WO2023024810A1

WO2023024810A1 - Heater, and heating and atomization apparatus

Info

Publication number: WO2023024810A1
Application number: PCT/CN2022/108261
Authority: WO
Inventors: 刘滔文; 李日红; 周宏明
Original assignee: 深圳麦克韦尔科技有限公司
Priority date: 2021-08-23
Filing date: 2022-07-27
Publication date: 2023-03-02
Also published as: CN113647697A

Abstract

A heater (11). The heater (11) is provided with an accommodating cavity (110) for accommodating an atomization medium carrier (20), and comprises: a magnetic field generation unit (200), which is arranged in the heater (11) and is used for generating an alternating magnetic field; a first sensing unit (300), which is at least partially accommodated in the accommodating cavity (110), wherein the first sensing unit (300) can be arranged in the atomization medium carrier (20) in a penetrating manner and generates heat by means of the alternating magnetic field; and a second sensing unit (400), which is located in the accommodating cavity (110) and is arranged surrounding the first sensing unit (300), wherein the second sensing unit (400) can surround the atomization medium carrier (20) and generates heat by means of the alternating magnetic field.

Description

Heater and heating atomization device

technical field

The invention relates to the technical field of heating atomization, in particular to a heater and a heating atomization device including the heater.

Background technique

The heater is used to atomize the atomized medium carrier by means of heating without burning, so as to form an aerosol that can be inhaled by the user, so that the content of harmful substances in the aerosol can be reduced. However, for traditional heaters, there are usually defects that the atomization speed and atomization utilization rate of the atomization medium carrier are too low.

Contents of the invention

A technical problem solved by the invention is how to improve the atomization speed and atomization utilization rate of the atomization medium carrier by the heater.

A heater, which is provided with an accommodating cavity for accommodating an atomized medium carrier and includes:

a magnetic field generating unit, arranged in the heater and used to generate an alternating magnetic field;

The first induction unit is at least partly accommodated in the accommodating cavity, the first induction unit can be penetrated in the atomized medium carrier and generate heat through the alternating magnetic field; and

The second induction unit is located in the accommodating cavity and arranged around the first induction unit, the second induction unit can surround the atomized medium carrier and generate heat through the alternating magnetic field.

A heating atomization device includes a power supply and the above-mentioned heater, the power supply is connected to the heater and supplies power to the heater.

The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the invention will be apparent from the description, drawings and claims.

Description of drawings

In order to better describe and illustrate embodiments and/or examples of the inventions disclosed herein, reference may be made to one or more of the accompanying drawings. Additional details or examples used to describe the drawings should not be considered limitations on the scope of any of the disclosed inventions, the presently described embodiments and/or examples, and the best mode of these inventions currently understood.

Fig. 1 is a schematic cross-sectional structure diagram of a heating atomization device provided by an embodiment;

Fig. 2 is a planar cross-sectional structural schematic diagram of an atomized medium carrier;

Fig. 3 is a schematic cross-sectional structural view of the heating atomization device shown in Fig. 1 when the atomization medium carrier is accommodated;

Fig. 4 is a partial cross-sectional structural schematic diagram of the heating atomization device shown in Fig. 1;

Fig. 5 is a schematic cross-sectional structure diagram of the first induction unit in the first example of the heating atomization device shown in Fig. 1;

Fig. 6 is a schematic perspective view of the three-dimensional structure of the first induction unit in the second example of the heating atomization device shown in Fig. 1;

Fig. 7 is a schematic cross-sectional structural view of the second induction unit in the heating atomization device shown in Fig. 1;

Fig. 8 is a schematic diagram of the relative positional relationship between the first induction unit and the second induction unit in the heating atomization device shown in Fig. 1;

FIG. 9 is a graph showing temperature and time changes of the first induction unit and the second induction unit in the heating atomization device of FIG. 1 .

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and similar expressions are used herein for the purpose of description only and do not represent the only embodiment.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , an electronic atomization device provided by an embodiment of the present invention includes a heater 11 and a power supply 12 , the heater 11 and the power supply 12 are connected, and the two can be integrally connected or detachably connected. The power supply 12 includes a battery 12a and a control chip 12b electrically connected, and the battery 12a may be a lithium battery. The control chip 12b is used to control the power supply of the battery 12a to the heater 11, for example, it can control the battery 12a to stop or continue to supply power to the heater 11, and can also control the power of the battery 12a to the heater 11.

The heater 11 is used to heat and atomize the atomizing medium 22a in the atomizing medium carrier 20 to form an aerosol. The atomizing medium carrier 20 can be roughly cylindrical, and the atomizing medium carrier 20 can include interconnected suction nozzle segments 21 and the atomizing section 22, when the user inhales in the nozzle section 21, the aerosol formed by the atomization of the atomizing medium 22a can be absorbed by the user. The nozzle section 21 is air-permeable, and the atomizing section 22 includes an atomizing medium 22a and a wrapping layer 22b. The wrapping layer 22b may be a non-breathable structure, and the atomizing medium 22a is wrapped in the wrapping layer 22b. The suction nozzle section 21 is provided with an air intake hole 21a. When the user sucks, the outside air entering the air intake hole 21a directly enters the suction nozzle section 21, and the atomized particles generated in the atomization section 22 are sucked into the suction nozzle. Section 21, so that the outside air in the nozzle section 21 mixes with the atomized particles to form an aerosol and be absorbed by the user.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , in some embodiments, the heater 11 includes a housing assembly 100 , a magnetic field generating unit 200 , a first induction unit 300 , a second induction unit 400 , a carrying unit 500 and a thermal insulation 600 The housing assembly 100 is used as a carrier, so that the magnetic field generating unit 200 , the first induction unit 300 , the second induction unit 400 , the carrying unit 500 and the heat insulating member 600 are all disposed on the housing assembly 100 .

In some embodiments, the housing assembly 100 is provided with an accommodating cavity 110, which is actually an open cavity, and the accommodating cavity 110 is formed with an opening 111a on the outer surface of the housing assembly 100. Obviously, The opening 111a directly communicates with the outside world. The accommodating cavity 110 can be divided into two sections, that is, the accommodating cavity 110 includes a first accommodating section 111 and a second accommodating section 112 that communicate with each other, and the opening 111a is located on the first accommodating section 111, so that the first accommodating section The segment 111 is located above the second accommodating segment 112 . The caliber of the first accommodating section 111 is non-uniformly arranged. For example, the caliber of the first accommodating section 111 can gradually decrease along the direction away from the opening 111a, that is, from top to bottom, so that the first accommodating section 111 is approximately A cone-shaped structure with a large top and a small bottom. The caliber of the second accommodation section 112 can be set uniformly so that the second accommodating section 112 has a columnar structure, and the caliber of the second accommodating section 112 can be smaller than that of the first accommodating section 111 .

The diameter of the atomized medium carrier 20 may be approximately equal to the diameter of the second accommodation section 112. When the atomized medium 22a is accommodated in the accommodation chamber 110 through the opening 111a, the atomization section 22 is matched with the second accommodation section 112. , there is no gap between the atomizing section 22 and the inner wall surface 113 of the second accommodating section 112 , in other words, the atomizing section 22 and the second accommodating section 112 form a tight fit relationship to a certain extent. A part of the suction nozzle section 21 is located outside the first accommodation section 111 for the user to suck, the other part of the suction nozzle section 21 is accommodated in the first accommodation section 111, and the air inlet 21a is located in the first accommodation section 111, There is an air intake gap 111b of a certain width between the suction nozzle section 21 and the inner side wall surface 113 of the first accommodating section 111. Obviously, the air intake gap 111b directly communicates with the outside world through the opening 111a, and the air intake hole 21a is connected to the air intake gap. 111b are interconnected.

When the user sucks on the nozzle section 21, the outside air enters into the nozzle section 21 through the open opening 111a, the air intake gap 111b and the air inlet hole 21a in turn, and the mist produced by the atomization medium 22a in the atomization section 22 The atomized particles are sucked into the nozzle section 21, so that the outside air in the nozzle section 21 mixes with the atomized particles to form an aerosol and is absorbed by the user. The direction indicated by the dotted arrow in FIG. 3 is the flow direction of the gas. Therefore, when the atomization medium 22a in the atomization section 22 is in the process of atomization, it is difficult for external air to enter the atomization section 22, so that the atomization medium 22a is in a low-oxygen (poor oxygen) baking environment, so that on the one hand it can Harmful substances or odorous substances resulting from the reaction of the atomizing medium 22a with oxygen are eliminated, thereby improving the safety of the heater 11 in use. On the other hand, the composition and concentration of the aerosol can also be changed to a certain extent, so that the atomized medium carrier 20 has a more fragrant and pure inhalation taste.

In some embodiments, the magnetic field generating unit 200 is disposed in the casing assembly 100, and the magnetic field generating unit 200 is located outside the accommodating cavity 110 and is arranged around the accommodating cavity 110. The magnetic field generating unit 200 may be a coil, and the coil and the power supply The battery 12a inside 12 is electrically connected, and the battery 12a supplies power to the coil, so that the coil generates an alternating magnetic field whose strength varies with time.

In some embodiments, the carrying unit 500 may be substantially in the shape of a disc, and the carrying unit 500 may be accommodated in the second accommodating section 112 of the accommodating cavity 110, and the carrying unit 500 abuts against the inner side of the second accommodating section 112 at the same time. The wall surface 113 and the inner bottom wall surface. When the atomized medium carrier 20 is accommodated in the accommodating cavity 110, the lower end of the atomized medium carrier 20 can abut against the carrying unit 500, thereby limiting the position of the atomized medium carrier 20 relative to the accommodating cavity 110 effect.

Referring to FIG. 3 , FIG. 5 and FIG. 6 , in some embodiments, from the perspective of composition structure, the first induction unit 300 includes a support member 310 and a heating member 320 , and the support member 310 can be inserted in the carrying unit 500 to generate heat The component 320 is disposed on the supporting component 310 , and the heating component 320 can be entirely located in the second accommodating section 112 . The supporting member 310 may be made of weakly magnetically permeable materials such as metal or non-metallic materials, for example, the supporting member 310 may be made of one or more of aluminum, copper, glass, ceramic or stainless steel. The heating element 320 is made of a strong magnetic material. For example, the heating element 320 can be made of one or more of stainless steel, nickel and nickel-based alloys, or iron and iron-based alloy materials, so that the heating element 320 is in the magnetic field generating unit. 200 generates heat under the action of the alternating magnetic field. Specifically, the alternating magnetic field will form a large amount of eddy current in the heating element 320 , and the eddy current will have a thermal effect and cause the heating element 320 to generate heat. The Curie temperature of the heating element 320 may be 250°C to 350°C, for example, 260°C to 290°C. When the temperature of the heating element 320 reached the Curie temperature, the magnetism of the heating element 320 disappeared and could not continue to generate heat. When the temperature of the heating element 320 was lower than the Curie temperature, the magnetic recovery of the heating element 320 generated heat, so that If the temperature of the heating element 320 is too high, then the heating temperature of the heating element 320 during normal operation can be controlled to be less than or equal to its own Curie temperature.

Referring to FIG. 3 and FIG. 5 , the first sensing unit 300 may be a columnar structure, such as a prism or columnar structure. The cross-sectional dimension of the first sensing unit 300 is 1.5 mm to 2.5 mm, for example, 1.8 mm to 2 mm. When the first sensing unit 300 is a cylindrical structure, the cross-sectional dimension is actually the diameter of the first sensing unit 300 . The support 310 is a columnar structure, the heating element 320 is a cylindrical structure, the heating element 320 is set on the support 310, the thickness A of the heating element 320 is its own wall thickness, when the heating element 320 is a cylindrical structure, heat The thickness A of member 320 is half the difference between its outer diameter and inner diameter. The thickness A of the heating element 320 is 10 μm to 150 μm, for example, 12 μm to 50 μm. The length of the heating element 320 along its axial direction is 8 mm to 15 mm, for example, 10 mm to 12 mm, and the length of the heating element 320 may be shorter than the length of the supporting element 310 .

3 and 6, the first induction unit 300 can be a sheet structure, so that both the support member 310 and the heating element 320 are sheet structures, and for the two surfaces in the thickness direction of the support member 310, the heating element 320 can be directly attached to at least one of the two surfaces. The width of the first induction unit 300 may be 3 mm to 6 mm, for example, 4 mm to 5 mm, and the widths of the supporting element 310 and the heating element 320 may be equal. The thickness of the first sensing unit 300 may be 0.3 mm to 0.55 mm, for example, 0.4 mm to 0.5 mm. Apparently, the thickness of the first sensing unit 300 is the sum of the thicknesses of the supporting member 310 and the heating member 320 . The thickness of the heating element 320 may be 10 μm to 150 μm, for example, 12 μm to 50 μm.

When the atomized medium carrier 20 is accommodated in the accommodating cavity 110, the first induction unit 300 is inserted in the atomizing section 22 of the atomized medium carrier 20, and the central axis of the first induction unit 300 can be aligned with the atomized medium carrier 20. The central axes of the two coincide, so that the atomizing medium 22a in the atomizing section 22 covers the heating element, that is, the heating element 320 is in direct contact with the atomizing medium 22a. When the heating element 320 generates heat under the action of the alternating magnetic field, the heat is transferred from the central area of the atomizing section 22 to the edge area, thereby heating the atomizing medium 22a located in the central area and the edge area of the atomizing section 22. change. Therefore, the heating mode of the first induction unit 300 to the atomized medium carrier 20 is a central heating mode.

The first induction unit 300 may further include a ceramic layer or a glass glaze layer, and the ceramic layer or glass glaze layer covers the surface of the heating element 320 . In this way, on the one hand, the ceramic layer or the glass glaze layer forms a protective effect on the heating element 320, preventing external impact from causing damage to the heating element 320, and at the same time preventing external liquid droplets and dust from adhering to the heating element 320 to form corrosion, thereby The service life of the heating element 320 is improved. On the other hand, the ceramic layer or glass glaze layer has a relatively small friction coefficient, which can reduce the friction between the first induction unit 300 and the atomized medium carrier 20 when the first induction unit 300 is inserted into the atomized medium carrier 20. Frictional resistance, avoiding the bending of the first induction unit 300 under the action of large frictional resistance, ensuring that the first induction unit 300 is smoothly inserted into the atomization medium carrier 20; at the same time, it can prevent the atomization medium 22a from being generated during the atomization process The solidified substance adheres to the ceramic layer or the glass glaze layer to prevent the solidified substance from producing particles or gases that affect the user's inhalation taste during the heating process.

Referring to Fig. 1, Fig. 5 and Fig. 6, from the point of view of the connection position, the first sensing unit 300 includes a base section 330 and a spike section 340, the base section 330 may further include a support member 310 and a heating element 320, and the spike section 340 The supporting element 310 and the heating element 320 may also be included. The spiked section 340 is located above the base section 330 , so that the spiked section 340 is closer to the opening 111 a of the accommodating cavity 110 than the base section 330 . The cross-sectional size of the base section 330 can be kept constant and evenly arranged, and the cross-sectional size of the spiked section 340 is changed rather than uniformly arranged. From the base section 330 to the direction of the spiked section 340, that is, from the bottom to the top, the pointed The cross-sectional dimension of the spiked section 340 may gradually decrease such that the spiked section 340 has a substantially conical shape. By setting the spike section 340, the fitting resistance of the first induction unit 300 inserted into the atomized medium carrier 20 can be reduced, avoiding the bending of the first induction unit 300 due to excessive resistance, and also improving the contact between the first induction unit 300 and the mist. The mating speed of the atomization medium carrier 20 ensures that the atomization medium carrier 20 is smoothly inserted into the accommodating cavity 110 , thereby improving the convenience of use of the heater 11 .

Referring to FIG. 1 , FIG. 4 and FIG. 7 , in some embodiments, the second sensing unit 400 may be a cylindrical structure, and the second sensing unit 400 is accommodated in the accommodating cavity 110 and arranged around the first sensing unit 300 . When the atomized medium carrier 20 is accommodated in the accommodating cavity 110 , the second induction unit 400 can be in contact with the atomized medium carrier 20 and sleeved on the atomized medium carrier 20 . The second induction unit 400 can be made of strong magnetically permeable material, such as one or more of ferrite, nickel-based alloy or iron-based alloy, similar to the heating element 320 in the first induction unit 300 , under the action of the alternating magnetic field generated by the magnetic field generating unit 200 , a large amount of eddy current is formed in the second induction unit 400 to generate heat. The Curie temperature of the second induction unit 400 is 150°C to 220°C, for example, 180°C to 220°C. Since the Curie temperature of the heating element 320 is 250°C to 350°C, the Curie temperature of the second induction unit 400 is less than The Curie temperature of the first induction temperature can make the heating temperature formed by the first induction unit 300 higher than the heating temperature formed by the second induction unit 400 during the working process. The thickness L of the second sensing unit 400 is 0.015 mm to 0.3 mm, for example, the thickness L is 0.1 mm to 0.2 mm. The thickness L is actually the wall thickness of the cylindrical second sensing unit 400 . The axial length of the second sensing unit 400 may be 0.8 mm to 2.5 mm, for example, 1 mm to 1.5 mm.

Referring to FIG. 1 and FIG. 3 , when the atomized medium carrier 20 is accommodated in the accommodating cavity 110 , the second induction unit 400 can be sleeved on the atomization section 22 so that the second induction unit 400 is in direct contact with the atomization section 22 , the central axis of the second induction unit 400 may coincide with the central axis of the atomized medium carrier 20 . When the second induction unit 400 generates heat under the action of the alternating magnetic field, the heat is transferred from the edge area of the atomization section 22 to the central area, thereby the atomization medium 22a located in the central area and the edge area of the atomization section 22 is heated. Heated atomization. Therefore, the heating mode of the atomized medium carrier 20 by the second induction unit 400 is an edge heating mode.

Referring to Fig. 3 and Fig. 4, in some embodiments, the heat insulating element 600 can have an annular structure, and the heat insulating element 600 is arranged on the inner wall surface 113 of the accommodating cavity 110, and the number of the heat insulating element 600 can be two, two The heat insulating elements 600 are arranged at intervals along the axial direction of the accommodating cavity 110 (that is, the up and down direction). The thermal element 600 is connected. The thermal insulator 600 has a low heat transfer coefficient, which can effectively prevent the heat generated by the second induction unit 400 from being transferred to the outside through the housing assembly 100 to cause heat loss, and improve the energy utilization rate of the second induction unit 400 . At the same time, the middle part of the second induction unit 400 is not in direct contact with the inner wall surface 113 of the accommodating cavity 110, so that a space 420 is formed between the two, which can also reduce the transmission of the second induction unit 400 to the housing assembly 100. heat, to further prevent heat loss and improve the energy utilization rate of the second induction unit 400 . The upper end of the spacing gap 420 is one end close to the opening 111a, and the lower end of the spacing gap 420 is the other end away from the opening 111a. Obviously, the upper end of the spacing gap 420 is closer to the opening 111a than its lower end. Along the direction from the upper end of the gap 420 to the lower end, that is, from top to bottom, the width M of the gap 420 first increases or decreases, so that the longitudinal section of the gap 420 is roughly C-shaped. In this way, the distance between the middle part of the second induction unit 400 and the inner wall surface 113 of the accommodating cavity 110 can be increased reasonably, thereby reducing the heat loss of the second induction unit 400 and improving energy efficiency.

Meanwhile, the upper and lower edges of the second sensing unit 400 extend smoothly toward each other, and the second sensing unit 400 protrudes from the inner wall surface 113 of the receiving cavity 110 toward the central axis of the receiving cavity 110 . Along the direction from the upper edge of the second sensing unit 400 to its lower edge, the distance from the second sensing unit 400 to the central axis of the accommodating cavity 110 first decreases and then increases, so that the longitudinal section of the second sensing unit 400 is roughly C-shaped. . When the atomized medium carrier 20 is accommodated in the accommodating chamber 110, the second induction unit 400 accommodates and squeezes the atomized medium carrier 20 to improve the stability of the atomized medium carrier 20, and at the same time the second induction unit 400 directly contacts the mist Optimizing the medium carrier 20 can improve the heat transfer speed and heat utilization rate of the second induction unit 400 .

In some embodiments, referring to FIG. 3 and FIG. 4 , the heater may further include a temperature sensing unit 700 . Perform timely testing. Specifically, the temperature sensing unit 70 is disposed on the side of the second sensing unit 400 facing away from the atomized medium carrier 20 , for example, the temperature sensing unit 70 is disposed in the aforementioned gap 420 .

The length of the second induction unit 400 can be shorter than the length of the heating element 320 on the first induction unit 300, so that the second induction unit 400 covers part of the heating element 320 in the front projection of the first induction unit 300, so that the cylindrical second The electromagnetic shielding effect of the induction unit 400 on the heating element 320 ensures that both the first induction unit 300 and the second induction unit 400 can generate heat at the same time, so that the atomizing medium carrier 20 can form a central heating mode and an edge heating mode at the same time.

1 and 8, when the first sensing unit 300 has a sharp section 340, the upper end of the sharp section 340 is closer to the opening 111a of the accommodating chamber 110 than the lower end, and the upper end of the sharp section 340 is recorded as the second 341 at one end. The upper end of the second sensing unit 400 is closer to the opening 111 a of the accommodating chamber 110 than the lower end thereof, and the upper end of the second sensing unit 400 is denoted as the second end 410 . The second end 410 is closer to the open opening 111a than the first end 341, so that the first end 341 and the second end 410 are arranged at intervals along the axial direction of the accommodating cavity 110 to form a certain distance H, and the value of the distance H is 0.5mm to 2mm. In view of the relatively low heating temperature of the first end 341 of the spike section 340 , the heating temperature can be compensated by the operation of the second induction unit 400 , so as to ensure that the atomizing medium 22 a in the entire atomizing section 22 is evenly heated.

Referring to Fig. 3 and Fig. 9, when using the heating atomization device 10 to heat and atomize the atomization medium carrier 20, the atomization medium carrier 20 can be inserted in the accommodating cavity 110, so that the first induction unit 300 can be inserted It is placed in the atomizing section 22 , and the second sensing unit 400 is sleeved on the atomizing section 22 . When the user sucks on the nozzle section 21, the battery 12a supplies power to the magnetic field generating unit 200 to generate an alternating magnetic field, so that the first induction unit 300 and the second induction unit 400 generate heat simultaneously under the action of the alternating magnetic field to ensure atomization The media carrier 20 is capable of forming a center heating mode and an edge heating mode at the same time. During operation, the temperature of the first induction unit 300 shows a linear and continuous rising change law between the zero time and the t ₁ time, so that the temperature of the first induction unit 300 can be raised to the heating temperature T ₁ at the t ₁ time, and in the subsequent time period Keep the heating temperature _T1 constant. The temperature of the second induction unit 400 shows a linear and continuous rising change law between the zero time and the time _t1 , so that the temperature of the second induction unit 400 can be raised to the heating temperature _T2 at the same time _t1 , and maintained in the subsequent period of time. The heating temperature T ₂ is constant, and the heating temperature T ₁ is greater than the heating temperature T ₂ . Therefore, the heat mainly comes from the first induction unit 300 , thereby forming a working mode in which the first induction unit 300 is mainly heated and the second induction unit 400 is auxiliary.

If the heater 11 only has the first induction unit 300 and only forms a central heating mode, when the first induction unit 300 is working, the heat can only be transferred from the central area of the atomizing section 22 to the edge area in one direction, in view of the heat transfer process The atomization medium 22a in the center area of the atomization section 22 is heated up faster than the atomization medium 22a in the edge area, that is, the atomization medium 22a in the center area reaches the atomization temperature earlier than the atomization medium 22a in the edge area change. In order to increase the atomization speed so that all the atomization media 22a in the atomization section 22 reach the atomization temperature at the same time within a set short time, it is necessary to increase the heating temperature of the first induction unit 300. At this time, because the atomization media 22a Due to the restriction of the heat transfer coefficient, the heat in the central area of the atomization section 22 cannot be quickly transferred to the edge area in a short time, causing the atomization medium 22a in the central area to coke due to local overheating, thereby causing harmful substances and odor substances. Lead to affect the user's pumping experience. At the same time, the edge area may have a local low temperature lower than the atomization temperature due to insufficient heat absorption, so that part of the atomization medium 22a in the edge area cannot be completely atomized, thereby affecting the utilization rate of the atomization medium 22a and the entire atomization medium carrier 20 . Similarly, if the heater 11 only has the second induction unit 400 and only forms an edge heating mode, the heat can only be transferred from the edge area of the atomization section 22 to the center area in one direction, and in order to increase the atomization speed, it will inevitably lead to The atomized medium 22a in the area produces coking phenomenon, which also affects the user's suction experience. Moreover, the atomizing medium 22a in the central area cannot be completely atomized, which affects the utilization rate of the atomizing medium 22a.

Referring to Fig. 3, for the heater 11 in the above-mentioned embodiment, the first induction unit 300 and the second induction unit 400 work simultaneously to form a center heating mode and an edge heating mode, so that the mist in the center area and the edge area of the atomization section 22 All of the heating medium 22a can be in contact with the heat source, and the heat can be transferred from the central area to the edge area, and can also be transferred from the edge area to the central area, so that the heat can be transferred in both directions, thereby greatly reducing the time difference in the heat transfer process and ensuring the mist All the atomizing media 22a in the atomizing section 22 can simultaneously reach the atomizing temperature in a short time, thereby increasing the atomizing speed of the atomizing media 22a. At the same time, on the basis of ensuring a high atomization speed, not only does it not need to increase the heating temperature of the first induction unit 300 and the second induction unit 400 too much, but also can properly reduce the heating temperature of the first induction unit 300 and the second induction unit 400. The heating temperature prevents the atomizing medium 22a from coking at an excessively high temperature, thereby improving user experience. Moreover, the atomizing medium 22a in the atomizing section 22 is evenly heated, ensuring that the atomizing medium 22a in the central area and the edge area reaches the atomizing temperature at the same time and is completely atomized, and finally improves the atomizing medium 22a and the entire atomizing medium carrier 20. utilization rate.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims

A heater, characterized in that it is provided with an accommodating chamber for accommodating an atomized medium carrier and includes:

a magnetic field generating unit, arranged in the heater and used to generate an alternating magnetic field;

The first induction unit is at least partly accommodated in the accommodating cavity, the first induction unit can be penetrated in the atomized medium carrier and generate heat through the alternating magnetic field; and

The second induction unit is located in the accommodating cavity and arranged around the first induction unit, the second induction unit can surround the atomized medium carrier and generate heat through the alternating magnetic field.
The heater according to claim 1, further comprising a temperature sensing unit, the temperature sensing unit is disposed in the accommodating cavity and used for detecting the temperature of the second sensing unit.
The heater according to claim 2, wherein the temperature sensing unit is arranged on a side of the second sensing unit away from the atomized medium carrier.
The heater according to claim 3, characterized in that, the cross-section of the second induction unit is roughly C-shaped, and two opposite edges of the second induction unit are connected to the inner wall surface of the accommodating cavity, so There is a gap between the second sensing unit and the inner wall surface of the accommodating cavity, and the temperature sensing unit is arranged in the gap.
The heater according to claim 4, wherein the second induction unit extends smoothly from the two edges toward each other.
The heater according to claim 5, wherein the second induction unit protrudes from the inner wall surface of the accommodating cavity, and is used for accommodating and squeezing the atomized medium carrier.
The heater according to claim 4, further comprising a heat insulating element disposed on an inner side wall of the accommodating cavity, and two edges of the second induction unit are respectively connected to the heat insulating element.
The heater according to claim 1, wherein the second induction unit is a cylindrical structure, the thickness of the second induction unit is 0.015mm to 0.3mm and the length is 0.8mm to 2.5mm.
The heater according to claim 1, wherein the heating temperature of the first induction unit is higher than the heating temperature of the second induction unit.
The heater according to claim 1, characterized in that, the first induction unit continues to rise to the heating temperature and keeps the heating temperature constant, and the second induction unit continues to rise to the heating temperature and keeps the heating temperature constant.
The heater according to claim 10, characterized in that, during the process of simultaneous temperature rise, the heating temperature of the first induction unit and the heating temperature of the second induction unit reach at the same time.
The heater according to claim 1, wherein the Curie temperature of the first induction unit is 250°C to 350°C, and the Curie temperature of the second induction unit is 150°C to 220°C.
The heater according to claim 1, wherein the accommodating cavity has an opening on the outer surface of the heater, and the first induction unit includes a base section and a sharp section connected to each other, so The cross-sectional size of the base section is uniformly set and the cross-sectional size of the spiked section is non-uniformly set, and the spiked section is closer to the opening than the base section and has a first The second sensing unit has a second end relatively adjacent to the opening.
The heater according to claim 13, wherein the second end is closer to the opening than the first end, and the distance between them along the axial direction of the heater is 0.5 mm to 2 mm. .
The heater according to claim 1, wherein the first induction unit includes a support and a heating element, the support is partially accommodated in the accommodating cavity, and the heating element is arranged on the support on the piece and located in the accommodating cavity.
The heater according to claim 15, wherein the supporting member is made of a material with weak magnetic permeability; the heating element is made of a material with strong magnetic permeability.
The heater according to claim 16, wherein the supporting member is made of glass or ceramics, and the heating member is made of stainless steel, nickel and nickel-based alloys, or iron and iron-based alloys.
The heater according to claim 15, wherein the first induction unit is a columnar structure with a cross-sectional size of 1.5 mm to 2.5 mm, the heating element is a cylindrical structure, and the thickness of the heating element is 10μm to 150μm and 8mm to 15mm in length.
The heater according to claim 15, wherein the first induction unit is a sheet structure, the width of the first induction unit is 3 mm to 6 mm and the thickness is 0.3 mm to 0.55 mm, and the heating element As a sheet structure, the heating element has a thickness of 10 μm to 150 μm and a length of 8 mm to 15 mm.
The heater according to claim 15, wherein the first induction unit further comprises a ceramic layer or a glass glaze layer covering the heating element.
The heater according to claim 15, wherein the orthographic projection of the second induction unit on the first induction unit covers part of the heating element.
The heater according to claim 1, further comprising a bearing unit at least partially accommodated in the accommodating cavity, the bearing unit can be in contact with the atomized medium carrier, and the first sensor The unit is arranged on the carrying unit.
The heater according to claim 1, wherein the accommodating cavity comprises a first accommodating section, and the first accommodating section has an opening on the outer surface of the heater, and the first accommodating section has an opening. The caliber of the accommodating section decreases along the direction away from the opening, and there is an air intake gap communicating with the outside world through the opening between the inner wall surface of the first accommodating section and the atomized medium carrier.
The heater according to claim 1, wherein the magnetic field generating unit is a coil, and the coil is located outside the accommodating cavity and arranged around the accommodating cavity.
A heating atomization device, characterized by comprising a power supply and the heater according to any one of claims 1 to 24, the power supply is connected to the heater and supplies power to the heater.