CN206353643U - Leakage protecting plug and electric heater - Google Patents
Leakage protecting plug and electric heater Download PDFInfo
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- CN206353643U CN206353643U CN201621404936.1U CN201621404936U CN206353643U CN 206353643 U CN206353643 U CN 206353643U CN 201621404936 U CN201621404936 U CN 201621404936U CN 206353643 U CN206353643 U CN 206353643U
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- live wire
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Abstract
The utility model discloses a kind of leakage protecting plug and electric heater, the leakage protecting plug includes：Three pole pins, three pole pins are attached with grafting form and external power receptacle；Three-pole gang operated switch, three-pole gang operated switch is connected with three pole pins accesses zero line, live wire and the ground wire of power supply with connection and disjunction；First detection unit, the first detection unit correspondence zero line and live wire are set, and the first detection unit is by detecting the electric leakage signal of zero line or live wire to judge whether zero line or live wire leak electricity；Trip circuit, trip circuit generates the first dropout instruction when zero line or live wire leak electricity；Tripping mechanism, tripping mechanism is connected with trip circuit and three-pole gang operated switch respectively, tripping mechanism is controlled when receiving the first dropout instruction to three-pole gang operated switch, so that zero line, live wire and ground wire are in disjunction state, so as to effectively ensure Electrical Safety.
Description
Technical field
The utility model is related to household electrical appliance technical field, more particularly to a kind of leakage protecting plug and a kind of electric hot water
Device.
Background technology
At present, electric heater is to use mains-supplied, can have some potential safety hazards when using mains-supplied.For example,
When the insulating barrier of charging member inside electric heater is destroyed, the situation that zero line or live wire can be caused to leak electricity, and then
It may be such that the danger that user gets an electric shock.Or when supply line occurs abnormal, also user can be got an electric shock
It is dangerous.
Accordingly, it would be desirable to targetedly be improved current electric heater.
Utility model content
The utility model is intended at least solve one of technical problem in above-mentioned technology to a certain extent.Therefore, this reality
It is to propose a kind of leakage protecting plug with a new purpose, can effectively ensures Electrical Safety.
Second purpose of the present utility model is to propose a kind of electric heater.
To reach above-mentioned purpose, the utility model proposes a kind of leakage protecting plug, it includes：Three pole pins, it is described
Three pole pins are attached with grafting form and external power receptacle；Three-pole gang operated switch, the three-pole gang operated switch with it is described
Three pole pins are connected to connect zero line, live wire and ground wire with disjunction access power supply；First detection unit, first detection is single
The member correspondence zero line and the live wire are set, and first detection unit is by detecting the electric leakage of the zero line or the live wire
Signal is to judge whether the zero line or the live wire leak electricity；Trip circuit, the trip circuit is in the zero line or institute
State the dropout of generation first instruction when live wire leaks electricity；Tripping mechanism, the tripping mechanism respectively with the trip circuit and institute
State three-pole gang operated switch to be connected, the tripping mechanism enters the three-pole gang operated switch when receiving the first dropout instruction
Row control, so that the zero line, the live wire and the ground wire are in disjunction state.
According to leakage protecting plug of the present utility model, the electric leakage signal of zero line or live wire is detected by the first detection unit
To judge whether zero line or live wire leak electricity, and generate when zero line or live wire leak electricity by trip circuit the first dropout
Instruction, tripping mechanism is controlled when receiving the first dropout instruction to three-pole gang operated switch, so that zero line, live wire and ground wire
Disjunction state is in, so as to effectively ensure Electrical Safety.
In addition, according to the utility model proposes leakage protecting plug can also have technical characteristic additional as follows：
Specifically, described leakage protecting plug also includes：Second detection unit, the second detection unit correspondence is described
Ground wire is set, and second detection unit is described by detection when the leakage protecting plug is under current mode mode of operation
Whether ground wire is powered to export the first ground wire electrification signal；Mode switch element, the mode switch element and the described second inspection
Survey unit to be connected, the mode switch element is to control the leakage protecting plug in the current mode mode of operation and voltage
Switched between type mode of operation, and the first ground wire electrification signal is sent to the trip circuit, so that described thread off
Circuit is threaded off according to the first ground wire electrification signal generation second and instructed, and the tripping mechanism is receiving second dropout
The three-pole gang operated switch is controlled during instruction, so that the zero line, the live wire and the ground wire are in disjunction shape
State.
Specifically, described leakage protecting plug also includes：3rd detection unit, the 3rd detection unit correspondence is described
Zero line and the ground wire are set, and the 3rd detection unit is logical when the leakage protecting plug is under voltage-type mode of operation
Cross and detect the voltage signal between the zero line and the ground wire to export the second ground wire electrification signal, wherein, the pattern is cut
Change unit with the 3rd detection unit to be connected, the mode switch element sends the second ground wire electrification signal to described
Trip circuit, is instructed, the dropout machine so that the trip circuit is threaded off according to the second ground wire electrification signal generation the 3rd
Structure is controlled when receiving the 3rd dropout instruction to the three-pole gang operated switch, so that the zero line, the live wire
Disjunction state is in the ground wire.
Specifically, first detection unit, second detection unit and the 3rd detection unit are electromagnetic wire
Circle.
Specifically, described leakage protecting plug also includes：First drive amplification circuit, the first drive amplification circuit
Be connected between first detection unit and the trip circuit, the first drive amplification circuit by by the zero line or
The electric leakage signal of the live wire is amplified, and the electric leakage signal after amplification is sent to the trip circuit；Second driving is put
Big circuit, second drive amplification is electrically connected between the mode switch element and the trip circuit, and described second
Drive amplification circuit is by the way that the first ground wire electrification signal or the second ground wire strip line signal are amplified, and by the ground wire after amplification
Charged signal is sent to the trip circuit.
Specifically, the electric leakage of the zero line or the live wire that the trip circuit is detected in first detection unit
When current value is more than or equal to the first pre-set current value, judge that the zero line or the live wire leak electricity.
Specifically, second detection unit is more than or equal to the second pre-set current value in the current value for detecting the ground wire
When, export the first ground wire electrification signal.
Specifically, the 3rd detection unit is more than or equal to the detecting the voltage between the zero line and the ground wire
During one preset voltage value, the second ground wire electrification signal is exported.
To reach above-mentioned purpose, the utility model also proposed a kind of electric heater, and it includes：Above-mentioned earth leakage protective is inserted
Head；Body；Mains cord and connector, the mains cord are connected with the leakage protecting plug and the connector respectively,
The connector is used to connect the body.
According to electric heater of the present utility model, it can effectively be ensured by using above-mentioned leakage protecting plug
Electrical Safety.
In addition, according to the utility model proposes electric heater can also have technical characteristic additional as follows：
Specifically, inner bag and heater are provided with the body, control is also associated between the connector and the body
Warm device and thermal circuit beraker.
Brief description of the drawings
Fig. 1 is the structural representation of the leakage protecting plug according to the utility model embodiment；
Fig. 2 is the structural representation of the electric heater according to the utility model embodiment；
Fig. 3 is the structural representation of the power line according to the utility model one embodiment；And
Fig. 4 is the electrical principle block diagram of the electric heater according to the utility model one embodiment.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
The leakage protecting plug and electric heater of the utility model embodiment described below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the leakage protecting plug according to the utility model embodiment.The utility model embodiment
Leakage protecting plug can be applied in the electrical equipment such as electric heater.As shown in figure 1, the earth leakage protective of the utility model embodiment is inserted
Head, including：Three pole pins 101, three-pole gang operated switch 102, the first detection unit 103, trip circuit 104 and tripping mechanism 105.
Wherein, three pole pins 101 are attached with grafting form and external power receptacle.Three-pole gang operated switch 102 and three
Pole pin 101 is connected to connect zero line N, live wire L and ground wire E with disjunction access power supply.The corresponding zero line of first detection unit 103
N and live wire L are set, and the first detection unit 103 is by detecting zero line N or live wire L electric leakage signal to judge zero line N or live wire L
Whether leak electricity.Trip circuit 104 generates the first dropout instruction when zero line N or live wire L leak electricity.Tripping mechanism 105
It is connected respectively with trip circuit 104 and three-pole gang operated switch 102, tripping mechanism 105 is when receiving the first dropout instruction to three
Pole linked switch 102 is controlled, so that zero line N, live wire L and ground wire E are in disjunction state.
Specifically, three pole pins 101 can for single-phase the two poles of the earth band three pole inserted sheets structure, and with grafting form and external electrical
Supply socket carries out city and is electrically connected.First detection unit 103 can be magnet coil, the electric leakage signal for detecting zero line N or live wire L
And judge whether zero line N or live wire L leak electricity, pass through the generation of trip circuit 104 the when zero line N or live wire L leak electricity
One, which threads off, is instructed, and tripping mechanism 105 is controlled when receiving the first dropout instruction to three-pole gang operated switch 102, so that zero
Line N, live wire L and ground wire E are in disjunction state, so as to effectively ensure Electrical Safety.
In one embodiment of the present utility model, as shown in figure 1, above-mentioned leakage protecting plug may also include：First
Drive amplification circuit 109.First drive amplification circuit 109 is connected between the first detection unit 103 and trip circuit 104, the
One drive amplification circuit 109 is sent out by the way that zero line N or live wire L electric leakage signal are amplified, and by the electric leakage signal after amplification
Deliver to trip circuit 104.
Further, trip circuit 104 is detected in the first detection unit 103 zero line N or live wire L leakage current value
During more than or equal to the first pre-set current value, judge that zero line N or live wire L leak electricity.Wherein, the first pre-set current value can be according to reality
Border situation is demarcated, and the scope of the first pre-set current value may be generally disposed within 30mA, and preferred value is 5mA, 6mA, 10mA
And 15mA.
In one embodiment of the present utility model, leakage protecting plug is applied in electric heater, if electric heater
Failure of insulation occurs for internal electrification device, then zero line N or live wire L can be caused to occur leaky.Pass through the first detection unit
103 detection zero line N or live wire L electric leakage signal to judge whether zero line N or live wire L leak electricity, if detect zero line N or
Live wire L leakage current value is more than or equal to the first pre-set current value, then judges that zero line N or live wire L leak electricity.In zero line N or
When live wire L leaks electricity, zero line N or live wire L electric leakage signal are sent to the first drive amplification circuit 109, the first driving is put
Big circuit 109 amplifies electric leakage signal, and the electric leakage signal after amplification is sent into trip circuit 104, passes through trip circuit 104
Generation first, which is threaded off, to be instructed, and tripping mechanism 105 is controlled when receiving the first dropout instruction to three-pole gang operated switch 102,
So that three-pole gang operated switch 102 produces trip action, zero line N, live wire L and ground wire E is quickly set to be in disjunction state, this
Sample has just completely cut through the electrical connection between electric heater and external power source so that electric heater is in the state without electric safety,
So as to effectively ensure Electrical Safety.
According to the leakage protecting plug of the utility model embodiment, the leakage of zero line or live wire is detected by the first detection unit
Electric signal generates when zero line or live wire leak electricity to judge whether zero line or live wire leak electricity by trip circuit
One, which threads off, is instructed, and tripping mechanism is controlled when receiving the first dropout instruction to three-pole gang operated switch, so that zero line, live wire
Disjunction state is in ground wire, so as to effectively ensure Electrical Safety.
In one embodiment of the present utility model, as shown in figure 1, above-mentioned leakage protecting plug may also include：Second
Detection unit 106 and mode switch element 107.Wherein, the corresponding ground wire E of the second detection unit 106 is set, the second detection unit
106 when leakage protecting plug is under current mode mode of operation, by detecting whether ground wire E is powered to export the first ground strip
Electric signal.Mode switch element 107 is connected with the second detection unit 106, and mode switch element 107 is to control earth leakage protective to insert
Head is switched between current mode mode of operation and voltage-type mode of operation, and the first ground wire electrification signal is sent to electricity of threading off
Road 104, is instructed so that trip circuit 104 is threaded off according to the first ground wire electrification signal generation second, and tripping mechanism 105 is being received
Second threads off is controlled when instructing to three-pole gang operated switch 102, so that zero line N, live wire L and ground wire E are in disjunction state.
Specifically, the second detection unit 106 can be magnet coil, judge for detecting whether ground wire E has the electric current to flow through
Whether ground wire E is powered.
In one embodiment of the present utility model, as shown in figure 1, being inserted in the control earth leakage protective of mode switch element 107
When head is under current mode mode of operation, above-mentioned leakage protecting plug may also include：Second drive amplification circuit 110.Second
Drive amplification circuit 110 is connected between mode switch element 107 and trip circuit 104, and the second drive amplification circuit 110 passes through
First ground wire electrification signal is amplified, and the ground wire electrification signal after amplification is sent to trip circuit 104.
In one embodiment of the present utility model, trip circuit 104 detects ground wire E's in the second detection unit 106
When current value is more than or equal to the second pre-set current value, the first ground wire electrification signal is exported.Wherein, the second pre-set current value can basis
Actual conditions are demarcated, and the scope of the second pre-set current value may be generally disposed within 50mA, and preferred value is 15mA and 30mA.
Specifically, if the external power source of electric heater may cause the ground wire E of leakage protecting plug powered extremely, make
Obtain electric heater and be likely to become electrical body, control leakage protecting plug to be in current mode Working mould by mode switch element 107
Formula.Detect whether ground wire E is powered by the second detection unit 103, be more than or equal to the if detecting and flowing through ground wire E current value
Two pre-set current values, then judge that ground wire E is powered, and exports the first ground wire electrification signal.When ground wire E is powered, driven by second
Dynamic amplifying circuit 110 amplifies the first ground wire electrification signal, and the first ground wire electrification signal after amplification is sent to electricity of threading off
Road 104, is threaded off according to the first ground wire electrification signal generation second by trip circuit 104 and instructed, and tripping mechanism 105 is being received
Second threads off is controlled when instructing to three-pole gang operated switch 102, so that three-pole gang operated switch 102 produces trip action,
Quickly zero line N, live wire L and ground wire E is in disjunction state, thus completely cut through between electric heater and external power source
Electrical connection so that electric heater is in the state without electric safety, so as to effectively ensure Electrical Safety.
In one embodiment of the present utility model, as shown in figure 1, above-mentioned leakage protecting plug may also include：3rd
Detection unit 108.3rd detection unit 108 corresponding zero line N and ground wire E are set, and the 3rd detection unit 108 is in leakage protecting plug
When under voltage-type mode of operation, by detecting the voltage signal between zero line N and ground wire E to export the second ground strip telecommunications
Number, wherein, mode switch element 107 is connected 108 with the 3rd detection unit, and mode switch element 107 is by the second ground strip telecommunications
Number send to trip circuit 104, instruct, thread off so that trip circuit 104 is threaded off according to the second ground wire electrification signal generation the 3rd
Mechanism 105 is controlled when receiving the 3rd dropout instruction to three-pole gang operated switch 102, so that zero line N, live wire L and ground wire E
It is in disjunction state.
Specifically, the 3rd detection unit 108 can be magnet coil, for detecting between zero line N and ground wire E whether there is electricity
Press signal.
In one embodiment of the present utility model, as shown in figure 1, being inserted in the control earth leakage protective of mode switch element 107
When head is under voltage-type mode of operation, above-mentioned leakage protecting plug can be by the second drive amplification circuit 110 by the second ground
Line strip line signal is amplified, and the ground wire electrification signal after amplification is sent to trip circuit 104.Trip circuit 104 is
When the voltage that three detection units 108 detect between zero line N and ground wire E is more than or equal to the first preset voltage value, the second ground is exported
Tape electric signal.Wherein, the first preset voltage value can be demarcated according to actual conditions, and the scope of the first preset voltage value is general
It may be provided within 50V.
Specifically, if the external power source of electric heater may cause extremely leakage protecting plug zero line N and ground wire E it
Between have voltage, due to zero line N be typically zero potential, ground wire E be electriferous state, then cause electric heater be likely to become electrical body,
Leakage protecting plug is controlled to be in voltage-type mode of operation by mode switch element 107.Detected by the 3rd detection unit 108
Whether there is voltage between zero line N and ground wire E, if the voltage detected between zero line N and ground wire E is more than or equal to the first default electricity
Pressure value, then judge there is voltage between zero line N and ground wire E, and exports the second ground wire electrification signal.Have between zero line N and ground wire E
During voltage, second ground wire electrification signal is amplified by the second drive amplification circuit 110, and by the second ground wire electrification after amplification
Signal is sent to trip circuit 104, is threaded off and instructed according to the second ground wire electrification signal generation the 3rd by trip circuit 104, is taken off
Buckle mechanism 105 is controlled when receiving the 3rd dropout instruction to three-pole gang operated switch 102, so that three-pole gang operated switch
102 produce trip action, zero line N, live wire L and ground wire E is in disjunction state, have thus completely cut through electric hot water
Electrical connection between device and external power source so that electric heater is in the state without electric safety, so as to effectively ensure use
Electric safety.
It is appreciated that by Setting pattern switch unit on leakage protecting plug, mode switch element is to control electric leakage
Protection plug is switched between current mode mode of operation and voltage-type mode of operation, when current mode pattern works, works as outside
When the ground wire of power supply has interference signal input, the misoperation of ground wire electrification can be caused, now, switched to as deposit Working mould
The voltage-type mode of operation of formula, has further ensured the security of electricity consumption.
In summary, according to the leakage protecting plug of the utility model embodiment, zero line N or live wire L can either occur
Protected, powered to ground wire E can be protected again during electric leakage, so can not only failure electric leakage of hedging electric heater itself
The Danger Electric shock risk of generation, additionally it is possible to which the ground wire electrification bad to supply line's environment realizes power-off insulation blocking, so that further
Ground improves the security of electric heater.
Fig. 2 is the structural representation of the electric heater according to the utility model embodiment.As shown in Fig. 2 the utility model
The electric heater of embodiment may include：Power line 100 and body 200.Wherein, as shown in figure 3, power line 100 may include it is above-mentioned
Leakage protecting plug 110, mains cord 120 and the connector 130 of embodiment description.Mains cord 120 respectively with earth leakage protective
Plug 110 is connected with connector 130, and connector 130 is used to connect body 200.
Specifically, leakage protecting plug 100 is that electric heater is engaged the device for realizing electrical connection with external power receptacle,
With switching on power, the function of disjunction power supply, zero fiery earth leakage protective and earth wire charged protecting.Mains cord 120, which is used to leak electricity, to be protected
Protect the electrical connection of plug 110 and connector 130.The electrical connection that connector 130 is used between mains cord 120 and body 200.
In one embodiment of the present utility model, as shown in Fig. 2 being provided with inner bag 201 and heater 202 in body 200.
Thermostat 300 and thermal circuit beraker 400 are also associated between connector 130 and body 200.
Specifically, the inner bag 201 set in body 200 is positive displacement utensil, available for storage water.The heater set in body
202 can be used for heating the water that inner bag 201 is stored.As shown in figure 4, thermal circuit beraker 400 may be connected to the fire of power line 100
On line L and zero line N, the temperature that thermal circuit beraker 400 can be set by user carries out power-off protection to heater 202.Thermostat 300 can
It is connected between thermal circuit beraker 400 and body, the temperature that thermostat 300 can be set by user makes heater 202 and external power source
Turn on automatically or disconnection.
It should be noted that the details not disclosed in the electric heater of the utility model embodiment, refer to this practicality
Details disclosed in the leakage protecting plug of new embodiment, specific I will not elaborate.
According to the electric heater of the utility model embodiment, it, can be effective by using above-mentioned leakage protecting plug
Ground ensures Electrical Safety.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ",
The orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings
Orientation or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model
Limitation.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two
More than, unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (10)
1. a kind of leakage protecting plug, it is characterised in that including：
Three pole pins, three pole pin is attached with grafting form and external power receptacle；
Three-pole gang operated switch, the three-pole gang operated switch is connected with three pole pin accesses the zero of power supply with connection and disjunction
Line, live wire and ground wire；
First detection unit, the first detection unit correspondence zero line and the live wire are set, first detection unit
By detecting the electric leakage signal of the zero line or the live wire to judge whether the zero line or the live wire leak electricity；
Trip circuit, the trip circuit generates the first dropout instruction when the zero line or the live wire leak electricity；
Tripping mechanism, the tripping mechanism is connected with the trip circuit and the three-pole gang operated switch respectively, the dropout machine
Structure is controlled when receiving the first dropout instruction to the three-pole gang operated switch, so that the zero line, the live wire
Disjunction state is in the ground wire.
2. leakage protecting plug according to claim 1, it is characterised in that also include：
Second detection unit, the second detection unit correspondence ground wire is set, and second detection unit is in the electric leakage
By detecting whether the ground wire is powered to export the first ground wire electrification signal when protection plug is under current mode mode of operation；
Mode switch element, the mode switch element is connected with second detection unit, and the mode switch element is used to
The leakage protecting plug is controlled to be switched between the current mode mode of operation and voltage-type mode of operation, and by described
One ground wire electrification signal is sent to the trip circuit, so that the trip circuit is according to the first ground wire electrification signal generation
Second, which threads off, is instructed, and the tripping mechanism is controlled when receiving the second dropout instruction to the three-pole gang operated switch
System, so that the zero line, the live wire and the ground wire are in disjunction state.
3. leakage protecting plug according to claim 2, it is characterised in that also include：
3rd detection unit, the 3rd detection unit correspondence zero line and the ground wire are set, the 3rd detection unit
When the leakage protecting plug is under voltage-type mode of operation by detecting the voltage between the zero line and the ground wire
Signal to export the second ground wire electrification signal, wherein, the mode switch element is connected with the 3rd detection unit, the mould
Formula switch unit sends the second ground wire electrification signal to the trip circuit, so that the trip circuit is according to described
Two ground wire electrification signal generations the 3rd, which are threaded off, to be instructed, and the tripping mechanism is when receiving the 3rd dropout instruction to described three
Pole linked switch is controlled, so that the zero line, the live wire and the ground wire are in disjunction state.
4. leakage protecting plug according to claim 3, it is characterised in that first detection unit, second inspection
It is magnet coil to survey unit and the 3rd detection unit.
5. leakage protecting plug according to claim 3, it is characterised in that also include：
First drive amplification circuit, first drive amplification is electrically connected to first detection unit and the trip circuit
Between, the first drive amplification circuit will be amplified by the way that the electric leakage signal of the zero line or the live wire is amplified
Electric leakage signal afterwards is sent to the trip circuit；
Second drive amplification circuit, second drive amplification is electrically connected to the mode switch element and the trip circuit
Between, the second drive amplification circuit by the way that the first ground wire electrification signal or the second ground wire strip line signal are amplified, and
Ground wire electrification signal after amplification is sent to the trip circuit.
6. leakage protecting plug according to claim 1, it is characterised in that the trip circuit is single in the described first detection
When the zero line or the leakage current value of the live wire that member is detected are more than or equal to the first pre-set current value, the zero line is judged
Or the live wire leaks electricity.
7. leakage protecting plug according to claim 2, it is characterised in that second detection unit detect it is described
When the current value of ground wire is more than or equal to the second pre-set current value, the first ground wire electrification signal is exported.
8. leakage protecting plug according to claim 3, it is characterised in that the 3rd detection unit detect it is described
When voltage between zero line and the ground wire is more than or equal to the first preset voltage value, the second ground wire electrification signal is exported.
9. a kind of electric heater, it is characterised in that including：
Leakage protecting plug according to any one of claim 1-8；
Body；
Mains cord and connector, the mains cord are connected with the leakage protecting plug and the connector respectively, described
Connector is used to connect the body.
10. electric heater according to claim 9, it is characterised in that inner bag and heater are provided with the body, described
Thermostat and thermal circuit beraker are also associated between connector and the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621404936.1U CN206353643U (en) | 2016-12-20 | 2016-12-20 | Leakage protecting plug and electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621404936.1U CN206353643U (en) | 2016-12-20 | 2016-12-20 | Leakage protecting plug and electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206353643U true CN206353643U (en) | 2017-07-25 |
Family
ID=59348082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621404936.1U Active CN206353643U (en) | 2016-12-20 | 2016-12-20 | Leakage protecting plug and electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206353643U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011256A (en) * | 2016-12-20 | 2018-05-08 | 芜湖美的厨卫电器制造有限公司 | Leakage protecting plug and electric heater |
| CN109595821A (en) * | 2017-09-30 | 2019-04-09 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its security protection system |
-
2016
- 2016-12-20 CN CN201621404936.1U patent/CN206353643U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108011256A (en) * | 2016-12-20 | 2018-05-08 | 芜湖美的厨卫电器制造有限公司 | Leakage protecting plug and electric heater |
| CN108011256B (en) * | 2016-12-20 | 2023-10-27 | 芜湖美的厨卫电器制造有限公司 | Leakage protection plug and electric water heater |
| CN109595821A (en) * | 2017-09-30 | 2019-04-09 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its security protection system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220919 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East Wuhu economic and Technological Development Zone, Wuhu, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |