Aerosol generating device and microwave heating assembly thereof

Abstract

The invention relates to an aerosol generating device and a microwave heating assembly thereof, and the microwave heating assembly comprises an outer conductor unit which comprises a closed end, an open end opposite to the closed end, and a cavity formed between the closed end and the open end; an accommodating cavity is formed in the cavity; the inner conductor unit is arranged in the cavity; the inner conductor unit comprises a radiation structure, and the radiation structure is arranged around the periphery of the containing cavity. The aerosol generating device comprises a microwave generating unit and a microwave heating assembly, the microwave heating assembly further comprises a microwave feed-in unit, and the microwave feed-in unit is connected with the microwave generating unit and feeds microwaves generated by the microwave generating unit into the cavity. According to the invention, the mode of circumferentially heating the cavity is adopted, and the radiation structure is arranged around the circumference of the accommodating cavity, so that a circle of relatively uniform strong field area can be formed while the feed-in efficiency of microwaves can be ensured, a microwave field can be focused, rapid heating of an aerosol generating product can be realized, and the atomization efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of aerosol generation, and in particular to an aerosol generating device and a microwave heating component thereof. Background Art

[0002] In the aerosol generating devices of the related art, they usually use traditional heating methods such as conduction and radiation. Microwaves, as a more efficient, three-dimensional heating method with less thermal inertia, have huge room for development in this field. However, to use microwaves to heat aerosol generating products, it is necessary to match a small-sized cavity and a high-density energy field. In the related microwave field, similar scenarios (i.e., the local generation of high-energy-density microwave fields in small sizes) generally occur in microwave plasma excitation. The most widely used is the related deformation structure based on a quarter-wavelength coaxial resonant cavity structure. Similar microwave field distributions are basically concentrated near the single or multiple tip positions of the inner conductor.

[0003] Therefore, it is very important to design the cavity structure to match the shape of the aerosol-generating product in a small cavity. If there is a problem with the cavity matching design, it will directly lead to the inability to feed microwaves or low feeding efficiency. If the microwave field distribution design in the cavity is unreasonable, it will easily lead to poor heating effect of the aerosol-generating product in the cavity, such as slow atomization speed or local burning. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an improved aerosol generating device and a microwave heating component thereof.

[0005] The technical solution adopted by the present invention to solve the technical problem is: construct a microwave heating component for an aerosol generating device, comprising:

[0006] an outer conductor unit, comprising a closed end, an open end opposite to the closed end, and a cavity formed between the closed end and the open end; a receiving cavity for receiving an aerosol generating product is formed in the cavity; and

[0007] an inner conductor unit, which is arranged in the cavity;

[0008] The inner conductor unit includes a radiation structure, and the radiation structure is arranged around the circumference of the receiving cavity.

[0009] In some embodiments, the radiation structure includes a radiation element, and the radiation element is ring-shaped.

[0010] In some embodiments, the radiation structure includes at least two radiation elements, and at least two of the radiation elements are arranged transversely in a circumferential direction of the receiving cavity.

[0011] In some embodiments, a longitudinal section of each of the radiation elements is T-shaped.

[0012] In some embodiments, the radiation element includes a main body portion and an extension portion, the main body portion is extended along an axis parallel to the outer conductor unit, and the cross-section of the main body portion is fan-shaped; the extension portion extends along an arc with a center falling on the axis of the outer conductor unit.

[0013] In some embodiments, the inner conductor unit also includes an inner conductor body, which includes a fixed end and a free end opposite to the fixed end, the fixed end is fixed to the outer conductor unit and is in ohmic contact with the outer conductor unit; the radiating structure is connected to the free end.

[0014] In some embodiments, the inner conductor body includes a first conductor post, which is coaxially fixed to the outer conductor unit and is in ohmic contact with the outer conductor unit.

[0015] In some embodiments, the inner conductor body further includes a conductor disk, one end of which is connected to the first conductor column, the other end of which extends axially toward the outer conductor unit, and an outer diameter of which is greater than an outer diameter of the first conductor column.

[0016] In some embodiments, the inner conductor body further includes at least one second conductor post, and the second conductor post and the first conductor post are fixed to the outer conductor unit at intervals and are in ohmic contact with the outer conductor unit.

[0017] The present invention also constructs an aerosol generating device, including a microwave generating unit and the above-mentioned microwave heating component, wherein the microwave heating component also includes a microwave feeding unit connected to the outer conductor unit, the microwave feeding unit is connected to the microwave generating unit, and feeds the microwave generated by the microwave generating unit into the cavity.

[0018] The implementation of the present invention has the following beneficial effects: the present invention adopts a circumferential heating cavity method, and the radiation structure is arranged around the circumference of the receiving cavity, which can form a circle of relatively uniform strong field area while ensuring the microwave feeding efficiency to focus the microwave field, thereby realizing rapid heating of aerosol-generating products and improving atomization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a microwave heating assembly of the present invention;

[0021] Figure 2is a cross-sectional view of an embodiment of a microwave heating assembly of the present invention;

[0022] Figure 3 yes Figure 2 The microwave heating assembly shown is a schematic structural diagram omitting the outer conductor unit;

[0023] Figure 4 is a cross-sectional view of another embodiment of a microwave heating assembly of the present invention;

[0024] Figure 5 yes Figure 4 The microwave heating assembly shown is a schematic structural diagram omitting the outer conductor unit;

[0025] Figure 6 is a cross-sectional view of another embodiment of a microwave heating assembly of the present invention;

[0026] Figure 7 yes Figure 6 A cross-sectional view of the microwave heating assembly from another perspective;

[0027] Figure 8 yes Figure 6 The microwave heating assembly shown is a schematic structural diagram omitting the outer conductor unit;

[0028] Fig. 9 is a cross-sectional view of yet another embodiment of a microwave heating assembly of the present invention;

[0029] Fig.10 yes Fig. 9 The microwave heating assembly shown is a schematic structural diagram omitting the outer conductor unit;

[0030] Fig.11 yes Figure 2 The microwave energy field distribution diagram of the microwave heating assembly shown;

[0031] Fig.12 yes Figure 4 The microwave energy field distribution diagram of the microwave heating assembly shown;

[0032] Fig.13 yes Fig. 9 The microwave energy field distribution diagram of the microwave heating assembly is shown. DETAILED DESCRIPTION

[0033] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0034] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0035] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0036] Figures 1 to 10 The aerosol generating device of some embodiments of the present invention is shown, which can use microwaves to heat the aerosol generating product 20 to generate aerosol for inhalation by the user. The microwave frequency involved in the present invention is about 2400MHz to 2500MHz.

[0037] like Figure 1As shown, in some embodiments, the aerosol generating device includes a microwave heating component 10 and a microwave generating unit (not shown), a control component (not shown) and a power supply component (not shown). The power supply component is used to provide electrical energy to the microwave heating component 10, the microwave generating unit and the control component. The control component is used to control the operation of the microwave heating component 10 and the microwave generating unit. The microwave generating unit can generate microwave signals and feed microwaves into the microwave heating component 10 by connecting with the microwave heating component 10. The microwave heating component 10 uses microwaves to heat the aerosol generating product 20.

[0038] In some embodiments, the microwave heating component 10 may be substantially cylindrical. Of course, the microwave heating component 10 is not limited to a cylindrical shape, and may also be in other shapes such as a square column, an elliptical column, etc.

[0039] See also Figure 2 and Figure 3 The microwave heating assembly 10 includes an outer conductor unit 1, an inner conductor unit 2 and a microwave feeding unit 3. The outer conductor unit 1 has a closed end 11 and an open end 12 opposite to the closed end 11, and can define a semi-enclosed cavity 13. A receiving cavity 41 for receiving the aerosol generating product 20 is formed in the cavity 13. The outer conductor unit 1 can be made of metal material or other high conductivity materials, and is used to confine microwave energy in the cavity 13. The shape of the outer conductor unit 1 includes but is not limited to a cylinder and a cuboid, and the size of the outer shell can be adjusted according to the size of the aerosol generating product 20.

[0040] In some embodiments, the microwave heating assembly 10 may further include a receiving seat 4, which is fixedly or detachably installed at the open end 12 of the outer conductor unit 1. The receiving seat 4 may be roughly hollow cylindrical, and a receiving cavity 41 may be formed in the receiving seat 4, and the receiving cavity 41 is in the main area where the microwave field is formed.

[0041] The material of the receiving seat 4 may include polymer materials, ceramic materials, metal materials or glass materials. Specifically, polymer materials may include polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), ppsu, pc, ABS, pp, etc.; ceramic materials may include aluminum oxide, zirconium oxide, etc. In practical applications, polymer materials are preferred, which have the advantages of low cost and low thermal conductivity.

[0042] Of course, the receiving seat 4 is not a necessary component in the present invention. The aerosol generating product 20 can also be directly inserted into the cavity 13 from the open end 12 of the outer conductor unit 1. The receiving seat 4 can protect the cavity 13 and the inner conductor body from being contaminated by the mist or as little as possible.

[0043] like Figure 2 , Figure 4, Figure 6 , Figure 7 and Fig. 9 As shown, the outer conductor unit 1 may include a conductor side wall 14 and a conductor end wall 15. The conductor side wall 14 may be cylindrical, and the top of the conductor side wall 14 is open to form the open end 12 of the outer conductor unit 1. The bottom end of the conductor side wall 14 is also open to form the conductor end wall 15 which is integrally sealed at the bottom end of the conductor side wall 14 to form the closed end 11 of the outer conductor unit 1.

[0044] A feeding hole is formed on the conductor side wall 14, and the feeding hole is formed along a direction perpendicular to the central axis of the conductor side wall 14 and straightly penetrates the conductor side wall 14, so as to allow the microwave feeding unit 3 to be inserted into the cavity 13. Of course, the feeding hole can also be formed on the conductor end wall 15, and the microwave feeding unit 3 is inserted into the cavity 13 from the bottom of the microwave heating assembly 10.

[0045] The microwave feeding unit 3 is detachably mounted on the outer conductor unit 1, and is used to feed the microwaves generated by the microwave generating unit into the cavity 13, thereby forming a microwave field in the cavity 13 that can act on the aerosol generating product 20. The microwave field can act on the aerosol generating product 20 to achieve microwave heating thereof.

[0046] One end of the microwave feeding unit 3 is inserted into the cavity 13 from the feeding hole of the outer conductor unit 1, and is in ohmic contact with the inner conductor unit 2. In some embodiments, one side of the microwave feeding unit 3 is connected to the microwave generating device and connected through a coaxial connector or a microstrip line, and the other side extends into the cavity 13 and forms an ohmic contact with the cavity 13. The microwave feeding unit 3 is made of metal material, preferably, it can be made of metal aluminum or copper. Furthermore, its outer surface can be plated with silver or gold. Figure 2 As shown, in some embodiments, the microwave feeding unit 3 includes an inner conductor 31 , an outer conductor 32 , and a dielectric layer 33 between the inner conductor 31 and the outer conductor 32 .

[0047] The outer conductor may be cylindrical, and both ends of the outer conductor are open; during assembly, the outer peripheral side surface of the outer conductor is in ohmic contact with the inner wall surface of the feed-in hole.

[0048] The inner conductor 31 is a straight needle-shaped structure, one end of the inner conductor 31 is a connection end, located inside the outer conductor 32, and used to connect to the microwave generating unit and receive microwaves, and the other end of the inner conductor 31 is a feeding end, located outside the outer conductor 32, and can be inserted into the cavity 13 during assembly, and form a good ohmic contact with the inner conductor unit 2. Of course, the feeding end of the inner conductor 31 is not limited to the ohmic contact with the inner conductor unit 2, and it can also directly form an ohmic contact with the outer conductor unit 1.

[0049] It can be understood that the shape of the inner conductor 31 is not limited to a straight line. The inner conductor 31 may also be L-shaped (not shown). For example, the inner conductor 31 may include a first section perpendicular to the central axis of the cavity 13 and a second section parallel to the central axis of the cavity 13. The first section is partially located in the outer conductor 32 and is integrally connected to one end of the second section. The other end of the second section is arranged outside the outer conductor 32 and is in direct ohmic contact with the conductor end wall 15 of the outer conductor unit 1.

[0050] The inner conductor unit 2 mainly plays the role of microwave conduction. The inner conductor unit 2 is arranged in the cavity 13 of the outer conductor unit 1 and can have good ohmic contact with the outer conductor unit 1, and is used to couple the energy introduced by the microwave feeding unit 3 into the cavity 13. The inner conductor unit 2 includes a radiation structure 21, and the radiation structure 21 is arranged around the circumference of the receiving cavity 41 to adjust the microwave field distribution and resonant frequency of the receiving cavity 41. By adopting the method of heating the cavity 13 in a circumferential manner, a circle of relatively uniform strong field area can be formed within a certain height range of the aerosol generating product 20 while ensuring the feeding efficiency of the microwave, so as to heat the aerosol generating product 20.

[0051] The inner conductor unit 2 also includes an inner conductor body, which is connected to the closed end 11 of the outer conductor unit 1 and is in ohmic contact with the conductor end wall 15, forming a short-circuit end of the microwave heating component 10. The radiation structure 21 is located in the cavity 13, but is not in direct contact with the outer conductor unit 1, forming an open-circuit end of the microwave heating component 10.

[0052] like Figure 3 As shown, the inner conductor body includes a fixed end 221 and a free end 222 opposite to the fixed end 221. The fixed end 221 is fixed to the outer conductor unit 1 and is in ohmic contact with the outer conductor unit 1. The radiation structure 21 can be combined with the free end 222 of the inner conductor body. The end of the inner conductor body away from the open end 12 of the outer conductor unit 1 is the fixed end 221, which can be fixedly connected to the bottom of the outer conductor unit 1; the end of the inner conductor body close to the open end 12 is the free end 222, which extends toward the open end 12 of the outer conductor unit 1.

[0053] The inner conductor body includes a first conductor column 223, which can be cylindrical or polygonal (such as square) in shape. The first conductor column 223 is coaxially arranged with the outer conductor unit 1, fixed on the conductor end wall 15 of the outer conductor unit 1, and in ohmic contact with the outer conductor unit 1.

[0054] The microwave coupling between the inner conductor unit 2 and the microwave feeding unit 3 can be as follows: Figure 2 The direct contact electrical connection shown can also be as follows Figure 4 The electrical coupling method shown, or Figure 6 , Figure 7 and Fig. 9 The magnetic coupling method shown, or other structures that can achieve microwave matching.

[0055] In some embodiments, Figure 2 and Figure 3 As shown, the inner conductor body can be formed by splicing a plurality of cylinders of different shapes. In this embodiment, the inner conductor body includes a first conductor column 223 and a conductor disc 224, one end of the conductor disc 224 can be connected to the first conductor column 223, and the other end of the conductor disc 224 extends axially to the outer conductor unit 1. The conductor disc 224 can be different in shape and / or size from the first conductor column 223. The conductor disc 224 can be coaxially coupled to the top of the first conductor column 223, and the outer diameter of the conductor disc 224 is greater than the outer diameter of the first conductor column 223, and the outer diameter of the conductor disc 224 is smaller than the diameter of the cavity 13. The radial distance from the conductor disc 224 to the inner wall surface of the cavity 13 is much smaller than the radial distance from the first conductor column 223 to the inner wall surface of the cavity 13. It can be understood that in this embodiment, the free end 222 is formed on one end of the conductor disc 224 close to the open end 12. The inner conductor body further includes a connecting portion 225 , through which the conductor disk 224 is connected to the radiation structure 21 . The connecting portion 225 is coupled to an end of the conductor disk 224 close to the opening end 12 .

[0056] In other embodiments, Figure 4 and Figure 5 As shown, the inner conductor body includes a first conductor post 223 and at least one second conductor post 226. The second conductor post 226 and the first conductor post 223 are fixed to the conductor end wall 15 of the outer conductor unit 1 at intervals and are in ohmic contact with the outer conductor unit 1. It can be understood that in this embodiment, the free end 222 is formed on one end of the second conductor post 226 close to the open end 12. In this embodiment, the second conductor post 226 can be in a regular columnar shape, such as a cylindrical shape, a square column shape, etc.

[0057] In some other embodiments, Figures 6 to 8 As shown, the inner conductor body also includes a first conductor post 223 and at least one second conductor post 226. The second conductor post 226 and the first conductor post 223 are fixed to the conductor end wall 15 of the outer conductor unit 1 at intervals and are in ohmic contact with the outer conductor unit 1. Figure 3 What is different from the illustrated embodiment is that the second conductor column 226 may be of an irregular shape, such as a T-shaped column in its longitudinal section; it only needs to meet the requirements of microwave field transmission, and its shape may be changed as required, and no specific limitation is made here.

[0058] The radiation structure 21 is electrically connected to the inner conductor unit 2. Figures 2 to 5As shown, in some embodiments, in order to achieve circumferential heating, the radiation structure 21 may be annular; in order to match the shape of the receiving seat 4, the radiation structure 21 may be annular, used to generate a strong field area in a circumferential shape around the aerosol generating product 20, corresponding to generating a circumferential heating effect on the aerosol generating product 20. It can be understood that the radiation structure 21 at this time includes a radiation element 211, and the radiation element 211 is annular.

[0059] like Figures 6 to 8 As shown, the radiation structure 21 includes at least two radiation elements 211, and the at least two radiation elements 211 are arranged transversely on the circumference of the receiving cavity 41. Specifically, the at least two radiation elements 211 can be arranged transversely along the same horizontal line to form a circle of relatively uniform strong field area for heating the aerosol generating product 20. It can be understood that in this embodiment, the number of radiation elements 211 can be adjusted according to their shape and size, in order to form a circle of relatively uniform strong field area around the receiving cavity 41, so the distance between adjacent radiation elements 211 can also be adjusted according to actual conditions.

