CN108023330B - Leakage protection method, apparatus and water heater - Google Patents
Leakage protection method, apparatus and water heater Download PDFInfo
- Publication number
- CN108023330B CN108023330B CN201711325923.4A CN201711325923A CN108023330B CN 108023330 B CN108023330 B CN 108023330B CN 201711325923 A CN201711325923 A CN 201711325923A CN 108023330 B CN108023330 B CN 108023330B
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- electric appliance
- leakage
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- detection
- electricity
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/14—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to occurrence of voltage on parts normally at earth potential
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses leakage protection method, apparatus and water heaters, are related to field of water heaters.The present invention provides a kind of leakage protection method, comprising: whether the first electric appliance of detection leaks electricity.Detect whether the second electric appliance leaks electricity.When detecting first electric appliance and/or second electrical leakage, the power supply of first electric appliance is disconnected, and cuts off the output water flow of first electric appliance.A kind of leakage protection device disconnects switch including the first earth detector for detecting the first electrical leakage, the second earth detector for detecting the second electrical leakage, the earth leakage circuit-breaker for disconnecting the first appliances power source and the water flow for disconnecting the first electric appliance output water flow.A kind of water heater, which employs above-mentioned leakage protection devices.Leakage protection method, apparatus provided by the invention and water heater be avoided that user get an electric shock, guarantee user using safe.
Description
Technical field
The present invention relates to field of water heaters, in particular to leakage protection method, apparatus and water heater.
Background technique
At present in water heater industry, there are water heaters itself or external electric leakage potentially to the threat of user, on the market
The scheme of most of water heater reply equipment leakage is mostly based on ground protection and two pole leakage protecting plugs.But it is domestic at present
The Grounding of household electricity environment allows of no optimist, and many old cells and self-built local-style dwelling houses be not up to standard on grounding specifications and requirement,
It is threatened in the presence of potential electric shock.Once earth leakage circuit-breaker failure, and ground connection is unreliable, equipment leakage can be along electrical appliance machine
The conductors such as shell, metallic water pipe, bathing water flow, power supply line ground wire are conducted to Danger Electric shock risk caused by human body, are user security bathings
One big threaten.
Summary of the invention
The purpose of the present invention is to provide a kind of leakage protection methods, to guarantee in the first electric appliance or the second electrical leakage
When cut off the power supply of the first electric appliance and cut off the output water flow of the first electric appliance, avoid to using the user of the first electric appliance to cause
The danger of electric shock ensure that the personal safety of user.
Another object of the present invention is to provide a kind of leakage protection device, can guarantee in the first electric appliance or the second electricity
Device cuts off the power supply of the first electric appliance and cuts off the output water flow of the first electric appliance when leaking electricity, avoid to using using for the first electric appliance
Person causes the danger of electric shock, ensure that the personal safety of user.
Another object of the present invention is to provide a kind of water heater, can guarantee in the first electric appliance or the second electrical leakage
When cut off the power supply of the first electric appliance and cut off the output water flow of the first electric appliance, avoid to using the user of the first electric appliance to cause
The danger of electric shock ensure that the personal safety of user.
The present invention provides a kind of technical solution:
A kind of leakage protection method, comprising:
Detect whether the first electric appliance leaks electricity.
Detect whether the second electric appliance leaks electricity.
When detecting first electric appliance and/or second electrical leakage, the power supply of first electric appliance is disconnected, and
Cut off the output water flow of first electric appliance.
Further, the step of whether the first electric appliance of the detection leaks electricity and the step whether the second electric appliance of the detection leaks electricity
Suddenly respectively include:
Whether the power supply line that detection connects first electric appliance leaks electricity.
Whether the power supply line that detection connects second electric appliance leaks electricity.
Further, the step of whether power supply line that the detection connects first electric appliance leaks electricity and detection connection
The step of whether power supply line of second electric appliance leaks electricity respectively include:
Detection connects the firewire of first electric appliance or whether zero curve leaks electricity.
Whether the ground wire that detection connects second electric appliance leaks electricity.
Further, the output water flow step of cutting first electric appliance includes:
The electric current in the solenoid valve for the water-filled pipe for being connected to first electric appliance is cut off, so that the solenoid valve cuts off institute
State water-filled pipe.
Further, the step of whether the first electric appliance of the detection leaks electricity and the step whether the second electric appliance of the detection leaks electricity
Before rapid further include:
Detection is connected to first electric appliance and whether the ground wire of second electric appliance is grounded well.
When described ground wire grounded bad, the step of whether the first electric appliance of the detection leaks electricity and the detection second executed
The step of whether electric appliance leaks electricity.
A kind of leakage protection device, the leakage protection device include: the first earth detector, for detecting the first electricity
Whether device leaks electricity.Second earth detector, for detecting whether the second electric appliance leaks electricity.Earth leakage circuit-breaker, the electric leakage are protected
Shield switch is electrically connected with first earth detector, and the earth leakage circuit-breaker is electrically connected with second earth detector
It connects, the earth leakage circuit-breaker is used to disconnect the power supply of first electric appliance.Water flow disconnects device, for disconnecting first electricity
The water flow of device.
Further, first earth detector includes at least two first zero sequence current mutual inductors, at least one
First zero sequence current mutual inductor is electrically connected with the firewire for being connected to first electric appliance, at least one described first zero sequence electricity
Current transformer is electrically connected with the zero curve for being connected to first electric appliance, and first zero sequence current mutual inductor is connected to for detecting
The firewire or the leakage current on the zero curve of first electric appliance.
Further, second earth detector includes at least one second zero sequence current mutual inductor, at least one
Second zero sequence current mutual inductor be connected to being electrically connected to ground for second electric appliance, second zero sequence current mutual inductor
For detecting the electric leakage for being connected to the ground wire of second electric appliance.
Further, it includes solenoid valve that the water flow, which disconnects device, and the solenoid valve is connected to the logical of first electric appliance
Water lines cut off the water-filled pipe solenoid valve is for being connected the water-filled pipe or power-off when being powered when.
A kind of water heater, including water heater main body and leakage protection device, the leakage protection device include: the first electric leakage
Detection device, for detecting whether the first electric appliance leaks electricity.Second earth detector, for detecting whether the second electric appliance leaks electricity.
Earth leakage circuit-breaker, the earth leakage circuit-breaker are electrically connected with first earth detector, the earth leakage circuit-breaker with
The second earth detector electrical connection, the earth leakage circuit-breaker are used to disconnect the power supply of first electric appliance.Water flow is disconnected
Opening apparatus, for disconnecting the water flow of first electric appliance.First earth detector, the earth leakage circuit-breaker and described
Water flow disconnects device and is electrically connected with the water heater main body.
Compared with prior art, the beneficial effect of leakage protection method provided by the invention is:
By the first electrical leakage of detection or the second electrical leakage is detected to close the power supply of the first electric appliance, to avoid the
The danger that the electric leakage of one electric appliance therein causes the user of the first electric appliance to get an electric shock, and it is avoided that the second electricity other than the first electric appliance
Leak conductance to the first electric appliance simultaneously is caused to get an electric shock using the user of the first electric appliance by device electric leakage, in addition, passing through the first electricity of cutting
The output water flow of device is further kept away to avoid the electric leakage for using the user of the first electric appliance to contact the output water flow conduction of the first electric appliance
Exempt from user's electric shock, ensure that the personal safety of user.
Compared with prior art, the beneficial effect of leakage protection device and water heater provided by the invention is:
The electric leakage of the first electric appliance is detected by the first earth detector, or passes through the second earth detector detection the
The electric leakage of two electric appliances, and by the power supply of earth leakage circuit-breaker the first electric appliance of closing, to guarantee to use the user of the first electric appliance
It not will receive the first electrical leakage and cause Danger Electric shock risk, and guarantee user not and will receive the second electrical leakage to conduct to first
Electric appliance causes user to pass through the danger that the first electric appliance gets an electric shock.Also, the output that device disconnects the first electric appliance is disconnected by water flow
Water flow contacts electric leakage derived from output water flow to avoid user and causes Danger Electric shock risk, ensure that the personal safety of user.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.It should be appreciated that the following drawings illustrates only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of range.It for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the flow chart for the leakage protection method that the first embodiment of the present invention provides；
Fig. 2 is the flow chart for the leakage protection method that the first embodiment of the present invention provides；
Fig. 3 is the structural schematic diagram for the leakage protection device that the second embodiment of the present invention provides；
Fig. 4 is the structural schematic diagram for the leakage protection device that the second embodiment of the present invention provides.
Icon: the first electric appliance of 11-；The second electric appliance of 12-；The first earth detector of 100-；The first zero-sequence current of 110- is mutual
Sensor；The second earth detector of 200-；The second zero sequence current mutual inductor of 210-；300- earth leakage circuit-breaker；400- water flow is disconnected
Switch；410- solenoid valve；500- detector.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it is to be understood that, term " on ", "lower", "inner", "outside", "left", "right" etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when usually put
Orientation or positional relationship or the orientation or positional relationship that usually understands of those skilled in the art, be merely for convenience of retouching
It states the present invention and simplifies description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relatively important
Property.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, " setting ", " even
Connect " etc. terms shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be and be directly connected to, can also be indirectly connected with by intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
With reference to the accompanying drawing, detailed description of the preferred embodiments.
First embodiment
Referring to Fig. 1, a kind of leakage protection method is present embodiments provided, to guarantee in the first electric appliance or the second electric appliance
The power supply of the first electric appliance is cut off when electric leakage and cuts off the output water flow of the first electric appliance, is avoided to the user for using the first electric appliance
The danger for causing electric shock, ensure that the personal safety of user.
Wherein, in the present embodiment, the first electric appliance be user or the electric appliance that will use, that is, user can
It can generate and contact with the first electric appliance, or be contacted by other conductors with the generation of the first electric appliance.Second electric appliance is then except first
Other electric appliances other than electric appliance.
For example, in the present embodiment, the first electric appliance is water heater, then user may be to be used or will use
Water heater, user may contact the shell of water heater, or contact flows through the output water flow of water heater and connects indirectly with water heater
Touching.Second electric appliance is then the electric appliances such as other electric appliances, such as washing machine, refrigerator or television set in addition to water heater.
It should be appreciated that in other embodiments, the first electric appliance is also possible to other electric appliances, such as water dispenser or electronic
Water pump etc..
Please refer to Fig. 1 and Fig. 2, wherein leakage protection method includes:
Whether S101, the first electric appliance of detection leak electricity.
In addition, step S101 further includes step S1011 in the present embodiment.
Whether the power supply line of S1011, detection the first electric appliance of connection leak electricity.
Further, in the present embodiment, whether the power supply line of the first electric appliance of detection connection leaks electricity specifically, detecting connection
Whether the firewire or zero curve of the first electric appliance leak electricity, wherein when the firewire or zero curve that connect the first electric appliance leak electricity, then
It can detect the induced current of certain value.
Alternatively, the electric leakage of the power supply line of detection the second electric appliance of connection.
Whether S102, the second electric appliance of detection leak electricity.
In addition, step S102 further includes step S1021 in the present embodiment
Whether the power supply line of S1021, detection the second electric appliance of connection leak electricity.
Further, in the present embodiment, whether the power supply line of the second electric appliance of detection connection leaks electricity specifically, detecting connection
The electric leakage of the ground wire of second electric appliance.
It should be noted that the implementation sequence of step S101 and step S102 can convert, i.e., in other embodiments
It can detect whether the second electric appliance leaks electricity in step S101, detect whether the first electric appliance leaks electricity in step S102.
In addition, in the present embodiment, leakage protection method further include:
Before detecting the second electrical leakage of the first electrical leakage or detection, detection is connected to the first electric appliance and the second electricity
Whether the ground wire of device is grounded well, if ground wire grounded bad, carries out step S101.
It should be noted that in the present embodiment, if being connected to the ground wire of the first electric appliance and being connected to the second electric appliance
It is ground wire grounded good, then it does not need to carry out detection of electrical leakage.It should be appreciated that in other embodiments, it can also be good in ground connection
In the case of carry out detection of electrical leakage.
In addition, the ground wire for being connected to the first electric appliance proposed in the present embodiment and being connected to the ground wire grounded good of the second electric appliance
It well further include the case where the first electric appliance or the second electric appliance are fitted without ground line.
S103 disconnects the power supply of the first electric appliance, and cut off the when detecting the first electric appliance and/or the second electrical leakage
The output water flow of one electric appliance.
Wherein, the shell or the first electric appliance for avoiding electric leakage from directly passing through the first electric appliance by disconnecting the power supply of the first electric appliance
Other conducting positions directly by leak conductance to user, the danger that causes user to get an electric shock.Meanwhile being avoided that the second electric appliance
Leak conductance to the first electric appliance, and by the shell of the first electric appliance or other conducting positions of the first electric appliance by leak conductance extremely
User, the danger for causing user to get an electric shock.It ensure that the personal safety of user.
By cutting off the output water flow of the first electric appliance, guarantee the first electric appliance will not by output water flow by leak conductance to making
User further avoids user's electric shock, guarantees the personal safety of user.
It should be noted that the case where referred to when detecting the first electric appliance and/or the second electrical leakage includes: detection
To the first electrical leakage without detecting the second electrical leakage；Or.It does not detect the first electrical leakage and detects
Two electrical leakages；Alternatively, being detected simultaneously by the first electric appliance and the second electric appliance leaks electricity.
Wherein, the output water flow of the first electric appliance is cut off specifically, cutting is connected to the electromagnetism of the water-filled pipe of the first electric appliance
Electric current in valve, so that solenoid valve cuts off water-filled pipe.
In the present embodiment, after the power supply for cutting off the first electric appliance, the electric current in solenoid valve is then disconnected, solenoid valve power loss
It closes, so that solenoid valve cuts off water-filled pipe, that is, has cut off the output water flow of the first electric appliance.
The leakage protection method provided in the present embodiment passes through the second electrical leakage of the first electrical leakage of detection or detection
With the power supply of the first electric appliance of closing, the danger for causing the user of the first electric appliance to get an electric shock to avoid the electric leakage of the first electric appliance therein
Danger, and be avoided that the second electrical leakage other than the first electric appliance and lead to leak conductance to the first electric appliance using the first electric appliance
User's electric shock, in addition, using user's contact first of the first electric appliance by the output water flow of the first electric appliance of cutting
Electric appliance exports the electric leakage of water flow conduction, further avoids user's electric shock, ensure that the personal safety of user.
Second embodiment
Fig. 3 and Fig. 4 are please referred to, a kind of leakage protection device (figure is not marked) is provided in the present embodiment, can guarantee
The power supply of the first electric appliance 11 is cut off when the first electric appliance 11 or the second electric appliance 12 leak electricity and cuts off the output of the first electric appliance 11
Water flow avoids ensure that the personal safety of user to the danger for using the user of the first electric appliance 11 to cause electric shock.
Wherein, leakage protection device includes the first earth detector 100, the second earth detector 200, earth leakage protective
Switch 300 and water flow disconnect switch 400.Wherein, whether the first earth detector 100 leaks electricity for the first electric appliance 11 of detection,
Second earth detector 200 is for detecting whether the second electric appliance 12 leaks electricity.Earth leakage circuit-breaker 300 and the first detection of electrical leakage fill
100 electrical connections are set, earth leakage circuit-breaker 300 is electrically connected with the second earth detector 200, and earth leakage circuit-breaker 300 is used
Detect that the electric leakage of the first electric appliance 11 and/or the second earth detector 200 detect second in working as the first earth detector 100
When electric appliance 12 leaks electricity, the power supply of the first electric appliance 11 is disconnected.In addition, water flow disconnects the output water that device is used to disconnect the first electric appliance 11
Stream.
It should be noted that in the present embodiment, when the first earth detector 100 detects that the first electric appliance 11 leaks electricity
And/or second earth detector 200 detect the second electric appliance 12 electric leakage when it is referred to the case where include: the first detection of electrical leakage fill
It sets 100 and detects that the first electric appliance 11 leaks electricity, the second earth detector 200 does not detect that the second electric appliance 12 leaks electricity；Alternatively, the
One earth detector 100 does not detect that the first electric appliance 11 leaks electricity, and the second earth detector 200 detects the second electric appliance 12
Electric leakage；Alternatively, the first earth detector 100 detects the electric leakage of the first electric appliance 11 and the second earth detector 200 detects
It leaks electricity to the second electric appliance 12.
In the present embodiment, the first earth detector 100 includes at least two first zero sequence current mutual inductors 110, until
Few first zero sequence current mutual inductor 110 is electrically connected with the firewire for being connected to the first electric appliance 11, at least one first zero sequence electricity
Current transformer 110 is electrically connected with the zero curve for being connected to the first electric appliance 11.That is, wherein passing through each first zero sequence current mutual inductor
110 detect the electric leakage in the firewire, zero curve or ground wire for being connected to the first electric appliance 11 of connection respectively.It is generated when in firewire and zero curve
When electric leakage, then the first zero sequence current mutual inductor 110 can then detect certain induced current, when induced current is more than certain value
When, then the power supply of the first electric appliance 11 can be disconnected by earth leakage circuit-breaker 300, be will not continue to generate and be leaked electricity to guarantee to leak electricity
It will not be by the shell of the first electric appliance 11 or other conducting positions by leak conductance to user.
In addition, the second earth detector 200 includes at least one second zero sequence current mutual inductor 210, at least one the
Two zero sequence current mutual inductors 210 be connected to being electrically connected to ground for the second electric appliance 12.Second zero sequence current mutual inductor 210 is for examining
Survey the electric leakage being connected on the ground wire of the second electric appliance 12.When the value of the electric leakage on the ground wire for being connected to the second electric appliance 12 is more than certain
When value, then the power supply of the first electric appliance 11 is disconnected by earth leakage circuit-breaker 300, will not continue to generate and leak electricity to guarantee to leak electricity
It will not be by the shell of the first electric appliance 11 or other conducting positions by leak conductance to user.
It should be noted that wherein, the first zero sequence current mutual inductor 110 and the second zero sequence current mutual inductor 210 can phases
Together.Also, the first zero sequence current mutual inductor 110 can also be installed on the ground wire for being connected to the first electric appliance 11, to detect connection
Electric leakage on the ground wire of the first electric appliance 11.Second zero sequence current mutual inductor 210, which can also be installed in, is connected to the second electric appliance 12
Firewire or zero curve on detect electric leakage.
In addition, leakage protection device further includes detector 500 in the present embodiment, wherein detector 500 and the first electric leakage
Detection device 100 and the connection of the second earth detector 200, to detect the ground wire for being connected to the first electric appliance 11 and the second electric appliance 12
Whether it is grounded good.If being connected to ground wire grounded good, disconnection the first electric leakage inspection of the first electric appliance 11 and the second electric appliance 12
Survey the electric current of device 100 and the second earth detector 200, that is, do not need the first earth detector 100 and the second electric leakage inspection
It surveys device 200 and carries out detection of electrical leakage, can directly pass through ground wire for leak conductance to the danger for greatly, that is, being avoided that user's electric shock
Danger.It should be appreciated that in other embodiments, it can also be in the ground wire grounded good situation of the first electric appliance 11 and the second electric appliance 12
The first earth detector 100 of lower unlatching and the second earth detector 200 are to carry out detection of electrical leakage.In addition, if the first electricity
Ground wire grounded not good or the first electric appliance 11 or the not set ground line of the second electric appliance 12 of device 11 and the second electric appliance 12, then
The first earth detector 100 and the second earth detector 200 are opened to carry out detection of electrical leakage.Guarantee the person peace of user
Entirely.
It should be appreciated that in other embodiments, the setting of detector 500 can also be cancelled.
It includes solenoid valve 410 that water flow, which disconnects device, and solenoid valve 410 is connected to the water-filled pipe of the first electric appliance 11, and electricity
Magnet valve 410 is for being connected water-filled pipe when being powered, alternatively, cutting off water-filled pipe when power-off.In the present embodiment, solenoid valve 410
Pass through the power supply power supply of the first electric appliance 11, that is, when the first electric appliance 11 is powered, solenoid valve 410 is connected, so that water-filled pipe energy
Water flowing；When first electric appliance 11 powers off, solenoid valve 410 is closed, and to cut off water-filled pipe, that is, cuts off the output water of the first electric appliance 11
Stream.
The leakage protection device provided in the present embodiment detects the leakage of the first electric appliance 11 by the first earth detector 100
Electricity, or closed by the electric leakage of the second earth detector 200 the second electric appliance 12 of detection, and by earth leakage circuit-breaker 300
The power supply of first electric appliance 11 causes electric shock to endanger to guarantee not will receive the electric leakage of the first electric appliance 11 using the user of the first electric appliance 11
Danger, and guarantee user not and will receive that 12 leak conductance of the second electric appliance to the first electric appliance 11 causes user to pass through the first electric appliance
The danger of 11 electric shocks.Also, the output water flow that device disconnects the first electric appliance 11 is disconnected by water flow, is contacted to avoid user defeated
The derived electric leakage of water outlet stream causes Danger Electric shock risk, ensure that the personal safety of user.
3rd embodiment
A kind of water heater (figure is not marked) is provided in the present embodiment, can guarantee in the first electric appliance 11 or the second electric appliance 12
The power supply of the first electric appliance 11 is cut off when electric leakage and cuts off the output water flow of the first electric appliance 11, is avoided to using the first electric appliance 11
User causes the danger of electric shock, ensure that the personal safety of user.
Wherein, water heater includes the leakage protection device provided in water heater main body (figure is not marked) and second embodiment,
In, the first earth detector 100 is electrically connected with water heater main body, to detect whether water heater main body leaks electricity.Earth leakage protective is opened
It closes 300 to be electrically connected with water heater main body, to disconnect hot water when detecting that the electric leakage of water heater main body and/or the second electric appliance 12 are leaked electricity
The power supply of device main body.Water flow disconnects switch 400 and is electrically connected with water heater main body, so that detecting the electric leakage of water heater main body
And/or the output water flow of water heater main body is cut off when the second electric leakage of electric appliance 12.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of leakage protection method characterized by comprising
When the first electric appliance and the second electric appliance it is ground wire grounded bad when；
Detect whether the first electric appliance leaks electricity；
Whether the ground wire of detection the second electric appliance of connection leaks electricity；
When detecting the ground wire electric leakage of first electric appliance and/or connection second electric appliance, first electric appliance is disconnected
Power supply, and cut off the output water flow of first electric appliance.
2. leakage protection method according to claim 1, which is characterized in that the step whether the first electric appliance of the detection leaks electricity
The step of whether rapid and the second electric appliance of the detection leaks electricity respectively include:
Whether the power supply line that detection connects first electric appliance leaks electricity.
3. leakage protection method according to claim 2, which is characterized in that the detection connects the electricity of first electric appliance
The step of whether the step of whether source line leaks electricity and the power supply line that the detection connects second electric appliance leak electricity respectively include:
Detection connects the firewire of first electric appliance or whether zero curve leaks electricity.
4. leakage protection method according to claim 1, which is characterized in that the output water of cutting first electric appliance
Flow step includes:
The electric current in the solenoid valve for the water-filled pipe for being connected to first electric appliance is cut off, so that solenoid valve cutting is described logical
Water lines.
5. leakage protection method according to claim 1, which is characterized in that the step whether the first electric appliance of the detection leaks electricity
Before the step of whether rapid and the second electric appliance of the detection leaks electricity further include:
Detection is connected to first electric appliance and whether the ground wire of second electric appliance is grounded well；
When described ground wire grounded bad, the step of whether the first electric appliance of the detection leaks electricity and the second electric appliance of the detection executed
The step of whether leaking electricity.
6. a kind of leakage protection device, which is characterized in that the leakage protection device includes:
First earth detector, for the first electric appliance and the second electric appliance it is ground wire grounded bad when whether detect the first electric appliance
Electric leakage；
Second earth detector, for the first electric appliance and the second electric appliance it is ground wire grounded bad when whether detect the second electric appliance
Electric leakage；
Earth leakage circuit-breaker, the earth leakage circuit-breaker are electrically connected with first earth detector, and the earth leakage protective is opened
Pass is electrically connected with second earth detector, and the earth leakage circuit-breaker is used to disconnect the power supply of first electric appliance；
Water flow disconnects device, for disconnecting the water flow of first electric appliance；
Second earth detector includes at least one second zero sequence current mutual inductor, at least one described second zero sequence electricity
Current transformer is connected to being electrically connected to ground for second electric appliance, second zero sequence current mutual inductor is connected to for detecting
The electric leakage of the ground wire of second electric appliance.
7. leakage protection device according to claim 6, which is characterized in that first earth detector includes at least
Two the first zero sequence current mutual inductors, at least one described first zero sequence current mutual inductor and the fire for being connected to first electric appliance
Line electrical connection, at least one described first zero sequence current mutual inductor is electrically connected with the zero curve for being connected to first electric appliance, described
First zero sequence current mutual inductor is used to detect the firewire for being connected to first electric appliance or the electric leakage electricity on the zero curve
Stream.
8. leakage protection device according to claim 6, which is characterized in that it includes solenoid valve that the water flow, which disconnects device,
The solenoid valve is connected to the water-filled pipe of first electric appliance, the solenoid valve for be connected when being powered the water-filled pipe or
Person cuts off the water-filled pipe when powering off.
9. a kind of water heater, which is characterized in that the electric leakage including water heater main body and as described in claim 6-8 any one is anti-
Protection unit, first earth detector, the earth leakage circuit-breaker and the water flow disconnect device with the water heater
Main body electrical connection.
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| CN201711325923.4A CN108023330B (en) | 2017-12-12 | 2017-12-12 | Leakage protection method, apparatus and water heater |
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| CN201711325923.4A CN108023330B (en) | 2017-12-12 | 2017-12-12 | Leakage protection method, apparatus and water heater |
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| CN108023330A CN108023330A (en) | 2018-05-11 |
| CN108023330B true CN108023330B (en) | 2019-11-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108983027A (en) * | 2018-07-26 | 2018-12-11 | 上海与德科技有限公司 | Electrical leakage detecting method, device, intelligent socket and storage medium |
| CN111102748A (en) * | 2018-10-26 | 2020-05-05 | 青岛经济技术开发区海尔热水器有限公司 | Control method of electric water heater and electric water heater |
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| CN1289163A (en) * | 2000-11-06 | 2001-03-28 | 刘锦泰 | Leakage protector |
| JP2004069097A (en) * | 2002-08-02 | 2004-03-04 | Fuji Acetylene Kogyo Kk | Breaker device for gas hot water supply apparatus |
| CN201562950U (en) * | 2009-11-27 | 2010-08-25 | 欧永源 | Leakage protection device of electric water heater |
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| CN106998017A (en) * | 2017-05-25 | 2017-08-01 | 浙江明佳环保科技有限公司 | A kind of electric heater power-off bathing protection socket |
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| CN1289163A (en) * | 2000-11-06 | 2001-03-28 | 刘锦泰 | Leakage protector |
| JP2004069097A (en) * | 2002-08-02 | 2004-03-04 | Fuji Acetylene Kogyo Kk | Breaker device for gas hot water supply apparatus |
| CN201562950U (en) * | 2009-11-27 | 2010-08-25 | 欧永源 | Leakage protection device of electric water heater |
| CN105783273A (en) * | 2016-04-29 | 2016-07-20 | 芜湖美的厨卫电器制造有限公司 | Water heater |
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| CN108023330A (en) | 2018-05-11 |
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