WO2018223482A1 - 一种电热容器温度传感器 - Google Patents

一种电热容器温度传感器 Download PDF

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Publication number
WO2018223482A1
WO2018223482A1 PCT/CN2017/092238 CN2017092238W WO2018223482A1 WO 2018223482 A1 WO2018223482 A1 WO 2018223482A1 CN 2017092238 W CN2017092238 W CN 2017092238W WO 2018223482 A1 WO2018223482 A1 WO 2018223482A1
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WO
WIPO (PCT)
Prior art keywords
thermistor
temperature sensor
electric heating
housing
heating container
Prior art date
Application number
PCT/CN2017/092238
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English (en)
French (fr)
Inventor
龙克文
颜天宝
Original Assignee
佛山市程显科技有限公司
佛山市川东磁电股份有限公司
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Application filed by 佛山市程显科技有限公司, 佛山市川东磁电股份有限公司 filed Critical 佛山市程显科技有限公司
Priority to KR1020197006551A priority Critical patent/KR20190031575A/ko
Publication of WO2018223482A1 publication Critical patent/WO2018223482A1/zh

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/08Protective devices, e.g. casings
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor

Definitions

  • the present invention relates to the field of temperature sensing technology, and specifically relates to an electric heating container temperature sensor.
  • the temperature sensor is the core of intelligent control.
  • the temperature sensor used in the electric heating device is generally a top temperature probe, which is used to sense the heat and cooking progress through direct contact with the heater. This top temperature sensor is mostly made of temperature sensitive metal.
  • the housing and the thermistor have a built-in structure, and the leads of the thermistor are taken out from the housing port and sealed with a sealant.
  • the object of the present invention is to provide a reasonable structure and good insulation for the defects and deficiencies of the prior art.
  • the electric heating container temperature sensor with less sealing amount and shortening the production cycle.
  • An electric heating container temperature sensor includes a housing and a thermistor, the housing is a hollow cylindrical structure and one end of the housing is closed, and the housing is provided with a retaining position.
  • the socket, the center of the lower end surface of the retaining socket is provided with a positioning slot, and the thermistor is embedded on the positioning slot to make the thermistor and the end wall of the closed end of the housing be in contact with each other.
  • the vertical socket of the retaining socket is provided with two threading holes, and the upper end of the threading hole penetrates the upper end surface of the retaining socket, and the lower end of the threading hole penetrates with the positioning slot, and the thermistor pin And the lead wire is threaded in the threading hole.
  • the left and right outer sidewalls of the retaining socket are vertically provided with a card slot extending through the corresponding threading hole.
  • the inner cavity of the housing between the upper end surface of the retaining socket and the upper port of the housing is filled with a sealing glue.
  • the upper end of the retaining socket is provided with a central hole, and the central hole and the threading holes on both sides are respectively disposed through.
  • the front and rear outer side walls of the retaining socket are vertically provided with a potting tank.
  • the front and rear sides of the lower end of the retaining socket are provided with dispensing slots, and the two dispensing slots respectively communicate with the positioning slot and the corresponding potting tank.
  • the grounding plate is disposed on the upper port of the casing.
  • the beneficial effects of the invention are as follows:
  • the structure of the invention is reasonable, the fixing socket fixes the thermistor in the central area of the casing and contacts the heat conducting end surface, thereby improving the response speed of the thermistor;
  • the retaining socket constitutes the filling of the inner cavity of the casing Department, reduce the amount of sealant and increase the curing speed, shorten the production cycle;
  • the glue tank on both sides of the retaining socket allows the sealant to penetrate into the bottom of the shell to build an insulating protective layer, the bow I-weld and the bow I line snap into Threading hole
  • the center hole can increase the contact between the sealant and the lead and the soldering portion, and improve the tensile strength and insulation performance of the lead.
  • FIG. 1 is a schematic cross-sectional view showing the entire structure of the present invention.
  • FIG. 2 is a schematic view of the overall exploded structure of the present invention.
  • FIG 3 is a schematic enlarged view of a retaining socket of the present invention.
  • an electric heating container temperature sensor includes a housing 1 and a thermistor 3, wherein the housing 1 is a hollow cylindrical structure and the housing 1 is One end is closed, and the housing 1 is provided with a retaining socket 2, and the center of the lower end of the retaining socket 2 is provided with a positioning slot 21, and the thermistor 3 is embedded in the positioning slot 21 to make the thermistor 3 and the shell
  • the end wall of the closed end of the body 1 is arranged to be in contact with each other; the closed end surface of the casing 1 is a heat conducting surface of the sensor, and the retaining socket 2 adopts a cylindrical structure adapted to the casing 1 to fix the positioning groove on the lower end surface of the socket 2 21 Centering the thermistor 3 on the end face of the casing 1 improves the response speed of the thermistor 3.
  • the fixing socket 2 is provided with two threading holes 22 in the vertical direction.
  • the upper end of the threading hole 22 extends through the upper end surface of the fixing socket 2, and the lower end of the threading hole 22 penetrates with the positioning groove 21, and the thermistor 3
  • the leads and leads 31 are bored in the threading holes 22; the threading holes 22 isolate the pins of the thermistor 3 and the leads 31 from the housing 1 to improve the insulation performance of the sensor after packaging.
  • the left and right outer side walls of the retaining socket 2 are vertically vertically provided with a card slot 23 extending through the corresponding threading hole 22, and the card slot 23 is used for assembling the cymbal and the lead 31 and the lead 31 are inserted into the thread. Hole 22, thereby improving assembly efficiency
  • the inner cavity of the casing 1 between the upper end surface of the retaining socket 2 and the upper port of the casing 1 is filled with a sealant 4; the sealant 4 is poured from the upper port of the casing 1 and constitutes the entire sensor.
  • the insulating package structure, and the sealing glue 4 can be infiltrated into the card opening 23 on both sides of the threading hole 22, thereby forming an insulating package and improving the tensile strength on the outer side of the bow I and the bow I line 31, and the retaining socket 2 can be passed through the above-mentioned retaining socket 2
  • the amount of the sealant 4 is reduced, thereby increasing the curing speed of the sealant 4, thereby shortening the production cycle.
  • the upper end of the retaining socket 2 is provided with a central hole 24, and the central hole 24 and the threading holes 22 of the two sides are respectively disposed through, and the sealing glue 4 is filled in from the upper port of the casing 1 and fills the central hole 24
  • the sealant 4 in the center hole 24 forms an insulating covering structure on the inner side of the arching hole 22 and the inner side of the bowing line 41, and the insulating property of the sensor and the tensile strength of the lead 31;
  • the housing 1 has a small cross section, in the housing 1
  • the sealant 4 on the surface of the upper port 1 is initially cured, and the sealant 4 inside the casing 1 does not have flow and leakage problems, so that the sensor advances to the next step to shorten the production cycle.
  • the front and rear outer side walls of the retaining socket 2 are vertically vertically provided with a potting tank 25, and the sealant 4 penetrates into the bottom of the casing 1 from the potting tank 25 on both sides of the retaining socket 2, thereby wrapping the heat sensitive
  • the resistor 3 pin forms an insulation protection.
  • the front and rear sides of the lower end of the retaining socket 2 are provided with a dispensing groove 26, and the two dispensing grooves 26 respectively communicate with the positioning groove 21 and the corresponding filling tank 25, wherein the dispensing groove 26 is used for irrigation
  • the sealant 4 infiltrated into the glue tank 25 enters the positioning groove 21, so that the sealant 4 is filled between the positioning groove 21 and the thermistor 3, and constitutes the underlying insulation protection of the thermistor 3 pin.
  • the grounding plate 11 is disposed on the upper port of the casing 1.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

一种电热容器温度传感器;包括壳体(1)和热敏电阻(3),壳体(1)为中空的筒形结构且壳体(1)的其中一端为闭口设置,壳体(1)内穿设有固位插座(2),固位插座(2)的下端面中心设有定位槽(21),热敏电阻(3)嵌设于定位槽(21)上进而使热敏电阻(3)与壳体(1)闭口端的端壁抵触设置;固位插座(2)将热敏电阻(3)固定在壳体(1)中心区并与导热端面接触,提高热敏电阻(3)的响应速度;固位插座(2)构成壳体(1)内腔的填充部,减少密封胶的用量和提高固化速度,缩短生产周期;固位插座(2)两侧的灌胶槽(25)使密封胶渗入壳体(1)底端构建绝缘防护层,引脚焊接部和引线(31)卡入穿线孔(22)内,中心孔(24)增加密封胶与引线(31)及焊接部接触,提高引线(31)的抗拉强度和绝缘性能。

Description

发明名称:一种电热容器温度传感器
技术领域
[0001] 本发明涉及温度传感技术领域, 具体指一种电热容器温度传感器。
背景技术
[0002] 随着智能家电设备的兴起, 电热器具上一般配置有各种传感器和微处理终端, 从而实现自行调节火候、 控制烹饪程序的目的。 温度传感器则是智能控制的核 心, 电热器具中所使用的温度传感器一般为顶部感温探头, 通过与加热器皿的 直接接触以感知火候和烹饪进度; 这种顶部感温探头传感器多采用感温金属外 壳和热敏电阻内置结构, 热敏电阻的引线从外壳幵口引出并采用密封胶绝缘处 理。
[0003] 这种封装结构中的热敏电阻与金属外壳之间存在偏置问题, 密封胶的渗入会导 致热敏电阻的响应速度降低, 热敏电阻引脚与引线焊接部靠近金属外壳从而导 致绝缘性不够, 引线在绝缘胶内的埋入深度较少且缺乏固定结构, 引线的抗拉 强度较差; 且金属外壳的内腔空间需要较多的密封胶填充, 导致成本的升高且 需要更长的固化吋间, 难以缩短交货周期和扩大产能。
[0004] 因此, 现有技术还有待于改进和发展。
技术问题
问题的解决方案
技术解决方案
[0005] 本发明的目的在于针对现有技术的缺陷和不足, 提供一种结构合理、 绝缘性好
、 封胶用量少、 可缩短生产周期的电热容器温度传感器。
[0006] 为了实现上述目的, 本发明采用以下技术方案:
[0007] 本发明所述的一种电热容器温度传感器,包括壳体和热敏电阻, 所述壳体为中空 的筒形结构且壳体的其中一端为闭口设置, 壳体内穿设有固位插座, 固位插座 的下端面中心设有定位槽, 热敏电阻嵌设于定位槽上进而使热敏电阻与壳体闭 口端的端壁抵触设置。 [0008] 根据以上方案, 所述固位插座上竖直幵设有两个穿线孔, 穿线孔的上端贯穿固 位插座的上端面, 穿线孔的下端与定位槽贯通,热敏电阻的引脚以及引线穿设于 穿线孔内。
[0009] 根据以上方案, 所述固位插座的左右外侧壁上均竖直幵设有贯通对应穿线孔的 卡线口。
[0010] 根据以上方案, 所述固位插座上端面与壳体上端口之间的壳体内腔中填充有密 封胶。
[0011] 根据以上方案, 所述固位插座上端设有中心孔, 中心孔与两侧的穿线孔分别贯 通设置。
[0012] 根据以上方案, 所述固位插座的前后外侧壁上均竖直幵设有灌胶槽。
[0013] 根据以上方案, 所述固位插座下端的前后两侧均设有点胶槽, 两个点胶槽分别 连通定位槽和对应的灌胶槽。
[0014] 根据以上方案, 所述壳体的上端口上设有接地片。 发明的有益效果
有益效果
[0015] 本发明有益效果为: 本发明结构合理, 固位插座将热敏电阻固定在壳体中心区 并与导热端面接触, 提高热敏电阻的响应速度; 固位插座构成壳体内腔的填充 部, 减少密封胶的用量和提高固化速度, 缩短生产周期; 固位插座两侧的灌胶 槽使密封胶可渗入壳体底端构建绝缘防护层, 弓 I脚焊接部和弓 I线卡入穿线孔内
, 中心孔可增加密封胶与引线及焊接部接触, 提高引线的抗拉强度和绝缘性能
对附图的简要说明
附图说明
[0016] 图 1是本发明的整体剖视结构示意图;
[0017] 图 2是本发明的整体***结构示意图;
[0018] 图 3是本发明的固位插座放大结构示意图。
[0019] 图中:
[0020] 1、 壳体; 2、 固位插座; 3、 热敏电阻; 4、 密封胶; 11、 接地片; 21、 定位槽 ; 22、 穿线孔; 23、 卡线口; 24、 中心孔; 25、 灌胶槽; 26、 点胶槽; 31、 引 线。
实施该发明的最佳实施例
本发明的最佳实施方式
[0021] 下面结合附图与实施例对本发明的技术方案进行说明。
[0022] 如图 1-3所示, 本发明所述的一种电热容器温度传感器,包括壳体 1和热敏电阻 3 , 所述壳体 1为中空的筒形结构且壳体 1的其中一端为闭口设置, 壳体 1内穿设有 固位插座 2, 固位插座 2的下端面中心设有定位槽 21, 热敏电阻 3嵌设于定位槽 21 上进而使热敏电阻 3与壳体 1闭口端的端壁抵触设置; 所述壳体 1的闭口端端面为 传感器的导热面, 固位插座 2采用与壳体 1适配的圆柱体结构, 固位插座 2下端面 上的定位槽 21将热敏电阻 3居中设置在壳体 1的端面上, 可提高热敏电阻 3的响应 速度。
[0023] 所述固位插座 2上竖直幵设有两个穿线孔 22, 穿线孔 22的上端贯穿固位插座 2的 上端面, 穿线孔 22的下端与定位槽 21贯通,热敏电阻 3的引脚以及引线 31穿设于穿 线孔 22内; 所述穿线孔 22将热敏电阻 3的引脚以及引线 31与壳体 1隔离, 从而在 封装后提高传感器的绝缘性能。
[0024] 所述固位插座 2的左右外侧壁上均竖直幵设有贯通对应穿线孔 22的卡线口 23, 所述卡线口 23用于装配吋将弓 I脚以及引线 31***穿线孔 22, 从而提高装配效率
[0025] 所述固位插座 2上端面与壳体 1上端口之间的壳体 1内腔中填充有密封胶 4; 所述 密封胶 4从壳体 1上端口灌入并构成传感器整体的绝缘封装结构, 而穿线孔 22两 侧的卡线口 23内可渗入密封胶 4, 从而对弓 I脚和弓 I线 31外侧构成绝缘封装和提高 抗拉强度, 通过上述的固位插座 2可减少密封胶 4的用量, 从而提高密封胶 4的固 化速度, 进而缩短生产周期。
[0026] 所述固位插座 2上端设有中心孔 24, 中心孔 24与两侧的穿线孔 22分别贯通设置 , 在封装吋密封胶 4从壳体 1上端口灌入并填满中心孔 24, 中心孔 24内的密封胶 4 对两侧穿线孔 22内的弓 I脚以及弓 I线 31内侧构成绝缘包覆结构, 进而传感器的绝 缘性能和引线 31抗拉强度; 综上而言, 由于壳体 1具有较小的横截面, 在壳体 1 上端口 1表面的密封胶 4初步固化, 壳体 1内部的密封胶 4就不会出现流动和渗漏 问题, 从而使传感器提前进入下一步工序以缩短生产周期。
[0027] 所述固位插座 2的前后外侧壁上均竖直幵设有灌胶槽 25, 密封胶 4从固位插座 2 两侧的灌胶槽 25渗入壳体 1底部, 从而包裹热敏电阻 3引脚构成绝缘保护。
[0028] 所述固位插座 2下端的前后两侧均设有点胶槽 26, 两个点胶槽 26分别连通定位 槽 21和对应的灌胶槽 25, 所述点胶槽 26用于灌胶槽 25内渗入的密封胶 4进入定位 槽 21, 从而使密封胶 4填充在定位槽 21和热敏电阻 3之间, 构成热敏电阻 3引脚的 底层绝缘防护。
[0029] 所述壳体 1的上端口上设有接地片 11。
[0030] 以上所述仅是本发明的较佳实施方式, 故凡依本发明专利申请范围所述的构造 、 特征及原理所做的等效变化或修饰, 均包括于本发明专利申请范围内。

Claims

权利要求书
[权利要求 1] 一种电热容器温度传感器,包括壳体 (1) 和热敏电阻 (3) , 其特征 在于: 所述壳体 (1) 为中空的筒形结构且壳体 (1) 的其中一端为闭 口设置, 壳体 (1) 内穿设有固位插座 (2) , 固位插座 (2) 的下端 面中心设有定位槽 (21) , 热敏电阻 (3) 嵌设于定位槽 (21) 上进 而使热敏电阻 (3) 与壳体 (1) 闭口端的端壁抵触设置。
[权利要求 2] 根据权利要求 1所述的电热容器温度传感器, 其特征在于: 所述固位 插座 (2) 上竖直幵设有两个穿线孔 (22) , 穿线孔 (22) 的上端贯 穿固位插座 (2) 的上端面, 穿线孔 (22) 的下端与定位槽 (21) 贯 通,热敏电阻 (3) 的引脚以及引线 (31) 穿设于穿线孔 (22) 内。
[权利要求 3] 根据权利要求 2所述的电热容器温度传感器, 其特征在于: 所述固位 插座 (2) 的左右外侧壁上均竖直幵设有贯通对应穿线孔 (22) 的卡 线口 (23) 。
[权利要求 4] 根据权利要求 1所述的电热容器温度传感器, 其特征在于: 所述固位 插座 (2) 上端面与壳体 (1) 上端口之间的壳体 (1) 内腔中填充有 密封胶 (4) 。
[权利要求 5] 根据权利要求 4所述的电热容器温度传感器, 其特征在于: 所述固位 插座 (2) 上端设有中心孔 (24) , 中心孔 (24) 与两侧的穿线孔 (2 2) 分别贯通设置。
[权利要求 6] 根据权利要求 4所述的电热容器温度传感器, 其特征在于: 所述固位 插座 (2) 的前后外侧壁上均竖直幵设有灌胶槽 (25) 。
[权利要求 7] 根据权利要求 5所述的电热容器温度传感器, 其特征在于: 所述固位 插座 (2) 下端的前后两侧均设有点胶槽 (26) , 两个点胶槽 (26) 分别连通定位槽 (21) 和对应的灌胶槽 (25) 。
[权利要求 8] 根据权利要求 1所述的电热容器温度传感器, 其特征在于: 所述壳体
( 1) 的上端口上设有接地片 (11) 。
PCT/CN2017/092238 2017-06-07 2017-07-07 一种电热容器温度传感器 WO2018223482A1 (zh)

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