Microwave atomizer and electronic atomization device

Abstract

The present invention relates to a microwave atomizer and an electronic atomization device. The microwave atomization device includes: a shell, including an outer shell and a metal layer. The metal layer is enclosed in the outer shell and encloses an atomization cavity that can be connected to the outside world. The atomization cavity is used to accommodate an aerosol generating matrix and can receive microwaves. The aerosol generating matrix generates heat and atomizes to form an aerosol under the action of microwaves. A shielding component is arranged on the outer shell and covers the atomization cavity. The shielding component is electrically connected to the metal layer to shield microwaves and pass aerosols. The aerosol generating matrix absorbs microwaves and generates heat under the action of intramolecular friction. The energy of the microwaves can be easily and accurately controlled to prevent some substances in the aerosol generating matrix from chemically reacting at higher temperatures to form a large amount of harmful substances, thereby ensuring the safety of the microwave atomizer. At the same time, the aerosol generating matrix is ​​quickly atomized to form smoke under the action of microwaves.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization, and in particular to a microwave atomizer and an electronic atomization device comprising the microwave atomizer. Background Art

[0002] Tobacco smoke contains dozens of carcinogens, such as tar, which is extremely harmful to human health. Furthermore, the smoke permeates the air, forming secondhand smoke that can harm people around you when inhaled. Therefore, smoking is strictly prohibited in most public places. Electronic vaporizers, on the other hand, have a similar appearance and taste to regular cigarettes, but typically do not contain the tar, particulate matter, and other harmful components found in cigarettes. Therefore, electronic vaporizers are widely used as a substitute for cigarettes.

[0003] Traditional electronic atomization devices typically use a heating element to heat and atomize an aerosol-generating substrate, such as tobacco, through heat conduction. However, this heating element can cause tobacco to produce a large amount of harmful substances. Furthermore, the heating element requires a long heating time to atomize the tobacco and produce smoke. Summary of the Invention

[0004] A technical problem solved by the present invention is how to reduce the presence of harmful substances in aerosols on the basis of rapid generation of aerosols.

[0005] A microwave atomizer, comprising:

[0006] The housing comprises an outer shell and a metal layer, wherein the metal layer is enclosed within the outer shell and forms an atomization cavity that is connected to the outside world. The atomization cavity is used to accommodate an aerosol-generating substrate and is capable of receiving microwaves. The aerosol-generating substrate generates heat and atomizes to form an aerosol under the action of microwaves; and

[0007] A shielding component is arranged on the shell and covers the atomization cavity. The shielding component is electrically connected to the metal layer to shield microwaves and allow aerosol to pass through.

[0008] In one embodiment, the shielding assembly includes a connector and a metal mesh arranged on the connector, the connector is installed on the shell, the metal mesh is electrically connected to the metal layer and covers the atomization chamber, and the metal mesh is provided with a vent hole that passes through the metal mesh and is used to pass the aerosol.

[0009] In one embodiment, the metal mesh includes a first metal mesh and a second metal mesh, and an air guide hole connected to the atomization chamber is opened on the connecting member. The first and second metal meshes are arranged at intervals along the extension direction of the air guide hole and cover the air guide hole. The first metal mesh covers the atomization chamber, and the second metal mesh is farther away from the atomization chamber than the first metal mesh.

[0010] In one embodiment, the first metal mesh and the second metal mesh are made of the same or different metal materials.

[0011] In one embodiment, the connecting member is detachably connected to the housing.

[0012] In one embodiment, the shell is made of the same metal material as the metal layer, or the shell is made of a non-metallic material.

[0013] In one embodiment, the metal layer has an inner circumferential surface that defines a portion of the boundary of the atomization chamber, and the metal layer is provided with a first transmission channel and a second transmission channel that penetrate the inner circumferential surface to connect the atomization chamber. The through openings of the first transmission channel and the second transmission channel on the inner circumferential surface are arranged at set angles along the circumference of the atomization chamber.

[0014] In one embodiment, the set angle ranges from 90° to 180°.

[0015] In one embodiment, the metal layer also has an inner bottom wall surface that defines a portion of the boundary of the atomization chamber, the inner bottom wall surface is connected to an end of the inner peripheral surface away from the shielding assembly, and the metal layer is also provided with a third transmission channel that passes through the inner bottom wall surface to connect to the atomization chamber.

[0016] In one embodiment, a microwave generating unit is further included, and a plurality of transmission channels connected to the atomization cavity for transmitting microwaves are opened on the metal layer. When the number of the microwave generating units is equal to the number of the transmission channels, different microwave generating units emit microwaves into the atomization cavity through different transmission channels; when the number of the microwave generating units is less than the number of the transmission channels, the same microwave generating unit can simultaneously emit microwaves into the atomization cavity through at least two transmission channels.

[0017] In one embodiment, the cross-section of the transmission channel is circular, elliptical, racetrack-shaped or regular polygonal.

[0018] In one embodiment, a mouthpiece is further included, and the mouthpiece is detachably connected to the shielding assembly. The aerosol in the atomization chamber enters the mouthpiece through the shielding assembly to be absorbed by the user.

[0019] An electronic atomization device comprises a power supply and the microwave atomizer described in any one of the above, wherein the power supply is connected to the microwave atomizer.

[0020] A technical effect of one embodiment of the present invention is that the aerosol-generating matrix absorbs microwaves and generates heat only under the action of intramolecular friction. The microwave energy can be easily and precisely controlled, so that the temperature formed by the heated aerosol-generating matrix deviates less from the atomization temperature. This prevents some substances in the aerosol-generating matrix from chemically reacting at higher temperatures to form large amounts of harmful substances, which could be absorbed by the human body through the aerosol and pose a health hazard, thereby ensuring the safety of the microwave atomizer. Since heat is generated through intramolecular friction, the aerosol-generating matrix can be rapidly heated to the atomization temperature in a short period of time to atomize and form smoke. This extremely short heating time eliminates the long waiting time caused by a longer heating time and improves the sensitivity of the entire microwave atomizer to the user's puff response. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic planar cross-sectional view of an electronic atomization device provided in one embodiment;

[0022] Figure 2 for Figure 1 The schematic diagram of the planar cross-sectional structure of the electronic atomization device after loading tobacco products;

[0023] Figure 3 A schematic diagram of a partial three-dimensional cross-sectional structure of an electronic atomization device provided in one embodiment;

[0024] Figure 4 Schematic diagram of microwave distribution simulation when tobacco products are in the atomization chamber. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0027] See also Figure 1 、 Figure 2 and Figure 3An electronic atomization device 10 provided in one embodiment of the present invention includes a microwave atomizer 20 and a power supply 30. The microwave atomizer 20 and the power supply 30 are interconnected. The power supply 30 can power the microwave atomizer 20 via a lithium battery. The aerosol-generating substrate within the microwave atomizer 20 can generate heat and atomize to form an aerosol under the action of microwaves. The aerosol is essentially a smoke that can be inhaled by the user. The microwave atomizer 20 includes a housing 100, a shielding assembly 200, a mouthpiece 320, and a microwave generating unit 310.

[0028] In some embodiments, the housing 100 includes a shell 110 and a metal layer 120, the metal layer 120 is enclosed within the shell 110, and a mounting hole 111 is provided on the shell 110 to connect to the outside world. The metal layer 120 is arranged to form an atomizing chamber 121, and the atomizing chamber 121 is connected to the mounting hole 111. For example, the shell 110 can be made of non-metallic materials such as plastic. In this case, a cavity can be first opened in the shell 110, and the cavity is connected to the mounting hole 111. Then, the metal layer 120 can be attached to the inner wall surface of the cavity by electroplating. After the metal layer 120 is formed, the metal layer 120 surrounds the remaining part of the cavity to form the above-mentioned atomizing chamber 121. The cross-section of the atomizing chamber 121 can be circular, elliptical or regular polygonal. For example, the shell 110 can be made of a metal material, and the material of the metal material can be exactly the same as the material of the metal layer 120. In this case, the shell 110 and the metal layer 120 can be integrally formed, that is, the entire shell 100 is made of the same metal material.

[0029] The microwave generating unit 310 is disposed in the housing 110 and outside the atomizing cavity 121. The microwave generating unit 310 can adopt a miniaturized solid-state microwave semiconductor chip unit, so that the volume of the microwave generating unit 310 can be reduced as much as possible, so that the installation space occupied by the microwave generating unit 310 is reduced, thereby reducing the total volume of the microwave atomizer 20 and the entire electronic atomizing device 10. A transmission channel 124 is opened on the metal layer 120, and the transmission channel 124 is interconnected with the atomizing cavity 121. The microwave generated by the microwave generating unit 310 enters the atomizing cavity 121 through the transmission channel 124. The cross-section of the transmission channel 124 can be circular, elliptical, racetrack-shaped, or a regular polygon.

[0030] The aerosol-generating matrix is ​​a solid tobacco product 40, which is housed within the atomization chamber 121 and contains an absorbing material. When the microwave generating unit 310 transmits microwaves into the atomization chamber 121 through the transmission channel 124, the absorbing material absorbs the microwaves within the atomization chamber 121, causing the dipole molecules of the absorbing material to vibrate back and forth at high frequencies under the action of the microwaves, generating internal friction. Ultimately, the internal friction forces generate heat in the tobacco product 40, which absorbs this heat and atomizes to form smoke. Of course, the solid tobacco product 40 can also be replaced with liquid tobacco liquid, meaning that the aerosol-generating matrix can also be liquid tobacco liquid.

[0031] If heating is performed using a heating plate pierced through the tobacco product 40, this heating method has at least the following drawbacks: ① The temperature control accuracy of the heating plate is poor. When the temperature of the heating plate is higher than the atomization temperature of the tobacco product 40, the tobacco product 40 will produce a large amount of harmful substances at a higher temperature, thereby posing a hazard to human health. ② The heating plate heats the tobacco product 40 by heat conduction. When the tobacco product 40 absorbs the heat from the heating plate and heats up to the atomization temperature, this heating process will take approximately twenty seconds. In other words, the user needs to wait at least twenty seconds before inhaling the smoke. This makes it impossible for the tobacco product 40 to quickly reach the atomization temperature and atomize to form smoke, thereby affecting the sensitivity of the entire electronic atomization device 10 to the user's puff. ③ Because the heating plate pierces the tobacco product 40, the edge of the tobacco product 40 is further away from the heating plate than the center. Heat from the heating plate is transferred from the center to the edge. The center absorbs heat earlier and reaches the atomization temperature first, while the edge absorbs heat later and reaches the atomization temperature later. This causes uneven heating of the tobacco product 40, making it impossible to ensure that all parts reach the atomization temperature simultaneously and atomize to form smoke, thereby affecting the concentration and taste of the smoke. Furthermore, the center of the tobacco product 40 may burn due to excessive temperature, resulting in a burnt smell in the smoke. ④ The manufacturing process for the heating plate is complex and has a low yield rate, making quality difficult to control, resulting in high manufacturing costs. Furthermore, the heating plate is prone to breaking, causing the entire electronic atomization device 10 to fail. Furthermore, the heating plate reacts with the tobacco product 40 at high temperatures to produce smoke odor. After absorbing heat, the smoke odor produces a burnt smell and toxic gases, affecting the taste of the smoke and endangering human health.

[0032] As for the microwave atomizer 20 of the above embodiment, the tobacco product 40 absorbs microwaves and generates heat under the action of intramolecular friction. This will at least produce the following beneficial effects: ① The energy of the microwaves can be easily and accurately controlled, so that the temperature formed after the tobacco product 40 is heated has a small deviation from the atomization temperature, preventing some substances in the tobacco product 40 from undergoing chemical reactions at higher temperatures to form a large amount of harmful substances, and preventing the smoke from carrying these harmful substances and being absorbed by the human body to cause health hazards, thereby ensuring the safety of the microwave atomizer 20 and the electronic atomization device 10. ② Since heat is generated by intramolecular friction, the tobacco product 40 can be quickly heated to the atomization temperature in a short period of time to atomize and form smoke. The heating time is extremely short, about one second, thereby eliminating the long waiting time caused by the long heating time and improving the sensitivity of the entire electronic atomization device 10 to the user's puff response. ③ The simultaneous vibration of molecules in various parts of the tobacco product 40 generates internal friction, causing the internal and external parts of the tobacco product 40 to simultaneously reach the atomization temperature and atomize simultaneously. This ensures uniform heating of the internal and external parts of the tobacco product 40, ensuring the smoke has a reasonable concentration and taste. It also prevents the burning smell and toxic gases caused by localized excessive temperatures in the tobacco product 40, further improving the taste and safety of the smoke. ④ Microwaves are relatively low-cost and eliminate the presence of smoke odors, which also prevent the burning smell and toxic gases produced by smoke odors, improving the taste and safety of the smoke.

[0033] In some embodiments, the shielding assembly 200 is disposed on the housing 110 and covers the atomizing chamber 121. The shielding assembly 200 is electrically connected to the metal layer 120 to shield microwaves and transmit aerosols. Specifically, the shielding assembly 200 may include a connector 210 and a metal mesh 220. The metal mesh 220 is disposed on the connector 210, and the metal mesh 220 can form a detachable connection relationship with the connector 210. The connector 210 can be made of a metal material and can be detachably connected to the housing 110. For example, an internal thread is provided in the mounting hole 111 of the housing 110, and an external thread is provided on the connector 210. When the internal thread and the external thread are engaged with each other, a threaded connection relationship between the connector 210 and the housing 110 can be achieved. Of course, the connector 210 and the housing 110 can also form a snap-on connection relationship. An air guide hole 211 is provided in the connector 210, and the air guide hole 211 extends in a vertical direction, and smoke can pass through the air guide hole 211.

[0034] The metal mesh 220 includes a first metal mesh 221 and a second metal mesh 222. The first metal mesh 221 and the second metal mesh 222 can be made of the same metal material, for example, both made of stainless steel. Of course, depending on the actual situation, the first metal mesh 221 and the second metal mesh 222 can also be made of different metal materials. The first metal mesh 221 and the second metal mesh 222 are both electrically connected to the metal layer 120 and each has ventilation holes 223. The ventilation holes 223 are distributed on the first metal mesh 221 and the second metal mesh 222 at a set density, allowing smoke to pass through the ventilation holes 223. The first metal mesh 221 and the second metal mesh simultaneously cover the air guide 211 hole and are spaced apart along the extension direction of the air guide 211 hole. For example, the second metal mesh 222 is located above the first metal mesh 221, so that the second metal mesh 222 is further away from the atomization chamber 121 than the first metal mesh 221. The first metal mesh 221 covers the atomization chamber 121.

[0035] Since the metal layer 120 is made of a metal material, the metal layer 120 has a shielding function for the microwaves in the atomization cavity 121, preventing the microwaves in the atomization cavity 121 from leaking out of the metal layer 120. At the same time, the first metal mesh 221 covers the atomization cavity 121 and is electrically connected to the metal layer 120, so that the first metal mesh 221 and the metal layer 120 form an all-round shielding effect on the atomization cavity 121 in a three-dimensional space, effectively preventing the microwaves in the atomization cavity 121 from leaking out of the housing 110 through the metal layer 120 and the first metal mesh 221, thereby preventing the microwaves leaking out of the housing 110 from radiating to the human body and endangering health, thereby improving the safety of the microwave atomizer 20 and the electronic atomization device 10. In addition, the second metal mesh 222 covers the holes of the gas guide 211 and is electrically connected to the metal layer 120, so that the second metal mesh 222 constitutes another reinforced line of defense against microwave leakage, further preventing microwave leakage.

[0036] The international standard requirement for microwave leakage is that the leakage rate is less than 5 mW / cm2. When the microwave atomizer 20 of the above embodiment was tested, its maximum leakage rate was only 0.32 mW / cm2, which is 15.6 times lower than the international standard.

[0037] The mouthpiece 320 is disposed on the connector 210 and located above the second metal mesh 222. The mouthpiece 320 has a certain filtering function for the smoke, that is, the mouthpiece 320 acts as a filter, filtering harmful atomized smoke and further ensuring the safety of the smoke. When the tobacco product 40 is atomized to produce smoke, the smoke enters the mouthpiece 320 from the atomization chamber 121 through the vents 223 of the first metal mesh 221, the holes of the air guide 211, and the vents 223 of the second metal mesh 222, allowing the user to inhale the smoke from the mouthpiece 320. The mouthpiece 320 can form a detachable connection with the connector 210, for example, the two can be threaded or snap-fitted, so that the mouthpiece 320 can be quickly installed and removed from the connector 210. Of course, the mouthpiece 320 and the connector 210 can also form a non-detachable, integrated connection.

[0038] After the tobacco product 40 is loaded into the atomization chamber 121, the shielding assembly 200 is mounted on the housing 110, and the mouthpiece 320 is mounted on the connector 210. This allows the user to inhale the smoke generated by the atomization of the tobacco product 40 through the mouthpiece 320. After the tobacco product 40 in the atomization chamber 121 is inhaled, the entire shielding assembly 200 can be removed from the housing 110, and the atomization chamber 121 can be reloaded with tobacco for further inhalation.

[0039] In some embodiments, the number of transmission channels 124 can be multiple, for example, the number of transmission channels 124 can be two, and the two transmission channels 124 are respectively recorded as a first transmission channel 125 and a second transmission channel 126. The metal layer 120 has an inner peripheral surface 122 and an inner bottom wall surface 123 that define the boundary of the atomization chamber 121. The inner bottom wall surface 123 is connected to the end of the inner peripheral surface 122 away from the shielding assembly 200. Both the first transmission channel 125 and the second transmission channel 126 have through-holes on the inner peripheral surface 122. The through-hole of the first transmission channel 125 is recorded as the first through-hole 125a, and the through-hole of the second transmission channel 126 is recorded as the second through-hole 126a. The first through-hole 125a and the second through-hole 126a are set at a set angle in the circumferential direction of the atomization chamber 121. The value range of the set angle can be 90° to 180°. For example, the specific value of the set angle can be 90°, 100°, 145° or 180°. In layman's terms, when the first through-hole 125a is located at the leftmost end of the atomizing chamber 121, when the setting angle is 90°, the second through-hole 126a is located at the frontmost or rearmost end of the atomizing chamber 121. Figure 1 At 180°, the second through-opening 126a is located at the rightmost end of the atomizing chamber 121 . At this time, the line connecting the centers of the first through-opening 125a and the second through-opening 126a may intersect with the central axis of the atomizing chamber 121 .

[0040] By arranging the first through-hole 125a and the second through-hole 126a at a set angle in the circumferential direction of the atomizing chamber 121, the microwaves from the first transmission channel 125 and the second transmission channel can basically cover the entire tobacco product 40 in the circumferential direction, ensuring that the microwaves emitted into the atomizing chamber 121 can be as Figure 4 As shown, the tobacco product 40 is evenly covered in the circumferential direction to prevent the tobacco product 40 from having a high temperature in some areas due to the large microwave coverage energy, and to avoid the tobacco product 40 from being burned due to local high temperature, and ultimately eliminate the burnt smell and toxic gases that affect the taste of the smoke and human health.

[0041] The number of transmission channels 124 can also be three, namely, a third transmission channel 127 is added to the first and second transmission channels 125, 126. This third transmission channel 127 penetrates the inner bottom wall 123 and communicates with the atomization chamber 121. Because the microwaves from the first and second transmission channels 125, 126 can cover the sides of the tobacco product 40, while the microwaves from the third transmission channel 127 can cover the bottom of the tobacco product 40, the uniformity of the microwave coverage of the tobacco product 40 within the atomization chamber 121 can be further improved. Of course, the number of transmission channels 124 can also be more than three, depending on actual needs.

[0042] In some embodiments, the number of microwave generating units 310 can be equal to the number of transmission channels 124. In this case, different microwave generating units 310 transmit microwaves into the atomization chamber 121 through different transmission channels 124. In short, the microwave generating units 310 and the transmission channels 124 form a "one-to-one" matching relationship. The number of microwave generating units 310 can also be less than the number of transmission channels 124. In this case, the same microwave generating unit 310 can simultaneously transmit microwaves into the atomization chamber 121 through at least two transmission channels 124. In short, the microwave generating units 310 and the transmission channels 124 can form a "one-to-many" matching relationship. When the number of microwave generating units 310 increases, the microwave energy delivered to the atomization chamber 121 per unit time is greater, resulting in a greater amount of smoke generated by the atomization of the tobacco product 40 per unit time, thereby meeting the user's demand for a large amount of smoke.

[0043] The microwave atomizer 20 may further include three different boost and buck circuits to meet the energy supply requirements of each microwave generating unit 310 .

[0044] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A microwave atomizer, characterized in that: include: The housing comprises an outer shell and a metal layer. The metal layer is enclosed within the outer shell and forms an atomization cavity that is connected to the outside. The atomization cavity is used to accommodate an aerosol-generating substrate and is capable of receiving microwaves. The aerosol-generating substrate generates heat and atomizes to form an aerosol under the action of microwaves. and a shielding assembly, disposed on the housing and covering the atomizing chamber, the shielding assembly being electrically connected to the metal layer to shield microwaves and allow aerosol to pass through; The shielding assembly includes a connector and a metal mesh provided on the connector, the connector being mounted on the housing, the metal mesh being electrically connected to the metal layer and covering the atomization chamber, and the metal mesh being provided with a vent hole penetrating the metal mesh and allowing the aerosol to pass through. The metal mesh includes a first metal mesh and a second metal mesh. The connecting member is provided with an air guide hole connected to the atomization chamber. The first and second metal meshes are spaced apart along the extension direction of the air guide hole and cover the air guide hole. The first metal mesh covers the atomization chamber, and the second metal mesh is further away from the atomization chamber than the first metal mesh. The connecting piece is detachably connected to the housing; The invention also comprises a mouthpiece, which is detachably connected to the shielding assembly. The aerosol in the atomizing chamber enters the mouthpiece through the shielding assembly to be absorbed by the user.

2. The microwave atomizer according to claim 1, characterized in that The shell is made of plastic material.

3. The microwave atomizer according to claim 1, characterized in that The first metal mesh and the second metal mesh are made of the same metal material.

4. The microwave atomizer according to claim 1, characterized in that The first metal mesh and the second metal mesh are made of different metal materials.

5. The microwave atomizer according to claim 1, characterized in that The shell is made of the same metal material as the metal layer.

6. The microwave atomizer according to claim 1, characterized in that The shell is made of non-metallic material.

7. The microwave atomizer according to claim 1, characterized in that The metal layer has an inner circumferential surface that defines a portion of the boundary of the atomization chamber. The metal layer is provided with a first transmission channel and a second transmission channel that penetrates the inner circumferential surface to connect the atomization chamber. The through openings of the first transmission channel and the second transmission channel on the inner circumferential surface are arranged at set angles along the circumference of the atomization chamber.

8. The microwave atomizer according to claim 7, characterized in that The setting angle ranges from 90° to 180°.

9. The microwave atomizer according to claim 7, characterized in that The metal layer also has an inner bottom wall surface that defines a portion of the boundary of the atomization chamber. The inner bottom wall surface is connected to an end of the inner peripheral surface away from the shielding component. The metal layer is also provided with a third transmission channel that passes through the inner bottom wall surface to connect to the atomization chamber.

10. The microwave atomizer according to claim 1, characterized in that The device further comprises a microwave generating unit, wherein the metal layer is provided with a plurality of transmission channels connected to the atomizing cavity for transmitting microwaves. When the number of the microwave generating units is equal to the number of the transmission channels, different microwave generating units transmit microwaves into the atomizing cavity through different transmission channels. When the number of the microwave generating units is less than the number of the transmission channels, the same microwave generating unit can simultaneously emit microwaves into the atomization cavity through at least two of the transmission channels.

11. The microwave atomizer according to claim 10, characterized in that The cross section of the transmission channel is elliptical, racetrack-shaped or regular polygonal.

12. The microwave atomizer according to claim 10, characterized in that The cross section of the transmission channel is circular.

13. An electronic atomization device, characterized in that: The microwave atomizer comprises a power supply and the microwave atomizer according to any one of claims 1 to 12, wherein the power supply is connected to the microwave atomizer.

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