CN2119620U - Automatic alarm for closing door of refrigerator - Google Patents
Automatic alarm for closing door of refrigerator Download PDFInfo
- Publication number
- CN2119620U CN2119620U CN 92213080 CN92213080U CN2119620U CN 2119620 U CN2119620 U CN 2119620U CN 92213080 CN92213080 CN 92213080 CN 92213080 U CN92213080 U CN 92213080U CN 2119620 U CN2119620 U CN 2119620U
- Authority
- CN
- China
- Prior art keywords
- circuit
- refrigerator
- door
- closing
- autoalarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The utility model relates to an automatic alarm for closing the door of a refrigerator, which belongs to a signal alarming device, particularly an alarming device for a domestic appliance. The utility model is composed of a rectification circuit, a delay circuit, an audio-frequency generating circuit and an acoustic apparatus, additional batteries are not needed, and the electricity is directly supplied by the alternating current in the refrigerator. The supply of the electricity is controlled by a push-button switch controlling the action of the opening and the closing of the door of the refrigerator. The automatic alarm has simple structure and low cost, and the alarm signal can be sent out after the delaying of the time when the door of the refrigerator is opened.
Description
The utility model belongs to signalling alarm equipment, particularly relates to a kind of household electrical appliance signalling alarm equipment.
Existing refrigerator warning device, for example big vast scholar covers in the patent " refrigerator music alarm " of application on November 14th, 1988, application number is 88217702.8, this alarm is made of photosensitive receiving tube, integrated music sheet, output triode, loudspeaker, light emitting diode and battery, and its shortcoming is the need battery, used components and parts are many, cost is high, no time-delay mechanism.
The purpose of this utility model be to provide a kind of simple in structure, cost is low, refrigerator that can delayed alarm is closed the door autoalarm.
The utility model is to solve by following technical scheme: rectification circuit of serial connection in refrigerator illuminating lamp loop makes audio generating circuit work and sends warning through one section time-delay after the rectification circuit work.The refrigerator autoalarm of closing the door, comprise rectification circuit (1), delay circuit (2), audio generating circuit (3) and microphone device (4), rectification circuit (1) provides a triggering signal to delay circuit (2), audio generating circuit (3) and microphone device (4) power supply, delay circuit (2) to audio generating circuit (3) after the alternating current in the refrigerator is become direct current, and audio generating circuit (3) produces an audio signal and outputs to microphone device (4).
Delay circuit (2) is by resistance R
1, capacitor C
2The rc-delay circuit that series connection constitutes.Audio generating circuit (3) is a language IC.Microphone device (4) is a loudspeaker.
Output at rectification circuit (1) is connected to mu balanced circuit and filter circuit.
When opening door of refrigerator, the button switch K of refrigerator itself is connected, and refrigerator illuminating lamp L lights, and exchanges 220 volts of bridge rectifier D in being serially connected in the illuminating lamp loop
1～D
4Be added to after the rectification on delay circuit, audio generating circuit and the microphone device, direct current is through resistance R
1Give capacitor C
2Charging is through one section time-delay, capacitor C
2On voltage rise to and trigger audio generating circuit work, and export an audio signal, loudspeaker is sounded, finishing closes the door reports to the police automatically.
The utility model structure is very simple, only need rectification circuit is serially connected in the refrigerator illuminating lamp loop, need not to add in addition battery, the control of the button switch K of moving when the work of rectification circuit is subjected to refrigerator open and close door, use easy to operate, cost is lower than existing similar alarm, and alarm signal can be opened the door at refrigerator, and afterwards time-delay a period of time sends.
Fig. 1 is the close the door block diagram of autoalarm of refrigerator.
Fig. 2 is the close the door circuit theory diagrams of autoalarm of refrigerator.
Embodiment:
Terminals C, D connect and exchange 220 volts, and the input A of bridge rectifier is connected with terminals C by button switch K, illuminating lamp L, and another input B of bridge rectifier directly is connected with terminals D.
Between the output of bridge rectifier, be connected to Zener diode D
5, filter capacitor C
1, resistance R
1With capacitor C
2Series arm, IC.Loudspeaker Y is connected between the output of positive source and IC.
Diode D
1～D
4Be IN4006, Zener diode D
5Be 2CW53.
Resistance R
1Be 30K Ω, capacitor C
1, C
2Be respectively 200 μ F, 47 μ F.
The language integrated circuit is HFC5200, and loudspeaker Y is YD50.
Claims (7)
1, the refrigerator autoalarm of closing the door, it is characterized in that having rectification circuit (1), delay circuit (2), audio generating circuit (3) and microphone device (4), rectification circuit (1) is powered to delay circuit (2), audio generating circuit (3) and microphone device (4) after the alternating current in the refrigerator is become direct current, delay circuit (2) provides a triggering signal to audio generating circuit (3), and audio generating circuit (3) produces an audio signal and outputs to microphone device (4).
2, the refrigerator according to claim 1 autoalarm of closing the door is characterized in that the output of rectification circuit (1) is connected to mu balanced circuit.
3, the refrigerator according to claim 1 autoalarm of closing the door is characterized in that being connected to filter circuit at the output of rectification circuit (1).
4, the refrigerator according to claim 1 autoalarm of closing the door is characterized in that delay circuit (2) is by resistance R
1, capacitor C
2The rc-delay circuit that series connection constitutes.
5, the refrigerator according to claim 1 autoalarm of closing the door is characterized in that audio generating circuit (3) is a language IC.
6, according to claim 1 and the 5 described refrigerators autoalarm of closing the door, it is characterized in that audio generating circuit (3) is language integrated circuit HFC5200.
7, the refrigerator according to claim 1 autoalarm of closing the door is characterized in that microphone device (4) is a loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92213080 CN2119620U (en) | 1992-01-14 | 1992-01-14 | Automatic alarm for closing door of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92213080 CN2119620U (en) | 1992-01-14 | 1992-01-14 | Automatic alarm for closing door of refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2119620U true CN2119620U (en) | 1992-10-21 |
Family
ID=4957876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92213080 Pending CN2119620U (en) | 1992-01-14 | 1992-01-14 | Automatic alarm for closing door of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2119620U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401544A (en) * | 2011-12-08 | 2012-04-04 | 合肥美的荣事达电冰箱有限公司 | Refrigerator with door opening delay alarm |
| WO2014028764A1 (en) * | 2012-08-16 | 2014-02-20 | Illinois Tool Works Inc. | Modulated audio annunciator providing stand-alone high voltage compatibility |
| CN103673496A (en) * | 2012-09-14 | 2014-03-26 | 海尔集团公司 | Refrigerator |
| CN106054623A (en) * | 2016-05-31 | 2016-10-26 | 北京小米移动软件有限公司 | Method and device for electric appliance closing reminding |
| CN109979166A (en) * | 2019-03-28 | 2019-07-05 | 黄月华 | Refrigerator doors forget shutdown delay pattern alarm device |
| CN110260589A (en) * | 2019-06-24 | 2019-09-20 | 黄月华 | Refrigerator forgets delay alarm set of closing the door |
-
1992
- 1992-01-14 CN CN 92213080 patent/CN2119620U/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401544A (en) * | 2011-12-08 | 2012-04-04 | 合肥美的荣事达电冰箱有限公司 | Refrigerator with door opening delay alarm |
| WO2014028764A1 (en) * | 2012-08-16 | 2014-02-20 | Illinois Tool Works Inc. | Modulated audio annunciator providing stand-alone high voltage compatibility |
| US9443412B2 (en) | 2012-08-16 | 2016-09-13 | Illinois Tool Works, Inc. | Modulated audio annunciator providing stand-alone high voltage compatibility |
| CN103673496A (en) * | 2012-09-14 | 2014-03-26 | 海尔集团公司 | Refrigerator |
| CN106054623A (en) * | 2016-05-31 | 2016-10-26 | 北京小米移动软件有限公司 | Method and device for electric appliance closing reminding |
| CN109979166A (en) * | 2019-03-28 | 2019-07-05 | 黄月华 | Refrigerator doors forget shutdown delay pattern alarm device |
| CN110260589A (en) * | 2019-06-24 | 2019-09-20 | 黄月华 | Refrigerator forgets delay alarm set of closing the door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |