CN205945585U - Load ON -OFF control circuit and food processor - Google Patents
Load ON -OFF control circuit and food processor Download PDFInfo
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- CN205945585U CN205945585U CN201620878856.3U CN201620878856U CN205945585U CN 205945585 U CN205945585 U CN 205945585U CN 201620878856 U CN201620878856 U CN 201620878856U CN 205945585 U CN205945585 U CN 205945585U
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- blocking tetrode
- tetrode thyristor
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Abstract
The utility model discloses a load ON -OFF control circuit and food processor, wherein, load ON -OFF control circuit includes silicon controlled switch module, relay switch module, reaches the controller, it has silicon controlled switch module and relay switch module all to establish ties in motor, heating device's the power return circuit, wherein, when the motor stop work, the relay switch module in the controller driving motor power return circuit is turn -offed. The utility model discloses the motor mistake started during technical scheme can prevent food processor to food processor's security improves.
Description
Technical field
This utility model is related to household electrical appliance technical field, particularly to a kind of load switch control circuit and apply this bear
The food cooking machine of load switch control circuit.
Background technology
Food cooking machine is both provided with motor and heater at present, and wherein motor is used for driving stirring blade that food is carried out
Beat, also by heater, food is heated when beating to food.SCR control electricity is typically used in industry
Machine, Control heat-generating pipe, when carrying out heating function, relay frequent movement easily causes motor side silicon controlled to mislead
Logical, lead to motor error starting, thus causing potential safety hazard.
Utility model content
Main purpose of the present utility model is to provide a kind of load switch control circuit it is intended to prevent electricity in food cooking machine
Chance error starts, thus improving the safety of food cooking machine.
For achieving the above object, the utility model proposes a kind of load switch control circuit, it is applied to food cooking machine,
This food cooking machine includes motor and heater, and this load switch control circuit includes reverse-blocking tetrode thyristor module, relay leaves
Close module and controller；All it is in series with reverse-blocking tetrode thyristor module and relay switch mould in motor, the electric power loop of heater
Block；Wherein,
When motor quits work, the relay switch module in described controller motor electric power loop turns off.
Preferably, the reverse-blocking tetrode thyristor module when load quits work, in described controller motor electric power loop
It is first turned off, after postponing a period of time, relay switch module turns off.
Preferably, when load is started working, described controller drives relay switch module first to turn on, when postponing one section
Between after reverse-blocking tetrode thyristor module turn on again, described controller by control described reverse-blocking tetrode thyristor module the angle of flow adjust plus
Thermal or the watt level of motor.
Preferably, described load switch control circuit includes two described reverse-blocking tetrode thyristor modules and two described relays
Controller module；Wherein,
The input of one relay switch module is started to exchange fire line, and outfan is connected with the input of a reverse-blocking tetrode thyristor module,
The outfan of reverse-blocking tetrode thyristor module is connected with the first end of described motor, the second terminal connecting zero line of described motor；
The input of another relay switch module is started to exchange fire line, and outfan is connected with the first end of heater, described plus
Second end of thermal is connected with the input of another reverse-blocking tetrode thyristor module, the output terminal connecting zero line of reverse-blocking tetrode thyristor module；
Reverse-blocking tetrode thyristor module, the controlled end of relay switch module are connected with the control end of described controller respectively.
Preferably, described relay switch module includes first resistor, the first audion, relay and power supply；Wherein,
The first end of described first resistor is connected with the control end of described controller, the second end of described first resistor and institute
The base stage stating the first audion connects, and the colelctor electrode of described first audion is connected with described power supply, is sent the first audion
Emitter stage is connected with the coil sides input of described relay, the coil sides output head grounding of described relay；Described relay
Control the input that side input is described relay switch module, the control side outfan of described relay is described relay
The outfan of device switch module.
Preferably, described relay switch module also includes the first diode, the anode of described first diode with described
The coil sides outfan of relay connects, and the negative electrode of described first diode is connected with the coil sides input of described relay.
Preferably, described reverse-blocking tetrode thyristor module includes second resistance, 3rd resistor, the 4th resistance, controllable silicon and second
Audion；Wherein,
The first end of described second resistance is connected with the control end of described controller, the second end of described second resistance and institute
The base stage stating the second audion connects, the grounded emitter of described second audion, and the colelctor electrode of described second audion is through institute
State 3rd resistor to be connected with described silicon controlled controlled end；The first end of described 4th resistance and the base stage of described second audion
Connect, the second end of described 4th resistance is connected with the emitter stage of described second audion；Described silicon controlled outfan is institute
State the outfan of reverse-blocking tetrode thyristor module, described silicon controlled input is the input of described reverse-blocking tetrode thyristor module.
Preferably, described reverse-blocking tetrode thyristor module also includes the 5th resistance and the first electric capacity；The first of described first electric capacity
End is connected with described silicon controlled input, and the second end of described first electric capacity is defeated with described silicon controlled through described 5th resistance
Go out end to connect.
This utility model also proposes a kind of food cooking machine, and described food cooking machine includes load switch control as above
Circuit processed, this load switch control circuit includes reverse-blocking tetrode thyristor module, relay switch module and controller；Motor, heating
All it is in series with reverse-blocking tetrode thyristor module and relay switch module in the electric power loop of device；Wherein, when motor quits work,
Reverse-blocking tetrode thyristor module in controlled motor electric power loop and relay switch module simultaneously turn off described controller respectively.
Preferably, described food cooking machine is breaking cellular wall cooking machine, blender or soy bean milk making machine.
Technical solutions of the utility model are passed through to arrange reverse-blocking tetrode thyristor module, relay switch module and controller, are formed
A kind of load switch control circuit.The electric power loop of motor or heater is in series with simultaneously relay switch module and
Reverse-blocking tetrode thyristor module, because when relay disconnects, it internal disconnects in mechanical type, it is to avoid heater relay in heating
Device frequently switch on action false triggering controllable silicon, and lead to motor error starting.Technical solutions of the utility model improve food material
The safety of reason machine and stability.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the functional module of this utility model load switch control circuit one embodiment；
Fig. 2 is the structural representation of this utility model relay switching circuit one embodiment；
Fig. 3 is the structural representation of this utility model magnetic silicon controlled switch circuit one embodiment.
Drawing reference numeral explanation：
The realization of this utility model purpose, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of this utility model protection.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in this utility model embodiment
It is only used for explaining the relative position relation between each part, motion conditions etc. under a certain particular pose (as shown in drawings), such as
When really this particular pose changes, then directionality instruction also correspondingly changes therewith.
In addition, the description being related to " first ", " second " etc. in this utility model is only used for describing purpose, and it is not understood that
For indicating or implying its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can be expressed or implicitly include at least one this feature.In addition, the technical side between each embodiment
Case can be combined with each other, but must be capable of by those of ordinary skill in the art based on, when the combination of technical scheme
Will be understood that the combination of this technical scheme does not exist when appearance is conflicting or cannot realize, also do not require in this utility model
Protection domain within.
The utility model proposes a kind of load switch control circuit.
With reference to Fig. 1, in this utility model embodiment, this load switch control circuit include reverse-blocking tetrode thyristor module 100,
Relay switch module 200 and controller 300；All it is in series with reverse-blocking tetrode thyristor in motor M, the electric power loop of heater RL
Module 100 and relay switch module 200；Wherein,
Relay switch module 200 when motor M quits work, in described controller 300 motor M electric power loop
Turn off.
