CN212136657U

CN212136657U - Microwave transmission integrated waveguide tube

Info

Publication number: CN212136657U
Application number: CN202021376861.7U
Authority: CN
Inventors: 王爱华; 吕进凯; 王琳玮
Original assignee: Yantai North Microwave Technology Co ltd
Current assignee: Yantai North Microwave Technology Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2020-12-11
Anticipated expiration: 2030-07-14

Abstract

The utility model discloses a microwave transmission integrated waveguide, including two at least wave guide pipes, fixed connection is passed through flange at the middle part of two wave guide pipes side by side, and the excitation chamber is installed to the tip of wave guide pipe, and the excitation chamber passes through buckle fixed connection with the magnetron, and the magnetron is perpendicular with excitation chamber axis, and the cooling tuber pipe sets up in excitation chamber tip, and the export of cooling tuber pipe and the corresponding wave guide of magnetron are copper or copper alloy material with the excitation chamber, adopt integrated into one piece technique machine-shaping. Through with excitation chamber and waveguide integrated into one piece, avoid producing the microwave loss because of the seam problem, improved transmission efficiency. Through setting up the cooling air pipe, dispel the heat to the excitation chamber, prevent that excitation chamber temperature is too high. Through flange, integrate multiunit waveguide, effectively solve the standing wave big, the uneven problem of microwave distribution has improved microwave heating efficiency.

Description

Microwave transmission integrated waveguide tube

Technical Field

The utility model belongs to the technical field of the microwave equipment technique and specifically relates to a microwave transmission integrated waveguide.

Background

Microwave refers to electromagnetic wave with frequency of 300MHz-300GHz, and its basic properties are usually three characteristics of penetration, reflection and absorption. For glass, plastic and porcelain, microwaves almost pass through without being absorbed. The microwave is absorbed into water and food, and the microwave is self-heated. And for metal objects, the microwave is reflected.

Microwave is an energy-saving and environment-friendly technology, and is often used for heating and drying some special objects in industry. However, the existing manufacturing process is formed by casting or splicing welding, and has the disadvantages of poor precision, high processing cost, difficult integration, uneven distribution and great limitation on the application field.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical insufficiency that prior art exists, the utility model provides a microwave transmission integrated waveguide. The microwave waveguide and the excitation cavity are integrated, and the waveguide tubes are connected by a special flange to form an integrated microwave transmission waveguide.

The utility model provides a technical scheme that its technical problem adopted is, a microwave transmission integrated waveguide, including two at least wave guide pipes, fixed connection is side by side passed through flange in the middle part of two wave guide pipes, and the excitation chamber is installed to the tip of wave guide pipe, and the excitation chamber passes through buckle fixed connection with the magnetron, and the magnetron is perpendicular with excitation chamber axis, and the cooling tuber pipe sets up in excitation chamber tip, and the export of cooling tuber pipe is corresponding with the magnetron.

The waveguide tube is rectangular, and the waveguide tube and the excitation cavity are made of copper or copper alloy materials and are processed and formed by adopting an integral forming technology.

A through hole is formed in the side face of the excitation cavity, and the magnetron antenna penetrates through the through hole and is arranged inside the excitation cavity.

The waveguide tubes are connected in parallel and fixed through connecting flanges, and the number of the waveguide tubes is two, three or four.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through with excitation chamber and waveguide integrated into one piece, avoid producing the microwave loss because of the seam problem, improved transmission efficiency.

2. Through setting up the cooling air pipe, dispel the heat to the excitation chamber, prevent that excitation chamber temperature is too high.

3. Through flange, integrate multiunit waveguide, effectively solve the standing wave big, the uneven problem of microwave distribution has improved microwave heating efficiency.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a microwave transmission integrated waveguide according to embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a microwave transmission integrated waveguide according to embodiment 2 of the present invention;

fig. 3 is a schematic structural diagram of a microwave transmission integrated waveguide according to embodiment 3 of the present invention;

FIG. 4 is a cross-sectional view of the attachment flange;

in the figure, 1 is a magnetron, 2 is an excitation cavity, 3 is a cooling air pipe, 4 is a waveguide pipe, 5 is a connecting flange, and 6 is an antenna.

Detailed Description

Example 1

Referring to the attached drawing 1, a microwave transmission integrated waveguide comprises two waveguide tubes, the middle parts of the two waveguide tubes 4 are fixedly connected in parallel through a connecting flange 5, an excitation cavity 2 is installed at one end of each waveguide tube 4, a magnetron 1 is connected with the excitation cavity 2 through a buckle, a through hole is formed in the excitation cavity 2, a magnetron antenna 6 penetrates through the through hole and is arranged inside the excitation cavity 2, the magnetron 1 generates microwaves through electromagnetic action, the microwaves are transmitted into the excitation cavity 2 through the antenna 6, the microwaves are transmitted to the waveguide tubes 4 through the restraint and reflection of the excitation cavity 2, the microwaves are transmitted to waveguide tube openings through multiple reflections in the waveguide tubes 4 to heat and dry objects, a cooling air pipe 3 is arranged at one end of the excitation cavity 2, when the magnetron 1 starts to work, the cooling air pipe 3 starts to operate to ventilate and dissipate heat of the magnetron 1, and the waveguide tubes 4 are rectangular, the waveguide tube 4 and the excitation cavity 2 are made of copper or copper alloy materials and are processed and formed by adopting an integral forming technology.

Example 2

Referring to fig. 2, the microwave transmission integrated waveguide of the present example has a structure substantially identical to that of example 1 except that it includes three waveguides, and the middle portions of the three waveguides are connected in parallel by a connection flange.

Compared with the microwave transmission integrated waveguide tube in the embodiment 1, the microwave transmission integrated waveguide tube prepared by integrating the three waveguide tubes has more uniform microwave transmission and higher heating efficiency.

Example 3

Referring to fig. 3, the microwave transmission integrated waveguide of the present example has a structure substantially identical to that of embodiment 1 except that the microwave transmission integrated waveguide includes four waveguides, and the middle portions of the four waveguides are connected in parallel by a connection flange.

Compared with the microwave transmission integrated waveguide tubes of

embodiments

1 and 2, the microwave transmission integrated waveguide tube prepared by integrating the four waveguide tubes has the advantages of more uniform microwave transmission, higher efficiency, larger installation volume and higher production cost.

Claims

1. A microwave transmission integrated waveguide, comprising: the microwave oven comprises at least two waveguide tubes, the waveguide tubes are fixedly connected through a connecting flange, an excitation cavity is installed at the end part of each waveguide tube, the excitation cavity is fixedly connected with a magnetron, the magnetron is perpendicular to the axis of the excitation cavity, a cooling air pipe is installed at the end part of the excitation cavity, and the outlet of the cooling air pipe corresponds to the magnetron.

2. A microwave transmission integrated waveguide as defined in claim 1, wherein: the waveguide tube is of a square structure, the waveguide tube and the excitation cavity are of an integrally formed structure, and the waveguide tube is made of copper or copper alloy materials.

3. A microwave transmission integrated waveguide as defined in claim 1, wherein: the excitation cavity is provided with a through hole corresponding to the magnetron, and an antenna of the magnetron penetrates through the through hole and is arranged in the excitation cavity.

4. A microwave transmission integrated waveguide as defined in claim 1, wherein: the waveguide tubes are connected in parallel through connecting flanges, and the number of the waveguide tubes is two, three or four.