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Reliable device for reminding refrigerator doors to be open

A technology for reminding devices and refrigerators, which can be used in household refrigeration devices, lighting and heating equipment, household appliances, etc., can solve problems such as power waste, and achieve the effect of preventing food from thawing or deteriorating

Inactive Publication Date: 2019-11-19
何林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After installing and using the present invention, as long as the refrigerator door is opened for more than 35 seconds, the buzzer in the refrigerator door-opening reliable warning device will keep ringing, which basically prevents the food refrigerated in the refrigerator from thawing or deteriorating due to the long-time door opening and other problems, as well as the phenomenon of power waste caused by the compressor being in operation for a long time

Method used

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  • Reliable device for reminding refrigerator doors to be open

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Embodiment Construction

[0016] According to attached figure 1 The schematic diagram and description of the circuit of the refrigerator door-opening reliable reminder device are shown, and the connection relationship between the components in each part of the circuit described in the summary of the invention, as well as the technical parameter requirements of the components and the circuit described in the implementation mode The present invention can be realized by making the main points and carrying out implementation. The related technologies of the present invention will be further described below in conjunction with the embodiments.

[0017] Technical parameters of components and their selection requirements

[0018] VT1 is an NPN transistor, the selected model is BC557, or 2SC9013;

[0019] D1~D3 are silicon rectifier diodes, the selected model is 1N4001;

[0020] SCR is a one-way silicon controlled rectifier, and the selected model is BT169;

[0021] All resistors use RTX-1 / 4W type metal fil...

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Abstract

The invention discloses a reliable device for reminding refrigerator doors to be open. The reliable device comprises a 12 V direct-current power supply, a gate control switch, a potential balance circuit, a time delay circuit, an unbalance signal amplification circuit, and a unidirectional silicon controlled trigger and control circuit. The reliable device is only made of a small number of discrete electronic elements, and after the refrigerator doors are opened for dozens of seconds, a user can be reminded to close the refrigerator doors in time through a sound mode. The reliable reminding device aims at the refrigerator doors being opened for a long time or the refrigerator doors being irrelevant. After installing and using the reliable reminding device, as long as the time for opening the refrigerator doors exceeds 35 seconds, a buzzer in the reliable device for reminding the refrigerator doors to be open can sound continuously, so that the problems of defrosting or deteriorating and the like of food refrigerated in a refrigerator due to the fact that the refrigerator doors are opened for a long time and the waste of electric power and the like due to the fact that a compressoris in a running state for a long time are basically solved.

Description

technical field [0001] The invention belongs to the technical field of electronic control, and relates to a reliable reminding device for opening the door of a refrigerator. Background technique [0002] There are some refrigerators in the market that are not equipped with reminders for forgetting to close the door or opening the door for a long time. When the refrigerator forgets to close the refrigerator door in time after storing food, it will waste electricity and cause the food refrigerated in the refrigerator to thaw or deteriorate; If it is serious, it will cause loss and affect the life of the compressor; the reliable reminder device for opening the door of the refrigerator according to the invention is only made of a small amount of discrete electronic components, which can remind the user to turn off the refrigerator in time after opening the door for tens of seconds. refrigerator door. The invention is a reliable reminding device aimed at the door of a certain re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D29/00
CPCF25D29/008
Inventor 何林
Owner 何林
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