Heating device and electronic cigarette

Abstract

A heating device and an electronic cigarette. The heating device comprises a heat-receiving plate (20) and a heating plate (10); the heat-receiving plate (20) comprises at least one heat-receiving area (21) and a non-heat-receiving area (22) at least partially surrounding the at least one heat-receiving area (21); the heating plate (10) comprises at least one heating area (11) arranged in one-to-one correspondence with the at least one heat-receiving area (21); for each heating area, the heating area (11) is used for providing heat energy to the heat-receiving area (21) corresponding to the heating area; in a direction from the heat-receiving area (21) corresponding to the heating area to the heating area (11), the projection of the heating area (11) overlaps the projection of the heat-receiving area (21) corresponding to the heating area.

Description

Heating devices and electronic cigarettes

[0001] This application claims priority to Chinese Patent Application No. 202410996372.8, filed on July 24, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of heating technology, such as a heating device and an electronic cigarette. Background Technology

[0003] In semiconductor fabrication, heating devices are typically required to heat the semiconductor, causing the liquid material coated on its surface to solidify. In some devices requiring internal heating, heaters are usually installed inside to heat the target material. Due to the high emission power and concentrated energy of lasers, their application as heating sources is currently widespread.

[0004] In related technologies, heating devices typically employ a planar structure for laser heating equipment to improve the heating uniformity of the material being heated. However, when the material to be heated has both a heating zone and a non-heating zone, and these zones are interspersed, the laser heating equipment, with its entire surface area set up, will simultaneously heat both zones, leading to malfunctions in the equipment and other issues related to the material being heated.

[0005] Summary of the Invention

[0006] This application provides a heating device, including:

[0007] A heating plate includes at least one heated area and at least a non-heated area surrounding the at least one heated area;

[0008] The heating plate includes at least one heating zone that corresponds one-to-one with the at least one heated zone; for each heating zone, the heating zone is used to provide heat energy to the heated zone corresponding to the heating zone; along the direction from the heated zone corresponding to the heating zone toward the heating zone, the projection of the heating zone overlaps with the projection of the heated zone corresponding to the heating zone.

[0009] Optionally, each heating zone includes at least one laser along the direction of the plane where the heating plate is located.

[0010] Optionally, each heating zone further includes: a beam adjustment unit;

[0011] For each heating zone, the beam adjustment unit in the heating zone is located on the light-emitting side of the plurality of lasers, and the beam adjustment unit is configured to collimate the laser beam emitted by each laser.

[0012] Optionally, the beam adjustment unit includes at least one collimating lens that corresponds one-to-one with at least one laser.

[0013] Optionally, in a direction perpendicular to the plane of the heating plate, each heating zone includes at least two lasers arranged in an overlapping manner.

[0014] Optionally, the heating plate further includes at least one pulse driving unit that corresponds one-to-one with at least one heating zone;

[0015] For each pulse driving unit, the pulse driving unit is electrically connected to each laser in the heating zone corresponding to the pulse driving unit, and the pulse driving unit is used to control the output power of the laser beam emitted by each laser in the heating zone corresponding to the pulse driving unit.

[0016] Optionally, when the heating plate includes at least two heating zones, the output power of the at least two heating zones is different.

[0017] Optionally, the heating plate further includes: a power supply unit;

[0018] The power supply unit is electrically connected to each of the pulse drive units.

[0019] Optionally, the heating plate further includes at least one power supply unit that corresponds one-to-one with at least one heating zone;

[0020] For each power supply unit, each power supply unit is electrically connected to the pulse drive unit corresponding to the power supply unit. When the heating plate includes at least two power supply units, the power supply signals provided by the at least two power supply units are different.

[0021] This application also provides an electronic cigarette, including the heating device. Attached Figure Description

[0022] Figure 1 is a top view of a heating device provided in an embodiment of this application;

[0023] Figure 2 is a schematic diagram of the cross-sectional structure along section A-A' in Figure 1.

