Electromagnetic generation device and microwave equipment

Abstract

The invention provides an electromagnetic generation device and microwave equipment. The electromagnetic generation device comprises an anode piece, a tuning assembly and a cathode piece, wherein the anode piece is provided with a plurality of resonant cavities; the tuning assembly comprises at least one dielectric cavity, the at least one resonant cavity is internally provided with a dielectric cavity, and the dielectric cavity is configured to accommodate a dielectric medium, so that the dielectric constant of the resonant cavity is adjusted through the dielectric medium to change the electrical size of the resonant cavity, and the electromagnetic wave frequency of the electromagnetic generation device is adjusted; the cathode pieces and the anode pieces are arranged at intervals. The electromagnetic generation device provided by the invention can expand the electromagnetic wave frequency range.

Description

Technical Field

[0001] The present application relates to the technical field of microwave devices, and in particular to an electromagnetic generating device and a microwave equipment. Background Art

[0002] An electromagnetic generator is a device or component that can generate electromagnetic waves and is the main component of a microwave device. Existing microwave devices, such as microwave ovens, are used as heating devices. In order to improve the uniformity of heating and thawing food, microwave ovens need to output microwave energy of different frequencies. However, the minimum electromagnetic wave frequency of the electromagnetic generator of an existing microwave oven is high, resulting in a narrow electromagnetic wave frequency range, which cannot meet the demand for a larger working bandwidth of the microwave oven. Summary of the invention

[0003] The present application provides an electromagnetic generating device and a microwave device to solve the technical problem that the minimum value of the electromagnetic wave frequency of the existing electromagnetic generating device is too high.

[0004] In order to solve the above technical problems, the present application provides an electromagnetic generating device, which includes an anode component, a tuning component and a cathode component, wherein the anode component is provided with multiple resonant cavities; the tuning component includes at least one dielectric cavity, and at least one resonant cavity is provided with a dielectric cavity, and the dielectric cavity is configured to accommodate a dielectric so as to adjust the equivalent dielectric constant in the resonant cavity through the dielectric, thereby adjusting the electromagnetic wave frequency of the electromagnetic generating device; the cathode component and the anode component are arranged at intervals.

[0005] In one embodiment, the tuning component further comprises a dielectric, and the dielectric comprises a liquid dielectric.

[0006] In one embodiment, the tuning component further includes a pipeline component and a pumping component, wherein the pipeline component is connected to the medium cavity; the pumping component is connected to the pipeline and is configured to output or collect liquid dielectric to the medium cavity to adjust the capacity of the liquid dielectric in the medium cavity.

[0007] In one embodiment, the resonant cavity penetrates through the two end surfaces of the anode member spaced apart along the first direction along the first direction; the pipeline assembly includes a main pipeline and a branch pipeline, the main pipeline is arranged outside the resonant cavity and close to the end surface, wherein the main pipeline is connected to the pumping assembly; the branch pipeline is connected to the main pipeline and extends into the resonant cavity along the first direction to communicate with the medium cavity.

[0008] In one embodiment, the pipeline assembly includes two main pipelines, two ends of the branch pipeline are respectively connected to the two main pipelines, and the two main pipelines are respectively arranged on the two end surfaces.

[0009] In one embodiment, the electromagnetic generating device further comprises a shell, the anode component, the cathode component and the medium chamber are arranged inside the shell, and the main pipeline and the pumping assembly are arranged outside the shell.

[0010] In one embodiment, the liquid dielectric includes a plurality of liquid dielectrics having different dielectric constants and being insoluble in each other.

[0011] In one embodiment, the tuning component includes a plurality of dielectric cavities, and the plurality of dielectric cavities are arranged in a one-to-one correspondence with the resonant cavity.

[0012] In one embodiment, the tubing assembly includes a quartz tube.

[0013] In order to solve the above technical problems, the present application provides a microwave device, which includes the above microwave generating device.

[0014] In one embodiment, the microwave device further comprises a control circuit, which is electrically connected to a pumping component of the electromagnetic generating device and is configured to generate control parameters of the pumping component to adjust a delivery period or speed of the liquid dielectric.

[0015] The beneficial effects of the present application are as follows: the electromagnetic generating device includes an anode component, a tuning component and a cathode component, the anode component is provided with a plurality of resonant cavities; the tuning component includes at least one dielectric cavity, at least one resonant cavity is provided with a dielectric cavity, the dielectric cavity is configured to accommodate a dielectric, so as to adjust the equivalent dielectric constant of the resonant cavity through the dielectric, so as to adjust the electromagnetic wave frequency of the electromagnetic generating device; the cathode component and the anode component are arranged at intervals. That is, when the electromagnetic generating device of the present application is working, since at least one resonant cavity is provided with a dielectric cavity for accommodating a dielectric, the resonant capacitance of the resonant cavity can be adjusted by the dielectric of the dielectric cavity, and since the dielectric constant of air is approximately 1 relative to vacuum, therefore, when the dielectric constant of the dielectric is greater than the dielectric constant of air, a dielectric cavity is arranged in the resonant cavity, and the resonant capacitance of the resonant cavity can be increased by the dielectric in the dielectric cavity, thereby reducing the electromagnetic wave frequency of the electromagnetic generating device, and further widening the bandwidth of the electromagnetic wave frequency of the electromagnetic generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a structural schematic diagram of a first view of an embodiment of an electromagnetic generating device provided by the present application;

[0018] Figure 2 It is a structural schematic diagram of a second view of an embodiment of an electromagnetic generating device provided by the present application;

[0019] Figure 3 It is a structural schematic diagram of the third view of an embodiment of the electromagnetic generating device provided in the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0023] An electromagnetic generator is a device or component that can generate electromagnetic waves, and an electromagnetic generator is an important component of a microwave device. The minimum value of the electromagnetic wave frequency of an existing electromagnetic generator is too high, resulting in a narrow frequency range of the electromagnetic wave of the electromagnetic generator, which cannot meet the needs of microwave devices equipped with electromagnetic generators for different electromagnetic wave frequencies. For example, when a microwave device is used as a heating device, such as a microwave oven, in order to improve the uniformity of heating and thawing food, the microwave oven needs to output microwave energy of different frequencies, and the working frequency bandwidth must be greater than 20MHz. Since the electromagnetic wave frequency of the electromagnetic generator of an existing microwave oven is in the range of 2440-2460MHz, it cannot meet the needs of a larger working bandwidth of the microwave oven.

[0024] In order to solve the above technical problems, the present application provides a microwave device, which includes an electromagnetic generating device. Figures 1 to 3 , Figure 1 is a structural schematic diagram of a first view of an embodiment of an electromagnetic generating device provided by the present application, Figure 2 It is a structural schematic diagram of a second view of an embodiment of an electromagnetic generating device provided by the present application; Figure 31 is a schematic structural diagram of the third view of an embodiment of an electromagnetic generating device provided by the present application. The electromagnetic generating device 10 comprises an anode member 110, a tuning assembly 120 and a cathode member (not marked in the figure).

[0025] The anode member 110 is provided with a plurality of resonant cavities 111. The anode member 110 may be a common anode member 110, for example, the anode member 110 is an annular anode member, and the anode member 110 is provided with two end surfaces (not marked in the figure) spaced apart along a first direction (not marked in the figure), and a cathode cavity 112 and a plurality of resonant cavities 111 connected to the cathode cavity 112 are formed inside the anode member 110, wherein the inner wall of the anode member 110 is recessed along the radial outer side of the anode member 110 to form a plurality of resonant cavities 111 spaced apart. The cathode member is provided in the cathode cavity 112 and spaced apart from the anode member 110. The first direction is parallel to the axial direction of the annular anode member.

[0026] The tuning component 120 includes at least one dielectric cavity 121, and the dielectric cavity 121 is configured to accommodate a dielectric (not marked in the figure). A dielectric is a type of material that can be polarized under the action of an electric field. When the electromagnetic generating device 10 is working, since at least one resonant cavity 111 is provided with a dielectric cavity 121 for accommodating a dielectric, the equivalent dielectric constant of the resonant cavity 111 is changed by the dielectric in the dielectric cavity, thereby changing the electrical size of the resonant cavity, and further changing the electromagnetic wave frequency of the electromagnetic generating device 10. Among them, since the dielectric constant of air is approximately 1 relative to a vacuum, the dielectric constant of the dielectric is greater than the dielectric constant of air. Therefore, the provision of the dielectric cavity 121 in the resonant cavity 111 of the present application can reduce the electromagnetic wave frequency of the electromagnetic generating device 10, thereby expanding the electromagnetic wave frequency range of the electromagnetic generating device 10, and further widening the bandwidth of the electromagnetic wave frequency of the electromagnetic generating device 10.

