WO2019014934A1 - 电磁加热线圈盘及电磁加热装置 - Google Patents

电磁加热线圈盘及电磁加热装置 Download PDF

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Publication number
WO2019014934A1
WO2019014934A1 PCT/CN2017/093910 CN2017093910W WO2019014934A1 WO 2019014934 A1 WO2019014934 A1 WO 2019014934A1 CN 2017093910 W CN2017093910 W CN 2017093910W WO 2019014934 A1 WO2019014934 A1 WO 2019014934A1
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WIPO (PCT)
Prior art keywords
coil
electromagnetic
winding
thermistor
coil disk
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PCT/CN2017/093910
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English (en)
French (fr)
Inventor
李永俊
陈晓峰
黄林建
黄千鑫
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深圳和而泰智能控制股份有限公司
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Application filed by 深圳和而泰智能控制股份有限公司 filed Critical 深圳和而泰智能控制股份有限公司
Priority to PCT/CN2017/093910 priority Critical patent/WO2019014934A1/zh
Priority to CN201780003837.3A priority patent/CN108513739A/zh
Publication of WO2019014934A1 publication Critical patent/WO2019014934A1/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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/4403—Constructional details
    • A47J31/441—Warming devices or supports for beverage containers
    • 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
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/02—Induction heating

Definitions

  • the embodiments of the present application relate to the field of electromagnetic heating, and in particular, to an electromagnetic heating coil disk and an electromagnetic heating device.
  • the electromagnetic heating device has high power and fast heating speed.
  • the bottom of the heating device is rapidly turned red, and the heat is transferred to the coil plate, which may cause damage to the coil disk, so it is necessary to prevent dry burning.
  • the existing protection scheme generally installs a temperature sensor in the central area of the coil disk to detect the temperature of the heater, and the most common temperature sensor is a negative temperature coefficient (NTC) thermistor of the glass package.
  • NTC negative temperature coefficient
  • thermistors contain certain iron components, they may be heated by induction, resulting in damage or inability to accurately detect the temperature at the bottom of the pan.
  • the coil plates are often damaged by high temperature before the anti-dry protection, because they are not protected in time. Greatly affected the safety and reliability of the product.
  • the commonly used solution is to add a shielding layer, or to make the thermistor away from the heating coil in a way that the coil disc has a large space available to ensure that the thermistor body is not heated.
  • the addition of the shielding layer increases the complexity of the processing process.
  • the latter method of spatial isolation requires the physical size of the coil disk to be large (the inner diameter of the coil is too small to cause the shielding magnetic strip to fail), and is not suitable for miniaturization and small and medium-sized. Power electromagnetic heating device.
  • the technical problem mainly solved by the embodiments of the present application is to provide an electromagnetic heating coil disk and an electromagnetic heating device, which can solve the problem that the thermistor body of the coil disk is easily heated by induction, and prevent the thermistor or the coil disk from being damaged by high temperature.
  • an electromagnetic heating coil disk comprising a coil chassis, an electromagnetic coil and a magnetic strip, wherein the coil chassis comprises a winding central region and a winding region, and a winding The area is provided with a wired slot, and the electromagnetic coil is wound around the line slot, and includes:
  • the thermistor is placed in the center of the winding and the thermistor is a ceramic package thermistor.
  • the coil disk further comprises:
  • the temperature control switch is disposed in a central area of the winding, and the temperature control switch is a ceramic package temperature control switch.
  • a ring inner baffle is disposed on the inner side of the winding area, and a outer baffle is disposed on the outer side, and a plurality of wire trough partitions are disposed between the inner baffle and the outer baffle, and the trough partition will wind the area Divided into several loop slots.
  • a fixing plate is disposed on an outer side of the central portion of the winding, and a receiving groove is disposed between the fixing plate and the inner baffle of the winding region;
  • the magnetic strip includes a front magnetic strip fixed in the receiving groove.
  • the magnetic strip further includes a bottom magnetic strip fixed to the back surface of the coil chassis extending from the inner side to the outer side of the winding area.
  • the electromagnetic coil is spirally wound around the linear groove, and the electromagnetic coils of two or more layers are overlapped up and down;
  • the electromagnetic coil is wound at least three times, and some or all of the electromagnetic coils located in the middle portion of the trunking are provided with at least one supplementary coil.
  • the electromagnetic coil is wound seven times, and the third coil and the fifth coil electromagnetic coil located in the middle portion of the slot are provided with a supplementary coil.
  • the embodiment of the present application further provides an electromagnetic heating device, including a power supply unit, a switch unit, and a microcontroller, and further comprising: a coil disk as described above;
  • the electromagnetic coil of the coil disk is connected to the microcontroller through the switch unit, and the thermistor of the coil disk is electrically connected to the microcontroller.
  • the temperature control switch of the coil disk is coupled between the power supply unit and the switch unit.
  • an embodiment of the present application further provides an electromagnetic heating coffee machine, including a coffee machine housing, and an electromagnetic heating device as described above.
  • the coil disk of the embodiment of the present application includes a coil chassis, an electromagnetic coil and a magnetic strip
  • the coil chassis includes a winding center region and a winding region, and further includes a thermistor. , set in the center of the winding, where the thermistor
  • the resistance is a ceramic package thermistor, which can solve the problem that the thermistor body of the coil disk is easily heated by induction, and the high temperature damage of the thermistor or the coil disk is prevented.
  • FIG. 1 is an exploded view showing the structure of an electromagnetic heating coil disk according to an embodiment of the present application
  • Figure 2 is a perspective view of the coil disk shown in Figure 1;
  • Figure 3 is a schematic view showing the winding method of the electromagnetic coil of the coil disk shown in Figure 1;
  • FIG. 4 is a schematic view showing the functional structure of an electromagnetic heating device according to an embodiment of the present application.
  • FIG. 1 is a perspective view showing the structure of an electromagnetic heating coil disk according to an embodiment of the present application
  • FIG. 2 is a perspective view of the electromagnetic heating coil disk 100.
  • the coil chassis 110 includes a winding central region 111 and a winding region 112.
  • the winding region 112 is provided with a wired slot 113.
  • the electromagnetic coil 120 is wound around the linear slot 113, and further includes: thermal Resistor 140, set in winding In the group center area 111, the thermistor 140 is a ceramic package thermistor. Compared with glass-packaged thermistors, ceramic package thermistors have shorter leads and relatively less iron-containing components, and the thermistor body is not easily inductively heated.
  • the coil disk 100 further includes: a temperature control switch 150 disposed in the winding center region 111, and the temperature control switch 150 is a ceramic package temperature control switch.
  • the coil disk 100 is placed in an electromagnetic heating device, and the coil disk 100 is controlled by a microcontroller of the electromagnetic heating device.
  • the thermistor 140 of the coil disk 100 is directly electrically connected to the microcontroller of the electromagnetic heating device, and the microcontroller is electrically connected to the electromagnetic coil 120 of the coil disk 100 through an electronic switch, and the microcontroller is based on the thermistor.
  • the temperature feedback of the 140 feedback electronic switch is turned on and off. If the thermistor 140 or the microcontroller fails, the anti-dry protection cannot be effectively performed.
  • the coil disk 100 of the embodiment adds a temperature control switch 150 for connecting with the power supply unit in the electromagnetic heating device, and when the temperature of the bottom of the heating device rises to a certain value, the power is turned off. Reduces the risk of dry burning due to the failure of the thermistor 140 or microcontroller.
  • the temperature control switch 150 is a switching device that automatically disconnects after reaching a certain limit temperature and resumes operation after the temperature returns to normal.
  • An inner inner baffle 114 is disposed on the inner side of the winding area 112, and an outer baffle 115 is disposed on the outer side.
  • a plurality of wire trough partitions 116 are disposed between the inner baffle and the outer baffle, and the trough partition 116 will be wound.
  • 112 is divided into a plurality of loop slots 113.
  • a fixing plate 117 is disposed on the outer side of the winding center region 111, and a receiving groove 118 is disposed between the fixing plate and the inner baffle of the winding area.
  • the magnetic strip 130 includes a front magnetic strip 131 fixed in the receiving groove 118.
  • the shape of the strip 131 can be set to an elongated shape or a U shape or other shapes, and the number can be set according to actual needs.
  • the magnetic strip 130 further includes a bottom magnetic strip 132 that is fixed to the back surface of the coil chassis 110 and extends from the inner side to the outer side of the winding area 112 to further reduce magnetic leakage.
  • the shape of the bottom magnetic strip 132 may be arranged in an elongated shape or a U shape or other shapes, and the number is set according to actual needs.
  • the bottom magnetic strip 132 is arranged on the back circumference of the coil chassis 110 to be radially.
  • the electromagnetic coil 120 is spirally wound around the wire groove 113, and two or more layers of electricity
  • the magnetic coils 120 are vertically overlapped; the electromagnetic coils 120 are wound at least three times, and some or all of the electromagnetic coils 120 located in the intermediate portion of the wire grooves 113 are provided with at least one supplementary coil 121.
  • the existing coil disc heating area is too concentrated, the heat distribution is uneven, and the heat dissipation rate of the bottom of the pot bottom is slow, so that the object in the pot body is unevenly heated.
  • the portion located in the middle portion of the trough 113 or All of the electromagnetic coils 120 are provided with at least one layer of supplemental coils 121, which are located directly below the bottom of the pot, taking into account heating efficiency and heat dissipation.
  • the electromagnetic coil 120 located in the middle portion of the wire groove 113 refers to the electromagnetic coil 120 that does not contact the inner baffle 114 and the outer baffle 115 of the winding region.
  • the electromagnetic coil 120 of the present embodiment is wound seven times, and the third coil and the fifth coil electromagnetic coil 120 located in the middle portion of the slot 113 are provided with a layer of supplementation from the inner side of the winding region 112.
  • Coil 121 The supplemental coils 121 are arranged to improve the heating efficiency, and the third and fifth turns disposed in the intermediate portion of the wire groove 113 are for ensuring heat dissipation of the entire wire groove 113.
  • the electromagnetic coil may also be subjected to other winding methods, such as providing a supplemental coil in the fourth and fifth coils of the electromagnetic coil in the middle of the slot, or in the middle of the slot.
  • Three coils, a fourth coil and a fifth coil are provided with a supplementary coil, or the electromagnetic coil is wound five times, starting from the inner side of the winding area, and the third and fourth coils are located in the middle of the slot.
  • the coil is provided with a supplemental coil.
  • the coil disk of this embodiment comprises a coil chassis, an electromagnetic coil and a magnetic strip
  • the coil chassis comprises a winding central region and a winding region, and further comprises a thermistor disposed in a central region of the winding, wherein the thermistor is a ceramic package thermistor It can solve the problem that the thermistor body of the coil disk is easily heated by induction, and the high temperature damage of the thermistor or the coil disk is prevented.
  • the embodiment of the present application further provides an electromagnetic heating device including a power supply unit 200, a switch unit 300, a microcontroller 400, and a coil disk 100 as described above, wherein, as shown in FIG. 4, the coil disk 100
  • the electromagnetic coil 120 is connected to the microcontroller 400 through the switch unit 300, and the thermistor 140 of the coil disk 100 is electrically connected to the microcontroller 400.
  • the thermistor 150 is a ceramic package thermistor. Compared with the glass package thermistor, the ceramic package thermistor has a short lead wire and a relatively small iron component, and the thermistor body is not easy. It is heated by induction.
  • the coil disk 100 further includes a temperature control switch 150 that is coupled between the power supply unit 200 and the switching unit 300.
  • the microcontroller 400 controls the conduction and disconnection of the switch unit 300 according to the temperature fed back by the thermistor 140. If the thermistor 140 or the microcontroller 400 fails, the temperature of the bottom of the heater is raised to a certain value. Turning off the power supply reduces the risk of dry burning due to the failure of the thermistor 140 or the microcontroller 400.
  • the switch unit 300 includes an electronic switch.
  • the electromagnetic heating device of the embodiment comprises a power supply unit, a switch unit, a microcontroller and a coil disk, wherein the coil disk comprises a coil chassis, an electromagnetic coil and a magnetic strip, the coil chassis comprises a winding central region and a winding region, and the coil disk further comprises
  • the thermistor electrically connected to the microcontroller is disposed in the central region of the winding, and the thermistor is a ceramic package thermistor, which can solve the problem that the thermistor body of the coil disk is easily heated by induction, and the thermistor or the coil is prevented.
  • the disk has a high temperature damage.
  • Embodiments of the present application also provide an electromagnetic heating coffee machine including a coffee machine housing, and an electromagnetic heating device as described above.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • General Induction Heating (AREA)
  • Resistance Heating (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

一种电磁加热线圈盘（100）及电磁加热装置，电磁加热线圈盘（100）包括线圈底盘（110）、电磁线圈（120）和磁条（130），线圈底盘（110）包括绕组中心区域（111）和绕线区域（112），绕线区域（112）设置有线槽（113），电磁线圈（120）绕在线槽（113）内，还包括：热敏电阻（140），设置在绕组中心区域（111），热敏电阻（140）为陶瓷封装热敏电阻。

Description

电磁加热线圈盘及电磁加热装置 技术领域
本申请实施例涉及电磁加热领域，特别是涉及一种电磁加热线圈盘及电磁加热装置。
背景技术
电磁加热装置功率大，发热速度快，当出现干烧异常时，被加热器具的锅底迅速变红，热量传递到线圈盘上就会造成线圈盘损坏，因此必须进行防干烧保护。现有的保护方案一般是在线圈盘中心区域装设温度传感器，以探测被加热器具的温度，最常用的温度传感器是玻璃封装的负温度系数(NTC)热敏电阻。但由于这类热敏电阻含有一定铁质成份，会被感应加热，导致损坏或不能准确检测锅底的温度，线圈盘往往在防干烧保护前已因高温损坏，因得不到及时保护，大大影响了产品的安全性和可靠性。
目前常用的解决方案是加屏蔽层的方式，或者在线圈盘可用空间较大的情况下，使热敏电阻远离加热线盘的方式来保证热敏电阻本体不被加热。而加屏蔽层增加了加工工艺的复杂度，后者这种采用空间隔离的方式要求线圈盘的物理尺寸较大(太小的内径会导致屏蔽磁条失效)，不适合应用于小型化和中小功率的电磁加热装置。
发明内容
本申请实施例主要解决的技术问题是提供一种电磁加热线圈盘及电磁加热装置，能够解决线圈盘的热敏电阻本体容易被感应加热的问题，防止热敏电阻或线圈盘出现高温损坏现象。
为解决上述技术问题，本申请采用的一个技术方案是：第一方面，提供一种电磁加热线圈盘，包括线圈底盘、电磁线圈和磁条，线圈底盘包括绕组中心区域和绕线区域，绕线区域设置有线槽，电磁线圈绕在线槽内，还包括：
热敏电阻，设置在绕组中心区域，热敏电阻为陶瓷封装热敏电阻。
可选地，线圈盘还包括：
温控开关，设置在所述绕组中心区域，所述温控开关为陶瓷封装温控开关。
可选地，绕线区域的内侧设置有一圈内挡板，外侧设置有一圈外挡板，在内挡板与外挡板之间设置有若干线槽隔板，线槽隔板将绕线区域分隔成若干圈线槽。
可选地，绕组中心区域的外侧设置有固定板，固定板与绕线区域的内挡板之间设置有容置槽；
磁条包括正面磁条，固定于容置槽内。
可选地，磁条还包括底面磁条，固定于线圈底盘的背面，从绕线区域的内侧延伸至外侧。
可选地，电磁线圈呈螺旋状绕在线槽内，两层以上的电磁线圈上下重叠；
电磁线圈至少绕制三圈，位于线槽中间区域的部分或全部电磁线圈设置有至少一层补充线圈。
可选地，电磁线圈绕制七圈，位于线槽中间区域的第三圈和第五圈电磁线圈都设置有一层补充线圈。
第二方面，本申请实施例还提供一种电磁加热装置，包括电源单元、开关单元和微控制器，还包括：如上所述的线圈盘；
其中，线圈盘的电磁线圈通过开关单元与微控制器连接，线圈盘的热敏电阻与微控制器电性连接。
结合第二方面的第一种实现方式，在第二种可能的实现方式中，线圈盘的温控开关连接在电源单元和开关单元之间。
第三方面，本申请实施例还提供一种电磁加热式咖啡机，包括咖啡机壳体，以及如上所述的电磁加热装置。
本申请实施例的有益效果是：区别于现有技术的情况，本申请实施例的线圈盘包括线圈底盘、电磁线圈和磁条，线圈底盘包括绕组中心区域和绕线区域，还包括热敏电阻，设置在绕组中心区域，其中，热敏电 阻为陶瓷封装热敏电阻，能够解决线圈盘的热敏电阻本体容易被感应加热的问题，防止热敏电阻或线圈盘出现高温损坏现象。
附图说明
一个或多个实施例通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件表示为类似的元件，除非有特别申明，附图中的图不构成比例限制。
图1是本申请实施例的一种电磁加热线圈盘的结构爆炸图；
图2是图1所示的线圈盘的立体图；
图3是图1所示的线圈盘的电磁线圈的绕制法示意图；
图4是本申请实施例的一种电磁加热装置的功能结构示意图。
具体实施例
为了便于理解本申请，下面结合附图和具体实施例，对本申请进行更详细的说明。需要说明的是，当元件被表述“固定于”另一个元件，它可以直接在另一个元件上、或者其间可以存在一个或多个居中的元件。当一个元件被表述“连接”另一个元件，它可以是直接连接到另一个元件、或者其间可以存在一个或多个居中的元件。
除非另有定义，本说明书所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本说明书中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是用于限制本申请。本说明书所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1和图2，图1为本申请实施例提供的一种电磁加热线圈盘的结构爆炸图，图2为该电磁加热线圈盘100的立体图，如图1所示，该线圈盘100包括线圈底盘110、电磁线圈120和磁条130，线圈底盘110包括绕组中心区域111和绕线区域112，绕线区域112设置有线槽113，电磁线圈120绕在线槽113内，还包括：热敏电阻140，设置在绕 组中心区域111，热敏电阻140为陶瓷封装热敏电阻。与玻璃封装热敏电阻相比，陶瓷封装热敏电阻的引线较短，含铁质成分相对较少，热敏电阻本体不容易被感应加热。
可选地，线圈盘100还包括：温控开关150，设置在绕组中心区域111，温控开关150为陶瓷封装温控开关。
在实际应用中，线圈盘100置于电磁加热装置中，通过电磁加热装置的微控制器控制线圈盘100工作。具体地，线圈盘100的热敏电阻140直接电性连接至电磁加热装置的微控制器，微控制器通过一电子开关与线圈盘100的电磁线圈120电性连接，微控制器根据热敏电阻140反馈的温度控制电子开关的导通与断开，如果热敏电阻140或微控制器出现故障，不能有效地进行防干烧保护。
本实施例的线圈盘100增加了温控开关150，温控开关150用于与电磁加热装置中的电源单元连接，当被加热器具的锅底温度升到某一个特定值的时候关断电源，降低了因热敏电阻140或微控制器出现故障后干烧引起的风险。
可选地，温控开关150是一个到达某一极限温度后自动断开，并待温度恢复正常后可恢复工作的开关装置。
绕线区域112的内侧设置有一圈内挡板114，外侧设置有外挡板115，在内挡板与外挡板之间设置有若干线槽隔板116，线槽隔板116将绕线区域112分隔成若干圈线槽113。
绕组中心区域111的外侧设置有固定板117，固定板与绕线区域的内挡板之间设置有容置槽118，磁条130包括正面磁条131，固定于容置槽118内，正面磁条131的形状可以设置为长条形或U形或其他形状，数量可以根据实际需求设置。
磁条130还包括底面磁条132，固定于线圈底盘110的背面，从绕线区域112的内侧延伸至外侧，进一步减少磁泄露。同样地，底面磁条132的形状可以设置为长条形或U形或其他形状，数量根据实际需求设置，可选地，底面磁条132在线圈底盘110的背面圆周排列，呈放射状。
进一步地，电磁线圈120呈螺旋状绕在线槽113内，两层以上的电 磁线圈120上下重叠；电磁线圈120至少绕制三圈，位于线槽113中间区域的部分或全部电磁线圈120设置有至少一层补充线圈121。现有的线圈盘加热区域过于集中、热量分布不均，再加上锅底中心向边缘散热速度较慢，使得锅体内的物体受热不均，本实施例在位于线槽113中间区域的部分或全部电磁线圈120设置至少一层补充线圈121，补充线圈121位于锅底的正下方，兼顾了加热效率和散热。需要说明的是，位于线槽113中间区域的电磁线圈120指的是不与绕线区域的内挡板114和外挡板115接触的电磁线圈120。
如图3所示，本实施例的电磁线圈120绕制七圈，从绕线区域112的内侧开始计，位于线槽113中间区域的第三圈和第五圈电磁线圈120都设置有一层补充线圈121。所述补充线圈121的设置是为了提高加热效率，而设置在所述线槽113中间区域的第三圈和第五圈是为了保证整个线槽113的散热。在其他实施例中，电磁线圈也可采用其他的绕制法，如，在位于线槽中间区域的第四圈和第五圈电磁线圈设置一层补充线圈，或者在位于线槽中间区域的第三圈、第四圈和第五圈电磁线圈设置一层补充线圈，或者电磁线圈绕制5圈，从绕线区域的内侧开始计，在位于线槽中间区域的第三圈和第四圈电磁线圈设置一层补充线圈。
本实施例的线圈盘包括线圈底盘、电磁线圈和磁条，线圈底盘包括绕组中心区域和绕线区域，还包括热敏电阻，设置在绕组中心区域，其中，热敏电阻为陶瓷封装热敏电阻，能够解决线圈盘的热敏电阻本体容易被感应加热的问题，防止热敏电阻或线圈盘出现高温损坏现象。
本申请实施例还提供一种电磁加热装置，该电磁加热装置包括电源单元200、开关单元300、微控制器400和如上所述的线圈盘100，其中，如图4所示，线圈盘100的电磁线圈120通过开关单元300与微控制器400连接，线圈盘100的热敏电阻140与微控制器400电性连接。
在本实施例中，热敏电阻150为陶瓷封装热敏电阻，与玻璃封装热敏电阻相比，陶瓷封装热敏电阻的引线较短，含铁质成分相对较少，热敏电阻本体不容易被感应加热。
在一些实施例中，线圈盘100还包括温控开关150，温控开关150连接在电源单元200和开关单元300之间。微控制器400根据热敏电阻140反馈的温度控制开关单元300的导通与断开，如果热敏电阻140或微控制器400出现故障，当被加热器具的锅底温度升到某一个特定值的时候关断电源，降低了因热敏电阻140或微控制器400出现故障后干烧引起的风险。
可选地，开关单元300包括一电子开关。
本实施例的电磁加热装置包括电源单元、开关单元、微控制器和线圈盘，其中，线圈盘包括线圈底盘、电磁线圈和磁条，线圈底盘包括绕组中心区域和绕线区域，线圈盘还包括与微控制器电性连接的热敏电阻，设置在绕组中心区域，热敏电阻为陶瓷封装热敏电阻，能够解决线圈盘的热敏电阻本体容易被感应加热的问题，防止热敏电阻或线圈盘出现高温损坏现象。
本申请实施例还提供一种电磁加热式咖啡机，包括咖啡机壳体，以及如上所述的电磁加热装置。
需要说明的是，本申请的说明书及其附图中给出了本申请的较佳的实施例，但是，本申请可以通过许多不同的形式来实现，并不限于本说明书所描述的实施例，这些实施例不作为对本申请内容的额外限制，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。并且，上述各技术特征继续相互组合，形成未在上面列举的各种实施例，均视为本申请说明书记载的范围；进一步地，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本申请所附权利要求的保护范围。

Claims (10)

  1. 一种电磁加热线圈盘，包括线圈底盘、电磁线圈和磁条，所述线圈底盘包括绕组中心区域和绕线区域，所述绕线区域设置有线槽，所述电磁线圈绕在所述线槽内，其特征在于，还包括：
    热敏电阻，设置在所述绕组中心区域，所述热敏电阻为陶瓷封装热敏电阻。
  2. 根据权利要求1所述的线圈盘，其特征在于，还包括：
    温控开关，设置在所述绕组中心区域，所述温控开关为陶瓷封装温控开关。
  3. 根据权利要求2所述的线圈盘，其特征在于，
    所述绕线区域的内侧设置有一圈内挡板，外侧设置有一圈外挡板，在所述内挡板与外挡板之间设置有若干线槽隔板，所述线槽隔板将所述绕线区域分隔成若干圈线槽。
  4. 根据权利要求2所述的线圈盘，其特征在于，
    所述绕组中心区域的外侧设置有固定板，所述固定板与所述绕线区域的内挡板之间设置有容置槽；
    所述磁条包括正面磁条，固定于所述容置槽内。
  5. 根据权利要求4所述的线圈盘，其特征在于，
    所述磁条还包括底面磁条，固定于所述线圈底盘的背面，从所述绕线区域的内侧延伸至外侧。
  6. 根据权利要求1-5所述的线圈盘，其特征在于，
    所述电磁线圈呈螺旋状绕在所述线槽内，两层以上的电磁线圈上下重叠；
    所述电磁线圈至少绕制三圈，位于所述线槽中间区域的部分或全部电磁线圈设置有至少一层补充线圈。
  7. 根据权利要求6所述的线圈盘，其特征在于，
    所述电磁线圈绕制七圈，位于所述线槽中间区域的第三圈和第五圈电磁线圈都设置有一层补充线圈。
  8. 一种电磁加热装置，包括电源单元、开关单元和微控制器，其特征在于，还包括：如权利要求1所述的线圈盘；
    其中，所述线圈盘的电磁线圈通过所述开关单元与所述微控制器连接，所述线圈盘的热敏电阻与所述微控制器电性连接。
  9. 一种电磁加热装置，包括电源单元、开关单元和微控制器，其特征在于，还包括：如权利要求2-7任一项所述的线圈盘；
    其中，所述线圈盘的电磁线圈通过所述开关单元与所述微控制器连接，所述线圈盘的热敏电阻与所述微控制器电性连接，所述线圈盘的温控开关连接在所述电源单元和所述开关单元之间。
  10. 一种电磁加热式咖啡机，其特征在于，包括咖啡机壳体，以及如权利要求8或9所述的电磁加热装置。
PCT/CN2017/093910 2017-07-21 2017-07-21 电磁加热线圈盘及电磁加热装置 WO2019014934A1 (zh)

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