Upper cover assembly and cooking device thereof

Abstract

The invention provides an upper cover assembly and a cooking device thereof, and relates to the technical field of household appliances, the upper cover assembly comprises a shell and a cover plate, and the shell and the cover plate jointly enclose to form an accommodating space; at least one heat conduction disc is arranged on the cover plate, and an opening of the heat conduction disc faces downwards; the thermoelectric module is arranged in the accommodating space; the thermoelectric module is arranged above the heat conducting disc and is in thermal connection with the heat conducting disc; the thermoelectric module is provided with a refrigeration mode and a heating mode, so that cold or heat is transferred downwards through the heat conduction disc. The double functions of heating and refrigerating are achieved, the upper cover assembly can transfer heat or cold energy to the inner container from the upper portion, food can be heated, and cooling and fresh keeping of the food can be achieved through refrigerating. In the heating process, the upper cover assembly can work in cooperation with a heating part of the base assembly, so that the cooking effect and the food taste are improved, the overall structural design is reasonable, and the function is practical.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to an upper cover assembly and a cooking device thereof. BACKGROUND

[0002] At present, the common heating cooking equipment represented by electric rice cookers and electric pressure cookers, the function of the upper cover structure is mainly sealing and heat preservation, through the physical buckling between the upper cover and the pot body, a relatively closed cooking space is formed, so as to effectively reduce the steam loss and heat overflow, so as to maintain the basic heat environment required in the cooking process. Therefore, the traditional upper cover is generally provided with a simple mechanical exhaust valve or a steam passage for adjusting the internal pressure during cooking to prevent overflow caused by excessive pressure or excessive boiling. The heating task is completely borne by the independent heating component arranged at the bottom of the pot or around the side wall, and the upper cover itself does not have any heat output or heat management capability. Therefore, the heat transfer in the cooking cavity mainly presents a one-way conduction mode from bottom to top or from surrounding to center. Although this mode can basically complete the heating task when dealing with conventional cooking needs such as cooking rice and stewing soup, due to the fixed and single position of the heat source, the heat energy needs to be transmitted upward through the pot material and food medium, the path is long and the thermal resistance is large, resulting in low overall thermal efficiency and relatively high energy consumption. Secondly, due to the uneven distribution of heat in the vertical direction, the heating effect is affected.

[0003] However, with the growth of consumers' demand for cooking diversification and healthy diet, especially when making some special dishes or processing certain food materials, auxiliary heating is often needed on the top to achieve more uniform stewing, or refrigeration is needed to achieve the effect of cooling and preservation, but the traditional equipment cannot meet the above needs at all.

[0004] Therefore, it is of great significance to develop an upper cover assembly with heating and refrigeration dual functions, which can work cooperatively with the base assembly to improve the cooking effect and user experience. SUMMARY

[0005] The present application overcomes the shortcomings in the prior art and provides an upper cover assembly and a cooking device thereof, which has heating and refrigeration dual functions. The upper cover assembly can transfer heat or cold from the top to the inner container, which can heat food and also can cool and preserve food through refrigeration.

[0006] In order to solve the above technical problems, the present application is realized by the following technical scheme: An upper cover assembly, comprising a shell and a cover plate, the shell and the cover plate jointly enclose a containing space; At least one heat-conducting disc is arranged on the cover plate, and the opening of the heat-conducting disc is arranged downward; Further comprising a thermoelectric module arranged in the accommodating space, the thermoelectric module is arranged above the heat-conducting disc and is in thermal connection with the heat-conducting disc; the thermoelectric module is provided with a refrigeration mode and a heating mode, so as to transfer cold or heat downward through the heat-conducting disc.

[0007] Further comprising a frame body provided with a mounting hole, the heat-conducting disc comprises a main body part and a connecting part protruding upward relative to the main body part, the connecting part penetrates through the mounting hole and is in contact with the thermoelectric module.

[0008] Further, the thermoelectric module is an integrally formed structure and is provided with an extension part extending toward the connecting part, the extension part is in thermal connection with all the connecting parts of the heat-conducting disc.

[0009] Further, the thermoelectric module is provided with a heat-dissipating fan on the hot end side.

[0010] Further, the main body part of the heat-conducting disc is provided with an arched reinforcing part, the reinforcing part is provided with heat-dissipating holes; further comprising a heat-dissipating channel arranged in the frame body, the shell is provided with an air outlet, one end of the heat-dissipating channel is in communication with the heat-dissipating holes, and the other end is in communication with the air outlet.

[0011] Further, the heat-conducting disc is provided with a temperature sensor.

[0012] Further comprising a fastening structure, the fastening structure comprises a pressing button movably arranged on the shell; a buckle plate hinged to the frame body; a first elastic member arranged between the buckle plate and the frame body, for providing an elastic force to the buckle plate to reset it; the pressing button is movably connected with the buckle plate, and pressing the pressing button can drive the buckle plate to rotate against the elastic force of the first elastic member.

[0013] Further comprising a pressing spring structure, the pressing spring structure comprises a pressing piece hinged to the frame body, an end of the pressing piece is provided with a guide inclined surface; a second elastic member arranged between the pressing piece and the frame body, for providing a downward elastic force to the pressing piece; the pressing piece is provided with a limiting part, the limiting part is movably connected with the frame body, for limiting the pressing piece from excessively rotating under the action of the second elastic member.

[0014] Further, the frame body is provided with an accommodating cavity, the accommodating cavity is provided with a control module; the shell is provided with a control panel, the control panel is electrically connected with the control module.

[0015] A cooking device comprises a base, an inner pot and the upper cover assembly of any one of the above, the inner pot is arranged in the base, the upper cover assembly is hinged with the base and can be covered on the base to form a cooking cavity between the upper cover assembly and the inner pot.

[0016] Compared with the prior art, the present application has the following beneficial effects: The upper cover assembly of the present application is provided with a thermoelectric module and a heat-conducting disc, realizing the dual functions of heating and refrigeration, so that the upper cover assembly can transfer heat or cold from top to the inner liner based on the cooking requirements, which can heat food and also can cool and preserve food through refrigeration. In the heating process, the upper cover assembly can work cooperatively with the heating component of the base assembly, thereby improving the cooking effect and food taste, and the overall structure design is reasonable and the function is practical. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present application, together with the embodiments of the present application, to explain the present application and do not constitute a limitation to the present application, and in the drawings: Figure 1 is a general view of the upper cover assembly of the present application; Figure 2 is an exploded view of the upper cover assembly of the present application; Figure 3 is a schematic view of the thermoelectric module in a separated state; Figure 4 is an enlarged view of the pressing button and the compression and springing structure part; Figure 5 is a structural schematic view of the pressing button and the buckle plate; Figure 6 is a structural schematic view of the compression and springing structure; Figure 7 is a structural schematic view of the cooking device.

[0018] In the drawings: 1, outer shell; 101, air outlet; 2, cover plate; 3, heat-conducting disc; 301, main body part; 3011, reinforcing part; 3012, heat dissipation hole; 302, connecting part; 4, thermoelectric module; 401, extension part; 5, frame body; 501, mounting hole; 6, heat dissipation fan; 7, heat dissipation channel; 8, temperature sensor; 9, pressing button; 10, buckle plate; 11, compression and springing structure; 1101, compression piece; 11011, guide inclined surface; 11012, limiting part; 1102, second elastic piece; 13, containing cavity; 14, control module; 15, control panel; 16, base. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, it should be understood that the preferred embodiments described herein are only used to explain and illustrate the present application, and are not used to limit the present application.

[0020] As shown in Figures 1 to 6 , the present application claims a cover assembly, comprising a housing 1, a cover plate 2, a heat-conducting disc 3 and a thermoelectric module 4. Wherein, the housing 1 and the cover plate 2 are fixedly connected, and together form an internal accommodating space. The cover plate 2 has a lower surface facing the cooking cavity. At least one heat-conducting disc 3 is provided on the cover plate 2, which is downwardly open. The heat-conducting disc 3 is preferably made of a metal material with good heat-conducting performance, and its opening is downwardly open so as to directly or indirectly exchange heat with the heat or food in the lower cooking cavity.

[0021] A thermoelectric module 4 is provided in the accommodating space. The thermoelectric module 4 is preferably a semiconductor thermoelectric element based on the Peltier effect, which has a cold end and a hot end, and can switch between cooling and heating modes by changing the direction of the current. The thermoelectric module 4 is located directly above the heat-conducting disc 3 and has a thermal connection. Therefore, when the thermoelectric module 4 works in heating mode, the heat generated by the thermoelectric module 4 is transmitted downwardly to the cooking cavity through the heat-conducting disc 3; when it works in cooling mode, the cold quantity is transmitted downwardly through the heat-conducting disc 3.

[0022] It also includes a frame 5 for fixing various components in the accommodating space, the frame 5 is provided with mounting holes 501, in combination Figure 1 and Figure 3 , the heat-conducting disc 3 wraps the main body part 301 and a connecting part 302 protruding upwardly therefrom, the connecting part 302 passes through the mounting hole 501 on the frame 5, so that the top thereof is exposed above the frame 5 and directly and closely contacts with the thermoelectric module 4 provided thereon, forming an efficient heat-conducting path. The mounting hole 501 also plays a certain positioning and fixing role for the connecting part 302.

[0023] The thermoelectric module 4 adopts an integrated structure, that is, a single thermoelectric module 4 is used, which is convenient for direct overall replacement, and also has an extension part 401 extending in the direction of the connecting part 302. Each extension part 401 is in thermal connection with the connecting part 302 of one heat-conducting disc 3. This integrated design simplifies the structure and is convenient for replacement and maintenance.

[0024] A cooling fan 6 is provided on the hot end side of the thermoelectric module 4, which can accelerate the flow of air and timely discharge the waste heat generated by the hot end of the thermoelectric module 4 out of the accommodating space, so as to ensure the working efficiency and long-term operation stability. There are gaps between the housing 1 and the internal components, which can allow the internal and external air flow when the cooling fan 6 works.

[0025] On the main body part 301 of the heat conduction disc 3, a reinforcing part 3011 is arranged to be arched upward, which not only increases the structural strength, but also has heat dissipation holes 3012 formed thereon. The heat dissipation channel 7 is installed in the frame body 5, one end of the heat dissipation channel 7 communicates with the heat dissipation holes 3012 on the heat conduction disc 3, and the other end communicates with the air outlet 101 formed on the outer shell 1. Part of the heat generated in the heating mode can be finally discharged from the air outlet 101 through the heat dissipation holes 3012 and the heat dissipation channel 7, which prevents the heat from accumulating in the accommodation space, affecting other elements or causing the upper cover shell to overheat, and is also beneficial to the discharge of water vapor generated during heating The temperature sensor 8 is arranged on the heat conduction disc 3 in the embodiment, which can be a thermocouple or a thermistor. The temperature sensor 8 monitors the temperature of the heat conduction disc 3 in real time and feeds back signals to the control module, so as to realize the control of the working mode of the thermoelectric module 4 and ensure that the temperature of the upper part of the cooking cavity reaches the set requirement.

[0026] The buckle structure between the base assembly and the outer shell 1 includes a pressing button 9 movably arranged on the outer shell 1, a buckle plate 10 hingedly arranged on the frame body 5, and a first elastic member connected between the buckle plate 10 and the frame body 5, from Figure 5 It can be seen that the pressing button 9 abuts against the buckle plate 10. When it is needed to open the upper cover, the pressing button 9 is pressed down to drive the buckle plate 10 to rotate against the elastic force of the first elastic member, so as to release the buckling with the edge of the base assembly. After the button is released, the buckle plate 10 is automatically reset under the action of the first elastic member.

[0027] The pressing and springing structure 11 is further arranged on the cover plate 2, which includes a pressing piece 1101 hingedly arranged on the frame body 5, an end portion of which is provided with a guide slope 11011; a second elastic member 1102 connected between the pressing piece 1101 and the frame body 5, which is used to provide downward elastic pressure; and a limiting part 11012 arranged on the pressing piece 1101, which movably cooperates with the corresponding structure on the frame body 5 to prevent the pressing piece 1101 from being pressed or rotated excessively; and the guide slope 11011 movably contacts the inner container in the base assembly.

[0028] The compression and spring-up structure 11 has two functions. The first function is that when the upper cover assembly is buckled on the base assembly, the compression piece 1101 is pressed down under the action of the second elastic piece 1102, contacts the inner container edge through the guide inclined surface 11011, thereby has a downward compression force on the inner container, and makes the inner container contact the heating component in the base assembly more closely. Since the compression piece 1101 abuts on the inner container in the buckled state, the compression piece 1101 rotates a certain angle backward against the elastic force of the second elastic piece 1102, so that the second elastic piece 1102 has elastic potential energy. Therefore, the second function is that when the buckle structure between the upper cover assembly and the base assembly is released, the compression piece 1101 rotates back under the action of the second elastic piece 1102, thereby makes the upper cover assembly slightly spring up, and makes the buckle plate 10 in the buckle structure and the base assembly release the buckle, so as to facilitate the subsequent easy lifting of the upper cover assembly, and the structure is ingenious.

[0029] The rack body 5 is provided with a containing cavity 13 for placing a control module 14. The surface of the shell 1 is provided with a control panel 15 electrically connected with the control module 14. The user can select heating / cooling mode, set temperature time and the like through the control panel 15, and the control module 14 drives the thermoelectric module 4, the heat dissipation fan 6 and the like according to the instruction.

[0030] As shown in Figure 7 It is also disclosed that the cooking device comprises a base 16, the inner pot is placed in the base 16, and the upper cover assembly is provided. The upper cover assembly is connected with the base 16 through a hinge and can be opened and closed. When the upper cover assembly is buckled on the base 16, the heat conduction disc 3 of the upper cover assembly and the inner pot jointly form a closed cooking cavity, thereby realizing multifunctional cooking processing of food.

[0031] The upper cover assembly is provided with the thermoelectric module 4 and the heat conduction disc 3, thereby realizing the dual functions of heating and cooling. Therefore, the upper cover assembly can transfer heat or cold to the inner container from the top based on the cooking demand, can heat food, and can realize cooling and preservation of food through cooling. In the heating process, the upper cover assembly can work cooperatively with the heating component of the base assembly, thereby improving the cooking effect and the taste of food. The overall structure design is reasonable, and the function is practical.

[0032] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application is described in detail with reference to the embodiments, for those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced, but any modification, equivalent replacement, improvement and the like within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An upper cover assembly, characterized by, The application relates to a heat transfer device, which comprises a shell (1) and a cover plate (2), the shell (1) and the cover plate (2) jointly form a containing space; At least one heat transfer disc (3) is arranged on the cover plate (2), and the opening of the heat transfer disc (3) is arranged downward; A thermoelectric module (4) is arranged in the containing space, the thermoelectric module (4) is arranged above the heat transfer disc (3) and is in thermal connection with the heat transfer disc (3); the thermoelectric module (4) is provided with a refrigeration mode and a heating mode, so as to transfer cold or heat downward through the heat transfer disc (3).

2. The overcap assembly of claim 1, wherein, A frame body (5) is further arranged, the frame body (5) is provided with a mounting hole (501), the heat transfer disc (3) comprises a main body part (301) and a connecting part (302) which is protruded upward relative to the main body part (301), the connecting part (302) penetrates through the mounting hole (501) and is in contact with the thermoelectric module (4).

3. The overcap assembly of claim 2, wherein, The thermoelectric module (4) is an integrated structure and is provided with an extension part (401) which extends to the direction of the connecting part (302), the extension part (401) is in thermal connection with all the connecting parts (302) of the heat transfer discs (3).

4. The overcap assembly of claim 3, wherein, A heat dissipation fan (6) is arranged on the hot end side of the thermoelectric module (4).

5. The overcap assembly of claim 2, wherein, The main body part (301) of the heat transfer disc (3) is provided with an arched reinforcing part (3011), the reinforcing part (3011) is provided with a heat dissipation hole (3012); a heat dissipation channel (7) is arranged in the frame body (5), the shell (1) is provided with an air outlet (101), one end of the heat dissipation channel (7) is in communication with the heat dissipation hole (3012), and the other end is in communication with the air outlet (101).

6. The overcap assembly of claim 2, wherein, A temperature sensor (8) is arranged on the heat transfer disc (3).

7. The overcap assembly of claim 2, wherein, A buckling structure is further arranged, the buckling structure comprises a pressing button (9) which is movably arranged on the shell (1); A buckle plate (10) which is hinged to the frame body (5); A first elastic member is arranged between the buckle plate (10) and the frame body (5) and is used for providing an elastic force to the buckle plate (10) to reset the buckle plate (10); the pressing button (9) is movably connected with the buckle plate (10), and the buckle plate (10) can be driven to rotate against the elastic force of the first elastic member by pressing the pressing button (9).

8. The overcap assembly of claim 2, wherein, A pressing and springing structure (11) is further arranged, the pressing and springing structure (11) comprises a pressing piece (1101) which is hinged to the frame body (5), and the end of the pressing piece (1101) is provided with a guide inclined surface (11011); A second elastic member (1102) is arranged between the pressing piece (1101) and the frame body (5) and is used for providing a downward elastic force to the pressing piece (1101); The pressing piece (1101) is provided with a limiting part (11012), the limiting part (11012) is movably connected with the frame body (5) and is used for limiting the pressing piece (1101) from excessively rotating under the action of the second elastic member (1102).

9. The overcap assembly of claim 2, wherein, The frame body (5) is provided with a containing cavity (13), and the containing cavity (13) is provided with a control module (14); the shell (1) is provided with a control panel (15), and the control panel (15) is electrically connected with the control module (14).

10. A cooking apparatus characterized by, The cooking device comprises a base (16), an inner pot and the upper cover assembly according to any one of claims 1 to 9, the inner pot is arranged in the base (16), the upper cover assembly is hinged with the base (16) and can be covered on the base (16) to form a cooking cavity between the upper cover assembly and the inner pot.

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