CN2453366Y

CN2453366Y - Delay alarming device for refrigerator door opening

Info

Publication number: CN2453366Y
Application number: CN 00263751
Authority: CN
Inventors: 施德门; 斯迪克; 李国仕
Original assignee: Anhui Boxihua Refrigeration Co ltd
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd
Priority date: 2000-12-05
Filing date: 2000-12-05
Publication date: 2001-10-10
Anticipated expiration: 2010-12-05

Abstract

The utility model discloses a delay alarming device for opening a refrigerator door, comprising a hall inductive switch, a single chip microcomputer, a buzzer, and a magnet, wherein, a conducting wire of the hall inductive switch is connected with an input port of the single chip microcomputer, an output port of which is connected with the buzzer, and the hall inductive switch and the magnet are respectively arranged at corresponding positions of the outer side of a refrigerator cabinet liner and the inner side of a refrigerator door liner. The structure causes that when the refrigerator door is opened, the hall inductive switch is in the off state, and the single chip microcomputer controls the buzzer to sound to remind a user to tightly close the refrigerator door; the purposes of better preserving foods and saving energy can be achieved.

Description

Refrigerator open delayed alarm device

The utility model relates to a kind of refrigerator warning device, especially can discern the refrigerator open delayed alarm device whether refrigerator doors fastens.

Refrigerator is the instrument of a kind of storage and frozen food, it needs the user to fasten refrigerator doors in use, if in use forgetting refrigerator doors, the user fastens, not only make the food in the refrigerator can not get fresh-keeping, and waste electric energy, at present, the refrigerator of selling on the market does not have to remind the user to fasten the warning device of refrigerator doors, and does not sell associated equipment on the market yet.

The purpose of this utility model provides a kind of refrigerator warning device with refrigerator open delayed alarm function, the user forgets that refrigerator is reported to the police automatically, buzzer call when fastening refrigerator doors in using the refrigerator process, provide alarm signal, remind the user in time to fasten refrigerator doors.

For achieving the above object, refrigerator open delayed alarm device of the present utility model is made up of hall sensing switch, single-chip microcomputer, buzzer and magnet, the lead of hall sensing switch links to each other with input of single chip, single machine output end links to each other with buzzer, and magnet and hall sensing switch are separately positioned on the relative position of the refrigerator body inner bag outside and refrigerator doors inner bag inboard.

When distance is in the 0-2mm scope between magnet and the hall sensing switch, the hall sensing switch conduction, when distance was greater than 2mm between magnet and the hall sensing switch, the hall sensing switch disconnected.

After adopting such structure, when refrigerator doors was closed, hall sensing switch and magnet distance were very near, and the hall sensing switch is conducting state, when refrigerator doors is opened, distance increases between hall sensing switch and the magnet, and the hall sensing switch is off-state, and it passes to single-chip microcomputer with this signal, the Single-chip Controlling buzzer, when single-chip microcomputer detected this state and surpassed the delay time of setting, buzzer call provided alarm signal.

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is a graphical symbol of the present utility model;

Fig. 3 is a signal flow graph of the present utility model;

Fig. 4 is an embodiment of the present utility model.

Refrigerator open delayed alarm device shown in Figure 1 is made up of hall sensing switch 1, single-chip microcomputer 3, buzzer 4 and magnet 2, the lead of hall sensing switch 1 links to each other with the input port of single-chip microcomputer 3, the output of single-chip microcomputer 3 links to each other with buzzer, and magnet and hall sensing switch are arranged on relative position.

The operation principle of hall sensing switch shown in Figure 2, be that distance between hall sensing switch 1 and the magnet 2 is when very near, the attraction of magnet 2 is very big, hall sensing switch 1 is conducting state, when the distance between hall sensing switch 1 and the magnet 2 increases, the attraction of 2 pairs of hall sensing switches 1 of magnet reduces to very little, and hall sensing switch 1 is off-state.

Hall sensing switch 1 shown in Figure 3 passes to single-chip microcomputer 3 with signal, single-chip microcomputer 3 control buzzers 4.Software program in the single-chip microcomputer 3 of the present utility model has also been set the occurrence of the time-delay of opening the door, and this occurrence can be set any number, and for example 3 minutes, 5 minutes, 8 minutes etc., when the time that refrigerator doors is opened surpassed this setting value, buzzer 4 piped.

That shown in Figure 4 is a refrigerator open delayed alarm device embodiment, hall sensing switch 1 is installed in the middle of the lower limb in the freezer compartment of refrigerator inner bag outside, magnet 2 is installed in the middle of the interior inboard lower limb of refrigerating chamber, both positions are corresponding, buzzer can be arranged on and the same side position of hall sensing switch, when refrigerating chamber door is closed, distance between magnet 2 and the hall sensing switch 1 is in the scope of 0-2mm, hall sensing switch 1 is conducting state, it passes to single-chip microcomputer 3 with this signal, buzzer by single-chip microcomputer 3 controls does not pipe for 4 this moments, when refrigerator doors is opened, distance is greater than 2mm between hall sensing switch and the magnet, hall sensing switch 1 is off-state, and this signal is passed to single-chip microcomputer 3, when the time that refrigerator doors is opened surpasses the occurrence of setting, buzzer 4 by single-chip microcomputer 3 controls pipes, and provides alarm signal.

Described in the utility model is a kind of refrigerator open delayed alarm device, so the position of hall sensing switch 1 and magnet 2 not necessarily is placed on position shown in Figure 4, as long as hall sensing switch 1 and magnet 2 are placed on corresponding position, be placed on refrigerating chamber, refrigerating chamber is implemented to open the door delayed alarm, if hall sensing switch 1 and magnet 2 are placed on refrigerating chamber, can implement to open the door delayed alarm to refrigerating chamber.

Claims

1. refrigerator open delayed alarm device, it is characterized in that: it comprises hall sensing switch (1), single-chip microcomputer (3), buzzer (4) and magnet, the lead of hall sensing switch (1) links to each other with the input port of single-chip microcomputer (3), the output port of single-chip microcomputer (3) links to each other with buzzer (4), and magnet (2) and hall sensing switch (1) are separately positioned on the relative position of the refrigerator body inner bag outside and refrigerator doors inner bag inboard.

2. refrigerator open delayed alarm device according to claim 1 is characterized in that: when refrigerator doors was closed, distance was within the 0-2mm scope between magnet (2) and the hall sensing switch (1).

3. refrigerator open delayed alarm device according to claim 1, it is characterized in that: described hall sensing switch (1), single-chip microcomputer (3) are separately positioned on refrigerator body inner bag outer ledge with buzzer (4), and magnet (2) is arranged on refrigerator doors inner bag inside edge.

4. refrigerator open delayed alarm device according to claim 1, it is characterized in that: described hall sensing switch (1), single-chip microcomputer (3) are separately positioned on refrigerator doors inner bag inside edge with buzzer (4), and magnet (2) is arranged on refrigerator body inner bag outer ledge.