Cooking utensil

Abstract

The invention discloses a cooking utensil. The electric cooker comprises a cooker body, and the cooker body comprises a shell assembly, a heating device, an inner pot and a heat transfer piece. The shell assembly is provided with a containing cavity. The heating device is arranged at the bottom of the containing cavity in an up-down moving mode. The inner pot can be placed in the heating device of the containing cavity or taken out of the containing cavity. The heat transfer part comprises a first contact part, a second contact part and a pivoting part located between the first contact part and the second contact part, the heat transfer part is pivotally arranged on the shell assembly through the pivoting part, the first contact part is constructed to be the bottom of the critical heating device, and the second contact part is constructed to be close to the side wall of the inner pot. When the inner pot is placed on the heating device, the heating device moves downwards and drives the first contact part to move downwards, so that the second contact part pivots in the direction close to the inner pot and abuts against the side wall of the inner pot. When the inner pot is taken out, the heating device moves upwards, and the second contact part pivots reversely.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking utensils, and in particular to a cooking utensil. Background Art

[0002] At present, most electric rice cookers that use heating plates to heat are heated from the bottom of the inner pot, which results in the bottom of the inner pot heating up quickly while the sides heat up slowly. As a result, when cooking is finished, the maturity, dryness, and taste of the rice on the sides, bottom, and middle are quite different, which reduces the user experience.

[0003] At present, some existing technologies add a heat source to the side of the inner pot to heat the side of the inner pot. For example, some rice cookers add a heating belt to the inner side of the insulation cover. However, adding a heat source to the side will increase the cost and add additional wiring leads and other structures, further increasing the complexity of the device and bringing higher challenges to safety.

[0004] Therefore, a cooking appliance is needed to at least partially solve the above problems. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Description of the Invention section. The Summary of the Invention section of this application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, the present application provides a cooking utensil, the cooking utensil comprising a pot body, the pot body comprising:

[0007] A housing assembly, wherein the housing assembly has a receiving cavity;

[0008] A heating device, the heating device is movably disposed at the bottom of the accommodating cavity;

[0009] An inner pot, the inner pot can be placed in the heating device of the accommodating cavity or taken out from the accommodating cavity;

[0010] a heat transfer member, the heat transfer member comprising a first contact portion, a second contact portion and a pivot portion located between the first contact portion and the second contact portion, the heat transfer member being pivotably disposed on the housing assembly via the pivot portion, the first contact portion being configured to be adjacent to the bottom of the heating device, and the second contact portion being configured to be adjacent to the side wall of the inner pot;

[0011] Wherein, when the inner pot is placed on the heating device, the heating device moves downward and drives the first contact portion of the heat transfer element to move downward, so that the second contact portion pivots in a direction close to the inner pot and abuts against the side wall of the inner pot;

[0012] When the inner pot is taken out, the heating device moves upward, and the second contact portion pivots in a direction away from the center of the accommodating cavity.

[0013] According to the pot body of the present application, the heat of the heating device is transferred to the side of the inner pot through the heat transfer element, which is beneficial to strengthen the cooking of the food in the upper layer of the inner pot, improve the overall uniformity of heating the contents, and thus improve the cooking effect. The heat transfer element is arranged in the form of a lever, so that the heat transfer element is in contact with the inner pot after the inner pot is placed, and the heat transfer element automatically moves away after the inner pot is taken out, which is beneficial to avoid scalding of users and can improve user experience.

[0014] Optionally, the gravity moment of the second contact portion is greater than the gravity moment of the first contact portion. According to the above arrangement, it is possible to conveniently realize that the second contact portion pivots in a direction away from the center of the accommodating cavity after the inner pot is taken out.

[0015] Optionally, the heating device is connected to the housing component via an elastic component so that the heating device can move up and down, and the elastic component applies an upward elastic force to the heating device so that the heating device has a tendency to move upward. According to the above configuration, the elastic component is used to realize the up and down movement of the heating device, which has a simple structure, low cost and good feasibility.

[0016] Optionally, when the second contact portion abuts against the side wall of the inner pot, any point on the first contact portion is located on the side opposite to the second contact portion of the vertical plane passing through the pivot axis. According to the above arrangement, after the second contact portion pivots to the limit position in the direction away from the center of the accommodating cavity, it can be prevented that the first contact portion is difficult to be pressed downward by the weight of the inner pot due to excessive upward pivoting when the inner pot is put in again.

[0017] Optionally, when the inner pot is placed on the heating device, the second contact portion pivots in a direction close to the inner pot and presses the inner pot inwardly, so that the second contact portion is in close contact with the side wall of the inner pot. According to the above configuration, the size of the heat transfer member has a certain interference, so that the first contact portion abuts against the heating device and the second contact portion abuts against the inner pot can both be subjected to a certain pressure, so that the heat transfer member can be in contact with the heating device and the inner pot even if there is a processing error.

[0018] Optionally, the housing assembly comprises:

[0019] Base;

[0020] A shell, wherein the shell is disposed on the base, and the shell and the base enclose the accommodating cavity;

[0021] The heat-insulating cover is arranged in the accommodating cavity, the heating device is arranged in the heat-insulating cover and connected to the heat-insulating cover through the elastic component, the inner pot can be placed in the heat-insulating cover or taken out from the heat-insulating cover, and the heat transfer element can be pivotally arranged on the heat-insulating cover. According to the above arrangement, the structure is simple, the processing cost is low, and the space utilization rate is high.