[0060] In some embodiments, the longitudinal section of each radiation element 211 is T-shaped. Specifically, the radiation element 211 may include a main body 2111 and an extension 2112, the main body 2111 is extended along an axis parallel to the outer conductor unit 1, and may be combined with the free end 222, and the cross section of the main body 2111 may be fan-shaped. The extension 2112 extends along an arc whose center falls on the axis of the outer conductor unit 1. Among them, the main body 2111 is of course, the shape of the radiation element 211 is not limited to its longitudinal section being T-shaped, and may also be semi-circular, for example, two semi-circular radiation elements 211 are arranged transversely on the circumference of the receiving cavity 41, and a circle of relatively uniform strong field area can also be formed; or a plurality of radiation elements 211 of different shapes can be freely combined to meet the structure that can generate a circumferential strong field around the aerosol generating product 20, and the shape of the radiation element 211 can be changed according to needs, and no specific restrictions are made here.

[0061] Understandably, in order to further focus the microwave field, e.g. Fig. 9 and Fig.10 As shown, in some further embodiments, a ring-shaped radiation element 211 may be arranged side by side in the axial direction of at least two radiation elements 211 with T-shaped longitudinal sections.

[0062] like Figures 11 to 13As shown, the microwave energy field distribution diagrams of some embodiments of the present invention are respectively shown. In this test, the radiation structure 21 is arranged around the circumference of the receiving cavity 41, so that the microwave energy is focused around the aerosol generating product, so that the aerosol generating product 20 is heated evenly, and the aerosol generating product 20 can be quickly heated.

[0063] In summary, the present invention can achieve efficient microwave feeding in a small-sized cavity 13. By setting the radiation structure 21 around the circumference of the receiving cavity 41, a relatively uniform circle of strong field distribution area is formed to focus the microwave field, thereby achieving rapid heating of the aerosol-generating product 20 and improving the atomization efficiency.

[0064] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A microwave heating assembly for an aerosol generating device, characterized in that: include: An outer conductor unit (1) comprising a closed end (11), an open end (12) opposite to the closed end (11), and a cavity (13) formed between the closed end (11) and the open end (12); a receiving cavity (41) for receiving an aerosol generating product (20) is formed in the cavity (13); and An inner conductor unit (2) arranged in the cavity (13); The inner conductor unit (2) comprises a radiation structure (21), and the radiation structure (21) is arranged around the circumference of the receiving cavity (41).

2. The microwave heating assembly according to claim 1, characterized in that: The radiation structure (21) comprises a radiation element (211), and the radiation element (211) is in a ring shape.

3. The microwave heating assembly according to claim 1, characterized in that: The radiation structure (21) comprises at least two radiation elements (211), and the at least two radiation elements (211) are arranged transversely in the circumferential direction of the receiving cavity (41).

4. The microwave heating assembly according to claim 3, characterized in that: The longitudinal section of each radiation element (211) is T-shaped.

5. The microwave heating assembly according to claim 4, characterized in that: The radiation element (211) comprises a main body portion (2111) and an extension portion (2112); the main body portion (2111) is extended along an axis parallel to the outer conductor unit (1), and the cross section of the main body portion (2111) is fan-shaped; the extension portion (2112) extends along an arc whose center falls on the axis of the outer conductor unit (1).

6. The microwave heating assembly according to any one of claims 1 to 5, characterized in that: The inner conductor unit (2) further comprises an inner conductor body, the inner conductor body comprising a fixed end (221) and a free end (222) opposite to the fixed end (221), the fixed end (221) being fixed to the outer conductor unit (1) and in ohmic contact with the outer conductor unit (1); the radiating structure (21) is connected to the free end (222).

7. The microwave heating assembly according to claim 6, characterized in that: The inner conductor body comprises a first conductor column (223), wherein the first conductor column (223) is coaxially fixed to the outer conductor unit (1) and is in ohmic contact with the outer conductor unit (1).

8. The microwave heating assembly according to claim 7, characterized in that: The inner conductor body further comprises a conductor disk (224), one end of the conductor disk (224) being connected to the first conductor post (223), the other end of the conductor disk (224) extending in the axial direction of the outer conductor unit (1), and the outer diameter of the conductor disk (224) being greater than the outer diameter of the first conductor post (223).

9. The microwave heating assembly according to claim 7, characterized in that: The inner conductor body further comprises at least one second conductor post (226), wherein the second conductor post (226) and the first conductor post (223) are fixed to the outer conductor unit (1) at intervals and are in ohmic contact with the outer conductor unit (1).

10. An aerosol generating device, characterized in that: The microwave heating component (10) comprises a microwave generating unit and any one of claims 1 to 9, wherein the microwave heating component (10) further comprises a microwave feeding unit (3) connected to the outer conductor unit (1), wherein the microwave feeding unit (3) is connected to the microwave generating unit and feeds the microwave generated by the microwave generating unit into the cavity (13).

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