HEATING ASSEMBLY AND VAPORIZER

Abstract

A heating assembly includes: a liquid guiding element; and a heating element arranged on a vaporization surface formed by the liquid guiding element, the heating element being energizable to generate heat. The heating element includes a first heating part and a second heating part. A temperature coefficient of resistance of the first heating part is greater than a temperature coefficient of resistance of the second heating part. The first heating part and the second heating part form an electrical connection structure.

Description

CROSS-REFERENCE TO PRIOR APPLICATION

Priority is claimed to Chinese Patent Application No. 202211434884.2, filed on Nov. 16, 2022, the entire disclosure of which is hereby incorporated by reference herein.

FIELD

The present invention relates to the field of electronic vaporization technologies, and in particular, to a heating assembly and a vaporizer.

BACKGROUND

In related technologies, a metal heating element of a mainstream heating element for electronic vaporization is based on iron, nickel, and chromium. Because temperature sensitivity of TCR is poor and accuracy of temperature control is low, a problem of overheating is prone to occur. To implement a temperature control function of the heating element, an alloy material with better properties generally needs to be used, resulting in an increase in material costs. In an electronic vaporization technology, it is difficult to take into account temperature sensitivity characteristics of TCR and the material costs.

SUMMARY

In an embodiment, the present invention provides a heating assembly, comprising: a liquid guiding element; and a heating element arranged on a vaporization surface formed by the liquid guiding element, the heating element being configured to be energized to generate heat, wherein the heating element comprises a first heating part and a second heating part, wherein a temperature coefficient of resistance of the first heating part is greater than a temperature coefficient of resistance of the second heating part, and wherein the first heating part and the second heating part form an electrical connection structure.

BRIEF DESCRIPTION OF THE DRAWINGS

Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:

FIG. 1 is a schematic diagram of a structure of a heating assembly according to an embodiment of the present invention;

FIG. 2 is another schematic diagram of a structure of a heating assembly according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a structure of a heating element according to an embodiment of the present invention; and

FIG. 4 is another schematic diagram of a structure of a heating element according to an embodiment of the present invention.

DETAILED DESCRIPTION

In an embodiment, the present invention provides a heating assembly and a vaporizer. A heating assembly in the embodiments of the present invention includes:

• • a liquid guiding element; and
  • a heating element, arranged on a vaporization surface formed by the liquid guiding element, where the heating element is configured to be energized to generate heat; and
  • the heating element includes a first heating part and a second heating part, a temperature coefficient of resistance of the first heating part is greater than a temperature coefficient of resistance of the second heating part, and the first heating part and the second heating part form an electrical connection structure.

In the heating assembly, the temperature coefficient of resistance of the first heating part is greater than the temperature coefficient of resistance of the second heating part, so that a resistance change of the first heating part is greater than a resistance change of the second heating part, and an overall heating condition of the heating element is easier to control. On the basis of not significantly changing a vaporization effect formed by heating, an effect of temperature control and adjustment of the heating element is taken into account.

In some embodiments, a material of the first heating part includes a first alloy, and a material of the second heating part includes a second alloy, the first alloy material includes at least one of stainless steel and a silver-platinum alloy, and/or the second alloy material includes a nickel-chromium alloy. In this way, this helps ensure consistency of the temperature coefficient of resistance of the entire first heating part. In some embodiments, the length of the first heating part ranges from 0.5 mm to 3.0 mm, and a length direction of the first heating part corresponds to a flow direction of a current flowing through the first heating part. In this way, accuracy of temperature measurement of the heating element may be improved.

In some embodiments, the heating element includes a heating center, the first heating part is arranged at the heating center, and a maximum temperature formed by the heating element at the heating center is greater than a maximum temperature formed by the heating element at a position outside the heating center. In this way, accuracy of temperature measurement of the heating element may be improved. In some embodiments, the heating element includes an electrode connection region, the first heating part is arranged in the electrode connection region, and

• • an electrode electrically connected to the heating element is located in the electrode connection region. In this way, an original temperature distribution condition surrounding the heating element may be guaranteed.

In some embodiments, the first heating part and the second heating part are arranged in contact with each other to form the electrical connection structure connected in parallel. In this way, a temperature control effect of the heating element may be implemented.

