CN206831847U - Electric heater and its heating control apparatus - Google Patents
Electric heater and its heating control apparatus Download PDFInfo
- Publication number
- CN206831847U CN206831847U CN201720622738.0U CN201720622738U CN206831847U CN 206831847 U CN206831847 U CN 206831847U CN 201720622738 U CN201720622738 U CN 201720622738U CN 206831847 U CN206831847 U CN 206831847U
- Authority
- CN
- China
- Prior art keywords
- relay
- circuit
- detection
- heating
- control
- Prior art date
- 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.)
- Withdrawn - After Issue
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 159
- 238000001514 detection method Methods 0.000 claims abstract description 252
- 230000005611 electricity Effects 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of electric heater and its heating control apparatus, the heating control apparatus includes：Multiple first relays, each first relay is correspondingly connected in each heating circuit, with the break-make of heating circuit corresponding to control；Second relay, the second relay are connected with the common port of each heating circuit, to control the break-make of multiple heating circuits；Multiple detection units, each detection unit correspondingly detect the working condition of each first relay to export detection signal；Control unit, when control unit judges that any one first relay breaks down according to detection signal, by being controlled such that each heater strip is stopped to each first relay and the second relay.The control device can reliably control relay be disconnected when relay breaks down, and avoids the occurrence of the situation of more high-power heater strips while work, and then the high-current device of electric heater can be protected, while eliminates disaster hidden-trouble.
Description
Technical field
It the utility model is related to technical field of water heaters, more particularly to the heating control apparatus and one kind of a kind of electric heater
Electric heater.
Background technology
At present, electric heater mostly uses the break-make of Control heater strip, as requirement of the client to speed heat is more next
Higher, the power of single heater strip is also gradually rising.For example, for the electric heater with speed heat or immediate thermal function, meeting
Using more high-power heater strips, the power of single heater strip reaches more than 2500W.
However, the power of the supply line of ordinary municipal, the 5000W that can be born or so, once control relay
Circuit breaks down or relay damaged, may make electric heater while open more high-power heater strips, so as to make
The electric power of electric heater is more than 5000W.This can produce damage to the high-current device of electric heater, also can be to the electricity of user
Netting twine road is caused to damage, and fire can be caused when serious.
Utility model content
The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.Therefore, this reality
It is to propose a kind of heating control apparatus of electric heater with first new purpose, the control device can occur in relay
Reliably control relay disconnects during failure, avoids the occurrence of the situation of more high-power heater strips while work, and then can be right
The high current components of electric heater are protected, while eliminate disaster hidden-trouble.
Second purpose of the present utility model is to propose a kind of electric heater.
To reach above-mentioned purpose, the utility model first aspect proposes a kind of heating control apparatus of water heater, described
Electric heater includes multiple heating circuits in parallel, and a heater strip, the heating control apparatus are provided with each heating circuit
Including：Multiple first relays, each first relay in the multiple first relay are correspondingly connected to each heat back
Lu Zhong, with the break-make of heating circuit corresponding to control；Second relay, second relay are public with each heating circuit
End is connected, to control whole break-makes of the multiple heating circuit；Multiple detection units, it is each in the multiple detection unit
Detection unit correspondingly detects the working condition of each first relay to export detection signal；Control unit, described control unit
It is connected respectively with each first relay, second relay and each detection unit, described control unit root
When any one for judging in the multiple first relay according to the detection signal breaks down, by described each first
Each heater strip that relay and second relay are controlled such that in multiple heating circuits is stopped.
It is corresponding by the corresponding control of each first relay according to the heating control apparatus of electric heater of the present utility model
Heating circuit break-make, whole break-makes of the multiple heating circuits of the second Control, the corresponding detection of each detection unit is every
To export detection signal, control unit judges in multiple first relays the working condition of individual first relay according to detection signal
Any one when breaking down, by being controlled such that multiple heating circuits to each first relay and the second relay
In each heater strip be stopped.Thus, the control device can when relay breaks down reliably control relay
Disconnect, avoid the occurrence of the situation of more high-power heater strips while work, and then the high current components of electric heater can be entered
Row protection, while eliminate disaster hidden-trouble.
In addition, can also be had according to the heating control apparatus of the utility model electric heater set forth above following additional
Technical characteristic：
Specifically, when the multiple heating circuit includes the first heating circuit and the second heating circuit, described first adds
Hot loop includes the first heater strip, and second heating circuit includes the second heater strip, and the multiple detection unit includes first
Detection unit and the second detection unit, one end of first heater strip are connected to power supply by second relay
Zero line side, the other end of first heater strip are connected to the power supply by the first relay in first heating circuit
The zero line of power supply, one end of second heater strip are connected to the zero line of the power supply by second relay
End, the other end of second heater strip are connected to the power supply by the first relay in second heating circuit
Zero line, wherein, detected when first detection unit and second detection unit corresponding at the first relay
When closure state, described control unit controls second relay to disconnect, so that first heating circuit and described the
Two heating circuits disconnect.
Further, first detection unit includes the multiple first detection circuits, and second detection unit includes more
Individual second detection circuit, each first detection circuit in the multiple first detection circuit be respectively used to detect described first plus
Accordingly to export first detection signal, the multiple second detects in circuit the working condition of the first relay in hot loop
Each second detection circuit is respectively used to detect the working condition of the first relay in second heating circuit with corresponding defeated
Go out the second detection signal, wherein, when first of any one the first detection circuit output in the multiple first detection circuit
When the first detection signal of detection signal and the detection circuit output of residue first is inconsistent, described control unit judges described first
Detection unit breaks down, and controls second relay to disconnect, so that first heating circuit and second heating
Loop disconnects；When the multiple second detection circuit in any one second detection circuit output the second detection signal with
When second detection signal of the detection circuit output of residue second is inconsistent, described control unit judges the second detection unit hair
Raw failure, and control second relay to disconnect, so that first heating circuit and second heating circuit disconnect.
Specifically, described control unit is always according to each first detection first detection signal of circuit output and described
Second detection signal of each second detection circuit output judges the first relay in first heating circuit and described the
When one detection unit breaks down or judge that the first relay and described second in second heating circuit detects list
Member controls second relay to disconnect when breaking down, so that first heating circuit and second heating circuit are equal
Disconnect.
Specifically, described control unit includes：Multiple first control relay circuits, the multiple first Control
Each first control relay circuit in circuit correspondingly controls closure or the disconnection of each first relay；Second relay control
Circuit processed, second control relay circuit are used for closure or the disconnection for controlling second relay；Single-chip microcomputer, the list
Piece machine includes multiple first control ports, the second control port and multiple detection port sets, each first control port with it is each
First control relay circuit is corresponding to be connected, and second control port is connected with second control relay circuit, each
It is corresponding with each detection unit connected to detect port set.
Specifically, the first detection circuit is identical with the circuit structure of the described second detection circuit, and first inspection
Slowdown monitoring circuit includes：First resistor, one end of the first resistor are connected with the output switching terminal of first relay；Two poles
Pipe, the negative electrode of the diode are connected with the other end of the first resistor, the anode of the diode and the zero line side phase
Even；Photoelectrical coupler, the photoelectrical coupler include light emitting diode and phototriode, the anode point of the light emitting diode
Be not connected with the other end of the first resistor and the negative electrode of the diode, the negative electrode of the light emitting diode respectively with it is described
The anode of diode is connected with the zero line side；Second resistance, one end of the second resistance are connected with default power supply, and described
The other end of two resistance is connected with the colelctor electrode of the phototriode；3rd resistor, one end of the 3rd resistor respectively with
The other end of the second resistance is connected with the colelctor electrode of the phototriode；First electric capacity, one end of first electric capacity
It is connected with the other end of the 3rd resistor and there is the first tie point, first tie point is the described first detection circuit
Output end, the other end of first electric capacity are grounded after being connected with the emitter stage of the phototriode.
Further, when the first detection signal of the described first detection circuit output is square-wave signal, described first adds
The first relay in hot loop is in closure state.
To reach above-mentioned purpose, the utility model second aspect proposes a kind of electric heater, and it includes above-mentioned electric heating
The heating control apparatus of hydrophone.
Electric heater of the present utility model, by the heating control apparatus of above-mentioned electric heater, can occur in relay
Reliably control relay disconnects during failure, avoids the occurrence of the situation of more high-power heater strips while work, and then can be right
High current components are protected, while eliminate disaster hidden-trouble.
Brief description of the drawings
The above-mentioned and/or additional aspect of the utility model and advantage from the following description of the accompanying drawings of embodiments will
Become obvious and be readily appreciated that, wherein,
Fig. 1 is the block diagram according to the heating control apparatus of the electric heater of the utility model one embodiment；
Fig. 2 is the block diagram according to the heating control apparatus of the electric heater of the utility model another embodiment；
Fig. 3 is the circuit diagram according to the detection circuit of the utility model one embodiment；
Fig. 4 is the connection diagram according to the relay of the utility model one embodiment；And
Fig. 5 is the flow chart according to the method for heating and controlling of the electric heater of 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 is represented to same or similar label eventually or there is the element of same or like function.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 heating control apparatus, electric heater and electricity of the electric heater of the utility model embodiment are described below in conjunction with the accompanying drawings
The method for heating and controlling of water heater.
Fig. 1 is the block diagram according to the heating control apparatus of the electric heater of the utility model one embodiment.Its
In, electric heater includes multiple heating circuits in parallel, and a heater strip is provided with each heating circuit.As shown in figure 1, heating
Control device includes：Multiple first relays 10, the second relay 20, multiple detection units 30 and control unit 40.
Wherein, each first relay 10 in multiple first relays 10 is corresponding is connected in each heating circuit, with
The break-make of heating circuit corresponding to control.Second relay 20 is connected with the common port of each heating circuit, to control multiple add
Whole break-makes of hot loop.The corresponding work for detecting each first relay 10 of each detection unit 30 in multiple detection units 30
Make state to export detection signal.Control unit 40 respectively with each first relay 10, the second relay 20 and each detection
Unit 30 is connected, control unit 40 judge in multiple first relays 10 according to detection signal any one when breaking down,
By being controlled such that each heater strip in multiple heating circuits is equal to each relay 20 of first relay 10 and second
It is stopped.
Specifically, the first relay 10 can be 2 or more than 2, and accordingly, heater strip and detection unit 40 can be with
For 2 or more than 2.So that the first relay 10 is 2 as an example, when electric heater normal operation, two heater strips can not
It is operated simultaneously.Occur when short-circuit or two the first relays 10 occur for the control circuit of two the first relays 10 simultaneously
Adhesion fault, two the first relays 10 can be made all in closure state, so that two heater strips can be made while be operated, this
The high-current device of electric heater may be made to produce damage, can also damage be produced to the power network line of user, can draw when serious
Play fire.
Therefore, in embodiment of the present utility model, it is right when the first relay 10 is in different conditions (closure/disconnection)
The detection signal that the detection unit 30 that should be set exports is different.Control unit 40 may determine that the first relay according to detection signal
Whether device 10 occurs short trouble, if it is judged that short trouble, then control unit 40 occur for any one first relay 10
Control controls the second relay 20 to disconnect immediately, so that the current supply circuit of each heater strip disconnects, meanwhile, if the first relay
10 are off, then control unit 40 controls it to forbid closing, if the first relay 10 is in closure state, controls
It disconnects immediately.Thus, the control device can reliably control relay disconnects when relay breaks down, and avoids the occurrence of more
The situation that the high-power heater strip of root works simultaneously, and then the high-current device of electric heater can be protected, eliminate simultaneously
Disaster hidden-trouble.
Further, as shown in figure 1, according to one embodiment of the present utility model, when multiple heating circuits include first
When heating circuit and the second heating circuit, the first heating circuit includes the first heater strip 51, and the second heating circuit includes second and added
Heated filament 52, multiple detection units 30 include the first detection unit 31 and the second detection unit 32, and one end of the first heater strip 51 leads to
The zero line side N that the second relay 20 is connected to power supply AC is crossed, the other end of the first heater strip 51 passes through the first heating circuit
In the first relay 10 be connected to power supply AC zero line L, one end of the second heater strip 52 passes through the second relay 20
Power supply AC zero line side N is connected to, the other end of the second heater strip 52 passes through the first relay in the second heating circuit
10 are connected to power supply AC zero line L.Wherein, when the first detection unit 31 and the second detection unit 32 detect correspondingly
The first relay when being in closure state, control unit 40 controls the second relay 20 to disconnect so that the first heating circuit and
Second heating circuit disconnects.
That is, when electric heater has two high-power heater strips, the first relay 10 is 2, accordingly, inspection
It is 2 to survey unit 30.Control unit 40 can judge whether that two the first relays 10, which occur, to be closed at according to detection signal
Situation.If control unit 40 judges the situation that two the first relays 10 are closed at occurs, then control unit 40 is vertical
The second relay 20 is controlled to disconnect, so that the current supply circuit of each heater strip disconnects, so that each heater strip stops work
Make.Thus, the control device can avoid the occurrence of the situation of more high-power heater strips while work, and then can be to electric heater
High-current device protected, while eliminate disaster hidden-trouble.
According to one embodiment of the present utility model, as shown in Fig. 2 the first detection unit 31 can include the multiple first inspections
Slowdown monitoring circuit 311, the second detection unit 32 can include multiple second detection circuits 321, it is multiple first detection circuits 311 in it is every
Individual first detection circuit 311 is respectively used to detect the working condition of the first relay 10 in the first heating circuit accordingly to export
First detection signal, each second detection circuits 321 in multiple second detections circuits 321 be respectively used to detect described second plus
The working condition of the first relay 10 in hot loop exports the second detection signal with corresponding.Wherein, when the multiple first detection electricity
The first detection signal that any one first detection circuit 311 in road 311 exports detects the of circuit output with residue first
When one detection signal is inconsistent, control unit 40 judges that the first detection unit 31 breaks down, and controls the second relay 20 disconnected
Open, so that the first heating circuit and the second heating circuit disconnect.When multiple second detection circuits 321 in any one second
When the second detection signal that detection circuit 321 exports and inconsistent the second detection signal of the detection output of circuit 321 of residue second,
Control unit 40 judges that the second detection unit 32 breaks down, and controls the second relay 20 to disconnect, so that the first heating circuit
Disconnected with the second heating circuit.
Specifically, first detection circuit 311 and second detect circuit 321 can be 2 or more than.As shown in Fig. 2 with
Exemplified by the second detection circuit 321 in first detection unit 31 in the first detection detection unit 32 of circuit 311 and second is 2,
When in the first detection unit 31 two first detection circuit 311 export detection signal it is inconsistent when, then illustrate wherein some
First detection circuit 311 breaks down, now control unit 40 control the second relay 20 disconnect so that the first heating circuit and
Second heating circuit disconnects, and electric heater stops carrying out heating work.Similarly, as two second in the second detection unit 32
When the detection signal that detection circuit 321 exports is inconsistent, then illustrate that wherein some second detection circuit 321 breaks down, now
Control unit 40 controls the second relay 20 to disconnect, so that the first heating circuit and the second heating circuit disconnect, electric heater
Stop carrying out heating work.
Further, as shown in figure 3, the first detection circuit 311 is identical with the circuit structure of the second detection circuit 321, and
First detection circuit 311 can include：First resistor R1, the first diode D, photoelectrical coupler OC, second resistance R2, the 3rd electricity
Hinder R3 and the first electric capacity C1.
Wherein, first resistor R1 one end is connected with the output switching terminal of the first relay 10.First diode D negative electrode
It is connected with the first resistor R1 other end, the first diode D anode is connected with zero line side N.Photoelectrical coupler OC includes luminous
Diode VD and phototriode Q, light emitting diode VD anode respectively with the first resistor R1 other end and diode D the moon
Extremely it is connected, light emitting diode VD negative electrode is connected with the first diode D anode and zero line side N respectively
.Second resistance R2 one end is connected with default power supply VCC, and the second resistance R2 other end is with phototriode Q's
Colelctor electrode is connected.3rd resistor R3 one end is connected with the second resistance R2 other end and phototriode Q colelctor electrode respectively.
First electric capacity C1 one end is connected with the 3rd resistor R3 other end and is the first inspection with the first tie point A, the first tie point A
The output end of slowdown monitoring circuit 311, the first electric capacity C1 other end are grounded after being connected with phototriode Q emitter stage.
It is appreciated that in one embodiment of the present utility model, when the first detection letter that the first detection circuit 311 exports
When number being square-wave signal, the first relay 10 in the first heating circuit is in closure state.
Specifically, when the first relay 10 corresponding to the first detection unit 31 closes, 220V alternating current can be exported extremely
Two first detection circuits 311, by photoelectrical coupler OC and diode D reverse-conducting, photoelectrical coupler OC secondary meeting
Square-wave signal is produced, i.e., two first detection circuits 311 can export square-wave signal.When first relay 10 disconnects, two first
Detect circuit 311 and export low level signal.If control unit 40 judges that the detection signal that the first detection circuit 311 exports differs
Cause, for example, one be square-wave signal one when being low level signal, illustrate the wherein first detection circuit 311 may generation it is breaking
Failure, now, control unit 40 control the second relay 20 to disconnect, and forbid another first relay 10 to close, so that the
One heating circuit and the second heating circuit disconnect.
According to one embodiment of the present utility model, control unit 40 exports always according to each first detection circuit 311
First detection signal and it is each second detection circuit 321 export the second detection signal judge in the first heating circuit first after
When the detection unit 31 of electrical equipment 10 and first breaks down or judge the first relay 10 and second in the second heating circuit
Detection unit 32 controls the second relay 20 to disconnect when breaking down, so that the first heating circuit and the second heating circuit are disconnected
Open.
Specifically, when simultaneously short circuit occurs for the control circuit of two the first relays 10 or two the first relays 10 are sent out
Raw adhesion fault closes two the first relays 10, then first detection signal that each first detection circuit 311 exports and
The second detection signal that each second detection circuit 321 exports is square-wave signal, and control unit 40 controls the second relay immediately
Device 20 disconnects, so that the first heating circuit and the second heating circuit disconnect.Now, it is even if a certain in the first detection unit 31
Open circuit fault occurs for individual first detection circuit 311, and one of first detection signal is square-wave signal, and another believes for low level
Number；Or open circuit fault occurs for second some second detection circuit 321 in detection unit 32, one of them second detection letter
Number it is square-wave signal, another is low level signal, and control unit 40 is according to first detection signal and the second detection signal, still
Relay failure is may determine that, also can determine whether out detection fault.That is, even if a wherein alignment detection circuit occurs
Failure, another way still can reliably detect relay failure.Thus, in electric heater twin failure occurs for the device
When, it still can reliably control high-power heater strip to be stopped, improve the security of electric heater work.
In embodiment of the present utility model, as shown in Fig. 2 control unit 40 includes：Multiple first Control electricity
Road 401, the second control relay circuit 402 and single-chip microcomputer 403.
Wherein, the corresponding control of each first control relay circuit 401 in multiple first control relay circuits 401 is every
The closure of individual first relay 10 or disconnection.Second control relay circuit 402 be used for control the second relay 20 closure or
Disconnect.Single-chip microcomputer 403 includes multiple first control port U1, the second control port U2 and multiple detection port U3, and each first
Control port U1 is corresponding with each first control relay circuit 401 to be connected, the second control port U2 and the second Control
Circuit 402 is connected, and each detection port U3 is corresponding with each detection unit 30 to be connected.Single-chip microcomputer 403 is by controlling the first relay
Device control circuit 401, the second control relay circuit 402 control the break-make of the first relay 10 and the second relay 20 respectively.
It is appreciated that in embodiment of the present utility model, the first relay 10 and the second relay 20 include switch, line
Circle and diode, its connected mode are as shown in Figure 4.
In summary, according to the heating control apparatus of the electric heater of the utility model embodiment, by each first after
The break-make of heating circuit, whole break-makes of the multiple heating circuits of the second Control, Mei Gejian corresponding to the corresponding control of electrical equipment
Survey unit correspondingly detects the working condition of each first relay to export detection signal, if control unit is according to detection signal
Any one for judging in multiple first relays breaks down, then by being carried out to each first relay and the second relay
Control is so that each heater strip in multiple heating circuits is stopped；If control unit judges to detect according to detection signal
Unit breaks down, or judges that the first relay and corresponding detection unit break down, then controls the second relay to break
Open, so that the first heating circuit and the second heating circuit disconnect.Thus, in electric heater dual event can occur for the control device
Reliably control relay disconnects during barrier, avoids the occurrence of the situation of more high-power heater strips while work, and then can be to electricity
The high current components of water heater are protected, while eliminate disaster hidden-trouble.
In addition, the utility model embodiment also proposes a kind of electric heater, it includes the heating control of above-mentioned electric heater
Device processed.
The electric heater of the utility model embodiment, can be in relay by the heating control apparatus of above-mentioned electric heater
Reliably control relay disconnects when device breaks down, and avoids the occurrence of the situation of more high-power heater strips while work, and then
High current components can be protected, while eliminate disaster hidden-trouble.
Based on above-mentioned electric heater, the utility model embodiment also proposes a kind of method for heating and controlling of electric heater.Fig. 5
It is the flow chart according to the method for heating and controlling of the electric heater of the utility model one embodiment.As shown in figure 5, this method bag
Include following steps：
S1, the working condition of each first relay is detected to export detection signal.
S2, when any one for judging in multiple first relays according to detection signal breaks down, by each
Each heater strip that one relay and the second relay are controlled such that in multiple heating circuits is stopped.
Specifically, as shown in figure 1, when the first relay is in different conditions (closure/disconnection), the detection letter of corresponding output
Number difference.May determine that whether the first relay occurs short trouble according to detection signal, if it is judged that any one
Short trouble occurs for one relay, then controls and control the second relay to disconnect immediately, so that the current supply circuit of each heater strip breaks
Open, meanwhile, if the first relay is off, forbid closing, if the first relay is in closure state, stand
Disconnect.Thus, the control method can reliably control relay disconnects when relay breaks down, and avoids the occurrence of more big
The situation that power heater strip works simultaneously, and then the high-current device of electric heater can be protected, while eliminate fire
Hidden danger.
Further, as shown in figure 1, when multiple heating circuits include the first heating circuit and the second heating circuit, the
One heating circuit includes the first heater strip, and the second heating circuit includes the second heater strip, and multiple detection units include the first detection
Unit and the second detection unit, one end of the first heater strip are connected to the zero line side of power supply by the second relay, and first
The other end of heater strip is connected to the zero line of power supply, the second heater strip by the first relay in the first heating circuit
One end the zero line side of power supply is connected to by the second relay, the other end of the second heater strip passes through the second heating circuit
In the first relay be connected to the zero line of power supply.Wherein, when the first detection unit and the second detection unit detect
When being in closure state to corresponding first relay, the second relay of control disconnects, so that the first heating circuit and second adds
Hot loop disconnects.
That is, when electric heater has two high-power heater strips, the first relay is 2, accordingly, detection
Unit is 2.Can be judged whether that the situation that two the first relays are closed at occurs according to detection signal.If it is determined that hair
The situation that raw two the first relays are closed at, then control controls the second relay to disconnect immediately, so that each heater strip
Current supply circuit disconnects, so that each heater strip is stopped.Thus, the control device can avoid the occurrence of more it is high-power plus
The situation that heated filament works simultaneously, and then the high-current device of electric heater can be protected, while eliminate disaster hidden-trouble.
Further, as shown in Fig. 2 the first detection unit can include the multiple first detection circuits, the second detection unit
The multiple second detection circuits can be included, the multiple first each first detection circuits detected in circuits are respectively used to detection first
The working condition of the first relay in heating circuit is every in multiple second detections circuits accordingly to export first detection signal
The working condition that individual second detection circuit is respectively used to detect the first relay in the second heating circuit exports second with corresponding
Detection signal.
Wherein, when the first detection signal of any one the first detection circuit output in the multiple first detection circuits is with remaining
Remaining first detection circuit output first detection signal it is inconsistent when, control unit judges that the first detection unit breaks down, and
The second relay is controlled to disconnect, so that the first heating circuit and second heating circuit disconnect.When the multiple second detection electricity
Second detection signal of any one the second detection circuit output in road detects the second detection of circuit output with residue second
When signal is inconsistent, control unit judges that the second detection unit breaks down, and controls the second relay to disconnect, so that first adds
Hot loop and the second heating circuit disconnect.
When the first detection signal that circuit output is detected according to each first and the second of each second detection circuit output
When detection signal judges that the first relay in the first heating circuit and the first detection unit break down, or judge second
When the first relay and the second detection unit in heating circuit break down, the second relay of control disconnects, so that first
Heating circuit and the second heating circuit disconnect.
Specifically, first detection circuit and second detection circuit can be 2 or more than.As shown in Fig. 2 with the first inspection
Exemplified by the second detection circuit surveyed in unit in the first detection circuit and the second detection unit is 2, when in the first detection unit
Two first detection circuit outputs detection signals it is inconsistent when, then illustrate wherein some first detection circuit malfunctions,
Now control unit controls the second relay to disconnect, so that the first heating circuit and the second heating circuit disconnect, electric heater
Stop carrying out heating work.Similarly, when the detection signal of two second detection circuit outputs in the second detection unit is inconsistent
When, then illustrate wherein some second detection circuit malfunctions, now control unit controls the second relay to disconnect, so that first
Heating circuit and the second heating circuit disconnect, and electric heater stops carrying out heating work.
When simultaneously short circuit occurs for the control circuit of two the first relays or two the first relays stick together failure
Make two the first relay closures, then the first detection signal of each first detection circuit output and each second detection circuit
Second detection signal of output is square-wave signal, and control unit controls the second relay to disconnect immediately, so that first heats back
Road and the second heating circuit disconnect.Now, even if open circuit event occurs for some first detection circuit in the first detection unit
Barrier, one of first detection signal is square-wave signal, and another is low level signal；Or second is a certain in detection unit
Open circuit fault occurs for individual second detection circuit, and one of them second detection signal is square-wave signal, and another is low level signal,
Control unit still may determine that relay failure, also can determine whether out inspection according to first detection signal and the second detection signal
Slowdown monitoring circuit failure.That is, even if wherein detecting circuit malfunctions all the way, another way still can reliably detect after
Apparatus failure.Thus, this method still can reliably control high-power heater strip to stop when twin failure occurs for electric heater
Only work, improve the security of electric heater work.
In summary, according to the method for heating and controlling of the electric heater of the utility model embodiment, first, detection each the
The working condition of one relay is to export detection signal, if judged according to detection signal any one in multiple first relays
It is individual to break down, then it is each in multiple heating circuits by being controlled such that to each first relay and the second relay
Heater strip is stopped；If judge that detection unit is broken down or the first relay is examined with corresponding according to detection signal
Survey unit to break down, then control the second relay to disconnect, so that the first heating circuit and the second heating circuit disconnect.By
This, this method can electric heater occur twin failure when reliably control relay disconnect, avoid the occurrence of more high-power heating
The situation of silk work simultaneously, and then the high current components of electric heater can be protected, while eliminate disaster hidden-trouble.
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 ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., 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 by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, limited unless otherwise clear and definite.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
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 directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be 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 and be 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 specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present utility model.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 different embodiments or example and the feature of different embodiments or example described in this specification can be entered
Row combines and combination.
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 the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (8)
1. a kind of heating control apparatus of electric heater, it is characterised in that the electric heater returns including multiple heating in parallel
Road, a heater strip is provided with each heating circuit, the heating control apparatus includes：
Multiple first relays, each first relay in the multiple first relay are correspondingly connected to each heating circuit
In, with the break-make of heating circuit corresponding to control；
Second relay, second relay are connected with the common port of each heating circuit, to control the multiple heat back
Whole break-makes on road；
Multiple detection units, each detection unit in the multiple detection unit correspondingly detect the work of each first relay
State is to export detection signal；
Control unit, described control unit respectively with each first relay, second relay and each inspection
Survey unit to be connected, described control unit judges any one generation in the multiple first relay according to the detection signal
It is every in multiple heating circuits by being controlled such that to each first relay and second relay during failure
Individual heater strip is stopped.
2. the heating control apparatus of electric heater as claimed in claim 1, it is characterised in that when the multiple heating circuit bag
When including the first heating circuit and the second heating circuit, first heating circuit includes the first heater strip, and described second heats back
Road includes the second heater strip, and the multiple detection unit includes the first detection unit and the second detection unit, first heating
One end of silk is connected to the zero line side of power supply by second relay, and the other end of first heater strip passes through institute
The zero line that the first relay in the first heating circuit is connected to the power supply is stated, one end of second heater strip leads to
The zero line side that second relay is connected to the power supply is crossed, the other end of second heater strip passes through described second
The first relay in heating circuit is connected to the zero line of the power supply, wherein,
First relay corresponding to being detected when first detection unit and second detection unit is in closure state
When, described control unit controls second relay to disconnect, so that first heating circuit and second heating circuit
Disconnect.
3. the heating control apparatus of electric heater as claimed in claim 2, it is characterised in that first detection unit includes
Multiple first detection circuits, second detection unit include the multiple second detection circuits, and the multiple first detects in circuit
It is each first detection circuit be respectively used to detect the working condition of the first relay in first heating circuit with corresponding
First detection signal is exported, the multiple second each second detection circuit detected in circuit is respectively used to detect described second
The working condition of the first relay in heating circuit exports the second detection signal with corresponding, wherein,
When the first detection signal and remaining the of any one the first detection circuit output in the multiple first detection circuit
When the first detection signal of one detection circuit output is inconsistent, described control unit judges that event occurs for first detection unit
Barrier, and control second relay to disconnect, so that first heating circuit and second heating circuit disconnect；
When the second detection signal and remaining the of any one the second detection circuit output in the multiple second detection circuit
When second detection signal of two detection circuit outputs is inconsistent, described control unit judges that event occurs for second detection unit
Barrier, and control second relay to disconnect, so that first heating circuit and second heating circuit disconnect.
4. the heating control apparatus of electric heater as claimed in claim 3, it is characterised in that described control unit is always according to institute
State the first detection signal of each first detection circuit output and the second detection signal of each second detection circuit output
Judge when the first relay in first heating circuit and first detection unit break down or described in judgement
The first relay and second detection unit in second heating circuit control second relay to break when breaking down
Open, so that first heating circuit and second heating circuit disconnect.
5. the heating control apparatus of the electric heater as any one of claim 1-4, it is characterised in that the control is single
Member includes：
Multiple first control relay circuits, each first Control electricity in the multiple first control relay circuit
Road correspondingly controls closure or the disconnection of each first relay；
Second control relay circuit, second control relay circuit are used for the closure or disconnected for controlling second relay
Open；
Single-chip microcomputer, the single-chip microcomputer include multiple first control ports, the second control port and multiple detection ports, and each first
Control port is corresponding with each first control relay circuit to be connected, second control port and second Control
Circuit is connected, and each detection port set is corresponding with each detection unit to be connected.
6. the heating control apparatus of electric heater as claimed in claim 3, it is characterised in that the first detection circuit and institute
It is identical to state the circuit structure of the second detection circuit, and the first detection circuit includes：
First resistor, one end of the first resistor are connected with the output switching terminal of first relay；
Diode, the negative electrode of the diode are connected with the other end of the first resistor, the anode of the diode with it is described
Zero line side is connected；
Photoelectrical coupler, the photoelectrical coupler include light emitting diode and phototriode, the anode of the light emitting diode
Be connected respectively with the other end of the first resistor and the negative electrode of the diode, the negative electrode of the light emitting diode respectively with institute
The anode for stating diode is connected with the zero line side；
Second resistance, one end of the second resistance are connected with default power supply, the other end of the second resistance with it is described photosensitive
The colelctor electrode of triode is connected；
3rd resistor, one end of the 3rd resistor respectively with the other end of the second resistance and the collection of the phototriode
Electrode is connected；
First electric capacity, one end of first electric capacity are connected with the other end of the 3rd resistor and have the first tie point, an institute
State output end of first tie point for the described first detection circuit, the other end and the phototriode of first electric capacity
Emitter stage is grounded after being connected.
7. the heating control apparatus of electric heater as claimed in claim 6, it is characterised in that when the described first detection circuit is defeated
When the first detection signal gone out is square-wave signal, the first relay in first heating circuit is in closure state.
A kind of 8. electric heater, it is characterised in that the heating control including the electric heater as any one of claim 1-7
Device processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622738.0U CN206831847U (en) | 2017-05-31 | 2017-05-31 | Electric heater and its heating control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622738.0U CN206831847U (en) | 2017-05-31 | 2017-05-31 | Electric heater and its heating control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206831847U true CN206831847U (en) | 2018-01-02 |
Family
ID=60773246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720622738.0U Withdrawn - After Issue CN206831847U (en) | 2017-05-31 | 2017-05-31 | Electric heater and its heating control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206831847U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981181A (en) * | 2017-05-31 | 2018-12-11 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its heating control apparatus and method |
| CN109683049A (en) * | 2018-12-19 | 2019-04-26 | 珠海蓉胜电子材料研究院有限公司 | A kind of pair of heater circuit carries out method, computer installation and the computer readable storage medium of fault detection |
| CN112054478A (en) * | 2020-07-30 | 2020-12-08 | 广东史麦斯电器有限公司 | Power abnormity protection device of electric water heater |
-
2017
- 2017-05-31 CN CN201720622738.0U patent/CN206831847U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981181A (en) * | 2017-05-31 | 2018-12-11 | 芜湖美的厨卫电器制造有限公司 | Electric heater and its heating control apparatus and method |
| CN108981181B (en) * | 2017-05-31 | 2023-10-31 | 芜湖美的厨卫电器制造有限公司 | Electric water heater and heating control device and method thereof |
| CN109683049A (en) * | 2018-12-19 | 2019-04-26 | 珠海蓉胜电子材料研究院有限公司 | A kind of pair of heater circuit carries out method, computer installation and the computer readable storage medium of fault detection |
| CN109683049B (en) * | 2018-12-19 | 2021-03-19 | 珠海蓉胜电子材料研究院有限公司 | Method for detecting faults of electric heating circuit, computer device and computer readable storage medium |
| CN112054478A (en) * | 2020-07-30 | 2020-12-08 | 广东史麦斯电器有限公司 | Power abnormity protection device of electric water heater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206831847U (en) | Electric heater and its heating control apparatus | |
| CN104700547B (en) | A kind of fire alarm prior-warning device for aircraft engine | |
| CN101615040A (en) | Temperature control system with contactor fault detect and control | |
| CN106771758A (en) | The positioner and method of failure in cabinet control loop | |
| CN110224491A (en) | Monitoring device, monitoring method and the monitoring system of Distributed power net automatic switch | |
| CN106093683B (en) | Heater broken wire detection system and wire break detection method | |
| CN102444989A (en) | Water system auxiliary electrical heating temperature control system and control method | |
| CN208507876U (en) | Battery detecting component and battery modules | |
| CN108279338A (en) | Household electrical appliance and solenoid actuated detection method and device for household electrical appliance | |
| CN108981181A (en) | Electric heater and its heating control apparatus and method | |
| CN111486599B (en) | Electric water heater electric leakage detection system and electric water heater | |
| CN207557400U (en) | A kind of low voltage failure circuit investigates instrument | |
| CN202734255U (en) | Electric heating function control device for heat-pump water heater | |
| CN205579863U (en) | Air conditioner heating control circuit | |
| CN209119814U (en) | Voltage security parallel device | |
| CN206944440U (en) | Electric heater and its failure detector | |
| CN1889317A (en) | Intelligent motor power source protection circuit breaker | |
| CN202382425U (en) | Auxiliary electric-heating temperature control system of water system | |
| CN206281921U (en) | The positioner of failure in cabinet control loop | |
| CN105911470B (en) | A kind of grid-connected instruction circuit of hydroenergy storage station and fault detection method | |
| CN206293379U (en) | A kind of intelligent miniature circuit breaker | |
| CN104993388B (en) | PT (Potential Transformer) paralleling device applied to transformer substation and voltage fault automatic identification method for PT (Potential Transformer) paralleling device | |
| CN104143811B (en) | A kind of direct current leakage protective circuit | |
| CN209707928U (en) | A kind of electric control system | |
| CN103574907A (en) | Electric heating function control device for heat-pump water heater and control method of electric heating function control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230331 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. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180102 Effective date of abandoning: 20231031 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180102 Effective date of abandoning: 20231031 |