WO2019080632A1 - 电磁加热器具的多段控制线圈绕线结构及电磁加热器具 - Google Patents

电磁加热器具的多段控制线圈绕线结构及电磁加热器具

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Publication number
WO2019080632A1
WO2019080632A1 PCT/CN2018/102699 CN2018102699W WO2019080632A1 WO 2019080632 A1 WO2019080632 A1 WO 2019080632A1 CN 2018102699 W CN2018102699 W CN 2018102699W WO 2019080632 A1 WO2019080632 A1 WO 2019080632A1
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WO
WIPO (PCT)
Prior art keywords
coil
winding
wire winding
electromagnetic heating
rounded
Prior art date
Application number
PCT/CN2018/102699
Other languages
English (en)
French (fr)
Inventor
陈亮
陈冬冬
李锦彬
陈伟
高文超
高塬贵
成灿明
李振合
Original Assignee
格力电器（武汉）有限公司
珠海格力电器股份有限公司
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Publication date
Application filed by 格力电器（武汉）有限公司, 珠海格力电器股份有限公司 filed Critical 格力电器（武汉）有限公司
Publication of WO2019080632A1 publication Critical patent/WO2019080632A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/44—Coil arrangements having more than one coil or coil segment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the application relates to a multi-section control coil winding structure and an electromagnetic heating device of an electromagnetic heating device.
  • electromagnetic heating appliances are widely used in household life as cooking appliances.
  • Common electromagnetic heaters include rice cookers, electric pressure cookers, electric steamers and the like.
  • the rice cooker has a single heating method, and the electromagnetic coil at the bottom of the rice cooker is wound by a single-stage wire, and the heating of the bottom and the rounded portion of the inner pot is controlled by only one IGBT, and the side and top of the rice cooker are designed to be heated.
  • the wire is heated and the heating wire is controlled by a relay.
  • This rice cooker has the following defects:
  • the working power of the heating wire is generally around 50W, the power is relatively small, and the cooking effect of the rice is not improved much;
  • the present application provides a multi-segment control coil winding structure and an electromagnetic heating device for an electromagnetic heating device, the multi-segment control coil winding structure has more precise coil control, more uniform heating, and heating efficiency. Higher, long life and good safety.
  • the technical solution adopted in the present application is to design a multi-segment control coil winding structure of an electromagnetic heating device, comprising: a top reel assembly disposed on the top surface of the inner pot, and a side reel set on the outer circumference of the inner pot The assembly and the bottom reel assembly disposed at the bottom of the inner pot.
  • the bottom reel assembly includes: a bottom winding bracket disposed under the bottom surface of the inner pot, a rounded wire winding bracket disposed on the edge of the bottom winding bracket, a bottom coil wound around the bottom winding bracket, and a rounded corner
  • the rounded corner coil on the wire winding bracket, the shape of the rounded wire winding bracket matches the curvature of the bottom edge of the inner pot, and the bottom coil and the rounded corner coil are independently operated by the controller.
  • the top reel assembly includes: a top bobbin holder, a top coil wound around the top bobbin holder, and a side reel assembly including: a side bobbin holder and a side portion wound around the side bobbin holder
  • the coil, top coil and side coils are controlled by the controller to work together.
  • the bottom coil and the round corner coil are respectively connected to one IGBT and then connected in parallel to the controller, and the top coil and the side coil are connected in series and then connected to the controller through an IGBT.
  • the bottom coil and one end of the fillet coil are connected in parallel and the end uses a merged terminal.
  • the bottom winding bracket, the rounded wire winding bracket, the top winding bracket and the side winding bracket are uniformly provided with a winding grid for winding the coil.
  • the bottom winding bracket, the rounded wire winding bracket, the top winding bracket and the outlet end of the side winding bracket are provided with a cable fastening for the cable.
  • the bottom winding bracket, the rounded wire winding bracket, the top winding bracket and the side winding bracket are all injection molded parts.
  • the side winding bracket is fixed to the rounded wire winding bracket, and the side winding bracket, the rounded portion winding bracket and the bottom winding bracket are integrally provided.
