CN2144434Y - 恒温写字台板 - Google Patents

恒温写字台板 Download PDF

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Publication number
CN2144434Y
CN2144434Y CN 92235367 CN92235367U CN2144434Y CN 2144434 Y CN2144434 Y CN 2144434Y CN 92235367 CN92235367 CN 92235367 CN 92235367 U CN92235367 U CN 92235367U CN 2144434 Y CN2144434 Y CN 2144434Y
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China
Prior art keywords
constant temperature
heating
temperature
plate
platen
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Expired - Fee Related
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CN 92235367
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English (en)
Inventor
张烈培
吴忠仁
段传友
王传国
沈国祥
陈智勇
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ELECTRONIC EQUIPMENT FACTORY OF YUEYANG SECOND NORMAL SCHOOL
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ELECTRONIC EQUIPMENT FACTORY OF YUEYANG SECOND NORMAL SCHOOL
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Application filed by ELECTRONIC EQUIPMENT FACTORY OF YUEYANG SECOND NORMAL SCHOOL filed Critical ELECTRONIC EQUIPMENT FACTORY OF YUEYANG SECOND NORMAL SCHOOL
Priority to CN 92235367 priority Critical patent/CN2144434Y/zh
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Publication of CN2144434Y publication Critical patent/CN2144434Y/zh
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Abstract

一种恒温写字台板,由玻璃板、发热板、底板及电 源组成,其特征是发热板由PTC陶瓷发热芯片及铝 板组成。本实用新型具有随环境温度自动调节发热 量,自动限温、恒温的功能,可节约用电,且使用寿命 长。

Description

本实用新型涉及一种写字台板,特别是一种电热恒温写字台板。
现有电热台板是利用传统电阻丝发热,存在升温慢,发热量不随周围环境温度自动调节,没有自动定温和限温功能,电阻丝表面易氧化,寿命不可靠等缺点。
本实用新型的目的在于提供一种具有自动限温、恒温功能,且使用寿命长的电热恒温写字台板。
本实用新型的目的是这样实现的:由玻璃板、发热板、底板及电源组成,其发热板由PTC陶瓷发热芯片及铝板组成,在发热板与玻璃之有绝缘性能好,传热效率高的布质材料。
本实用新型由于采用PTC陶瓷发热芯片作发热板,因而具有随环境温度自动调节发热量,自动限温、恒温的功能,在环境温度较高时(15℃),其表面温度在50±5℃,功耗只有/15W,在环境温度较低时(0℃以下),其表面温度在50±5℃,功耗只达20~30W,节省用电,且使用寿命长。
附图1为本实用新型剖面示意图;
附图2为本实用新型发热板平面示意图。
下面结合附图对本实用新型作进一步说明。
在玻璃板1下面有绝缘性好、传热率高的绒布2,玻璃板宜采用钢化玻璃,绒布下面为铝板3,铝板上有由瓷夹固定的PTC陶瓷发热芯片,瓷夹呈孔状,将芯片置于孔中,PTC发热芯片的数量根据需要设定,均匀分布在铝板上,各个芯片由导线连接接入电源,底板4可采用木质材料制成为底座形式,将玻璃板、铝板等卡入其中。

Claims (3)

1、一种恒温写字台板,由玻璃板、发热板、底板及电源组成,其特征在于其发热板由PTC陶瓷发热芯片及铝板组成。
2、根据权利要求1所述的恒温写字台板,其特征在于所述的玻璃板与发热板之间有绝缘性能好、传热效率高的布。
3、根据权利要求1所述的恒温写字台板,其特征在于所述的PTC陶瓷发热芯片由瓷夹固定在铝板上。
CN 92235367 1992-11-24 1992-11-24 恒温写字台板 Expired - Fee Related CN2144434Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 92235367 CN2144434Y (zh) 1992-11-24 1992-11-24 恒温写字台板

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 92235367 CN2144434Y (zh) 1992-11-24 1992-11-24 恒温写字台板

Publications (1)

Publication Number Publication Date
CN2144434Y true CN2144434Y (zh) 1993-10-27

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ID=33777153

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 92235367 Expired - Fee Related CN2144434Y (zh) 1992-11-24 1992-11-24 恒温写字台板

Country Status (1)

Country Link
CN (1) CN2144434Y (zh)

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