CN1510377A - Dryness measuring device of drier - Google Patents
Dryness measuring device of drier Download PDFInfo
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- CN1510377A CN1510377A CNA021581355A CN02158135A CN1510377A CN 1510377 A CN1510377 A CN 1510377A CN A021581355 A CNA021581355 A CN A021581355A CN 02158135 A CN02158135 A CN 02158135A CN 1510377 A CN1510377 A CN 1510377A
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- drum
- drier
- microprocessor
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Abstract
A dryness detector for drier is structurally composed of a rotary drum for drying the washed object, an electrode sensor installed in said drum for contacting the washed object and serially connected with resistor and capacitor for providing charge voltage, and discharge circuit for said charge voltage and consisting of said resistor and capacitor and transistor. Its advantage is high correctness.
Description
Technical field
The present invention is the dryness detector of relevant drier, and particularly relevant mensuration is being carried out the dryness detector of drier of aridity of the washings of dry action.
Background technology
Fig. 1 and Fig. 2 are the structural representations of general drier.As shown in the figure, form the outward appearance of drier by shell 53, the front end that front panel 41 is connected and installed in shell 53 forms the front of drier.After can being equipped with the washings input revolvably, the inside of shell 53 finishes dry drum 44.Drum 44 by being trapped among machine operation band 54 rotation of its outside.
The exhaust outlet 43 of inside that is equivalent to front panel 41 is to the inside opening of drum 44, and exhaust outlet 43 carries out exhaust with the air of drum 44 inside to drum 44 outsides, in its inlet the cotton wave filter 36 that mixes in airborne foreign matter in order to remove is installed.One side of exhaust outlet 43 is equipped with drying measures the electrode sensor 38 of the aridity of washing thing of drum 44 inside when carrying out.Electrode sensor 38 is surveyed degree of drying according to the voltage difference that is added on the electrode two ends when touching washings, then the signal that detects is exported with voltage signal.
The inboard of plate 3 in front, what link to each other with exhaust outlet 43 is formed with exhaust passage 45, and what be connected with exhaust passage 45 is equipped with air blast assembling body 30.The temperature sensor 32 of surveying the air themperature of discharging is installed in the exhaust passage 45.
In air blast assembling body 30, be connected with the exhaust passage 34 that the air that exhaust passage 45 is discharged is discharged to the outside.Comprise circulation and suction drum 44 inner airs in the air blast assembling body 30 and the heat of heater 42 described later is introduced drum 44, the moisture of clothing is discharged to the blower motor 31 of exhaust outlet 43.Blower motor 31 uses variable speed type.
In the inside of shell 53, the part that is equivalent to drum 44 bottoms is equipped with the feed path 46 to drum 44 internal feed air.Feed path 46 passes through the rear of drum 44 to drum 44 internal feed air.One side of feed path 46 is equipped with heater 42.One side of feed path 46 also is equipped with the temperature sensor 48 of the temperature of surveying the air that is drawn into drum 44.In inside one side of the shell 53 of drier mainboard 52 with the action of electric control drier is installed.
To the control structure of the drier that is contained in mainboard 52 be described below.
Fig. 3 is the control structure schematic diagram of drier.As shown in the figure, in this structure, under the control of microprocessor 100, finish dry action.Be subjected to the drive division of electric control and each sensor of the detection signal of telecommunication in drier inside the signal that detects is obtained signal to above-mentioned microprocessor 100 outputs or from microprocessor 100.
At first, supply with signal according to user's selection input power supply, dry actuating signal, the signal of input drying condition transmits to microprocessor 100 by press key input section 103 then.The detectable signal of surveying the electrode sensor 38 of current drying degree also will transmit to microprocessor 100 by signal transformation component 106.Detection will be sent to microprocessor 100 behind the figure signal to the detectable signal of the temperature sensor 48 of the temperature of the hot blast of drum 44 internal feeds in temperature sensor 48 signal transformation components 109.The temperature of the hot blast of discharging at drum 44 will be detected and will be sent to microprocessor 100 at signal transformation component 112 figure signals at temperature sensor 32.Carry out the detectable signal of middle door sense part 115 grades of opening and also will be sent to microprocessor 100 in order to prevent dry action.
In order to make drum 44 rotation produce under the control of microprocessor 100, the finishing the work or stop of driving forces in order to the drum motor driving part 118 that drives the drum motor with for the blower motor drive division 121 that makes blower motor 31 rotations produce driving forces in order to blower motor 31, thus the rotation of control drum 44 and blower motor 31.In order to drive the heater-driven portion of the heater of supplying with thermal source, 124 also drive under the control of microprocessor 100.
Below, will the action so that the drier in the technology to be arranged with above structure be described.
At first, putting into to drum 44 inside needs dry washings, the user back of shutting the door to select dry actuating signal in press key input section 103, and then this signal will be input in the microprocessor 100 in the mainboard 52.Microprocessor 100 will drive signal to drum motor driving part 118 output rollers, and then Rolling motor will rotate, thereby make drum 44 rotations.Microprocessor 100 will drive air blast assembling body 30 action back blower motors 31 to blower motor drive division 121 output drive signals, and the air in the drum 44 will be discharged to exhaust passage 34 by cotton wave filter 36.Before and after air in drum 44 begins to discharge, microprocessor 100 will be to heater-driven portion 124 output drive signals, after can making heater 42 drive the air discharge of generation in order to heat ° drum 44 inside of supply hot blast, will be by feed path 46 to drum 44 inner inspiration air outside, owing to after the heating air of the heater 42 of feed path 46 porch will be heated to institute's fixed temperature, be re-supplied to drum 44 inside.Because the air of the inhalation power inspiration that the driving of blower motor 31 causes also will be by heater 42 heating backs to drum 44 internal feeds.
After the air that supplies to drum 44 inside like this sucks the moisture in the washings, because the driving of air blast assembling body 30 flow to exhaust passage 45 by exhaust outlet 43.In exhaust passage 45,, be discharged to the outside via exhaust passage 34 by air blast dress body 30.It is to finish according to the attraction of above-mentioned blower motor 31 that air is discharged from drum 44 by exhaust outlet 43.Air by exhaust outlet 43 will be purified by cotton wave filter 36, not be communicated in the air blast assembling body 30 thereby make to mix in airborne foreign matter (for example the end of a thread of washings or pearl etc.).
The probe value that microprocessor 100 in the mainboard 52 has been set electrode sensor 48 according to the kind and the degree of drying of dry thing.When dry action begins, will be that carry out on the basis with the probe value of having set according to dry species.The action of control heater 42 makes its heating then, after heater 42 heating, the outside that is drawn into drum 44 inside by feed path 46 flows into and supplies to drum 44 inside after air is heated to institute's fixed temperature with the heating of the heater 42 of the porch of feed path 46.Under moving like this, to drum 44 inner loop air state, electrode sensor 38 will be surveyed the degree of drying of dry thing, and the signal that detects is sent to microprocessor 100 sides with voltage signal.When electrode sensor 38 is felt dry thing at sensor, utilize the voltage value difference that puts on the electrode two ends to survey degree of drying, then the temperature that detects is exported with voltage signal.
The probe value of electrode sensor 48 will continue to be input in the microprocessor 100 by signal transformation component 106, and present degree of drying is judged in the variation of the magnitude of voltage that microprocessor 100 will detect with electrode sensor 38.
The temperature of the hot blast that microprocessor 100 will be discharged to the temperature of the hot blast of drum 44 internal feeds with from drum 44 according to the acquisition of signal by 112 outputs of temperature sensor 48 signal transformation components 109 and temperature sensor 2-32 signal transformation component, and judge the degree of drying of washings in conjunction with the aridity that electrode sensor 38 detects.When judgment value reaches certain value,, and cut off the driving of heater with the signal of sever supply to heater-driven portion 124,127.
Together with above-mentioned action, the signal that is applied to blower motor drive division 121 from microprocessor 100 will cut off, and then blower motor 31 also will be controlled as halted state.
Measuring in the aridity of the drier in the past of working like this will be based on the probe value of electrode sensor 48.
Fig. 4 is that the probe value with in the past electrode sensor 48 is transformed to the structure chart that the signal of telecommunication is sent to microprocessor 100.
As shown in the figure, during the washing thing and contact electrode sensor 48 of circulation drum 44 inside, according to degree of drying, resistance value will change.The resistance value of the electrode sensor 38 that changes according to present degree of drying and the voltage that resistance R 11 is distributed will be applied to microprocessor 100 like this, thereby determine the degree of drying that washs thing of drum 44 inside.
The detection precision that aridity in drier is in the past measured is insufficient, the structure of measuring aridity is subject to externalities many times, because being input to the probe value of microprocessor 100 is not the value that detects for the specific initial point of measuring aridity, can only be identified as is the value that continues to detect.By the dryness detector that electrode sensor 48 and resistance R 11 constitute, the aridity that will have nothing to do is measured initial point, continues the output probe value, and Shu Chu value will be input to microprocessor 100 like this.Microprocessor 100 also can only be judged the degree of drying of present initial point under the state that initial point front and back signal continues to import at present.The degree of drying probe value of initial point also can only be surveyed the influence of initial point front and back to the greatest extent at present.
This dryness detector in the past when electrode sensor 48 is subjected to external action and obtains resistance value, also can only directly be suitable for this probe value.Again because dryness detector in the past is subjected to external action more, so the dry precision inaccuracy when measuring the degree of drying of present initial point.
Summary of the invention
The dryness detector that the purpose of this invention is to provide the drier of the dry accuracy that reduces external action, improves degree of drying.
In order to achieve the above object, the invention provides a kind of dryness detector of drier, its structure mainly comprises the swing roller of heat drying washings, at swing roller inner that install and washings electrode in contact sensor, it is characterized in that described electrode sensor and resistance R
1Be connected in series described capacitor C1 and resistance R with the capacitor C1 of charging voltage
2Discharge loop with triode Q1 composition charging voltage.
Effect of the present invention be the dryness detector of drier when carrying out drying automatically, its aridity is not subjected to externalities, surveys precision and improves thereby make.Drier has prevented possible underheat or overheated, thereby can improve the drying regime of washings, and can prevent the damage of washings owing to survey the raising of accuracy.Because dry accuracy improves, and then improve the reliability of this product and the quality of product.
Description of drawings
Fig. 1 is the side cross-sectional view of general drier,
Fig. 2 is the plane of general drier,
Fig. 3 is the control structure figure of general drier,
Fig. 4 is a structural representation of measuring aridity in the past the drier,
Fig. 5 is a structural representation of measuring aridity in the drier of the present invention.
Main mark among the figure:
30: air blast assembling body 31: blower motor
32,48: temperature sensor 34: exhaust passage
36: cotton wave filter 38: electrode sensor
42: heater 44: drum
46: feed path 52: mainboard
54: machine operation band 100: microprocessor
103: press key input section 106,109,112: the signal transformation component
115: door sense part 118: drum motor driving part
121: blower motor drive division 124: heater-driven portion
R1～R11: resistance C1: capacitor
Q1: triode
The specific embodiment
Reaching embodiment with reference to the accompanying drawings is described in detail the dryness detector of drier of the present invention.
Fig. 5 is the structural representation according to the dryness detector of drier of the present invention.The structure of required drier describes with reference to Fig. 1 to Fig. 3 in explanation.
As shown in the figure, in the dryness detector according to drier of the present invention, its structure mainly comprises the swing roller of heat drying washings, in swing roller inner that install and washings electrode in contact sensor, described electrode sensor and resistance R
1Be connected in series described capacitor C1 and resistance R with the capacitor C1 of charging voltage
2Discharge loop with triode Q1 composition charging voltage.Be series connection electrode sensor 48 and capacitor C1 in the resistance R 1, according to the resistance value that is changing in the electrode sensor 38 different variation of charging voltage generation of capacitor C1 in addition.Splicing point at electrode sensor 38 and capacitor C1 constitutes discharge loop.Discharge loop is to constitute by resistance R 2 with as the triode Q1 of switch terminal, in case when triode Q1 is ON, the voltage that charges in capacitor Q 1 is emitted.The ON cycle of triode Q1 is by microprocessor 100 controls.The charging voltage of capacitor C1 supplies to microprocessor 100 by resistance R 3.
It is as follows that the aridity according to drier of the present invention under this structure is measured process:
To the drum 44 inner things that wash that drop into the palpus drying, the user shuts the door then.Select dry actuating signal in press key input section 103, then this signal will be input in the microprocessor 100 in the mainboard 52.Microprocessor 100 drives signal to drum motor driving part 118 output rollers, and along with Rolling motor drives, machine operation band 54 will rotate, and then makes drum 44 rotations.Microprocessor 100 will be to blower motor drive division 121 output drive signals.After 30 actions of air blast assembling body, and then blower motor 31 is driven, by the air of cotton wave filter 36 in the 34 discharge drums 44 of exhaust passage.Before and after the initial point that air in drum 44 is discharged, microprocessor 100 will be to heater-driven portion 124 output drive signals.As long as drive division 124 operate as normal will drive heater, and produce the required heat of dry action.In case the air of drum 44 inside is discharged, will be by feed path 46 to above-mentioned drum 44 inner suction air outside, the heat of sending by the heater 42 in feed path 46 porch to institute's fixed temperature, and supplies to drum 44 inside with air heat then.At this moment, also be because the attraction inhaled air that the driving of blower motor 31 causes after heater 42 heating, supplies to drum 44 inside.
The air that supplies to drum 44 inside is after moisture in the thing is washed in absorption, because the driving of air blast assembling body 30 flows to exhaust passage 45 via above-mentioned exhaust outlet 43.In above-mentioned exhaust passage 45,, discharge to the outside then via exhaust passage 34 by air blast assembling body 30.At this moment, air is to finish according to the attraction of blower motor 31 by exhaust outlet 43 discharges.Air by exhaust outlet 43 will be purified by cotton wave filter 36, not be communicated in the air blast assembling body 30 thereby make to mix in airborne foreign matter (for example washing the end of a thread of thing or pearl etc.).
The probe value that microprocessor 100 in the mainboard 52 has been set electrode sensor 38 according to the kind and the degree of drying of dry thing.Air is under the state of drum 44 inner loop, and electrode sensor 38 will obtain sensor and touch the resistance value that dry thing is variation, and exports the probe value that changes by such resistance value.
In this action, microprocessor 100 is opened the triode Q1 in the discharge circuit shown in Figure 5 before deciding arriving for the initial point of measuring aridity.Because this action, the charging voltage of capacitor C1 will be emitted.In case the discharge of capacitor C1 is finished, microprocessor 100 will be controlled transistor Q1 again closes it.This is emitted for the charging voltage that does not make later capacitor C1 according to aridity.In this case, make the minimized initial point of external action in order to measure present aridity, microprocessor 100 will detect the charging voltage that is charged to capacitor C1 after the resistance value voltage distribution that is being changed by electrode sensor 48 by R3, and then judge present aridity with the value that detects.
In the present invention, in order to measure aridity by institute's fixed cycle repeatedly aridity measure the discharge and the charging of circuit, thereby determine the aridity of external action when minimizing as far as possible.
By discharging by institute's fixed cycle and charging, probe value by electrode sensor 48 will be input to microprocessor 100 via signal transformation component 106, and 100 of microprocessors are judged present degree of drying according to the variation of the magnitude of voltage that electrode sensor 48 is detected.The signal that microprocessor 100 will detect according to signal transformation component 109 and temperature sensor 48 signal transformation components 112, detect the temperature to the hot blast of the temperature of the hot blast of drum 44 internal feeds and discharge, the value that detects with electrode sensor 38 is together washed the basic information of the degree of drying of thing as judgement.In case the value of judging reaches certain value,, and cut off the driving of heater 42 with the signal of sever supply to drive division 124.
Together with above-mentioned action, in a single day the signal that puts on blower motor drive division 121 from microprocessor 100 is cut off, and the power supply in the blower motor 31 also will be cut off, and blower motor 31 is controlled as halted state, and dry action also will end.
As mentioned above, the drier among the present invention is when measuring aridity, and the resistance value when washings touches electrode sensor detects the variation of the charging voltage of capacitor, and then detects aridity.Every the charging voltage of decide to emit at interval in the capacitor, external action is minimized then.
The present invention has utilized electrode sensor for the aridity that detects washings, and the variation of the charging voltage in the capacitor that causes with the resistance change of electrode sensor measures present aridity, and as basic technological thought.Therefore, the technology distortion of the present invention in technical thought range all belongs to protection scope of the present invention.
Claims (1)
1, a kind of dryness detector of drier, its structure mainly comprise the swing roller of heat drying washings, at swing roller inner that install and washings electrode in contact sensor, it is characterized in that described electrode sensor and resistance (R
1) and the capacitor (C1) of charging voltage be connected in series described capacitor (C1) and resistance (R
2) and triode (Q1) form the discharge loop of charging voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021581355A CN1510377A (en) | 2002-12-25 | 2002-12-25 | Dryness measuring device of drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021581355A CN1510377A (en) | 2002-12-25 | 2002-12-25 | Dryness measuring device of drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1510377A true CN1510377A (en) | 2004-07-07 |
Family
ID=34236861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021581355A Pending CN1510377A (en) | 2002-12-25 | 2002-12-25 | Dryness measuring device of drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1510377A (en) |
-
2002
- 2002-12-25 CN CNA021581355A patent/CN1510377A/en active Pending
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