  • the present application further provides an electromagnetic heating device having the above-mentioned multi-segment control coil winding structure, comprising: an inner pot, an inner cover disposed on a top surface of the inner pot, the top reel unit is mounted on the top surface of the inner cover, and the inner cover The bottom surface is provided with an insulating cover covering the inner pot.
  • a support ring is further disposed under the inner cover, one end of the inner cover is rotatably mounted on the support ring, and the bottom reel assembly is fixedly mounted on the support ring.
  • the electromagnetic heating device is a rice cooker, an electric pressure cooker or an electric steamer.
  • the bottom reeling disc is designed as a plurality of sections, which are separately controlled by the bottom coil and the rounded corner coil, and respectively have targeted heating on the bottom and the rounded portion of the inner pot, and the heating uniformity is good;
  • the top reel assembly and the side reel assembly are designed with coils, the heating power is large and variable, no need to be in contact with the sheet metal parts for heat transfer, the user does not touch directly, and the safety is good;
  • the bottom coil and the rounded corner coil are separately controlled by two IGBTs.
  • the top winding disc is connected in series with the side winding disc and then controlled by one IGBT.
  • the omnidirectional variable power heating, duty cycle heating, power The range of choice is wider, the heating efficiency is higher, and the cooking effect is better;
  • the winding wire assembly is designed with a winding grid, which can realize automatic winding, and at the same time, the outlet end is designed with a line buckle, and the wiring is simple and consistent;
  • the winding brackets matched with the electromagnetic coil are all injection molded parts, which meet the insulation requirements, have no electrical safety problems, and do not need to be grounded.
  • FIG. 1 is a schematic view showing the assembly of a winding structure of a preferred embodiment of the present application
  • FIG. 2 is a schematic view showing the winding structure splitting of the preferred embodiment of the present application.
  • FIG. 3 is a schematic structural view of a bottom reel assembly in the preferred embodiment of the present application.
  • Figure 4 is a schematic view showing the current direction of the bottom reel assembly in the preferred embodiment of the present application.
  • Figure 5 is a first schematic view showing the initial magnetic induction line direction of the bottom reel assembly in the preferred embodiment of the present application
  • Figure 6 is a second schematic view of the initial magnetic induction line direction of the bottom reel assembly in the preferred embodiment of the present application.
  • Figure 7 is a schematic structural view of a top reel assembly in the preferred embodiment of the present application.
  • Figure 8 is a schematic structural view of a side reel assembly in the preferred embodiment of the present application.
  • Figure 9 is a schematic view showing the initial magnetic induction line direction of the top reel assembly in the preferred embodiment of the present application.
  • Figure 10 is a schematic view showing the initial magnetic induction line direction of the side reel assembly in the preferred embodiment of the present application.
  • Figure 11 is a schematic view showing the winding manner of the bottom reel assembly in the preferred embodiment of the present application.
  • FIG. 12 is a schematic view showing the integrated structure of a bottom and side reel assembly in an embodiment of the present application.
  • FIG. 13 is a schematic view showing an initial magnetic induction line direction of a bottom reel assembly according to another embodiment of the present application.
  • FIG. 14 is a schematic view showing an initial magnetic line direction of a top reel assembly in another embodiment of the present application.
  • Figure 15 is a schematic view showing the initial magnetic induction line direction of the side reel assembly in another embodiment of the present application.
  • a preferred embodiment of the present application provides a multi-segment control coil winding structure comprising: a top reel assembly 1, a side reel assembly 2 and a bottom reel assembly 3, top
  • the reel assembly 1 is disposed on the top surface of the inner pot 4, the side reel assembly 2 is sleeved on the outer side of the inner pot 4, and the bottom reel unit 3 is disposed at the bottom of the inner pot 4.
  • the bottom reel assembly 3 includes a bottom bobbin 31, a rounded bobbin 32, a bottom coil 33 wound around the bottom bobbin 31, and a bobbin 32 wound around the fillet.
  • the upper rounded portion coil 34 is disposed in a flat shape below the bottom surface of the inner pot 4, and the rounded portion winding support 32 is disposed on the edge of the bottom winding support 31 and along the bottom edge of the inner pot 4.
  • the bottom reel assembly 3 wraps the bottom of the inner pot 4, and the bottom coil 33 and the round corner coil 34 are respectively connected to an IGBT and then connected in parallel to the controller, and are independently controlled by the controller to operate on the bottom of the inner pot 4
  • the heating is uniform with the rounded corners and the heating uniformity is good.
  • the current direction of the bottom coil 33 and the rounded portion coil 34 is as shown in FIG. 4, and the program is input to the controller in advance, and the bottom coil 33 and the rounded portion coil 34 can be alternately operated according to the program requirements, and the magnetics of the bottom bobbin assembly 3 are alternately operated.
  • the initial direction of the sense line is as shown in Figs. 5 and 6, and the initial direction of the magnetic line is ensured to point to the inner pot 4.
  • the bottom coil 33 and the current inlet end of the fillet coil 34 are connected in parallel, and the current inlet end is crimped and fixed by using a combined terminal A, which can reduce the number of lead wires, and the ports of the corresponding main boards can be shared. Save assembly space and improve assembly efficiency.
  • the top reel assembly 1 includes a top bobbin 11 and a top coil 12 wound around the top bobbin 11.
  • the top bobbin 11 is flat on the top surface of the inner pot 4.
  • the side reel assembly 2 includes a side bobbin 21, a side coil 22 wound around the side bobbin 21, and a side bobbin 21 in a cylindrical sleeve. 4 side outer ring.
  • the top coil 12 and the side coil 22 are connected in series and then connected to the controller through an IGBT, and the controller controls the unified operation.
  • the power level and the on-time of the top reel unit 1 and the side reel unit 2 are controlled by the controller.
  • the current is input and the output is generated at the output end after the top coil 12 is energized.
  • the initial direction of the sense line is directed toward the inner pot 4, the heating efficiency is higher, the magnetic leakage to the outside is less, and the electromagnetic magnetic line can simultaneously heat the inner pot 4, and the cooking effect on the upper surface of the inner pot 4 is improved significantly.
  • the initial direction of the magnetic induction line at the current inlet end and the outlet end of the side coil 22 is directed toward the inner pot 4, and the inner pot 4 is directly heated, and the heating is more uniform than the prior art. To ensure that the inner pot 4 is fully boiled, the heat loss is small, and the cooking effect on the upper surface of the inner pot 4 is also improved.
  • the bottom bobbin holder 31, the rounded portion bobbin holder 32, the top bobbin holder 11 and the side bobbin holder 21 are uniformly provided for winding the coil.
  • Winding grid the spacing of the winding grid needs to meet the requirements of no top line and running line.
  • the other end of the coil is fixed and the other end is finished by tooling, and the bottom winding unit 3 is wound.
  • the line mode is shown in Figure 11.
  • the outlets of the bottom winding bracket 31, the rounded wire winding bracket 32, the top winding bracket 11 and the side winding bracket 21 are provided with a wiring for the cable. After the coil is wound, the lead end is positioned by the wire buckle.
  • the bottom winding bracket 31, the rounded wire winding bracket 32, the top winding bracket 11 and the side winding bracket 21 are all injection molded parts, which meet the insulation requirements, have no electrical safety problems, and do not need to be grounded.
  • the side bobbin holder 21 is fixed to the rounded bobbin holder 32, the side bobbin holder 21, and the rounded portion.
  • the winding bracket 32 and the bottom winding bracket 31 are integrally provided.
  • the initial magnetic induction line direction generated by energizing the top reel assembly, the side reel assembly, and the bottom reel assembly is opposite to the preferred embodiment, and the magnetic line direction is as shown in FIG. 14,15,15.
  • the present application further provides an electromagnetic heating device having the above-mentioned multi-segment control coil winding structure, comprising: inner pot 4, inner cover 5, thermal insulation cover 6 and support ring 7, etc., inner cover 5
  • the support ring 7 is disposed on the top surface of the inner pot 4, and the support ring 7 is located below the inner cover 5.
  • One end of the inner cover 5 is rotatably mounted on the support ring 7, and the bottom reel unit 3 is fixedly mounted on the support ring 7.
  • the top reel assembly 1 is fixedly mounted on the top surface of the inner cover 5, and the thermal insulation cover 6 is fixedly mounted on the bottom surface of the inner cover 5. When the inner cover 5 is closed, the thermal insulation cover 6 covers the top surface of the inner pan 4.
  • the initial direction of the magnetic induction line generated after the top reel assembly 1 is energized is directed toward the thermal insulation cover 6, and the side reel assembly 2 and the bottom reel assembly 3 are energized.
  • the electromagnetic initial magnetic induction line direction is directed to the inner pot 4, and the inner pot 4 is directly heated, the heating is more uniform, the efficiency is higher, and the cooking performance of the inner pot 4 is obviously improved.
  • the electromagnetic heating device can be a rice cooker, an electric pressure cooker or an electric steamer and the like.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cookers (AREA)
  • General Induction Heating (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

一种电磁加热器具的多段控制线圈绕线结构及电磁加热器具，多段控制线圈绕线结构包括：顶部绕线盘组件（1）、侧部绕线盘组件（2）及底部绕线盘组件（3），底部绕线盘组件（3）包括：底部绕线支架（31）、设于底部绕线支架（31）边缘上的圆角部绕线支架（32）、绕在底部绕线支架（31）上的底部线圈（33）、绕在圆角部绕线支架（32）上的圆角部线圈（34），底部线圈（33）和圆角部线圈（34）由控制器控制分别独立工作；顶部绕线盘组件（1）包括：顶部绕线支架（11）、绕在顶部绕线支架（11）上的顶部线圈（12），侧部绕线盘组件（2）包括：侧部绕线支架（21）、绕在侧部绕线支架（21）上的侧部线圈（22），顶部线圈（12）和侧部线圈（22）由控制器控制统一工作。该方案具有控制精准、加热均匀、效率高且寿命长等优点。

Description

电磁加热器具的多段控制线圈绕线结构及电磁加热器具
相关申请
本申请要求2017年10月27日申请的，申请号为201711019261.8，名称为“电磁加热器具的多段控制线圈绕线结构及电磁加热器具”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及一种电磁加热器具的多段控制线圈绕线结构及电磁加热器具。
背景技术
随着科技水平的不断提高，电磁加热器具作为烹饪器具被广泛应用在家庭生活中，常见的电磁加热器具有电饭煲、电压力锅、电蒸锅等。以电饭煲为例，现有技术中电饭煲加热方式单一，电饭煲底部的电磁线圈使用单段线进行绕制，只通过一个IGBT同时控制内锅底部和圆角部的加热，电饭煲侧部、顶部设计发热丝进行加热，发热丝通过继电器控制。
