CN110493908B

CN110493908B - Microwave leakage prevention grid and microwave heater

Info

Publication number: CN110493908B
Application number: CN201910742530.6A
Authority: CN
Inventors: 彭嘉宇; 区惠平; 周柳强
Original assignee: Guangxi Zhuang Nationality Autonomous Region Academy of Agricultural Sciences
Current assignee: Guangxi Zhuang Nationality Autonomous Region Academy of Agricultural Sciences
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2021-11-16
Anticipated expiration: 2039-08-13
Also published as: CN110493908A

Abstract

The invention discloses a microwave leakage prevention grid, which relates to the technical field of microwave leakage prevention and comprises an outer door plate, a grid structure and an inner door plate, wherein the inner door plate is fixed on the outer door plate, the grid structure is packaged between the outer door plate and the inner door plate, a transparent window is arranged on the outer door plate, a abdicating through hole is arranged at the corresponding position of the grid structure, a dispersing lens is embedded and installed on the inner door plate, so that microwaves are dispersed at the positions of the grid structure except the abdicating through hole, an auxiliary strip is also arranged at the outer side position of a bottom plate, the outer side surface of the bottom plate extends outwards to form a pressing strip, and the auxiliary strip is fixed on the outer door plate to extrude the pressing strip. Through the design to grid structure and assistant strip, can carry out effectual absorption and processing to the microwave to this kind of grid structure among this technical scheme can not lose the observation ability to the interior polar content heating condition of microwave heater because of need carry out efficient handling to the microwave.

Description

Microwave leakage prevention grid and microwave heater

Technical Field

The invention relates to the technical field of microwave leakage prevention, in particular to a microwave leakage prevention grid and a microwave heater.

Background

The microwave is an electromagnetic wave with a frequency of 300 MHz-300 GHz, i.e. an electromagnetic wave with a wavelength of 100 cm-1 mm, i.e. a wavelength between far infrared and radio waves, and is widely used in the civil fields of industry, scientific research, medicine, home use, and the like. Of these, microwaves of between 1cm and 25cm are mainly used for radar transmission, and microwaves of other wavelengths are mainly used for communication, and in order to avoid interference with these applications, microwave heaters for domestic and industrial use mainly use microwaves of 12.2cm (2.45 GHz).

Microwave heaters are tools that use microwaves to heat polar contents. However, since microwaves are harmful to human bodies, it is necessary to prevent the microwaves from leaking when using the microwave heater, thereby preventing the microwaves from harming human health. The science shows that the metal can effectively prevent the microwave from being transmitted, so that the inner surface of the furnace cover of the general microwave heater is provided with a plurality of metal nets, and the microwave is prevented from being transmitted to the outside of the microwave heater.

In the existing microwave heater, in order to ensure that the polar liquid condition in the microwave heater can be visually seen during heating, a microwave heater door is generally made transparent, but here, the microwave heater door does not have a leakage-proof function for microwaves, and the microwaves are easy to leak from the opening and closing position of the heater to cause harm to human bodies.

Disclosure of Invention

The present invention is directed to a microwave leakage prevention grid and a microwave heater, which solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a prevent microwave leakage grid, includes outer door plant, grid structure and interior door plant, interior door plant is fixed on outer door plant, encapsulates grid structure between outer door plant and interior door plant, be equipped with the transparent window on the outer door plant, grid structure's the corresponding position department is equipped with the through-hole of stepping down, and the dispersion lens is installed in the embedding on the interior door plant, makes the microwave dispersion in grid structure except that the position department of stepping down the through-hole.

As a still further scheme of the invention: and a door handle is arranged on the outer door plate.

As a still further scheme of the invention: the grid structure comprises a metal mesh grid fixed on a bottom plate.

As a still further scheme of the invention: the outside position of bottom plate still is equipped with supplementary strip, and the lateral surface of bottom plate outwards extends and forms the compressing strip, and supplementary strip is fixed and is formed the extrusion to compressing strip on outer door plant.

As a still further scheme of the invention: the secondary strip includes a substrate and a choke groove provided on the substrate, and the choke groove has a groove depth of 1/4 of a wavelength of a microwave.

As a still further scheme of the invention: the choke groove is formed by the first reflection strip, the second reflection strip and the substrate in a surrounding mode.

As a still further scheme of the invention: the first reflection strip and the second reflection strip are made of metal materials.

A microwave applicator comprising a microwave leakage prevention grid as described above.

Compared with the prior art, the invention has the beneficial effects that: through the design to grid structure and assistant strip, can carry out effectual absorption and processing to the microwave to this kind of grid structure among this technical scheme can not lose the observation ability to the interior polar content heating condition of microwave heater because of need carry out efficient handling to the microwave.

Drawings

Fig. 1 is a schematic structural view of a microwave leakage prevention grid.

Fig. 2 is a schematic structural view of a grating structure in a microwave leakage prevention grating.

Fig. 3 is an enlarged view of a structure at a position a of the microwave leakage preventing grid of fig. 1.

In the figure: 1-outer door panel, 101-transparent window, 102-door handle, 2-grating structure, 201-compressing strip, 202-abdicating through hole, 203-metal woven mesh, 3-auxiliary strip, 301-substrate, 302-choke groove, 303-first reflecting strip, 304-second reflecting strip, 4-inner door panel and 5-dispersing lens.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Example 1

Referring to fig. 1 to 3, in an embodiment of the present invention, a microwave leakage prevention grid includes an outer door panel 1, a grid structure 2 and an inner door panel 4, a door handle 102 is disposed on the outer door panel 1, in the embodiment, the inner door panel 4 is fixed on the outer door panel 1, the grid structure 2 is encapsulated between the outer door panel 1 and the inner door panel 4, of course, a transparent window 101 is disposed on the outer door panel 1, a yielding through hole 202 is disposed at a corresponding position of the grid structure 2, and a dispersion lens 5 is embedded in the inner door panel 4, so that microwaves are dispersed at positions of the grid structure 2 other than the yielding through hole 202, and for the positions of 2.4 × 10³～2.5×10³Special shielding of MHz microwave energyShielding barrier at any accessible place equal to or greater than 50cm from the grid, so that the energy of the leaked microwave is 5mW/cm²The microwave heating device is used for destroying the resonance environment of the microwave, so that the microwave can be absorbed and destroyed, the microwave cannot be emitted from the abdicating through hole 202 and the transparent window 101, the heating condition of polar contents in the microwave heater is not influenced, and meanwhile, the leaked microwave can be effectively treated, thereby achieving two purposes.

In particular, the grid structure 2 comprises a metal mesh grid 203 fixed to a base plate to disrupt the resonant environment of the microwaves. The outside position of bottom plate still is equipped with supplementary strip 3 for fix the bottom plate, as preferred, the lateral surface of bottom plate outwards extends and forms compressing strip 201, and supplementary strip 3 is fixed and is formed the extrusion to compressing strip 201 on outer door plant 1, in order to realize grid structure 2's fixed.

Of course, in an extreme case, part of the microwave enters the position of the secondary bar 3 after being reflected, therefore, the present embodiment designs the structure of the secondary bar 3, where the secondary bar 3 includes the substrate 301 and the choke groove 302 disposed on the substrate 301, and the depth of the choke groove 302 is 1/4 of the wavelength of the microwave, so as to effectively prevent the microwave from leaking. Preferably, a plurality of first reflective strips 303 and second reflective strips 304 are arranged on the substrate 301 in a staggered manner, the first reflective strips 303 and the second reflective strips 304 are both L-shaped structures, and the first reflective strips 303 and the second reflective strips 304 and the substrate 301 enclose to form the choke groove 302. Of course, the first reflective strips 303 and the second reflective strips 304 are made of metal material.

In practical application, the microwave generated in the microwave heater diffuses outwards, after being dispersed by the dispersing lens 5, the microwave enters the positions except the yielding through holes 202 on the grating structure 2, the resonant environment of the microwave is destroyed by the grating structure 2, meanwhile, part of the microwave is destroyed again after being processed by the choke groove 302 on the auxiliary strip 3, the leaked microwave can be effectively processed, and meanwhile, the heating condition of polar contents in the microwave heater is not influenced for people to observe.

Example 2

In an embodiment of the present invention, a microwave applicator includes a microwave leakage prevention grid as described in the above embodiment, and thus has a function of absorbing and processing microwaves well.

It should be noted that, in the present technical solution, the design of the grid structure 2 and the auxiliary bars 3 can effectively absorb and treat the microwave, and the grid structure in the present technical solution does not lose the observation ability of the polar liquid heating condition in the microwave heater due to the need of highly effective treatment of the microwave.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A microwave leakage prevention grid, comprising:

the outer door plate (1), the outer door plate (1) is provided with a transparent window (101);

the inner door panel (4) is fixed on the outer door panel (1), the grid structure (2) is packaged between the outer door panel (1) and the inner door panel (4), and the dispersing lens (5) is embedded in the inner door panel (4), so that the microwave is dispersed in the position of the grid structure (2) except the abdicating through hole (202) after passing through the dispersing lens (5);

the grid structure (2) is provided with a yielding through hole (202) at the position corresponding to the transparent window (101) and the dispersing lens (5);

the grid structure (2) comprises a metal mesh grid (203) fixed on a bottom plate; the auxiliary strip (3) is further arranged at the outer side of the bottom plate, the outer side of the bottom plate extends outwards to form a pressing strip (201), and the auxiliary strip (3) is fixed on the outer door plate (1) to extrude the pressing strip (201); the auxiliary strip (3) comprises a substrate (301) and a choke groove (302) arranged on the substrate (301), and the depth of the choke groove (302) is 1/4 of the wavelength of the microwave.

2. The microwave leakage prevention grid according to claim 1, wherein the outer door panel (1) is provided with a door handle (102).

3. The microwave leakage prevention grid according to claim 1, wherein the substrate (301) is provided with a plurality of first reflective strips (303) and second reflective strips (304) which are arranged in a staggered manner, the first reflective strips (303) and the second reflective strips (304) are each in an L-shaped structure, and the first reflective strips (303) and the second reflective strips (304) and the substrate (301) enclose to form the choke grooves (302).

4. A microwave leakage prevention grid according to claim 3, characterized in that the first reflecting strips (303) and the second reflecting strips (304) are made of metal material.

5. A microwave heater comprising the microwave leakage preventing grid according to any one of claims 1 to 4.