CN204254900U - A kind of shock preventing protector of electric of electric heater - Google Patents
A kind of shock preventing protector of electric of electric heater Download PDFInfo
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- CN204254900U CN204254900U CN201420665867.4U CN201420665867U CN204254900U CN 204254900 U CN204254900 U CN 204254900U CN 201420665867 U CN201420665867 U CN 201420665867U CN 204254900 U CN204254900 U CN 204254900U
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Abstract
A shock preventing protector of electric for electric heater, comprises single-chip microcomputer, indicator lamp and resistance, connects the earth after indicator lamp and resistant series; It is characterized in that: also comprise a photo resistance and signal processing circuit, described indicator lamp has two, and one is electric leakage indicator lamp, another signal lamp; Photo resistance is connected with signal processing circuit, signal processing circuit is connected with single-chip microcomputer; Signal lamp coordinates with photo resistance.Owing to adopting such structure, when electric leakage in ground wire, electric leakage indicator lamp is bright; Signal lamp luminescence also irradiates photo resistance, and signal processing circuit processes signal, and passes to single-chip microcomputer, single-chip microcomputer block system relay, electric heater power-off, thus plays a protective role.
Description
Technical field
The utility model relates to
a kind of shock preventing protector of electric of electric heater.
Background technology
Currently available technology, in recent years, electric heater develop rapidly, but occur when the accident that user is electrically shocked simultaneously is also.Obviously; the anticreeper anti-electricity wall that current electric heater uses, leakage protecting plug (hereinafter referred to as " anti-electric brake ") can not be fully effective carry out security protection; because under the prerequisite that Chinese power utilization environment is severe, anti-electricity wall and anti-electric brake show significant limitation.
China's power utilization environment goes wrong and mainly contains two:
1. user's family ground wire is directly charged or do not have earth connection;
2. user's family water pipe and water route charged, other electrical equipment bands of bathroom be electrically connected to electric heater formed " exterior power supply ".
Above two kinds of power utilization environments, anti-electricity wall and anti-electric brake effectively cannot carry out security protection, and reason is as follows:
(1) anti-electricity wall belongs to passive type in security protection, when dangerous power supply exists, and the characteristic example protection that it can only rely on water resistance rate large; namely when in water pipe, water contains more metal ion; water resistance reduces, and current become conductor, and anti-electricity wall just loses function of safety protection.
(2) anti-electricity wall cannot be protected exterior power supply, when extraneous electricity directly lead to gondola water faucet out time, leakage warning lantern festival is bright, but anti-electricity wall dividing potential drop can not carry out electrocution-proof protection again, and at this moment user is with regard to danger close!
(3) one of anti-electricity wall large drawback: the protection of passive type.A leakage warning circuit all can be joined while anti-electricity wall joined by current electric heater, circuit on one side picks body, one termination wall, a middle series winding resistance and a neon indicator (being often called as ground wire electrification warning lamp) form loop, neon indicator is generally arranged on fuselage face-piece and is nominally ground wire electrification warning lamp, when leaking electricity, neon tube reminds client as bright being used for of electric leakage indicator lamp, but can not initiatively go to cut off the electricity supply, in fact, at this moment human body still has electric current, so still there is potential safety hazard, once as above-mentioned (1) current change conductor, just there is life danger!
(4) anti-electric brake is active in security protection, when dangerous power supply exists, cuts off general supply immediately, and this is the advantage of anti-electric brake.But anti-electric brake structure relative complex, sensitive, internal wiring easily breaks down, and fog impact etc. can cause electric leakage to be failure to actuate, or occurs misoperation.
(5) anti-electric brake over the ground tape electricity or do not have earth connection not have safeguard protection effect.
The dangerous power supply that anti-electric brake externally comes is at one's wit's end, does not have safeguard protection effect.Such as: water pipe or water route charged time, leakage current without anti-electric brake, thus does not have safeguard protection effect.
Utility model content
The purpose of this utility model is: provide a kind of
the shock preventing protector of electric of electric heater, it can to water pipe or water route charged time, safeguard protection is provided, eliminates safe hidden trouble.
The utility model is achieved in that one
the shock preventing protector of electric of electric heater, comprise single-chip microcomputer, indicator lamp and resistance, after indicator lamp and resistant series, connect the earth; Its special character is: also comprise a photo resistance and signal processing circuit,
Described indicator lamp has two, and one is electric leakage indicator lamp, another signal lamp;
Photo resistance is connected with signal processing circuit, signal processing circuit is connected with single-chip microcomputer;
Signal lamp coordinates with photo resistance.
Described one
the shock preventing protector of electric of electric heater, its special character is: described electric leakage indicator lamp and signal lamp are neon tube.
The utility model is a kind of
the shock preventing protector of electric of electric heater, owing to adopting such structure, when electric leakage in ground wire, electric leakage indicator lamp is bright; Signal lamp luminescence also irradiates photo resistance, and signal processing circuit processes signal, and passes to single-chip microcomputer, single-chip microcomputer block system relay, electric heater power-off, thus plays a protective role.
Accompanying drawing explanation
Fig. 1 is the block diagram of electric principle of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of
the shock preventing protector of electric of electric heater, comprise single-chip microcomputer, indicator lamp and resistance R1, after indicator lamp and resistance R1 connect, connect the earth; Also comprise photo resistance R2 and a signal processing circuit,
Described indicator lamp has two, and one is electric leakage indicator lamp, another signal lamp;
Photo resistance R2 is connected with signal processing circuit, signal processing circuit is connected with single-chip microcomputer;
Signal lamp coordinates with photo resistance R2.
Described electric leakage indicator lamp and signal lamp are neon tube.
Above-described is only preferred embodiments of the present utility model.It should be pointed out that for the person of ordinary skill of the art, when not departing from the utility model principle, can also make some improvement and modification, this is also considered as protection domain of the present utility model.
Claims (2)
1. one kind
the shock preventing protector of electric of electric heater, comprise single-chip microcomputer, indicator lamp and resistance, after indicator lamp and resistant series, connect the earth; It is characterized in that: also comprise a photo resistance and signal processing circuit,
Described indicator lamp has two, and one is electric leakage indicator lamp, another signal lamp;
Photo resistance is connected with signal processing circuit, signal processing circuit is connected with single-chip microcomputer;
Signal lamp coordinates with photo resistance.
2. one according to claim 1
the shock preventing protector of electric of electric heater, it is characterized in that: described electric leakage indicator lamp and signal lamp are neon tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665867.4U CN204254900U (en) | 2014-11-10 | 2014-11-10 | A kind of shock preventing protector of electric of electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665867.4U CN204254900U (en) | 2014-11-10 | 2014-11-10 | A kind of shock preventing protector of electric of electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204254900U true CN204254900U (en) | 2015-04-08 |
Family
ID=52959200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420665867.4U Active CN204254900U (en) | 2014-11-10 | 2014-11-10 | A kind of shock preventing protector of electric of electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204254900U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870764A (en) * | 2018-08-30 | 2018-11-23 | 芜湖美的厨卫电器制造有限公司 | A kind of power-off protection apparatus and electric heater of electric heater |
| CN109113997A (en) * | 2018-08-29 | 2019-01-01 | 珠海凌达压缩机有限公司 | Compressor and mounted air conditioner system |
| CN109595821A (en) * | 2017-09-30 | 2019-04-09 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its security protection system |
| CN111486599A (en) * | 2020-03-20 | 2020-08-04 | 广东万家乐燃气具有限公司 | Electric water heater electric leakage detection system and electric water heater |
-
2014
- 2014-11-10 CN CN201420665867.4U patent/CN204254900U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595821A (en) * | 2017-09-30 | 2019-04-09 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its security protection system |
| CN109113997A (en) * | 2018-08-29 | 2019-01-01 | 珠海凌达压缩机有限公司 | Compressor and mounted air conditioner system |
| CN108870764A (en) * | 2018-08-30 | 2018-11-23 | 芜湖美的厨卫电器制造有限公司 | A kind of power-off protection apparatus and electric heater of electric heater |
| CN111486599A (en) * | 2020-03-20 | 2020-08-04 | 广东万家乐燃气具有限公司 | Electric water heater electric leakage detection system and electric water heater |
| CN111486599B (en) * | 2020-03-20 | 2021-05-14 | 广东万家乐燃气具有限公司 | Electric water heater electric leakage detection system and electric water heater |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |