Electromagnetic generating apparatus and microwave device

Abstract

Provided in the present application are an electromagnetic generating apparatus and a microwave device. The electromagnetic generating apparatus comprises an anode member and a cathode member, wherein the anode member is enclosed to form a cathode cavity and a resonant cavity in communication with the cathode cavity, with a tuning portion being provided on a cavity wall of the resonant cavity, so as to adjust an electrical size of the resonant cavity by means of the tuning portion; and the cathode member is disposed in the cathode cavity. By means of the electromagnetic generating apparatus provided in the present application, the frequency of electromagnetic waves can be reduced.

Description

Electromagnetic generator and microwave equipment

[0001] This application claims priority to Chinese Patent Application No. CN2024117454378, filed on November 29, 2024, entitled “Electromagnetic Generator and Microwave Equipment”, which is incorporated herein by reference in its entirety. [Technical Field]

[0002] This application relates to the field of microwave device technology, and in particular to an electromagnetic generator and microwave equipment. [Background Technology]

[0003] An electromagnetic generator is a device or component capable of generating electromagnetic waves and is a key component of microwave equipment. When existing microwave equipment is used as a heating device, such as a microwave oven, it needs to output microwave energy of different frequencies to improve the uniformity of heating and defrosting food. However, the minimum electromagnetic wave frequency of the electromagnetic generator in existing microwave ovens is high, resulting in a narrow electromagnetic wave frequency range, which cannot meet the requirements of a wider operating bandwidth for microwave ovens. [Summary of the Invention]

[0004] This application provides an electromagnetic generator and microwave equipment to solve the technical problem that the minimum value of the electromagnetic wave frequency of existing electromagnetic generators is too high.

[0005] To solve the above-mentioned technical problems, this application provides an electromagnetic generating device, which includes an anode and a cathode. The anode surrounds and forms a cathode cavity and a resonant cavity communicating with the cathode cavity. The cavity wall of the resonant cavity is provided with a tuning part to adjust the electrical dimensions of the resonant cavity. The cathode is disposed in the cathode cavity.

[0006] In one embodiment, the tuning section protrudes from the cavity wall of the resonant cavity to form a groove.

[0007] In one embodiment, the anode includes an annular anode, and the resonant cavity includes a plurality of sub-resonant cavities spaced apart circumferentially along the anode, the cavity walls of the sub-resonant cavities being provided with a plurality of grooves.

[0008] In one embodiment, the sub-resonant cavity includes a first inner wall opposite to the cathode cavity and a second inner wall extending from the first inner wall to the cathode cavity, with a groove disposed on the first inner wall.

[0009] In one embodiment, the cavity wall of the sub-resonant cavity is provided with multiple sets of grooves, which are periodically distributed at a first interval.

[0010] In one embodiment, each set of grooves includes at least two grooves, which are periodically distributed at a second interval; the first interval is different from the second interval.

[0011] In one embodiment, the electromagnetic generating device further includes a dielectric material disposed within a groove.

[0012] In one embodiment, the dielectric includes a dielectric whose dielectric constant changes with a control voltage, and the electromagnetic generating device further includes a signal generating circuit electrically connected to the dielectric and configured to generate a control voltage to adjust the dielectric constant of the dielectric.

[0013] In one embodiment, the dielectric includes an electrolyte, and the electromagnetic generating device further includes a dielectric cavity, a piping assembly, and a pumping assembly. The dielectric cavity is disposed in a groove for containing the electrolyte; the piping assembly is in communication with the dielectric cavity; and the pumping assembly is in communication with the piping assembly and configured to output or collect electrolyte into the dielectric cavity to adjust the capacity of the electrolyte in the dielectric cavity.

[0014] To solve the above-mentioned technical problems, this application provides a microwave device, which includes the microwave generating device described above.

[0015] The beneficial effects of this application are as follows: The electromagnetic generating device includes an anode and a cathode. The anode surrounds and forms a cathode cavity and a resonant cavity communicating with the cathode cavity. The cavity wall of the resonant cavity is provided with a tuning section to adjust the electrical dimensions of the resonant cavity. The cathode is disposed inside the cathode cavity. That is, the electromagnetic generating device of this application, by providing a tuning section on the cavity wall of the resonant cavity of the anode, increases the electrical dimensions of the resonant cavity, thereby reducing the electromagnetic wave frequency of the electromagnetic generating device. [Attached Image Description]

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0017] Figure 1 is a schematic diagram of an embodiment of the electromagnetic generating device provided in this application;

[0018] Figure 2 is a cross-sectional structural schematic diagram of the electromagnetic generating device of the embodiment in Figure 1;

[0019] Figure 3 is a structural schematic diagram of an embodiment of the tuning section arrangement provided in this application;

[0020] Figure 4 is a structural schematic diagram of another embodiment of the tuning section arrangement provided in this application;

[0021] Figure 5 is a schematic diagram of another embodiment of the electromagnetic generating device provided in this application.

Detailed Implementation Methods

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] The terms "first" and "second" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0024] An electromagnetic generator is a device or component capable of generating electromagnetic waves, and it is a crucial component of microwave equipment. Existing electromagnetic generators have a narrow electromagnetic wave frequency range, which cannot meet the diverse frequency requirements of microwave equipment equipped with them. For example, when microwave equipment is used as a heating device, such as a microwave oven, it needs to output microwave energy of different frequencies to improve the uniformity of heating and defrosting food, with an operating bandwidth greater than 20MHz. Since the electromagnetic generators in existing microwave ovens operate within the 2440-2460MHz range, they cannot meet the microwave oven's requirement for a wider operating bandwidth.

[0025] To address the aforementioned technical problems, this application provides a microwave device (not labeled in the figures), which includes an electromagnetic generating device. Referring to Figures 1 to 4, Figure 1 is a structural schematic diagram of an embodiment of the electromagnetic generating device provided in this application; Figure 2 is a cross-sectional structural schematic diagram of the electromagnetic generating device of the embodiment of Figure 1; Figure 3 is a structural schematic diagram of an embodiment of the tuning section arrangement provided in this application; and Figure 4 is a structural schematic diagram of another embodiment of the tuning section arrangement provided in this application. The electromagnetic generating device 10 includes an anode 110 and a cathode (not labeled in the figures).

[0026] The anode member 110 surrounds and forms a cathode cavity 112 and a resonant cavity 111 communicating with the cathode cavity 112. The cathode member is disposed within the cathode cavity 112 and spaced apart from the anode member 110. The resonant cavity 111 has a tuning section 113 on its cavity wall. The tuning section 113 increases the surface area of ​​the cavity wall of the resonant cavity 111, thereby increasing the electrical dimensions of the resonant cavity 111. This reduces the electromagnetic wave frequency of the electromagnetic generator 10 and further widens the bandwidth of the electromagnetic wave frequency of the electromagnetic generator 10.

[0027] In one embodiment, the tuning portion 113 protrudes from the cavity wall of the resonant cavity 111 to form a groove (not shown in the figure). It is understood that the groove has a protruding portion (not shown in the figure) and a recessed portion (not shown in the figure). The concave-convex surface design increases the surface area of ​​the cavity wall of the resonant cavity 111, thus increasing the electrical dimensions of the resonant cavity 111. Furthermore, the groove is simple to manufacture and facilitates the machining of the anode component 110.

[0028] In one embodiment, the groove can be a circular groove, a rectangular groove, or other regular shapes that are easy to process; there are no limitations on this.

[0029] In one embodiment, the anode 110 is an annular anode, and the groove may extend along the axial direction X of the anode 110, or along the circumferential direction Y of the anode 110, or the groove may extend at an angle, etc., without limitation.

[0030] In one embodiment, the cavity wall of the resonant cavity 111 is formed with multiple grooves. The dimensions of the multiple grooves can be the same or different, and are not limited herein. In this embodiment, by providing multiple grooves, the electrical dimensions of the resonant cavity 111 are further increased, thereby further reducing the electromagnetic wave frequency of the electromagnetic generator 10.

[0031] In one embodiment, in order to increase the electrical size of the resonant cavity 111 and reduce the electromagnetic wave frequency of the electromagnetic generator 10, the anode 110 is an annular anode 110, and the cavity wall of the resonant cavity 111 is provided with multiple grooves. The multiple grooves can be arranged along the axial direction X of the anode 110 or along the circumferential direction Y of the anode 110, which is not limited here.

[0032] In one embodiment, the anode 110 includes an annular anode 110, and the resonant cavity 111 includes a plurality of sub-resonant cavities (see reference numeral 111) spaced Y-spaced along the circumference of the anode 110. The cavity walls of the sub-resonant cavities are provided with a plurality of grooves. That is, in each sub-resonant cavity, the cavity wall is provided with a plurality of grooves, so as to reduce the electromagnetic wave frequency of the electromagnetic generating device 10 by increasing the electrical size of each sub-resonant cavity.

[0033] In one embodiment, the sub-resonant cavity includes a first inner wall 114 opposite to the cathode cavity 112 and a second inner wall 115 extending from the first inner wall 114 to the cathode cavity 112, with a groove disposed on the first inner wall 114. Specifically, the cathode cavity 112 is located at the middle position of the anode member 110, and the inner wall of the anode member 110 is recessed to form a plurality of spaced sub-resonant cavities. The inner wall of the sub-resonant cavity opposite to the cathode cavity 112 is the first inner wall 114, and the inner wall extending from the first inner wall 114 to the cathode cavity 112 is the second inner wall 115. In this embodiment, the groove is disposed on the first inner wall 114, that is, in this embodiment, the electrical size of the resonant cavity 111 is increased by increasing the resonant inductance, while keeping the resonant capacitance unchanged, which can reduce the electromagnetic wave frequency of the electromagnetic generator 10.

[0034] In one embodiment, the cavity wall of the sub-resonant cavity is provided with multiple sets of grooves, which are distributed at a first interval period. For example, depending on the application scenario, the spacing between the multiple sets of grooves can be a few tenths of a millimeter or a few centimeters. For example, when the operating frequency range of the electromagnetic generator is 2400-2500MHz, the spacing between the multiple sets of grooves can be from a few tenths of a millimeter to a few millimeters. The first interval period can be determined based on the circumferential Y-axis dimension of the first inner sidewall 114, the minimum electromagnetic wave frequency required for the electromagnetic generator 10, etc., and is not limited here. For example, each sub-resonant cavity has three sets of grooves on its cavity wall, which are distributed at 5-centimeter intervals along the circumferential Y-axis of the anode member 110 on the first inner sidewall 114 of the sub-resonant cavity.

[0035] In this embodiment, the cavity wall of the sub-resonant cavity is provided with multiple sets of grooves, which increase the electrical dimensions of the resonant cavity 111. In addition, the multiple sets of grooves are distributed periodically at a first interval, making the electrical dimensions of the resonant cavity 111 more accurate, so as to obtain the minimum electromagnetic wave frequency of the desired electromagnetic generator 10.

[0036] In one embodiment, each group of grooves includes at least two grooves, and the at least two grooves are periodically distributed at a second interval. The first interval is different from the second interval. For example, the first inner sidewall 114 is provided with three groups of grooves, each group of grooves including four grooves. Specifically, the three groups of grooves are arranged along the circumferential Y direction of the anode member 110 at 0.3 mm intervals, and the four grooves within each group are arranged along the circumferential Y direction of the anode member 110 at 2 mm intervals; or the three groups of grooves are arranged along the axial X direction of the anode member 110 at 2 mm intervals, and the four grooves within each group are arranged along the circumferential Y direction of the anode member 110 at 0.3 mm intervals; or the three groups of grooves are arranged along the circumferential Y direction of the anode member 110 at 5 mm intervals, and the four grooves within each group are arranged along the axial X direction of the anode member 110 at 2 mm intervals; or the three groups of grooves are arranged along the circumferential Y direction of the anode member 110 at 5 mm intervals, and the four grooves within each group are arranged along the circumferential Y direction of the anode member 110 at 2 mm intervals, etc.

[0037] In one embodiment, the interval between the protrusions of two adjacent grooves includes 0.1mm-100mm, for example, 0.1mm, 0.5mm, 1mm, 15mm, 19mm, 23mm, 60mm, 85mm, etc.

[0038] In one embodiment, along the axial direction Z of the anode 110, the dimensions of the protrusions and recesses of the groove are the same as the dimensions of the anode 110, making the anode 110 easy to process.

[0039] In one embodiment, the tuning unit 113 includes a plurality of metal parts (not shown in the figure). The metal parts are connected to the cavity wall of the resonant cavity 111. The plurality of metal parts are arranged along the circumferential Y direction of the anode part 110 at a first interval or a second interval. The metal parts and the anode part 110 are integrally formed. In other embodiments, the metal parts can be regarded as the protrusions of the groove, and the intervals between the metal parts can be regarded as the recesses of the groove. Therefore, the arrangement of the plurality of metal parts can refer to the arrangement of the groove described above, and will not be repeated here.

[0040] In one embodiment, the electromagnetic generating device 10 further includes a dielectric (not shown in the figure), which is disposed within a groove, or in a recessed portion of the cavity wall of the resonant cavity 111, such as a recessed portion of the first inner sidewall, a recessed portion between adjacent grooves, and a recessed portion of the groove itself. The dielectric is insulated from the anode element 110; for example, an insulating layer is disposed between the dielectric and the anode element 110. It is known that the dielectric constant of the dielectric is greater than that of air; therefore, the dielectric can increase the resonant capacitance of the resonant cavity 111. That is, in this embodiment, by adding a dielectric within the groove, the electromagnetic wave frequency of the electromagnetic generating device 10 can be further reduced. The dielectric constants of the dielectrics in different grooves can be the same or different, and this is not limited here.

[0041] In one embodiment, the dielectric includes a dielectric whose dielectric constant changes with the control voltage. The electromagnetic generator 10 also includes a signal generation circuit (not shown in the figure), which is electrically connected to the dielectric. The signal generation circuit is configured to generate a control voltage to adjust the dielectric constant of the dielectric. In this embodiment, the electromagnetic generator 10, by setting up a signal generation circuit, generates control voltages of different values ​​to change the dielectric constant of the dielectric, thereby dynamically adjusting the electromagnetic wave frequency of the electromagnetic generator 10. Furthermore, compared to existing mechanical adjustment methods, such as using a rotating device to rotate rotating blades to change the electromagnetic wave frequency of the electromagnetic generator 10, the internal temperature of the electromagnetic generator 10 during operation is high, leading to thermal expansion of the metal structure and difficulty in lubrication, causing the rotating device to easily wear out and resulting in operational failure. In this embodiment, by using a signal generation circuit to generate a control voltage to change the electromagnetic wave frequency of the electromagnetic generator 10, the heat generated by the electromagnetic generator 10 has almost no impact on the signal generation circuit. Therefore, the electromagnetic generator 10 of this application has strong operational stability and can extend its service life.

[0042] In other embodiments, the signal generation circuit may also be the signal generation circuit of a microwave device.

[0043] For example, when the dielectric constant is 10, the electromagnetic wave frequency of the electromagnetic generator 10 is 2.483 GHz; when the dielectric constant is 35, the electromagnetic wave frequency of the electromagnetic generator 10 is 2.416 GHz.

[0044] In one embodiment, the dielectric material is a phase change material. When a voltage is applied to the dielectric, its dielectric constant changes. This change in dielectric constant alters the spacing between the grooves and the dimensions of the recessed portions of the grooves, thereby changing the electrical dimensions of the resonant cavity 111 and consequently altering the electromagnetic wave frequency of the electromagnetic generator 10. The speed and period of the control voltage's adjustment of the dielectric constant determine the speed and period of the electromagnetic generator 10.

[0045] In one embodiment, the dielectric includes an electrolyte. Referring to FIG5, the electromagnetic generating device 10 further includes a dielectric cavity 121, which is disposed in the groove and is used to contain the electrolyte. The capacity of the electrolyte in different dielectric cavities 121 may be the same or different, and is not limited herein. The electrolyte may be a high-temperature stable electrolyte, meaning that the electrolyte will not decompose or react with the dielectric cavity under high-temperature conditions.

[0046] In this embodiment, the dielectric is an electrolyte. The electromagnetic generator 10 also includes a dielectric cavity 121, which is disposed in the groove and is used to contain the electrolyte. The electrolyte can change the capacitance value of the resonant capacitor without the electromagnetic generator 10 providing external conditions, making the structure of the electromagnetic generator 10 simple and easy to implement.

[0047] In one embodiment, the dielectric includes multiple electrolytes with different dielectric constants. Different dielectric cavities 121 can contain one electrolyte, or multiple different electrolytes. When multiple different electrolytes are contained within the dielectric cavity 121, this can be achieved by providing multiple isolated sub-dielectric cavities, or by ensuring that the multiple electrolytes are immiscible and do not react with each other at high temperatures; this is not limited to these specific embodiments.

[0048] The dielectric in this embodiment includes a variety of electrolytes with different dielectric constants. Different electrolytes can be set in different dielectric cavities 121 or in the same dielectric cavity 121, which can accurately change the actual dielectric constant of the resonant capacitor, thereby further reducing the electromagnetic wave frequency of the electromagnetic generator 10.

[0049] In one embodiment, the electromagnetic generator 10 further includes a piping assembly 122 and a pumping assembly 123. The piping assembly 122 is connected to both the medium cavity 121 and the pumping assembly 123, serving as the medium for the electrolyte to enter and exit the medium cavity 121. The pumping assembly 123 is connected to the piping assembly 122 and configured to supply or collect electrolyte to the medium cavity 121. Thus, the pumping assembly 123 provides the power for the electrolyte to enter and exit the medium cavity 121. Therefore, the capacity of the electrolyte in the medium cavity 121 can be adjusted, meaning the resonant capacitance of the electromagnetic generator 10 can be dynamically adjusted, thereby enabling the electromagnetic wave frequency of the electromagnetic generator 10 to be adjustable. For example, when the capacity of the electrolyte in the dielectric cavity 121 is 0, the equivalent dielectric constant of the resonant capacitor is ε1, and the electromagnetic wave frequency of the electromagnetic generator 10 is f1; when the capacity of the electrolyte in the dielectric cavity 121 is V1, the equivalent dielectric constant of the resonant capacitor is ε2, and the electromagnetic wave frequency of the electromagnetic generator 10 is f2; when the capacity of the electrolyte in the dielectric cavity 121 is V2, the equivalent dielectric constant of the resonant capacitor is ε3, and the electromagnetic wave frequency of the electromagnetic generator 10 is f3; wherein, V1 and V2 can be the height of the dielectric cavity 121; or V1 and V2 can be the length of the dielectric cavity 121; or V1 and V2 can be the width of the dielectric cavity 121, which is not limited here.

[0050] In this embodiment, the electromagnetic generator 10, by setting up the piping assembly 122 and the pumping assembly 123, can dynamically adjust the resonant capacitance of the resonant cavity 111, making the electromagnetic wave frequency of the electromagnetic generator 10 adjustable. Furthermore, compared to existing mechanical adjustment methods, such as using a rotating device to rotate the blades to change the electromagnetic wave frequency of the electromagnetic generator 10, the internal temperature of the electromagnetic generator 10 during operation is high, leading to thermal expansion of the metal structure and difficulties in lubrication, causing the rotating device to easily wear out and malfunction. In this embodiment, the pumping assembly 123 is used to adjust the electromagnetic wave frequency of the electromagnetic generator 10. The heat generated by the electromagnetic generator 10 has a smaller impact on the pumping assembly 123. Therefore, the electromagnetic generator 10 of this application has strong operational stability and can extend its service life.