It should be noted that relay switch module 200 and reverse-blocking tetrode thyristor module 100 are connected, controlled motor M together；
In another loop, relay switch module 200 and reverse-blocking tetrode thyristor module 100 are connected, and control heat-generating pipe together；When heating dress
When putting RL work, the relay switch module 200 in heater RL electric power loop and reverse-blocking tetrode thyristor module 100 are both turned on,
And the relay switch module 200 in motor M loop disconnects, due to being to disconnect in mechanical type inside relay, so motor M
Reverse-blocking tetrode thyristor module 100 in loop will not have the hidden danger misleading.It can be readily appreciated that the power supply due to heater RL
Be in series with relay switch module 200 in loop, thus heater RL stop heating when, in heater RL loop can
Control transwitch module 100 there will not be the hidden danger misleading.
Technical solutions of the utility model are passed through to arrange reverse-blocking tetrode thyristor module 100, relay switch module 200 and are controlled
Device 300, defines a kind of load switch control circuit.The electric power loop of motor M or heater RL is in series with simultaneously and continues
Electric switch module 200 and reverse-blocking tetrode thyristor module 100, due to its internal disconnection in mechanical type when relay disconnects, it is to avoid plus
Thermal RL in heating relay frequently switch on action false triggering controllable silicon, and lead to motor M error starting.This utility model
Technical scheme improves safety and the stability of food cooking machine.
In the present embodiment, load as motor M and heater RL.
Further, the reverse-blocking tetrode thyristor mould when load quits work, in described controller motor M electric power loop
Block 100 is first turned off, and after postponing a period of time, this time period representative value is 100ms (millisecond) to 1s (second), relay switch mould
200 shutoffs.Thus further reducing the risk of motor M false triggering.
Further, when load is started working, described controller 300 drives relay switch module 200 first to turn on, and prolongs
After a period of time late, reverse-blocking tetrode thyristor module 100 turns on again, and equally this time period representative value is 100ms to 1s, described controller
300 adjust heater RL or the watt level of motor M by controlling the angle of flow of reverse-blocking tetrode thyristor module 100.
It should be noted that in controller 300 output high level, reverse-blocking tetrode thyristor module 100 and relay switch mould
Block 200 turns on, and then turns off in low level.Controller 300 is by adjusting the output to the pwm signal of reverse-blocking tetrode thyristor module 100
Dutycycle come to adjust input to heater RL or motor M power, that is, by the angle of flow of reverse-blocking tetrode thyristor module 100 Lai
Adjust power, it is to avoid the relay frequent movement in relay switch module 200, delay the service life of relay.
Specifically, described load switch control circuit includes continuing described in two described reverse-blocking tetrode thyristor modules 100 and two
Appliance controller 300 module；Wherein,
The input of one relay switch module 200 is started to exchange fire line L, the input of outfan and a reverse-blocking tetrode thyristor module 100
End connects, and the outfan of reverse-blocking tetrode thyristor module 100 is connected with the first end of described motor M, second termination zero of described motor M
Line N；
The input of another relay switch module 200 is started to exchange fire line L, and outfan is connected with the first end of heater RL,
Second end of described heater RL is connected with the input of another reverse-blocking tetrode thyristor module 100, reverse-blocking tetrode thyristor module 100
Output terminal connecting zero line N；
Reverse-blocking tetrode thyristor module 100, the controlled end control with same controller 300 respectively of relay switch module 200
End (not shown) connects.
Specifically, described relay switch module 200 includes first resistor R1, the first audion Q1, relay K1 and electricity
Source VCC；Wherein,
The first end of described first resistor R1 is connected with the control end of described controller 300, and the of described first resistor R1
Two ends are connected with the base stage of described first audion Q1, and the colelctor electrode of described first audion Q1 is connected with described power supply VCC, institute
The emitter stage sending the first audion Q1 is connected with the coil sides input of described relay K1, and the coil sides of described relay K1 are defeated
Go out end ground connection；Described relay K1 controls the input that side input is described relay switch module 200, described relay
K1 controls the outfan that side outfan is described relay switch module 200.
It should be noted that this relay K1 includes movable contact and stationary contact, after the coil sides of relay K1 are energized, move
Contact and stationary contact adhesive, relay K1 turns on；In the coil sides power-off of relay K1, movable contact is disconnected with stationary contact, continues
Electrical equipment K1 turns off.
In the present embodiment, the control end of controller 300 output high level, the first audion Q1 conducting is so that relay K1
Coil side loop earth-continuity, relay K1 coil sides electromagnetic attraction increases so that the movable contact of contact side and stationary contact adhesive,
Relay switch module 200 is turned on.
Further, described relay switch module 200 also includes the first diode D1, the sun of described first diode D1
Pole is connected with the coil sides outfan of described relay K1, the negative electrode of described first diode D1 and the coil of described relay K1
Side input connects.
It should be noted that the first diode D1 is fly-wheel diode.When relay K1 turns off, because relay K1
Store a large amount of electric energy in coil, coil two ends can induce very big voltage, for preventing coil from burning out, increase fly-wheel diode,
Electric energy with storage in release coil.
Specifically, described reverse-blocking tetrode thyristor module 100 includes second resistance R2,3rd resistor R3, the 4th resistance R4, controlled
Silicon SCR and the second audion Q2；Wherein,
The first end of described second resistance R2 is connected with the control end of described controller 300, and the of described second resistance R2
Two ends are connected with the base stage of described second audion Q2, the grounded emitter of described second audion Q2, described second audion
Colelctor electrode be connected with the controlled end of described controllable silicon SCR through described 3rd resistor R3；The first end of described 4th resistance R4 with
The base stage of described second audion Q2 connects, and second end of described 4th resistance R4 is connected with the emitter stage of described second audion Q2
Connect；The outfan of described controllable silicon SCR is the outfan of described controllable silicon SCR switch module 100, described controllable silicon SCR defeated
Enter the input for described controllable silicon SCR switch module 100 for the end.
Described controller 300 is realized adjusting input to electricity by the angle of flow that the first audion Q1 controls controllable silicon SCR
The size of machine M electric current.
Further, described controllable silicon SCR switch module 100 also includes the 5th resistance R5 and the first electric capacity C1；Described
The first end of one electric capacity C1 is connected with the input of described controllable silicon SCR, and second end of described first electric capacity C1 is through the described 5th
Resistance R5 is connected with the outfan of described controllable silicon SCR.5th resistance R5 and the first electric capacity C1 constitutes buffer circuit, prevents controlled
Mutation voltage between silicon SCRSCR anode and negative electrode punctures controllable silicon SCR.In the present embodiment, described controllable silicon SCR is two-way
Controllable silicon SCR.
This utility model also proposes a kind of food cooking machine, and this food cooking machine includes above-mentioned load switch control circuit,
Concrete structure reference above-described embodiment of this load switch control circuit, because this food cooking machine employs above-mentioned all enforcement
Whole technical schemes of example, therefore at least have all beneficial effects that the technical scheme of above-described embodiment is brought, here is not
Repeat one by one again.
Preferably, described food cooking machine is breaking cellular wall cooking machine, blender or soy bean milk making machine.
The foregoing is only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model,
Every equivalent structure change under inventive concept of the present utility model, made using this utility model description and accompanying drawing content
Change, or directly/be indirectly used in other related technical fields and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of load switch control circuit, is applied to food cooking machine, and this food cooking machine includes motor and heater, its
It is characterised by, including reverse-blocking tetrode thyristor module, relay switch module and controller；In motor, the electric power loop of heater
All it is in series with reverse-blocking tetrode thyristor module and relay switch module；Wherein,
When motor quits work, the relay switch module in described controller motor electric power loop turns off.
2. load switch control circuit as claimed in claim 1 is it is characterised in that when load quits work, described control
Reverse-blocking tetrode thyristor module in device motor electric power loop is first turned off, and after postponing a period of time, relay switch module turns off.
3. load switch control circuit as claimed in claim 1 is it is characterised in that when load is started working, described control
Device drives relay switch module first to turn on, and after postponing a period of time, reverse-blocking tetrode thyristor module turns on again, and described controller passes through
Control the angle of flow of the described reverse-blocking tetrode thyristor module watt level to adjust heater or motor.
4. the load switch control circuit as described in claims 1 to 3 any one is it is characterised in that described load switch control
Circuit processed includes two reverse-blocking tetrode thyristor modules and two relay switch modules；Wherein,
The input of one relay switch module is started to exchange fire line, and outfan is connected with the input of a reverse-blocking tetrode thyristor module, controlled
The outfan of transwitch module is connected with the first end of described motor, the second terminal connecting zero line of described motor；
The input of another relay switch module is started to exchange fire line, and outfan is connected with the first end of heater RL, described heating
Second end of device is connected with the input of this another reverse-blocking tetrode thyristor module, the output terminal connecting zero line of reverse-blocking tetrode thyristor module；
Reverse-blocking tetrode thyristor module, the controlled end of relay switch module are connected with the control end of described controller respectively.
5. load switch control circuit as claimed in claim 4 is it is characterised in that described relay switch module includes first
Resistance, the first audion, relay and power supply；Wherein,
The first end of described first resistor is connected with the control end of described controller, the second end of described first resistor and described the
The base stage of one audion connects, and the colelctor electrode of described first audion is connected with described power supply, is sent the transmitting of the first audion
Pole is connected with the coil sides input of described relay, the coil sides output head grounding of described relay；The control of described relay
Side processed input is the input of described relay switch module, and the control side outfan of described relay is opened for described relay
Close the outfan of module.
6. load switch control circuit as claimed in claim 5 is it is characterised in that described relay switch module also includes
One diode, the anode of described first diode is connected with the coil sides outfan of described relay, described first diode
Negative electrode is connected with the coil sides input of described relay.
7. load switch control circuit as claimed in claim 6 is it is characterised in that described reverse-blocking tetrode thyristor module includes second
Resistance, 3rd resistor, the 4th resistance, controllable silicon and the second audion；Wherein,
The first end of described second resistance is connected with the control end of described controller, the second end of described second resistance and described the
The base stage of two audions connects, the grounded emitter of described second audion, and the colelctor electrode of described second audion is through described the
Three resistance are connected with described silicon controlled controlled end；The first end of described 4th resistance is connected with the base stage of described second audion
Connect, the second end of described 4th resistance is connected with the emitter stage of described second audion；Described silicon controlled outfan is described
The outfan of reverse-blocking tetrode thyristor module, described silicon controlled input is the input of described reverse-blocking tetrode thyristor module.
8. load switch control circuit as claimed in claim 7 is it is characterised in that described reverse-blocking tetrode thyristor module also includes
Five resistance and the first electric capacity；The first end of described first electric capacity is connected with described silicon controlled input, described first electric capacity
Second end is connected with described silicon controlled outfan through described 5th resistance.
9. a kind of food cooking machine is it is characterised in that described food cooking machine is included as described in claim 1-8 any one
Load switch control circuit.
10. food cooking machine as claimed in claim 9 is it is characterised in that described food cooking machine is breaking cellular wall cooking machine, stirring
Machine or soy bean milk making machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878856.3U CN205945585U (en) | 2016-08-12 | 2016-08-12 | Load ON -OFF control circuit and food processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878856.3U CN205945585U (en) | 2016-08-12 | 2016-08-12 | Load ON -OFF control circuit and food processor |
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| Publication Number | Publication Date |
|---|---|
| CN205945585U true CN205945585U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620878856.3U Active CN205945585U (en) | 2016-08-12 | 2016-08-12 | Load ON -OFF control circuit and food processor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108415344A (en) * | 2018-05-11 | 2018-08-17 | 广东顺德昌盛实业有限公司 | A kind of multifunctional control circuit and food cooking machine |
-
2016
- 2016-08-12 CN CN201620878856.3U patent/CN205945585U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108415344A (en) * | 2018-05-11 | 2018-08-17 | 广东顺德昌盛实业有限公司 | A kind of multifunctional control circuit and food cooking machine |
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