CN104379986B - 磁流体热交换led灯 - Google Patents

磁流体热交换led灯 Download PDF

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CN104379986B
CN104379986B CN201380030743.7A CN201380030743A CN104379986B CN 104379986 B CN104379986 B CN 104379986B CN 201380030743 A CN201380030743 A CN 201380030743A CN 104379986 B CN104379986 B CN 104379986B
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magnetic fluid
heat
led
magnetic
aluminium base
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CN104379986A (zh
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谢祖华
沈敏
魏小兵
刘志优
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Shenzhen Civil Explosion Photoelectric Co ltd
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UP-SHINE LIGHTING Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/56—Cooling arrangements using liquid coolants
    • F21V29/58—Cooling arrangements using liquid coolants characterised by the coolants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

一种磁流体热交换LED灯，设有磁流体散热器(2)。磁流体散热器(2)设有磁流体(13)以及非磁流体(14)。控制器(3)控制电磁线圈(15)产生不断交变的磁场，使磁流体(13)的比重发生不断变化，进而使磁流体(13)与非磁流体(14)不断循环交换位置。以磁流体(13)以及非磁流体(14)作为热量的载体，将PN结(4)的热量由铝基板(11)不断送到散热罩(12)，提高了LED灯的散热效率。

Description

磁流体热交换LED灯
技术领域
本发明涉及一种LED灯，特别是一种磁流体热交换LED灯。
背景技术
现有的大功率LED灯，LED灯PN结的热量散发的效率较低，影响了LED灯PN结的热量散发，降低了LED灯的使用寿命。
发明内容
本发明的目的是克服现有技术的不足，提供一种磁流体热交换LED灯，利用磁流体与非磁流体不断循环交换位置，将LED的PN结的热量散发出去，提高LED灯的散热效果。
本发明所采用的技术方案是：磁流体热交换LED灯包括有LED、磁流体散热器以及控制器；LED包括有PN结、底座、电极、硅胶球、阻焊层、敷铜层、绝缘层以及铝基板，PN结与底座连接，底座与敷铜层连接，敷铜层与绝缘层连接，绝缘层与铝基板连接；磁流体散热器包括有散热罩、磁流体、非磁流体以及电磁线圈，散热罩与铝基板密封连接构成一个密封型腔，磁流体以及非磁流体密封于密封型腔内，散热罩设有螺旋散热片，电磁线圈设于螺旋散热片上；控制器包括有LED电源以及脉冲电源发生器，LED电源与电极连接，脉冲电源发生器与电磁线圈连接；磁流体与非磁流体的比重不同，磁流体与非磁流体为互不相容的液体。
磁流体热交换LED灯的工作原理是：磁流体热交换LED灯设有磁流体散热器以及控制器，磁流体散热器的散热罩与LED的铝基板构成一个密封型腔，密封型腔内充满有磁流体以及非磁流体；磁流体的比重小于非磁流体的比重，磁流体在非磁流体的上方，非磁流体与铝基板接触，磁流体与散热罩接触；工作时，LED的PN结将热量传递到铝基板，非磁流体吸收铝基板的热量后，控制器控制电磁线圈通电，电磁线圈产生磁场将磁流体磁化，使磁流体的比重大于非磁流体的比重，非磁流体上升到散热罩，将热量传递给散热罩，散热罩将热量散发于空间；同时，磁流体下降到铝基板，
吸收铝基板的热量；磁流体吸收铝基板的热量后，控制器控制电磁线圈断电，电磁线圈的磁场消失，磁流体的比重恢复到小于非磁流体比重的状态，吸收了铝基板热量的磁流体上升到散热罩，将热量传递给散热罩，散热罩将热量散发于空间；同时，经散热罩散热后的非磁流体下降到铝基板的位置，如此不断循环，利用磁流体与非磁流体交换位置，将铝基板的热量散发出去；或者，磁流体的比重大于非磁流体的比重，磁流体在非磁流体的下方，磁流体与铝基板接触，非磁流体与散热罩接触，利用控制器控制电磁线圈不断循环通电以及断电，产生不断交变的磁场，使磁流体的比重不断发生变化，控制磁流体与非磁流体不断循环交换位置，以磁流体以及非磁流体作为热量的载体，不断将铝基板的热量传送到散热罩，提高LED的散热效果。磁流体热交换LED灯的散热路径有二路：其一：LED的PN结的热量经过底座→敷铜层→铝基板→磁流体→散热罩→大气；其二：LED的PN结的热量经过底座→敷铜层→铝基板→非磁流体→散热罩→大气。
本发明的有益效果是：磁流体热交换LED灯设有磁流体散热器，磁流体散热器设有磁流体以及非磁流体，利用控制器控制电磁线圈产生不断交变的磁场，使磁流体的比重发生不断变化，使磁流体与非磁流体不断循环交换位置，以磁流体以及非磁流体作为热量的载体，将PN结的热量由铝基板不断送到散热罩，提高了LED灯的散热效率。
附图说明
图1是磁流体热交换LED灯的结构示意图。
具体实施方式
下面结合附图对本发明进行进一步的说明：
图1所示的磁流体热交换LED灯的结构示意图，磁流体热交换LED灯包括有LED1、磁流体散热器2以及控制器3；LED1包括有PN结4、底座5、电极6、硅胶球7、阻焊层8、敷铜层9、绝缘层10以及铝基板11，PN结4与底座5连接，底座5与敷铜层9连接，敷铜层9与绝缘层10连接，绝缘层10与铝基板11连接；磁流体散热器2包括有散热罩12、磁流体13、非磁流体14以及电磁线圈15，散热罩12与铝基板11密封连接构成一个密封型腔16，磁流体13以及非磁流体14密封于密封型腔16内，散热罩12设有螺旋散热片17，电磁线圈15设于螺旋散热片17上；控制器3包括有LED电源18以及脉冲电源发生器19，LED电源18与电极6连接，脉冲电源发生器19与电磁线圈15连接；磁流体13与非磁流体14的比重不同，磁流体的比重小于非磁流体的比重，或者，非磁流体的比重小于磁流体的比重；磁流体13与非磁流体14为互不相容的液体。
为了散热罩12与LED1的密封连接，散热罩12包括有散热筒20以及密封盖21，密封盖21与散热筒20密封连接，密封盖21与散热筒20之间设有密封环22，散热筒20与铝基板11密封连接，散热筒20与LED1的铝基板11之间设有导热的密封垫23，密封盖21设有第一散热片24。
为了加强散热罩12的散热效果，其特征在于：所述的密封盖21的第一散热片24内设有散热型腔25，散热型腔25内设有磁流体13或者非磁流体14；散热罩12连接有外壳26，控制器3设于外壳26内，外壳26设有通风孔27，LED1与外壳26固定连接；外壳26设有第二散热片28。
为了降低磁流体13的成本，磁流体13的容积小于非磁流体14的容积；密封型腔16内充满磁流体13以及非磁流体14，磁流体13的容积加上非磁流体14的容积与密封型腔16的容积相等。
为了提高电磁线圈15的磁场强度，散热筒20内设有内套筒，内套筒与散热筒20过盈配合，内套筒有铁磁材料构成。

Claims (4)

1.磁流体热交换LED灯，其特征在于：所述的磁流体热交换LED灯包括有LED(1)、磁流体散热器(2)以及控制器(3)；LED(1)包括有PN结(4)、底座(5)、电极(6)、硅胶球(7)、阻焊层(8)、敷铜层(9)、绝缘层(10)以及铝基板(11)，PN结(4)与底座(5)连接，底座(5)与敷铜层(9)连接，敷铜层(9)与绝缘层(10)连接，绝缘层(10)与铝基板(11)连接；磁流体散热器(2)包括有散热罩(12)、磁流体(13)、非磁流体(14)以及电磁线圈(15)，散热罩(12)与铝基板(11)密封连接构成一个密封型腔(16)，磁流体(13)以及非磁流体(14)密封于密封型腔(16)内，散热罩(12)设有螺旋散热片(17)，电磁线圈(15)设于螺旋散热片(17)上；控制器(3)包括有LED电源(18)以及脉冲电源发生器(19)，LED电源(18)与电极(6)连接，脉冲电源发生器(19)与电磁线圈(15)连接；磁流体(13)与非磁流体(14)的比重不同，磁流体(13)与非磁流体(14)为互不相容的液体；所述的散热罩(12)包括有散热筒(20)以及密封盖(21)，密封盖(21)与散热筒(20)密封连接，密封盖(21)与散热筒(20)之间设有密封环(22)，散热筒(20)与铝基板(11)密封连接，散热筒(20)与LED(1)的铝基板(11)之间设有导热的密封垫(23)，密封盖(21)设有第一散热片(24)；所述的散热筒(20)内设有内套筒(29)，内套筒(29)与散热筒(20)过盈配合，内套筒(29)有铁磁材料构成；所述的磁流体的比重小于非磁流体的比重；或者，非磁流体的比重小于磁流体的比重。
2.根据权利要求1所述的磁流体热交换LED灯，其特征在于：所述的密封盖(21)的第一散热片(24)内设有散热型腔(25)，散热型腔(25)内设有磁流体(13)或者非磁流体(14)。
3.根据权利要求2所述的磁流体热交换LED灯，其特征在于：所述的散热罩(12)连接有外壳(26)，控制器(3)设于外壳(3)内，外壳(3)设有通风孔(27)，LED(1)与外壳(26)固定连接。
4.根据权利要求1所述的磁流体热交换LED灯，其特征在于：所述的磁流体(13)的容积小于非磁流体(14)的容积；密封型腔(16)内充满磁流体(13)以及非磁流体(14)，磁流体(13)的容积加上非磁流体(14)的容积与密封型腔(16)的容积相等。
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CN103196059A (zh) * 2013-03-18 2013-07-10 林智勇 磁流体热交换led灯
CN109479730B (zh) * 2018-11-21 2021-08-31 嘉禾县生元生态农业发展有限公司 一种节能环保的畜牧业养殖圈
CN110290679B (zh) * 2019-06-27 2021-02-19 厦门天马微电子有限公司 一种水冷散热的显示模组
CN112178501B (zh) * 2020-09-28 2021-06-18 江西旺来科技有限公司 一种基于磁流体运动的散热型led灯
CN112367806B (zh) * 2020-10-28 2022-03-29 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) 一种减阻式微细通道液冷散热器
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