CN219555185U - Waveguide and microwave cooking utensil - Google Patents

Abstract

The utility model belongs to the technical field of household appliances, and discloses a waveguide and a microwave cooking appliance. The waveguide is applied to a microwave cooking appliance, the microwave cooking appliance comprises a microwave generating device, and the waveguide comprises a box body and a cover body; the box body and the cover body surround to define a microwave transmission channel which is L-shaped; the cover body comprises a first cover plate and a second cover plate which are perpendicular to each other, and the connection position of the first cover plate and the second cover plate is a bending angle of the waveguide; an accommodating space is arranged between the first cover plate and the second cover plate, and the accommodating space is used for accommodating a microwave generating device; the second cover plate is arranged in the vertical direction, and a microwave inlet is arranged on the second cover plate. The waveguide in the utility model can increase the distance between the antenna cap of the microwave generating device and the bending angle of the waveguide, thereby reducing the power density at the bending angle, reducing the probability of the occurrence of ignition of the antenna cap of the microwave generating device and avoiding the phenomenon of easy occurrence of ignition of the antenna cap of the microwave generating device.

Description

Waveguide and microwave cooking utensil

Technical Field

The utility model relates to the technical field of household appliances, in particular to a waveguide and a microwave cooking appliance.

Background

This section provides merely background information related to the present disclosure and is not necessarily prior art.

The microwave cooking appliance (such as a microwave oven, a microwave oven or a micro-steaming and baking integrated machine) generally comprises a cooking cavity box body, a waveguide and a microwave generating device, wherein the microwave generating device and the waveguide are arranged on the cooking cavity box body, the microwave generating device is communicated with the cooking cavity through the waveguide, microwaves generated by the microwave generating device are sent into the cooking cavity through the waveguide, and the microwaves are utilized to heat and cook food in the cooking cavity.

As shown in fig. 1, the microwave generating apparatus 20 'of the related art has an antenna cap 21', and the power density at the inflection angle 15 'of the waveguide 10' is large, so that the antenna cap 21 'of the microwave generating apparatus 20' is liable to be ignited.

Disclosure of Invention

The utility model aims to at least solve the problem that the antenna cap of a microwave generating device is easy to generate a sparking phenomenon due to the fact that the power density of a microwave cooking utensil in the prior art is larger at the bending angle of a waveguide. The aim is achieved by the following technical scheme:

a first aspect of the present utility model proposes a waveguide applied to a microwave cooking appliance including a microwave generating device, the waveguide including a case and a cover; the box body and the cover body surround to define a microwave transmission channel, and the microwave transmission channel is L-shaped;

the cover body comprises a first cover plate and a second cover plate which are perpendicular to each other, and the connection position of the first cover plate and the second cover plate is a bending angle of the microwave transmission channel;

an accommodating space is arranged between the first cover plate and the second cover plate at the outer side of the microwave transmission channel, and the accommodating space is used for accommodating the microwave generating device;

the second cover plate is arranged in the vertical direction, and a microwave inlet for inserting an antenna cap of the microwave generating device is formed in the second cover plate.

According to the waveguide, the accommodating space is arranged between the first cover plate and the second cover plate, and the microwave generating device is arranged in the accommodating space, so that compared with the prior art that the microwave generating device is arranged on one side of the waveguide, the distance between the antenna cap of the microwave generating device and the bending angle of the microwave generating device is increased, the power density at the bending angle can be reduced, the probability of striking fire of the antenna cap of the microwave generating device is reduced, and the phenomenon that the antenna cap of the microwave generating device is easy to strike fire is avoided.

In addition, the waveguide according to the utility model may have the following additional technical features:

in some embodiments of the utility model, the height of the second cover plate is greater than or equal to 76 millimeters.

In some embodiments of the present utility model, the box body includes a first plate body, a second plate body, a third plate body, and a fourth plate body, wherein the first plate body, the second plate body, and the third plate body are sequentially connected;

the first plate body is connected with the second cover plate; the first cover plate and the third cover plate are oppositely arranged;

the fourth plate body is connected with the first cover plate, and a microwave outlet is arranged between the fourth plate body and the third plate body.

In some embodiments of the utility model, the case further comprises two bending plates; the two bending plates are respectively arranged at two opposite sides of the cover body.

In some embodiments of the utility model, the second cover plate and the second plate body are arranged in parallel at a distance, and a distance between the second cover plate and the second plate body is greater than or equal to 41 millimeters.

In some embodiments of the present utility model, the first cover plate is provided with a mounting hole, and the accommodating space is provided between the mounting hole and the second cover plate.

A second aspect of the present utility model proposes a microwave cooking appliance comprising:

the box body is internally provided with a cooking cavity;

a microwave generating device; and

and the microwave generating device is communicated with the cooking cavity through the waveguide.

In some embodiments of the present utility model, the microwave generating device is disposed in the accommodating space, or the microwave generating device is disposed at one of both sides in the width direction of the waveguide and an upper side of the waveguide.

In some embodiments of the present utility model, the microwave cooking appliance further includes a stirring device mounted on the first cover plate, and the stirring device and the microwave outlet of the waveguide are disposed correspondingly;

the accommodating space is arranged between the stirring device and the second cover plate.

In some embodiments of the utility model, the distance between the inflection angle and the antenna cap of the microwave generating device is greater than or equal to 30 millimeters.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic diagram of a prior art connection structure of a waveguide and a microwave generating device;

fig. 2 schematically illustrates a structural schematic view of a microwave cooking appliance according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of the waveguide shown in FIG. 2;

FIG. 4 is a schematic view of the waveguide shown in FIG. 3 at a second view angle;

fig. 5 is a schematic perspective view of a space between the microwave generating device and the waveguide shown in fig. 2;

fig. 6 is a schematic plan view of a structure between the microwave generating device and the waveguide shown in fig. 5.

The reference numerals are as follows:

100 is a microwave cooking appliance;

10 is a waveguide;

11 is a box body; 111 is a first plate body; 112 is a second plate; 113 is a third plate body; 114 is a fourth plate; 115 is a curved plate; 1151 is a first daughter board portion; 1152 is a second daughter board portion;

12 is a cover body; 121 is a first cover plate; 1211 is a mounting hole; 122 is a second cover plate;

13 is a microwave inlet;

14 is a microwave outlet;

15 is a bending angle;

16 is a containing space;

20 is a microwave generating device; 21 is an antenna cap;

30 is a box body; 31 is a cooking chamber;

40 is a stirring device;

50 is a skirt portion.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 2 to 6, wherein fig. 2 schematically illustrates a schematic structural view of a microwave cooking appliance 100 according to an embodiment of the present utility model, fig. 3 is a schematic structural view of the waveguide 10 illustrated in fig. 2, and fig. 4 is a schematic structural view of the waveguide 10 illustrated in fig. 3 at a second viewing angle. According to a first aspect of an embodiment of the present utility model, there is provided a waveguide 10, wherein the waveguide 10 is applied to a microwave cooking appliance 100, the microwave cooking appliance 100 comprising a microwave generating device 20, the waveguide 10 comprising a box 11 and a cover 12; wherein, the box body 11 and the cover body 12 are surrounded to define a microwave transmission channel which is L-shaped; the cover body 12 comprises a first cover plate 121 and a second cover plate 122 which are perpendicular to each other, and the connection position of the first cover plate 121 and the second cover plate 122 is the bending angle 15 of the waveguide 10; a receiving space 16 is arranged between the first cover plate 121 and the second cover plate 122 at the outer side of the microwave transmission channel, and the receiving space 16 is used for placing the microwave generating device 20; the second cover plate 122 is disposed in a vertical direction, and the second cover plate 122 is provided with a microwave inlet 13 into which the antenna cap 21 of the microwave generating device 20 is inserted.

According to the waveguide 10, the accommodating space 16 is arranged between the first cover plate 121 and the second cover plate 122, and the microwave generating device 20 is placed in the accommodating space 16, so that the distance between the antenna cap 21 of the microwave generating device 20 and the bending angle 15 of the waveguide 10 is increased, the power density at the bending angle 15 is reduced, the probability of igniting the antenna cap 21 of the microwave generating device 20 is reduced, and the phenomenon that the antenna cap 21 of the microwave generating device 20 is easy to ignite is avoided.

It should be noted that, the microwave generating device 20 in the prior art is placed on the right side of the second cover plate 122, where the height is relatively short, so that the distance between the antenna cap of the microwave generating device 20 and the bending angle 15 is small, while in the present utility model, the microwave generating device 20 is placed in the accommodating space 16, where the distance between the microwave generating device and the bending angle 15 is high, so that the power density at the bending angle 15 can be reduced.

The antenna cap 21 of the microwave generating device 20 is located in the microwave transmission path. As shown in fig. 1, the microwave generating device 20 is located on the right side of the waveguide 10 in the prior art, the accommodating space 16 between the first cover plate 121 and the second cover plate 122 is smaller, the microwave generating device 20 cannot be put down, that is, the length of the first cover plate 121 in the left-right length direction is shorter, the microwave generating device 20 cannot be placed above the first cover plate 121, so that the distance L1 between the bending angle 15 and the antenna cap 21 is smaller in the prior art, the energy density of the bending angle 15 is higher, and the ignition phenomenon is easy to occur. In the prior art, the distance L1 is typically around 10 mm.

In the waveguide 10 of the present utility model, as shown in fig. 3, the length of the first cover plate 121 in the left-right direction is increased, so that the accommodating space 16 can be placed under the microwave generating device 20, so that the distance between the antenna cap 21 and the folded corner 15 is long, and the probability of igniting the antenna cap 21 is reduced.

As shown in fig. 5 to 6, fig. 5 is a schematic perspective view of the microwave generating device 20 and the waveguide 10 shown in fig. 2; fig. 6 is a schematic plan view of the structure between the microwave generating device 20 and the waveguide 10 shown in fig. 5. In fig. 6, the distance between the bending angle 15 and the antenna cap 21 is L2, and the distance L2 between the bending angle 15 and the antenna cap 21 of the microwave generating device 20 is greater than or equal to 30 mm, and compared with the prior art in which L1 is 10 mm, the distance between the bending angle 15 and the antenna cap 21 of the microwave generating device 20 is significantly increased, so that the energy density at the bending angle 15 is reduced. The distance between the end of the antenna cap 21 and the second plate 112 is L3, and the data of L3 is not particularly limited here.

The structure of the waveguide 10 will be described below, optionally, the box 11 includes a first plate 111, a second plate 112, a third plate 113 and a fourth plate 114, where the first plate 111, the second plate 112 and the third plate 113 are sequentially connected, where the first plate 111 may be horizontally arranged or obliquely arranged, the second plate 112 intersects the first plate 111, the third plate 113 intersects the second plate 112, and the first plate 111 is connected to the second cover 122; the first cover plate 121 and the third plate 113 are disposed opposite to each other; the fourth plate 114 is connected to the first cover plate 121, and a microwave outlet 14 is provided between the fourth plate 114 and the third plate 113. The microwave outlet 14 is a rectangular hole, however, a circular hole or another hole may be provided in the fourth plate 114 as the microwave outlet 14.

The first plate 111, the second plate 112, the third plate 113 and the fourth plate 114 here enclose a rectangular tubular structure, on which the microwave outlet 14 is arranged.

In order to facilitate microwave transmission, the case 11 needs to be provided with a closed structure, so that the case 11 further includes two bending plates 115, and the number of the bending plates 115 is two; two bending plates 115 are respectively disposed at both sides of the cover 12.

The bent plate 115 includes a first sub-plate portion 1151 and a second sub-plate portion 1152, and may form a closed L-shaped microwave transmission channel, thereby allowing the entire waveguide 10 to conveniently propagate microwaves. In addition, here, the first cover plate 121 is provided with mounting holes 1211 for mounting the stirring device 40.

Alternatively, the height of the second cover 122 is greater than or equal to 76 mm, for example, the height of the second cover 122 may be 78 mm or 80 mm, etc., wherein the height of the second cover 122 is a parameter determined by the total height, volume ratio, etc. of the microwave cooking appliance 100. The height of the second cover 122 is the dimension in the height direction in fig. 3.

Alternatively, the second cover 122 and the second plate 112 are disposed in parallel at a distance of 41 mm or more, for example, the distance L3 between the end of the antenna cap 21 and the second plate 112 may be about 8 mm, where the distance between the second cover 122 and the second plate 112 is 42 mm or 45 mm or more.

The microwave inlet 13 may be disposed at a central position of the second cover 122, or may be disposed at an upper position of the second cover 122, and the microwave inlet 13 may be a circular hole.

According to a second aspect of the embodiment of the present utility model, there is provided a microwave cooking appliance 100 including a cabinet 30, a microwave generating device 20 and a waveguide 10, a cooking cavity 31 is provided in the cabinet 30, the cooking cavity 31 is used for cooking food, and the microwave generating device 20 communicates with the cooking cavity 31 through the waveguide 10.

Alternatively, the microwave generating device 20 is disposed in the accommodating space 16, and the microwave generating device 20 may be disposed on one of two sides in the width direction of the waveguide 10 and an upper side of the waveguide 10, which can make the distance between the antenna cap 21 and the bending angle 15 longer, so as to solve the problem of igniting the antenna cap 21.

Of course, the microwave generating device 20 may be disposed at another location, but in consideration of the compact requirement of the microwave cooking appliance 100, the microwave generating device 20 needs to be disposed close to the waveguide 10. The microwave generating device 20 here includes a magnetron or the like for generating microwaves.

Optionally, the microwave cooking apparatus 100 further includes a stirring device 40, where the stirring device 40 is mounted on the first cover 121, and the stirring device 40 is disposed corresponding to the microwave outlet 14 of the waveguide 10, and the stirring device 40 can drive the stirring shaft to stir by using microwaves, which is a common structure in the prior art, and detailed description of the specific configuration of the stirring device 40 is omitted here.

Optionally, the accommodating space 16 is provided between the stirring device 40 and the second cover 122, that is, the microwave generating device 20 is disposed on the first cover 121 between the stirring device 40 and the second cover 122, and the microwave generating device 20 does not affect the normal use of the stirring device 40.

It should be noted that, the space enclosed by the second cover plate 122, the first plate 111, the second plate 112, and the second sub-plate 1152 is a first channel of the microwave transmission channel, the first channel is disposed in a vertical direction, and microwaves of the first channel are transmitted downward along the vertical direction; the space enclosed by the first cover plate 121, the third plate 113, the fourth plate 114 and the first sub-plate 1151 is a second channel of the microwave transmission channel, the second channel is arranged in a horizontal direction, and microwaves in the second channel are transferred along the horizontal direction and flow out from the position of the microwave outlet 14 into the cooking cavity 31.

In addition, the first cover plate 121, the second cover plate 122, the first plate 111, the second plate 112, the third plate 113, the fourth plate 114 and the curved plate 115 are provided with the skirt portion 50 at the periphery, and the skirt portion 50 is connected by welding, thereby preventing leakage of microwaves.

Alternatively, the waveguide 10 is connected to the case 30, and specifically, the third plate 113 of the waveguide 10 may be fixed to the case 30 by rivets or screws, so that the fixing of the waveguide 10 to the case 30 may be achieved.

It should be noted that, the distance between the center point of the mounting hole 1211 and the center line between the antenna cap 21 and the second plate 112 is an integer multiple of one half wavelength of the microwave, so that the center line of the antenna shaft of the stirring device 40 may be located at the peak position, and the output efficiency may be improved. The distance between the center point of the mounting hole 1211 and the second cover plate 122 in the related art is small, and the distance between the center line between the antenna cap 21 and the second plate 112 and the center point of the mounting hole 1211 cannot be an integer multiple of one half wavelength of the microwave.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A waveguide applied to a microwave cooking appliance, the microwave cooking appliance comprising a microwave generating device, characterized in that the waveguide comprises a box body and a cover body; the box body and the cover body surround to define a microwave transmission channel, and the microwave transmission channel is L-shaped;

the cover body comprises a first cover plate and a second cover plate which are perpendicular to each other, and the connection position of the first cover plate and the second cover plate is a bending angle of the microwave transmission channel;

an accommodating space is arranged between the first cover plate and the second cover plate at the outer side of the microwave transmission channel, and the accommodating space is used for accommodating the microwave generating device;

the second cover plate is arranged in the vertical direction, and a microwave inlet for inserting an antenna cap of the microwave generating device is formed in the second cover plate.

2. The waveguide of claim 1, wherein the height of the second cover plate is greater than or equal to 76 millimeters.

3. The waveguide of claim 1, wherein the box comprises a first plate, a second plate, a third plate, and a fourth plate, wherein the first plate, the second plate, and the third plate are connected in sequence;

the first plate body is connected with the second cover plate; the first cover plate and the third cover plate are oppositely arranged;

the fourth plate body is connected with the first cover plate, and a microwave outlet is arranged between the fourth plate body and the third plate body.

4. A waveguide according to claim 3, wherein the box further comprises two curved plates; the two bending plates are respectively arranged at two opposite sides of the cover body.

5. A waveguide according to claim 3, wherein the second cover plate and the second plate are arranged in parallel at a distance of greater than or equal to 41 mm.

6. A waveguide according to claim 3, wherein the first cover plate is provided with a mounting hole, and the accommodating space is provided between the mounting hole and the second cover plate.

7. A microwave cooking appliance, comprising:

the box body is internally provided with a cooking cavity;

a microwave generating device; and

the waveguide of any one of claims 1 to 6, through which the microwave generating device communicates with the cooking cavity.

8. The microwave cooking appliance according to claim 7, wherein the microwave generating device is provided in the accommodating space, or the microwave generating device is provided at one of both sides in the waveguide width direction and an upper side of the waveguide.

9. The microwave cooking appliance of claim 7, further comprising a stirring device mounted on the first cover plate, the stirring device and the microwave outlet of the waveguide being disposed in correspondence;

the accommodating space is arranged between the stirring device and the second cover plate.

10. The microwave cooking appliance of claim 7, wherein a distance between the inflection angle and an antenna cap of the microwave generating device is greater than or equal to 30 millimeters.