Cooking equipment
By setting a closed coil with cross-winding on the outside of the inner pot of the electromagnetic heating cooking equipment, the magnetic field of the first coil is bound, and the problems of high material cost, difficult processing and magnetic leakage in the prior art are solved, and efficient heating and uniform mixing of ingredients are achieved.
Patent Information
- Application Number
- CN202421869994.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-02
AI Technical Summary
In existing electromagnetic heating and cooking equipment, structures such as magnetic stripes and magnetic isolation plates increase material cost and processing technology difficulty, and are prone to magnetic leakage at the bottom.
A cooking device is designed, and a first coil is arranged on the outside of the inner pot for heating, and a second coil is arranged on the outside of the inner pot as a closed coil. The wire winding direction of the second coil intersects with the first coil to bind the magnetic field of the first coil and prevent leakage of the magnetic field.
It effectively reduces the material cost and processing technology difficulty of cooking equipment, while avoiding the problem of magnetic leakage at the bottom, improving heating efficiency and uniformity of ingredients.
Smart Images
Figure CN222897339U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of electromagnetic heating technology, and in particular to a cooking device. Background Art
[0002] In related technologies, electromagnetic heating cooking equipment uses a coil disk to generate a magnetic field, which generates a heating current on the pot, thereby generating heat directly on the pot. The thermal efficiency is significantly higher than traditional heating methods.
[0003] For cooking equipment such as rice cookers, in order to reduce the risk of magnetic leakage at the bottom, it is necessary to set structures such as magnetic strips and magnetic isolation plates made of magnetic materials on the coil disk structure. These additional structures not only increase the additional material cost, but also increase the difficulty of the processing technology. Utility Model Content
[0004] The present application aims to at least solve the technical problem in the prior art or related art that structures such as magnetic strips and magnetic isolation plates increase additional material costs and processing difficulties.
[0005] To this end, the present application proposes a cooking device.
[0006] In view of this, the present application provides a cooking device, comprising: an inner pot; a first coil, the first coil is wound around the outside of the inner pot, and the first coil is used to heat the inner pot; a second coil, the second coil is arranged on the outside of the inner pot, the second coil is a closed coil, and the winding direction of at least part of the wire of the second coil intersects with the winding direction of the first coil.
[0007] In this technical solution, the cooking device includes, but is not limited to, rice cookers, electric soup cookers, and electric pressure cookers. The cooking device includes an inner pot for holding ingredients, such as rice and water. A first coil is wound around the outer side of the inner pot. This first coil is an active coil for heating the inner pot. A second coil is also disposed outside the inner pot. For example, the second coil can be located outside the first coil or between the first coil and the inner pot. This second coil is a passive, closed coil.
[0008] Exemplarily, the first coil is electrically connected to an excitation circuit of the cooking device. The excitation circuit periodically passes current into the first coil, causing the first coil to generate a magnetic field, which forms a heating current on the inner pot, thereby achieving electromagnetic heating.
[0009] Exemplarily, the first coil covers at least half of the outer surface of the inner pot.
[0010] Since the second coil is a closed coil, under the action of the magnetic field of the first coil, a current in the opposite direction to the current in the first coil will be generated in the second coil, thereby generating a small magnetic field in the opposite direction to the magnetic field generated by the first coil. At the same time, because the winding direction of the second coil at least partially intersects with the winding direction of the wire of the first coil, the small magnetic field generated by the second coil can overlap with part of the magnetic field generated by the first coil and offset the magnetic field strength in the overlapping area to a certain extent, thereby playing a role in binding the magnetic field generated by the first coil and preventing magnetic field leakage.
[0011] On this basis, the reverse magnetic field generated by the second coil can also make the magnetic field generated by the excitation coil have strong magnetic field areas (areas not weakened by the second coil) and weak magnetic field areas (areas weakened by the second coil). The strong magnetic field areas will form strong heat areas on the inner pot, and the weak magnetic field areas will form hot heat areas on the inner pot, thereby reducing the heat concentration on the inner pot.
[0012] Exemplarily, the second coil is arranged on the bottom wall of the inner pot. By arranging the second coil on the bottom wall of the inner pot, a heat-weakened area can be formed at the bottom of the pot, thereby reducing the heat concentration at the bottom of the pot and avoiding the problem of burnt bottom.
[0013] At the same time, hot and cold convection will be formed between the weak heat area and the strong heat area. The rice, water and other ingredients in the pot will also move under the action of hot and cold convection, so that the water-rice mixture can be fully stirred between the relatively hot area and the relatively cold area, so that the rice and water can be better mixed and heated, and at the same time, the ingredients in different temperature areas can be integrated with each other, thereby improving the heating effect of the cooking equipment.
[0014] The technical solution of the present application restrains the magnetic field of the excitation coil by setting a passive closed coil to prevent the magnetic field from leaking out, and does not require additional magnetic materials and magnetic isolation plates. It can effectively reduce the material cost of the cooking equipment and reduce the difficulty of the processing technology.
[0015] In addition, the cooking device in the above technical solution provided by this application may also have the following additional technical features:
[0016] In some technical solutions of the present application, optionally, the second coil includes a first area and a second area, the first area is located on the circumference of the inner pot, and the second area is located at the bottom of the inner pot.
[0017] In this technical solution, the second coil is a bent structure, and the first area of the second coil extends along the outer wall of the inner pot. At this time, the first area is located on the circumferential side between the coils. At the same time, the second coil is bent along the area where the side wall of the inner pot transitions to the bottom. The second area of the bent second coil is located at the bottom of the bracket assembly.
[0018] Exemplarily, the second coil is bent once, that is, the number of the first region and the number of the second region are both one.
[0019] Exemplarily, the second coil is bent twice, that is, the second region of the second coil passes through the bottom of the bracket assembly and the inner pot, and the two ends of the second coil are respectively formed into two first regions, and extend upward on both sides of the bracket assembly and the inner pot.
[0020] The technical solution of the present application is to arrange the second coil partially on the peripheral side of the bracket assembly and partially on the bottom of the bracket assembly, so that the second coil can weaken the magnetic field strength of the first coil in multiple directions, reduce the risk of magnetic leakage, and at the same time generate strong magnetic areas and weak magnetic areas in different directions, further improving the heating effect of the cooking equipment.
[0021] In some technical solutions of the present application, optionally, the second coil is located on a side of the first coil facing away from the inner pot, the number of the second coils is at least 2, and at least part of the wires of any two second coils cross each other.
[0022] In this technical solution, the cooking device is provided with two or more second coils, and each of the two second coils has some conductive wires that are arranged to cross each other.
[0023] Exemplarily, the number of second coils is two, and the two second coils are arranged in a "cross" shape, and both ends of each second coil are bent upward and located on both sides of the bracket assembly and the inner pot. The middle part of the second coil is the second area of the second coil, which runs through the bottom between the coils.
[0024] Exemplarily, the number of second coils is 3, and the 3 second coils are arranged in a "M" shape, and both ends of each second coil are bent upward and located on both sides of the bracket assembly and the inner pot. The middle part of the second coil is the second area of the second coil, which runs through the bottom between the coils.
[0025] The technical solution of the present application sets at least two second coils and crosses these second coils to form relatively cold and hot zones in the inner pot while avoiding magnetic leakage at the bottom of the cooking device, so that the food can convect in the inner pot and improve the cooking effect.
[0026] In some technical solutions of the present application, optionally, the number of the second coils is at least 3, and the at least 3 second coils are arranged at intervals along the circumference of the first coil.
[0027] In this technical solution, the cooking device is provided with three or more second coils. The second coils can be located at the bottom of the bracket assembly, or a part of them can be located at the bottom of the bracket assembly and another part can be located on the peripheral side of the bracket assembly. By providing at least three second coils, a complete and reliable shielding area can be formed outside the first coil, improving the magnetic leakage prevention effect.
[0028] Exemplarily, the number of second coils is three, and the three second coils are arranged in a "pin" shape at the bottom of the bracket assembly.
[0029] Exemplarily, the number of second coils is four. Among the four second coils, there are two groups of oppositely arranged second coils. The connection line of each group of oppositely arranged second coils passes through the central axis of the first coil, and the connection lines of the two groups of second coils are perpendicular to each other.
[0030] Through the technical solution of the present application, by providing at least three second coils, a complete and reliable shielding area can be formed outside the first coil, improving the magnetic leakage prevention effect. At the same time, the food ingredients can perform convective movement in the inner pot, improving the cooking effect.
[0031] In some technical solutions of the present application, optionally, a part of the wire of the first coil is wound around the peripheral side of the inner pot, and another part of the wire of the first coil is wound around the bottom of the inner pot.
[0032] In this technical solution, a part of the first coil is wound on the side wall of the inner pot to form a side wall coil, heating the inner pot from the side. Another part of the first coil is wound around the bottom of the inner pot to form a bottom coil, heating the inner pot from below. Exemplarily, a part of the second coil is located at the bottom of the inner pot, and another part is located at the side of the inner pot. By providing heating coils both on the side and at the bottom, the heating uniformity of the cooking device can be improved, thereby improving the cooking effect.
[0033] In some technical solutions of the present application, optionally, the first coil is wound around the bottom of the inner pot.
[0034] In this technical solution, the first coil is wound around the bottom of the inner pot to form a bottom coil. Exemplarily, the first coil can be a complete large coil, and the first coil covers at least half of the area of the bottom. Exemplarily, the first coil can also be multiple small coils arranged at the bottom of the inner pot, and the multiple small coils are arranged at intervals along the circumference of the inner pot. Exemplarily, the second coil is arranged at the bottom of the inner pot.
[0035] Exemplarily, when the first coil is a complete large coil, the second coils can be arranged at intervals along the circumference of the inner pot. Exemplarily, when the first coil is multiple small coils arranged at intervals along the circumference of the inner pot, the second coils can be arranged in the pore areas between two adjacent first coils.
[0036] The present application adds a passive coil on the basis of the active heating coil at the bottom, which can restrain the magnetic field of the coil and prevent magnetic leakage at the bottom.
