CN2591520Y - Electric water heater with omnibearing electricity leakage protection function - Google Patents
Electric water heater with omnibearing electricity leakage protection function Download PDFInfo
- Publication number
- CN2591520Y CN2591520Y CN 02292944 CN02292944U CN2591520Y CN 2591520 Y CN2591520 Y CN 2591520Y CN 02292944 CN02292944 CN 02292944 CN 02292944 U CN02292944 U CN 02292944U CN 2591520 Y CN2591520 Y CN 2591520Y
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- zero sequence
- sequence current
- tripping relay
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- live wire
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Abstract
The utility model relates to an electric water heater with an electric leakage and circuit breaking protection function. An electric leakage and circuit breaking protector of an electric water heater still comprises a zero sequence current transformer, 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 an incoming wire 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 provides full electric leakage and circuit breaking protection, aiming at ubiquitous electric leakage and self electric leakage of electric appliances caused by incorrect connection of lines by people.
Description
Technical field: the utility model relates to a kind of electric heater with comprehensive creepage protection function.
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; RCCB has also been installed additional for water heater in a lot of water heater producers; but purpose in the world all various RCCBs 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 earth leakage protective electric heater at above ubiquitous people with regard to providing.
To achieve these goals; the utility model is taked following technical solution: the electric heater with comprehensive creepage protection function still comprises inner bag; electrothermal tube; shell; water inlet pipe; outlet pipe and earth leakage protective device; earth leakage protective device 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 ZCT 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, does not at this moment power to water heater, outer cover of water heater and earthing pole 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 the control integrated circuit, the control relay contact disconnects, cut off power supply and dangerous earthing pole, 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 the 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.
The specific embodiment one: as shown in Figure 3, the electric heater structure in the present embodiment and the structure similar of traditional electrical water heater have 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, check valve 10 equally; As shown in Figure 1, zero sequence current signal amplifying circuit in the special-purpose RCCB protector of electric heater 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., zero sequence current mutual inductor 7 is set on the outlet pipe 4 of electric heater, the holding wire of zero sequence current mutual inductor 7 preferably adopts shielding line to prevent interference, tripping relay 6 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 interchange side of the bridge rectifier that D8 forms, the input line that exchanges side is connected across on the live wire and zero line in the outside, tripping relay contact, the DC side serial connection one-way SCR 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; For preventing that further external voltage from introducing through feed pipe, with water inlet pipe that feed pipe is connected in also be provided with insulation isolating joint 8, extraneous feed pipe and electric heater shell 1 and inner bag 2 are insulated.
The specific 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.
Claims (5)
1; a kind of electric heater with comprehensive creepage protection function; comprise inner bag; electrothermal tube; shell; water inlet pipe; outlet pipe and earth leakage protective device; earth leakage protective device 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 (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 ZCT 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; electric heater with comprehensive creepage protection function 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 electric heater with comprehensive creepage protection function 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 2 or 3 described electric heaters with comprehensive creepage protection function, it is characterized in that: special IC M45123 that described zero sequence current signal amplifying circuit adopts or VG54123 or CS4145 are that core and respective peripheral element are formed.
5, according to claim 1 or 2 or 3 described electric heaters, it is characterized in that with comprehensive creepage protection function: be provided with insulation isolating joint (8) in the water inlet pipe that feed pipe is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02292944 CN2591520Y (en) | 2002-12-20 | 2002-12-20 | Electric water heater with omnibearing electricity leakage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02292944 CN2591520Y (en) | 2002-12-20 | 2002-12-20 | Electric water heater with omnibearing electricity leakage protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2591520Y true CN2591520Y (en) | 2003-12-10 |
Family
ID=33751082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02292944 Expired - Fee Related CN2591520Y (en) | 2002-12-20 | 2002-12-20 | Electric water heater with omnibearing electricity leakage protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2591520Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294745B (en) * | 2008-06-11 | 2010-06-23 | 宁波方太厨具有限公司 | Electric water heater with three-dimensional electricity guard wall function |
| CN101650070B (en) * | 2009-08-28 | 2012-05-30 | 宁波方太厨具有限公司 | Electric water heater with ground wire electrification detection function |
| CN102954593A (en) * | 2012-11-06 | 2013-03-06 | 中山华帝燃具股份有限公司 | Electric leakage induction and protection control system on electric water heater |
| CN103574907A (en) * | 2012-07-30 | 2014-02-12 | 宁波奥克斯空调有限公司 | Electric heating function control device for heat-pump water heater and control method of electric heating function control device |
| CN103727678A (en) * | 2014-01-02 | 2014-04-16 | 福州斯狄渢电热水器有限公司 | Method for controlling instant heating system of electric water heater |
| CN104201648A (en) * | 2014-09-15 | 2014-12-10 | 福建通用同溢电气有限公司 | New distribution connection method and device |
| CN105371475A (en) * | 2015-12-23 | 2016-03-02 | 芜湖美的厨卫电器制造有限公司 | Water heater |
| CN106058803A (en) * | 2016-07-14 | 2016-10-26 | 广东海信家电有限公司 | Live-line protection control device for electric water heater and housing of 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 |
| CN108011256A (en) * | 2016-12-20 | 2018-05-08 | 芜湖美的厨卫电器制造有限公司 | Leakage protecting plug and electric heater |
| CN111397218A (en) * | 2020-04-15 | 2020-07-10 | 天津苗花生活用品有限公司 | External automatic power-off equipment of water heater |
-
2002
- 2002-12-20 CN CN 02292944 patent/CN2591520Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294745B (en) * | 2008-06-11 | 2010-06-23 | 宁波方太厨具有限公司 | Electric water heater with three-dimensional electricity guard wall function |
| CN101650070B (en) * | 2009-08-28 | 2012-05-30 | 宁波方太厨具有限公司 | Electric water heater with ground wire electrification detection function |
| CN103574907B (en) * | 2012-07-30 | 2016-03-23 | 宁波奥克斯空调有限公司 | For control device and the control method thereof of the electric heating function of Teat pump boiler |
| CN103574907A (en) * | 2012-07-30 | 2014-02-12 | 宁波奥克斯空调有限公司 | Electric heating function control device for heat-pump water heater and control method of electric heating function control device |
| CN102954593B (en) * | 2012-11-06 | 2015-03-11 | 华帝股份有限公司 | Electric leakage induction and protection control system on electric water heater |
| CN102954593A (en) * | 2012-11-06 | 2013-03-06 | 中山华帝燃具股份有限公司 | Electric leakage induction and protection control system on electric water heater |
| CN103727678A (en) * | 2014-01-02 | 2014-04-16 | 福州斯狄渢电热水器有限公司 | Method for controlling instant heating system of electric water heater |
| CN104201648A (en) * | 2014-09-15 | 2014-12-10 | 福建通用同溢电气有限公司 | New distribution connection method and device |
| CN105371475A (en) * | 2015-12-23 | 2016-03-02 | 芜湖美的厨卫电器制造有限公司 | Water heater |
| CN106058803A (en) * | 2016-07-14 | 2016-10-26 | 广东海信家电有限公司 | Live-line protection control device for electric water heater and housing of 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 |
| CN108011256A (en) * | 2016-12-20 | 2018-05-08 | 芜湖美的厨卫电器制造有限公司 | Leakage protecting plug and electric heater |
| CN108011256B (en) * | 2016-12-20 | 2023-10-27 | 芜湖美的厨卫电器制造有限公司 | Leakage protection plug and electric water heater |
| CN111397218A (en) * | 2020-04-15 | 2020-07-10 | 天津苗花生活用品有限公司 | External automatic power-off equipment of water heater |
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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 |