WO2020186854A1 - 散热效率高的吹风机 - Google Patents

散热效率高的吹风机 Download PDF

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Publication number
WO2020186854A1
WO2020186854A1 PCT/CN2019/126728 CN2019126728W WO2020186854A1 WO 2020186854 A1 WO2020186854 A1 WO 2020186854A1 CN 2019126728 W CN2019126728 W CN 2019126728W WO 2020186854 A1 WO2020186854 A1 WO 2020186854A1
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Prior art keywords
heat dissipation
heating device
dissipation efficiency
high heat
hair dryer
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PCT/CN2019/126728
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English (en)
French (fr)
Inventor
倪祖根
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莱克电气股份有限公司
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Application filed by 莱克电气股份有限公司 filed Critical 莱克电气股份有限公司
Priority to US17/266,941 priority Critical patent/US11730245B2/en
Priority to ES19919742T priority patent/ES2925659T3/es
Priority to LTEPPCT/CN2019/126728T priority patent/LT3818903T/lt
Priority to KR1020217012369A priority patent/KR102569024B1/ko
Priority to JP2021510300A priority patent/JP7162731B2/ja
Priority to EP19919742.7A priority patent/EP3818903B1/en
Publication of WO2020186854A1 publication Critical patent/WO2020186854A1/zh

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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body

Definitions

  • the invention relates to the technical field of household appliances, and in particular to a hair dryer with high heat dissipation efficiency.
  • a hair dryer is a household appliance that uses the rotation of a fan to blow out the wind to dry wet objects.
  • the motor is used to drive the fan to rotate.
  • the purpose of the present invention is to provide a blower with good heat dissipation effect of the main control board and high heat dissipation efficiency.
  • the present invention adopts the following technical solutions:
  • a hair dryer with high heat dissipation efficiency comprising a body and a heating device arranged in the body, an air duct is formed in the body, and a heat dissipation device made of a thermally conductive material, and the heating device is located outside the air duct ,
  • the heat dissipation device is thermally connected to the heating element and is at least partially arranged in the air duct.
  • the hair dryer with high heat dissipation efficiency includes multiple sets of the heat dissipation devices, and the multiple sets of the heat dissipation devices are thermally connected to different heat generating points on the heat generating device.
  • the heat dissipation device includes a plurality of heat dissipation fins, and the heat dissipation fins extend from the heating element toward the air inlet end.
  • the heat sink includes a top in the air duct, a front side on the windward side, and a rear side on the leeward side, the top is an inclined surface, the front side is convexly arched, and the rear side The connection with the top is a curved surface.
  • the heat dissipation device further includes a base, and the bottom of the heat sink is arranged on the base.
  • the base is fan-shaped, and the fan-shaped base is aligned with the heating points on the heating device; or, the base is ring-shaped, and the ring-shaped base is aligned with the heating device as a whole.
  • the base is thermally connected to the heating point on the heating device.
  • a step surface is provided on the base, and the step surface is attached to the heating element.
  • the gap between the heat dissipation device and the heating device is filled with a thermally conductive material.
  • the heating device is a MOS tube and/or a silicon controlled rectifier.
  • the hair dryer with high heat dissipation efficiency of the present invention is provided with a heat dissipation device made of heat-conducting material.
  • the heat dissipation device is thermally connected to the heating device and is at least partially arranged in the air duct, and is carried away by air flow with a temperature lower than the temperature of the heat dissipation device such as natural wind.
  • the heat on the heat dissipating device achieves the effect of dissipating heat for the heating device, and solves the problem that the main control board in the existing hair dryer cannot dissipate well.
  • Fig. 1 is a cross-sectional view of a hair dryer with high heat dissipation efficiency according to an embodiment of the present invention
  • FIG 2 is one of the structural schematic diagrams of the hair dryer with high heat dissipation efficiency provided by the specific embodiment of the present invention
  • FIG. 3 is a second structural diagram of a hair dryer with high heat dissipation efficiency according to a specific embodiment of the present invention.
  • Fig. 4 is a schematic structural diagram of a heat dissipation device according to a specific embodiment of the present invention.
  • the hair dryer includes a body 1, a heating device 2 arranged in the body 1, and a heat dissipation device 3 made of a thermally conductive material.
  • the thermally conductive material may be, but is not limited to, a metal.
  • An air duct 11 is formed in the body 1, the heating element 2 is located outside the air duct 11, and the heat dissipation device 3 is thermally connected to the heating element 2 and is at least partially disposed in the air duct 11.
  • the heating device 2 can be, but is not limited to, a main control board provided with heating elements such as MOS tubes and thyristors, but it is not a heating wire used for heating airflow in a conventional hair dryer; the so-called thermal connection can be a heat sink 3 is in direct contact with the heating device 2, or the heat sink 3 and the heating device 2 are indirectly contacted through other structures, as long as it can conduct heat.
  • a main control board provided with heating elements such as MOS tubes and thyristors, but it is not a heating wire used for heating airflow in a conventional hair dryer
  • the so-called thermal connection can be a heat sink 3 is in direct contact with the heating device 2, or the heat sink 3 and the heating device 2 are indirectly contacted through other structures, as long as it can conduct heat.
  • the heat dissipation device 3 is thermally connected to the heating device 2, and the heat on the heating device 2 can be transferred to the heat dissipation device 3; the heat dissipation device 3 is in the air duct, and the heat dissipation device 3 is taken away by the airflow whose temperature is lower than the temperature of the heat dissipation device 3, such as natural wind Therefore, the effect of dissipating heat for the heating device 2 is achieved. That is, the heat dissipation device 3 serves as an auxiliary heat dissipation device for the heating device 2, which can conduct heat from the heating device 2 in a timely and efficient manner, ensure that the main control board and other structures can operate normally, and extend the service life of the product. It solves the problem that the main control board in the existing hair dryer can not heat well.
  • multiple sets of heat dissipating devices 3 can be arranged along the air inlet direction.
  • the multiple sets of heat dissipation devices 3 are thermally connected to different heating points on the heating device 2 respectively, and dissipate heat from the different heating points, so that the heat dissipation efficiency is higher.
  • the heating point can be, but is not limited to, the MOS tube and the thyristor element on the main control board.
  • the heat dissipating device 3 includes a base 32 and a plurality of heat sinks 31 arranged on the base 32, and the heat sink 31 is directed from the heating device 2 toward the air inlet end.
  • the radiating fins 31 are arranged obliquely toward the direction of the incoming wind to reduce the wind resistance and noise as much as possible while increasing the heat exchange area with the air flow. That is, the extending direction of the heat sink 31 is opposite to the direction of the air blower, so that the heat sink 31 can contact the airflow at a lower temperature and upstream.
  • the heat sink 31 includes a bottom 311 far from the air inlet end, a top 312 close to the air inlet end, a front side 313 on the windward side, and a rear side 314 on the leeward side.
  • the bottom 311 of the heat sink 31 is arranged on the base 32, and the structure is more stable; the top 312 must be in the air duct 11, and whether other structures are in the air duct 11 depends on actual usage requirements.
  • the top 312 is an inclined surface inclined along the air inlet direction, which reduces wind resistance and noise without affecting heat dissipation.
  • the front side surface 313 is convexly arched, that is, similar to a tile shape, and the airflow is more stable when the inlet wind blows over the front side surface 313, and the noise is low.
  • the connection between the rear side 314 and the top 312 is a curved surface, that is, the rear side 314 and the top 312 are smoothly transitioned to prevent the wind from being blocked at the connection between the rear side 314 and the top 312.
  • a stepped surface 321 is provided on the base 32, and the stepped surface 321 is attached to the heating device 2, and the heat conduction efficiency is high. At the same time, the stepped surface 321 can also function as a mutual limit between the base 32 and the heating element 2.
  • the specific shape of the base 32 is not limited, as long as it can efficiently conduct heat for the heating device 2.
  • the base 32 is a fan-shaped structure aligned with the heating point on the heating device 2 or an annular sheet structure aligned with the heating device 2 as a whole.
  • the heat dissipation area is large and the heat dissipation efficiency is high; when it is a fan shape, it is small in size and light in weight, which is conducive to miniaturization and lightness of the hair dryer.
  • the base 32 is directly thermally connected to the heating point on the heating device 2, and the thermal conductivity is higher.
  • the part of the base 32 that is attached to the heating device 2 can transfer heat, but the part that is not attached to the heating device 2 can also quickly conduct the heat in the space around the heating device 2 and also play an auxiliary role.
  • the gap between the heat sink 3 and the heating device 2 is filled with a thermally conductive material, so that the heat sink 3 and the heating device 2 are connected with heat conductivity reliably, and the heat cannot be transferred to the heating device 2 due to the isolation of air.
  • the thermally conductive material can be, but is not limited to, thermally conductive silicone grease, which can ensure efficient heat transfer.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cleaning And Drying Hair (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

一种散热效率高的吹风机，包括机体（1）和设置在机体（1）内的发热器件（2），机体（1）内形成有风道（11），还包括由导热材料制成的散热装置（3），发热器件（2）位于风道（11）外，散热装置（3）与发热器件（2）导热性连接且至少部分地设置于风道（11）内。该散热效率高的吹风机能利用自然风等温度低于散热装置（3）温度的冷风带走散热装置（3）上的热量，从而达到为发热器件（2）散热的效果，解决了现有吹风机中主控板无法良好散热的问题。

Description

散热效率高的吹风机 技术领域
本发明涉及家电技术领域，尤其涉及一种散热效率高的吹风机。
背景技术
吹风机是一种利用风扇旋转鼓动出风来吹干湿物体的家电，其中，用于带动风扇旋转的是电机。
为了提高产品品质、改善用户体验，目前吹风机的电机越来越多地采用无刷电机。但该吹风机也有一些缺点，主要是：无刷电机的主控板(主要是其上的MOS管)发热严重，而且主控板不便于直接放置在风道中(主控板放置在风道中会增加噪音，进风会产生湍流)，导致主控板散热能力不足，进而导致吹风机工作性能不够稳定。
发明内容
本发明的目的在于提出一种主控板散热效果好的散热效率高的吹风机。
为达此目的，本发明采用以下技术方案：
一种散热效率高的吹风机，包括机体和设置在所述机体内的发热器件，所述机体内形成有风道，还包括由导热材料制成的散热装置，所述发热器件位于所述风道外，所述散热装置与所述发热器件导热性连接且至少部分地设置于所述风道内。
特别是，所述散热效率高的吹风机包括多组所述散热装置，多组所述散热装置分别导热性连接在所述发热器件上不同的发热点处。
特别是，所述散热装置包括多片散热片，所述散热片从所述发热器件朝向进风端延伸设置。
特别是，所述散热片包括处于所述风道内的顶部、处于迎风侧的前侧面和 处于背风侧的后侧面，所述顶部为斜面，所述前侧面外凸呈拱形，所述后侧面与所述顶部的连接处为弧面。
特别是，所述散热装置还包括基座，所述散热片的底部设置在所述基座上。
特别是，所述基座呈扇形，扇形的所述基座与所述发热器件上的发热点对齐；或，所述基座呈环形，环形的所述基座与所述发热器件整体对齐。
特别是，所述基座与所述发热器件上的发热点导热性连接。
特别是，在所述基座上设置有台阶面，所述台阶面贴在所述发热器件上。
特别是，在所述散热装置与所述发热器件的间隙中填充有导热材料。
特别是，所述发热器件为MOS管和/或可控硅。
本发明散热效率高的吹风机内设置有由导热材料制成的散热装置，散热装置与发热器件导热性连接且至少部分地设置于风道内，通过自然风等温度低于散热装置温度的气流带走散热装置上的热量，从而达到为发热器件散热的效果，解决了现有吹风机中主控板无法良好散热的问题。
附图说明
图1是本发明具体实施方式提供的散热效率高的吹风机的剖视图；
图2是本发明具体实施方式提供的散热效率高的吹风机的结构示意图之一；
图3是本发明具体实施方式提供的散热效率高的吹风机的结构示意图之二；
图4是本发明具体实施方式提供的散热装置的结构示意图。
图中：
1、机体；2、发热器件；3、散热装置；11、风道；31、散热片；32、基座；311、底部；312、顶部；313、前侧面；314、后侧面；321、台阶面。
具体实施方式
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。
本实施方式公开一种散热效率高的吹风机。如图1至图3所示，该吹风机 包括机体1、设置在机体1内的发热器件2、以及由导热材料制成的散热装置3，该导热材料可以是但不限于是金属。机体1内形成有风道11，发热器件2位于风道11外，散热装置3与发热器件2导热性连接且至少部分地设置于风道11内。其中，发热器件2可以是但不限于是设置有MOS管和可控硅等发热元件的主控板上，但不是常规吹风机中用于为气流加热的加热丝；所谓导热性连接可以是散热装置3与发热器件2直接接触，也可以是散热装置3与发热器件2通过其它结构间接接触，只要是能传导热量即可。
散热装置3与发热器件2导热性连接，发热器件2上的热量能传递到散热装置3上；散热装置3处于风道中，通过自然风等温度低于散热装置3温度的气流带走散热装置3上的热量，从而达到为发热器件2散热的效果。即，散热装置3作为发热器件2的辅助散热装置，能及时高效地导走发热器件2上的热量，确保主控板等结构能正常运行，延长了产品的使用寿命。解决了现有吹风机中主控板无法良好散热的问题。
为了更好地散热，可以沿进风方向设置多组散热装置3。多组散热装置3分别导热性连接在发热器件2上不同的发热点处，分别为不同的发热点散热，散热效率更高。其中，发热点可以是但不限于是主控板上的MOS管和可控硅元件。
散热装置3的具体结构不限，优选的，如图4所示，散热装置3包括基座32和设置在基座32上的多片散热片31，散热片31从发热器件2朝向进风端延伸设置。优选的，散热片31朝着来风方向倾斜设置，在增大与气流的热交换面积的同时尽可能降低风阻，减小噪音。即，散热片31的延伸方向与吹风机的进风方向是逆向的，从而令散热片31能接触到更上游的、更低温的气流。
散热片31包括远离进风端的底部311、靠近进风端的顶部312、处于迎风侧的前侧面313、以及处于背风侧的后侧面314。散热片31的底部311设置在基座32上，结构更稳定；顶部312必然是处于风道11内，其它结构是否处于风道11中则根据实际使用需求而定。
沿进风方向，顶部312与底部311之间的距离逐渐减小，即，顶部312为 顺着进风方向倾斜的斜面，在不影响散热的情况下降低风阻，减小噪音。前侧面313外凸呈拱形，即，类似于瓦片状，进风吹过前侧面313时气流更平稳，噪音低。后侧面314与顶部312的连接处为弧面，即，后侧面314与顶部312光滑过渡连接，避免进风在后侧面314与顶部312的连接处被阻碍。
在基座32上设置有台阶面321，台阶面321贴在发热器件2上，热传导效率高。同时，台阶面321也能在基座32和发热器件2之间起到相互限位的作用。
基座32的具体形状不限，能为发热器件2高效导热即可。优选的，基座32为与发热器件2上发热点对齐的扇形或与发热器件2整体对齐的环形的片状结构。为环形时，散热面积大，散热效率高；为扇形时，体积小、重量轻，有利于吹风机实现小型化和轻型化。优选的，基座32直接与发热器件2上的发热点导热性连接，导热效率更高。
基座32上不但与发热器件2相贴合的部分能传到热量，其不与发热器件2相贴合的部分亦能将发热器件2周围空间中的热量快速导走，同样也起到了辅助发热器件2散热的作用。
在上述结构的基础上，在散热装置3与发热器件2的间隙中填充有导热材料，令散热装置3与发热器件2可靠地导热性连接，避免因空气的隔离导致发热器件2上热量无法传递到散热装置3上。该导热材料可以为但不限于为导热硅脂，能保证高效地传递热量即可。
注意，上述仅为本发明的较佳实施例及所运用的技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。

Claims (10)

  1. 一种散热效率高的吹风机，包括机体(1)和设置在所述机体(1)内的发热器件(2)，所述机体(1)内形成有风道(11)，其特征在于，还包括由导热材料制成的散热装置(3)，所述发热器件(2)位于所述风道(11)外，所述散热装置(3)与所述发热器件(2)导热性连接且至少部分地设置于所述风道(11)内。
  2. 根据权利要求1所述的散热效率高的吹风机，其特征在于，所述散热效率高的吹风机包括多组所述散热装置(3)，多组所述散热装置(3)分别导热性连接在所述发热器件(2)上不同的发热点处。
  3. 根据权利要求1所述的散热效率高的吹风机，其特征在于，所述散热装置(3)包括多片散热片(31)，所述散热片(31)从所述发热器件(2)朝向进风端延伸设置。
  4. 根据权利要求3所述的散热效率高的吹风机，其特征在于，所述散热片(31)包括处于所述风道(11)内的顶部(312)、处于迎风侧的前侧面(313)和处于背风侧的后侧面(314)，所述顶部(312)为斜面，所述前侧面(313)外凸呈拱形，所述后侧面(314)与所述顶部(312)的连接处为弧面。
  5. 根据权利要求4所述的散热效率高的吹风机，其特征在于，所述散热装置(3)还包括基座(32)，所述散热片(31)的底部(311)设置在所述基座(32)上。
  6. 根据权利要求5所述的散热效率高的吹风机，其特征在于，所述基座(32)呈扇形，扇形的所述基座(32)与所述发热器件(2)上的发热点对齐；或，所述基座(32)呈环形，环形的所述基座(32)与所述发热器件(2)整体对齐。
  7. 根据权利要求6所述的散热效率高的吹风机，其特征在于，所述基座(32)与所述发热器件(2)上的发热点导热性连接。
  8. 根据权利要求5所述的散热效率高的吹风机，其特征在于，在所述基座 (32)上设置有台阶面(321)，所述台阶面(321)贴在所述发热器件(2)上。
  9. 根据权利要求1至8中任一项所述的散热效率高的吹风机，其特征在于，在所述散热装置(3)与所述发热器件(2)的间隙中填充有导热材料。
  10. 根据权利要求1至8中任一项所述的散热效率高的吹风机，其特征在于，所述发热器件(2)为MOS管和/或可控硅。
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