[0022] Optionally, the elastic component includes:

[0023] A columnar portion, the columnar portion is connected to the heating device, and an end of the columnar portion away from the heating device extends through the heat-insulating cover;

[0024] a stopper, the stopper being arranged at an end of the shape away from the heating device, so that the heat preservation cover is partially located between the stopper and the heating device; and

[0025] The elastic member is sleeved on the columnar portion and abuts between the heating device and the heat preservation cover. According to the above arrangement, the elastic member can be used to realize the up and down movement of the heating device while limiting the movement range of the heating device to prevent the heating device from falling out.

[0026] Optionally, the bottom wall of the heat preservation cover is provided with a first opening, the side wall of the heat preservation cover is provided with a second opening, and the heat transfer element is at least partially provided outside the heat preservation cover;

[0027] When the inner pot is placed on the heating device, the first contact portion extends through the first opening into the heat preservation cover and is connected to the heating device, and the second contact portion extends through the second opening into the heat preservation cover and is connected to the side wall of the inner pot. According to the above configuration, most of the heat transfer element is hidden outside the heat preservation cover, and the heat transfer element is in contact with the heating device and the inner pot by using the opening on the heat preservation cover, which improves the appearance, reduces the possibility of accidental burns by users, and improves the user experience.

[0028] Optionally, after the inner pot is taken out, the surface of the second contact portion for contacting the inner pot is flush with the inner contour of the heat preservation cover or is located outside the inner contour of the heat preservation cover. According to the above configuration, the second contact portion is configured not to protrude from the inner surface of the heat preservation cover, which further improves the safety of use and enhances the visual experience.

[0029] Optionally, a limiting portion is provided on the periphery of the second opening, and the limiting portion protrudes from the outer surface of the heat-insulating cover in a direction away from the center of the heat-insulating cover, and when the inner pot is taken out, the surface of the second contact portion for contacting the inner pot is located within the outer edge contour of the limiting portion. According to the above arrangement, the second contact portion can be prevented from being stuck by the edge of the second opening after pivoting outward to the extreme position, so that the next inward movement can be carried out smoothly.

[0030] Optionally, the heating device includes a heating wire, and the position where the first contact portion is attached to the heating device corresponds to the heating wire. According to the above configuration, the efficiency of heat utilization can be improved to the greatest extent.

[0031] Optionally, the heat transfer element is provided with a flange portion folded away from the center of the accommodating cavity; and / or

[0032] The heat transfer element is provided with a heat insulation layer, and the heat insulation layer is attached to the surface of the heat transfer element except the surface in contact with the inner pot and the heating device. According to the above arrangement, the structural strength of the heat transfer element can be improved and the heat loss caused by the heat transfer element can be reduced.

[0033] Optionally, a heat-conducting reinforcement layer is provided on the outer surface of the side wall of the inner pot, and the heat-conducting reinforcement layer is made of a heat-conducting material, and when the inner pot is placed on the heating device, the second contact portion abuts against the heat-conducting reinforcement layer. According to the above arrangement, the heat transfer efficiency can be improved.

[0034] Optionally, the area of ​​the thermal conductivity enhancement layer is greater than or equal to the contact area of ​​the second contact portion; and / or

[0035] The heat-conducting reinforcement layer is continuously arranged along the circumference of the inner pot. According to the above arrangement, it is beneficial to further improve the heat transfer effect and reduce heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The following drawings of the present application are used as a part of the present application for understanding the present application. The drawings show the embodiments of the present application and their descriptions, which are used to explain the principle of the present application.

[0037] In the attached figure:

[0038] Figure 1 It is a schematic diagram of an exploded view of a pot body of a cooking utensil according to an embodiment of the present application;

[0039] Figure 2 It is a cross-sectional schematic diagram of a pot body of a cooking utensil according to an embodiment of the present application, wherein the inner pot is placed in a heating device;

[0040] Figure 3It is a cross-sectional schematic diagram of a pot body of a cooking utensil according to an embodiment of the present application, wherein the inner pot is away from the heating device;

[0041] Figure 4 is a schematic cross-sectional view of a cooking utensil according to an embodiment of the present application at another angle;

[0042] Figure 5 It is a three-dimensional schematic diagram of a heat preservation cover according to an embodiment of the present application;

[0043] Figure 6 is a three-dimensional schematic diagram of a heat preservation cover from another perspective according to an embodiment of the present application;

[0044] Figure 7 is a three-dimensional schematic diagram of a heat transfer element according to an embodiment of the present application;

[0045] Figure 8 is a bottom schematic diagram of a heating device according to an embodiment of the present application;

[0046] Fig. 9 is a schematic longitudinal section diagram of a heat transfer element according to an embodiment of the present application;

[0047] Fig.10 is a schematic cross-sectional view of a heat transfer element according to an embodiment of the present application;

[0048] Fig.11 is a schematic diagram of an inner pot of a heat transfer element according to an embodiment of the present application;

[0049] Fig.12 Schematic diagram of an inner pot of a heat transfer element according to an embodiment of the present application, wherein a heat conduction reinforcement layer is provided on the side of the inner pot;

[0050] Fig.13 is another schematic diagram of an inner pot of a heat transfer element according to an embodiment of the present application, wherein a water gauge scale is provided;

[0051] Fig.14 is another schematic diagram of another inner pot of a heat transfer element according to an embodiment of the present application, wherein no water gauge scale is provided;

[0052] Fig.15 It is a cross-sectional schematic diagram of a pot body of a cooking utensil according to another embodiment of the present application, wherein the inner pot is placed in a heating device;

[0053] Fig.16 It is a cross-sectional schematic diagram of a pot body of a cooking utensil according to another embodiment of the present application, wherein the inner pot is away from the heating device;

[0054] Fig.17is a three-dimensional schematic diagram of a heat preservation cover according to another embodiment of the present application;

[0055] Fig.18 is a schematic diagram of a heat transfer element according to another embodiment of the present application;

[0056] Fig.19 for Fig.17 A schematic longitudinal section diagram of the heat transfer element; and

[0057] Fig. 20 It is a schematic bottom view of a heating device according to another embodiment of the present application. DETAILED DESCRIPTION

[0058] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0060] Ordinal numbers such as "first" and "second" cited in this application are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and similar expressions used in this document are for illustrative purposes only and are not limiting.

