This application claims priority to Chinese Patent Application No. 202020984699.0, filed with the Chinese Patent Office on Jun. 02, 2020 and entitled “SUSCEPTOR FOR VAPOR-GENERATION DEVICE, AND VAPOR-GENERATION DEVICE”, which is incorporated herein by reference in its entirety.
This application claims priority to Chinese Patent Application No. 202120224124.3, filed with the Chinese Patent Office on Jan. 27, 2021 and entitled “HEATING ASSEMBLY AND AEROSOL-GENERATION DEVICE”, which is incorporated herein by reference in its entirety.
Embodiments of this application relate to the field of heat-not-burn cigarette devices of an electromagnetic induction type, and in particular, to a vapor-generation device and a susceptor for a vapor-generation device.
Tobacco products (such as cigarettes and cigars) burn tobaccos during use to produce tobacco smoke. People attempt to make products that release compounds without burning to replace these tobacco-burning products.
An example of products of this type are a heating device that releases compounds by heating materials rather than burning the materials, for example, the materials may be tobaccos or other non-tobacco products that may or may not contain nicotine. In a known device, temperature monitoring is required in a process of heating a tobacco product; The example of the products of this type is attached to a heating component through a temperature susceptor, to obtain a temperature of the heating component.
To resolve a problem of temperature monitoring of a tobacco product heating device in the related art, embodiments of this application provide a vapor-generation device of an electromagnetic induction type and a susceptor for a vapor-generation device which are convenient for manufacturing and accurate temperature detection.
This application provides a vapor-generation device, configured to heat an inhalable material to generate an aerosol, and including:
In a preferred implementation, the first metal material and/or the second metal material are constructed as elongated filaments.
In a preferred implementation, the sensing part includes:
In a preferred implementation, the second part includes a first end and a second end that are opposite each other along a length direction, where at least one part of the first part penetrates the second part through the first end and forms the lengthened portion; and
a distance from a connecting position between the first metal material and/or the second metal material and the lengthened portion to the first end along the length direction of the second part is in one third to one second of a length size of the second part.
In a preferred implementation, the lengthened portion abuts against an inner wall of the second part to conduct heat with each other.
In a preferred implementation, a radian of the lengthened portion along a circumferential direction of the second part is less than π.
In a preferred implementation, an outer diameter of at least one part of the first part exposed outside the first end decreases gradually along a direction facing away from the second part.
In a preferred implementation, the susceptor further includes a base part arranged on the second end of the second part, and the vapor-generation device provides support for the susceptor through the base part.
In a preferred implementation, both the first metal material and the second metal material are constructed as being connected to one of the first part and the second part;
or one of the first metal material and the second metal material is connected to the first part, and the other is connected to the second part.
In a preferred implementation, surfaces of the first metal material and/or the second metal material are covered by an insulating layer.
In a preferred implementation, at least one accommodation channel extending substantially along a length direction of the susceptor is arranged inside the susceptor, and a volume of a hollow part formed in the at least one accommodation channel is less than 25% of a volume of the susceptor; and
both the first metal material and the second metal material are at least partially received in the accommodation channel.
In a preferred implementation, the accommodation channel includes one hole, and the first metal material and the second metal material are simultaneously arranged in one hole;
or the accommodation channel includes two holes, and the first metal material and the second metal material are respectively arranged in one hole.
In a preferred implementation, when the accommodation channel includes two holes, a diameter of the susceptor is 2 to 2.6 mm, and diameters of the holes are 0.5 to 0.7 mm.
In a preferred implementation, the susceptor has a first end and a second end that face away from each other along the length direction; and
the accommodation channel starts from the first end of the susceptor, extends substantially toward the second end, and ends at a closed end, and the closed end is located between the first end and the second end.
In a preferred implementation, an extension length of the accommodation channel is 30% to 80% of an extension length of the susceptor.
In a preferred implementation, the susceptor includes a first heating section and a second heating section that are fixedly connected.
In a preferred implementation, a through hole is arranged on the first heating section along the length direction to form the accommodation channel.
In a preferred implementation, both the first metal material and the second metal material include a connection portion and an extending portion;
the connection portion is tightly close to a connecting position between the first heating section and the second heating section to be fixed; and the extending portion is at least partially arranged in the accommodation channel.
In a preferred implementation, a groove is arranged on an end surface on which the first heating section is connected to the second heating section, and the connection portion is fixed in the groove.
In a preferred implementation, when the connection portion is fixed in the groove, the connection portion is lower than or flush with the end surface on which the groove is located.
In a preferred implementation, the device further includes a filling body, where the filling body is filled in the groove in which the connection portion is fixed.
In a preferred implementation, the groove comes into communication with the accommodation channel.
In a preferred implementation, the volume of the hollow part formed in the at least one accommodation channel is within 20% of the volume of the susceptor.
This application further provides a susceptor for a vapor-generation device, including:
In the above susceptor for a vapor-generation device, galvanic couple materials made of different materials are arranged on the susceptor by welding or the like, so that a thermocouple that can be used for detecting a temperature of the susceptor through a thermal electromotive force is formed, which can accurately detect the temperature of the susceptor while heating an inhalable material in response to a magnetic field. The temperature detection manner of the susceptor is more convenient in manufacturing and has a more accurate temperature detection effect compared with that of a temperature sensor.
One or more embodiments are exemplarily described with reference to the corresponding figures in the accompanying drawings, and the descriptions are not to be construed as limiting the embodiments. Components in the accompanying drawings that have same reference numerals are represented as similar components, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale.
To make the foregoing objects, features and advantages of this application more comprehensible, detailed description is made to specific implementations of this application below with reference to the accompanying drawings. In the following description, many specific details are described to give a full understanding of this application. However, this application may be implemented in many other manners different from those described herein. A person skilled in the art may make similar improvements without departing from the connotation of this application. Therefore, this application is not limited to the specific implementations disclosed below.
It should be noted that, when a component is referred to as “being fixed to” another component, the component may be directly on the other component, or an intervening component may be present. When a component is considered to be “connected to” another component, the component may be directly connected to the another component, or an intervening component may also be present.
Unless otherwise defined, meanings of all technical and scientific terms used in this specification are the same as those usually understood by a person skilled in the art to which this application belongs. In this specification, terms used in the specification of this application are merely intended to describe objectives of the specific embodiments, but are not intended to limit this application. The term “and/or” used in this specification includes any and all combinations of one or more related listed items.
An embodiment of this application provides a vapor-generation device whose construction may refer to
According to the settings used in a product, the induction coil L may include a cylindrical inductor coil wound into a helical shape, as shown in
In a more preferred implementation, a frequency of the alternating current supplied by the circuit 20 to the induction coil L is in a range of 80 KHz to 400 KHz. More specifically, the frequency may be in a range of approximately 200 KHz to 300 KHz.
In a preferred embodiment, a direct current supply voltage provided by the cell 10 is in a range of approximately 2.5 V to approximately 9.0 V, and an amperage of the direct current that the cell 10 can provide is in a range of approximately 2.5 A to approximately 20 A.
In a preferred embodiment, the susceptor 30 may have a length of approximately 12 mm, a width of approximately 4 mm, and a thickness of approximately 50 µm, and may be made of stainless steel of level 430 (SS430). In an alternative embodiment, the susceptor 30 may have a length of approximately 12 mm, a width of approximately 5 mm, and a thickness of approximately 50 µm, and may be made of stainless steel of level 430 (SS430). In yet another preferred embodiment, the susceptor 30 may be constructed as a cylindrical shape; and an internal space thereof during use is for receiving the inhalable material A, and generating the aerosol for suction in a manner of heating an outer periphery of the inhalable material A. These susceptors may also be made of stainless steel of level 420 (SS420) and alloy materials containing iron and nickel (such as 1J85 permalloy).
In an embodiment shown in
In a preferred implementation, to enable a heating temperature for the inhalable material A to be accurately monitored and control components in contact with the inhalable material A during mounting to have lower heat wastes, in yet another embodiment shown in
Specifically, during implementations, the first metal material 33a and the second metal material 34a are constructed as elongated filaments or in a form of pins, and may be fixedly connected to the sensing part by welding or the like. When generating heat under penetration of a variable magnetic field, the sensing part is coupled and connected to a circuit 20 through free ends of the first metal material 33a and the second metal material 34a, so that a change of an electromotive force caused by a change of the temperature of the susceptor 30a can be detected, so as to determine the temperature of the susceptor 30a.
In an optional implementation, the first metal material 33a may be made of one of nickel, nickel-chromium alloy, nickel-silicon alloy, nickelchrome-Kao copper, constantan bronze, and ferrochrome; and the second metal material 34a may be made of another one different from that of the first metal material 33a in the above materials.
During implementations, the first metal material 33a and the second metal material 34a are isolated from the variable magnetic field, to prevent the first metal material 33a and the second metal material 34a from being heated by the magnetic field into a temperature equivalent to that of the sensing part to affect realization of a temperature detection function.
Further, according to the example shown in
In an optional implementation, the first part 31a and the second part 32a in
In yet another optional implementation, the first part 31a and the second part 32a are prepared by spraying, printing, and deposing coating layers with metal or alloy sensing materials on surfaces of rigid substrates such as ceramic and heat-resistant plastic.
Further, according to
Meanwhile, in the preferred embodiment shown in
In the preferred embodiment shown in
In the preferred embodiment shown in
According to the preferred embodiment shown in
Based on the preferred implementation shown in
Further, during implementations, to prevent the second part 32a with a metal material from interfering with detection, an insulating layer covering the first metal material 33a and the second metal material 34a is formed on surfaces of the first metal material 33a and the second metal material 34a in a manner of deposition, electroplating, spraying, surface oxidation, and the like, so as to be insulated from the second part 32a and other parts of the susceptor 30a.
Alternatively, in yet another optional implementation shown in
Alternatively, in another optional implementation, the first metal material 33b and the second metal material 34b are connected to a same position point or a same part of the susceptor 30b by welding or the like.
In yet another optional implementation shown in
A first metal material 33c and a second metal material 34c penetrate from the inside of the second part 32c to the outside of the base part 35c, so as to be connected to the circuit 30.
Alternatively, in yet another variant implementation different from that shown in
Meanwhile, the base part 35c is prepared by a thermally insulating PEEK material or zirconia ceramic with low thermal conductivity, which can effectively prevent heat of the susceptor 30c from being transferred to a tubular support 50 or other components.
In the above susceptor for a vapor-generation device, galvanic couple materials made of different materials are arranged on the susceptor by welding or the like, so that a thermocouple that can be used for detecting a temperature of the susceptor through a thermal electromotive force is formed, which can accurately detect the temperature of the susceptor while heating an inhalable material in response to a magnetic field. The temperature detection manner of the susceptor is more convenient in manufacturing and has a more accurate temperature detection effect compared with that of a temperature sensor.
Based on the above Embodiment 1, this application provides the following specific embodiment, which specifically provides a specific structure of a heating body or a heating assembly and an example thereof. Specifically, the vapor-generation device described in the above Embodiment 1 is specifically an aerosol-generation device in this embodiment of this application, the susceptor 30 described in the above Embodiment 1 is specifically a heating body 1 or a heating assembly 30 in this embodiment of this application, and the metal materials (including the first metal material 33a and the second metal material 34a) described in the above Embodiment 1 are specifically thermocouple wires (a first thermocouple wire 203 and a second thermocouple wire 204) in this embodiment of this application. Specifically,
as shown in
As shown in
For the heating body 1 of a same material (a same specific heat capacity), a heat storage capacity is proportional to the volume of the entity. A larger accommodation channel 4 indicates a smaller volume of the entity of the heating body 1, resulting in a poorer heat storage capacity. During use of the aerosol-generation device, cold air first passes through an end (the first end) of the heating body 1, and then passes through an other end (the second end) of the heating body 1. The cold air continuously absorbs heat of the heating body 1 in a process from the first end of the heating body 1 to the second end. That is because when the air is at the first end, a temperature difference between the air and the first end of the heating body 1 is large so that more heat is absorbed, and when the air is at the second end, the air has absorbed a lot of heat in the process of flowing and the air temperature is high so that the air absorbs less heat at the second end. The heat absorbed by the air at the first end and the second end in the process of flowing is different. An accommodation channel of the existing heater body is large, a volume of an entity thereof is small, and the energy storage thereof is poor. Therefore, when heat lost at the first end is more than that at the second end, a temperature of the first end is low, while a temperature of the second end is high, so that a temperature of the entire heating body 1 is uneven. In this application, the volume of the accommodation channel 4 is controlled to be within 25% of the volume of the heating body 1, and the volume of the entity of the heating body 1 is large, thereby having a good heat storage capacity. Therefore, when the heat lost at the first end is more than that at the second end, the temperature of the first end does not fluctuate too much, so that the temperature of the first end is relatively close to the temperature of the second end, and the temperature of the entire heating needle is more even.
The temperature sensing unit 2 includes a first thermocouple wire 203 and a second thermocouple wire 204, and the first thermocouple wire 203 and the second thermocouple wire 204 are at least partially arranged in the accommodation channel.
There are at least two arrangement manners for the accommodation channel described below, which are only listed herein. This application is not limited to these two manners.
First manner (
Second manner (
The accommodation channel 4 starts from the first end 105 of the heating body, extends substantially toward the second end 106, and ends at a closed end, and the closed end is located between the first end 105 and the second end 106. An extension length of the accommodation channel 4 is 30% to 80% of an extension length of the heating body. Preferably, the extension length of the accommodation channel is 50% to 70% of the extension length of the heating body.
When the length of the heating body is 20 mm, the diameter of the heating body 1 is 2 mm, the accommodation channel 4 includes two holes, diameters of the holes are 0.7 mm, and depths of the holes are 14.4 mm, the volume of the hollow part formed in the accommodation channel is 18.9% of the volume of the heating body.
When the length of the heating body is 20 mm, the diameter of the heating body 1 is 2.3 mm, the accommodation channel 4 includes two holes, diameters of the holes are 0.55 mm, and depths of the holes are 12 mm, the volume of the hollow part formed in the accommodation channel is 7.4% of the volume of the heating body.
When the length of the heating body is 10 mm, the diameter of the heating body 1 is 2.6 mm, the accommodation channel 4 includes two holes, diameters of the holes are 0.5 mm, and depths of the holes are 3.4 mm, the volume of the hollow part formed in the accommodation channel is 2.9% of the volume of the heating body.
Preferably, the volume of the hollow part formed in the accommodation channel is within 20% of the volume of the heating body.
The heating body 1 is divided into a first heating section 101 and a second heating section 102 (shown in
A through hole is arranged on the first heating section 101 along the length direction to form the accommodation channel 4 (shown in
There are at least three arrangement manners for the groove 5, which are only listed herein. This application is not limited to three manners described below.
First manner (
Second manner (
Third manner: the groove 5 is arranged on the first heating section 101 and the second heating section 102, and the groove 5 is arranged on the end surface on which the first heating section 101 is connected to the second heating section 102.
In the related art, a blind hole is opened inside the heating body 1, then the temperature sensing unit 2 is inserted into the blind hole, and the temperature sensing unit 2 and the heating body 1 are not fixed, so that the contact between the temperature sensing unit 2 and the heating body 1 is unstable and the measured temperature is inaccurate. In this application, the connection portion 201 is fixedly connected to the heating body 1, so that the contact between the temperature sensing unit 2 and the heating body 1 is stable and reliable, and the measured temperature is more accurate.
When the connection portion 201 is fixed in the groove 5, the connection portion 20 is lower than or flush with the end surface on which the groove 5 is located, so that the first heating section 101 can be connected to the second heating section 102. When the connection portion 201 is fixed in the groove 5, there may also be a gap in the groove 5. In this case, a filling body 3 is used to fill the groove 5 (
The heating body 1 has at least two types, which are only listed herein. This application is not limited to two manners described below.
First manner (shown in
Second manner (
Both the first heating section 101 and the second heating section 102 generate heat. Compared with a situation in which only the first heating section 101 generates heat and the second heating section 102 does not generate heat, the connection portion 201 is fixed on the end surface on which the first heating section 101 is connected to the second heating section 102, so that the temperature detected by the temperature sensing unit 2 is more accurate.
The heating assembly further includes a base 6, the base 6 is arranged on an end of the first heating section 101 away from the second heating section 102, and the arrangement of the base 6 is convenient for fixing the heating body 1 in the aerosol-generation device.
Ends of the first heating section 101 and the second heating section 102 that are close to each other are chamfered during processing, and there may be a circle of connecting grooves (not shown in the figure) after the first heating section 101 and the second heating section 102 are fixedly connected. To prevent the connection grooves from collecting dirt, the connection grooves may be filled with nickel wires to keep an outer surface of the heating body 1 smooth.
To study an influence of a proportion of the volume of the accommodation channel 4 to the volume of the heating body 1 on the heating body 1, the applicant has done the following set of experiments:
Sample A: the diameter of the heating body 1 is 2.3 mm, the first heating section 101 is 12.3 mm long and is solid, the second heating section 102 is 6 mm long, two through holes form the accommodation channel 4, diameters of the through holes are 0.55 mm, the volume of the accommodation channel 4 is 8.3% of the volume of the heating body 1 (where the volume of the accommodation channel 4 is not subtracted when the volume of the heating body 1 is calculated), a groove 5 is arranged on an end of the first heating section 101 close to the second heating section 102, and both a width and a depth of the groove 5 are 0.4 mm. The first thermocouple wire 203 and the second thermocouple wire 204 with the insulating layer removed at both ends pass through the two through holes respectively, and then are welded in the groove 5. Then, the first heating section 101 and the second heating section 102 are welded. On an outer surface of the heating body 1, starting from an end of the second heating section 102 away from the first heating section 101, in the length direction, one thermocouple is welded every 2 mm, and a total of 5 thermocouples are welded (where a first thermocouple is welded at 3 mm from an end surface).
Sample B: the sample B and the sample A have same other arrangements, a difference therebetween is that one through hole forms the accommodation channel 4, and a diameter of the through hole is 1.6 mm (where the volume of the accommodation channel 4 accounts for 35% of the volume of the heating body 1).
The sample A and the sample B are put in an alternating magnetic field, the sample A and the sample B generate heat, and temperatures detected by the five thermocouples of the sample A and the sample B are recorded respectively. The temperatures recorded by the sample A are shown in
The foregoing descriptions are merely preferred embodiments of this application, but are not intended to limit this application. Any modification, equivalent replacement, or improvement made within the spirit and principle of this application shall fall within the protection scope of this application.
It should be noted that, the specification of this application and the accompanying drawings provide the preferred embodiments of this application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, improvements or transformations can be made based on the above descriptions, and all these improvements and transformations shall fall within the protection scope of the appended claims of this application.
Number | Date | Country | Kind |
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202020984699.0 | Jun 2020 | CN | national |
202120224124.3 | Jan 2021 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2021/097995 | 6/2/2021 | WO |