[0027] In one embodiment, the tuning component 120 further includes a dielectric, and the dielectric includes a liquid dielectric. The capacity of the liquid dielectric in each dielectric cavity 121 may be the same or different, and is not limited here. The liquid dielectric may be a liquid dielectric with high temperature stability, and the stability means that the liquid dielectric will not decompose under high temperature conditions, or will not react with the dielectric cavity 121, etc.

[0028] The tuning component 120 of this embodiment also includes a dielectric, and the dielectric is a liquid dielectric. The liquid dielectric can change the equivalent dielectric constant in the resonant cavity without the electromagnetic generating device 10 providing any external conditions, thereby changing the electrical dimensions of the resonant cavity, making the structure of the electromagnetic generating device 10 simple and easy to implement.

[0029] In one embodiment, the tuning component 120 includes a plurality of liquid dielectrics with different dielectric constants. Different dielectric cavities 121 can contain a liquid dielectric, or the dielectric cavity 121 can contain a plurality of different liquid dielectrics. Wherein, when the dielectric cavity 121 contains a plurality of different liquid dielectrics, it can be achieved by providing a plurality of isolated sub-dielectric cavities 121, or the plurality of liquid dielectrics are insoluble in each other and do not react with each other at high temperature, which is not limited here.

[0030] The tuning component 120 of this embodiment includes a plurality of liquid dielectrics with different dielectric constants. Different liquid dielectrics can be arranged in different dielectric cavities 121 or in the same dielectric cavity 121, so as to accurately change the equivalent dielectric constant in the resonant cavity, and then change the electrical size of the resonant cavity, thereby further reducing the electromagnetic wave frequency of the electromagnetic generating device 10.

[0031] In one implementation, the tuning component 120 includes a plurality of dielectric cavities 121, and the plurality of dielectric cavities 121 are arranged in a one-to-one correspondence with the plurality of resonant cavities 111. That is, a dielectric cavity 121 is arranged in each resonant cavity 111, so that the equivalent dielectric constant of the resonant cavity is further changed by increasing the number of dielectric cavities 121, thereby further expanding the range of the electromagnetic wave frequency of the electromagnetic generating device 10.

[0032] In other embodiments, a resonant cavity 111 may be provided with a plurality of dielectric cavities 121, for example, a resonant cavity 111 may be provided with 1, 2, 3, etc., which is not limited here. Alternatively, a dielectric cavity 121 may include a plurality of sub-dielectric cavities 121, for example, sub-dielectric cavities 121 that are not connected to each other are provided in the same dielectric cavity 121. This is not limited here. Alternatively, the dielectric cavities 121 may be periodically distributed in the resonant cavity 111, for example, the anode member 110 includes 8 resonant cavities 111, the tuning assembly 120 includes 4 dielectric cavities 121, and the 4 dielectric cavities 121 are provided in the 8 resonant cavities 111 in a manner of one resonant cavity 111 apart.

[0033] In one embodiment, the tuning component 120 further includes a pipeline component 123 and a pumping component 122. The pipeline component 123 is connected to the medium cavity 121 and the pumping component 122 respectively, that is, the pipeline component 123 serves as a medium for the liquid dielectric to enter and exit the medium cavity 121. The pumping component 122 is connected to the pipeline component 123 and is configured to output or collect the liquid dielectric to the medium cavity 121. That is, the pumping component 122 provides power for the liquid dielectric to enter and exit the medium cavity 121, so that the capacity of the liquid dielectric in the medium cavity 121 can be adjusted, that is, the resonant capacitance of the electromagnetic generating device 10 can be dynamically adjusted, thereby realizing that the electromagnetic wave frequency of the electromagnetic generating device 10 is adjustable. For example, when the capacity of the liquid dielectric 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 generating device 10 is f1; when the capacity of the liquid dielectric 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 generating device 10 is f2; when the capacity of the liquid dielectric 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 generating device 10 is f3; wherein V1 and V2 may be the height of the dielectric cavity 121; or V1 and V2 may be the length of the dielectric cavity 121; or V1 and V2 may be the width of the dielectric cavity 121, which is not limited here.

[0034] The tuning component 120 of this embodiment can dynamically adjust the resonant capacitance of the electromagnetic generating device 10 by setting the pipeline component 123 and the pumping component 122, so that the electromagnetic wave frequency of the electromagnetic generating device 10 is adjustable. In addition, compared with the existing mechanical method, such as using a rotating device to rotate the rotating blades to change the electromagnetic wave frequency of the electromagnetic generating device 10, since the electromagnetic generating device 10 is in a high temperature state when working, the metal structure expands thermally and lubrication is difficult, and the rotating device is easily worn, causing the working state to fail. In this embodiment, the pumping component 122 is used as a method to change the electromagnetic wave frequency of the electromagnetic generating device 10, and the heating of the electromagnetic generating device 10 has little effect on the pumping component 122. Therefore, the electromagnetic generating device 10 of the present application can extend the service life.

[0035] In one embodiment, the anode member 110 is provided with two end faces spaced apart along the first direction, wherein the resonance cavity 111 penetrates through the two end faces of the anode member 110 along the first direction. The pipeline assembly 123 includes a main pipeline 1231 and a branch pipeline 1232. The main pipeline 1231 is communicated with the pumping assembly 122 and the branch pipeline 1232 respectively, and the main pipeline 1231 is arranged outside the resonance cavity 111 and is arranged close to the end face of the anode member 110. The branch pipeline 1232 extends into the resonance cavity 111 along the first direction and is communicated with the dielectric cavity 121. In this embodiment, by providing the branch pipeline 1232 to be connected with at least one dielectric cavity 121, and the branch pipeline 1232 extends along the first direction, and the main pipeline 1231 is arranged at the end face of the anode member 110, the volume of the electromagnetic generating device 10 perpendicular to the second direction can be reduced, so that the electromagnetic generating device 10 can be adapted to small equipment. In addition, the branch pipe 1232 is arranged along the first direction, which can speed up the speed of the liquid dielectric entering and exiting the dielectric cavity 121, thereby realizing rapid adjustment of the electromagnetic wave frequency of the electromagnetic generating device 10.

[0036] In one embodiment, the pipeline assembly 123 includes two main pipelines 1231, and the two ends of the branch pipeline 1232 are respectively connected to the two main pipelines 1231, and the two main pipelines 1231 are respectively arranged at the two end surfaces of the anode member 110. That is, along the first direction of the anode member 110, the main pipeline 1231-branch pipeline 1232-main pipeline 1231 are arranged in sequence. In this embodiment, two main pipelines 1231 connected to the two ends of the branch pipeline 1232 are arranged, and the liquid dielectric can enter the medium cavity 121 from one end of the branch pipeline 1232 and exit the medium cavity 121 from the other end; or the liquid dielectric can enter from both ends and exit from both ends. It is not limited here.

[0037] In this embodiment, two main pipes 1231 are arranged to communicate with the branch pipes 1232 , which can speed up the speed of the liquid dielectric entering and exiting the dielectric cavity 121 , and can speed up the speed of regulating the electromagnetic wave frequency of the electromagnetic generating device 10 .

[0038] In one embodiment, the pipeline assembly 123 includes a quartz pipe. The quartz pipe refers to a pipe made of quartz material. The quartz pipe has the characteristics of high temperature and high pressure resistance. When the electromagnetic generating device 10 is in a high temperature state, the pipeline assembly 123 includes a quartz pipe to improve the stability of the electromagnetic generating device 10. For example, the main pipeline 1231 of the pipeline assembly 123 is a quartz pipe, or the branch pipeline 1232 of the pipeline assembly 123 is a quartz pipe, or the main pipeline 1231 and the branch pipeline 1232 are both quartz pipes.

[0039] In one embodiment, the electromagnetic generating device 10 further includes a shell 130, wherein the anode member 110, the cathode member and the dielectric cavity 121 are arranged in the shell 130, the main pipeline 1231 and the pumping assembly 122 are arranged outside the shell 130, and the branch pipeline 1232 is at least partially arranged in the shell 130. The shell 130 performs vacuum sealing on the resonant cavity 111 and the cathode cavity 112 to ensure the normal operation of the electromagnetic generating device 10. The main pipeline 1231 and the pumping assembly 122 are arranged outside the shell 130, which can ensure that the pumping assembly 122 can work normally and is not affected by the internal environment of the shell 130, thereby ensuring the working stability of the electromagnetic generating device 10. It is worth noting that a shielding layer (not marked in the figure) is provided on the surface of the main pipeline 1231 and the branch pipeline 1232 located outside the shell 130, and the shielding layer can prevent microwave energy from leaking. For example, the shielding layer can be a metal coating, which is not limited here.

[0040] In one embodiment, the pumping component 122 includes a hydraulic pump, which is a conventional hydraulic pump, and can reduce the hardware development cycle of the pumping component 122 .

[0041] In one embodiment, the electromagnetic generating device 10 further includes a control circuit (not shown), which is electrically connected to the pumping assembly 122 and configured to generate control parameters of the pumping assembly 122 to adjust the delivery cycle or speed of the liquid dielectric. In other embodiments, the control circuit may also be a control circuit of an electromagnetic device, which is not limited here.

[0042] In one embodiment, at least one branch pipeline 1232 or each branch pipeline 1232 is provided with a switch valve (not marked in the figure), and the switch valve is connected to the control circuit, and the control circuit can control the switch valve on the corresponding branch pipeline 1232 to open, so that the liquid dielectric can enter the medium cavity 121 corresponding to the branch pipeline 1232. By controlling the opening and closing of the switch valve, the liquid dielectric can be input into or recovered from the selected medium cavity 121, thereby changing the capacity of the liquid dielectric in the medium cavity 121.

[0043] In one embodiment, the electromagnetic device may be an electromagnetic heating device. For example, the microwave heating device may be a microwave oven, a microwave steaming oven, a microwave fryer, a microwave rice steamer, a microwave heating stove, or other microwave heating device, which is not limited here. The electromagnetic device may also be a radar system, etc., which is not limited here.

[0044] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An electromagnetic generating device, characterized in that: include: An anode member having a plurality of resonant cavities; A tuning component, comprising at least one dielectric cavity, wherein the dielectric cavity is disposed in at least one of the resonant cavities, and the dielectric cavity is configured to accommodate a dielectric so as to adjust the equivalent dielectric constant in the resonant cavity through the dielectric, thereby adjusting the electromagnetic wave frequency of the electromagnetic generating device; The cathode member is spaced apart from the anode member.

2. The electromagnetic generating device according to claim 1, characterized in that: The tuning assembly also includes a dielectric comprising a liquid dielectric.

3. The electromagnetic generating device according to claim 2, characterized in that: The tuning assembly further comprises: A pipeline assembly, connected to the medium cavity; A pumping assembly is communicated with the pipeline and is configured to output or collect the liquid dielectric to the medium cavity to adjust the capacity of the liquid dielectric in the medium cavity.

4. The electromagnetic generating device according to claim 3, characterized in that: The resonant cavity penetrates through two end surfaces of the anode member spaced apart along the first direction along the first direction; The pipeline assembly comprises: A main pipeline is arranged outside the resonant cavity and close to the end surface, wherein the main pipeline is connected to the pumping assembly; The branch pipeline is communicated with the main pipeline and extends along the first direction into the resonant cavity to communicate with the dielectric cavity.

5. The electromagnetic generating device according to claim 4, characterized in that: The pipeline assembly includes two main pipelines, two ends of the branch pipeline are respectively connected to the two main pipelines, and the two main pipelines are respectively arranged on the two end surfaces.

6. The electromagnetic generating device according to claim 4, characterized in that: The electromagnetic generating device also includes: The anode component, the cathode component and the medium cavity are arranged in the shell, and the main pipeline and the pumping component are arranged outside the shell.

7. The electromagnetic generating device according to claim 2, characterized in that: The liquid dielectric includes a plurality of liquid dielectrics having different dielectric constants and being insoluble in each other.

8. The electromagnetic generating device according to claim 1, characterized in that: The tuning component includes a plurality of dielectric cavities, and the plurality of dielectric cavities are arranged in one-to-one correspondence with the resonant cavity.

9. The electromagnetic generating device according to claim 3, characterized in that: The pipeline assembly includes a quartz pipe.

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

11. The microwave device according to claim 10, characterized in that: The microwave device also includes: The control circuit is electrically connected to the pumping component of the electromagnetic generating device and is configured to generate control parameters of the pumping component to adjust the delivery period or speed of the liquid dielectric.

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