电冰箱门非严密关闭报警装置

Non-tight closing alarm device for refrigerator door

Abstract

本实用新型提供一种电冰箱门非严密关闭报警装置,涉及家电技术领域,包括:霍尔开关器件、与非门芯片、复位开关、光电耦合开关电路、延时电路、报警器以及磁铁;其中霍尔开关器件与磁铁构成检测电路,而延时电路、报警器、光电耦合开关电路以及复位开关构成报警电路。当电冰箱门打开时,复位开关断开,报警电路断电,从而不发出报警提示音;当冰箱门关闭时,由于挤压复位开关闭合,报警电路导通,如果此时电冰箱门未严密关闭,检测电路控制报警电路开始工作,如果此时电冰箱门严密关闭,报警装置不会发出报警声音。该装置可以在电冰箱门非严密关闭时自动报警,提示使用者重新将电冰箱门关严。
The utility model provides a non-tight closing alarm device for a refrigerator door and relates to the technical field of household appliances. The non-tight closing alarm device for the refrigerator door comprises a hall switch device, a NAND gate chip, a reset switch, a photoelectric coupling switch circuit, a time delay circuit, an alarm and a magnet, wherein the hall switch device and the magnet form a detection circuit; and the time delay circuit, the alarm, the photoelectric coupling switch circuit and the reset switch form an alarm circuit. When the refrigerator door is opened, the reset switch is switched off and the alarm circuit is powered off, so that alarm prompt tone is sent; when the refrigerator door is closed, the reset switch is squeezed and closed and the alarm circuit is switched on; if the refrigerator door is not tightly closed at the moment, the detection circuit is used for controlling the alarm circuit to start working; and if the refrigerator door is tightly closed at the moment, the alarm device is incapable of sending alarm sound. The non-tight closing alarm device for the refrigerator door is capable of automatically alarming when the refrigerator door is not tightly closed and prompting the user to reclose the refrigerator door tightly.

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