Chopping board

Abstract

The invention discloses a vegetable warming board. The vegetable warming board comprises a base, the lower surface of the panel is connected to the upper surface of the base in a sealed mode, a clamping part is arranged on the lower surface of the panel, the lower surface of the panel is partially sunken inwards to form a containing space, and the clamping part is located in the containing space; the flexible printed circuit heating plate is provided with a clamping hole, and when the flexible printed circuit heating plate is inserted into the accommodating space, the clamping part is inserted into the clamping hole, so that the flexible printed circuit heating plate is fixed relative to the panel; the vegetable warming board is simple in structure, stable in connection, good in sealing performance, even in heating and high in heating efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a food heat preservation device. Background Art

[0002] In daily life, people often encounter the situation that they cannot eat the food in time after it is cooked, causing the food to get cold. Traditional ways of keeping warm are limited. For example, using bowl and dish lids to cover the food has a short-term and insignificant insulation effect. Repeatedly reheating the dishes is not only cumbersome to operate, but also easily causes the food to lose its original fresh taste and nutrients. Therefore, warming plates came into being.

[0003] At present, the existing warming plates on the market are mainly divided into two categories, one is heating and heat preservation through resistance wire, and the other is heating and heat preservation through graphene film. For warming plates that use resistance wire for heating and heat preservation, simple resistance wire layout often cannot achieve comprehensive and uniform heating. The heat accumulation in the area near the resistance wire is obvious, and the temperature rises slowly in the area far away from the resistance wire, resulting in a large temperature gradient on the surface of the warming plate. It is not only difficult to ensure that the dishes are heated evenly, but also the food may be partially burnt due to local high temperature, affecting consumption. For warming plates that use graphene film for heating and heat preservation, although graphene has good thermal conductivity, due to its material properties and preparation process, when used for large-area heating, it is easy to have a slightly higher temperature in the center area and a relatively lower temperature in the edge area. For some delicate dishes that are sensitive to temperature, it may cause obvious differences in taste in different parts. In addition, both of the above two warming plates have the problem that the heating plate is difficult to fix and the heating efficiency is relatively slow.

[0004] To this end, the present invention provides a vegetable warming plate, which has a simple structure, stable connection, good sealing, uniform heating and high heating efficiency. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a vegetable warming plate, which has a simple structure, stable connection, good sealing, uniform heating and high heating efficiency.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A vegetable warming plate, comprising:

[0008] Base;

[0009] A panel, wherein the lower surface of the panel is sealed and connected to the upper surface of the base, a clamping portion is provided on the lower surface of the panel, and a portion of the lower surface of the panel is recessed inward to form an accommodation space, and the clamping portion is located in the accommodation space;

[0010] A flexible printed circuit heating board is provided with a clamping hole. When the flexible printed circuit heating board is inserted into the accommodating space, the clamping part is inserted into the clamping hole to fix the flexible printed circuit heating board relative to the panel.

[0011] As an improvement of the present invention, a heat insulating protrusion is provided on the lower side of the base, and the heat insulating protrusion is used to abut against the supporting surface.

[0012] As an improvement of the present invention, the thermal insulation protrusions include a first thermal insulation protrusion and a second thermal insulation protrusion, the first thermal insulation protrusion and the second thermal insulation protrusion are both quadrilateral sheet-shaped protrusions, and the first thermal insulation protrusion is distributed approximately perpendicular to the second thermal insulation protrusion.

[0013] As an improvement of the present invention, the vegetable warming board is a rectangular vegetable warming board, the heat-insulating protrusions are quadrilateral sheet-like protrusions, and the quadrilateral sheet-like protrusions are distributed in a criss-cross pattern.

[0014] As an improvement of the present invention, a control component is provided on the base, electrodes are provided on the flexible printed circuit heating plate, and the control component is electrically connected to the flexible printed circuit heating plate through the electrodes.

[0015] As an improvement of the present invention, the flexible printed circuit heating plate includes an insulating sleeve and a conductive layer encapsulated in the insulating sleeve.

[0016] As an improvement of the present invention, the conductive pattern on the conductive layer is a serpentine pattern.

[0017] As an improvement of the present invention, a mounting groove is provided on the base, and the control component is located in the mounting groove.

[0018] As an improvement of the present invention, a connecting groove is provided on the base, the electrode is located in the connecting groove, and the connecting groove is connected to the mounting groove.

[0019] As an improvement of the present invention, a notch is provided on the panel, the position and shape of the notch correspond to the setting of the control component, and the control component is at least partially located in the notch.

[0020] The beneficial effects of the present invention are as follows: through the arrangement of the above structure, a vegetable warming board with simple structure, stable connection, good sealing, uniform heating and high heating efficiency is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the vegetable warming plate of the present invention from one angle;

[0024] Figure 2 is a schematic diagram of the overall structure of the vegetable warming plate of the present invention from another angle;

[0025] Figure 3 It is a schematic diagram of the exploded structure of the vegetable warming plate of the present invention at one angle;

[0026] Figure 4 is a schematic diagram of the exploded structure of the vegetable warming plate of the present invention from another angle;

[0027] Figure 5 It is a partial exploded schematic diagram of the vegetable warming plate of the present invention;

[0028] Figure 6 is another partial exploded schematic diagram of the vegetable warming plate of the present invention;

[0029] Figure 7 is a partial cross-sectional view of the vegetable warming plate of the present invention;

[0030] Figure 8 yes Figure 7 Enlarged view of circle A;

[0031] Fig. 9 It is a bottom view of the vegetable warming plate of the present invention.

[0032] The detailed description of the reference numerals is as follows:

[0033] 1. Base; 2. Panel; 3. Flexible printed circuit heating plate; 31. Electrode; 21. Accommodation space; 11. Thermal insulation protrusion; 12. Control component; 32. Insulation sleeve; 33. Conductive layer; 34. Card hole; 22. Card connection part; 13. Installation groove; 14. Connection groove; 23. Notch; 111. First thermal insulation protrusion; 112. Second thermal insulation protrusion. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0040] Reference Figures 1 to 9 , a vegetable warming plate, comprising:

[0041] Base 1;

[0042] A panel 2, wherein the lower surface of the panel 2 is sealed and connected to the upper surface of the base 1, and a clamping portion 22 is provided on the lower surface of the panel 2, and a portion of the lower surface of the panel 2 is recessed inward to form an accommodating space 21, and the clamping portion 22 is located in the accommodating space 21;

[0043] The flexible printed circuit heating board 3 is provided with a clamping hole 34 . When the flexible printed circuit heating board 3 is inserted into the accommodating space 21 , the clamping portion 22 is inserted into the clamping hole 34 , so that the flexible printed circuit heating board 3 is fixed relative to the panel 2 .

[0044] Through the arrangement of the above structure, a vegetable warming plate with simple structure, stable connection, good sealing, uniform heating and high heating efficiency is provided;

[0045] By using the flexible printed circuit heating plate 3, the heating efficiency of the food warming plate of the present invention can be significantly improved, and the heating can be made uniform;

[0046] In addition, the insertion of the clamping portion 22 into the clamping hole 34 can also tightly connect the flexible printed circuit heating plate 3 and the panel 2, effectively preventing the flexible printed circuit heating plate 3 from being displaced during daily use, and maintaining good thermal conduction contact between the flexible printed circuit heating plate 3 and the panel 2, so that heat can be more efficiently transferred from the flexible printed circuit heating plate 3 to the panel 2, and then to the food.

[0047] The flexible printed circuit heating plate 3 is sealed and placed in the accommodating space 21, so that the flexible printed circuit heating plate 3 can be completely isolated from the outside world, thereby avoiding the risk of damage to the flexible printed circuit heating plate 3 caused by external factors.

[0048] Preferably, the base 1 and the panel 2 are both made of silicone material, and the base 1 and the panel 2 are connected by molding;

[0049] The food warming board made of silicone material has good flexibility, which makes it not easy to break or be damaged even if it is subjected to a certain degree of external force such as collision and extrusion during daily use; at the same time, silicone also has good heat insulation performance, which can effectively reduce the loss of heat to the external environment such as the desktop and improve the utilization rate of heat; and silicone material is relatively safe and non-toxic, meeting the relevant requirements for contact with food. In addition, the molded connection can also make the connection between the base 1 and the panel 2 fit seamlessly, which not only ensures the stability of the structure, but also prevents external dust, moisture, etc. from entering the interior of the food warming board and causing adverse effects on components such as the flexible printed circuit heating plate 3.

[0050] In this embodiment, a heat-insulating protrusion 11 is provided on the lower side of the base 1 , and the heat-insulating protrusion 11 is used to abut against a supporting surface.

[0051] The above-mentioned structure can avoid the risk of the high temperature of the warming plate damaging the supporting surface, and can also prevent heat from being transferred to the supporting surface, so that more heat is concentrated above the panel 2 of the warming plate for heating the dishes.

[0052] For example, when the supporting surface is a wooden tabletop, excessively high temperatures may cause the wood to dry, deform, or even burn; when the supporting surface is a plastic tabletop, excessively high temperatures may cause the plastic to soften and deform. At this time, isolation through the heat-insulating protrusions 11 can effectively prevent the high temperature of the warming plate from directly acting on the supporting surface, thereby protecting the integrity of the supporting surface such as the tabletop and extending the service life of the supporting surface.

[0053] In this embodiment, the thermal insulation protrusion 11 includes a first thermal insulation protrusion 111 and a second thermal insulation protrusion 112 . The first thermal insulation protrusion 111 and the second thermal insulation protrusion 112 are both quadrilateral sheet-shaped protrusions, and the first thermal insulation protrusion 111 is distributed approximately perpendicular to the second thermal insulation protrusion 112 .

[0054] By setting the above structure, multiple stable support points can be provided for the warming board. Compared with protrusions in only one direction, the vertically distributed first heat-insulating protrusions 111 and the second heat-insulating protrusions 112 can better adapt to uneven placement surfaces. Assuming that there are some small depressions or protrusions on the desktop where the warming board is placed, the vertically distributed heat-insulating protrusions 11 can balance the warming board through supports in different directions, reduce the shaking of the warming board, and make it more stable during use, and a complex gap structure is formed between the first heat-insulating protrusions 111 and the second heat-insulating protrusions 112. These gaps are conducive to the circulation of air. When heat is emitted from the bottom of the warming board, air can flow in these gaps, and air, as a medium with relatively poor thermal conductivity, can be better retained on the warming board by setting air channels, further improving the heating efficiency of the warming board and improving user experience.

[0055] In this embodiment, the food warming board is a rectangular food warming board, and the heat-insulating protrusions 11 are quadrilateral sheet-like protrusions, and the quadrilateral sheet-like protrusions are distributed in a criss-cross manner.

[0056] Through the arrangement of the above structure, the criss-cross distribution of the quadrilateral sheet-like protrusions can play a good role in heat insulation in both the length and width directions. Just like a woven net, this distribution method can form a relatively continuous heat insulation barrier, effectively blocking the heat from the bottom of the warming board to the placement plane. Regardless of whether the heat is transmitted from the long side or the short side of the warming board, the criss-cross insulation protrusions 11 can intercept it, reduce the heat loss, and improve the thermal insulation performance of the warming board. The criss-cross structure prevents the heat from being concentrated in a certain place at the bottom of the warming board, but is dispersed into the gaps between the protrusions. In this way, damage to the supporting surface such as the desktop where the warming board is placed can be avoided due to excessive local heat, such as preventing the desktop from being deformed or discolored due to excessive local heating. At the same time, in actual use, the warming board may be placed on various uneven surfaces. The criss-cross quadrilateral sheet-like protrusions can better adapt to this situation. These protrusions are like small supporting feet that can be adaptively adjusted according to the unevenness of the placement surface. For example, when the vegetable warming board is placed on a slightly tilted tabletop or a tabletop with small particles of debris, the criss-cross insulation protrusions 11 can ensure that the vegetable warming board remains in a horizontal and stable state through contact and support at different positions, thereby reducing the possibility of the vegetable warming board tipping over or shaking. Moreover, compared with simple linear or single-direction air channels, this air circulation method can more comprehensively cover the area at the bottom of the vegetable warming board, thereby achieving a better heat retention effect. When air flows in the criss-cross channels, since it is a medium with relatively poor thermal conductivity, by setting criss-cross air channels, heat can be better retained on the vegetable warming board, further improving the heating efficiency of the vegetable warming board.

[0057] In this embodiment, a control component 12 is disposed on the base 1 , and an electrode 31 is disposed on the flexible printed circuit heating plate 3 . The control component 12 is electrically connected to the flexible printed circuit heating plate 3 through the electrode 31 .

[0058] Through the above-mentioned structure, the user can conveniently adjust the heating temperature of the warming plate. The control component 12 can accurately control the heating power of the heating plate by adjusting parameters such as current or voltage according to the needs of the user. For example, the user can set the temperature of the warming plate to different modes such as the insulation gear and the heating gear according to different dishes or the length of the meal time through the control component 12, so as to achieve flexible control of the temperature of the warming dishes.

[0059] At the same time, the control component 12 can integrate multiple functions. For example, in addition to the basic temperature adjustment function, a timing function can also be set. The user can set the working time of the warming plate through the control component. When the time reaches the set value, the control component 12 automatically cuts off the power supply and stops the heating plate from working. This integrated control method is not only convenient for users to use, but also can improve the intelligence of the warming plate.

[0060] In this embodiment, the flexible printed circuit heating plate 3 includes an insulating sleeve 32 and a conductive layer 33 encapsulated in the insulating sleeve 32 .

[0061] Through the above-mentioned configuration, the flexible printed circuit heating plate 3 can obtain good conductivity and heating performance through the conductive layer 33, thereby improving the heating efficiency of the warm food plate, and the insulating sleeve 32 can also effectively prevent the risk of leakage and protect the conductive circuit on the conductive layer 33.

[0062] Preferably, the conductive layer 33 is a copper foil, the thickness of the copper foil is between 10 μm and 70 μm, and the material used for the insulating sleeve 32 is a polyimide film.

[0063] Copper is an excellent conductive material. Within the thickness range of 10μm-70μm, copper foil can effectively conduct current, so that the conductive layer 33 can generate enough heat when powered on to realize the heating function of the warming board. For example, when current passes through copper foil, according to Joule's law, copper foil of appropriate thickness can efficiently convert electrical energy into thermal energy while ensuring that its own resistance is not too large, thereby improving the heating efficiency of the warming board, and copper foil in this thickness range has good flexibility while maintaining a certain mechanical strength, which enables the flexible printed circuit heating plate 3 to adapt to a certain degree of bending and deformation; in the daily use of the warming board, the heating board may be deformed to a certain extent due to uneven weight of the placed items or slight external force collision, and copper foil of appropriate thickness can remain intact in this case and will not break easily, thereby ensuring the normal use of the warming board.

[0064] As a high-performance insulating material, polyimide film can effectively prevent the conductive layer 33 from leaking electricity, ensuring the safety of the warming plate during use. When the warming plate is working, the conductive layer 33 inside it is in a charged state. If there is no good insulating material for protection, leakage accidents may occur, causing harm to the user. The insulating performance of the polyimide film can isolate the conductive layer 33 from the outside world, preventing the user from contacting the charged part, and during the heating process of the warming plate, the temperature may reach a higher level, and the polyimide film will not decompose or melt due to high temperature, ensuring the protective effect of the insulating sleeve 32 on the conductive layer 33. At the same time, it also has good chemical stability. When it comes into contact with some common chemical substances (such as grease, soup, etc. in food), no chemical reaction will occur, avoiding the insulation performance degradation or conductive layer 33 damage due to chemical corrosion and other reasons, and it has good flexibility, can be bent and deformed with the heating plate without breaking, and can still be completely covered on the conductive layer 33, playing a protective role, and does not affect the flexibility of the heating plate.

[0065] In this embodiment, the conductive pattern on the conductive layer 33 is a serpentine pattern.

[0066] By setting the serpentine pattern, the length of the conductive line can be extended within a limited area to cover more area, thereby increasing the heating area, allowing the warming plate to heat more evenly, so that all parts of the dishes placed on the warming plate can get a better heating effect. In addition, the design of the serpentine pattern allows the heat to be evenly distributed in the area covered by the entire pattern when the current passes through, avoiding local overheating or overcooling, ensuring the consistency of the surface temperature of the warming plate, and better realizing the warming function.

[0067] In this embodiment, a mounting groove 13 is provided on the base 1 , and the control component 12 is located in the mounting groove 13 .

[0068] The above-mentioned structure provides a clear installation position for the control component 12, so that during the production and assembly process, workers can easily install the control component 12 at the designated position, simplifying the installation process and improving production efficiency. In addition, the size and shape of the installation groove 13 can be adapted according to the size and shape of the control component 12, which can ensure the stability of the control component 12 after installation and prevent it from shifting during the use of the warming plate.

[0069] In this embodiment, a connecting groove 14 is provided on the base 1 , the electrode 31 is located in the connecting groove 14 , and the connecting groove 14 is connected to the mounting groove 13 .

[0070] Through the arrangement of the above structure, a specific placement space is provided for the electrode 31, which prevents the electrode 31 and the connecting lines such as the wires connected thereto from being physically damaged by the outside world, and the electrode 31 is located in the connecting groove 14, which can also ensure that its position in the warming board is relatively fixed. During the long-term use of the warming board, the electrode 31 will not become loose or the connection with the control component 12 will not be poor due to factors such as vibration and shaking; at the same time, the structure of the connecting groove 14 connecting the mounting groove 13 provides a relatively closed and stable electrical environment for the connection between the electrode 31 and the control component 12, reducing the influence of external electromagnetic interference on the connecting line and the electrode 31, and also preventing the degradation of electrical performance due to factors such as moisture and dust.

[0071] In this embodiment, a notch 23 is provided on the panel 2 , the position and shape of the notch 23 are arranged corresponding to the control component 12 , and the control component 12 is at least partially located in the notch 23 .

[0072] The above-mentioned structure makes it convenient for users to operate the control component. Users can directly touch the operation interface of the control component, such as buttons, knobs or display screen, through the notch 23. For example, when the user needs to adjust the temperature of the warming plate or turn the warming plate on or off, there is no need to pick up the warming plate from the placement position. The control component can be easily operated directly on the panel 2 through the notch 23, which provides great convenience for the user.

[0073] As described above, one or more implementation methods are provided in combination with specific contents, and the specific implementation of the present invention is not limited to these descriptions. Any similarity or similarity with the method, structure, etc. of the present invention, or any technical deduction or replacement based on the concept of the present invention, shall be regarded as the protection scope of the present invention.

Claims

1. A food warming plate, characterized in that: include: Base (1); A panel (2), wherein the lower surface of the panel (2) is sealedly connected to the upper surface of the base (1), a clamping portion (22) is provided on the lower surface of the panel, and a portion of the lower surface of the panel (2) is recessed inwardly to form a receiving space (21), and the clamping portion (22) is located in the receiving space (21); A flexible printed circuit heating plate (3), wherein a clamping hole (34) is provided on the flexible printed circuit heating plate (3); when the flexible printed circuit heating plate (3) is inserted into the accommodating space (21), the clamping portion (22) is inserted into the clamping hole (34), so that the flexible printed circuit heating plate (3) is fixed relative to the panel (2).

2. The vegetable warming plate according to claim 1, characterized in that: A heat-insulating protrusion (11) is provided on the lower side of the base (1), and the heat-insulating protrusion (11) is used to abut against a supporting surface.

3. The vegetable warming plate according to claim 2, characterized in that: The thermal insulation protrusion (11) comprises a first thermal insulation protrusion (111) and a second thermal insulation protrusion (112); the first thermal insulation protrusion (111) and the second thermal insulation protrusion (112) are both quadrilateral sheet-shaped protrusions, and the first thermal insulation protrusion (111) is distributed approximately perpendicular to the second thermal insulation protrusion (112).

4. The vegetable warming plate according to claim 2, characterized in that: The vegetable warming board is a rectangular vegetable warming board, and the heat-insulating protrusions (11) are quadrilateral sheet-shaped protrusions, and the quadrilateral sheet-shaped protrusions are distributed in a crisscross manner.

5. The vegetable warming plate according to claim 1, characterized in that: The base (1) is provided with a control component (12), the flexible printed circuit heating plate (3) is provided with an electrode (31), and the control component (12) is electrically connected to the flexible printed circuit heating plate (3) via the electrode (31).

6. The vegetable warming plate according to claim 1, characterized in that: The flexible printed circuit heating plate (3) comprises an insulating sleeve (32) and a conductive layer (33) encapsulated in the insulating sleeve (32).

7. The vegetable warming plate according to claim 6, characterized in that: The conductive pattern on the conductive layer (33) is a serpentine pattern.

8. The vegetable warming plate according to claim 1, characterized in that: The base (1) is provided with a mounting groove (13), and the control component (12) is located in the mounting groove (13).

9. The vegetable warming plate according to claim 8, characterized in that: The base (1) is provided with a connection groove (14), the electrode (31) is located in the connection groove (14), and the connection groove (14) is connected to the installation groove (13).

10. The vegetable warming plate according to claim 5, characterized in that: The panel (2) is provided with a notch (23), the position and shape of the notch (23) being arranged corresponding to the control component (12), and the control component (12) is at least partially located in the notch (23).

Images