这种电饭煲存在以下几个缺陷：
1、电磁线圈工作时对内锅的不同位置加热不均匀，米饭品质相对较差；
2、发热丝在工作过程中的功率无法进行智能调节，且采用继电器控制会使得电饭煲的寿命较短；
3、发热丝工作功率一般在50W左右，功率相对较小，对米饭蒸煮效果改善不大；
4、电磁线圈无结构限位，引出线过多、走线杂乱、不规范、一致性差；
5、使用发热丝需直接同钣金件贴紧接触后进行传热，用户可直接触碰到，存在电气安全的隐患，必须进行接地处理。
发明内容
为了解决现有技术中存在的上述缺陷，本申请提出一种电磁加热器具的多段控制线圈绕线结构及电磁加热器具，该多段控制线圈绕线结构具有线圈控制更精准、加热更均匀、加热效率更高、使用寿命长、安全性好等优点。
本申请采用的技术方案是，设计一种电磁加热器具的多段控制线圈绕线结构，包括：设于内锅顶面上的顶部绕线盘组件、套在内锅外圈的侧部绕线盘组件及设于内锅底部的底 部绕线盘组件。底部绕线盘组件包括：设于内锅底面下的底部绕线支架、设于底部绕线支架边缘上的圆角部绕线支架、绕在底部绕线支架上的底部线圈、绕在圆角部绕线支架上的圆角部线圈，圆角部绕线支架的形状与内锅底面边缘的弧度相匹配，底部线圈和圆角部线圈由控制器控制分别独立工作。
其中，顶部绕线盘组件包括：顶部绕线支架、绕在顶部绕线支架上的顶部线圈，侧部绕线盘组件包括：侧部绕线支架、绕在侧部绕线支架上的侧部线圈，顶部线圈和侧部线圈由控制器控制统一工作。
优选的，底部线圈和圆角部线圈各自连接一个IGBT后并联连接在控制器上，顶部线圈和侧部线圈串联后再通过一个IGBT连接在控制器上。
优选的，底部线圈和圆角部线圈的一端并联且该端使用合并端子。
优选的，底部绕线支架、圆角部绕线支架、顶部绕线支架及侧部绕线支架上都均匀设有用于绕制线圈的绕线栅格。
优选的，底部绕线支架、圆角部绕线支架、顶部绕线支架及侧部绕线支架的出线端均设有用于卡线的走线扣位。
优选的，底部绕线支架、圆角部绕线支架、顶部绕线支架及侧部绕线支架均为注塑件。
在一实施例中，侧部绕线支架固定在圆角部绕线支架上，侧部绕线支架、圆角部绕线支架及底部绕线支架设置为一体。
本申请还提出一种具有上述多段控制线圈绕线结构的电磁加热器具，包括：内锅、设于内锅顶面上的内盖，顶部绕线盘组件安装在内盖的顶面，内盖的底面设有覆盖内锅的保温盖板。
其中，内盖的下方还设有支撑环，内盖的一端可转动安装在支撑环上，底部绕线盘组件固定安装在支撑环上。
电磁加热器具为电饭煲、电压力锅或电蒸锅。
与现有技术相比，本申请具备以下优点：
1、底部绕线盘设计为多条多段，通过底部线圈和圆角部线圈分开控制，分别对内锅底部、圆角部有针对性的加热，加热均匀性好；
2、顶部绕线盘组件和侧部绕线盘组件设计线圈，加热功率大且可变，无需与钣金件贴紧接触传热，用户不会直接触碰到，安全性好；
3、底部线圈和圆角部线圈使用两个IGBT分别单独控制，顶部绕线盘与侧部绕线盘串联后使用1个IGBT统一控制，全方位的可变功率加热、占空比加热，功率选择的范围更广、加热效率更高，蒸煮效果好；
4、绕线盘组件均设计绕线栅格，可实现自动化绕线，同时出线端设计走线扣位，走线简洁、一致性好；
5、底部线圈和圆角部线圈的出线端使用合并端子，装配更便捷，节省装配空间；
6、与电磁线圈配合的绕线支架设计均为注塑件，满足绝缘要求，不存在电气安全的问题，且无需接地。
附图说明
下面结合实施例和附图对本申请进行详细说明，其中：
图1是本申请最佳实施例的绕线结构组装示意图；
图2是本申请最佳实施例的绕线结构拆分示意图；
图3是本申请最佳实施例中底部绕线盘组件的结构示意图；
图4是本申请最佳实施例中底部绕线盘组件的电流方向示意图；
图5是本申请最佳实施例中底部绕线盘组件的初始磁感线方向第一示意图；
图6是本申请最佳实施例中底部绕线盘组件的初始磁感线方向第二示意图；
图7是本申请最佳实施例中顶部绕线盘组件的结构示意图；
图8是本申请最佳实施例中侧部绕线盘组件的结构示意图；
图9是本申请最佳实施例中顶部绕线盘组件的初始磁感线方向示意图；
图10是本申请最佳实施例中侧部绕线盘组件的初始磁感线方向示意图；
图11是本申请最佳实施例中底部绕线盘组件的绕线方式示意图；
图12是本申请一实施例中底部、侧部绕线盘组件的一体化结构示意图；
图13是本申请另一实施例中底部绕线盘组件的初始磁感线方向示意图；
图14是本申请另一实施例中顶部绕线盘组件的初始磁感线方向示意图；
图15是本申请另一实施例中侧部绕线盘组件的初始磁感线方向示意图。
具体实施方式
如图1、2所示，本申请最佳实施例提出了一种多段控制线圈绕线结构，包括：顶部绕线盘组件1、侧部绕线盘组件2及底部绕线盘组件3，顶部绕线盘组件1设于内锅4的顶面上，侧部绕线盘组件2套在内锅4的侧面外圈，底部绕线盘组件3设于内锅4的底部。
如图3所示，底部绕线盘组件3包括：底部绕线支架31、圆角部绕线支架32、绕在底部绕线支架31上的底部线圈33、绕在圆角部绕线支架32上的圆角部线圈34，底部绕线支架31呈平板状设于内锅4的底面下方，圆角部绕线支架32设于底部绕线支架31边 缘上且沿内锅4底面边缘的弧度延伸，底部绕线盘组件3包裹内锅4的底部，底部线圈33和圆角部线圈34各自连接一个IGBT后并联连接在控制器上，由控制器控制分别独立工作，对内锅4的底部和圆角部有针对性的加热，加热均匀性好。
底部线圈33和圆角部线圈34的电流方向如图4所示，向控制器预先输入程序，底部线圈33和圆角部线圈34可根据程序要求进行交替工作，底部绕线盘组件3的磁感线初始方向如图5、6所示，保证磁感线的初始方向指向内锅4。如图4所示，底部线圈33和圆角部线圈34的电流入口端并联，该电流入口端使用一合并端子A进行压接固定，可减少引出线的数量，同时相应主板的端口可共用，节省装配空间、提高装配效率。
如图7所示，顶部绕线盘组件1包括：顶部绕线支架11、绕在顶部绕线支架11上的顶部线圈12，顶部绕线支架11呈平板状设于内锅4的顶面上方。如图8所示，侧部绕线盘组件2包括：侧部绕线支架21、绕在侧部绕线支架21上的侧部线圈22，侧部绕线支架21呈筒状套在内锅4的侧面外圈。顶部线圈12和侧部线圈22串联后再通过一个IGBT连接在控制器上，由控制器控制统一工作。
顶部绕线盘组件1和侧部绕线盘组件2的功率大小、开通时间由控制器进行控制，如图9所示，根据右手定则，顶部线圈12通电后电流入口端、出口端产生磁感线的初始方向朝向内锅4，加热效率更高，向外界漏磁少，电磁磁感线可同时加热内锅4，对内锅4上表面的米饭蒸煮效果改善明显。如图10所示，根据右手定则，侧部线圈22通电后电流入口端、出口端产生磁感线的初始方向朝向内锅4，直接对内锅4进行加热，加热较现有技术更均匀，确保内锅4中充分沸腾，热量损失少，同样对内锅4上表面的米饭蒸煮效果改善明显。
较优的，如图3、7、8所示，底部绕线支架31、圆角部绕线支架32、顶部绕线支架11及侧部绕线支架21上都均匀设有用于绕制线圈的绕线栅格，绕线栅格的间距大小需满足不会顶线、跑线的要求，进行自动绕线时，线圈一端固定后另一端使用工装绕制完成，底部绕线盘组件3的绕线方式如图11所示。为了使电磁加热器具的内部走线更整洁，底部绕线支架31、圆角部绕线支架32、顶部绕线支架11及侧部绕线支架21的出线端均设有用于卡线的走线扣位，线圈绕制完成后引出端通过走线扣位进行定位。
进一步的，底部绕线支架31、圆角部绕线支架32、顶部绕线支架11及侧部绕线支架21均为注塑件，满足绝缘要求，不存在电气安全的问题，且无需接地。
如图12所示，在一实施例中，为了减少零件数量及零件装配的累积公差，侧部绕线支架21固定在圆角部绕线支架32上，侧部绕线支架21、圆角部绕线支架32及底部绕线支架31设置为一体。在另一实施例中，可将顶部绕线盘组件、侧部绕线盘组件、底部绕 线盘组件通电产生的初始磁感线方向与最佳实施例相反，其磁感线方向如图13、14、15所示。
如图1、2所示，本申请还提出一种具有上述多段控制线圈绕线结构的电磁加热器具，包括：内锅4、内盖5、保温盖板6及支撑环7等，内盖5设于内锅4的顶面上，支撑环7位于内盖5的下方，内盖5的一端可转动安装在支撑环7上，底部绕线盘组件3固定安装在支撑环7上。顶部绕线盘组件1固定安装在内盖5的顶面，保温盖板6固定安装在内盖5的底面，内盖5合上时保温盖板6覆盖内锅4的顶面。如图5、6、9、10所示，顶部绕线盘组件1通电后产生的磁感线初始方向朝向保温盖板6，侧部绕线盘组件2及底部绕线盘组件3通电后产生的电磁初始磁感线方向均指向内锅4，直接对内锅4进行加热，加热更均匀、效率更高，明显改善内锅4的蒸煮性能。在实际应用中，电磁加热器具可为电饭煲、电压力锅或电蒸锅等其它同类电器。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (11)

  1. 一种电磁加热器具的多段控制线圈绕线结构，包括：设于内锅(4)顶面上的顶部绕线盘组件(1)、套在内锅(4)外圈的侧部绕线盘组件(2)及设于内锅(4)底部的底部绕线盘组件(3)，其特征在于，所述底部绕线盘组件(3)包括：设于内锅(4)底面下的底部绕线支架(31)、设于所述底部绕线支架(31)边缘上的圆角部绕线支架(32)、绕在所述底部绕线支架(31)上的底部线圈(33)、绕在所述圆角部绕线支架(32)上的圆角部线圈(34)，所述圆角部绕线支架(32)的形状与内锅(4)底面边缘的弧度相匹配，所述底部线圈(33)和圆角部线圈(34)由控制器控制分别独立工作。
  2. 如权利要求1所述的多段控制线圈绕线结构，其特征在于，所述顶部绕线盘组件(1)包括：顶部绕线支架(11)、绕在所述顶部绕线支架(11)上的顶部线圈(12)，所述侧部绕线盘组件(2)包括：侧部绕线支架(21)、绕在所述侧部绕线支架(21)上的侧部线圈(22)，所述顶部线圈(12)和侧部线圈(22)由控制器控制统一工作。
  3. 如权利要求2所述的多段控制线圈绕线结构，其特征在于，所述底部线圈(33)和圆角部线圈(34)各自连接一个IGBT后并联连接在所述控制器上，所述顶部线圈(12)和侧部线圈(22)串联后再通过一个IGBT连接在所述控制器上。
  4. 如权利要求1至3任一项所述的多段控制线圈绕线结构，其特征在于，所述底部线圈(33)和圆角部线圈(34)的一端并联且该端使用合并端子。
  5. 如权利要求2或3所述的多段控制线圈绕线结构，其特征在于，所述底部绕线支架(31)、圆角部绕线支架(32)、顶部绕线支架(11)及侧部绕线支架(21)上都均匀设有用于绕制线圈的绕线栅格。
  6. 如权利要求5所述的多段控制线圈绕线结构，其特征在于，所述底部绕线支架(31)、圆角部绕线支架(32)、顶部绕线支架(11)及侧部绕线支架(21)的出线端均设有用于卡线的走线扣位。
  7. 如权利要求2或3所述的多段控制线圈绕线结构，其特征在于，所述底部绕线支架(31)、圆角部绕线支架(32)、顶部绕线支架(11)及侧部绕线支架(21)均为注塑件。
  8. 如权利要求2或3所述的多段控制线圈绕线结构，其特征在于，所述侧部绕线支架(21)固定在所述圆角部绕线支架(32)上，所述侧部绕线支架(21)、圆角部绕线支架(32)及底部绕线支架(31)设置为一体。
  9. 一种具有权利要求1至8任一项所述多段控制线圈绕线结构的电磁加热器具，包括：内锅(4)、设于所述内锅(4)顶面上的内盖(5)，所述顶部绕线盘组件(1)安装在所述 内盖(5)的顶面，所述内盖(5)的底面设有覆盖所述内锅(4)的保温盖板(6)。
  10. 如权利要求9所述的电磁加热器具，其特征在于，所述内盖(5)的下方还设有支撑环(7)，所述内盖(5)的一端可转动安装在所述支撑环(7)上，所述底部绕线盘组件(3)固定安装在所述支撑环(7)上。
  11. 如权利要求9所述的电磁加热器具，其特征在于，所述电磁加热器具为电饭煲、电压力锅或电蒸锅。
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