Cover body assembly, cooking utensil, control method and electronic equipment

Abstract

The invention relates to the field of electric cookers, and discloses a cover body assembly, a cooking utensil, a control method and electronic equipment, the cover body assembly comprises a cover body and a heat preservation layer, the cover body is provided with a control module and a trigger switch electrically connected with the control module, and the heat preservation layer is detachably connected to the cover body; a trigger structure matched with the trigger switch for use is arranged on the heat preservation layer, the trigger switch is triggered by the trigger structure when the heat preservation layer is connected to the cover body, the trigger switch is not triggered when the heat preservation layer is not connected to the cover body, and the control module is used for executing a corresponding cooking program according to whether the trigger switch is triggered or not. When the heat preservation layer is installed on the cover body, the taste difference of rice on the upper layer and the lower layer in the cooking utensil in the heat preservation stage can be reduced, when the heat preservation layer is not installed on the cover body, the cooking utensil can skip the heat preservation mode and automatically stop heating after cooking is finished, and therefore the energy efficiency of automatically adding the heat preservation mode compared with a traditional electric cooker is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of rice cookers, and particularly to a lid assembly, a cooking appliance, a control method and an electronic device. Background Art

[0002] In the related technical field of cooking appliances, such as rice cookers, the main cooking stages include a soaking stage, a heating stage, a first boiling stage, and a simmering stage. When a user uses the product, most rice cookers automatically switch to the keep-warm mode after cooking. In the keep-warm stage, the heating plate or heating wire works intermittently through the temperature control system to provide heat for the inner pot and maintain the set keep-warm temperature. During this process, since the temperature of the keep-warm cover dissipates heat quickly, the hot air of the rice rises to the keep-warm cover to form condensed water, which drips onto the rice and affects the taste of the rice; moreover, due to the temperature gradient, the upper and lower layers of rice in the inner pot will have different taste problems, and some users do not want the keep-warm mode, but the rice cooker automatically switches to the keep-warm mode, resulting in an increase in energy consumption. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the technical problems that the temperature of the keep-warm cover dissipates heat quickly, resulting in the hot air of the rice rising to the keep-warm cover to form condensed water, which drips onto the rice and affects the taste of the rice; moreover, due to the temperature gradient, the upper and lower layers of rice in the inner pot will have different taste problems, and some users do not want the keep-warm mode, but the rice cooker automatically switches to the keep-warm mode, resulting in an increase in energy consumption. For this purpose, a lid assembly, a cooking appliance, a control method and an electronic device are provided.

[0004] The present invention aims to provide a lid assembly for a cooking appliance, including: A lid, on which a trigger switch electrically connected to a control module is provided, and the control module is configured to execute a corresponding cooking program according to whether the trigger switch is triggered; A heat preservation layer detachably connected to the lid, and a trigger structure cooperating with the trigger switch is provided on the heat preservation layer; Wherein, in a state where the heat preservation layer is connected to the lid, the trigger switch is triggered by the trigger structure; In a state where the heat preservation layer is not connected to the lid, the trigger switch is not triggered.

[0005] In some embodiments, the heat preservation layer has a cavity; The heat preservation layer includes a temperature regulation medium disposed in the cavity, and the temperature regulation medium stores and releases heat energy by absorbing or releasing the heat generated during the cooking process of the cooking appliance.

[0006] In some embodiments, the temperature regulation medium is a phase change material; There is a reserved space between the temperature control medium and the cavity, and the reserved space is used to accommodate the volume increment of the temperature control medium caused by absorbing the heat generated by the cooking appliance during the cooking process.

[0007] In some embodiments, connection protrusions are provided on the outer peripheral wall of the heat insulation layer; Connection grooves are provided on the inner peripheral wall of the cover body; The connection protrusions are in snap-fit connection with the connection grooves, so that the heat insulation layer is detachably connected to the cover body.

[0008] In some embodiments, a plurality of connection protrusions are provided, a plurality of connection grooves are provided, and the plurality of connection grooves correspond to the plurality of connection protrusions one by one.

[0009] In some embodiments, the connection groove has an insertion port, an entry position, and a snap-fit position; Wherein, the insertion port is opposite to and communicates with the entry position, the entry position communicates with the snap-fit position, and the snap-fit position is staggered from the insertion port; The connection protrusion is designed to be insertable through the insertion port, enter the entry position, and rotate and snap into the snap-fit position; The trigger structure is designed to trigger the trigger switch when the connection protrusion rotates and snaps into the snap-fit position.

[0010] In some embodiments, a cooking appliance is provided, including: A main body; The above-mentioned cover body assembly, and the cover body assembly is used to seal the food ingredient feeding port of the main body.

[0011] In some embodiments, a control method for a cooking appliance is provided, which is used to control the above-mentioned cooking appliance; the control method includes: Determine whether the trigger switch is triggered; Execute corresponding cooking programs according to whether the trigger switch is triggered.

[0012] In some embodiments, the step of executing corresponding cooking programs according to whether the trigger switch is triggered includes: If a trigger signal of the trigger switch is obtained, control the cooking appliance to execute a cooking program with a heat preservation mode; If a trigger signal of the trigger switch is not obtained, control the cooking appliance to execute a cooking program without a heat preservation mode.

[0013] In some embodiments, the heat-insulating layer has a cavity; the heat-insulating layer includes a temperature control medium disposed in the cavity, and the temperature control medium absorbs or releases the heat generated by the cooking appliance during cooking to achieve heat energy storage and release. The cooking program with a heat preservation mode includes: a first boiling stage, a simmering stage, and a heat preservation stage. In the first boiling stage, control the working power of the cooking appliance to be P1, and the temperature control medium absorbs heat to achieve heat energy storage; and / or, In the simmering stage, control the working power of the cooking appliance to be P2, and the temperature control medium releases heat to achieve heat energy release; and / or, In the heat preservation stage, control the working power of the cooking appliance to be P3, and the temperature control medium releases heat to achieve heat energy release.

[0014] In some embodiments, the cooking program without a heat preservation mode includes: a second boiling stage, and the cooking sequence of the second boiling stage in the cooking program is the same as that of the first boiling stage. In the second boiling stage, control the working power of the cooking appliance to be P4. Wherein, (P1 - P4) × t ≤ Q. t is the duration for the temperature control medium (302) to absorb the heat generated by the cooking appliance during cooking. Q is the heat absorbed by the temperature control medium (302) from the cooking appliance during cooking.

[0015] In some embodiments, an electronic device is provided, and the electronic device includes: A memory for storing computer instructions. A processor for calling and executing the computer instructions to implement the control method of the above cooking appliance.

[0016] The solution provided by the present invention has the following beneficial effects compared with the prior art: By providing the heat-insulating layer in the lid body in this embodiment, the user can connect or disassemble the heat-insulating layer and the lid body according to whether heat preservation is needed, so that the cooking appliance can automatically select whether to add a heat preservation mode in the cooking program according to the state of the trigger switch, which can not only reduce the taste difference of the upper and lower layers of rice in the cooking appliance during the heat preservation stage, but also improve the energy efficiency of the cooking appliance during the simmering stage and the heat preservation stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not unduly limit the present invention. Obviously, the accompanying drawings in the following description are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the accompanying drawings: Figure 1 is a schematic structural diagram of the cover assembly shown in the embodiment of the present invention; Figure 2 is a cross-sectional view of the cover assembly (the trigger switch is triggered by the trigger structure) shown in the embodiment of the present invention; Figure 3 is a cross-sectional view of the cover assembly (the trigger switch is not triggered by the trigger structure) shown in the embodiment of the present invention; Figure 4 is a schematic diagram of the cover assembly (in the state where the heat insulation layer is connected to the cover) shown in the embodiment of the present invention; Figure 5 is a schematic diagram of the cover assembly (in the state where the heat insulation layer is not connected to the cover) shown in the embodiment of the present invention; Figure 6 is a schematic structural diagram of the cover shown in the embodiment of the present invention; Figure 7 is a schematic diagram of the heat insulation layer shown in the embodiment of the present invention; Figure 8 is a bottom view of the cover shown in the embodiment of the present invention; Figure 9 is a schematic structural diagram of the cover shown in the embodiment of the present invention; Figure 10 is a side view of the heat insulation layer shown in the embodiment of the present invention; Figure 11 is a schematic diagram of the connection between the heat insulation layer and a partial cover shown in the embodiment of the present invention; Figure 12 is Figure 11 an enlarged schematic diagram of part A; Figure 13 is one of the flowcharts of the control method shown in the embodiment of the present invention; Figure 14 is another flowchart of the control method shown in the embodiment of the present invention; Figure 15 is yet another flowchart of the control method shown in the embodiment of the present invention; Figure 16 is the fourth flowchart of the control method shown in the embodiment of the present invention.

[0018] In the figure: 1 - lid body, 101 - connecting groove, 1011 - insertion opening, 1012 - entry position, 1013 - clamping position, 2 - trigger switch, 3 - thermal insulation layer, 3011 - cavity, 302 - temperature control medium, 303 - connecting protrusion, 4 - trigger structure.

[0019] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 therefore should not be construed as a limitation of the present invention.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "contacted", "communicated" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. 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.

[0022] For a rice cooker, its main cooking stages include a soaking stage, a heating-up stage, a first boiling stage, and a simmering stage. When a user uses the product, most rice cookers automatically jump to the warming mode after cooking. In the warming stage, the heating plate or heating wire works intermittently through the temperature control system to provide heat for the inner pot and maintain the set warming temperature. During this process, since the warming cover plate dissipates heat quickly, the steam of the rice rises to the warming cover plate to form condensed water, which drips onto the rice and affects the taste of the rice; moreover, due to the temperature gradient, the upper and lower layers of the rice in the inner pot will have different taste problems, and some users do not want the warming mode, but the rice cooker automatically jumps to the warming mode, resulting in an increase in energy consumption.

[0023] Based on this, the following embodiments are proposed: Embodiment 1 As Figures 1-6 shown in FIGS., 10, and 11, this embodiment provides a lid assembly for a cooking appliance, including: A lid body 1, on which a trigger switch 2 electrically connected to a control module is provided, and the control module is used to execute corresponding cooking programs according to whether the trigger switch is triggered; The heat insulation layer 3 is detachably connected to the lid body 1, and a triggering structure 4 cooperating with the trigger switch is arranged on the heat insulation layer 3; Wherein, in the state where the heat insulation layer 3 is connected to the lid body 1, the trigger switch 2 is triggered by the triggering structure 4; In the state where the heat insulation layer 3 is not connected to the lid body 1, the trigger switch 2 is not triggered.

[0024] In this embodiment, the lid body 1 assembly is applied to cooking appliances such as rice cookers. Taking a rice cooker as an example here, and the cooked food is taken as rice. The lid body 1 assembly includes a lid body 1 and a heat insulation layer 3. A control module and a trigger switch 2 are arranged on the lid body 1. The trigger switch 2 is electrically connected to the control module. The cooking appliance can select a corresponding operation mode according to whether the trigger switch 2 is triggered. The heat insulation layer 3 is installed on the lid body 1 and is detachably connected to the lid body 1. A triggering structure 4 is arranged on the heat insulation layer 3. The triggering structure 4 can cooperate with the trigger switch 2 to trigger the trigger switch 2.

[0025] Preferably, the trigger switch 2 is a mechanical contact, and the triggering structure 4 is a mechanical protrusion. When the mechanical protrusion contacts the mechanical contact, the trigger switch 2 is triggered. The cooking appliance judges whether the user needs to enter the heat preservation mode according to whether the trigger switch 2 is triggered, so as to match a cooking curve with or without a heat preservation mode according to the user's needs, and execute a cooking program according to the matched cooking curve.

[0026] When the user needs the cooking appliance to keep the rice warm after cooking, the heat insulation layer 3 can be connected to the lid body 1. The triggering structure 4 contacts the trigger switch 2 and forms a matching state. At this time, the trigger switch 2 is triggered. After the control module receives the signal that the trigger switch 2 is triggered, it will automatically add a heat preservation mode to the cooking program executed later. In the heat preservation mode, the heat insulation layer 3 in this embodiment will absorb heat during the previous cooking process, and the heat absorbed by the heat insulation layer 3 in the early stage comes not only from the electric energy of the cooking appliance, but also from the evaporation of water vapor. Therefore, in the state where the lid body assembly has the heat insulation layer 3 in this embodiment, compared with the heat preservation mode of traditional cooking appliances, it also has an energy-saving effect. When the cooking appliance enters the heat preservation stage, the heat insulation layer 3 releases heat at the upper part in the cooking appliance, so that a large temperature difference will not be formed between the upper and lower parts in the cooking appliance, thereby reducing the probability that the condensed water droplets formed on the heat insulation layer 3 drip onto the rice, so as to improve the taste of the rice in the cooking appliance in the heat preservation mode.

[0027] When the user does not need the cooking appliance to keep the rice warm after cooking, the insulation layer 3 can be detached from the lid 1, and the triggering structure 4 will not cooperate with the trigger switch 2. At this time, since the trigger switch 2 is not triggered, the control module will not receive the triggered signal of the trigger switch 2. Therefore, the control module will not add the warming mode in the subsequent cooking program. In the non-warming mode, the cooking appliance in this embodiment will skip the warming mode and automatically stop heating after cooking, and will no longer perform additional warming operations on the rice, thereby reducing the energy efficiency compared with the traditional rice cooker that automatically adds the warming mode.

[0028] By providing the insulation layer in this embodiment on the lid, the user can connect or detach the insulation layer from the lid according to whether insulation is needed, enabling the cooking appliance to automatically select whether to add the warming mode in the cooking program according to the state of the trigger switch. When the insulation layer is installed on the lid, it can reduce the difference in the taste of the upper and lower layers of rice in the cooking appliance during the warming stage. When the insulation layer is not installed on the lid, the cooking appliance will skip the warming mode and automatically stop heating after cooking, thereby reducing the energy efficiency compared with the traditional rice cooker that automatically adds the warming mode.

[0029] Optionally, as Figure 1 and 2 shown, in one implementation of this embodiment, a cavity 3011 is formed in the insulation layer 3; The insulation layer 3 includes a temperature control medium 302. The temperature control medium 302 is disposed in the cavity 3011. The temperature control medium 302 stores and releases heat energy by absorbing or releasing the heat generated by the cooking appliance during cooking.

[0030] In this embodiment, the insulation layer 3 has a temperature control medium 302. The insulation layer 3 is made of a material that is resistant to high temperatures and does not react with the temperature control medium 302. The temperature control medium 302 can change its own state according to different external environmental temperatures. A cavity 3011 structure is formed inside the insulation layer 3. The cavity 3011 is located on the side of the insulation layer 3 close to the lid 1. The temperature control medium 302 is disposed in the cavity 3011 and can exchange heat with the insulation layer 3. After the temperature control medium 302 is placed in the cavity 3011 of the insulation layer 3, the cavity 3011 can be sealed by welding or buckling according to the material of the insulation layer 3. A sealing ring is also provided on the insulation layer 3. The sealing ring is used to seal between the insulation layer 3 and the inner wall of the cooking appliance.

[0031] Preferably, the heat-insulating layer 3 is a circular structure that fits the shape of the lid 1. When devices such as a temperature sensor package and a steam valve are included on the lid 1 of the cooking appliance, openings are made at corresponding positions on the temperature-regulating medium to reserve the structural positions of the above devices, and the remaining structure satisfies the tight fit between the heat-insulating cover plate and the phase-change material container.

[0032] Preferably, if a steam valve device is provided on the lid 1 of the cooking appliance, a notch corresponding to the steam valve device is formed in the temperature-regulating medium 302, so that the temperature-regulating medium 302 avoids the steam valve device and ensures the normal operation of the steam valve device.

[0033] When the cooking appliance is working, the temperature inside the cooking appliance is relatively high. The temperature-regulating medium 302 can absorb the heat generated during the cooking process of the cooking appliance through heat exchange with the heat-insulating layer 3 and store the thermal energy. At this time, the heat-insulating layer 3 can transfer heat to the temperature-regulating medium 302 by direct contact or thermal radiation. When the cooking appliance finishes cooking and stops heating, the temperature inside the cooking appliance gradually decreases. Since the heating part of most cooking appliances is located at the lower part, the temperature in the upper part of the cooking appliance will decrease more. At this time, the temperature-regulating medium 302 can be used as another heat source to heat the heat-insulating layer 3 through heat exchange with the heat-insulating layer 3, release the stored thermal energy inside the cooking appliance from the upper part of the cooking appliance, reduce the formation of condensed water on the surface of the heat-insulating layer 3 and the working time of the cooking appliance during the heat preservation stage, extend the heat preservation time and reduce the energy consumption of the cooking appliance, and slow down the heat dissipation rate of the heat-insulating layer 3 and the rice in the upper part of the cooking appliance, thereby reducing the possibility that the upper and lower layers of rice in the cooking appliance are affected by the temperature gradient and will have different tastes, so as to improve the taste of the rice in the cooking appliance in the heat preservation mode.

[0034] By arranging the temperature-regulating medium 302 in the cavity 3011 of the heat-insulating layer 3, the temperature-regulating medium 302 can reduce the temperature difference between the upper and lower parts inside the cooking appliance through heat exchange with the heat-insulating layer 3, reduce the probability that the condensed water droplets formed on the heat-insulating layer 3 drip onto the rice, and reduce the possibility that the upper and lower layers of rice in the cooking appliance are affected by the temperature gradient and will have different tastes. It not only improves the taste of the rice in the cooking appliance in the heat preservation mode, but also can extend the heat preservation time and reduce the energy consumption of the cooking appliance.

[0035] Optionally, as Figure 2 shown, in one implementation manner of this embodiment, the temperature-regulating medium 302 is a phase-change material; There is a reserved space between the temperature-regulating medium 302 and the cavity 3011, and the reserved space is used to accommodate the volume increment of the temperature-regulating medium 302 absorbing the heat generated during the cooking process of the cooking appliance.

[0036] In this embodiment, the temperature control medium 302 is made of a phase change material. The phase change material is usually in a solid state at room temperature. When it continuously absorbs heat and reaches a certain temperature, it will expand and gradually transform into a liquid state. When the same amount of the temperature control medium 302 is in a liquid state, its volume will be larger than that of the same amount of the solid temperature control medium 302. Therefore, a reserved space needs to be set between the temperature control medium 302 and the cavity 3011. This reserved space dilutes the pressure generated during the state change of the phase change material by accommodating the volume increment of the temperature control medium 302 when it absorbs the heat generated during the cooking process of the cooking appliance, preventing the heat insulation layer 3 from deforming, thereby providing sufficient expansion space for the temperature control medium 302 and improving the heat insulation performance of the heat insulation layer 3.

[0037] Preferably, the material of the heat insulation layer 3 is aluminum, the phase change material is an organic phase change material, such as paraffin, and the volume of the phase change material is less than or equal to 90% of the volume of the cavity 3011 of the heat insulation layer 3.

[0038] By setting a reserved space in the cavity 3011, it can accommodate the volume increment of the temperature control medium 302 when it absorbs the heat generated during the cooking process of the cooking appliance, prevent the heat insulation layer 3 from deforming, provide sufficient expansion space for the temperature control medium 302, and improve the heat insulation performance of the heat insulation layer 3.

[0039] Optionally, in one implementation manner of this embodiment, The cooking program with a heat preservation mode includes a first boiling stage, a simmering stage, and a heat preservation stage; In the first boiling stage, the working power of the cooking appliance is P1, and the temperature control medium 302 absorbs heat to achieve heat energy storage; In the simmering stage, the working power of the cooking appliance is P2, and the temperature control medium 302 releases heat to achieve heat energy release; In the heat preservation stage, the working power of the cooking appliance is P3, and the temperature control medium 302 releases heat to achieve heat energy release.

[0040] In this embodiment, the cooking program with a heat preservation mode will respectively go through the first boiling stage, the simmering stage, and the heat preservation stage during operation.

[0041] In the first boiling stage, to quickly raise the water temperature to the boiling point (100°C) and make the rice grains start to absorb water and expand, a relatively high power is required in this stage to accelerate the water temperature rising speed and make the water quickly reach the boiling state. In this stage, a part of the heat generated by the cooking appliance is supplied to the phase change material to raise its temperature. At this time, the working power of the cooking appliance is P1, and the temperature control medium 302 starts to absorb heat and raises its own temperature to store the heat. When the temperature control medium 302 reaches the highest temperature in the first boiling stage, it is in a liquefied state.

[0042] In the simmering stage and the heat preservation stage, it is not necessary to bring the water to a boil. Therefore, the power in these two stages is relatively low, P2 is less than P1, and P3 is less than P1. In the simmering stage and the heat preservation stage, the working powers of the cooking appliance are P2 and P3 respectively. In these two stages, the cooking appliance has reached the highest temperature of the first boiling stage. Since the temperature control medium 302 has reached the highest temperature of the first boiling stage at this time, when the temperature inside the cooking appliance no longer rises, as the temperature inside the cooking appliance decreases, the temperature control medium 302 gradually changes from a liquid state to a solid state and begins to release heat to the inside of the cooking appliance through heat exchange to heat the food, while reducing the temperature difference between the inner and outer surfaces of the lid 1 of the cooking appliance to reduce the formation of condensate on the upper lid. For a cooking appliance equipped with a heat preservation layer, in the simmering stage and the heat preservation stage, the temperature control medium 302 can also act as a heat source to heat the food, enabling the cooking appliance to operate at a lower power in the simmering stage and the heat preservation stage. Therefore, the powers of the cooking appliance in the simmering stage and the heat preservation stage after adding the heat preservation layer are P2 and P3 respectively. Compared with the powers P2' and P3' of the simmering stage and the heat preservation stage of a traditional rice cooker without the heat preservation layer of this embodiment, P2 is less than P2' and P3 is less than P3', achieving an energy-saving effect.

[0043] Preferably, the cooking program with a heat preservation mode further includes a soaking stage and a heating-up stage, and these two stages are before the first boiling stage.

[0044] When the temperature control medium 302 begins to release heat to the inside of the cooking appliance through heat exchange, the cooking appliance operates at a relatively low power. Compared with a traditional rice cooker, the cooking appliance in this embodiment not only improves the good taste of the rice but also saves energy consumption during cooking.

[0045] Optionally, in one implementation manner of this embodiment, The cooking program without a heat preservation mode includes: a second boiling stage; In the second boiling stage, the working power of the cooking appliance is P4; Wherein, (P1 - P4) × t ≤ Q; t is the duration for the temperature control medium 302 to absorb the heat generated by the cooking appliance during the cooking process; Q is the heat absorbed by the temperature control medium 302 from the heat generated by the cooking appliance during the cooking process.

[0046] In this embodiment, when the thermal insulation layer 3 is not connected to the lid 1, the trigger switch 2 on the lid 1 will not be triggered, and at this time, the cooking program executed by the cooking appliance will not have a heat preservation mode. The cooking program without the heat preservation mode includes a second boiling stage. Assume that the working power of the cooking appliance in the second boiling stage is P4, assume that the duration for the temperature control medium 302 to absorb the heat generated by the cooking appliance during the cooking process is t, and assume that the total heat absorbed by the temperature control medium 302 from the cooking appliance during the cooking process is Q. Since this total heat Q does not only come from the direct heat conduction of the cooking appliance to the temperature control medium 302, but also absorbs a part of the heat brought by the steam on the side of the thermal insulation layer 3 close to the lid 1, (P1 - P4) × t represents the energy consumed by the cooking appliance after adding the thermal insulation layer, and Q is the energy absorbed by the temperature control medium 302. Therefore, the equation (P1 - P4) × t ≤ Q is satisfied.

[0047] When the thermal insulation layer is added to the cooking appliance, the temperature control medium 302 in the thermal insulation layer needs to absorb energy in the first boiling stage. During this process, the energy Q absorbed by the temperature control medium 302 does not all come from the heating of the cooking appliance itself, and a part also comes from the heat when the water vapor inside the cooking appliance evaporates. Therefore, (P1 - P4) × t represents the energy consumed by the cooking appliance after adding the thermal insulation layer, and Q is the energy absorbed by the temperature control medium 302. The total heat Q absorbed by the temperature control medium 302 from the cooking appliance during the cooking process is equal to the sum of the heat of the steam participating in heating the rice and the heat directly conducted from the cooking appliance to the temperature control medium 302. So, (P1 - P4) × t ≤ Q, and the heat released by the temperature control medium 302 is greater than the electrical energy consumed for heat absorption in the first boiling stage, thus achieving an energy-saving effect.

[0048] The phase change material absorbs heat and undergoes a phase change when the cooking appliance is heating. The heat absorbed by the phase change material is divided into two stages. The solid phase change material absorbs heat and rises in temperature until it reaches the melting point in the first stage. In the second stage, the phase change material continues to absorb heat after reaching the melting point and changes from solid to liquid. In the first stage, the heat absorbed by the material phase change is Q1 = C·m·△T, and the heat absorbed by the material phase change in the second stage is Q2 = m·L. In the above formulas, C is the specific heat capacity, m is the mass, △T is the temperature difference change, and L is the latent heat. The heat absorbed in these two stages comes from the heat provided by the cooking appliance during the heating stage and the heat transferred from the thermal insulation layer 3 to the phase change material. Therefore, the total heat Q absorbed by the temperature control medium 302 from the cooking appliance during the cooking process is Q < Q1 + Q2.

[0049] Specifically, P1 is the working power of the cooking appliance during the first boiling stage in the heat preservation mode. The temperature control medium 302 can make full use of the heat brought by the steam near the side of the lid 1 and involve it in heating the rice. Therefore, under the action of the temperature control medium 302, the steam in the cooking appliance can be utilized. P4 is the working power of the cooking appliance during the second boiling stage in the non-heat preservation mode. When the cooking is completed, the cooking appliance can automatically skip the heat preservation stage, reducing the running time of the cooking program and the energy consumption of the cooking appliance.

[0050] By setting the second boiling stage of the cooking program of the cooking appliance in the non-heat preservation mode, the cooking appliance operates the second boiling stage at a power lower than that of the first boiling stage in the state without a heat preservation layer, and automatically skips the heat preservation stage when the cooking is completed, reducing the running time of the cooking program, so that the cooking appliance is more energy-saving than a traditional rice cooker when executing the cooking program in the non-heat preservation mode.

[0051] Optionally, as Figure 12 shown, in an implementation manner of this embodiment, connection protrusions 303 are provided on the outer peripheral wall of the heat preservation layer 3; connection grooves 101 are provided on the inner peripheral wall of the lid 1; The connection protrusions 303 are in snap-fit with the connection grooves 101, so that the heat preservation layer 3 is detachably connected to the lid 1.

[0052] In this embodiment, connection protrusions 303 are provided on the outer peripheral wall of the heat preservation layer 3, and connection grooves 101 matching the protrusions are provided on the inner peripheral wall of the lid 1. When the user needs to install the heat preservation layer 3, the connection protrusions 303 on the heat preservation layer 3 can be aligned with the connection grooves 101 on the lid 1 at a specific angle, and then the heat preservation layer 3 is held and rotated by a certain angle to fit and fix it with the lid 1. The connection protrusions 303 are inserted into the connection grooves 101, and the connection protrusions 303 and the connection grooves 101 form a snap-fit, thereby fixing the heat preservation layer 3 on the lid 1; when the heat preservation layer 3 is disassembled, the connection protrusions 303 and the connection grooves 101 are separated, and at this time, the connection between the heat preservation layer 3 and the lid 1 is lost, so as to disassemble the heat preservation layer 3 from the lid 1. In order to prevent the user from rotating excessively, a space structure corresponding to the connection protrusions 303 of the heat preservation layer 3 is reserved on the lid 1, and the rest of the structures on the lid 1 are solid structures, so that the heat preservation layer 3 cannot continue to rotate after rotating into the installation position, and at the same time, it also prevents the user from misoperating and rotating the heat preservation layer 3 in the reverse direction. Through the above structure, the heat preservation layer 3 and the lid 1 are tightly and fixedly connected, which can reduce the risk of the heat preservation layer 3 falling off and moving left and right from the lid 1.

[0053] The snap - fit formed by the connecting protrusion 303 and the connecting groove 101 makes the disassembly and assembly cooperation between the heat - preservation layer 3 and the cover body 1 simpler and more labor - saving. That is, it not only improves the disassembly and assembly speed between the heat - preservation layer 3 and the cover body 1, but also reduces the risk of the heat - preservation layer 3 falling off from the cover body 1 and moving left and right.

[0054] Optionally, as Figure 12 shown, in one implementation of this embodiment, There are multiple connecting protrusions 303 and multiple connecting grooves 101, and the multiple connecting grooves 101 correspond to the multiple connecting protrusions 303 one by one.

[0055] In this embodiment, the number of connecting protrusions 303 is multiple, the number of connecting grooves 101 is the same as that of the connecting protrusions 303, and each connecting protrusion 303 corresponds to a connecting groove 101. The multiple connecting protrusions 303 are evenly distributed on the outer peripheral wall of the heat - preservation layer 3, and the positions of the multiple connecting grooves 101 on the cover body 1 respectively correspond to the multiple connecting protrusions 303. The multiple connecting protrusions 303 enable users to more quickly align with the connecting grooves 101 during the installation of the heat - preservation layer 3, realizing pre - positioning before installation. When the heat - preservation layer 3 and the cover body 1 are completely installed, the multiple connecting protrusions 303 and the multiple grooves can also improve the connection strength between the heat - preservation layer 3 and the cover body 1.

[0056] Preferably, the number of connecting protrusions 303 is 8, which are evenly distributed on the outer peripheral wall of the heat - preservation layer 3, and the number of connecting grooves 101 is also 8, which are respectively arranged corresponding to each connecting protrusion 303 on the cover body 1.

[0057] Through the cooperation between the multiple connecting protrusions 303 and the multiple grooves, it can not only realize the pre - positioning between the heat - preservation layer 3 and the cover body 1 before installation, but also improve the connection strength between the heat - preservation layer 3 and the cover body 1.

[0058] Optionally, as Figure 8 and 9 shown, in one implementation of this embodiment, The connecting groove 101 has an insertion port 1011, an entry position 1012, and a snap - fit position 1013; Among them, the insertion port 1011 is opposite to and communicates with the entry position 1012, the entry position 1012 communicates with the snap - fit position 1013, and the snap - fit position 1013 is staggered with the insertion port 1011; The connecting protrusion 303 is designed to be inserted from the insertion port 1011, enter the entry position 1012, and rotate and snap into the snap - fit position 1013; The triggering structure 4 is designed to trigger the trigger switch 2 when the connecting protrusion 303 rotates and snaps into the snap - fit position.

[0059] In this embodiment, the connecting groove 101 has an insertion opening 1011, an entry position 1012, and a clamping position 1013. The insertion opening 1011 and the entry position 1012 are oppositely arranged and communicate with each other, while the clamping position 1013 and the insertion opening 1011 are staggered. That is to say, after the connecting protrusion 303 enters from the insertion opening 1011, it needs to move towards the clamping position 1013 and pass through the entry position 1012, and finally enter the clamping position 1013.

[0060] Specifically, when the heat insulation layer 3 is connected to the cover body 1, the connecting protrusion 303 is aligned with the connecting groove 101, and the connecting protrusion 303 is inserted from the insertion opening 1011 so that the connecting protrusion 303 moves into the entry position 1012. At this time, the heat insulation layer 3 is rotated and moved so that the connecting protrusion 303 moves towards the clamping position 1013. When the connecting protrusion 303 passes through the entry position 1012 and continues to move until the connecting protrusion 303 completely enters the clamping position 1013 and cannot move further under the limiting action of the clamping position 1013, the clamping cooperation between the connecting protrusion 303 and the connecting groove 101 is completed. When the connecting protrusion 303 rotates and moves, the trigger structure 4 located on the heat insulation layer 3 also moves synchronously. When the connecting protrusion 303 completes the clamping cooperation with the connecting groove 101 by rotation, the trigger structure 4 on the heat insulation layer 3 just touches the trigger switch 2. At this time, the trigger switch 2 is triggered and feeds back a trigger signal to the control module so that the cooking appliance can execute corresponding cooking programs for the trigger state subsequently.

[0061] By designing the trigger structure 4 to trigger the trigger switch 2 when the connecting protrusion 303 rotates and snaps into the clamping position, the cooking appliance can automatically select to execute cooking programs including or not including a heat preservation mode according to different signals of the trigger switch 2.

[0062] Embodiment Two This embodiment provides a cooking appliance, including: A main body; The cover body 1 assembly in Embodiment One, and the cover body assembly is used to cover the food ingredient feeding port of the main body In this embodiment, since the cooking appliance includes the cover body 1 assembly in Embodiment One, the cooking appliance has all the beneficial effects of the cover body 1 assembly in Embodiment One, which will not be elaborated here.

[0063] Embodiment Three This embodiment provides a control method for a cooking appliance, as Figure 13 、 14 shown, for controlling the cooking appliance in Embodiment Two or Embodiment Two, and the control method includes: Determine whether the trigger switch is triggered; Execute corresponding cooking programs according to whether the trigger switch is triggered.

[0064] If a trigger signal of the trigger switch 2 is obtained, control the cooking appliance to execute a cooking program with a heat preservation mode. If a trigger signal of the trigger switch 2 is not obtained, control the cooking appliance to execute a cooking program without a heat preservation mode.

[0065] In this embodiment, this control method is used to control the cooking appliance in Embodiment 2 or Embodiment 3. When the heat preservation layer 3 in Embodiment 1 is installed on the cover body 1, the trigger switch 2 is triggered. After the control module obtains the trigger signal feedback by the trigger switch 2, it starts to control the cooking appliance to execute a cooking program with a heat preservation mode. When the heat preservation layer 3 in Embodiment 1 is not installed on the cover body 1, the trigger switch 2 is not triggered, and the control module will not obtain the trigger signal feedback by the trigger switch 2, and starts to control the cooking appliance to execute a cooking program without a heat preservation mode.

[0066] By detecting the trigger signal of the trigger switch 2 through the control module, the cooking appliance can execute corresponding cooking programs according to the user's needs, avoid executing steps that the user does not need, and thus reduce the energy consumption of the cooking appliance.

[0067] Optionally, as Figure 15 shown, in an implementation manner of this embodiment, When the heat preservation layer 3 has a cavity 3011; the heat preservation layer 3 includes a temperature control medium 302, the temperature control medium 302 is arranged in the cavity 3011, and the temperature control medium 302 realizes heat energy storage and release by absorbing or releasing the heat generated by the cooking appliance during the cooking process, The cooking program with a heat preservation mode includes: a first boiling stage, a simmering stage, and a heat preservation stage; In the first boiling stage, control the working power of the cooking appliance to be P1, and the temperature control medium 302 absorbs heat to realize heat energy storage; and / or, In the simmering stage, control the working power of the cooking appliance to be P2, and the temperature control medium 302 releases heat to realize heat energy release; and / or, In the heat preservation stage, control the working power of the cooking appliance to be P3, and the temperature control medium 302 releases heat to realize heat energy release; and / or.

[0068] In this embodiment, controlling the cooking appliance to execute a cooking program with a heat preservation mode includes a first boiling stage, a simmering stage, and a heat preservation stage.

[0069] During the first boiling stage, to quickly heat the water to the boiling point (100 °C) and make the rice grains start to absorb water and expand, a relatively high power is required to accelerate the rising speed of the water temperature and quickly bring the water to the boiling state. During this stage, part of the heat generated by the cooking appliance is supplied to the phase change material to raise its temperature. At this time, the power of the cooking appliance is P1. The temperature control medium 302 starts to absorb heat and raises its own temperature to store the heat. When the temperature control medium 302 reaches the highest temperature of the first boiling stage, it is in a liquefied state.

[0070] In the simmering stage and the heat preservation stage, it is not necessary to bring the water to a boil. Therefore, the power in these two stages is relatively low, P2 < P1 and P3 < P1. In the simmering stage and the heat preservation stage, the working powers of the cooking appliance are P2 and P3 respectively. At this time, the cooking appliance has reached the highest temperature of the first boiling stage. Since the temperature control medium 302 has reached the highest temperature of the first boiling stage at this time, when the temperature inside the cooking appliance no longer rises, as the temperature inside the cooking appliance drops, the temperature control medium 302 gradually changes from a liquid state to a solid state and begins to release heat to the inside of the cooking appliance through heat exchange to heat the food, while reducing the temperature difference between the inner and outer surfaces of the lid 1 of the cooking appliance to reduce the formation of condensate on the upper lid. For a cooking appliance equipped with a heat preservation layer, during the simmering stage and the heat preservation stage, the temperature control medium 302 can also act as a heat source to heat the food, enabling the cooking appliance to operate at a lower power during the simmering stage and the heat preservation stage. Therefore, the powers of the cooking appliance during the simmering stage and the heat preservation stage after adding the heat preservation layer are P2 and P3 respectively. Compared with the powers P2' and P3' of the simmering stage and the heat preservation stage of a traditional rice cooker without the heat preservation layer of this embodiment, P2 < P2' and P3 < P3', achieving an energy-saving effect.

[0071] Preferably, the cooking program with a heat preservation mode further includes a soaking stage and a heating-up stage, and these two stages are before the first boiling stage.

[0072] When the temperature control medium 302 starts to release heat to the inside of the cooking appliance through heat exchange, the cooking appliance operates at a relatively low power. Compared with a traditional rice cooker, the cooking appliance in this embodiment not only improves the good taste of the rice but also saves energy during cooking.

[0073] In this embodiment, the cooking appliance controls the working power P2 during the simmering stage to be less than the working power P3 during the keeping-warm stage. During the simmering stage, a large amount of steam is generated inside the cooking appliance. The temperature of the steam is relatively high and can continue to heat the rice in turn. When entering the simmering stage, the temperature control medium 302 has also reached the highest temperature in the first boiling stage, so it also releases heat into the cooking appliance to heat the rice. Therefore, the requirement for the working power P2 of the cooking appliance in this stage is relatively low. When the cooking appliance is in the keeping-warm stage, the moisture has been absorbed by the rice, so there is no longer high-temperature steam generated. At this time, after the temperature control medium 302 releases heat during the simmering stage, its own temperature has also decreased. Therefore, the requirement for the working power P3 of the cooking appliance in this stage is relatively high. Therefore, setting the working power of the cooking appliance during the simmering stage to be less than the working power of the cooking appliance during the keeping-warm stage can improve the energy utilization rate of the cooking appliance, thereby further reducing the energy consumption of the cooking appliance.

[0074] By controlling the working power P2 of the cooking appliance during the simmering stage to be less than the working power P3 during the keeping-warm stage, the energy utilization rate of the cooking appliance can be improved, thereby further reducing the energy consumption of the cooking appliance.

[0075] Optionally, as Figure 16 shown, in an implementation manner of this embodiment, the cooking program without the keeping-warm mode includes: a second boiling stage, and the cooking sequence of the second boiling stage in the cooking program is the same as that of the first boiling stage; During the second boiling stage, control the working power of the cooking appliance to be P4; wherein, P1 - P4×t ≤ Q; t is the duration for the temperature control medium 302 to absorb the heat generated by the cooking appliance during the cooking process; Q is the heat absorbed by the temperature control medium 302 from the cooking appliance during the cooking process.

[0076] In this embodiment, the cooking appliance controls its operating power to P4 during the second boiling stage, and P4 satisfies the equation (P1 - P4) × t ≤ Q. When the heat insulation layer 3 is not connected to the lid 1, the trigger switch 2 on the lid 1 will not be triggered, and at this time, the cooking appliance executes the cooking program in the non-insulation mode. The cooking program in the non-insulation mode includes the second boiling stage. Assuming that the operating power of the cooking appliance during the second boiling stage is P4, assuming that the duration for the temperature control medium 302 to absorb the heat generated by the cooking appliance during the cooking process is t, and assuming that the total heat absorbed by the temperature control medium 302 from the heat generated by the cooking appliance during the cooking process is Q, since this total heat Q not only comes from the direct heat conduction of the cooking appliance to the temperature control medium 302, but also absorbs a part of the heat brought by the steam on the side of the heat insulation layer 3 close to the lid 1, so the equation (P1 - P4) × t ≤ Q is satisfied.

[0077] Specifically, P1 is the operating power of the cooking appliance during the first boiling stage in the insulation mode. The temperature control medium 302 can make full use of the heat brought by the steam on the side close to the lid 1 and enable it to participate in the heating of the rice. Therefore, the steam in the cooking appliance can be utilized under the action of the temperature control medium 302. When the cooking appliance is in the non-insulation mode, when the cooking ends, the cooking appliance can automatically skip the insulation stage, reducing the running time of the cooking program and the energy consumption of the cooking appliance.

[0078] Preferably, the cooking program in the non-insulation mode further includes a soaking stage and a heating-up stage, and these two stages are before the second boiling stage.

[0079] By setting the cooking program of the cooking appliance in the non-insulation mode to automatically skip the insulation stage when the cooking ends, the running time of the cooking program is reduced, so that the cooking appliance is more energy-efficient when executing the cooking program in the non-insulation mode compared with traditional rice cookers.

[0080] The cooking sequence of the second boiling stage and the first boiling stage in the cooking program is the same. For example, in the cooking program with the insulation mode, the cooking sequence is the soaking stage, the heating-up stage, and the first boiling stage. In the cooking program in the non-insulation mode, the cooking sequence is the soaking stage, the heating-up stage, and the second boiling stage. That is, the cooking sequence of the second boiling stage and the first boiling stage in the cooking program is the same, and the only difference is that the power of the first boiling stage is P1 and the power of the second boiling stage is P4.

[0081] More specifically, the power of the soaking stage and the power of the heating-up stage in the cooking program with the insulation mode can be respectively set to be equal to the power of the soaking stage and the power of the heating-up stage in the cooking program in the non-insulation mode.

[0082] Embodiment 4 This embodiment provides an electronic device, which includes: A memory for storing computer instructions; A processor for calling and executing the computer instructions to implement the control method of the cooking appliance in Embodiment 3.

[0083] In this embodiment, the electronic device includes a memory and a processor. The memory is used to store computer instructions, and the processor is used to call and execute the computer instructions to implement the control method of the cooking appliance in Embodiment 3. Since this electronic device can execute the control method of the cooking appliance in Embodiment 3, this electronic device has all the beneficial effects of the control method of the cooking appliance in Embodiment 3, which will not be elaborated here.

[0084] In summary, the ingenious concept of the lid assembly and the control method in this application lies in: First, by providing the heat preservation layer in this embodiment on the lid, the user can connect or disassemble the heat preservation layer from the lid according to whether heat preservation is needed, so that the cooking appliance can automatically select whether to add a heat preservation mode in the cooking program according to the state of the trigger switch, which can not only reduce the taste difference of the rice in the upper and lower layers in the cooking appliance during the heat preservation stage, but also improve the energy efficiency of the cooking appliance during the simmering stage and the heat preservation stage.

[0085] Second, by arranging the temperature regulation medium in the cavity of the heat preservation layer, the temperature regulation medium can reduce the temperature difference between the upper and lower parts in the cooking appliance through heat exchange with the heat preservation layer, reducing the probability of the condensed water droplets formed on the heat preservation layer dropping onto the rice, and reducing the possibility that the rice in the upper and lower layers in the cooking appliance will have different tastes due to the influence of the temperature gradient.

[0086] Third, by providing a reserved space in the cavity, it can accommodate the volume increment of the temperature regulation medium when absorbing the heat generated during the cooking process of the cooking appliance, prevent the heat preservation layer from deforming, and provide sufficient expansion space for the temperature regulation medium to improve the heat preservation performance of the heat preservation layer.

[0087] Fourth, by arranging the temperature regulation medium in the heat preservation layer, absorbing energy during the first boiling stage, the energy Q absorbed by the temperature regulation medium does not all come from the heating of the cooking appliance itself, and there is also a part from the heat when the water vapor in the cooking appliance evaporates, (P1 - P4) × t ≤ Q, and the heat released by the temperature regulation medium is greater than the electric energy consumed by it during the first boiling stage of heat absorption, thus achieving an energy-saving effect.

[0088] Fifth, when the cooking appliance executes a cooking program without a heat preservation mode, it automatically skips the heat preservation stage at the end of cooking, reducing the running time of the cooking program, so that the cooking appliance is more energy-saving than a traditional rice cooker when executing a cooking program without a heat preservation mode.

[0089] Sixth, the control module detects the triggered signal of the trigger switch, enabling the cooking appliance to execute corresponding cooking programs according to the user's needs, avoiding performing steps that the user does not need, and thus reducing the energy consumption of the cooking appliance.

[0090] It can be further understood that in the present disclosure, "a plurality of" means two or more, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms of "a", "the", and "said" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0091] It can be further understood that the terms "first", "second", etc. are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not represent a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0092] It can be further understood that although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring these operations to be performed in the specific order shown or in a serial order, or requiring all the operations shown to obtain the desired result. In a specific environment, multitasking and parallel processing may be beneficial.

[0093] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0094] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A cover assembly of a cooking appliance, characterized in that, Comprising: A cover body (1) is provided with a trigger switch (2) electrically connected to a control module, and the control module is configured to execute a corresponding cooking program according to whether the trigger switch is triggered. A heat preservation layer (3) is detachably connected to the cover body (1), and a trigger structure (4) cooperating with the trigger switch is provided on the heat preservation layer (3). Wherein, in a state where the heat preservation layer (3) is connected to the cover body (1), the trigger switch (2) is triggered by the trigger structure (4). In a state where the heat preservation layer (3) is not connected to the cover body (1), the trigger switch (2) is not triggered.

2. The cover body assembly according to claim 1, wherein The heat preservation layer (3) has a cavity (3011). The heat preservation layer (3) includes a temperature control medium (302), and the temperature control medium (302) is disposed in the cavity (3011). The temperature control medium (302) stores and releases thermal energy by absorbing or releasing the heat generated by the cooking appliance during cooking.

3. The cover body assembly according to claim 2, wherein The temperature control medium (302) is a phase change material. A reserved space is provided between the temperature control medium (302) and the cavity (3011), and the reserved space is used to accommodate the volume increment of the temperature control medium (302) caused by absorbing the heat generated by the cooking appliance during cooking.

4. The cover body assembly according to any one of claims 1-3, wherein Connection protrusions (303) are provided on the outer peripheral wall of the heat preservation layer (3). Connection grooves (101) are provided on the inner peripheral wall of the cover body (1). The connection protrusions (303) are in snap-fit connection with the connection grooves (101) so that the heat preservation layer (3) is detachably connected to the cover body (1).

5. The cover body assembly according to claim 4, wherein A plurality of connection protrusions (303) are provided, and a plurality of connection grooves (101) are provided, and the plurality of connection grooves (101) correspond to the plurality of connection protrusions (303) one by one.

6. The cover body assembly according to claim 4, wherein The connection groove (101) has an insertion port (1011), an entry position (1012), and a snap position (1013). Wherein, the insertion port (1011) is opposite to and communicates with the entry position (1012), the entry position (1012) communicates with the snap position (1013), and the snap position (1013) is staggered from the insertion port (1011). The connection protrusion (303) is designed to be inserted through the insertion port (1011), enter the entry position (1012), and be rotated and snapped into the snap position (1013). The trigger structure (4) is designed to trigger the trigger switch (2) when the connection protrusion (303) is rotated and snapped into the snap position (1013).

7. A cooking appliance, characterized in that, Comprising: A main body; The lid assembly according to any one of claims 1-6, wherein the lid assembly is used to cover the food ingredient inlet of the main body.

8. A control method for a cooking appliance, characterized in that, A cooking appliance for controlling the cooking appliance according to claim 7; the control method includes: Determining whether the trigger switch is triggered; Executing a corresponding cooking program according to whether the trigger switch is triggered.

9. The control method of the cooking appliance according to claim 8, wherein, The step of executing a corresponding cooking program according to whether the trigger switch is triggered includes: If a trigger signal of the trigger switch is obtained, controlling the cooking appliance to execute a cooking program with a heat preservation mode; If a trigger signal of the trigger switch is not obtained, controlling the cooking appliance to execute a cooking program without a heat preservation mode.

10. The control method of the cooking appliance according to claim 9, wherein In the heat preservation layer (3) having a cavity (3011); the heat preservation layer (3) includes a temperature control medium (302), the temperature control medium (302) is arranged in the cavity (3011), and the temperature control medium (302) realizes heat energy storage and release by absorbing or releasing the heat generated by the cooking appliance during cooking. The cooking program with a heat preservation mode includes: a first boiling stage, a simmering stage, and a heat preservation stage; In the first boiling stage, controlling the working power of the cooking appliance to be P1, and the temperature control medium (302) absorbs heat to realize heat energy storage; and / or, In the simmering stage, controlling the working power of the cooking appliance to be P2, and the temperature control medium (302) releases heat to realize heat energy release; and / or, In the heat preservation stage, controlling the working power of the cooking appliance to be P3, and the temperature control medium (302) releases heat to realize heat energy release.

11. The control method of the cooking appliance according to claim 10, wherein The cooking program without a heat preservation mode includes: a second boiling stage, and the cooking order of the second boiling stage in the cooking program is the same as that of the first boiling stage; In the second boiling stage, controlling the working power of the cooking appliance to be P4; Wherein, (P1 - P4) × t ≤ Q; t is the duration for the temperature control medium (302) to absorb the heat generated by the cooking appliance during cooking; Q is the heat absorbed by the temperature control medium (302) from the cooking appliance during cooking.

12. An electronic device, characterized in that, The electronic device includes: A memory for storing computer instructions; A processor for calling and executing the computer instructions to implement the control method of the cooking appliance according to any one of claims 8-11.

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