Double-excitation microwave assembly

Abstract

The utility model discloses a double-excitation microwave assembly, which belongs to the technical field of waveguide excitation cavities of microwave generators and mainly comprises a waveguide fixing plate, two guided wave exciters arranged on the waveguide fixing plate, an impedance tuning plate arranged below the waveguide fixing plate and antenna fixing holes arranged above the guided wave exciters. The impedance tuning board is provided with a first microwave leading-out port and a second microwave leading-out port, and the first microwave leading-out port and the second microwave leading-out port are rectangular. Due to the fact that the circle centers of every two antenna fixing holes are spaced by a specific distance, the first microwave leading-out port and the second microwave leading-out port are spaced by a specific distance and the first microwave leading-out port and the second microwave leading-out port are in specific shapes and sizes, the assembly can be directly used for a large-power microwave system clock required by a small cavity, and the assembly has the advantages of being high in efficiency, low in cost and the like. Therefore, the mutual interference of the guided waves is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waveguide excitation cavities of microwave generators, and particularly relates to a dual-excitation microwave component. Background Art

[0002] When a magnetron is in use, it must be excited by a waveguide to convert the microwave power output coaxially into a waveform through waveguide excitation, and couple the microwave oven power from the waveguide port to the cavity. There are generally two forms in existing applications: single-tube and multi-tube. The single-tube is generally for a small cavity, that is, one waveguide matches one cavity, and a typical example is a microwave oven. The multi-tube is mostly used in industry and commerce where the power demand is large, so the cavity and load are larger and more.

[0003] The single-tube is applied to a small cavity, and impedance matching is relatively easy. The multi-tube is used for a large cavity and large load, and the impedance can also be well matched. However, when a small cavity requires high power, the impedance of existing products is not well matched. When using the multi-tube combination method, mutual interference is likely to occur, affecting efficiency and equipment reliability.

[0004] It can be seen that the existing technology still needs to be improved. Summary of the Utility Model

[0005] Utility Model Objective: A dual-excitation microwave component to solve the above problems existing in the prior art.

[0006] To solve the above technical problems, the utility model provides a dual-excitation microwave component, including a waveguide fixing plate, on which two waveguide exciters are provided. An impedance tuning plate is provided below the waveguide fixing plate. Antenna fixing holes are provided above the waveguide exciters. A first microwave output port and a second microwave output port are opened on the impedance tuning plate, and both the first microwave output port and the second microwave output port are set as rectangles.

[0007] As a preferred solution, the distance between the centers of any two of the antenna fixing holes is between 110 mm and 130 mm.

[0008] As a preferred solution, the waveguide exciter is set as a funnel shape that is large at the bottom and small at the top.

[0009] As a preferred solution, the distance between the first microwave output port and the second microwave output port is between 80 mm and 85 mm.

[0010] As a preferred solution, the lengths of both the first microwave output port and the second microwave output port are 80 mm, and the widths of both the first microwave output port and the second microwave output port are between 40 mm and 45 mm.

[0011] As a preferred solution, a fixing hole is provided above the waveguide exciter and outside the antenna fixing hole.

[0012] As a preferred solution, a first positioning through hole is provided on the waveguide fixing plate, a second positioning through hole aligned with the first positioning through hole is provided on the waveguide exciter, and a third positioning through hole aligned with the second positioning through hole is provided on the impedance tuning plate.

[0013] As a preferred solution, a first fixing through hole is provided on the impedance tuning plate, and a second fixing through hole aligned with the first fixing through hole is provided on the waveguide fixing plate.

[0014] Beneficial effects: The present utility model relates to a dual-excitation microwave component. By setting the centers of the two antenna fixing holes at a specific distance apart, the first microwave output port and the second microwave output port at a specific distance apart, and the first microwave output port and the second microwave output port with specific shapes and sizes, this component can be directly used in a microwave system with high power requirements in a small cavity, featuring high efficiency, good stability, etc., and avoiding the situation of mutual interference of waveguide waves. Description of the Drawings

[0015] Figure 1 It is a side view of the overall structure of the present utility model.

[0016] Figure 2 It is a top view of the waveguide exciter of the present utility model.

[0017] Figure 3 It is a top view of the waveguide fixing plate of the present utility model.

[0018] Figure 4 It is a top view of the impedance tuning plate of the present utility model

[0019] In the figures, each reference numeral is: waveguide exciter 1, waveguide fixing plate 2, impedance tuning plate 3, antenna fixing hole 4, fixing hole 5, second positioning through hole 6, first positioning through hole 7, third positioning through hole 8, second fixing through hole 9, first fixing through hole 10, first microwave output port 11, second microwave output port 12. Detailed Embodiments

[0020] In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present utility model, some well-known technical features in the art are not described.

[0021] The applicant's research found that when a single tube is applied to a small cavity, impedance matching is relatively easy. For multiple tubes used in a large cavity with a large load, impedance can also be well matched. However, when a small cavity requires high power, the impedance of existing products is difficult to match. Using a combination of multiple tubes is prone to mutual interference, affecting efficiency and equipment reliability.

[0022] Therefore, the present utility model provides a dual-excitation microwave component. Please refer to Figures 1 to 4 , this device includes a waveguide fixing plate 2, on which two waveguide exciters 1 are provided. Below the waveguide fixing plate 2, an impedance tuning plate 3 is provided. Above the waveguide exciter 1, an antenna fixing hole 4 is provided. On the impedance tuning plate 3, a first microwave output port 11 and a second microwave output port 12 are provided, and both the first microwave output port 11 and the second microwave output port are set to be rectangular. The present utility model is a dual-feed microwave component that can be used in a small cavity. By setting the centers of two adjacent antenna fixing holes 4 at a specific distance, the first microwave output port 11 and the second microwave output port 12 at a specific distance, and the first microwave output port 11 and the second microwave output port 12 with specific shapes and sizes, this component can be directly used in a microwave system with high power requirements in a small cavity, featuring high efficiency and good stability, and avoiding the situation of mutual interference of waveguide waves.

[0023] Preferably, please refer to Figure 1 the label b in, the distance between the centers of two adjacent antenna fixing holes 4 is between 110 mm and 130 mm. This size setting makes the output efficiency of the waveguide wave optimal.

[0024] Preferably, the waveguide exciter 1 is set to be funnel-shaped with a larger bottom and a smaller top. This shape setting makes the output efficiency of the waveguide wave optimal.

[0025] Preferably, please refer to Figure 4 the label a in, the distance between the first microwave output port 11 and the second microwave output port 12 is between 80 mm and 85 mm. This size setting makes the output efficiency of the waveguide wave optimal.

[0026] Preferably, the length of both the first microwave output port 11 and the second microwave output port 12 is 80 mm, and the width of both the first microwave output port 11 and the second microwave output port 12 is between 40 mm and 45 mm. This size setting makes the output efficiency of the waveguide wave optimal.

[0027] Furthermore, above the waveguide exciter 1 and outside the antenna fixing hole 4, a fixing hole 5 is provided; in specific implementation, the antenna of the magnetron can be installed at the antenna fixing hole 4 by screwing at the fixing hole 5.

[0028] Furthermore, a first positioning through-hole 7 is formed in the waveguide fixing plate 2, a second positioning through-hole 6 aligned with the first positioning through-hole 7 is formed in the waveguide exciter 1, and a third positioning through-hole 8 aligned with the second positioning through-hole 6 is formed in the impedance tuning plate 3. During specific implementation, by aligning the first positioning through-hole 7, the second positioning through-hole 6, and the third positioning through-hole 8, the waveguide exciter 1, the waveguide fixing plate 2, and the impedance tuning plate 3 are fixed in appropriate orientations.

[0029] Furthermore, a first fixing through-hole 10 is formed in the impedance tuning plate 3, and a second fixing through-hole 9 aligned with the first fixing through-hole 10 is formed in the waveguide fixing plate 2. During specific implementation, by aligning the first fixing through-hole 10 with the second fixing through-hole 9 and screwing in screws in the first fixing through-hole 10 and the second fixing through-hole 9, the waveguide fixing plate 2 is fixed to the impedance tuning plate 3.

[0030] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the protection scope of the present invention.

Claims

1. A dual-excitation microwave component, characterized in that, Comprising: Waveguide fixing plate; Two waveguide exciters are provided on the waveguide fixing plate, an impedance tuning plate is provided below the waveguide fixing plate, antenna fixing holes are provided above the waveguide exciters, a first microwave output port and a second microwave output port are formed on the impedance tuning plate, and both the first microwave output port and the second microwave output port are set as rectangles.

2. The dual-excitation microwave component according to claim 1, wherein: The distance between the centers of two adjacent antenna fixing holes is between 110 mm and 130 mm.

3. The dual-excitation microwave component according to claim 1, wherein: The waveguide exciter is set as a funnel shape with a larger bottom and a smaller top.

4. The dual-excitation microwave component according to claim 1, wherein: The distance between the first microwave output port and the second microwave output port is between 80 mm and 85 mm.

5. The dual-excitation microwave component according to claim 1, wherein: The lengths of both the first microwave output port and the second microwave output port are 80 mm, and the widths of both the first microwave output port and the second microwave output port are between 40 mm and 45 mm.

6. The dual-excitation microwave component according to claim 1, wherein: Fixing holes are provided above the waveguide exciter and outside the antenna fixing holes.

7. The dual-excitation microwave component according to claim 1, wherein: A first positioning through hole is formed on the waveguide fixing plate, a second positioning through hole aligned with the first positioning through hole is formed on the waveguide exciter, and a third positioning through hole aligned with the second positioning through hole is formed on the impedance tuning plate.

8. The dual-excitation microwave component according to claim 1, wherein: A first fixing through hole is formed on the impedance tuning plate, and a second fixing through hole aligned with the first fixing through hole is formed on the waveguide fixing plate.

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