CN105846394A - Protection and control device for household electrical appliance and household electrical appliance - Google Patents
Protection and control device for household electrical appliance and household electrical appliance Download PDFInfo
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- CN105846394A CN105846394A CN201610290396.7A CN201610290396A CN105846394A CN 105846394 A CN105846394 A CN 105846394A CN 201610290396 A CN201610290396 A CN 201610290396A CN 105846394 A CN105846394 A CN 105846394A
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- 235000021251 pulses Nutrition 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 235000021168 barbecue Nutrition 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/027—Details with automatic disconnection after a predetermined time
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- Emergency Protection Circuit Devices (AREA)
- Relay Circuits (AREA)
Abstract
The invention discloses a protection and control device for a household electrical appliance. The protection and control device comprises a control part and a first load loop. The control part comprises a processing chip, a driving part and a protection and control circuit. The processing chip is connected with the protection and control circuit and the driving part. The processing chip is used for outputting a protection and control signal and a driving signal. The protection and control signal has a first state and a second state. The driving part is used for driving the first load loop to work according to the driving signal. The protection and control circuit is used for controlling connection of the first load loop according to the protection and control signal of the first state and also used for controlling disconnection of the first load loop according to the protection and control signal of the second state. According to the protection and control device of the household electrical appliance, the protection and control circuit can control the load loop to be disconnected when the state of the protection and control signal is the second state and the load is enabled to stop working so that safety of the load can be guaranteed and the resulting safety risk can be solved. The invention also discloses the household electrical appliance.
Description
Technical field
The present invention relates in household appliance technical field, more specifically, the protection relating to a kind of household electrical appliance controls device and family
Electrical appliance.
Background technology
Along with household electrical appliance are multifarious deep, its safeguard protection performance obtains more concern, particularly fire safety.
In the design of household electrical appliance, the fire protection requirement such as electric clearance and creep age distance is required to consider, but, in correlation technique
In, also not main control chip for household electrical appliance occur unknown out of control time, protect accordingly, to prevent from bearing
Hold continuous uncontrolled work, cause the generation of danger.
Summary of the invention
Embodiment of the present invention is intended at least to solve one of technical problem present in prior art.To this end, the present invention implements
Mode needs the protection providing a kind of household electrical appliance to control device and household electrical appliance.
The protection of a kind of household electrical appliance controls device, including: control portion and the first load circuit.This control portion includes processing
Chip, drive division and protection control circuit, this process chip connects this protection control circuit and this drive division, this process core
Sheet is for output protection control signal and drives signal, and this protection control signal has the first state and the second state.This drives
Dynamic portion is for driving this first load circuit to work according to this driving signal, and this protection control circuit is for according to the first state
This protection control signal control this first load circuit and open, and for according to this protection control signal control of the second state
Make this first load circuit to disconnect.
The protection of the household electrical appliance of embodiment of the present invention controls in device, when the state of protection control signal is the second state
Time, protection control circuit can control load circuit and disconnect, make load quit work, thus ensure that the safety of load,
Solve the security risk therefore caused.
In some embodiments, this protection control signal of the first state is pulse signal, this protection control of the second state
Signal processed is that level maintains an equal level signal.
In some embodiments, this protection control circuit includes the first electric capacity, the second electric capacity and switch member, this second electricity
Hold and be connected between this first electric capacity and this switch member.This process chip is for utilizing this protection control signal of the first state
Being charged this second electric capacity by this first electric capacity, when the voltage of this second electric capacity is more than or equal to setting voltage, this is opened
Close part and control the unlatching of this first load circuit.This process chip for utilize this protection control signal of the second state make this
One electric capacity and the electric discharge of this second electric capacity, when the voltage of this second electric capacity is less than this setting voltage, this switch member control this
One load circuit disconnects.
In some embodiments, this first load circuit includes load-relay, and this protection control signal has the 3rd shape
State.After this protection control signal the first setting time that reason chip exports the first state in this place, this protection control circuit is used
Open in controlling this first load circuit, and after this first load circuit opened for the second setting time, this process chip is used
In output for opening this driving signal of this load-relay, this drive division is for according to being used for opening this load-relay
This driving signal control this load-relay open.This process chip is used for disconnecting being somebody's turn to do of this load-relay for output
Drive signal, and in output after this driving signal the 3rd setting time disconnecting this load-relay, export the 3rd shape
This protection control signal of state, this drive division controls this for basis for this driving signal disconnecting this load-relay and bears
Load relay disconnects.In this place after this protection control signal the 4th setting time of the reason chip output third state, this protection
Control circuit is used for controlling this first load circuit and disconnects.
In some embodiments, the 4th setting time was more than this first setting time, and this first setting time is more than being somebody's turn to do
Second sets time and the 3rd setting time.
In some embodiments, the control point that this protection control circuit and this first load circuit are formed is ground end or electricity
Source.
In some embodiments, the protection of these household electrical appliance controls device and includes the second load circuit, and this drive division connects
This second load circuit and this process chip, this drive division is for driving this second load circuit work according to this driving signal
Make.
In some embodiments, this protection control circuit includes the 3rd load circuit, and this protection control signal has the 3rd
State.After this protection control signal the first setting time that reason chip exports the first state in this place, this protection control circuit
Open for controlling the 3rd load circuit.This process chip is for exporting this protection control signal of the third state, at this
After processing this protection control signal the second setting time of the chip output third state, this protection control circuit is used for controlling this
3rd load circuit disconnects.
A kind of household electrical appliance, the protection including the household electrical appliance described in as above any embodiment controls device.
In above-mentioned household electrical appliance, when the state protecting control signal is the second state, protection control circuit can control to bear
Load loop disconnects, and makes load quit work, thus ensure that the safety of load, solves the security risk therefore caused.
The additional aspect of embodiment of the present invention and advantage will part be given in the following description, and part will be retouched from following
Become obvious in stating, or recognized by the practice of embodiment of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of embodiment of the present invention and advantage are from combining the accompanying drawings below description to embodiment
In will be apparent from easy to understand, wherein:
Fig. 1 is the module diagram of the protection control device of the household electrical appliance of embodiment of the present invention；
Fig. 2 is the circuit diagram of the protection control device of the household electrical appliance of embodiment of the present invention；
Fig. 3 is the control sequential chart of the protection control device of the household electrical appliance of embodiment of the present invention；
Fig. 4 is the circuit diagram of the protection control circuit of the protection control device of the household electrical appliance of embodiment of the present invention；
Fig. 5 is another module diagram of the protection control device of the household electrical appliance of embodiment of the present invention；
Fig. 6 is another circuit signal of the protection control circuit of the protection control device of the household electrical appliance of embodiment of the present invention
Figure；
Fig. 7 is another circuit diagram of the protection control device of the household electrical appliance of embodiment of the present invention；
Fig. 8 is that the circuit controlling the load control chip that device is formed of protecting of the household electrical appliance of embodiment of the present invention shows
It is intended to；
Fig. 9 is the application case schematic diagram of the protection control device of the household electrical appliance of embodiment of the present invention；
Figure 10 is the Another Application case schematic diagram of the protection control device of the household electrical appliance of embodiment of the present invention.
Detailed description of the invention
Embodiments of the present invention are described below in detail, and the example of described embodiment is shown in the drawings, the most extremely
Same or similar label represents same or similar element or has the element of same or like function eventually.Below by ginseng
The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " first ", " second " be only used for describe purpose, and
It is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, limit
Have " first ", the feature of " second " can express or implicitly include one or more described features.At this
In the description of invention, " multiple " are meant that two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " install ",
" be connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or
It is integrally connected；Can be to be mechanically connected, it is also possible to be to electrically connect maybe can be in communication with each other；Can be to be joined directly together, also
Can be indirectly connected to by intermediary, can be connection or the interaction relationship of two elements of two element internals.
For the ordinary skill in the art, above-mentioned term specifically containing in the present invention can be understood as the case may be
Justice.
Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.For letter
Change disclosure of the invention, hereinafter to the parts of specific examples be set for describing.Certainly, they are the most merely illustrative,
And it is not intended to limit the present invention.Additionally, the present invention can repeat reference numerals and/or reference in different examples
Letter, this repetition is for purposes of simplicity and clarity, itself does not indicate discussed various embodiment and/or sets
Relation between Ding.Additionally, the various specific technique that the invention provides and the example of material, but this area is common
Technical staff is it can be appreciated that the application of other techniques and/or the use of other materials.
Please join Fig. 1, the protection of a kind of household electrical appliance that embodiment of the present invention provides controls device 100, including control portion
102 and first load circuit 104.
Control portion 102 includes processing chip 106, drive division 108 and protection control circuit 110, processes chip 106 even
Connect protection control circuit 110 and drive division 108, process chip 106 and for output protection control signal and drive signal,
Protection control signal has the first state and the second state.
Drive division 108 is for according to driving signal to drive the first load circuit 104 to work, and protection control circuit 110 is used for
Protection control signal according to the first state controls the first load circuit 104 and opens, and for the protection according to the second state
Control signal controls the first load circuit 104 and disconnects.
Therefore, the protection of above-mentioned household electrical appliance controls in device 100, when the state protecting control signal is the second state,
Protection control circuit 110 can control load circuit 104 and disconnect, and makes load quit work, thus ensure that the peace of load
Entirely, the security risk therefore caused is solved.
Specifically, the protection of household electrical appliance controls device 100 and can be used in household electrical appliance, such as, relate to the household electrical appliance of heating,
Such as micro-wave oven, baking box, electric pressure cooking saucepan, electric cooker, soy bean milk making machine etc..When household electrical appliance are micro-wave oven, process chip 106 also
Connect and have fire door testing circuit 112 and buzzer drive circuit 114.Micro-wave oven includes multiple load-relays of heating, example
If respectively microwave (MICRO) relay 116 (i.e. RLY1 in Fig. 2), barbecue (GRILL) relay 118 is (i.e. in Fig. 2
RLY2), steam relay 120 and hot blast (CONV or CONVECTION) relay 122 (i.e. RLY3 in Fig. 2).
Process chip 106 e.g. central processing unit (CPU).Drive division 108 can be added triode driving and constitute by I/O.Such as,
In the example of the present invention, drive division 108 can be realized by driving chip.Please join Fig. 2, driving chip ULN2003 and include input
Pin IN1, IN2, IN3, IN4, IN5, IN6 and IN7, and output pin OUT1, OUT2, OUT3, OUT4, OUT5,
OUT6 and OUT7.Input pin processes the driving signal of chip 106 for receiving, and it is negative that output pin is used for exporting control correspondence
Carry the control signal of relay.
Incorporated by reference to Fig. 2, protection control circuit 110 includes protecting input SAFE, protection input SAFE connection to process chip
106, for receiving the protection control signal processing chip 106 output.
In some embodiments, the first load circuit 104 includes load-relay.In the example of the present invention, load relay
Device includes the load-relay of above-mentioned heating, i.e. microwave relay 116, barbecue relay 118, steam relay 120 and
Hot blast relay 122.
At some embodiment, the protection of household electrical appliance controls device 100 and includes the second load circuit 124, drive division 108
Connecting the second load circuit 124 and process chip 106, drive division 108 is for according to driving signal to drive second to load back
Road 124 works.
Specifically, in the example of the present invention, the second load circuit 124 includes stove lamp relay 126 (i.e. RLY5 in Fig. 2)
And cooling fan relay 128 (i.e. RLY6 in Fig. 2).Stove lamp relay 126 and cooling fan relay 128 connect drive division 108.
It is to say, stove lamp relay 126 and cooling fan relay 128 are operated alone by drive division 108, it is not protected control circuit
110 control.
In the example of the present invention, one end of stove lamp relay 126 and one end of cooling fan relay 128 can connect driving core respectively
Output pin OUT1 and OUT6 of sheet ULN2003.The other end of stove lamp relay 126 and the other end of cooling fan relay 128
Power end (+12V) can be connected.
In some embodiments, the protection control signal of the first state is pulse signal, and the protection of the second state controls letter
Number maintain an equal level signal for level.
Therefore, when processing chip 106 and normally working, exportable pulse signal, protection control circuit 110 is according to pulse
Signal controls the first load circuit 104 and opens.When processing chip 106 and being out of control, exportable level maintains an equal level signal, protection
Control circuit 110 controls the first load circuit 104 disconnect according to the level signal that maintains an equal level.The level signal that maintains an equal level can be low electricity
Flat maintain an equal level signal or high level maintains an equal level signal.
In some embodiments, protection control circuit 110 includes the first electric capacity C15, the second electric capacity E3 and switch member,
Second electric capacity E3 is connected between the first electric capacity C15 and switch member.
Process chip 106 for utilizing the protection control signal of the first state to pass through the first electric capacity C15 to the second electric capacity E3
Charging, when the voltage of the second electric capacity E3 is more than or equal to setting voltage, switch member controls the first load circuit 104 and opens
Open；
Process chip 106 for utilizing the protection control signal of the second state to make the first electric capacity C15 and the second electric capacity E3 put
Electricity, when the voltage of the second electric capacity E3 is less than setting voltage, switch member controls the first load circuit 104 and disconnects.
Specifically, in the example of the present invention, switch member includes triode Q12 and triode Q14.When processing chip 106
When exporting the protection control signal of the first state, if the protection control signal of the first state is pulse signal, defeated by protection
First electric capacity C15 is constantly charged and discharged by the pulse signal entering to hold SAFE, and then is charged the second electric capacity E3
And electric discharge.
When the second electric capacity E3 is in electric discharge, when the voltage drop of the second electric capacity E3 as little as sets threshold value, the protection of the first state controls
Signal is required to be the second electric capacity E3 charging, and the voltage of the second electric capacity E3 so can be allowed to be higher than the conducting voltage of triode Q12, from
And driving triode Q14 to turn on so that the electricity of power end (+12V) can access load-relay (such as the relay in Fig. 2
RLY1, RLY2 and RLY3) one end, make the first load circuit 104 open.Setting threshold value can be by the B pole of triode Q12
And the voltage at two ends, E pole and be connected on B pole resistance resistance determine.
When processing in the case of chip 106 occurs that deadlock etc. is out of control, the protection control signal processing chip 106 output becomes second
State, as protection control signal is always maintained at high level or low level.Such first electric capacity C15 and the second electric capacity E3 is always
Being in discharge condition, when the voltage at the second electric capacity E3 two ends is less than the conducting voltage of triode Q12, then triode Q12 is certainly
Dynamic cut-off, and then make triode Q14 end, i.e. control the first load circuit 104 and disconnect, thus ensure that payload security, solve
Determine the security risk therefore caused.
In some embodiments, protection control signal has the third state.The first state is exported processing chip 106
After protection control signal the first setting time, protection control circuit 110 is opened for controlling the first load circuit 104, and
After first load circuit 104 opened for the second setting time, process chip 106 for output for opening load-relay
Driving signal, drive division 108 is for opening according to the driving signal control load-relay being used for opening load-relay.
Process chip 106 and be used for the driving signal of disconnecting consumers relay for output, and continue for disconnecting consumers in output
After driving signal the 3rd setting time of electrical equipment, the protection control signal of the output third state, drive division 108 is for basis
Driving signal for disconnecting consumers relay controls load-relay and disconnects.
After processing protection control signal the 4th setting time that chip 106 exports the third state, protect control circuit 110
Disconnect for controlling the first load circuit 104.
Specifically, process chip 106 to may utilize the control sequential chart shown in Fig. 3 and control accordingly.The protection control of the third state
The control signal that control the first load circuit 104 that signal processed is sent when normally can work by processing chip 106 disconnects.
In the example of the present invention, export the protection control signal of the first state through the first setting time when processing chip 106
After T1, when the triode Q14 of protection control circuit 110 turns on, the switching signal of the first load circuit 104 sets high, and controls
First load circuit 104 is opened, namely power end (+12V) receives load-relay (as microwave relay RLY1, barbecue continue
Electrical equipment RLY2 and hot blast relay R LY3) one end.
The size of the first setting time T1 is relevant with the value of resistance R47 with the first electric capacity C15, resistance R49, the second electric capacity E3.
In this example, the capacitance of the first electric capacity C15 is 1uF, and the resistance of resistance R49 is 2K, and the capacitance of the second electric capacity E3 is
47uF, the resistance of resistance R47 is 10K, by test it is recognised that first sets time T1 as about 80ms.Actual choosing
The when of taking, it is desirable to have certain surplus, in order to ensure after first sets time T1, opening of the first load circuit 104
OFF signal must set high.
After now postponing the second setting time T2, process chip 106 and export the driving signal for opening load-relay again,
As opened microwave relay RLY1, barbecue relay R LY2 and/or the driving signal of hot blast relay R LY3.Owing to microwave continues
Electrical equipment RLY1 to ensure to open at the crest or trough of line voltage, and therefore the driving signal of load-relay must be the
After one load circuit 104 is opened, it is then turned on.First sets the time more than the second setting time, the second setting time T2 mono-
As at more than 10ms.
When load-relay to be closed, the most first close the driving of load-relay, now process chip 106 output and be used for breaking
Open the driving signal of load-relay, as disconnected microwave relay RLY1, barbecue relay R LY2 and/or hot blast relay R LY3
Driving signal.Drive division 108 controls load-relay according to the driving signal for disconnecting consumers relay and disconnects.
After postponing the 3rd setting time T3, process chip 106 and export the protection control signal of the third state, i.e. turn off guarantor
Protect the driving signal of input SAFE so that the driving of load-relay is all controlled.First setting time set more than the 3rd
Fixing time, the 3rd sets time T3 typically at more than 10ms.
Export the protection control signal of the third state at process chip 106, such as, process chip 106 and protection control signal is placed in
During low level state, after the 4th sets time T4, the switching signal of the first load circuit 104 is automatically switched off, and makes load
Relay disconnects with power end (+12V), even if the first load circuit 104 disconnects.Reason is to control electricity in the protection shown in Fig. 2
Lu Zhong, when protecting control signal to be placed in low level state, the first electric capacity C15 and the second electric capacity E3 is constantly in discharge condition,
When the voltage at the second electric capacity E3 two ends is less than the conducting voltage of triode Q12, then triode Q12 cut-off, and then make three poles
Pipe Q14 ends.
The size of the 4th setting time T4 is relevant with the value of resistance R47 with the first electric capacity C15, resistance R49, the second electric capacity E3.
In this example, the capacitance of the second electric capacity C15 is 1uF, and the resistance of resistance R49 is 2K, and the capacitance of the second electric capacity E3 is
47uF, the resistance of resistance R47 is 10K, by test it is recognised that the 4th sets the time more than the first setting time.
In some embodiments, the control point that protection control circuit 110 and the first load circuit 104 are formed is ground end
Or power end.
Specifically, in the illustrated example shown in fig. 2, the control that protection control circuit 110 and the first load circuit 104 are formed
System point is power end (+12V).
In another example shown in the present invention, please join Fig. 4, protection control circuit 210 controls with the protection shown in Fig. 2
Circuit 110 main difference is, protection control circuit 210 triode Q5 replaces two diode D1 and D2.Protecting
Protecting in control circuit 210, the control point that the first load circuit 104 is formed with protection control circuit 210 can be selected in A point (
End), it is also possible to selecting at B point (power end+12V), shown in dotted line wire is that triode drives, now, can be by control point
It is selected in B point, i.e. power end.It is pointed out that the protection input of the protection control circuit 210 in Fig. 4 is designated as LAMP.
In some embodiments, please join Fig. 5, protection control circuit 310 includes the 3rd load circuit 304, protection control
Signal processed has the third state.
After processing protection control signal the first setting time that chip 106 exports the first state, protect control circuit 310
Open for controlling the 3rd load circuit 304.Process chip 106 and be used for exporting the protection control signal of the third state,
After processing protection control signal the second setting time that chip 106 exports the third state, protection control circuit 310 is used for controlling
Make the 3rd load circuit 304 to disconnect.
Specifically, in embodiments of the present invention, please join Fig. 6, the 3rd load circuit 304 includes load-relay RLY4,
In this example, load-relay RLY4 is stove lamp relay, say, that the protected control circuit of stove lamp relay 310
Control.Relative to the protection control circuit 210 shown in Fig. 4, protection control circuit 310 adds the 3rd load on A point
Loop 304, can be used for controlling load-relay RLY4, such as stove lamp relay.Therefore, the drive division of embodiment of the present invention
The triode of a driving stove lamp relay can be saved in 308.In some embodiment above, the second load circuit 324 is also
The relay circuit of correspondence can be dispensed.It is pointed out that the protection input of the protection control circuit in Fig. 6 is designated as LAMP.
Control the 3rd load circuit 304 that the protection control signal of the third state is sent when normally can work by processing chip 106
The control signal disconnected.
When processing the protection control signal that chip 106 exports the first state, the protection control signal of the first state is constantly given
Electric capacity C12 and E3 charging and discharging, some embodiment above-mentioned with the present invention is similar, exports processing chip 106
After protection control signal the first setting time of the first state, the voltage of the electric capacity E3 conducting voltage higher than triode Q6,
The triode Q6 making protection control circuit 310 turns on, and then control load regulation three load circuit 304 is opened, and i.e. opens
Load-relay RLY4.
When process chip 106 exports the protection control signal of the third state, during such as the most low level protection control signal,
Electric capacity C12 and E3 discharges, and after the second setting time, the voltage of electric capacity E3 is less than the electric conduction of triode Q6
Pressure, makes the triode Q6 of protection control circuit 310 end, and then control the 3rd load circuit 304 disconnects, and i.e. disconnects
Load-relay RLY4.It is pointed out that the of the second setting time of present embodiment and some embodiment above-mentioned
Four setting times are similar.
When applying protection control circuit 310 as shown in Figure 6, please join shown in Fig. 7, the protection of household electrical appliance controls dress
The Main Differences putting the protection control device 100 with the household electrical appliance shown in Fig. 2 is fire door testing circuit and protection control electricity
Road.Owing to fire door testing circuit is made without the conversion of+12V and+5V, therefore save a triode.Protect simultaneously
Control circuit 310 have employed the mode of Fig. 7.
Further, in order to integrate buzzer driving, fire door detection and protection control circuit, can be by embodiment party of the present invention
The protection control circuit of formula and interlock circuit make load control chip.In the example depicted in fig. 8, load control chip
Inside is divided into: main load drives, non-master load drives, reserved load drives, buzzer drives, fire door detection and protecting
Protect control circuit.
Power supply (12V) drive part, all increases backward dioded between triode C pole and power end (12V).
Triode can be modified according to actual application scenarios, and the biggest electric current can use Darlington transistor.Pay special attention to
It is: protection control circuit needs big electric current with the triode of fire door detection part, therefore uses Darlington transistor.Various piece
And see figure explanation with the relation of pin.Load control chip can meet the load exploitation of major part household electrical appliances.
When processing chip output protection control signal, time e.g. for opening the protection control signal of load circuit, this
Time protection control signal can be pulse signal, pulse signal constantly to electric capacity C12 and protection control circuit electric capacity charging
And electric discharge, some embodiment above-mentioned with the present invention is similar, finally makes the triode ON of protection control circuit, and then
Control corresponding load circuit to open.
Two application cases of load control chip presented below.
Case one: as it is shown in figure 9, the BUZZER pin at load control chip MX2018 connects buzzer, C3 pin connects stove lamp and continues
Electrical equipment, C1 pin wind-receiving fan relay, C5 pin connects microwave relay, and C6 pin connects barbecue relay.CAP2 pin meets electric capacity E3,
CAP1 pin meets electric capacity C12 and resistance R47, and DOOR pin output DOOR signal, external filter capacitor C10, Y pin connects fire door
Socket CN1.
Case 2: as shown in Figure 10, when the resource loading control chip MX2018 is inadequate, as increased hot blast (CONV)
Relay R LY4, then have only to i.e. protect at C3 pin the output pin of control circuit, external triode Q9 to be controlled.
Meanwhile, mouth is being driven to increase a triode Q4 and diode D5 access fire door socket CN1.
Embodiment of the present invention provides a kind of household electrical appliance.Household electrical appliance include as above household electric described in any embodiment
The protection of device controls device.Therefore, in above-mentioned household electrical appliance, when the state protecting control signal is the second state, protect
Protect control circuit and can control load circuit disconnection, make load quit work, thus ensure that the safety of load, solve
Therefore the security risk caused.
Specifically, household electrical appliance can be the household electrical appliance such as micro-wave oven, baking box, electric pressure cooking saucepan, electric cooker, soy bean milk making machine.As
This, can make user more safely use conventional household electrical appliance.
In the description of this specification, reference term " embodiment ", " some embodiment ", " schematically
Embodiment ", " example ", the description of " concrete example " or " some examples " etc. mean to combine described embodiment party
Specific features, structure, material or feature that formula or example describe are contained at least one embodiment of the present invention or show
In example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.
And, the specific features of description, structure, material or feature can be in any one or more embodiments or examples
In combine in an appropriate manner.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or imply relatively heavy
The property wanted or the implicit quantity indicating indicated technical characteristic.Thus, " first ", the feature of " second " are defined
Can express or implicitly include at least one described feature.In describing the invention, " multiple " be meant that to
Few two, such as two, three etc., unless otherwise expressly limited specifically.
In flow chart or at this, any process described otherwise above or method description are construed as, and represent and include one
The module of code, fragment or the portion of the executable instruction of the individual or more step for realizing specific logical function or process
Divide, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not be by shown or discussion
Sequentially, including according to involved function by basic mode simultaneously or in the opposite order, performing function, this should be by
Embodiments of the present invention person of ordinary skill in the field understood.
Represent in flow charts or the logic described otherwise above at this and/or step, for example, it is possible to be considered as to use
In the sequencing list of the executable instruction realizing logic function, may be embodied in any computer-readable medium, with
For instruction execution system, device or equipment (system such as computer based system, including processor or other can be from
Instruction execution system, device or equipment instruction fetch also perform the system of instruction) use, or combine these instruction execution systems,
Device or equipment and use.For the purpose of this specification, " computer-readable medium " can be any can comprise, store,
Communication, propagation or transmission procedure for instruction execution system, device or equipment or combine these instruction execution systems, device
Or equipment and the device that uses.The more specifically example (non-exhaustive list) of computer-readable medium includes following: tool
There are the electrical connection section (mobile terminal) of one or more wiring, portable computer diskette box (magnetic device), arbitrary access
Memory (RAM), read-only storage (ROM), erasable edit read-only storage (EPROM or flash memory),
Fiber device, and portable optic disk read-only storage (CDROM).It addition, computer-readable medium can even is that
Paper or other suitable media of described program can be printed thereon, because can be such as by paper or other media are carried out
Optical scanner, then carries out editing, interpreting or be processed to electronically obtain institute with other suitable methods if desired
State program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize by hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, multiple steps or method can with storage in memory and by suitable instruction execution system perform soft
Part or firmware realize.Such as, if realized with hardware, with the most the same, available this area is public
Any one or their combination in the following technology known realize: have and patrol for data-signal is realized logic function
Collect the discrete logic of gate circuit, there is the special IC of suitable combinational logic gate circuit, programmable gate array
(PGA), field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that and realize all or part of step that above-mentioned embodiment method is carried
Suddenly the program that can be by completes to instruct relevant hardware, and described program can be stored in a kind of computer-readable storage
In medium, described program upon execution, including one or a combination set of the step of method embodiment.
Additionally, each functional unit in each embodiment of the present invention can be integrated in a processing module, it is also possible to
It is that unit is individually physically present, it is also possible to two or more unit are integrated in a module.Above-mentioned integrated
Module both can realize to use the form of hardware, it would however also be possible to employ the form of software function module realizes.Described integrated mould
If block is using the form realization of software function module and as independent production marketing or use, it is also possible to be stored in one
In computer read/write memory medium.Storage medium mentioned above can be read-only storage, disk or CD etc..
Although above it has been shown and described that embodiments of the present invention, it is to be understood that above-mentioned embodiment is to show
Example, it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be right
Above-mentioned embodiment is changed, revises, replaces and modification.
Claims (9)
1. the protection of household electrical appliance controls device, it is characterised in that including:
Control portion, this control portion includes processing chip, drive division and protection control circuit, and this process chip connects this protection
Control circuit and this drive division, this process chip is for output protection control signal and drives signal, this protection control signal
There is the first state and the second state；
First load circuit, this drive division is used for driving this first load circuit to work according to this driving signal, this protection control
Circuit processed is opened for controlling this first load circuit according to this protection control signal of the first state, and for according to second
This protection control signal of state controls this first load circuit and disconnects.
2. the protection of household electrical appliance as claimed in claim 1 controls device, it is characterised in that this guarantor of the first state
Protecting control signal is pulse signal, and this protection control signal of the second state is that level maintains an equal level signal.
3. the protection of household electrical appliance as claimed in claim 1 controls device, it is characterised in that this protection control circuit
Including the first electric capacity, the second electric capacity and switch member, this second electric capacity is connected between this first electric capacity and this switch member；
This process chip is for utilizing this protection control signal of the first state to be filled this second electric capacity by this first electric capacity
Electricity, when the voltage of this second electric capacity is more than or equal to setting voltage, this switch member controls this first load circuit and opens；
This process chip is used for utilizing this protection control signal of the second state to make this first electric capacity and the electric discharge of this second electric capacity,
When the voltage of this second electric capacity is less than this setting voltage, this switch member controls this first load circuit and disconnects.
4. the protection of household electrical appliance as claimed in claim 1 controls device, it is characterised in that this first load circuit
Including load-relay, this protection control signal has the third state；
After this protection control signal the first setting time that reason chip exports the first state in this place, this protection control circuit is used
Open in controlling this first load circuit, and after this first load circuit opened for the second setting time, this process chip is used
In output for opening this driving signal of this load-relay, this drive division is for according to being used for opening this load-relay
This driving signal control this load-relay open；
This process chip is used for disconnecting this driving signal of this load-relay for output, and it is negative to be used for disconnecting this in output
After carrying this driving signal the 3rd setting time of relay, this protection control signal of the output third state, this drive division is used
In controlling the disconnection of this load-relay according to this driving signal being used for disconnecting this load-relay；
In this place after this protection control signal the 4th setting time of the reason chip output third state, this protection control circuit is used
Disconnect in controlling this first load circuit.
5. the protection of household electrical appliance as claimed in claim 4 controls device, it is characterised in that the 4th sets the time
More than this first setting time, this first setting time sets the time more than this second setting time and the 3rd.
6. the protection of household electrical appliance as claimed in claim 1 controls device, it is characterised in that this protection control circuit
The control point formed with this first load circuit be hold or power end.
7. the protection of household electrical appliance as claimed in claim 1 controls device, it is characterised in that the guarantor of these household electrical appliance
Protecting control device and include the second load circuit, this drive division connects this second load circuit and this process chip, this drive division
For driving this second load circuit to work according to this driving signal.
8. the protection of household electrical appliance as claimed in claim 1 controls device, it is characterised in that this protection control circuit
Including the 3rd load circuit, this protection control signal has the third state；
After this protection control signal the first setting time that reason chip exports the first state in this place, this protection control circuit is used
Open in controlling the 3rd load circuit；
This process chip is for exporting this protection control signal of the third state, and reason chip exports being somebody's turn to do of the third state in this place
After protection control signal the second setting time, this protection control circuit is used for controlling the 3rd load circuit and disconnects.
9. household electrical appliance, it is characterised in that include the guarantor of household electrical appliance as described in any one of claim 1-8
Protect control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610290396.7A CN105846394B (en) | 2016-05-04 | 2016-05-04 | The protection control device and household electrical appliance of household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610290396.7A CN105846394B (en) | 2016-05-04 | 2016-05-04 | The protection control device and household electrical appliance of household electrical appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105846394A true CN105846394A (en) | 2016-08-10 |
| CN105846394B CN105846394B (en) | 2019-07-26 |
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ID=56590810
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610290396.7A Active CN105846394B (en) | 2016-05-04 | 2016-05-04 | The protection control device and household electrical appliance of household electrical appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094801A (en) * | 2021-11-12 | 2022-02-25 | 广东美的厨房电器制造有限公司 | Control circuits, household appliances |
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| CN205595760U (en) * | 2016-05-04 | 2016-09-21 | 广东美的厨房电器制造有限公司 | Domestic appliance's protection controlling means and domestic appliance |
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| JP2011223841A (en) * | 2010-04-14 | 2011-11-04 | Sharp Corp | Power supply system and network system |
| CN104703347A (en) * | 2015-02-15 | 2015-06-10 | 广州市珠江灯光科技有限公司 | LED boosting constant-current source and LED lamp |
| CN204928082U (en) * | 2015-09-13 | 2015-12-30 | 杭州欧润科技有限公司 | Domestic appliance intelligent protection device |
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| CN114094801A (en) * | 2021-11-12 | 2022-02-25 | 广东美的厨房电器制造有限公司 | Control circuits, household appliances |
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| Publication number | Publication date |
|---|---|
| CN105846394B (en) | 2019-07-26 |
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