CN114956248A

CN114956248A - Slit microwave radiator

Info

Publication number: CN114956248A
Application number: CN202110206526.5A
Authority: CN
Inventors: 马中发; 孙琪琛; 董昌锋
Original assignee: Shaanxi Qinglang Wancheng Environmental Protection Technology Co Ltd
Current assignee: Shaanxi Qinglang Wancheng Environmental Protection Technology Co Ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2022-08-30
Anticipated expiration: 2041-02-24
Also published as: CN114956248B

Abstract

The invention provides a slit radiator, which relates to the technical field of microwave heating and comprises: a metal cavity, a waveguide, a magnetron and a slit; wherein the slit is arranged at the inner side of the bottom of the metal cavity; the plurality of slits are distributed on two sides of the central line of the bottom of the metal cavity in an array manner; the waveguide is connected with the magnetron; the waveguide is also connected to the side wall or top of the metal cavity. That is, the invention radiates the microwave diversity to the target object through the slits arranged at the bottom of the metal cavity in an array manner, thereby improving the microwave radiation diversity and the microwave utilization rate.

Description

Slit microwave radiator

Technical Field

The invention relates to the technical field of microwave heating, in particular to a slit microwave radiator.

Background

The industrial wastewater comprises production wastewater, production sewage and cooling water, and refers to wastewater and waste liquid generated in the industrial production process, wherein the wastewater and the waste liquid contain industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water. The industrial wastewater has various types and complex components. For example, the waste water from electrolytic salt industry contains mercury, the waste water from heavy metal smelting industry contains various metals such as lead and cadmium, the waste water from electroplating industry contains various heavy metals such as cyanide and chromium, the waste water from petroleum refining industry contains phenol, and the waste water from pesticide manufacturing industry contains various pesticides. Because industrial wastewater contains various toxic substances and pollutes the environment, the environment is harmful to human health, so that the industrial wastewater is developed to be comprehensively utilized and turn the harmful into the beneficial, and can be discharged after being treated by adopting corresponding purification measures according to the components and the concentration of pollutants in the wastewater.

Under the condition that water and air exist, the microwave catalyst absorbs electromagnetic waves to generate electron and electron hole pairs, oxyhydrogen electrons required by oxidative degradation are generated through a microwave catalytic reaction, and the oxyhydrogen electrons are subjected to oxidative degradation with phenolic organic matters and intermediate products in a reaction system, so that the phenolic organic matters are mineralized into inorganic matters such as carbon dioxide, water and the like, and the effect of complete degradation is achieved.

However, when the microwave radiator in the prior art acts on wastewater treatment, the acting area of the radiator is limited, so that the microwave is not fully utilized, thereby causing resource waste.

Disclosure of Invention

The present invention is directed to solve the above problems of the microwave radiators in the prior art, and an object of the present invention is to provide a slit microwave radiator to solve the problem of resource waste caused by insufficient utilization of microwaves due to limited action area of the microwave radiator in the prior art.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

the embodiment of the invention provides a slit microwave radiator, which is characterized by comprising: a metal cavity, a waveguide, a magnetron and a slit;

wherein the slit is arranged at the inner side of the bottom of the metal cavity; the plurality of slits are distributed on two sides of the central line of the bottom of the metal cavity in an array manner; the waveguide is connected with the magnetron; the waveguide is also connected with the side wall or the top of the metal cavity.

Optionally, the distance between the slit and the center line is a first distance.

Optionally, the length of the slit is one quarter of the first wavelength.

Optionally, the width of the slit is a second distance; wherein the first distance is different from the second distance.

Optionally, the slit of the bottom edge is a quarter of the first wavelength away from the bottom outer edge.

The invention has the beneficial effects that: the invention provides a slit microwave radiator, comprising: a metal cavity, a waveguide, a magnetron and a slit; wherein the slit is arranged at the inner side of the bottom of the metal cavity; the plurality of slits are distributed on two sides of the central line of the bottom of the metal cavity in an array manner; the waveguide is connected with the magnetron; the waveguide is also connected with the side wall or the top of the metal cavity. That is, the invention radiates the microwave diversity to the target object through the slits arranged at the bottom of the metal cavity in an array manner, thereby improving the microwave radiation diversity and the microwave utilization rate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic view of a microwave electrodeless ultraviolet lamp according to an embodiment of the present invention.

Icon: 1-metal cavity, 2-waveguide, 3-magnetron and 4-slit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

First, terms used in the present invention are explained:

magnetron: is an electric vacuum device for generating microwave energy. Essentially a diode placed in a constant magnetic field. Under the control of the constant magnetic field and the constant electric field which are vertical to each other, electrons in the tube interact with the high-frequency electromagnetic field to convert energy obtained from the constant electric field into microwave energy, thereby achieving the purpose of generating the microwave energy. Meanwhile, the magnetron is a consumable and is easily aged and demagnetized.

Waveguide: a structure for directing the electromagnetic waves.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

FIG. 1 is a schematic view of a microwave electrodeless ultraviolet lamp; the microwave electrodeless ultraviolet lamp provided by the embodiment of the invention is described in detail with reference to fig. 1.

Fig. 1 is a schematic view of a microwave electrodeless ultraviolet lamp according to an embodiment of the present invention, as shown in fig. 1, the microwave electrodeless ultraviolet lamp includes: a metal cavity 1, a waveguide 2, a magnetron 3 and a slit 4.

Wherein the slit 4 is arranged at the inner side of the bottom of the metal cavity 1; the slits 4 are distributed on two sides of the central line of the bottom of the metal cavity 1 in an array manner; the waveguide 2 is connected with the magnetron 3; the waveguide 2 is also connected with the side wall or the top of the metal cavity 1.

In the embodiment of the invention, the magnetron 3 can be an air-cooled magnetron, one end of the air-cooled magnetron is provided with a waveguide (Wave Guide) for directionally guiding the structure of the electromagnetic Wave, and the other end of the air-cooled magnetron is provided with a cooling fan for carrying out forced air-cooled heat dissipation on the air-cooled magnetron so as to prevent overheating damage.

Optionally, the distance between the slit 4 and the center line is a first distance; the length of the slit is one fourth of the first wavelength; the width of the slit is a second distance; wherein the first distance is different from the second distance; optionally, the slit of the bottom edge is a quarter of the first wavelength away from the bottom outer edge.

In the embodiment of the present invention, the first wavelength is calculated based on the following formula:

wherein λ is _g The first wavelength is lambda, the microwave wavelength is lambda, the preset length is a, and a can be set according to the actual equipment condition.

Specifically, the first distance is the distance between the slit 4 and the center line, the slit is the first slit on one side of the metal cavity 1, the distance between the slits on the same side is one quarter of the first wavelength, and the distances between the adjacent slits and the center line are increased in an arithmetic progression. Furthermore, the slits on the other side of the center line are distributed in the same manner as the slits, so that the slits are distributed and gradually expanded outwards on the two sides of the center line of the bottom surface of the metal cavity 1. The second distance is the width of each slit 4, the second distance being

The length of the slit 4 is

Illustratively, the slit radiator in the present embodiment can be used for microwave heating, and the microwave environment-friendly apparatus has various aspects, so that the microwave can be uniformly radiated from the slit into a larger rectangular parallelepiped space based on the microwave characteristics.

The slit microwave radiator provided in the embodiment of the invention comprises: the device comprises a metal cavity 1, a waveguide 2, a magnetron 3 and a slit 4; wherein, the slit 4 is arranged at the inner side of the bottom of the metal cavity 1; the plurality of slits 4 are distributed on two sides of the central line of the bottom of the metal cavity 1 in an array manner; the waveguide 2 is connected with the magnetron 3; the waveguide 2 is also connected with the side wall or the top of the metal cavity 1. That is to say, the invention radiates microwave diversity to the target object through the slits arranged at the bottom of the metal cavity in an array manner, thereby improving the diversity of microwave radiation and the utilization rate of the microwave, and enabling the target object to be heated quickly based on the microwave.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A slot microwave radiator, comprising: a metal cavity, a waveguide, a magnetron and a slit;

2. A slot microwave radiator as claimed in claim 1, wherein the slot is at a first distance from the centre line.

3. A slot microwave applicator as claimed in claim 2 in which the length of the slot is one quarter of the first wavelength.

4. A slot microwave radiator as claimed in claim 2, characterised in that the width of the slot is a second distance; wherein the first distance is different from the second distance.

5. A slot microwave applicator according to claim 1, characterized in that the slot of the bottom edge is at a distance of a quarter of the first wavelength from the bottom outer edge.