CN205579689U - Smoke ventilator control circuit that works - Google Patents
Smoke ventilator control circuit that works Download PDFInfo
- Publication number
- CN205579689U CN205579689U CN201620228944.9U CN201620228944U CN205579689U CN 205579689 U CN205579689 U CN 205579689U CN 201620228944 U CN201620228944 U CN 201620228944U CN 205579689 U CN205579689 U CN 205579689U
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- Prior art keywords
- control circuit
- relay
- circuit
- coil
- blast velocity
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Abstract
The utility model discloses a smoke ventilator control circuit that works, smoke ventilator control circuit that works include smog detection circuitry, temperature detection circuitry, control chip, a wind speed control circuit and the 2nd wind speed control circuit, wherein control chip's signal input pin respectively with smog detection circuitry and temperature detection circuitry connect, the signal output pin respectively with a wind speed control circuit and the 2nd wind speed control circuit connection, a wind speed control circuit and the 2nd wind speed control circuit all with smoke ventilator's fan is connected, the control chip basis smog detection circuitry with control signal is exported respectively extremely to the information that temperature measurement circuit detected a wind speed control circuit and the 2nd wind speed control circuit are with control the fan is with the rotational speed operation of difference. The utility model provides the life -span that high smoke ventilator used.
Description
Technical field
This utility model relates to household electrical appliance technical field, particularly relates to a kind of smoke exhaust ventilator working control circuit.
Background technology
It is known that the control of wind speed is generally manually carried out gear switch control by user in existing smoke exhaust ventilator
System, if oil smoke concentration is less in air, and makes blower fan run up always, easily affects the use longevity of blower fan
Life.
Utility model content
Main purpose of the present utility model is to provide a kind of smoke exhaust ventilator working control circuit, it is intended to improves and takes out
The life-span that lampblack absorber uses.
To achieve these goals, this utility model provides a kind of smoke exhaust ventilator working control circuit, including cigarette
Mist testing circuit, temperature sensing circuit, control chip, the first blast velocity control circuit and the second blast velocity control electricity
Road；The signal input pin of wherein said control chip is electric with described Smoke Detection circuit and temperature detection respectively
Road connects, and signal output pin is connected with described first blast velocity control circuit and the second blast velocity control circuit respectively；
Described first blast velocity control circuit and the second blast velocity control circuit all blower fans with described smoke exhaust ventilator are connected；Institute
State control chip and export control respectively according to the information of described Smoke Detection circuit and the detection of described temperature sensing circuit
Signal processed is to described first blast velocity control circuit and the second blast velocity control circuit, to control described blower fan with difference
Rotation speed operation.
Preferably, described first blast velocity control circuit include the first audion, the first resistance, the first electric capacity and
First relay, wherein the first audion is PNP triode, its emitter stage and the positive output in preset voltage source
End connects, and base stage is connected with a signal output pin of described control chip by the first resistance, colelctor electrode and
Coil one end of described first relay connects；The coil other end of described first relay and described preset electricity
The negative output terminal of potential source connects, and the common port of described first relay is connected with civil power live wire, and normal-closed end is unsettled,
Normally opened end is connected with the low-speed running interface of described blower fan；Described first electric capacity is parallel to described first relay
Coil two ends.
Preferably, described first blast velocity control circuit also includes the first diode and the second electric capacity, wherein, institute
State the first diodes in parallel in the coil two ends of described first relay, and the negative electrode of described first diode with
The colelctor electrode of described first audion connects；One end of described second electric capacity is public with described first relay
End connects, and the other end is connected with the normally opened end of described first relay.
Preferably, described second blast velocity control circuit include the second audion, the second resistance, the 3rd electric capacity and
Second relay, wherein the second audion is PNP triode, and its emitter stage is with described preset voltage source just
Outfan connects, and base stage is connected with another signal output pin of described control chip by the second resistance, collection
Electrode is connected with coil one end of described second relay；The coil other end of described second relay is with described
The negative output terminal in preset voltage source connects, and the common port of described second relay is connected with civil power live wire, normally closed
Holding unsettled, normally opened end is connected with the interface that runs up of described blower fan；Described 3rd electric capacity is parallel to described
The coil two ends of two relays.