[0024] Figure 3 is a top view of a heat-receiving plate according to an embodiment of this application;

[0025] Figure 4 is a top view of a heating plate according to an embodiment of this application;

[0026] Figure 5 is a cross-sectional structural diagram of a heating plate provided in an embodiment of this application;

[0027] Figure 6 is a cross-sectional structural diagram of another heating plate provided in an embodiment of this application;

[0028] Figure 7 is a cross-sectional structural diagram of another heating plate provided in an embodiment of this application;

[0029] Figure 8 is a cross-sectional structural diagram of another heating plate provided in an embodiment of this application;

[0030] Figure 9 is a pulse signal curve provided in an embodiment of this application;

[0031] Figure 10 is a top view of another heating plate provided in an embodiment of this application;

[0032] Figure 11 is a cross-sectional structural diagram of a heating plate provided in an embodiment of this application;

[0033] Figure 12 is a cross-sectional structural diagram of another heating plate provided in an embodiment of this application;

[0034] Figure 13 is a cross-sectional structural diagram of another heating plate provided in an embodiment of this application;

[0035] Figure 14 is a cross-sectional structural diagram of another heating plate provided in an embodiment of this application. Detailed Implementation

[0036] Figure 1 is a top view of a heating device according to an embodiment of this application, and Figure 2 is a cross-sectional view along section A-A' in Figure 1. Referring to Figures 1 and 2, the heating device includes a heating plate 20 and a heating plate 10. The heating plate 20 includes at least one heating zone 21 and at least a non-heated zone 22 surrounding the at least one heating zone 21. The heating plate 10 includes at least one heating zone 11 corresponding to the at least one heating zone 21. For each heating zone 11, the heating zone 11 is used to provide heat energy to the heating zone 21 corresponding to the heating zone 11. Along the direction from the heating zone 21 corresponding to the heating zone 11 toward the heating zone 11, the projection of the heating zone 11 overlaps with the projection of the heating zone 21 corresponding to the heating zone 11.

[0037] The material of the heating plate 20 can be set according to actual needs. For example, the material of the heated area 21 includes materials such as fibers, and the material of the non-heated area 22 includes heat insulation materials such as polyurethane or ceramics. Under the premise of ensuring that at least one heating area 11 in the heating plate 10 corresponds one-to-one with at least one heated area 21 in the heating plate 20, the shape of the heating plate 10 can be the same as or different from the shape of the heating plate 20, and the number of heated areas 21 can be one or more, which can be set according to actual needs, and is not specifically limited here.

[0038] For example, the heated zone 21 is used to receive heat energy, while the non-heated zone 22 does not need to receive heat energy. By setting at least one heating zone 11 corresponding to at least one heated zone 21, the heat energy provided by the heating zone 11 can be directly transferred to the corresponding heated zone 21, improving the heat reception efficiency of the heated zone 21. Furthermore, along the direction from the heated zone 21 to the heating zone 11, by setting the projection of the heating zone 11 to overlap with the projection of the corresponding heated zone 21, the heat energy provided by the heating zone 11 can only be received by the corresponding heated zone 21, preventing the heat energy provided by the heating zone 11 from being received by the non-heated zone 22, which could lead to malfunctions in the heating device. The heating zone 11 may include heating devices such as lasers, and can be configured according to actual needs.

[0039] It is understood that Figure 1 only shows the heating plate 20 in which the non-heated area 22 completely surrounds the heated area 21. Figure 3 is a top view of a heating plate according to an embodiment of this application. As shown in Figure 3, the non-heated area 22 in the heating plate 20 surrounds the heated area 21. The arrangement of the heated area 21 and the non-heated area 22 is related to the actual application scenario of the heating device. The specific arrangement of the non-heated area 22 surrounding the heated area 21 can be set according to actual needs, and no specific limitation is made here. Figure 1 only shows the arrangement in which the heating plate 20, heating plate 10, heating area 11 and heated area 21 are all rectangular, and the heating plate 10 and the heating plate 20 have the same shape and size. The heated area 21 has the same shape as the corresponding heating area 11. The shapes of the heating plate 20 and the heating plate 10 can also be circular, etc., and the shapes of the heating area 11 and the heated area 21 can also be circular, etc., which can be set according to actual needs, and no specific limitation is made here.

[0040] It should be noted that, along the direction from the heated area 21 towards the corresponding heating area 11, there can be a certain distance between the heated area 21 and the heating area 11. This is to prevent the heated area 21 from being burned by the heat provided by the heating area 11 after it is attached to the heating area 11, thus protecting the heating area 11 and improving the safety and reliability of the heating device. The distance between the heated area 21 and the heating area 11 can be set according to actual needs. For example, the distance between the heated area 21 and the heating area 11 can be 1 cm, but other distances are also possible; no specific limitation is made here.

[0041] The technical solution provided in this application, by setting at least one heating zone in the heating plate of the heating device, corresponding one-to-one with at least one heating zone of the heating plate, allows the heat energy provided by the heating zone to be transferred to the heating zone, thereby improving the heating efficiency of the heating plate for the heating zone. Along the direction from the heating zone to the heating zone, by overlapping the projection of the heating zone with the projection of the heating zone, the heat energy provided by the heating zone is ensured to be received only by the heating zone, preventing the heat energy provided by the heating zone from being received by non-heating zones and causing malfunctions in the heating device, thus improving the reliability and heating efficiency of the heating device.

[0042] Optionally, Figure 4 is a top view of a heating plate according to an embodiment of this application. As shown in Figure 4, each heating zone 11 includes at least one laser 31 along the direction of the plane where the heating plate 10 is located.

[0043] Among them, the laser 31 includes a vertical cavity surface emitting laser (VCSEL), which has the advantages of small size and easy integration. Using a vertical cavity surface emitting laser can reduce the overall structure of the heating zone 11, thereby reducing the overall structure of the heating device and improving the ease of use of the heating device.

[0044] For example, the number of lasers 31 in the heating zone 11 corresponding to the heated zone 21 can be set according to the size of the heated zone 21. When the beam emitted by one laser 31 can cover the heated zone 21, only one laser 31 can be set in the heating zone 11. When the beams emitted by multiple lasers 31 can cover the heated zone 21, multiple lasers 31 can be set in the heating zone 11. In this way, by setting lasers 31 as the heating source, the overall size of the heating device can be reduced. At the same time, since lasers 31 have the characteristics of high efficiency and low power consumption, the heating efficiency of the heating device can be improved, the power consumption of the heating device can be reduced, and the service life of the heating device can be extended.

[0045] Optionally, Figure 5 is a cross-sectional structural diagram of a heating plate provided in an embodiment of this application. As shown in Figure 5, each heating zone 11 further includes a beam adjustment unit 32. For each heating zone 11, the beam adjustment unit 32 in the heating zone 11 is located on the light-emitting side of multiple lasers 31, and the beam adjustment unit 32 is configured to collimate the laser beam emitted by each laser 31. The multiple lasers are arranged side by side along the plane of the heating plate 10.

[0046] The beam adjustment unit 32 includes beam adjustment devices such as convex lenses, which can be set according to actual needs, and no specific limitation is made here.

[0047] For example, the laser beam emitted by the laser 31 will scatter during transmission. By setting a beam adjustment unit 32 on the light-emitting side of the laser 31, the beam adjustment unit 32 can collimate the laser beam emitted by the laser, thereby increasing the number of laser beams emitted by the laser 31 in the heating zone 11 that are incident on the corresponding heated zone 21 of the heating zone 11, and thus increasing the heating rate of the heating zone 11 on the corresponding heated zone 21.

[0048] It is understandable that, provided the beam adjustment unit 32 can collimate the laser beam emitted from the laser 31, the structure of the beam adjustment unit 32 can be configured according to actual needs. In an optional embodiment, the beam adjustment unit 32 includes multiple collimating lenses 320 corresponding one-to-one with the multiple lasers 31. The multiple collimating lenses 320 are respectively disposed on the light-emitting side of the multiple lasers 31, such that one collimating lens 320 corresponds to one laser 31, so that each collimating lens 320 can collimate the laser beam emitted from its corresponding laser 31, thereby increasing the number of beams emitted from the heating zone 11 to the corresponding heated zone 21, and thus improving the heating efficiency of the heating zone 11 on the corresponding heated zone 21.

[0049] It should be noted that the number of lasers in Figure 5 is merely an example. Those skilled in the art should understand that each heating zone 11 may include one laser and / or a beam adjustment unit corresponding to that laser.

[0050] Optionally, Figure 6 is a cross-sectional structural schematic diagram of another heating plate provided in an embodiment of this application. As shown in Figure 6, in the direction Z0 perpendicular to the plane where the heating plate 10 is located, each heating zone 11 includes at least two lasers 31 that are stacked.

[0051] For example, in the direction Z0 perpendicular to the plane of the heating plate 10, the laser 31 can be made of a light-transmitting material, so that the laser beams emitted by both the laser 31 near and away from the heated zone 21 can be transmitted to the heated zone 21. This increases the number of laser beams emitted to the heated zone 21, thereby increasing the output power of the heated zone 11 and enabling the heated zone 21 to reach the set temperature in a shorter time, thus improving the heating efficiency of the heating device. For example, in the direction Z0 perpendicular to the plane of the heating plate 10, each heating zone 11 includes two overlapping lasers 31 with the same output power of 10W. The total power of the laser emitted by the two overlapping lasers 31 is then 20W, which increases the power of the laser emitted from the heated zone 11 and improves the heating efficiency.

[0052] It is understood that, in the direction Z0 perpendicular to the plane where the heating plate 10 is located, the number of lasers 31 overlapping in the heating zone 11 is greater than two. This number can be set according to the heat energy required by the heated zone 21 and the output power of each laser 31. In another optional embodiment, the number of lasers 31 overlapping in the heating zone 11 is three, or other numbers may be used. No specific limitation is made here.

[0053] Optionally, Figure 7 is a cross-sectional structural schematic diagram of another heating plate provided in the embodiment of this application, and Figure 8 is a cross-sectional structural schematic diagram of yet another heating plate provided in the embodiment of this application. Referring to Figures 7 and 8, the heating plate 10 further includes at least one pulse driving unit 33 that is disposed in a one-to-one correspondence with at least one heating zone 11. For each pulse driving unit 33, the pulse driving unit 33 is electrically connected to each laser 31 of the heating zone 11 corresponding to the pulse driving unit 33. The pulse driving unit 33 is used to control the output power of the laser beam emitted by each laser 31 in the heating zone 11 corresponding to the pulse driving unit 33.

[0054] The laser 31 needs to emit a laser beam under the drive of a driving signal, which may include a voltage signal or a current signal. The pulse driving unit 33 may include devices such as switching transistors. The specific structure of the pulse driving unit 33 can be set according to actual needs and is not specifically limited here.

[0055] For example, the pulse drive unit 33 can provide a periodic pulse drive signal to each laser 31. Under the action of the pulse drive signal, the laser 31 periodically emits a laser beam. Within one pulse cycle, the pulse drive unit 33 can provide a larger pulse drive current to the laser 31 for a period of time, enabling the laser 31 to emit a laser beam with higher power. During another period of time, the pulse drive unit 33 can provide a smaller pulse drive current to the laser 31, and the laser 31 stops emitting a laser beam, allowing the laser 31 to dissipate heat during that period, thereby improving the lifespan and operational reliability of the laser 31. Thus, by setting the pulse drive unit 33, the total output power of the laser 31 can be increased, thereby improving the heating efficiency of the heating zone 11 on the heated zone 21, while also increasing the lifespan of the laser 31 and improving the reliability of the heating device.

