WO2013004066A1 - 一种电磁炉散热结构 - Google Patents

一种电磁炉散热结构 Download PDF

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Publication number
WO2013004066A1
WO2013004066A1 PCT/CN2011/084353 CN2011084353W WO2013004066A1 WO 2013004066 A1 WO2013004066 A1 WO 2013004066A1 CN 2011084353 W CN2011084353 W CN 2011084353W WO 2013004066 A1 WO2013004066 A1 WO 2013004066A1
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Prior art keywords
fan
boss
heat dissipation
electromagnetic
lower cover
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PCT/CN2011/084353
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English (en)
French (fr)
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刘文斌
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Liu Wenbin
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Publication of WO2013004066A1 publication Critical patent/WO2013004066A1/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
    • H05B6/10—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
    • H05B6/1263—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements using coil cooling arrangements

Definitions

  • the invention relates to an electromagnetic oven heat dissipation structure, in particular to a direct air passage type forced heat dissipation structure.
  • the induction cooker uses the principle of electromagnetic coil to generate eddy current by electromagnetic induction to realize heating of the pot.
  • the inside of the cooker is operated at a relatively high temperature, so that the working conditions of the internal components are poor.
  • heat dissipation is an important issue facing the heat dissipation of induction cookers.
  • the existing conventional heat dissipation method is air-cooled heat dissipation, that is, the axial flow fan and the induction cooker lower cover are installed in parallel to force the exhaust air to dissipate heat.
  • the axial flow fan is characterized by the wind, that is, the wind direction directly faces the upper cover or the panel or directly draws out the wind, the wind resistance is large due to the curve, resulting in low efficiency and large noise, and the heat dissipation effect is naturally poor.
  • the heat dissipation structure disclosed in the Chinese Patent Application No. 200810194415.1 is one of the representatives of the traditional method; the patent of China 200620011547.2 seeks to make up for the deficiencies of the traditional structure, and attempts to correct or patch (such as in the airway) without changing the traditional basic structure. Adding the wind guide to solve the problem, although it can improve the heat dissipation capacity, but there is no major change in the way of thinking and structure.
  • the object of the present invention is to provide an axial flow fan heat dissipation structure which is simple in structure, easy to process and assemble, and has high heat dissipation efficiency.
  • an electromagnetic oven heat dissipation structure which is mounted on a chassis formed by a lower cover of an induction cooker, and includes a lower cover.
  • a through hole for installing a fan is opened on the lower cover, and the fan is an axial flow fan, and the fan is above the fan.
  • the axis is provided with a solenoid reel.
  • the magnet wire reel is also coaxial with the microcrystalline panel on which the pot is placed, and the microcrystalline panel is disposed on a boss which is higher than the surface of the induction cooker and is embedded on the upper surface of the boss.
  • the boss is a metal member that is the same as the furnace panel, and an air outlet is uniformly opened on the side wall of the boss.
  • a fan-shaped air passage is formed between the mounting through hole of the fan and the electromagnetic wire disc and the boss.
  • the air outlet is a duct type air outlet, which is waterproof and has an inner low, an outer low, and a middle high arch.
  • the invention changes the traditional air passage from the horizontal direction to the longitudinal direction, greatly shortens the stroke of the wind, improves the forced heat dissipation efficiency, simplifies the structure of the whole machine, is easy to assemble and convenient to maintain, and is particularly suitable for power higher than 2.5kw high power induction cooker.
  • FIG. 1 is a front elevational view, partly in section, of the air duct of the present invention
  • FIG. 2 is a front elevational view of the air outlet of FIG. 4 is a schematic diagram of the control process of the fan of the present invention.
  • the figures are shown in the figure, 1- Induction Cooker Lower Cover, 2-Fan, 3-Electromagnetic Wire Reel, 4-Cylinder Surface, 5-Air Channel, 6-Microcrystalline Panel, 7-Fish, 8-Boss, 9 - Air outlet.
  • the gist of the present invention is to provide an electromagnetic oven heat dissipation structure which is modified by a conventional vertical air passage parallel to the lower cover of the induction cooker as a vertical air passage perpendicular to the lower cover of the induction cooker, which greatly reduces the length of the air passage without a curve and the air passage.
  • the generated wind resistance is minimized, and the axial flow wind is directly blown to the electromagnetic coil at a short distance, and the heat dissipation efficiency of the fan is maximized by direct forced convection heat dissipation. Since the traditional induction cooker is mainly a small furnace of less than 2.5kw, the pursuit of ultra-thin becomes a trend and inevitable, so the air duct can only be set horizontally.
  • the high power of induction cooker is an important option.
  • the increase of thickness is inevitable.
  • the concept is undoubtedly self-locking the hands and feet to trap itself, so the thickness of the high-power induction cooker is changed to the horizontal air duct as the longitudinal air duct.
  • the drawings disclose a basic design of an electromagnetic oven heat dissipation structure.
  • the induction cooker lower cover 1 is used as a chassis, and a through hole for mounting the fan 2 is opened on the lower cover.
  • the fan is an axial flow fan, and a magnet wire reel 3 is respectively disposed in a coaxial manner above the fan and is used for
  • the microcrystalline panel 6 supporting the pot 7 is disposed on a boss 8 that is higher than the cooktop surface 4 to form a cooktop and is mounted on the upper surface of the boss.
  • This is the gist of the present invention, namely the fan-to-electromagnetic reel and the straight-through air duct 5 of the glass-ceramic plate.
  • the air duct can be closed according to actual design requirements.
  • the air channel can also be designed to be open or semi-open.
  • the air duct covers a large area, and a fan with a larger power is required (from the viewpoint of improving the heat dissipation efficiency, in general, other devices such as IGBTs that require forced heat dissipation are not in the air duct, and the air duct is mostly a line. Special for heat dissipation of disk and microcrystalline plate).
  • the figure shows a semi-open or semi-closed air duct, which is explained below by way of example.
  • the so-called air duct that is, the coaxial axis fan, the electromagnetic wire reel and the microcrystalline panel are all in the same channel, the lower end of the channel is a fan and its fan mounting through hole, and the upper end is a magnet wire reel and closed with the bracket in the channel.
  • the microcrystalline panel of the “road junction” is a small bell-shaped air duct with a large wall and a “wall” composed of other components. From the perspective of resource conservation, the open or semi-open air duct is more conducive to comprehensive utilization. It does not increase the burden on the fan, and the heat dissipation efficiency is similar to that of the closed air duct.
  • the electromagnetic wire reel can be wound in a sparse manner, that is, there is a necessary air-permeable gap between the wire and the wire of the wire reel; at this time, the electromagnetic reel is basically on the plane of the furnace surface, and the electromagnetic reel and the microcrystalline panel The gap between the two is actually a passage for guiding the air to the air outlet 9.
  • the air outlet is disposed on a side wall of the boss that constitutes the cooktop and protrudes from the furnace surface, and is also an extension of the air duct, and the air outlet should be evenly distributed.
  • the air outlet is also designed for the pipeline, and has an arcuate structure with a low middle and a high head.
  • the boss is made of metal or engineering plastic. Because it requires a certain thickness, it can be formed at one time when using plastic. However, the mold is too high and the mold volume is large. Therefore, the metal or plastic material is suitable for the boss. As a separate component, it is processed by the upper and lower parts (81, 82) and then combined (see Figure 3).
  • FIG. 4 illustrates that the fan used in the present invention is a variable speed fan controlled by a device such as a sensor, thereby further saving energy and reducing consumption, and environmental protection and the like have high comprehensive benefits.

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

Abstract

一种电磁炉散热结构，包括开有通孔的下盖（1）、安装在通孔中的风扇（2）、设置在风扇（2）的上方且与风扇（2）共轴线的电磁线盘（3），该风扇（2）是轴流风扇。电磁线盘（3）与上方搁置锅具（7）的微晶面板(6）共轴线。微晶面板（6）设置在高于电磁炉炉面（4）的凸台（8）上，在该凸台（8）的侧壁上均匀地开设有出风口（9）。本发明提高了强制散热效率，简化了整机结构，装配容易、维护便捷，特别适用于功率高于2.5kw的大功率电磁炉。

Description

一种电磁炉散热结构
技术领域
本发明涉及一种电磁炉散热结构，特别是指一种直通风道式强制散热结构。
背景技术
电磁炉是利用电磁线盘电磁感应产生涡流的原理实现对锅具加热的。在使用过程中，由于电磁线盘的发热和锅具通过陶瓷面板向电磁炉内部辐射热量，造成电磁炉内部在相对高的温度下工作，使内部元器件的工况较差。为此，散热是电磁炉散热概况面临的重要问题。现有的传统散热方式是风冷式散热，即将轴流风扇与电磁炉下盖平行安装来强制排风散热。由于轴流风扇由向出风的特性，即风向直接朝向上盖或面板或直接向外抽风，因弯道风阻大，造成效率低下且伴随较大的噪音，散热效果自然差。中国200810194415.1号专利申请公开的散热结构就是传统方式的代表之一；中国200620011547.2号专利则力图弥补传统结构之不足，试图在不改变传统基本结构的基础上，以纠偏或打补丁（如在风道中加入导风片）的手法解决问题，由此虽可提高散热能力，但在思路上和结构上并未产生重大变革。
发明内容
本发明的目的是提供一种结构简单、加工和装配容易，散热效率高的轴流式风扇散热结构。
根据上述目的设计了一种电磁炉散热结构，安装在电磁炉下盖构成的底盘上，包括下盖，在下盖上开有安装风扇的通孔，所述风扇是轴流风扇，在该风扇的上方共轴线设置有电磁线盘。该电磁线盘与上方搁置锅具的微晶面板也共轴线，而微晶面板设置在高于电磁炉炉面构成灶台的凸台上并镶嵌在该凸台的上表面上。所述凸台为与炉面板同体的金属构件，在该凸台的侧壁上均匀地开设有出风口。所述风扇的安装通孔与电磁线盘和凸台之间为呈喇叭口形的风道。所述出风口为管道式出风口，呈防水的内低、外低、中间高的弓形。
本发明与现有技术相比，改传统风道由横向变为纵向，大大缩短了风的行程，提高了强制散热效率，简化了整机结构，装配容易、维护便捷，特别适用于功率高于2.5kw的大功率电磁炉。
附图说明
附图1是本发明装配后风道局部的主视全剖示意图；附图2是附图中风向的走势示意图；附图3是附图1中出风口局部的主视全剖示意图；附图4是本发明风扇的控制过程示意图。图中标号所示为，1-电磁炉下盖，2-风扇，3-电磁线盘，4-炉面，5-风道，6-微晶面板，7-锅具，8-凸台，9-出风口。
具体实施方式
本发明的主旨是提供一种改传统的与电磁炉下盖平行的横向风道为与电磁炉下盖垂直的纵向风道的电磁炉散热结构，大幅度减短风道长度且无弯道，将风道产生的风阻降到最小，由轴流风近距离直接吹向电磁线盘，通过直接强制对流散热，使风扇的散热效率达到极致。由于传统的电磁炉以小于2.5kw的小型炉为主，追求超薄成为趋势和必然，故风道也就只能是横向设置。而从环保和烹饪的需求，电磁炉大功率化是重要选项，高于2.5kw的大功率电磁炉为满足功率和散热的要求，厚度的增加是必然的，这时还囿于传统的横向风道设计理念无疑于自锁手脚使自身陷于桎梏之中，于是利用大功率电磁炉的厚度改横向风道为纵向风道也就水到渠成了。下面结合附图对本发明作进一步详述。
附图公开了一种电磁炉散热结构的基本设计方案。图示，以电磁炉下盖1为底盘，在下盖上开有安装风扇2的通孔，所述风扇是轴流风扇，在该风扇的上方以共轴线方式分别设置有电磁线盘3和用于支撑锅具7的微晶面板6，所述微晶面板设置在高于电磁炉炉面4构成灶台的凸台8上并镶嵌在该凸台的上表面上。这是本发明的要点所在，即风扇至电磁线盘及微晶玻璃板的直通式风道5。该风道可根据实际设计需求设为封闭式的，这时其它需强制散热的器件如驱动器件IGBT等可利用其它并列的散热结构或方式散热；该风道也可设计为敞开式或半敞开式的，这时风道涵盖面较大，需使用较大功率的风扇（从提高散热效率的角度出发，一般情况下IGBT等其它需要强制散热的器件不在该风道内，该风道多为线盘及微晶板散热专用）。
图中所示为半敞开式或半封闭式风道，下面以图为例进行解释说明。所谓风道，即共轴线的风扇、电磁线盘和微晶面板共处于同一通道中，该通道下端为风扇及其风扇安装通孔，上端为与其支架一起搁置在通道中的电磁线盘和封闭“路口”的微晶面板，为下小上大的喇叭口形风道，侧壁为其它元器件组成的“墙”，从节约资源的角度出发，敞开式或半敞开式风道更利于综合利用且不会增加风扇的负担，而散热效率与封闭式风道相近，还节省了配套的零部件，优化了结构。为了实现良好的散热，电磁线盘可采用稀疏的方式绕成即线盘的线与线间存在必要的透风间隙；这时，电磁线盘基本处于炉面平面上，电磁线盘与微晶面板间的间隙实为向出风口9导风的通道。
所述出风口设置在构成灶台且凸出于炉面的凸台的侧壁上，也是风道的延伸段，出风口应均匀分布。为了防止炉面上的积水溅入，出风口也为管道设计，且为中间高两头低的弓形结构。该凸台为金属或工程塑胶材质，因需要一定的厚度，采用塑胶时虽可一次性成形，但对模具要求过高，模具体积亦大，所以不论金属材质或是塑胶材质均适宜将凸台作为一单独部件，由上下两部分（81、82）分别加工后对合而成（见图3）。
图4说明了本发明所用风扇为由传感器等装置控制的可调速风扇，以此可进一步节能降耗，环保等综合效益高。

Claims (5)

  1. 一种电磁炉散热结构，安装在电磁炉下盖（1）构成的底盘上，包括下盖，在下盖上开有安装风扇（2）的通孔，其特征是：
    所述风扇是轴流风扇，在该风扇的上方共轴线设置有电磁线盘（3）。
  2. 根据权利要求1所述的 电磁炉散热结构，其特征是：所述电磁线盘与上方搁置锅具（7）的微晶面板（6）共轴线，该微晶面板设置在高于电磁炉炉面（4）构成灶台的凸台（8）上并镶嵌在该凸台的上表面上。
  3. 根据权利要求2所述的电磁炉散热结构，其特征是：所述凸台为与炉面板同体的金属构件，在该凸台的侧壁上均匀地开设有出风口（9）。
  4. 根据权利要求1或2或3所述的 电磁炉散热结构，其特征是：所述风扇的安装通孔与电磁线盘和凸台之间为呈喇叭口形的风道（5）。
  5. 根据权利要求4所述的电磁炉散热结构，其特征是：所述出风口为管道式出风口，呈防水的内低、外低、中间高的弓形。
PCT/CN2011/084353 2011-07-06 2011-12-21 一种电磁炉散热结构 WO2013004066A1 (zh)

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CN102235703A (zh) * 2011-07-06 2011-11-09 惠州市厨易智能科技有限公司 一种电磁炉散热结构
CN203928042U (zh) * 2014-04-25 2014-11-05 陈克平 加热装置

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