CN216357382U

CN216357382U - Microwave cooking appliance

Info

Publication number: CN216357382U
Application number: CN202122875743.1U
Authority: CN
Inventors: 李小兵; 刘奇; 邓雁青
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Guangdong Witol Vacuum Electronic Manufacture Co Ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-04-19
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a microwave cooking appliance, comprising: a cabinet having a cooking cavity therein; the microwave generating device is arranged in the box body and is provided with a coaxial conversion device, and the coaxial conversion device is arranged in the box body and is used for converting the microwaves generated by the microwave generating device into coaxial signals; the coaxial line is connected with the coaxial conversion device to transmit the coaxial signal; a microwave antenna connected to the coaxial line to feed the coaxial signal into the cooking cavity. The microwave cooking appliance provided by the embodiment of the utility model has the advantages of uniform heating, high space utilization rate and the like.

Description

Microwave cooking appliance

Technical Field

The utility model relates to the technical field of electric appliance manufacturing, in particular to a microwave cooking appliance.

Background

In related art microwave cooking appliances such as microwave ovens, microwaves generated by a magnetron are guided into a cooking cavity through a waveguide for cooking, but the distribution of the microwaves in the cooking cavity is very uneven, resulting in uneven heating effect.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a microwave cooking appliance which has the advantages of uniform heating, high space utilization rate and the like.

To achieve the above object, there is provided a microwave cooking appliance according to an embodiment of the present invention, including: a cabinet having a cooking cavity therein; the microwave generating device is arranged in the box body; the coaxial conversion device is arranged in the box body and converts the microwaves generated by the microwave generation device into coaxial signals; the coaxial line is connected with the coaxial conversion device to transmit the coaxial signal; a microwave antenna connected to the coaxial line to feed the coaxial signal into the cooking cavity.

The microwave cooking appliance provided by the embodiment of the utility model has the advantages of uniform heating, high space utilization rate and the like.

In addition, the microwave cooking appliance according to the above embodiment of the present invention may further have the following additional technical features:

according to one embodiment of the utility model, at least a portion of the microwave antenna extends into the cooking chamber.

According to one embodiment of the utility model, the microwave antenna is located adjacent to the center of the surface.

According to one embodiment of the utility model, the microwave antennas are multiple and arranged at intervals.

According to one embodiment of the present invention, a plurality of the microwave antennas are provided on the top wall of the cooking chamber.

According to one embodiment of the present invention, a plurality of the microwave antennas are respectively located on different surfaces of the cooking cavity.

According to one embodiment of the utility model, the microwave antenna is a directional antenna.

According to one embodiment of the utility model, the microwave generating means and the coaxial converting means are connected by a waveguide.

According to one embodiment of the utility model, the microwave generating means and the coaxial switching means are both located at the left side of the cooking cavity or both located at the right side of the cooking cavity.

According to one embodiment of the utility model, the coaxial line has a length of 10-500 cm.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a microwave cooking appliance according to an embodiment of the present invention.

Fig. 2 is an exploded view of a microwave cooking appliance according to an embodiment of the present invention.

Reference numerals: the microwave cooking appliance comprises a microwave cooking appliance 1, a box body 10, a cooking cavity 11, a microwave generating device 20, a coaxial converting device 30, a support 31, a coaxial line 40, a microwave antenna 50 and a waveguide tube 60.

Detailed Description

The present application is based on the discovery and recognition by the inventors of the following facts and problems:

Specifically, in related art microwave cooking appliances such as microwave ovens, some microwave cooking appliances drive food to rotate by arranging a turntable, and the rotating food is heated by microwaves, so that even if the microwaves are not uniformly distributed, a certain heating uniformity can be ensured; other microwave cooking utensil stirs the microwave through setting up stirring antenna, makes the microwave can be more even distribution in the cooking chamber to improve the heating homogeneity.

But these two kinds of mode carousels all need occupy a large amount of spaces with stirring antenna, if control the holistic volume of microwave cooking utensil, can influence the volume of culinary art chamber, if guarantee the volume of culinary art chamber, can increase microwave cooking utensil's whole volume.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.

A microwave cooking appliance 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, a microwave cooking appliance 1 according to an embodiment of the present invention includes a cabinet 10, a microwave generating device 20, a coaxial converting device 30, a coaxial line 40, and a microwave antenna 50.

The cabinet 10 has a cooking cavity 11 therein. The microwave generating device 20 is provided in the cabinet 10. The coaxial converter 30 is provided in the case 10 and converts the microwave generated by the microwave generator 20 into a coaxial signal. Coaxial line 40 is connected to coaxial switching arrangement 30 for transmitting the coaxial signal. A microwave antenna 50 is connected to the coaxial line 40 to feed the coaxial signal into the cooking chamber 11.

Specifically, when the microwave cooking appliance 1 is operated, the microwave generating device 20 generates microwaves, the coaxial converting device 30 converts the microwaves generated by the microwave generating device 20 into coaxial signals, the coaxial signals are transmitted from the coaxial converting device 30 to the microwave antenna 50 through the coaxial line 40, and finally the coaxial signals are fed into the cooking cavity 11 by the microwave antenna 50 to cook food in the cooking cavity 11.

According to the microwave cooking appliance 1 of the embodiment of the present invention, the coaxial converting device 30, the coaxial line 40 and the microwave antenna 50 are arranged, so that the microwave generated by the microwave generating device 20 is firstly converted into the coaxial signal, and then is transmitted to the microwave antenna 50 and fed into the cooking cavity 11, so as to heat and cook the food by using the coaxial microwave signal.

Moreover, since the microwave cooking appliance 1 heats and cooks food through the coaxial microwave signal fed from the microwave antenna 50, the coverage of the microwave is more uniform, and compared with the microwave cooking appliance in the related art, the problem of uneven heating caused by uneven coverage of the microwave can be avoided, so that the heating uniformity of the microwave cooking appliance 1 is improved.

In addition, because microwave cooking utensil 1 heats the culinary art through the coaxial microwave signal of microwave antenna 50 feed-in, the homogeneity of the coverage of microwave can be guaranteed, need not additionally to set up the technical scheme that improves heating homogeneity such as carousel and stirring antenna, compare the microwave cooking utensil who adopts carousel and stirring antenna among the correlation technique, can save the installation and the part cost of carousel and stirring antenna, and can save the installation space of carousel and stirring antenna, improve the utilization ratio of microwave cooking utensil 1 space, be convenient for improve the volume of culinary art chamber 11, be convenient for control microwave cooking utensil 1's whole volume, can also simplify the assembly degree of difficulty, improve the assembly success rate once.

Further, because microwave cooking utensil 1 heats the culinary art through the coaxial microwave signal of microwave antenna 50 feed-in to food, the coaxial signal compares the microwave signal of direct leading-in among the correlation technique, and the modulation is more easily, is more convenient for adjust characteristics such as phase place, amplitude, break-make of signal to improve heating flexibility and heating effect, can reach higher power moreover, improve microwave cooking utensil 1's heating power, be convenient for improve microwave cooking utensil 1's heating effect and heating efficiency.

Therefore, the microwave cooking appliance 1 according to the embodiment of the present invention has the advantages of uniform heating, high space utilization rate, and the like.

In some embodiments of the present invention, as shown in fig. 1 and 2, a microwave cooking appliance 1 according to an embodiment of the present invention includes a cabinet 10, a microwave generating device 20, a coaxial converting device 30, a coaxial line 40, and a microwave antenna 50.

Specifically, as shown in fig. 1 and 2, a fitting area is formed between the outer surface of the cabinet 10 and the cooking chamber 11. The microwave generating means 20, the coaxial transforming means 30 and the coaxial line 40 are arranged in said assembly area.

Advantageously, as shown in fig. 1 and 2, at least a portion of the microwave antenna 50 extends into the cooking chamber 11. Specifically, a portion of the microwave antenna 50 extends into the cooking chamber 11 and another portion is located within the mounting area. This facilitates the microwave antenna 50 to feed a coaxial signal into the cooking chamber 11, which facilitates the securing of the heating effect in the cooking chamber 11.

Advantageously, as shown in figures 1 and 2, the microwave antenna 50 is located adjacent to the center of the surface. For example, the microwave antenna 50 may be provided at the center of the top wall of the cooking chamber 11 (up-down, left-right, and front-back directions are shown by arrows in the drawings and are merely for convenience of description, and are not a limitation on the actual arrangement direction). This makes it possible to distribute the coaxial microwave signal fed from the microwave antenna 50 into the cooking cavity 11 more uniformly, and further improve the heating uniformity of the microwave cooking appliance 1.

Optionally, the microwave antenna 50 is plural and spaced apart from each other. Thus, coaxial microwave signals can be fed into the cooking cavity 11 by using the plurality of microwave antennas 50, which is convenient for improving the heating efficiency of the cooking cavity 11 and the heating uniformity of the cooking cavity 11.

In some embodiments of the present invention, a plurality of microwave antennas 50 are provided on the top wall of the cooking chamber 11. This allows the coaxial microwave signals to be fed downward from the top of the cooking chamber 11 through the plurality of microwave antennas 50 to heat the food placed at the bottom of the cooking chamber 11, further improving the uniformity of heating the food.

In some embodiments of the present invention, a plurality of microwave antennas 50 may be disposed at intervals on the top wall of the cooking chamber 11 along the length direction of the cooking chamber 11. This may facilitate improved uniformity of heating of the food.

In other embodiments of the present invention, a plurality of microwave antennas 50 may be arrayed on the top wall of the cooking chamber 11. This may also facilitate improved uniformity of heating of the food.

Further, the microwave antennas 50 may be four.

In other embodiments of the present invention, a plurality of microwave antennas 50 are respectively located on different surfaces of the cooking chamber 11. For example, one or more microwave antennas 50 are provided on each of the top, left, right, bottom and rear walls of the cooking chamber 11. Thus, coaxial microwave signals can be fed into the cooking cavity 11 from different directions by the plurality of microwave antennas 50, so that the uniformity of microwave distribution in the cooking cavity 11 is improved, and the uniformity of heating is improved.

Advantageously, the microwave antenna 50 is a directional antenna. This may facilitate the microwave antenna 50 to concentrate the coaxial microwave signal at the food placement location, improve the heating effect, or achieve dynamic adjustment, improve the flexibility of heating.

Specifically, as shown in fig. 1 and 2, the microwave generating device 20 and the coaxial converting device 30 are connected through a waveguide 60. This facilitates the transmission of the microwaves generated by the microwave generating means 20 to the coaxial transforming means 30, facilitating the arrangement of the microwave generating means 20 and the coaxial transforming means 30.

Of course, the waveguide 60 can be omitted if the microwave generating device 20 and the coaxial converting device 30 can satisfy the arrangement requirement in the microwave cooking appliance 1.

More specifically, as shown in fig. 1 and 2, the microwave generating device 20 and the coaxial converting device 30 are both located at the left side of the cooking cavity 11 or both located at the right side of the cooking cavity 11. Thus, the structure in the microwave cooking appliance 1 can be more compact, and the space utilization rate of the microwave cooking appliance 1 is improved.

Optionally, the coaxial line 40 has a length of 10-500 cm; the working frequency is DC-3G; the characteristic impedance is 50 Ω; the voltage standing wave ratio is less than or equal to 1.3. This may facilitate ensuring the transmission capability of the coaxial line 40.

Specifically, as shown in fig. 2, the holder 31 is welded to the housing 10, and the waveguide 60 is mounted on the holder 31 by a screw fastener. The coaxial switching device 30 is connected to the waveguide 60 by a threaded fastener. The microwave generating device 20 is mounted on the waveguide 60 by means of threaded fasteners. The microwave antenna 50 is mounted on the cooking chamber 11 by means of threaded fasteners. This may facilitate assembly of the microwave cooking appliance 1.

The microwave generating device 20 is a magnetron or a solid state microwave source.

Other constructions and operations of the microwave cooking appliance 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A microwave cooking appliance, comprising:

a cabinet having a cooking cavity therein;

the microwave generating device is arranged in the box body;

the coaxial conversion device is arranged in the box body and converts the microwaves generated by the microwave generation device into coaxial signals;

the coaxial line is connected with the coaxial conversion device to transmit the coaxial signal;

a microwave antenna connected to the coaxial line to feed the coaxial signal into the cooking cavity.

2. The microwave cooking appliance of claim 1, wherein at least a portion of the microwave antenna extends into the cooking cavity.

3. A microwave cooking appliance according to claim 1, wherein the microwave antenna is located proximate the center of the surface.

4. The microwave cooking appliance of claim 1, wherein the microwave antenna is plural and spaced apart from each other.

5. The microwave cooking appliance of claim 4, wherein a plurality of the microwave antennas are each provided on a top wall of the cooking cavity.

6. The microwave cooking appliance of claim 4, wherein a plurality of the microwave antennas are located on different surfaces of the cooking cavity, respectively.

7. Microwave cooking appliance according to claim 1, characterized in that the microwave antenna is a directional antenna.

8. The microwave cooking appliance of claim 1, wherein the microwave generating means and the coaxial converting means are connected by a waveguide.

9. Microwave cooking appliance according to claim 1, characterized in that the microwave generating means and the coaxial switching means are both located at the left side of the cooking cavity or both located at the right side of the cooking cavity.

10. Microwave cooking appliance according to claim 1, characterized in that the coaxial line has a length of 10-500 cm.