[0056] It should be noted that commonly used lasers are all continuously emitting light. Since lasers generate a large amount of heat during operation, to prevent this heat from affecting their operation, the output power is usually reduced, thereby reducing the heat generated. For example, when the laser is continuously emitting light, the driving current supplied to the laser is 1A, and the total output power of the laser within 3 seconds is 6W. The pulse driving unit 33 provided in this embodiment can adjust the period and duty cycle of the pulse driving signal supplied to the laser 31 to control the output power of the laser beam emitted by each laser 31 within the heating zone 11. Figure 9 is a pulse signal curve provided in an embodiment of this application. As shown in Figure 9, the pulse driving unit 33 can provide a pulse driving signal with a period of 3s to each laser 31. In one pulse cycle, the pulse driving unit 33 provides a pulse current of 2A to the laser 31 in the first 2s and a pulse current of 0A to the laser 31 in the last 1s. The total power generated by the laser 31 in one cycle is 16W, and the heat generated by the laser 31 in the first 2s can be dissipated in the last 1s. In this way, the total output power of the laser 31, as well as the reliability and service life of the laser 31, can be improved, thereby improving the heating efficiency of the heating zone 11 to the heated zone 21 and improving the heating reliability of the heating device.

[0057] It is understood that the pulse driving unit 33 is electrically connected to each laser 31 of the heating zone 11 corresponding to the pulse driving unit 33, so that each laser 31 in the same heating zone 11 can emit the same output power, in order to determine the output power of the heating zone 11. The output power of each heating zone 11 can be the same or different. When the heat energy required by each heated zone 21 is the same, the output power of the heating zone 11 corresponding to the heated zone 21 can be the same. When there are at least two heated zones 21 in the heated plate 10 that require different heat energy, in an optional embodiment, when the heated plate 10 includes at least two heating zones 11, there are at least two heating zones 11 in the heated plate 10 with different output power, so that each heating zone 11 can provide the required heat energy to the corresponding heated zone 21. The difference in output power between the two heating zones 11 can be achieved by the pulse driving signal provided by the pulse driving unit 33. For example, Figure 10 is a top view of another heating plate provided in an embodiment of this application. As shown in Figure 10, the heating plate 20 is circular, and the heating area 21 is also circular. The heating area 21 includes a first heating area 211 located at the center of the heating plate 20, and a plurality of second heating areas 212 surrounding the first heating area 211. If the heat energy required by the first heating area 211 is greater than the heat energy required by the second heating area 212, then the pulse period provided by the pulse driving unit 33 in the heating area 11 corresponding to the first heating area 211 can be greater than the pulse period provided by the pulse driving unit 33 in the second heating area 212, and / or, the duty cycle of the pulse signal provided by the pulse driving unit 33 in the heating area 11 corresponding to the first heating area 211 can be greater than the duty cycle of the pulse signal provided by the pulse driving unit 33 in the second heating area 212, so as to increase the laser power emitted by the heating area 11 corresponding to the first heating area 211, meet the heating requirements of different heating areas 21 in the heating plate 20, and improve the practicality of the heating device.

[0058] Optionally, Figure 11 is a cross-sectional structural schematic diagram of a heating plate provided in an embodiment of the present application, and Figure 12 is a cross-sectional structural schematic diagram of another heating plate provided in an embodiment of the present application. Referring to Figures 11 and 12, the heating plate 10 further includes a power supply unit 34, which is electrically connected to each pulse drive unit 33.

[0059] For example, the power supply unit 34 is used to provide a power supply signal to each pulse drive unit 33. The power supply signal includes a current signal or a voltage signal so that when the pulse drive unit 33 transmits the power supply signal to the laser 31, the laser 31 can emit a laser beam. Since the power supply signal provided by the power supply unit 34 is a fixed value, it is necessary to adjust the pulse period and duty cycle through the pulse drive unit 33 so that the output power provided by some heating zones 11 is different.

[0060] The above description only illustrates the method of adjusting the output power of each heating zone 11 in the heating plate 10 through the pulse drive unit 33. In an optional embodiment, FIG13 is a cross-sectional structural schematic diagram of another heating plate provided in the embodiment of this application, and FIG14 is a cross-sectional structural schematic diagram of yet another heating plate provided in the embodiment of this application. Referring to FIG13 and FIG14, the heating plate 10 further includes at least one power supply unit 34 corresponding to at least one heating zone 11; for each power supply unit, each power supply unit 34 is electrically connected to the pulse drive unit 33 corresponding to the power supply unit 34. When the heating plate 10 includes at least two power supply units 34, there are at least two power supply units 34 in the heating plate 10 that provide different power supply signals.

[0061] For example, by setting at least two power supply units 34 in the heating plate 10 to provide different power supply signals, if different output power is required for at least two heating zones 11, the pulse period and duty cycle of the pulse drive unit 33 corresponding to each heating zone 11 can be the same. If the power supply signal provided by the power supply unit 34 is larger, the output power provided by the heating zone 11 corresponding to the power supply unit 34 is larger, so as to match the heating zone 21 in the heating plate 20 that requires more heat energy. In addition, by setting a power supply unit 34 in each heating zone 11, when some heating zones 21 do not need to be heated, the power supply state of the power supply unit 34 can be controlled independently, so that some power supply units 34 cannot provide power supply signals to the corresponding pulse drive unit 33, thereby preventing some heating zones 11 from providing heat energy, so as to adapt to different heating needs and improve control convenience and practicality.

[0062] Based on the same concept, this application also provides an electronic cigarette, including the heating device provided in this application. Therefore, the electronic cigarette has the technical features of the heating device provided in this application and can achieve the beneficial effects of the heating device provided in this application. The similarities can be referred to the above description of the heating device provided in this application, and will not be repeated here.

Claims

1. A heating device, comprising: a heated plate comprising at least one heated area and a non-heated area at least partially surrounding the at least one heated area; a heating plate comprising at least one heating area corresponding to the at least one heated area; for each heating area, the heating area is configured to provide heat energy to the heated area corresponding to the heating area; in a direction along the heated plate, a projection of the heating area overlaps a projection of the heated area corresponding to the heating area.

2. The heating device of claim 1, wherein, Each heating area comprises at least one laser in a direction along the heated plate.

3. The heating device of claim 2, wherein, Each heating area further comprises a beam adjusting unit. For each heating area, the beam adjusting unit is located at an emission side of the plurality of lasers, and the beam adjusting unit is configured to collimate the laser beams emitted by each laser.

4. The heating device of claim 3, wherein, The beam adjusting unit comprises at least one collimating lens corresponding to the at least one laser.

5. The heating device of claim 2, wherein, In a direction perpendicular to the heated plate, each heating area comprises at least two lasers arranged in an overlapping manner.

6. The heating device of claim 2 or 3, wherein, The heating plate further comprises at least one pulse driving unit corresponding to the at least one heating area. For each pulse driving unit, the pulse driving unit is electrically connected to each laser in the heating area corresponding to the pulse driving unit, and the pulse driving unit is configured to control the output power of the laser beams emitted by each laser in the heating area corresponding to the pulse driving unit.

7. The heating device of claim 6, wherein, When the heating plate comprises at least two heating areas, the output powers of the at least two heating areas are different.

8. The heating device of claim 6, wherein, The heating plate further comprises a power supply unit. The power supply unit is electrically connected to each pulse driving unit.

9. The heating device of claim 6, wherein, The heating plate further comprises at least one power supply unit corresponding to the at least one heating area. For each power supply unit, the power supply unit is electrically connected to the pulse driving unit corresponding to the power supply unit, and when the heating plate comprises at least two power supply units, the at least two power supply units provide different power supply signals.

10. An electronic cigarette comprising: The heating device according to any one of claims 1 to 9.

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