Lighting device and cooking apparatus

Abstract

The application relates to a lighting device and a cooking device, the lighting device is used for the cooking device, the cooking device comprises an inner container and a microwave device arranged outside the inner container, the microwave device comprises a microwave cavity, one side wall of the microwave cavity facing the inner container is a light-transmitting piece, the lighting device comprises a light source, a light guide column and a shielding piece, wherein: the light source is arranged outside the inner container and the microwave cavity; one end of the light guide column is connected with the light source, and the other end of the light guide column is used for extending into the microwave cavity, so that the light emitted by the light source is conducted to the inner container through the light guide column and the light-transmitting piece; the shielding piece is wrapped around the outer periphery of the part of the light guide column located outside the microwave cavity, and one end of the shielding piece is used for being connected with the microwave cavity. The shielding piece can effectively prevent the microwave in the microwave cavity from leaking through the light guide column, and can also prevent the light emitted by the light source from leaking during the light transmission process in the light guide column, so that the lighting brightness of the lighting device can be ensured while preventing the microwave leakage, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooking appliances, in particular to a lighting device and a cooking device. BACKGROUND

[0002] In a cooking device with a microwave function, such as a steam-baking-microwave all-in-one machine, in order to prevent microwave leakage, a stove lamp is usually arranged outside the inner container and conducts light into the inner container through the mesh structure on the wall of the inner container.

[0003] Although the mesh structure can effectively prevent microwave leakage, it causes light attenuation to a certain extent, resulting in reduced illumination brightness in the inner container. SUMMARY

[0004] Therefore, it is necessary to provide a lighting device and a cooking device, which can prevent microwave leakage and ensure illumination brightness.

[0005] The present application provides a lighting device for a cooking device, the cooking device comprising an inner container and a microwave device arranged outside the inner container, the microwave device comprising a microwave cavity, one side wall of the microwave cavity facing the inner container being a light-transmitting piece, the lighting device comprising: a light source arranged outside the inner container and the microwave cavity; a light guide column, one end of which is connected to the light source and the other end of which is used to extend into the microwave cavity to conduct light emitted by the light source into the inner container through the light guide column and the light-transmitting piece; and a shielding piece, one end of which is used to be connected to the microwave cavity, the shielding piece being wrapped around the outer periphery of the part of the light guide column located outside the microwave cavity.

[0006] In the above lighting device, the light source is arranged outside the inner container and the microwave cavity, so that the environment temperature of the light source is low and the light source is far away from the microwave, avoiding the influence of high temperature or microwave on the normal operation of the light source; the light emitted by the light source is conducted into the inner container through the light guide column and the light-transmitting piece, and the light-transmitting piece of the microwave device is used to conduct light into the inner container, which can reduce the loss of light brightness of the light source; and the shielding piece is wrapped around the outer periphery of the part of the light guide column located outside the microwave cavity, which can effectively prevent the microwave in the microwave cavity from leaking through the light guide column, and also prevent the light emitted by the light source from leaking during the transmission process in the light guide column, so as to prevent microwave leakage while ensuring the illumination brightness of the lighting device and improving the user experience.

[0007] In one embodiment, the light guide column comprises a cylindrical segment located outside the microwave cavity, and the shielding piece comprises a cylindrical part wrapped around the outer periphery of the cylindrical segment.

[0008] In this way, the cylindrical segment and the cylindrical part have simple structures and are easy to process and assemble.

[0009] In one of the embodiments, the inner diameter φ1 and the length H1 of the cylindrical portion satisfy: H1=0.16φ1 2 -0.13φ1+2.2.

[0010] In this way, the shielding effect of the shielding member can be improved, and the microwave in the microwave cavity can be prevented from leaking through the light guide column.

[0011] In one of the embodiments, the cylindrical portion includes a cylindrical segment and a necked segment connected to each other along the length direction of the cylindrical portion, and the inner diameter of the necked segment is smaller than that of the cylindrical segment.

[0012] In this way, the necked segment can effectively reduce the microwave leakage, so that the length of the cylindrical portion can be reduced, and the overall volume of the lighting device can be reduced while ensuring the shielding effect of the shielding member.

[0013] In one of the embodiments, the lighting device further includes a light guide ring arranged in the microwave cavity, the light guide ring includes a light emitting surface abutting the light transmitting member, and a light guide groove is arranged on the side of the light guide ring away from the light emitting surface, and the light guide column is inserted into the light guide groove at the end arranged in the microwave cavity.

[0014] In this way, the light guide ring can convert the point light source emitted by the light source into a large-area annular light to illuminate the inner container, so that the lighting effect of the lighting device can be improved.

[0015] In one of the embodiments, the light guide column includes a tapered segment inserted into the light guide groove, and the size of the tapered segment gradually decreases from the groove opening to the groove bottom of the light guide groove.

[0016] In this way, the outer surface of the tapered segment is arranged obliquely relative to the light emitting surface, so that the light in the tapered segment can be conducted to the light guide ring from the side, thereby ensuring the uniformity of the light emitted from the light emitting surface of the light guide ring.

[0017] In one of the embodiments, the tapered segment is a circular truncated cone or a circular cone, and the angle α of the taper angle of the circular truncated cone or the circular cone satisfies: 35°≤α≤50°.

[0018] In this way, the light in the tapered segment can be conducted to the light guide ring from the side as much as possible, thereby improving the uniformity of the light emitted from the light emitting surface of the light guide ring.

[0019] In one of the embodiments, the light guide ring further includes a reflecting surface, and the lighting device further includes a reflecting member abutting the reflecting surface.

[0020] In this way, the reflecting member can reflect the light rays emitted by the light source towards the light emitting surface, thereby preventing the light rays from leaking during the transmission process in the light guide ring.

[0021] The application also provides a cooking device, which comprises: a liner; a microwave device arranged outside the liner, the microwave device comprising a microwave cavity, one side wall of the microwave cavity being a light-transmitting member; and the lighting device as described above.

[0022] In one of the embodiments, the microwave cavity is provided with a microwave inlet, and the distance L between the center of the microwave inlet and the axis of the shielding member satisfies the condition: L≥1 / 4λ, wherein λ is the wavelength of the microwave.

[0023] In this way, the size of the shielding member can be reduced by increasing the distance between the light guide column and the microwave inlet, thereby reducing the overall volume of the lighting device.

[0024] In one of the embodiments, the cooking device further comprises a wind guide device arranged outside the liner, the wind guide device comprising a wind guide member and a fan, at least part of the fan being arranged in the wind guide member; the light source is arranged in the wind guide member, and one end of the light guide column extends into the wind guide member and is connected to the light source.

[0025] In this way, the light source is arranged as far away from the liner as possible, thereby further reducing the temperature of the environment where the light source is located and avoiding the high temperature from affecting the normal operation of the light source.

[0026] In one of the embodiments, one end of the shielding member away from the microwave cavity extends into the wind guide member, and the lighting device further comprises a sealing member arranged between the shielding member and the wind guide member.

[0027] In this way, the leakage of water vapor in the wind guide member through the gap between the shielding member and the wind guide member can be prevented, thereby avoiding affecting the normal operation of other elements in the cooking device.

[0028] In one of the embodiments, the wind guide member is provided with a space-allowing portion corresponding to the microwave inlet, and the cooking device further comprises a stirring device, the stirring device comprising a driving member and a stirring member connected to each other, the driving member being arranged in the space-allowing portion, and the stirring member extending into the microwave cavity from the microwave inlet; the light source is located on the side of the space-allowing portion away from the fan.

[0029] In this way, the side of the space-allowing portion away from the fan forms a low wind speed area, so that the amount of water vapor contacted by the light guide column is small, and the surface of the light guide column is not easy to form condensed water, and even if the condensed water is formed on the surface of the light guide column, the wind speed in the low wind speed area is small, so the wind blown from the fan is not easy to blow the condensed water on the surface of the light guide column out of the cooking device.

[0030] In one embodiment, the microwave device further includes a microwave channel connected to the microwave inlet, with the center of the microwave inlet as the origin, the microwave conduction direction in the microwave channel as the Y-axis, and a planar rectangular coordinate system established on the top surface of the inner liner, wherein the lighting device is located in the first quadrant of the planar rectangular coordinate system.

[0031] This design minimizes microwave leakage from the light guide post, ensuring that microwaves inside the microwave cavity do not leak through the light guide post. It also reduces the size of the shielding components, thereby reducing the overall volume of the lighting device. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional structural diagram of a cooking device according to one embodiment of the present invention;

[0034] Figure 2 Provided by the present invention Figure 1 A schematic diagram of the cross-sectional structure;

[0035] Figure 3 Provided by the present invention Figure 2 Enlarged structural diagram at point A;

[0036] Figure 4 This is a partial three-dimensional structural diagram of a lighting device according to one embodiment of the present invention;

[0037] Figure 5 This is a partial cross-sectional schematic diagram of a lighting device according to one embodiment of the present invention;

[0038] Figure 6 This is a partial cross-sectional schematic diagram of a lighting device according to another embodiment of the present invention;

[0039] Figure 7 Provided by the present invention Figure 1 A structural diagram from a top-down view;

[0040] Figure 8 Provided by the present invention Figure 7 A schematic diagram of the structure without the air guide device installed.

[0041] Reference signs: 100, lighting device; 1, light source; 2, light guide column; 21, cylindrical segment; 22, tapered segment; 3, shielding member; 31, cylindrical part; 311, cylindrical segment; 312, necked segment; 32, fixed part; 4, sealing member; 5, light guide ring; 51, light exit surface; 52, light guide groove; 53, reflecting surface; 6, reflecting member; 200, inner container; 300, microwave device; 301, microwave cavity; 302, light-transmitting member; 303, microwave inlet; 304, microwave channel; 400, air guide device; 401, air guide member; 402, fan; 403, accommodation part; 500, stirring device; 501, driving member; 502, stirring member. DETAILED DESCRIPTION

[0042] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details, and that the present application is not limited to the specific embodiments disclosed below.

[0043] It should be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or intervening elements can be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element, or intervening elements can be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions as used in the description of the specification are used for explanation purposes only, and do not indicate the only orientation of the embodiments.

[0044] In addition, the terms "first", "second", etc. are used herein only to describe various elements, and do not indicate or imply relative importance or a number of indicated technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0045] In the present application, unless specifically defined and limited otherwise, the first feature is "on", "under", "above" or "over" the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0046] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0047] In cooking equipment with microwave function such as steam baking microwave all-in-one machine, in order to prevent microwave leakage, the oven lamp is usually arranged outside the inner container and conducts light into the inner container through the mesh structure on the wall of the inner container. Although the mesh structure can effectively prevent microwave leakage, it causes light attenuation to a certain extent, resulting in reduced illumination brightness in the inner container.

[0048] In order to solve the above problems, as shown in Figures 1 to 8 The present application first provides a lighting device 100 which can prevent microwave leakage while ensuring illumination brightness.

[0049] As shown in Figures 1 to 3 Specifically, the lighting device 100 is used in cooking equipment, which includes an inner container 200 and a microwave device 300 arranged outside the inner container 200, the microwave device 300 includes a microwave cavity 301, one side wall of the microwave cavity 301 towards the inner container 200 is a light-transmitting piece 302, the lighting device 100 includes a light source 1, a light guide column 2 and a shielding piece 3, wherein: the light source 1 is arranged outside the inner container 200 and the microwave cavity 301; one end of the light guide column 2 is connected with the light source 1, and the other end is used to extend into the microwave cavity 301 to conduct the light emitted by the light source 1 to the inner container 200 through the light guide column 2 and the light-transmitting piece 302; one end of the shielding piece 3 is used to connect with the microwave cavity 301, and the shielding piece 3 covers the outer periphery of the part of the light guide column 2 located outside the microwave cavity 301.

[0050] In the lighting device 100 provided in this embodiment of the invention, the light source 1 is located outside the inner liner 200 and the microwave cavity 301, so that the ambient temperature of the light source 1 is low and it is far away from the microwave, avoiding the impact of high temperature or microwave on the normal operation of the light source 1. The light emitted by the light source 1 is conducted into the inner liner 200 through the light guide column 2 and the light-transmitting component 302. The light is conducted into the inner liner 200 by the light-transmitting component 302 of the microwave device 300, which can reduce the light brightness loss of the light source 1. In addition, the shielding component 3 covers the outer periphery of the part of the light guide column 2 located outside the microwave cavity 301, which can effectively prevent the microwave in the microwave cavity 301 from leaking through the light guide column 2. At the same time, it can also prevent the light emitted by the light source 1 from leaking during the conduction of the light guide column 2. Thus, while preventing microwave leakage, the lighting brightness of the lighting device 100 can be guaranteed, improving the user experience.