Preferably, described second blast velocity control circuit also includes the second diode and the 4th electric capacity, wherein, institute
State the second diodes in parallel in the coil two ends of described second relay, and the negative electrode of described second diode with
The colelctor electrode of described second audion connects；One end of described 4th electric capacity is public with described second relay
End connects, and the other end is connected with the normally opened end of described second relay.
Preferably, described smoke exhaust ventilator working control circuit also includes fuel gas testing circuit and warning circuit,
Wherein said fuel gas testing circuit and warning circuit are all connected with described control chip, for described control
Chip controls the duty of described warning circuit according to the information that described fuel gas testing circuit detects.
This utility model provide smoke exhaust ventilator working control circuit by temperature and smog are detected, from
And control the operating condition of blower fan, relative to conventional extraction hood by user's Non-follow control, can improve and make
With the safety of smoke exhaust ventilator.It is possible to prevent blower fan in the case of smokescope is relatively low persistently to transport at a high speed simultaneously
Turn, affect the life-span that smoke exhaust ventilator uses.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below by right
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments more of the present utility model, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain the attached of other according to the structure shown in these accompanying drawings
Figure.
Fig. 1 is the electrical block diagram of utility model smoke exhaust ventilator working control circuit one embodiment；
Fig. 2 is the refinement electricity of Smoke Detection circuit in utility model smoke exhaust ventilator working control circuit one embodiment
Line structure schematic diagram；
Fig. 3 is the first blast velocity control circuit and in utility model smoke exhaust ventilator working control circuit one embodiment
The refinement electrical block diagram of two blast velocity control circuit.
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings into one
Step explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to
Limit this utility model.
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technical side in this utility model embodiment
Case is clearly and completely described, it is clear that described embodiment is only a part of the present utility model
Embodiment rather than whole embodiments.Based on the embodiment in this utility model, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into this practicality new
The scope of type protection.
It is to be appreciated that directional instruction in this utility model embodiment (such as upper and lower, left and right,
It is forward and backward ...) it is only used for explaining relative between each parts under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if this particular pose changes, then directionality instruction is the most corresponding
Ground changes therewith.
It addition, the description relating to " first ", " second " etc. in this utility model is only used for describing purpose,
And it is not intended that indicate or imply its relative importance or the implicit number indicating indicated technical characteristic
Amount.Thus, define " first ", the feature of " second " can be expressed or implicitly include at least one
This feature.It addition, the technical scheme between each embodiment can be combined with each other, but must be with ability
Based on territory those of ordinary skill is capable of, maybe cannot realize when the combination appearance of technical scheme is conflicting
Time will be understood that the combination of this technical scheme does not exists, the most not this utility model require protection domain it
In.
This utility model provides a kind of smoke exhaust ventilator working control circuit, and with reference to Fig. 1, this utility model provides
Smoke exhaust ventilator working control circuit include Smoke Detection circuit 10, temperature sensing circuit 20, control chip 30,
First blast velocity control circuit 40 and the second blast velocity control circuit 50；The signal of wherein said control chip 30 is defeated
Entering pin to be connected with described Smoke Detection circuit 10 and temperature sensing circuit 20 respectively, signal output pin divides
It is not connected with described first blast velocity control circuit 40 and the second blast velocity control circuit 50；Described first wind speed control
Circuit 40 processed and the second blast velocity control circuit 50 are all connected with the blower fan M of described smoke exhaust ventilator；Described control
The information that chip 30 detects according to described Smoke Detection circuit 10 and temperature sensing circuit 20 exports control respectively
Signal is to described first blast velocity control circuit 40 and the second blast velocity control circuit 50, to control described blower fan with not
Same rotation speed operation.
It is understood that the smoke exhaust ventilator working control circuit in the offer of this utility model embodiment mainly should
It is used in smoke exhaust ventilator, may be used for the blower fan M rotating speed of smoke exhaust ventilator is controlled.Specifically, for
The rotating speed of blower fan M controls to use traditional by key control (manual mode), it is also possible to control smoke exhaust ventilator
Enter automatic control mode, according to concentration and the temperature information of detection of smog, auto-controlled fume exhaustor
The operating condition of blower fan M.
MQ-2 gas sensor can be used to carry out Smoke Detection, due to smog for Smoke Detection circuit 10
The weak output signal of sensor output, can use OPA2604AP as the preamplifying circuit of smoke signal.
OPA2604AP is differential two operational amplifiers of high-gain, has wider operating voltage range, source current
The least, can work under single dual power supply, and the concordance of two amplifier amplifiers is high.Physical circuit is such as
Shown in Fig. 2, U20A acts primarily as voltage follow effect, is amplified the output electric current of smog sensing.Pass through
The reference voltage Vref of potentiometer R24 regulation input U20B end of oppisite phase, the output signal warp of Smoke Sensor
Crossing the in-phase end input of amplifier U20B, resistance R28 constitutes negative-feedback circuit, introduces from U20B outfan
Feedback signal, to the inverting input of U20B, thus constitutes negative feedback difference scaling circuit, after amplification
Smoke signal is directly connected with the P11 foot of control chip 30, carries out the AD conversion of smoke signal, the most right
The rotating speed of blower fan M is controlled.It is understood that one or more cigarette can be used in actual applications
Mist testing circuit 10 carries out Smoke Detection.
Temperature sensor DS18B20 can be used for temperature sensing circuit 20, can design many in circuit
Individual temperature sensor, control chip 30 can obtain temperature sensor detection by the way of bus transfer
Temperature information, temperature sensor can detect the temperature of smoke exhaust ventilator air inlet.
It should be noted that, after control chip gets smog information and temperature information, can be to acquisition
Information is quantified, and smokescope is smog 1 grade more than 400ppm and less than or equal to 4000ppm, cigarette
Mistiness degree is smog 2 grades more than 4000ppm；Temperature is temperature 1 grade more than 42 DEG C and less than or equal to 70 DEG C,
Temperature is temperature 2 grades more than 70 DEG C.Blower fan M can be controlled with difference at different temperature and level of smoke
Rotation speed operation.Output of reporting to the police can also be carried out, it is achieved high temperature alarm further for high temperature.Below for not
Under same temperature grade and level of smoke, control chip is controlled exporting result and is described in detail:
It is understood that above-mentioned first blast velocity control circuit 40 and the circuit of the second blast velocity control circuit 50
Structure can be configured according to actual needs, as it is shown on figure 3, below will be to be embodied as carrying out specifically
Bright.
In the present embodiment, above-mentioned first blast velocity control circuit 40 include the first audion Q31, the first resistance R31,
First electric capacity C31 and the first relay K 31, wherein the first audion Q31 is PNP triode, and it is launched
Pole is connected with the positive output end of preset voltage source VCC, and base stage is by the first resistance R31 and described control chip
The one signal output pin (P34) of 30 connects, and colelctor electrode is connected with coil one end of described first relay K 31；
The coil other end of described first relay K 31 is connected with the negative output terminal of described preset voltage source VCC, institute
The common port stating the first relay K 31 is connected with civil power live wire L, and normal-closed end is unsettled, normally opened end and described wind
The low-speed running interface of machine M connects；Described first electric capacity C31 is parallel to the line of described first relay K 31
Circle two ends.
In the present embodiment, for the inverse electromotive force produced when absorbing the coil blackout of the first relay K 31,
Prevent inverse electromotive force from puncturing the first audion Q31, can be in parallel at the coil two ends of the first relay K 31
One IN4148 diode.Same, in order to absorb the first relay K 31 contact or disconnect moment product
Raw pulse, can be at the outfan of the first relay K 31 with ceramics high-voltage capacitance.Specifically, this enforcement
In example, above-mentioned first blast velocity control circuit 40 also includes the first diode D31 and the second electric capacity C32, wherein,
Described first diode D31 is parallel to the coil two ends of described first relay K 31, and described one or two pole
The negative electrode of pipe D31 is connected with the colelctor electrode of described first audion Q31；One end of described second electric capacity C32
It is connected with the common port of described first relay K 31, the other end and the normally opened end of described first relay K 31
Connect.
Above-mentioned second blast velocity control circuit 50 includes the second audion Q32, the second resistance R32, the 3rd electric capacity
C33 and the second relay K 32, wherein the second audion Q32 is PNP triode, and its emitter stage is with described
The positive output end of preset voltage source VCC connects, and base stage is by the second resistance R32 and described control chip 30
Another signal output pin (P33) connect, colelctor electrode is connected with coil one end of described second relay K 32；
The coil other end of described second relay K 32 is connected with the negative output terminal of described preset voltage source VCC, institute
The common port stating the second relay K 32 is connected with civil power live wire L, and normal-closed end is unsettled, normally opened end and described wind
The interface that runs up of machine M connects；Described 3rd electric capacity C33 is parallel to the line of described second relay K 32
Circle two ends.
In the present embodiment, for the inverse electromotive force produced when absorbing the coil blackout of the second relay K 32,
Prevent inverse electromotive force from puncturing the second audion Q32, can be in parallel at the coil two ends of the second relay K 32
One IN4148 diode.Same, in order to absorb the second relay K 32 contact or disconnect moment product
Raw pulse, can be at the outfan of the second relay K 32 with ceramics high-voltage capacitance.Specifically, this enforcement
In example, above-mentioned second blast velocity control circuit 50 also includes the second diode D32 and the 4th electric capacity C34, wherein,
Described second diode D32 is parallel to the coil two ends of described second relay K 32, and described two or two pole
The negative electrode of pipe D32 is connected with the colelctor electrode of described second audion Q32；One end of described 4th electric capacity C34
It is connected with the common port of described second relay K 32, the other end and the normally opened end of described second relay K 32
Connect.
Operationally, when signal output pin P34 output low level, the first audion Q31 saturation conduction,
The coil of the first relay K 31 obtains electric, and normally opened Guan Bi, civil power (AC220V power supply) will be by first
Relay K 31 is connected blower fan M and is run up interface (black), and blower fan M runs up；When signal output is drawn
When foot P34 exports high level, the first audion Q31 cut-off, the first relay K 31 coil losing electricity, normally opened
Point disconnects, blower fan M dead electricity, and blower fan stops.In like manner, when signal output pin P33 output low level,
Second audion Q32 saturation conduction, the coil of the second relay K 32 obtains electric, normally opened Guan Bi, civil power
(AC220V power supply) will be connected blower fan M by the second relay K 32 and run up interface (red), wind
Machine M runs up；When signal output pin P33 exports high level, the second audion Q32 cut-off, the
Two relay K 32 coil losing electricities, normally opened point disconnects, blower fan M dead electricity, and blower fan stops.
Further, based on above-described embodiment, in the present embodiment, above-mentioned smoke exhaust ventilator working control circuit
Also include fuel gas testing circuit 60 and warning circuit 70, wherein said fuel gas testing circuit 60 He
Warning circuit 70 is all connected with described control chip 30, for described control chip 30 according to described combustible gas
The information of health check-up slowdown monitoring circuit 60 detection controls the duty of described warning circuit 70.
Specifically, in the present embodiment, above-mentioned warning circuit 70 can include audible alarm and photoelectric alarm.
When there is gas leakage, can detect that current environment fuel gas is dense by fuel gas testing circuit 60
When degree reaches to a certain degree, directly control warning circuit 70 and carry out sound and light alarm.It is understood that for
High temperature alarm may be used without this warning circuit 70 and reports to the police.
This utility model provide smoke exhaust ventilator working control circuit by temperature and smog are detected, from
And control the operating condition of blower fan, relative to conventional extraction hood by user's Non-follow control, can improve and make
With the safety of smoke exhaust ventilator.It is possible to prevent blower fan in the case of smokescope is relatively low persistently to transport at a high speed simultaneously
Turn, affect the life-span that smoke exhaust ventilator uses.
These are only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model,
Every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion, or directly
Connect or be indirectly used in other relevant technical fields, be the most in like manner included in patent protection model of the present utility model
In enclosing.
