A heating component, atomizing device and electronic cigarette

Abstract

The utility model provides a heating component, an atomizing device and an electronic cigarette. The heating component is used to generate heat to atomize liquid, and includes multiple heating units. The heating unit includes a heating body, a first conductor and a second conductor. The heating body includes a first heating part, a second heating part and a connecting part. The connecting part is arranged between the first heating part and the second heating part. The first conductor and the second conductor are respectively arranged at the two ends of the heating body, and are respectively fixedly connected to the first heating part and the second heating part. The heating component also includes a third conductor, and the third conductor is used to electrically connect multiple connecting parts. The heating component proposed by the utility model controls the independent working conditions of multiple heating parts through multiple conductors, thereby adjusting the amount of atomization. The heating parts work in turns, which can also increase the service life and reduce the problem of carbon deposition. Each heating part corresponds to atomizing different liquids, and can also achieve the effect of mixing different flavors of mist. It has the advantages of simple structure and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of atomization, in particular to a heating component, an atomization device and an electronic cigarette. Background Art

[0002] The carbon deposit problem during electronic cigarette atomization refers to the fact that during the use of electronic cigarettes, the components in the e-liquid liquid will produce some residual substances during the heating process, and will accumulate to a certain extent in the heating part and other parts. These residual substances may have a negative impact on the health of the user and will also reduce the service life of the electronic cigarette.

[0003] Most of the electronic cigarettes currently on the market use a single heating element solution. Continuous use of one heating element will soon trigger the problem of carbon deposition. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a heating component, an atomizing device and an electronic cigarette, which can control the independent working conditions of multiple heating parts through multiple conductors, thereby adjusting the amount of atomization; the heating parts can work in turn to increase the service life and reduce the problem of carbon deposition; each heating part atomizes different liquids correspondingly, and can also achieve the effect of mixing different flavors of mist. It has the advantages of simple structure and low cost.

[0005] The utility model provides a heating component, which is used for generating heat to atomize liquid, and comprises a plurality of heating units, wherein the heating units comprise a heating body, a first conductor and a second conductor, the heating body comprises a first heating portion, a second heating portion and a connecting portion, and the connecting portion is arranged between the first heating portion and the second heating portion; the first conductor and the second conductor are respectively arranged at two ends of the heating body, and are respectively fixedly connected to the first heating portion and the second heating portion; the heating component also comprises a third conductor, and the third conductor is used to electrically connect the plurality of connecting portions.

[0006] Further, the first heating part and the second heating part are mesh structures, the connecting part is a sheet, the first heating part, the second heating part and the connecting part are located on the same horizontal plane and current can flow among the three.

[0007] Furthermore, the first conductor, the second conductor and the third conductor include a fixing portion and a lead portion, the fixing portion is fixedly connected to the heating element, and the lead portion is used to be electrically connected to an electrode of an external power source.

[0008] Furthermore, the heating component further includes a plurality of insulating members, and the insulating members are respectively arranged on the lead portions of the first conductor, the second conductor, and the third conductor.

[0009] Furthermore, the heating component includes two heating units, the two heating units are located on the same horizontal plane, two connecting parts extend out of the heating units, the two connecting parts are fixedly connected and located on the same straight line, and the third conductor is fixedly connected to the two connecting parts.

[0010] Furthermore, the third conductor is electrically connected to the plurality of connecting parts to form a common electrode terminal for the plurality of the first heating parts and the second heating parts, and the plurality of the first conductors and the second conductors are respectively electrically connected to another electrode to form a pathway for driving the corresponding first heating parts and / or the second heating parts to operate.

[0011] Furthermore, the plurality of heating units are respectively located on different parallel planes, and the third conductor includes a bending portion, a fixing portion and a lead portion to electrically connect the connection portions on different planes.

[0012] Furthermore, the heating component is bent to form an arc surface, the plurality of heating elements are located on the arc surface, and the first conductor, the second conductor and the third conductor extend in the same direction after being bent.

[0013] The utility model also provides an atomizing device, comprising a shell, an oil-conducting body and a heating component as described in any one of the above items, wherein the oil-conducting body is fixed in the shell, a through hole is provided on the shell for exposing the outer side surface of the oil-conducting body, the oil-conducting body is hollow to form an inner side surface, and the heating component is arranged on the inner side surface for heating and atomizing the liquid in the oil-conducting body.

[0014] The utility model also provides an electronic cigarette, comprising a liquid storage device, a control system, a power supply and the atomization device as described above; the liquid storage device comprises a liquid storage chamber connected to the outer side surface of the oil-conducting body, and the atomization device is used to atomize the liquid in the liquid storage chamber; one electrode of the power supply is electrically connected to the third conductor, and the other electrode of the power supply is electrically connected to multiple first conductors and second conductors respectively; the control system comprises multiple switches arranged between the first conductor, the second conductor and the electrodes of the power supply, which are used to control the working states of the corresponding first heating part and the second heating part.

[0015] In summary, the embodiment of the utility model can control the independent working conditions of multiple heating parts through multiple conductors, thereby adjusting the amount of atomization; the heating parts can work in turns to increase the service life and reduce the problem of carbon deposition; each heating part atomizes different liquids correspondingly, and can also achieve the effect of mixing different flavors of mist. It has the advantages of simple structure and low cost.

[0016] Furthermore, the third conductor is electrically connected to the plurality of connecting parts to form a common electrode terminal for the plurality of first heating parts and the second heating parts, and the plurality of first conductors and the second conductors are electrically connected to another electrode to form a path for driving the corresponding first heating parts and / or second heating parts to work. This control circuit has a simple structure and occupies a small volume, and is suitable for a small space such as an electronic cigarette.

[0017] Moreover, the heating unit can be located on the same horizontal plane or on multiple parallel planes, which is suitable for different electronic cigarette structural layout schemes and has high applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the heating component in the first embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the heating element in the first embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the heating component in the second embodiment of the utility model;

[0022] Figure 4 This is a front view of the heating component in the third embodiment of the utility model;

[0023] Figure 5 It is a side view of the heating component in the third embodiment of the utility model;

[0024] Figure 6 The structure of the heating component in the third embodiment of the utility model is shown in FIG. Figure 1 ;

[0025] Figure 7 The structure of the heating component in the third embodiment of the utility model is shown in FIG. Figure 2 ;

[0026] Figure 8 This is a front view of the atomizing device in the fourth embodiment of the utility model;

[0027] Fig. 9 It is a side view of the atomizing device in the fourth embodiment of the utility model;

[0028] Fig.10The structure of the atomizing device in the fourth embodiment of the utility model is shown in FIG. Figure 1 ;

[0029] Fig.11 The structure of the atomizing device in the fourth embodiment of the utility model is shown in FIG. Figure 2 ;

[0030] Fig.12 This is an exploded view of the structure of the atomizing device in the fourth embodiment of the utility model;

[0031] Fig.13 The structure of the atomizing device in the fifth embodiment of the utility model is shown in FIG. Figure 1 ;

[0032] Fig.14 The structure of the atomizing device in the fifth embodiment of the utility model is shown in FIG. Figure 2 ;

[0033] Fig.15 This is a schematic diagram of the structure of the atomizing device in the sixth embodiment of the utility model;

[0034] Fig.16 It is a side view of the atomizing device in the sixth embodiment of the utility model;

[0035] Fig.17 The internal structure of the atomizing device in the sixth embodiment of the present invention is shown in FIG. Figure 1 ;

[0036] Fig.18 The internal structure of the atomizing device in the sixth embodiment of the present invention is shown in FIG. Figure 2 .

[0037] The reference numerals of the embodiments of the present invention in the above drawings are as follows: 100, heating element; 110, first heating portion; 120, second heating portion; 130, connecting portion; 200, first conductor;

[0038] 300. a second conductor;

[0039] 400, third conductor; 410, bending portion; 420, fixing portion; 430, lead portion;

[0040] 500, insulation parts;

[0041] 600, housing; 610, through hole;

[0042] 700. Oil conductor;

[0043] 800, a first support member;

[0044] 900, second support member;

[0045] 1000. Guide. DETAILED DESCRIPTION

[0046] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0048] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0049] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0050] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0051] The following is a detailed description through specific embodiments.

[0052] like Figure 1 to Figure 2As shown, the first embodiment of the utility model provides a heating component for generating heat to atomize liquid, including multiple heating units, the heating unit including a heating body 100, a first conductor 200 and a second conductor 300, the heating body 100 including a first heating part 110, a second heating part 120 and a connecting part 130, the connecting part 130 is arranged between the first heating part 110 and the second heating part 120; the first conductor 200 and the second conductor 300 are respectively arranged at two ends of the heating body 100, and are respectively fixedly connected to the first heating part 110 and the second heating part 120; the heating component also includes a third conductor 400, and the third conductor 400 is used to electrically connect the multiple connecting parts 130.

[0053] Specifically, in this embodiment, there are two heating units, which are distributed in a mirror-symmetrical manner. The heating element 100 is made of a thermal resistance material, and when current flows through the heating part, electrical energy is converted into thermal energy.

[0054] In this embodiment, the first heating part 110 and the second heating part 120 are mesh structures, the connecting part 130 is a sheet, the first heating part 110, the second heating part 120 and the connecting part 130 are located on the same horizontal plane and current can flow among them.

[0055] In this embodiment, the first conductor 200, the second conductor 300 and the third conductor 400 include a fixing portion 420 and a lead portion 430. The fixing portion 420 is fixedly connected to the heating element 100, and the lead portion 430 is used to electrically connect to an electrode of an external power source.

[0056] In this embodiment, the heating component further includes a plurality of insulating members 500, which are respectively disposed on the lead portions 430 of the first conductor 200, the second conductor 300, and the third conductor 400. The insulating members 500 are used to separate the conductors from the housing when the heating component is mounted on the atomizing device, and can also prevent short circuits caused by contact between the conductors.

[0057] In this embodiment, the heating component includes two heating units, the two heating units are located on the same horizontal plane, the two connecting parts 130 extend from the heating units, the two connecting parts 130 are fixedly connected and located on the same straight line, and the third conductor 400 is fixedly connected to the two connecting parts 130. The lead directions of the conductor are distributed on both sides of the straight line, and the whole is slender, which is suitable for electronic cigarettes with circuits arranged in two directions.

[0058] In this embodiment, the third conductor 400 is electrically connected to multiple connecting parts 130 to form a common electrode terminal for multiple first heating parts 110 and second heating parts 120, and multiple first conductors 200 and second conductors 300 are electrically connected to another electrode to form a pathway for driving the corresponding first heating parts 110 and / or second heating parts 120 to operate.

[0059] Specifically, one end of the third conductor 400 is connected to the electrode, and the other end is fixedly connected to the connecting part 130, and the connecting part 130 is connected to one end of the first heating part 110 and the second heating part 120, so the third conductor 400 can be regarded as a common electrode end of the heating part. On the other hand, the first conductor 200 connects the other end of the first heating part 110 and the other electrode; the second conductor 300 connects the other end of the second heating part 120 and the other electrode. The third conductor 400, the connecting part 130, the first heating part 110 and the first conductor 200 form a circuit, and the third conductor 400, the connecting part 130, the second heating part 120 and the second conductor 300 form a circuit. The third conductor 400 is always electrically connected to the electrode, and a switch is set between the first conductor 200 and the second conductor 300 and the electrode. The switch can be controlled to control the opening and closing of the first heating part 110 and the second heating part 120.

[0060] Specifically, the heating component of this embodiment has multiple working modes: 1) Single-shot switching mode, in which the heating parts work one by one in turn. 2) Double-shot up and down alternating mode, in which the heating bodies 100 of the upper and lower heating units work separately and alternately, and only two heating parts work at the same time. 3) Double-shot X alternating mode, in which the heating parts in the diagonal direction work alternately, and only two heating parts work at the same time. 4) Double-shot left and right alternating mode, in which the two heating parts on the left and the two heating parts on the right work alternately, and only two heating parts work at the same time. The main effect of these working modes is to extend the service life of the heating part and avoid the carbon deposition problem caused by the long-term operation of the heating part.

[0061] On the other hand, the number of heating parts working simultaneously can be controlled, thereby controlling the amount of atomization.

[0062] In this embodiment, the first heating portion 110 and the second heating portion 120 are mesh structures, and the mesh holes are air flow holes for allowing air flow to take away smoke when flowing through the surface.

[0063] like Figure 3 As shown, the second embodiment of the utility model provides a heating component, wherein a plurality of heating units are respectively located on different parallel planes, and the third conductor 400 includes a bending portion 410, a fixing portion 420 and a lead portion 430 to electrically connect the connection portions 130 on different planes. The two heating units are connected via the bending portion 410, and the lead direction of each conductor is consistent, which is suitable for an electronic cigarette structure in which the circuit is arranged on one side.

[0064] like Figures 4 to 7As shown, the third embodiment of the utility model provides a heating component, which is bent to form an arc surface, multiple heating elements 100 are located on the arc surface, and the first conductor 200, the second conductor 300 and the third conductor 400 are bent and extended in the same direction.

[0065] In this embodiment, the arc surface is the side of a cylinder, and the heating component includes two heating units, which are bent into the shape of a cylindrical side. The connecting portion 130 is arranged along the axial direction of the cylinder, and the first heating portion 110 and the second heating portion 120 are distributed on both sides of the cylinder. It is suitable for cylindrical electronic cigarettes or atomization devices, and the lead direction of each conductor is consistent, and it is suitable for electronic cigarette structures with circuits arranged on one side.

[0066] like Figures 8 to 12 As shown, the fourth embodiment of the utility model further provides an atomizing device, comprising a shell 600, an oil-conducting body 700 and a heating component as in any of the above embodiments, wherein the oil-conducting body 700 is fixed in the shell 600, a through hole 610 is provided on the shell 600 for exposing the outer side surface of the oil-conducting body 700, the oil-conducting body 700 is hollow to form an inner side surface, and the heating component is arranged on the inner side surface for heating and atomizing the liquid in the oil-conducting body 700.

[0067] In this embodiment, the housing 600 is a cylindrical hollow shell for accommodating and fixing the oil guide body 700 and the heating component. A groove is provided on the side wall of the housing 600 in the axial direction. The oil guide body 700 is a hollow cylinder with a protrusion on the outer surface. The protrusion is used to insert into the groove for clamping, so that the oil guide body 700 is fixed inside the housing 600. The oil guide body 700 is made of cotton material, which has the effect of absorbing liquid and flowing in the oil guide body 700. Specifically, the oil guide body 700 is oil-conducting cotton. A plurality of through holes 610 are provided on the side opposite to the groove on the housing 600. The through holes 610 are used to expose part of the outer side of the oil guide body 700. The oil penetrates into the outer side of the oil guide body 700 through the through holes 610, and gradually penetrates into the inner side of the oil guide body 700 to contact the heating element 100. The two sides of the heating element 100 are set to be serrated, which is used to insert into the inner side of the oil guide body 700 for fixing, preventing the displacement of the heating component, and also increasing the contact area between the heating element 100 and the oil guide body 700, thereby improving the atomization effect. After the heating element 100 generates heat, it heats the liquid absorbed by the oil guide body 700 to generate atomized gas, which passes through the air flow holes of the mesh structure and flows out of the atomization device from the cylindrical center of the heating component.

[0068] In this embodiment, the first conductor 200 and the second conductor 300 of one heating unit are bent and routed from the inside of the housing 600, the first conductor 200 and the second conductor 300 of the other heating unit are bent and routed from the outside of the housing 600, and the third conductor 400 is fixedly connected to the connection parts 130 of the two heating units and routed from the inside of the housing 600. An insulating member 500 is installed on each conductor to prevent leakage or short circuit.

[0069] In this embodiment, in particular, the oil guide body 700 can be divided into a plurality of sub-blocks, each of which corresponds to a through hole 610 exposed, each of which corresponds to a liquid storage cavity connected to a liquid, each of which corresponds to a heating part for heating, and each of which is spaced apart to prevent the liquids of different sub-blocks from mixing flavors. The effect of this design is that each heating part controls the atomization switch of a flavor liquid, and can achieve mixed atomization of multiple flavor liquids, achieving a richer taste experience.

[0070] like Fig.13 and Fig.14 As shown, the fifth embodiment of the utility model also provides an atomization device, which further includes a first support member 800 and a second support member 900 on the basis of the fourth embodiment. The first support member 800 is a cylindrical long rod, which is used to be inserted into the center of the heating component to support the heating component and prevent the heating component from being squeezed, collided and deformed during transportation. Optionally, a plurality of axial grooves can be provided on the first support member 800 to avoid the third conductor 400. The second support member 900 has a structure similar to a gear and is arranged in the housing 600. The center is empty for the first support member 800 to pass through, and the gear protrusion is used to clamp the first conductor 200 and the second conductor 300 to prevent displacement or deformation. The first support member 800 needs to be pulled out before use to avoid affecting the flow of mist.

[0071] like Figures 15 to 18As shown, the sixth embodiment of the utility model also provides an atomization device, which further includes a guide 1000 on the basis of the fifth embodiment. The guide 1000 is a cylindrical sleeve, which is used to be inserted into the shell 600, and plays a role in guiding the flow of mist generated by the heating element 100. The outer wall of the guide 1000 is in contact with the inner wall of the shell 600, and the bottom of the guide 1000 is in contact with the top of the heating element 100, so that the guide 1000 acts as a channel to guide the flow direction of the mist. In this embodiment, the through hole 610 is a large-area opening, and the side of the oil guide body 700 is exposed from the through hole 610 to absorb the liquid in the liquid storage chamber; on the other hand, there is also a protrusion on the side of the oil guide body 700, which protrudes from the shell 600 to increase the contact area with the liquid in the liquid storage chamber. In this embodiment, the first conductor 200 and the second conductor 300 of the two heating units are bent and routed from the inside of the housing 600, and the third conductor 400 is fixedly connected to the connection parts 130 of the two heating units and routed from the inside of the housing 600. An insulating member 500 is installed on each conductor to prevent leakage or short circuit. Compared with the routing method of the fifth embodiment, the routing method of this embodiment is safer and more reliable, so that the conductors are all inside the housing, which prevents the conductors from being corroded and contaminated by oil.

[0072] The seventh embodiment of the utility model also provides an electronic cigarette, including a liquid storage device, a control system, a power supply and an atomization device as in any of the above embodiments; the liquid storage device includes a liquid storage chamber connected to the outer side of the oil guide body 700, and the atomization device is used to atomize the liquid in the liquid storage chamber; one electrode of the power supply is electrically connected to the third conductor 400, and the other electrode of the power supply is electrically connected to multiple first conductors 200 and second conductors 300 respectively; the control system includes multiple switches arranged between the first conductors 200 and the second conductors 300 and the electrodes of the power supply, which are used to control the working states of the corresponding first heating parts 110 and the second heating parts 120.

[0073] In summary, the embodiment of the utility model can control the independent working conditions of multiple heating parts through multiple conductors, thereby adjusting the amount of atomization; the heating parts can work in turns to increase the service life and reduce the problem of carbon deposition; each heating part atomizes different liquids correspondingly, and can also achieve the effect of mixing different flavors of mist. It has the advantages of simple structure and low cost.

[0074] Furthermore, the third conductor 400 is electrically connected to the plurality of connecting parts 130 to form a common electrode terminal for the plurality of first heating parts 110 and the second heating parts 120, and the plurality of first conductors 200 and the second conductors 300 are electrically connected to another electrode to form a path for driving the corresponding first heating parts 110 and / or the second heating parts 120 to work. This control circuit has a simple structure and occupies a small volume, and is suitable for a small space such as an electronic cigarette.

[0075] Moreover, the heating unit can be located on the same horizontal plane or on multiple parallel planes, which is suitable for different electronic cigarette structural layout schemes and has high applicability.

[0076] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A heating component for generating heat to atomize a liquid, characterized in that: It includes multiple heating units, the heating units include a heating body, a first conductor and a second conductor, the heating body includes a first heating part, a second heating part and a connecting part, the connecting part is arranged between the first heating part and the second heating part; the first conductor and the second conductor are respectively arranged at the two ends of the heating body, and are respectively fixedly connected to the first heating part and the second heating part; the heating component also includes a third conductor, and the third conductor is used to electrically connect the multiple connecting parts.

2. The heating component according to claim 1, characterized in that: The first heating part and the second heating part are mesh structures, the connecting part is a sheet, the first heating part, the second heating part and the connecting part are located on the same horizontal plane and current can flow among the three.

3. The heating component according to claim 1, characterized in that: The first conductor, the second conductor and the third conductor include a fixing portion and a lead portion, the fixing portion is fixedly connected to the heating element, and the lead portion is used to be electrically connected to an electrode of an external power source.

4. The heating component according to claim 3, characterized in that: The heating component further includes a plurality of insulating members, which are respectively disposed on the lead portions of the first conductor, the second conductor, and the third conductor.

5. The heating component according to claim 1, characterized in that: The heating component includes two heating units, the two heating units are located on the same horizontal plane, two connecting parts extend out of the heating units, the two connecting parts are fixedly connected and located on the same straight line, and the third conductor is fixedly connected to the two connecting parts.

6. The heating component according to claim 1, characterized in that: The third conductor is electrically connected to the plurality of connecting parts to form a common electrode terminal for the plurality of the first heating parts and the second heating parts. The plurality of the first conductors and the second conductors are respectively electrically connected to another electrode to form a pathway for driving the corresponding first heating parts and / or the second heating parts to operate.

7. The heating component according to claim 1, characterized in that: The plurality of heating units are respectively located on different parallel planes, and the third conductor comprises a bending portion, a fixing portion and a lead portion to electrically connect the connection portions on different planes.

8. The heating component according to claim 1, characterized in that: The heating component is bent to form an arc surface, the plurality of heating elements are located on the arc surface, and the first conductor, the second conductor and the third conductor extend in the same direction after being bent.

9. An atomizing device, characterized in that: It comprises a shell, an oil-conducting body and a heating component as described in any one of claims 1 to 8, wherein the oil-conducting body is fixed in the shell, a through hole is provided on the shell for exposing the outer side surface of the oil-conducting body, the oil-conducting body is hollow to form an inner side surface, and the heating component is arranged on the inner side surface for heating and atomizing the liquid in the oil-conducting body.

10. An electronic cigarette, characterized in that: It includes a liquid storage device, a control system, a power supply and an atomization device as described in claim 9; the liquid storage device includes a liquid storage chamber connected to the outer side of the oil-conducting body, and the atomization device is used to atomize the liquid in the liquid storage chamber; one electrode of the power supply is electrically connected to the third conductor, and the other electrode of the power supply is electrically connected to multiple first conductors and second conductors respectively; the control system includes multiple switches arranged between the first conductor, the second conductor and the electrodes of the power supply, which are used to control the corresponding working states of the first heating part and the second heating part.

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