CN2591826Y - Special earth leakage breaking protector for electric water heater - Google Patents
Special earth leakage breaking protector for electric water heater Download PDFInfo
- Publication number
- CN2591826Y CN2591826Y CN 02292943 CN02292943U CN2591826Y CN 2591826 Y CN2591826 Y CN 2591826Y CN 02292943 CN02292943 CN 02292943 CN 02292943 U CN02292943 U CN 02292943U CN 2591826 Y CN2591826 Y CN 2591826Y
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- China
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- tripping relay
- zero sequence
- sequence current
- zero
- live wire
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Abstract
The utility model relates to a special electrical leakage circuit breaking protector for an electric water heater, which comprises zero sequence current transformers, a zero sequence current signal amplifying circuit, and a tripping relay. The utility model is characterized in that the tripping relay is a three-pole linking relay, and the contacts of three poles are respectively connected in series with an earthing wire of an electric water heater, and the incoming wires of the zero line and the live wire of a power source; at least one zero sequence current transformer is sheathed on a water inlet pipe or a water outlet pipe of the electric water heater; the zero line and the live wire simultaneously penetrate through the zero sequence current transformer; the working power sources of the tripping relay and the zero sequence signal amplifying circuit are connected to the zero line and the live wire on the outer side of the contact of the tripping relay. The utility model can provide full electrical leakage circuit broking protection, aiming at ubiquitous electrical leakage phenomena caused by incorrect connection for lines by people and self electrical leakage of electric appliances.
Description
Technical field: the utility model relates to the special-purpose residual current circuit breaker protector of a kind of electric heater.
Background technology: electric heater enjoys people's favor in recent years as a kind of household appliances.Electric heater belongs to the I electric appliances, is necessary for the protection ground wire that it is provided with a special use during installation.When having good earth connection and plug to contact with socket in user's three utmost point supply sockets and being under the good situation, it is very safe that electric heater uses.But according to market survey, at present do not have good earth connection on China has many consumers the supply socket of installing, some running water pipe is used as ground wire, and some is in vacant state, some in addition the ground wire utmost point of socket is connected on the zero line or live wire of power supply.Like this, the user just exists the hidden danger that is absolutely unsafe when using electric heater.Particularly the earth polar of supply socket is attempted by on the live wire, and at this moment the shell of electric heater is just directly charged, and the user just has the danger of direct electric shock.Also have the ground wire utmost point of supply socket and also be absolutely unsafe being connected on the zero line, just in case during the outdoor electricity distribution line maintenance with live wire and zero line exchange, the shell of electric heater is also just directly charged so.If moreover do not press the standard-required wiring during water heater wiring, with ground wire and zero line misconnection, ground wire and live wire misconnection all can cause Danger Electric shock risk.According to investigations, at present the annual electric heater that uses of China occurs repeatedly because of socket ground wire utmost point misconnection or the accident of getting an electric shock and dying that do not have good earth to cause, and in rising trend.In order to prevent that electric heater from the electric leakage situation in use taking place; residual current circuit breaker has also been installed additional for water heater in a lot of water heater producers; but purpose in the world all various residual current circuit breaker all can only to electrical appliance itself leaked electricity the tripping operation protective effect, then can not shield to the caused leaky of power supply wiring mistake.
Summary of the invention: the purpose of this utility model a kind ofly causes that for causing the circuit misconnection electric leakage problem of two aspects such as leaky and electrical equipment self electric leakage all can provide the omnibearing leakage, breaking protector of protection at above ubiquitous people with regard to providing.
To achieve these goals; the utility model is taked following technical solution: the special-purpose leakage, breaking protector of electric heater still comprises zero sequence current mutual inductor; zero sequence current signal amplifying circuit and tripping relay; it is characterized in that: described tripping relay is three utmost point linkage relays; three utmost point contacts are serially connected in the earth connection of electric heater respectively; on the inlet wire of zero-power line and live wire; have at least a zero sequence current mutual inductor to be set on the water inlet pipe or outlet pipe of electric heater; zero line and live wire pass zero-sequence transformer simultaneously, and the working power of tripping relay and zero sequence signal amplifying circuit is connected on the zero line and live wire in the outside, tripping relay contact.
The utility model has following beneficial effect compared with prior art: when live wire and ground phase of line misconnection, do not have working power, control relay is in open-circuit condition, at this moment not to the water heater power supply, outer cover of water heater and earth electrode are disconnected, play the safeguard protection effect; When supply socket does not have effective grounded line and the socket ground wire utmost point and live wire and connects and make outer cover of water heater charged, when constituting power circuit generation electric leakage with human body, current transformer has signal output, handle through control integrated circuit, the control relay contact disconnects, cut off power supply and dangerous earth electrode, play the safeguard protection effect; When power supply self had leaky or electric heater self electric leakage, the source current turnover of passing current transformer was uneven, and current transformer has signal output; handle through control integrated circuit; the control relay contact disconnects, and cuts off power supply, plays the safeguard protection effect.Omnibearing leakage, breaking protection is provided
Below in conjunction with accompanying drawing the utility model is further described, and provides embodiment simultaneously.
Description of drawings:
Accompanying drawing 1 is the utility model embodiment one circuit theory diagrams;
Accompanying drawing 2 is the utility model embodiment two circuit theory diagrams;
Accompanying drawing 3 is used wiring schematic diagram for the utility model.
Embodiment one: as shown in Figure 1; the special-purpose leakage, breaking protector of electric heater; comprise zero sequence current mutual inductor 7; zero sequence signal amplifying circuit and tripping relay; the zero sequence current signal amplifying circuit selects for use special-purpose electric leakage signal to handle integrated VG54123 and peripheral circuit element is formed; this is integrated have highly sensitive; characteristics such as circuit structure is simple; can certainly adopt other similar integrated circuits; as M54123 or CS4145 etc.; the holding wire of zero sequence current mutual inductor 7 preferably adopts shielding conductor to prevent interference; tripping relay should be selected three-stage structure for use; three utmost point contacts should be serially connected in the earth connection G of electric heater respectively; on the inlet wire of zero-power line N and live wire L; the capacity of contact should satisfy the power requirement of electric heater; actuating coil is connected on by diode D5; D6; D7; the AC side of the bridge rectifier that D8 forms; the incoming line of AC side is connected across on the live wire L and zero line N in the outside, tripping relay contact; the DC side serial connection unidirectional controllable silicon S 2 of rectification circuit, the output that special-purpose electric leakage signal is handled integrated IC1 is connected the dropout of controlling tripping relay with the trigger electrode of one-way SCR.
Embodiment two: as shown in Figure 2, can also adopt one two utmost point tripping relay and a normally opened relay to replace three utmost point tripping relays, when adopting this mode, three utmost points interlock contact is made of the tripping relay J2 and a normally opened relay J3 at the two poles of the earth, be connected across on the live wire L and zero line N in the outside, tripping relay contact after sealing in controllable silicon S2 in the working power loop of described tripping relay J2, the contact of normally opened relay J3 is connected on the earth connection G, and the working power loop is connected across on the live wire L and zero line N of inboard, tripping relay contact; The output of zero sequence current signal amplifying circuit links to each other with controllable silicon S2 trigger electrode, triggers controllable silicon S2 conducting when the zero sequence current signal amplifying circuit detects zero sequence current signal, tripping relay is threaded off cut off the power supply.
The application circuit of the special-purpose breaker protector of this electric heater is referring to accompanying drawing 3, wherein electric heater shell 1, inner bag 2, water inlet pipe 3, outlet pipe 4, electrothermal tube 5, leakage, breaking protector 6, zero sequence current mutual inductor 7, water mixing valve door 9, unidirectional valve 10.
Claims (4)
1; the special-purpose leakage, breaking protector of a kind of electric heater; comprise zero sequence current mutual inductor; zero sequence current signal amplifying circuit and tripping relay; it is characterized in that: described tripping relay is three utmost point linkage relays; three utmost point contacts are serially connected in the earth connection (G) of electric heater respectively; on the inlet wire of zero-power line (N) and live wire (L); have at least a zero sequence current mutual inductor to be set on the water inlet pipe or outlet pipe of electric heater; zero line (N) and live wire (L) pass zero-sequence transformer simultaneously, and the working power of tripping relay and zero sequence signal amplifying circuit is connected on the zero line (N) and live wire (L) in the outside, tripping relay contact.
2; the special-purpose residual current circuit breaker protector of electric heater according to claim 1; it is characterized in that: described three utmost points interlock contact is made of a tripping relay (J1) with three utmost point contacts; be connected across on the live wire (L) and zero line (N) in the outside, tripping relay contact after sealing in controllable silicon (S2) in the working power loop of described tripping relay (J1); the output of zero sequence current signal amplifying circuit links to each other with controllable silicon (S2) trigger electrode; trigger controllable silicon (S2) conducting when the zero sequence current signal amplifying circuit detects zero sequence current signal, tripping relay (J1) is threaded off cut off the power supply.
3, the special-purpose residual current circuit breaker protector of electric heater according to claim 1, it is characterized in that: described three utmost points interlock contact is made of the tripping relay (J2) and a normally opened relay (J3) at the two poles of the earth, be connected across on the live wire (L) and zero line (N) in the outside, tripping relay contact after sealing in controllable silicon (S2) in the working power loop of described tripping relay (J2), the contact of normally opened relay (J3) is connected on the earth connection (G), and the working power loop is connected across on the live wire (L) and zero line (N) of inboard, tripping relay contact; The output of zero sequence current signal amplifying circuit links to each other with controllable silicon (S2) trigger electrode, triggers controllable silicon (S2) conducting when the zero sequence current signal amplifying circuit detects zero sequence current signal, tripping relay is threaded off cut off the power supply.
4, according to claim 1 or the special-purpose residual current circuit breaker protector of 2 or 3 described electric heaters, it is characterized in that: application-specific integrated circuit (ASIC) M45123 that described zero sequence current signal amplifying circuit adopts or VG54123 or CS4145 are that core and respective peripheral element are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02292943 CN2591826Y (en) | 2002-12-20 | 2002-12-20 | Special earth leakage breaking protector for electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02292943 CN2591826Y (en) | 2002-12-20 | 2002-12-20 | Special earth leakage breaking protector for electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2591826Y true CN2591826Y (en) | 2003-12-10 |
Family
ID=33751081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02292943 Expired - Fee Related CN2591826Y (en) | 2002-12-20 | 2002-12-20 | Special earth leakage breaking protector for electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2591826Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100432570C (en) * | 2006-09-11 | 2008-11-12 | 刘德鹏 | Full automatic electricity insulation, thermostatic and adjustable electric water heater |
| CN100568655C (en) * | 2006-03-27 | 2009-12-09 | 艾欧史密斯(中国)热水器有限公司 | Flow-limiting safety electric water heater |
| CN106482354A (en) * | 2016-11-28 | 2017-03-08 | 广东万家乐燃气具有限公司 | A kind of electric heater water outlet power-off and earth leakage protective device |
| CN106773994A (en) * | 2017-01-09 | 2017-05-31 | 浙江新涛电子科技股份有限公司 | The circuit and control method of a kind of SECO PE ground wires |
-
2002
- 2002-12-20 CN CN 02292943 patent/CN2591826Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100568655C (en) * | 2006-03-27 | 2009-12-09 | 艾欧史密斯(中国)热水器有限公司 | Flow-limiting safety electric water heater |
| CN100432570C (en) * | 2006-09-11 | 2008-11-12 | 刘德鹏 | Full automatic electricity insulation, thermostatic and adjustable electric water heater |
| CN106482354A (en) * | 2016-11-28 | 2017-03-08 | 广东万家乐燃气具有限公司 | A kind of electric heater water outlet power-off and earth leakage protective device |
| CN106773994A (en) * | 2017-01-09 | 2017-05-31 | 浙江新涛电子科技股份有限公司 | The circuit and control method of a kind of SECO PE ground wires |
| CN106773994B (en) * | 2017-01-09 | 2023-08-04 | 浙江新涛电子科技有限公司 | Circuit for controlling PE ground wire in time sequence and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |