Cooking utensil

Abstract

The cooking utensil comprises a machine body, a cooking element internally provided with a cooking cavity and a temperature controller arranged on the machine body and used for detecting the temperature of the cooking element, and the temperature controller comprises a temperature sensing element and a temperature control element. The temperature sensing element comprises a temperature sensing head internally provided with a medium cavity, a temperature sensing medium filled in the medium cavity and a capillary tube communicated with the medium cavity, the temperature sensing element is communicated with fluid of the temperature control element through the capillary tube, the temperature sensing head is further provided with a solid part, and at least partial area of the medium cavity is arranged on the periphery of the solid part in a surrounding mode. At least part of the area of the medium cavity is located on the peripheral side of the temperature sensing head, and the outer side wall of the temperature sensing head forms the heat dissipation side wall of the medium cavity. The medium cavity of the temperature sensing element is at least partially located on the periphery of the temperature sensing head, so that the temperature sensing element can be rapidly cooled, the reset capacity of the temperature sensing element is improved, and the temperature sensing element can play a normal role in continuous cooking operation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of kitchen appliances, and particularly relates to a cooking utensil. BACKGROUND

[0002] The existing cooking utensil needs to be provided with a temperature controller to detect the temperature of the cooking element in operation, so as to accurately control the temperature of each cooking program and achieve good cooking effect. Taking a frying and baking machine as an example, the commonly used temperature control device of the existing frying and baking machine is a bimetallic strip type adjustable temperature controller or a jump temperature controller. The existing bimetallic strip type adjustable temperature controller is harsh on the installation position, the dynamic difference (dynamic difference refers to the difference between the disconnection temperature and the reset temperature) of the bimetallic strip type adjustable temperature controller is large, and the temperature sensing bimetallic strip is installed far away from the heat source. However, the installation position far away from the heat source will result in slow temperature sensing, large temperature difference of the whole machine (the temperature difference of the whole machine refers to the difference between the maximum value of the wave peak and the minimum value of the wave trough of the center temperature of the baking tray of the frying and baking machine after a period of time), which affects the food making effect and user experience. Although the existing jump temperature controller has a smaller dynamic difference than the bimetallic strip type adjustable temperature controller, the temperature sensing surface is small and the contact area with the baking tray is small, which affects the heat transfer performance of the whole machine, resulting in slow temperature sensing of the whole machine and poor timeliness of the temperature adjustment of the whole machine.

[0003] The existing technology discloses a liquid expansion temperature controller, which comprises a temperature sensing main body and a temperature control main body. The temperature sensing main body has an internal cavity, and a thermal expansion medium is arranged in the cavity. The upper end surface of the temperature sensing main body is integrally arranged in close contact with the surface of a temperature measuring device. The temperature sensing main body is in fluid communication with the temperature control main body through a capillary tube. The temperature control main body is electrically connected with a heating element for heating the temperature measuring device, so as to control the opening and closing of the heating element according to the expansion or contraction of the thermal expansion medium. Compared with the existing adjustable temperature controller and the jump temperature controller, the liquid expansion temperature controller in the technical scheme has a fast temperature sensing rate, a small dynamic difference, can reduce the temperature amplitude of the whole machine, and can improve the detection accuracy. However, because the upper end surface of the temperature sensing main body is integrally arranged in close contact with the surface of the temperature measuring device, the temperature sensing main body cannot be quickly reset during use.

[0004] The existing cooking utensils, taking a frying oven as an example, have different cooking powers when they are used to cook different food materials. Taking frying eggs and frying chicken wings as examples, because eggs are thin and easy to cook, too high a fire and power can easily cause the surface of the eggs to quickly char, while the inside may not be completely solidified, so the fire should not be too large when frying eggs, and generally a small or medium fire is used, usually with a power of about 700W-1000W, while chicken wings are large in size and not easy to cook, and a higher power is required for cooking, usually about 1200W-1500W, to ensure that the heat can penetrate the chicken wings, so that the inside is cooked thoroughly and a crispy shell is formed on the surface, so for these two types of cooking food materials, the temperature limit of the temperature controller is also different, that is, the temperature limit of the temperature controller is lower in the cooking program of frying eggs, and the temperature limit of the temperature controller is higher in the cooking program of frying chicken wings, to meet the temperature control needs of different cooking programs. However, in actual application, the frying oven may be used continuously for a short time, and the adjacent two use processes may be used to cook different food materials, requiring different cooking powers. Taking the above-mentioned frying chicken wings and frying eggs as examples, in the process of frying chicken wings, the temperature sensing end of the temperature controller reaches a high temperature, and when the frying chicken wings are finished and switched to the frying egg program in a short time, if the temperature sensing end of the temperature controller cannot quickly reset, especially cannot reset to below the temperature limit matched with frying eggs, the control unit of the frying oven will control the heating device to stop, and the cooking program cannot be performed, the frying egg cannot achieve the expected frying effect within the preset time, giving the user the illusion that the frying oven is malfunctioning, reducing the user experience. Practical new type content

[0005] The present application provides a kind of cooking utensils to solve the poor reset ability of the temperature controller of existing cooking utensils, so as to cause the temperature fluctuation or unable to work normally in the process of using cooking utensils frequently, inconvenient for users Technical problems.

[0006] The technical scheme adopted by the present application is:

[0007] A kind of cooking utensils, including machine body, cooking element with internal cooking cavity and temperature controller for detecting the temperature of the cooking element arranged in the machine body, the temperature controller includes temperature sensing element and temperature control element, the temperature sensing element includes temperature sensing head with internal medium cavity and temperature sensing medium filled in the medium cavity, the temperature sensing element is in fluid communication with the temperature control element by capillary tube, the temperature sensing head is also provided with entity part, at least part of the region of the medium cavity is arranged around the outer periphery of the entity part, so that at least part of the region of the medium cavity is located on the outer periphery side of the temperature sensing head, and the outer side wall of the temperature sensing head constitutes the heat dissipation side wall of the medium cavity.

[0008] The temperature controller in the application comprises a temperature sensing element and a temperature control element, the temperature sensing element is internally provided with a temperature sensing medium, and the temperature sensing medium of the temperature sensing element is in fluid communication with the temperature control element through a capillary tube, which utilizes the thermal expansion and contraction characteristics of the temperature sensing medium to achieve temperature control. Compared with the existing adjustable temperature controller and the snap temperature controller, in the temperature control process of the temperature controller in the application, the heat of the cooking element can be directly transmitted to the temperature sensing medium through the temperature sensing head, the temperature sensing rate is fast, the dynamic error is small, the whole machine temperature amplitude can be reduced, and the detection precision is improved.

[0009] Compared with the technical solution that the upper end face of the temperature sensing head of the liquid expansion temperature controller in the prior art is in contact with the cooking element, the temperature sensing head in the application comprises a solid part and a medium cavity, that is, the medium cavity does not occupy the whole temperature sensing head, but only occupies part of the area, and at least part of the area of the medium cavity is located on the outer circumferential side of the temperature sensing head, so that the outer side wall of the temperature sensing head constitutes the heat dissipation side wall of the medium cavity. The good heat dissipation efficiency of the outer circumferential side of the temperature sensing head can make the temperature sensing medium in the medium cavity quickly recover to the state before expansion, improve the reset ability of the temperature controller in the application, and enable the temperature controller to reliably switch for different cooking programs even if the cooking appliance switches different cooking materials in a short time, so as to ensure the normal operation of the cooking appliance and improve the user's experience.

[0010] The temperature sensing head has a contact surface capable of being in contact with the cooking element, and the contact surface is at least part of the outer side wall of the medium cavity.

[0011] Because the temperature sensing head in the application comprises a solid part and a medium cavity, the contact position of the cooking element and the temperature sensing head is different, which will cause different temperature rising rates of the temperature sensing head. When the solid part is in contact with the cooking element and the medium cavity is not directly in contact with the cooking element, the temperature rise of the medium cavity comes from the heat conduction of the temperature rise of the solid part. The indirect temperature rising mode of the medium cavity will cause slow temperature sensing rate and poor sensitivity. In the technical solution, the contact surface is at least part of the outer side wall of the medium cavity, so that the outer side wall of the medium cavity can be directly in contact with the cooking element, which helps the rapid heating of the temperature sensing medium, provides the sensitivity of sensing, and ensures the timeliness of the temperature control of the cooking appliance.

[0012] At least part of the area of the top wall of the medium cavity constitutes the contact surface, and the top wall of the solid part is recessed relative to the top wall of the medium cavity to constitute a non-contact surface for avoiding the cooking element.

[0013] The entity part is recessed relative to the medium cavity in the technical solution, so that the entity part does not contact the cooking element. At least part of the area of the top wall of the medium cavity constitutes a contact surface capable of contacting the cooking element. The small-area contact makes the contact between the temperature sensing head in the technical solution and the cooking element more close, the temperature sensing medium in the medium cavity is heated at a faster rate when the contact surface is heated and transmits heat to the medium cavity, and the heat conduction efficiency is greatly improved, thereby improving the temperature sensing rate, so that the temperature controller can quickly detect the current temperature of the cooking element and respond, the cooking program of the cooking appliance can be adjusted in real time, and the cooking effect is ensured, and the user experience is improved. Moreover, the small-area contact makes the contact points between the contact surface and the cooking element more concentrated, which can reduce the measurement error caused by poor contact, especially when the cooking appliance deforms due to the extension of use time or external impact and has uneven or special shape, the small-area contact between the contact surface and the cooking element in the technical solution can better adapt to these complex surface changes and ensure the accuracy of temperature measurement.

[0014] The contact surface includes part of the area of the top wall of the medium cavity and at least part of the area of the top wall of the entity part.

[0015] If the contact surface contacting the cooking element is all the top wall of the medium cavity, the temperature controller is too sensitive, the temperature limiting is not high, and it is difficult to achieve the temperature limiting performance of the existing temperature controller. In the technical solution, the contact surface contacting the cooking element includes part of the area of the top wall of the medium cavity and at least part of the area of the top wall of the entity part, which avoids the full contact of the top wall of the medium cavity and the cooking element, so that the heat source of the temperature sensing medium in the medium cavity is partly from the direct heat conduction of the top wall of the medium cavity and partly from the indirect heat conduction after the temperature rise of the entity part. The phenomenon of frequent interruption and start of the heating process caused by the temperature controller being too sensitive to cause the heating device to be immediately cut off when the temperature just reaches the set value, and the heating device to immediately heat when the temperature slightly decreases is avoided, so that the cooking element can maintain a stable cooking temperature during the cooking process, and the cooking effect of the food material is ensured.

[0016] The medium cavity is in a closed ring shape in the temperature sensing head.

[0017] In the technical solution, the medium cavity is in a closed annular distribution in the temperature sensing head, the temperature sensing medium is filled in the annular medium cavity, the annular medium cavity is designed to make the temperature sensing medium more evenly distributed in the medium cavity, in the temperature rising process, the distribution mode makes the temperature sensing medium more fully perceive the temperature change, avoids misjudgment caused by local temperature difference, and improves the temperature measurement accuracy, in the temperature falling process, the distribution mode makes the temperature sensing medium evenly radiate heat to quickly reset below the temperature threshold corresponding to the current cooking program, and improves the reset ability of the temperature controller. From the structure, the structure of the annular medium cavity is relatively stable, and can resist external mechanical impact and vibration to a certain extent. The design makes the temperature controller in the technical solution more durable during use, reduces the damage risk caused by external force, and improves the overall reliability of the temperature controller.

[0018] The outer periphery of the medium cavity and / or the inner periphery of the medium cavity extends in an arc shape.

[0019] The technical solution can reduce the probability of damage and deformation of the medium cavity when touching sharp objects, and improve the stability and service life of the temperature controller.

[0020] The machine body includes a shell and a reflection cover between the shell and the cooking element, the reflection cover is provided with a heating piece for heating the cooking element, and the reflection cover is provided with a lifting part arranged to be lifted relative to the mounting end surface of the heating piece, and the temperature sensing head is mounted on the lifting part.

[0021] The technical solution can concentrate the heat generated during the operation of the heating piece to the cooking element through the reflection cover, which reduces heat loss, improves heat energy utilization efficiency, and reduces the amount of heat radiation to the internal part of the machine body, thereby providing good protection effect for the electronic components arranged in the internal part of the machine body. The heating piece is mounted on the reflection cover, and the reflection cover will have a certain degree of temperature rise during the operation of the heating piece. The lifting part arranged to be lifted relative to the mounting end surface of the heating piece is arranged on the reflection cover, and the temperature sensing head is mounted on the lifting part, which can reduce the influence of the temperature rise of the reflection cover on the temperature measurement accuracy of the temperature sensing head, and make the temperature sensing head more accurately perceive the actual temperature of the cooking element, thereby ensuring the temperature control effect.

[0022] The reflection cover is provided with a support rib, and the heating piece is supported on the support rib.

[0023] The support rib can enhance the overall rigidity of the reflector, reduce deformation of the reflector caused by uneven thermal expansion or mechanical stress during use, and ensure the relative position between the heating element and the cooking element, thereby ensuring the cooking thermal efficiency.

[0024] The temperature sensing element is movably arranged in the machine body, and the temperature sensing element further comprises a positioning bracket for mounting the temperature sensing head.

[0025] In the technical solution, the temperature sensing element is movably arranged in the machine body, which can better fit the surface of the cooking element, especially when the surface of the cooking element deforms, the movable design of the temperature sensing element can adaptively contact the surface of the cooking element, reduce temperature measurement errors caused by poor contact, and improve the accuracy and sensitivity of temperature sensing. In addition, the floating design of the temperature sensing element can play a buffering role, reduce mechanical stress caused by machine body vibration or thermal expansion, effectively protect the temperature sensing element, and prolong the service life of the temperature sensing element. By arranging the elastic reset members abutting against the positioning bracket on the machine body, the position of the temperature sensing head can be dynamically compensated to ensure that the temperature sensing head can always be in contact with the cooking element, thereby ensuring the timeliness and accuracy of temperature measurement. By arranging multiple elastic reset members, the installation of the temperature sensing head can have horizontal self-correction capability, so that the temperature sensing head remains stable during floating, and ensures good contact between the temperature sensing head and the cooking element.

[0026] The positioning bracket comprises a positioning lug fixed to the temperature sensing head and located on the side of the temperature sensing head, and an avoiding channel is formed in the inside of the positioning lug for leading out the capillary tube.

[0027] In the technical solution, the positioning lug can firmly fix the temperature sensing head on the positioning bracket, ensure the stability of the temperature sensing head during work, and reduce displacement caused by vibration or external force. The avoiding channel formed in the inside of the positioning lug can provide a special leading-out path for the capillary tube, avoid interference or collision between the capillary tube and other parts in the machine body during installation and use, thereby reducing the risk of capillary tube damage, and the design of the avoiding channel makes the installation of the capillary tube more explicit, reduces the complexity in the assembly process, and improves the assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0029] Figure 1 A perspective view of a part of the structure of the cooking appliance according to an embodiment of the application Figure 1 ;

[0030] Figure 2 A perspective view of a part of the structure of the cooking appliance according to an embodiment of the application Figure 2 ;

[0031] Figure 3 A perspective view of the temperature controller according to an embodiment of the application

[0032] Figure 4 A sectional view of the temperature controller according to an embodiment of the application

[0033] Figure 5 A perspective view of the temperature sensing element according to an embodiment of the application

[0034] Figure 6 A schematic view of the relative positions of the cooking element, the body and the temperature controller according to an embodiment of the application

[0035] Figure 7 A sectional view of the temperature sensing head according to an embodiment of the application

[0036] Figure 8 A sectional view of the temperature sensing head according to an embodiment of the application

[0037] Figure 9 A sectional view of the temperature sensing head according to an embodiment of the application

[0038] Figure 10 A sectional view of the temperature sensing head according to an embodiment of the application

[0039] Wherein,

[0040] 1. The body; 11. The outer shell; 12. The reflecting cover; 121. The supporting convex rib; 122. The lifting part;

[0041] 2. The temperature sensing element; 21. The temperature sensing head; 211. The contact surface; 212. The non-contact surface; 22. The medium cavity; 23. The capillary tube; 24. The positioning bracket; 241. The positioning lug; 2411. The guide hole; 242. The avoiding passage; 25. The solid part;

[0042] 3. The temperature control element; 31. The diaphragm box; 32. The lever mechanism; 33. The temperature control switch;

[0043] 4. The heating element;

[0044] 5, guide post; 51, limit end;

[0045] 6, elastic reset member;

[0046] 7, cooking element. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0048] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details and, therefore, the scope of the present application is not limited to the details disclosed herein. It is to be understood that the embodiments of the present application and the features thereof can be combined with each other unless otherwise specified and limited.

[0049] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0050] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, or communication; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] As shown in Figure 1 , Figure 2 and Figure 5 , a cooking appliance comprises a body 1, a cooking element 7 with a cooking cavity, and a temperature controller arranged on the body 1 and used for detecting the temperature of the cooking element 7, the temperature controller comprising a temperature sensing element 2 and a temperature control element 3, the temperature sensing element 2 comprising a temperature sensing head 21 with a medium cavity 22 and a temperature sensing medium filled in the medium cavity 22, the temperature sensing element 2 being in fluid communication with the temperature control element 3 through a capillary tube 23, the temperature sensing head 21 further comprising a solid part 25, at least part of the medium cavity 22 being arranged around the outer periphery of the solid part 25, so that at least part of the medium cavity 22 is located on the outer periphery side of the temperature sensing head 21, and the outer side wall of the temperature sensing head 21 constitutes the heat dissipation side wall of the medium cavity 22.

[0053] The present application is not limited to the type of cooking appliance, which can be an electric baking pan, a grill, an electric rice cooker, etc. As shown in Figure 1 and Figure 2 , a specific example of applying the temperature controller in the present application to a grill is given, and a specific application example of installing the temperature controller on the base of the grill for detecting the temperature of the lower baking plate is shown, but the present application is not limited thereto, and the temperature controller can also be installed on the upper cover of the grill for detecting the temperature of the upper baking plate.

[0054] As a preferred embodiment of the present application, as shown in Figure 3 and Figure 4 , the temperature control element 3 comprises a diaphragm box 31, a lever mechanism 32 and a temperature control switch 33, the diaphragm box 31 being in fluid communication with the medium cavity 22 through the capillary tube 23, when the temperature sensing medium in the medium cavity 22 expands or shrinks, the diaphragm box 31 also expands or shrinks accordingly, the action of the diaphragm box 31 is transmitted to the temperature control switch 33 through the lever mechanism 32 to drive the temperature control switch 33 to turn on or off, thereby realizing temperature control of the cooking element.

[0055] The temperature controller in the present application comprises a temperature sensing element 2 and a temperature control element 3, the temperature sensing element 2 is provided with a temperature sensing medium, and the temperature sensing medium of the temperature sensing element 2 is in fluid communication with the temperature control element 3 through a capillary tube 23, which utilizes the thermal expansion and contraction characteristics of the temperature sensing medium to realize temperature control. Compared with the existing adjustable temperature controller and snap temperature controller, in the temperature measurement process of the temperature controller in the present application, the heat of the cooking element can be directly transmitted to the temperature sensing medium through the temperature sensing head 21, the temperature sensing rate is fast, the dynamic error is small, the temperature amplitude of the whole machine can be reduced, and the detection accuracy is improved.

[0056] Compared with the prior art, the temperature sensing head 21 in the present application includes both the solid part 25 and the medium cavity 22, that is, the medium cavity 22 does not occupy the whole temperature sensing head 21, but only occupies part of the area, and at least part of the area of the medium cavity 22 is located on the outer circumferential side of the temperature sensing head 21, so that the outer side wall of the temperature sensing head 21 constitutes the heat dissipation side wall of the medium cavity. The good heat dissipation efficiency of the outer circumferential side of the temperature sensing head 21 can make the temperature sensing medium in the medium cavity 22 quickly recover to the state before expansion, improve the reset ability of the temperature controller in the present application, and make the temperature controller capable of reliably switching for different cooking programs even if the cooking appliance switches different cooking materials in a short time, ensuring the normal operation of the cooking appliance and improving the user's experience.

[0057] The relative position relationship between the medium cavity 22, the solid part 25 and the cooking element in the present application can adopt any one of the following embodiments:

[0058] Embodiment one: the temperature sensing head 21 has a contact surface 211 capable of contacting the cooking element, and the contact surface 211 is at least part of the outer side wall of the medium cavity 22. Because the temperature sensing head 21 in the present application includes the solid part 25 and the medium cavity 22, the contact position of the cooking element with the temperature sensing head 21 is different, which will cause different temperature rising rates of the temperature sensing head 21. When the solid part 25 contacts the cooking element 21 and the medium cavity 22 does not directly contact the cooking element, the temperature rise of the medium cavity 22 comes from the heat conduction of the temperature rise of the solid part 25. This indirect temperature rising mode of the medium cavity 22 will cause slow temperature sensing rate and poor sensitivity. In the present embodiment, the contact surface 211 is at least part of the outer side wall of the medium cavity 22, so that the outer side wall of the medium cavity 22 can directly contact the cooking element, which helps the rapid heating of the temperature sensing medium and provides the sensitivity of sensing, ensuring the timeliness of the temperature control of the cooking appliance.

[0059] The contact surface 211 in the present embodiment can adopt any one of the following embodiments:

[0060] Embodiment 1: at least part of the top wall of the medium cavity 22 constitutes the contact surface 211, and the top wall of the solid part 25 is recessed relative to the top wall of the medium cavity 22 to constitute a non-contact surface 212 for avoiding the cooking element.

[0061] In this embodiment 1, the solid part 25 is recessed relative to the top wall of the medium cavity 22 so that the solid part 25 does not contact the cooking element. At least a portion of the top wall of the medium cavity 22 forms a contact surface that can contact the cooking element. The small contact area makes the contact between the temperature sensor 21 and the cooking element in this embodiment 1 more compact. When the contact surface is heated, the temperature-sensing medium in the medium cavity 22 heats up faster when transferring heat into the medium cavity 22, which greatly improves the heat conduction efficiency and thus improves the temperature sensing rate. This allows the thermostat to quickly detect the current temperature of the cooking element and respond accordingly, and the cooking program of the cooking appliance can be adjusted in real time, thereby ensuring the cooking effect and improving the user experience. Moreover, the small contact area makes the contact points between the contact surface and the cooking element more concentrated, which can reduce measurement errors caused by poor contact. Especially when the surface of the cooking appliance becomes uneven or has a special shape due to prolonged use or external impact, the small contact area between the contact surface and the cooking element in this embodiment 1 can better adapt to these complex surface changes and ensure the accuracy of temperature measurement.

[0062] Specifically, this embodiment 1 may further include any one of the following examples:

[0063] Example 1: such as Figure 7 As shown, a portion of the top wall of the medium cavity 22 is recessed compared to the rest, allowing the relatively protruding part of the top wall of the medium cavity 22 to contact the cooking element, forming the contact surface 211. The top wall of the solid portion 25 is recessed relative to the protruding part of the top wall of the medium cavity 22 to avoid the cooking element. That is, in this Example 1, only a portion of the top wall of the medium cavity 22 forms the contact surface 211. The heat source for the temperature rise of the temperature-sensing medium in the medium cavity 22 comes partly from direct heat conduction at the contact surface and partly from heat exchange between the temperature-sensing media. In this Example 1, most of the medium cavity is in an exposed state without contact with the cooking element, resulting in higher heat dissipation efficiency and stronger resetting ability.

[0064] Example 2: such as Figure 8 As shown, the entire area of ​​the top wall of the medium cavity 22 can contact the cooking element to form the contact surface 211. However, the statement that the entire area can contact the cooking element is not absolute. During use, if the bottom surface of the cooking element deforms and becomes concave due to external impact, localized heat deformation, or other factors, then a portion of the top wall of the medium cavity 22 may not necessarily contact the concave portion of the cooking element. In this Example 2, the term "entire area" refers to a portion of the area as in Example 1. In this Example 2, the top wall of the solid portion 25 is concave relative to the protruding portion of the top wall of the medium cavity 22 to avoid the cooking element. In this Example 2, the heat transfer area of ​​the top wall of the medium cavity 22 in contact with the cooking element is further increased compared to Example 1, therefore the temperature rise rate of the temperature-sensing medium is faster and the sensitivity is higher.

[0065] Example 2: As Figure 9 As shown, the contact surface 211 includes a portion of the top wall of the medium cavity 22 and at least a portion of the top wall of the solid portion 25. Specifically, a portion of the top wall of the medium cavity 22 contacts the cooking element to form part of the contact surface 211, the remaining portion of the top wall of the medium cavity 22 is recessed relative to the contact surface 211 to avoid the cooking element, and at least a portion of the top wall of the solid portion 25 contacts the cooking element to form part of the contact surface 211. In this embodiment 2, the contact surface 211 that contacts the cooking element includes both a portion of the top wall of the medium cavity 22 and at least a portion of the top wall of the solid part 25. This avoids full contact between the top wall of the medium cavity 22 and the cooking element, ensuring that the heat source of the temperature-sensing medium in the medium cavity 22 comes partly from direct heat conduction through the top wall of the medium cavity 22 and partly from indirect heat conduction after the solid part 25 has heated up. This prevents the thermostat from being too sensitive, causing the heating device to be immediately shut off when the temperature just reaches the set value, and then immediately restarting when the temperature drops slightly, resulting in frequent interruptions and restarts of the heating process. This ensures that the cooking element can maintain a stable cooking temperature during the cooking process, guaranteeing the cooking effect of the food.

[0066] Implementation Method Two: (e.g.) Figure 10 As shown, the temperature sensing head 21 has a contact surface 211 that can contact the cooking element. At least a portion of the top wall of the solid portion 25 constitutes the contact surface 211. The top wall of the medium cavity 22 is recessed relative to the solid portion 25 to form a non-contact surface 212 that avoids the cooking element. In this second embodiment, the heat source for the temperature rise of the temperature sensing medium comes from indirect heat conduction after the solid portion 25 has risen. Its temperature rise rate is relatively slow, but because the top wall of the medium cavity 22 does not contact the cooking element, the medium cavity 22 cools down quickly after reaching the temperature limit threshold, and its recovery ability is also relatively fast.

[0067] As a preferred embodiment of this application, such as Figure 4As shown, the medium cavity 22 is in a closed annular distribution in the temperature sensing head 21. The medium cavity 22 is in a closed annular distribution in the temperature sensing head 21, the temperature sensing medium is filled in the annular medium cavity 22, the annular medium cavity 22 is designed to make the distribution of the temperature sensing medium in the medium cavity 22 more uniform, in the process of temperature rise, this distribution mode enables the temperature sensing medium to perceive the temperature change more comprehensively, avoids the misjudgment caused by local temperature difference, and improves the temperature measurement accuracy, in the process of temperature drop, this distribution mode enables the temperature sensing medium to dissipate heat uniformly, so as to quickly reset below the temperature threshold corresponding to the current cooking program, and improves the reset ability of the temperature controller. From the structure, the structure of the annular medium cavity 22 is relatively stable, and can resist external mechanical impact and vibration to a certain extent. This design makes the temperature controller in the technical solution more durable during use, reduces the damage risk caused by external force, and thus improves the overall reliability of the temperature controller.

[0068] As another embodiment of the present application, the present embodiment is not shown, in which the medium cavity is in a columnar structure, including but not limited to a cylindrical structure, a square columnar structure, etc.

[0069] In another implementation, the present embodiment is not shown, part of the medium cavity is around the outer periphery of the solid part, and another part is around the inner periphery of the solid part.

[0070] The present application does not limit the circumference of the medium cavity 22. In an embodiment not shown, the circumference of the medium cavity 22 is a straight line. In another embodiment, as shown, the outer circumference of the medium cavity 22 and / or the inner circumference of the medium cavity 22 extends in an arc shape. By setting the outer circumference of the medium cavity 22 and / or the inner circumference of the medium cavity 22 to extend in an arc shape, the probability of damage and deformation of the medium cavity 22 when touching sharp objects can be reduced, and the stability and service life of the temperature controller can be improved. Figure 5

[0071] The cooking appliance in the present application also includes a heating element for heating the cooking element, and the present application does not limit the setting position of the heating element, which can adopt any one of the following embodiments:

[0072] Embodiment three: the present embodiment three is not shown, in which the heating element is fixed to the bottom of the cooking element, for example, the heating element is fixed to the cooking element by welding. In a preferred embodiment, the body includes a shell and a reflecting cover between the shell and the cooking element, the reflecting cover can reflect heat to the cooking element to reduce heat loss, and the temperature sensing element is arranged in the reflecting cover.

[0073] Embodiment four: as shown, the heating element is arranged in the solid part. Figure 1 ​As shown, the machine body 1 comprises a housing 11 and a reflecting cover 12 between the housing 11 and the cooking element, the heating element 4 is installed on the reflecting cover 12, the reflecting cover 12 is provided with a lifting portion 122 arranged to be lifted relative to the mounting end surface of the heating element 4, and the temperature sensing head 21 is installed on the lifting portion 122. In the fourth embodiment, the reflecting cover 12 is additionally provided to reflect the heat generated by the heating element 4 to the cooking element during operation, thereby reducing heat loss, improving heat energy utilization efficiency, reducing the amount of heat radiated to the inside of the machine body 1, and providing good protection for the electronic components inside the machine body 1. The heating element 4 is installed on the reflecting cover 12, and the reflecting cover 12 will have a certain degree of temperature rise during operation of the heating element 4. By arranging the lifting portion 122 on the reflecting cover 12 to be lifted relative to the mounting end surface of the heating element 4, and installing the temperature sensing head 21 on the lifting portion 122, the influence of the temperature rise of the reflecting cover 12 on the temperature measurement accuracy of the temperature sensing head 21 can be reduced, and the temperature sensing head 21 can more accurately sense the actual temperature of the cooking element, thereby ensuring the temperature control effect.

[0074] As a preferred embodiment of the fourth embodiment, Figure 1 As shown, the reflecting cover 12 is provided with a support rib 121, and the heating element 4 is supported on the support rib 121. In this embodiment, the design of the support rib 121 can enhance the overall rigidity of the reflecting cover 12, reduce deformation of the reflecting cover 12 caused by uneven thermal expansion or mechanical stress during use, thereby ensuring the relative position between the heating element 4 and the cooking element and ensuring the cooking heat efficiency. Moreover, by supporting the heating element 4 on the support rib 121, the contact area between the heating element 4 and the reflecting cover 12 itself can be reduced, thereby reducing heat transfer from the heating element 4 to the reflecting cover 12 during operation, reducing the temperature rise of the reflecting cover 12, and reducing the influence of temperature changes of the reflecting cover 12 itself on temperature measurement by the temperature controller, thereby ensuring the accuracy of temperature measurement by the temperature controller.

[0075] As a preferred embodiment of the present application, the temperature sensing element 2 is floatingly arranged in the machine body 1. By floatingly arranging the temperature sensing element 2 in the machine body 1, the temperature sensing element 2 can better fit the surface of the cooking element, especially when the surface of the cooking element deforms, the floating design of the temperature sensing element 2 can make it adaptively contact the surface of the cooking element, reduce temperature measurement errors caused by poor contact, and improve the accuracy and sensitivity of temperature sensing. In addition, the floating design of the temperature sensing element 2 can act as a buffer to reduce mechanical stress caused by vibration or thermal expansion of the machine body 1, effectively protecting the temperature sensing element 2 and prolonging the service life of the temperature sensing element 2.

[0076] As Figure 6As shown, the temperature sensing element 2 further comprises a positioning bracket 24 for mounting the temperature sensing head 21, and the body 1 is provided with an elastic reset member 6 abutting against the positioning bracket 24. The elastic reset member 6 may, for example, be a spring. By providing the elastic reset member 6 abutting against the positioning bracket 24 on the body 1, the position of the temperature sensing head 21 can be dynamically compensated, ensuring that the temperature sensing head 21 can always be in contact with the cooking element, thereby ensuring the timeliness and accuracy of temperature measurement.

[0077] Further, the body 1 is provided with multiple elastic reset members 6 abutting against the positioning bracket 24. By providing multiple elastic reset members 6, the installation of the temperature sensing head 21 can have a horizontal self-correcting capability, so that the temperature sensing head 21 can remain stable during floating, ensuring good contact between the temperature sensing head 21 and the cooking element. As shown, Figure 6 which gives a specific example of providing two elastic reset members 6 to drive the temperature sensing element 2 to float. However, in actual application, the elastic reset members 6 can also be provided in three, four or even more.

[0078] In a preferred embodiment, as shown in Figure 3 and Figure 6 the positioning bracket 24 comprises a positioning lug 241 fixedly connected with the temperature sensing head 21 and located on the side of the temperature sensing head 21, and an avoiding passage 242 for leading out the capillary tube 23 is formed in the inside of the positioning lug 241. The design of the positioning lug 241 can firmly fix the temperature sensing head 21 on the positioning bracket 24, ensuring that the temperature sensing head 21 remains stable during work, reducing displacement caused by vibration or external force. By forming the avoiding passage 242 in the inside of the positioning lug 241, a special leading-out path can be provided for the capillary tube 23, avoiding interference or collision between the capillary tube 23 and other components in the body 1 during installation and use, thereby reducing the risk of damage to the capillary tube 23, and the design of the avoiding passage 242 makes the installation of the capillary tube 23 more explicit, reducing the complexity of the assembly process and improving the assembly efficiency.

[0079] Further, as shown in Figure 3 the side of the temperature sensing head 21 is provided with multiple positioning lugs 241 arranged at intervals, which can reduce the manufacturing cost on the one hand and facilitate the leading-out of the capillary tube 23 on the other hand.

[0080] As a preferred embodiment of the present embodiment, as shown in Figure 6As shown, the body 1 is provided with a guide limiting structure for guiding the up-and-down floating of the temperature sensing element 2, which includes a guide column 5 arranged on the body 1 and a guide hole 2411 arranged on the positioning bracket 24 and matched with the guide column 5, and the elastic reset member 6 is sleeved on the guide column 5, and one end of the guide column 5 is provided with a limiting end head 51 for preventing the elastic reset member 6 from falling out. Of course, the guide column 5 can also be arranged on the positioning bracket 24, and the guide hole 2411 is arranged on the body 1, and a falling prevention structure for preventing the guide column 5 from falling out is arranged on the body 1. In the embodiment, the matching design of the guide column 5 and the guide hole 2411 can accurately guide the up-and-down floating of the temperature sensing element 2, ensure the accuracy of the movement direction of the temperature sensing element 2, avoid the jam caused by deviation, and ensure that the temperature sensing element 2 can be attached to the cooking element to realize temperature measurement. The elastic reset member 6 is sleeved on the guide column 5, which can provide stable elastic support for the temperature sensing element 2 and improve the stability of the up-and-down floating of the temperature sensing element 2. The limiting end head 51 arranged on one end of the guide column 5 can effectively prevent the elastic reset member 6 from falling out during the elastic expansion and contraction, and ensure the stability of the structure.

[0081] The places not described in the application can be realized by using or referring to the existing technology.

[0082] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the differences from other embodiments.

[0083] The above only describes the embodiments of the application and does not limit the application, and the technical features or structures in the foregoing different embodiments can be combined as needed to form other specific technical solutions. For those skilled in the art, the application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the scope of the claims of the application.

Claims

1. A cooking appliance comprising a body, a cooking element having a cooking cavity, and a temperature controller provided in the body and configured to detect a temperature of the cooking element, characterized in that, The temperature controller comprises a temperature sensing element and a temperature control element, the temperature sensing element comprises a temperature sensing head with a medium cavity, and a temperature sensing medium filled in the medium cavity, the temperature sensing element is in fluid communication with the temperature control element through a capillary tube, the temperature sensing head is further provided with a solid part, at least part of the medium cavity is arranged around the outer periphery of the solid part, so that at least part of the medium cavity is located on the outer periphery side of the temperature sensing head, and the outer side wall of the temperature sensing head constitutes the heat dissipation side wall of the medium cavity.

2. The cooking appliance according to claim 1, wherein The temperature sensing head has a contact surface capable of contacting the cooking element, and the contact surface is at least part of the outer side wall of the medium cavity.

3. The cooking appliance according to claim 2, wherein At least part of the top wall of the medium cavity constitutes the contact surface, and the top wall of the solid part is recessed relative to the top wall of the medium cavity to constitute a non-contact surface for avoiding the cooking element.

4. The cooking appliance according to claim 2, wherein The contact surface comprises part of the top wall of the medium cavity and at least part of the top wall of the solid part.

5. The cooking appliance according to claim 1, wherein The medium cavity is in a closed annular distribution in the temperature sensing head.

6. The cooking appliance according to claim 1, wherein The outer periphery of the medium cavity and / or the inner periphery of the medium cavity extends in an arc shape.

7. The cooking appliance according to claim 1, wherein The machine body comprises a housing and a reflecting cover between the housing and the cooking element, the reflecting cover is provided with a heating member for heating the cooking element, and the reflecting cover is provided with a lifting part arranged to be lifted relative to the mounting end surface of the heating member, and the temperature sensing head is mounted on the lifting part.

8. The cooking appliance according to claim 7, wherein The reflecting cover is provided with a support rib, and the heating member is supported on the support rib.

9. The cooking appliance according to claim 1, wherein The temperature sensing element is floatingly arranged in the machine body, and the temperature sensing element further comprises a positioning bracket for mounting the temperature sensing head, and the machine body is provided with a plurality of elastic return members abutting against the positioning bracket.

10. The cooking appliance according to claim 9, wherein The positioning bracket comprises a positioning lug fixedly connected with the temperature sensing head and located on the periphery side of the temperature sensing head, and an avoiding channel for leading out the capillary tube is formed on the inner side of the positioning lug.

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