CN202915575U - Electric leakage induction and protection control device on electric water heater - Google Patents
Electric leakage induction and protection control device on electric water heater Download PDFInfo
- Publication number
- CN202915575U CN202915575U CN 201220580989 CN201220580989U CN202915575U CN 202915575 U CN202915575 U CN 202915575U CN 201220580989 CN201220580989 CN 201220580989 CN 201220580989 U CN201220580989 U CN 201220580989U CN 202915575 U CN202915575 U CN 202915575U
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- Prior art keywords
- water
- control
- electric
- electric heater
- leakage current
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- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 144
- 230000006698 induction Effects 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 6
- 239000008236 heating water Substances 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract 1
- 206010014357 Electric shock Diseases 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 206010014405 Electrocution Diseases 0.000 description 3
- 238000003287 bathing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 230000001077 hypotensive effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Control Of Resistance Heating (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses an electric leakage induction and protection control device on electric water heater, including control module, be equipped with electric heater unit on the water tank that is equipped with water, be equipped with switch between electric heater unit and the power, the water tank goes out the water end and is connected with the electrically insulated water pipe, still be equipped with straight-through current transformer detection module and play water control valve on the electrically insulated water pipe. The utility model aims at utilizing punching current transformer detection module to detect the leakage current size, and judge at control module that the leakage current surpasss the default and when will causing harm to the user, control switch's disconnection, and behind disconnection switch, when still detecting that the leakage current still surpasss the default, control water control valve cuts out water, thereby cut off the leakage current and contact the user through rivers, and because be provided with the electrically insulated water pipe between water tank and outlet end, also can not make the leakage current pass through equipment and contact the user, thereby guarantee user's safety.
Description
[technical field]
The leakage inductance that the utility model relates on a kind of electric heater should reach the protection control device, belongs to electricity field.
[background technology]
At present, the electrocution-proof protection control device of bathing in the electric heater, general power supply detection of electrical leakage and the power-down control device of adopting, be called for short the A scheme, with water body resistance and spacer assembly, be called for short the B scheme, in the A scheme, utilize under the normal condition electric power loop electric current and equal zero, its principle is based on Kirchhoff's current law (KCL), occurs the 3rd current branch during leak current fault, causes former electric power loop electric current and non-vanishing, system detects this electric current difference and judges that accordingly there is electric leakage in electrical appliance, when leakage current cuts off the electricity supply to prevent personnel's Danger Electric shock risk by control circuit during greater than setting value; In the B scheme, utilize water body resistance hypotensive effect, at water tank that may be charged to grounded screen and similar device are set between the user, when power supply is transmitted to the user by current, because the water body electric resistance partial pressure is larger, user's dividing potential drop belongs to the safe voltage scope less than 36V, prevents Danger Electric shock risk with this.
Above-described prior art has following shortcoming:
1, in the A scheme, when zero-power line broke, if when power firestreak leaks electricity by consuming device, earth-leakage protection controller was in the state of quitting work but the holding contact on-state, and creepage protection function lost efficacy.
2, in the A scheme, when earthing pole tape electricity, when power firestreak or neutral line break, earth-leakage protection controller is in the state of quitting work, and creepage protection function lost efficacy.
3, in the B scheme, when ground wire electrification, creepage protection function may lose efficacy.
4, in the B scheme, because various places water quality is different, the use of water yield decline fault effects appears in anti-electric shock apparatus in the hard water zone because incrustation scale stops up.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology; provide the leakage inductance on a kind of electric heater should reach the protection control device; it utilizes the straight-through current transformer detection module to detect the leakage current of water in the water pipe between the user in water tank or the water tank; and when control module judges that leakage current will work the mischief to the user above preset value; the disconnection of control power switch; and behind disconnecting power switch; when also detecting leakage current still above preset value; the control outlet water control valve blocks water outlet; thereby cut off leakage current and touch the user by current; and because between water tank and water side, be provided with the electric insulation water pipe; can not make leakage current touch the user by equipment yet, thereby guarantee user's safety.
For achieving the above object, the utility model has adopted following technical proposal:
Leakage inductance on a kind of electric heater should reach the protection control device; it is characterized in that being provided with electric heater unit 2 for heating water at the water tank 1 that water is housed; be provided with power switch 21 between described electric heater unit 2 and the power supply; described water tank 1 water side is connected with electric insulation water pipe 3; pipe shaft between described electric insulation water pipe 3 water inlet ends and the water side is arranged with outward for the straight-through current transformer detection module 4 that the liquid that flows through is carried out leakage current test; when described current transformer detection module 4 outputs are connected with and will work the mischief to the user for judging leakage current whether to surpass preset value; the control module 5 that control power switch 21 disconnects also is connected with on the described control module 5 and still detects the outlet water control valve 31 that blocks 3 water outlets of electric insulation water pipe when leakage current surpasses preset value behind disconnecting power switch 21.
Described current transformer detection module 4 includes and is set in the outer transformer annular core of electric insulation water pipe 3 pipe shafts 41 and the mutual inductor coil 42 that is wrapped on the transformer annular core 41, is connected with control module 5 detection signal inputs behind the described mutual inductor coil 42 two ends shunt load resistance 43.
Described outlet water control valve 31 is arranged on electric insulation water pipe 3 water inlet ends.
Described outlet water control valve 31 is arranged between electric insulation water pipe 3 water inlet ends and the water side.
Described water tank 1 water inlet end is provided with the water inlet control valve 11 for control running water break-make, and described water inlet control valve 11 control signal inputs are connected with control module 5.
The beneficial effects of the utility model are:
1, detects leakage current in the water outlet water pipe by the current transformer detection module, and judge whether to surpass preset value and the break-make of control power switch will work the mischief to the user time by control module.
2, behind disconnecting power switch, in the time can also detecting leakage current or voltage still above preset value, control module is blocked current by outlet water control valve, further guarantees user's safety.Outlet water control valve is because of the dead electricity autoshutdown when system power supply has a power failure or be unusual, the electrocution-proof protection function blind area of avoiding control circuit to occur because of power failure.
3, carry out duplicate protection control by control module, meaning is that system can minute situation process, first stopped heating power supply and do not close water valve, and effect is to guarantee not affect in the safe situation user's use as far as possible.
The detection of electrical leakage of 4, by the current transformer detection module liquid that flows through in the electric insulation water pipe being carried out the electricity isolation, control foundation to current detecting final between the user as protection against electric shock with water heater, avoid the Danger Electric shock risk that uncertain external factor produces the user in the system architecture.
5, by electric insulation water pipe and outlet water control valve are set between water tank and water side, when closing outlet water control valve, can cut off leakage current fully and touch the user by equipment itself or current, thus assurance user's safety.
6, avoid to greatest extent the impact of physics or chemical factor to the damage of checkout gear by this apparatus structure, guarantee the reliability of systemic-function.
[description of drawings]
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model schematic diagram in kind.
Fig. 3 is current transformer detection module of the present utility model.
[specific embodiment]
Be described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model:
As shown in Figure 1; leakage inductance on a kind of electric heater should reach the protection control device; it is characterized in that being provided with electric heater unit 2 for heating water at the water tank 1 that water is housed; be provided with power switch 21 between described electric heater unit 2 and the power supply; described water tank 1 water side is connected with electric insulation water pipe 3; pipe shaft between described electric insulation water pipe 3 water inlet ends and the water side is arranged with outward for the straight-through current transformer detection module 4 that the liquid that flows through is carried out leakage current test; when described current transformer detection module 4 outputs are connected with and will work the mischief to the user for judging leakage current whether to surpass preset value; the control module 5 that control power switch 21 disconnects also is connected with on the described control module 5 and still detects the outlet water control valve 31 that blocks 3 water outlets of electric insulation water pipe when leakage current surpasses preset value behind disconnecting power switch 21.
Straight-through current transformer detection module 4 described in the utility model includes and is set in the outer transformer annular core of electric insulation water pipe 3 pipe shafts 41 and the mutual inductor coil 42 that is wrapped on the transformer annular core 41, and described mutual inductor coil 42 output end currents are connected with control module 5 inputs after forming the output voltage corresponding with the leakage current that detects by load resistance 43.
As shown in Figure 2, described outlet water control valve 31 is arranged on electric insulation water pipe 3 middle and upper parts.
As mentioned above, outlet water control valve 31 described in the utility model also can be arranged between electric insulation water pipe 3 water inlet ends and the water side or be set directly at electric insulation water pipe 3 water inlet ends, and it can both play the identical water outlet of blocking in the present invention.
The utility model can also be provided for controlling at described water tank 1 water inlet end the water inlet control valve 11 of running water break-make, and described water inlet control valve 11 input control ends are connected with control module 5, control so that at water tank 1 water inlet end running water is entered water tank 1.May control at water inlet control valve 11 on the equipment of water outlet current break-make, water inlet control valve 11 has to be equal to outlet water control valve 31 and blocks current with the electrocution-proof protection function.
As mentioned above, inject running water by water inlet control valve 11 to water tank 1, heat by 2 pairs of water of electric heater unit, carry out the control of electric heater unit 2 by power switch 21, the hot water after heating by outlet water control valve 31 outputs is for user's bathing.
As shown in Figures 2 and 3, when electric heater unit 2 or other reasons cause water tank 1 charged or liquid is charged, leakage current flows to the user by water outlet water and consists of together current path to ground again, the magnetic flux that changes at transformer annular core 41 simultaneously, mutual inductor coil 42 produces electromotive force, output current is inputted detection and comparison by control module 5 after forming the output voltage relevant with measuring current by load resistance 43, in the time of will working the mischief to the user when judging leakage current to surpass preset value, the power switch 21 that control is closed on the electric heater unit 2 cuts off the electric heater power supply.
As mentioned above; by electric insulation water pipe 3 and outlet water control valve 31 are set between water tank 1 and water side; as mentioned above; behind powered-down switch 21; when control module 5 still detects leakage current above preset value; control module 5 is closed outlet water control valve 31; the result of current cutout is that electric current causes the path of the injury of getting an electric shock to be cut off to the user in the electric insulation water pipe 3; cut off leakage current so fully and touch the user by equipment itself or water; thereby guarantee user's safety, realized the earth leakage protective purpose of the utility model.
As mentioned above; the utility model protection be that leakage inductance on a kind of electric heater should reach and protects control device; detect leakage current by straight-through current transformer detection module 4; and judge that leakage currents surpass preset value and the disconnection of control power switch 21 will work the mischief to the user time in control module 5; and behind disconnecting power switch 21; in the time can also detecting leakage current still above preset value; control outlet water control valve 31 blocks water outlet; thereby cut off leakage current and touch the user by current; and because between water tank 1 and water side, be provided with electric insulation water pipe 3; can not make leakage current touch the user by equipment yet; thereby guarantee user's safety, all are identical with this case structure or prevent from getting an electric shock by this case technology enlightenment being used for of making and all should fall in the protection domain of this case for the water heater product of purpose or with the method and apparatus to the liquid current detection that this case provides.
Claims (5)
1. the leakage inductance on the electric heater should reach the protection control device; it is characterized in that being provided with electric heater unit (2) for heating water in that the water tank of water (1) is housed; be provided with power switch (21) between described electric heater unit (2) and the power supply; described water tank (1) water side is connected with electric insulation water pipe (3); pipe shaft between described electric insulation water pipe (3) water inlet end and the water side is arranged with outward for the straight-through current transformer detection module (4) that the liquid that flows through is carried out leakage current test; when described current transformer detection module (4) output is connected with and will works the mischief to the user for judging leakage current whether to surpass preset value; the control module (5) that control power switch (21) disconnects also is connected with on the described control module (5) and still detects the outlet water control valve (31) that blocks electric insulation water pipe (3) water outlet when leakage current surpasses preset value behind disconnecting power switch (21).
2. the leakage inductance on a kind of electric heater according to claim 1 should reach the protection control device; it is characterized in that described current transformer detection module (4) includes is set in the outer transformer annular core (41) of electric insulation water pipe (3) pipe shaft and is wrapped in mutual inductor coil (42) on the transformer annular core (41), and described mutual inductor coil (42) two ends shunt load resistance (43) are connected with control module (5) detection signal input afterwards.
3. the leakage inductance on a kind of electric heater according to claim 1 should reach the protection control device, it is characterized in that described outlet water control valve (31) is arranged on electric insulation water pipe (3) water inlet end.
4. the leakage inductance on a kind of electric heater according to claim 1 should reach the protection control device, it is characterized in that described outlet water control valve (31) is arranged between electric insulation water pipe (3) water inlet end and the water side.
5. the leakage inductance on a kind of electric heater according to claim 1 should reach the protection control device; it is characterized in that described water tank (1) water inlet end is provided with the water inlet control valve (11) for control running water break-make, described water inlet control valve (11) control signal input is connected with control module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220580989 CN202915575U (en) | 2012-11-06 | 2012-11-06 | Electric leakage induction and protection control device on electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220580989 CN202915575U (en) | 2012-11-06 | 2012-11-06 | Electric leakage induction and protection control device on electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202915575U true CN202915575U (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220580989 Expired - Lifetime CN202915575U (en) | 2012-11-06 | 2012-11-06 | Electric leakage induction and protection control device on electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202915575U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| WO2017107354A1 (en) * | 2015-12-23 | 2017-06-29 | 芜湖美的厨卫电器制造有限公司 | Water heater |
| CN113236406A (en) * | 2021-06-30 | 2021-08-10 | 奇瑞汽车股份有限公司 | Heating device of exhaust system, exhaust system and automobile |
| CN113466737A (en) * | 2020-03-31 | 2021-10-01 | 比亚迪股份有限公司 | Electric leakage sensor, electric leakage detection method, electric leakage detection system, storage medium and vehicle |
| CN113663267A (en) * | 2020-05-15 | 2021-11-19 | 本德尔有限两合公司 | Fire extinguishing agent discharging device |
-
2012
- 2012-11-06 CN CN 201220580989 patent/CN202915575U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| WO2017107354A1 (en) * | 2015-12-23 | 2017-06-29 | 芜湖美的厨卫电器制造有限公司 | Water heater |
| CN113466737A (en) * | 2020-03-31 | 2021-10-01 | 比亚迪股份有限公司 | Electric leakage sensor, electric leakage detection method, electric leakage detection system, storage medium and vehicle |
| CN113663267A (en) * | 2020-05-15 | 2021-11-19 | 本德尔有限两合公司 | Fire extinguishing agent discharging device |
| US11654315B2 (en) | 2020-05-15 | 2023-05-23 | Bender Gmbh & Co. Kg | Device for discharging extinguishing agent |
| CN113236406A (en) * | 2021-06-30 | 2021-08-10 | 奇瑞汽车股份有限公司 | Heating device of exhaust system, exhaust system and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: VATTI CO., LTD. Free format text: FORMER NAME: ZHONGSHAN CITY HUADI COMBUSTION UTENSILS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 528400 Guangdong Province, Zhongshan City Xiaolan Industrial Avenue South Road No. 1 Patentee after: Vatti Co., Ltd. Address before: 528400 Guangdong Province, Zhongshan City Xiaolan Industrial Avenue South Road No. 1 Patentee before: Zhongshan City Huadi Combustion Utensils Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130501 Effective date of abandoning: 20150311 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130501 Effective date of abandoning: 20150311 |
|
| RGAV | Abandon patent right to avoid regrant |