[0051] In one embodiment, the electromagnetic generator 10 further includes a housing 130, wherein the anode 110, cathode 110, etc., are disposed inside the housing 130, and the pumping assembly 123 is disposed outside the housing 130. The housing 130 provides a vacuum seal for the resonant cavity 111 and the cathode cavity 112, ensuring the normal operation of the electromagnetic generator 10. The pumping assembly 123 is disposed outside the housing 130, ensuring that the pumping assembly 123 can operate normally and is not affected by the internal environment of the housing 130, thus ensuring the operational stability of the electromagnetic generator 10.

[0052] In one embodiment, the conduit assembly 122 includes a quartz tube. A quartz tube is a tube made of quartz material. Quartz tubes are characterized by their resistance to high temperatures and high pressures. When the electromagnetic generator 10 is operating, the anode 110 is in a high-temperature state. Including a quartz tube in the conduit assembly 122 can improve the stability of the electromagnetic generator 10. It is worth noting that the portion of the tube body in the conduit assembly 122 located outside the housing 130 has a shielding layer (not shown in the figure) on its surface. This shielding layer can prevent microwave energy leakage. For example, the shielding layer can be a metal cladding, which is not limited here.

[0053] In one embodiment, the pumping assembly 123 includes a hydraulic pump, which is a conventional hydraulic pump, and can reduce the hardware development cycle of the pumping assembly 123.

[0054] In one embodiment, the electromagnetic generator 10 further includes a control circuit (not shown) electrically connected to the pumping assembly 123 and configured to generate control parameters for the pumping assembly 123 to adjust the electrolyte delivery cycle or speed. In other embodiments, the control circuit may also be the control circuit of a microwave device, and this is not a limitation.

[0055] In one embodiment, the microwave device can be an electromagnetic heating device. For example, the microwave heating device can be a microwave oven, microwave steam oven, microwave fryer, microwave rice steamer, microwave stove, or other microwave heating devices, and is not limited thereto. The microwave device can also be a radar system, etc., and is not limited thereto.

[0056] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An electromagnetic generator, characterized in that, include: An anode component is provided to enclose a cathode cavity and a resonant cavity communicating with the cathode cavity. The cavity wall of the resonant cavity is provided with a tuning section to adjust the electrical dimensions of the resonant cavity through the tuning section. A cathode element is disposed within the cathode cavity.

2. The electromagnetic generating device according to claim 1, characterized in that, The tuning section protrudes from the cavity wall of the resonant cavity to form a groove.

3. The electromagnetic generator according to claim 2, characterized in that, The anode includes an annular anode, and the resonant cavity includes a plurality of sub-resonant cavities spaced circumferentially along the anode, the cavity walls of the sub-resonant cavities being provided with a plurality of grooves.

4. The electromagnetic generating device according to claim 3, characterized in that, The sub-resonant cavity includes a first inner wall opposite to the cathode cavity and a second inner wall extending from the first inner wall to the cathode cavity, and the groove is disposed on the first inner wall.

5. The electromagnetic generator according to claim 3, characterized in that, The cavity wall of the sub-resonant cavity is provided with multiple sets of grooves, and the multiple sets of grooves are periodically distributed at a first interval.

6. The electromagnetic generator according to claim 5, characterized in that, Each group of grooves includes at least two grooves, the at least two grooves being periodically distributed at a second interval; The first interval is different from the second interval.

7. The electromagnetic generating device according to any one of claims 2-6, characterized in that, The electromagnetic generating device also includes: A dielectric material is disposed within the groove.

8. The electromagnetic generating device according to claim 7, characterized in that, The dielectric includes a dielectric whose dielectric constant changes with the control voltage, and the electromagnetic generating device further includes: A signal generation circuit, electrically connected to the dielectric, is configured to generate the control voltage to adjust the dielectric constant of the dielectric.

9. The electromagnetic generating device according to claim 7, characterized in that, The dielectric includes an electrolyte, and the electromagnetic generator further includes: A dielectric cavity, located in the groove, is used to contain the electrolyte; Piping assembly, in communication with the medium cavity; A pumping assembly, connected to the piping assembly, is configured to output or collect the electrolyte into the medium cavity to adjust the capacity of the electrolyte in the medium cavity.

10. A microwave device, characterized in that, include: The electromagnetic generating device according to any one of claims 1-9.

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