[0037] In some technical solutions of the present application, optionally, the cooking device further includes: a bracket assembly, the bracket assembly includes a accommodating cavity, the inner pot is arranged in the accommodating cavity, and the first coil is wound around the bracket assembly.
[0038] In this technical solution, the cooking device includes a support assembly, which includes a receiving cavity, and an inner pot is disposed within the receiving cavity. For example, the receiving cavity includes an opening, through which the inner pot enters the receiving cavity and is capable of remaining stable in a specific position and preventing movement relative to the support assembly. The opening is located at the top of the support assembly, and the side of the support assembly opposite the opening is the bottom.
[0039] Exemplarily, a portion of the first coil is wound around the circumference of the support assembly and covers at least a portion of the inner pot in the height direction, thereby heating the inner pot from the side. Another portion of the first coil is located at the bottom of the support assembly, thereby covering most of the bottom of the inner pot, thereby heating the inner pot from the bottom.
[0040] Exemplarily, a portion of the first coil is located around the bracket assembly, and another portion is located at the bottom of the bracket assembly. Exemplarily, the first coil located around the bracket assembly is a single-layer coil, i.e., having only one coil turn at the same height. The coil located at the bottom of the bracket assembly is a multi-layer coil, i.e., having multiple coil turns at the same height.
[0041] Since the bottom coil has a higher heating power, the magnetic field generated by this part of the coil when it is excited is also stronger. At the same time, since the magnetic field generated by the coil is distributed on both sides of the coil, and the inner pot is located above the bottom coil, the magnetic field generated below the bottom coil is more likely to leak out, resulting in the problem of bottom magnetic leakage. Therefore, placing the second coil at the bottom of the bracket assembly can effectively constrain the magnetic field of the bottom coil, weakening the magnetic field strength at the bottom of the coil, thereby avoiding bottom magnetic leakage. At the same time, compared with structures such as magnetic materials and magnetic isolation plates, the coil assembly has a more reliable ability to bind the magnetic field, and will not cause problems such as demagnetization failure due to problems with the material itself.
[0042] By setting the second coil at the bottom of the bracket assembly and below the first coil, the cooking device can effectively prevent the problem of magnetic leakage at the bottom without adding magnetic materials and magnetic isolation plates, thereby improving the safety and reliability of the cooking device.
[0043] The technical solution of the present application reduces the difficulty of winding by providing a bracket assembly and winding the first coil through the bracket assembly, thereby achieving semi-enclosed heating of the inner pot and improving the heating area and heating efficiency. At the same time, combined with the weakening effect of the second coil on the magnetic field of the first coil, relatively hot zones and relatively cold zones are formed on the inner pot, thereby promoting convection movement of food in the pot between the relatively hot zones and the relatively cold zones, thereby improving the heating effect of the cooking equipment.
[0044] In some technical solutions of the present application, optionally, the bracket assembly includes: a first bracket, the first bracket includes a first winding portion, and the first coil is wound around the first winding portion; a second bracket, the second bracket is connected to the first bracket, the second bracket includes a second winding portion, and the second coil is wound around the second winding portion.
[0045] In this technical solution, the bracket assembly includes a first bracket and a second bracket, wherein the first bracket is a bowl-shaped structure, a receiving cavity is formed inside the first bracket, and the first bracket includes multiple layers of winding grooves, which are evenly distributed in the height direction of the first bracket, and a part of the winding grooves are located on the circumference of the inner pot, and the other part of the winding grooves are located at the bottom of the inner pot.
[0046] Exemplarily, only one turn of coil is wound in the winding groove located on the peripheral side of the inner pot, and multiple turns of coil are wound in the winding groove located at the bottom of the inner pot.
[0047] The second bracket is provided at the bottom of the first bracket and is connected to the first bracket. For example, the second bracket can be connected to the bottom wall of the first bracket by a connecting member such as a bolt. For example, in some possible embodiments, the number of second brackets corresponds to the number of second coils, that is, a second coil is wound around each second bracket. For example, in other possible embodiments, the number of second brackets is not less than the number of second coils, that is, a plurality of second brackets are preset at the bottom of the first bracket, and the second coils are wound around several of the second brackets according to different models of cooking equipment, so that different models of cooking equipment can use the same bracket assembly.
[0048] The present application provides a first bracket and a second bracket for winding the first coil and the second coil respectively, which helps to reduce the assembly difficulty during the production and assembly of the cooking equipment and improve production efficiency.
[0049] In some technical solutions of the present application, the first bracket and the second bracket are an integrated structure.
[0050] In this technical solution, the first bracket and the second bracket are integrally formed. Exemplarily, the first bracket and the second bracket are an integral plastic component. Exemplarily, the first bracket and the second bracket are an integral insulating plastic component. Exemplarily, the first bracket and the second bracket are an integral insulating flame-retardant component.
[0051] In some embodiments, the number of the second stents is the same as the number of the second coils, thereby avoiding material waste.
[0052] In other embodiments, the number of second brackets is not less than the number of second coils. By designing redundant second brackets, when the number of second coils is subsequently adjusted, or when other models of cooking equipment with more second coils are produced, there is no need to redesign the bracket assembly, thereby improving the versatility of the product assembly.
[0053] The technical solution of the present application facilitates production by providing the first bracket and the second bracket as an integral part, which helps to reduce product production costs.
[0054] In some technical solutions of the present application, the cooking device further includes: a base, the base includes a mounting column; the first bracket further includes a mounting portion, the mounting portion is used to connect to the mounting column.
[0055] In this technical solution, the cooking device includes a base, and a bracket assembly is mounted on the base. The base is provided with mounting posts, illustratively, at least two of which are provided. A mounting portion corresponding to the mounting portion is provided on the first portion. Exemplarily, the top of the mounting portion includes a screw hole, and the mounting portion includes a through hole. During assembly, a bolt is passed through the through hole of the mounting portion and then screwed into the screw hole of the mounting post, thereby securing the bracket assembly to the base.
[0056] For example, when the mounting portion is connected to the mounting column and installed together, a gap is left between the bracket assembly and the body of the base, thereby preventing the bottom coil from contacting the base and reserving heat dissipation space for the bottom coil.
[0057] The technical solution of the present application connects the base and the bracket assembly through the mounting portion, which facilitates assembly and can reserve sufficient installation and heat dissipation space for the coil assembly, thereby reducing the complexity of the assembly process of the cooking equipment.
[0058] In some technical solutions of the present application, optionally, the cooking device further includes: a shell, the shell is connected to the base, and the bracket assembly is located inside the shell; and a cover, the cover is connected to the shell in an openable and closable manner.
[0059] In this technical solution, the cooking device includes a housing and a lid. The bottom of the housing is connected to the base, and the housing and the base enclose a mounting cavity, in which the bracket assembly is disposed. The lid is connected to the top of the housing in an openable and closable manner. When the lid is open, the opening of the accommodating cavity is exposed, allowing the user to remove and place the inner pot. When the lid is closed, the opening of the accommodating cavity is covered by the lid. At this time, if the inner pot is in a preset position in the accommodating cavity, the inner pot is also in a sealed state.
[0060] The technical solution of the present application forms the exposed surface of the cooking device by providing a shell and a cover, which can wrap the internal components of the cooking device and improve the reliability and aesthetics of the cooking device. BRIEF DESCRIPTION OF THE DRAWINGS
[0061] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0062] Figure 1 A schematic structural diagram of a cooking device according to some embodiments of the present application is shown;
[0063] Figure 2 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0064] Figure 3 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0065] Figure 4 for Figure 3 A partial enlarged view of the first coil and the second coil at position A is shown;
[0066] Figure 5 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0067] Figure 6 for Figure 5 A partial enlarged view of the first coil and the second coil at position B is shown;
[0068] Figure 7 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0069] Figure 8 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0070] Figure 9 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0071] Figure 10 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0072] Figure 11 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0073] Figure 12 for Figure 11 A partial enlarged view of the first coil and the second coil at position C is shown;
[0074] Figure 13A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0075] Figure 14 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown;
[0076] Figure 15 A schematic diagram showing the magnetic field of the first coil and the second coil in some embodiments of the present application is shown;
[0077] Figure 16 A schematic structural diagram of a bracket assembly according to some embodiments of the present application is shown.
[0078] Reference numerals:
[0079] 100 cooking device, 102 bracket assembly, 1022 accommodating cavity, 1024 opening, 1026 first bracket, 10262 mounting portion, 10264 first winding portion, 1028 second bracket, 10282 second winding portion, 104 first coil, 106 second coil, 1062 first area, 1064 second area, 108 base, 1082 mounting column, 110 shell, 112 cover, 114 inner pot. DETAILED DESCRIPTION
[0080] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.
[0081] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.
[0082] Refer to the following Figures 1 to 16 The present invention describes a cooking device provided according to some embodiments of the present application.
[0083] In some embodiments of the present application, a cooking device is provided. Figure 1 shows a schematic structural diagram of a cooking device in some embodiments of the present application, Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 13 and Figure 14 A schematic diagram showing a first coil and a second coil in some embodiments of the present application is shown. Figure 4 for Figure 3 The first coil and the second coil are shown in a partially enlarged view at A. Figure 6 for Figure 5 The first coil and the second coil are shown in a partially enlarged view at B. Figure 12 for Figure 11 A partial enlarged view of the first coil and the second coil at position C is shown.
[0084] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 As shown, the cooking device 100 includes:
[0085] Inner pot 114; first coil 104, first coil 104 is wound around the outside of inner pot 114, and first coil 104 is used to heat inner pot 114; second coil 106, second coil 106 is arranged outside inner pot 114, second coil 106 is a closed coil, and the winding direction of at least part of the wire of second coil 106 intersects with the winding direction of first coil 104.
[0086] In this embodiment, the cooking device 100 includes, but is not limited to, an electric rice cooker, an electric soup cooker, and an electric pressure cooker. The cooking device 100 includes an inner pot 114 for holding ingredients, such as rice and water. A first coil 104 is wound around the outside of the inner pot 114. This first coil 104 is an active coil for heating the inner pot 114. A second coil 106 is also disposed outside the inner pot 114. For example, the second coil 106 can be located outside the first coil 104 or between the first coil 104 and the inner pot 114. This second coil 106 is a passive, closed coil.
[0087] Exemplarily, the first coil 104 is electrically connected to the excitation circuit of the cooking device 100. The excitation circuit periodically passes current into the first coil 104, causing the first coil 104 to generate a magnetic field, which forms a heating current on the inner pot 114, thereby achieving electromagnetic heating.
[0088] Exemplarily, the first coil 104 covers at least half of the outer surface of the inner pot 114 .
[0089] Figure 15 Schematic diagram of the magnetic field of the first coil and the second coil in some embodiments of the present application is shown. Figure 15As shown, N and S indicate the north pole and south pole of the magnetic field, respectively. Since the second coil 106 is a closed coil, under the action of the magnetic field of the first coil 104, a current opposite to the current in the first coil 104 will be generated in the second coil 106, thereby generating a small magnetic field opposite to the magnetic field generated by the first coil 104. At the same time, because the winding direction of the second coil 106 at least partially intersects with the winding direction of the wire of the first coil 104 in the winding direction, the small magnetic field generated by the second coil 106 can overlap with a part of the magnetic field generated by the first coil 104 and offset the magnetic field strength in the overlapping area to a certain extent, thereby restraining the magnetic field generated by the first coil 104 and preventing magnetic field leakage.
[0090] On this basis, if Figure 13 and Figure 14 As shown, the reverse magnetic field generated by the second coil 106 can also cause the presence of a strong magnetic field region (the region not weakened by the second coil 106) and a weak magnetic field region (the region weakened by the second coil 106) in the magnetic field generated by the excitation coil. The strong magnetic field region will form a strong heat area on the inner pot, and the weak magnetic field region will form a heat hot area on the inner pot 114, thereby reducing the heat concentration on the inner pot.
[0091] Exemplarily, the second coil 106 is arranged on the bottom wall of the inner pot 114. By arranging the second coil 106 on the bottom wall of the inner pot 114, a heat-weakened area can be formed at the bottom of the pot, reducing the heat concentration at the bottom of the pot and avoiding the problem of burnt bottom.
[0092] Figure 13 The arrow a in the figure shows the weak magnetic field area. Figure 14 The arrow b in FIG. 1 shows a strong magnetic field region, which causes the magnetic field acting on the inner pot 114 to have an uneven distribution of intensity.
[0093] At the same time, hot and cold convection will be formed between the weak heat area and the strong heat area. The rice, water and other ingredients in the pot will also move under the action of hot and cold convection, so that the water-rice mixture can be fully stirred between the relatively hot area and the relatively cold area, so that the rice and water can be better mixed and heated, and at the same time, the ingredients in different temperature areas can be integrated with each other, thereby improving the heating effect of the cooking equipment.
[0094] The embodiment of the present application sets a passive closed coil to constrain the magnetic field of the excitation coil to prevent the magnetic field from leaking, and does not require additional magnetic materials and magnetic isolation plates, which can effectively reduce the material cost of the cooking device 100 and reduce the difficulty of the processing technology.
[0095] In some embodiments of the present application, Figure 7 and Figure 9As shown, the second coil 106 includes a first region 1062 and a second region 1064 . The first region 1062 is located on the circumferential side of the support assembly 102 , and the second region 1064 is located on the bottom of the support assembly 102 .
[0096] In this embodiment, the second coil 106 is a bent structure, and the first area 1062 of the second coil 106 extends along the outer wall of the inner pot 114. At this time, the first area 1062 is located on the circumferential side between the coils. At the same time, the second coil 106 is bent along the area where the side wall of the inner pot 114 transitions to the bottom. After bending, the second area 1064 of the second coil 106 is located at the bottom of the bracket assembly 102.
[0097] Exemplarily, the second coil 106 is bent once, that is, the number of the first region 1062 and the number of the second region 1064 are both one.
[0098] Exemplarily, the second coil 106 is bent twice, that is, the second area 1064 of the second coil 106 passes through the bottom of the bracket assembly 102 and the inner pot 114, and the two ends of the second coil 106 are respectively formed into two first areas 1062, and extend upward on both sides of the bracket assembly 102 and the inner pot 114.
[0099] In the embodiment of the present application, the second coil 106 is partially located on the peripheral side of the bracket assembly 102 and partially located at the bottom of the bracket assembly, so that the second coil 106 can weaken the magnetic field strength of the first coil 104 in multiple directions, reduce the risk of magnetic leakage, and at the same time generate strong magnetic regions and weak magnetic regions in different directions, further improving the heating effect of the cooking device 100.
[0100] In some embodiments of the present application, optionally, as Figure 9 、 Figure 10 and Figure 11 As shown, the number of the second coils 106 is at least two, and at least part of the conductive wires of any two second coils 106 cross each other.
[0101] In this embodiment, the cooking device 100 is provided with two or more second coils 106 , and each of the two second coils 106 has some conductive wires that cross each other.
[0102] For example, Figure 9 and Figure 11 As shown, there are two second coils 106, which are arranged in a "cross" shape, and both ends of each second coil 106 are bent upward and located on both sides of the bracket assembly 102 and the inner pot 114. The middle part of the second coil 106 is the second area 1064 of the second coil 106, which runs through the bottom between the coils.
[0103] Exemplarily, the number of the second coils 106 is three. The three second coils 106 are arranged in a cross shape like the Chinese character "米" (rice character). Both ends of each second coil 106 are bent upward and located on both sides of the support assembly 102 and the inner pot 114. The middle part of the second coil 106, that is, the second region 1064 of the second coil 106, penetrates the bottom between the coils.
[0104] In the embodiment of the present application, by providing at least two second coils 106 and arranging these second coils 106 in a cross shape, a relatively cold zone and a relatively hot zone can be formed in the inner pot 114 on the premise of avoiding magnetic leakage at the bottom of the cooking device 100, enabling the food materials to perform convection movement in the inner pot 114 and improving the cooking effect.
[0105] In some embodiments of the present application, optionally, as Figure 2 、 Figure 7 and Figure 8 shown, the number of the second coils 106 is at least three, and at least three second coils 106 are arranged at intervals along the circumferential direction of the first coil 104. Figure 2 The arrow X in
[0106] shows the circumferential direction of the first coil 104. In this embodiment, the cooking device 100 is provided with three or more second coils 106. The second coils 106 can be located at the bottom of the support assembly 102, or a part of them can be located at the bottom of the support assembly 102 and another part can be located on the circumferential side of the support assembly 102. By providing at least three second coils 106, a complete and reliable shielding zone can be formed outside the first coil 104, improving the anti-magnetic leakage effect.
[0107] Exemplarily, the number of the second coils 106 is three, and the three second coils 106 are arranged in a "pin" character shape at the bottom of the support assembly 102.
[0108] Exemplarily, the number of the second coils 106 is four. Among the four second coils 106, there are two sets of relatively arranged second coils 106. The connection line of each set of relatively arranged second coils 106 passes through the central axis of the first coil 104, and the connection lines between the two sets of second coils 106 are perpendicular to each other.
[0109] In the embodiment of the present application, by providing at least three second coils 106, a complete and reliable shielding zone can be formed outside the first coil 104, improving the anti-magnetic leakage effect, and at the same time enabling the food materials to perform convection movement in the inner pot 114 and improving the cooking effect.
[0110] In some technical solutions of the present application, optionally, a part of the wire of the first coil 104 is wound around the circumferential side of the inner pot 114, and another part of the wire of the first coil 104 is wound around the bottom of the inner pot 114.
[0111] In this technical solution, a portion of the first coil 104 is wound around the sidewall of the inner pot 114, forming a sidewall coil, which heats the inner pot 114 from the side. Another portion of the first coil 104 is wound around the bottom of the inner pot 114, forming a bottom coil, which heats the inner pot from below. For example, a portion of the second coil 106 is located at the bottom of the inner pot, while the other portion is located at the side of the inner pot 114. By placing heating coils on both the side and bottom, the cooking device can achieve more uniform heating, thereby improving cooking results.
[0112] In some technical solutions of the present application, optionally, the first coil 104 is wound around the bottom of the inner pot 114 .
[0113] In this technical solution, first coil 104 is wound around the bottom of inner pot 114 to form a bottom coil. Exemplarily, first coil 104 can be a single, large coil that covers at least half of the bottom area. Exemplarily, first coil 104 can also be composed of multiple small coils arranged at the bottom of inner pot 114, spaced apart along the circumference of inner pot 114. Exemplarily, second coil 106 is disposed at the bottom of inner pot 114.
[0114] For example, when the first coil 104 is a complete large coil, the second coil 106 can be spaced apart along the circumference of the inner pot 114. For example, when the first coil 104 is a plurality of small coils spaced apart along the circumference of the inner pot 114, the second coil 106 can be disposed in the gap area between two adjacent first coils 104.
[0115] The present application adds a passive coil on the basis of the active heating coil at the bottom, which can restrain the magnetic field of the coil and prevent magnetic leakage at the bottom.
[0116] In some embodiments of the present application, optionally, as Figure 1 As shown, the cooking device further includes: a support assembly 102 , the support assembly 102 includes a receiving cavity 1022 , the inner pot 114 is disposed in the receiving cavity 1022 , and the first coil 104 is wound around the support assembly 102 .
[0117] In this embodiment, the cooking device includes a support assembly 102, which includes a receiving cavity 1022. An inner pot 114 is disposed within the receiving cavity 1022. For example, the receiving cavity 1022 includes an opening 1024. The inner pot 114 enters the receiving cavity 1022 through the opening 1024 and is able to remain stable in a specific position and not move relative to the support assembly 102. The opening 1024 is located at the top of the support assembly 102, and the side of the support assembly 102 opposite the opening 1024 is the bottom.
[0118] Illustratively, a portion of the first coil 104 is wound around the circumference of the support assembly 102 and covers at least a portion of the inner pot 114 in the height direction, thereby heating the inner pot 114 from the side. Another portion of the first coil 104 is located at the bottom of the support assembly, thereby covering most of the bottom of the inner pot 114, thereby heating the inner pot 114 from the bottom.
[0119] Exemplarily, a portion of the first coil 104 is located around the support assembly 102, and another portion is located at the bottom of the support assembly 102. Exemplarily, the first coil 104 located around the support assembly 102 is a single-layer coil, i.e., it has only one coil turn at the same height. The coil located at the bottom of the support assembly 102 is a multi-layer coil, i.e., it can have multiple coil turns at the same height.
[0120] Because the bottom coil has a higher heating power, the magnetic field generated by this part of the coil when excited is also stronger. At the same time, because the magnetic field generated by the coil is distributed on both sides of the coil, and the inner pot 114 is located above the bottom coil, the magnetic field generated below the bottom coil is more likely to leak out, causing the problem of bottom magnetic leakage. Therefore, placing the second coil 106 at the bottom of the bracket assembly 102 can effectively constrain the magnetic field of the bottom coil, weakening the magnetic field strength at the bottom of the coil, thereby avoiding bottom magnetic leakage. At the same time, compared with structures such as magnetic materials and magnetic isolation plates, the coil assembly has a more reliable ability to bind the magnetic field and will not cause demagnetization failures due to problems with the material itself.
[0121] In the embodiment of the present application, the second coil 106 is arranged at the bottom of the bracket assembly 102 and below the first coil 104, so that the cooking device 100 can effectively prevent the problem of magnetic leakage at the bottom without adding magnetic materials and magnetic isolation plates, thereby improving the safety and reliability of the cooking device 100.
[0122] The embodiment of the present application provides a bracket assembly 102, and the first coil 104 is wound around the bracket assembly 102, which can reduce the difficulty of winding, realize semi-enclosed heating of the inner pot 114, and improve the heating area and heating efficiency. At the same time, combined with the weakening effect of the second coil 106 on the magnetic field of the first coil 104, relatively hot areas and relatively cold areas are formed on the inner pot 114, thereby promoting convection movement of food in the pot between the relatively hot areas and the relatively hot areas, thereby improving the heating effect of the cooking device 100.
[0123] In some embodiments of the present application, optionally, Figure 16 Schematic diagrams of the structure of the bracket assembly of some embodiments of the present application are shown. Figure 16As shown, the bracket assembly 102 includes: a first bracket 1026, the first bracket 1026 includes a first winding portion 10264, and the first coil 104 is wound on the first winding portion 10264; a second bracket 1028, the second bracket 1028 is connected to the first bracket 1026, the second bracket 1028 includes a second winding portion 10282, and the second coil 106 is wound on the second winding portion 10282.
[0124] In this embodiment, the bracket assembly 102 includes a first bracket 1026 and a second bracket 1028, wherein the first bracket 1026 is a bowl-shaped structure, and a accommodating cavity 1022 is formed inside the first bracket 1026. The first bracket 1026 includes a plurality of layers of winding grooves, which are evenly distributed in the height direction of the first bracket 1026, and a part of the winding grooves are located on the peripheral side of the inner pot 114, and the other part of the winding grooves are located at the bottom of the inner pot 114.
[0125] For example, only one turn of coil is wound in the winding groove located on the peripheral side of the inner pot 114 , and multiple turns of coil are wound in the winding groove located at the bottom of the inner pot 114 .
[0126] The second bracket 1028 is provided at the bottom of the first bracket 1026 and is connected to the first bracket 1026. For example, the second bracket 1028 can be connected to the bottom wall of the first bracket 1026 by a connecting member such as a bolt. For example, in some possible embodiments, the number of second brackets 1028 corresponds to the number of second coils 106, that is, one second coil 106 is wound around each second bracket 1028. For example, in other possible embodiments, the number of second brackets 1028 is not less than the number of second coils 106, that is, a plurality of second brackets 1028 are preset at the bottom of the first bracket 1026, and the second coil 106 is wound around several of the second brackets 1028 according to different models of the cooking device 100, so that different models of cooking devices 100 can use the same bracket assembly 102.
[0127] The present application provides a first bracket 1026 and a second bracket 1028 for winding the first coil 104 and the second coil 106 respectively, which helps to reduce the assembly difficulty during the production and assembly of the cooking device 100 and improve production efficiency.
[0128] In some embodiments of the present application, the first bracket 1026 and the second bracket 1028 are an integral structure.
[0129] In this embodiment, the first bracket 1026 and the second bracket 1028 are integrally formed. Exemplarily, the first bracket 1026 and the second bracket 1028 are a one-piece plastic component. Exemplarily, the first bracket 1026 and the second bracket 1028 are a one-piece insulating plastic component. Exemplarily, the first bracket 1026 and the second bracket 1028 are an one-piece insulating flame-retardant component.
[0130] In some embodiments, the number of second brackets 1028 is the same as the number of second coils 106 , thereby avoiding material waste.
[0131] In other embodiments, the number of second brackets 1028 is not less than the number of second coils 106. By designing redundant second brackets 1028, when the number of second coils 106 is subsequently adjusted, or when other models of cooking devices 100 with more second coils 106 are produced, there is no need to redesign the mold of the bracket assembly 102, which can improve the versatility of the product components.
[0132] In the embodiment of the present application, the first bracket 1026 and the second bracket 1028 are integrally formed, which facilitates production and helps reduce product production costs.
[0133] In some embodiments of the present application, optionally, as Figure 1 As shown, the cooking device 100 further includes: a base 108 , the base 108 includes a mounting post 1082 ; the first bracket 1026 further includes a mounting portion 10262 , the mounting portion 10262 is used to connect to the mounting post 1082 .
[0134] In this embodiment, the cooking device 100 includes a base 108, with the bracket assembly 102 mounted on the base 108. The base 108 is provided with mounting posts 1082, illustratively, at least two of which are provided. A mounting portion 10262 corresponding to the mounting portion 10262 is provided on the first portion. The mounting portion 10262 illustratively includes a screw hole at its top, and the mounting portion 10262 includes a through hole. During assembly, a bolt is passed through the through hole of the mounting portion 10262 and then screwed into the screw hole of the mounting post 1082, thereby securing the bracket assembly 102 to the base 108.
[0135] For example, when the mounting portion 10262 is connected and installed with the mounting post 1082 , a gap is left between the bracket assembly 102 and the body of the base 108 , thereby preventing the bottom coil from contacting the base 108 and reserving heat dissipation space for the bottom coil.
[0136] The embodiment of the present application connects the base 108 and the bracket assembly 102 through the mounting portion 10262 , which facilitates assembly and can reserve sufficient installation and heat dissipation space for the coil assembly, thereby reducing the complexity of the assembly process of the cooking device 100 .
[0137] In some embodiments of the present application, optionally, as Figure 1 As shown, the cooking device 100 further includes: a shell 110 , which is connected to the base 108 , and the bracket assembly 102 is located in the shell 110 ; and a cover 112 , which is connected to the shell 110 in an openable and closable manner.
[0138] In this embodiment, the cooking device 100 includes a housing 110 and a lid 112. The bottom of the housing 110 is connected to the base 108, and the housing 110 and the base 108 enclose a mounting cavity, within which the bracket assembly 102 is disposed. The lid 112 is connected to the top of the housing 110 in an openable and closable manner. When the lid 112 is open, an opening 1024 of the accommodating cavity 1022 is exposed, allowing a user to access the inner pot 114. When the lid 112 is closed, the opening 1024 of the accommodating cavity 1022 is covered by the lid 112. At this time, if the inner pot 114 is in a predetermined position within the accommodating cavity 1022, the inner pot 114 is also sealed.
[0139] In the embodiment of the present application, the shell 110 and the cover 112 are provided to form the exposed surface of the cooking device 100 , which can wrap the internal components of the cooking device 100 and improve the reliability and aesthetics of the cooking device 100 .
[0140] In the description of this application, the term "plurality" refers to two or more, unless otherwise expressly defined. The orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship described in the accompanying drawings, and is only for the convenience of describing this 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 this application; the terms "connect", "install", "fixed", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0141] In the description of this application, the terms "one embodiment," "some embodiments," "specific embodiments," etc., mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in any one or more embodiments or examples.
[0142] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A cooking device, characterized in that: include: Inner pot; a first coil, the first coil being wound around the outer side of the inner pot and used for heating the inner pot; The second coil is arranged on the outer side of the inner pot, the second coil is a closed coil, and the winding direction of at least part of the conducting wire of the second coil crosses the winding direction of the first coil.
2. The cooking device according to claim 1, characterized in that: The second coil includes a first area and a second area, the first area is located at a peripheral side of the inner pot, and the second area is located at a bottom of the inner pot.
3. The cooking device according to claim 1, characterized in that: The second coil is located on a side of the first coil away from the inner pot, the number of the second coils is at least 2, and at least part of the conductive wires of any two of the second coils cross each other.
4. The cooking device according to claim 1, characterized in that: The number of the second coils is at least 3, and the at least 3 second coils are arranged at intervals along the circumferential direction of the first coil.
5. The cooking device according to any one of claims 1 to 4, characterized in that: A portion of the conductive wire of the first coil is wound around the circumference of the inner pot, and another portion of the conductive wire of the first coil is wound around the bottom of the inner pot.
6. The cooking device according to any one of claims 1 to 4, characterized in that: The first coil is wound around the bottom of the inner pot.
7. The cooking device according to any one of claims 1 to 4, characterized in that: Also includes: A support assembly includes a containing cavity, the inner pot is arranged in the containing cavity, and the first coil is wound around the support assembly.
8. The cooking device according to claim 7, characterized in that The bracket assembly comprises: A first bracket, the first bracket comprising a first winding portion, the first coil being wound around the first winding portion; The second bracket is connected to the first bracket, the second bracket includes a second winding portion, and the second coil is wound around the second winding portion.
9. The cooking device according to claim 8, characterized in that The first bracket and the second bracket are an integrated structure.
10. The cooking device according to claim 8, characterized in that Also includes: a base, the base including a mounting post; The first bracket also includes a mounting portion, and the mounting portion is used to connect the mounting column.
11. The cooking device according to claim 10, characterized in that Also includes: A shell, the shell is connected to the base, and the bracket assembly is located in the shell; A cover body is connected to the shell in an openable and closable manner.