In some embodiments, two ends of the first heating part are electrically connected to the second heating part in different segments separately to form the electrical connection structure connected in series. In this way, a temperature control effect of the heating element may be implemented.

In some embodiments, the heating element includes at least two first heating parts, and the at least two first heating parts are spaced apart in an extending direction of the second heating part. In other words, each first heating part is electrically connected to a corresponding part of the second heating part. In this way, a temperature control effect of the heating element may be improved.

In some embodiments, the heating element includes:

• • at least one first segment; and
  • at least one second segment, where the at least one first segment and the at least one second segment are connected end to end to form the heating element, and an extending direction of the first segment is different from an extending direction of the second segment. In this way, a heating area of the heating element may be increased.

A vaporizer in the embodiments of the present invention includes:

• • the heating assembly of any embodiment.
  • In the vaporizer, the temperature coefficient of resistance of the first heating part is greater than the temperature coefficient of resistance of the second heating part, so that a resistance change of the first heating part is greater than a resistance change of the second heating part, and an overall heating condition of the heating element is easier to control. On the basis of not significantly changing a vaporization effect formed by heating, an effect of temperature control and adjustment of the heating element is taken into account.

The additional aspects and advantages of the present invention will be set forth in part in the description below, parts of which will become apparent from the description below, or will be understood by the practice of the present invention.

LIST OF REFERENCE NUMERALS

• • heating assembly 100; liquid guiding element 110;
  • heating element 120, first heating part 121, second heating part 122, first segment 123, and second segment 124; and
  • electrode 140.

Detail description of embodiments of the present invention will be made in the following, and examples thereof are illustrated in the drawings, throughout which identical or similar elements or elements of identical or similar functions are represented with identical or similar reference numerals. The embodiments that are described with reference to the accompanying drawings are exemplary, and are only used to interpret the present invention, instead limiting the present invention.

Many different embodiments or examples are provided in the following disclosure to implement different structures of the present invention. To simplify the disclosure of the present invention, components and settings in particular examples are described below. Certainly, they are merely examples and are not intended to limit the present invention. In addition, in the present invention, reference numerals and/or reference letters may be repeated in different examples. The repetition is for the purposes of simplification and clearness, and a relationship, and does not indicate a relationship between the discussed various embodiments and/or configurations. Moreover, the present invention provides examples of various particular processes and materials, but a person of ordinary skill in the art may be aware of application of another process and/or use of another material.

Refer to FIG. 1, a heating assembly 100 in the embodiments of the present invention includes a liquid guiding element 110 and a heating element 120. The heating element 120 is arranged on a vaporization surface formed by the liquid guiding element 110. The heating element 120 is configured to be energized to generate heat. The heating element 120 includes at least two heating parts with different temperature coefficients of resistance (TCR). It should be noted that for ease of understanding, in this application, a heating part with a greater temperature coefficient of resistance is named a first heating part 121; and a heating part with a smaller temperature coefficient of resistance is named a second heating part 122. The heating element 120 includes the first heating part 121 and the second heating part 122. The temperature coefficient of resistance (TCR) of the first heating part 121 is different from the temperature coefficient of resistance of the second heating part 122. The first heating part 121 and the second heating part 122 form an electrical connection structure.

The second heating part 122 may be understood as another structure that may generate heat by being energized other than the first heating part 121 on the heating element 120.

In the heating assembly 100, the temperature coefficient of resistance of the first heating part 121 is greater than the temperature coefficient of resistance of the second heating part 122. In this way, in a case of the same temperature change, a relative change of a resistance value of the first heating part 121 is greater than a relative change of a resistance value of the second heating part 122, so that an overall resistance change of the heating element 120 is greater than an overall resistance change of the heating element 120 in a case that there is only a second heating part 122. In other words, the overall temperature coefficient of resistance of the heating element 120 is greater than the overall temperature coefficient of resistance of the heating element 120 in a case that there is only a second heating part 122.

Therefore, a higher temperature coefficient of resistance of the heating element 120 may be achieved without significantly changing a vaporization effect formed by generating heat. In this embodiment, the heating element 120 may achieve better temperature control and adjustment effects.

It may be understood that the key to the temperature control and adjustment is to correspond to a current corresponding real-time temperature by detecting a resistance value of the heating element 120, and then perform temperature control by determining whether a temperature exceeds a threshold.

In some embodiments, the liquid guiding element 110 may be one of a porous ceramic, porous glass, a porous polymer, porous metal, or porous carbon. The liquid guiding element 110 may guide a liquid aerosol-generating substrate from the other surface of the liquid guiding element to a vaporization surface on which the heating element 120 is located by using capillary action through a porous structure that the liquid guiding element 110 has. The porous structure of the liquid guiding element 110 may be a straight hole or a random hole. The straight hole may be prepared on a dense matrix in manners such as mechanical processing, laser drilling, and the like. The random hole may be prepared by adding a pore-forming agent to a raw material of the liquid guiding element and sintering, to form a porous structure with the random hole inside. The liquid guiding element 110 may be in a cylindrical structure, or may be in other types of columnar structures, such as a square columnar structure.

The vaporization surface on which the heating element is located is arranged on the liquid guiding element 110, and the vaporization surface may also be a flat surface or a curved surface. In a specific embodiment in FIG. 1, the liquid guiding element 110 is a cuboid, and the vaporization surface is the flat surface.

Specifically, in FIG. 1, the heating assembly 100 includes two electrodes 140. One end of the heating element 120 is electrically connected to one of the electrodes 140, and the other end of the heating element 120 is electrically connected to the other electrode 140, thereby forming an electrical connection between the heating element 120 and the two electrodes 140. The two electrodes 140 may be made of a material that is the same as a material of the second heating part 122, or may be made of another material. The another material that is different from the material of the second heating part 122 and that the two electrodes 140 are made of may be an alloy material including a highly conductive material such as silver or a simple metal material.

It may be understood that the temperature coefficient of resistance of the first heating part 121 or the second heating part 122 is related to a material that the first heating part 121 or the second heating part 122 is made of. However, the resistance value of the heating element is still affected by factors such as a position at which the first heating part 121 or the second heating part 122 is located, an electrical connection manner between the first heating part 121 and the second heating part 122, a material of the first heating part 121 or the second heating part 122, a specific size (such as a surface area or thickness) of the first heating part 121 or the second heating part 122. That a temperature coefficient of resistance of the first heating part 121 is different from the temperature coefficient of resistance of the second heating part 122 may be that the temperature coefficient of resistance of the first heating part 121 is greater than the temperature coefficient of resistance of the second heating part 122. In addition, by arranging the first heating part 121, a service life, adaptability, manufacturing cost, and the like of the heating assembly 100 may not be further significantly changed.

In some embodiments, a corresponding value range for the temperature coefficient of resistance of the first heating part 121 may be greater than 300 ppm, so that the resistance value of the first heating part 121 has sufficient sensitivity to a change in temperature.

In some embodiments, a material of the first heating part 121 includes a first alloy, and a material of the second heating part 122 includes a second alloy. A temperature coefficient of resistance of the first alloy is different from a temperature coefficient of resistance of the second alloy.

In this way, this helps ensure consistency of the temperature coefficient of resistance of the entire first heating part 121.

It may be understood that compared with a pure metal material, an alloy material has better stability in many aspects, and may also show good resistance change characteristics when heated. This further ensures that when the first heating part 121 needs to have a specific temperature coefficient of resistance, the overall temperature coefficient of resistance of the first heating part 121 has a consistent effect.

In some embodiments, the second alloy material includes a nickel-chromium alloy. In some embodiments, the first alloy material includes at least one of stainless steel, a silver alloy, a platinum alloy, or a silver-platinum alloy. It may be understood that compared with directly using a heating element made of a single material, both costs and TCR characteristics may be taken into account when the heating element is made of two different materials in the embodiments of this application.

Refer to FIG. 1, in some embodiments, the heating element 120 includes a heating center. The first heating part 121 is arranged at the heating center. A maximum temperature formed by generating heat by the heating element 120 at the heating center is greater than a maximum temperature formed by generating heat by the heating element 120 at a position outside the heating center. It may be understood that the heating center is a region with the highest temperature on the vaporization surface. Generally, in an embodiment in which a shape of the heating element 120 is symmetrical, the heating center is a geometric center or a symmetrical center; and a reason is that the geometric center or symmetrical center is a region in which a greatest quantity of thermal fields are superimposed. Symmetry may be a symmetrical manner such as axial symmetry, central symmetry, rotational symmetry, or the like. Certainly, in an embodiment in which the heating element 120 is not symmetrical, the first heating part 121 may also be arranged in another region in which the thermal fields are relatively concentrated.

In this way, accuracy of temperature measurement of the heating element 120 may be improved.

Specifically, in FIG. 1, the heating center is represented as X1. As shown in a specific embodiment in FIG. 1,

a shape of the heating element 120 in the embodiment is rotationally symmetrical, the heating center is the symmetrical center, and the first heating part 121 may be arranged in the region.

When the heating element 120 is energized to generate heat, a temperature of the heating element 120 at the heating center rises rapidly. When the first heating part 121 is arranged at the heating center, heat is easily conducted to the first heating part 121, which may cause an electrical parameter of the first heating part 121 to change more sensitively in response to a change in a temperature, so that the first heating part 121 may more accurately reflect a temperature change of the heating element 120. Therefore, when the temperature change of the heating element 120 is detected by the first heating part 121, accuracy of temperature measurement of the heating element 120 may be improved.

In some embodiments, the length of the first heating part 121 ranges from 0.5 mm to 3.0 mm. A length direction of the first heating part 121 corresponds to a flow direction of a current flowing through the first heating part 121. In this way, accuracy of temperature measurement of the heating element 120 may be improved.

Specifically, in some cases, if the length of the first heating part 121 is less than 0.5 mm, it may be difficult to achieve an expected effect of performing temperature control and adjustment on the heating element 120 due to the small size of a structure of the first heating part 121; and if the length of the first heating part 121 is greater than 3.0 mm, an overall manufacturing cost may be increased due to the large size of a structure of the first heating part 121. In some embodiments, the length (mm) of the first heating part 121 may be 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, and 3.0. In the embodiment shown in FIG. 1 and FIG. 2, a length direction of the first heating part 121 may correspond to a B1 direction and a B2 direction. In other embodiments, a length direction of the first heating part 121 may correspond to a B3 direction and a B4 direction.

In other embodiments, other size parameters (such as the thickness and width) of the first heating part 121 may be further defined accordingly, thereby achieving an effect of improving the accuracy of the temperature measurement of the heating element 120.

Refer to FIG. 2, in some embodiments, the heating element 120 includes an electrode connection region. The first heating part 121 is arranged in the electrode connection region. An electrode 140 electrically connected to the heating element 120 is located in the electrode connection region.

In this way, an original temperature distribution condition surrounding the heating element 120 may be guaranteed.

Specifically, in FIG. 2, the electrode connection region is represented as X2. The heating element 120 is electrically connected to one corresponding electrode 140 in the electrode connection region. Because the electrode connection region is away from a heating center, the heating element 120 generates heat in the electrode connection region and a temperature does not greatly rise. By arranging the first heating part 121 in the electrode connection region, influence on a temperature field surrounding the heating element 120 due to arranging the first heating part 121 may be reduced. When an aerosol-generating substrate is vaporized by generating heat through the heating element 120, an original heating effect of the aerosol-generating substrate may be retained. It should be noted that although a temperature of the electrode connection region is relatively low, the electrode connection region has a relatively greater area; and therefore, by arranging the first heating part 121 in the electrode connection region, good temperature control and measurement effects may also be achieved.

Refer to FIG. 3, in some embodiments, the first heating part 121 and the second heating part 122 are arranged in contact with each other to form the electrical connection structure connected in parallel.

In this way, a temperature control effect of the heating element 120 may be implemented.

Specifically, in FIG. 3, an A1 direction and an A2 direction represent an extending direction of the heating element 120, and an A3 direction and an A4 direction represent a direction perpendicular to a surface of the heating element 120. The first heating part 121 is arranged in the A1 direction and the A2 direction, and is connected in contact with a side surface of the heating element 120 located in the A3 direction.

When the heating element 120 is energized to generate heat, in the A3 direction and the A4 direction, a part of overlapping projection between the second heating part 122 and the first heating part 121 is connected in parallel with the first heating part 121, so that a current is simultaneously conducted in the second heating part 122 and the first heating part 121 at a position at which the first heating part 121 is located.

Refer to FIG. 4, in some embodiments, two ends of the first heating part 121 are electrically connected to the second heating part 122 in different segments separately to form the electrical connection structure connected in series.

In this way, a temperature control effect of the heating element 120 may be implemented.

Specifically, in FIG. 4, the second heating part 122 is divided into different segments. One segment is electrically connected to one side of the first heating part 121 located in an A1 direction, and the other segment is electrically connected to one side of the first heating part 121 located in an A2 direction, so that first heating part 121 and the second heating part 122 of the two segments form an electrical connection structure connected in series. In this case, the first heating part 121 may be arranged in contact with a liquid guiding element 110.

When the heating element 120 is energized to generate heat, a current flows from one segment of the second heating part 122 through the first heating part 121, and is conducted to the other segment of the second heating part 122. A current flowing through the first heating part 121 and a current flowing through the second heating part 122 are the same, so that a degree of heating of the heating element 120 is limited, thereby ensuring a temperature control effect of the first heating part 121 on the heating element 120.

Refer to FIG. 2, in some embodiments, the heating element 120 includes at least two first heating parts 121. The at least two first heating parts 121 are spaced apart in an extending direction of the second heating part 122. In other words, each first heating part 121 is electrically connected to a corresponding part of the second heating part 122.

In this way, a temperature control effect of the heating element 120 may be improved. It may be understood that because a vaporization surface is a flat surface or a curved surface with a specific area, there is a temperature field distribution in a region in which the vaporization surface is located, and different sub-regions may have different temperature distributions. Therefore, at least two first heating parts 121 are respectively arranged in corresponding sub-regions, which helps improve accuracy of overall temperature measurement of the vaporization surface, and a related parameter may reflect a temperature of the entire vaporization surface. The related parameter is mainly a resistance value of the heating element 120; and when other conditions are constant, the resistance value is determined by a corresponding quantity of first heating parts 121 at a corresponding temperature and a corresponding quantity of second heating parts 122 at a corresponding temperature. Therefore, the resistance value of the heating element 120 may be measured, to correspondingly determine a corresponding temperature on the vaporization surface under the resistance, thereby implementing temperature control of a vaporization assembly.

Specifically, in FIG. 2, a quantity of first heating parts 121 is two. One of the first heating parts 121 is arranged at a position close to one of the electrodes 140, and the other first heating part 121 is arranged at a position close to the other electrode 140. It may be understood that by arranging at least two first heating parts 121, all the first heating parts 121 may cooperate with each other to reduce concentrated occurrence of high temperatures, thereby increasing influence of the first heating part 121 on a temperature change of the heating element 120 when generating heat, and improving a temperature control effect on the heating element 120.

In addition, based on the foregoing embodiments, the embodiments of the present invention may be further shown in the table below.

TABLE 1
First heating part	Electrical
121	connection		Length	TCR
Position	manner	Materials	(mm)	(ppm/° C.)
X1	Serial	Stainless steel	0.6	320
	connection
X1	Serial	Stainless steel	1.2	400
	connection
X1	Serial	Silver-platinum	0.6	260
	connection	alloy
X1	Serial	Silver-platinum	1.2	320
	connection	alloy
X1	Parallel	Stainless steel	0.6	200
	connection
X1	Parallel	Stainless steel	1.2	250
	connection
X1	Parallel	Silver-platinum	0.6	180
	connection	alloy
X1	Parallel	Silver-platinum	1.2	200
	connection	alloy
X2	Serial	Stainless steel	0.6	400
	connection
X2	Serial	Stainless steel	1.2	500
	connection
X2	Serial	Silver-platinum	0.6	260
	connection	alloy
X2	Serial	Silver-platinum	1.2	320
	connection	alloy
X2	Parallel	Stainless steel	0.6	250
	connection
X2	Parallel	Stainless steel	1.2	350
	connection
X2	Parallel	Silver-platinum	0.6	200
	connection	alloy
X2	Parallel	Silver-platinum	1.2	300
	connection	alloy

In Table 1, in a case of maintaining a basic shape of the second heating part 122 unchanged, by adjusting a position at which the first heating part 121 is located, an electrical connection manner between the first heating part 121 and the second heating part 122, a material of the first heating part 121, and the length of the first heating part 121 in a heating circuit, a temperature coefficient of resistance of the heating element 120 in the heating assembly 100 may be correspondingly obtained. In a comparative example, a heating element with the same shape is prepared by using a material mainly composed of a nickel-chromium alloy and including about 20% of glass phase, where TCR of the heating element 120 is 150 ppm/° C. As above, a proper temperature coefficient of resistance of the heating element 120 may be determined according to a specific condition, and the corresponding temperature coefficient of resistance of the heating element 120 may be implemented by adjusting the related influencing factors on the first heating part 121. The influencing factors mainly include: a material type, an electrical connection manner, a geometric shape parameter (geometric parameters such as the length, the width, the thickness) of the first heating part 121, and the like.

Refer to FIG. 1, in some embodiments, the heating element 120 includes the at least one first segment 123 and the at least one second segment 124. The at least one first segment 123 and the at least one second segment 124 are connected end to end to form the heating element 120. An extending direction of the first segment 123 is different from an extending direction of the second segment 124.

In this way, one specific scheme for forming the heating element 120 may be provided.

Specifically, in FIG. 1, a B1 direction and a B2 direction represent an extending direction of the first segment 123, and a B3 direction and a B4 direction represent an extending direction of the second segment 124. A quantity of first segments 123 is more than one, and a quantity of second segments 124 is more than one. For the first segment 123 and the second segment 124, the first segment 123 and the second segment 124 are alternately connected to form the heating element 120. The first segment 123 located at one end of the heating element 120 is electrically connected to one electrode 140, and the first segment 123 located at the other end of the heating element 120 is electrically connected to the other electrode 140.

It may be understood that through sequential communication between the first segment 123 and the second segment 124, the heating element 120 has a curved and extended structure, which helps increase a heating area that the heating element 120 may generate when generating heat. In addition, through the first heating part 121 connected to the second heating part 122, the first heating part 121 may produce a heat conduction effect on the second heating part 122, so that heat generated by the second heating part 122 when generating heat may be better conducted in a direction away from the second heating part 122, thereby further increasing a heating area of the heating element 120, and simultaneously reducing a high temperature effect. In this way, a heat distribution surrounding the heating element 120 is more uniform, which helps cause the temperature surrounding the heating element 120 to be more uniform.

A vaporizer in the embodiments of the present invention includes the heating assembly 100 of any embodiment. The vaporizer includes a housing, a heating assembly 100, and a vaporization base assembly. The vaporization base assembly has a mounting cavity, and the heating assembly 100 is arranged in the mounting cavity; and the heating assembly 100 is jointly arranged in a housing 10 with the vaporization base assembly. The housing also forms a liquid storage cavity, and the liquid storage cavity is configured to store a liquid aerosol-generating substrate. The heating assembly 100 is in liquid communication with the liquid storage cavity, and is configured to vaporize an aerosol to generate a substrate.

This application further provides an electronic vaporization device. The electronic vaporization device 100 may be configured to vaporize an aerosol-generating substrate. The electronic vaporization device includes a vaporizer and a host that are electrically connected to each other. The host includes a battery and a controller. The battery is configured to provide electrical energy for operation of a vaporizer, so that the vaporizer may vaporize the aerosol-generating substrate to generate the aerosol; and the controller is configured to control the vaporizer to operate. The host further includes other components such as a battery holder, an airflow sensor, and the like.

In the vaporizer and the electronic vaporization device, a temperature coefficient of resistance of the first heating part 121 is different from a temperature coefficient of resistance of the second heating part 122, and has all beneficial effects of the heating assembly 100. In other words, an effect of temperature control and adjustment on the heating element 120 may be achieved without significantly changing a vaporization effect formed by generating heat.

In addition, the terms “first” and “second” are used merely for the purpose of description, and shall not be construed as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, a feature restricted by “first” or “second” may explicitly indicate or implicitly include one or more such features. In the descriptions of the present invention, unless otherwise explicitly specified, “multiple” means two or more than two.

In the descriptions of this specification, descriptions such as reference terms “an embodiment”, “some embodiments”, “exemplary embodiment”, “example”, “specific example”, or “some examples” intend to indicate that specific features, structures, materials, or characteristics described with reference to embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, schematic descriptions of the foregoing terms do not necessarily point at a same embodiment or example. In addition, the described specific features, structures, materials, or characteristics may be combined in a proper manner in any one or more of the embodiments or examples.

In the description of the present invention, it should be understood that, orientations or position relationships indicated by terms such as “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “up”, “down”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, and “counterclockwise” are orientations or position relationship shown based on the accompanying drawings, and are merely used for describing the present invention and simplifying the description, rather than indicating or implying that the apparatus or element should have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as a limitation on the present invention.

In the present invention, unless otherwise explicitly stipulated and restricted, that a first feature is “on” or “under” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but in contact by using other features therebetween. In addition, that the first feature is “on”, “above”, or “over” the second feature includes that the first feature is right above and on the inclined top of the second feature or merely indicates that a level of the first feature is higher than that of the second feature. That the first feature is “below”, “under”, or “beneath” the second feature includes that the first feature is right below and at the inclined bottom of the second feature or merely indicates that a level of the first feature is lower than that of the second feature.

In the description of the present invention, it should be noted that unless otherwise explicitly specified or defined, the terms such as “mount”, “install”, “connect”, and “connection” should be understood in a broad sense. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; or the connection may be a mechanical connection or an electrical connection; or the connection may be a direct connection, an indirect connection through an intermediate medium, internal communication between two components, or an interaction relationship between two components. A person of ordinary skill in the art may understand the specific meanings of the foregoing terms in the present invention according to specific situations.

While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.

The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.

Claims

1. A heating assembly, comprising:

a liquid guiding element; and

a heating element arranged on a vaporization surface formed by the liquid guiding element, the heating element being configured to be energized to generate heat,

wherein the heating element comprises a first heating part and a second heating part,

wherein a temperature coefficient of resistance of the first heating part is greater than a temperature coefficient of resistance of the second heating part, and

wherein the first heating part and the second heating part form an electrical connection structure.

2. The heating assembly of claim 1, wherein a material of the first heating part comprises a first alloy, and a material of the second heating part comprises a second alloy, and

wherein the first alloy comprises at least one of stainless steel and a silver-platinum alloy, and/or the second alloy comprises a nickel-chromium alloy.

3. The heating assembly of claim 1, wherein a length of the first heating part ranges from 0.5 mm to 3.0 mm, and

wherein a length direction of the first heating part corresponds to a flow direction of a current flowing through the first heating part.

4. The heating assembly of claim 1, wherein the heating element comprises a heating center,

wherein the first heating part is arranged at the heating center, and

wherein a maximum temperature formed by the heating element at the heating center is greater than a maximum temperature formed by the heating element at a position outside the heating center.

5. The heating assembly of claim 1, wherein the heating element comprises an electrode connection region,

wherein the first heating part is arranged in the electrode connection region, and

wherein an electrode electrically connected to the heating element is located in the electrode connection region.

6. The heating assembly of claim 1, wherein the first heating part and the second heating part are arranged in contact with each other to form the electrical connection structure connected in parallel.

7. The heating assembly of claim 1, wherein two ends of the first heating part are electrically connected to the second heating part in different segments separately to form the electrical connection structure connected in series.

8. The heating assembly of claim 1, wherein the heating element comprises at least two first heating parts, and

wherein the at least two first heating parts are spaced apart in an extending direction of the second heating part.

9. The heating assembly of claim 1, wherein the heating element comprises:

at least one first segment; and

at least one second segment,

wherein the at least one first segment and the at least one second segment are connected end to end to form the heating element, and

wherein an extending direction of the first segment is different from an extending direction of the second segment.

10. A vaporizer, comprising:

the heating assembly of claim 1.