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Directly-coupling cup-shaped microwave energy-feeding antenna and array microwave heater thereof

A technology of a microwave heating device and an energy-feeding antenna, which is applied to microwave heating and other directions, can solve the problems of high cost, low efficiency, and uneven heating of the microwave heating device, and achieves the effects of compact structure, high efficiency, and improved heating uniformity.

Inactive Publication Date: 2009-05-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Existing microwave heating devices suitable for road surface heating are all based on pyramidal horn-shaped microwave feeding antenna arrays, but most of them have disadvantages such as low efficiency and uneven heating; and the existing microwave heating devices use industrial large Power continuous wave magnetron, and then use the power distribution network to feed each element antenna, which makes the existing microwave heating device expensive

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  • Directly-coupling cup-shaped microwave energy-feeding antenna and array microwave heater thereof
  • Directly-coupling cup-shaped microwave energy-feeding antenna and array microwave heater thereof
  • Directly-coupling cup-shaped microwave energy-feeding antenna and array microwave heater thereof

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Embodiment Construction

[0020] Attached below figure 1 figure 2 and image 3 The embodiment of the present invention will be further described.

[0021] This implementation case is designed according to the operating frequency of the microwave source is 2.45GHz. The direct-coupled cup-shaped microwave feeding antenna is made of stainless steel. It has good chemical stability in harsh environments such as volatiles, high mechanical strength, and is easy to process and install. Moreover, the entire surface area of ​​the cup-shaped cylinder is small, and the absorption of microwaves can be ignored. The radius a of the cup-shaped antenna cylinder 5 is 60 to 62 mm, and the height h is 120 to 123 mm; the inner radius c of the output coaxial line section 4 is 17.5 mm; the inner conductor of the coaxial line, that is, the diameter d of the magnetron output antenna head 2 is 17mm, the eccentricity e of the cup-shaped antenna cylinder 5 and the output antenna head 2 is 30mm, the insertion depth f of the ou...

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Abstract

A direct coupled cup shaped microwave energy feeding antenna and array microwave heating device belong to the microwave application technology field, and relates to industrial microwave heating technology. The direct coupled cup shaped microwave energy feeding antenna comprises a microwave magnetron (1), an output coaxial line segment (4) and a cup shaped antenna; the cup shaped antenna is connected with the output coaxial line segment (4) eccentricly. The direct coupled cup shaped microwave energy feeding antenna array microwave heating device comprises: a direct coupled cup shaped microwave energy feeding antenna array which consists of several direct coupled cup shaped microwave energy feeding antennae arranged tightly and displaced. The direct coupled cup shaped microwave energy feeding antenna in the invention has a low input standing wave ratio and a high coupling efficiency; the microwave radiation pattern generated by the tightly displaced arranged antenna array benefits for large area uniform high efficiency heating application, and achieves low cost and convenient maintenance. The invention is suitable for asphalt concrete road construction and heating in road waintenance and road surface deicing.

Description

technical field [0001] The invention belongs to the technical field of microwave energy application, relates to industrial microwave heating technology, and is especially suitable for applications requiring large-area uniform heating, such as heating in construction and maintenance of asphalt concrete roads or heating for road surface deicing. Background technique [0002] In the application of industrial microwave heating technology, microwave heating devices are divided into resonance type (single-mode cavity or multi-mode cavity), transmission type (fundamental mode or high mode), radiation type (closed or open type), slow wave type (surface Wave) and many other structures to adapt to heating objects of different shapes, volumes and special requirements. Usually, the materials to be heated are placed in a microwave heating device, which can be produced by continuous heating in a cavity-type microwave heating device, or continuously heated in a multi-mode tunnel-type micro...

Claims

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Application Information

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IPC IPC(8): H05B6/72H05B6/64
Inventor 黎晓云李承跃张兆镗
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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