[0061] For example, "upper" and "lower" in this application refer to the cooking utensils being in use, or placed on the table. "Inside" and "outside" in this application refer to the central position of the cooking space.

[0062] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0063] First embodiment

[0064] The present application provides a cooking utensil, which includes a pot body 100. The pot body 100 can refer to Figure 1 , Figure 2 and Figure 3 , which includes a shell assembly, a heating device 130, an inner pot 150 and a heat transfer element 140. The shell assembly has a receiving cavity 103, and the inner pot 150 can be placed in or taken out of the receiving cavity 103 to facilitate cleaning of the inner pot 150. The inner pot 150 is usually made of metal material and has a circular opening on the upper surface, which is used to hold materials to be heated, such as rice, soup, etc.

[0065] The cover has a shape substantially corresponding to the pot body 100. The cover can be opened and closed on the pot body 100. Specifically, the cover is pivotally connected to the pot body 100 via a pivot shaft and can freely pivot between a closed position and an open position relative to the pot body 100 around a pivot axis where the pivot shaft is located, so as to facilitate closing and opening of the pot body 100. When the cover is closed on the pot body 100, it covers the inner pot 150 and forms a cooking space between the cover and the inner pot 150.

[0066] The heating device 130 of the pot body 100 is disposed at the bottom of the accommodating cavity 103, and the heating device 130 is disposed on the housing assembly in a manner that it can move up and down.

[0067] The heat transfer member 140 includes a first contact portion 141, a second contact portion 142 and a pivot portion 143. The pivot portion 143 is located between the first contact portion 141 and the second contact portion 142. The heat transfer member 140 is pivotably disposed on the housing assembly via the pivot portion 143, the first contact portion 141 is configured to be adjacent to the bottom of the heating device 130, and the second contact portion 142 is configured to be adjacent to the side wall of the inner pot 150. Preferably, the second contact portion 142 is configured to have a tendency to pivot in a direction away from the center of the accommodating cavity 103. As an example, the gravity moment of the second contact portion 142 can be designed to be greater than the gravity moment of the first contact portion 141.

[0068] When the inner pot 150 is placed on the heating device 130, the heating device 130 moves downward and drives the first contact portion 141 of the heat transfer member 140 to move downward, so that the second contact portion 142 pivots in a direction close to the inner pot 150 and abuts against the side wall of the inner pot 150. When the inner pot 150 is taken out, the heating device 130 moves upward, and the second contact portion 142 pivots in a direction away from the center of the accommodating cavity 103.

[0069] According to the pot body 100 of the present application, the heat of the heating device 130 is transferred to the side of the inner pot 150 through the heat transfer element 140, which is beneficial to strengthen the cooking of the upper layer of food in the inner pot 150, improve the overall uniformity of heating the contents, and thus improve the cooking effect. The heat transfer element 140 is set in the form of a lever, so that after the inner pot 150 is placed, the heat transfer element 140 is in contact with the inner pot 150, and after the inner pot 150 is taken out, the heat transfer element 140 automatically moves away, which is beneficial to avoid scalding of users and can improve user experience.

[0070] In order to ensure that the first contact portion 141 can be smoothly pressed downward when the inner pot 150 is put in again after the second contact portion 142 pivots to the limit position in the direction away from the center of the accommodating cavity 103, the heat transfer member 140 needs to satisfy the following structural form: when the second contact portion 142 abuts against the side wall of the inner pot 150, any point on the first contact portion 141 is located on the opposite side of the vertical plane passing through the pivot axis relative to the second contact portion 142. For example Fig. 9 As shown in FIG. 1 , a distance D>0 between a position of the second contact portion 142 closest to the first contact portion 141 and a vertical axis passing through the pivot center.

[0071] As an optional embodiment, the size of the heat transfer member 140 can be designed to have a certain interference, for example, it can have interference at the position of the first contact portion 141 and / or the second contact portion 142. In this way, when the inner pot 150 is placed on the heating device 130, the second contact portion 142 pivots in the direction close to the inner pot 150 and presses the inner pot 150 inward, so that the second contact portion 142 is in close contact with the side wall of the inner pot 150. Such a design allows the first contact portion 141 to be subjected to a certain pressure when it abuts against the heating device 130, and the second contact portion 142 to be subjected to a certain pressure when it abuts against the inner pot 150, so that the heat transfer member 140 can be in contact with the heating device 130 and the inner pot 150 even if there is a processing error.

[0072] Continue to refer Figures 1 to 4 The shell assembly generally includes an outer shell 101, a base 102 and a heat preservation cover 110, wherein the outer shell 101 is disposed on the base 102, and the heat preservation cover 110 is disposed in the outer shell 101. The inner pot 150 can be placed in or taken out of the heat preservation cover 110. In other words, the space in the heat preservation cover 110 forms the above-mentioned accommodating cavity 103. The heating device 130 can be disposed at the bottom of the heat preservation cover 110.

[0073] As an optional embodiment, the heating device can be moved up and down by an elastic component. The heating device 130 is connected to the housing component by the elastic component so that the heating device 130 can move up and down. The elastic component applies an upward elastic force to the heating device 130 so that the heating device 130 has a tendency to move upward, so that the heating device 130 can move up by itself after the inner pot 150 is taken out.

[0074] Specifically, the elastic component includes an elastic member 104, one end of which can be connected to the heating device 130, and the other end is arranged on the heat preservation cover 110, and the elastic member 104 can be in a compressed state. Figure 4 As shown in , the elastic component also includes a columnar portion 135, one end of which is arranged on the bottom side of the heating device 130, and the end of the columnar portion 135 away from the heating device 130 passes through the heat preservation cover 110, and the elastic member 104 is sleeved on the columnar portion 135 to be connected between the bottom surface of the heating device 130 and the bottom of the heat preservation cover 110. Preferably, the three columnar portions 135 are evenly spaced along the circumferential direction. Further, the elastic component also includes a stopper 136, which is arranged at the end of the columnar portion 135 away from the heating device 130, so that the heat preservation cover 110 is partially located between the stopper 136 and the heating device 130, thereby limiting the movement range of the heating device 130 and preventing it from falling out.

[0075] For more specific structure of the heat transfer element 140, refer to Figure 7 and Fig. 9 , the heat transfer member 140 further includes a first connection portion 144 and a second connection portion 145. The first connection portion 144 and the second connection portion 145 are both connected to the pivot portion 143 and are disposed on both sides of the pivot portion 143. The first connection portion 144 extends upward from the pivot portion 143 in a direction close to the center of the heat preservation cover 110, and the first contact portion 141 is connected to the upper end of the first connection portion 144. The second connection portion 145 extends upward from the pivot portion 143 in a direction away from the center of the heat preservation cover 110, and the second contact portion 142 is connected to the upper end of the second connection portion 145. Thus, the first contact portion 141 has a surface facing the heating device 130, and the second contact portion 142 has a surface facing the inner pot 150, which is conducive to improving the contact effects of the first contact portion 141 and the second contact portion 142 with the heating device 130 and the inner pot 150 respectively.

[0076] In order to improve the structural strength of the heat transfer element 140, for example, since the heat transfer element 140 is designed with an interference fit, both ends of the heat transfer element 140 are under pressure after the inner pot 150 is placed, and its strength needs to be improved to avoid damage. Preferably, the heat transfer element 140 is provided with a flange portion 146. For example, the flange portion 146 can be folded in a direction away from the center of the accommodating cavity 103.

[0077] Preferably, in order to simplify the structure, the heat transfer member 140 is pivotally disposed on the heat preservation cover 110. Figure 2 and Figure 3 and Figure 5 The heat preservation cover 110 is provided with a matching portion 113, and the matching portion 113 matches with the pivoting portion 143, for example, the two are linked by a pin shaft to realize the pivoting of the heat transfer element 140 relative to the pin shaft.

[0078] As an implementation, the heat transfer element 140 may be completely disposed inside the heat preservation cover 110. As another implementation, the heat transfer element 140 may be disposed flush with the heat preservation cover 110 after the inner pot 150 is placed.

[0079] As another implementation, the heat transfer element 140 is at least partially disposed outside the heat preservation cover 110. Figure 5 and Figure 6 The bottom wall of the heat preservation cover 110 is provided with a first opening 111, and the side wall of the heat preservation cover 110 is provided with a second opening 112. When the inner pot 150 is placed on the heating device 130, the first contact portion 141 extends into the heat preservation cover 110 through the first opening 111 and is connected to the heating device 130, and the second contact portion 142 extends into the heat preservation cover 110 through the second opening 112 and is connected to the side wall of the inner pot 150. This arrangement hides most of the heat transfer element 140 outside the heat preservation cover 110, and uses the opening on the heat preservation cover 110 to make the heat transfer element 140 contact with the heating device 130 and the inner pot 150, which improves the appearance, reduces the possibility of users accidentally touching and scalding, and improves the user experience.

[0080] Since the heat transfer element 140 is partially located outside the heat insulation cover 110 , in order to reduce heat loss, the heat transfer element 140 is preferably provided with a heat insulation layer, which is attached to the surface of the heat transfer element 140 except the surface in contact with the inner pot 150 and the heating device 130 .

[0081] As an optional embodiment, after the inner pot 150 is taken out, the surface of the second contact portion 142 for contacting the inner pot 150 is flush with the inner contour of the heat preservation cover 110 or is located outside the inner contour of the heat preservation cover 110. Therefore, the second contact portion 142 is set not to protrude from the inner surface of the heat preservation cover 110, which further improves the safety of use and improves the visual experience.

[0082] It is worth mentioning that, since the second contact portion 142 pivots away from the inner pot 150 when the inner pot 150 is taken out, in order to prevent the second contact portion 142 from pivoting excessively and thus contacting the outer shell 101 or other structural components, a stopper 115 is preferably provided on the heat preservation cover 110. Figure 5 and Figure 6The limiting portion 115 protrudes from the outer surface of the heat-insulating cover 110 and at least partially blocks the second opening 112 . When the inner pot 150 is taken out, the second contact portion 142 interferes with the limiting portion 115 .

[0083] Specifically, the limiting portion 115 includes a base portion 117 and a blocking portion 118, wherein the base portion 117 extends in a direction away from the heat-insulating cover 110, and is used to provide a depth for the second contact portion 142 to pivot outward. The blocking portion 118 extends from the base portion 117 in a direction toward the middle of the second opening 112 to partially block the second opening 112. Therefore, when the second contact portion 142 pivots outward, it will be limited by the blocking portion 118 after pivoting a certain angle.

[0084] As a preferred embodiment, the limiting portion 115 is configured as a flange disposed at the edge of the second opening 112. More preferably, two limiting portions 115 are disposed on both side edges of the second opening 112 along the circumferential direction of the heat preservation cover 110.

[0085] Continue to refer Figure 5 and Figure 6 The heat preservation cover 110 is preferably further provided with a reinforcing flange 116, which is provided at the upper edge of the second opening 112 and connected to the stopper 115. Thus, the strength of the edge of the second opening 112, especially the strength of the stopper 115, can be strengthened.

[0086] The heating device 130 includes an inner ring portion 131, a middle ring portion 132 disposed outside the inner ring portion 131, and an outer ring portion 133 disposed outside the middle ring portion 132. The first contact portion 141 of the heat transfer element 140 may contact the inner ring portion 131, the middle ring portion 132, or the outer ring portion 133. Figure 7 and Fig. 9 In the embodiment shown, the first contact portion 141 extends from the upper end of the first connecting portion 144 in a direction close to the center line of the heat preservation cover 110, and the first contact portion 141 is used to contact the middle circle portion 132 and / or the inner circle portion 131. As a preferred embodiment, the middle circle portion 132 of the heating device 130 is provided with a heating wire, and the first contact portion 141 of the heat transfer element 140 is preferably in contact with the middle circle portion 132 to improve the use efficiency of heat. Figure 8 The contact area 134 between the middle ring portion 132 of the heating device 130 and the heat transfer element 140 is shown.

[0087] exist Figures 1 to 9In the embodiment shown, since the first contact portion 141 has an upward surface when it is used to contact the middle ring portion 132 and / or the inner ring portion 131, the size of the first opening 111 is relatively large to facilitate the smooth passage of the first contact portion 141, and the matching portion 113 is arranged at the edge of the first opening 111. Preferably, the matching portion 113 is arranged as a flange of the first opening 111 to facilitate processing.

[0088] In order to improve the effect of heat transfer, the first contact portion 141 and the second contact portion 142 are preferably designed to adapt to the shapes of the heating device 130 and the inner pot 150, respectively. Specifically, the first contact portion 141 is connected to the heating device 130 through the first contact surface, and the second contact portion 142 is connected to the heat conduction area of ​​the side wall of the inner pot 150 through the second contact surface. The first contact surface is adapted to the shape of the corresponding position of the bottom of the heating device 130, so that the first contact surface fits the heating device 130, and the second contact surface is adapted to the shape of the heat conduction area position of the side wall of the inner pot 150, so that the second contact surface fits the side wall of the inner pot 150. As an implementation form, the shape of the first contact surface can be rectangular, positive direction, circular, fan-shaped or annular. The shape of the second contact surface can also be rectangular, positive direction, circular, fan-shaped or annular.

[0089] In order to further improve the heat transfer effect, refer to Fig.12 , a heat-conducting reinforcement layer 151 may be provided on the outer surface of the side wall of the inner pot 150, and the heat-conducting reinforcement layer 151 is provided corresponding to the above-mentioned heat-conducting area. The heat-conducting reinforcement layer 151 is made of a heat-conducting material, and when the inner pot 150 is placed on the heating device 130, the second contact portion 142 abuts against the heat-conducting reinforcement layer 151. In other words, the second contact surface is tightly fitted with the heat-conducting reinforcement layer 151. As an optional embodiment, the heat-conducting reinforcement layer 151 is continuously provided along the circumference of the inner pot 150. As another optional embodiment, the heat-conducting reinforcement layer 151 may be provided at intervals along the circumference of the inner pot 150. Preferably, the area of ​​the heat-conducting reinforcement layer 151 is greater than or equal to the contact area of ​​the second contact portion 142 (the area of ​​the second contact surface).

[0090] The thickness of the thermal conductivity strengthening layer 151 is 0.01-10 mm, for example, 0.01 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc. Specifically, when the thermal conductivity strengthening layer 151 is a metal layer, the thickness of the metal layer is 20-40 μm, for example, 25 μm, 26 μm, 27 μm, 28 μm, 29 μm, 30 μm, 31 μm, 32 μm, 33 μm, 34 μm, 35 μm, 36 μm, 37 μm, 38 μm, 39 μm, 40 μm, etc. When the thermal conductivity strengthening layer 151 is a coating layer, the thickness of the coating layer is 1.5-2.5 mm, for example, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, etc.

[0091] As an implementation, the pot body 100 is provided with n heat transfer elements 140, wherein n is an integer greater than or equal to 1. The area of ​​the first contact surface is S 1 The total bottom area of ​​the heating device 130 is S 底 .

[0092] Among them, reference Figure 8 The area of ​​the first contact surface and the total area of ​​the bottom surface of the heating device 130 must satisfy 0.01≤nS 1 / S 底 ≤1. For example, nS 1 / S 底 It can be 0.01, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, etc. Preferably, 0.09≤nS 1 / S 底 ≤0.11. For example, nS 1 / S 底 It can be 0.09, 0.1, 0.11, etc. More preferably, nS 1 / S 底 =0.1. In this arrangement, the heating device 130 and the heat transfer element 140 are arranged with appropriate contact areas, which is conducive to efficient heat conduction while saving energy. For example, the embodiment shown in this embodiment is provided with two opposite heat transfer elements 140, so n=2.

[0093] refer to Fig.11 , the area of ​​the second contact surface is S 2 , the total area of ​​the side wall of the inner pot 150 is S 侧 The area of ​​the second contact surface and the total area of ​​the side wall of the inner pot 150 must satisfy 0.001≤nS2 / S 侧 ≤1. For example, nS 2 / S 侧 It can be 0.001, 0.003, 0.005, 0.007, 0.006, 0.01, 0.05, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, etc. Preferably, 0.02≤nS 2 / S 侧 ≤0.04. For example, nS 2 / S 侧 It can be 0.02, 0.03, 0.04, etc. More preferably, nS 2 / S 侧 =0.03. According to the above configuration, the appropriate contact area between the inner pot 150 and the heat transfer element 140 is set, which reduces the heat loss in the heat transfer process and improves the heat conduction efficiency.

[0094] refer to Fig.10 , the cross-sectional area of ​​the heat transfer element 140 is S 截 The cross-sectional area of ​​the heat transfer element 140 must meet 20mm 2 ≤S 截 ≤600mm 2 For example, the cross-sectional area of ​​the heat transfer element 140 is S 截 Can be 20mm 2 , 50mm 2 , 100mm 2 , 150mm 2 , 230mm 2 , 300mm 2 , 350mm 2 , 400mm 2 , 450mm 2 , 500mm 2 , 550mm 2 , 600mm 2 etc. Preferably, 180 mm 2 ≤S 截 ≤220mm 2 For example, the cross-sectional area of ​​the heat transfer element 140 is S 截 Can be 180mm 2 , 190mm 2 , 200mm 2 , 210mm 2 , 220mm 2 etc. More preferably, S 截 =200mm 2The appropriate cross-sectional area of ​​the heat transfer element 140 is beneficial to the rapid increase of the temperature of the heat transfer element 140 itself and to the reduction of heat dissipation.

[0095] Furthermore, the heat transfer element 140 has a width of a, a thickness of b, and S 截 =a×b. The width a of the heat transfer element 140 satisfies 2mm≤a≤100mm. For example, the width a of the heat transfer element 140 can be 2mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc. Preferably, the width a of the heat transfer element 140 is 50mm.

[0096] The thickness b of the heat transfer element 140 satisfies 1mm≤b≤10mm. For example, the thickness b of the heat transfer element 140 can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc. Preferably, the thickness b of the heat transfer element 140 is 3mm.

[0097] Therefore, the heat transfer is ensured to have sufficient thermal conductivity, and the heat loss will not increase due to the excessive heat capacity of the body.

[0098] As an example, assume that the operating temperature of the heating device 130 is 250°C, the minimum heat transfer length of the heat transfer element 140 is l=0.18m, the weight of the heat transfer element 140 is m=60g, the heat capacity of the heat transfer element 140 is c=0.88J / (g·°C), and the thermal conductivity coefficient of the heat transfer element 140 is λ=237w / (m·k).

[0099] The energy required to heat the heat transfer element 140 from room temperature (25°C) to 125°C is Q 传热件 , which satisfies Q 传热件 = cm(T 后 -T 前 )=0.88×60×(125-25)=5280J.

[0100] The heating device 130 heats the heat transfer element 140 to 125° C. within 600 seconds, from which the minimum contact area between the heat transfer element 140 and the heating device 130 can be calculated:

[0101] Q 传热件 =S 1min ×λ×(T 发热盘 -T 传热件 ) / l×t=S 截min ×237×125×600 / 0.18.

[0102] It follows that: S 1min =Q 传热件 / (237×125×600 / 0.18)=0.0000514m 2 =51.4mm 2 .

[0103] That is, in this example, the minimum contact area between the heat transfer element 140 and the heating device 130 is 51.4 mm 2 .

[0104] The time required for the heat from the bottom of the heat transfer element 140 to be transferred to the top of the heat transfer element 140 is 600 seconds. The temperature of the bottom of the heat transfer element 140 is 230° C., and the temperature of the top is 125° C., from which the minimum cross-sectional area of ​​the heat transfer element 140 can be calculated.

[0105] q 传热功率 =Q 传热件 / t=5280 / 600=8.8J / s;

[0106] q 传热功率 =S 截min ×λ×(T 传热件底部 -T 传热件顶部 ) / 0.18=S 截min ×237×105 / 0.18.

[0107] It follows that S 截min =q 传热功率 / (237×105 / 0.18)=0.0000636m 2 =63.6mm 2 .

[0108] That is, in this example, the minimum cross-sectional area of ​​the heat transfer element 140 is 63.6 mm 2 .

[0109] As an optional embodiment, some inner pots 150 are provided with water scale marks 153 on the side walls to facilitate the user to add water or rice. In this case, the range of the heat conduction area along the height direction of the inner pot 150 is within the range defined by the highest scale line and the lowest scale line of the water scale mark 153. In this way, the heated area on the side of the inner pot 150 is associated with the water scale mark 153 of the inner pot 150, which is conducive to the heating of the side of the inner pot 150 to adapt to the cooking of various amounts of rice, improve the cooking effect, and enhance the user experience.

[0110] Specifically, refer to Fig.13 , the center line of the water gauge scale 153 along the height direction is the water gauge center line L1, the center line of the heat conduction area along the height direction is the heat conduction center line L2, and the height difference between the heat conduction center line L2 and the water gauge center line L1 is less than or equal to the height difference between two adjacent scale lines of the water gauge scale 153. Preferably, the height of the heat conduction center line L2 is H 1 , the height of the water level center line L1 is H2 , satisfying H 1 =i×H 2 , wherein 0.95≤i≤1.05. More preferably, the heat conduction center line L2 coincides with the water gauge center line L1. Such a setting can comprehensively improve the heating uniformity of cooking within the entire water gauge scale 153 range.

[0111] Continue to refer Fig.13 , the scale line located above the water gauge center line L1 and closest to the water gauge center line L1 is the first scale line L3, and the first scale line L3 is located between the water gauge center line L1 and the highest scale line L5. The scale line located below the water gauge center line L1 and closest to the water gauge center line L1 is the second scale line L4, and the second scale line L4 is located between the water gauge center line L1 and the lowest scale line L6. The height difference between the heat conduction center line L2 and the water gauge center line L1 is less than or equal to the height difference between the first scale line L3 and the second scale line L4. According to the above arrangement, the heating uniformity under low water level / low rice amount and high water level / high rice amount cooking can be improved.

[0112] As an optional embodiment, the upper boundary of the heat conduction area is located between the first scale line L3 and the highest scale line L5. Preferably, the height difference between the upper boundary of the heat conduction area and the first scale line L3 is E 1 , the height difference between the first scale line L3 and the highest scale line L5 is E 2 , satisfying E 1 =j×E 2 / 2, where 0.95≤j≤1.05. More preferably, E 1 =E 2 / 2.

[0113] As another optional embodiment, the lower boundary of the heat conduction area is located between the second scale line L4 and the lowest scale line L6. Preferably, the height difference between the lower boundary of the heat conduction area and the second scale line L4 is F 1 , the height difference between the first scale line L3 and the highest scale line L5 is F 2 , satisfying F 1 = k × F 2 / 2, where 0.95≤k≤1.05. More preferably, F 1 =F 2 / 2.

[0114] Setting appropriate upper and lower boundaries of the heat conduction area has better energy economy. The heat conducted to the inner pot 150 from the side will not be too much to cause overheating of the food, nor too little to cause uneven cooking of the food. It can also further adapt to the cooking of various amounts of rice.

[0115] As a preferred embodiment, the water gauge scale 153 ranges from 2 cups of rice to 8 cups of rice. Specifically, the lowest scale line L6 represents 2 cups of rice, the second scale line L4 represents 4 cups of rice, the first scale line L3 represents 6 cups of rice, and the highest scale line L5 represents 8 cups of rice.

[0116] As another optional embodiment, some inner pots 150 are not provided with a water level scale. In such an inner pot 150, in order to ensure that the heating of the side wall of the inner pot 150 by the heat transfer element 140 can contribute to the uniform heating of the upper layer of the food when cooking various amounts of rice, it is necessary to associate the heat conductive area with the center line L7 of the pot body.

[0117] Specifically, the height difference between the heat conduction center line L2 and the pot body center line L7 is less than or equal to the size of the heat conduction area along the height direction.

[0118] More specifically, the height of the pot body center line L7 is H 3 , its height H with the thermal conduction center line L2 1 Need to meet H 1 =c×H 3 , wherein 0.95≤c≤1.05. For example, c can be selected from 0.95, 0.97, 0.98, 0.99, 0.9, 1.0, 1.01, 1.02, 1.03, 1.04, 1.05. Preferably, H 1 =H 3 This setting can improve the heating uniformity when cooking low and high rice quantities.

[0119] Optionally, the dimension of the heat conduction area along the height direction is Y, and the height dimension of the inner pot 150 is X, wherein 0.2≤Y / X≤0.8. Exemplarily, the ratio between the dimension Y of the heat conduction area along the height direction and the height dimension X of the inner pot 150 can be 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, etc. Preferably, 0.45≤Y / X≤0.55, for example, the ratio between the dimension Y of the heat conduction area along the height direction and the height dimension X of the inner pot 150 can be 0.45, 0.46, 0.47, 0.48, 0.49, 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, etc. More preferably, Y / X=0.5. The appropriate ratio setting helps the food obtain more calories without causing excessive heat dissipation, and has better energy economy.

[0120] Second embodiment

[0121] Figures 15 to 20The second embodiment of the cooking device 200 is a variation of the first embodiment 100 , and the second embodiment 200 is different from the first embodiment in the contact position between the heat transfer element 140 and the heating device 130 .

[0122] Fig.15 It is shown that the first contact portion 241 abuts against the heating device 130 , and the second contact portion 142 abuts against the inner pot 150 . Fig.16 It shows a situation where the inner pot 150 is picked up and the second contact portion 142 automatically separates from the side wall of the inner pot 150 .

[0123] Specifically, in this embodiment, the heat transfer element 140 is in contact with the outer ring portion 133 of the heating device 130, for example Fig. 20 FIG. 2 shows the contact area 234 between the outer ring portion 133 of the heating device 130 and the heat transfer element 140. In this case, the first contact portion 241 extends from the upper end of the first connecting portion 144 in a direction away from the center of the heat preservation cover 110. Fig.18 and Fig.19 In this case, the first contact portion 241 has an inclined surface to face the outer ring portion 133 of the heating device 130. As a result, a smaller first opening 211 is required to allow the first contact portion 241 to pass smoothly. In this way, the matching portion 213 can be separated from the first opening 211, and the smaller opening is conducive to maintaining the strength and insulation effect of the heat preservation cover 110. The matching portion 213 can be a flange set on the bottom wall of the heat preservation cover 110, refer to Fig.17 , that is, another opening is arranged at intervals relative to the first opening 211, and the matching portion 213 is constructed as a flange of the above-mentioned other opening.

[0124] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present application. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present application. The features described herein in one embodiment may be applied to another embodiment individually or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0125] The present application has been illustrated through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and explanation, and the present application is not limited to the above-mentioned embodiments. According to the teachings of the present application, more variations and modifications can be made, and these variations and modifications all fall within the scope of protection claimed by the present application.

Claims

1. A cooking utensil, characterized in that: The invention comprises a pot body, wherein the pot body comprises: A housing assembly, wherein the housing assembly has a receiving cavity; A heating device, the heating device is movably disposed at the bottom of the accommodating cavity; An inner pot, the inner pot can be placed in the heating device of the accommodating cavity or taken out from the accommodating cavity; a heat transfer member, the heat transfer member comprising a first contact portion, a second contact portion and a pivot portion located between the first contact portion and the second contact portion, the heat transfer member being pivotably disposed on the housing assembly via the pivot portion, the first contact portion being configured to be adjacent to the bottom of the heating device; and the second contact portion being configured to be adjacent to the side wall of the inner pot; Wherein, when the inner pot is placed on the heating device, the heating device moves downward and drives the first contact portion of the heat transfer element to move downward, so that the second contact portion pivots in a direction close to the inner pot and abuts against the side wall of the inner pot; When the inner pot is taken out, the heating device moves upward, and the second contact portion pivots in a direction away from the center of the accommodating cavity.

2. The cooking device according to claim 1, characterized in that: The gravity moment of the second contact portion is greater than the gravity moment of the first contact portion.

3. The cooking device according to claim 1, characterized in that: The heating device is connected to the housing component via an elastic component so that the heating device can move up and down. The elastic component applies an upward elastic force to the heating device so that the heating device has a tendency to move upward.

4. The cooking device according to claim 1, characterized in that: When the second contact portion abuts against the side wall of the inner pot, any point on the first contact portion is located on the opposite side of the vertical plane passing through the pivot axis relative to the second contact portion.

5. The cooking device according to claim 1, characterized in that: When the inner pot is placed on the heating device, the second contact portion pivots in a direction close to the inner pot and presses the inner pot inwardly, so that the second contact portion is in close contact with the side wall of the inner pot.

6. The cooking device according to claim 3, characterized in that: The housing assembly comprises: Base; A shell, wherein the shell is disposed on the base, and the shell and the base enclose the accommodating cavity; A heat-insulating cover is arranged in the accommodating cavity, the heating device is arranged in the heat-insulating cover and connected to the heat-insulating cover through the elastic component, the inner pot can be placed in the heat-insulating cover or taken out from the heat-insulating cover, and the heat transfer element can be pivotally arranged on the heat-insulating cover.

7. The cooking device according to claim 6, characterized in that: The elastic component comprises: A columnar portion, the columnar portion is connected to the heating device, and an end of the columnar portion away from the heating device extends through the heat-insulating cover; a stopper, the stopper being arranged at an end of the shape away from the heating device, so that the heat preservation cover is partially located between the stopper and the heating device; and An elastic member is sleeved on the columnar portion and abuts between the heating device and the heat-insulating cover.

8. The cooking device according to claim 6, characterized in that: The bottom wall of the heat preservation cover is provided with a first opening, the side wall of the heat preservation cover is provided with a second opening, and the heat transfer element is at least partially provided outside the heat preservation cover; When the inner pot is placed on the heating device, the first contact portion extends into the heat preservation cover through the first opening and is connected to the heating device, and the second contact portion extends into the heat preservation cover through the second opening and is connected to the side wall of the inner pot.

9. The cooking device according to claim 8, characterized in that: When the inner pot is taken out, the surface of the second contact portion for contacting the inner pot is flush with the inner contour of the heat-insulating cover or is located outside the inner contour of the heat-insulating cover.

10. The cooking appliance according to claim 8, characterized in that The heat-insulating cover is provided with a limiting portion, which protrudes from the outer surface of the heat-insulating cover and at least partially blocks the second opening. When the inner pot is taken out, the second contact portion interferes with the limiting portion.

11. The cooking device according to any one of claims 1 to 10, characterized in that: The heating device includes a heating wire, and the position where the first contact portion is attached to the heating device corresponds to the heating wire.

12. The cooking device according to any one of claims 1 to 10, characterized in that: The heat transfer element is provided with a flange portion folded away from the center of the accommodating cavity; and / or The heat transfer element is provided with a heat insulation layer, and the heat insulation layer is attached to the surface of the heat transfer element except the surface in contact with the inner pot and the heating device.

13. The cooking device according to any one of claims 1 to 10, characterized in that: The outer surface of the side wall of the inner pot is provided with a heat-conducting reinforcement layer, and the heat-conducting reinforcement layer is made of a heat-conducting material. When the inner pot is placed on the heating device, the second contact portion abuts against the heat-conducting reinforcement layer.

14. The cooking appliance according to claim 13, characterized in that The area of ​​the thermal conductivity enhancement layer is greater than or equal to the contact area of ​​the second contact portion; and / or The heat-conducting reinforcement layer is continuously arranged along the circumference of the inner pot.

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