Microwave rice cooker

Abstract

The utility model relates to the technical field of household appliances, and provides a microwave rice cooker which comprises a cover body, a cooker body, a non-contact temperature measuring sensor and a microwave generating device. The cooker body is suitable for being enclosed with the cover body to form a cooking cavity; the non-contact temperature measuring sensor is arranged on the cover body and is suitable for forming a detection view field towards the cooking cavity, and the microwave generating device is used for sending microwaves into the cooking cavity. By arranging the non-contact temperature measuring sensor, the temperature is measured under the condition that food is not contacted, and damage or pollution to the food is avoided; compared with a contact type temperature measuring sensor, the response speed is high, and food is effectively prevented from being excessively heated; and the through hole is only formed in the microwave rice cooker corresponding to the detection view field of the non-contact temperature measurement sensor, so that the microwave shielding effect in the microwave rice cooker is effectively ensured, the cooking efficiency of the microwave rice cooker is improved, and the use safety of a user is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a microwave rice cooker. Background Art

[0002] In the related art, rice cookers usually adopt electric heating. By energizing the heating component to generate heat, the heating component heats the food in the cooking cavity. However, the heating component has the problem of high energy consumption. For this reason, microwave rice cookers are also proposed in the related art. The food in the cooking cavity is heated by microwaves. However, the contact temperature detection sensor in the cooking cavity has the problem of slow detection speed and low efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides a microwave rice cooker that detects the temperature of food by providing a non-contact temperature sensor, thereby effectively ensuring the timeliness of food temperature detection and preventing microwave leakage from the microwave rice cooker.

[0004] The microwave rice cooker according to the embodiment of the utility model comprises:

[0005] Cover body;

[0006] The pot body is adapted to be enclosed with the cover body to form a cooking cavity;

[0007] A non-contact temperature sensor is provided on the cover and is suitable for forming a detection field of view in the direction of the cooking chamber.

[0008] A microwave generating device is used to send microwaves into the cooking cavity.

[0009] According to the microwave rice cooker of the embodiment of the present invention, a non-contact temperature measurement sensor is provided to measure the temperature without contacting the food, thereby avoiding damage or contamination to the food; compared with the contact temperature measurement sensor, the response speed is fast, effectively preventing overheating of the food; and only a through hole corresponding to the detection field of view of the non-contact temperature measurement sensor is provided in the microwave rice cooker, thereby effectively ensuring the microwave shielding effect in the microwave rice cooker, improving the cooking efficiency of the microwave rice cooker, and ensuring user safety.

[0010] According to an embodiment of the present invention, the cover body covers the top of the pot body, and / or the cover body is provided with a steam valve, and the steam valve is suitable for discharging steam in the cooking chamber.

[0011] According to one embodiment of the present invention, the microwave rice cooker also includes an optical lens, which is sealed with the cover and located between the cooking cavity and the non-contact temperature sensor. The optical lens is suitable for the detection field to pass through and isolates the cooking cavity from the non-contact temperature sensor.

[0012] According to one embodiment of the present invention, the cover body includes a movable cover plate and an upper cover assembly, and the movable cover plate and the pot body are combined to form the cooking chamber; the movable cover plate is detachably arranged on the upper cover assembly, and the optical lens is arranged on the movable cover plate.

[0013] According to one embodiment of the present invention, the cover body includes a movable cover plate and a shielding cover plate, the pot body includes an inner pot and a shielding cover, the shielding cover and the shielding cover plate enclose a shielding cavity, the inner pot and the movable cover plate enclose a cooking cavity, and the inner pot and the movable cover plate are located in the shielding cavity;

[0014] The optical lens is arranged on the shielding cover.

[0015] According to an embodiment of the present invention, the shielding cover is recessed toward the non-contact temperature measurement sensor to form a mounting position, and the optical lens is fixed at the mounting position.

[0016] According to an embodiment of the present invention, along the extension direction of the detection field of view, the minimum distance between the optical lens and the inner wall of the cooking chamber is less than or equal to 10 mm.

[0017] According to one embodiment of the present invention, the cover body includes a movable cover plate, a shielding cover plate, and a plastic inner cover; the pot body includes an inner pot and a shielding cover; the shielding cover and the shielding cover plate enclose a shielding cavity; the inner pot and the movable cover plate enclose a cooking cavity; the inner pot and the movable cover plate are located in the shielding cavity;

[0018] The plastic inner cover is located on a side of the shielding cover plate away from the movable cover plate, and the optical lens is arranged on at least one of the plastic inner cover, the shielding cover plate or the movable cover plate.

[0019] According to one embodiment of the present invention, a clearance hole is provided on the cover at a position corresponding to the non-contact temperature measurement sensor, a sealing component is provided at the clearance hole, a channel is provided in the sealing component, and the optical lens is sealed and connected to the channel.

[0020] According to an embodiment of the present invention, when the cover body is provided with a movable cover plate, the relief hole comprises a second through hole provided on the movable cover plate, and the sealing component is provided at the second through hole.

[0021] According to one embodiment of the present invention, when the cover body includes a plastic inner cover and a shielding cover plate, the clearance hole includes a first through hole arranged in the shielding cover plate, and a third through hole arranged in the plastic inner cover, and the sealing component is arranged at the third through hole, and the sealing component abuts and seals between the plastic inner cover and the shielding cover plate.

[0022] According to one embodiment of the present invention, when the cover body includes a movable cover plate, a shielding cover plate and a plastic inner cover, the clearance hole includes a second through hole provided on the movable cover plate, a first through hole provided on the shielding cover plate, and a third through hole provided on the plastic inner cover;

[0023] The first end of the sealing component seals against the movable cover plate, the second end of the sealing component seals against the plastic inner cover, and the sealing component is seal-engaged in the first through hole.

[0024] According to one embodiment of the present invention, the shielding cover is movable relative to the plastic inner cover along the extension direction of the detection field of view;

[0025] The sealing component includes a main body and two elastic parts. The two elastic parts are respectively located at two ends of the main body along the extension direction. The main body is embedded in the first through hole. The two elastic parts respectively abut the movable cover and the plastic inner cover.

[0026] According to an embodiment of the present invention, along the extending direction, the elastic portion includes at least one bending segment.

[0027] According to an embodiment of the present invention, the opening of the bent section faces the axial direction of the channel, and the sealing component is an integrally formed component.

[0028] According to one embodiment of the present invention, the wall thicknesses of the bending section on both sides of the inflection point are respectively the first wall thickness and the second wall thickness, and along the extension direction, the difference obtained by subtracting the sum of all the first wall thicknesses and the second wall thicknesses from the length of the elastic part is greater than or equal to 1 mm.

[0029] According to an embodiment of the present invention, at least one of the side wall of the sealing component and the inner wall of the first through hole is provided with a convex ring, and the other is provided with a ring groove that seals with the convex ring.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is one of the structural diagrams of the microwave rice cooker provided by the embodiment of the utility model.

[0033] Figure 2 It is a front view of a microwave rice cooker provided by an embodiment of the utility model.

[0034] Figure 3 yes Figure 2 One of the sectional views along section line AA.

[0035] Figure 4 yes Figure 3 Enlarged view of part E in the middle.

[0036] Figure 5 This is an exploded view of an optical lens installed on a shielding cover provided by an embodiment of the present utility model.

[0037] Figure 6 yes Figure 2 The second sectional view along section line AA.

[0038] Figure 7 yes Figure 6 Enlarged view of part B in the middle.

[0039] Figure 8 It is an exploded view of an optical lens mounted on a movable cover provided by an embodiment of the utility model.

[0040] Figure 9 yes Figure 2 The third sectional view along section line AA.

[0041] Figure 10 yes Figure 9 Enlarged view of part C in the middle.

[0042] Figure 11 This is an exploded view of an optical lens provided by an embodiment of the present utility model installed on a second sealing member.

[0043] Figure 12 This is a cross-sectional view of a microwave rice cooker provided by an embodiment of the present utility model;

[0044] Figure 13 It is a cross-sectional view of the cover of the microwave rice cooker provided by an embodiment of the utility model.

[0045] Figure 14 yes Figure 13 Enlarged view of part A in the middle.

[0046] Figure 15 This is an exploded view of the cover of the microwave rice cooker provided by an embodiment of the utility model.

[0047] Figure 16 The utility model is a structural diagram of the sealing component of the microwave rice cooker provided in an embodiment.

[0048] Reference numerals:

[0049] 10. Pot body; 11. Shielding cover; 12. Inner pot; 13. Shielding cavity; 14. Cooking cavity;

[0050] 20. Cover; 21. Shielding cover; 211. First through hole; 212. Raised ring; 22. Movable cover; 221. Second through hole; 23. Sealing component; 231. Channel; 232. Annular groove; 233. Main body; 234. Elastic portion; 2341. Bend section; 24. First sealing member; 241. First channel; 25. Second sealing member; 251. Second channel; 252. First annular groove; 26. Third sealing member; 261. Third channel; 262. Second annular groove; 27. Fourth sealing member; 271. Fourth channel;

[0051] 30. Non-contact temperature sensor; 31. Detection field of view;

[0052] 40. Plastic inner cover; 41. Third through hole;

[0053] 50. Optical lens; 60. Steam valve; 70. Upper cover assembly; 80. Clearance hole; 90. Microwave generating device. DETAILED DESCRIPTION

[0054] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0055] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0056] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0057] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0059] Combine Figures 1 to 4 As shown, the microwave rice cooker according to the embodiment of the present invention includes a cover body 20, a pot body 10, a non-contact temperature sensor 30 and a microwave generating device 90. The pot body 10 is suitable for being enclosed with the cover body 20 to form a cooking cavity 14; the non-contact temperature sensor 30 is arranged on the cover body 20, suitable for forming a detection field of view 31 in the direction of the cooking cavity 14, and the microwave generating device 90 is used to send microwaves into the cooking cavity 14.

[0060] In the microwave rice cooker of the present invention, the microwave generating device 90 transmits microwaves into the cooking chamber 14. The microwaves penetrate the food and interact with the water molecules therein, causing the water molecules to rotate rapidly under the influence of the electric field. This rapid molecular motion generates frictional heat, which converts microwave energy into heat. Since microwaves can penetrate the food and generate heat within it, the food can be evenly heated from the inside. Compared to traditional electric heating methods, this method is more efficient and heats the food better.

[0061] It should be noted that in the related art, microwave rice cookers typically use contact temperature sensors to detect food temperature. These sensors determine whether the water in the food is boiling by identifying the temperature of the water vapor generated during the heating process. However, when a microwave rice cooker is used to reheat food, the reheating temperature does not reach a sufficient level to generate sufficient water vapor. Consequently, contact temperature sensors cannot accurately detect the actual food temperature. Instead, they can estimate the food temperature based on the heating time and power. This indirect estimation is inaccurate for different types (with varying thermal conductivities) and sizes of food, leading to overheating or underheating, impacting the user experience. Furthermore, the complex cooking process in a rice cooker requires temperature-controlled heating, placing high demands on temperature accuracy and speed. Furthermore, microwave rice cookers utilize a unique heating method: microwaves generate heat by acting on water molecules, while heat is transferred from the cooker to the food. Consequently, the food temperature rises faster than the cooker itself, resulting in a slow response time for contact temperature sensors in this scenario.

[0062] According to the microwave rice cooker of the embodiment of the present invention, a non-contact temperature measurement sensor 30 is provided to measure the temperature without contacting the food, thereby avoiding damage or contamination to the food; compared with a contact temperature measurement sensor, the response speed is fast, effectively preventing overheating of the food; and only a through hole corresponding to the detection field of view 31 of the non-contact temperature measurement sensor 30 is provided in the microwave rice cooker, thereby effectively ensuring the microwave shielding effect in the microwave rice cooker, improving the cooking efficiency of the microwave rice cooker, and ensuring the safety of the user.

[0063] In this embodiment, the non-contact temperature measurement sensor 30 is a far-infrared temperature measurement sensor; of course, a radiation temperature measurement instrument, a laser temperature measurement instrument, etc. can also be used.

[0064] Combine Figures 1 to 4 As shown, in one embodiment, the cover 20 covers the top of the pot body 10, so that when the user places and takes food (such as rice), the food will not leak from the cooking cavity 14. In addition, the top setting is conducive to the user opening and closing the cooking cavity 14, thereby improving the user experience.

[0065] Combine Figure 3As shown, in one embodiment, the lid 20 is provided with a steam valve 60, which is suitable for discharging steam from the cooking chamber 14. When the microwave rice cooker is in use, the steam valve 60 is kept closed. After the food is cooked, the steam can be released to reduce the pressure in the microwave rice cooker, thereby achieving a degassing effect, balancing the pressure in the cooking chamber 14 with the outside air, and facilitating the opening of the microwave rice cooker.

[0066] According to one embodiment of the present invention, Figures 1 to 4 As shown, the microwave rice cooker also includes an optical lens 50, which is sealed with the cover 20 and is located between the cooking cavity 14 and the non-contact temperature sensor 30. It is suitable for detecting the passage of the field of view 31 and isolating the cooking cavity 14 from the non-contact temperature sensor 30.

[0067] According to the microwave rice cooker of the embodiment of the present invention, by providing the optical lens 50, the cooking chamber 14 is isolated from the non-contact temperature measurement sensor 30 while ensuring that the detection field of view 31 of the non-contact temperature measurement sensor 30 passes through, thereby preventing the steam generated during the food heating process (or the high-temperature air in the cooking chamber 14) from directly contacting the non-contact temperature measurement sensor 30, effectively extending the service life of the non-contact temperature measurement sensor 30, and thereby improving the service life of the microwave rice cooker.

[0068] In this embodiment, the optical lens 50 is a filter (silicon dioxide lens). The setting of the filter can effectively prevent non-infrared light from affecting the detection effect of the infrared temperature sensor; of course, different types of optical lenses 50 can be set based on different types of non-contact temperature sensors 30.

[0069] According to one embodiment of the present invention, Figure 1 and Figure 2 as well as Figures 6 to 8 As shown, the cover body 20 includes a movable cover plate 22 and an upper cover assembly 70 . The movable cover plate 22 and the pot body 10 enclose a cooking chamber 14 . The movable cover plate 22 is detachably disposed on the upper cover assembly 70 , and the optical lens 50 is disposed on the movable cover plate 22 .

[0070] In this embodiment, when the wall surface of the cooking chamber 14 is contaminated by food, the optical lens 50 can be removed from the upper cover assembly 70 together with the movable cover 22 by removing the movable cover 22, so as to facilitate the replacement or cleaning of the optical lens 50 and ensure the transmittance effect of the optical lens 50 on the detection field of view 31. The optical lens 50 can also be detachably connected to the movable cover 22, so that only the optical lens 50 can be replaced.

[0071] In this embodiment, by providing an optical lens 50, while ensuring that the detection field of view 31 of the non-contact temperature measurement sensor 30 passes through, the cooking chamber 14 is isolated from the non-contact temperature measurement sensor 30, thereby preventing the steam generated during the food heating process (or the high-temperature air in the cooking chamber 14) from directly contacting the non-contact temperature measurement sensor 30, effectively extending the service life of the non-contact temperature measurement sensor 30, and thereby improving the service life of the microwave rice cooker.

[0072] According to one embodiment of the present invention, Figures 1 to 5 As shown, the cover body 20 includes a movable cover plate 22 and a shielding cover plate 21, the pot body 10 includes an inner pot 12 and a shielding cover 11, the shielding cover 11 and the shielding cover plate 21 enclose a shielding cavity 13, the inner pot 12 and the movable cover plate 22 enclose a cooking cavity 14, and the inner pot 12 and the movable cover plate 22 are located in the shielding cavity 13; the optical lens 50 is arranged on the shielding cover plate 21.

[0073] In this embodiment, food is placed in the cooking chamber 14 for microwave heating. The shielding cover 21 and shielding cover 11 enclose the food, effectively preventing leakage of microwaves used to heat the food. The inner pot 12 and movable cover 22 confine the steam generated during food heating, preventing it from overflowing to the side of the shielding cover 21 facing away from the cooking chamber 14.

[0074] In this embodiment, the shielding cover 11 and the shielding cover plate 21 can be made of metal materials and can be manufactured using cold-rolled plates and epoxy resin powder spraying processes; of course, they can also be made of carbon fiber, metallized ceramics and other materials to achieve microwave shielding effects.

[0075] In this embodiment, the cover 20 further includes a first sealing member 24, which is sealingly mounted between the first through-hole 211 of the shielding cover 21 and the second through-hole 221 of the movable cover 22. The first sealing member 24 defines a first channel 241 adapted to detect passage through the field of view 31. By providing a sealing connection between the first through-hole 211 and the second through-hole 221, the first channel 241 of the first sealing member 24 does not interfere with temperature measurement by the non-contact remote sensor. It also prevents steam from entering the space between the shielding cover 21 and the movable cover 22, potentially causing the steam to condense upon encountering the cooler shielding cover 21, forming liquid that can then flow back into the cooking chamber 14 and contaminate the food.

[0076] In this embodiment, a snap-in groove is provided on the outer periphery of the first sealing member 24, and the second through hole 221 is snap-fitted into the snap-in groove for fixation, and the end of the first sealing member 24 along the extension direction of the detection field of view 31 abuts against the shielding cover plate 21; in other embodiments, the first sealing member 24 can also be provided to be connected to the second through hole 221 by means of an adhesive connection.

[0077] In this embodiment, the first through hole 211 and the second through hole 221 are circular. Of course, the first through hole 211 and the second through hole 221 can also be rectangular, elliptical, etc., as long as they are suitable for detecting the passage of the field of view 31.

[0078] It is understandable that when metal materials are used to make the shielding cover 11 and the shielding cover 21, the surface of the metal material is provided with a coating that does not react with steam or no coating is provided, and food can be placed directly in the shielding cavity 13 without providing a movable cover 22 and an inner pot 12, thereby improving the flexibility of use of the microwave rice cooker.

[0079] According to one embodiment of the present invention, Figure 4 and Figure 5 As shown, the shielding cover 21 is recessed toward the non-contact temperature measurement sensor 30 to form a mounting position, and the optical lens 50 is fixed at the mounting position.

[0080] In this embodiment, the optical lens 50 can be pre-fixed in the installation position, and since the shielding cover 21 is recessed toward the side of the non-contact temperature sensor 30 to form the installation position, that is, the fitting surface between the optical lens 50 and the installation position is located on the side of the optical lens 50 away from the cooking chamber 14, the rising steam can press the contact surface between the optical lens 50 and the installation position, effectively improving the sealing effect.

[0081] In this embodiment, the optical lens 50 and the mounting position of the shielding cover 21 are connected by gluing; of course, a fixed sealing connection between the two can also be achieved by threaded fitting, positioning hole and screw fitting, etc.

[0082] In this embodiment, the mounting position is adapted to the shape of the optical lens 50 and is rectangular. Of course, the shape of the mounting position can be adaptively adjusted based on the different shapes of the optical lens 50 .

[0083] According to one embodiment of the present invention, Figure 7 As shown, along the extension direction of the detection field of view 31, the minimum distance D between the optical lens 50 and the inner wall of the cooking chamber 14 is less than or equal to 10 mm. This prevents steam from condensing on the optical lens 50 after long-term use, and prevents rice soup or food residue from remaining on the side of the optical lens 50 facing the cooking chamber 14, which becomes difficult to clean and interferes with the sensor's temperature measurement. Setting distance D effectively ensures that the user can wipe the optical lens 50 through the movable cover (or through the shielding cover 21 if the cover body 20 only has the shielding cover 21), reducing maintenance difficulties.

[0084] According to one embodiment of the present invention, Figure 1 、 Figure 2 as well as Figures 9 and 10As shown, the cover 20 includes a movable cover plate 22, a shielding cover plate 21, and a plastic inner cover 40. The pot body 10 includes an inner pot 12 and a shielding cover 11. The shielding cover 11 and the shielding cover plate 21 enclose a shielding chamber 13. The inner pot 12 and the movable cover plate 22 enclose a cooking chamber 14. The inner pot 12 and the movable cover plate 22 are located within the shielding chamber 13. The plastic inner cover 40 is located on the side of the shielding cover plate 21 facing away from the movable cover plate 22. The plastic inner cover 40 isolates the non-contact temperature sensor 30 from the shielding cover plate 21, keeping the non-contact temperature sensor 30 away from the high-temperature environment inside the cooking chamber 14, thereby improving its service life.

[0085] The optical lens 50 is disposed on at least one of the plastic inner cover 40 , the shielding cover 21 or the movable cover 22 to isolate the cooking chamber 14 from the non-contact temperature measurement sensor 30 .

[0086] According to one embodiment of the present invention, Figures 1 to 5 As shown, a clearance hole 80 is provided on the cover 20 at a position corresponding to the non-contact temperature measurement sensor 30, a sealing component 23 is provided at the clearance hole 80, and a channel 231 is provided in the sealing component 23 (the structure of the channel 231 can be referred to Figure 14 ), the optical lens 50 is sealed and connected to the channel 231. The provision of the sealing member 23 effectively prevents steam in the cooking chamber 14 from entering the side where the non-contact temperature sensor 30 is located through the gap between the optical lens 50 and the cover 20, thereby effectively improving the sealing effect of the cover 20.

[0087] According to one embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 6 and Figure 7 As shown, when the cover body 20 is provided with a movable cover plate 22 , the clearance hole 80 includes a second through hole 221 provided on the movable cover plate 22 , and the sealing component 23 is provided at the second through hole 221 .

[0088] In this embodiment, the sealing component 23 can be the third sealing component 26 shown in the figure. The channel provided in the third sealing component 26 is a third channel 261, which is suitable for detecting the passage of the field of view 31. The inner wall of the third channel 261 is provided with a second annular groove 262, and the optical lens 50 is embedded in the second annular groove 262.

[0089] In this embodiment, the third sealing member 26 and the optical lens 50 isolate the space in the cover body 20 located on the side of the movable cover plate 22 facing away from the cooking chamber 14 from the cooking chamber 14 .

[0090] In this embodiment, when the third sealing member 26 is made of an elastic material, such as silicone, due to the deformation ability of the elastic material, even if the optical lens 50 is impacted by external force after installation, it can be well buffered under the elastic force of the third sealing member 26, thereby effectively improving the service life of the optical lens 50.

[0091] According to one embodiment of the present invention, Figure 1 、 Figure 2 、 Figure 9 and Figure 10 As shown, when the cover body 20 includes a plastic inner cover 40 and a shielding cover plate 21, the clearance hole 80 includes a first through hole 211 set in the shielding cover plate 21, and a third through hole 41 set in the plastic inner cover 40, and the sealing component 23 is set at the third through hole 41, and the sealing component 23 abuts and seals between the plastic inner cover 40 and the shielding cover plate 21.

[0092] In this embodiment, the sealing component 23 can be the second sealing component 25 shown in the figure. The channel provided in the second sealing component 25 is a second channel 251. The second channel 251 of the second sealing component 25 is set so as not to affect the temperature measurement of the non-contact temperature sensor 30, and also to prevent steam from entering the space between the shielding cover plate 21 and the plastic inner cover 40, causing damage to the components arranged in the space. Moreover, the setting of the second sealing component 25 ensures that even if the first sealing component 24 fails, only the space between the shielding cover plate 21 and the movable cover plate 22 inside the cover body 20 is invaded by steam, thereby effectively reducing the maintenance and replacement cost of the cover body 20.

[0093] In this embodiment, a first annular groove 252 is formed on the inner wall of the second channel 251 , and an optical lens 50 is embedded in the first annular groove 252 . The optical lens 50 isolates the non-contact temperature measurement sensor 30 from the cooking chamber 14 .

[0094] In this embodiment, when the second sealing member 25 is made of an elastic material, such as silicone, due to the deformation ability of the elastic material, even if the optical lens 50 is impacted by external force after installation, it can be well buffered under the elastic force of the second sealing member 25, thereby effectively improving the service life of the optical lens 50.

[0095] In this embodiment, combined with Figure 10 As shown, the plastic inner cover 40 has a convex ring protruding in the direction away from the detection field of view 31, and the second sealing member 25 is provided with a groove corresponding to the convex ring. Along the extension direction, one end of the second sealing member 25 abuts the shielding cover plate 21; of course, it can also be set in a form that the second sealing member 25 and the shielding cover plate 21 are connected by the convex ring and the groove, and the second sealing member 25 abuts the plastic inner cover 40; in other embodiments, the second sealing member 25 can also be provided to be connected to the third through hole 41 or the second through hole 221 by an adhesive connection.

[0096] According to one embodiment of the present invention, Figure 7 As shown, the sealing component 23 also includes a fourth sealing member 27. The first end of the fourth sealing member 27 is sleeved over the probe of the non-contact temperature sensor 30, and the second end abuts the shielding cover 21. The fourth sealing member 27 defines a fourth channel 271, which communicates with the third channel 261. The detection field 31 extends over the food surface through the fourth channel 271 and the third channel 261 for temperature measurement.

[0097] In this embodiment, the fourth seal 27 realizes a sealed connection between the probe of the non-contact temperature sensor 30, the plastic inner cover and the shielding cover 21, preventing steam from entering the space between the plastic inner cover and the shielding cover 21 or the space on the side of the plastic inner cover facing away from the cooking chamber 14 (above the plastic inner cover in the figure); and the provision of the fourth seal 27 ensures that even if the third seal 26 fails, steam only enters the space between the movable cover 22 and the shielding cover 21, and does not directly contact the non-contact temperature sensor 30, thereby effectively extending the service life of the non-contact temperature sensor 30.

[0098] In this embodiment, when the first end of the fourth sealing member 27 is sleeved onto the probe, an annular protrusion projects from the inner wall of the fourth channel 271 toward the outer wall of the probe. This reduces the contact area between the fourth sealing member 27 and the probe, facilitating assembly while ensuring a sealing effect. Alternatively, the fourth sealing member 27 may be glued to the probe, with the annular protrusion provided on the outer wall of the probe.

[0099] According to one embodiment of the present invention, Figure 12 As shown, the projection of the detection field of view 31 onto the plane of the optical lens 50 falls within the optical lens 50, that is, the area S2 of the orthographic projection of the detection field of view 31 along its extension direction is less than or equal to the area S1 of the optical lens 50. This ensures that before the detection field of view 31 of the non-contact temperature sensor 30 covers the food surface, it will not be blocked by non-food structures (such as the sealing component 23 or the cover 20 connected to the periphery of the optical lens 50), which could cause the detection field of view 31 to detect the temperature of non-food items. Alternatively, the detection field of view 31 covering an area too small through the first through hole 211 could only detect a small portion of the food surface, thereby preventing inaccurate food temperature detection.

[0100] In one embodiment, combined Figure 12 As shown, in the cooking chamber 14, the projection of the detection field 31 on any horizontal plane falls within the cross section of the cooking chamber 14 on the same horizontal plane; that is, Figure 12In the cooking chamber 14, the cross-sectional area S of the detection field of view 31 is less than or equal to the cross-sectional area S0 of the cooking chamber 14. This avoids the possibility that when the detection field of view 31 covers the surface of the food, it may detect part of the inner wall of the shielding cover 11 other than the food, resulting in inaccurate detection of the food temperature.

[0101] According to one embodiment of the present invention, Figure 13 and Figure 14 As shown, when the cover body 20 includes a movable cover plate 22, a shielding cover plate 21 and a plastic inner cover 40, the clearance hole 80 includes a second through hole 221 provided on the movable cover plate 22, a first through hole 211 provided on the shielding cover plate 21, and a third through hole 41 provided on the plastic inner cover 40; the first end of the sealing component 23 seals against the movable cover plate 22, the second end of the sealing component 23 seals against the plastic inner cover 40, and the sealing component 23 is sealed and embedded in the first through hole 211.

[0102] It should be noted that the cover body 20 is provided with a multi-layer structural layer (such as the movable cover plate 22, the shielding cover plate 21 and the plastic inner cover 40 in the present application), and seals need to be provided between the layers to prevent steam from entering the space between different structural layers and causing damage to the internal components. However, multiple structural layers require multiple seals, and there is a problem of low assembly efficiency of the cover body 20; and the provision of multiple seals increases the probability of sealing leakage inside the cover body 20, affecting the service life of the microwave rice cooker.

[0103] In this embodiment, the first end of the sealing component 23 seals against the movable cover plate 22, the second end of the sealing component 23 seals against the plastic inner cover 40, and the sealing component 23 seals and engages with the first through-hole 211. That is, only one integral sealing component 23 is provided between the movable cover plate 22, the shielding cover plate 21, and the plastic inner cover 40. This simplifies the assembly process of the cover body 20, improves assembly efficiency, and reduces the number of contact points between the sealing component 23 and the inner structural layer of the cover plate, effectively reducing the probability of seal leakage.

[0104] Of course, the first end of the sealing component 23 may also be in a form of being engaged with the second through hole 221 , and the second end may also be in a form of being engaged with the third through hole 41 to achieve sealing.

[0105] According to one embodiment of the present invention, Figure 14 and Figure 15 As shown, along the extension direction of the detection field of view 31 , the shielding cover 21 can move relative to the plastic inner cover 40 .

[0106] It should be noted that in the related art, the cover body 20 and the pot body 10 are usually connected by a hinge spring. When the cover body 20 is closed on the pot body 10, under the reaction force of the hinge spring, the cover body 20 will move a small distance away from the pot body 10, resulting in a gap between the cover body 20 and the pot body 10, which increases the gap between the shielding cover 11 and the shielding cover plate 21, causing microwave leakage and affecting user safety.

[0107] In this embodiment, the shielding cover 21 is movable relative to the plastic inner cover 40. That is, when the cover 20 is closed on the pot body 10, the plastic inner cover 40 moves away from the pot body 10 due to the force of the hinge spring, while the shielding cover 21 and the movable cover 22 remain stationary relative to the pot body 10, ensuring that the gap between the shielding cover 21 and the shielding cover 11 remains unchanged, thereby preventing microwave leakage.

[0108] In this embodiment, the sealing component 23 includes a main body 233 and an elastic portion 234. The two elastic portions 234 are located at either end of the main body 233 along its extension direction. The main body 233 is engaged with the first through-hole 211, and the two elastic portions 234 respectively abut against the movable cover 22 and the plastic inner cover 40. While ensuring the sealing effect of the sealing component 23, the deformation of the elastic portions 234 enables relative movement of the shielding cover 21 between the plastic inner cover 40 and the movable cover 22.

[0109] In this embodiment, the main body 233 can be made of elastic material and integrally formed with the elastic part 234 for easy manufacturing. Of course, the main body 233 can also be made of non-elastic material, such as plastic, to ensure the connection strength between the main body 233 and the shielding cover 21.

[0110] In this embodiment, combined with Figure 14 and Figure 16 As shown, the lengths of the elastic portions 234 at both ends of the main body 233 along the extension direction can be different. Therefore, by changing the length of the elastic portions 234, the relative position relationship between the shielding cover 21 and the plastic inner cover 40 or the movable cover 22 can be adjusted, and the installation flexibility is higher.

[0111] According to one embodiment of the present invention, Figure 16 As shown, along the extension direction, the elastic portion 234 includes at least one bent section 2341. Given the same wall thickness, the elastic portion 234 having the bent section 2341 is more deformable along the extension direction than the elastic portion 234 without the bent section. This helps ensure that the elastic portion 234 has sufficient wall thickness to seal against the movable cover 22 or the plastic inner cover 40 while ensuring the movable distance of the shielding cover 21.

[0112] According to one embodiment of the present invention, Figure 16As shown, the opening of the bent section 2341 is oriented toward the axis of the channel 231. That is, the wall surface of the elastic portion 234 first deviates away from the axis of the channel 231, and then deviates toward the axis of the channel 231 at the inflection point of the bent portion, so that the elastic portion 234 can effectively avoid the detection field of view 31, thereby improving the detection effect.

[0113] The sealing component 23 is integrally formed, and the main body 233 can be made of elastic material and integrally formed with the elastic part 234 for ease of manufacturing.

[0114] According to one embodiment of the present invention, Figure 16 As shown, the wall thicknesses of the bent section 2341 on either side of the inflection point are the first wall thickness and the second wall thickness, respectively. Along the extension direction, the difference between the length of the elastic portion 234 and the sum of the first and second wall thicknesses is greater than or equal to 1 mm. This ensures that even when the walls on either side of the inflection point overlap, the elastic portion 234 still retains 1 mm of shrinkage space, ensuring that the shielding cover 21 can move relative to the movable cover 22, thereby preventing microwave leakage.

[0115] In this embodiment, the elastic portion 234 is provided with a bending section 2341, and correspondingly, a first wall thickness and a second wall thickness are provided; when the elastic portion 234 is provided with multiple bending sections 2341, it is necessary to ensure that the length of the elastic portion 234 and the difference between all the first wall thicknesses and the second wall thicknesses are greater than or equal to 1 mm.

[0116] In this embodiment, combined with Figure 5 As shown, along the extension direction, the lengths of the elastic portion 234 located upstream and the elastic portion 234 located downstream are different, and their corresponding first wall thicknesses and second wall thicknesses are also different. In order to ensure that the shielding cover 21 has a certain range of movement at both ends along the extension direction, it is necessary to ensure that the difference between the length L1 of the upstream elastic portion 234 and the sum of the first wall thickness T1 and the second wall thickness T2 is greater than 1 mm; the same applies to the downstream elastic portion 234, ensuring that the difference between L2 and the sum of T3 and T4 is greater than 1 mm.

[0117] According to one embodiment of the present invention, Figure 14 and Figure 16 As shown, at least one of the sidewall of the sealing component 23 and the inner wall of the first through hole 211 is provided with a protruding ring 212, and the other is provided with an annular groove 232 that seals with the protruding ring 212. The protruding ring 212 and the annular groove 232 ensure a sealed connection between the sealing component 23 and the first through hole 211, thereby ensuring isolation between the space between the plastic inner cover 40 and the shielding cover plate 21, and between the shielding cover plate 21 and the movable cover plate 22. Even if steam invades one of the spaces, the safety of the other space will not be affected.

[0118] In this embodiment, the convex ring 212 is arranged on the inner wall of the first through hole 211, and the annular groove 232 is arranged on the sealing component 23; the convex ring 212 can also be arranged on the sealing component 23, and the annular groove 232 can be arranged on the inner wall of the first through hole 211; in other embodiments, the sealing component 23 and the shielding cover plate 21 can also be sealed by gluing.

[0119] Finally, it should be noted that the above embodiments are intended only to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A microwave rice cooker, characterized in that: include: Cover (20); The pot body (10) is adapted to be combined with the cover body (20) to form a cooking chamber (14); A non-contact temperature measurement sensor (30) is provided on the cover (20) and is adapted to form a detection field of view (31) in the direction of the cooking chamber (14). A microwave generating device (90) is used to send microwaves into the cooking cavity (14).

2. The microwave rice cooker according to claim 1, characterized in that The cover (20) covers the top of the pot body (10), and / or a steam valve (60) is provided on the cover (20), and the steam valve (60) is suitable for discharging steam in the cooking chamber (14).

3. The microwave rice cooker according to claim 1, characterized in that The microwave rice cooker further comprises an optical lens (50), which is sealedly connected to the cover (20) and is located between the cooking cavity (14) and the non-contact temperature measurement sensor (30), suitable for the detection field of view (31) to pass through, and isolates the cooking cavity (14) from the non-contact temperature measurement sensor (30).

4. The microwave rice cooker according to claim 3, characterized in that The cover body (20) comprises a movable cover plate (22) and an upper cover assembly (70); the movable cover plate (22) and the pot body (10) are combined to form the cooking chamber (14); the movable cover plate (22) is detachably arranged on the upper cover assembly (70), and the optical lens (50) is arranged on the movable cover plate (22).

5. The microwave rice cooker according to claim 3, characterized in that The cover body (20) comprises a movable cover plate (22) and a shielding cover plate (21); the pot body (10) comprises an inner pot (12) and a shielding cover (11); the shielding cover (11) and the shielding cover plate (21) enclose a shielding cavity (13); the inner pot (12) and the movable cover plate (22) enclose a cooking cavity (14); the inner pot (12) and the movable cover plate (22) are located in the shielding cavity (13); The optical lens (50) is arranged on the shielding cover plate (21).

6. The microwave rice cooker according to claim 5, characterized in that The shielding cover (21) is recessed toward the non-contact temperature measurement sensor (30) to form a mounting position, and the optical lens (50) is fixed to the mounting position.

7. The microwave rice cooker according to claim 3, characterized in that Along the extension direction of the detection field of view (31), the minimum distance between the optical lens (50) and the inner wall of the cooking chamber (14) is less than or equal to 10 mm.

8. The microwave rice cooker according to claim 3, characterized in that The cover body (20) comprises a movable cover plate (22), a shielding cover plate (21) and a plastic inner cover (40); the pot body (10) comprises an inner pot (12) and a shielding cover (11); the shielding cover (11) and the shielding cover plate (21) are combined to form a shielding cavity (13); the inner pot (12) and the movable cover plate (22) are combined to form the cooking cavity (14); the inner pot (12) and the movable cover plate (22) are located in the shielding cavity (13); The plastic inner cover (40) is located on a side of the shielding cover (21) facing away from the movable cover (22), and the optical lens (50) is arranged on at least one of the plastic inner cover (40), the shielding cover (21) or the movable cover (22).

9. The microwave rice cooker according to any one of claims 1 to 8, characterized in that A clearance hole (80) is provided on the cover (20) at a position corresponding to the non-contact temperature measurement sensor (30), a sealing component (23) is provided at the clearance hole (80), a channel (231) is provided in the sealing component (23), and the optical lens (50) is sealed and connected to the channel (231).

10. The microwave rice cooker according to claim 9, characterized in that When the cover body (20) is provided with a movable cover plate (22), the clearance hole (80) includes a second through hole (221) provided on the movable cover plate (22), and the sealing component (23) is provided at the second through hole (221).

11. The microwave rice cooker according to claim 9, characterized in that When the cover body (20) includes a plastic inner cover (40) and a shielding cover plate (21), the relief hole (80) includes a first through hole (211) provided on the shielding cover plate (21), and a third through hole (41) provided on the plastic inner cover (40), and the sealing component (23) is provided at the third through hole (41), and the sealing component abuts and seals between the plastic inner cover and the shielding cover plate.

12. The microwave rice cooker according to claim 9, characterized in that In a case where the cover body (20) includes a movable cover plate (22), a shielding cover plate (21) and a plastic inner cover (40), the clearance hole (80) includes a second through hole (221) provided on the movable cover plate (22), a first through hole (211) provided on the shielding cover plate (21), and a third through hole (41) provided on the plastic inner cover (40); The first end of the sealing component (23) seals against the movable cover plate (22), the second end of the sealing component (23) seals against the plastic inner cover (40), and the sealing component (23) is seal-engaged in the first through hole (211).

13. The microwave rice cooker according to claim 12, characterized in that: Along the extension direction of the detection field of view (31), the shielding cover (21) is movable relative to the plastic inner cover (40); The sealing component (23) includes a main body (233) and two elastic parts (234), the two elastic parts (234) are respectively located at two ends of the main body (233) along the extension direction, the main body (233) is embedded in the first through hole (211), and the two elastic parts (234) respectively abut against the movable cover plate (22) and the plastic inner cover (40).

14. The microwave rice cooker according to claim 13, characterized in that Along the extension direction, the elastic portion (234) includes at least one bending section (2341).

15. The microwave rice cooker according to claim 14, characterized in that: The opening of the bending section (2341) faces the axial direction of the channel (231), and the sealing component is an integrally formed component.

16. The microwave rice cooker according to claim 14, characterized in that The wall thicknesses of the bending section (2341) on both sides of the inflection point are respectively the first wall thickness and the second wall thickness, and along the extension direction, the difference obtained by subtracting the sum of all the first wall thicknesses and the second wall thicknesses from the length of the elastic portion (234) is greater than or equal to 1 mm.

17. The microwave rice cooker according to claim 12, characterized in that At least one of the side wall of the sealing component (23) and the inner wall of the first through hole (211) is provided with a convex ring (212), and the other is provided with a ring groove (232) that seals with the convex ring (212).

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