CN202840475U - Device of preventing household electrical appliance from burning - Google Patents
Device of preventing household electrical appliance from burning Download PDFInfo
- Publication number
- CN202840475U CN202840475U CN 201220412490 CN201220412490U CN202840475U CN 202840475 U CN202840475 U CN 202840475U CN 201220412490 CN201220412490 CN 201220412490 CN 201220412490 U CN201220412490 U CN 201220412490U CN 202840475 U CN202840475 U CN 202840475U
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- China
- Prior art keywords
- household electrical
- sensor
- electrical appliance
- charging capacitor
- control circuit
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a device of preventing household electrical appliance from burning, which can guarantee that the power supply of a whole machine can be cut off in time in an abnormal situation and prevent faults, such as temperature increment, smog, etc., from deteriorating continuously to cause open fire. The device of preventing household electrical appliance from burning comprises a temperature sensor, a smog sensor, a sensor, a relay protection control circuit and a charging capacitor circuit; the temperature sensor, the smog sensor and the charging capacitor circuit are connected with the sensor and the relay protection control circuit separately, the sensor and the relay protection control circuit are connected with a relay switch, and the charging capacitor circuit is connected with a household electrical appliance whole machine circuit.
Description
Technical field
The utility model relates to a kind of device that prevents the household electrical appliance burning.
Background technology
Household electrical appliance (such as colour TV, refrigerator, air-conditioning, washing machine etc.) are because circuit is aging or other failure factors may cause the heating burning.At present safeguard commonly used is 1) use fire proofing, 2) increase heat dispersion, 3 during design) improve reliability design index request, 4) have in some products and increased overheating protection circuit, can break-off when circuit temperature is unusual.In addition, require the user to note condition and method that product uses, note being placed in ventilation and heat good and do not have other should fire near the etc. of article.But even so, still have many household electrical appliances generation pyrophoricity accidents every year, have much also to cause fire, Burning Down The House furniture, even cause personal injury.Main cause is, circuit cisco unity malfunction after fault occurs, and power supply can't cut off, and causes heating and burning to continue, and finally causes naked light, makes above-mentioned these safeguard procedures also lose it and prevents the effect of burning.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of power supply that guarantees can in time cut off complete machine under abnormal conditions, prevent that temperature from raising or the faults such as smog continue to worsen the device that prevents the household electrical appliance burning that produces naked lights.
The technical scheme that addresses the above problem is provided with: this device that prevents the household electrical appliance burning; comprise temperature sensor, Smoke Sensor, transducer and relay protection control circuit, charging capacitor circuit; temperature sensor, Smoke Sensor, charging capacitor circuit are connected respectively to transducer and relay protection control circuit; transducer and relay protection control circuit are connected to relay switch, and the charging capacitor circuit is connected to the household electrical appliances circuitry.
When the household electrical appliances circuitry breaks down; owing to having increased the charging capacitor circuit; can continue as transducer and the relay protection control circuit provides power supply by electric capacity; when temperature sensor, Smoke Sensor detect temperature or smog and exceed standard; transducer and the action of relay protection control circuit; the block system relay switch, thus guarantee under abnormal conditions, can in time cut off complete machine power supply, prevent that temperature from raising or the faults such as smog continue to worsen and produce naked lights.
Description of drawings
Fig. 1 is the circuit theory diagrams that prevent the device of household electrical appliance burning of the present utility model.
Embodiment
As shown in Figure 1; this device that prevents the household electrical appliance burning; comprise temperature sensor, Smoke Sensor, transducer and relay protection control circuit, charging capacitor circuit; temperature sensor, Smoke Sensor, charging capacitor circuit are connected respectively to transducer and relay protection control circuit; transducer and relay protection control circuit are connected to relay switch, and the charging capacitor circuit is connected to the household electrical appliances circuitry.And complete machine power supply line, relay switch, household electrical appliances circuitry generally connect successively.
When the household electrical appliances circuitry breaks down; owing to having increased the charging capacitor circuit; can continue as transducer and the relay protection control circuit provides power supply by electric capacity; when temperature sensor, Smoke Sensor detect temperature or smog and exceed standard; transducer and the action of relay protection control circuit; the block system relay switch, thus guarantee under abnormal conditions, can in time cut off complete machine power supply, prevent that temperature from raising or the faults such as smog continue to worsen and produce naked lights.
Preferably, the charging capacitor circuit is connected to the household electrical appliances circuitry by diode.When normal operation; the 5V(of circuitry or 12V) power supply charges to charging capacitor by diode; capacitance can be selected as required; charging process is unidirectional; the energy that stores on the assurance electric capacity; can not discharge by circuitry, this electric capacity is also received on the power supply of protection control circuit.During normal operation, the protection control circuit also is 5V(or 12V by circuitry) power supply provides by diode, can not use the electric energy of charging capacitor storage.Only have the circuitry of working as to break down, when losing normal power supply voltage, because diode is one-way conduction, electric energy on the electric capacity can not be discharged into mainboard, and transducer and control circuit still can be kept by the electric energy that electric capacity provides the work of a period of time, in the meantime as detect temperature and smog numerical value exceeds standard, just cut off complete machine by relay switch and power, avoid fault to worsen and cause naked light, prevent that household electrical appliances from hindering for some reason and the accident of burning thereby play.
Preferably, Smoke Sensor and temperature sensor are placed on the position that the circuitry plate needs most detection, and transducer and relay protection control circuit and charging capacitor circuit design and are designed with overvoltage crowbar and protect this partial circuit in place.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment all still belong to the protection range of technical solutions of the utility model.
Claims (2)
1. device that prevents household electrical appliance burnings; it is characterized in that: comprise temperature sensor, Smoke Sensor, transducer and relay protection control circuit, charging capacitor circuit; temperature sensor, Smoke Sensor, charging capacitor circuit are connected respectively to transducer and relay protection control circuit; transducer and relay protection control circuit are connected to relay switch, and the charging capacitor circuit is connected to the household electrical appliances circuitry.
2. the device that prevents household electrical appliance burnings according to claim 1, it is characterized in that: the charging capacitor circuit is connected to the household electrical appliances circuitry by diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220412490 CN202840475U (en) | 2012-08-20 | 2012-08-20 | Device of preventing household electrical appliance from burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220412490 CN202840475U (en) | 2012-08-20 | 2012-08-20 | Device of preventing household electrical appliance from burning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202840475U true CN202840475U (en) | 2013-03-27 |
Family
ID=47952091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220412490 Expired - Fee Related CN202840475U (en) | 2012-08-20 | 2012-08-20 | Device of preventing household electrical appliance from burning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202840475U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175024A (en) * | 2016-07-20 | 2016-12-07 | 柳州六品科技有限公司 | A kind of power-off protection type intelligent electric blowing |
-
2012
- 2012-08-20 CN CN 201220412490 patent/CN202840475U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106175024A (en) * | 2016-07-20 | 2016-12-07 | 柳州六品科技有限公司 | A kind of power-off protection type intelligent electric blowing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20150820 |
|
| EXPY | Termination of patent right or utility model |