Microwave cooking equipment

Abstract

The present invention discloses a microwave cooking device, which includes a box, a plate-shaped member, a microwave generating device and a radiating device. A cooking cavity is provided in the box, the plate-shaped member is used to constitute a part of the cooking cavity, the microwave generating device is provided in the box and is used to generate microwaves, the plate-shaped member is provided with at least one wave-transmitting portion for microwaves to be permeable, the radiating device is provided in the box and is used to convert the microwaves generated by the microwave generating device into spherical waves and radiate them to the plate-shaped member, and the wave-transmitting portion is used to convert the spherical waves radiated to the plate-shaped member into plane waves and enter the cooking cavity. When cooking food, the microwave generating device is started and generates microwaves, and the radiating device radiates the microwaves to the plate-shaped member in the form of spherical waves. When passing through the wave-transmitting portion, the propagation form of the microwaves is converted into plane waves and enters the cooking cavity, and the plane waves are more evenly distributed in the cooking cavity, thereby ensuring that the food is evenly heated during cooking, improving the cooking quality of the food, and improving the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking devices, and in particular to a microwave cooking device. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] Microwave heating is widely used in food and related fields due to its high efficiency, instantaneous heating and small thermal inertia. When a microwave cooking device (such as a microwave oven, etc.) heats food, it generates microwaves, which act on the food placed in the cooking cavity. The polar molecules or charged particles inside the food interact with each other and move violently, causing the polar molecules / charged particles to collide and rub against each other to generate heat, thereby cooking the food.

[0004] In the prior art, after microwaves enter the cooking cavity, the microwaves are unevenly distributed in the cooking cavity, and the food cannot be heated evenly, which easily leads to poor food cooking quality and reduces the user experience. Summary of the invention

[0005] The object of the present invention is to at least solve the problem of uneven microwave distribution in the cooking cavity. This object is achieved by the following technical solutions:

[0006] The present invention provides a microwave cooking device, which comprises:

[0007] A box body, wherein a cooking cavity is provided in the box body;

[0008] A microwave generating device, which is disposed in the box and is used to generate microwaves;

[0009] A plate-shaped member, the plate-shaped member is used to form part of the cooking cavity, and the plate-shaped member is provided with at least one wave-transmitting portion for the microwave to be transparent;

[0010] A radiation device is arranged in the box and is used to convert the microwaves generated by the microwave generating device into spherical waves and radiate them to the plate-like member. The wave-transmitting portion is used to convert the spherical waves radiated to the plate-like member into plane waves that enter the cooking cavity.

[0011] According to the microwave cooking device of the present invention, the microwave generating device and the radiating device are both arranged on the outside of the cooking cavity, and the radiating device is arranged corresponding to the plate-like member. When food is cooked, the microwave generating device is started and generates microwaves, and the microwaves are transmitted to the radiating device. The radiating device emits the microwaves to the plate-like member in the form of spherical waves. When the microwaves pass through the wave-transmitting portion, the propagation form of the microwaves is converted into plane waves, and the microwaves enter the cooking cavity in the form of plane waves. The microwaves propagating in the cooking cavity in the form of plane waves are more evenly distributed, ensuring that the food is heated evenly during the cooking process, thereby improving the cooking quality of the food, and improving the user experience.

[0012] In addition, the microwave cooking device according to the present invention may also have the following additional technical features:

[0013] In some embodiments of the present invention, the wave-transmitting portion is a rectangular structure.

[0014] In some embodiments of the present invention, there are multiple wave-transmitting parts, and the wave-transmitting parts are arranged on the plate-like member at intervals.

[0015] In some embodiments of the present invention, the plate-like member comprises:

[0016] A substrate portion, wherein the substrate portion is a wave-transmitting structure;

[0017] The strip portions are non-wave-transmitting structures and are multiple in number. The strip portions are arranged on the substrate portion at intervals, and the wave-transmitting portion is formed between two adjacent strip portions.

[0018] In some embodiments of the present invention, one end of the strip portion is aligned with one side of the substrate portion, and the other end of the strip portion is aligned with the other side of the substrate portion;

[0019] And / or the strip portion is a metal part.

[0020] In some embodiments of the present invention, the wave-transmitting portion is a groove-shaped structure formed on the plate-shaped member.

[0021] In some embodiments of the present invention, one end of the groove-like structure is connected to one side of the plate-like member, and the other end of the groove-like structure is connected to the other side of the plate-like member;

[0022] And / or there are multiple groove-like structures, and the groove-like structures are arranged at intervals on the plate-like member.

[0023] In some embodiments of the present invention, the plate-shaped member is located at the bottom of the cooking cavity.

[0024] In some embodiments of the present invention, the microwave cooking device further comprises a transmission device, which is disposed in the box and is used to transmit the microwaves generated by the microwave generating device to the radiation device.

[0025] In some embodiments of the present invention, the transmission device is a waveguide or a coaxial line;

[0026] And / or the radiation unit is any one of a slot antenna, a patch antenna, a horn antenna or a dipole antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0028] Figure 1 The structure diagram of a microwave cooking device according to an embodiment of the present invention is schematically shown;

[0029] Figure 2 for Figure 1 A schematic structural diagram of a plate-shaped member of a microwave cooking device shown in ;

[0030] Figure 3 for Figure 2 A schematic structural diagram of a first embodiment of a plate-like member shown in FIG.

[0031] Figure 4 for Figure 2 A schematic structural diagram of a second embodiment of a plate-like member is shown in FIG.

[0032] The reference numerals are as follows:

[0033] 100 is a microwave cooking device;

[0034] 10 is a box body;

[0035] 11 is a cooking cavity;

[0036] 20 is a plate-like member;

[0037] 21 is a substrate portion;

[0038] 22 is a strip portion;

[0039] 23 is a wave-transmitting portion;

[0040] 30 is a microwave generating device;

[0041] 40 is a transmission device;

[0042] 50 is a radiation device;

[0043] 60 is a control device. DETAILED DESCRIPTION

[0044] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0045] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0046] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0047] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0048] like Figures 1 to 4 As shown, according to an embodiment of the present invention, a microwave cooking device 100 is proposed. The microwave cooking device 100 includes a box body 10, a plate-shaped member 20, a microwave generating device 30 and a radiation device 50. A cooking cavity 11 is provided in the box body 10. The plate-shaped member 20 is used to constitute a part of the cooking cavity 11. The microwave generating device 30 is arranged in the box body 10 and is used to generate microwaves. At least one wave-transmitting portion 23 for microwaves to be transparent is provided on the plate-shaped member 20. The radiation device 50 is arranged in the box body 10 and is used to convert the microwaves generated by the microwave generating device 30 into spherical waves and radiate them to the plate-shaped member 20. The wave-transmitting portion 23 is used to convert the spherical waves radiated to the plate-shaped member 20 into plane waves that enter the cooking cavity 11.

[0049] Specifically, the microwave generating device 30 and the radiation device 50 are both arranged on the outside of the cooking cavity 11. The radiation device 50 is arranged corresponding to the plate-like member 20. When food is cooked, the microwave generating device 30 is started and generates microwaves, which are transmitted to the radiation device 50. The radiation device 50 emits the microwaves in the form of spherical waves toward the plate-like member 20. When the microwaves pass through the wave-transmitting portion 23, the propagation form of the microwaves is converted into plane waves, and the microwaves enter the cooking cavity 11 in the form of plane waves. The microwaves propagating in the cooking cavity 11 in the form of plane waves are more evenly distributed, ensuring that the food is heated evenly during cooking, thereby improving the cooking quality of the food and enhancing the user experience.

[0050] It should be understood that the plate-like member 20 constitutes part of the cooking cavity 11, that is, the plate-like member 20 is used to form the cooking cavity 11 and one side of the plate-like member 20 forms the inner surface of the cooking cavity 11, and the position generated by the microwave generating device 30 enters the cooking cavity 11 through the wave-transparent portion 23 of the plate-like member 20 to achieve microwave heating of the food in the cooking cavity 11. By having the wave-transparent portion 23, the plate-like member 20 can effectively control the position where the microwaves enter the cooking cavity 11 and the propagation mode of the microwaves, so that the microwaves entering the cooking cavity 11 can evenly heat the food in the cooking cavity 11, thereby improving the quality of the food and enhancing the user experience.

[0051] It should be pointed out that the radiation device 50 is arranged corresponding to the plate-like member 20. The microwaves generated by the microwave generating device 30 are transmitted to the radiation device 50. When the microwaves propagate along the radiation device 50, the microwaves are emitted to the plate-like member 20 at an emission point of the radiation device 50. The propagation form of the microwaves is converted into spherical waves. When the spherical waves pass through the wave-transmitting portion 23 on the plate-like member 20, with reference to the diffraction principle of light, the spherical waves are converted into plane waves and enter the cooking cavity 11, thereby ensuring the uniformity of the microwaves in the cooking cavity 11 and uniformly heating the food to improve the quality of the food.

[0052] It is further understood that the wave-transmitting portion 23 is a rectangular structure. Specifically, the microwaves generated by the microwave generating device 30 are propagated to the plate-like member 20 in the form of spherical waves after passing through the radiation device 50. When the microwaves pass through the wave-transmitting portion 23, the propagation form of the microwaves is converted into plane waves. Since the wave-transmitting portion 23 is a rectangular structure, when the microwaves pass through the wave-transmitting portion 23, the effect of converting the spherical waves into plane waves is better, which further improves the uniformity of the microwaves entering the cooking cavity 11, so that the quality of food cooking is further improved, thereby improving the user experience.

[0053] In the present invention, the wave-transmitting portion 23 is a long rectangular structure, which further improves the effect of converting spherical waves into plane waves, so that the uniformity of the microwaves entering the cooking cavity 11 is further improved.

[0054] In other embodiments, the wave-transmitting structure is circular, triangular or other polygonal shapes. By adjusting the shape of the wave-transmitting structure, the requirements of different cooking devices for the form of microwaves entering the cooking cavity 11 can be further met.

[0055] Furthermore, if Figures 1 to 4As shown, there are multiple wave-transmitting parts 23, and each wave-transmitting part 23 is arranged at intervals on the plate-like member 20. Specifically, when the radiation device 50 transmits the microwaves generated by the microwave generating device 30 to the plate-like member 20, the microwaves can enter the cooking cavity 11 through each wave-transmitting part 23, thereby improving the intensity of the microwaves entering the cooking cavity 11, thereby improving the cooking efficiency of the food in the cooking cavity 11, reducing the waiting time of the user, and further improving the user experience. In addition, by arranging each wave-transmitting part 23 at intervals on the plate-like member 20, when the microwaves enter the cooking cavity 11 through each wave-transmitting part 23, the uniformity of the microwaves in the cooking cavity 11 is further guaranteed, so that the heating and cooking effect of the food is further improved.

[0056] It should be pointed out that the plate-like member 20 constitutes a part of the cooking cavity 11, and the side of the plate-like member 20 facing the cooking cavity 11 forms the inner wall surface of the cooking cavity 11. The various wave-transparent portions 23 are distributed according to the intensity of the microwaves passing through the plate, that is, the number of wave-transparent portions 23 is reduced at locations with high microwave intensity, and the number of wave-transparent portions 23 is increased at locations with low microwave intensity, thereby further ensuring the uniformity of the microwaves entering the cooking cavity 11 and achieving a better microwave heating effect on food.

[0057] In some embodiments, Figures 1 to 3 As shown, the plate-like member 20 includes a substrate portion 21 and a strip portion 22. The substrate portion 21 is a wave-transmitting structure, and the strip portions 22 are non-wave-transmitting structures and are multiple in number. Each strip portion 22 is arranged at intervals on the substrate portion 21, and a wave-transmitting portion 23 is formed between two adjacent strip portions 22. Specifically, the substrate portion 21 constitutes a part of the cooking cavity 11, and the multiple strip portions 22 are arranged at intervals on the substrate portion 21. When the radiation device 50 transmits the microwave generated by the microwave generating device 30 to the plate-like member 20, the microwave can pass through the body of the substrate portion 21 located between two adjacent strip portions 22 and enter the cooking cavity 11. When the microwave passes through the body between two adjacent strip portions 22, the propagation form of the microwave is converted into a plane wave, so that the uniformity of entering the cooking cavity 11 is better, so as to achieve a better cooking effect of the food. In addition, the overall structure of the plate-like member 20 is simple, and the manufacturing cost is low, which effectively reduces the manufacturing cost of the microwave cooking device 100.

[0058] It should be understood that the strip portion 22 is a non-wave-transparent structure, that is, a wave-blocking material. When microwaves propagate onto the strip portion 22, the strip portion 22 prevents the microwaves from propagating into the cooking cavity 11 through the position of the strip portion 22, thereby effectively ensuring the conversion effect of the microwave propagation mode, and further ensuring the uniformity of the microwaves entering the cooking cavity 11.

[0059] It should be pointed out that if Figure 2 and Figure 3As shown, in the present invention, a plurality of strip portions 22 are arranged in parallel and at intervals on the substrate portion 21, thereby forming a plurality of wave-transmitting portions 23 parallel to each other on the substrate portion 21. The substrate portion 21 constitutes a portion of the cooking cavity 11, thereby increasing the area of ​​the cooking cavity 11 covered by the wave-transmitting portion 23, and further improving the uniformity of entering the cooking cavity 11.

[0060] In addition, the strip portion 22 cooperates with the substrate portion 21 by bonding, welding, etc., thereby ensuring the connection strength between the strip portion 22 and the substrate portion 21, so that the plate-like member 20 has a better effect of converting the microwave propagation mode.

[0061] In addition, each strip portion 22 is a rectangular structure, and the size (width) can be the same or different. The width of the strip portion 22 is adjusted to adjust the amplitude of the microwave, and the position of the strip portion 22 is adjusted to adjust the phase of the microwave, so that the microwave entering the cooking cavity 11 is more uniform and stable, thereby improving the quality and effect of heating and cooking food.

[0062] Furthermore, if Figure 2 and Figure 3 As shown, one end of the strip portion 22 is aligned with one side of the substrate portion 21, and the other end of the strip portion 22 is aligned with the other side of the substrate portion 21. Specifically, the strip portion 22 is arranged across the entire substrate portion 21, so that the wave-transmitting portion 23 formed between two adjacent strip portions 22 spans the entire substrate portion 21, and the substrate portion 21 constitutes a part of the cooking cavity 11. When the microwaves from the radiation device 50 enter the cooking cavity 11 through the wave-transmitting portion 23, the amount of microwaves entering the cooking cavity 11 is increased, so that the density of microwaves in the cooking cavity 11 is greater, thereby improving the cooking efficiency.

[0063] It should be understood that, since the wave-transmitting portion 23 formed between two adjacent strip portions 22 spans across the entire substrate portion 21 , the area covered by the wave-transmitting portion 23 in the cooking cavity 11 is increased, further improving the uniformity of entry into the cooking cavity 11 .

[0064] Specifically, the strip portion 22 is a metal part. The strip portion 22 of the metal part has a good wave blocking effect, so that microwaves are transmitted into the cooking cavity 11 only from the wave-transmitting portion 23 formed by two adjacent strip portions 22, further improving the effect of the plate-like member 20 on converting microwaves from spherical waves to plane waves, so that the uniformity of the microwaves entering the cooking cavity 11 is further improved.

[0065] In other embodiments, the strip portion 22 is made of ceramics, which has a low manufacturing cost and can further reduce the manufacturing cost of the product.

[0066] In some embodiments, Figure 1 and Figure 4As shown, the wave-transmitting portion 23 is a groove-shaped structure formed on the plate-shaped member 20. Specifically, the plate-shaped member 20 is a wave-transmitting member. By setting the plate-shaped member 20 to a certain thickness, microwaves are blocked. By providing the groove-shaped structure on the plate-shaped member 20, the thickness of the plate-shaped member 20 is reduced, and microwaves can be transmitted to the cooking cavity 11 through the position of the groove-shaped structure to achieve heating and cooking of food. By providing the wave-transmitting portion 23 by providing the groove-shaped structure on the plate-shaped member 20, the structure of the plate-shaped member 20 is further simplified, so that the manufacturing cost of the plate-shaped member 20 is reduced, and the manufacturing cost of the microwave cooking device 100 is further reduced.

[0067] It should be noted that the cross-sectional shape of the groove structure is a triangle, a rectangle, a C-shape or other polygons, which will not be described in detail in the present invention.

[0068] Further, one end of the groove structure is connected to one side of the plate-like member 20, and the other end of the groove structure is connected to the other side of the plate-like member 20. Specifically, the groove structure is arranged across the entire plate-like member 20, so that the wave-transmitting portion 23 spans the entire plate-like member 20, and the plate-like member 20 constitutes a part of the cooking cavity 11. When the microwaves from the radiation device 50 enter the cooking cavity 11 through the wave-transmitting portion 23, the amount of microwaves entering the cooking cavity 11 is increased, so that the density of microwaves in the cooking cavity 11 is greater, thereby improving the cooking efficiency.

[0069] It should be understood that, since the groove-like structure spans across the entire plate-like member 20 , the area of ​​the wave-transmitting portion 23 covering the cooking cavity 11 is increased, further improving the uniformity of entering the cooking cavity 11 .

[0070] Specifically, Figure 4 As shown, there are multiple groove structures, and each groove structure is arranged at intervals on the plate-like member 20. Multiple groove structures are arranged in parallel and at intervals on the plate-like member 20, so that multiple wave-transmitting portions 23 parallel to each other are formed on the plate-like member 20. The plate-like member 20 constitutes a part of the cooking cavity 11, which increases the area of ​​the cooking cavity 11 covered by the wave-transmitting portion 23, and further improves the uniformity of entering the cooking cavity 11.

[0071] Furthermore, the plate-shaped member 20 is located at the bottom of the cooking cavity 11. Specifically, Figure 1 As shown, in the present invention, the plate-like member 20 constitutes the entire bottom surface of the cooking cavity 11, that is, the plate-like member 20 is the bottom plate of the cooking cavity 11. The structure and arrangement of the plate-like member 20 further improve the intensity of microwaves entering the cooking cavity 11, while ensuring that microwaves enter the cooking cavity 11 in the form of plane waves, thereby further ensuring the uniformity of microwaves in the cooking cavity 11.

[0072] Furthermore, if Figure 1As shown, the microwave cooking device 100 also includes a transmission device 40, which is arranged in the box body 10 and is used for transmitting microwaves. The transmission device 40 is arranged in the box body 10 and is used to transmit the microwaves generated by the microwave generating device 30 to the radiation device 50. Specifically, in the present invention, the box body 10 includes an outer shell and an inner cavity, the outer shell is arranged at an interval on the outside of the inner cavity, and a accommodating space is formed between the outer shell and the inner cavity, the accommodating space is located on one side of the inner cavity of the box body 10 and extends to the bottom of the inner cavity, the accommodating space is used for the installation of the microwave generating device 30 and the transmission device 40, the plate-shaped member 20 is the bottom plate of the inner cavity and constitutes the bottom surface of the inner cavity, the radiation device 50 is arranged in the installation space, and the radiation device 50 is arranged corresponding to the plate-shaped member 20, the microwave generating device 30 is located on the side of the inner cavity, and one end of the transmission device 40 is connected to the microwave generating device 30. The microwave generating device 30 is connected, and the other end of the transmission device 40 is connected to the radiation device 50. The microwave generating device 30 is started to generate microwaves. The microwaves reach the radiation device 50 through the transmission device 40. The radiation device 50 propagates the microwaves to the plate-like member 20 in the form of spherical waves. After the microwaves pass through the wave-transmitting portion 23 of the plate-like member 20, the spherical waves are converted into plane waves, so that the microwaves propagate into the cooking cavity 11 in the form of plane waves, making the microwaves entering the cooking cavity 11 more uniform and stable, further ensuring the cooking quality of food by the microwave cooking equipment 100, and effectively improving the user experience.

[0073] It should be pointed out that if Figure 1 As shown, the microwave cooking device 100 further includes a control device 60, which is disposed in the housing 10 and connected to the microwave generating device 30. When food needs to be cooked, the user places the food to be cooked in the cooking cavity 11 of the housing 10, and starts the microwave generating device 30 and generates microwaves by operating the control device 60. The microwaves are transmitted to the radiation device 50 through the transmission device 40, and the radiation device 50 transmits the microwaves to the plate-shaped member 20 in the form of spherical waves. After the microwaves pass through the wave-transmitting portion 23 of the plate-shaped member 20, the spherical waves are converted into plane waves, so that the microwaves are transmitted to the cooking cavity 11 in the form of plane waves to achieve heating and cooking of the food to be cooked. By setting the control device 60, the convenience of human-computer interaction during user use is improved, so that the user experience is effectively improved.

[0074] In addition, the microwave generating device 30 includes a magnetron and a heat sink. The magnetron is used to generate microwaves, and the heat sink is used to dissipate heat from the magnetron. When food needs to be cooked, the user starts the magnetron by operating the control device 60. The magnetron generates microwaves after being powered on, and the heat sink dissipates heat from the magnetron. The microwaves enter the cooking cavity 11 through the transmission device 40, the radiation device 50, and the wave-transmitting portion 23 of the plate-shaped member 20, thereby performing microwave heating on the food in the cooking cavity 11. The heat sink is used to dissipate heat from the magnetron, thereby ensuring stable and efficient operation of the magnetron, and reducing the failure rate of the microwave cooking device. The heat sink is a heat dissipation fan. By powering on the heat dissipation fan, the heat dissipation fan rotates, accelerating heat transfer on the surface of the magnetron, thereby reducing the temperature rise on the surface of the magnetron.

[0075] Furthermore, the transmission device 40 is a waveguide or a coaxial line. Figure 1 As shown, in the present invention, the transmission device 40 is a waveguide, one end of the waveguide cooperates with the microwave generating device 30, and the other end of the waveguide cooperates with the radiation device 50. The microwave generated by the microwave generating device 30 propagates along the waveguide to the radiation device 50, and enters the cooking cavity 11 through the wave-transmitting portion 23 of the plate-shaped member 20. The structure of the waveguide is simple and the manufacturing cost is low, which effectively reduces the manufacturing cost of the microwave cooking device 100.

[0076] In other embodiments, the transmission device 40 is a coaxial line, which is small in size and easy to arrange and install, thereby reducing the space occupied by the installation and facilitating the miniaturization of the microwave cooking device 100.

[0077] Specifically, the radiation unit is any one of a slot antenna, a patch antenna, a horn antenna or a dipole antenna. Figure 1 As shown, in the present invention, the radiation unit is a horn antenna. When the microwave is transmitted to the horn antenna through the transmission device 40, the microwave propagates in the form of a spherical wave under the action of the horn antenna. By using the horn antenna, the conversion effect of the spherical wave is guaranteed, so that the uniformity of the microwave entering the cooking cavity 11 through the wave-transmitting portion 23 is further improved.

[0078] In other embodiments, the radiation unit is any one of a slot antenna, a patch antenna or a dipole antenna, thereby further meeting the assembly requirements of the microwave cooking device 100 .

[0079] In addition, the above-mentioned microwave cooking device is a microwave oven, etc. For the structure of other parts of the microwave cooking device, please refer to the prior art and will not be described in detail here.

[0080] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A microwave cooking device, characterized in that: The microwave cooking device comprises: A box body, wherein a cooking cavity is provided in the box body; A microwave generating device, which is disposed in the box and is used to generate microwaves; A plate-shaped member, the plate-shaped member is used to form part of the cooking cavity, and the plate-shaped member is provided with at least one wave-transmitting portion for the microwave to be transparent; a radiation device, the radiation device being arranged in the box body and being used for converting the microwaves generated by the microwave generating device into spherical waves and radiating them to the plate-like member, the wave-transmitting portion being used for converting the spherical waves radiated to the plate-like member into plane waves and entering the cooking cavity; Among them, the plate-like component includes a substrate portion and a strip portion, the substrate portion is a wave-transmitting structure, the strip portions are non-wave-transmitting structures and are multiple in number, each of the strip portions is arranged on the substrate portion at intervals, and the wave-transmitting portion is formed between two adjacent strip portions; or the wave-transmitting portion is a groove-shaped structure formed on the plate-like component.

2. The microwave cooking device according to claim 1, characterized in that: The wave-transmitting portion is a rectangular structure.

3. The microwave cooking device according to claim 1, characterized in that: There are multiple wave-transmitting parts, and each of the wave-transmitting parts is arranged on the plate-like member at intervals.

4. The microwave cooking device according to claim 1, characterized in that: The plate-like member includes a substrate portion and a strip portion, the substrate portion is a wave-transmitting structure, the strip portions are non-wave-transmitting structures and are multiple in number, the strip portions are arranged on the substrate portion at intervals, the wave-transmitting portion is formed between two adjacent strip portions, one end of the strip portion is aligned with one side of the substrate portion, and the other end of the strip portion is aligned with the other side of the substrate portion.

5. The microwave cooking device according to claim 4, characterized in that: The strip portion is a metal piece.

6. The microwave cooking device according to claim 1, characterized in that: The wave-transmitting portion is a groove-shaped structure formed on the plate-shaped member, one end of the groove-shaped structure is connected to one side of the plate-shaped member, and the other end of the groove-shaped structure is connected to the other side of the plate-shaped member.

7. The microwave cooking device according to claim 6, characterized in that: There are multiple groove-like structures, and each of the groove-like structures is arranged at intervals on the plate-like member.

8. The microwave cooking device according to claim 1, characterized in that: The plate-shaped member is located at the bottom of the cooking cavity.

9. The microwave cooking device according to any one of claims 1 to 8, characterized in that: The microwave cooking device further comprises a transmission device, which is arranged in the box and is used for transmitting the microwaves generated by the microwave generating device to the radiation device.

10. The microwave cooking device according to claim 9, characterized in that: The transmission device is a waveguide or a coaxial line; And / or the radiation unit is any one of a slot antenna, a patch antenna, a horn antenna or a dipole antenna.

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