Intelligent cooker

Abstract

The intelligent cooker comprises a wok and a wok cover capable of being buckled on a wok opening of the wok, a microwave generator capable of feeding microwave energy into the wok is arranged on the wok cover, and the intelligent cooker further comprises a light source and an optical system. Infrared light emitted by the light source forms parallel light beams after passing through the optical system, and the parallel light beams are emitted into the wok from the upper part of a wok opening of the wok; or infrared light emitted by the light source passes through the optical system and then is emitted into the wok from the upper portion of the wok opening of the wok in a convergence mode, the intelligent cooker can enable light energy generated by the light source to be emitted into the wok to the maximum extent, the light energy is directly transmitted to food materials in the wok in a radiation mode, and therefore the light energy can be directly emitted into the wok. The energy conversion efficiency is high, the heating mode is environment-friendly, meanwhile, the microwave generator capable of feeding microwave energy into the frying pan to heat food materials is arranged, and when the microwave generator and the light source heat the food materials at the same time, the heating efficiency can be greatly improved.

Description

Technical Field

[0001] The present invention relates to an intelligent cooking machine, and in particular to a method for heating food materials in the intelligent cooking machine. Background Art

[0002] Existing cooking machines usually use resistance wire heating or electromagnetic heating to heat the food, which mainly converts electrical energy into thermal energy or eddy current heat to heat the wok, and the wok then conducts the heat energy to the food in the wok. This type of heating method has the following disadvantages:

[0003] 1. The heat energy of the wok is transferred to the food by heating the wok, and the energy conversion efficiency of the whole process is low;

[0004] 2. Large thermal inertia;

[0005] 3. When electromagnetic heating is used, the device to achieve this heating method is complex, and electromagnetic radiation will be generated during the heating process, causing harm to people in the environment and causing interference to other electrical equipment or devices;

[0006] 4. When using resistance wire or electromagnetic heating, the temperature of the wok is relatively high (usually above 150 degrees), resulting in a large amount of oil smoke generated when the fluid substances added to the wok (such as liquid seasonings or oil, etc.) come into contact with the inner wall of the wok, causing pollution to the environment.

[0007] In recent years, microwaves have been used as an auxiliary heating method to heat food. However, the combination of microwave heating and the above heating methods has many inconveniences in structural coordination, resulting in low practicality. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide an intelligent cooking machine which can directly heat food and has high energy conversion efficiency.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0010] Provided is an intelligent cooking machine, comprising a wok and a pot cover that can be buckled on the wok mouth, wherein the pot cover is provided with a microwave generator that can feed microwave energy into the wok, and the intelligent cooking machine also comprises a light source and an optical system, wherein infrared light emitted by the light source forms a parallel light beam after passing through the optical system and is emitted into the wok from above the wok mouth; or, the infrared light emitted by the light source forms a parallel light beam after passing through the optical system and is emitted into the wok from above the wok mouth in a converging manner.

[0011] Preferably, the light source is composed of a plurality of point light sources capable of emitting a single-center light beam.

[0012] Preferably, the optical system includes a first lens arranged opposite to the point light sources and having the same number as the point light sources, the optical axis of the point light source is coaxial with the optical axis of the corresponding first lens, and the single-center light beam emitted by the point light source forms a parallel light beam after passing through the corresponding first lens.

[0013] Preferably, the first lens is made of a material with an infrared light transmittance higher than 80%, and the first lens is a plano-convex lens or a biconvex lens.

[0014] Preferably, all of the point light sources are arranged on the inner side of the pot cover and are located in the area around the feed port of the microwave generator, and a second lens is also provided between the pot mouth of the wok and the first lens to allow the parallel light beams to be injected into the wok in a converging manner.

[0015] Preferably, all of the point light sources and their corresponding first lenses are arranged on the inner side surface of a heat sink in the shape of an annular belt, and the heat sink is arranged above the mouth of the wok in a coaxial manner with the wok; the optical system also includes at least one reflector located in the enclosed area of ​​the heat sink and coaxially arranged with the heat sink, the space enclosed by the reflector is in the shape of a truncated cone, and a reflective film that can reflect infrared light is provided on the side of the reflector; the parallel light beams formed by the single-center light beams emitted by all the point light sources through the corresponding first lenses are all directed toward the central axis of the wok.

[0016] Preferably, all of the point light sources and their corresponding first lenses are distributed on the inner side surface of a heat sink in the shape of an annular belt and the inner side surface of the pot cover and are located in the area around the feed port of the microwave generator, and the heat sink is arranged above the pot mouth of the wok in a coaxial manner with the wok; the optical system also includes at least one reflector located in the enclosed area of ​​the heat sink and coaxially arranged with the heat sink, the space enclosed by the reflector is in the shape of a truncated cone, and a reflective film that can reflect infrared light is provided on the side of the reflector; the parallel light beams formed by the single-center light beams emitted by all the point light sources through the corresponding first lenses are all directed toward the central axis of the wok.

[0017] Preferably, the parallel light beam is reflected by the reflector and then incident into the wok in a manner perpendicular to the plane where the wok mouth is located; or the parallel light beam is reflected by the reflector and then incident into the wok in a direction toward the central axis of the wok; or the parallel light beam is reflected by the reflector and then incident into the wok in a direction away from the axis of the wok.

[0018] Preferably, the light source, the first lens and the heat sink are divided into a plurality of standard modules that can be quickly positioned and disassembled, each of the standard modules comprising a set number of the point light sources, a corresponding first lens and a heat sink substrate for mounting the point light sources, and the heat sink substrate is a basic unit corresponding to dividing the heat sink into several parts.

[0019] Preferably, a fork for stirring the food is installed at the bottom of the wok, and the fork can rotate relative to the wok around the central axis of the wok.

[0020] The present invention uses infrared light to directly heat the food in the wok. The light source is injected into the wok in a specific form (such as parallel light beams or convergent light) through an optical system and then acts on the food in the wok, so that the light energy generated by the light source can be injected into the wok to the maximum extent. The light energy is directly transferred to the food in the wok by radiation, and the energy conversion efficiency is high and the heating method is environmentally friendly. At the same time, a microwave generator is also provided to heat the food by feeding microwave energy into the wok, thereby effectively improving the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The light path diagram of the microwave generator and light source of the intelligent cooking machine of the present invention when the microwave generator and light source are installed in a top light source structure Figure 1 .

[0022] Figure 2 The light path diagram of the microwave generator and light source of the intelligent cooking machine of the present invention when the microwave generator and light source are installed in a top light source structure Figure 2 .

[0023] Figure 3 The diagram is a light path diagram of a light beam entering a wok in a manner perpendicular to the plane where the wok mouth is located when the microwave generator and the light source of the intelligent cooking machine of the present invention are installed in a side light source structure.

[0024] Figure 4 It is a schematic diagram of the light path of the light beam entering the wok in a manner of facing the central axis of the wok when the microwave generator and the light source of the intelligent cooking machine of the present invention are installed in a side light source structure.

[0025] Figure 5 The diagram is a light path diagram of a light beam entering a wok in a manner away from the central axis of the wok when the microwave generator and the light source of the intelligent cooking machine of the present invention are installed in a side light source structure.

[0026] Figure 6 The diagram is a light path diagram of the microwave generator and light source of the intelligent cooking machine of the present invention when a top light source and a side light source are installed in combination.

[0027] In the figure, there are a frying pan 10, a fork 11, a pot cover 20, a recess 21, a heat sink 3, a heat sink 4, an infrared LED lamp bead 5, a first lens 6, a second lens 7, a reflector 8, and an exhaust pipe 9. A microwave generator 100; a waveguide 110; and a waveguide cover 120. DETAILED DESCRIPTION

[0028] The main improvement of the intelligent cooking machine of the present invention is that two methods of heating the ingredients in the frying pan 10 are provided, namely infrared light heating and microwave heating. The two heating methods can be used in combination or separately.

[0029] The microwave heating refers to feeding the microwave energy generated by the microwave generator 100 into the wok 10 to heat the food; the infrared light heating refers to setting a light source and an optical system in the cooking cavity of the cooking machine, and heating the food by emitting infrared light generated by the light source into the wok 10.

[0030] The following introduces the two heating methods of infrared light and microwave respectively.

[0031] 1. Infrared light heating

[0032] 1. Light source

[0033] The light source is composed of a plurality of point light sources.

[0034] The feature of the present invention is that the single-center light beam (also called concentric light beam) emitted by the point light source is emitted into the wok 10 from above the pot mouth of the wok 10 in the form of a parallel light beam or a convergent light beam after passing through the optical system, or, multiple single-center light beams with similar light points emitted by the point light source are emitted into the wok 10 from above the pot mouth of the wok 10 in the form of a nearly parallel light beam or a convergent astigmatic light beam through the optical system, so that the single-center light beam emitted by the point light source is guided to the wok 10 with as few reflections and refractions as possible, thereby reducing the light energy loss caused by multiple reflections or refractions of the single-center light beam.

[0035] Compared with the prior art method of heating food with light energy, the advantages of the present invention are: the light energy generated by the light source can be maximized to be injected into the wok 10, and the light energy is directly transferred to the food in the wok 10 by radiation, with high energy conversion efficiency and environmentally friendly heating method.

[0036] The light source is preferably a light source that mainly emits infrared light, such as an infrared LED light source, an infrared small bulb, etc. The infrared light emitted by the light source is preferably near infrared and mid-infrared.

[0037] The point light source is preferably an infrared LED lamp bead 5, and the power of the infrared LED lamp bead 5 is preferably the largest infrared radiation power available on the market. Currently, the 3W infrared LED lamp bead 5 available on the market is preferred, with a size of 1.5mm in length and 1.5mm in width. A point-type thermal light source with a small volume and a large output power of infrared light components can also be selected as the point light source, such as a miniature incandescent lamp.

[0038] The following three light source settings are preferred:

[0039] 1) Top light source

[0040] The top light source means that a plurality of the infrared LED lamp beads 5 are evenly mounted on a circular heat dissipation plate 4, and the infrared LED lamp beads 5 are electrically connected in a conventional manner.

[0041] like Figure 1 and Figure 2 As shown, the heat sink 4 is fixedly connected to the inner side of a pot cover 20 which can be buckled on the pot mouth of the wok 10, so that when the pot cover 20 is closed on the pot mouth, all the infrared LED lamp beads 5 are facing the pot mouth of the wok 10 and the heat sink 4 is coaxially arranged with the wok 10.

[0042] The advantages of this structure are: the single-center light beam generated by the infrared LED lamp bead 5 can be directly injected into the frying pan 10 after passing through the optical system, the structure is simple, and the light loss is low.

[0043] 2) Side light source

[0044] The side light source means that a plurality of infrared LED lamp beads 5 are arranged on the inner side surface of a heat sink 3 in the shape of an annular belt, and the heat sink 3 is arranged above the mouth of the wok 10 in a coaxial manner with the wok 10 and the bottom surface of the heat sink 3 is higher than the mouth of the wok, and the light-emitting surfaces of all the infrared LED lamp beads 5 are facing the central axis of the wok 10.

[0045] like Figure 3 As shown, preferably, the heat sink 3 is installed on the pot cover 20 , specifically: a cylindrical recess 21 is recessed upwardly in the middle of the pot cover 20 , and the side of the recess 21 constitutes the heat sink 3 .

[0046] Furthermore, in order to prevent the water vapor or smoke in the wok 10 from affecting the service life of the infrared LED lamp bead 5 during the cooking process, a thin layer of transparent plane baffle (not shown in the figure) is covered at the open part of the recess 21. The transparent plane baffle is preferably made of glass with uniform light-transmitting properties. Since the transparent plane baffle is set as a thin layer, when the single-core light beam emitted by the infrared LED lamp bead 5 is projected onto the transparent plane baffle in the form of a parallel light beam after passing through the optical system, its incident angle is zero; or, when the single-core light beam emitted by the infrared LED lamp bead 5 is projected onto the transparent plane baffle in the form of an approximately parallel light beam after passing through the optical system, the refraction generated can be ignored because the incident angle is very small.

[0047] The width of the annular edge of the pot cover 20 located on the outer periphery of the recess 21 is only enough to be installed on the pot mouth of the wok 10 to achieve a sealing structure in which the pot cover 20 and the wok 10 are sealed together, so that the circumferential area of ​​the heat sink 3 is maximized to install more infrared LED lamp beads 5.

[0048] Take the wok 10 with a pot mouth diameter of 264 mm as an example:

[0049] Calculation shows that the circumference of the wok 10 is 829 mm. Assuming that the total width occupied by a single infrared LED lamp bead 5 is 5 mm (the width includes the width of the infrared LED lamp bead 5 itself and the reserved peripheral gap), 166 infrared LED lamp beads 5 can be arranged on a light strip arranged around the outer wall of the wok 10. If the selected infrared LED lamp bead 5 is 3W, the total output power of a light strip is 498W. If 10 light strips are arranged, the power can reach 4980W, which is enough to meet the heating needs of food. The height occupied by the 10 light strips installed on the heat sink 3 is about 5 cm (a light strip occupies 5 mm in height).

[0050] Compared with the structure of the top light source, this structure can set the infrared LED lamp beads 5 in a larger area, that is, it can achieve a higher power light energy output. When the radius size of the wok 10 is determined, this structure can effectively increase the infrared light energy injected into the wok 10.

[0051] 3) Combination structure of top light source and side light source

[0052] like Figure 6 As shown, the light sources of the above two structures are arranged at the same time, that is, infrared LED lamp beads 5 are evenly distributed on the heat dissipation disc 4 and the heat dissipation plate 3. This arrangement can effectively expand the illumination range and enhance the light energy intensity to meet the high energy requirements required for high-temperature stir-frying.

[0053] This structure can use the top light source as a backup light source and turn it on at a specific time to meet cooking needs.

[0054] In addition, since the present invention directly radiates light energy onto the food, the wok 10 used can be a cold wok (the "cold wok" means that the heat energy obtained by the processed food is not conducted from the wall of the wok 10, that is, the wok 10 is not required to have a high temperature when cooking the food).

[0055] The wok 10 is preferably made of a material with low thermal conductivity, such as ceramic or glass, which has a lower thermal conductivity than metal, to minimize heat loss (loss: for example, the food heated by light energy conducts heat energy to the wok 10 and then dissipates it into the environment).

[0056] The shape of the wok 10 may be cylindrical; or the upper part may be cylindrical, the lower part may be arc-shaped, and the bottom surface may be flat. The specific shape of the wok 10 may be selected according to the form of light entering the wok 10 .

[0057] The diameter of the pot mouth of the wok 10 is preferably larger than the diameter of the pot bottom, so as to facilitate the installation of more light sources and provide more energy for the food.

[0058] like Figures 1 to 6As shown, since the light energy radiated onto the food is relatively concentrated, in order to make the light energy incident into the wok 10 evenly received by all the food, a fork 11 for stirring the food is provided at the bottom of the wok 10, and the fork 11 rotates relative to the wok 10 around the central axis of the wok 10 (the rotation speed of the fork 11 is proportional to the light energy density incident into the upper surface of the food), and the fork 11 can repeatedly stir the food from the bottom of the wok 10 upward so that the food in the wok 10 can receive the light energy more evenly, further ensuring the uniformity of the doneness of the cooked dishes.

[0059] 2. Optical system

[0060] The function of the optical system is to allow the single-center light beam emitted by the top light source and / or the side light source to be injected into the wok 10 in a corresponding specific form (parallel light beam, convergent light beam, approximately parallel light beam or convergent astigmatic light beam).

[0061] like Figures 1 to 6 As shown, the optical system includes a first lens 6 .

[0062] The number of the first lenses 6 is the same as the number of infrared LED lamp beads. They are arranged in a one-to-one correspondence with the infrared LED lamp beads and installed directly opposite the corresponding infrared LED lamp beads 5. The optical axis of the first lens 6 is coaxial with the optical axis of the infrared LED lamp bead 5.

[0063] The infrared LED lamp bead 5 is set at a position corresponding to when the intersection of the reverse extension line of the maximum emission angle of the infrared LED lamp bead 5 coincides with the object focus of the first lens 6. In this way, the single-center light beam emitted by the infrared LED lamp bead 5 can form a parallel light beam after passing through the first lens 6.

[0064] The first lens 6 can be a plano-convex lens or a biconvex lens, preferably a plano-convex lens, and is made of a material with an infrared light transmittance higher than 80%, such as organic glass, PC or silicone. The first lens 6 of the present invention is preferably made of organic glass.

[0065] Furthermore, to facilitate maintenance and replacement of the light source, all infrared LED lamp beads 5, the first lens 6 and the heat sink (the heat sink is a heat sink 3 or a heat sink 4) are divided into a plurality of standard modules that can be quickly positioned and disassembled (rapid positioning and disassembly means that the standard module is accurately installed in the set position through a quick disassembly structure to meet the consistency of the optical path design of the optical system).

[0066] Each of the standard modules is composed of a heat dissipation substrate including a set number of infrared LED lamp beads 5, a point light source and a corresponding first lens 6. The heat dissipation substrate is a basic unit corresponding to dividing the heat dissipation plate 3 or the heat dissipation disk 4 into several parts. All the first lenses 6 on each standard module can be made into an integrated structure.

[0067] When a certain lamp bead fails, it is only necessary to replace and repair the standard module where the problematic infrared LED lamp bead 5 is located, without replacing the entire light source, thereby effectively reducing maintenance costs.

[0068] For different light source settings, the corresponding optical systems are also different. The specific structures are as follows:

[0069] 1) Set only top light source

[0070] like Figure 1 As shown, when the pot cover 20 is closed on the pot mouth, the single-center light beams emitted by all the infrared LED lamp beads 5 form parallel light beams after passing through the first lens 6 and then vertically shoot into the wok 10 from the pot mouth and are evenly distributed in the wok 10, which is more conducive to uniform heating of the food.

[0071] like Figure 2 As shown, when it is necessary to inject the parallel light beam into the wok 10 in a converging form, the optical system further includes a second lens 7.

[0072] The second lens 7 is arranged between the pot mouth and the first lens 6 , the second lens 7 is coaxially arranged with the heat dissipation plate 4 , and the diameter of the second lens 7 is equal to or slightly larger than the diameter of the heat dissipation plate 4 .

[0073] For different woks 10 , the curvature radius of the second lens 7 can be adjusted according to the depth thereof to allow the parallel light beam emitted through the first lens 6 to be emitted into a set area in the wok 10 in a converging manner at different angles, preferably converging at the bottom of the wok 10 .

[0074] 2) Set only side light source

[0075] The optical system further comprises at least one mirror 8 .

[0076] like Figures 3 to 5 As shown, the shape of the space enclosed by the reflector 8 is preferably a truncated cone, which (after installation, the diameters of the two bottom surfaces of the truncated cone are larger at the top and smaller at the bottom) is fixedly connected to the area enclosed by the heat sink 3, and the reflector 8 is coaxially arranged with the heat sink 3.

[0077] A reflective film capable of reflecting infrared light is provided on the side surface of the truncated cone, and the reflective film is preferably a metal dielectric reflective film.

[0078] The single-center light beams emitted by all the infrared LED lamp beads 5 on the heat sink 3 and the parallel light beams coming out of the first lens 6 are basically directed to the central axis of the wok 10, and the optical axes of the infrared LED lamp beads 5, the optical axes of the corresponding first lenses 6 and the axis of the reflector 8 are as close to the same plane as possible, so as to ensure that the light reflected by the reflector 8 into the wok 10 remains as a parallel light beam.

[0079] On the basis of ensuring that the axis of the heat sink 3, the axis of the reflector 8 and the central axis of the wok 10 (when the pot cover 20 is closed on the pot mouth) are basically coaxial, the shape of the space enclosed by all the heat sink substrates is set to a hollow truncated cone, that is, the angle between the cut edge of the heat sink 3 in the vertical direction and its axis is adjusted, so that the single-center light beams emitted by all the infrared LED lamp beads 5 on the heat sink 3 can be formed into parallel light beams by the first lens 6 and irradiated on the reflector 8 at a set incident angle, and then all the parallel light beams are reflected by the reflector 8 to a set area in the wok 10.

[0080] Similarly, the annular edge of the heat sink 3 can also be set to a vertical state (that is, the annular edge is parallel to its axis), and then by adjusting the angle between the generatrix of the reflector 8 and its axis, the parallel light beam formed by the first lens 6 can be reflected by the reflector 8 and irradiated into a set area in the wok 10.

[0081] In this structure, the parallel light beam can be reflected by the reflector 8 and then projected into the wok 10 (at this time, the pot cover 20 is closed on the pot mouth) in three ways:

[0082] The first type: the parallel light beam is injected into the wok 10 in a manner perpendicular to the plane of the wok mouth.

[0083] The second type: the parallel light beam is incident into the wok 10 in a direction toward the central axis of the wok 10 .

[0084] The third type: the parallel light beam is incident into the wok 10 in a direction away from the central axis of the wok 10 .

[0085] The following is an example to illustrate:

[0086] Assume that the shape of the wok 10 is that the upper part is cylindrical, the lower part is arc-shaped, and the bottom surface is flat; the diameter of the wok 10 is 268 mm, the height of the wok 10 is 240 mm (the height of the cylindrical part is 116 mm, the height of the arc part is 124 mm), and the diameter of the bottom plane of the wok 10 is 103 mm;

[0087] The vertical cut edge of the heat sink 3 is parallel to the central axis, and the diameter of the heat sink 3 is approximately the diameter of the wok 10. When the pot cover 20 is closed on the wok 10, the bottom of the heat sink 3 is in contact with the top edge of the wok 10, and the height of the heat sink 3 is 50 mm (the height of the irradiation area of ​​the parallel light beam formed by a row of 10 infrared LED lamp beads 5 through the first lens 6 is 50 mm, that is, the top edge of the heat sink 3 and the top edge of the parallel light beam coming out from the highest point of the first lens 6 are in the same horizontal plane, and the bottom edge of the heat sink 3 and the bottom edge of the parallel light beam coming out from the lowest point of the first lens 6 are in the same horizontal plane)

[0088] The vertical height of the reflector 8 is the same as the vertical height corresponding to when the parallel light beam irradiates the side of the reflector 8 .

[0089] Under the above conditions:

[0090] a. When the angle between the generatrix of the reflector 8 and its axis is 45 degrees, the parallel light beam formed by the unidirectional light beam through the first lens 6 is incident into the wok 10 in a manner perpendicular to the plane of the wok mouth 10 (i.e., the parallel light beam is parallel to the central axis of the wok 10) after passing through the reflector 8.

[0091] The projection of the irradiation area of ​​the parallel light beam in the wok 10 on the horizontal plane is an annular light band, the ring width of the light band is the difference between the upper bottom surface and the lower bottom surface of the reflector 8, and the difference is equal to the vertical height (i.e. 50 mm) of the irradiation area of ​​the parallel light beam formed by the first lens 6. The radius of the lower bottom surface of the reflector 8 can be adjusted to adjust the inner radius of the light band and thereby adjust the position of the light band in the wok 10.

[0092] For example, when the radius of the lower bottom surface of the reflector 8 is 0 mm, the reflector 8 is conical, and the shape of the light band is a circle (the radius of the circle is 50 mm) that spreads outward from the central axis of the wok 10, and the light band is directly opposite the bottom of the wok 10 (the radius of the bottom of the wok 10 is 51.5 mm); when the radius of the upper bottom surface of the reflector 8 gradually increases from 0 mm to 134 mm, the light band is annular, the inner circle radius also gradually increases, and the light band gradually moves away from the central axis of the wok 10.

[0093] b. When the angle between the generatrix of the reflector 8 and its axis is greater than 45 degrees, the parallel light beam formed by the unidirectional light beam through the first lens 6 is incident into the wok 10 in the direction of the central axis of the wok 10 after passing through the reflector 8.

[0094] like Figure 4 As shown, the included angle between the generatrix of the reflector 8 and the central axis of the frying pan 10 is set to 57.4 degrees, and the diameter of the upper bottom surface of the reflector 8 is the same as the diameter of the heat sink 3. At this time:

[0095] The single-center light beam emitted by the infrared LED lamp bead 5 at the highest point on the heat sink 3 is formed into a parallel light beam by the first lens 6 and then reflected by the reflector 8 to face the center position of the bottom of the wok 10; the single-center light beam emitted by the infrared LED lamp bead 5 at the lowest point on the heat sink 3 is formed into a parallel light beam by the first lens 6 and then reflected by the reflector 8 into the wok 10. The distance from the intersection of the parallel light beam and the vertical line passing through the center point of the bottom of the wok 10 on the central axis of the wok 10 to the center point of the wok 10 is 55 mm, which is greater than the radius of the bottom of the wok 10. Therefore, the parallel light beam generated by the infrared LED lamp bead 5 at the lowest point on the heat sink 3 is irradiated on the arc edge of the upper point of the bottom of the wok 10. At this time, the parallel light beam is radiated on the entire bottom of the wok 10 after entering the wok 10.

[0096] c. When the angle between the generatrix of the reflector 8 and its axis is less than 45 degrees, the parallel light beam formed by the unidirectional light beam through the first lens 6 is incident into the wok 10 in a direction away from the central axis of the wok 10 after passing through the reflector 8.

[0097] like Figure 5 As shown, the included angle between the generatrix of the reflector 8 and the central axis of the frying pan 10 is set to 32.9 degrees. At this time:

[0098] The parallel light beam formed by the infrared LED lamp bead 5 at the highest point on the heat sink 3 is reflected by the reflector 8 and irradiates the side wall of the wok 10 at a position 124 mm away from the bottom of the wok 10 (i.e., the intersection of the cylindrical side and the curved side of the wok 10), that is, the parallel light beam that can completely irradiate the wok 10 is located in an area above 124 mm away from the bottom of the wok 10.

[0099] For woks 10 of different shapes or sizes and different cooking methods, the irradiation position of the light beam in the wok 10 can be adjusted by adjusting the installation angle of the heat sink 3 and the angle or position of the reflector 8. For example, when the wok 10 is used for cooking with the mouth facing upward, the ingredients usually gather at the bottom of the wok 10, and it is necessary to concentrate the light at the bottom of the wok 10; when the wok 10 is tilted at a certain angle for cooking, the ingredients usually gather at the lower side wall, and it is necessary to concentrate the light on the side wall of the wok 10.

[0100] 3) Set up top light source and side light source

[0101] Preferably, the reflector 8 has a hollow channel penetrating the upper and lower bottom surfaces thereof, and the diameter of the hollow channel is equal to the diameter of the lower bottom surface of the reflector 8 .

[0102] like Figure 6 As shown, the infrared LED lamp beads 5 corresponding to the top light source are installed in the area where the bottom surface of the reflector 8 is vertically projected to the top of the pot cover 20; or installed in the top area of ​​the pot cover 20 between the outer periphery of the reflector 8 and the heat sink 3; when both areas exist, infrared LED lamp beads 5 can be installed in both areas.

[0103] An exhaust pipe 9 is also provided on the pot cover 20 , and an air inlet of the exhaust pipe 9 is communicated with the hollow channel or is arranged in the top area of ​​the pot cover 20 between the periphery of the reflector 8 and the heat dissipation plate 3 .

[0104] Furthermore, in order to improve the safety performance of the cooking machine and facilitate understanding of the working condition of the light source, at least one visible light warning light is provided in each standard module. When the standard module is powered on and working normally, the visible light warning light is on, which can remind the user that infrared light has been emitted to avoid burns; when the visible light warning light is not on after power is turned on, it means that the standard module has a fault and needs to be inspected and repaired.

[0105] 3. The infrared light heating method of the present invention has the following advantages:

[0106] 1) The frying pan 10 has a wide range of materials that can be selected, which makes up for the defect that only iron pots can be used in the electromagnetic heating method, and the application range is expanded;

[0107] 2) There is no high-frequency electromagnetic wave radiation. An ordinary induction cooker is equivalent to the radiation of 15 mobile phones, while the light wave oven has far infrared radiation, which has health care and heating. 87% of the infrared waves are concentrated in 15μm~8μm, the infrared radiation conversion rate is more than 70%, and the infrared energy is 765.9W / m 2 Long-term use can play a health care and therapeutic role, especially it can effectively activate tissue cells, promote blood circulation, accelerate metabolism, enhance immunity, and has the effects of deodorization, dehumidification, antibacterial, anti-fatigue, anti-aging, and health care.

[0108] 3) The thermal inertia of light energy is small, which effectively reduces energy loss.

[0109] 4) The food tastes good, the heat energy is strong and even, ensuring the food is colorful, fragrant and tasty.

[0110] 5) It can cook quickly, and the heat source is concentrated, which saves energy and electricity.

[0111] 6) No open flame, no carbon monoxide produced.

[0112] 2. Microwave Heating

[0113] The advantage of microwave heating is that it can evenly heat the inside and outside of the cooked food, greatly shorten the cooking time, and make the cooked dishes fragrant on the outside and tender on the inside. The present invention preferably uses microwaves as an auxiliary heat source in combination with the above-mentioned infrared light, which can greatly improve cooking efficiency.

[0114] like Figures 1 to 6 As shown, the component for realizing microwave heating is at least one group of microwave generators 100. The microwave energy emitted by the microwave generator 100 is fed into the wok 10 through at least one waveguide 110. The waveguide 110 is installed on the pot cover 20. The material of the pot cover 20 is microwave isolation material, and the waveguide 110 and the heat sink 4, heat sink 3, reflector 8 or exhaust pipe 9 installed on the inner side of the pot cover 20 do not interfere with each other.

[0115] A waveguide cover 120 is also provided at the feed inlet of the waveguide 110 to prevent water vapor, smoke, etc. from entering the waveguide 110 and then contaminating the microwave generator 100 during cooking. The waveguide cover 120 can be made of microwave-transmissive material and is food-grade material.

[0116] When the pot cover 20 is sealed on the pot mouth of the wok 10, the feeding port of the waveguide 110 faces the pot mouth, and the microwave generator 100 can feed microwaves into the food in the wok 10; when the wok 10 leaves the pot cover 20 for other cooking actions (such as the feeding device of the cooking machine puts food into the wok 10 or the wok 10 takes out the food), the main control circuit controls the microwave generator 100 to stop working to avoid microwave leakage.

[0117] Furthermore, in order to prevent microwaves from leaking outward from between the pot cover 20 and the pot mouth, the pot cover 20 is provided with the sealing structure. During the cooking process of the frying pan 10, the pot cover 20 is always sealed on the pot mouth of the frying pan 10 through the sealing structure. The sealing structure is preferably the following:

[0118] 1) The sealing structure is a metal mesh, which is annular in structure and has a "V"-shaped cross-section formed by two sides connected. The metal mesh is fixed to the pot cover 20 with its "V"-shaped opening facing the central axis of the pot cover 20. When the pot cover 20 is closed on the wok 10, one side of the metal mesh is pressed against the pot mouth of the wok 10 and can produce elastic deformation under the pressure of the wok 10 to fit tightly on the pot mouth of the wok 10 (the mesh aperture of the metal mesh meets the requirement of preventing microwave leakage).

[0119] 2) The sealing structure is a sealing ring with a coating that reflects microwaves.

[0120] When the pot cover 20 is closed on the pot opening of the frying pan 10, the sealing ring is elastically pressed against the pot opening.

[0121] 3) The sealing structure is a mesh grid arranged in the sealing ring, and the mesh grid is made of metal.

[0122] An isolation structure is provided in the exhaust pipe 9 to prevent microwaves from leaking outward along the wind direction. The isolation structure is a metal grid (the aperture of the mesh holes of the metal grid meets the requirement of preventing microwave leakage).

[0123] Furthermore, a microwave leakage detection device is provided near the pot cover 20 and at any position in the exhaust pipe 9 behind the isolation structure, and the microwave leakage detection device is electrically connected to the microwave radiation alarm device of the control circuit.

Claims

1. An intelligent cooking machine, comprising a frying pan and a pot cover that can be buckled on the mouth of the frying pan, characterized in that: A microwave generator capable of feeding microwave energy into the wok is arranged on the pot cover. The intelligent cooking machine also comprises a light source and an optical system. The infrared light emitted by the light source forms a parallel light beam after passing through the optical system and is emitted into the wok from above the wok mouth; or the infrared light emitted by the light source forms a parallel light beam after passing through the optical system and is emitted into the wok from above the wok mouth in a converging manner.

2. The intelligent cooking machine according to claim 1, characterized in that: The light source is composed of a plurality of point light sources capable of emitting a single-center light beam.

3. The intelligent cooking machine according to claim 2, characterized in that: The optical system includes a first lens arranged opposite to the point light sources and having the same number as the point light sources. The optical axis of the point light source is coaxial with the optical axis of the corresponding first lens. The single-center light beam emitted by the point light source forms a parallel light beam after passing through the corresponding first lens.

4. The intelligent cooking machine according to claim 3, characterized in that: The first lens is made of a material with an infrared light transmittance higher than 80%, and the first lens is a plano-convex lens or a biconvex lens.

5. The intelligent cooking machine according to claim 4, characterized in that: All the point light sources are arranged on the inner side of the pot cover and are located in the area around the feeding port of the microwave generator. A second lens is also arranged between the pot mouth of the wok and the first lens, which can make the parallel light beams enter the wok in a converging manner.

6. The intelligent cooking machine according to claim 4, characterized in that: All of the point light sources and their corresponding first lenses are arranged on the inner side of a heat sink in the shape of an annular belt, and the heat sink is arranged above the mouth of the wok in a coaxial manner with the wok; the optical system also includes at least one reflector located in the enclosed area of ​​the heat sink and coaxially arranged with the heat sink, the space enclosed by the reflector is in the shape of a truncated cone, and a reflective film that can reflect infrared light is provided on the side of the reflector; the parallel light beams formed by the single-center light beams emitted by all the point light sources through the corresponding first lenses are all directed toward the central axis of the wok.

7. The intelligent cooking machine according to claim 4, characterized in that: All of the point light sources and their corresponding first lenses are distributed on the inner side surface of a ring-shaped heat sink and the inner side surface of the pot cover and are located in the area around the feed port of the microwave generator. The heat sink is arranged above the pot mouth of the wok in a coaxial manner with the wok. The optical system also includes at least one reflector located in the enclosed area of ​​the heat sink and coaxially arranged with the heat sink. The space enclosed by the reflector is in the shape of a truncated cone, and a reflective film that can reflect infrared light is provided on the side of the reflector. The parallel light beams formed by the single-center light beams emitted by all the point light sources through the corresponding first lenses are all directed toward the central axis of the wok.

8. The intelligent cooking machine according to claim 6 or 7, characterized in that: After being reflected by the reflector, the parallel light beam is incident into the wok in a manner perpendicular to the plane where the wok mouth is located; or after being reflected by the reflector, the parallel light beam is incident into the wok in a direction toward the central axis of the wok; or after being reflected by the reflector, the parallel light beam is incident into the wok in a direction away from the axis of the wok.

9. The intelligent cooking machine according to claim 8, characterized in that: The light source, the first lens and the heat sink are divided into a plurality of standard modules that can be quickly positioned and disassembled. Each of the standard modules comprises a set number of the point light sources, a corresponding first lens and a heat sink substrate for mounting the point light sources. The heat sink substrate is a basic unit corresponding to dividing the heat sink into several parts.

10. The intelligent cooking machine according to claim 5 or 9, characterized in that: A fork for stirring the food is installed at the bottom of the wok, and the fork can rotate relative to the wok around the central axis of the wok.

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