[0051] The light-transmitting component 302 can be made of materials such as high borosilicate glass or microcrystalline glass, which have properties such as high temperature resistance, high light transmittance, and high microwave transmittance. The shielding component 3 can be made of stainless steel to ensure the shielding effect of the shielding component 3, and at the same time to ensure that the shielding component 3 will not rust in high-temperature environments, thereby extending the service life of the shielding component 3.

[0052] like Figure 3 and Figure 5 As shown, the light guide post 2 includes a cylindrical section 21 located outside the microwave cavity 301, and the shielding component 3 includes a cylindrical portion 31 covering the outer periphery of the cylindrical section 21. The cylindrical section 21 and the cylindrical portion 31 have simple structures and are easy to process and assemble. The shielding component 3 also includes a fixing portion 32 connected to the cylindrical portion 31. The fixing portion 32 is used to connect to the microwave cavity 301. The fixing portion 32 can be sealed and fixed to the microwave cavity 301 by means of threads, welding, etc., to prevent microwaves inside the microwave cavity 301 from leaking through the gap between the microwave cavity 301 and the fixing portion 32.

[0053] like Figure 5 As shown, the inner diameter φ1 and length H1 of the cylindrical part 31 satisfy: H1 = 0.16φ1 2 -0.13φ1+2.2. In other words, the shielding effect of the shielding component 3 is related to the inner diameter φ1 and length H1 of the cylindrical portion 31. The larger the inner diameter φ1 of the cylindrical portion 31, the larger the required length H1 of the cylindrical portion 31. When the inner diameter φ1 and length H1 of the cylindrical portion 31 satisfy the above relationship, the shielding effect of the shielding component 3 can be improved, ensuring that microwaves within the microwave cavity 301 do not leak through the light guide post 2.

[0054] like Figure 6As shown, since the length of the cylindrical segment 21 is generally greater than or equal to the length H1 of the cylindrical portion 31, in order to avoid the length of the cylindrical segment 21 and the length H1 of the cylindrical portion 31 being too long to cause the overall volume of the lighting device 100 to be too large, along the length direction of the cylindrical portion 31, the cylindrical portion 31 comprises a cylindrical segment 311 and a necked segment 312 connected with each other, and the inner diameter of the necked segment 312 is smaller than the inner diameter of the cylindrical segment 311. The necked segment 312 can effectively reduce the microwave leakage, so as to reduce the length H1 of the cylindrical portion 31 and the overall volume of the lighting device 100 while ensuring the shielding effect of the shielding member 3. Specifically, the number of the cylindrical segment 311 and the necked segment 312 can each be one, and the necked segment 312 is located at one end of the cylindrical segment 311 close to the light source 1 or one end of the cylindrical segment 311 away from the light source 1; or, the number of the cylindrical segment 311 can be two, and the number of the necked segment 312 can be one, and the necked segment 312 is located between the two cylindrical segments 311.

[0055] As shown in FIG. 1, Figure 6 As shown, the inner diameter φ1 of the cylindrical portion 31, the length H1 of the cylindrical portion 31, the inner diameter φ2 of the necked segment 312 and the length H2 of the necked segment 312 satisfy the following relationship: H1 = 0.16φ1 2 -0.13φ1+2.2-2.2H2(φ 1- φ1) / φ1. That is, the smaller the inner diameter φ1 of the cylindrical portion 31 and the greater the length H1 of the cylindrical portion 31, the smaller the required length H1 of the cylindrical portion 31. When the inner diameter φ1 of the cylindrical portion 31, the length H1 of the cylindrical portion 31, the inner diameter φ2 of the necked segment 312 and the length H2 of the necked segment 312 satisfy the above relationship, the length H1 of the cylindrical portion 31 and the overall volume of the lighting device 100 can be reduced as much as possible while ensuring the shielding effect of the shielding member 3.

[0056] As shown in FIG. 1, Figures 3 to 4 As shown, the lighting device 100 further comprises a light guide ring 5 arranged in the microwave cavity 301, the light guide ring 5 comprises a light emitting surface 51 for abutting with the light transmission member 302, and a light guide groove 52 is arranged on the side of the light guide ring 5 away from the light emitting surface 51, and one end of the light guide column 2 inserted into the microwave cavity 301 is inserted into the light guide groove 52. The light emitted by the light source 1 is conducted into the light guide ring 5 through the light guide column 2, and is conducted into the inner container 200 through the light emitting surface 51 of the light guide ring 5 and the light transmission member 302. The light guide ring 5 can convert the point light source emitted by the light source 1 into a large-area annular light to illuminate the inner container 200, so as to improve the lighting effect of the lighting device 100. Wherein, the light guide ring 5 can be a circular ring, or a ring structure in other regular or irregular shapes such as an elliptical shape, a rectangular shape, etc., and the present embodiment does not make specific limitation here.

[0057] As shown in FIG. 1, Figure 3 and Figure 5As shown, the light guide column 2 comprises a tapered section 22 inserted into the light guide groove 52, and the size of the tapered section 22 gradually decreases from the groove opening to the groove bottom of the light guide groove 52. The outer surface of the tapered section 22 is obliquely arranged relative to the light exit surface 51, so that the light in the tapered section 22 can be conducted into the light guide ring 5 from the side, avoiding the light in the light guide ring 5 from being concentrated to exit from the position close to the light guide groove 52, thereby ensuring the uniformity of the light exiting from the light exit surface 51 of the light guide ring 5.

[0058] As shown in the drawings, Figure 5 In an embodiment, the tapered section 22 is frustoconical or conical, and the angle α of the taper angle of the frustoconical or conical shape satisfies: 35°≤α≤50°. The frustoconical and conical shapes are simple in structure and facilitate the processing of the light guide column 2. Moreover, when the angle α of the taper angle of the frustoconical or conical shape satisfies the above range, the light in the tapered section 22 can be conducted into the light guide ring 5 from the side as much as possible, further improving the uniformity of the light exiting from the light exit surface 51 of the light guide ring 5, and enhancing the lighting effect of the lighting device 100. Of course, in other embodiments, the tapered section 22 can also be other regular or irregular shapes such as polygonal pyramids, polygonal frustums, etc., as long as the light in the light guide column 2 can be conducted into the light guide ring 5, and the embodiments of the present application do not make specific limitations here.

[0059] As shown in the drawings, Figures 3 to 5 The light guide ring 5 further comprises a reflecting surface 53, and the lighting device 100 further comprises a reflecting member 6 attached to the outside of the reflecting surface 53. Specifically, except for the light exit surface 51 attached to the light-transmitting member 302, the other surfaces of the light guide ring 5 are all reflecting surfaces 53. The reflecting member 6 can reflect the light emitted from the light guide ring 5 towards the reflecting surface 53 to the light exit surface 51, thereby preventing the light emitted by the light source 1 from leaking during the conduction process in the light guide ring 5, and ensuring the lighting brightness of the lighting device 100.

[0060] As shown in the drawings, Figures 1 to 2 As shown in the drawings, the embodiments of the present application further provide a cooking device comprising an inner container 200, a microwave device 300 and the above-mentioned lighting device 100, and the microwave device 300 is arranged outside the inner container 200. The microwave device 300 comprises a microwave cavity 301, and one side wall of the microwave cavity 301 towards the inner container 200 is a light-transmitting member 302. The microwave device 300 can be arranged at the top of the inner container 200 to ensure the microwave heating effect; of course, the microwave device 300 can also be arranged at the back or both sides of the inner container 200. The microwaves in the microwave cavity 301 can heat the food in the inner container 200 through the light-transmitting member 302, and the shielding member 3 can effectively prevent the microwaves in the microwave cavity 301 from leaking through the light guide column 2. The cooking device can be a steam-baking microwave all-in-one machine, a microwave oven or other devices with microwave function, and the embodiments of the present application do not make specific limitations here.

[0061] As shown in the drawings, Figure 3As shown, the microwave cavity 301 is provided with a microwave inlet 303, and the distance L between the center of the microwave inlet 303 and the axis of the shielding member 3 satisfies: L≥1 / 4λ, wherein λ is the wavelength of the microwave. The wavelength λ of the microwave is approximately 120mm. Since the farther the distance between the light guide column 2 and the microwave inlet 303, the less the microwave leakage from the light guide column 2, the size of the shielding member 3 can be reduced by increasing the distance between the light guide column 2 and the microwave inlet 303, thereby reducing the overall volume of the lighting device 100.

[0062] As shown in the figures, Figures 1 to 2 The cooking device further comprises an air guiding device 400 provided outside the inner container 200, the air guiding device 400 comprising an air guiding member 401 and an air fan 402, at least part of the air fan 402 being provided in the air guiding member 401; the light source 1 is provided in the air guiding member 401, and one end of the light guide column 2 extends into the air guiding member 401 and is connected to the light source 1. The air guiding device 400 can be provided at the top of the inner container 200, and when the microwave device 300 is provided at the top of the inner container 200, the air guiding device 400 is provided at the top of the microwave device 300. Of course, the air guiding device 400 can also be provided at the back or both sides of the inner container 200. When the air fan 402 is working, it can exhaust the gas in the inner container 200 through the air guiding member 401. By providing the light source 1 in the air guiding member 401, the light source 1 is as far away from the inner container 200 as possible, further reducing the temperature of the environment where the light source 1 is located, and avoiding the influence of high temperature on the normal work of the light source 1.

[0063] As shown in the figures, Figure 3 The end of the shielding member 3 away from the microwave cavity 301 extends into the air guiding member 401, and the lighting device 100 further comprises a sealing member 4 provided between the shielding member 3 and the air guiding member 401. The sealing member 4 can be sleeved on the outer periphery of the shielding member 3, and the outer surface of the sealing member 4 is in contact with the air guiding member 401 to prevent water vapor in the air guiding member 401 from leaking through the gap between the shielding member 3 and the air guiding member 401, thereby avoiding affecting the normal work of other elements in the cooking device. The sealing member 4 can be made of silicone rubber material, which is compressible and elastic to ensure the sealing effect of the sealing member 4 on the gap between the shielding member 3 and the air guiding member 401, and the silicone rubber material is resistant to high temperature, thereby prolonging the service life of the sealing member 4.

[0064] As shown in the figures, Figure 3As shown, the air guide 401 is provided with a position giving part 403 corresponding to the microwave inlet 303, and the cooking device further comprises a stirring device 500, the stirring device 500 comprising a driving member 501 and a stirring member 502 connected with each other, the driving member 501 being arranged in the position giving part 403, and the stirring member 502 extending into the microwave cavity 301 from the microwave inlet 303. The driving member 501 can drive the stirring member 502 to rotate in the microwave cavity 301, so as to scatter the microwaves entering the microwave cavity 301 through the microwave inlet 303, improve the uniformity of the microwaves in the microwave cavity 301, and thus improve the microwave cooking effect of the cooking device. Since the volume of the driving member 501 is usually large, arranging the driving member 501 in the position giving part 403 can utilize the original space of the air guide 401, and avoid increasing the overall volume of the cooking device. Specifically, the position giving part 403 corresponds to the microwave inlet 303, and the position giving part 403 can be provided as a through hole or a structure recessed upward from the air guide 401.

[0065] As shown in Figure 7 Since the temperature of the light guide column 2 is low, the water vapor in the air guide 401 is likely to form condensed water after contacting the surface of the light guide column 2, and the condensed water on the surface of the light guide column 2 may be blown out of the cooking device by the fan 402 when the fan 402 is working, affecting the user experience. Therefore, the light source 1 is located on the side of the position giving part 403 away from the fan 402. The position giving part 403 can block part of the air blown out by the fan 402, so that a low air speed area is formed on the side of the position giving part 403 away from the fan 402, and the light guide column 2 is arranged in the low air speed area, so that the amount of water vapor contacting the light guide column 2 is small, and the surface of the light guide column 2 is not easy to form condensed water. Even if condensed water is formed on the surface of the light guide column 2, since the air speed in the low air speed area is small, the air blown out by the fan 402 is not easy to blow the condensed water on the surface of the light guide column 2 out of the cooking device, so as to improve the user experience.

[0066] As shown in Figure 8 As shown in Figure 8The +XO+Y region is shown. Specifically, the other end of the microwave channel 304 can be connected with a magnetron, and the magnetron generates microwaves which are fed into the microwave cavity 301 through the microwave channel 304 and the microwave inlet 303. The microwaves in the microwave cavity 301 are stirred and scattered by the stirring device 500, and then the food materials in the inner container 200 are heated by microwaves through the light-transmitting piece 302. When the microwave device 300 is arranged at the top of the inner container 200, the plane rectangular coordinate system is parallel to the top surface of the inner container 200. When the lighting device 100 is arranged in the third quadrant of the plane rectangular coordinate system, the amount of microwave leakage from the light guide column 2 is the least, so that the microwaves in the microwave cavity 301 can be further ensured not to leak through the light guide column 2, and the size of the shielding piece 3 can be reduced, thereby reducing the overall volume of the lighting device 100.

[0067] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but it should be considered that any combination of the technical features is within the scope of the present disclosure, as long as the combination does not result in contradictions.

[0068] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A cooking apparatus, characterized by, The cooking device comprises: a liner (200); a microwave device (300) arranged outside the liner (200), the microwave device (300) comprising a microwave cavity (301), and a light-transmitting piece (302) arranged on a side wall of the microwave cavity (301) facing the liner (200); and an illuminating device comprising: a light source (1) arranged outside the liner (200) and the microwave cavity (301); a light guide column (2) connected to the light source (1) at one end and arranged to extend into the microwave cavity (301) to transmit light emitted by the light source (1) into the liner (200) through the light guide column (2) and the light-transmitting piece (302); and a shielding piece (3) arranged to cover an outer periphery of a portion of the light guide column (2) outside the microwave cavity (301) at one end. The light guide column (2) comprises a cylindrical segment (21) arranged outside the microwave cavity (301), and the shielding piece (3) comprises a cylindrical portion (31) arranged to cover an outer periphery of the cylindrical segment (21). The inner diameter φ1 and the length H1 of the cylindrical portion (31) satisfy: H1 = 0.16φ1 2 -0.13φ1+2.2; The cylindrical portion (31) comprises a cylindrical segment (311) and a necked segment (312) connected to each other along a length direction of the cylindrical portion (31), and an inner diameter of the necked segment (312) is smaller than an inner diameter of the cylindrical segment (311). The microwave cavity (301) is provided with a microwave inlet (303), and a distance L between a center of the microwave inlet (303) and an axis of the shielding piece (3) satisfies L≥1 / 4λ, where λ is a wavelength of microwaves.

2. The cooking apparatus according to claim 1, characterized in that, The illuminating device further comprises a light guide ring (5) arranged in the microwave cavity (301), the light guide ring (5) comprises a light emitting surface (51) arranged to abut against the light-transmitting piece (302), and a light guide groove (52) is arranged on a side of the light guide ring (5) opposite to the light emitting surface (51), and the light guide column (2) is arranged to extend into the light guide groove (52) at one end.

3. The cooking apparatus according to claim 2, characterized in that, The light guide column (2) comprises a tapered segment (22) arranged to extend into the light guide groove (52), and a size of the tapered segment (22) gradually decreases from a groove opening of the light guide groove (52) to a groove bottom of the light guide groove (52).

4. The cooking apparatus according to claim 3, characterized in that, The tapered segment (22) is frustoconical or conical, and an angle α of a taper angle of the frustoconical or the conical satisfies 35°≤α≤50°.

5. The cooking apparatus according to claim 2, wherein The light guide ring (5) further comprises a reflecting surface (53), and the illuminating device further comprises a reflecting member (6) arranged to abut against the reflecting surface (53).

6. The cooking apparatus according to claim 1, wherein The cooking device further comprises an air guide device (400) arranged outside the liner (200), the air guide device (400) comprising an air guide piece (401) and a fan (402), and at least a portion of the fan (402) is arranged in the air guide piece (401). The light source (1) is arranged in the air guide piece (401), and one end of the light guide column (2) extends into the air guide piece (401) and is connected to the light source (1).

7. The cooking apparatus according to claim 6, characterized in that, The shielding member (3) extends into the air guide member (401) at one end away from the microwave cavity (301), and the lighting device further comprises a sealing member (4) arranged between the shielding member (3) and the air guide member (401).

8. The cooking apparatus according to claim 6, wherein The air guide member (401) is provided with a space-providing portion (403) corresponding to the microwave inlet (303), and the cooking device further comprises a stirring device (500), wherein the stirring device (500) comprises a driving member (501) and a stirring member (502) connected to each other, the driving member (501) is arranged in the space-providing portion (403), and the stirring member (502) extends into the microwave cavity (301) from the microwave inlet (303). The light source (1) is located on one side of the space-providing portion (403) away from the fan (402).

9. The cooking apparatus according to claim 6, wherein The microwave device (300) is further provided with a microwave channel (304) in communication with the microwave inlet (303), and the microwave transmission direction in the microwave channel (304) is the Y-axis with the center of the microwave inlet (303) as the origin, a plane rectangular coordinate system is established on the top surface of the inner container (200), and the lighting device is located in the first quadrant of the plane rectangular coordinate system.

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