CN2031971U - Safety automatic controller for electricity-consuming appliances - Google Patents
Safety automatic controller for electricity-consuming appliances Download PDFInfo
- Publication number
- CN2031971U CN2031971U CN 88200656 CN88200656U CN2031971U CN 2031971 U CN2031971 U CN 2031971U CN 88200656 CN88200656 CN 88200656 CN 88200656 U CN88200656 U CN 88200656U CN 2031971 U CN2031971 U CN 2031971U
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- CN
- China
- Prior art keywords
- automatic controller
- electrical
- electrical appliance
- safety automatic
- leakage
- 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.)
- Expired - Lifetime
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a safety automatic controller for electric appliances. An electrical appliance can be adjusted to the normal operation without power cutoff under the conditions of the null line breaking, the wrong delivering, the electrical leakage, etc.; the accident that a household electric appliance is burnt for that the break of the zero line happens frequently now, and the phenomenon that the human body is hurt by the electrical leakage of the electrical appliance occurs sometimes. The safety automatic controller for electric appliances has the null line breaking protective system and the electrical leakage double protective system, and the accidents can be efficiently prevented. The utility model is suitable for the safety control of the household single-phase electrical appliances.
Description
The utility model relate to electrical equipment particularly household electrical appliance safety disconnected zero, electric leakage control automatically.
In three-phase four-wire power supply, if load is asymmetric, because zero line is arranged, then the phase voltage of load remains symmetry.But when no zero line because load is asymmetric, will because of each mutually in the big voltage of load raise and burn out electrical appliance, load is little then to be lower than rated voltage and to make the electrical equipment cisco unity malfunction.Also may misdeliver 220 volts is 380 volts.The accident that burns out more than 1000 household electrical appliance is taken off in residential block, Beijing because of zero line is disconnected.Simultaneously, along with household electrical appliance such as washing machine, refrigerator, electric cooking appliance, electric iron etc. enter family, electrical leakage happens occasionally to the phenomenon that human body works the mischief.Solve the disconnected way of taking off, misdelivering of zero line now, be mainly firm connection zero line, simultaneously, on zero line, do not allow measures such as installation insurance silk and disconnecting link switch to prevent, do not see just in case the disconnected report that adopts safety governor that takes off of zero line.The solution of electrical appliance body leakage is to cut off the electricity supply through human body by zero-sequence current, promptly is added with electric leakage protector, or with the metal shell connecting to neutral line of electric equipment, but adopt the former will just can cut off the electricity supply through the electric current of 25mA by human body.Simultaneously, household electrical appliance do not allow to make shell connecting to neutral line, can only earth connection.
The purpose of this utility model is exactly to solve just in case electrical network causes that disconnected zero, misdelivery, electric leakage damage electrical appliance, short circuit and cause that fire, human body are endangered and design a kind of electrical appliance safety automatic controller that does not have a power failure and be adjusted into normal working voltage before registering one's residence.
The realization of this purpose is (seeing figure one): when breaking zero or misdelivering, by the load generation voltage to earth of other phase, ground is arrived in relay J action, 2 changing-overs of electrical appliance jack, still is 220 volts over the ground.Buzzer and light-emitting diode provide AIS.Fault automatically replies again after getting rid of; The moment of electrical appliance electric leakage, shell has a voltage over the ground, the JZ action.Make live wire ground connection and connecting to neutral, duplicate protection.The relay normally open point JZ-4 closure line of starting to exchange fire, the JZ self-locking, buzzer and light-emitting diode send AIS simultaneously.
Be described further below in conjunction with a pair of the utility model of figure.
Under the state that has a power failure electrical appliance is worked on, simultaneously, provide fault-signal, automatically reply original state after the eliminating; Can use appliances power source to turn off during electric leakage, two terminals become ground connection and connecting to neutral, are active in one's movements, and reach two and protect.During use,, can play safety, the effect of control automatically as long as with the firm ground connection of earth terminal.Cost of the present utility model is low, volume is little, easy for installation, be applicable to family, also can be used for the security control of single-phase electrical appliance.
Description of drawings.
Figure one
D1, D2--light-emitting diode,
FM1, FM2--buzzer,
The J--relay,
The JZ--leakage relay,
1,2--connects the terminal of electrical appliance,
3--connects the electrical appliance shell,
R1, R2--resistance.
Figure two
The SCR--bi-directional thyristor switch,
The JZ1--relay,
The JZ2--leakage relay, other and figure are together.
Claims (3)
1, electrical appliance safety automatic controller has the warning indicating device, it is characterized in that controller is made up of disconnected zero protection system and the two insurance systems of electric leakage.
2, controller according to claim 1, it is characterized in that disconnected zero protection system be relay J one end with normally closed contact J-1, normal opened contact J-2 parallel connection after link to each other the other end of J and earth connection after J-2 is in parallel with zero line.
3, according to claim 1,2 described controllers, the two insurance systems of electric leakage that it is characterized in that controller by leakage relay JZ coil with distinguish earth connection and live wire after normally closed contact JZ-3, normal opened contact JZ-4 are in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200656 CN2031971U (en) | 1988-01-22 | 1988-01-22 | Safety automatic controller for electricity-consuming appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200656 CN2031971U (en) | 1988-01-22 | 1988-01-22 | Safety automatic controller for electricity-consuming appliances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2031971U true CN2031971U (en) | 1989-02-01 |
Family
ID=4836040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88200656 Expired - Lifetime CN2031971U (en) | 1988-01-22 | 1988-01-22 | Safety automatic controller for electricity-consuming appliances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2031971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426318A (en) * | 2011-09-16 | 2012-04-25 | 宁夏电力公司石嘴山供电局 | Phase-wire grounding warner |
| CN104124580A (en) * | 2013-05-16 | 2014-10-29 | 介国安 | Off zero protection and grounding universal self-inspection single-phase tripolar power supply socket |
-
1988
- 1988-01-22 CN CN 88200656 patent/CN2031971U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426318A (en) * | 2011-09-16 | 2012-04-25 | 宁夏电力公司石嘴山供电局 | Phase-wire grounding warner |
| CN104124580A (en) * | 2013-05-16 | 2014-10-29 | 介国安 | Off zero protection and grounding universal self-inspection single-phase tripolar power supply socket |
| CN104124580B (en) * | 2013-05-16 | 2016-05-18 | 介国安 | Single-phase three utmost point power distributors of protection off zero and the self-inspection of ground connection general-purpose |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |