CN111486599A - Electric water heater electric leakage detection system and electric water heater - Google Patents
Electric water heater electric leakage detection system and electric water heater Download PDFInfo
- Publication number
- CN111486599A CN111486599A CN202010201734.1A CN202010201734A CN111486599A CN 111486599 A CN111486599 A CN 111486599A CN 202010201734 A CN202010201734 A CN 202010201734A CN 111486599 A CN111486599 A CN 111486599A
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- China
- Prior art keywords
- electric
- water heater
- electric water
- leakage detection
- photoelectric coupler
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/56—Testing of electric apparatus
Abstract
The invention discloses an electric leakage detection system of an electric water heater, which comprises an electric leakage detection circuit connected between a power supply joint ground wire and a wall; the leakage detection circuit is connected with a main controller of the electric water heater through a photoelectric coupler, the input end of the photoelectric coupler is grounded to a leakage detection loop, and the output end of the photoelectric coupler is connected with the main controller; the main controller detects whether the photoelectric coupler has high level output for more than 3 seconds, if so, the relay for controlling the electric heater is switched off; after the relay is disconnected, the main controller continues to detect whether the photoelectric coupler has high level output for more than 1 second, if yes, the environment ground wire is judged to be electrified, and if not, the electric water heater is judged to have electric leakage. The invention also discloses an electric water heater.
Description
Technical Field
The invention relates to the technical field of electric water heaters, in particular to an electric water heater electric leakage detection system and an electric water heater.
Background
The electric water heater is a water heater which takes electricity as energy source for heating, and in the using process, as the water flowing in the water heater is directly contacted with a human body, once electricity leaks, the electricity can pass through the human body through the transmission of the water flowing in the water heater, so that the life safety of the human body is threatened due to the electricity leakage. Although the electric water heater is provided with insulation protection, when the insulation is damaged due to aging or other reasons, the electric water heater also has the risk of electric leakage.
At present, the electric water heater is protected against electric shock by water resistance (electricity-proof wall), and a ground wire live indicator lamp is used to form a loop with the wall ground, and the indicator lamp is turned on to remind the user of electric leakage of the machine. However, the grounding system of the power grid of China's family generally has the condition of lacking the ground wire or the virtual connection of the ground wire, the electric leakage of the electric water heater can be divided into two types of insulation failure of the electric water heater and reverse electrification of the ground wire, and the technology can not distinguish whether the electric leakage of the electric water heater is caused by the electrification of the environment or the electric leakage of the electric water heater per se, so that bad experience exists.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide an electric leakage detection system of an electric water heater, which can automatically distinguish the insulation failure (self electric leakage) of the water heater from the reverse electrification of a ground wire.
The invention also provides an electric water heater with the electric leakage detection system.
In order to achieve the purpose, the invention adopts the following technical scheme.
An electric leakage detection system of an electric water heater comprises an electric leakage detection circuit connected between a power supply connector ground wire and a wall; the leakage detection circuit is connected with a main controller of the electric water heater through a photoelectric coupler, the input end of the photoelectric coupler is grounded to a leakage detection loop, and the output end of the photoelectric coupler is connected with the main controller; the main controller detects whether the photoelectric coupler has high level output for more than 3 seconds, if so, the relay for controlling the electric heater is switched off; after the relay is disconnected, the main controller continues to detect whether the photoelectric coupler has high level output for more than 1 second, if yes, the environment ground wire is judged to be electrified, and if not, the electric water heater is judged to have electric leakage.
More preferably, a display is connected to the main controller, and the display displays different codes to distinguish between the environmental ground and the leakage.
More preferably, the input end of the photoelectric coupler is connected in series with a diode and a first resistor, and the output end of the photoelectric coupler is connected in series with a second resistor.
More preferably, the resistance of the first resistor is selected from 20K-150K Ω, and the resistance of the second resistor is 1K Ω.
More preferably, the master controller is connected with the cloud platform through the communication module, and maintenance personnel know the leakage fault information through the cloud platform.
More preferably, the main controller is connected with the intelligent terminal through the communication module, and the fault information of the electric water heater is notified to the user through the intelligent terminal.
More preferably, the communication module is a WiFi module, a bluetooth module or a 3G/4G/5G module.
More preferably, the intelligent terminal is a mobile phone or a tablet computer.
An electric water heater is characterized by having the electric leakage detection system of the electric water heater.
The invention has the beneficial effects that:
compared with the prior art, the electric leakage detection circuit is connected to the main control of the electric water heater, a special electric leakage judgment method is adopted, the electric leakage part of the electric water heater can be judged, and is displayed through the screen, so that a user or a maintainer is reminded of quickly judging a fault point, and fault maintenance is facilitated. Meanwhile, by distinguishing different faults, when only the electric heater leaks electricity, the power supply of the electric heater is automatically cut off, the electric heater is prevented from continuously leaking electricity, the electric water heater is kept to continuously discharge water, and the current water use is not influenced; when the ground wire of the environment leaks electricity reversely, the power supply of the electric heater is automatically cut off and the water outlet of the electric water heater is interrupted.
Drawings
Fig. 1 is a block diagram of a leakage detecting system of an electric water heater according to the present invention.
Fig. 2 is a circuit diagram of the leakage detection circuit.
Fig. 3 is a flowchart illustrating the operation of the electric leakage detecting system of the electric water heater according to the present invention.
Description of reference numerals:
1: ground wire, 2: wall, 3: leakage detection circuit, 4: photocoupler, 5: main controller, 6: electric heater, 7: a relay, 8: the display is operated.
Detailed Description
The following describes the embodiments of the present invention with reference to the drawings of the specification, so that the technical solutions and the advantages thereof are more clear and clear. The embodiments described below are exemplary and are intended to be illustrative of the invention, but are not to be construed as limiting the invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Example 1
As shown in fig. 1-3, an electric leakage detecting system of an electric water heater comprises an electric leakage detecting circuit 3 connected between a power connector ground wire 1 and a wall 2; the electric leakage detection circuit is characterized in that the electric leakage detection circuit 3 is connected with a main controller 5 of the electric water heater through a photoelectric coupler 4, the input end of the photoelectric coupler 4 is grounded to an electric leakage detection loop, and the output end of the photoelectric coupler 4 is connected with the main controller 5; the main controller 5 detects whether the photoelectric coupler 4 has high level output for more than 3 seconds, if so, the relay 7 for controlling the electric heater 6 is switched off; after the relay 7 is disconnected, the main controller 5 continues to detect whether the photoelectric coupler has high level output for more than 1 second, if yes, the environment ground wire is judged to be electrified, and if not, the electric water heater is judged to have electric leakage.
In order to facilitate users to better know the leakage fault information, the fault code E L represents that the environment ground wire is electrified, and the fault code D L represents that the electric water heater leaks electricity.
In this embodiment, the main controller 5 is preferably a single chip microcomputer. Preferably, a diode D0 and a first resistor R0 are connected in series to an input terminal of the photocoupler 4, and a second resistor R1 is connected in series to an output terminal of the photocoupler 4. The resistance value of the first resistor is selected from 20K-150K omega, and the resistance value of the second resistor is 1K omega.
Further, the main controller 5 is further connected with a communication module, and the main controller 5 is connected with the cloud platform and/or the intelligent terminal through the communication module, so that maintenance personnel can know the leakage fault information through the cloud platform or the intelligent terminal. In this embodiment, preferably, the communication module is a WiFi module, and preferably, the smart terminal is a mobile phone. In other embodiments, the communication module is a bluetooth module or a 3G/4G/5G module, and the intelligent terminal is a tablet computer; the present embodiment is not limited.
Compared with the prior art, the electric leakage detection system of the electric water heater provided by the embodiment has the advantages that the electric leakage detection circuit is connected to the main control of the electric water heater, a special electric leakage judgment method is adopted, the electric leakage part of the electric water heater can be judged, the electric leakage part is displayed through a screen, a user or a maintenance worker is reminded to quickly judge a fault point, and fault maintenance is facilitated. Meanwhile, by distinguishing different faults, when only the electric heater leaks electricity, the power supply of the electric heater is automatically cut off, the electric heater is prevented from continuously leaking electricity, the electric water heater is kept to continuously discharge water, and the current water use is not influenced; when the ground wire of the environment leaks electricity reversely, the power supply of the electric heater is automatically cut off and the water outlet of the electric water heater is interrupted. The water outlet interruption and maintenance of the electric water heater can be realized by an electric valve or an electromagnetic valve connected with a main controller.
Example 2
An electric water heater is characterized by having the electric water heater leakage detection system as described in embodiment 1.
The electric water heater provided by this embodiment has all the technical effects of embodiment 1, and as for the specific structure of the electric water heater, various structures that are known in the prior art or can be realized in the future can be adopted, and details are not described here.
It will be appreciated by those skilled in the art from the foregoing description of construction and principles that the invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the teachings of the art may be made without departing from the scope of the invention as defined by the appended claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.
Claims (9)
1. An electric leakage detection system of an electric water heater comprises an electric leakage detection circuit connected between a power supply connector ground wire and a wall; the leakage detection circuit is connected with a main controller of the electric water heater through a photoelectric coupler, the input end of the photoelectric coupler is grounded to a leakage detection loop, and the output end of the photoelectric coupler is connected with the main controller; the main controller detects whether the photoelectric coupler has high level output for more than 3 seconds, if so, the relay for controlling the electric heater is switched off; after the relay is disconnected, the main controller continues to detect whether the photoelectric coupler has high level output for more than 1 second, if yes, the environment ground wire is judged to be electrified, and if not, the electric water heater is judged to have electric leakage.
2. The electric leakage detection system of the electric water heater according to claim 1, wherein a display is connected to the main controller, and different codes are displayed by the display to distinguish between the environment ground line electrification and the self electric leakage.
3. The electric water heater leakage detection system of claim 1, wherein the input end of the photoelectric coupler is connected in series with a diode and a first resistor, and the output end of the photoelectric coupler is connected in series with a second resistor.
4. An electrical leakage detecting system of an electric water heater as claimed in claim 3, wherein the resistance of the first resistor is selected from 20K-150K Ω, and the resistance of the second resistor is 1K Ω.
5. The electric water heater electric leakage detection system of claim 1, wherein the master controller is connected with the cloud platform through the communication module, and maintenance personnel can know the electric leakage fault information through the cloud platform.
6. The electric water heater leakage detection system of claim 1, wherein the master controller is connected to the intelligent terminal through the communication module, and the electric water heater fault information is notified to the user through the intelligent terminal.
7. An electric leakage detection system of an electric water heater according to claim 5 or 6, wherein the communication module is a WiFi module, a Bluetooth module or a 3G/4G/5G module.
8. The electric leakage detection system of the electric water heater according to claim 6, wherein the intelligent terminal is a mobile phone or a tablet computer.
9. An electric water heater having an electric leakage detecting system of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201734.1A CN111486599B (en) | 2020-03-20 | 2020-03-20 | Electric water heater electric leakage detection system and electric water heater |
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|---|---|---|---|
| CN202010201734.1A CN111486599B (en) | 2020-03-20 | 2020-03-20 | Electric water heater electric leakage detection system and electric water heater |
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| CN111486599A true CN111486599A (en) | 2020-08-04 |
| CN111486599B CN111486599B (en) | 2021-05-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758012A (en) * | 2021-08-10 | 2021-12-07 | 广东万家乐燃气具有限公司 | Double-ground wire fixing device for electric water heater and electric water heater |
| CN114061154A (en) * | 2021-11-02 | 2022-02-18 | 广东万家乐燃气具有限公司 | Water heater movable controller electric leakage alarm system |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191382Y (en) * | 1993-11-19 | 1995-03-08 | 张清泉 | Efficient three-phase water heater |
| JPH08184630A (en) * | 1994-12-28 | 1996-07-16 | Tokyo Gas Co Ltd | Failure diagnostic method for apparatus including electric circuit and component |
| CN1554909A (en) * | 2003-12-26 | 2004-12-15 | 谭启仁 | General leakage preventing wall device for monolithic processor controlled forced exhausting gas water heater |
| CN201032285Y (en) * | 2007-03-01 | 2008-03-05 | 海尔集团公司 | Electric water heater with ground wire live alarm protective equipment |
| JP2009153572A (en) * | 2007-12-25 | 2009-07-16 | Panasonic Corp | Shower apparatus |
| CN101650070A (en) * | 2009-08-28 | 2010-02-17 | 宁波方太厨具有限公司 | Electric water heater with ground wire electrification detection function |
| JP2010266148A (en) * | 2009-05-15 | 2010-11-25 | Nippon Itomic Co Ltd | Device and method of controlling temperature of water heater |
| CN202141202U (en) * | 2011-05-25 | 2012-02-08 | 法罗力热能设备(中国)有限公司 | Electric heater with groundwire live line detecting and alarming as well as protecting |
| CN103187706A (en) * | 2011-12-28 | 2013-07-03 | 樱花卫厨（中国）股份有限公司 | Voltage detection leakage protection device for electric water heater |
| CN204254900U (en) * | 2014-11-10 | 2015-04-08 | 广东神州燃气用具有限公司 | A kind of shock preventing protector of electric of electric heater |
| KR20150059859A (en) * | 2013-11-25 | 2015-06-03 | 주식회사 캔투 | Boiler for hot water mat |
| CN104795790A (en) * | 2015-03-27 | 2015-07-22 | 余姚市嘉荣电子电器有限公司 | Leakage protector device capable of automatically identifying and switching voltage and current |
| CN206831846U (en) * | 2017-05-27 | 2018-01-02 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its protection device |
| CN207335190U (en) * | 2017-06-20 | 2018-05-08 | 佛山市顺德区欧必德热能科技有限公司 | A kind of proof and electric leakage-proof safety system |
| CN207501466U (en) * | 2017-12-01 | 2018-06-15 | 广东万家乐燃气具有限公司 | Control system of electric water heater and electric heater |
| CN108736439A (en) * | 2018-07-20 | 2018-11-02 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device |
| 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 |
| CN208253939U (en) * | 2018-05-08 | 2018-12-18 | 青岛经济技术开发区海尔热水器有限公司 | A kind of electric heater |
| CN109581141A (en) * | 2018-12-14 | 2019-04-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of electrical leakage detecting method and electric heater of electric heater |
-
2020
- 2020-03-20 CN CN202010201734.1A patent/CN111486599B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2191382Y (en) * | 1993-11-19 | 1995-03-08 | 张清泉 | Efficient three-phase water heater |
| JPH08184630A (en) * | 1994-12-28 | 1996-07-16 | Tokyo Gas Co Ltd | Failure diagnostic method for apparatus including electric circuit and component |
| CN1554909A (en) * | 2003-12-26 | 2004-12-15 | 谭启仁 | General leakage preventing wall device for monolithic processor controlled forced exhausting gas water heater |
| CN201032285Y (en) * | 2007-03-01 | 2008-03-05 | 海尔集团公司 | Electric water heater with ground wire live alarm protective equipment |
| JP2009153572A (en) * | 2007-12-25 | 2009-07-16 | Panasonic Corp | Shower apparatus |
| JP2010266148A (en) * | 2009-05-15 | 2010-11-25 | Nippon Itomic Co Ltd | Device and method of controlling temperature of water heater |
| CN101650070A (en) * | 2009-08-28 | 2010-02-17 | 宁波方太厨具有限公司 | Electric water heater with ground wire electrification detection function |
| CN202141202U (en) * | 2011-05-25 | 2012-02-08 | 法罗力热能设备(中国)有限公司 | Electric heater with groundwire live line detecting and alarming as well as protecting |
| CN103187706A (en) * | 2011-12-28 | 2013-07-03 | 樱花卫厨（中国）股份有限公司 | Voltage detection leakage protection device for electric water heater |
| KR20150059859A (en) * | 2013-11-25 | 2015-06-03 | 주식회사 캔투 | Boiler for hot water mat |
| CN204254900U (en) * | 2014-11-10 | 2015-04-08 | 广东神州燃气用具有限公司 | A kind of shock preventing protector of electric of electric heater |
| CN104795790A (en) * | 2015-03-27 | 2015-07-22 | 余姚市嘉荣电子电器有限公司 | Leakage protector device capable of automatically identifying and switching voltage and current |
| CN206831846U (en) * | 2017-05-27 | 2018-01-02 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its protection device |
| CN207335190U (en) * | 2017-06-20 | 2018-05-08 | 佛山市顺德区欧必德热能科技有限公司 | A kind of proof and electric leakage-proof safety system |
| CN207501466U (en) * | 2017-12-01 | 2018-06-15 | 广东万家乐燃气具有限公司 | Control system of electric water heater and electric heater |
| CN208253939U (en) * | 2018-05-08 | 2018-12-18 | 青岛经济技术开发区海尔热水器有限公司 | A kind of electric heater |
| CN108736439A (en) * | 2018-07-20 | 2018-11-02 | 余姚市嘉荣电子电器有限公司 | A kind of earth leakage protective device |
| 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 |
| CN109581141A (en) * | 2018-12-14 | 2019-04-05 | 青岛经济技术开发区海尔热水器有限公司 | A kind of electrical leakage detecting method and electric heater of electric heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758012A (en) * | 2021-08-10 | 2021-12-07 | 广东万家乐燃气具有限公司 | Double-ground wire fixing device for electric water heater and electric water heater |
| CN114061154A (en) * | 2021-11-02 | 2022-02-18 | 广东万家乐燃气具有限公司 | Water heater movable controller electric leakage alarm system |
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| CN111486599B (en) | 2021-05-14 |
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