CN2179399Y

CN2179399Y - Full automatic cylinder clothes drier

Info

Publication number: CN2179399Y
Application number: CN 94201822
Authority: CN
Inventors: 袁冠宣
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-29
Filing date: 1994-01-29
Publication date: 1994-10-12
Anticipated expiration: 2004-01-29

Abstract

The utility model relates to a full automatic cylinder clothes drying machine. The tail end of an air outlet is provided with a detector which is composed of a resistance type high molecular film humidity sensor. The humidity of air which is exhausted by a cylinder is detected by the detector. The air is automatically controlled to be heated and dried by a controller which is composed of a signal inspection rectification circuit, a comparing amplified circuit, a program switching circuit, a power switching circuit for a heater, a motor, a power switching circuit for a transformer, etc. Clothes are dried by cold wind softly. A shutdown power-down procedure realizes a full automatic control. The utility model has the advantages of safe utilization, power supply saving and convenient operation.

Description

Full automatic cylinder clothes drier

The utility model relates to a kind of full-automatic drum type washing machine, belongs to the technical field of washing machine.

Will be subjected to the housing space environment temperature through drying and could using or collect after the clothes washing, the restriction of humidity causes a lot of inconvenience.At present existing dryer is supplied in market; its shortcoming is that dryer relies on the predetermined drying time of timer, owing to environment temperature, humidity, clothes thickness; drying degree factor difference is difficult to determine suitable drying time; operation is very for convenient, and causes that clothes is not dried just shuts down, and perhaps clothes is dried; machine is still in running; waste power supply, also dangerous, should be improved from the structure of dryer.

The purpose of this utility model is that a kind of full-automatic drum-type dryer will be provided; it can overcome above-mentioned shortcoming; mainly in machine, add and adorn a moisture detector; can detect the degree of drying of drying clothes, by detection signal, by its control circuit; the work of control heater; stop, the soft dry and comfortable clothes of cold wind and cutting off the electricity supply is shut down etc.

The purpose of this utility model is achieved in that the end at air outlet slit is equipped with a moisture detector, at the casing upper left quarter one controller box is housed, and it has the sensor of resistor-type macromolecule membrane and has lead to draw in the detector, and sensor is equipped with catch net outward.Controller picks up circuit by the moisture signal inspection, rectification circuit, and its output connects the comparison amplifying circuit, is connected to the program switch circuit again, and control heater power switch circuit and electric electromechanics source switching circuit are formed.Alternating current 220V power supply one terminates to door switch (MK), through thermal protector RY ₁Be connected to motor M _TWith contact switch A _nSimultaneously again by thermal protector RY ₂, the primary coil of transformer (B) is received contact switch AN again ₁, thermal protector RY ₂An end be parallel to resistance R again ₁Green LED (LDE), the while is parallel resistance R again ₂And red light emitting diodes (LDE).

Signal pick up circuit is by sensor R _S, diode D ₉-D ₁₂The bridge rectifier of forming, resistance R ₂₀, capacitor C ₇, C ₈Form, input signal is by sensor R _SInspection picks out a mouthful air humidity and is converted to by the gas signal sensor R _SOne termination potentiometer W ₂Centre tap is through resistance R ₂₁Meet voltage-stabiliser tube DW ₂Negative electrode, another termination bridge rectifier (D ₉-D ₁₂) input, again by another input termination voltage-stabiliser tube DW ₃Negative electrode, the bridge rectifier negativing ending grounding.Anode and capacitor C ₇, C ₈Jiong type capacitance-resistance filter one end that resistance 20 is formed joins, and the direct current signal of process rectifying and wave-filtering is connected to resistance R by the other end ₁₈Output.

Relatively amplifying circuit is by IC ₁In operational amplifier and resistance R ₁₁, R ₁₂, R ₁₆, R ₁₇, R ₁₈Thermistor R _TTrimmer potentiometer W ₁, capacitor C ₃Form.Comparison signal by power supply through resistance R ₁₅Thermistor RT, potentiometer W ₁And resistance R ₁₇Carry out dividing potential drop, resistance R with being connected in series to ₁₇Non-ground connection termination capacitor C ₃Positive pole, and to take out dividing potential drop be comparison signal, passes through resistance R ₁₆Meet the positive input terminal-IC of comparator ₂3 pin input signals pass through R ₁₈Receive comparator negative input end IC ₂2 pin, operational amplifier output terminal meets diode D ₈Anode and positive feedback resistor R ₁₁, R ₁₁Another termination IC ₂3 pin, the heater power source on-off circuit is by relay J ₂, triode Q, diode D ₆Form relay J ₂Coil is received the colelctor electrode of dc source and triode Q respectively, diode D ₆Anode connects the colelctor electrode of triode Q, and negative electrode connects dc source, the grounded emitter of triode Q, and base stage is passed through resistance R ₆With operational amplifier IC ₂7 pin join relay J ₂Moving together contact one end directly connect the 220V power supply, the other end connects heater again.

Program switch circuit chip IC ₂In operational amplifier and diode D ₇, D ₈, triode Q, capacitor C ₃, C ₄And resistance R ₄, R ₅, R ₆, R ₈, R ₉, R ₁₀, R ₁₂, R ₁₃, R ₁₄And relay J ₂Form the positive input terminal of operational amplifier, IC ₂5 pin pass through resistance R ₁₂Connect the resistance R that is connected between power supply and the ground ₁₃, R ₁₄Tie point, take out comparison signal, transport and placing device negative input end IC ₂6 pin be connected to resistance R ₉, resistance R ₉The other end meet diode D again ₇, D ₈Negative electrode, pass through resistance R ₁₀Ground connection diode D ₈Anode meet IC again ₁1 pin, be signal input part.Diode D ₇Anode be connected in resistance R ₈, R ₆, capacitor C ₄Positive pole, resistance R ₆The other end connect the colelctor electrode of triode Q, resistance R ₈, capacitor C ₄Other end ground connection again, the output IC of transport and placing device ₂7 pin signal is passed through resistance R ₆Receive the base stage of triode Q, its grounded emitter, colelctor electrode connects load J ₂, the duty of control heater on-off circuit be connected resistance R ₄, resistance R ₄The other end connects capacitor C again ₃Anodal

IC

₁2,6 pin pass through resistance R ₄, capacitor C ₃, IC ₁The duty of the delay circuit control motor transformer frequency response on-off circuit of forming is passed through resistance R ₆, R ₇Feed back to input and carry out self-locking.

Motor, the power switch circuit of transformer (B) are 555 time-base integrated circuit piece IC ₁, relay J ₁, diode D ₆, capacitor C ₂, C ₃, resistance R ₄Form IC ₁2 pin, 6 pin join, and connect capacitor C ₃Positive pole and resistance R ₄, become a delay circuit, capacitor C ₃Minus earth, ic chip ₁4 pin, 8 pin all connect dc source, output 3 pin connect relay J ₁Coil one end and diode D ₆Negative electrode, relay J ₁The coil other end, diode D ₆Anode and ic chip ₁1 pin ground connection, ic chip ₁5 pin pass through capacitor C ₂Ground connection, relay J ₂Moving together contact and switch AN ₁After the parallel connection, an end directly connects the 220V power supply, another termination motor M ₇With the elementary winding of transformer B, as the power supply autocontrol switch of motor MT transformer B.

Above-mentioned control circuit all places in the controller box (12), and is contained in the place ahead in the machine, and the start button is arranged on the box, relay indicating light, and the button that manually shuts down, burner on light all is contained in outside, casing front upper place.

Fig. 1 is the schematic diagram of dryer.

Fig. 2 is the control box schematic diagram.

Fig. 3 is the moisture detector schematic diagram.

Fig. 4 is the controller electrical schematic diagram of dryer.

Fig. 5 is the controller principle block diagram of dryer.

Now in conjunction with the accompanying drawings the structure of full-automatic drum-type dryer is described in detail:

By Fig. 1, motor (2) is contained in the casing (1), by belt pulley (3), (4) the belt (not shown) drives drum (7) and air exhauster (6), air exhauster (6) supports fixedly by rear axle (5) and bearing (14), and a side of casing (1) is equipped with Qianmen (13), clothes to be dried door thus places in the drum (9), there is inlet (8) below, Qianmen (13), controller (12) is positioned at casing (1) upper left quarter, be positioned at cylinder (7) top, be connected with an air outlet slit (10) in air exhauster (6) top casing (1), a moisture detector (11) is equipped with in its end.

By Fig. 2, start button (16) and manual stop button (18) and relay indicating light (17) and burner on light (19) are housed on the control box (12).

By Fig. 3; Temperature Detector (11) has a shell (23) resistor-type macromolecule membrane temperature sensor (20) to be contained in the shell; and there is lead (22) outwards to draw; sensor (20) has catch net (21) to be protected, and humidity sensor is negative humidity coefficient resistive element, and relative temperature is 97% o'clock; resistance value is 2 kilo-ohms; relative humidity is 10% o'clock, and resistance value is 1 megaohm, and temperature coefficient is 0.1%RH/ ℃.

By Fig. 4, the program switch circuit is actually by a phase inverter, two delay circuits of electronic switching circuit (double as heater power source on-off circuit), and a latching circuit is formed.IC ₂Transport and placing device 2, resistance R ₉, R ₁₂, R ₁₃, R ₁₄Form phase inverter IC ₂Defeated next signal paraphase in the transport and placing device 1, triode Q, relay J ₂, resistance R ₆Form an electronic switching circuit, during triode Q conducting, by resistance R ₄, capacitor C ₃The delay circuit of forming turn-offs, and does not play time-lag action, also turn-offs by diode D simultaneously ₇Deng forming latching circuit, when triode Q ends, by resistance R ₄, capacitor C ₃Form delay circuit and latching circuit and just open resistance R ₄, capacitor C ₃Delay circuit and IC ₁Form a delayer, after heater quits work, carry out cold wind time-delay and time-delay and shut down.

By Fig. 5, alternating current 220V power supply process transformer B(31) step-down is for exchanging 7.5V voltage input AC mu balanced circuit (32), become and exchange 5V voltage input pickup RT(33), detecting the humidity AC signal is input to signal inspection and picks up rectification circuit (34), be converted to direct current signal and send into comparison amplifying circuit (35), by transformer B(31) output interchange be input to rectification circuit (38), rectification is a DC voltage, be input to comparison amplifying circuit (35), compare and enlarge and be input to program switch circuit (36) again, this DC voltage also is input to the work of program switch circuit (36) and heater power source on-off circuit (37) control heater simultaneously, and program switch circuit (36) also outputs to the work of motor transformer frequency response on-off circuit (39) control motor.

During use, clothes is placed in the drum by Qianmen (13), close to the doorstep, press button 15, make power connection relay indicating light (17) burner on light (19) shinny, heater (9), motor is started working, air exhauster, contact wheel all turns round, and air enters drum later from inlet (8) process heater (9) heating and form eddy current in drum, heat is sent to clothes, make that moisture content is evaporated on the clothes, by air exhauster humid air is extracted out through fabric filter (16) and gone, discharge by air outlet slit (10).

Air humidity is by the humidity sensor (R of outlet (10) ₆) induction; change electric signal into, be transmitted to the interior automatic control circuit of control box (12), the duty of control dryer by lead (22); pledge clothes when being dried to water content 5%; heater quits work automatically, and the indicator lamp of heating extinguishes, but drum; air exhauster still works on; utilize cold wind to make clothes after soft dry and comfortable 6-8 minute, with regard to autostop, power cutoff, indicator lamp extinguishes.

After clothing to be dried placed drum, close to the doorstep, door switch MK connects, and presses contact switch AN ₁, the 220V AC power is through thermal protector RY ₁, motor M _T, open and AN the contact ₁Form the loop, motor work.Another road is through thermal protector RY ₂, transformer (B) primary coil, contact switch AN ₁Form the loop, transformer secondary output has voltage output.One the tunnel through R ₂₂, R ₂₃, voltage-stabiliser tube DW ₂, DW ₃Behind the AC voltage-stabilizing, for moisture sensor R _SWork.Another road is through diode D ₁～D ₄Rectification, capacitor C ₂After the filtering, for control circuit provides working direct current.Because resistance R ₄Very big (2 megaohm), capacitor C ₃The current potential of anode can not suddenly change, and is electronegative potential.Make comparator positive input terminal 2 pin 6 pin of 555 time-base integrated circuits be low level, device output end 3 pin are high level, relay J ₁Adhesive, at this moment its moving together contact closure though press contact switch AN ₁Hand leave AN ₁Turn-off, but the electric current of motor and transformer still can form the loop by the contact of relay, keeps duty.Because under the normal condition, generally between nineties percent to three, 40, extreme dry weather also is approximately 20% to ambient humidity, and the resistance value of dew cell is about several kilo-ohms to hundred kilo-ohms, its ac signal is through diode D in addition ₉～D ₁₂Bridge rectifier, capacitor C ₇, C ₈And resistance R ₂₀After the filtering, pass through resistance R ₁₈Deliver to comparison amplifier IC ₂ Negative input end 2 pin of transport and placing device 1 in the double operational are with IC ₂The presetting potential of positive input terminal 3 pin in the transport and placing device 1 relatively.The current potential of cause 3 pin is by R ₁₅, R _T, W ₁With R ₁₇, R ₁₆Dividing potential drop determines, when debugging through adjustment potentiometer W ₁, 3 pin current potentials are preset to be equivalent to humidity be 15% 2 pin current potentials when following.The comparison input 2 pin current potentials of transport and placing device 1 are higher than 3 pin current potentials when therefore starting shooting, and negative electrode is 0.Diode D ₇Though anode through resistance R ₅, relay J ₂Join with positive source, but because capacitor C ₄The charging effect, suitably choose R ₅, C ₄Charge constant, make D ₇Moment in start does not have positive bias-voltage and ends, so IC when starting shooting ₂In the negative input end 6 pin current potentials of transport and placing device 2 be O, positive input terminal 5 pin have electric current by R ₁₃With R ₁₄Dividing potential drop is through R ₁₂Input, transport and placing device 2 outputs 7 pin output high potential is again through R ₆The base stage of input triode Q, the triode saturation conduction.Relay J ₂Adhesive, moving together contact is connected heater work with the ac circuit of heater RL.At this moment, because the triode saturation conduction, the current potential of transistor collector one end is close to 0, makes diode D ₇Continue to keep the cut-off state of no positive bias-voltage, make IC ₂In transport and placing device 2 and triode Q be locked on the previous status, simultaneously because R ₄The right-hand member current potential be close to and be O, capacitor C ₃Do not charge

IC

₁2,6 pin be locked in electronegative potential, high potential is kept in 3 pin output, motor, heater enter normal operating conditions.

At this moment, drum underwear spy is heated, and moisture is evaporated, and is extracted out by air exhauster, and the air humidity of discharging from outlet constantly increases, and the resistance of humistor R reduces, and delivers to IC behind the rectifying and wave-filtering ₂Electric current increase, the output of 1 pin low level is constant, circuit is kept former duty.Clothing constantly is dried in drum, and the air humidity of discharge is reduced to 15%RH when following (be equivalent in the drum clothing water content near 5% o'clock), R gradually _SInductive reactance increase, deliver to IC after making rectifying and wave-filtering ₂The voltage of 2 pin less than the voltage of 3 pin, IC ₂1 pin output high level, and pass through R ₁₁Positive feedback rises near IC 1 pin current potential rapidly ₂Supply voltage, D ₈Forward conduction is through R ₉Make IC ₂6 pin current potentials be higher than 5 pin current potentials, 7 pin output low levels, triode Q ends because of no base current.Colelctor electrode is high potential, and is very fast with C ₄Anode charges to R ₅With R ₈Partial pressure potential, D ₇The positively biased conducting.No matter IC at this moment ₂1 pin output be which kind of state, transport and placing device 2 and Q are all by self-locking, it is constant to keep state.In addition, because resistance R ₄With capacitor C ₃Time constant very big, in fact it and IC ₁Form a delayer, when Q ends, current collection very during high potential, start working, C by delay circuit ₃Positive terminal potential raises gradually, but before not reaching supply voltage 2/3, IC ₁3 pin output keep former high potential state, motor and transformer are kept former duty, but heating element quits work, so be cold wind by the air in the air exhauster suction drum.Temperature reduces gradually in the drum, makes its clothing softness dry and comfortable.Suitably choose R ₄, C ₃Time constant, make about 6～8 minutes after, capacitor C ₃The anode charging voltage reaches 2/3 supply voltage, at this moment IC ₁3 pin output low levels, relay J ₁Discharge, moving together contact disconnects, and motor and power of transformer are turned off, and dryer quits work automatically.

Resistance R in the circuit ₇, capacitor C ₆, voltage-stablizer DW ₁Be to be IC ₂Step-down, the voltage stabilizing element of suitable operating voltage are provided.R _TBe negative tempperature coefficient thermistor, the influence that brings in order to the compensate for ambient variations in temperature.D ₅, D ₆Be absorption diode.Capacitor C ₆Effect be to set up correct operating potential during for transport and placing device 1 start to make time bias, in addition, manual shut-down button AN ₂, be for making things convenient for hesitation setting.

Compared with prior art, Full automatic cylinder clothes drier has following advantages:

1. the degree of drying that utilizes moisture detector can in time detect clothes converts electric signal to, and work that can auto controlled heater can be controlled drying time.

2. can not waste power supply.

3. use upper safe and reliable, easy and simple to handle.

Claims

1, a kind of full-automatic drum-type dryer; mainly contain motor; air exhauster (9); drum (7); moisture detector (11) controller compositions such as (12); it is characterized in that the moisture detector (11) that a detection drum is discharged air humidity being housed at the end of air outlet slit (10); controller (12) is positioned at the upper left quarter of casing (1); the top of cylinder (7); detector (11) has the humidity sensor (20) that the resistor-type macromolecule membrane is housed in a shell (23) shell; and having lead (22) outwards to draw, sensor (20) has catch net (21).

2, dryer according to claim 1, it is characterized in that controller (12) picks up circuit by the moisture signal inspection, rectification circuit, its output connects the comparison amplifying circuit, be connected to the program switch circuit again, control heater power switch circuit and electric electromechanics source switching circuit are formed.

3,, it is characterized in that the inspection of described moisture signal is picked up, rectification circuit is by moisture sensor RS, diode D according to claim 1 and 2 described dryers ₉～D ₁₂, resistance R ₂₀, capacitor C ₇, C ₈Form the termination potentiometer W of sensor RS ₂Centre tap, through resistance R ₂₁Meet voltage-stabiliser tube DW ₂Negative electrode, another terminating diode D ₉～D ₁₂One input of bridge rectifier is through D ₉～D ₁₂Another input termination voltage-stabiliser tube DW ₃Negative electrode, form ac circuit, D ₉～D ₁Bridge 2 formula rectification circuit negativing ending grounding, anode and capacitor C ₇, resistance R ₂₀, capacitor C ₈Jiong type capacitance-resistance filter one end of forming connects, by the other end and resistance R ₁₈Join.

4, according to claim 1,2 described dryers is characterized in that described relatively amplifying circuit is by IC ₁In operational amplifier and resistance R ₁₁, R ₁₂, R ₁₆, R ₁₇, R ₁₈And thermistor R _TTrimmer potentiometer W ₁, capacitor C ₃Form, power supply is through R ₁₅, R _T, W ₁With R ₁7 are connected serially to the ground dividing potential drop, in resistance R ₁₇Non-ground connection termination capacitor C ₃Positive pole passes through resistance R ₁₆Meet comparator positive input terminal-IC ₂3 pin, resistance R ₁₈Meet comparator negative input end-IC ₂2 pin, transport and placing device output terminating diode D ₈Anode and positive feedback resistor R ₁₁, R ₁₁Another termination IC ₂3 pin.

5, according to claim 1,2 described dryers is characterized in that described program switch circuit is by IC ₂In another transport and placing device and diode D ₇, D ₈, triode Q, capacitor C ₃, C ₄And resistance R ₄, R ₅, R ₆, R ₈, R ₉, R ₁₀, R ₁₂, R ₁₃, R ₁₄With relay coil J ₂Form the positive input terminal-IC of transport and placing device ₂5 pin pass through resistance R ₁₂Connect the resistance R that is connected between power supply and the ground ₁₃, R ₁₄Tie point takes out comparison signal, the negative input end-IC of transport and placing device ₂6 pin connecting resistance R ₉, R ₉Another terminating diode D ₇, D ₈Negative electrode and pass through resistance R ₁₀Ground connection, diode D ₈Anode meet IC ₁1 pin, be signal input part, D ₇Anode connect resistance R ₈, R ₅And capacitor C ₄Positive pole, resistance R ₅The other end connect the colelctor electrode of triode Q.Resistance R ₈And capacitor C ₄Other end ground connection, the output-IC of transport and placing device ₂7 pin pass through resistance R ₆Connect the base stage of triode Q, the grounded emitter of triode Q, colelctor electrode connects load-relay J ₂With connecting resistance R ₄, R ₄The other end connects capacitor C ₃Anodal, IC ₁2,6 pin, by by resistance R ₄, capacitor C ₃, IC ₁The delay circuit of forming, and pass through resistance R ₆, R ₇Feed back to input.

6, according to claim 1,2 described dryers is characterized in that described heater power source on-off circuit is by relay J ₂, triode Q and diode D ₆Form J ₂Relay coil connect the colelctor electrode of dc source and triode Q, diode D respectively ₆Anode connects the colelctor electrode of triode Q, and negative electrode connects dc source, the grounded emitter of triode Q, and base stage is passed through resistance R ₆With operational amplifier IC ₂7 pin join relay J ₂Moving together contact one end directly connect the 220V power supply, another termination heater.

7, according to claim 1,2 described dryers is characterized in that described motor, transformer frequency response on-off circuit are by 555 time-base integrated circuit IC ₁, relay J ₁, diode D ₅, capacitor C ₂, C ₃And resistance R ₄Form IC ₁2,6 pin join, and connect capacitor C ₃Positive pole and R ₄, become a delay circuit, capacitor C ₃Minus earth, ic chip ₁4 pin, 8 pin connect dc source, output 3 pin connect relay J ₁Coil one end and diode D ₅Negative electrode, relay J ₁The coil other end, diode D ₅Anode and ic chip ₁1 pin ground connection, ic chip ₁5 pin pass through capacitor C ₂Ground connection, relay J ₁Moving together contact and switch AN ₁After the parallel connection, an end directly connects the 220V power supply, another termination motor and the elementary winding of transformer B.

8, dryer according to claim 1, it is characterized in that described control circuit places in the controller box (12), and being loaded on the place ahead in the machine, the start button (16) on its box, relay indicating light (17), manually shut down button (18), burner on light (19) all is located at the outside of casing (1) front upper place.