Claims (6)
1. a smoke exhaust ventilator working control circuit, it is characterised in that include that Smoke Detection circuit, temperature are examined
Slowdown monitoring circuit, control chip, the first blast velocity control circuit and the second blast velocity control circuit；Wherein said control core
The signal input pin of sheet is connected with described Smoke Detection circuit and temperature sensing circuit respectively, and signal output is drawn
Foot is connected with described first blast velocity control circuit and the second blast velocity control circuit respectively；Described first blast velocity control
Circuit and the second blast velocity control circuit all blower fans with described smoke exhaust ventilator are connected；Described control chip is according to institute
The information stating Smoke Detection circuit and the detection of described temperature sensing circuit outputs control signals to described first respectively
Blast velocity control circuit and the second blast velocity control circuit, to control described blower fan with different rotation speed operation.
2. smoke exhaust ventilator working control circuit as claimed in claim 1, it is characterised in that described first wind
Speed control circuit includes the first audion, the first resistance, the first electric capacity and the first relay, wherein the 1st
Pole pipe is PNP triode, and its emitter stage is connected with the positive output end in preset voltage source, and base stage is by the first electricity
Resistance is connected with a signal output pin of described control chip, colelctor electrode and the coil one of described first relay
End connects；The coil other end of described first relay is connected with the negative output terminal in described preset voltage source, institute
The common port stating the first relay is connected with civil power live wire, and normal-closed end is unsettled, and normally opened end is low with described blower fan
Speed operating interface connects；Described first electric capacity is parallel to the coil two ends of described first relay.
3. smoke exhaust ventilator working control circuit as claimed in claim 2, it is characterised in that described first wind
Speed control circuit also includes the first diode and the second electric capacity, and wherein, described first diodes in parallel is in described
The coil two ends of the first relay, and the colelctor electrode of the negative electrode of described first diode and described first audion
Connect；One end of described second electric capacity is connected with the common port of described first relay, the other end and described the
The normally opened end of one relay connects.
4. as claimed in claim 2 or claim 3 smoke exhaust ventilator working control circuit, it is characterised in that described the
Two blast velocity control circuit include the second audion, the second resistance, the 3rd electric capacity and the second relay, Qi Zhong
Two audions are PNP triode, and its emitter stage is connected with the positive output end in described preset voltage source, and base stage is led to
Cross the second resistance to be connected with another signal output pin of described control chip, colelctor electrode and described second relay
Coil one end of device connects；The coil other end of described second relay and the negative output in described preset voltage source
End connects, and the common port of described second relay is connected with civil power live wire, and normal-closed end is unsettled, normally opened end and institute
The interface that runs up stating blower fan connects；Described 3rd electric capacity is parallel to the coil two ends of described second relay.
5. smoke exhaust ventilator working control circuit as claimed in claim 4, it is characterised in that described second wind
Speed control circuit also includes the second diode and the 4th electric capacity, and wherein, described second diodes in parallel is in described
The coil two ends of the second relay, and the colelctor electrode of the negative electrode of described second diode and described second audion
Connect；One end of described 4th electric capacity is connected with the common port of described second relay, the other end and described the
The normally opened end of two relays connects.
6. smoke exhaust ventilator working control circuit as claimed in claim 1, it is characterised in that described smoke pumping
Machine working control circuit also includes fuel gas testing circuit and warning circuit, and wherein said fuel gas detects
Circuit and warning circuit are all connected with described control chip, for described control chip according to described fuel gas
The information of testing circuit detection controls the duty of described warning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620228944.9U CN205579689U (en) | 2016-03-23 | 2016-03-23 | Smoke ventilator control circuit that works |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620228944.9U CN205579689U (en) | 2016-03-23 | 2016-03-23 | Smoke ventilator control circuit that works |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205579689U true CN205579689U (en) | 2016-09-14 |
Family
ID=56865940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620228944.9U Expired - Fee Related CN205579689U (en) | 2016-03-23 | 2016-03-23 | Smoke ventilator control circuit that works |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205579689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402971A (en) * | 2016-11-01 | 2017-02-15 | 合肥齐赢网络技术有限公司 | Control system of domestic intelligent range hood |
-
2016
- 2016-03-23 CN CN201620228944.9U patent/CN205579689U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402971A (en) * | 2016-11-01 | 2017-02-15 | 合肥齐赢网络技术有限公司 | Control system of domestic intelligent range hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20170323 |