the processes in the above embodiments may be implemented by a computer program to instruct related hardware, and the program may be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. Wherein, the storage medium can be a magnetic disk, an optical disk, or a read-only storage memory (Read Only Memory, ROM) or random storage memory (Random Access Memory, RAM), etc.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present invention, many forms may be made without departing from the spirit and scope of the invention as claimed. In addition, although specific terms are used in the specification, these terms are merely for convenience of description and do not limit the invention.

Claims (10)

A temperature control system for an electronic cigarette heating sheet, characterized in that the temperature control system comprises a power supply unit, a heating unit, a heat conduction unit, a feedback unit, and a processing unit; among them, The power supply unit is connected to the heating unit for supplying power to the heating unit; The heating unit is in contact with one side of the heat conducting unit for conducting thermal energy to the heat conducting unit; The other side of the heat conducting unit is connected to the feedback unit, and the heat conducting unit is further configured to feed back thermal energy conducted by the heating unit to the feedback unit; The feedback unit is connected to the processing unit, configured to convert the thermal energy into feedback data, and transmit the feedback data to the processing unit; The processing unit is connected to the power supply unit, and the processing unit is configured to determine a target temperature corresponding to the feedback data according to the feedback data, and control opening and closing of the power supply unit according to the target temperature. The system according to claim 1, wherein said feedback unit comprises a thermistor, and said feedback data is a resistance value of said thermistor; The processing unit determines the target temperature according to a temperature-resistance value correspondence relationship of the pre-stored thermistor. The system of claim 1 wherein said heating unit comprises a resistance wire; said thermally conductive unit comprises a ceramic sheet. The temperature control system according to claim 1, wherein the processing unit further comprises a determining unit; the target temperature corresponds to a temperature of the heat conducting unit; and the determining unit is configured to determine whether the temperature of the heat conducting unit is at 210 ° C Within the range of ~450 °C; If the temperature of the heat conduction unit is in the range of 210 ° C ~ 450 ° C, the power supply unit is turned off; If the temperature of the heat conduction unit is lower than 210 ° C, the power supply unit is turned on; If the temperature of the heat conducting unit is higher than 450 ° C, the power supply unit is turned off and an alarm is issued. The temperature control system according to claim 4, wherein the determining unit is configured to determine whether the temperature of the heat conducting unit is in a range of 290 ° C to 350 ° C; If the temperature of the heat conduction unit is in the range of 290 ° C ~ 350 ° C, the power supply unit is turned off; If the temperature of the heat conduction unit is lower than 290 ° C, the power supply unit is turned on; If the temperature of the heat conducting unit is higher than 350 ° C, the power supply unit is turned off and an alarm is issued. The temperature control system according to claim 1, wherein said heating unit and said feedback unit are attached to said one side and said other side of said heat transfer unit, respectively. The temperature control system according to claim 1, wherein a surface of the heat conduction unit, the heating unit, and the feedback unit are provided with a glass phase coating. A heating rod for an electronic cigarette, characterized in that the heating rod incorporates a temperature control system according to any one of claims 1-7. An electronic cigarette system comprising the heating rod according to claim 8, and an electronic cigarette case for accommodating the heating rod and charging the heating rod. A temperature control method for an electronic cigarette heat generating sheet, characterized in that the method is based on the temperature control system of the electronic cigarette heat generating sheet according to any one of claims 1-7; The method includes: The feedback unit obtains feedback data converted by the thermal energy fed back by the heat conduction unit, and sends the feedback data to the processing unit, and the thermal energy is transmitted from the power supply unit to the heating unit, and then the thermal energy is transmitted to the heat conduction unit by the heating unit; The processing unit determines a target temperature corresponding to the feedback data according to the feedback data; The processing unit controls opening and closing of the power supply unit according to the determined target temperature; Wherein, in a case where the temperature of the heat conduction unit is lower than 210 ° C, the processing unit turns on the power supply unit; In the case where the temperature of the heat transfer unit is higher than 450 ° C, the processing unit turns off the power supply unit and prompts.