CN204965129U - Dryer automatic control circuit - Google Patents
Dryer automatic control circuit Download PDFInfo
- Publication number
- CN204965129U CN204965129U CN201520761313.9U CN201520761313U CN204965129U CN 204965129 U CN204965129 U CN 204965129U CN 201520761313 U CN201520761313 U CN 201520761313U CN 204965129 U CN204965129 U CN 204965129U
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- unit
- amplifier
- resistance
- output terminal
- dryer
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Abstract
The utility model provides a dryer automatic control circuit, this circuit is including starting unit, humidity detection and comparing element or logic unit and power switch unit, wherein start the start -up unit that the unit be the automatic re -setting that can delay, the output that starts unit and humidity detection and comparing element inserts respectively or two inputs of logic unit, or logic unit's output end control power switch unit, by the break -make of the on -off control dryer main circuit of power switch unit. Whether this circuit determines the clothes through the humidity that detects dryer top air outlet and dries completely, when humidity is less than the setting value, and the power supply of this circuit ability automatic disconnection dryer to reach self -timing and practice thrift the electric energy mesh.
Description
Technical field
The utility model relates to a kind of dryer automatic control circuit, belongs to electronic technology field.
Background technology
Dryer is a kind of electrical equipment being used for drying clothes, in the common use of southern family.The control circuit of the dryer on market is fairly simple, is generally only to provide a mechanical timer, by user's sets itself dryer working time, then automatically terminates.But this simple control mode of dryer but brings inconvenience to user, due to impact that is different by dryness level of clothes, the not equal factor of clothes quantity, time needed for each drying clothes is different, general user is difficult to accurately estimate needs the setting how long working time just to make clothing dry completely, if timing is too short, then clothes can not parch, if timing is long, causes again unnecessary waste of energy.
Utility model content
In order to solve the problem, the utility model provides a kind of dryer automatic control circuit, detects the humidity of dryer top outlet inlet with it, when humidity is lower than setting value, automatically disconnects the power supply of dryer, thus reaches self-timing and saves energy object.
The concrete technical scheme that the utility model is taked is as follows:
A kind of dryer automatic control circuit, it is characterized in that: this circuit comprises start unit, Humidity Detection and comparing unit or logical block and power switch unit, wherein said start unit be one can the automatically reset start unit of time delay, the output terminal of start unit and Humidity Detection and comparing unit accesses or two input ends of logical block respectively, or the output terminal of logical block controls power switch unit, by the break-make of the switch control rule dryer main circuit of power switch unit.
When the utility model uses, Non-follow control start unit, make it to export " 1 " logic state, and then make or logical block output " 1 " logic state, the switch of power switch unit closes, dryer main circuit is connected and is started to carry out drying work, and Humidity Detection and comparing unit also export " 1 " logic state when clothes is not dried, start unit is after certain time-delay, recover to export " 0 " logic state, " 1 " logic state is exported because Humidity Detection and comparing unit maintain, or logical block still exports " 1 " logic state, dryer still normally carries out drying work, pledge clothes after drying, Humidity Detection and comparing unit overturn and export " 0 " logic state, or logical block also overturns output " 0 " logic state, now the switch of power switch unit disconnects automatically, dryer quits work.
The beneficial effects of the utility model are: by the humidity detecting dryer top outlet inlet, this dryer automatic control circuit judges whether clothes dries completely, when humidity is lower than setting value, this circuit can disconnect the power supply of dryer automatically, thus reaches self-timing and saves energy object.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is physical circuit figure of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, this dryer automatic control circuit comprises start unit, Humidity Detection and comparing unit or logical block and power switch unit, wherein said start unit be one can the automatically reset start unit of time delay, the output terminal of start unit and Humidity Detection and comparing unit accesses or two input ends of logical block respectively, or the output terminal of logical block controls power switch unit, by the break-make of the switch control rule dryer main circuit of power switch unit.
Specific implementation circuit diagram of the present utility model as shown in Figure 2, the resistance R1 of described start unit and one end of electric capacity C1 access the negative input end of amplifier U1 jointly, another termination+5V power end of resistance R1, the other end ground connection of electric capacity C1, the two ends of electric capacity C1 are also parallel with starting switch K1; One end of resistance R2 and R3 accesses the positive input terminal of amplifier U1 jointly, another termination+5V power end of resistance R2, and the other end ground connection of resistance R3, the output terminal of amplifier U1 is the output terminal of start unit.
Described Humidity Detection and comparing unit adopt model to be that the humidity sensor U3 of HIH3610 builds, 1 pin of humidity sensor U3 connects+5V power end, one end of 2 pin connecting resistance R4,3 pin ground connection, the other end of resistance R4 and one end of electric capacity C2 access the positive input terminal of amplifier U2 jointly, the other end ground connection of electric capacity C2, the adjustable side of the negative input termination adjustable resistance RV1 of amplifier U2, the two stiff end one termination+5V power ends of adjustable resistance RV1, other end ground connection, the output terminal of amplifier U2 is the output terminal of Humidity Detection and comparing unit.
Described or logical block comprises two diodes D1, D2, and wherein the positive pole of diode D1 connects the output terminal of amplifier U1, and the positive pole of diode D1 connects the output terminal of amplifier U2, exports after the negative pole parallel connection of two diodes D1, D2, the output terminal of formation or logical block.
The negative pole parallel outputs of terminating diode D1, D2 of the resistance R5 of described power switch unit, the base stage of another termination NPN triode Q2, the grounded emitter of triode Q2, the collector of the positive pole of diode D3 and the common connecting triode Q2 in one end of relay R L1 coil, the negative pole of diode D3 is connected+5V power end jointly with the other end of relay R L1 coil, one group of normally opened contact access dryer main circuit of relay R L1.
Described amplifier U1 and U2 is provided by LM358 chip.
The course of work of this circuit is as follows:
1, press starting switch K1, electric capacity C1 discharges, and amplifier U1 exports high level, and drive triode Q2 conducting through diode D1, relay R L1 adhesive, dryer main circuit is connected, and starts working, upwards blows out hot blast from bottom.
2, after a few minutes, electric capacity C1 charging voltage exceedes amplifier U1 positive input terminal voltage, amplifier U1 output low level.If clothes is not also dried, humidity sensor U3 output voltage is also higher, makes the positive input terminal voltage of amplifier U2 exceed negative input end voltage, amplifier U2 exports high level, drive triode Q2 conducting through diode D2, relay R L1 continues adhesive, and dryer works on.
3, pledge clothes and dried, humidity sensor U3 output voltage reduces, and makes the positive input terminal voltage of amplifier U2 lower than negative input end voltage, amplifier U2 output low level, triode Q2 turns off, and relay R L1 discharges disconnection, dryer main circuit is cut off, and dryer quits work.
Claims (3)
1. a dryer automatic control circuit, it is characterized in that: this circuit comprises start unit, Humidity Detection and comparing unit or logical block and power switch unit, wherein said start unit be one can the automatically reset start unit of time delay, the output terminal of start unit and Humidity Detection and comparing unit accesses or two input ends of logical block respectively, or the output terminal of logical block controls power switch unit, by the break-make of the switch control rule dryer main circuit of power switch unit.
2. dryer automatic control circuit according to claim 1, it is characterized in that: the resistance R1 of described start unit and one end of electric capacity C1 access the negative input end of amplifier U1 jointly, another termination+5V power end of resistance R1, the other end ground connection of electric capacity C1, the two ends of electric capacity C1 are also parallel with starting switch K1; One end of resistance R2 and R3 accesses the positive input terminal of amplifier U1 jointly, another termination+5V power end of resistance R2, the other end ground connection of resistance R3, and the output terminal of amplifier U1 is the output terminal of start unit;
Described Humidity Detection and comparing unit adopt model to be that the humidity sensor U3 of HIH3610 builds, 1 pin of humidity sensor U3 connects+5V power end, one end of 2 pin connecting resistance R4,3 pin ground connection, the other end of resistance R4 and one end of electric capacity C2 access the positive input terminal of amplifier U2 jointly, the other end ground connection of electric capacity C2, the adjustable side of the negative input termination adjustable resistance RV1 of amplifier U2, the two stiff end one termination+5V power ends of adjustable resistance RV1, other end ground connection, the output terminal of amplifier U2 is the output terminal of Humidity Detection and comparing unit;
Described or logical block comprises two diodes D1, D2, and wherein the positive pole of diode D1 connects the output terminal of amplifier U1, and the positive pole of diode D1 connects the output terminal of amplifier U2, exports after the negative pole parallel connection of two diodes D1, D2, the output terminal of formation or logical block;
The negative pole parallel outputs of terminating diode D1, D2 of the resistance R5 of described power switch unit, the base stage of another termination NPN triode Q2, the grounded emitter of triode Q2, the collector of the positive pole of diode D3 and the common connecting triode Q2 in one end of relay R L1 coil, the negative pole of diode D3 is connected+5V power end jointly with the other end of relay R L1 coil, one group of normally opened contact access dryer main circuit of relay R L1.
3. dryer automatic control circuit according to claim 2, is characterized in that: described amplifier U1 and U2 is provided by LM358 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520761313.9U CN204965129U (en) | 2015-09-29 | 2015-09-29 | Dryer automatic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520761313.9U CN204965129U (en) | 2015-09-29 | 2015-09-29 | Dryer automatic control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204965129U true CN204965129U (en) | 2016-01-13 |
Family
ID=55060183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520761313.9U Withdrawn - After Issue CN204965129U (en) | 2015-09-29 | 2015-09-29 | Dryer automatic control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204965129U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182899A (en) * | 2015-09-29 | 2015-12-23 | 广西职业技术学院 | Automatic clothes dryer control circuit |
-
2015
- 2015-09-29 CN CN201520761313.9U patent/CN204965129U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182899A (en) * | 2015-09-29 | 2015-12-23 | 广西职业技术学院 | Automatic clothes dryer control circuit |
| CN105182899B (en) * | 2015-09-29 | 2017-11-14 | 广西职业技术学院 | Dryer automatic control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160113 Effective date of abandoning: 20171114 |