Cooking utensil capable of accurately measuring temperature

Abstract

The cooking utensil comprises a pot body with a cooking cavity and a pot cover covering the pot body, the pot cover comprises a lining cover and an inner cover located on the inner side of the lining cover, the lining cover is provided with an infrared temperature measuring device and a sealing piece, the infrared temperature measuring device comprises a light-transmitting piece and an infrared temperature measuring probe, and the infrared temperature measuring probe is arranged on the inner side of the lining cover. The infrared temperature measuring probe is fixed on the lining cover, the light-transmitting piece is arranged corresponding to the infrared temperature measuring probe, a light-transmitting hole corresponding to the light-transmitting piece is formed in the inner cover, and at least part of the sealing piece is arranged between the light-transmitting piece and the light-transmitting hole, so that a cavity with relatively stable air pressure is formed below the light-transmitting piece. Due to the cavity, after reaching the light-transmitting hole from bottom to top, the bubbles are difficult to continuously extrude upwards into the cavity under the influence of factors such as air in the cavity and the volume of the bubbles, so that the probability that the bubbles enter the cavity and are in contact with the light-transmitting piece is reduced, the cleanness of the light-transmitting piece is favorably kept, and the accuracy of the infrared temperature measuring device is ensured.

Description

Technical Field

[0001] The invention belongs to the field of household appliances, and in particular relates to a cooking utensil with accurate temperature measurement. Background Art

[0002] In order to better control the cooking process and improve the cooking effect, cooking utensils such as rice cookers or pressure cookers are generally equipped with temperature measuring devices. In the prior art, thermistors are often used as temperature sensors. Such temperature measuring devices generally have two forms. One is to set the temperature measuring device on the pot body, and measure the temperature of the pot by contacting the temperature sensor with the outer surface of the pot. The other is to set the temperature measuring device on the pot cover, and measure the temperature of the steam by extending the temperature sensor into the cooking cavity for a certain length. However, the heat of the outer wall of the pot or the steam needs to be conducted to the metal shell of the temperature measuring device first, and then to the thermistor in the metal shell. Such multi-link heat conduction will cause a certain delay in temperature measurement, and the temperature sensed by the thermistor will have a large deviation from the actual temperature of the food, which cannot reflect the temperature of the food in a timely and accurate manner, and the accuracy is poor.

[0003] For this reason, some cooking utensils use infrared temperature measurement modules for temperature measurement. By setting an infrared temperature sensor between the surface cover and the lining cover of the pot lid, and performing non-contact detection of the temperature in the cooking cavity through the inner cover, the accuracy of temperature measurement is improved and more accurate temperature control is achieved. Since infrared rays cannot directly penetrate the existing metal inner cover, this type of cooking utensils sets the inner cover as a light-transmitting part as a whole, or sets a light-transmitting part on the inner cover. However, when cooking porridge, rice and other foods, especially when cooking at high power, the slurry (such as rice soup, etc.) in the cooking cavity boils and forms a large number of bubbles. These bubbles containing substances such as starch rise and contact the light-transmitting part, which easily causes pollution of the light-transmitting part, reducing the temperature measurement accuracy of the infrared temperature sensor, which needs to be improved. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a cooking utensil with accurate temperature measurement, which can reduce the probability of contamination of the light-transmitting member and improve the temperature measurement accuracy of the infrared temperature measuring device.

[0005] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0006] A cooking appliance with accurate temperature measurement, comprising a pot body with a cooking cavity and a pot lid covering the pot body. The pot lid includes a lining lid and an inner lid located inside the lining lid. An infrared temperature measurement device and a seal are provided on the lining lid. The infrared temperature measurement device includes a light-transmitting member and an infrared temperature measurement probe. The infrared temperature measurement probe is fixed on the lining lid, the light-transmitting member is arranged corresponding to the infrared temperature measurement probe, a light-transmitting hole is provided on the inner lid corresponding to the light-transmitting member, and at least part of the seal is arranged between the light-transmitting member and the light-transmitting hole, so as to form a cavity with relatively stable air pressure below the light-transmitting member.

[0007] In an embodiment of the present invention, the seal includes a sealing section located between the light-transmitting hole and the light-transmitting member, and the sealing section is provided with a hollow; the lower end of the sealing section abuts against the outer periphery of the light-transmitting hole, and the sealing section, the light-transmitting member and the inner lid enclose the cavity, or the lower end of the sealing section abuts against the inner periphery of the light-transmitting hole, and the sealing section and the light-transmitting member enclose the cavity.

[0008] In an embodiment of the present invention, the seal further includes a clamping section, and at least part of the clamping section wraps the light-transmitting member; or, the light-transmitting member is located above the seal and abuts against the seal.

[0009] In an embodiment of the present invention, an installation groove is provided on the inner side of the clamping section, and the light-transmitting member is embedded in the installation groove to be in sealing cooperation with the seal; or, the peripheral wall of the light-transmitting member abuts against the inner wall of the clamping section for sealing.

[0010] In an embodiment of the present invention, the clamping section includes an upper edge and a lower edge, the installation groove is formed between the upper edge and the lower edge, a second light-transmitting hole is provided on the lower edge, and the second light-transmitting hole is in a trumpet shape with a larger lower part and a smaller upper part, or the second light-transmitting hole is a vertical hole.

[0011] In an embodiment of the present invention, an installation hole for installing the seal is provided on the lining lid, and at least part of the seal is located between the inner wall of the installation hole and the light-transmitting member.

[0012] In an embodiment of the present invention, the light-transmitting member is arranged inside the seal, the infrared temperature measurement probe is arranged above the light-transmitting member and at least part of it extends into the seal.

[0013] In an embodiment of the present invention, the infrared temperature measurement device further includes a fixing plate for fixing the infrared temperature measurement probe, the upper end of the seal is provided with an outward-turned edge, and the fixing plate is fixed on the lining lid and clamps the outward-turned edge with the lining lid.

[0014] In an embodiment of the present invention, the liner cover is provided with a mounting hole for mounting the seal. The outer peripheral side of the seal is provided with a first plugging portion, and the outer periphery of the mounting hole is provided with a second plugging portion. The first plugging portion and the second plugging portion are in plugging cooperation.

[0015] In an embodiment of the present invention, on the side of the pot lid facing the cooking cavity, a decorative lamp is provided. The decorative lamp is located on the outer periphery of the light-transmitting hole and is arranged at intervals around the light-transmitting hole.

[0016] After adopting the above technology, the beneficial effects of the present invention are as follows:

[0017] The present invention is provided with an infrared temperature measuring device with an infrared temperature measuring probe and a light-transmitting member on the liner cover, and a light-transmitting hole is provided on the inner cover corresponding to the light-transmitting member, so that the infrared temperature measuring probe can directly and real-time sense the temperature of the food in the cooking cavity through the light-transmitting member, avoiding the measurement error and lag problem caused by multi-link heat conduction, and judging the actual temperature in the pot more accurately, so as to better control the cooking program; and, by arranging at least part of the seal between the light-transmitting member and the light-transmitting hole to form a cavity below the light-transmitting member, the formed cavity is a semi-closed static space with only the lower opening, and the air therein is not easy to discharge, and the air pressure is relatively stable. When the bubble reaches the light-transmitting hole from bottom to top, it will be affected by factors such as the air in the cavity and its own volume and is difficult to continue squeezing into the cavity upward, reducing the probability of the bubble entering the cavity and contacting the light-transmitting member, which is beneficial to keeping the light-transmitting member clean and ensuring the accuracy of the infrared temperature measuring device. At the same time, in this way, on the one hand, the seal avoids the escape of water vapor and other substances to other positions on the upper surface of the inner cover outside the cavity, and on the other hand, it also avoids the steam, soup, etc. leaked from positions such as the steam valve from entering the cavity from the outside and polluting the light-transmitting member, which is beneficial to further improving the accuracy of the infrared temperature measuring device; in addition, by fixing the infrared temperature measuring probe on the liner cover in this way, setting the light-transmitting member corresponding to the infrared temperature measuring probe, and providing a light-transmitting hole on the inner cover corresponding to the light-transmitting member, the light-transmitting member is located inside the inner cover, reducing the risk of the light-transmitting member being damaged by collision, and there is no need to make major changes to the structures of the original liner cover and inner cover, avoiding the cost problem caused by setting the inner cover as a light-transmitting member as a whole and the installation reliability problem caused by setting the light-transmitting member on a relatively thin inner cover, and enabling the inner cover to use the original metal material, ensuring the service life and cleanability of the inner cover.

[0018] As a preferred embodiment of the present invention, the seal further includes a clamping section, and the clamping section at least partially wraps the light-transmitting member; alternatively, the light-transmitting member is located above the seal and abuts against the seal. Such an arrangement can prevent the water vapor in the cooking cavity from contacting the infrared temperature measurement probe by means of the light-transmitting member and the seal, isolate the infrared temperature measurement probe from the environment in the cooking cavity and perform non-contact temperature measurement, reduce the influence of the cooking cavity environment on the infrared temperature measurement probe, and ensure the sealing of the cavity below the light-transmitting member and the stability of the air pressure in the cavity, thereby further improving the temperature measurement accuracy and service life of the infrared temperature measurement device.

[0019] As a preferred embodiment of the present invention, the clamping section includes an upper edge and a lower edge. An installation groove is formed between the upper edge and the lower edge, and a second light-transmitting hole is provided on the lower edge. The second light-transmitting hole is in the shape of a horn with a larger bottom and a smaller top. Forming an installation groove by the upper edge and the lower edge to clamp the light-transmitting member can make the installation and sealing of the light-transmitting member more reliable; at the same time, the horn-shaped second light-transmitting hole can reduce the light shielding of the lower edge and thus increase the light input, so that more light within the detection range of the infrared temperature measurement probe converges towards the light-transmitting member, achieving good signal detection and reception by the infrared temperature measurement probe, thereby further improving the accuracy of temperature measurement.

[0020] As a preferred embodiment of the present invention, the lining cover is provided with an installation hole for installing the seal, and at least part of the seal is located between the inner wall of the installation hole and the light-transmitting member. In this way, the light-transmitting member can utilize the flexible characteristics of the seal to fit with the inner wall of the installation hole. While protecting the light-transmitting member, the installation hole can also form good positioning for the light-transmitting member, thereby making the installation of the light-transmitting member more stable, avoiding problems such as displacement and falling off due to vibration, collision, etc., ensuring that the light-transmitting member can stably play its role, and the abutment of the light-transmitting member also makes the seal have a better sealing effect, thus better preventing water vapor in the cooking cavity from entering the lining cover and causing damage to electronic components, and ensuring the sealing of the cavity below the light-transmitting member and the stability of the air pressure in the cavity, improving the temperature measurement accuracy.

[0021] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the pot lid and the inner pot under one embodiment of the present invention;

[0023] Figure 2 is Figure 1 a partial enlarged structural diagram at A in

[0024] Figure 3 It is an exploded structural diagram of the pot lid under one embodiment of the present invention;

[0025] Figure 4Schematic structural diagram of the infrared temperature measuring device and the seal under an embodiment of the present invention;

[0026] Figure 5 Schematic structural diagram of the seal under an embodiment of the present invention;

[0027] Figure 6 Schematic partial structural diagram of the pot lid under an embodiment of the present invention;

[0028] Figure 7 Schematic partial structural diagram of the pot lid under an embodiment of the present invention;

[0029] Figure 8 Schematic partial structural diagram of the pot lid under an embodiment of the present invention.

[0030] Reference numerals: pot lid 100; face cover 110; lining cover 120; mounting hole 130; annular convex 140; fixing column 150; inner cover 200; sunken platform 210; light-transmitting hole 300; infrared temperature measuring device 400; light-transmitting member 410; infrared temperature measuring probe 420; fixing plate 430; seal 500; clamping section 510; upper edge wrapping 511; lower edge wrapping 512; mounting groove 520; second light-transmitting hole 530; sealing lip 540; outward-turning edge 550; sealing rib 551; annular edge 560; cooking cavity 600; pot liner 610; cavity 700. Detailed implementation manners

[0031] In order to more clearly illustrate the overall concept of the present invention, the following will be described in detail by way of examples in conjunction with the drawings of the specification.

[0032] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below. Additionally, in the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "top", "bottom", "inner", "outer", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0033] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "embodiment", "example", "an embodiment", "example", or "specific example" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0035] Reference Figure 1 、 Figure 3 、 Figure 7 and Figure 8 , a cooking appliance with accurate temperature measurement provided in this embodiment includes a pot body with a cooking cavity 600 and a pot lid 100 covering the pot body. The pot lid 100 includes a lining lid 120 and an inner lid 200 located inside the lining lid 120. An infrared temperature measurement device 400 and a seal 500 are provided on the lining lid 120. The infrared temperature measurement device 400 includes a light-transmitting member 410 and an infrared temperature measurement probe 420. The infrared temperature measurement probe 420 is fixed on the lining lid 120. The light-transmitting member 410 is arranged corresponding to the infrared temperature measurement probe 420. A light-transmitting hole 300 is provided on the inner lid 200 corresponding to the light-transmitting member 410. At least part of the seal 500 is arranged between the light-transmitting member 410 and the light-transmitting hole 300, so as to form a cavity 700 with relatively stable air pressure below the light-transmitting member 410.

[0036] Specifically, the general structure of the pot body is in the shape of a rounded cuboid or a cylinder, with an accommodating space inside. A pot liner 610 for holding ingredients such as rice and soup is provided in the accommodating space. The top of the pot body is provided with a lid 100 that can be opened and closed. The lid 100 and the pot body can be hinged or separated. Among them, the shape of the lid 100 is adapted to that of the pot body, and the inner lid 200 is arranged corresponding to the pot liner 610. When the lid 100 is closed on the pot body, a cooking cavity 600 is formed between the inner lid 200 and the pot liner 610. The pot liner 610 transfers heat to the cooking cavity 600 under the action of the heating device, and raises the temperature in the cooking cavity 600.

[0037] To measure the temperature in the cooking cavity 600, in this embodiment, an infrared temperature measuring device 400 with an infrared temperature measuring probe 420 and a light transmissive member 410 is provided on the lining cover 120, and a light transmissive hole 300 is provided on the inner lid 200 corresponding to the light transmissive member 410, so that the infrared temperature measuring probe 420 can directly and real-time sense the temperature of the ingredients in the cooking cavity 600 through the light transmissive member 410, avoiding the measurement error and lag problems caused by multi-link heat conduction, and making the judgment of the actual temperature in the pot more accurate, so that the cooking program can be better controlled; and, by arranging at least part of the seal 500 between the light transmissive member 410 and the light transmissive hole 300 to form a cavity 700 below the light transmissive member 410, the formed cavity 700 is a semi-closed static space with only the lower opening, and the air in it is not easy to discharge, and the air pressure is relatively stable. When the bubbles reach the light transmissive hole 300 from bottom to top, they will be affected by factors such as the air in the cavity 700 and their own volume and are difficult to continue squeezing into the cavity 700 upward, reducing the probability of the bubbles entering the cavity 700 and contacting the light transmissive member 410, which is beneficial to keeping the light transmissive member 410 clean and ensuring the accuracy of the infrared temperature measuring device 400. At the same time, in this way, by means of the seal 500, on the one hand, it avoids the escape of water vapor and other substances to other positions on the upper surface of the inner lid outside the cavity 700, and on the other hand, it also avoids the steam, soup, etc. leaking from positions such as the steam valve from the outside into the cavity 700 and polluting the light transmissive member 410, which is beneficial to further improving the accuracy of the infrared temperature measuring device 400; in addition, by fixing the infrared temperature measuring probe 420 on the lining cover 120 in this way, arranging the light transmissive member 410 corresponding to the infrared temperature measuring probe 420, and providing a light transmissive hole 300 on the inner lid 200 corresponding to the light transmissive member 410, the light transmissive member 410 is also located inside the inner lid 200, reducing the risk of the light transmissive member 410 being damaged by collision, and there is no need to make major changes to the structures of the original lining cover and inner lid, avoiding the cost problem caused by setting the inner lid as a whole light transmissive member and the installation reliability problem caused by setting the light transmissive member on a thinner inner lid, and enabling the inner lid 200 to use the original metal material, with higher strength and the inner lid can be cleaned with hard materials such as steel wool, ensuring the service life and cleanability of the inner lid.

[0038] It should be noted that the form of the light-transmitting member 410 is not limited in the present invention. The light-transmitting member 410 may be a filter that filters visible light and is transmissive to infrared rays, or may be an ordinary light-transmitting sheet that is transmissive to both infrared rays and visible light. Those skilled in the art can make a choice according to the actual situation.

[0039] The form of the sealing member 500 is also not limited in the present invention. Exemplarily, in a specific embodiment, the sealing member is completely disposed between the light-transmitting member and the light-transmitting hole to form a cavity below the light-transmitting member. The light-transmitting member, the infrared temperature measurement probe, and the sealing member are independently arranged; in another specific embodiment, in addition to the part disposed between the light-transmitting member and the light-transmitting hole, the sealing member extends upward for a section to accommodate the light-transmitting member therein, and the infrared temperature measurement probe and the sealing member are independently arranged; in yet another specific embodiment, in addition to the part disposed between the light-transmitting member and the light-transmitting hole, the sealing member extends upward for a section to accommodate the light-transmitting member and the infrared temperature measurement probe therein; of course, the sealing member can also be arranged in the form of multiple segments or multiple pieces to seal different structures. Those skilled in the art can make a choice according to the actual situation.

[0040] Optionally, the inner cover 200 is detachably disposed inside the lining cover 120, so that the user can remove the inner cover to clean the inner cover and the lining cover, avoiding dirt accumulation and improving the user experience.

[0041] In some embodiments of the present invention, referring to Figure 2 、 Figure 4 、 Figure 5 and Figure 8 , the sealing member 500 includes a sealing section located between the light-transmitting hole 300 and the light-transmitting member 410. The sealing section is hollow, the lower end of the sealing section abuts against the outer periphery of the light-transmitting hole, and the sealing section, the light-transmitting member 410, and the inner cover 200 enclose the cavity 700.

[0042] In a specific embodiment, referring to Figure 2 and Figure 8 , the sealing section is a sealing lip 540 disposed around the light-transmitting hole 300, and the sealing lip 540 abuts against the outer periphery of the light-transmitting hole 300.

[0043] Optionally, referring to Figure 2 and Figure 5, the sealing lip 540 includes a first lip and a second lip. The first lip extends downward and outward to the upper end of the second lip. The second lip extends downward and inward, and the end of the second lip abuts and seals against the solid part on the outer periphery of the light-transmitting hole 300. It can be understood that the sealing lip 540 can also extend inward first and then outward, or be in the form of only having the first lip. Of course, the sealing section can also adopt some other forms, such as a vertically arranged sealing cylinder, and the lower end of the sealing cylinder abuts against the outer periphery of the light-transmitting hole 300, which is not limited herein.

[0044] Furthermore, the inner cover 200 is provided with a sunken platform 210 that depresses downward. The light-transmitting hole 300 is arranged on the bottom wall of the sunken platform 210. The lower end of the sealing section abuts against the bottom wall and / or the side wall of the sunken platform 210 to form the cavity 700 between the sunken platform 210, the sealing section, and the light-transmitting member 410. The setting of the sunken platform 210 can enhance the strength of the inner cover 200, and while forming the cavity 700, reduce the height dimension of the pot lid, which is beneficial to realizing the miniaturized design of the cooking appliance and reducing the space occupied by the cooking appliance.

[0045] In some alternative embodiments of the present invention, refer to Figure 7 , the lower end of the sealing section can also extend into the light-transmitting hole 300 and abut against the inner periphery of the light-transmitting hole 300. The sealing section and the light-transmitting member 410 enclose the cavity 700, which is not limited herein. For example, the lower end of the sealing lip 540 is provided with a ring edge whose diameter is slightly larger than that of the light-transmitting hole 300. The ring edge extends into the light-transmitting hole 300 and is in interference fit with the light-transmitting hole 300. The inner wall of the sealing lip 540 and the lower surface of the light-transmitting member 410 enclose the cavity 700.

[0046] Optionally, the inner diameter of the cavity 700 is larger than the diameter of the light-transmitting hole 300 or the part of the sealing section that extends into the light-transmitting hole 300. Such a setting makes the air in the cavity 700 less likely to be discharged, the air pressure in the cavity is more stable, and the probability of bubbles entering the cavity 700 and contacting the light-transmitting member 410 is further reduced, so as to better keep the light-transmitting member 410 clean and ensure the accuracy of the infrared temperature measuring device 400.

[0047] In some embodiments of the present invention, the sealing member 500 further includes a clamping section 510, and the clamping section 510 at least partially wraps the light-transmitting member 410.

[0048] Such a setting can prevent the water vapor in the cooking cavity 600 from contacting the infrared temperature measurement probe 420 by means of the light-transmitting member 410 and the sealing member 500, isolate the infrared temperature measurement probe 420 from the environment in the cooking cavity 600 and perform non-contact temperature measurement, reduce the influence of the cooking cavity environment on the infrared temperature measurement probe 420, and ensure the sealing of the cavity 700 below the light-transmitting member and the stability of the air pressure in the cavity, thereby further improving the temperature measurement accuracy and service life of the infrared temperature measurement device 400.

[0049] In a specific embodiment, referring to Figure 4 , Figure 5 and Figure 8 , an installation groove 520 is provided on the inner side of the clamping section 510, and the light-transmitting member 410 is embedded in the installation groove 520 to be in sealing cooperation with the sealing member 500.

[0050] The sealing cooperation means that the light-transmitting member 410 is in sealing cooperation with at least one inner wall of the installation groove 520, such as the bottom wall, side wall or top wall of the installation groove 520, to prevent the water vapor in the cooking cavity from passing through the light-transmitting member 410 and contacting the infrared temperature measurement probe 420.

[0051] Optionally, referring to Figure 3 and Figure 5 , the light-transmitting member 410 is a circular member, and the installation groove 520 is an annular installation groove. Of course, the light-transmitting member 410 can also be oval, rectangular, triangular, etc., which are not specifically limited herein, and the shape of the installation groove 520 is adapted to the light-transmitting member 410.

[0052] Optionally, the diameter or width of the installation groove 520 is slightly smaller than the diameter or width of the light-transmitting member 410, so that the light-transmitting member 410 can fit more closely with the installation groove 520 and improve the sealing effect.

[0053] Preferably, referring to Figure 4 and Figure 5 , the clamping section 510 includes an upper edge 511 and a lower edge 512, the installation groove 520 is formed between the upper edge 511 and the lower edge 512, and a second light-transmitting hole 530 is provided on the lower edge 512. The second light-transmitting hole 530 is in the shape of a horn with a larger bottom and a smaller top. The light-transmitting member 410 can be in sealing contact only with the upper edge 511 and the lower edge 512, or can be in sealing contact with the upper edge 511, the lower edge 512 and the side wall of the installation groove 520, which is not limited herein.

[0054] The installation groove 520 is formed by the upper edge 511 and the lower edge 512 to clamp the light-transmitting member 410, which can make the installation and sealing of the light-transmitting member 410 more reliable. At the same time, the trumpet-shaped second light-transmitting hole 530 can reduce the light shielding of the lower edge 512 and thus increase the light input, making more light within the detection range of the infrared temperature measurement probe 420 converge towards the light-transmitting member 410, achieving good signal detection and reception by the infrared temperature measurement probe 420, and further improving the accuracy of temperature measurement.

[0055] It can be understood that the second light-transmitting hole 530 can also be a vertical hole, that is, the diameters of the upper and lower ends of the second light-transmitting hole are basically the same, or in other forms such as smaller at the top and larger at the bottom. Those skilled in the art can choose according to the actual situation.

[0056] The present invention does not specifically limit the installation groove 520, and it can also be in other forms. For example, referring to Figure 8 , the clamping section 510 is a sunken structure, the installation groove 520 is a groove with an open upper end, and the light-transmitting member 410 is integrally or partially embedded in the installation groove 520 and is in sealing cooperation with the sealing member 500.

[0057] Of course, the installation groove 520 may not be provided on the clamping section 510. For example, the inside of the clamping section 510 is in the form of a through hole, and the peripheral wall of the light-transmitting member 410 is in interference fit with the inner wall of the clamping section and abuts for sealing. Optionally, the through hole can be a vertical hole with the same upper and lower dimensions, that is, the hole wall of the through hole does not form a limit on the upper and lower walls of the light-transmitting member 410, and the through hole can also be a hole that is larger at the top and smaller at the bottom or smaller at the top and larger at the bottom to form a certain limit on the light-transmitting member 410.

[0058] In some alternative embodiments of the present invention, the light-transmitting member 410 can also be located above the sealing member 500 and abut against the sealing member 500.

[0059] Specifically, similar to Figure 8 , the projection of the light-transmitting member 410 on the horizontal plane covers the projection of the sealing member 500 on the horizontal plane, and the sealing member 500 is entirely located below the light-transmitting member 410. In this way, the infrared temperature measurement probe can also be isolated from the environment in the cooking cavity, and the sealing of the cavity below the light-transmitting member and the stability of the air pressure in the cavity can be ensured, improving the temperature measurement accuracy and service life of the infrared temperature measurement device.

[0060] In some embodiments of the present invention, referring to Figure 2 , Figure 4 , Figure 7 and Figure 8, an installation hole 130 for installing the seal 500 is provided on the lining cover 120, and at least a part of the seal 500 is located between the inner wall of the installation hole 130 and the light-transmitting member 300. In other words, the inner wall of the installation hole 130 and the light-transmitting member 410 clamp at least a part of the seal 500.

[0061] Such a setting enables the light-transmitting member 410 to fit with the inner wall of the installation hole 130 by utilizing the flexible characteristics of the seal 500. While protecting the light-transmitting member 410, the installation hole 130 can also form a good limit for the light-transmitting member 410, thereby making the installation of the light-transmitting member 410 more stable, avoiding problems such as displacement and falling off due to vibration, collision, etc., ensuring that the light-transmitting member 410 can function stably, and the abutment of the light-transmitting member 410 also enables the seal 500 to have a better sealing effect, thereby better avoiding the entry of water vapor in the cooking cavity into the lining cover 120 and causing damage to electronic components, and ensuring the sealing of the cavity below the light-transmitting member 300 and the stability of the air pressure in the cavity, improving the temperature measurement accuracy.

[0062] In a specific embodiment, referring to Figure 2 , Figure 4 and Figure 6 , the lower end of the installation hole 130 has an enlarged diameter section, the clamping section 510 is accommodated in the enlarged diameter section, the upper wall of the clamping section 510 (i.e., the outer wall of the upper edge 511) abuts against the top wall of the enlarged diameter section, and the outer side wall of the clamping section 510 abuts against the inner wall of the enlarged diameter section. Such a setting can, on the one hand, form a buffer for the light-transmitting member 410 by means of the upper edge 511, reduce the probability of damage to the light-transmitting member 410 caused by collision during assembly or use, improve the service life of the light-transmitting member 410, and ensure that the light-transmitting member 410 can function stably. On the other hand, it also increases the contact area between the seal 500 and the installation hole 130, thereby forming a better sealing effect. It can be understood that the enlarged diameter section may not be provided separately. For example, both the seal 500 and the installation hole 130 are in a form with substantially equal upper and lower dimensions, and the peripheral wall of the light-transmitting member 410 abuts and seals with the inner wall of the clamping section and clamps the inner wall of this section with the inner wall of the installation hole 130.

[0063] Preferably, the height of the lower surface of the light-transmitting member 410 in the vertical direction is not lower than the lower surface of the lining cover 120, such as the lower surface of the light-transmitting member 410 is flush with the lower surface of the lining cover 120 or higher than the lower surface of the lining cover 120 to form a depression, etc., to reduce the probability of collision of the inner cover, etc. with the light-transmitting member 410 during assembly or use and improve the service life of the light-transmitting member 410.

[0064] In a specific embodiment, referring to Figure 8, a flange extends inwardly at the lower end of the mounting hole 130, and the sealing member 500 is provided with a stepped portion that mates with the flange. The stepped portion has a horizontal segment that abuts against the upper surface of the flange, and the vertical segment of the stepped portion is located between the inner wall of the mounting hole 130 and the peripheral wall of the light-transmitting member 300.

[0065] Preferably, the sealing member 500 is made of a flexible material such as rubber or silica gel, so as to more effectively form a seal while facilitating the assembly and replacement of the light-transmitting member 410.

[0066] In some embodiments of the present invention, referring to Figure 2 , Figure 4 , Figure 7 and Figure 8 , the light-transmitting member 410 is disposed within the sealing member 500, and the infrared temperature measurement probe 420 is disposed above the light-transmitting member 410 and at least partially extends into the sealing member 500.

[0067] When the infrared temperature measurement device is applied to a cooking appliance, there are many interference factors. By at least partially extending the infrared temperature measurement probe 420 into the sealing member 500, the sealing member 500 can have a certain heat insulation effect on the infrared temperature measurement probe 420, reducing the influence of the surrounding environment on the infrared temperature measurement probe 420, thereby further improving the temperature measurement accuracy and service life of the infrared temperature measurement device 400;

[0068] In a specific embodiment, referring to Figure 2 and Figure 4 , the infrared temperature measurement device 400 further includes a fixing plate 430 for fixing the infrared temperature measurement probe 420. The upper end of the sealing member 500 is provided with an outwardly turned edge 550. The fixing plate 430 is fixed to the lining cover 120 and clamps the outwardly turned edge 550 with the lining cover 120.

[0069] With this arrangement, on the basis of the cooperation between the light-transmitting member 410 and the sealing member 500, the upper part of the sealing member 500 is sealed, and further, the infrared temperature measurement probe 420 can be in a closed environment with a simple structure, reducing the interference of the external environment on the infrared temperature measurement probe 420, and further ensuring the sealing of the cavity and the stability of the air pressure in the cavity, so that the infrared temperature measurement device 400 can more accurately reflect the temperature information in the cooking cavity 600 and improve the temperature control accuracy of the cooking appliance.

[0070] Preferably, referring to Figure 4 , there is a gap between the portion of the infrared temperature measurement probe 420 located in the sealing member 500 and the inner wall of the sealing member 500, so as to further enhance the heat insulation effect of the sealing member 500 on the infrared temperature measurement probe 420 and reduce the influence of the surrounding environment on the infrared temperature measurement probe 420.

[0071] Optionally, referring toFigure 1 , Figure 2 and Figure 6 , the pot lid 100 includes a face lid 110 and a lining lid 120 located inside the face lid 110. There is a gap between the face lid 110 and the lining lid 120. An installation hole 130 for installing a seal 500 is provided on the lining lid 120. Fixing posts 150 are provided on the outer periphery of the installation hole 130. The peripheral wall of the installation hole 130 and the fixing posts 150 extend upward a certain distance within this gap. The height of the fixing posts 150 is higher than the upper edge of the installation hole 130. A through hole is provided on the fixing plate 430. When a fastener passes through the through hole and cooperates with the fixing posts 150, the lower surface of the fixing plate 430 clamps the turned-out edge 550 with the upper edge of the installation hole 130. Of course, the fixing plate 430 can also be fixed to the lining lid 120 by other means such as gluing, which is not limited herein.

[0072] Furthermore, referring to Figure 5 , a ring-shaped sealing rib 551 is provided on the turned-out edge 550. When assembling the fixing plate 430, the sealing rib 551 first contacts the lower surface of the fixing plate 430 and deforms, thereby forming a tighter seal between the fixing plate 530 and the turned-out edge 550.

[0073] Of course, in some alternative embodiments of the present invention, a second seal can also be provided. The second seal is independently provided from the seal 500 used to form the cavity 700 and is only used to seal the installation gap between the fixing plate 430 and the lining lid 120.

[0074] In some embodiments of the present invention, referring to Figure 1 , Figure 2 , Figure 5 and Figure 6 , an installation hole 130 for installing the seal 500 is provided on the lining lid 120. A first insertion part is provided on the outer peripheral side of the seal 500, and a second insertion part is provided on the outer periphery of the installation hole 130. The first insertion part and the second insertion part are in insertion fit.

[0075] The present invention does not make specific limitations on the forms of the first insertion part and the second insertion part. Exemplarily, in a specific embodiment, referring to Figure 5 and Figure 6, the upper end of the seal 500 is provided with an outward-turned edge 550, and the outward-turned edge 550 is provided with a ring edge 560 extending downward. A plug-in groove is formed between the ring edge 560 and the seal body. An annular protrusion 140 is provided on the outer periphery of the mounting hole 130. The plug-in groove constitutes the first plug-in portion, and the annular protrusion 140 constitutes the second plug-in portion. The annular protrusion 140 extends into the plug-in groove to achieve the plug-in fit between the two; in another specific embodiment, the outward-turned edge 550 is provided with a ring edge 560 extending downward, and an annular slot is provided on the outer periphery of the mounting hole 130. The ring edge 560 constitutes the first plug-in portion, and the annular slot constitutes the second plug-in portion. The ring edge 560 extends into the annular slot to achieve the plug-in fit between the two.

[0076] Of course, the seal 500 can also be fixed in other ways, such as being clamped by the aforementioned fixing plate and the lining cover, being fixed by gluing, etc., which will not be listed one by one here. Those skilled in the art can choose according to the actual situation.

[0077] In some embodiments of the present invention, referring to Figure 1 , Figure 2 and Figure 3 , the light-transmitting hole 300 is provided in the middle of the inner cover 200, and the infrared temperature measurement probe 420, the light-transmitting member 410 and the light-transmitting hole 300 are coaxially arranged.

[0078] It can be understood that the inner cover 200 is arranged corresponding to the pot liner 610, and the middle of the inner cover 200 corresponds to the middle of the pot liner 610 and the cooking cavity 600. Such an arrangement can optimize the temperature measurement environment of the infrared temperature measurement device 400 on the one hand, reduce the interference of the heat of the pot liner on the infrared temperature measurement device 400, and on the other hand, enable more food in the cooking cavity to be within the detection range of the infrared temperature measurement probe 420, thereby further improving the temperature measurement accuracy.

[0079] Optionally, in some alternative embodiments of the present invention, a second temperature measurement device is provided on the pot body. The second temperature measurement device can be an infrared temperature measurement device or an NTC temperature measurement device using a thermistor as a temperature sensor. The second temperature measurement device measures the outer surface of the pot liner to supplement the infrared temperature measurement device 400, so as to obtain a more accurate temperature level according to the temperature measurement results at different positions, realize more accurate temperature control, and can continue to measure temperature when the infrared temperature measurement device 400 fails to complete the cooking process, improving the user experience.

[0080] Furthermore, the second temperature measurement device corresponds to the center of the bottom of the pot liner 610. In this way, a certain gap can be left in the middle of heating elements such as the coil disc or the heating plate, so that the boiling degree in the middle of the cooking cavity is slightly lower than that in the outer periphery, reducing the interference of water vapor, bubbles, etc. on the infrared temperature measurement device 400, and improving the temperature measurement accuracy and service life of the infrared temperature measurement device.

[0081] In some embodiments of the present invention, a decorative lamp is provided on one side of the pot lid 100 facing the cooking cavity 600, and the decorative lamp is located on the outer periphery of the light-transmitting hole 300 and is arranged at intervals around the light-transmitting hole 300.

[0082] The present invention does not specifically limit the form of the decorative lamp. Exemplarily, in a specific embodiment, the decorative lamp is only an LED lamp for decoration, such as a running horse lamp, a breathing lamp, etc., so as to make the position of the infrared temperature measuring device 400 more prominent, improve the grade and sense of technology of the product, and enhance the market competitiveness of the product; in another specific embodiment, the decorative lamp also has a prompting effect, such as the decorative lamp flashing at a specific frequency or emitting light of a specific extension, etc., to prompt the user when the infrared temperature measuring device 400 fails.

[0083] The decorative lamp can be arranged corresponding to the infrared temperature measuring device. For example, the decorative lamp and the infrared temperature measuring probe are arranged on the same fixing plate. Preferably, the decorative lamp is arranged in a dislocation manner with the light-transmitting member 410 to reduce interference with the infrared temperature measuring device. Of course, the decorative lamp can also be independent of the infrared temperature measuring device and be controlled separately, and those skilled in the art can make a choice according to the actual situation.

[0084] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A cooking appliance with accurate temperature measurement, comprising a pot body with a cooking cavity and a pot lid covering the pot body. The pot lid includes a lining lid and an inner lid located inside the lining lid. It is characterized in that an infrared temperature measurement device and a seal are provided on the lining lid. The infrared temperature measurement device includes a light-transmitting member and an infrared temperature measurement probe. The infrared temperature measurement probe is fixed on the lining lid. The light-transmitting member is arranged corresponding to the infrared temperature measurement probe. A light-transmitting hole is provided on the inner lid corresponding to the light-transmitting member. At least part of the seal is arranged between the light-transmitting member and the light-transmitting hole, so as to form a cavity with relatively stable air pressure below the light-transmitting member.

2. The cooking appliance with accurate temperature measurement according to claim 1, wherein The seal includes a sealing section located between the light-transmitting hole and the light-transmitting member. The sealing section is hollow. The lower end of the sealing section abuts against the outer periphery of the light-transmitting hole. The sealing section, the light-transmitting member and the inner lid enclose the cavity. Or, the lower end of the sealing section abuts against the inner periphery of the light-transmitting hole. The sealing section and the light-transmitting member enclose the cavity.

3. The cooking appliance with accurate temperature measurement according to claim 1, characterized in that The seal further includes a clamping section. At least part of the clamping section wraps the light-transmitting member. Or, the light-transmitting member is located above the seal and abuts against the seal.

4. The cooking appliance with accurate temperature measurement according to claim 3, wherein An installation groove is provided on the inner side of the clamping section. The light-transmitting member is embedded in the installation groove to be in sealing cooperation with the seal. Or, the peripheral wall of the light-transmitting member abuts against the inner wall of the clamping section for sealing.

5. The cooking appliance with accurate temperature measurement according to claim 4, characterized in that, The clamping section includes an upper edge and a lower edge. The installation groove is formed between the upper edge and the lower edge. A second light-transmitting hole is provided on the lower edge. The second light-transmitting hole is in the shape of a trumpet with a larger lower part and a smaller upper part. Or, the second light-transmitting hole is a vertical hole.

6. The cooking appliance with accurate temperature measurement according to claim 1, characterized in that, An installation hole for installing the seal is provided on the lining lid. At least part of the seal is located between the inner wall of the installation hole and the light-transmitting member.

7. The cooking appliance with accurate temperature measurement according to claim 1, characterized in that, The light-transmitting member is arranged inside the seal. The infrared temperature measurement probe is arranged above the light-transmitting member and at least part of it extends into the seal.

8. The cooking appliance with accurate temperature measurement according to claim 7, characterized in that, The infrared temperature measurement device further includes a fixing plate for fixing the infrared temperature measurement probe. The upper end of the seal is provided with an outward-turned edge. The fixing plate is fixed on the lining lid and clamps the outward-turned edge with the lining lid.

9. The cooking appliance with accurate temperature measurement according to claim 1, characterized in that, An installation hole for installing the seal is provided on the lining lid. A first plug-in part is provided on the outer peripheral side of the seal. A second plug-in part is provided on the outer periphery of the installation hole. The first plug-in part is in plug-in cooperation with the second plug-in part.

10. The cooking appliance with accurate temperature measurement according to claim 1, characterized in that, A decorative lamp is provided on one side of the pot lid facing the cooking cavity. The decorative lamp is located on the outer periphery of the light-transmitting hole and is arranged at intervals around the light-transmitting hole.

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